EP0077314B1 - Vorrichtung zum Abkanten einer Blechtafel - Google Patents

Vorrichtung zum Abkanten einer Blechtafel Download PDF

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Publication number
EP0077314B1
EP0077314B1 EP82890102A EP82890102A EP0077314B1 EP 0077314 B1 EP0077314 B1 EP 0077314B1 EP 82890102 A EP82890102 A EP 82890102A EP 82890102 A EP82890102 A EP 82890102A EP 0077314 B1 EP0077314 B1 EP 0077314B1
Authority
EP
European Patent Office
Prior art keywords
bending
holding
carrier
tool
metal plate
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
Application number
EP82890102A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0077314A1 (de
Inventor
Hans Aschauer
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.)
Cambio Ragione Sociale salvagnini SpA
Original Assignee
Voestalpine AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3562583&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0077314(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0077314A1 publication Critical patent/EP0077314A1/de
Application granted granted Critical
Publication of EP0077314B1 publication Critical patent/EP0077314B1/de
Expired 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/045—With a wiping movement of the bending blade

Definitions

  • the invention relates to a device for folding a sheet metal plate, consisting of a frame with two holding punches attached to a support for clamping the sheet metal plate, of which at least one is adjustable with its support transversely to the clamping plane, and from at least one on the one hand approximately parallel and on the other hand, a bending tool movably mounted transversely to the clamping plane, each having a drive for the two directions of movement and interacting with a holding stamp as a counter tool.
  • the invention is therefore based on the object to avoid these deficiencies and to provide a device of the type described above, in which not only a light construction is possible with simple constructional means, but also undesired bending of the holding stamps as a result of the bending forces occurring during the bending process is largely prevented.
  • the invention solves this problem in that the drive of the holding plunger, which is effective parallel to the clamping plane, is supported.
  • each of the holding stamps determining the bending edge and therefore serving as a counter-tool for the bending tool is particularly stressed by the drive of the bending tool acting approximately parallel to the clamping plane, the support of this drive on the carrier for the holding die serving as counter-tool results to a certain extent in a force short between the holding punch , the bending tool with its drive parallel to the clamping plane effective and the support of the holding plunger, so that other structural parts remain unloaded by these forces.
  • This has the advantage that, for example, for the holding stamp which can be adjusted transversely to the clamping plane, there can be no canting within the frame guide, because the holding stamps are not pushed away from the frame.
  • the support of the bending tool drive which acts approximately parallel to the clamping plane, on the carrier of the holding die forming the counter tool furthermore enables, in the case of a corresponding bending load, deformation in the sense of a bending apart of the holding die serving as the counter tool and the support of the bending tool drive. Since the position of the holding punch is determined by the frame, the unavoidable deformation will cause the support of the bending tool drive to bend out relative to the frame, as a result of which the desired course of the bending edge given by the holding punch can be ensured.
  • the connection of the holding plunger or its carrier to the frame remains largely stress-free because the drive-related forces are not transmitted to the frame. Due to the prevention of bending of the holding die serving as counter tool during the bending process according to the invention, the other holding die also remains free of larger bending loads, because pressure forces acting only transversely to the clamping plane are transmitted via the holding die serving as counter tool.
  • the drive which is approximately parallel to the clamping plane, consists of at least two actuators which are articulated on bow-shaped lugs of the carrier. Due to the actuators distributed over the length of the bending tool, a more uniform loading of the bending tool over its length and thus a more uniform loading of the holding die serving as a counter-tool can be ensured, the support of the actuators on bow-shaped projections of the carrier ensuring a corresponding introduction of the supporting forces into the carrier . Nevertheless, unequal bending forces can arise over the length of the holding punch. However, this can be taken into account in that the actuators can be adjusted with regard to their actuating force.
  • the bending tool drive which is approximately parallel to the clamping plane, must be supported on the support for the adjustable holding stamp for bending about the holding punch which can be adjusted transversely to the clamping plane.
  • the support of the bending tool acting parallel to the clamping plane on the support of the adjustable holding stamp would have a very unfavorable effect.
  • the bracket-shaped support lugs for supporting the drive which is approximately parallel to the clamping plane, can be positively connected to the support of the other holding stamp.
  • this form-fitting connection By means of this form-fitting connection, an analogous short circuit of forces can also be achieved for the other holding stamp as a counter-tool via the bending tool, its drive and the support of the holding stamp.
  • This form-fitting connection can be made very easily with the help of adjusting wedges, whereby it should be noted that the form-fitting connection must act parallel to the clamping plane, especially in the direction of action of the drive, because other conditions exist for the drive transversely to the clamping plane.
  • the devices shown for folding a sheet metal sheet essentially consist of a frame 1 in which two holding stamps 2 are arranged for clamping a sheet metal sheet 3.
  • the lower of the two holding stamps 2 is mounted so that it cannot be adjusted via its carrier 4 in the frame, while the upper holding stamp is fastened to a box-shaped carrier 5 which is height-adjustable in a guide 6 of the frame 1 and can be driven by means of a pair of cylinders 7.
  • a bending tool 8 is provided, the support 9 of which is articulated to tabs 10, so that the bending tool 8 can be adjusted both transversely to the clamping plane and parallel to it.
  • two separate drives 11 and 12 act on the carrier 9 of the bending tool 8, which are each effective in the specified directions of movement of the bending tool 8.
  • the interaction of the two drives 11 and 12 allows the bending tool 8 to be guided around the bending edge of the holding die 2 serving as a counter-tool, which results in particularly favorable bending conditions.
  • the drive 11 for the bending tool 8 which acts approximately parallel to the clamping plane, causes a strong bending load on the holding die 2 serving as a counter-tool, there is a risk that this holding die will be bent out due to this load.
  • the resulting odd bending edge course naturally causes uneven bending angles over the length of the bending edge, which should of course be avoided. If the holding die 2 forming the counter tool is adjustably mounted in the frame 1, as is the case in FIG. 1 for the upper holding die 2, then an undesired tilting of the holding die 2 with its carrier 5 in the guide 6 is also to be expected.
  • the drive 11 is not supported on the frame 1 but on the support 5 for the holding die 2 forming the counter tool.
  • the carrier 5 has a plurality of bow-shaped projections 13, to each of which an actuator 14 designed as a cylinder is articulated, which is connected to the carrier 9 of the bending tool 8. Since the drive 11 consists of a plurality of actuators 14 distributed over the length of the bending tool 8, which are supported on separate lugs 13 of the support 5, a more uniform introduction of the forces on both the bending tool and the support 5 can be ensured and thus the risk of Bending the upper holding punch 2 can be reduced.
  • Non-uniformities in the course of the bending edge can at best result from an uneven introduction of bending force, which can be taken into account by adjusting the actuating force of the actuating drives 14.
  • actuators designed as cylinders such control of the cylinders is particularly simple.
  • the device can be converted and a corresponding bending tool can be used, although the advantage of the force short circuit via the carrier of the holding tool forming the counter tool would be lost if no special measures are taken.
  • a positive connection between the bow-shaped lugs 13 of the carrier 5 for the upper holding stamp 2 and the carrier 4 of the lower holding stamp 2 is made for this purpose, so that this positive connection in turn has an equivalent force over the the lower tool forming the counter-tool 2 and the support of the drive 11 results.
  • each of the bow-shaped projections 13 carries a support body 15 running in the longitudinal direction of the bending tool 8, which protrudes into a recess 16 of the frame and can be fixed in the recess 16 by wedges 17.
  • These wedges 17 are connected to an actuating rod 18 which can be driven via an actuator 19, so that the wedges 17 can be engaged and disengaged together via the actuating rod 18. In the disengaged position, the wedges 17 release an adjustment path for the support body 15, which enables the bow-shaped projections 13 to be bent out.
  • two bending tools 8a and 8b are provided, as shown in FIGS. 5 and 6, it can be bent up and down without retrofitting.
  • the deformation of the holding punches 2a and 2b forming the respective counter tool is prevented by a corresponding support of the drives 11 a and 11 b on the supports 4 and 5 of the holding punch serving as counter tool, the support of the individual actuators 14 of the drives 11 acting parallel to the clamping plane a and 11b b on bow-shaped lugs 13a of the carrier 5 for the holding stamp 2a and on similar lugs 13b of the carrier 4 for the holding stamp 2b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP82890102A 1981-10-09 1982-07-15 Vorrichtung zum Abkanten einer Blechtafel Expired EP0077314B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0432981A AT372883B (de) 1981-10-09 1981-10-09 Vorrichtung zum abkanten einer blechtafel
AT4329/81 1981-10-09

Publications (2)

Publication Number Publication Date
EP0077314A1 EP0077314A1 (de) 1983-04-20
EP0077314B1 true EP0077314B1 (de) 1984-09-19

Family

ID=3562583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82890102A Expired EP0077314B1 (de) 1981-10-09 1982-07-15 Vorrichtung zum Abkanten einer Blechtafel

Country Status (5)

Country Link
US (1) US4783984A (enrdf_load_stackoverflow)
EP (1) EP0077314B1 (enrdf_load_stackoverflow)
JP (1) JPS5870924A (enrdf_load_stackoverflow)
AT (1) AT372883B (enrdf_load_stackoverflow)
DE (1) DE3260784D1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605815A1 (de) * 1986-02-22 1987-08-27 Weinbrenner Paul Maschbau Vorrichtung zum biegebearbeiten von blechtafeln
CN103372586A (zh) * 2012-04-28 2013-10-30 李向普 新型数控折弯机

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1204674B (it) * 1987-06-03 1989-03-10 Salvagnini Transferica Spa Macchina piegatrice per fogli di lamiera con premilamiera a compressione uniforme
IT1222347B (it) * 1987-07-03 1990-09-05 Antonio Codatto Pressa piegatrice per lamiere
FR2630356A1 (fr) * 1988-04-20 1989-10-27 Dimeco Alipresse Machine a plier les toles
DE3826310A1 (de) * 1988-08-03 1990-02-08 Rolf Nagel Vorrichtung zum erzeugen von blechabkantungen durch biegen
IT1242874B (it) * 1990-12-07 1994-05-18 Samat Srl Macchina per la piegatura di lamiere
IT1258577B (it) * 1992-04-22 1996-02-27 Antonio Codatto Dispositivo di movimentazione per lame di pressa piegatrice per lamiere
ES2063658B1 (es) * 1992-09-21 1996-12-01 Goiti S Coop Ltda Maquina perfeccionada plegadora de chapa.
JPH06226354A (ja) * 1993-01-29 1994-08-16 Amada Co Ltd 板材折曲げ加工装置
IT1278356B1 (it) * 1995-02-06 1997-11-20 Sapim Amada Spa Attrezzatura piegatrice per lamiere.
DE19523226A1 (de) * 1995-06-27 1995-12-14 Joachim Linde Verfahren und Vorrichtung zum Biegen von Blechen
DE19901796A1 (de) * 1999-01-19 2000-07-27 Reinhardt Gmbh Maschbau Biegemaschine
ES2190298B1 (es) * 2000-01-31 2004-10-16 Goiti, S.Coop Maquina plegadora de chapas metalicas.
CN1787888A (zh) * 2003-06-04 2006-06-14 芬兰动力有限公司 在弯曲金属板和/或部件的机器中测量弯曲角的系统以及使用此系统弯曲金属板和/或部件的机器与方法
ITUB20160836A1 (it) * 2016-02-18 2017-08-18 Olma S R L Gruppo di piegatura di una macchina utensile pannellatrice
CN105921572B (zh) * 2016-06-30 2018-03-27 江苏亚威机床股份有限公司 一种金属板料折边机折边机构
CN108746268B (zh) * 2018-05-29 2019-10-18 温州盛淼工业设计有限公司 一种电力母线槽自动生产机器人
EP3970876A1 (de) 2020-09-16 2022-03-23 Bystronic Laser AG Panelbender zum biegen von blechen
CN112207168A (zh) * 2020-10-23 2021-01-12 南京邮电大学 一种折边机折边梁驱动机构
CN112742916B (zh) * 2020-12-23 2022-08-30 佛山市美宝家家居有限公司 一种自动上料下料的折弯装置
CN112792167B (zh) * 2020-12-23 2022-11-22 江苏慧切智能制造科技有限公司 一种板材全自动折弯方法
DE102023201552A1 (de) 2023-02-22 2024-08-22 Robert Bosch Gesellschaft mit beschränkter Haftung Bearbeitungseinheit für im Wesentlichen ebene Werkstücke

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022122A1 (de) * 1979-06-20 1981-01-07 VOEST-ALPINE Aktiengesellschaft Biegemaschine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1966472A (en) * 1931-10-05 1934-07-17 Multigraph Co Apparatus for making address plates
US2822545A (en) * 1953-12-29 1958-02-11 Sperry Rand Corp Terminal crimping die
US2937689A (en) * 1957-02-08 1960-05-24 Uniflex Engineering Inc Material bending apparatus
US3009201A (en) * 1959-10-29 1961-11-21 Fawn Fabricators Inc Material bending machine with roll bar
US3149376A (en) * 1963-08-28 1964-09-22 Top Fab Co Post-forming machine
DE1807811C3 (de) * 1968-11-08 1974-09-05 Rudolf 8033 Planegg Linner Abkantmaschine
US3914974A (en) * 1974-04-19 1975-10-28 William Devore Lithographic plate bending arrangement
DE2542239A1 (de) * 1975-09-23 1977-03-31 Ernst Zentner Kg Elektro Feinm Biegevorrichtung fuer bleche o.dgl.
US3994152A (en) * 1976-02-19 1976-11-30 Wolters Oswald H Machine for bending cleat edges
IT1086365B (it) * 1977-09-19 1985-05-28 Salvagnini Transferica Spa Macchina per la produzione di pannelli di lamiera rettangolare con bordi piegati
JPS5456969A (en) * 1977-10-14 1979-05-08 Komatsu Mfg Co Ltd Automatic metal mold exchanging apparatus of press brake
CH622447A5 (en) * 1977-11-14 1981-04-15 Thalmann Konstruktionen Ag Bending machine
US4185487A (en) * 1978-05-30 1980-01-29 Engel Industries, Inc Side access cleat former apparatus and method of use

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022122A1 (de) * 1979-06-20 1981-01-07 VOEST-ALPINE Aktiengesellschaft Biegemaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605815A1 (de) * 1986-02-22 1987-08-27 Weinbrenner Paul Maschbau Vorrichtung zum biegebearbeiten von blechtafeln
CN103372586A (zh) * 2012-04-28 2013-10-30 李向普 新型数控折弯机

Also Published As

Publication number Publication date
ATA432981A (de) 1983-04-15
DE3260784D1 (en) 1984-10-25
AT372883B (de) 1983-11-25
US4783984A (en) 1988-11-15
JPS5870924A (ja) 1983-04-27
JPH033524B2 (enrdf_load_stackoverflow) 1991-01-18
EP0077314A1 (de) 1983-04-20

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