EP1264647B1 - Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung - Google Patents

Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung Download PDF

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Publication number
EP1264647B1
EP1264647B1 EP02291151A EP02291151A EP1264647B1 EP 1264647 B1 EP1264647 B1 EP 1264647B1 EP 02291151 A EP02291151 A EP 02291151A EP 02291151 A EP02291151 A EP 02291151A EP 1264647 B1 EP1264647 B1 EP 1264647B1
Authority
EP
European Patent Office
Prior art keywords
pin
carriage
transport carriage
bending
press brake
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.)
Expired - Fee Related
Application number
EP02291151A
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English (en)
French (fr)
Other versions
EP1264647A1 (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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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 - Fee Related 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 sheet metal press brake equipped with a mobile stop finger device, said press comprising a gooseneck-shaped frame having a fixed lower deck on the front side, the upper face of which serves as support for a matrix. bending and a vertically movable upper apron in alignment with the lower apron and carrying at its lower part one or more folding tools cooperating with said die and located in a vertical plane separating an inner zone of the press brake from an outer zone or in which the operator of the press brake can work without danger of accident, while the mobile device of stop fingers comprises a support rail which is arranged in the inner area of the press brake, extends parallel to the folding die and is moveable at least vertically, a support for each stop finger resting on said rail and mounted movably on the latter parallel to said matrix and a carriage capable of moving the stop fingers at least partially out of the inner zone of the press brake to the front outer zone thereof.
  • a plate press brake of the type comprising a mobile device of stop fingers is known by the request of EP 0 650 782 A1 .
  • the support rail is associated with a first carriage carrying said rail and movable vertically on vertical rails of a second movable carriage horizontally and perpendicular to the vertical plane passing through the folding die, the two carriages being arranged in the inner zone of the press brake.
  • a disadvantage of this arrangement lies in the fact that the stop finger holders can not leave the inner area of the press brake so that the replacement of a stop finger forces the operator to advance his hands in said inner area and place these between the tool and the folding die. Since, moreover, the stop fingers commonly used have the same length, they can not be adapted without the exchange of at least one stop finger with a sheet whose stop edge is cut into steps. or in another staged way. Yet another disadvantage of the movable stopper device is the necessity of moving the support rail whenever the positioning of the stop edge of the sheets is changed with respect to the folding die.
  • the object of the present invention is to overcome the above-mentioned known drawbacks and to propose, in association with a press brake, a mobile device of stop fingers allowing each stop finger to protrude entirely beyond the vertical plane containing the folding edge of the the folding die and being individually positioned at a distance from said vertical plane.
  • the support rail is mounted in the inner zone of the press brake at a predetermined distance from the vertical plane of folding
  • a guide carriage provided with locking means is capable of slide along the support rail and has at its upper side two lateral guides extending perpendicularly to the fold plane
  • a transport carriage is mounted on the guide carriage and is guided by the lateral guides of the latter in its reciprocating movements perpendicular to said folding plane
  • the transport carriage has a longitudinal extension greater than the width of the guide carriage and carries at its end end located on the side of the folding plane a removable stop finger and to its rear end the crankcase of a drive motor
  • a worm drive is mounted on the rear half of the transport cart via palie secured to said transport carriage and receiving the ends of said ball screw, that the rear end of said ball screw which extends perpendicular to the fold plane is coupled to the output shaft of the drive motor, and that the nut cooperating with the ball screw is fixed on the guide carriage on the side diverted from the folding plane by means of a
  • stop fingers are motorized individually in their movements perpendicular to the bending plane and can be brought entirely out of the bending press in the frontal outer zone thereof. In this position, the stop fingers can be replaced or adjusted without danger and can even be used to move the carriage in a new position relative to its support rail.
  • each stop finger is mounted on a finger holder
  • the means for securing the finger holder to the front end of the transport carriage comprise means forming a pivot axis for said finger holder with respect to said transport carriage, said pivot axis extending in a direction orthogonal to that of displacement of said transport carriage.
  • said means for securing the holder comprises locking means of said finger holder on the front end of said transport carriage, said locking means being able to be unlocked under the effect of excessive stress applied audit finger.
  • FIG. 1 is schematically represented a vertical side cheek 1 of a gooseneck-shaped frame having on the front side a fixed lower deck 2 whose upper face serves as a support for a folding die 3, and an upper deck (not shown vertically movable in alignment with the lower apron 2 and carrying at its lower part one or more folding tools cooperating with said die 3.
  • the lower and upper aprons 2 with respectively their matrix 3 and their folding tools define a so-called vertical plane of folding 4 separating an inner area of the press brake 5 from a frontal outer zone 6 in which the operator of the press brake can work without risk of bodily injury.
  • the stop finger device 7 is normally disposed in the inner zone 5 of the press brake between the lateral cheeks of the frame and behind the fold plane 4.
  • This device 7 comprises a support rail 8 which extends horizontally and parallel to the die 3 and to the vertical plane of folding 4.
  • the support rail 8 can occupy a fixed position with respect to its distance from the vertical plane of folding 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 area of the press brake and is close to the fold plane 4, but does not exceed it.
  • the support rail 8 can optionally 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 fold plane 4 to allow the stop fingers 9 to take different distances from this plan 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 selected position after being moved parallel to the folding die 3.
  • the first carriage 10 not only allows the fingers 9 to move along the support rail 8 but also serves to support and guide a transport trolley 11 movably mounted on the trolley 10 so as to be able to move horizontally and perpendicular to the fold plane 4.
  • the transport carriage 11 is guided by two lateral guides 12, 13 of the guide carriage 10, these lateral 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 portion of the transport carriage 11 whose length and the maximum stroke take into account the position of the support rail 8 and the associated guide carriage 10 so that, on the one hand, in end-of-travel position before said transport carriage 11, the stop finger 9 and the front part of said carriage are, beyond the vertical folding plane 4, entirely in the frontal outer 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 trolley 11 is at least twice the width of the trolley 10, a width taken along the length of said trolley 11. For reasons of balance, however, it is 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 housing of a drive motor 15 whose output shaft is connected by a coupling 16 to the rear end of a mechanism drive 17 comprising a ball screw 17a and a nut 17b which cooperates with said ball screw 17a.
  • the nut 17b is rendered motionless in rotation and in translation relative to the ball screw 17a by means of a vertical flange 18 fixed at the same time to the nut 17b and on the side 10a of the guide carriage 10, side 10a diverted from the fold plane 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 ball screw 17a which extends perpendicular to the vertical plane of folding 4.
  • the ball screw 17a is disposed in the part rear of the transport carriage 11, this rear portion being slightly longer than the rear half of said carriage 11.
  • the ends of the ball screw are housed in rolling bearings 20, 21 which prevent said screw 17a from moving axially and which are integral with the transport carriage 11 and bear 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 completely covers the guide carriage 10, when said transport carriage 11 is in the advanced position in which at least the stop finger 9 is entirely and preferably also the front portion of said carriage 11 in the front outer zone 6 in front of the vertical plane of folding 4.
  • the stop finger 9 is in the retracted position of the transport carriage 11, it is its front part which covers the guide carriage 10 and its rear portion is cantilever with respect to the latter, the tilting of the transport carriage 11 being prevented by the lateral guides 12, 13 of the guide carriage 10.
  • the stop finger 9, including its front end is in the inner zone 5 of the press brake 1.
  • the transport carriage 11 At its front end, the transport carriage 11 comprises a notch 24 in which the rear tail is housed. 25 of a finger holder 26 whose front end is also provided with a recess 27 receiving the rear tail of the stop finger 9 biased against the curved heads of two support screws 40a and 40b engaged in the finger holder 26 by means of a tensioning screw 28 whose head bears 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 whose bottom is beveled so that said tail 25 can escape upwards by tilting around of the axis 30 in the direction of clockwise.
  • the axis 30, which is orthogonal to the direction of movement of the carriage 11, is formed by two pins 41a and 41b.
  • the first end 42 of each pin is engaged in a bore 43 formed in the tail 25 of the finger holder 26.
  • the other end 44 of each pin is chamfered. This chamfered second end 44 penetrates partially into a bore 45 made in the arms 46 and 47 of the front end of the carriage 11, which arms are defined by the notch 24.
  • the second end 44 of the pins 41a and 41b is kept partially engaged in the bores 45 by return means 48 preferably constituted by Belleville washers.
  • the pins 41a and 41b fulfill 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 locking system of the finger holder 26 on the front end (arms 46 and 47) of the transport carriage 11, this system being able to be unlocked under the effect of an excessive stress applied to the finger 9.
  • the means 48 are compressed in such a way that the chamfered ends 44 of the pins 41a and 41b emerge from the bores 45, thus releasing the finger holder 26 and thus the finger 9.
  • the pivoting function of the finger around the axis 30 allows it to follow the vertical displacement of the edge of the sheet applied against the finger under the effect of the folding action applied to the sheet by the cooperation of the Vee fixed bending and punching. Without this possibility of pivoting, the stop finger 9 would introduce into the sheet a parasitic stress during the folding operation.
  • the unlocking function makes it possible to avoid that, in the event of false maneuvers, excessive stresses are applied to the various members of the guide carriage and the transfer carriage.
  • the transfer carriage 11 comprises a piece 50 forming an additional stop face 51 in addition to the abutment faces formed by the end end 52 of the finger 9 and the shoulder 53 of that same finger.
  • the additional stop face 51 makes it possible to process plates for which the distance between the edge in contact with the abutment face and the fold line is greater than the maximum distance between the stop finger 9 itself in the maximum retracted position and the folding Vee.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (4)

  1. Falzpresse für Bleche, die mit einer beweglichen Vorrichtung von Anschlagfingern versehen ist, wobei die Presse ein Gehäuse (1) in Schwanenhalsform umfaßt, das auf der Vorderseite eine untere feste Tafel (2), deren Oberseite als Auflage für eine Falzmatrix (3) dient, und eine vertikal bewegliche obere Tafel in Ausrichtung mit der unteren Tafel aufweist, die an ihrem unteren Teil ein oder mehrere Falzwerkzeuge umfaßt, die mit der Matrix (3) zusammenwirken und sich in einer Vertikalebene (4) befinden, die eine innere Zone (5) der Falzpresse von einer äußeren oder vorderen Zone (6) trennt, in der der Bediener der Falzpresse ohne Unfallgefahr arbeiten kann, während die bewegliche Vorrichtung von Anschlagfingern (7) eine Stützschiene (8) umfaßt, die in der inneren Zone (5) der Falzpresse angeordnet ist und sich parallel zur Falzmatrix (3) erstreckt und zumindest vertikal beweglich ist, wobei eine Stütze (10) für jeden Anschlagfinger (9) auf der Schiene (8) liegt und beweglich auf dieser letztgenannten parallel zur Matrix (3) befestigt ist, sowie einen Wagen (11) umfaßt, der die Anschlagfinger (9) zumindest teilweise aus der inneren Zone (5) der Falzpresse (1) hinaus zu der äußeren vorderen Zone (6) derselben verschieben kann, dadurch gekennzeichnet, daß die Stützschiene (8) in der inneren Zone (5) der Falzpresse (1) in einem bestimmten Abstand zur vertikalen Falzebene (4) befestigt ist, daß ein Führungswagen (10), der mit Blockiermitteln versehen ist, entlang der Stützschiene (8) gleiten kann und an seiner Oberseite zwei seitliche Führungen (12, 13) umfaßt, die sich senkrecht zur Falzebene (4) erstrecken, daß ein Förderwagen (11) auf dem Führungswagen (10) befestigt ist und von den seitlichen Führungen (12, 13) dieses letztgenannten (10) bei seinen Hin- und Herbewegungen senkrecht zur Falzebene (4) geführt wird, daß der Förderwagen (11) eine größere Längsausdehnung als die Breite des Führungswagens (10) hat und an seinem vorderen Ende, das sich auf der Seite der Falzebene (4) befindet, einen abnehmbaren Anschlagfinger (9) und an seinem hinteren Ende das Gehäuse eines Antriebsmotors (15) trägt, daß ein Antrieb (17) mit Schnecke (17a) und Mutter (17b) auf der hinteren Hälfte des Förderwagens (11) mit Hilfe von Lagern (20, 21) montiert ist, die mit dem Förderwagen (11) verbunden sind und die Enden der Kugelschnecke (17a) aufnehmen, daß das hintere Ende der Kugelschnecke (17a), das sich senkrecht zur Falzebene (4) erstreckt, mit der Ausgangswelle des Antriebsmotors (15) gekuppelt ist, und daß die Mutter (17b), die mit der Kugelschnecke (17a) zusammenwirkt, am Führungswagen (10) auf der von der Falzebene (4) abgewandten Seite mit Hilfe eines Flansches (18) befestigt ist, der durch eine längliche Aussparung (19) geht, die im Boden des Förderwagens (11) über die gesamte aktive Länge der Kugelschnecke (17a) vorgesehen ist, und daß in der vorgeschobenen Position des Förderwagens (11), in der sich der Anschlagfinger (9) zur Gänze in der äußeren vorderen Zone (6) in Bezug zur vertikalen Falzebene (4) befindet, die hintere Hälfte desselben, die die Kugelschnecke (17a) umfaßt, beiderseits über die vertikalen Seiten des Führungswagens (10), Seiten, die parallel zur Falzebene sind, hinausragt.
  2. Falzpresse nach Anspruch 1, dadurch gekennzeichnet, daß jeder Anschlagfinger (9) auf einem Fingerträger (26) montiert ist, und daß die Mittel zur Verbindung des Fingerträgers (26) mit dem vorderen Ende des Förderwagens (11) Mittel (30) umfassen, die eine Schwenkachse für den Fingerträger in Bezug zum Förderwagen bilden, wobei sich die Schwenkachse in eine Richtung orthogonal zu der Verschieberichtung des Förderwagens (11) erstreckt.
  3. Falzpresse nach Anspruch 2, dadurch gekennzeichnet, daß die Verbindungsmittel des Fingerträgers (26) Mittel zur Verriegelung des Fingerträgers am vorderen Ende des Förderwagens (11) umfassen, wobei die Verriegelungsmittel unter der Wirkung einer starken auf den Finger (9) ausgeübten Kraft entriegelt werden können.
  4. Falzpresse nach Anspruch 3, dadurch gekennzeichnet, daß die Verbindungsmittel zwei koaxiale Stifte (41 a, 41 b) umfassen, die entlang der Schwenkachse angeordnet sind, deren erstes Ende in eine Bohrung des Fingerträgers eingreift und deren zweites Ende in eine Bohrung des vorderen Endes des Wagens eingreift, wobei das zweite Ende der Stifte abgeschrägt ist, wobei ein Teil des abgeschrägten Endes in die Bohrung des vorderen Endes des Förderwagens eingreift und in dieser Position durch eine Rückstellfeder gehalten wird, wodurch unter der Wirkung einer starken an den Finger (9) angelegten Spannung die Rückstellfedern zusammengedrückt werden und es den zweiten Enden der Stifte (41 a, 41 b) ermöglichen, aus den Bohrungen auszutreten und so die Lösung des Fingerträgers (26) vom Förderwagen (11) zu gestatten.
EP02291151A 2001-05-23 2002-05-07 Abkantpresse für Bleche mit einer beweglichen Anschlageinrichtung Expired - Fee Related EP1264647B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

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

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

Families Citing this family (11)

* 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
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
FR3040643B1 (fr) * 2015-09-08 2017-09-29 Amada Europe Dispositif de contact mecanique, tel qu'une butee arriere pour une presse-plieuse
AT519203B1 (de) 2016-10-14 2018-10-15 Trumpf Maschinen Austria Gmbh & Co Kg Hinteranschlag für eine Biegemaschine
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
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
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
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

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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
DE9315209U1 (de) * 1993-10-08 1995-02-16 Trumpf Gmbh & Co, 71254 Ditzingen Abkantpresse

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
EP1264647A1 (de) 2002-12-11
DE60225625D1 (de) 2008-04-30
FR2825036B1 (fr) 2003-09-19
FR2825036A1 (fr) 2002-11-29
DE60225625T2 (de) 2009-04-02

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