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EP0191397B1 - Transfer press - Google Patents

Transfer press Download PDF

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Publication number
EP0191397B1
EP0191397B1 EP86101398A EP86101398A EP0191397B1 EP 0191397 B1 EP0191397 B1 EP 0191397B1 EP 86101398 A EP86101398 A EP 86101398A EP 86101398 A EP86101398 A EP 86101398A EP 0191397 B1 EP0191397 B1 EP 0191397B1
Authority
EP
European Patent Office
Prior art keywords
crosshead
rack
bolt
effective connection
region
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
EP86101398A
Other languages
German (de)
French (fr)
Other versions
EP0191397A2 (en
EP0191397A3 (en
Inventor
Herbert Höhn
Kurt Strommer
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
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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0191397A2 publication Critical patent/EP0191397A2/en
Publication of EP0191397A3 publication Critical patent/EP0191397A3/en
Application granted granted Critical
Publication of EP0191397B1 publication Critical patent/EP0191397B1/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
    • 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
    • B21D43/057—Devices for exchanging transfer bars or grippers; Idle stages, e.g. exchangeable

Definitions

  • the invention relates to a device for intermediate storage of workpieces in empty stages of transfer presses, with gripping and holding devices arranged in the region of empty stages for support elements detachably attached to sliding tables or on tools carried by them and to be brought into the area of the next empty stage.
  • step presses transfer presses, large part steps and the like.
  • Presses in which large workpieces are processed in stages arranged one behind the other, have so-called empty stages between the press stands, in which no forming takes place.
  • the empty stage must have a clipboard which corresponds to the shape of the underside of the workpieces to be supported in the support area.
  • clipboards adapted to the new workpiece must be set up.
  • the device consists of a gripping and holding device arranged in the area of an empty stage. With the aid of racks mounted on the gripping and holding device, movable in the direction of transfer and designed as a gripper, supporting elements which can be moved with the sliding table can be grasped and implemented in the area of the empty stage.
  • the position of the support elements in the empty position, support position, in relation to the transport direction of the workpieces, corresponds to the position of the support elements on the sliding table or on the tool.
  • a clipboard can be set up for only one workpiece. The area of the space between the stands and the area of a Waste box cannot be bridged. The empty level must not exceed a width specified by the transfer movement.
  • each gripping and holding device is assigned receptacles which can be acted upon and which, on the one hand, can be operatively connected to a supporting element and, on the other hand, are operatively connected to a rotary drive.
  • Advantages of the invention include in the fact that existing clipboard devices can be retrofitted, that the device is independent of the workpiece and serves to automate the press, since the device is absolutely reliable.
  • the support elements can be turned automatically without any additional adjusting means.
  • Shorter transfer movements can be set up for two workpieces with the same number of support elements in the transport direction of the workpieces one behind the other.
  • the empty stage of a press is represented by a lock box 1 in the area of press stands 2.
  • a bracket 3 with support arms 4 for mounting two toothed racks 7 aligned in the transport direction of the workpieces - arrows 16.
  • the toothed racks 7 are stored in support bearings 6.
  • An actuating motor 8 is fastened on the press side, possibly on the bracket 3, which acts rotatably on a shaft 11 via drive pulleys 10 and drive belts 9.
  • the Shaft 11 is mounted in both support arms 4 and has gear wheels 12 which engage in the same toothing on the underside of the toothed racks 7.
  • the support arms 4 are also rigidly connected to one another by a contact strip 20.
  • the end parts 17 of the toothed racks 7 are, as is still to be described in relation to FIG. 3, designed to receive a crossbar 13 which is removably mounted on brackets 23 on a sliding table 21, possibly on a tool 22 carried by the sliding table 21.
  • the sliding table 21 is interchangeable with solvent 24.
  • the traverse 13 is drawn on the racks 7 with full lines, on the tool 22 in dash-dotted lines.
  • this carries a locating pin 38 in a pivot bearing 26.
  • a support 25 adapted to the shape of the supporting element 14 is attached.
  • a torsion spring 18 is stretched out between the upper region of the locating pin 38 and the crossmember 13. Locating pin 38, support 25 and torsion spring 18 form the rotatable mount 15.
  • racks 28 are loosely inserted in the crossmember 13 in the rotating area of the mounting bolts 38, which extend in the transport direction 16 and interact with teeth 27 on the mounting bolts 38.
  • the toothed racks 28 are placed against the contact strip 20 by means of rotary lugs, stops 19.
  • the energy stored in the torsion spring 18 during the movement of the traverse 13 into the empty position is released, as a result of which the locating pin 38 with the support 25 and the support element 14 is adjusted such that the support element 14 aligns itself in a direction transverse to the transport direction 16 of the workpieces.
  • the toothed racks 28 move to the right in relation to the crossmember 13.
  • the racks 28 Before reaching the support position, the racks 28 come to rest against the contact strip 20 via the stops 19, so that the racks 28 move to the left with respect to the crossmember, the support elements 14 are rotated as a result of the serrations 27 and the torsion springs 18 are tensioned.
  • each toothed rack 7 it has, according to FIG. 3, e.g. a centrally mounted shift rod 29, which is fixedly connected to the piston of a pressurizable working cylinder 5.
  • the other end part of the displacement rod 29, which is displaceable in the direction of the double arrow 34, is connected to a bolt 30.
  • the bolt 30 is rotatably mounted on the sliding rod 29 and has a thread-like circumferential groove 31 in which a pin 32 is guided.
  • the pin 32 is fixed in the rack 7.
  • the protruding from the rack 7 end of the bolt 30 carries a bolt 35 which can be fixed behind a recess 36 in the crossmember due to the rotation of the bolt 30.
  • Double arrow 33 indicates the rotary movement of the bolt 35 for fixing the cross member 13 to the collar shoulder 37 on the rack 7 and for releasing it.
  • the cross member 13 firmly on the toothed racks 7 or to provide the toothed racks 7 with the receptacles 15 which can be actuated by rotation, the rotary drive of which can also take place via a controllable actuator.
  • the support position of the support elements 14 can also be another, e.g. be in the middle of the press stands 2.
  • the console 3 is to be equipped to accommodate two further toothed racks 7 to be arranged on the right as gripper elements for acceptance on a second sliding table or its supporting elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Specific Conveyance Elements (AREA)
  • Press Drives And Press Lines (AREA)

Description

Die Erfindung betrifft eine Einrichtung zur Zwischenablage von Werkstücken in Leerstufen von Transferpressen, mit im Bereich von Leerstufen angeordneten Greif- und Haltevorrichtungen für an Schiebetischen oder an von diesen getragenen Werkzeugen lösbar angebrachte und in den Bereich der nächstliegenden Leerstufe zu verbringende Tragelemente.The invention relates to a device for intermediate storage of workpieces in empty stages of transfer presses, with gripping and holding devices arranged in the region of empty stages for support elements detachably attached to sliding tables or on tools carried by them and to be brought into the area of the next empty stage.

In Stufenpressen, Transferpressen, Großteilstufen- u.dgl. Pressen, in denen große Werkstücke in hintereinander angeordneten Stufen bearbeitet werden, sind zwischen den Pressenständern sogenannte Leerstufen vorhanden, in denen keine Umformung erfolgt. Als Folge der festliegenden Umsetzbewegung für die Werkstücke muß die Leerstufe eine Zwischenablage aufweisen, die der Form der Unterseite der abzustützenden Werkstücke im Abstützbereich entspricht. Mit jedem Werkzeugwechsel sind dem neuen Werkstück angepaßte Zwischenablagen einzurichten.In step presses, transfer presses, large part steps and the like. Presses, in which large workpieces are processed in stages arranged one behind the other, have so-called empty stages between the press stands, in which no forming takes place. As a result of the fixed transfer movement for the workpieces, the empty stage must have a clipboard which corresponds to the shape of the underside of the workpieces to be supported in the support area. With every tool change, clipboards adapted to the new workpiece must be set up.

In der DE-C1- 33 34 021 ist eine Einrichtung zur Zwischenablage von Werkstücken in Leerstufen von Transferpressen gezeigt und beschrieben worden. Die Einrichtung besteht aus einer im Bereich einer Leerstufe angeordneten Greif- und Haltevorrichtung. Mit Hilfe an der Greif- und Haltevorrichtung angebrachter, in Transferrichtung beweglicher und als Greifer ausgebildeter Zahnstangen sind mit dem Schiebetisch verfahrbare Tragelemente erfaßbar und in den Bereich der Leerstufe umsetzbar. Die Lage der Tragelemente in der Leerstufe, Abstützlage, in Bezug auf die Transportrichtung der Werkstücke, entspricht der Lage der Tragelemente am Schiebetisch bzw. an dem Werkzeug. Es ist so eine Zwischenablage für nur ein Werkstück einrichtbar. Der Bereich des Zwischenraumes zwischen den Ständern und der Bereich eines Abfallkastens kann nicht überbrückt werden. Die Leerstufe darf eine durch die Umsetzbewegung vorgegebene Breite nicht überschreiten.In DE-C1- 33 34 021 a device for the intermediate storage of workpieces in empty stages of transfer presses has been shown and described. The device consists of a gripping and holding device arranged in the area of an empty stage. With the aid of racks mounted on the gripping and holding device, movable in the direction of transfer and designed as a gripper, supporting elements which can be moved with the sliding table can be grasped and implemented in the area of the empty stage. The position of the support elements in the empty position, support position, in relation to the transport direction of the workpieces, corresponds to the position of the support elements on the sliding table or on the tool. A clipboard can be set up for only one workpiece. The area of the space between the stands and the area of a Waste box cannot be bridged. The empty level must not exceed a width specified by the transfer movement.

Es ist Aufgabe der Erfindung, die Einrichtung zur Zwischenablage von Werkstücken in Leerstufen derart weiterzubilden, daß die Tragelemente bei deren Einbringen in Richtung des Transportes der Werkstücke gedreht werden, um so einen größeren Leerstufenbereich zu überbrücken.It is an object of the invention to further develop the device for the intermediate storage of workpieces in empty stages such that the support elements are rotated in the direction of the transport of the workpieces when they are introduced so as to bridge a larger empty stage region.

Diese Aufgabe ist dadurch gelöst, daß in einer Einrichtung der eingangs genannten Art jeder Greif- und Haltevorrichtung drehbeaufschlagbare Aufnahmen zugeordnet sind, die einerseits mit je einem Tragelement wirkverbindbar und andererseits mit einem Drehantrieb wirkverbunden sind.This object is achieved in that, in a device of the type mentioned at the outset, each gripping and holding device is assigned receptacles which can be acted upon and which, on the one hand, can be operatively connected to a supporting element and, on the other hand, are operatively connected to a rotary drive.

Die Merkmale der weiteren Ansprüche stellen bevorzugte, vorteilhafte Ausgestaltungen innerhalb der Erfindung dar.The features of the further claims represent preferred, advantageous embodiments within the invention.

Vorteile der Erfindung bestehen u.a. darin, daß vorhandene Einrichtungen zur Zwischenablage nachgerüstet werden können, daß die Einrichtung werkstückunabhängig ist und der Automatisierung der Presse dient, da die Einrichtung absolut funktionssicher ist. Das Verdrehen der Tragelemente kann selbsttätig erfolgen ohne ein zusätzliches Stellmittel. Für eine andere, z.B. kürzere Umsetzbewegung sind bei gleicher Anzahl an Tragelementen in Transportrichtung der Werkstücke hintereinander liegende Zwischenablagen für zwei Werkstücke einrichtbar.Advantages of the invention include in the fact that existing clipboard devices can be retrofitted, that the device is independent of the workpiece and serves to automate the press, since the device is absolutely reliable. The support elements can be turned automatically without any additional adjusting means. For another, e.g. Shorter transfer movements can be set up for two workpieces with the same number of support elements in the transport direction of the workpieces one behind the other.

Im folgenden soll die Erfindung anhand eines bevorzugten Ausführungsbeispieles beschrieben werden. In der Zeichnung ist dargestellt mit:

Fig. 1
eine Einrichtung zur Zwischenablage in einer Vorderansicht,
Fig. 2
die in Fig. 1 gezeigte Einrichtung in einer Draufsicht und
Fig. 3
ein Verstelltrieb für die Festsetzung der Traverse an den Zahnstangen.
In the following, the invention will be described on the basis of a preferred exemplary embodiment. The drawing shows:
Fig. 1
a device for clipboard in a front view,
Fig. 2
the device shown in Fig. 1 in a plan view and
Fig. 3
an adjustment drive for fixing the crossbar to the racks.

Die Leerstufe einer Presse wird durch einen Schließkasten 1 im Bereich von Pressenständern 2 dargestellt. Hier befindet sich eine Konsole 3 mit Tragarmen 4 zur Lagerung von zwei in Transportrichtung der Werkstücke - Pfeile 16 - ausgerichteten Zahnstangen 7. Die Lagerung der Zahnstangen 7 erfolgt in Stützlagern 6. Pressenseitig, ggf. an der Konsole 3, ist ein Stellmotor 8 befestigt, der über Treibscheiben 10 und Treibriemen 9 auf eine Welle 11 drehbar wirkt. Die Welle 11 ist in beiden Tragarmen 4 gelagert und weist Zahnräder 12 auf, die in eine gleiche Verzahnung an der Unterseite der Zahnstangen 7 eingreifen. Die Tragarme 4 sind weiterhin durch eine Anlageleiste 20 starr untereinander verbunden. Die Endteile 17 der Zahnstangen 7 sind, wie es zu Fig. 3 noch zu beschreiben ist, zur Aufnahme einer an einem Schiebetisch 21, ggf. an einem von dem Schiebetisch 21 getragenen Werkzeug 22, abnehmbar über Halterungen 23 gelagerten Traverse 13 ausgebildet. Der Schiebetisch 21 ist über Laufmittel 24 austauschbar. Die Traverse 13 ist an den Zahnstangen 7 mit vollen Linien, an dem Werkzeug 22 in strichpunktierten Linien gezeichnet. Diese trägt für jedes Tragelement 14 einen Aufnahmebolzen 38 in einem Drehlager 26. In dem oberen Endbereich des Aufnahmebolzens 38 ist eine der Form des Tragelementes 14 angepaßte Auflage 25 angebracht. Zwischen dem oberen Bereich des Aufnahmebolzens 38 und der Traverse 13 ist eine Drehfeder 18 ausgespannt. Aufnahmebolzen 38, Auflage 25 und Drehfeder 18 bilden die drehbeaufschlagbare Aufnahme 15.The empty stage of a press is represented by a lock box 1 in the area of press stands 2. Here there is a bracket 3 with support arms 4 for mounting two toothed racks 7 aligned in the transport direction of the workpieces - arrows 16. The toothed racks 7 are stored in support bearings 6. An actuating motor 8 is fastened on the press side, possibly on the bracket 3, which acts rotatably on a shaft 11 via drive pulleys 10 and drive belts 9. The Shaft 11 is mounted in both support arms 4 and has gear wheels 12 which engage in the same toothing on the underside of the toothed racks 7. The support arms 4 are also rigidly connected to one another by a contact strip 20. The end parts 17 of the toothed racks 7 are, as is still to be described in relation to FIG. 3, designed to receive a crossbar 13 which is removably mounted on brackets 23 on a sliding table 21, possibly on a tool 22 carried by the sliding table 21. The sliding table 21 is interchangeable with solvent 24. The traverse 13 is drawn on the racks 7 with full lines, on the tool 22 in dash-dotted lines. For each support element 14, this carries a locating pin 38 in a pivot bearing 26. In the upper end region of the locating pin 38, a support 25 adapted to the shape of the supporting element 14 is attached. A torsion spring 18 is stretched out between the upper region of the locating pin 38 and the crossmember 13. Locating pin 38, support 25 and torsion spring 18 form the rotatable mount 15.

Wie es aus Fig. 2 ersichtlich ist, sind in der Traverse 13 im Drehbereich der Aufnahmebolzen 38 Zahnstangen 28 lose eingesetzt, die sich in Transportrichtung 16 erstrecken und mit einer Zahnung 27 an den Aufnahmebolzen 38 zusammenwirken. Die Zahnstangen 28 sind über Drehansätze, Anschläge 19, gegen die Anlageleiste 20 gelegt.As can be seen from FIG. 2, racks 28 are loosely inserted in the crossmember 13 in the rotating area of the mounting bolts 38, which extend in the transport direction 16 and interact with teeth 27 on the mounting bolts 38. The toothed racks 28 are placed against the contact strip 20 by means of rotary lugs, stops 19.

Bei dem Zurückbewegen der Traverse 13 zur Ablage in den Halterungen 23 am Werkzeug 22 oder dem Schiebetisch 21 wird die in der Drehfeder 18 während des Bewegens der Traverse 13 in die Leerstufe gespeicherte Energie frei, wodurch der Aufnahmebolzen 38 mit der Auflage 25 und dem Tragelement 14 sich derart verstellt, daß sich das Tragelement 14 in eine quer zur Transportrichtung 16 der Werkstücke liegende Richtung ausrichtet. Die Zahnstangen 28 bewegen sich nach rechts in Bezug auf die Traverse 13. Nach dem Werkzeugwechsel durch Einfahren eines neu eingerichteten Schiebetisches 21 bei zumindest etwas von der Traverse 13 zurückgezogenen Zahnstangen 7 werden die hier dem Werkzeug 22 zugeordneten Tragelemente 14 über die Traverse 13 von den in ihren Endbereichen 17 als Greiferelemente ausgebildeten Zahnstangen 7 erfaßt und in die Leerstufe bewegt. Vor dem Erreichen der Abstützlage kommen die Zahnstangen 28 über die Anschläge 19 zur Anlage an der Anlageleiste 20, so daß sich die Zahnstangen 28 in Bezug auf die Traverse nach links bewegen, die Tragelemente 14 infolge der Zahnungen 27 gedreht und die Drehfedern 18 gespannt werden.When the traverse 13 is moved back for storage in the holders 23 on the tool 22 or the sliding table 21, the energy stored in the torsion spring 18 during the movement of the traverse 13 into the empty position is released, as a result of which the locating pin 38 with the support 25 and the support element 14 is adjusted such that the support element 14 aligns itself in a direction transverse to the transport direction 16 of the workpieces. The toothed racks 28 move to the right in relation to the crossmember 13. After the tool change by moving in a newly set-up sliding table 21 with at least some racks 7 retracted from the crossmember 13, the support elements 14 assigned here to the tool 22 are removed by the crossmember 13 from those in FIG their end regions 17 grips designed as gripper elements 7 and moved into the empty position. Before reaching the support position, the racks 28 come to rest against the contact strip 20 via the stops 19, so that the racks 28 move to the left with respect to the crossmember, the support elements 14 are rotated as a result of the serrations 27 and the torsion springs 18 are tensioned.

Zur sicheren Halterung der Traverse 13 an jeder Zahnstange 7 weist diese entsprechend Fig. 3 z.B. eine zentralgelagerte Verschiebestange 29 auf, die mit dem Kolben eines druckbeaufschlagbaren Arbeitszylinders 5 fest verbunden ist. Der andere Endteil der so in Richtung des Doppelpfeiles 34 verschiebbaren Verschiebestange 29 ist mit einem Bolzen 30 verbunden. Der Bolzen 30 ist an der Verschiebestange 29 drehbar gelagert und weist eine gewindeähnliche Umfangsnut 31 auf, in der ein Stift 32 geführt ist. Der Stift 32 ist in der Zahnstange 7 festgesetzt. Das aus der Zahnstange 7 hervorstehende Ende des Bolzens 30 trägt einen Riegel 35, der infolge der bewirkten Drehung des Bolzens 30 hinter einer Ausnehmung 36 in der Traverse festsetzbar ist. Doppelpfeil 33 weist auf die Drehbewegung des Riegels 35 zum Festsetzen der Traverse 13 an dem Bundansatz 37 an der Zahnstange 7 und zum Lösen von diesem hin.To hold the crossbar 13 securely on each toothed rack 7, it has, according to FIG. 3, e.g. a centrally mounted shift rod 29, which is fixedly connected to the piston of a pressurizable working cylinder 5. The other end part of the displacement rod 29, which is displaceable in the direction of the double arrow 34, is connected to a bolt 30. The bolt 30 is rotatably mounted on the sliding rod 29 and has a thread-like circumferential groove 31 in which a pin 32 is guided. The pin 32 is fixed in the rack 7. The protruding from the rack 7 end of the bolt 30 carries a bolt 35 which can be fixed behind a recess 36 in the crossmember due to the rotation of the bolt 30. Double arrow 33 indicates the rotary movement of the bolt 35 for fixing the cross member 13 to the collar shoulder 37 on the rack 7 and for releasing it.

Es liegt im Rahmen einer Weiter bildung der Erfindung, die Traverse 13 fest an den Zahnstangen 7 anzuordnen oder die Zahnstangen 7 mit den drehbeaufschlagbaren Aufnahmen 15 zu versehen, wobei deren Drehantrieb auch über einen steuerbaren Stellantrieb erfolgen kann. Die Abstützlage der Tragelemente 14 kann auch eine andere, z.B. mittig zu den Pressenständern 2 gelegene sein. Für die in Fig. 1 gezeigte Ausführungsform ist die Konsole 3 zur Aufnahme von zwei weiteren, im Bild rechts anzuordnenden Zahnstangen 7 als Greiferelementen zur Übernahme an einem zweiten Schiebetisch oder dessen Werkzeug gelagerter Tragelemente auszurüsten.It is within the scope of a further development of the invention to arrange the cross member 13 firmly on the toothed racks 7 or to provide the toothed racks 7 with the receptacles 15 which can be actuated by rotation, the rotary drive of which can also take place via a controllable actuator. The support position of the support elements 14 can also be another, e.g. be in the middle of the press stands 2. For the embodiment shown in FIG. 1, the console 3 is to be equipped to accommodate two further toothed racks 7 to be arranged on the right as gripper elements for acceptance on a second sliding table or its supporting elements.

Claims (8)

  1. Apparatus for the intermediate deposition of workpieces in blank stages of transfer presses, having gripping and holding devices, arranged in the region of blank stages, for bearing elements (14) which are fixed detachably on sliding tables (21) or on tools (22) borne by the latter, are to be transported into the region of the next blank stage, and extend essentially over a dimension of the workpieces to be supported, characterised in that each gripping and holding device is assigned receivers (15) which can be set in rotation about a vertical axis of rotation, which can be brought into effective connection, on the one hand, with a bearing element (14) on each sliding table (21) by a movement in the direction of said sliding tables, and are in effective connection, on the other hand, with a rotary drive, by means of which each of the bearing elements (14) can be rotated from a transverse direction, which the bearing element (14) assumes on the sliding table (21), into a longitudinal direction, relative to the direction (16) of transport of the workpieces, and vice versa.
  2. Apparatus according to Claim 1 having racks (7) which are displaceably mounted and drivable on the gripping and holding device in the direction (16) of transport of the workpieces and are constructed as grippers, characterised in that the receivers (15), which can be set in rotation, are arranged in the region of the racks (7) near to the tool (22) and the sliding table (21).
  3. Apparatus according to Claim 1 or 2, characterised in that the gripping and holding device can be brought into effective connection with at least one crosshead (13) bearing the bearing elements (14), which crosshead is fastened detachably to the sliding table (21) or to the tool (22) and can be carried along by the racks (7) of the gripping and holding device, and in that the crosshead (13) has for each bearing element (14) a receiver (15) which can be set in rotation and which is in effective connection with a rotary drive.
  4. Apparatus according to Claim 3, characterised in that the crosshead (13) can be picked up by the end parts (17) of racks (7) near to the tool (22) and the sliding table (21), in that a gear (12) mounted rotationally on the bracket (3) of the gripping and holding device engages in each case in the toothings of the racks (7), and the gears (12) are in effective connection with one another by a common shaft (11) driven by a motor (8).
  5. Apparatus according to Claim 3, characterised in that the receivers (15), which can be set in rotation in the crosshead (13), comprise a receiver bolt (38) having an upper receiver region (rest 25) for the bearing element (14) and a pivot bearing region (26) for mounting in the crosshead (13), and in that a toothing (27), which is in effective connection with the rotary drive, is formed in each receiver bolt (38) in the pivot bearing region (26).
  6. Apparatus according to Claim 5, characterised in that the rotary drive comprises a rack (28) which is assigned to each receiver bolt (38) and is in effective connection with its toothing (27), in that the rack (28) is loosely mounted in the crosshead (13) in the direction (16) of transport of the workpieces, in that each loose rack (28) has in each case a stop (19) which is directed against the gripping and holding device and can be placed on the latter on a contact strip (20), and in that each receiver bolt (38) is in effective connection with an energy store (18) for storing the rotary movement.
  7. Apparatus according to Claim 6, characterised in that each energy store is a prestressed torsion spring (19) mounted on the receiver bolt (38), which torsion spring is fastened with its one end part to the crosshead (13) and with its other end part to the receiver bolt (38).
  8. Apparatus according to Claim 2, characterised in that a displacing rod (29) is carried along parallel to each rack (7), which displacing rod is in effective connection by one end part with an operating cylinder (5), which is mounted in the region of the rack (7) remote from the tool (22) and the sliding table (21), for its longitudinal movement (34), and by its other end part with a bolt (30) mounted rotatably in the region of the rack (7) near to the tool (22) and the sliding table (21), in that the bolt (30) has a spiral-shaped circumferential groove (31) which interacts with a pin (32) in the rack (7) for a rotary movement (33) during its longitudinal movement (34) via the displacing rod (29), and in that the bolt (30) with the end part projecting from the rack (7) has a fixed bar (35) which can be anchored on the crosshead (13).
EP86101398A 1985-02-13 1986-02-04 Transfer press Expired - Lifetime EP0191397B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853504765 DE3504765A1 (en) 1985-02-13 1985-02-13 TRANSFER PRESS
DE3504765 1985-02-13

Publications (3)

Publication Number Publication Date
EP0191397A2 EP0191397A2 (en) 1986-08-20
EP0191397A3 EP0191397A3 (en) 1988-07-20
EP0191397B1 true EP0191397B1 (en) 1991-04-10

Family

ID=6262310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101398A Expired - Lifetime EP0191397B1 (en) 1985-02-13 1986-02-04 Transfer press

Country Status (5)

Country Link
US (1) US4713961A (en)
EP (1) EP0191397B1 (en)
BR (1) BR8600540A (en)
DE (2) DE3504765A1 (en)
ES (1) ES8703311A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992208A (en) * 1997-05-23 1999-11-30 Schuler Pressen Gmbh & Co. Press arrangements with automatic tool exchange and method of tool exchange

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709762A1 (en) * 1987-03-25 1988-10-06 Schuler Gmbh L TRANSFER PRESS
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Also Published As

Publication number Publication date
BR8600540A (en) 1986-10-21
DE3504765A1 (en) 1986-08-21
US4713961A (en) 1987-12-22
ES551904A0 (en) 1987-02-16
EP0191397A2 (en) 1986-08-20
ES8703311A1 (en) 1987-02-16
DE3678588D1 (en) 1991-05-16
EP0191397A3 (en) 1988-07-20

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