• 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 invention relates to a back stop unit (29) for a production system (1) for bending sheet metal and comprises a base frame (35) with a bearing arrangement (38) and a stop finger (30) with at least one first stop element (31) with a first stop face (30). 32) and at least one second stop element (36) with a second stop surface (37). The stop finger (30) is pivotable about a pivot axis (39) defined by the bearing arrangement (38) from a first stop position into a second stop position. In the first stop position, a first end region (33) and the first stop surface (32) of the stop finger (30) can be turned towards the workpiece (2) to be produced. A second end region (34) of the stop finger (30) is pivotally mounted on the base frame (35) by means of the bearing arrangement (38). In the second stop position, the second stop surface (37) can be turned towards the workpiece (2) to be produced. The invention also relates to a production plant (1) equipped with such a backgauge unit (29).
    公开号:AT519644A4
    申请号:T50554/2017
    申请日:2017-07-05
    公开日:2018-09-15
    发明作者:
    申请人:Trumpf Maschinen Austria Gmbh & Co Kg；
    IPC主号:
    专利说明:

    Summary
    The invention relates to a rear stop unit (29) for a production system (1) for bending sheet metal and comprises a base frame (35) with a bearing arrangement (38) and a stop finger (30) with at least one first stop element (31) with a first stop surface ( 32) and at least one second stop element (36) with a second stop surface (37). The stop finger (30) can be pivoted about a pivot axis (39) defined by the bearing arrangement (38) from a first stop position into a second stop position. In the first stop position, a first end region (33) and the first stop surface (32) of the stop finger (30) can be turned towards the workpiece (2) to be manufactured. A second end region (34) of the stop finger (30) is pivotably mounted on the base frame (35) by means of the bearing arrangement (38). In the second stop position, the second stop surface (37) can be turned towards the workpiece (2) to be manufactured. The invention also relates to a production system (1) equipped with such a backgauge unit (29).
    Fig. 2
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    The invention relates to a backgauge unit for a production system for free bending or embossing a workpiece to be manufactured from a sheet metal, and to a production system equipped with such a backgauge unit.
    From CH 668 035 A5 a manufacturing system for bending workpieces to be made from sheet metal with a bending press is known, in which tool holders for a bending tool with at least one bending die and at least one bending die are arranged on the press beam. On the side of the press beam facing away from an operating side, a tool store is arranged behind the upper press beam. The bending tools to be stored are also arranged one behind the other in the direction of the depth of the machine frame in a hanging arrangement at the tool storage locations provided for this purpose. Furthermore, the production system includes a backgauge unit with a stop element, which serves to position the sheet to be machined on the side of the press beam facing away from the operating side. The backgauge unit further comprises an actuating or moving device with which the backgauge unit and, in connection therewith, the stop element can be moved according to the desired bending position for the sheet metal. Support arms are also pivotally mounted on the stop element about a horizontal axis. At the ends of the support arms are each holding bolts, which can be inserted into recesses in the respective bending tool. A further embodiment provides an arm which projects vertically above the stop element and from which a driver pin projects for manipulation of the bending tool in the direction of the press beam. The disadvantage here is that only a limited stop area is available.
    28.2
    N2017 / 11300 AT-l-
    From WO 2012/151601 A1, a manufacturing system for the bending of workpieces to be made from a sheet metal with a tool changing system has become known. The production system comprises a bending press with a machine frame and press beam as well as tool holders for a bending tool arranged on the press beam. Furthermore, a tool store, a backgauge unit with a stop element and a manipulation device for moving the bending tool between the tool store and the tool holders are provided. The stop element and the manipulation device are arranged on a common support opposite one another and in an opposite orientation and rotatably mounted about a vertical pivot axis. The carrier can be pivoted from a first position, in which the stop element faces the bending tool held in the tool holders, into a second position, in which the manipulation device faces the bending tool held in the tool holders. The disadvantage here is that the free space behind the base frame of the backgauge unit within the machine frame could not be used for the machining of larger workpieces.
    The object of the present invention was to overcome the disadvantages of the prior art and to provide a backgauge unit and a production facility equipped therewith, by means of which a user is able to better and more optimally use the space available behind the bending tool to use larger bent parts without having to use a lot of machinery.
    This object is achieved by a backgauge unit and a production system equipped therewith in accordance with the claims.
    The backgauge unit according to the invention is intended for use in a production system which is used in particular for free bending or embossing a workpiece to be produced from a sheet metal, the backgauge unit comprising at least the following components and / or component components:
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    3/28 a stop finger with at least one first stop element arranged or formed thereon with a first stop surface, the stop finger having a longitudinal extension with a first end region and a second end region spaced apart therefrom, a base frame on which base frame the stop finger is arranged, wherein in a first stop position of the stop finger, its first end region and the first stop surface of the at least one first stop element can be turned towards the workpiece to be manufactured, the stop finger further comprising at least one second stop element with a second stop surface, a bearing arrangement is provided, which bearing arrangement is arranged in a horizontal direction and In the normal direction with respect to the longitudinal extent of the stop finger oriented pivot axis is defined and arranged on the base frame, the stop finger with its second end region by means of the bearing arrangement tion is pivotally mounted on the base frame, the stop finger can be pivoted from its first stop position into a second stop position about the pivot axis of the bearing arrangement, and in the second stop position the second stop surface of the at least one second stop element can be turned towards the workpiece to be manufactured.
    The advantage achieved thereby is that by providing a single stop finger and forming or arranging a plurality of stop elements thereon, a multiplicity of different stop positions can be created for the sheet metal or the workpiece to be positioned thereon. Furthermore, due to the two stop positions of the stop finger projecting in the opposite direction due to the pivotable bearing arrangement, the longitudinal extension of the stop finger can be fully utilized in each case after the selected stop position. If the stop finger is in its first stop position, in which it projects in the direction of the bending tool, a stop limitation close to the tool can be achieved. If, however, the stop finger is in its second stop position, it has one with respect
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    4/28 the first stop position to the opposite orientation. As a result, the space located behind the bearing arrangement within the machine frame can also be used to hold the sheet to be machined. Thus, a further stop element removed from the bending tool and the bending line formed by this can be created in a simple manner with the same stop finger. The provision of the bearing arrangement thus makes it possible in a simple manner to shift the stop finger from a position facing the bending tool (first stop position) to a position facing away from it (second stop position). A stop extension of the rear stop unit can thus be created. This additionally created stop depth can increase the stop area and thus the length of the leg lengths of the sheet to be bent by up to 30% and more.
    Furthermore, it can be advantageous if a swivel angle of the stop finger between its first stop position and its second stop position is 180 °. As a result, stop positions of the stop finger arranged exactly opposite one another can be created.
    Another embodiment is characterized in that the stop finger has a parallel orientation with respect to a horizontal plane in both stop positions. Due to the horizontal alignment of the stop finger in both stop positions, an additional contact surface and support for the sheet or workpiece to be positioned thereon can also be created.
    A further possible embodiment has the features that the first stop surface of the at least one first stop element is formed by an end surface of the stop finger. In this way, when the stop finger is in the first stop position, a stop surface close to the tool for the sheet to be positioned can be created.
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    A further embodiment provides that further first stop surfaces of further first stop elements are arranged on an upper side of the stop finger when the stop finger is in the first stop position. Due to the multiple arrangement of several first stop surfaces, when selecting and positioning the required stop surface in the vertical direction (“Y” direction), a rough preselection can be made for one of these stop surfaces and additional fine positioning by shifting the stop finger in “X” - Direction.
    Another embodiment is characterized in that the second stop surface of the at least one second stop element is arranged on an underside of the stop finger when the stop finger is in the first stop position. This makes it possible for there to be no additional stop surfaces when the stop finger is in the first stop position, which can have a disruptive effect when the sheet metal is arranged and positioned. By providing and arranging the at least one second stop element on the underside of the stop finger, this can only be activated after the stop finger has been folded over and swung into its second stop position. In this second stop position, the side of the stop finger which previously formed the underside is then arranged on the top side of the stop finger.
    A further preferred embodiment is characterized in that the second stop surface of the at least one second stop element is arranged or formed in a longitudinal section of the first end region of the stop finger. This creates the possibility of arranging or forming the second stop surface as far as possible from the bearing arrangement. Thus, when the stop finger is in the second stop position, the second stop surface can be arranged at a sufficiently large distance from the bearing arrangement and thus also from the bending tool.
    Furthermore, it can be advantageous if a first stop element and a second stop element arranged opposite it are formed by a crank formed in the stop finger. By training and providing
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    6/28 of a crank to form oppositely arranged first and second stop elements, a stepped and Z-shaped configuration of the stop finger can be created as seen in the longitudinal cross section. This makes it possible in a simple manner to be able to form a first and a second stop element both on the top and on the bottom of the stop finger.
    Another alternative embodiment is characterized in that the stop finger is supported in at least one of its stop positions on the base frame or the bearing arrangement. Positioning of the stop finger in at least one of its stop positions can thus easily be created.
    Another possible and possibly alternative embodiment has the features that the stop finger is supported in at least one of its stop positions via a spring element on the base frame or the bearing arrangement. A mechanically hard support of the stop finger in at least one of its positions on the base frame or the bearing arrangement can thus be avoided.
    A further preferred embodiment is characterized in that the stop finger is supported on the base frame or the bearing arrangement via a spring element before reaching at least one of its stop positions and is supported on the base frame or the bearing arrangement when the stop position is reached. In this way, a simple, unbraked folding process of the stop finger from one of its stop positions into the other stop position can be carried out without hard knocking directly on the base frame or the bearing arrangement.
    Another embodiment provides that the stop finger is in drive connection with a drive means. By providing a drive means, a directed and controlled pivoting movement of the stop finger from one of its stop positions into the other stop position can take place.
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    Another embodiment is characterized in that the bearing arrangement can be adjusted relative to the base frame at least in the vertical direction. A vertical adjustment of the respectively selected stop surface of the stop finger can thus take place in the vertical direction.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each show in a highly simplified, schematic representation:
    1 shows a manufacturing plant in front view, but without the backgauge unit;
    FIG. 2 shows the production system according to FIG. 1 with backgauge units, in a rear view and in a diagram;
    3 shows a partial area of the rear stop unit, with the stop finger in the first stop position, in a side view;
    Fig. 4 shows the rear stop unit according to Fig. 3, but in the second stop position of the stop finger, in a side view.
    To begin with, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numerals or the same component names. The location information selected in the description, e.g. above, below, to the side, etc., referring to the figure described and illustrated immediately, and if the position is changed, these are to be applied accordingly to the new position.
    The term “in particular” is understood in the following to mean that it may be a more specific training or more specific specification of an object or a method step, but does not necessarily have to represent a mandatory, preferred embodiment of the same or a procedure.
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    1 and 2, a manufacturing system 1 is shown in a highly schematic, simplified representation, which in the present case is designed in particular for the free bending of workpieces 2 to be manufactured from sheet metal by means of die bending. To form a backgauge for the sheet metal or the workpiece 2 to be produced, a possible arrangement and design is shown and described in more detail in FIGS. 3 and 4.
    The production system 1 used for the bending in the present case comprises a bending machine, in the present exemplary embodiment a bending press 3, in particular a press brake or a press brake, for producing the workpieces 2 or work parts between at least one bending tool 4 that can be adjusted relative to one another. The bending tool 4 in the present exemplary embodiment comprises at least one bending punch 5, but mostly several bending dies 5, and at least one bending die 6, but mostly several bending dies cooperating therewith. The at least one bending die 5 is arranged above the workpiece 2 to be manufactured on the bending press 3 and is also held there accordingly, in particular clamped. The at least one bending die 6 is also held on the bending press 3, in particular held clamped thereon.
    In the case of such bending presses 3, the coordinate system is basically referred to as the “X” direction, that which runs in a horizontal plane and at a right angle (in the normal direction) with respect to the longitudinal extent of the bending tool 4, in particular its bending die 5 and bending die 6. Thus, this is the direction which also corresponds to the feed direction or the removal direction. The “Y” direction is understood to mean the vertical direction, which thus runs in the height direction of the bending tool 4 and further at a right angle and thus in the normal direction with respect to the horizontal plane. Finally, the “Z” direction is understood to mean that direction which runs in the longitudinal direction or in the longitudinal extent of the bending tool 4, in particular its bending punch 5 and bending die 6. The longitudinal extent of the bending edge or bending line defined by the bending tool 4 is thus also aligned in the “Z” direction.
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    A machine frame 7 of the bending press 3 comprises, for example, a base plate 8, on which vertically projecting, spaced from one another in the transverse direction and parallel to each other side walls 9, 10 are arranged. These are preferably connected to one another at their end regions spaced apart from the base plate 8 by a solid transverse assembly 11, for example formed from a sheet metal molded part.
    The side cheeks 9, 10 can be approximately C-shaped to form a free space for the shaping of the workpiece 2, a fixed first press beam 13 or lower, in particular standing on the base plate 8, on front end faces 12 of legs of the side cheeks 9, 10 near the floor Press beam 13 is attached. This stationary and fixed press beam 13 can also be referred to as a press table, on which parts of the bending tool 4 are arranged and also held. On the front end faces 14 of legs removed from the base plate 8, a further pressure bar 16, in particular a pressure bar, which is relatively adjustable relative to the pressure bar 13 forming the table bar, is mounted in linear guides 15. The press bar 16 can also be referred to as a second press bar or upper press bar, but also as a pressure bar.
    End faces 17, 18 of the two press beams 13, 16 lying opposite one another and running parallel to one another can be provided with tool holders 19, 20 for fitting with the bending tool or tools 4. The bending tool or tools 4 can also be held on the tool receptacles 19, 20 with the interposition of an adapter (not shown in more detail), although this is rather considered to be not favorable for an exchange process of individual components or of the entire bending tool 4, but may also be a possibility.
    The bending press 3 shown has a drive arrangement 21 for the adjustable press beam 16, namely the pressure beam, e.g. two drive means 22 operated with electrical energy, which are connected to the line with a control device 24 fed from an energy network 23. The input terminal 25, for example, can be connected via a communication terminal connected to the control device 24
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    Operation of the bending press 3, in particular also the changing process of the bending tool 4, can be controlled.
    The drive means 22 can e.g. are electromotive spindle drives 26, as are generally known, of which actuating means 27 for a reversible actuating movement of the upper press beam 16 formed by the pressure beam are, for example, drive-connected to the latter. Irrespective of this, it would also be possible to form the drive means 22 by hydraulically and / or pneumatically actuated actuating means. Cylinder-piston arrangements can be used. But there would also be other drive means, such as Eccentric drives, toggle lever drives, rack and pinion drives, etc. are conceivable.
    Further details required for the operation of such a bending press 3, such as feed devices, control and / or measuring devices, are omitted in the present description in order to avoid an unnecessary length of the description.
    To support and support the sheet to be bent, a support table 28 can therefore be provided or arranged in the front area of the feed area of the bending press. The support table 28 is only partially shown and forms a support plane for the sheet to be bent.
    Furthermore, the production system 1 can also comprise a manipulator, not shown here, which removes at least a part of it from a stack of sheets to be deformed or bent and transfers it to the work area or the operating side of the bending press 3.
    The manipulator can in turn comprise gripping pliers, which in turn have gripping fingers. The gripping fingers each have clamping surfaces on the side facing the workpiece 2 to be manufactured. By a corresponding pivoting of the two gripping fingers against each other and the application of a sufficient clamping force, the interaction of the clamping surfaces will
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    Sheet or the workpiece 2 to be manufactured is held by the manipulator and moved and positioned accordingly. With the gripping fingers of the gripping pliers, a corresponding gripping and, subsequently, due to the clamping movement, a sufficient hold for the workpiece 2 to be manufactured from the sheet metal is ensured.
    The operating side is understood here to mean that area on the bending press 3 from which the sheets to be formed are fed and handled to the finished workpiece 2. The machine frame 7, in particular its side cheeks 9, 10 extend from the operating side to a rear of the machine frame 7, which is subsequently referred to as the depth or depth extension of the bending press 3, in particular the machine frame 7. The side cheeks 9, 10 of the machine frame 7, which are spaced apart from one another in the transverse direction of the bending press 3, form a width of the bending press 3 or of the machine frame 7, viewed in the direction of the width of the machine frame 7, the press beams 13, 16 with the arranged or trained tool holders 19, 20 extend.
    Furthermore, at least one, preferably also a plurality of rear stop units 29 is provided or arranged between the side cheeks 9, 10 and on the side of the press beams 13, 16 facing away from the operating side. Such backgauge units 29 are known in principle and, in order not to unnecessarily extend the description, a general description is omitted here.
    The at least one rear stop unit 29 comprises a stop finger 30 with mostly a plurality of first stop elements 31 arranged or formed one behind the other in the direction of the stop, which first stop elements 31 each for positioning the sheet to be machined on the side of the press beams 13, 16 facing away from the operating side, depending on the selection thereof serve. A single stop finger 30 is provided on the at least one rear stop unit 29, but this can be used in different directions of use.
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    The first stop element 31 has or the first stop elements 31 each have a first stop surface 32 for the sheet metal or workpiece 2 to be positioned thereon in the “X” direction and thus in the depth direction with respect to the bending region or the bending line for the bending process. The stop finger 30 usually has a small width in the “Z” direction and a larger or longer longitudinal extension in the “X” direction.
    In addition, the stop finger 30 and thus also the at least one first stop element 31 can be adjusted relative to the machine frame 7. This adjustment option is used so that the sheet metal to be deformed, for example resting on the bending die 6, can be pushed in the direction of the depth of the machine frame 7 (in the “X” direction) until the displacement path through the first pre-positioned first stop element 31 with its first stop surface 32 is limited. In this state, an end edge or an already bent leg of the sheet to be bent usually comes into contact with a first stop element 31 of the stop finger 30. Depending on the dimensions of the workpiece to be manufactured, the stop finger 30 and thus also the at least one first stop element 31 can be displaced by means of the entire rear stop unit 29 and can be positioned at the predefined locations.
    The stop finger 30 has, in the direction of its longitudinal extent in the “X” direction, a first end region 33 and a second end region 34 arranged at a distance therefrom. Furthermore, a base frame 35 is also provided, on which the stop finger 30 is arranged, in particular held thereon. Base frame 35 is understood here to mean everything by means of which the stop finger 30 can be held and moved relative to the machine frame 7 and can be arranged in the predetermined position. The movement or adjustment movement of the base frame 35 can take place in the “X” direction and / or in the “Z” direction. For the sake of clarity, the representation of traversing drives or guide arrangements has been largely or entirely dispensed with
    In the first stop position of the stop finger 30 shown here, its first end region 33 and, associated therewith, also the first stop surface 32 of the
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    13/28 at least a first stop element 31 facing the workpiece 2 to be manufactured. In this first stop position of the stop finger 30, the sheet to be bent or the pre-bent workpiece 2 can be brought from the operating side to the pre-positioned first stop element 31 and placed against it with the bending tool 4 open.
    As can now be seen better from FIGS. 2 to 4, at least one second stop element 36 with a second stop surface 37 is provided on the same stop finger 30 in addition to the at least one first stop element 31. This is largely plate-shaped, and has projections and / or steps to form the stop elements 31 and / or 36. Furthermore, a bearing arrangement 38 is provided on the base frame 35, of which a pivot axis 39 is defined. The pivot axis 39 has a longitudinal extent extending in the horizontal direction and is additionally oriented in a normal direction with respect to the longitudinal extent of the stop finger 30. Furthermore, the pivot axis 39 has a parallel orientation with respect to the “Z” direction or “Z” axis.
    The stop finger 30 is pivotally mounted with its second end region 34 on the base frame 35 by means of the bearing arrangement 38. This makes it possible to pivot the stop finger 30 from its first stop position, in which it is arranged projecting in the direction of the bending tool 4 or the press beams 13, 16, into a second stop position projecting in the opposite direction. Basically, that stop element or those stop elements which face the bending tool 4 in the first stop position are referred to as first stop elements 31. That stop element or those stop elements which, in the second stop position, face the bending tool 4 for the positioned contact of the sheet metal or the workpiece 2 are referred to as second stop elements 36.
    The basic alignment and arrangement of the stop finger 30 takes place in a horizontal plane, the respective stop surfaces 32, 37 of the stop elements 31, 36 in a normal direction - that is, at a right angle - to the
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    14/28 horizontal plane are aligned. Furthermore, the stop surfaces 32, 37 are arranged so as to extend in the longitudinal direction in a parallel direction with respect to the bending line or the press beams 13, 16.
    If the stop finger 30 has been moved into its second stop position or stop position, the second stop surface 37 of the at least one second stop element 36 faces the workpiece 2 to be produced, as a result of which the sheet metal to be bent can be supported on it.
    As described above, the basic orientation and arrangement of the stop finger 30 with respect to its flat sides is in a horizontal direction and thus in a parallel orientation with respect to a horizontal plane. Thus, a pivot angle of the stop finger 30 between its first stop position and its second stop position is 180 °, so that the horizontal alignment takes place in both stop positions.
    Depending on the design and arrangement of the stop finger 30, it can also have a plurality of first stop surfaces 32. These can be arranged or formed one behind the other in the direction of the longitudinal extension of the stop finger 30 and at a distance from one another or at a distance from one another. A first stop element 31 with its first stop surface 32 can e.g. be formed by an end face of the stop finger 30.
    If the stop finger 30 is in its first stop position, further first stop surfaces 32 of further first stop elements 31 can also be arranged on an upper side 40 of the stop finger 30. Since these are mostly arranged or formed in the vertical direction in mutually different positions and thus at a distance from one another or at a distance from one another, the bearing arrangement 38 for the stop finger 30 can be arranged and adjusted relative to the base frame 35 at least in the vertical direction (“Y” direction) to lead on the base frame 35. The illustration of an actuator or a guide arrangement has been omitted for the sake of clarity. By means of this adjustment movement of the bearing arrangement 38 and thus also the stop finger 30, an adjustment and
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    Alignment of the respectively selected first stop surface 32 or the respectively selected second stop surface 37 with respect to the sheet or workpiece 2 to be supported thereon. The vertical height adjustment of the respective stop surface 32 or 37 is usually carried out in such a way that the sheet to be bent rests on the bending die 6 and preferably also has a horizontal orientation in this area or section.
    With the same unchanged position - namely the first stop position - of the stop finger 30, the second stop surface 37 of the at least one second stop element 36 is located on an underside 41 of the stop finger 30. Furthermore, the second stop surface 37 of the at least one second stop element 36 is preferably in the area or in a longitudinal or end portion of the first end portion 33 of the stop finger 30 arranged or formed. The designation of the upper side 40 and the lower side 41 refers to the illustration in FIG. 3 with the first stop position of the stop finger 30. After the pivoting movement from the first stop position into the second stop position - see FIG. 4 - that flat side is then , which has formed the top 40 in FIG. 3, arranged on the underside. The same applies in the opposite direction to the bottom 41, which is then arranged in the second stop position on the top. The stop finger 30 is preferably predominantly designed as a flat profile, which is stepped or stepped in the direction of its longitudinal extent to form the stop elements 31, 36.
    It would also be possible for a first stop element 31 and a second stop element 36 arranged opposite this to be formed by a crank formed in the stop finger 30. The stop finger 30 thus has a Z-shaped cross section with respect to its longitudinal extent between the first end region 33 and the second end region 34 in the section of the at least one offset. The opposite arrangement of the first stop element 31 and the second stop element 36 is related to the two flat sides of the stop finger 30. This is the first stop element 31 and the second stop element arranged opposite it
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    16/28 in the direction of the longitudinal extension of the stop finger 30 arranged slightly offset from each other. However, it would also be possible to design the stop finger 30 continuously, possibly with the exception of the bearing arrangement 38, and to design the at least one first stop element 31 and / or the at least one second stop element 36 as a rib or web projecting over the surface or the flat side.
    In order to achieve a defined alignment of the stop finger 30 with respect to the base frame 35, the stop finger 30 can be supported in at least one of its stop positions, but preferably in both of its stop positions directly on the base frame 35 or part of the bearing arrangement 38. This is indicated schematically in FIG. 2.
    The support can also be provided by means of an intermediate spring element 42 on the base frame 35 or part of the bearing arrangement 38. This is shown in simplified form in FIGS. 3 and 4 on the right next to the pivot axis 39.
    However, it would also be conceivable that, for damping purposes, when the stop finger 30 changes position between its two stop positions, the stop finger 30 is supported in a damped manner before reaching and assuming the final stop position via a spring element 42 on the base frame 35 or a part of the bearing arrangement 38 and in final stop position is then supported directly against the base frame 35 or part of the bearing assembly 38. The spring element 42 or damping element can e.g. be formed by a spiral spring, a plastic body or a spiral leaf spring. This is shown in simplified form in FIGS. 3 and 4 on the left next to the pivot axis 39.
    To carry out the pivoting movement of the stop finger 30, this can be done with a schematically simplified drive means 43, such as a rotary actuator, a cylinder-piston arrangement or the like are in drive connection. However, it would also be possible for a folding operation to be carried out manually by an operator.
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    The switching or folding of the stop finger 30 between its two stop positions can also be carried out by a combined adjustment movement of the bearing arrangement 38 with respect to the base frame 35 and the base frame 35 with respect to the machine frame 7.
    For example, In the bending program stored in the control device 24, it may be stored or specified that an extended stop area — in the present case the second stop position of the stop finger 30 — is required in the bending process to be carried out. The stop finger 30 is then folded over automatically when the step is switched on. The base frame 35 moves with the stop finger 30 in that area or section of the bending press 3 in which the pivoting or folding movement is to be carried out. Ideally, this is the rear area of one of the side cheeks 9, 10. There is a stop element 44 - see FIG. 2 for the side cheek 10 located there on the left - which serves to carry out the folding process. The stop element 44 can e.g. be formed by a bolt made of plastic or metal. The same can be extended from the side cheek 10 pneumatically or electromagnetically. The stop finger 30 moves with the already existing kinematics of the rear stop unit 29 from above onto the extended stop element 44, which serves as a folding aid or as a folding element. A coordinated and coordinated adjustment movement in the “X” direction and the “Y” direction or their axial direction enables the stop finger 30 to be gently folded over about the pivot axis 39.
    The folding or swiveling of the stop finger 30 from one stop position into its other stop position can be carried out by the method steps specified below. The first stop position of the stop finger 30 is assumed as the starting position.
    At least one stop element 44 is provided which, after the stop finger 30 has been positioned, is brought into an overlapping position with the stop finger 30 by means of the movable base frame 35. The stop finger 30 is arranged above the stop element 44. Furthermore,
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    18/28, the stop element 44 is arranged at a distance from the bearing arrangement 38 of the stop finger 30 in the “X” direction and is therefore either in front of or behind the bearing arrangement 38. In principle, the stop element 44 can remain stationary during the pivoting or folding process. The stop finger 30 is then adjusted in the “Y” direction in the direction of a footprint (floor) by means of the base frame 35 until the stop finger 30 rests on the stop element 44. Through a combined adjustment movement of the base frame 35 and the stop finger 30 mounted thereon further in the “Y” direction and thus in the direction of the contact surface (floor) and an adjustment movement of the base frame 35 together with the bearing arrangement 38 in the direction of the stop element 44, the change in position of the Stop finger 30 are performed. If the stop finger 30 has a position projecting upwards in the vertical direction (in the “Y” direction), the further movement into the other stop position can preferably be carried out automatically simply by the weight of the stop finger 30. In the position which rises upwards in the vertical direction, the bearing arrangement 38 is located approximately below the stop element 44.
    The exemplary embodiments show possible design variants, it being noted at this point that the invention is not restricted to the specially illustrated design variants of the same, but rather also various combinations of the individual design variants with one another are possible and this variation possibility is based on the teaching of technical action through the present invention Ability of the specialist working in this technical field.
    The scope of protection is determined by the claims. However, the description and drawings are to be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions. The object on which the independent inventive solutions are based can be found in the description.
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    All information on value ranges in the objective description should be understood to include any and all sub-areas, e.g. the information 1 to 10 is to be understood in such a way that all sub-areas starting from the lower limit 1 and the upper limit 10 are also included, i.e. all sub-areas begin with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
    For the sake of order, it should finally be pointed out that, for a better understanding of the structure, elements have been partially shown to scale and / or enlarged and / or reduced.
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    LIST OF REFERENCE NUMBERS
    manufacturing plant 31 first stop element workpiece 32 first stop surface bending press 33 first end area bending tool 34 second end area punch 35 base frame bending die 36 second stop element machine frame 37 second stop surface baseplate 38 bearing arrangement side cheek 39 swivel axis side cheek 40 top cross-dressing 41 bottom Front face 42 spring element pressing bars 43 drive means Front face 44 stop element
    linear guide
    pressing bars
    face
    face
    tool holder
    tool holder
    drive arrangement
    drive means
    energy grid
    control device
    input terminal
    spindle drive
    actuating means
    support table
    Back gauge unit
    stop finger
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    权利要求:
    Claims (14)
    [1]
    claims
    1. back gauge unit (29) for a production system (1) for free bending or embossing a workpiece (2) to be made from sheet metal, comprising a stop finger (30) with at least one first stop element (31) arranged or formed thereon with a first stop surface ( 32), the stop finger (30) having a longitudinal extension with a first end region (33) and a second end region (34) spaced apart therefrom, a base frame (35), on which base frame (35) the stop finger (30) is arranged, wherein in a first stop position of the stop finger (30) its first end region (33) and the first stop surface (32) of the at least one first stop element (31) can be turned towards the workpiece (2) to be manufactured, characterized in that the stop finger (30) furthermore has at least one second stop element (36) with a second stop surface (37) that a bearing arrangement (38) is provided, which bearings arrangement (38) defines a pivot axis (39) oriented in the horizontal direction and in the normal direction with respect to the longitudinal extent of the stop finger (30) and is arranged on the base frame (35) that the stop finger (30) with its second end region (34) by means of the Bearing arrangement (38) is pivotally mounted on the base frame (35) such that the stop finger (30) can be pivoted from its first stop position into a second stop position about the pivot axis (39) of the bearing arrangement (38) and that in the second stop position the second stop surface ( 37) of the at least one second stop element (36) can be turned towards the workpiece (2) to be manufactured.
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    [2]
    2. rear stop unit (29) according to claim 1, characterized in that a pivoting angle of the stop finger (30) between its first stop position and its second stop position is 180 °.
    [3]
    3. backstop unit (29) according to claim 1 or 2, characterized in that the stop finger (30) in both stop positions each have a parallel orientation with respect to a horizontal plane.
    [4]
    4. rear stop unit (29) according to any one of the preceding claims, characterized in that the first stop surface (32) of the at least one first stop element (31) is formed by an end face of the stop finger (30).
    [5]
    5. rear stop unit (29) according to any one of the preceding claims, characterized in that further first stop surfaces (32) of further first stop elements (31) when the stop finger (30) is in the first stop position on an upper side (40) of the stop finger (30 ) are arranged.
    [6]
    6. rear stop unit (29) according to any one of the preceding claims, characterized in that the second stop surface (37) of the at least one second stop element (36) when the stop finger (30) is in the first stop position on an underside (41) of the stop finger ( 30) is arranged.
    [7]
    7. rear stop unit (29) according to any one of the preceding claims, characterized in that the second stop surface (37) of the at least one second stop element (36) is arranged or formed in a longitudinal section of the first end region (33) of the stop finger (30).
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    [8]
    8. rear stop unit (29) according to any one of the preceding claims, characterized in that a first stop element (31) and a second stop element (36) arranged opposite this are formed by an offset formed in the stop finger (30).
    [9]
    9. rear stop unit (29) according to any one of the preceding claims, characterized in that the stop finger (30) is supported in at least one of its stop positions on the base frame (35) or the bearing arrangement (38).
    [10]
    10. rear stop unit (29) according to any one of the preceding claims, characterized in that the stop finger (30) is supported in at least one of its stop positions via a spring element (42) on the base frame (35) or the bearing arrangement (38).
    [11]
    11. rear stop unit (29) according to one of claims 1 to 9, characterized in that the stop finger (30) is supported before reaching at least one of its stop positions via a spring element (42) on the base frame (35) or the bearing arrangement (38) and is supported on the base frame (35) or the bearing arrangement (38) when the stop position is reached.
    [12]
    12. rear stop unit (29) according to any one of the preceding claims, characterized in that the stop finger (30) with a drive means (43) is in drive connection.
    [13]
    13. rear stop unit (29) according to any one of the preceding claims, characterized in that the bearing arrangement (38) with respect to the base frame (35) is adjustable at least in the vertical direction relative thereto.
    [14]
    14. Manufacturing plant (1) for free bending or embossing of a workpiece to be manufactured from a sheet (2) comprising
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    24/28 a bending press (3) with a machine frame (7) and press bars (13, 16) and a bending tool (4) held on the press bars (13, 16), at least one backgauge unit (29) for the sheet metal or the item to be manufactured Workpiece (2), characterized in that the at least one backgauge unit (29) is designed according to one of the preceding claims.
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    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3427853A1|2019-01-16|
    AT519644B1|2018-09-15|
    EP3427853B1|2020-02-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3421359A|1966-09-16|1969-01-14|Daniel M Gibbs|Kick-up back stop for press brake|
    US3812695A|1970-05-25|1974-05-28|Hurco Mfg Co Inc|Back gauge for press brake|
    DE3413047A1|1984-04-09|1985-10-17|Amada Co. Ltd., Isehara, Kanagawa|MEASURING DEVICE|
    US4583391A|1984-09-20|1986-04-22|Dynamics Research Corporation|Adjustable gage stop|
    DE19529570A1|1995-08-11|1997-02-20|Reinhardt Gmbh Maschbau|Workpiece stop device|
    DE10163498C1|2001-12-21|2003-02-20|Eht Werkzeugmaschinen Gmbh|Bending machine with adjustable lower tool has lower tool able to be coupled too adjustable stop, spacing of which from lower tool can be adjusted with coupling released|
    EP1772204A1|2005-10-07|2007-04-11|CREA S.r.l.|"Bending press for pieces of sheet metal with integrated manipulator in a rear positioning device"|
    JP2012024828A|2010-07-27|2012-02-09|Amada Co Ltd|Back gauge device in sheet metal working device|WO2020058326A3|2018-09-19|2020-06-18|Bystronic Laser Ag|Device and method for workpiece processing|CH668035A5|1986-09-19|1988-11-30|Beyeler Machines Sa|Folding press with die or matrix replacement system - has arms on rear mobile supports having pins which engage with holes in dies and matrices|
    AT511078B1|2011-05-10|2012-09-15|Trumpf Maschinen Austria Gmbh|MANUFACTURING SYSTEM WITH A TOOL CHANGE SYSTEM|
    ITTV20120072A1|2012-05-08|2013-11-09|Andrea Argentin|POSITIONAL REFERENCE DEVICE|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50554/2017A|AT519644B1|2017-07-05|2017-07-05|Backgauge unit and thus equipped production line|ATA50554/2017A| AT519644B1|2017-07-05|2017-07-05|Backgauge unit and thus equipped production line|
    EP18181653.9A| EP3427853B1|2017-07-05|2018-07-04|Rear stop element and production assembly with same|
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