EP0548623B1 - Device for taking out two piece-parts from the final step in a transfer-pressline - Google Patents

Device for taking out two piece-parts from the final step in a transfer-pressline Download PDF

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Publication number
EP0548623B1
EP0548623B1 EP92120642A EP92120642A EP0548623B1 EP 0548623 B1 EP0548623 B1 EP 0548623B1 EP 92120642 A EP92120642 A EP 92120642A EP 92120642 A EP92120642 A EP 92120642A EP 0548623 B1 EP0548623 B1 EP 0548623B1
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EP
European Patent Office
Prior art keywords
press
gripper rails
rails
sleeve
sheet metal
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
EP92120642A
Other languages
German (de)
French (fr)
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EP0548623A1 (en
Inventor
Sieghard Müller
Gerald Mikusch
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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Filing date
Publication date
Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0548623A1 publication Critical patent/EP0548623A1/en
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Publication of EP0548623B1 publication Critical patent/EP0548623B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars

Definitions

  • the invention relates to a device for removing double parts from the last processing stage of a press.
  • the removal device has two gripper rails which can be moved in three axes for the transfer movement of sheet metal parts and the return movement in the processing stages of the press. If double parts are to be removed from the last processing stage of the press, they must be supported in the areas located away from the gripper rail and located in the center of the gripper rails.
  • DE 37 12 838 C2 provides a traverse for this purpose, which is movably mounted in guides on the gripper rails transversely to the transport direction. Part support is arranged on the crossbeam. The traverse is held in the center of the outside guides to the gripper rails. With a lower gripper rail basic setting, e.g. for smaller sheet metal parts, the crossbeam extends beyond the gripper rails during the entire service life.
  • the solution according to claim 1 uses frame-fixed guide means for the central support layer of the support element.
  • the solution according to claim 2 provides a guide bar carried with the gripper rails and is therefore independent of other frame or stationary guide means.
  • the solution according to claim 3 dispenses entirely with guide means for the support elements.
  • FIG. 1 shows the last processing stage of a press 1, which is only indicated in the drawing, with the press stands 16.
  • the processing stage essentially has a press ram 3 moved up and down by the press drive with the upper tool part 4 and a lower tool part 5 on the press table.
  • Between the press stands 16 extend along the direction of travel 23 gripper rails 6, 7 for the transfer movement of sheet metal parts 11 machined in the press.
  • the gripper rails 6, 7 have gripping tools in a known manner for gripping the sheet metal parts 11 in their edge regions near the gripper rail.
  • a support device is positioned at 15 for supporting the sheet metal parts 11 in the areas between the gripper rails 6, 7, far from the gripper tools on the gripper rails.
  • the support takes place via support elements 12, 13 which are moved with the gripper rails by means of an attachment 21.
  • the attachment 21 is attached to a sleeve 20, which can be seen more clearly from FIG. 2.
  • an outer tube 18 is rigidly attached to one of the gripper rails 6, 7 and an inner tube 19 to the other of the gripper rails 6, 7 via holding plates 8, 9, if necessary.
  • the pipes 18, 19 are telescopically slidable.
  • the sleeve 20 is slidably mounted on one of the pipes or on both.
  • guide means are arranged between the sleeve 20 or, for example, the attachment 21 and a bracket 17 fixed to the frame, which can also be a stand part for the conveyor belt 14.
  • the tread 22 in Fig. 3 refers to such an embodiment.
  • the inner tube 19 dips more or less far into the outer tube 18.
  • the tubes can have a multi-profile shape, that is to say they have a polygonal design.
  • the sheet metal parts 11 can be lifted out of the lower tool part 5 to such an extent that an additional movement of the support elements 12, 13 in the vertical can be unnecessary.
  • the tubes 18, 19 are moved into the position indicated by 10, the sheet metal parts 11 can be deposited on the front, left region of the conveyor belt 14.
  • the takeover or transfer of the sheet metal parts can be carried out by drivers on the conveyor belt 14 or by an additional movement of the support elements 12, 13 in the vertical.
  • FIG. 4 shows a second example with gripper rails 6, 7 movable between the stands 16 of the press, a sheet metal part 11 which was separated into two individual sheet metal parts 11 ′, 11 ′′ in processing stage 2, and a support device 15.
  • the support device 15 15 has the from Fig. 1 and 2 known tubes, outer tube 18 and inner tube 19, which are rigidly attached to the gripper rails 6, 7 and can be telescopically pushed into one another in the area of the sleeve 20.
  • an attachment 21 is fastened in the manner of a carrier for the support elements 12, 13.
  • a guide bar 27 is also rigidly attached, the other end is slidably mounted in a guide rail 24 in the direction of the press run 23.
  • the guide rail 24 is always held in the center of the gripper rails 6, 7 by a parallel linkage from the parallel rods 25.
  • the parallel rods 25 are mounted in pivot bearings 26 on the gripper rails 6, 7 and the guide rail 24.
  • FIG. 5 shows a bearing point 26 according to the section line V - V in FIG. 4 to show details.
  • the construction lines 25, 25 '' indicate the different inclination of the parallel rods 25 with different opening widths of the gripper rails 6, 7.
  • the gripper rails 6, 7 which can move between the press stands 16 of a press.
  • the gripper rails carry racks 28, 29 which are guided parallel to one another and are displaceable in guide bushes 31 fixed on the gripper rail.
  • the teeth of the racks 28, 29 face each other and engage in the teeth of a gear 30 which is rotatably mounted on the sleeve 20, so that the sleeve 20 remains in the middle of these when the gripper rails 6, 7 are opened and closed.
  • the sleeve 20 has the support elements 12, 13, 21 for supporting the from the sheet metal part 11 in the e.g. last processing stage 2 of the press by separating individual sheet metal parts 11 ', 11' '.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Automatic Assembly (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Entnahme von Doppelteilen aus der letzten Bearbeitungsstufe einer Presse. Die Entnahmevorrichtung weist zwei Greiferschienen auf, die in drei Achsen für die Umsetzbewegung von Blechteilen und die Rücklaufbewegung in den Bearbeitungsstufen der Presse bewegbar sind. Sollen Doppelteile aus der letzten Bearbeitungsstufe der Presse entnommen werden, müssen diese in dem greiferschienenfernen, mittig zu den Greiferschienen befindlichen Bereichen abgestützt werden.The invention relates to a device for removing double parts from the last processing stage of a press. The removal device has two gripper rails which can be moved in three axes for the transfer movement of sheet metal parts and the return movement in the processing stages of the press. If double parts are to be removed from the last processing stage of the press, they must be supported in the areas located away from the gripper rail and located in the center of the gripper rails.

Die DE 37 12 838 C2 sieht hierfür eine Traverse vor, die in Führungen an den Greiferschienen quer zur Transportrichtung beweglich gelagert ist. An der Traverse ist eine Teileunterstützung angeordnet. Die Traverse ist in außenliegenden Führungen mittig zu den Greiferschienen gehalten. Bei geringerer Greiferschienengrundeinstellung, z.B. für kleinere Blechteile, steht die Traverse während der gesamten Standzeit über die Greiferschienen hinaus.DE 37 12 838 C2 provides a traverse for this purpose, which is movably mounted in guides on the gripper rails transversely to the transport direction. Part support is arranged on the crossbeam. The traverse is held in the center of the outside guides to the gripper rails. With a lower gripper rail basic setting, e.g. for smaller sheet metal parts, the crossbeam extends beyond the gripper rails during the entire service life.

Demgegenüber ist es Aufgabe der Erfindung, die Abstützmittel insgesamt im Bereich zwischen den Greiferschienen unterzubringen. Diese Aufgabe ist gelöst durch die jeden der Patentansprüche kennzeichnenden Merkmale.In contrast, it is an object of the invention to accommodate the support means overall in the area between the gripper rails. This object is achieved by the features characterizing each of the claims.

Die Lösung nach Anspruch 1 verwendet hierbei gestellfeste Führungsmittel für die mittige Stützlage der Stützelement. Die Lösung nach Anspruch 2 sieht eine mit den Greiferschienen mitgeführte Führungsleiste vor und ist daher unabhängig von weiteren gestell- bzw. ortsfesten Führungsmitteln. Die Lösung nach Anspruch 3 verzichtet gänzlich auf Führungsmittel für die Stützelemente.The solution according to claim 1 uses frame-fixed guide means for the central support layer of the support element. The solution according to claim 2 provides a guide bar carried with the gripper rails and is therefore independent of other frame or stationary guide means. The solution according to claim 3 dispenses entirely with guide means for the support elements.

Anhand von Ausführungsbeispielen in der Zeichnung wird im folgenden die Erfindung beschrieben.The invention is described below using exemplary embodiments in the drawing.

Dabei zeigen:

Fig. 1
den Entnahmebereich für Doppelteile an einer Presse mit einer ersten Ausführungsform nach der Erfindung,
Fig. 2
eine Schnittansicht entsprechend der Schnittlinie II - II in Fig. 1,
Fig. 3
eine Einzelheit mit dem in Fig. 2 mit III angedeuteten Bereichen,
Fig. 4
eine Draufsicht auf den Entnahmebereich für Doppelteile entsprechend einer zweiten Ausführungsform,
Fig. 5
eine Schnittansicht gemäß dem Schnittverlauf V - V in Fig. 4 und
Fig. 6
eine Draufsicht auf den Entnahmebereich für Doppelteile entsprechend einer weiteren Ausführungsform.
Show:
Fig. 1
the removal area for double parts on a press with a first embodiment according to the invention,
Fig. 2
2 shows a sectional view corresponding to section line II-II in FIG. 1,
Fig. 3
a detail with the areas indicated by III in Fig. 2,
Fig. 4
a plan view of the removal area for double parts according to a second embodiment,
Fig. 5
a sectional view according to the section V - V in Fig. 4 and
Fig. 6
a plan view of the removal area for double parts according to another embodiment.

In Fig. 1 ist mit 2 die letzte Bearbeitungsstufe einer zeichnerisch nur angedeuteten Presse 1 mit den Pressenständern 16 dargestellt. Die Bearbeitungsstufe weist im wesentlichen einen vom Pressenantrieb auf- und abbewegten Pressenstößel 3 auf mit dem Werkzeugoberteil 4 sowie ein Werkzeugunterteil 5 auf dem Pressentisch. Zwischen den Pressenständern 16 erstrecken sich längs der Durchlaufrichtung 23 Greiferschienen 6, 7 für die Umsetzbewegung von in der Presse bearbeiteten Blechteilen 11. Die Greiferschienen 6, 7 weisen in bekannter Weise Greifzeuge auf zum Erfassen der Blechteile 11 in deren greiferschienennahen Randbereichen. Mit 15 ist insgesamt eine Stützeinrichtung positioniert zum Abstützen der Blechteile 11 in den Bereichen zwischen den Greiferschienen 6, 7, fern der Greifzeuge an den Greiferschienen. Die Abstützung erfolgt über Stützelemente 12, 13, die vermittels eines Aufsatzes 21 mit den Greiferschienen mitbewegt werden. Der Aufsatz 21 ist an einer Muffe 20 befestigt, die aus Fig. 2 deutlicher ersichtlich ist.In Fig. 1, 2 shows the last processing stage of a press 1, which is only indicated in the drawing, with the press stands 16. The processing stage essentially has a press ram 3 moved up and down by the press drive with the upper tool part 4 and a lower tool part 5 on the press table. Between the press stands 16 extend along the direction of travel 23 gripper rails 6, 7 for the transfer movement of sheet metal parts 11 machined in the press. The gripper rails 6, 7 have gripping tools in a known manner for gripping the sheet metal parts 11 in their edge regions near the gripper rail. A support device is positioned at 15 for supporting the sheet metal parts 11 in the areas between the gripper rails 6, 7, far from the gripper tools on the gripper rails. The support takes place via support elements 12, 13 which are moved with the gripper rails by means of an attachment 21. The attachment 21 is attached to a sleeve 20, which can be seen more clearly from FIG. 2.

Zum Lagern der Muffe 21 sind ein Außenrohr 18 an einer der Greiferschienen 6, 7 und ein Innenrohr 19 an der anderen der Greiferschienen 6, 7 über ggf. Haltebleche 8, 9 starr befestigt. Die Rohre 18, 19 sind teleskopartig ineinander schiebbar. Die Muffe 20 ist auf eines der Rohre oder auf beiden gleitbar aufgesetzt. Um die mittige Lage der Muffe 20 zwischen den Greiferschienen 6,7 zu erhalten, sind Führungsmittel zwischen der Muffe 20 oder beispielsweise dem Aufsatz 21 und einer gestellfesten Konsole 17, die zugleich Ständerteil für das Förderband 14 sein kann, angeordnet. Die Lauffläche 22 in Fig. 3 verweist auf eine derartige Ausführung. Je nach Grundweiteneinstellung bzw. Öffnungsweite der Greiferschienen 6, 7 taucht das Innenrohr 19 mehr oder weniger weit in das Außenrohr 18. Die Rohre können Mehrprofil-Form aufweisen, also mehreckig ausgeführt sein. Die Blechteile 11 können durch Aushebemittel aus dem Werkzeugunterteil 5 soweit abheben, daß sich eine zusätzliche Bewegung der Stützelemente 12, 13 in der Vertikalen erübrigen kann. Mit dem Mitbewegen der Rohre 18, 19 in die mit 10 angedeutete Position sind die Blechteile 11 auf dem vorderen, linken Bereich des Förderbandes 14 ablegbar. Die Übernahme bzw. Übergabe der Blechteile kann durch Mitnehmer am Förderband 14 oder durch eine zusätzliche Bewegung der Stützelemente 12, 13 in der Vertikalen erfolgen.To mount the sleeve 21, an outer tube 18 is rigidly attached to one of the gripper rails 6, 7 and an inner tube 19 to the other of the gripper rails 6, 7 via holding plates 8, 9, if necessary. The pipes 18, 19 are telescopically slidable. The sleeve 20 is slidably mounted on one of the pipes or on both. In order to maintain the central position of the sleeve 20 between the gripper rails 6, 7, guide means are arranged between the sleeve 20 or, for example, the attachment 21 and a bracket 17 fixed to the frame, which can also be a stand part for the conveyor belt 14. The tread 22 in Fig. 3 refers to such an embodiment. Depending on the basic width setting or opening width of the gripper rails 6, 7, the inner tube 19 dips more or less far into the outer tube 18. The tubes can have a multi-profile shape, that is to say they have a polygonal design. The sheet metal parts 11 can be lifted out of the lower tool part 5 to such an extent that an additional movement of the support elements 12, 13 in the vertical can be unnecessary. When the tubes 18, 19 are moved into the position indicated by 10, the sheet metal parts 11 can be deposited on the front, left region of the conveyor belt 14. The takeover or transfer of the sheet metal parts can be carried out by drivers on the conveyor belt 14 or by an additional movement of the support elements 12, 13 in the vertical.

Fig. 4 zeigt ein zweites Beispiel mit zwischen den Ständern 16 der Presse beweglichen Greiferschienen 6, 7, einem Blechteil 11, das in der Bearbeitungsstufe 2 in zwei Einzel-Blechteile 11', 11'' getrennt worden ist sowie eine Stützeinrichtung 15. Die Stützeinrichtung 15 weist die aus Fign. 1 und 2 bekannten Rohre, Außenrohr 18 und Innenrohr 19 auf, die starr an den Greiferschienen 6, 7 befestigt und teleskopartig im Bereich der Muffe 20 ineinander schiebbar sind. An der Muffe 20 ist ein Aufsatz 21 in Art eines Trägers für die Stützelemente 12, 13 befestigt. An der Muffe 20 ist weiterhin eine Führungsleiste 27 starr befestigt, die anderenendes in einer Führungsschiene 24 in Richtung des Pressendurchlaufs 23 gleitbar gelagert ist.FIG. 4 shows a second example with gripper rails 6, 7 movable between the stands 16 of the press, a sheet metal part 11 which was separated into two individual sheet metal parts 11 ′, 11 ″ in processing stage 2, and a support device 15. The support device 15 15 has the from Fig. 1 and 2 known tubes, outer tube 18 and inner tube 19, which are rigidly attached to the gripper rails 6, 7 and can be telescopically pushed into one another in the area of the sleeve 20. On the sleeve 20, an attachment 21 is fastened in the manner of a carrier for the support elements 12, 13. On the sleeve 20, a guide bar 27 is also rigidly attached, the other end is slidably mounted in a guide rail 24 in the direction of the press run 23.

Die Führungsschiene 24 ist durch ein Parallelgestänge aus den Parallelstangen 25 immer mittig zu den Greiferschienen 6, 7 gehalten. Hierfür sind die Parallelstangen 25 in Drehlagern 26 an den Greiferschienen 6, 7 und der Führungsschiene 24 gelagert. In Fig. 5 ist eine Lagerstelle 26 gemäß dem Schnittverlauf V - V in Fig. 4 dargestellt zur Darstellung von Einzelheiten. Die Konstruktionslinien, 25' 25'' deuten die unterschiedliche Schrägstellung der Parallelstangen 25 bei unterschiedlicher Öffnungsweite der Greiferschienen 6, 7 an.The guide rail 24 is always held in the center of the gripper rails 6, 7 by a parallel linkage from the parallel rods 25. For this purpose, the parallel rods 25 are mounted in pivot bearings 26 on the gripper rails 6, 7 and the guide rail 24. FIG. 5 shows a bearing point 26 according to the section line V - V in FIG. 4 to show details. The construction lines 25, 25 '' indicate the different inclination of the parallel rods 25 with different opening widths of the gripper rails 6, 7.

In Fig. 6 ist ein weiteres Beispiel dargestellt mit zwischen den Pressenständern 16 einer Presse beweglichen Greiferschienen 6, 7. Die Greiferschienen tragen Zahnstangen 28, 29, die parallel zueinander geführt und in greiferschienenfesten Führungsbuchsen 31 verschieblich sind. Die Zahnungen der Zahnstangen 28, 29 sind einander zugekehrt und greifen in die Zahnung eines Zahnrades 30, das an der Muffe 20 drehbar gelagert ist, so daß bei Öffnen-Schließbewegungen der Greiferschienen 6, 7 die Muffe 20 mittig zu diesen verbleibt. Die Muffe 20 weist die Stützelemente 12, 13, 21 auf für die Abstützung der aus dem Blechteil 11 in der z.B. letzten Bearbeitungsstufe 2 der Presse durch Trennschneiden vereinzelter Einzel-Blechteile 11', 11''.6 shows a further example with gripper rails 6, 7 which can move between the press stands 16 of a press. The gripper rails carry racks 28, 29 which are guided parallel to one another and are displaceable in guide bushes 31 fixed on the gripper rail. The teeth of the racks 28, 29 face each other and engage in the teeth of a gear 30 which is rotatably mounted on the sleeve 20, so that the sleeve 20 remains in the middle of these when the gripper rails 6, 7 are opened and closed. The sleeve 20 has the support elements 12, 13, 21 for supporting the from the sheet metal part 11 in the e.g. last processing stage 2 of the press by separating individual sheet metal parts 11 ', 11' '.

Claims (3)

  1. Device for removing two-piece parts from the final processing step in a press, which acts together with two gripper rails of a transfer device for sheet metal parts through the press, which rails are movable in three axes, and is provided with supporting elements engaging beneath the sheet metal parts, which elements can be moved together with the gripper rails in the lifting and lowering direction and in the transfer and return direction, characterized by an outer tube (18) and an inner tube (19), which are inserted into one another telescopically, can be pulled out from one another and pushed into one another transversely with respect to the press throughput (23) between the gripper rails (6, 7) and are firmly connected to the gripper rails by the ends which are remote from the telescopic connection, by a sleeve (20) having the supporting elements (12, 13) which is mounted displacably on at least one of the tubes transversely with respect to the press throughput, and by running surfaces (22) for the central supporting position of the sleeve which are formed between the sleeve, if appropriate an attachment (21) fixed on the latter and a bracket (17) fixed on the frame.
  2. Device for removing two-piece parts from the final processing step in a press, which acts together with two gripper rails of a transfer device for sheet metal parts through the press, which rails are movable in three axes, and is provided with supporting elements engaging beneath the sheet metal parts, which elements can be moved together with the gripper rails in the lifting and lowering direction and in the transfer and return direction, characterized by an outer tube (18) and an inner tube (19), which are inserted into one another telescopically, can be pulled out from one another and pushed into one another transversely with respect to the press throughput (23) between the gripper rails (6, 7) and are firmly connected to the gripper rails by the ends which are remote from the telescopic connection, by a sleeve (20) having the supporting elements (12, 13) which is mounted displacably on at least one of the tubes transversely with respect to the press throughput, which is provided with a guide strip (27), which is displacably mounted in a guide rail (24) which can be moved together with the gripper rails, and by parallel rods (25) which are mounted in an articulated manner on each of the gripper rails and the guide rail, in the manner of a double parallel guidance of the guide rail.
  3. Device for removing two-piece parts from the final processing step in a press, which acts together with two gripper rails of a transfer device for sheet metal parts through the press, which rails are movable in three axes, and is provided with supporting elements engaging beneath the sheet metal parts, which elements can be moved together with the gripper rails in the lifting and lowering direction and in the transfer and return direction, characterized by a first rack (28) and by a second rack (29), which are guided parallel to one another between the gripper rails (6, 7) transversely with respect to the press throughput (23) and are fastened by one end to in each case one of the gripper rails, and by a sleeve (20) having the supporting elements (12, 13), which sleeve has a toothed wheel (30), the racks simultaneously meshing on the toothed wheel on circumferential sides situated opposite one another.
EP92120642A 1991-12-20 1992-12-03 Device for taking out two piece-parts from the final step in a transfer-pressline Expired - Lifetime EP0548623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142298A DE4142298A1 (en) 1991-12-20 1991-12-20 DEVICE FOR REMOVING DOUBLE PARTS FROM THE LAST PROCESSING STAGE OF A PRESS
DE4142298 1991-12-20

Publications (2)

Publication Number Publication Date
EP0548623A1 EP0548623A1 (en) 1993-06-30
EP0548623B1 true EP0548623B1 (en) 1997-04-09

Family

ID=6447702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120642A Expired - Lifetime EP0548623B1 (en) 1991-12-20 1992-12-03 Device for taking out two piece-parts from the final step in a transfer-pressline

Country Status (4)

Country Link
US (1) US5429473A (en)
EP (1) EP0548623B1 (en)
DE (2) DE4142298A1 (en)
ES (1) ES2101008T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5875673A (en) * 1997-12-30 1999-03-02 Verson, A Division Of Allied Products Corporation Orientation station for multi-station metal-forming machines
DE102004016074B4 (en) * 2004-03-30 2009-05-28 Westfalia Presstechnik Gmbh & Co. Kg Device for the simultaneous removal of more than two parts from the last processing stage of a molding press
DE102007009747B4 (en) * 2007-02-28 2009-01-29 Siemens Ag transfer system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1452769A1 (en) * 1963-11-12 1969-05-29 Mueller Fritz Pressenfab Device for conveying workpieces to be processed by a press
US3757961A (en) * 1972-01-10 1973-09-11 East Dayton Tool & Die Co Article transfer apparatus
US4032018A (en) * 1975-11-21 1977-06-28 Wallis Bernard J Workpiece transfer mechanism
US4735303A (en) * 1986-08-26 1988-04-05 Wallis Bernard J Transfer apparatus
DE3712838A1 (en) * 1987-04-15 1988-11-03 Mueller Weingarten Maschf Apparatus for removing twin parts from the last stage of a multiple-die press

Also Published As

Publication number Publication date
US5429473A (en) 1995-07-04
EP0548623A1 (en) 1993-06-30
ES2101008T3 (en) 1997-07-01
DE4142298A1 (en) 1993-07-01
DE59208327D1 (en) 1997-05-15

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