EP0353680A2 - Dispositif pour obtenir des rebords de tôle par pliage - Google Patents

Dispositif pour obtenir des rebords de tôle par pliage Download PDF

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Publication number
EP0353680A2
EP0353680A2 EP89114074A EP89114074A EP0353680A2 EP 0353680 A2 EP0353680 A2 EP 0353680A2 EP 89114074 A EP89114074 A EP 89114074A EP 89114074 A EP89114074 A EP 89114074A EP 0353680 A2 EP0353680 A2 EP 0353680A2
Authority
EP
European Patent Office
Prior art keywords
bending
tool
drive device
tools
movements
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
EP89114074A
Other languages
German (de)
English (en)
Other versions
EP0353680A3 (en
EP0353680B1 (fr
Inventor
Rolf Nagel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT89114074T priority Critical patent/ATE77270T1/de
Publication of EP0353680A2 publication Critical patent/EP0353680A2/fr
Publication of EP0353680A3 publication Critical patent/EP0353680A3/de
Application granted granted Critical
Publication of EP0353680B1 publication Critical patent/EP0353680B1/fr
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
    • 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 producing sheet metal bends by bending in which the workpiece can be clamped between two holding dies designed as counter-tools, in addition to an upper bending tool intended for downward bends, a lower bending tool intended for upward bends, one with a cross-section to the workpiece towards jaw-opening rocker carries one of the two bending tools on each of its two jaw edges and a drive device for essentially vertical tool movements is articulated on the rocker in addition to a drive device for essentially horizontal tool movements.
  • edge profiles can be formed in sheets in a multi-step process, without having to turn the workpiece when changing the bending direction within the edge sequence.
  • Manufacturing examples are refrigerator doors, luminaire housings, cladding elements for building walls and ceilings, control cabinet parts, steel furniture parts and shelf elements. Due to a programmed interaction of the drive device for essentially horizontal tool movements with the drive device for essentially vertical tool movements, the working surface of the bending tool used describes a path leading around the associated cold stamp, which protects the workpiece surface.
  • pressing devices in which the sheet is pressed into a die by a punch and the protruding side parts of the workpiece flip up accidentally.
  • a device of the type mentioned at the outset is already known from document EP 0 022 122 B1.
  • the two drive devices of this known device for producing sheet metal bending by bending are designed as crank drives.
  • a cylinder is inserted into the crank mechanism for essentially vertical tool movements, which cylinder is actuated to change the other bending tool when the bending direction is changed.
  • Another cylinder is used to move a pivot point on a drive rocker for the joint drive of the two crank drives.
  • the design of the drive devices and the programming of the path curve of the bending tool used are accordingly complicated. It also appears to be disadvantageous that the rocker arm, which opens in cross-section towards the workpiece, has no space in its mouth for bending overhanging edge strips of workpieces. On the other hand, a lot of working time is always lost when the bending direction is changed within an edge sequence and the other bending tool must be used for this purpose.
  • the invention has for its object to provide a bending device of the type mentioned, which on the one hand allows a quick changeover to the other bending tool with little effort and on the other hand offers ample space for bending overhanging workpiece parts.
  • rocker is hinge-like in two separately pivotable about the rocker axis and each carrying one of the two bending tools and one drive device is articulated on each jaw for substantially vertical tool movements.
  • the jaw width of the swing arm can thus be adapted to the space required by the workpiece part protruding from the two holding dies when bending. With only small sheet metal bends, the jaw width of the rocker is reduced, so that starting the other bending tool for the purpose of changing the bending direction requires little time. However, if the sheet to be bent is far from the holding dies designed as counter tools and if it is possibly already formed into a bulky structure by at least one bend, the jaw width of the rocker can be increased accordingly.
  • the two drive devices for essentially vertical tool movements only the one which is articulated to the jaws carrying the bending tool to be used is actuated in the working phase of the bending device.
  • the drive device for the we Significant horizontal tool movements are common to the two jaws.
  • the two drive devices can be designed for substantially vertical tool movements in widely differing maximum paths.
  • Advantages achieved with the invention are, in particular, that wider sheet metal bends and ultimately more complicated edge profiles can be produced and that the bending device can be used more universally in an enlarged area of application.
  • the drawing shows the bending device at the end of the bending process for a particularly wide bend 10 in a sheet metal 13 clamped between the fixed lower holding die 11 and the ventable upper holding die 12, after two substantially narrower bends 14 and 15 in the opposite bending direction on the same workpiece 13 have been manufactured.
  • a total of three drive devices 19, 20 and 21 are provided for the swing arm 18 of the bending device which is hinge-divided in the upper jaws 16 and the lower jaws 17, of which the drive device 19 is connected to the swing arm axis 23 via a hinge block 22, the drive device 20 in one on the top of the upper jaw 16 near the top bend Tool 24 attached bearing block 25 is articulated and the drive device 21 is articulated in a bearing block 27 attached to the underside of the lower jaw 17 near the lower bending tool 26.
  • the fact that the three drive devices 19, 20 and 21 consist of hydraulic cylinders pivotably mounted on the device frame 28 gives the bending device high performance, great flexibility in the control of the movement sequences and a simple structural design.
  • rocker shaft 23 which can be carried by the drive device 19 for essentially horizontal tool movements, is mounted in pivotable support brackets 29.
  • support lugs 29, which in turn are pivotably mounted with their lower ends on the device frame 28, the swing arm axis 23 is guided on a circular arc deviating from the horizontal.
  • the two drive devices 20 and 21 are designed for essentially vertical tool movements on very different maximum paths. Since only the upper cold stamp 12 can be lifted from the two holding stamps 11 and 12, the larger maximum path is assigned to the upper bending tool 24.
  • two coaxial hydraulic cylinders are provided as the drive device 20 articulated on the upper jaw 16, one of which hydraulic cylinder the working area of the upper bending tool 24 and the other hydraulic cylinder of the individual space dimensioning for the fold 10 generated by the lower bending tool 26 of the workpiece 13 is assigned.
  • the space requirement of the edge profile consisting of the bevels 10, 14 and 15 is illustrated by the arcuate envelope 30.
  • the ventilation height of the upper holding die 12 corresponds approximately to the maximum path of the upper bending tool 24.
  • a hydraulic cylinder 31 is provided which is firmly supported on the device frame 28, the piston rod 32 of which at the lower end is provided by a coaxial countersunk screw 33 with the immersion space 34 for the hydraulic cylinder 31 and in turn the upper beam 35 carrying the holding stamp 12 is connected.
  • the holding punch 12 is designed as an interchangeable counter-tool and is secured in the upper cheek 35 against falling out by a sliding block 36 extending in both longitudinal directions.
  • the lower holding punch 11 which is also designed as an interchangeable counter-tool, is fixed on the lower cheek 37 which is firmly supported on the device frame 28.
  • the two bending tools 24 and 26 are also interchangeable for changing the length and cross-sectional area. They are screwed to the free end of the two separately pivotable jaws 16 and 17 secured by a fit.
  • the jaw depth of the rocker 18 corresponds approximately to the maximum travel of the upper bending tool 24. Since the mutually facing inner surfaces of the two jaws 16 and 17 in one of the mutual contact of the two bending tools 24 and 26 close position parallel to each other, the times before bending for turning on the bending tools 24 and 26 can be kept extremely short, as long as the step profile to be manufactured does not reach a greater height. On the other hand, the significance of the bending device described lies precisely in the free space for the production of particularly high edge profiles. However, this freedom is only provided when necessary. The two jaws 16 and 17 then form a considerable opening angle with their mutually facing inner surfaces, the influence of the drive device 20 exceeding the influence of the drive device 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP89114074A 1988-08-03 1989-07-29 Dispositif pour obtenir des rebords de tôle par pliage Expired - Lifetime EP0353680B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114074T ATE77270T1 (de) 1988-08-03 1989-07-29 Vorrichtung zum erzeugen von blechabkantungen durch biegen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826310A DE3826310A1 (de) 1988-08-03 1988-08-03 Vorrichtung zum erzeugen von blechabkantungen durch biegen
DE3826310 1988-08-03

Publications (3)

Publication Number Publication Date
EP0353680A2 true EP0353680A2 (fr) 1990-02-07
EP0353680A3 EP0353680A3 (en) 1990-11-28
EP0353680B1 EP0353680B1 (fr) 1992-06-17

Family

ID=6360125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114074A Expired - Lifetime EP0353680B1 (fr) 1988-08-03 1989-07-29 Dispositif pour obtenir des rebords de tôle par pliage

Country Status (3)

Country Link
EP (1) EP0353680B1 (fr)
AT (1) ATE77270T1 (fr)
DE (1) DE3826310A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490828A1 (fr) * 1990-12-07 1992-06-17 SAMAT S.r.l. Machine de pliage pour tôles
EP0567193A1 (fr) * 1992-04-22 1993-10-27 SAPIM AMADA S.p.A. Dispositif pour mouvoir les lames d'une presse pour plier des tôles
US5259231A (en) * 1989-10-26 1993-11-09 Reinhardt Maschinenbau Gmbh Process for the two-directional bending of sheet metal
ES2063658A2 (es) * 1992-09-21 1995-01-01 Goiti S Coop Ltda Maquina perfeccionada plegadora de chapa.
EP0995509A1 (fr) * 1998-10-19 2000-04-26 Paul Weinbrenner Maschinenbau GmbH & Co. KG Plieuse
US6516648B1 (en) * 1999-01-19 2003-02-11 Reinhardt Maschinenbau Gmbh Bending machine for flat material
EP1121996A3 (fr) * 2000-01-31 2003-07-02 Goiti, S.Coop Machine plieuse pour tôles métalliques
DE102019008118A1 (de) * 2019-11-21 2021-05-27 Wolfram Hochstrate Schwenkbiegemaschine insbesondere zum Gegenbiegen mit einer Duplex-Biegewange

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435719C1 (de) * 1994-10-06 1996-02-01 Daimler Benz Ag Vorrichtung zum Abkanten von Blechen
US5640809A (en) * 1995-03-29 1997-06-24 Iannelli; Anthony M. Rain gutter shield
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT363756B (de) * 1979-06-20 1981-08-25 Krems Huette Gmbh Biegemaschine
AT363757B (de) * 1980-04-24 1981-08-25 Voest Alpine Ag Vorrichtung zum abkanten von blechtafeln
AT372883B (de) * 1981-10-09 1983-11-25 Voest Alpine Ag Vorrichtung zum abkanten einer blechtafel
US4722214A (en) * 1985-03-12 1988-02-02 Murata Kikai Kabushiki Kaisha Split die for holding work during bending operation
DE3605815C2 (de) * 1986-02-22 1995-06-22 Weinbrenner Paul Maschbau Vorrichtung zum Biegebearbeiten von Blechtafeln

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259231A (en) * 1989-10-26 1993-11-09 Reinhardt Maschinenbau Gmbh Process for the two-directional bending of sheet metal
EP0490828A1 (fr) * 1990-12-07 1992-06-17 SAMAT S.r.l. Machine de pliage pour tôles
EP0567193A1 (fr) * 1992-04-22 1993-10-27 SAPIM AMADA S.p.A. Dispositif pour mouvoir les lames d'une presse pour plier des tôles
ES2063658A2 (es) * 1992-09-21 1995-01-01 Goiti S Coop Ltda Maquina perfeccionada plegadora de chapa.
EP0995509A1 (fr) * 1998-10-19 2000-04-26 Paul Weinbrenner Maschinenbau GmbH & Co. KG Plieuse
US6516648B1 (en) * 1999-01-19 2003-02-11 Reinhardt Maschinenbau Gmbh Bending machine for flat material
EP1121996A3 (fr) * 2000-01-31 2003-07-02 Goiti, S.Coop Machine plieuse pour tôles métalliques
ES2190298A1 (es) * 2000-01-31 2003-07-16 Goiti S Coop Maquina plegadora de chapas metalicas.
ES2190298B1 (es) * 2000-01-31 2004-10-16 Goiti, S.Coop Maquina plegadora de chapas metalicas.
DE102019008118A1 (de) * 2019-11-21 2021-05-27 Wolfram Hochstrate Schwenkbiegemaschine insbesondere zum Gegenbiegen mit einer Duplex-Biegewange
DE102019008118B4 (de) 2019-11-21 2022-09-15 Wolfram Hochstrate Schwenkbiegemaschine insbesondere zum Gegenbiegen mit einer Duplex-Biegewange

Also Published As

Publication number Publication date
EP0353680A3 (en) 1990-11-28
ATE77270T1 (de) 1992-07-15
EP0353680B1 (fr) 1992-06-17
DE3826310A1 (de) 1990-02-08
DE3826310C2 (fr) 1991-11-07

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