EP2881188A1 - Unité de butée arrière pour cintreuse - Google Patents

Unité de butée arrière pour cintreuse Download PDF

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Publication number
EP2881188A1
EP2881188A1 EP14196009.6A EP14196009A EP2881188A1 EP 2881188 A1 EP2881188 A1 EP 2881188A1 EP 14196009 A EP14196009 A EP 14196009A EP 2881188 A1 EP2881188 A1 EP 2881188A1
Authority
EP
European Patent Office
Prior art keywords
production plant
base frame
plant according
actuating
clamping device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14196009.6A
Other languages
German (de)
English (en)
Other versions
EP2881188B1 (fr
Inventor
Walter Keplinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP2881188A1 publication Critical patent/EP2881188A1/fr
Application granted granted Critical
Publication of EP2881188B1 publication Critical patent/EP2881188B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/002—Positioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003—Positioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/26—Stops

Definitions

  • the invention relates to a production line with a bending press, as specified in claim 1.
  • the known from the prior art embodiment has the disadvantage that a compressed air network is needed to fix the stop elements can. Especially with individual machine designs can be provided that nowhere in the manufacturing plant a compressed air connection is needed. This would have to supply the clamping of the stop elements with compressed air installed its own compressed air network at the site of the manufacturing plant.
  • the present invention has for its object to provide an improved system for clamping the stop elements.
  • a production plant in particular for the free bending of workpieces to be produced from sheet metal, comprising a bending press, in particular press brake, arranged with a machine frame and press beams and in the longitudinal direction of the pressing beam or tool holders, and at least one arranged on the back of the pressing beam Schuanschlagiser formed with a base frame and at least one attached thereto stop member for positioning the workpiece to be machined.
  • the base frame of the back stop unit by means of an adjustment, along a horizontally oriented and normal to the longitudinal orientation of the pressing beam standing x-axis, relative to the machine frame adjustable.
  • the at least one stop element is manually adjustable in a set-up position of the base frame in a horizontally oriented and normal to the x-axis z-axis, along a guideway, relative to the base frame of the Schuanschlagiser.
  • the at least one stop element is further fixable in its position on the guideway by a clamping device, wherein the clamping device is releasable by an actuating device.
  • An advantage of the embodiment of the invention is that the clamping of the stop elements is automatically released when starting the Einrichtgna by an actuator.
  • the clamping device of the stop elements does not have to be controlled by the machine control.
  • the clamping device of the stop elements must not be connected to the machine control.
  • the power supply of the clamping device for releasing or clamping the stop finger is independent of external power sources. This results from the fact that the energy to be applied to release the clamping device can be generated directly in the actuator. In this case, the energy to be applied for releasing the clamping connection can be obtained by the movement of the base frame of the back stop unit relative to the machine frame.
  • the adjustment drive of the base frame provides the energy for releasing the clamping device, whereby the manufacturing plant can be operated more economically.
  • the actuating device comprises a liquid or gaseous active medium for transmitting power, and the active medium, upon activation of the formed in the form of a cylinder actuator, by means of a line to the clamping device is conductive.
  • the advantage here is that by means of a liquid or gaseous active medium, the force can be easily transferred from the actuator to the clamping device, as a pneumatic or hydraulic line is easy to install.
  • manually adjustable stop elements through the use of Compressed air are clamped. These stop elements can thus also be used for use in such a running manufacturing plant, in which case no external compressed air network must be provided to solve the clamping device.
  • the embodiment of the actuator in the form of a cylinder has the advantage that such a cylinder can be obtained as a standard element, and thus is inexpensive to purchase, and further through years of experience in dealing with such cylinders, they are less error prone.
  • the actuating device comprises a liquid or gaseous active medium for transmitting power
  • the active medium upon activation of the actuating element in the form of a pressure bellows, can be conducted by means of a line to the clamping device.
  • the advantage here is that by means of a liquid or gaseous active medium, the force can be easily transferred from the actuator to the clamping device, as a pneumatic or hydraulic line is easy to install.
  • manually adjustable stop elements are clamped by the use of compressed air. These stop elements can thus also be used for use in such a running manufacturing plant, in which case no external compressed air network must be provided to solve the clamping device.
  • the embodiment of the actuating element in the form of a pressure bellows has the advantage that it can be designed individually, and thus can be adapted in size to the requirements and space of such a production line or bending machine.
  • the pressure bellows is arranged between two base plates, wherein one of the two base plates is adjustable relative to the second base plate and guided by guide elements. It is advantageous here that the pressure bar is guided and stabilized by the two base plates, or by the guide elements. Furthermore, it is characterized by the fact that it is located between the two base plates, protected from environmental influences.
  • the actuating device comprises a pressure relief valve.
  • the advantage here is that the actuator, and the clamping device can not be destroyed by overpressure, for example, by too large actuation path.
  • the cylinder, or the pressure bellows can be sized larger than it is necessary, so to speak, a reserve are taken into account, the excess amount of air can be easily dissipated.
  • it can thus be achieved that a complete opening of the clamping device already takes place before the actuating element has been completely transferred from the basic position to its operating position. Associated with this, a release of the clamping device can be achieved before the base frame of the backgauge unit has been moved completely into the set-up position.
  • the actuating device comprises an intake valve, through which fresh air can be sucked. It is advantageous in such an intake valve, that the escaped by the pressure relief valve air amount can be easily supplemented with return of the actuator to its normal position again.
  • the actuating element is mounted on the stationary machine frame, and the pressure surface on the movable base frame of the back stop unit. It is advantageous that the actuating element does not have to be moved, and thus the inertia of the actuating element, or the actuator has no negative impact on the dynamics of the bending machine. Furthermore, it is easily possible in space on the machine frame to install the actuating element or the actuating device.
  • the pressure surface on the stationary machine frame, and the actuating element is mounted on the movable base frame of Häanschlagiser. It is advantageous that the lines to be able to transmit the actuating force from the actuating element to the clamping device, can be carried out largely rigid, since the actuating element is moved with the base frame. As a result, the lines also have reduced mechanical wear.
  • the actuating element is connected by means of a mechanical transmission means with the clamping device.
  • a mechanical transmission means that this can be constructed in a simplified manner, with no pressure-bearing parts, as well as no seals must be used.
  • the mechanical transmission means comprises a cable.
  • the mechanical transmission means comprises a linkage.
  • the advantage here is that a linkage can be made very robust and inexpensive. This advantage can be used particularly when the actuating element is arranged close to the clamping device.
  • actuating element and the pressure surface can be positioned relative to one another in such a way that the stop elements in the set-up position of the back-stop unit are carried out between the tool holders such that they protrude at least partially into the operator side of the bending press.
  • the advantage here is that the machine operator does not have to pass through between the tool holders in order to adjust the stop elements can. This increases machine safety by reducing the potential safety risk of pinching between toolholders.
  • Fig. 1 to 5 is a manufacturing plant 1 for the free bending of sheet metal to be produced workpieces 2, as well as variants of a possible construction of such a manufacturing plant 1 shown in a schematically simplified representation.
  • the production plant 1 comprises a bending press 3, in particular a press brake, for producing the workpieces 2 or workpieces between relatively adjustable bending tools 4, such as bending punch 5 and bending die 6.
  • the bending punch 5 can also be referred to as an upper tool and the bending die 6 as a lower tool become.
  • a machine frame 7 of the bending press 3 comprises, for example, a base plate 8, on which vertically upwardly spaced, spaced apart in the transverse direction and parallel to each other side cheeks 9, 10 may be arranged. These are preferably connected to each other by a solid, formed for example from a sheet metal part cross member 11 at their distance from the bottom plate 8 end portions.
  • the side cheeks 9, 10 may be formed approximately C-shaped to form a free space for forming the workpiece 2, wherein a fixed, in particular on the bottom plate 8 upstanding, press bar 13 may be attached to front end faces 12 of bottom flanges of the side cheeks 9, 10 ,
  • This press bar 13 may also be referred to as a table bar.
  • At a distance from the bottom plate 8 legs of front end faces 14 may in linear guides 15 a to the table beam forming press bar 13 a relatively adjustable further press beams 16, in particular a pressure bar, be guided guided.
  • On opposite, mutually parallel end faces 17, 18 of the two pressing bars 13, 16 can be 19 arranged and equipped for mounting with the bending tools 4 tool holders 19, 20.
  • the bending press 3 shown has as drive arrangement 21 for the adjustable pressing beam 16, namely the pressure beam, at least one, here two drive means 22, which are e.g. are fed with electrical energy from a power grid 23 and additionally can be connected to a control device 24 line connected.
  • the operation of the bending press 3 is controlled via a line-connected input terminal 25 connected to the control device 24.
  • the drive means 22 may be e.g. to act electromotive spindle drives 26, as they are well known, of which adjusting means 27 for a reversible positioning movement of the upper beam formed by the pressure bar 16 with this, for example, are drive-connected. Regardless of this, it would also be possible to form the drive means 22 by means of hydraulically and / or pneumatically actuatable actuating means. It can find cylinder-piston arrangements application. But it would also be other drive means, such as. Eccentric drives, toggle drives, rack drives, etc. conceivable.
  • the manufacturing plant 1 may also include a manipulator not shown here, which at least a piece of it takes from a supply stack of sheets to be deformed or preciselykantenden and spends in the work area or the operating side of the bending press 3.
  • the bending tools 4, in particular the bending punch 5 and / or the bending die 6, can each have their own recesses 28, 29 for manipulating them.
  • the bending press 3 comprises a Schuanschlagiser 31, which is arranged on a rear side 30 of the pressing bars 13, 16.
  • the operating side opposite side of the bending press 3 is referred to.
  • the operating side is understood here to be that region on the bending press 3, from which the supply and handling of the sheets to be formed is effected towards the finished workpiece 2, and on which the input terminal 25 can be arranged.
  • trained tool holders 19, 20 extend.
  • the back stop unit 31 comprises at least one stop element 32, which serves to position the sheet to be processed on the rear side 30 of the pressing bars 13, 16.
  • the Stop elements 32 are mounted on a base frame 33 which is part of the Hinterantschmati 31.
  • the base frame 33 is adjustable relative to the machine frame 7 by means of an adjusting drive 34, along a horizontally oriented and normal to the longitudinal direction 35 of the pressing bars 13, 16 x-axis 36.
  • the base frame 33 can in this case be mounted on the machine frame 7 by means of a guide arrangement 37.
  • the guide arrangement 37 is arranged directly on the base plate 8 or on the installation surface of the bending press 3.
  • the adjusting drive 34 can be embodied, for example, in the form of a ball screw, or in the form of a rack and pinion arrangement.
  • linear motors and the like as drive are also conceivable for the adjusting drive 34.
  • the stop element 32 is adjustable relative to the machine frame 7 by the above drive arrangement together with the base frame 33. This serves to ensure that the sheet to be deformed, for example, on the bending die 6 can be slid so far in the direction of the depth of the machine frame 7 until the displacement is limited by the first prepositioned stop member 32. In this state, most of an end edge of the sheet to be bent comes to a mostly designed as a stop finger stop element 32 to the plant.
  • the stop element 32 is positioned at predefined locations and can be adjusted at any time by means of the adjustment 34 easily and in any direction.
  • the at least one stop element 32 in a horizontally oriented and normal to the x-axis 36 z-axis 38, on a guide track 39, arranged. It is provided that the stop elements 32 are manually displaceable along the guide track 39. In operation, the stop members 32 are secured against unintentional displacement along the z-axis 38 by a clamping device 40. However, if the base frame 33 by means of the adjustment 34 in the direction of a Fig. 3 displaced setup position 41 shifted so the clamping device 40 is released by an actuator 42.
  • the set-up position 41 is that position of the back stop unit 31, in particular of the base frame 33, in which the clamping of the stop elements 32 is released and these can thus be displaced manually along the Z axis 38.
  • This setup position 41 is determined in principle by the machine manufacturer and is thus a predetermined position. Since the set-up position 41 depends only on the programming of the machine control and the positioning of the actuator 42, but this can be adapted at any time to customer requirements and thus be redefined at any time.
  • the set-up position 41 is set so that the back stop unit 31, in particular the base frame 33, is displaced as far as possible in the direction of the first pressing beam 13.
  • FIG. 3 Here is shown in a side view a greatly simplified construction of a bending press 3 with a Schuantschtechnik 31, and an actuator 42.
  • Fig. 4 a schematic structure of an actuator 42 is shown with a liquid or gaseous active medium.
  • Fig. 5 a schematic structure of an actuator 42 is shown with a lever system as a mechanism of action.
  • an actuating element 43 of the actuating device 42 is fastened to the stationary machine frame 7 or to another stationary component of the production system 1.
  • the mode of operation or the functional sequence for adjusting the stop elements 32 will be explained and described below on the basis of this exemplary embodiment.
  • the actuating element 43 is attached to the movable back stop unit 31, in particular to the base frame 33.
  • This embodiment is for the sake of brevity not shown in a separate figure, since the means will be like an actuator 43 to be attached to the base frame 33, the skilled person are obvious.
  • the position and the position of the attachment of the actuating element 43 is obvious.
  • the procedure for releasing the clamping device 40 and thus for manually adjusting the stop elements 32 works as follows.
  • the back stop unit 31, in particular the base frame 33 is displaced by means of the adjusting drive 34 in the direction of the set-up position 41.
  • a motion-coupled to the base frame 33 pressure surface 45 meets the actuator 43 of the actuator 42. This is on the Actuator 43 exerted by the pressure surface 45 a force.
  • the pressure surface 45 is attached to its own pressure element 46.
  • the pressure surface 45 is formed, for example, by one of the end faces of the back stop unit 31, in particular of the base frame 33.
  • the actuator 42 is contacted by the pressure surface 45 and thus exerted by the pressure surface 45, a force on the actuator 43, so will each further movement of the base frame 33 is converted into an adjusting movement of the actuating element 43.
  • the actuating element 43 can now, as shown in this embodiment, pressurize the active medium 44, this being forwarded by means of a pressure hose 47 to the clamping device 40 in order to release the clamping device 40.
  • the adjusting drive 34 can be used for adjusting the base frame 33 at the same time for the application of force to release the clamping device 40.
  • the mechanism for releasing the clamping device 40 is carried out in more detail.
  • the actuating element 43 In the unactuated state, that is without application of force by the pressure surface 45, the actuating element 43 is in a basic position 48.
  • the holding or displacement of the actuating element 43 in the basic position 48 can be accomplished by means of a spring element 49.
  • the pressure bellows 51 is compressed in this embodiment, whereby the active medium 44 is brought to pressure or displaced by the pressure hose 47 in the direction of clamping device 40.
  • the pressure bellows 51 is arranged in this embodiment between two base plates 52, wherein one of the two base plates 52 is connected to the machine frame 7 and the second of the base plates 52 is mounted relatively displaceable to the first base plate 52 on guide elements 53.
  • the spent by the pressure hose 47 in the clamping device 40 active medium 44 is used to solve the fixation of the stop members 32 by the clamping device 40.
  • the clamping device 40 comprises a clamping piston 54, which is pressed by means of a further spring element 55 on a clamping surface 56 of the stop element 32. As a result, a frictional force can arise, which holds the stop element 32 in position.
  • micro-toothing is formed on the clamping piston 54 and on the clamping surface 56, resulting in a positive connection.
  • the design or arrangement of the clamping device 40 is not limited to the illustrated embodiment, but rather it is possible that, depending on the machine type, a different type of clamping device 40 is provided. It is only important that the clamping device 40 is biased or is acted upon by a spring element, so that when the actuator 43 is in its normal position 48, the Schuanschlagtechnik 31 is fixed against displacement along the z-axis.
  • FIG. 5 a further and possibly independent embodiment of the construction of the actuator 42 is shown, again for like parts, the same reference numerals or component designations as in the preceding Fig. 1 to 4 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used Fig. 1 to 4 referred or referred.
  • Fig. 5 shows a further embodiment in which the clamping device 40 is released by means of a lever arrangement.
  • the embodiment described in this figure is very simple in construction and can thus be produced without great manufacturing effort, whereby the manufacturing costs for such an embodiment can be kept low.
  • the actuating element 43 is arranged directly in the guide track 39, the pressure surface 45 is in this case a surface of the first press beam 13. If now the back stop unit 31 is displaced in the direction of the first pressing beam 13, the pressure surface 45 contacts the actuating element 43 moved from its basic position 48 in its operating position 50. Due to the displacement of the actuating element 43, the clamping piston 54 is brought out of engagement with the stop element 32 via a contact surface 59.
  • FIGS. 1 . 2 . 3 . 4 and 5 shown embodiments form the subject of independent solutions according to the invention.
  • the relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures.
EP14196009.6A 2013-12-04 2014-12-03 Unité de butée arrière pour cintreuse Not-in-force EP2881188B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50799/2013A AT514930B1 (de) 2013-12-04 2013-12-04 Hinteranschlageinheit für Biegemaschine

Publications (2)

Publication Number Publication Date
EP2881188A1 true EP2881188A1 (fr) 2015-06-10
EP2881188B1 EP2881188B1 (fr) 2016-07-13

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EP14196009.6A Not-in-force EP2881188B1 (fr) 2013-12-04 2014-12-03 Unité de butée arrière pour cintreuse

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EP (1) EP2881188B1 (fr)
AT (1) AT514930B1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106391775A (zh) * 2016-11-25 2017-02-15 马鞍山市中元机床制造有限公司 一种新型折弯机
CN107350312A (zh) * 2017-09-12 2017-11-17 上海恺希机器人有限公司 挡止机构及折弯机
CN108311590A (zh) * 2018-02-06 2018-07-24 江苏江海机床集团有限公司 一种数控折弯机
CN111229883A (zh) * 2020-03-04 2020-06-05 胡见见 一种板材折弯机
CN112091080A (zh) * 2020-07-30 2020-12-18 南京安润朴新能源科技有限公司 一种充电机外壳制造用折弯机构及其操作方法
CN112845920A (zh) * 2021-01-11 2021-05-28 洪敏� 一种液压数控弯管机的弯管夹具
CN114433667A (zh) * 2022-02-09 2022-05-06 安徽良智数控机床制造有限公司 一种纯电折弯机的模块式后挡料结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107537892A (zh) * 2016-06-29 2018-01-05 张家港市五湖新材料技术开发有限公司 移动工作台
CN108856378B (zh) * 2018-08-29 2023-08-29 山东嘉意机械有限公司 一种折弯机用后挡料装置

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JP2000263137A (ja) * 1999-03-12 2000-09-26 Amada Co Ltd 追従装置と一体化したワーク位置決め突き当て装置
JP2004195466A (ja) * 2002-12-16 2004-07-15 Amada Co Ltd ワーク位置決め装置
US20050097940A1 (en) * 2002-05-13 2005-05-12 Trumpf Maschinen Austria Gmbh & Co. Kg. Production device, especially a bending press, and method for operating said production device
WO2012151601A1 (fr) * 2011-05-10 2012-11-15 Trumpf Maschinen Austria Gmbh & Co. Kg. Installation de fabrication comportant un système de changement d'outil

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DE9315209U1 (de) * 1993-10-08 1995-02-16 Trumpf Gmbh & Co Abkantpresse
DE50003665D1 (de) * 2000-12-04 2003-10-16 Trumpf Werkzeugmaschinen Gmbh Maschine für die Bearbeitung von Werkstücken, insbesondere von Blechen, mit wenigstens einer Biegestation sowie wenigstens einer Fügevorrichtung
AT509857B1 (de) * 2010-08-05 2011-12-15 Trumpf Maschinen Austria Gmbh Biegepresse mit einer werkteil-positionier- vorrichtung sowie ein verfahren zum betrieb
AT510689B1 (de) * 2011-03-07 2012-06-15 Trumpf Maschinen Austria Gmbh Verfahren zum positionieren eines werkstücks an einer abkantpresse

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2000263137A (ja) * 1999-03-12 2000-09-26 Amada Co Ltd 追従装置と一体化したワーク位置決め突き当て装置
US20050097940A1 (en) * 2002-05-13 2005-05-12 Trumpf Maschinen Austria Gmbh & Co. Kg. Production device, especially a bending press, and method for operating said production device
JP2004195466A (ja) * 2002-12-16 2004-07-15 Amada Co Ltd ワーク位置決め装置
WO2012151601A1 (fr) * 2011-05-10 2012-11-15 Trumpf Maschinen Austria Gmbh & Co. Kg. Installation de fabrication comportant un système de changement d'outil

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106391775A (zh) * 2016-11-25 2017-02-15 马鞍山市中元机床制造有限公司 一种新型折弯机
CN107350312A (zh) * 2017-09-12 2017-11-17 上海恺希机器人有限公司 挡止机构及折弯机
CN108311590A (zh) * 2018-02-06 2018-07-24 江苏江海机床集团有限公司 一种数控折弯机
CN111229883A (zh) * 2020-03-04 2020-06-05 胡见见 一种板材折弯机
CN112091080A (zh) * 2020-07-30 2020-12-18 南京安润朴新能源科技有限公司 一种充电机外壳制造用折弯机构及其操作方法
CN112845920A (zh) * 2021-01-11 2021-05-28 洪敏� 一种液压数控弯管机的弯管夹具
CN112845920B (zh) * 2021-01-11 2022-11-29 维格斯湖北流体技术有限公司 一种液压数控弯管机的弯管夹具
CN114433667A (zh) * 2022-02-09 2022-05-06 安徽良智数控机床制造有限公司 一种纯电折弯机的模块式后挡料结构

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EP2881188B1 (fr) 2016-07-13
AT514930A4 (de) 2015-05-15
AT514930B1 (de) 2015-05-15

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