methods for continuous loading and extrusion press system

专利摘要:
EXTRUSION PRESS SYSTEMS AND METHODS The present invention relates to systems, devices and methods that are described for extruding materials. In certain embodiments, one or more hollow billets are loaded onto an elongated mandrel bar and transported along the mandrel bar in a rotating die. Billets are transported through fluid regulators, which engage the chuck bar and provide cooling fluid to the end of the chuck bar, and through chuck claws, which engage the chuck bar and prevent it from rotating. One or more press pistons advance the billets through a centering insert and into the rotating die. A cooling assembly is provided at an extrusion end of the extrusion press to cool the extruded material. A programmable logic controller can be provided to control, at least in part, the operations of the extrusion press system.
公开号:BR112015008248B1
申请号:R112015008248-3
申请日:2013-10-11
公开日:2020-11-10
发明作者:Charles L. Stewart
申请人:Manchester Copper Products, Llc；
IPC主号:

专利说明:

BACKGROUND OF THE INVENTION
[001] The properties of a material are affected by the processing used to form and model the material. Processing includes heat treatment, deformation, and casting. Heat treatment is the process of subjecting a metal or metal alloy to a particular heating and cooling process that causes desirable physical or chemical changes. Deformation is the process of forcing a piece of material to change its thickness or shape, and some deformation techniques include forging, lamination, extrusion, and profiling. Smelting is the pouring of molten metal into a mold so that the metal matches the shape of the mold when it solidifies. Heat treatment, deformation, and casting can be used in combination, and in some particular cases, alloying elements are added to influence such as processing in a desirable way.
[002] Seamless metal tubing, such as copper tubing, is typically manufactured using various methods such as casting and rolling, continuous casting or extrusion processes. To reduce the cost of manufacture, the metal pipe produced by conventional casting and extrusion techniques, manufacturers increase the size of the billets used to form the metal pipe. These billets are typically 45 kg to 453 kg (100 to 1,000 pounds) or more. Manufacturers therefore require very large installations to house the specialized large-scale machinery needed to process the billets to form the metal pipe. The large size of the equipment, and the billets processed by the equipment, mean that the extrusion process has high maintenance and initialization costs. In addition, process limitations, such as extruding only one billet at a time, lead to manufacturing inefficiencies including limits on the amount of piping produced per series and wear of system components caused by the constant startup and shutdown of the manufacturing process with respect to separate series for each billet. SUMMARY OF THE INVENTION
[003] Systems, devices, and methods for extruding materials are described here. In certain embodiments, the systems, devices, and methods allow for the continuous extrusion of a plurality of billets. Such continuous extrusion allows relatively smaller billets to be used to produce a desired amount of extruded material, and so the scale of such continuous extrusion press systems may be smaller than conventional extrusion processes. The systems, devices, and methods allow continuous seamless extrusion of the plurality of billets.
[004] In one aspect, the systems, devices and methods of the present description include a method for continuously loading and extruding a plurality of billets, the method comprising loading a first billet on a receiving end of an elongated mandrel bar, transporting the first billet along the mandrel bar and through gripping elements that hold in place and prevent rotation of the mandrel bar, where at any given time, at least one gripping element is holding the mandrel bar, and extrude the first billet to form an extruded material by pressing the first billet through a rotating die, where the first billet is followed by a second adjacent billet that forms a part of the extruded material. The rotating die heats the billet as it advances through the rotating die. In certain implementations, a substantially constant compression force is provided against the first billet towards the rotating die. In certain implementations, the speed of rotation of the rotating die can be adjusted.
[005] In certain implementations, the method also includes transporting the first billet along the mandrel bar and through the cooling elements that hold the mandrel bar and deliver the cooling fluid to the mandrel bar, where at any given time, at least one cooling element is attached to the mandrel bar. The billet can be transported along the mandrel bar via a track that moves intermittently depending on the position of the first billet in relation to the fastening elements and the cooling elements. In certain implementations, the cooling fluid is transported to a chuck bar tip provided at a second end of the chuck bar opposite the receiving end, and the cooling fluid is returned to the cooling elements after passing through the chuck tip. chuck bar. The end of the mandrel bar can be positioned inside the rotating die before receiving the first billet. In certain implementations, the cooling fluid is water.
[006] In certain implementations, continuously loading the plurality of billets further comprises the seizure elements alternately holding the mandrel bar to allow one or more billets to pass through the seizure elements. In certain implementations, a downstream seizure element seizes the mandrel bar and an upstream seizure element is opened, and the method includes loading one or more billets into the mandrel bar and passing the upstream seizure element, closing the upstream seizure element, and advancing one or more billets into the downstream seizure element. In certain implementations, the method then includes opening the seizure element downstream, advancing one or more billets past the seizure element downstream, and closing the seizure element downstream.
[007] In certain implementations, continuously loading the plurality of billets further comprises the cooling elements alternately holding the mandrel bar to allow one or more billets to pass through the cooling elements. In certain implementations, a downstream cooling element holds the chuck bar and delivers the coolant to the chuck bar. And an upstream cooling element is opened, and the method includes loading the one or more billets into the chuck bar and passing the open upstream cooling element, closing the open cooling element, and advancing the one or more billets into the downstream cooling element. In certain implementations, the method then includes opening the downstream cooling element, advancing one or more billets past the open downstream cooling element, and closing the downstream cooling element.
[008] In certain implementations, the method also includes, during extrusion, preventing a part of the first billet that has not yet entered the rotating die to rotate. A centering insert can hold the part of the first billet to prevent rotation of said part, and the centering insert can have an adjustable position in relation to the rotating die. The centering insert can be cooled with a cooling fluid.
[009] In certain implementations, the method also includes cooling the extruded material when it leaves the rotating die. The extruded material can be cooled using water. In certain implementations, water comes in contact with the extruded material within approximately 2.54 cm (1 inch) of the rotating die. In certain implementations, the rotating die comprises a plurality of stacked die plates. In certain implementations, the material is copper, or the material is selected from the group consisting of copper, aluminum, nickel, titanium, brass, and plastic. The plurality of billets can extend substantially along the entire length of the mandrel bar. In certain implementations, the method includes flooding the interior of the extruded material with nitrogen. Each of the plurality of billets can be loaded onto the mandrel bar by a human or an automated loading device.
[010] In one aspect, a method is provided to continuously load and extrude a plurality of billets, the method comprising receiving a first billet at a receiving end of an elongated mandrel bar, transporting the first billet along the mandrel bar and through cooling elements that hold the mandrel bar and deliver the cooling fluid to the mandrel bar, where at any given time, at least one cooling element is held to the mandrel bar, and extrude the first billet to form a extruded material by pressing the first billet through a rotating die, where the first billet is followed by a second adjacent billet that forms part of the extruded material.
[011] In certain implementations, the first billet is transported along the chuck bar via a track that moves intermittently depending on the position of the first billet in relation to the cooling elements. In certain implementations, the cooling fluid is transported to the end of the mandrel bar provided at a second end of the mandrel bar opposite the receiving end, and the cooling fluid is returned to the cooling elements after passing through the end of the chuck bar. The end of the mandrel bar can be positioned inside the rotating die before receiving the first billet. In certain implementations, the cooling fluid is water.
[012] In one aspect, an extrusion press system comprises a mandrel bar having a first end and a second end, the first end for receiving a billet having a hole through it and the second end coupled to an end of the bar. mandrel, a cooling element coupled to the mandrel bar, the cooling element having a part through which the cooling fluid is delivered inside the mandrel bar to cool the end of the mandrel bar, a gripping element coupled to the bar mandrel, the gripping member comprising movable claws to hold in place and prevent rotation of the mandrel bar, and a rotating extrusion die configured to receive the billet from a centering insert having a plurality of notches that engage by friction the billet to prevent it from rotating before the billet enters the rotating extrusion die, where the end of the mandrel bar is positioned inside rotating die.
[013] In certain implementations, the extrusion press system further includes a press piston element having first and second movable arms that together hold the billet and provide a substantially constant compression force in the direction of the rotating die. The substantially constant compression force can cause the billet to enter the rotating die at a predetermined rate. In certain implementations, the extrusion press system further comprises a motor coupled to a spindle that controls the rotation speed of the rotating extrusion die.
[014] In certain implementations, the mandrel bar comprises an opening next to the cooling element doors, an opening that receives the cooling fluid. The chuck bar may further comprise notches around the chuck bar on either side of the opening, where the notches are configured to receive an O-ring to substantially prevent the cooling fluid from leaking. The mandrel bar may further comprise a mandrel bar jacket around the opening which substantially prevents the cooling fluid from leaking. In certain implementations, the mandrel bar comprises a gripping part which is correspondingly formed to engage the gripping member with the gripper. In certain implementations, the mandrel bar comprises an inner tube in it that receives the cooling fluid from the cooling element and through which the cooling fluid is delivered to the end of the mandrel bar. The cooling fluid can be returned to the cooling element from the end of the mandrel bar along a space within the mandrel bar between the outer surface of the inner tube and the inner surface of the mandrel bar. In certain implementations, the cooling fluid is water.
[015] In certain implementations, the extrusion press system further comprises a rail along which the billet is transported, where the rail moves intermittently depending on the position of the billet in relation to the gripping elements and the cooling elements. The rail may include upper rolling wheels located above the rail and configured to contact an upper billet surface. In certain implementations, the extrusion press system further comprises a cooling pipe at an outlet of the rotating extrusion die. The cooling tube cools the extruded material when the extruded material exits the rotating extrusion die. In certain implementations, the extruded material is cooled using water. The water can contact the extruded material within approximately 2.54 cm (1 inch) of the rotating extrusion die.
[016] In one aspect, a system is provided to control at least in part the extrusion of a plurality of billets, and the system includes a processor configured to provide instructions for an extrusion press system to load a first billet at one end receiving an elongated mandrel bar, transport the first billet along the mandrel bar and through gripping elements that hold in place and prevent rotation of the mandrel bar, where at any given time, at least one gripping element is holding the chuck bar, and extruding the first billet to form an extruded material by pressing the first billet through a rotating die, where the first billet is followed by a second adjacent billet that forms part of the extruded material.
[017] In certain implementations, the processor is further configured to provide instructions to an extrusion press system to intermittently move a rail through which the first billet is placed based on the location of the first billet in relation to the seizing elements. In certain implementations, the processor is further configured to provide instructions for an extrusion press system to adjust a rotational speed of the rotating die. In certain implementations, the processor is further configured to provide instructions for an extrusion press system to monitor a coolant delivery system. In certain implementations, the processor is further configured to provide instructions for an extrusion press system to monitor a coolant delivery system. In certain implementations, the processor is further configured to provide instructions to an extrusion press system to adjust the forward and retract speeds of press pistons that deliver the plurality of billets to the rotating die.
[018] In one aspect, a non-transitory computer-readable medium is provided to control at least in part the extrusion of a plurality of billets, the non-transitory computer-readable medium comprising logic recorded on it to load a first billet at one end of receiving an elongated mandrel bar, transport the first billet along the mandrel bar and through gripping elements that hold in place and prevent rotation of the mandrel bar, where at any given time, at least one gripping element is holding the chuck bar, and extruding the first billet to form an extruded material by pressing the first billet through a rotating die, where the first billet is followed by a second adjacent billet that forms a part of the extruded material.
[019] In certain implementations, the non-transient computer-readable medium also includes logic recorded in it to intermittently move a track through which the first billet is placed based on the location of the first billet in relation to the seizure elements. In certain implementations, the non-transient computer-readable medium further comprises logic recorded therein to adjust a rotation speed of the rotating die. In certain implementations, the non-transient computer-readable medium further comprises logic recorded on it to monitor a coolant delivery system. In certain implementations, the non-transitory computer-readable medium also comprises logic recorded in it to adjust the speeds of advance and retraction of press pistons that deliver the plurality of billets to the rotating die.
[020] In one aspect, the extrusion press system comprises a mandrel bar having a first end and a second end, the first end for receiving a billet having a hole through it and the second end coupled to an end of the mandrel, cooling device to deliver the cooling fluid into the mandrel bar to cool the end of the mandrel bar, gripping device to hold in place and prevent rotation of the mandrel bar, and rotating extrusion device to extrude the billet, where the rotating extrusion device receives the billet from the centralizing device having a plurality of notches that frictionally engage the billet to prevent the billet from rotating before the billet enters the rotating extrusion device, where the tip of chuck bar is positioned inside the rotating extrusion device.
[021] In certain implementations, the extrusion press system also includes a pressing device to hold the billet and provide a substantially constant compression force in the direction of the rotating extrusion device. The substantially constant compression force can cause the billet to enter the rotating extruder at a predetermined rate. In certain implementations, the extrusion press system further includes a device for controlling the rotation speed of the rotating extrusion device.
[022] In certain implementations, the mandrel bar comprises an opening close to the cooling device, an opening that receives the cooling fluid. The chuck bar may further comprise notches around the chuck bar on either side of the opening, where the notches are configured to receive an O-ring to substantially prevent the cooling fluid from leaking. The mandrel bar may further comprise a mandrel bar jacket around the opening which substantially prevents the cooling fluid from leaking. In certain implementations, the mandrel bar may further comprise a gripping part which is correspondingly formed to engage with the gripping device. In certain implementations, the mandrel bar comprises an inner tube that receives the cooling fluid from the cooling device and through which the cooling fluid is delivered to the end of the mandrel bar. The cooling fluid can be returned to the cooling device from the end of the mandrel bar along a space within the mandrel bar between the outer surface of the inner tube and the inner surface of the mandrel bar. In certain implementations, the cooling fluid is water.
[023] In certain implementations, the extrusion press system further comprises a rail along which the billet is transported, where the rail moves intermittently depending on the position of the billet in relation to the grasping device and the cooling device. The rail may include upper rolling wheels located above the rail and configured to contact an upper billet surface. In certain implementations, the extrusion press system further comprises a cooling device provided at an outlet of the rotating extrusion device. The cooling device cools the extruded material when it leaves the rotating extruder. In certain implementations, the extruded material is cooled using water. Water can come in contact with the extruded material within approximately 2.54 cm (1 inch) of the rotating extrusion device.
[024] In one aspect, a method for continuously extruding a plurality of billets comprises transporting, along a non-rotating mandrel bar, the plurality of billets from a first end of the mandrel bar to a second end of the bar mandrel, and extrude the plurality of billets by pressing each of the plurality of billets through a rotating die, where friction from the rotation of the rotating die against the plurality of non-rotating billets generates heat to deform the plurality of hollow billets, where one end of the mandrel bar is positioned within the rotating die at the second end of the mandrel bar. In certain implementations, the method includes, during extrusion, preventing the rotation of a part of the respective billet from the plurality of billets that have not yet entered the rotating die. In certain implementations, a centering insert holds the part of the respective billet to prevent rotation of said part, and the centering insert has an adjustable position in relation to the rotating die. In certain implementations, the method also includes cooling the end of the mandrel bar during extrusion.
[025] In one aspect, a die for extruding a material includes a die body having a passage defining an inlet and an outlet, with the diameter of the outlet being less than the diameter of the inlet, and an inner surface extending around the passage from the entrance to the exit. A base is attached to the matrix body, and the rotation of the base causes the matrix body to rotate.
[026] In certain implementations, the die body is configured to receive a billet of material for extrusion, and the billet is not preheated before entering the die body. The rotation of the matrix body creates friction between the internal surface and an advanced billet through the entrance and to the internal passage of the matrix body. The friction heats the billet to a temperature that is sufficient to cause the billet material to deform. In certain implementations, the die body is configured to receive a mandrel tip through the inlet such that the mandrel tip is positionable within the internal passage of the die body. The inner surface of the die may include an angled portion configured to be positioned close to a corresponding tapered outer surface of the mandrel tip. The die body is configured to receive a pressed billet through the internal passage of the die body to form an extruded product, the extruded product has an outer diameter corresponding to the diameter of the outlet of the die body and an inner diameter corresponding to a diameter of the mandrel tip.
[027] In certain implementations, the matrix body includes a plurality of matrix plates coupled together to form a stack. Each die plate has a circular hole through the center of the plate, and the perimeters of the holes form the internal surface in the die body. The perimeter of the holes is angled at different angles with respect to an axis that extends through the matrix body from the entrance to the exit. An angle of the perimeter near a front face of each plate in the matrix body is greater than an angle of the perimeter near the rear face of an adjacent plate. The stack may include a non-uniform die plate being a hole perimeter angled at a first angle near a front face of the plate and angled at a second different angle near a rear face of the plate. At least one of the matrix plates is formed from two different materials, with a first material forming a perimeter of a hole in the matrix plate and a second material forming an external part of the matrix plate. The first material can be a ceramic material, a steel, or a consumable material. In certain implementations, a front face of the die body near the entrance is configured to fit with a centering insert having a diameter substantially equal to the diameter of the entrance. The centering insert and an entrance perimeter can be formed from the same material. The centering insert does not rotate when the base and the matrix rotate. In certain implementations, the base comprises a circular hole having a diameter larger than the diameter of the die outlet. A motor can provide rotational force to the base.
[028] In one aspect, a die includes a device for extruding a material, and the extrusion device includes a passage device defining an inlet and an outlet, where the diameter of the outlet is less than the diameter of the inlet, and a internal surface device extending around the entrance to exit passage device. The die also has a device for coupling the extrusion device to a rotation device, and the rotation of the coupling device causes the extrusion device to rotate.
[029] In certain implementations, the extrusion device is configured to receive a billet of material for extrusion, and the billet is not preheated before entering the die body. The rotation of the extrusion device creates friction between the inner surface device and an advanced billet through the inlet and to the extrusion device's passage device. The friction heats the billet to a temperature that is sufficient to cause the billet material to deform. The extrusion device is configured to receive a rod end device through the inlet so that the rod end device is positioned within the passage device of the extruder device. The inner surface device of the extrusion device includes an angled portion configured to be positioned close to a corresponding tapered outer surface of the rod tip device. The extruder is configured to receive a billet passed through the extruder pass device to form an extruded product, the extruded product having an outer diameter corresponding to the outlet diameter of the extrusion device and an inner diameter corresponding to a diameter of the rod tip device.
[030] In certain implementations, the extrusion device comprises a plurality of sheet devices coupled together to form a stack. Each plate device has a circular hole through the center of the plate device, and the perimeter of the holes forms the inner surface device in the extrusion device. The perimeters of the holes are angled at different angles with respect to an axis that extends through the device for extruding the input to the output. An angle of the perimeter near a front face of each plate device in the extrusion device is greater than an angle of the perimeter near a rear face of an adjacent plate device. The stack may include a non-uniform plate device having a bore perimeter angled at a first angle close to a front face of the plate device and angled at a second different angle close to a rear face of the plate device. At least one of the plate devices is formed from two different materials, with a first material forming a perimeter of a hole in the plate device and a second material forming an external part of the plate device. The first material can be a ceramic material, a steel or a consumable material. A front face of the extrusion device near the inlet is configured to fit with a centering device having a diameter substantially equal to the diameter of the inlet. The centering device and the entrance perimeter can be formed from the same material, the centralization device not rotating when the coupling device and the extrusion device rotate. The centering device includes a gripping device that prevents the rotation of a billet passing through the centralization device. In certain implementations, the coupling device comprises a circular hole having a diameter greater than the outlet diameter of the extrusion device, and an energy device can provide a rotational force to the coupling device.
[031] Variations and modifications of these modalities will occur to those skilled in the art after reviewing this description. The previous features and aspects can be implemented, in any combination and subcombination (including multiple combinations and dependent subcombination), with one or more other features described here. The various features described or illustrated here, including any components thereof, can be combined or integrated into other systems. In addition, certain characteristics can be omitted or not implemented. DESCRIPTION OF THE DRAWINGS
[032] The previous and other objectives and advantages will be clear by considering the following detailed description, taken in conjunction with the attached drawings, in which similar reference characters refer to similar parts throughout the description, in which: Figure 1 shows a side elevation view of an illustrative extrusion press system.
[033] Figure 2 shows an elevation side view of an illustrative billet rail assembly for use with the Figure 1 extrusion press system.
[034] Figure 3 shows a perspective view of an illustrative fluid regulator.
[035] Figures 4 and 5 show frontal and side elevation views, respectively, of the fluid regulator in Figure 3.
[036] Figure 6 shows a schematic view of an illustrative chuck bar having an opening or door for receiving cooling fluid.
[037] Figure 7 shows a perspective view and several cross and side views of an illustrative mandrel bar shirt.
[038] Figure 8 shows a cross-sectional perspective view of an illustrative mandrel bar having an inner tube for delivering cooling fluid to one end of the mandrel bar.
[039] Figure 9 shows a schematic diagram of an illustrative fluid delivery system.
[040] Figure 10 shows a perspective view of an illustrative mandrel bar gripper.
[041] Figures 11 and 12 show frontal elevation views of the chuck bar claw in Figure 10 in a grasping position (11) and a non-grasping position (12) -
[042] Figure 13 shows a schematic view of an illustrative chuck bar having a part that fits with a chuck bar claw.
[043] Figure 14 shows a perspective view of the chuck bar portion of Figure 13.
[044] Figure 15 shows a perspective view of an illustrative press piston assembly having guide elements.
[045] Figure 16 shows a perspective view of an illustrative press piston plate.
[046] Figures 17 to 19 show front, side and rear elevation views, respectively, of the press piston plate of Figure 16.
[047] Figure 20 shows a perspective view of a press piston plate.
[048] Figures 21 to 23 show front, side and rear elevation views, respectively, of the press piston plate of Figure 20.
[049] Figure 24 shows an illustrative rotating die and centering ring in an extrusion orientation.
[050] Figure 25 shows an illustrative cross-sectional view of the rotating die and centering ring of Figure 24.
[051] Figure 26 shows an illustrative cross-sectional view of the rotating die and centering ring of Figure 24.
[052] Figure 27 shows a cross-sectional view of the rotating die of Figure 24 with a mandrel bar positioned on it.
[053] Figure 28 shows a cross-sectional view of a billet being extruded through the rotating die of Figure 27.
[054] Figures 29 and 30 show a perspective view and a plan view from above, respectively, of illustrative mandrel bar tips.
[055] Figure 31 shows an illustrative flowchart for pre-processing a billet for use in the extrusion press system of Figure 1.
[056] Figure 32 shows an illustrative flowchart for the pre-processing of a chuck bar tip for use in the extrusion press system of Figure 1.
[057] Figures 33 to 36 show illustrative flowcharts for operating the extrusion press system of Figure 1.
[058] Figure 37 shows a block diagram of an illustrative computer system for operating the extrusion press system of Figure 1.
[059] Figure 38 shows a cross-sectional view of a magnetic data storage medium encoded with a set of instructions executable by machine to execute the methods of the present description.
[060] Figure 39 shows a cross-sectional view of an optically readable data storage medium encoded with a set of machine executable instructions for executing the methods of the present description.
[061] Figure 40 shows a simplified block diagram of an illustrative system using a programmable logic controller of the present description.
[062] Figure 41 shows a block diagram of an illustrative system using a programmable logic controller of the present description. DESCRIPTION OF THE INVENTION
[063] To provide a general understanding of the systems, devices, and methods described here, certain illustrative modalities will be described. Although the modalities and characteristics described here are specifically described for use in conjunction with continuous extrusion press systems, it is understood that all components, connection mechanisms, manufacturing methods, and other characteristics described below can be combined with each other in any way. appropriately and can be adapted and applied to systems to be used in other manufacturing processes, including, but not limited to casting and rolling, up-cast, heat treatment, other extrusion and other manufacturing processes. Furthermore, although the modalities described here refer to the extrusion of metal tubing from hollow billets, it is understood that the systems, devices and methods mentioned here can be adapted and applied to systems to extrude any suitable type of extruded product using billets .
[064] The extrusion press system operates using frictional heat generated from a non-rotating hollow billet coming into contact with a rotating die to facilitate billet deformation and extrusion. There is therefore no requirement to pre-heat the billets or the rotating die before extrusion. The amount of heat generated is generally determined by the rate at which the billets are fed into the rotating die (for example, controlled by the speed of the press piston of the press piston elements 130, 140 of Figure 1) and the speed of rotation of the die (for example, controlled by the rotation speed of spindle 172 in Figure 1), as well as the internal profile of the rotating die. The higher speeds of the press piston and spindle rotation generate relatively greater amounts of heat.
[065] The rotating die forms the outer diameter of an extruded tube produced by the extrusion press system, and a mandrel bar tip positioned inside the rotating die forms the inner diameter of the extruded tube. In certain embodiments, the cooled process water, or any other suitable cooling fluid, is used to cool the process elements including the rotating die, the centering insert, the billets, and the gearbox oil, as well as the extruded pipe product. Unlike conventional extrusion techniques, the extrusion press system of the present description does not require any container in which to keep the billet for extrusion. Then, the billets to be extruded preferably have sufficient column strength to withstand the pressure applied by the press piston elements during the extrusion process. A programmable logic controller, or PLC, controls all or a subset of movements of the extrusion press system while the system is configured in automatic mode.
[066] The extrusion press systems, devices, and methods described here can provide continuous extrusion of a plurality of billets to produce a seamless extruded pipe product in accordance with various seamless pipe standards including, for example, the Specification ASTM-B88 Standard for Seamless Copper Water Piping. The seamless extruded pipe of this description can also comply with the standards under NSF / ANSI-61 for Potable Water System Components.
[067] Figure 1 shows an extrusion press system 10 according to certain modalities. The extrusion press system 10 includes structural sections called here the mandrel carriage section 80 and the plate frame section 90. The mandrel carriage section 80 includes a mandrel bar 100, fluid regulators or cooling elements 102 and 104, chuck jaws or gripping elements 106 and 108, and a billet delivery system 110 shown in detail in Figure 2. The chuck carriage section 80 is supported by a physical carriage structure, which is not shown in Figure 1 to avoid complicating the design too much, but carriage structure that serves as a support for the components of the mandrel carriage 80. The plate structure section 90 includes an entry plate 120 and a rear die plate 122, press piston 130 and 140, a centering plate 150, and a rotating die 160 that presses against the rear die plate 122. The plate frame section 90 is supported by a frame 190 which also serves as a support for the engine 170 and comp related gearbox components (not shown). The direction along which billet loading, transport, and extrusion occurs according to the extrusion press system 10 is denoted by the directional process arrow di. The extrusion press system 10 can be operated, at least in part, by a PLC system that controls various aspects of the billet delivery subsystem 20, extrusion subsystem 40, and the cooling or cooling subsystem 60 of the press system. extrusion 10.
[068] Chuck jaws 106, 108 comprise a chuck bar gripping system 105 designed to hold the chuck bar in place while allowing a plurality of billets to be continuously fed along and around the chuck bar 100 to provide continuous extrusion. Billets can be formed from any material suitable for use in extrusion press systems including, but not limited to, various metals including copper and copper alloys, or any other suitable non-ferrous metals such as aluminum, nickel, titanium, and alloys thereof , ferrous metals including steel and other iron alloys, polymers such as plastics, or any other suitable material or combinations thereof. Chuck jaws 106, 108 can be controlled by the PLC system to safely hold chuck bar 100 so that at any given time during the extrusion process, at least one of the chuck jaws 106, 108 is holding the chuck bar 100. Chuck jaws 106, 108 set the position of chuck bar 100 and prevent chuck bar 100 from rotating. When chuck jaws 106, 108 are in a gripping or engaged position, thereby holding chuck bar 100, chuck jaws 106, 108 prevent billets from being transported along chuck bar 100 through jaws.
[069] Chuck jaws 106, 108 operate alternately by holding or engaging chuck bar 100 to allow one or more billets to pass through a respective chuck jaw at a given time. For example, the upstream chuck jaw 106 can release or disengage the chuck bar 100, while the downward chuck jaw 108 is holding the chuck bar 100. At any given time, at least one of the chuck jaws 106, 108 is preferably holding or otherwise engaged with the chuck bar 100. One or more billets in a row or indexed close to the upward chuck jaw 106, or being transported along the chuck bar 100, may pass through the chuck jaw open upstream 106. After a specific number of billets has passed through the open upward chuck claw 106, claw 106 can close and thus return to holding the chuck bar 100, and the billets can be advanced to the gripping element downstream 108. The downstream gripping element 108 can remain closed, thus holding the chuck bar 100, or the downstream chuck claw 108 can open after the upstream chuck claw 106 holds again chuck bar 100. Although two chuck jaws 106, 108 are shown in the extrusion press system 10, it is understood that any suitable number of chuck jaws can be provided.
[070] Fluid regulators 102, 104 comprise a chuck bar fluid delivery system 101 designed to deliver cooling fluid along the interior of the chuck bar 100 to the tip of the chuck bar during the extrusion process. Fluid regulators 102, 104 also receive cooling fluid from the chuck bar 100 which has returned from the tip of the chuck bar. Any suitable cooling fluid can be used, including water, various mineral oils, brines, synthetic oils, any other suitable cooling fluid, including gaseous fluids, or any combination thereof. Fluid regulators 102, 104 can be controlled by the PLC system to continuously supply process cooling fluid to the mandrel bar during the extrusion process, while allowing a plurality of billets to be continuously fed along and around the mandrel bar 100. Fluid regulators 102, 104 operate so that there is no or substantially no interruption in the supply of process cooling fluid to the end of the chuck bar during the extrusion process. Similar to the operation of chuck jaws 106, 108 discussed above, when fluid regulators 102, 104 are attached or engaged to chuck bar 100, fluid regulators 102, 104 prevent billets from being transported along the chuck bar 100 through the fluid regulators.
[071] Fluid regulators 102, 104 operate so that at any given time during extrusion, at least one of the fluid regulators is attached or engaged to the chuck bar 100 and thus delivers cooling fluid to the chuck bar 100 for delivery to the end of the mandrel bar. When a billet passes through one of the fluid regulators 102, 104, the respective fluid regulator discontinues the delivery (and receipt) of cooling fluid and releases or disengages the chuck bar 100 to allow the billet to pass through it before reattach the chuck bar 100 and continue to deliver (and receive) cooling fluid. While one of the fluid regulators 102,104 is detached or disengaged from the mandrel bar 100, the other fluid regulator continues to deliver cooling fluid to the mandrel bar.
[072] For example, the upstream fluid regulator 102 can release the chuck bar 100 while the downstream fluid regulator 104 is attached to the chuck bar 100. At any given time, at least one of the fluid regulators 102, 104 is preferably attached to the mandrel bar 100 to continuously deliver cooling fluid. One or more billets queued or indexed near the upstream fluid regulator 102, or being transported along the chuck bar 100, can pass through the open upstream fluid regulator 102. After a specific number of billets have passed through the regulator upstream fluid flow 102, fluid regulator 102 can close and return like this to secure chuck bar 100 and deliver cooling fluid, and billets can be advanced to downstream fluid regulator 104. fluid regulator downstream downstream 104 can remain closed, thus fixing the chuck bar 100, or the downstream fluid regulator 104 can open after the upstream fluid regulator 102 re-attach the chuck bar 100. Although two fluid regulators 102, 104 are shown in the extrusion press system 10, it is understood that any suitable number of fluid regulators can be provided.
[073] Billet delivery system 20 includes billet feed rail assembly 110 in Figure 2. Billet delivery system 110 ensures that a continuous supply of billets, such as billet 30, is present for the process extrusion. When additional billets are needed, the PLC system will cycle the appropriate chuck bar jaws 106, 108, fluid regulators 102, 104, and billet delivery rollers (for example, the billet rails set 110) to ensure that billet supply is continuous. The section of the chuck carriage 80 located between the chuck jaw 106 and the input plate 120 can continuously index to minimize the space between the billets fed in the cylinder plate sections 141 of the plate structure 90. For example, at this location of the chuck carriage 80, rail assembly 110 can continuously cycle rail 202 to feed billets into sheet structure 90.
[074] Billet feed rail assembly 110 includes a belt or rail 202 positioned around sprockets 204 and 205. One or more of the sprockets 204, 205 can be coupled to a motor (not shown) that operates to move or cycle rail 202 in a loading direction, d2. Rail 202 and sprockets 204, 205 are supported by a base rail 206 and a low rail 208, which together attach to a frame 210. An upper part 210a of frame 210 includes upper roller wheels 212 that provide an upper link for a pass-through billet 30. For example, as shown in Figure 2, the mandrel bar 100 includes a billet 30 loaded therein, where billet 30 moves via contact with rail 202 and is stabilized by the upper roller wheels 212. The billet feed rail assembly 110 can be of any suitable length. For example, the rail assembly 110 may extend substantially along the length of the chuck bar 100 within the chuck carriage section 80. In certain embodiments, a plurality of rail assemblies that together operate to feed billets to the along the chuck bar 100 and in the plate frame section 90. For example, there may be rail assemblies provided along the chuck bar 100 between each of the fluid regulators 102, 104 and chuck jaws 106, 108 of so that one or more billets can be independently routed through the respective fluid regulators 102, 104 and chuck jaws 106, 108, without requiring transport of other billets as would occur if there were only a single rail set.
[075] Returning to Figure 1, the mandrel bar 100 extends substantially along the length of the extrusion press system 10 and is positioned to place the tip of the mandrel bar within the rotating die 160. The adjustment to properly position the end of the mandrel bar within the rotating die 160 is performed by moving the mandrel carriage section 80, thereby moving the mandrel carriage 100. Adjustments for the mandrel carriage 100 and the mandrel carriage section 80 can be towards the matrix 160 or away from it. The mandrel bar 100 and the mandrel carriage section 80 preferably cannot be adjusted while the extrusion press system 10 is in operation, although it is understood that in certain embodiments, the mandrel bar 100 and / or the chuck carriage 80 can be adjusted during operation.
[076] As discussed above, the extrusion press system 10 includes a plate frame section 90 having an input plate 120 and a rear die plate 122, press piston plates 130 and 140, a centering plate 150 , and a rotating die 160 pressed against the rear die plate 122. Next to the input plate 120 is the press piston assembly 141 which includes a first press piston plate 130 and a second press piston plate 140. A first and second press piston plate 130, 140 feed billets into the centering plate 150, which holds the billets and prevents them from rotating before entering the rotating die 160, which presses against the rear die plate 122. inlet 120 and the rear die plate 122 are coupled by a series of tie rods 124 that act as guides for the press piston plates 130, 140 and the centering plate 150, each of which includes bearings 126a, 126b, 126c which move along of the risers 124. The rear die plate 122 and the entry plate 120 have mounting locations 127 through which the risers 124 are attached. Inlet plate 120, rear die plate 122, and tie structure 124 are supported by frame 190. Frame 190 also holds spindle 172 and motor 170. At the exit of rotating die 160 is a cooling pipe 180 to quickly cool the extruded tubing.
[077] Press piston plates 130, 140 operate by holding the billets and providing a substantially constant compression force in the direction of the extrusion die stack 160. At any given time, at least one of the press piston plates 130, 140 holds a billet and advances it along the mandrel bar 100 to provide constant compressive force. The press piston plates 130, 140 form the final part of the billet delivery subsystem 20 before the billet enters the centering plate 150 and the rotating die 160 of the extrusion subsystem 40. Similar to the billet feed rail section before the input plate 120, the section before the press piston plates 130, 140 preferably continuously indexes the billets to minimize any spaces between a billet that is held to the press piston plates 130, 140 and the next billet.
[078] As discussed above, the press pistons 130, 140 continuously push billets to the rotating die 160. The press pistons 130, 140 alternate between holding and advancing the billets towards and to the rotating die 160 and then releasing the billets. advanced and retract to the next seizure / advance cycle. There is preferably an overlap between the time when one press piston stops compressing and the other press piston is about to start compressing so that there is always pressure in the rotating die 160. The press pistons 130, 140 advance and retract via the press piston cylinders coupled to the respective press piston. As shown, there are two press piston cylinders 132, 142 per press piston. A first set of press piston cylinders 132 is located to the left and right of the input plate 120 (although the press piston cylinder on the right side is hidden from view by the left press piston cylinder). The first set of press piston cylinders 132 couples with the first press piston plate 130 and is configured to move the first press piston 130 along the risers 124 as the first press piston 130 advances the billets and then retracts for subsequent billets. A second set of press piston cylinders 142 is located above and below the input plate 120. The second set of press piston cylinders 142 couples with the second press piston plate 140 and is configured to move the second piston press rod 140 along rods 124 as the second press piston 140 advances the billets and then retracts for subsequent billets. Although two press piston cylinders are shown for each of the first and second press piston plates 130, 140, it is understood that any suitable number of press piston cylinders can be provided. In certain embodiments, the press piston cylinders can be coupled to both press pistons 130, 140.
[079] The centering plate 150 receives billets advanced by the press pistons 130, 140 and maintains the billets to prevent their rotation during the extrusion process before the billets enter the rotating die 160. When the centering plate 150 is positioned in the place for the extrusion process, the centering plate 150 becomes part of the extrusion die 160. That is, a centering insert 152 of the centering plate 150 substantially abuts the rotating matrix 160. the centering plate 150 itself, however, and the components therein, including the centering insert 152, do not rotate with the rotating die 160. The centering plate 150 prevents the billets that are no longer held by the second press track 150 from rotating, while the matrix 160 rotates holding the billets and thus preventing them from rotating before entering the rotating die 160.
[080] The rotating die 160 may have a single body design, or may include a plurality of die plates stacked together. In certain embodiments, the die includes a base plate, an end plate, a second intermediate plate, a first intermediate plate, an inlet plate, and a steel end retainer, and the matrix plates are screwed together to form the matrix 160. The rotating die 160 is screwed or otherwise coupled with spindle 172, which is operated by motor 170. A gearbox is screwed to the rear die plate 122 and contains spindle 172 as well as the drive belt , engine transmission gear, gear oil reservoir, and gear oil heat exchanger, which are not shown in Figure 1 to avoid over complicating the figure. In certain embodiments, the spindle motor 170 and the spindle gear / die ratio is 2.5: 1, although it is understood that any suitable gear ratio can be used for the rotation of the rotating die 160.
[081] At the extrusion end of the extrusion press system 10 is a cooling box 185 screwed or otherwise coupled to the gearbox outlet side on the rear die plate 122. In certain embodiments, inside the cooling box 185 is a cooling tube 180 to quickly cool or cool the extruded material as it exits the rotating die 160. Water can be used as the cooling or cooling fluid, and water can come in contact with the extruded material at all. time after the extruded material leaves the rotating die 160. For example, in certain embodiments, the extruded material is cooled with the cooling fluid within approximately 2.54 cm (1 inch) from the exit of the rotating die 160. Any Proper cooling can be used to cool an extruded material, including water, various mineral oils, brines, synthetic oils, any other suitable cooling fluid including gaseous fluids, or any combination thereof. The cooling tube 180 can be formed of one or more tubes having a channel in them to deliver the cooling fluid to the extruded material. In certain embodiments, the cooling tube 180 further includes an end cap or other structure through which the cooling fluid is delivered to the extruded material. Any suitable cooling tube can be used with the extrusion press system of this description, including, for example, the cooling tubes described in the US Patent Application. No. 13 / 650,972, filed on October 12, 2012, the description of which is incorporated herein by reference.
[082] In certain embodiments, nitrogen gas or other suitable inert gas is delivered to the interior of an extruded material as the material leaves the rotating die. For example, nitrogen gas can be delivered to the interior of the extruded pipe using a cap placed on the front end of the extruded pipe as it exits the rotating die. Injecting gaseous or liquid nitrogen into the rotating die assembly, or into the extruded material itself, can minimize the formation of oxide displacement of oxygen-charged air.
[083] Although not shown in Figure 1, the billet delivery subsystem 20 of the extrusion press system 10 can include a billet delivery table with a plurality of billets prepared for loading in the extrusion press system 10. The billets they can be loaded automatically, for example, by an automated process, or they can be loaded manually.
[084] The various components of the extrusion press system 10 of Figure 1 will now be described with reference to Figures 3 to 30. Figure 3 shows a perspective view of the fluid regulator 102 of Figure 1 according to certain modalities. Fluid regulator 102 includes a housing 302 having a base 304 and end plates 306a and 306b coupled via four rods 308, although it is understood that any suitable number of rods can be used, and in certain embodiments, other fastening techniques may be used to hold fluid regulator elements in addition to or in place of risers 308. Supported by risers 308 is an inlet / outlet fluid regulator 312, through which cooling fluid, such as water, enters and exits fluid regulator 102, and a raw fluid regulator 314, each of which is actuated by a respective cylinder 309, 310 located between the respective regulator 312, 314 and its end plate 306a, 306b. Located below housing 302 are carriage rails 305 that hold fluid regulator 102 to the carriage structure that supports chuck carriage section 80 of Figure 1. Inlet / outlet fluid regulator 312 includes holes 316 formed in a surface upper part 312a extending to an insert 318 which is inserted into an internal part of the inlet / outlet fluid regulator 312. As can be seen in Figure 3, the raw fluid regulator 314 has an attachment surface 314a and the insert 318 within the inlet / outlet fluid regulator 312 has an attachment surface 318a. The fixing surfaces 314a and 318a frictionally engage a respective surface of the mandrel bar, such as the mandrel bar 100 of the extrusion press system 10. In certain embodiments, the fixing surfaces 314a, 318a can engage with a jacket chuck bar sleeve (e.g., chuck bar sleeve 360 of Figure 7) provided around a portion of the chuck bar.
[085] Figures 4 and 5 show front and side elevation views, respectively, of fluid regulator 102 in Figure 3. As shown in Figures 4 and 5, for example, holes 316 in the inlet / outlet fluid regulator 312. extend from the upper surface 312a of regulator 312 and to ports 320 formed in insert 318. Fluid regulator 102 delivers cooling fluid to the mandrel bar via the inlet / outlet fluid regulator 312 through holes 316 and ports 320. As also shown, in Figure 4 are the fixing surfaces 314a and 318a of the inlet / outlet fluid regulator 312 and the raw fluid regulator 314. Although fluid regulator 312 includes two holes 316 in fluid communication with two ports 320 of insert 318, it is understood that any suitable number of holes and ports can be provided to deliver cooling fluid to the mandrel bar. Alternatively, or in addition, in certain embodiments, holes 316 may be provided through other surfaces of the fluid regulator such as the front (or rear) surface 312b or the side surfaces 312c of the inlet / outlet fluid regulator 312.
[086] In certain embodiments, the fixing surfaces 314a and 318a of the raw fluid regulator 314 and the insert 318 of the inlet / outlet fluid regulator 312 are structured to fit with a corresponding part of a mandrel bar. Figure 6 shows a schematic view of a chuck bar 340 having an opening or port 344 for receiving and / or returning the cooling fluid from a fluid regulator according to certain modalities. As shown in Figure 6, for example, chuck bar 340 includes parts 342 and 348 having two respective port sections 342a, 342b and 348a, 348b for receiving and / or returning cooling fluid from a fluid regulator such as the fluid regulator 102. In certain embodiments, port sections 342a and 348a are configured for the return of cooling fluid to a fluid regulator, and port sections 342b and 348b are configured for receiving coolant at from the fluid regulator. Alternatively, port sections 342a and 348a can receive coolant, and port sections 342b and 348b can return coolant. In yet additional embodiments, port sections 342a / 348b can receive cooling fluid and port sections 342b / 348a can return cooling fluid, or vice versa. Any port section receiving / returning arrangement can be used so that at least one of the respective ports receives cooling fluid and the other returns the cooling fluid to the fluid regulator.
[087] The inner element of the chuck bar part 342 shows the port section 342a with an opening or port 344 for receiving and / or returning the cooling fluid from the fluid regulator 102. The chuck port 344 is dimensioned to correspond with the respective port 320 of the fluid regulator 102. Around the chuck port 344 is a series of notches 346 receiving O-rings and thus preventing the cooling fluid from escaping or otherwise leaking from the chuck bar 340 via port 344. The two chuck bar ports 342, 348 correspond, for example, to the parts of the chuck bar that interface with the two fluid regulators 102, 104 of the extrusion press system 10 in Figure 1. As discussed above, in certain embodiments, a mandrel sleeve 360 may be provided to engage the attachment surfaces of a fluid regulator. The chuck sleeve 360 can also work in conjunction with the O-rings to prevent leakage of fluid from the chuck bar 340 and the fluid regulator. As shown in Figure 7, for example, a chuck sleeve 360 includes ports 360 through which the cooling fluid is delivered and / or returned between the chuck bar 340 and a fluid regulator. Chuck sleeve 360 also includes a slot 364 that allows flexibility as the sleeve 36 is positioned on chuck bar 340 around ports 342, 348 that receive and / or return cooling fluid. The grooved O-rings 346 can create a substantially fluid impermeable seal between the chuck bar 340 and the inner surface 360a of the chuck bar liner 360.
[088] Also shown in Figure 6 is an inner tube 350 that runs along the length of the chuck bar 340 and which delivers the cooling fluid to the tip of the chuck bar, which is positioned within a rotating die. The cooling fluid that is received through the openings or ports 344 in the chuck bar 340 travels through an opening 354 in the inner tube 350 so that the coolant is delivered along the inside of the tube 350 to the end of the chuck bar , where he then travels back outside tube 350, but inside the mandrel bar, to the openings or doors 344 from which he was received. The direction of travel of the cooling fluid is shown in Figure 8, which represents a cross-sectional perspective view of the chuck bar 340 and the inner tube 350 of Figure 6 to deliver the cooling fluid to the tip of the chuck bar. The cooling fluid travels along the inside of the inner tube 350 in the direction of the arrow W1 towards the tip of the mandrel bar and then returns in the direction of the arrow W2 in the inner space 352 between the outer surface 350a of the inner tube 350 and the surface inner part 340a of the mandrel bar 340. In certain embodiments, a part of the inner surface of the mandrel bar, such as the inner surface 340a of the mandrel bar 340, can be threaded to receive the end of the mandrel bar, although the end of the chuck bar can be attached to the chuck bar using any suitable technique. In certain embodiments, a spacer may be provided around the inner tube 350 which centers the inner tube 350 within the chuck bar 340 along any suitable length of the chuck bar 340. When the chuck bar has threads, the spacer can be threaded to the mandrel bar, although the spacer can also press against unthreaded parts of the mandrel bar.
[089] The extrusion press system 10 includes a cooling system 400 to cool the various components of the press system 10 during operation. Although the cooling system 400 of Figure 9 is described using water as the cooling fluid, it is understood that any suitable cooling fluid can be used. The 400 extrusion press cooling system is designed to deliver chilled water in quantities and pressures sufficient to cool the process components and the extruded product. In certain embodiments, there can be two main water systems in the press, mandrel water and press water. With respect to mandrel water, the mandrel water system is supplied with water from the holding tank. Heat exchangers cool the process water by exchanging the heat generated during the extrusion process with the cooled water from the cooled water system. Process water flows in a serial circuit through the heat exchangers and the chilled water flows in a parallel circuit through the heat exchangers, and the two water systems never come into physical contact with each other. All water is made available to the mandrel water system. A pressure relief valve limits the system pressure. Unused water in the chuck system is diverted to the holding tank, which cools the process water in the holding tank. The water is pumped through the inside of the mandrel bar through the inner water tube (for example, the inner tube 350 of Figures 6 and 8) to the end of the mandrel bar and returns the length of the outer space inside the mandrel bar as discussed with respect to Figures 6 and 8. As the water circulated through the mandrel cooling system, it is returned to the holding tank which is the other source of cooling process water for the holding tank. Preferably, at no time does the mandrel process water supply be interrupted while the press is running. The press water system is supplied with water from the holding tank. Flow and pressure are regulated by a relief valve with excess water being returned to the holding tank. The press water is pumped to a distributor where it is sent to cool various components of the system, including the rotating die, by means of a high-speed spray of water from a cooling ring to which the water is directed to cool the hydraulic oil in the gearbox before cooling the die. The centering insert 152, through a constant flow through a centering insert retainer, the billets through a flooding system as they enter the Inconel, and the tube being extruded by using the cooling tube that the sprinkling cools the tube. The cooling tube is housed inside the spindle. The process water from the above operations returns back to the holding tank.
[090] Figure 10 shows a perspective view of the chuck jaw 106 of Figure 1 according to certain embodiments. The mandrel claw 106 includes a faceplate 502 and a backplate 504 separated by a spacer 506. Inside the faceplate 502 is a cutting grip part 508 and an upper jaw 510 and a lower jaw 512, although it is understood that alternatively, or in addition, in certain embodiments, the jaws 510, 512 could be positioned side by side instead of top to bottom within the chuck jaw 106. The chuck jaw 106 also includes a cylinder 514 and piston rod 515 coupled to a cylinder support 516. The cylinder 514 operates to control the gripping and loosening of the upper jaw 510 and the lower jaw 512 with respect to the mandrel bar 100.
[091] Figures 11 and 12 show frontal elevation views of the chuck jaw 106 of Figure 10 in a closed or engaged gripping position (Figure 11) and a non-grasping or open position (Figure 12). As shown in Figure 11, for example, the upper jaw 510 and the lower jaw 512 are in a gripping position and engaged around a chuck bar part 518, which is the part of the chuck bar to which the jaws 510 , 512 hold. When the chuck jaw 106 is in a non-grasping or open position, as shown in Figure 12, the upper jaw 510 and the lower jaw 512 are offset from each other in relation to the gripping position and are thus displaced from the bar portion. mandrel 518, so that there is clearance along the mandrel part 518, and within the seizure cut 508, for a billet to pass through it.
[092] In certain embodiments, the upper jaw 510 and the lower jaw 512 are structured to fit with a corresponding part and a mandrel bar, such as the mandrel bar part 518 of the mandrel bar 540. Figure 13 shows a schematic view of a mandrel bar 540 having parts 518 that can be formed or otherwise configured to engage with the upper jaw 510 and the lower jaw 512 of the mandrel jaw 106. The particular shape of the mandrel bar parts 518 can assist chuck claw 106 to form and maintain a chuck bar 540 clamping jaw to prevent chuck bar 540 from rotating or otherwise move or displace during operation of the press system when the chuck bar 540 is held by the chuck jaw 106. As shown in Figure 13, for example, the two jaw parts 518 may correspond to the parts of the chuck bar that interface with the two chuck jaws 106, 108 of the press system. extrusion 10 of Figure 1.
[093] A perspective view of part 518 of chuck bar 540 is shown in Figure 14. The chuck bar part 518 is formed to engage with the chuck jaw such as chuck jaw 106 and includes a circumference part rounded 550 and several straight edges 552 and 554 that fit with the upper and lower jaws of a mandrel claw. The mandrel part 518 also includes several internal elements or cuts 556 and 558 formed to fit with complementary claws. As shown in Figure 14, the mandrel part 518 is hollow and includes an inner surface 540a for receiving an inner tube such as the inner tube 350 discussed above with respect to Figures 6 and 8.
[094] In certain embodiments, the mandrel bar extends along the length of the extrusion press system 10, ending at the end of the mandrel bar positioned within the rotating die. The mandrel bar may have a substantially continuous cross section along its length or may have parts thereof (such as parts 342, 348, 518 and the mandrel bar sleeve 360) formed to interface with the components of the press such as fluid regulators 102, 104 and chuck jaws 106, 108. In certain embodiments, the chuck bar can be modular and can comprise a plurality of attachable sections that together form the chuck bar for use with a system extrusion press. For example, the chuck bar 540 of Figure 13 can be configured to mate with the other chuck bars, or sections of chuck bars, such as the chuck bar 340 of Figure 6, which shows a part of a chuck bar 340 used to couple with fluid regulators. In order to couple these modular parts of a chuck bar together, chuck bar 540 is provided with ends 542 and 544 that receive the complementary ends of another chuck bar.
[095] Figure 15 shows a perspective view of the press piston assembly 141 of Figure 1 having guide elements for guiding the press piston assembly 141 along the rods 124 according to certain modalities. As shown in Figure 15, for example, the first press piston plate 130 and the second press piston plate 140 include guide elements 600 and 610, respectively. The guide element 600 of the press piston plate 130 has support plates 602 coupled to bearings 604, bearings 604 that are configured to move the press piston 130 along rods such as rods 124 of Figure 1. The guide element 610 of the press piston plate 140 also includes suspension plates 612 and several bearings 614 configured to move the press piston 140 along the risers 124. The suspension plate 614 of the guide element 610 is positioned above where the risers 124 are located and the suspension plate 602 of the guide element 600 is located above the position in which the risers 124 are located. These guide elements 600, 610 allow the press piston plates 130, 140 to move along the rods 124 as the extrusion process operates so that the press piston plates 130, 140 can hold and advance the billets to the rotating die and then the retraction to start the next cycle.
[096] Figure 16 shows a perspective view of the press piston plate 130 of Figure 1 according to certain modalities. Figures 17 to 19 show front, side, and rear elevation views, respectively, of the press piston plate 130 of Figure 16. The press piston plate 130 includes a claw mounting plate 620 and first and second billet claw connection 622 and 624 which are coupled to a cylinder 626 around a pivot 625. The cylinder 626 operates to move the first and second connecting arms 622, 624 together and around the pivot 625. The plate claw assembly 620 is coupled to connecting arms 622, 624 and separated by a spacer 621 between them. As shown in Figure 19, the first and second jaws 630, 632 are mounted to the first and second connecting arms 622, 624, and are supported by a lower support 634 and an upper support 635. In certain embodiments, the gripping surfaces 630a, 632a of the first and second jaws 630, 632, may have a sawn or otherwise textured surface to improve the frictional contact between the gripping surfaces 630a, 632a and a secured billet.
[097] Figure 20 shows a perspective view of the press piston plate 140 of Figure 1 according to certain modalities. Figures 21 to 23 show front, side, and rear elevation views, respectively, of the press piston plate 140 of Figure 20. The press piston plate includes a claw mounting plate 640 and first and second connecting arms billet claw 642 and 644 which are coupled to a cylinder 646 around a pivot 645. The cylinder 646 operates to move the first and second connecting arms 642, 644 together and around the pivot 645. The mounting plate press plate 640 is coupled to the connecting arms 642, 644 and separated by a spacer 641 between them. As shown in Figure 23, the first and second jaws 650, 652 are mounted to the first and second connecting arms 642, 644, and are supported by a lower support 654 and upper support 655. In certain embodiments, the gripping surfaces 650a, 652a of the first and second grips 650, 652 may have a sawn or otherwise textured surface to increase the frictional contact between the gripping surfaces 650a, 652a and a secured billet.
[098] In certain embodiments, one or both of the first press piston 130, 140 may include centering connections. For example, the centering connections can be coupled to the connecting arms 622, 624 and / or the cylinder 626 of the first press piston 130 to synchronize the movement of the respective press piston arms 130 around the pivot 625. This prevents, for example, the operation of cylinder 626 to extend one arm around pivot point 625 while the other arm remains stationary. When the movement of the arms 622, 624 is synchronized around the pivot 625 using the centering connections, both arms move together when holding and releasing the billets.
[099] A billet pressed through the die 160 is extruded by heat generated from friction and forces applied to the billet by an internal surface of the die 160. Before a billet is pressed in the die 160, the die and the centering insert 152 they are pressed together to form a sealed plug-in interface for extrusion, and this orientation is shown in Figure 24. During extrusion, die 160 rotates while billet 702 is pressed through the die. Billet 702 is held by claws in the centering insert 152, which does not rotate, and thus billet 702 does not rotate as it enters the rotating die 160 at the inlet 716 in the die. Rotating the die 160 creates friction with the outer surface of the non-rotating billet 702 as it is pressed through the die, and the friction heats billet 702 to a temperature sufficient for the billet material to deform. For example, a metal billet can be heated by friction to a temperature greater than 537.8 ° C (1000 ° F) for deformation. Temperature requirements for different materials and different metals may vary, and billet temperatures below 537.8 ° C (1000 ° F) may be suitable in some applications. In contrast to other extrusion systems, the extrusion set in Figure 24 does not require billet preheating prior to extrusion, as the rotation of the die 160 and the friction created by contact with the non-rotating billet 702 provides energy that heats up the billet at a deformable temperature.
[0100] While the billet 702 and the centering insert 152 do not rotate during the extrusion process, the matrix 160 and the base 700 to which the matrix body is connected are rotated by a motor driven spindle. As the billet 702 is advanced through the centering insert 152, it passes through the inlet 716 of the matrix 160 and comes into contact with an internal surface of the matrix, shown in more detail in Figures 25-28. In addition to the matrix 160 and the internal surface details shown in Figures 24-28, other matrix models or internal surface profiles can be implemented in a rotating matrix. For example, a die set for an extrusion system can be the die set described in US Patent Application. No. 13 / 650,981, filed on October 12, 2012, the description of which is incorporated herein by reference. A torsional force is applied to the outer surface of billet 702 due to the interference contact between the rotating die 160 and billet 702. The jaws on the centering insert 152 resist this torsional force and prevent billet 702 from rotating before entering in matrix 160, creating friction and producing the energy that heats billet 702.
[0101] The inner surface of die 160 exhibits a tapered profile that narrows the internal passage through die 160 from inlet 716 to an outlet 718. Thus, when force is applied to billet 702 to press the billet through die 160, the billet material 702 is extruded as the material's outer diameter is forced to decrease to pass through the interior of matrix 160 from inlet 716 to exit 718. The dimensions of matrix 160 and the interaction between the inner surface of matrix 160 and the billet 702 are described in more detail below with respect to Figures 25 to 28.
[0102] The cross-sectional view of the die 160 in Figure 25 shows the die 160 and the centering insert 152 positioned for extrusion. While matrix 160 is shown in Figure 25 as a single component of a single body, the matrix can also be composed of multiple matrix plates having holes and internal surfaces that form the passage and the internal surface of the matrix, as discussed below with respect to Figure 26. In this orientation, the opening 716 of the inner passage 720 in the matrix 160 is aligned with the centering insert 152 to receive a billet pressed through the opening 722 of the centering insert 152 and the matrix 160 along the central axis 724 of the passage inner 720. Inner surface 726 narrows inner passageway 720 from the larger diameter of the passageway in opening 716 to the smaller diameter at outlet 718, and narrowing of passageway 720 causes the narrowing deformation and extrusion of a pressed billet in the die 160 during operation. The extrusion requires that friction energy be produced at the interface of the inner surface 726 to heat the billet, and the energy is provided by the interaction of the rotating surface 726 and the non-rotating billet pressed into the die.
[0103] Figure 26 shows the matrix 160 in an alternative construction of matrix plates that form the matrix body 160. The matrix 160 in Figure 26 includes a steel end retainer 706, an entry plate 708, a first plate intermediate plate 710, a second intermediate plate 712, and an outlet plate 714. Each plate includes a hole through the center of the plate, and the holes are stacked adjacent to each other to form the inner passage 720 of the matrix 160. The inner surfaces surrounding the plate holes are angled to form the profile of the inner surface 726 and to narrow the inner passage 720 from the inlet 716 to the outlet 718. A potential advantage of using the plate construction is the ability to exchange individual plates when the inner surface areas 726 start to wear out, instead of having to replace the entire die 160. To reduce the effects of wear on the plates, each plate can also be built from two different materials, with a material surrounding the central hole of the plate and forming the inner surface 726 and a second material forming an outer perimeter of the plate. Wear reduction materials, such as ceramic or steel materials, can be used to form the perimeter of the hole, or a consumable material can be used and periodically replaced. Since the centering insert 152 does not rotate when the matrix 160 rotates, the material surrounding the hole in the steel end retainer 706 and forming the front face 738 of the matrix 160 can be the same or similar to the material of the centering insert 152 to reduce the effect of wear as two materials come into contact during extrusion.
[0104] To reduce the cost-increasing effect of friction wear on each of the plates in the matrix 160, the plates can be designed to focus wear on one or more plates that are replaced more frequently than the remaining plates. Such a model can allow the matrix to be operated by producing multiple copies of a single plate and a single plate for the rest of the plates in the stack. For example, in the stack shown in Figure 26, the second intermediate plate 712 exhibits a non-uniform surface profile around the central hole through the plate. The inner surface of the plate 712 includes a first part 740 that is angled at a steeper angle than the other inner surfaces in the stack of matrix plates and a second part 742 that is angled similarly to the other inner surfaces in the stack. The sharp angle of the first part 740 creates a greater decrease in diameter in this section of the inner surface in relation to the other plates in the stack, and thus creates a greater frictional force and potential for wear in the first part 740. This wear can be reduced by placing a corresponding angled part of a chuck bar within the passage 720 near part 740 to further reduce the costs created by the need to replace the plate 712. In certain implementations, the angle of the perimeter of the hole in each plate may increase from the rear face of the first plate to the front face of the next plate towards the matrix exit. For example, in Figure 26, the angle of each internal perimeter near the front face of each plate is greater than the angle of the internal surface near the rear face of the adjacent plate positioned closest to the matrix entrance. This model may be desired, for example, to focus the work and tension towards the outlet of the matrix 160, and may result in a need to replace plates close to outlet 718, for example, plates 714 and 712, more often than plates that are closest to entrance 716.
[0105] In addition to focusing the work and tension within the matrix 160, the mechanical and thermal properties of the billet materials can dictate the number and model of the plates in a matrix set. For example, a billet material having high thermal conductivity can heat up to a deformable temperature more quickly than a material having a low thermal conductivity, and thus a shorter matrix with fewer plates can be used for the material with high conductivity. In addition, the angles of narrowing of the inner surface of a die may be greater for the high conductivity material as a result of faster heating of the billet. In other implementations, matrices of equal size having the same number of plates can be used, and the narrowing angles of the matrices may differ to accommodate different thermal properties and heat the billets to a deformable temperature, while still focusing on work and wear on a desired area of the die surface and the surface of a mandrel tip within the die, or while spreading the work and wear over the surfaces.
[0106] If a single body or matrix of matrix plate stack is implemented, a billet pressed through matrix 160 produces an extruded tube product through outlet 718 of matrix 160 having an outside diameter that is similar to diameter d1, the diameter at the narrowest part of the inner passage 720. The inner diameter of the extruded product is selected by advancing the mandrel bar 100 in the matrix 160 with a mandrel bar tip, such as the mandrel bar tip 800, having an end dimension selected to create the inner diameter of the tube product at the end of the chuck bar 100.
[0107] Figure 27 shows the matrix 160 with the mandrel bar 100 and the end of the mandrel bar 800 advanced through the centering insert 152 and to the central passage 720 of the matrix 160. As discussed above with respect to Figure 1, gripping elements in an extrusion press system can be used to hold the chuck bar 100 and in the orientation shown in Figure 27 and to resist rotation while the die 160 is rotated and a billet passes over the chuck bar 100.
[0108] Figure 28 shows the die and chuck bar configuration in Figure 27 as billet 702 is passed through die 160 and extruded to form pipe 728. During extrusion, die 160 is rotated while mandrel bar 100 and centering insert 152 are kept stationary. Billet 702 is pressed in die 160 in the direction of arrow A and contacts inner surface 726 of die 160 at a first contact point 730. The interference contact between inner surface 726 and billet 702 begins at contact point 730 and generates energy that heats billet 702 to a deformable plastic temperature. The model of the inner surfaces and the profile of the inner surface of the die may differ for different applications, and in particular, for the extrusion of different materials. Depending on the material properties of the billets used for extrusion, for example, the heat transfer properties that can affect the heating of the billets during extrusion, the internal profile of matrix plates in a matrix body can be varied to focus or spread work and wear on the matrix plates. In addition, the die rotation speed can be varied for a particular extrusion to increase the die efficiency and avoid the properties of excess billet material. For example, a die rotation speed between approximately 200 rpm and approximately 1000 rpm can be used. In certain implementations, a slower rotation speed, for example, approximately 300 rpm, may be desired to avoid applying a high level of torsional shear to a billet while still heating the billet to a temperature sufficient for deformation. A faster speed, for example, approximately 800 rpm, can be used for a material that is not adversely affected by a higher torsional shear or that requires more energy, and thus greater friction, to heat to a deformation temperature. In other implementations, die rotation speeds in excess of 100 rpm may be desired for extrusion.
[0109] As the billet 702 is advanced over the intermediate part 732 of the end of the mandrel bar 800, the narrowing of the inner surface 726 applies a compressive force to the outer surface of billet 702 which presses billet 702 inwardly towards to the end of the mandrel bar 800. As the billet 702 is in a state of plastic deformation, the material in the billet extrudes towards the end part 734 of the end of the mandrel bar 800 as the die 160 decreases the outside diameter of the billet 702 from the original diameter d2 to a final outside diameter d3. When billet 702 reaches the intermediate part 732, narrowing the end of the mandrel bar 800 towards the end part 734 causes the inner diameter of billet 702 to extrude and decrease from the original diameter d4 as the billet advances more on the tip of the mandrel bar 800. The tapered surface of the mandrel bar tip 800 on the intermediate part 732 can be positioned close to a sharp angled part of the inner surface 726, for example, close to a first sharp angled part 740, as discussed above with respect to the second intermediate plate 712. This orientation positions the tapered intermediate part 732, and the area in which the inner diameter of a billet passing over the end of the mandrel bar 800 is decreased, at the same location as the force of greater compression produced by the inner surface 726 on the matrix 160.
[0110] When the extruded billet 702 reaches end part 734, the inner diameter of the billet is reduced from the original diameter d4 to the final diameter d5 of end pipe product 728. As billet 702 passes over the end part 734, the outer diameter of billet 702 continues to decrease to the final outer diameter d3 when the extruded pipe product 728 exits in the die at outlet 718. At the exit point, the formation of extruded product 728 is complete. Due to friction and heating within the die 160, the product 728 is at a high temperature upon exit from the die 160, and a cooling element can be applied to prevent further deformation or increase the operational safety of the extrusion press, eliminate escaping extruded material, or maintaining desired material characteristics. A hole 736 in the base plate 700 is shown in Figure 28 with a diameter larger than the diameter of the outlet of the die 718. This configuration may be preferred to allow the cooling elements and cooling fluid to reach the base plate 700 and contact extruded product 728 as soon as it leaves matrix 160 for early cooling. After product 728 leaves base plate 700 and passes through a cooling system, the extrusion process is complete, and product 728 can be assembled for post-processing.
[0111] Figures 29 and 30 show a perspective view and a plan view from above, respectively, of ends of the mandrel bar according to certain modalities. The end of the mandrel bar 800 includes a connector 802 that mates with a mandrel bar to form the end of the mandrel bar of the mandrel bar. The chuck bar tip 800 also includes several extrusion contact surfaces 804 that contact the inner surface of a hollow billet as the billet passes over the chuck bar tip 800, which is positioned within the rotating die. The end of the mandrel bar 800 has a terminal contact surface 806 with a diameter D1 that shapes the inner diameter of the extruded tubing. During the extrusion process, the rotating die rotates against the billet and thus generates heat, which softens the billet to allow plastic deformation of the billet. During the operation of the extrusion press system 10, the combination of the rotating die 160 and the mandrel bar tip 800 causes the plastic deformation zone of the billet to generally occur in the plastic deformation zone 808 of the mandrel bar tip 800 .
[0112] The end of the mandrel bar 800 can have any suitable diameter along the extrusion surfaces 804 as well as the terminal contact surface 806. For example, in certain embodiments, as shown by the end of the mandrel bar 820, the surface terminal contact 826 can have a configured diameter D2 that is relatively larger than the configured diameter D1 of the end of the mandrel bar 800. In certain embodiments, each of the contact surfaces 804 of the end of the mandrel bar 800 can correspond to the respective profile of the various matrix plates within the rotating matrix.
[0113] Figure 31 shows a flowchart for pre-processing a billet for use in the extrusion press system 10 of Figure 1 according to certain modalities. In step 1010, the billet is cast using any suitable casting process. For example, casting a billet may include using a smelting furnace to produce a billet of desired proportions. The molten billet can then be linearized using a roll linearization process in step 1020, followed by machining the rolled billet in step 1030. Machining the rolled billet includes, for example, cleaning any rough edges or surfaces of the billet. In step 1040, the machined billet can be cured and sized. Deforming hardening may include compressing the billet to induce the deforming hardening effects that allow the billet to withstand the pressure forces exerted on the billet during the press piston extrusion process (eg, press piston plates 130, 140 of the Figure 1), as well as the rotational and shear stresses induced by a rotating die (for example, rotating die 160 of Figure 1). In step 1050, the billet can again be linearized using any suitable linearization device. In step 1060, the ends of the billet are trimmed. The chip allows to remove imperfections or other deformations at the ends of the billet, for example, which may have been introduced during previous processing steps or during casting. The billet can then be cleaned in step 1070 using any suitable cleaning solution such as a water-soluble degreasing solution or a combination of cleaning solutions. In step 1080, the inner diameter of the billet can be lubricated with any suitable lubricating fluid including graphite lubricants, petroleum based composites or synthesized non-petroleum based compounds, any suitable lubricating fluid or combinations thereof.
[0114] Figure 32 shows a flow chart for pre-processing a chuck bar tip, such as the chuck bar tip 800 or 820 of Figures 28 and 29, for use in the extrusion press system 10 of Figure 1 of according to certain modalities. In step 1110, the end of the mandrel bar can be heated using any suitable heating process. For example, the end of the chuck bar can be placed in a furnace or heated with a torch until the end of the chuck bar is greater than approximately 537.78 ° C (1,000 degrees Fahrenheit). After this heat treatment, in step 1120, the end of the mandrel bar can be cooled in lubricant and agitated to ensure a consistent deposit of the lubricant. In certain embodiments, the lubricant is a graphite lubricant, although any other suitable lubricant or combinations thereof may be used. In step 1130, the end of the mandrel bar is allowed to cool after cooling. In step 1140, any excess lubricant is removed from the end of the chuck bar. The end of the chuck bar is then reheated in step 1150 to more than approximately 537.78 ° C (1,000 degrees Fahrenheit) and cooled in lubricant and agitated in step 1160 to ensure a consistent deposit of the lubricant. In certain embodiments, the end of the chuck bar is cooled using a second lubricant that is different from the first lubricant used in step 1120. For example, the lubricant used in step 1120 can be a graphite lubricant and the lubricant used in step 1160 can be be a petroleum-based composite or a non-petroleum-based synthetic compound, or any other suitable lubricant that is different from the first lubricant. In certain embodiments, the lubricant used in step 1160 can be the same as that used in step 1120. In step 1170, the end of the chuck bar is allowed to cool after the 1160 cooling step. In certain embodiments, after completing the process 1170, process steps 1150, 1160, and 1170 can be repeated. In such embodiments, the lubricant used in the repeated cooling step may be the same as that used in the previous step 1160, a lubricant that may be the same or different from that used in the first cooling step 1120.
[0115] Figures 33 to 36 show several flowcharts representing processes for operating an extrusion press system, such as the extrusion press system 10 of Figure 1, according to certain modalities, Steps 1210 to 1240 i-θpi- θsθntam certain exemplified steps of the billet delivery subsystem 20 of the extrusion press system. Step 1250 represents certain exemplified steps of the extrusion subsystem 40 of the extrusion press system, and step 1260 represents certain exemplified steps of the cooling subsystem 60 of the extrusion press system. It is understood that the steps of the flowcharts in this description are merely illustrative. Any of the steps in the flowcharts can be modified, omitted, or rearranged, two or more of the steps can be combined, or any additional steps can be added, without departing from the scope of this description.
[0116] Process 1200 begins at step 1210, where one or more billets are loaded around the receiving end 100a of the mandrel bar near the first fluid regulator or upstream 102. Each billet in the present description is hollow to the along the length of the billet, which allows the billets to be placed on the stationary mandrel bar 100 such that the billet moves and is transported along and around the mandrel bar 100. In certain embodiments, the billet delivery subsystem 20 of the extrusion press system 10 can include a billet delivery table with a plurality of billets prepared for loading in the extrusion press system 10. Billets can be loaded automatically by an automated process or can be loaded manually, once loaded , billets can be transported along the chuck bar by a billet feed rail assembly such as rail assembly 110 shown in Figure 2, which includes a rail 202 that moves intermittently depending on the position of particular billets relative to fluid regulators 102, 104 and chuck jaws 106, 108.
[0117] In step 1220, the billets are transported along the mandrel bar and through the fluid regulators, which when attached to the mandrel bar deliver cooling fluid to the end of the mandrel bar. At any given time, at least one of the fluid regulators is preferably attached or otherwise engaged with the chuck bar to provide a continuous or substantially continuous delivery of cooling fluid to the chuck bar. The steps for passing one or more billets through the respective fluid regulators in the extrusion press system are shown in Figure 34. For example, in step 1400, one or more billets are transported to a first upstream fluid regulator such as fluid regulator 102 of the extrusion press system 10. The PLC system determines whether the first fluid regulator is engaged with the chuck bar in decision block 1402. If the first fluid regulator is engaged with the chuck bar, the PLC system then determines whether the second fluid regulator is engaged with the chuck bar in decision block 1404. In certain embodiments, both fluid regulators can be engaged with the chuck bar when billets are not being passed through the regulators of fluid. If the second fluid regulator is engaged, then in step 1410, the first fluid regulator is disengaged. However, if the second fluid regulator is not engaged, in step 1404, the PLC system determines that the second fluid regulator is transporting billets through it and expects the billets to clean the second fluid regulator in step 1406. Then, in step 1408, the second fluid regulator is engaged and the process continues to step 1410 where the first fluid regulator is disengaged. After the first fluid regulator is disengaged in step 1410, or if the first fluid regulator is already determined to be disengaged in decision block 1402, the process continues to step 1412 where one or more billets are advanced through the first fluid. While the first fluid regulator is disengaged to allow the billets to pass through it, the second fluid regulator is engaged with the mandrel bar and delivering the cooling fluid to the mandrel bar. After a desired number of billets have advanced through the first fluid regulator, the first fluid regulator is engaged with the chuck bar in step 1414 and the billets are transported to the second fluid regulator in step 1420.
[0118] Process 1220 with respect to the second fluid regulator is substantially similar to that performed by the PLC system for the first fluid regulator and is also shown in Figure 34. In step 1420, one or more billets are transported to a second fluid regulator downstream fluid such as fluid regulator 104 from the extrusion press system 10. The PLC system determines whether the second fluid regulator is engaged with the chuck bar in decision block 1422. If the second fluid regulator is engaged with the chuck bar, the PLC system then determines whether the first fluid regulator is engaged with the chuck bar in decision block 1424. In certain embodiments, both fluid regulators can be engaged with the chuck bar when the billets are not are being passed through the fluid regulators. If the first fluid regulator is engaged, then in step 1430, the second fluid regulator is disengaged. However, if the first fluid regulator is not engaged, in step 1424, the PLC system determines that the first fluid regulator is transporting billets through it and expects the billets to leave the first fluid regulator in step 1426. Then in step 1428 , the first fluid regulator is engaged and the process continues at step 1430 where the second fluid regulator is disengaged. After the second fluid regulator is disengaged in step 1430, or if the second fluid regulator has already been determined to be disengaged in decision block 1422, the process continues to step 1432 where one or more billets are advanced through the second regulator of fluid. While the second fluid regulator is disengaged to allow the billets to pass through it, the first fluid regulator is engaged with the mandrel bar and delivers cooling fluid to the mandrel bar. After a desired number of billets have been advanced through the second fluid regulator, the second fluid regulator is engaged with the chuck bar in step 1434.
[0119] Regarding process 1200 of Figure 33, in step 1230, the billets are transported along the mandrel bar and through the mandrel claws, which when attached to the mandrel bar hold the mandrel bar in place and prevent rotation of the mandrel bar. At any given time, at least one of the mandrel claws is preferably fixed or otherwise engaged with the mandrel bar. The steps for passing one or more billets through the respective chuck jaws of the extrusion press system are shown in Figure 35. For example, in step 1500, one or more billets are transported to a first upstream chuck jaw such as chuck jaw 106 from the extrusion press system 10. The PLC system determines whether the first chuck jaw is engaged with the chuck bar in decision block 1502. If the first chuck jaw is engaged with the chuck bar, the The PLC system then determines whether the second chuck jaw is engaged with the chuck bar in decision block 1504. In certain embodiments, both chuck jaws can be engaged with the chuck bar when billets are not being passed through the jaws of mandrel. If the second chuck jaw is engaged, then in step 1510, the first chuck jaw is disengaged. However, if the second chuck jaw is not engaged, in step 1504, the PLC system determines that the second chuck jaw is carrying billets through it and expects the billets to leave the second chuck jaw in step 1506. Then, in step 1508, the second mandrel jaw is engaged and the process continues to step 1510 where the first mandrel jaw is disengaged. After the first chuck jaw is disengaged in step 1510, or if the first chuck jaw has already been determined to be disengaged in decision block 1502, the process continues to step 1512 where one or more billets are advanced through the first chuck mandrel. While the first chuck jaw is disengaged to allow the billets to pass through it, the second chuck jaw is engaged with the chuck bar. After a desired number of billets has been advanced through the first chuck jaw, the first chuck jaw is engaged with the chuck bar in step 1514 and the billets are transported to the second chuck jaw in step 1520.
[0120] Process 1230 with respect to the second chuck is substantially similar to that performed by the PLC system for the first chuck and is also shown in Figure 35. In step 1520, one or more billets are transported to a second chuck downstream chuck such as the chuck jaw 108 of the extrusion press system 10. The PLC system determines whether the second chuck jaw is engaged with the chuck bar in decision block 1522. If the second chuck jaw is engaged with the chuck bar, the PLC system then determines whether the first chuck jaw is engaged with the chuck bar in decision block 1524. In certain embodiments, both chuck jaws can be engaged with the chuck bar when the billets are not are being passed through the mandrel claws. If the first chuck jaw is engaged, then in step 1530, the second chuck jaw is disengaged. However, if the first chuck jaw is not engaged, in step 1524, the PLC system determines that the first chuck jaw is transporting billets through it and expects the billets to leave the first chuck jaw in step 1526. Then, in step 1528, the first chuck jaw is engaged and the process continues to step 1530 where the second chuck jaw is disengaged. After the second mandrel claw is disengaged in step 1530, or if the second mandrel claw has already been determined to be disengaged in decision block 1522, the process continues to step 1532 where one or more billets are advanced through the second claw of mandrel. While the second chuck jaw is disengaged to allow the billets to pass through it, the first chuck jaw is engaged with the chuck bar. After a desired number of billets has been advanced through the second chuck jaw, the second chuck jaw is engaged with the chuck bar in step 1534.
[0121] Returning to process 1200 of Figure 33, in step 1240, the billets are held and then advanced using press pistons. The press pistons provide a substantially constant compression force against the billets held towards the rotating die. The PLC system controls the rate at which the press pistons operate and thus controls the entry of billets into the rotating die. The steps for grabbing and advancing the billets using press pistons from the extrusion press system are shown in Figure 36. For example, in step 1600, a billet is held by a first upstream press piston such as the press piston 130 of the extrusion press system of Figure 1. The first press piston is advanced towards the second press piston downstream in step 1602. The PLC system determines whether the second press piston has been retracted to a receiving position to receive the billet in decision block 1604. If the second press piston is not in position, then in step 1606, the first press piston continues to advance the billet until the second press piston is in position. If the second press piston is in position in step 1604, then the billet is held by the second press piston in step 1608. The first and second press pistons continue to advance the billet together in step 1610. This can ensure that a continuous or substantially continuous compression force is applied to the billet in the direction of the rotating die. In step 1612, the first press piston releases the billet (while the second press piston continues to advance the billet) and in step 1614, the first press piston is retracted to a receiving position to hold a subsequent billet. This arm-on-arm process allows the rotating die to receive a steady stream of billets at a given feed rate. Before the first press piston holds the billet in step 1600, the feed rail assembly can continuously index the track to minimize the spaces between adjacent billets queued to be advanced by the press pistons.
[0122] In step 1250, the billets are extruded to form an extruded material. The press pistons of step 1240 advance the billets through a centering insert (for example, centering insert 152 of Figure 1) having a plurality of notches that prevent the billets from rotating before entering the rotating die. Once a billet enters the rotating die, the die simultaneously heats the billet and sets the billet's outer diameter as it is extruded to form the extruded material. The mandrel bar is positioned to place the tip of the mandrel bar within the rotating die. The end of the mandrel bar sets the internal diameter of the extruded material. The position of the mandrel bar in relation to the die can be controlled by the PLC system. The PLC system can also control the speed of rotation of the rotating die using a motor 170 coupled to spindle 172.
[0123] In step 1260, the extruded material is cooled as it leaves the rotating die. This step includes rapidly cooling the extruded material by spraying the cooling fluid such as water, or any other cooling fluid, at a high speed from a cooling pipe in the extruded material. Despite the temperatures generated during the extrusion process of step 1250, upon exiting the cooling pipe, the extruded material is relatively cold enough to touch so that it can be handled without causing burns. Furthermore, in certain embodiments, nitrogen gas or other suitable inert gas is delivered to the interior of the extruded material as it leaves the rotating die. For example, nitrogen gas can be delivered to the interior of the extruded pipe using a cap placed on the pipe as it exits the rotating die. Injecting gaseous or liquid nitrogen into the rotating die assembly, or into the extruded material itself, can minimize the formation of oxide by displacing oxygen-charged air.
[0124] It is understood that as one or more billets proceed through process 1200 as described, other billets may be advancing through the extrusion press system at any of the other steps in process 1200. For example, as a first set of billets, including one or more billets, is transported through the fluid regulators in step 1220, another set of billets, including one or more billets, can be simultaneously loaded onto the mandrel bar in step 1210 or transported through the claws chuck in step 1230 or any other step in process 1200. In this way, the extrusion press system is operable to continuously feed a plurality of billets in a rotating die to extrude the billets to form an extruded material.
[0125] Figure 37 shows a block diagram of a programmable logic control system to operate the extrusion press system of Figure 1 according to certain modalities. As discussed above, the extrusion press system 10 comprises the functional subsystems of a billet delivery subsystem 20, an extrusion subsystem 40, and a cooling or cooling subsystem 60. The operation of certain components in any or more of these subsystems 20, 40, 60 can be controlled by the PLC 1700 system. Various operational steps of subsystems 20, 40, 60 are described above with respect to process 1200 of Figures 33 to 36.
[0126] Instructions for executing the methods in this description to extrude a material can be encoded in a machine-readable medium, to be executed by a suitable computer or similar device to implement the methods of the description to program or configure PLCs or other programmable devices with a configuration as described above. For example, a personal computer can be equipped with an interface to which a PCL can be connected, and the personal computer can be used by a user to program the PLC using suitable software tools.
[0127] Figure 38 shows a cross section of a 1800 magnetic data storage medium that can be encoded with a machine executable program that can be run by systems such as the personal computer mentioned above, or other computers or similar devices. Medium 1800 can be a floppy disk or hard disk, or magnetic tape, having a suitable substrate 1801, which can be conventional, and a suitable coating 1802, which can be conventional, on one or both sides, containing magnetic domains (not visible) whose polarity or orientation can be magnetically altered. Except where it is magnetic tape, the medium 1800 may also have an opening (not shown) for receiving the spindle from a hard drive or other data storage device.
[0128] The magnetic coating domains 1802 of the middle 1800 are polarized or oriented in order to encode, in a conventional way, a program executable by machine, for execution by a programming system such as a personal computer or other computer or similar system, having a peripheral socket or coupling in which the PLC to be programmed can be inserted, to configure appropriate parts of the PLC, including its specialized processing blocks, if any, according to the present description.
[0129] Figure 39 shows a cross section of an optically readable 1810 data storage medium that can also be encoded with such a machine executable program, which can be run by systems such as the personal computer mentioned above, or other computers or similar devices. The 1810 medium can be conventional read-only compact disc (CD-ROM) memory or read-only digital video disc (DVD-ROM) memory or a rewritable medium such as a CD-R, CD-RW, DVD -R, DVD-RW, DVD + R, DVD + RW, or DVD-RAM or a magneto-optical disc that is optically readable and magneto-optically rewritable. The medium 1810 preferably has a suitable substrate 1811, which can be conventional, and a suitable coating 1812, which can be conventional, generally on one or both sides of the substrate 1811.
[0130] In the case of a CD or DVD based medium, as is well known, the 1812 coating is reflective and is printed with a plurality of 1813 gaps, arranged in one or more layers, to encode the machine executable program. The gap arrangement is read by reflecting laser light on the surface of the 1812 coating. A protective coating 1814, which is preferably substantially transparent, is provided on top of the coating 1812.
[0131] In the case of a magneto-optical disc, as is well known, the 1812 coating has no gaps 1813, but has a plurality of magnetic domains whose polarity or orientation can be magnetically altered when heated above a certain temperature, such as by a laser (not shown). The orientation of the domains can be read by measuring the polarization of the reflected laser light from the 1812 coating. The arrangement of the domains encodes the program as described above.
[0132] A PLC 1700 programmed according to the present description can be used in many types of electronic devices. One possible use is in a 1900 data processing system shown in Figure 40. The 1900 data processing system can include one or more of the following components: a 1901 processor, 1902 memory, 1903 I / O circuit, and 1904 peripheral devices. These components are coupled together by a 1905 system bus and are populated on a 1906 circuit board that is contained in a 1907 end user system, which can include a 1407 end unit to operate an extrusion press system.
[0133] The 1900 system can be used in a wide variety of applications, including as instrumentation for an extrusion press system, or any other suitable application where the advantage of using programmable or reprogrammable logic is desirable. The 1700 PLC can be used to perform a variety of different logic functions. For example, the PLC 1700 can be configured as a processor or controller that works in cooperation with the 1901 processor. The PLC 1700 can also be used as an arbiter to arbitrate access to shared resources in the 1900 system. In yet another embodiment, the PLC 1700 can be configured as an interface between the 1901 processor and one of the other components in the 1900 system. It should be noted that the 1900 system is only exemplified. For example, in certain embodiments, a user terminal can be supplied close to the extrusion press system. In other embodiments, a network arrangement that can be provided can allow the user terminal to be remote from the extrusion press system.
[0134] Figure 41 is a block diagram of a 2200 computing device used to perform at least some of the logical processing of the extrusion press described above in accordance with certain modalities. The computing device 2200 comprises a PLC system such as the PLC 1700, and at least one network interface unit 2204, an input / output controller 2206, system memory 2208, and one or more data storage devices 2214. System memory 2208 includes at least one random access memory (RAM) 2210 and at least one read-only memory (ROM) 2212. All of these elements are in communication with a central processing unit (CPU) 2202 to facilitate operation of the 2200 computing device. The 2200 computing device can be configured in many different ways. For example, the 2200 computing device can be a conventional stand-alone computer or alternatively, the functions of the 2200 computing device can be distributed across multiple computer systems and architectures. The 2200 computing device can be configured to perform some or all of the extrusion press logical processing described above, or these functions can be distributed across multiple computer systems and architectures. In the embodiment shown in Figure 23, computing device 2200 is connected, via communications network 2150 or local area network 2124, to third parties 2224 through communications network 2150.
[0135] The 2200 computing device can be configured in a distributed architecture, where databases and processors are housed in separate units or locations. The computing device 2200 can also be implemented as a server located either on a site in the extrusion press installation or outside the extrusion press installation. Some of these units perform primary processing functions and contain at least a general controller or processor 2202 and system memory 2208. In such an embodiment, each of these units is coupled via the network interface unit 2204 to a connector or port communications (not shown) that serves as a primary communications link with other server computers, client or user computers, and other related devices. The communications connector or port may have minimal throughput, serving primarily as a communications router. A variety of communications protocols can be part of the system, including, but not limited to: Ethernet, SAP, SAS ™, ATP, BLUETOOTH ™, GSM and TCP / IP.
[0136] CPU 2202 comprises a processor, such as one or more conventional microprocessors, and one or more supplementary coprocessors, such as mathematical coprocessors, to empty the workload from CPU 2202. CPU 2202 is in communication with network interface unit 2204 and the input / output controller 2206, through which CPU 2202 communicates with other devices such as other servers, user terminals, or devices. The network interface unit 2204 and / or the input / output controller 2206 can include multiple communication channels for simultaneous communication with, for example, other processors, servers or client terminals. Devices communicating with each other need not be continuously transmitting to each other. On the contrary, such devices only need to transmit to each other when necessary, they can actually refrain from exchanging data most of the time, and may require several steps to be taken to establish a communication link between the devices.
[0137] CPU 2202 is also in communication with data storage device 2214. Data storage device 2214 may comprise an appropriate combination of magnetic, optical and / or semiconductor memory, and may include, for example, RAM, ROM, fast memory, an optical disk such as a compact disk and / or a hard disk. CPU 2202 and data storage device 2214 can, for example, be located entirely within a single computer or other computing device, or connected together by means of communication, such as a USB port, serial port cable , a coaxial cable, an Ethernet-type cable, a telephone line, a radio frequency transceiver or other wireless or similar wire or combination of the above. For example, CPU 2202 can be connected to data storage device 2214 via network interface unit 2204.
[0138] CPU 2202 can be configured to perform one or more particular processing functions. For example, computing device 2200 can be configured, via the PLC, to control at least in part one or more aspects of billet delivery subsystem 20, extrusion subsystem 40, and cooling subsystem 60.
[0139] The data storage device 2214 can store, for example, (i) an operating system 2216 for the computing device 2200; (ii) one or more 2218 applications (for example, computer program code and / or a computer program product) adapted to target CPU 2202 in accordance with the present invention, and particularly in accordance with the processes described in detail with respect to CPU 2202; and / or (iii) 2220 database (s) adapted to store information that can be used to store information required by the program.
[0140] The 2216 operating system and / or the 2218 applications can be stored, for example, in a compressed, uncompiled and / or encrypted format, and may include computer program code. The program instructions can be read into the processor's main memory from a computer-readable medium other than the 2214 data storage device, such as from ROM 2212 or RAM 2210. While executing instruction sequences in the program causes CPU 2202 to perform the process steps described here, the wire circuit can be used in place of, or in combination with, software instructions for implementing the processes of the present invention.
[0141] The term “computer-readable medium”, as used here, refers to any non-transitory medium that provides or participates in providing instructions to the computing device processor (or any other device processor described here) for execution . Such a medium can take many forms, including, but not limited to, non-volatile and volatile media. Non-volatile media include, for example, optical, magnetic, or opto-magnetic disks, or integrated circuit memory, such as fast memory. Volatile media include dynamic random access memory (DRAM), which is typically the main memory. Common forms of computer-readable media include, for example, a floppy disk, a hard disk, magnetic tape, any other magnetic medium, a CD-ROM, DVD, any other optical medium, perforated cards, paper tape, any other medium physical with hole patterns, a RAM, a PROM, an EPROM or EEPROM (electronically erasable programmable read-only memory), a FLASH-EEPROM, any other memory card or cartridge, or any other non-transitory medium from which a computer can read.
[0142] Various forms of computer-readable media may be involved in loading one or more sequences of one or more instructions to CPU 2202 (or any other device process described here) for execution. For example, instructions can initially be generated on a magnetic disk on a remote computer (not shown). The remote computer can load the instructions into its dynamic memory and send the instructions over an Ethernet connection, cable line, or even a telephone line using a modem. A communications device local to a computing device (for example, a server) can receive data on the respective communications line and place the data on a system bus for the processor. The system bus loads data into main memory, from which the processor restores and executes instructions. The instructions received by main memory can be optionally stored in memory either before or after execution by the processor. In addition, instructions can be received via a communication port as electrical, electromagnetic or optical signals, which are exemplified forms of wireless communications or data streams that carry various types of information.
[0143] The above is merely illustrative of the principles of the description, and the systems, devices and methods can be practiced by someone other than the described modalities, which are presented for purposes of illustration and not of limitation. It is understood that the systems, devices and methods discussed here, while shown for use in extrusion press systems, can be applied to systems, devices and methods for use in other manufacturing processes including, but not limited to, casting processes and lamination, and heat treatment. In addition, the description could be implemented as a post-processing step of another manufacturing process, including other extrusion processes, or it could be implemented simultaneously with another manufacturing process.
[0144] Variations and modifications will occur to those skilled in the art after reviewing this description. The described features can be implemented, in any combination and subcombination (including multiple combinations and dependent subcombination), with one or more other features described here. The various features described or illustrated above, including any components, can be combined or integrated into other systems. In addition, certain features can be omitted or not implemented.
[0145] Examples of changes, substitutions, and changes are evaluable by a person skilled in the art and could be done without abandoning the scope of the information described here. All references cited here are incorporated by reference in their entirety and made as part of this order.

权利要求:
Claims (53)
[0001]
1. Method for continuously loading and extruding a plurality of billets (30, 702), the method CHARACTERIZED by the fact that it comprises: loading a first billet on a receiving end of an elongated chuck bar (100, 340, 540), the first billet having a hole through it; transport the first billet along the mandrel bar (100, 340, 540) and through gripping elements (106, 108) that hold in place and prevent rotation of the mandrel bar (100, 340, 540), where at any given time at least one of the gripping elements (106, 108) is holding the mandrel bar (100, 340, 540); and extruding the first billet to form an extruded material by pressing the first billet through a rotating die (160), wherein the first billet is followed by a second adjacent billet that forms a part of the extruded material, the second billet having a hole through his.
[0002]
2. Method, according to claim 1, CHARACTERIZED by the fact that it additionally comprises: transporting the first billet along the mandrel bar (100, 340, 540) and through cooling elements (102, 104) that fix to the chuck bar (100, 340, 540) and delivers cooling fluid to the chuck bar (100, 340, 540), in which at any given time, at least one cooling element is attached to the chuck bar (100, 340 , 540).
[0003]
3. Method according to claim 2, CHARACTERIZED by the fact that the first billet is transported along the mandrel bar (100, 340, 540) via a track (202) that moves intermittently depending on the position of the first billet in relation to the seizure elements (106, 108) and the cooling elements (102, 104).
[0004]
4. Method according to claim 2 or 3, CHARACTERIZED by the fact that the cooling fluid is transported to a chuck bar tip (800) provided at a second end of the chuck bar (100, 340, 540) opposite the receiving end.
[0005]
5. Method according to claim 4, CHARACTERIZED by the fact that the cooling fluid is returned to the cooling elements (102, 104) after passing through the mandrel bar tip (800).
[0006]
6. Method according to claim 4 or 5, CHARACTERIZED by the fact that the end of the mandrel bar (800) is positioned inside the rotating die (160) before receiving the first billet.
[0007]
7. Method according to any of claims 2 to 6, CHARACTERIZED by the fact that the cooling fluid is water.
[0008]
8. Method according to any one of claims 1 to 7, CHARACTERIZED by the fact that it continuously carries the plurality of billets (30, 702) which further comprises: the gripping elements (106, 108) alternately holding the mandrel bar (100, 340, 540) to allow one or more billets to pass through the seizure elements (106, 108).
[0009]
9. Method according to claim 8, CHARACTERIZED by the fact that the downstream gripper element (108) holds the chuck bar (100, 340, 540) and an upstream gripper element (106) is open.
[0010]
10. Method, according to claim 9, CHARACTERIZED by the fact that it additionally comprises: loading one or more billets in the mandrel bar (100, 340, 540) and passing the upstream seizure element (106) open; closing the open upstream seizure element (106); and advancing one or more billets to the downstream seizure element (108).
[0011]
11. Method, according to claim 10, CHARACTERIZED by the fact that it additionally comprises: opening the seizure element downstream (108); advance one or more billets past the seizure element downstream (108) open; and closing the seizure element downstream (108).
[0012]
12. Method according to any one of claims 1 to 11, CHARACTERIZED by the fact that it continuously carries the plurality of billets (30, 702) which further comprises: the cooling elements (102, 104) alternately fixing the mandrel bar (100, 340, 540) to allow one or more billets to pass through the cooling elements (102, 104).
[0013]
13. Method according to claim 12, CHARACTERIZED by the fact that the downstream cooling element (104) holds the chuck bar (100, 340, 540) and delivers the cooling fluid to the chuck bar (100, 340, 540), and an upstream cooling element (102) is opened.
[0014]
14. Method, according to claim 13, CHARACTERIZED by the fact that it additionally comprises: loading one or more billets on the mandrel bar (100, 340, 540) and passing the open upstream cooling element (102); closing the cooling seizure element (102) open; and advancing one or more billets to the downstream cooling element (104).
[0015]
15. Method, according to claim 14, CHARACTERIZED by the fact that it additionally comprises: opening the cooling element downstream (104); advance one or more billets past the open downstream cooling element (104); and closing the downstream cooling element (104).
[0016]
16. Method according to any one of claims 1 to 15, CHARACTERIZED by the fact that it further comprises: during extrusion, preventing the rotation of a part of the first billet that has not yet entered the rotating die (160).
[0017]
17. Method, according to claim 16, CHARACTERIZED by the fact that a centering insert (152) holds the part of the first billet to prevent rotation of said part, and in which the centering insert (152) has a position adjustable in relation to the rotating die (160).
[0018]
18. Method according to claim 17, CHARACTERIZED by the fact that it additionally comprises cooling the centering insert (152) with a cooling fluid.
[0019]
19. Method according to any one of claims 1 to 18, CHARACTERIZED by the fact that the rotating die (160) heats the billet as the billet advances through the rotating die (160).
[0020]
20. Method according to any one of claims 1 to 19, CHARACTERIZED in that it further comprises providing a constant compressive force against the first billet towards the rotating die (160).
[0021]
21. Method according to any one of claims 1 to 20, CHARACTERIZED in that it further comprises cooling the extruded material when the extruded material leaves the rotating die (160).
[0022]
22. Method according to claim 21, CHARACTERIZED by the fact that the extruded material is cooled using water.
[0023]
23. Method, according to claim 22, CHARACTERIZED by the fact that water comes in contact with the extruded material within 2.54 cm (1 inch) of the rotating die (160).
[0024]
24. Method according to any one of claims 1 to 23, characterized by the fact that the rotating die (160) comprises a plurality of stacked die plates.
[0025]
25. Method according to any one of claims 1 to 24, CHARACTERIZED by the fact that the material is copper.
[0026]
26. Method according to any one of claims 1 to 24, CHARACTERIZED by the fact that the material is selected from the group consisting of aluminum, nickel, titanium, brass, steel and plastic.
[0027]
27. Method according to any one of claims 1 to 26, characterized by the fact that it further comprises adjusting the rotation speed of the rotating die (160).
[0028]
28. Method according to any one of claims 1 to 27, CHARACTERIZED by the fact that the plurality of billets (30, 702) extends along the entire length of the mandrel bar (100, 340, 540).
[0029]
29. Method according to any one of claims 1 to 28, CHARACTERIZED by the fact that it additionally comprises flooding the interior of the extruded material with nitrogen.
[0030]
30. Method according to any one of claims 1 to 29, CHARACTERIZED by the fact that each of the plurality of billets (30, 702) is loaded on the mandrel bar (100, 340, 540) by a human or a automated loading device.
[0031]
31. Method for continuously loading and extruding a plurality of billets (30, 702), the method CHARACTERIZED by the fact that it comprises: receiving a first billet at a receiving end of an elongated mandrel bar (100, 340, 540), the first billet having a hole through it; transport the first billet along the mandrel bar (100, 340, 540) and through the cooling elements (102, 104) that hold the mandrel bar (100, 340, 540) and deliver cooling fluid to the mandrel bar (100, 340, 540), in which at any given time, at least one cooling element is secured to the mandrel bar (100, 340, 540); and extruding the first billet to form an extruded material by pressing the first billet through a rotating die (160), wherein the first billet is followed by a second adjacent billet that forms a part of the extruded material, the second billet having a hole through his.
[0032]
32. Method according to claim 31, CHARACTERIZED by the fact that the first billet is transported along the mandrel bar (100, 340, 540) via a track (202) that intermittently moves depending on the position of the first billet in relation to the cooling elements (102, 104).
[0033]
33. Method according to claim 31 or 32, CHARACTERIZED by the fact that the cooling fluid is transported to a mandrel bar tip (800) provided at a second end of the mandrel bar (100, 340, 540) opposite the receiving end.
[0034]
34. Method according to claim 33, CHARACTERIZED by the fact that the cooling fluid is returned to the cooling elements (102, 104) after passing through the end of the mandrel bar (800).
[0035]
35. Method according to claim 33 or 34, CHARACTERIZED by the fact that the end of the mandrel bar (800) is positioned within the rotating die (160) before receiving the first billet.
[0036]
36. Method according to any one of claims 31 to 35, CHARACTERIZED by the fact that the cooling fluid is water.
[0037]
37. Extrusion press system (10), CHARACTERIZED by the fact that it comprises: a mandrel bar (100, 340, 540) having a first end and a second end, the first end to receive a billet (30, 702) having a hole through it and the second end coupled to an end of the mandrel bar (800); a cooling element (102, 104) coupled to the mandrel bar (100, 340, 540), the cooling element having a port (320) through which the cooling fluid is delivered inside the mandrel bar (100, 340, 540) to cool the end of the mandrel bar (800); a gripping element (106) coupled to the mandrel bar (100, 340, 540), the gripping element (106) comprising movable claws to hold in place and prevent rotation of the mandrel bar (100, 340, 540); and a rotating extrusion die (160) configured to receive the billet from a centering insert (152) having a plurality of notches (346) that frictionally engage the billet to prevent the billet from rotating before the billet enters the rotating extrusion die (160); transport means (110, 202) for transporting the billet along the mandrel bar (100, 340, 540) and through the gripping elements (106, 108); wherein the end of the mandrel bar (800) is positioned within the rotating die (160).
[0038]
38. Extrusion press system according to claim 37, CHARACTERIZED by the fact that it further comprises: a press piston element (130, 140) having first and second movable arms that together hold the billet and provide a force of constant compression in the direction of the rotating die (160).
[0039]
39. Extrusion press system according to claim 38, CHARACTERIZED by the fact that the constant compression force causes the billet to enter the rotating die (160) at a predetermined rate.
[0040]
40. Extrusion press system according to any one of claims 37 to 39, CHARACTERIZED by the fact that the mandrel bar (100, 340, 540) comprises an opening close to the cooling element doors (320), the which opening receives the cooling fluid.
[0041]
41. Extrusion press system according to claim 40, CHARACTERIZED by the fact that the mandrel bar (100, 340, 540) additionally comprises notches (346) around the mandrel bar (100, 340, 540) on either side of the opening, where the notches (346) are configured to receive an O-ring to prevent the coolant from leaking.
[0042]
42. Extrusion press system according to claim 41, CHARACTERIZED by the fact that it additionally comprises a mandrel bar sleeve (360) around the opening that prevents the cooling fluid from leaking.
[0043]
43. Extrusion press system according to any one of claims 37 to 42, CHARACTERIZED by the fact that the mandrel bar (100, 340, 540) comprises an inner tube (350) in which it receives the cooling fluid from the cooling element (102, 104) and through which the cooling fluid is delivered to the end of the mandrel bar (800).
[0044]
44. Extrusion press system according to claim 43, CHARACTERIZED by the fact that the cooling fluid is returned to the cooling element (102, 104) from the end of the mandrel bar (800) along a space within the mandrel bar (100, 340, 540) between the outer surface of the inner tube (350) and the inner surface of the mandrel bar (100, 340, 540).
[0045]
45. Extrusion press system according to any one of claims 37 to 44, CHARACTERIZED by the fact that the cooling fluid is water.
[0046]
46. Extrusion press system according to any one of claims 37 to 45, CHARACTERIZED by the fact that the mandrel bar (100, 340, 540) comprises a gripping part (518) that is correspondingly formed to fit with the gripper of the gripping element (106, 108).
[0047]
47. Extrusion press system according to any one of claims 37 to 46, CHARACTERIZED by the fact that it additionally comprises a rail (202) along which the billet is transported, in which the rail (202) intermittently moves depending on the position of the billet in relation to the seizure elements (106, 108) and the cooling elements (102, 104).
[0048]
48. Extrusion press system according to claim 47, CHARACTERIZED by the fact that it additionally comprises upper rolling wheels located above the rail (202) and configured to come into contact with an upper surface of the billet.
[0049]
49. Extrusion press system according to any one of claims 37 to 48, CHARACTERIZED in that it additionally comprises a cooling pipe (180) provided at an outlet of the rotating extrusion die (160).
[0050]
50. Extrusion press system according to claim 49, CHARACTERIZED by the fact that the cooling tube (180) cools the extruded material when the extruded material leaves the rotating extrusion die (160).
[0051]
51. Extrusion press system according to claim 50, CHARACTERIZED by the fact that the extruded material is cooled using water.
[0052]
52. Extrusion press system according to claim 51, CHARACTERIZED by the fact that water comes in contact with the extruded material within 2.54 cm (1 inch) of the rotating extrusion die (160).
[0053]
53. Extrusion press system according to any of claims 37 to 52, CHARACTERIZED by the fact that it additionally comprises a motor (170) coupled to a spindle (172) that controls the rotation speed of the rotating extrusion die ( 160).

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法律状态:
2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-03-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-09-15| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-10-20| B25G| Requested change of headquarter approved|Owner name: MANCHESTER COPPER PRODUCTS, LLC (US) |

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2020-11-10| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 11/10/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US13/650,977|US9346089B2|2012-10-12|2012-10-12|Extrusion press systems and methods|

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US13/650.977|2012-10-12|

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PCT/US2013/064558|WO2014059285A1|2012-10-12|2013-10-11|Extrusion press systems and methods|

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