EP1264647A1 - Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung - Google Patents

Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung Download PDF

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Publication number
EP1264647A1
EP1264647A1 EP02291151A EP02291151A EP1264647A1 EP 1264647 A1 EP1264647 A1 EP 1264647A1 EP 02291151 A EP02291151 A EP 02291151A EP 02291151 A EP02291151 A EP 02291151A EP 1264647 A1 EP1264647 A1 EP 1264647A1
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EP
European Patent Office
Prior art keywords
carriage
finger
folding
press brake
transport carriage
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
EP02291151A
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English (en)
French (fr)
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EP1264647B1 (de
Inventor
Eric Gascoin
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.)
Amada Europe SA
Original Assignee
Amada Europe SA
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Filing date
Publication date
Application filed by Amada Europe SA filed Critical Amada Europe SA
Publication of EP1264647A1 publication Critical patent/EP1264647A1/de
Application granted granted Critical
Publication of EP1264647B1 publication Critical patent/EP1264647B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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

Definitions

  • the present invention relates to a press brake for sheets, provided with a mobile device of stop fingers, said press comprising a swan-neck frame having on the side front a fixed lower deck, the upper side of which serves to support a folding die and a vertically movable upper deck in alignment with the lower deck and carrying by its lower part one or more folding tools cooperating with said die and located in a vertical plane separating an interior area from the press brake an external or frontal area in which the press operator folder can work without danger of accident, while the device stop finger movable includes a support rail which is arranged in the interior area of the press brake, runs parallel to the folding die and is movable at least vertically, a support for each stop finger resting on said rail and movably mounted on the latter parallel to said matrix as well as a carriage capable move the stop fingers at least partially out of the area inside of the press brake to the front outside area of the press brake.
  • a press brake for sheets of the type comprising a mobile stop finger device is known from the application of Patent EP 0 650 782 A1.
  • the support rail is associated with a first carriage carrying said rail and movable vertically on vertical slides of a second horizontally movable carriage and perpendicular to the vertical plane passing through the folding matrix, the two carriages being arranged in the interior area of the press folder.
  • stop finger supports cannot leave the interior area of the press brake so that the replacement of a stop finger forces the operator to advance his hands in said interior area and place these between the tool and the folding die.
  • the commonly used stop fingers have the same length, they cannot adapt without exchange of at least one abutment finger to a sheet, the abutment edge of which is cut into steps or some other layered way.
  • Yet another drawback of the device moving of stop fingers consists of the need to move the support rail each time the positioning of the stop edge of the sheet metal is changed from the folding die.
  • the object of the present invention is to overcome the drawbacks known above and to offer in combination with a press brake a movable stop finger device allowing each finger to abutment to protrude entirely beyond the vertical plane containing the folding edge of the folding die and being positioned individually in distance from said vertical plane.
  • the support rail is mounted in the interior area of the press brake a determined distance from the vertical folding plane, which a guide provided with locking means is capable of sliding the along the support rail and has two guides on its upper face lateral extending perpendicular to the folding plane, that a transport carriage is mounted on the guide carriage and is guided by the latter's lateral guides in its back and forth movements perpendicular to said folding plane, that the transport carriage has a longitudinal extension greater than the width of the guide carriage and has a finger at its front end located on the side of the folding plane removable stopper and at its rear end the motor housing drive, that a worm drive is mounted on the rear half of the transport trolley via bearings integral with said transport carriage and receiving the ends of said ball screw, as the rear end of said ball screw which extends perpendicular to the bending plane is coupled to the output shaft of the drive motor, and that the nut cooperating with the ball screw is fixed to the guide carriage on the side diverted from the folding plane by means of a flange which
  • stop fingers are motorized individually in their movements perpendicular to the fold plane and can be brought entirely out of the folding press into the outside area front of it. In this position, the stop fingers can be replaced or adjusted safely and can even be used to move the guide carriage to a new position relative to its support rail.
  • each stop finger is mounted on a finger holder
  • the means for securing the finger holder at the front end of the carriage transport comprise means forming a pivot axis for said finger holder relative to said transport carriage, said axis of pivoting extending in a direction orthogonal to that of displacement of said transport carriage.
  • said means of securing of the finger holder comprise means for locking said finger holder on the front end of said transport cart, said means being able to be unlocked under the effect of a excessive stress applied to said finger.
  • said means of securing include two coaxial pins arranged along said axis of pivoting of which one end is engaged in a bore of the finger holder and the second end of which is engaged in a bore of the front end of the carriage, said second end of the pins being chamfered, part of the chamfered end being engaged in the bore of the front end of said transport carriage and held in this position by a return spring, whereby under the effect of excessive stress applied to said finger, the springs of booster are compressed and allow the second ends of said pins to exit from said bores thus authorizing separation said finger holder relative to said transport trolley.
  • Figure 1 is shown schematically a cheek vertical lateral 1 of a frame in the form of a swan neck comprising front side a fixed lower deck 2, the upper side of which serves support to a folding die 3, as well as an upper deck (not shown) vertically movable in alignment with the deck lower 2 and carrying by its lower part one or more tools folding cooperating with said matrix 3.
  • the lower and upper aprons 2 with their respective matrix 3 and their folding tools define a vertical plane called folding 4 separating an interior area of press brake 5 from an area front exterior 6 in which the operator of the press brake can work without risk of personal injury.
  • the stop finger device 7 is normally arranged in the interior area 5 of the press brake between the side cheeks of the frame and behind the folding plane 4.
  • This device 7 comprises a support rail 8 which extends horizontally and parallel to the matrix 3 and to the vertical plane of folding 4.
  • the support rail 8 can occupy a fixed position in relates to its distance from the vertical folding plane 4, this distance being such that in the retracted position of the stop finger 9 the front end of the latter is in the inner zone of the press brake and is close to folding plane 4, but does not exceed this one.
  • the support rail 8 can if necessary be movable in the vertical direction to adapt to the height of the folding die 3. It could also be movable in a direction perpendicular to the folding plane 4 to allow the stop fingers 9 to take different distances from said plane 4.
  • Each stop finger 9 is associated with a carriage 10 which is slidably mounted on the support rail 8 with respect to which it can be locked in a chosen position after being moved there parallel to the folding die 3.
  • the first carriage 10 of guidance not only allows the fingers 9 to move along the support rail 8 but also serves as a support and guide for a transport carriage 11 movably mounted on the guide carriage 10 of so that you can move horizontally and perpendicular to the folding plane 4.
  • the transport carriage 11 is guided by two guides side 12, 13 of the guide carriage 10, these side guides 12, 13 being arranged on the upper face of the guide carriage 10 and extending horizontally and perpendicular to the vertical plane of folding 4.
  • the rear end of the stop finger 9 is carried by the front part of the transport carriage 11 whose length and stroke take into account the position of the support rail 8 and the guide carriage 10 associated with it so that, on the one hand, in end position before said transport carriage 11, the finger stop 9 and the front part of said carriage are located beyond the plane vertical folding 4, entirely in the front external zone 6 and that, on the other hand, at the end of the rear stroke, said transport carriage 11 and the front end of the stop finger 9 are entirely in the inner zone 5 of the press brake 1.
  • the length of the transport carriage 11 is at least twice the width of the guide carriage 10, width taken lengthwise of said transport cart 11. For for reasons of balance, it is however desirable that this length does not exceed three times the width of the guide carriage 10.
  • the transport carriage 11 At its rear end, the transport carriage 11 comprises a transverse partition 14 on which is fixed the casing of an engine drive 15 whose output shaft is connected by a coupling 16 at the rear end of a mechanism drive 17 comprising a ball endless screw 17a and a nut 17b which cooperates with said ball screw 17a.
  • the nut 17b is rendered immobile in rotation and in translation relative to the screw balls 17a using a vertical flange 18 fixed at the same time to the nut 17b and on side 10a of the guide carriage 10, side 10a diverted from the plane folding 4.
  • the flange 18 passes through an oblong recess 19 formed in the bottom of the transport carriage 11 over the entire active length of the screw ball 17a which extends perpendicular to the vertical plane of folding 4.
  • the ball screw 17a is arranged in the rear part of the transport carriage 11, this rear part being slightly more as long as the rear half of said carriage 11.
  • the ends of the screw balls are housed in rolling bearings 20, 21 which prevent said screw 17a to move axially and which are integral with the transport cart 11 and lean against the ends of two stiffening ribs 22, 23 provided on either side of the oblong recess 19 of the carriage 11.
  • the rear part of the transport carriage 11, part comprising the ball screw 17a covers the guide carriage 10 entirely, when said carriage transport 11 is in the advanced position in which at least the stop finger 9 is located entirely and preferably also the part front of said carriage 11 in the front external zone 6 in front of the plane vertical folding 4.
  • the stop finger 9 is in the retracted position of the carriage transport 11, it is its front part which covers the guide carriage 10 and its rear part is cantilevered with respect to the latter, the tilting of the transport carriage 11 being prevented by the guides sides 12, 13 of the guide carriage 10.
  • the stop finger 9, including its end front is in the inner area 5 of the press brake 1.
  • the transport carriage 11 At its front end, the transport carriage 11 includes a notch 24 in which is housed the rear tail 25 of a finger holder 26, the front end of which is also provided of a recess 27 receiving the rear tail of the stop finger 9 biased against the domed heads of two support screws 40a and 40b engaged in the finger holder 26 by means of a tensioning screw 28 whose head rests against the bottom of an oblong hole 29 formed in the tail 25 of the finger holder 26.
  • the rear end of the tail 25 of the finger holder 26 is articulated by an axis 30 on the lateral arms of the notch 24, the bottom is bevelled so that said tail 25 can escape upwards by tilting around axis 30 clockwise of a watch.
  • the axis 30, which is orthogonal to the direction of movement of the carriage 11, is produced by two pawns 41a and 41b.
  • the first end 42 of each pawn is engaged in a bore 43 formed in the tail 25 of the finger holder 26.
  • the other end 44 of each piece is chamfered.
  • This second chamfered end 44 partially penetrates a bore 45 made in the arms 46 and 47 of the front end of the carriage 11, arms which are defined by the notch 24.
  • the second end 44 of pins 41a and 41b is kept partially engaged in the bores 45 by return means 48 made up of preferably with Belleville washers.
  • the pawns 41a and 41b fill a double function: on the one hand, they constitute the pivot axis 30 of the stop finger 9 relative to the carriage 11, on the other hand, they form a finger holder 26 locking system on the front end (arms 46 and 47) of the transport carriage 11, this system being able to be unlocked due to excessive finger stress 9.
  • the return means 48 are compressed by such that the chamfered ends 44 of the pins 41a and 41b come out of the bores 45, thus freeing the finger holder 26 and therefore the finger 9.
  • the unlocking function makes it possible to avoid that in the event of wrong maneuvers, excessive constraints are applied to the various parts of the guide carriage and the transfer carriage.
  • the carriage transfer 11 comprises a part 50 forming a stop face additional 51 being added to the abutment faces constituted by the terminal end 52 of finger 9 and by the shoulder 53 of this same finger.
  • the additional abutment face 51 makes it possible to process sheets for which the distance between the edge in contact with the stop face and the fold line is greater than the maximum distance between the stop finger 9 itself in the maximum retracted position and the V folding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP02291151A 2001-05-23 2002-05-07 Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung Expired - Lifetime EP1264647B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0106798 2001-05-23
FR0106798A FR2825036B1 (fr) 2001-05-23 2001-05-23 Presse plieuse pour toles, munie d'un dispositif mobile de butee

Publications (2)

Publication Number Publication Date
EP1264647A1 true EP1264647A1 (de) 2002-12-11
EP1264647B1 EP1264647B1 (de) 2008-03-19

Family

ID=8863594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02291151A Expired - Lifetime EP1264647B1 (de) 2001-05-23 2002-05-07 Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung

Country Status (3)

Country Link
EP (1) EP1264647B1 (de)
DE (1) DE60225625T2 (de)
FR (1) FR2825036B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103894504A (zh) * 2014-04-03 2014-07-02 上海新力机器厂 用于大吨位折弯机的双x轴后挡料装置
FR3040643A1 (fr) * 2015-09-08 2017-03-10 Amada Europe Dispositif de contact mecanique, tel qu'une butee arriere pour une presse-plieuse
CN108405686A (zh) * 2018-03-26 2018-08-17 奥美森智能装备股份有限公司 折弯机的随动装置
CN114034578A (zh) * 2021-11-11 2022-02-11 詹清 一种特殊电路板抗折弯性测试机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480765B (zh) * 2013-09-10 2015-10-21 西安交通大学 一种覆盖件冲压生产线的直线电机直驱伸缩式送料装置
AT519203B1 (de) 2016-10-14 2018-10-15 Trumpf Maschinen Austria Gmbh & Co Kg Hinteranschlag für eine Biegemaschine
CN110639997B (zh) * 2019-09-30 2023-12-29 凌云西南工业有限公司 一种用于a柱辊弯装置的输送机构
CN111389993A (zh) * 2020-04-17 2020-07-10 马鞍山市绿之友机械制造有限公司 一种滚草刀刀条扭弯成型机及其方法
CN112705637A (zh) * 2020-12-31 2021-04-27 昆山乙盛机械工业有限公司 一种上下料机构及折弯模具
CN113877997B (zh) * 2021-09-26 2024-04-19 珠海富士智能股份有限公司 折弯方法
CN114472626A (zh) * 2021-12-16 2022-05-13 江苏海泰锻压设备有限公司 一种低形变型卷板机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733885A (en) * 1971-04-19 1973-05-22 E Brauer Automatic press brake back gauge
US4366689A (en) * 1979-03-05 1983-01-04 Kabushiki Kaisha Komatsu Seisakusho Numerical control method
EP0650782A1 (de) * 1993-10-08 1995-05-03 Trumpf GmbH & Co Abkantpresse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733885A (en) * 1971-04-19 1973-05-22 E Brauer Automatic press brake back gauge
US4366689A (en) * 1979-03-05 1983-01-04 Kabushiki Kaisha Komatsu Seisakusho Numerical control method
EP0650782A1 (de) * 1993-10-08 1995-05-03 Trumpf GmbH & Co Abkantpresse

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103894504A (zh) * 2014-04-03 2014-07-02 上海新力机器厂 用于大吨位折弯机的双x轴后挡料装置
CN103894504B (zh) * 2014-04-03 2016-01-06 上海新力机器厂 用于大吨位折弯机的双x轴后挡料装置
FR3040643A1 (fr) * 2015-09-08 2017-03-10 Amada Europe Dispositif de contact mecanique, tel qu'une butee arriere pour une presse-plieuse
EP3141309A1 (de) 2015-09-08 2017-03-15 Amada Europe Ausklappbarer anschlagstift
US9682416B2 (en) 2015-09-08 2017-06-20 Amada Europe Mechanical contact device, such as a back stop for a press brake
CN108405686A (zh) * 2018-03-26 2018-08-17 奥美森智能装备股份有限公司 折弯机的随动装置
CN108405686B (zh) * 2018-03-26 2024-02-23 奥美森智能装备股份有限公司 折弯机的随动装置
CN114034578A (zh) * 2021-11-11 2022-02-11 詹清 一种特殊电路板抗折弯性测试机
CN114034578B (zh) * 2021-11-11 2024-05-24 广东君治电子有限公司 一种特殊电路板抗折弯性测试机

Also Published As

Publication number Publication date
EP1264647B1 (de) 2008-03-19
DE60225625D1 (de) 2008-04-30
FR2825036A1 (fr) 2002-11-29
FR2825036B1 (fr) 2003-09-19
DE60225625T2 (de) 2009-04-02

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