EP1377395A1 - Machine de pliage, en particulier presse a estamper ou a plier, pourvue d'un outil inferieur reglable - Google Patents

Machine de pliage, en particulier presse a estamper ou a plier, pourvue d'un outil inferieur reglable

Info

Publication number
EP1377395A1
EP1377395A1 EP02792863A EP02792863A EP1377395A1 EP 1377395 A1 EP1377395 A1 EP 1377395A1 EP 02792863 A EP02792863 A EP 02792863A EP 02792863 A EP02792863 A EP 02792863A EP 1377395 A1 EP1377395 A1 EP 1377395A1
Authority
EP
European Patent Office
Prior art keywords
lower tool
stop
bending machine
drive
holder
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
EP02792863A
Other languages
German (de)
English (en)
Other versions
EP1377395B1 (fr
Inventor
Gerald Koch
Thomas Gerber
Thomas Fehrenbach
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.)
EHT Werkzeugmaschinen GmbH
Original Assignee
EHT Werkzeugmaschinen GmbH
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=7710530&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1377395(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EHT Werkzeugmaschinen GmbH filed Critical EHT Werkzeugmaschinen GmbH
Publication of EP1377395A1 publication Critical patent/EP1377395A1/fr
Application granted granted Critical
Publication of EP1377395B1 publication Critical patent/EP1377395B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means

Definitions

  • Bending machine in particular die or press brake, with an adjustable lower tool
  • the invention relates to a bending machine, in particular a die or a press brake, with a lower tool and with an upper tool that is vertically adjustable relative to this, one of the tools having one or more parallel incisions or notches, and a workpiece in such an incision or in such a way due to the movement of the upper tool Notch is pressed and thereby bent, the lower tool being adjustable transversely to its longitudinal extent or transversely to the bending line and wherein the bending machine has at least one stop for the workpiece which is arranged in the region of the plane of the lower tool and is adjustable in its distance from this lower tool.
  • Bending machines of the type mentioned above are known in many ways and an example of a bending machine which works according to the principle mentioned is described in DE 198 40 563 C1.
  • the lower tool is often designed as a die with a plurality of incisions or notches — possibly with movable boundaries — in order to be able to take into account different material thicknesses and / or different bending angles.
  • a notch on the lower tool is used for pre-bending and an edge of the lower tool that is parallel to the notch (s) is used for pressing or for folding.
  • it is known to provide several work stations in a bending machine which are provided with the same upper tool or with different upper tools and have different lower tools which have notches which are arranged differently from the upper tool or tools and / or have deformation edges.
  • the lower tool or its holder is adjustable relative to the upper tool or tools transversely to the longitudinal extent of the bending lines or notches.
  • At least two spaced drive units are required for transverse adjustment of the lower tool in order to allow an exact parallel displacement.
  • the invention has for its object to reduce the mechanical effort for transverse displacement or transverse adjustment of the lower tool.
  • the bending machine defined at the outset is characterized in that the lower tool can be directly or indirectly detachably coupled to the adjusting drive for the adjustable stop, with which the distance of the stop from the lower tool can be adjusted when the coupling is released.
  • the drive for the transverse adjustment of the stop thus has an additional function in that it is also used to adjust the lower tool across the bending line if necessary.
  • the drive components of the existing stop system for the adjustment of the lower tool can be used.
  • the direct or indirect connection of the lower tool to the adjustment drive for the stop can take place at different parts and locations and in different ways.
  • a possible embodiment of the invention can provide that the direct or indirect coupling between the lower tool and the drive for the stop can be produced by an element which can be brought into thrust contact with the stop.
  • a releasable coupling is provided, which is designed to act in both opposite directions of displacement of the lower tool.
  • the drive of the stop can be moved in any direction after the aforementioned coupling has been produced in order to bring about opposite adjustment movements on the lower tool.
  • a form-fit coupling for releasably coupling the lower tool or its holder to the drive for the attachment can be used for defined adjustment movements. blow be provided.
  • the stop finger of the adjustable stop itself can serve as coupling parts and can be detachably engaged by means of a magnet, pin, projection or the like on the lower tool or - preferably - on its holder or on a counter opening arranged there.
  • the lower tool can have a plurality of parallel incisions and / or notches, since these can all be brought into the use position in a simple manner.
  • a specific embodiment of the invention can provide that, in particular, fixed to the lower tool or its holder transverse to its longitudinal extension, in particular at right angles to the bending line and in particular approximately horizontally extending rods or strips, to which the drive for the stop or with it Drive connected part can be detachably coupled, in particular clamped. If the coupling or clamping is released, the drive for the stop can adjust it transversely to the bending line. However, if the lower tool is to be adjusted, only the clamps on the corresponding rods need to be activated, after which actuation of the drive in turn adjusts these clamps, which then take the corresponding rods or strips and thus also the lower tool with them.
  • the clamp for gripping a rod or bar connected to the lower tool or its holder can also grip around this with a guide opening or in the form of pliers in the released position and can be displaceable relative to the rod or bar in the released position.
  • this clamp or coupling is arranged on a part of the stop, relative to which the stop itself can be height-adjustable, for example, so that the functions of the stop itself remain independent of the temporary coupling with the lower tool.
  • the rods or strips engaging on the lower tool or its holder can engage in a second clamping device, to which they can be adjusted relatively in the open position of this second clamping device, and which are closed when the tool is in a preselected position and when the tool is adjusted using the first clamp or Clamping device are open.
  • a second clamping device With a second clamping device, a set position of the lower tool can thus be provided in a simple manner and in an attacking manner on the same connecting means, namely the rods or strips, which requires little mechanical effort and a small space requirement.
  • a swivel arm with a projection or with a recess and a recess or a projection for releasable connection to the swivel arm can be provided on the one of the two parts as a connecting means for releasably coupling the lower tool or its holder with the drive of the stop ,
  • this copper Plung expediently provided on a part of the drive of the stop, which itself can only be adjusted transversely to the lower tool, while other adjustment movements of the stop, for example height adjustments relative to this part, can be carried out.
  • the swivel arm can be swiveled up and down on the drive for the stop in a particularly vertical plane and it can be swiveled with a pin into a perforation on a counter bar which is connected to the lower tool or its holder, or the swivel arm can have a perforation which, in the use position, releasably engages over a projection or pin on a counterpart connected to the lower tool or its holder.
  • FIG. 1 shows a diagrammatic illustration of a bending machine with a holder for the lower tool or tools which can be adjusted transversely to the longitudinal extent
  • FIG. 2 shows, on an enlarged scale, a diagrammatic representation of the holder of the lower tool, the adjustable stop and a device for an adjusting movement of the lower tool transverse to its longitudinal extent
  • FIG. 3 shows a side view of a slide for adjusting the stop transversely to the bending line and to the lower tool, which carries an assembly for adjusting the stop also parallel to the bending line and a coupling for connecting to a rod, which is arranged at right angles to the course of the lower tool and connected to it
  • FIG. 4 shows an arrangement corresponding to FIG. 3, where it is indicated that the rod engaging on the holder for the lower tool acts at a different location than according to FIG. 3 and may also be cranked or deflected in some areas,
  • FIG. 5 shows a diagram of the arrangement according to FIG. 3 in relation to a part of the machine frame
  • 6 shows a representation corresponding to FIG. 3, namely a side view of a modified embodiment, in which the slide of the adjusting device, which is adjustable transversely to the bending line, for the stop via a swivel lever with one on the
  • Bracket for the lower tool arranged counterpart can be coupled, as well
  • FIG. 7 shows a diagrammatic representation of the arrangement according to FIG. 6.
  • a bending machine designated as a whole by 1, is designed as a die or press brake. It has a lower tool 2 according to FIG. 1, which may consist of several sections, and an upper tool that can be adjusted from top to bottom
  • the lower tool or tools 2 have one or more, in these exemplary embodiments, two parallel incisions or notches 4, and the movement of the upper tool 3 allows a workpiece (not shown) to be inserted into such a notch 4 located exactly below the upper tool 3 pressed and thereby bent.
  • a holder 5 for the lower tool 2 can be adjusted in a manner to be described, transversely to the longitudinal extent of the lower tool 2 and transversely to the bending line to adapt to the parallel notches 4, so that one or the other notch can be selected
  • the lower tools 2 even have notches 4 on both sides and can also be used rotated by 180 ° about their longitudinal axis.
  • the bending machine 1 also has one in the area of Level of the lower tool 2 arranged and its distance from this lower tool 2 and also adjustable in height 6 stop for the workpiece, not shown.
  • This stop 6 can be seen both in FIG. 2 and in FIGS. 1, 3 and 6.
  • a slide 7 is provided, the possible back and forth movement of which is shown in FIGS. 3, 5, 6 and 7 is represented by a double arrow.
  • the lower tool 2 can be directly or indirectly detachably coupled to the adjusting drive and thereby the slide 7 for the adjustable stop 6, so that the lower tool 2 can be used with the aid of this drive for the stop 6, that is to say with the help of the slide 7 can be adjusted transversely to itself, while when the clutch is released with this adjusting drive and the slide 7, the distance of the stop 6 from the lower tool 2 is adjustable in a known manner.
  • This adjusting drive according to FIGS. 3, 5, 6 and 7 also includes a spindle 8 or another drive for linear movements, with which the carriage 7 can be moved back and forth.
  • connection or coupling between the lower tool 2 or a holder 5 and the drive 7 for the stop 6 could be made by push contacts, for which purpose a corresponding element is provided with the stop 6 or its drive 7.
  • a releasable coupling to be described in more detail is provided, which is effective in both mutually opposite displacement directions according to the double arrows in FIGS. 3, 5, 6 and 7.
  • Each has a positive or non-positive connection or coupling for releasably coupling the lower tool 2 or its holder 5 to the drive 7 for the attachment blow 6 provided.
  • the exemplary embodiments show lower tools 2, each with two parallel incisions or notches 4, but more and / or differently shaped incisions could also be provided, since the adjustable drive or slide 7 for the stop 6 is also infinitely adjustable.
  • the lower tool 2 is attached indirectly via its holder 5 transversely to its longitudinal extent and at the same time at right angles to the bending line and approximately horizontally extending rods 8, on which the drive or slide 7 for the stop 6 can be detachably coupled, can be clamped in the exemplary embodiment.
  • the clamp 9 for gripping the rod 7a which is connected directly or indirectly to the lower tool 2 or its holder 5.
  • the clamp 9 encompasses this rod 7a with a guide opening 10, through which the rod 7a also extends in the released position, so that when the clamp 9 is open, the carriage 7 and the stop 6 can be displaced relative to the rod 7a.
  • the rods 7a are displaceable or adjustable relative to these second clamping devices 11 when these clamping devices 11 are open. If the lower tool 2 has received a desired position, this second clamping device 11 can be closed in order to fix this position.
  • the first clamp or clamping device 9 can then be opened in order to be able to adjust the stops 6 with respect to their distance from the lower tool 2 when the lower tool 2 is fixed.
  • the terminal 9 and the clamping device 11 are only schematic indicated indicated, that is, the actual jaws or clamping elements are arranged inside the associated housing.
  • the clamp 9 connected to the drive or slide 7 is spatially arranged such that this slide 7 is located next to the rod 7a and a guide 12 can be moved up and down to this slide 7, which is the actual bearing 13 of the stop 6 carries, on which the stop 6 is also displaceable in the longitudinal direction.
  • the stamp 12 also allows the known height adjustment of the stop 6 independently of the fact that the drive 7 for the stop 6 can also be used to adjust the lower tool 2.
  • FIG. 6 and 7 is a connecting means for releasably coupling the lower tool 2 or its holder 5 with the drive 7 of the stop 6 on one of the two parts, namely on the drive 7, a swivel arm 14 with a projection 15 and on the other part , namely a counterpart 16 connected directly or indirectly to the lower tool 2, a recess 17 is provided for releasable connection to the swivel arm 14, the projection 15 of the swivel arm 14 fitting into the recess 17.
  • a recess is provided on the swivel arm 14 and a matching projection is provided on the counterpart 16 and / or that the swivel arm 14 is arranged directly or indirectly on the holder 5 and the counterpart 16 on the drive 7.
  • the swivel arm 14 is provided on the drive 7 for the back and forth adjustment of the stop 6 transversely to the bending line in an approximately vertical plane and can be swiveled up and down with a projection 15 designed as a pin into a matching recess 17 the as a Genplatte trained counterpart 16 pivoted, the two positions of the pivot arm 14 are shown with different lines.
  • the coupling position with an approximately horizontal arrangement of the swivel arm 14 is shown with solid lines and the disengaged position with broken lines.
  • the bending machine 1 uses components of the existing stop system, namely a drive part or slide 7, which can be directly or indirectly detachably coupled to the lower tool 2.
  • this existing axis of the stop system can also be used for the adjustment of the tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Press Drives And Press Lines (AREA)
EP02792863A 2001-12-21 2002-12-03 Machine de pliage, en particulier presse a estamper ou a plier, pourvue d'un outil inferieur reglable Expired - Lifetime EP1377395B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10163498 2001-12-21
DE10163498A DE10163498C1 (de) 2001-12-21 2001-12-21 Biegemaschine, insbesondere Gesenk- oder Abkantpresse, mit einem verstellbaren Unterwerkzeug
PCT/EP2002/013656 WO2003053605A1 (fr) 2001-12-21 2002-12-03 Machine de pliage, en particulier presse a estamper ou a plier, pourvue d'un outil inferieur reglable

Publications (2)

Publication Number Publication Date
EP1377395A1 true EP1377395A1 (fr) 2004-01-07
EP1377395B1 EP1377395B1 (fr) 2004-09-08

Family

ID=7710530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02792863A Expired - Lifetime EP1377395B1 (fr) 2001-12-21 2002-12-03 Machine de pliage, en particulier presse a estamper ou a plier, pourvue d'un outil inferieur reglable

Country Status (6)

Country Link
US (1) US7260974B2 (fr)
EP (1) EP1377395B1 (fr)
AT (1) ATE275448T1 (fr)
AU (1) AU2002358582A1 (fr)
DE (2) DE10163498C1 (fr)
WO (1) WO2003053605A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20110331A1 (it) * 2011-12-22 2013-06-23 Codatto Internat S P A Macchina industriale per la piegatura di elementi metallici piani
CA3034636A1 (fr) 2016-09-09 2018-03-15 Mate Precision Tooling, Inc. Systeme de mise en prise d'outil de presse-plieuse
AT519644B1 (de) * 2017-07-05 2018-09-15 Trumpf Maschinen Austria Gmbh & Co Kg Hinteranschlageinheit sowie damit ausgestattete Fertigungsanlage

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7139889U (de) 1972-02-17 Amada Co Ltd Hydraulische Abkantpresse
CH432437A (de) 1963-10-11 1967-03-31 Haemmerle Ag Biegebearbeitungseinrichtung
AT258674B (de) * 1963-10-11 1967-12-11 Haemmerle Ag Maschf Biegebearbeitungseinrichtung
US3812695A (en) 1970-05-25 1974-05-28 Hurco Mfg Co Inc Back gauge for press brake
US3675463A (en) * 1971-03-29 1972-07-11 Niagara Machine & Tool Works Shiftable press brake die
US3874205A (en) * 1974-02-19 1975-04-01 Hurco Mfg Co Inc Digitally controlled multiple depth stop and return stroke limit control for press brakes
JPS5456969A (en) 1977-10-14 1979-05-08 Komatsu Mfg Co Ltd Automatic metal mold exchanging apparatus of press brake
US4411150A (en) 1981-10-21 1983-10-25 Houdaille Industries, Inc. Backgauge structure
DE3745067C2 (de) * 1986-06-20 1997-03-20 Amada Co Biegepresse
DE3745026C2 (de) 1986-06-20 1997-03-20 Amada Co Biegepresse
DE8628989U1 (de) * 1986-10-30 1987-02-05 Ludwig Boschert Maschinen- und Apparatebau GmbH & Co KG, 79541 Lörrach Einrichtung zum Biegen oder Abkanten von Blechen
WO1992016318A1 (fr) 1991-03-22 1992-10-01 Amada Company, Limited Systeme pour travailler de la matiere en plaque
DE9315209U1 (de) * 1993-10-08 1995-02-16 Trumpf Gmbh & Co, 71254 Ditzingen Abkantpresse
JP3431049B2 (ja) 1995-04-27 2003-07-28 株式会社小松製作所 曲げ加工機
EP0919301B1 (fr) 1996-08-05 2003-06-18 Amada Company Limited Dispositif de butee arriere
DE19840563C1 (de) * 1998-09-05 1999-12-09 Eht Werkzeugmaschinen Gmbh Vorrichtung zum Gesenkbiegen, zum freien Biegen oder zum Präge-Biegen mit einer eine Kerbe aufweisenden Matrize und mit einem Stempel
WO2000041824A1 (fr) 1999-01-13 2000-07-20 Amada Company, Limited Systeme de presse a cintrer

Non-Patent Citations (1)

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Title
See references of WO03053605A1 *

Also Published As

Publication number Publication date
US20050050937A1 (en) 2005-03-10
WO2003053605A1 (fr) 2003-07-03
AU2002358582A1 (en) 2003-07-09
ATE275448T1 (de) 2004-09-15
DE10163498C1 (de) 2003-02-20
US7260974B2 (en) 2007-08-28
EP1377395B1 (fr) 2004-09-08
DE50200969D1 (de) 2004-10-14

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