• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a machine for welding in situ saddle fittings for fusion, the particularity of which consists in the fact that it comprises a base which extends mainly in a first direction, at least a vice movable along said base in the first direction, clamping means for removably fastening the machine to a pipeline arranged transversely to the first direction, and removable hooking means of the base to the clamping means.
    公开号:CH713100A2
    申请号:CH01212/17
    申请日:2017-10-03
    公开日:2018-04-30
    发明作者:Bortoli Renzo
    申请人:Ritmo Spa；
    IPC主号:
    专利说明:

    Description [0001] The present invention relates to a machine for welding in situ saddle fittings for fusion.
    [0002] It is known in the field of fluid conveying systems, such as water, gas or the like, made with thermoplastic pipes, to use saddle fittings to obtain derivations from a main pipe in a practical and reliable manner.
    [0003] The installation of a saddle fitting by fusion welding requires first of all to drill the wall of the pipe on which the fitting is to be inserted with a suitable size cutter.
    [0004] Subsequently, the parts to be welded are heated by means of a poly-fuser unit and when the latter have reached the ideal temperature, the saddle fitting is welded to the pipe, inserting it into the opening previously made and exerting adequate pressure between the parts.
    [0005] Although the installation of these saddle fittings appears to be relatively simple, it is actually rather delicate, and requires a particular skill from the operators to perform the hole correctly and to search for the correct relative position of the components to be welded.
    [0006] It is essential that the hole be centered with respect to the axis of the main pipe and that it is also perpendicular to this axis.
    [0007] Furthermore, care must also be taken to ensure that the pieces to be welded are kept perfectly aligned with each other for a sufficient time to determine their final union.
    [0008] This situation, which is already difficult in itself, becomes even more complicated if the aforementioned saddle fittings are to be installed on site, perhaps working in narrow spaces.
    [0009] Consider in this regard that in the shipbuilding sector, all the operations necessary for the installation of saddle fittings by fusion welding are currently performed manually by the operators, entrusting the quality of the final result exclusively to their ability.
    [0010] The aim of the invention is therefore to provide a machine for welding in situ saddle fittings for polyfusion which can relieve, at least partially, the operators of the tasks described above.
    [0011] Within the scope of the aim set out above, a particular object of the invention is to provide a machine which allows perfect alignment and perfect perpendicularity to be obtained both during drilling of the main pipe and during insertion and welding of the saddle fitting.
    [0012] Another object of the invention is to provide a machine which allows to operate on a main pipeline without ever changing or modifying the axis on which one is working.
    [0013] Another object of the invention is to provide a machine that is light, comfortable and easy to handle, so that it can be used even by a single operator.
    [0014] Another object of the invention is to provide a machine which is robust, compact and safe for the operator.
    [0015] The aforementioned task, as well as the objects mentioned and others which will become more apparent hereinafter, are achieved by a machine for welding in situ saddle fittings for polyfusion, characterized in that it comprises a base developing in a first direction, at least one clamp movable along said base in said first direction, clamping means for removably fastening said machine to a pipeline arranged transversely to said first direction, and removable means for hooking said base to said clamping means.
    [0016] Further characteristics and advantages will become better apparent from the description of a preferred but not exclusive embodiment of a machine for welding in situ saddle fittings for polyfusion according to the invention, illustrated only by way of non-limitative example in the United States drawings in which: fig. 1 is a perspective view of the machine according to the invention; fig. 2 is another perspective view of the machine according to the invention; fig. 3 is another perspective view of the machine according to the invention; fig. 4 is a perspective view of the machine according to the invention during a use step; fig. 5 is a perspective view of the machine according to the invention during another use phase; fig. 6 is a perspective view of the machine according to the invention during another use phase; fig. 7 is a perspective view of the machine according to the invention after the installation of a saddle fitting on a pipe.
    [0017] With reference to the above figures, a machine for welding in situ saddle fittings for fusion, according to the invention, is indicated as a whole with the reference number 1.
    [0018] The machine 1 comprises a base 2 of elongated shape, which extends mainly in a first direction 100.
    [0019] A first sliding guide 3 is also arranged on the base 2, also developing in the first direction 100.
    [0020] A carriage 4 is associated with the first sliding guide 3, which carries a vice 5 which is movable along the base 2 in the first direction 100.
    [0021] Advantageously, first movement means 6 of the carriage 4 are mounted on the base 2, which allows the latter to be moved along the first sliding guide 3 under the control of an operator who operates the machine 1.
    [0022] In greater detail, these first moving means 6 consist essentially of a first worm screw 7 coupled with a corresponding first nut 8 formed on the carriage 4.
    [0023] The first worm 7 is arranged with its axis of rotation substantially parallel to the first direction 100 and has an end portion 9 which allows the operator to rotate it by means of an electric tool (drill, screwdriver, etc.) , or through a manual crank suitable for the purpose.
    [0024] The vice 5 comprises a pair of jaws 10, opposed, which are relatively movable between them by translation along a second direction 200 substantially orthogonal to the first direction 100.
    [0025] Each jaw 10 has for this purpose a base portion 11 slidably associated with a second sliding guide 12 arranged on the carriage 4 and extending in the second direction 200.
    [0026] The jaws 10 also have respective locking portions 13 which define abutment profiles 14 substantially shaped as V.
    [0027] Advantageously, second moving means 15 are mounted on the carriage 4, which allow the jaws 10 to be moved along the second sliding guide 12 under the control of the operator.
    [0028] In particular, these second movement means 15 consist essentially of a second worm screw 16, with a right-hand end and the other left-hand one, coupled with corresponding second nut screws 17 formed on the base portions 11 of the jaws 10.
    [0029] The second worm screw 16 is arranged with its axis of rotation substantially parallel to the second direction 200 and is operable in rotation by the operator by means of a handwheel 18.
    [0030] Advantageously, the handwheel 18 can be connected indifferently to one or the other end of the second worm screw 16, choosing the side of the base 2 which is more comfortable in terms of maneuvering space.
    [0031] The machine 1 further comprises clamping means 19 which enable it to be secured in a stable but removable manner to a pipe 50 arranged transversely to the first direction 100.
    [0032] These clamping means 19 are essentially constituted by a support 20 to which a pair of brackets 21 connected with holding means 22 of the pipe 50 are constrained.
    [0033] Suitably, each bracket 21 defines a substantially V-shaped profile 23
    [0034] In this case, the retaining means 22 can be constituted by ratchet-type belts, such as those shown in the figures, or by other systems capable of closing the loop surrounding the pipe 50 by an adjustable progressive tightening.
    [0035] Advantageously, the clamping means 19 also comprise a holding element 24 formed by two mutually perpendicular arms which give it a substantially L-shaped conformation.
    [0036] This holding element 24 is mounted movable on the support 20 and is designed so as to temporarily hook the clamping means 19, and therefore the machine 1, to the pipe 50 as long as the retaining means 22 are not made operational.
    [0037] In particular, the longer arm of the grip element 24 is slidably associated with the support 20 and its stroke can be blocked thanks to an interference blocking system 25, already known per se.
    [0038] According to a further advantageous aspect of the present invention, the clamping means 19 are associated with the base 2 in a removable manner.
    [0039] The machine 1 in fact comprises suitable removable hooking means 26 which allow, depending on the specific needs, to separate the clamping means 19 from the base 2 or to jointly fasten these two elements.
    [0040] For this last purpose, the base 2 is provided at one end with a hook portion 27 which can be engaged by interlocking, by means of a sliding movement according to the first direction 100, with a corresponding edge 28 formed on the support 20.
    [0041] Conveniently, the removable fastening means 26 comprise a snap-in coupling device which allows the base 2 to be automatically fixed to the support 20, so as to ensure the safety of the operator by avoiding unwanted separations of these two elements.
    [0042] This snap-coupling device can comprise, for example, a tooth 29 pushed by a spring, not shown in the figures, cooperating with a hollow, also not shown in the figures, defined on the base 2.
    [0043] The tooth 29 is movable relative to the support 20 and can slide axially in a direction transverse to the first direction 100.
    [0044] Advantageously, the tooth 29 has at one end a gripping knob 30 which allows the snap-coupling device to be released.
    [0045] The removable coupling means 26 further comprise a handwheel 31 suitable for firmly restraining the base 2 to the support 20 eliminating any mechanical play in the coupling between the two elements.
    [0046] The use of this machine is described below.
    [0047] To begin with, it is necessary to locate in the pipe 50 the point where the derivation is to be obtained.
    [0048] Once the precise point has been located, it is convenient to separate the base 2 from the support 20 and fix only the mounting means 19 to the pipe 50.
    [0049] Thanks to the division into two parts of the machine 1, the operator can in fact manage the weights in play more easily and with greater safety.
    [0050] In order to fix the clamping means 19 to the tubing 50, the holding element 24 is first used.
    [0051] In greater detail, the shorter arm of the support element 24 is made to pass behind the pipe 50 and subsequently its longer arm is made to slide relatively to the support 20 as long as the pipe 50 does not rest on the ledge profile 23 of the brackets 21.
    [0052] Conveniently, the interference locking system 25 automatically blocks the sliding in the opposite direction of the grip element 24.
    [0053] In this way the clamping means 19 remain suspended from the pipe 50 allowing the operator to make the restraining means 22 operate in complete safety.
    [0054] From a practical point of view, the actuation of the restraining means 22 translates into passing the straps around the tubing 50 in such a way as to form a loop which embraces it, and in progressively tightening such handles through the ratchets .
    [0055] Once the retention means 21 are tightened, the clamping means 19 can no longer rotate or slide along the pipe 50.
    [0056] The base 2 can now be hooked to the clamping means 19 already previously fixed to the pipe 50.
    [0057] In greater detail, by means of a sliding movement according to the first direction 100, the hook portion 27 of the base 2 is inserted with the edge 28 formed on the support 20.
    [0058] When the base 2 and the support 20 are correctly positioned with respect to each other, the tooth 29 pushed by the spring snaps into engagement with the corresponding recess defined on the base 2.
    [0059] In this way the automatic coupling of the base 2 to the support 20 is obtained, which therefore become one piece.
    [0060] This guarantees, once again, to put the operator in a safety situation because the base 2 and all the components of the machine 1 associated with it can no longer accidentally unhook and slide over it.
    [0061] In order to guarantee the cancellation of any mechanical play between the base 2 and the support 20, it is sufficient to fix the handwheel 31 which is located near the grip knob 30.
    [0062] Before or after this operation, between the locking portions 13 of the jaws 10, a first electric tool 60 equipped with a hole cutter 61 was adhered to.
    [0063] At this point it is possible to proceed with the drilling of the pipe 50, as illustrated in the annexed fig. 4.
    [0064] For this purpose the first electric tool 60 is started, preferably by locking the switch in the on position, and through a second electric tool 70 (drill, screwdriver, etc.) connected to the end portion 9 of the first worm 7 is made advancing the first electric tool 60, according to the first direction 100, until the pipe 50 is pierced.
    [0065] When the hole cutter 61 has dug over the entire surface and entered the pipe 50, as seen in fig. 5, the direction of travel of the second electric tool 70 is inverted until it is possible to remove the first electric tool 60 from the vice 5.
    权利要求:
    Claims (16)
    [1]
    [0066] Once the first electric tool 60 has been turned off, the operator can take it, open the jaws 10 and remove it from the machine 1. [0067] A connector 90 is then positioned between the locking portions 13 of the jaws 10, tightening it between the profiles of stop 14 and making sure that the concentricity between the pipe 50 and the connection 90 is as precise as possible. [0068] At this point a poly-fuser 80 is inserted between the pipe 50 and the fitting 90, on and in temperature, as shown in fig. 6, and the carriage 4 is advanced, by means of the second electric tool 70, until the radiused surfaces of the bushes 81 are not in contact with those of the pipe 50 and of the connector 90. [0069] When the surfaces in contact with the bushes 81 have reached the ideal temperature, the carriage 4 is made to retract, by means of the second electric tool 70, and the poly-fuser 80 is removed. [0070] Once the poly-fuser 80 has been removed, it is necessary to proceed in the shortest possible time to weld the fitting 90 to 50 tubing; to do this, the direction of rotation of the second electric tool 70 must be reversed again by advancing the carriage 4 until the fitting 90 is completely inserted in the pipe 50. [0071] Once it has been ascertained that the welding operation has been carried out correctly, it is possible to proceed with the opening of the jaws 10. [0072] To remove the machine 1 from the pipe 50, it is first of all necessary to detach the second electric tool 70 from the end portion 9 of the first worm 7. [0073] Then, after loosening the handwheel 31 and raised the grip knob 30 so as to disengage the tooth 29 from the recess defined on the base 2, it will be possible to release the latter from the support 20. [0074] The removal of the machine 1 from the pipe 50 is completed by loosening the means retention 22 and disabling the interference locking system 25, so as to slide the support element 24 so as to allow it to release of the clamping means 19 from the pipe 50, as shown in fig. 7. [0075] In practice it has been found that the machine for welding in situ saddle fittings for fusion, according to the invention, fully achieves the intended aim, since it allows to obtain a perfect alignment and a perfect perpendicularity, first in the drilling of the pipe, and then welding and inserting the fitting into the pipe itself, without ever changing or modifying the axis on which you are working. [0076] This makes it possible to obtain precision drilling of superior quality, weldings in line with the center of the tube, and insertions of the fitting without burrs or misalignments. [0077] Moreover, thanks to the motorized advancement before the cutter and then the fitting, the effort and the possibility of error on the part of the operator are reduced to a minimum. [0078] Another important feature of the machine according to the invention consists in that it is in fact divided into two parts, although these parts can be joined together. [0079] This leads to better and easier weight management and also allows a single operator to use the machine according to the invention in the installation of saddle fittings. [0080] The machine for welding in situ saddle fittings for polyfusion, thus conceived, is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept; moreover, all the details may be replaced by other technically equivalent elements. [0081] In practice, the materials used, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may vary according to requirements and to the state of the art. Claims 1. 1. A machine for welding on-site polyfusion saddle fittings, characterized in that it comprises a base extending in a first direction, at least one vice movable along said base in said first direction, clamping means for removably fastening said machine to a pipeline arranged transversely to said first direction, and removable means for hooking said base to said clamping means.
    [2]
    2. Machine, according to the previous claim, characterized in that said base comprises a first sliding guide extending in said first direction and a carriage carrying said vice; said carriage being slidably associated with said first sliding guide.
    [3]
    3. The machine according to one or more of the preceding claims, characterized in that said base comprises first movement means adapted to displace said carriage along said first sliding guide under the control of an operator who operates said machine.
    [4]
    4. The machine according to one or more of the preceding claims, characterized in that said first movement means comprise at least a first worm screw associated with said base and arranged with the axis of rotation substantially parallel to said first direction; said first worm being coupled with a corresponding first nut made on said carriage; said first worm being rotatable by said operator.
    [5]
    5. The machine according to one or more of the preceding claims, characterized in that said vice comprises a pair of opposite jaws; said jaws being relatively movable with one another by translation along a second direction substantially orthogonal to said first direction.
    [6]
    6. The machine according to one or more of the preceding claims, characterized in that said carriage comprises a second sliding guide extending in said second direction; said jaws comprising respective base portions slidably associated with said second sliding guide.
    [7]
    7. The machine according to one or more of the preceding claims, characterized in that said jaws comprise respective locking portions; each locking portion defining a substantially V-shaped abutment profile.
    [8]
    8. The machine according to one or more of the preceding claims, characterized in that said carriage comprises second movement means adapted to move said jaws along said second sliding guide under the control of an operator who operates said machine.
    [9]
    9. The machine according to one or more of the preceding claims, characterized in that said second movement means comprise at least one second worm screw associated with said carriage and arranged with the axis of rotation substantially parallel to said second direction; said second worm being coupled with a pair of corresponding second nut screws formed respectively on said base portions of said jaws; said second worm screw being rotatable by said operator.
    [10]
    10. The machine according to one or more of the preceding claims, characterized in that said moving means of said jaws comprise a handwheel which can be connected to the ends of said second worm screw, to be chosen from the side of one of the two sides of said base.
    [11]
    11. The machine according to one or more of the preceding claims, characterized in that said clamping means comprise a support removably hooked to said base; said support carrying at least one pair of brackets provided with means for retaining said tubing; each bracket defining a substantially V-shaped abutment profile.
    [12]
    12. The machine according to one or more of the preceding claims, characterized in that said retention means essentially consist of ratchet-type belts designed to close the loop that surrounds said pipe by an adjustable progressive tightening.
    [13]
    13. The machine according to one or more of the preceding claims, characterized in that said clamping means comprise at least one substantially L-shaped grip element; said handhold being mounted movably on said support to temporarily hook said clamping means to said tubing; said holding element being lockable by means of an interference locking system.
    [14]
    14. Machine according to one or more of the preceding claims, characterized in that said removable coupling means of said base to said clamping means comprise a snap-in coupling device for automatically fixing said base to said support; said base being provided at one end of it with a hook-like portion engageable by interlocking with a corresponding edge formed on said support.
    [15]
    15. The machine according to one or more of the preceding claims, characterized in that said snap-coupling device comprises a cooperating snap-in recess with a tooth pushed by a spring; said recess being defined on said base; said tooth being movable relative to said support in a direction transverse to said first direction.
    [16]
    16. The machine according to one or more of the preceding claims, characterized in that said removable coupling means of said base to said clamping means comprise a locking handwheel for securely fastening said base to said support; said handwheel being associated with said support.
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    同族专利:
    公开号 | 公开日
    IT201600104112A1|2018-04-18|
    US20180104907A1|2018-04-19|
    DE102017124257A1|2018-04-19|
    CA2981266A1|2018-04-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3723229A|1970-05-01|1973-03-27|W Hutton|Fusion tool|
    US3743566A|1970-09-24|1973-07-03|Phillips Petroleum Co|Apparatus for joining a plastic fitting to a plastic pipe|
    US3966528A|1974-08-14|1976-06-29|Joe William Christie|Apparatus and method for joining a branching fitting to a pipe|
    CA1190728A|1982-02-01|1985-07-23|Bent J. Hansen|Clamping apparatus for plastic pipe|
    US4556207A|1982-02-01|1985-12-03|Cliffside Pipelayers|Clamping apparatus for plastic pipe|
    US4533424A|1984-01-13|1985-08-06|Mcelroy Manufacturing, Inc.|Pipe fusion apparatus with load cell for attaching side wall fittings|
    US5505811A|1994-06-13|1996-04-09|Tdw Delaware, Inc.|Sidewall applicator for heat fusion of a fitting to a plastic pipe|
    IT1306729B1|1999-10-22|2001-10-02|Giovanni Meirana|MULTI-FUNCTIONAL PRESS FOR THE WELDING OF PLASTIC PIPES AND FITTINGS, IN PARTICULAR IN PE POLYETHYLENE, POLYPROPYLENE|
    US8857488B2|2011-11-03|2014-10-14|Hdpe Solutions, Llc|Pipe fitting installation device|CN109014671A|2018-07-26|2018-12-18|无为县红宇通信器材有限责任公司|A kind of concrete wire pole inside steel bar meter welding equipment|
    CN109396716B|2018-11-01|2019-09-24|覃丽娟|The fixed device of automobile U-shaped shaft coupling butt welding processing|
    CN112140568A|2020-09-09|2020-12-29|渤海造船厂集团有限公司|Automatic thick rubber plate application device and method|
    法律状态:
    2020-11-13| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    IT102016000104112A|IT201600104112A1|2016-10-18|2016-10-18|MACHINE FOR WELDING IN WORK OF SADDLE FITTINGS FOR POLYFUSION.|
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