EP0911093B1 - Device for hemming sheet metal, especially bodywork in automobile construction - Google Patents

Device for hemming sheet metal, especially bodywork in automobile construction Download PDF

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Publication number
EP0911093B1
EP0911093B1 EP98118123A EP98118123A EP0911093B1 EP 0911093 B1 EP0911093 B1 EP 0911093B1 EP 98118123 A EP98118123 A EP 98118123A EP 98118123 A EP98118123 A EP 98118123A EP 0911093 B1 EP0911093 B1 EP 0911093B1
Authority
EP
European Patent Office
Prior art keywords
ram
hemming
base rack
compressed
sheet metals
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 - Lifetime
Application number
EP98118123A
Other languages
German (de)
French (fr)
Other versions
EP0911093A1 (en
Inventor
Josef Maier
Andreas Schmidt
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.)
ThyssenKrupp Technologies AG
Original Assignee
ThyssenKrupp Technologies 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
Application filed by ThyssenKrupp Technologies AG filed Critical ThyssenKrupp Technologies AG
Publication of EP0911093A1 publication Critical patent/EP0911093A1/en
Application granted granted Critical
Publication of EP0911093B1 publication Critical patent/EP0911093B1/en
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
    • B21D5/16—Folding; Pleating
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors

Definitions

  • the invention relates to a device for folding sheet metal, in particular body panels in the automotive industry, in one Base frame a ram with a folding bed on top of the sheets to be folded presses against the stationary folding tools.
  • the invention is therefore based on the task of driving the plunger in to improve the way that the construction is simplified.
  • the proposal according to the invention is used as a tappet drive
  • Air cushions are used to increase the working stroke and the force to fold the To be able to apply sheets pneumatically.
  • the air cushion is between Base frame and ram arranged. It can in particular in the Base frame and at least the entire base of the ram take in.
  • the force is advantageously above a chamfer arranged on the circumference of the ram is initiated, so that this is greatly simplified in its outer shape and dimensions.
  • the ram needs only small stiffening ribs, since the folding force is no longer from the center to the Edge area of the plunger must be initiated.
  • it can Compressed air cushion in a standardized substructure of the base frame of the Folding device can be accommodated.
  • the air cushion is not only through the embedding in the base frame, but also fixed via the plunger and over several circumferential guide rails in the direction of movement of the ram in the base frame.
  • Adjustment of the fold adjustable stops in appropriate Recesses of the base frame can be arranged.
  • To connect one Compressed air hose to the compressed air cushion can also be in the base plate a corresponding passage opening of the plunger, so that the compressed air hose not through the base frame, but from above the preferably centrally arranged passage opening is fed.
  • Fig. 1 the compressed air cushion 3 is shown, which is in the base frame 2 and which is fixed to the plunger 1 with the compressed air hose 5.
  • the plunger 1 is over guided several short guide rails 8 in the base frame 2.
  • the stops 4 serve to limit the fold stroke and can be used to adjust the fold be tuned or adjusted.
  • the force is about one at the scope of the Ram 1 arranged bend 10 initiated.
  • Fig. 1.2 is an embodiment according to the prior art for explanation Hydraulic cylinder 6 shown. Here are to guide the plunger 11 in Base frame 12 long guide strips 8 used. To limit the Different folding positions are also pins 7 and Tie rod 9 applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Air Bags (AREA)
  • Seal Device For Vehicle (AREA)
  • Seats For Vehicles (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

A device for hemming of sheet metals, particularly of coachwork sheet metals in automobile manufacture, wherein a driven ram with superposed hemming bed arranged in a base rack presses the sheet metals to be hemmed against stationary hemming tools. The working stroke and the force for hemming of sheet metals is pneumatically transmitted to ram by the aid of a compressed-air cushion arranged between base rack and ram.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Falzen von Blechen, insbesondere Karosserieblechen im Automobilbau, wobei in einem Grundgestell ein Stößel mit aufliegendem Falzbett die zu falzenden Bleche gegen die feststehenden Falzwerkzeuge presst.The invention relates to a device for folding sheet metal, in particular body panels in the automotive industry, in one Base frame a ram with a folding bed on top of the sheets to be folded presses against the stationary folding tools.

Bei einer herkömmlichen Falzvorrichtung nach dem Stand der Technik werden Falzhub und die benötigte Falzkraft durch einen zentral unter dem Stößel liegenden Hydraulikzylinder aufgebracht. Der Stößel befördert mit dem aufliegenden Falzbett die zu falzenden Bleche gegen die feststehenden Vor- bzw. Fertigfalzwerkzeuge, die an verschieblichen oder schwenkbaren Einrichtungen befestigt sind (vgl. US 51 50 508 A und DE 43 30 683 C2 nächstliegender Stand der Technik). Durch die zentrale Krafteinleitung in der Mitte des Stößels muss der Stößel insgesamt sehr stabil ausgeführt sein, um die Falzkraft von der Mitte insbesondere an den Randbereich des Stößels weiterzuleiten.In a conventional folding device according to the prior art Folding stroke and the required folding force through a centrally under the ram lying hydraulic cylinder applied. The plunger moves with the the sheet to be folded against the fixed frame or finished folding tools that can be moved or swiveled Devices are attached (cf. US 51 50 508 A and DE 43 30 683 C2 closest prior art). By The central force application in the middle of the tappet must be the tappet overall be made very stable to the folding force from the center in particular to the Forward the edge area of the plunger.

Der Erfindung liegt daher die Aufgabe zugrunde, den Antrieb für den Stößel in der Weise zu verbessern, dass die Konstruktion vereinfacht wird.The invention is therefore based on the task of driving the plunger in to improve the way that the construction is simplified.

Die Lösung dieser Aufgabe ist im Patentanspruch 1 wiedergegeben. Die Unteransprüche 2 bis 7 enthalten sinnvolle Ausführungen dazu.The solution to this problem is given in claim 1. The Subclaims 2 to 7 contain useful explanations.

Durch den erfindungsgemäßen Vorschlag wird als Stößelantrieb ein Druckluftkissen eingesetzt, um den Arbeitshub und die Kraft zum Falzen der Bleche pneumatisch aufbringen zu können. Das Druckluftkissen ist zwischen Grundgestell und Stößel angeordnet. Es kann insbesondere in dem Grundgestell liegen und mindestens die gesamte Grundfläche des Stößels einnehmen. The proposal according to the invention is used as a tappet drive Air cushions are used to increase the working stroke and the force to fold the To be able to apply sheets pneumatically. The air cushion is between Base frame and ram arranged. It can in particular in the Base frame and at least the entire base of the ram take in.

Durch die Verwendung des Druckluftkissens ist vorteilhafterweise die Kraft über eine am Umfang des Stößels angeordnete Abkantung eingeleitet, sodass dieser in seiner äußeren Form und in den Abmessungen stark vereinfacht ist. Im Gegensatz zum zentral angreifenden Hydraulikzylinder benötigt der Stößel nur kleine Versteifungsrippen, da die Falzkraft nicht mehr von der Mitte zum Randbereich des Stößels eingeleitet werden muss. Des weiteren kann das Druckluftkissen in einem standardisierten Unterbau des Grundgestells der Falzvorrichtung untergebracht werden. Das Druckluftkissen ist nicht nur durch die Einbettung in das Grundgestell, sondern auch über den Stößel fixiert und wird über mehrere am Umfang verteilte Führungsleisten in Bewegungsrichtung des Stößels im Grundgestell geführt. Zur Begrenzung des Falzhubes können am Umfang des Stößels nach außen überstehende gegebenenfalls zur Einstellung der Falzung einstellbare Anschläge in entsprechenden Aussparungen des Grundgestells angeordnet sein. Zum Anschluss eines Druckluftschlauches an das Druckluftkissen kann außerdem in der Grundplatte des Stößels eine entsprechende Durchtrittsöffnung angeordnet sein, sodass der Druckluftschlauch nicht durch das Grundgestell, sondern von oben durch die vorzugsweise zentral angeordnete Durchtrittsöffnung zugeführt wird.By using the compressed air cushion, the force is advantageously above a chamfer arranged on the circumference of the ram is initiated, so that this is greatly simplified in its outer shape and dimensions. In contrast to the centrally acting hydraulic cylinder, the ram needs only small stiffening ribs, since the folding force is no longer from the center to the Edge area of the plunger must be initiated. Furthermore, it can Compressed air cushion in a standardized substructure of the base frame of the Folding device can be accommodated. The air cushion is not only through the embedding in the base frame, but also fixed via the plunger and over several circumferential guide rails in the direction of movement of the ram in the base frame. To limit the folding stroke can on the circumference of the plunger projecting outwards if necessary Adjustment of the fold adjustable stops in appropriate Recesses of the base frame can be arranged. To connect one Compressed air hose to the compressed air cushion can also be in the base plate a corresponding passage opening of the plunger, so that the compressed air hose not through the base frame, but from above the preferably centrally arranged passage opening is fed.

Die Erfindung wird anhand der beigefügten Figuren 1.1 und 1.2 beispielsweise näher erläutert. Es zeigen:

Fig. 1.1
ein Druckluftkissen 3 mit Stößel 1 und Grundgestell 2 nach einem Ausführungsbeispiel der erfindungsgemäßen Vorrichtung
Fig. 1.2
einen Hydraulikzylinder 6 mit Stößel 11 im Grundgestell 12 in herkömmlicher Ausführung nach dem Stand der Technik.
The invention is explained in more detail, for example, with the aid of the attached FIGS. 1.1 and 1.2. Show it:
Fig. 1.1
a compressed air cushion 3 with tappet 1 and base frame 2 according to an embodiment of the device according to the invention
Fig. 1.2
a hydraulic cylinder 6 with plunger 11 in the base frame 12 in a conventional design according to the prior art.

In Fig. 1 ist das Druckluftkissen 3 dargestellt, das im Grundgestell 2 liegt und das mit dem Druckluftschlauch 5 am Stößel 1 fixiert ist. Der Stößel 1 wird über mehrere kurze Führungsleisten 8 im Grundgestell 2 geführt. Die Anschläge 4 dienen zur Begrenzung des Falzhubes und können zur Einstellung der Falzung abgestimmt bzw. eingestellt werden. Die Kraft wird über eine am Umfang des Stößels 1 angeordnete Abkantung 10 eingeleitet.In Fig. 1, the compressed air cushion 3 is shown, which is in the base frame 2 and which is fixed to the plunger 1 with the compressed air hose 5. The plunger 1 is over guided several short guide rails 8 in the base frame 2. The stops 4 serve to limit the fold stroke and can be used to adjust the fold be tuned or adjusted. The force is about one at the scope of the Ram 1 arranged bend 10 initiated.

In Fig. 1.2 ist zur Erläuterung eine Ausführung nach dem Stand der Technik mit Hydraulikzylinder 6 dargestellt. Hier werden zur Führung des Stößels 11 im Grundgestell 12 lange Führungsleisten 8 eingesetzt. Zur Begrenzung der verschiedenen Falzpositionen werden darüber hinaus Abstecker 7 und Zuganker 9 angewandt. In Fig. 1.2 is an embodiment according to the prior art for explanation Hydraulic cylinder 6 shown. Here are to guide the plunger 11 in Base frame 12 long guide strips 8 used. To limit the Different folding positions are also pins 7 and Tie rod 9 applied.

Bezugszeichenliste:Reference symbol list:

11
StößelPestle
22nd
GrundgestellBase frame
33rd
DruckluftkissenCompressed air cushion
44th
Anschlagattack
55
DruckluftschlauchCompressed air hose
66
HydraulikzylinderHydraulic cylinder
77
AbsteckerStake
88th
FührungsleistenGuide rails
99
ZugankerTie rod
1010th
AbkantungFolding
1111
StößelPestle
1212th
GrundgestellBase frame

Claims (7)

  1. Device for hemming of sheet metals, particularly of coachwork sheet metals in automobile manufacture, wherein a driven ram with superposed hemming bed arranged in a base rack presses the sheet metals to be hemmed against stationary hemming tools, characterized in that the working stroke and the force for hemming of sheet metals is pneumatically transmitted to ram (1) by the aid of a compressed-air cushion (3) arranged between base rack (2) and ram (1).
  2. A device according to Claim 1, characterized in that the hemming force is more favorably introduced via a folded edge (10) located at the periphery of the ram (1).
  3. A device according to Claims 1 or 2, characterized in that the compressed-air cushion (3) is located in the base rack (2) and covers at least the whole ground area of the ram (1).
  4. A device according to one of Claims 1 to 3, characterized in that the compressed-air cushion (3) is fixed to the ram (1) at its periphery.
  5. A device according to one of Claims 1 to 4, characterized in that the ram (1) is conducted via several short guide strips (8) arranged at it periphery in base rack (2).
  6. A device according to one of Claims 1 to 5, characterized in that possibly adjustable arrest stops (4) projecting outwardly at the periphery of the ram (1) are arranged in appropriate recesses of the base rack (2) in order to confine the hemming stroke.
  7. A device according to one of Claims 1 to 6, characterized in that a passage port is arranged in the base rack (2) of the ram (1) so that a compressed-air hose (5) can be connected to the compressed-air cushion (1).
EP98118123A 1997-10-25 1998-09-24 Device for hemming sheet metal, especially bodywork in automobile construction Expired - Lifetime EP0911093B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19747291A DE19747291C1 (en) 1997-10-25 1997-10-25 Folder for motor vehicle body panels
DE19747291 1997-10-25

Publications (2)

Publication Number Publication Date
EP0911093A1 EP0911093A1 (en) 1999-04-28
EP0911093B1 true EP0911093B1 (en) 2001-11-14

Family

ID=7846685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118123A Expired - Lifetime EP0911093B1 (en) 1997-10-25 1998-09-24 Device for hemming sheet metal, especially bodywork in automobile construction

Country Status (6)

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US (1) US6029493A (en)
EP (1) EP0911093B1 (en)
AT (1) ATE208668T1 (en)
BR (1) BR9804735A (en)
DE (2) DE19747291C1 (en)
ES (1) ES2166582T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ295012B6 (en) * 1999-08-13 2005-05-18 Thyssenkrupp Technologies Ag Device for actuating a tappet in a lifting or clamping device, especially for folding sheet metals in car manufacture
EP1702692B1 (en) * 1999-11-25 2008-03-05 Ford-Werke GmbH Hemming device
FI110491B (en) * 2000-09-26 2003-02-14 Rondeco Oy Disc Handling Equipment
US6487888B1 (en) 2000-10-05 2002-12-03 Valiant Corporation Hemming machine
US6508099B1 (en) 2000-10-05 2003-01-21 Valiant Corporation Hemming machine
US6578401B2 (en) 2001-09-28 2003-06-17 Valiant Corporation Hemming machine
US6959474B2 (en) 2002-08-29 2005-11-01 Campian Jonathon R Nest and hold station for the joining of sheet materials
EP2689865B1 (en) 2012-07-27 2016-09-14 FFT Produktionssysteme GmbH & Co. KG Hemming press

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1405799A (en) * 1920-10-04 1922-02-07 Paul Stephen Adjustable guide for hammers
US2294676A (en) * 1940-03-25 1942-09-01 Hydraulic Dev Corp Inc Metal stretching press
DE1155414B (en) * 1959-09-15 1963-10-10 British Fed Welder And Machine Folding device
FR1322218A (en) * 1962-02-12 1963-03-29 Fr D Etudes Et De Realisation Machine for assembling sheet metal parts by crimping, in particular stampings with a polygonal contour
US3190215A (en) * 1964-05-11 1965-06-22 Reginald C Howard Fluid actuated press
FR1445675A (en) * 1965-06-02 1966-07-15 Chausson Usines Sa Machine for crimping the edges of sheet metal parts to be assembled
CH677620A5 (en) * 1988-11-11 1991-06-14 Matec Holding
US5150508A (en) * 1991-06-28 1992-09-29 E. R. St. Denis & Sons, Limited Hemming machine and method
US5454261A (en) * 1993-06-17 1995-10-03 Campian; Jon R. Hemming machine and method of operation
DE4330683C2 (en) * 1993-09-10 1995-07-27 Audi Ag Folding device

Also Published As

Publication number Publication date
BR9804735A (en) 1999-11-09
DE59802132D1 (en) 2001-12-20
DE19747291C1 (en) 1999-01-21
ES2166582T3 (en) 2002-04-16
US6029493A (en) 2000-02-29
ATE208668T1 (en) 2001-11-15
EP0911093A1 (en) 1999-04-28

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