EP0394723A1 - Transfer device in a transfer press or metal forming machine - Google Patents

Transfer device in a transfer press or metal forming machine Download PDF

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Publication number
EP0394723A1
EP0394723A1 EP90106572A EP90106572A EP0394723A1 EP 0394723 A1 EP0394723 A1 EP 0394723A1 EP 90106572 A EP90106572 A EP 90106572A EP 90106572 A EP90106572 A EP 90106572A EP 0394723 A1 EP0394723 A1 EP 0394723A1
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EP
European Patent Office
Prior art keywords
carriages
metal parts
sheet metal
press
movement
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
EP90106572A
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German (de)
French (fr)
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EP0394723B1 (en
Inventor
Karl Thudium
Walter Rieger
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L Schuler GmbH
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L Schuler GmbH
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Publication of EP0394723A1 publication Critical patent/EP0394723A1/en
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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
    • B21D43/052—Devices having a cross bar
    • 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 an implementation device of the type specified in the preamble of claim 1 and claim 2.
  • Transfer devices in presses transport the e.g. an inserting device (feeder) in the first processing stage inserted sheets or workpieces through the press into the area of the removal. Forming is carried out using ram-driven tools or tool upper parts.
  • the transfer device must be moved in two or three axes, such as lifting / lowering, transporting / returning and closing / opening if necessary, in time with the press.
  • the carriages each one rail are still connected to each other so that the first pair of carriages connected by a cross-beam with the third and each next but one pair of carriages as well as the second pair of carriages with the fourth and each next but one pair of carriages un Execute or achieve different movements when reversing and different standstill positions between the tools.
  • the movements are picked up by rotating cam discs.
  • the runners are raised to lift the formed sheet metal part / workpieces from the lower tool parts, during the transfer movement, and to deposit the sheet metal parts in the next stage.
  • the first and second carriages on each running rail are connected to a cam follower lever attached to the respective cam disc by means of link rods.
  • correction areas for the production of the cam disks can be predetermined and therefore do not require any additional structural measures.
  • a tool upper part of a tool 4 for forming sheet metal parts 3 is attached to the ram 2 of the press 1.
  • the sheet metal parts 3 are in the processing stages, which are characterized by the tools 4, optionally with intermediate storage on supports 5.
  • a conversion device is provided, which is indicated overall by the item number 6.
  • This has one or two running rails 7, 7 ', of which the running rail 7 located in front of tappet 2 and tool 4 can be seen.
  • the rails 7, 7 ' are guided in straight guides 23 on press stands and by tapping a cam 18 by means of cam follower 16 and motion drive a longitudinal rod 14 and deflection devices 13 passed through the press 1 above the straight guides 23 can be raised and lowered.
  • the articulation point of the cam follower lever 16 on the longitudinal rod 14 is positioned at 22.
  • Each track 7 and 7 'each have a cam 18 and the means 13, 14, 22 for transmitting the movements.
  • FIG. 1 shows the carriages 8, 9 in a position during the return movement, which is positioned at 50 in FIG. 3.
  • the carriages 9 are provided with holding means for receiving, transporting and storing the sheet metal parts 3.
  • the holding means consist of a respective one on the front and rear rails 7, 7 'movable carriage 9, 9' connecting cross-beam 11 and a suction spider attached to this 12.
  • the carriage 8 of each rail 7, 7 ' serve to bridge the distance between the cam follower lever 36 and the second pair of carriages carrying a suction spider 12.
  • the cam follower levers 36, 37 are placed on cams 41, 42 and, like the cam follower levers 16, 16 ', are held by means of pressure cylinders or corresponding actuating means for bearing against the cam tracks.
  • the movement of the cam follower levers 36, 37 takes place in the articulation points 34, 35 by means of articulation rods 26 for the carriages 8 and articulation rods 31 for the carriages 9 , 7 'raised synchronously, there is an offset of the carriages 8, 9 and the follower carriage, which are connected to the articulated carriages 8, 9 via corresponding link rods.
  • the offset of the carriage 8 is due to the new one drawn above Location 8 'has been indicated.
  • the offset is greater the closer the articulated carriage 8 or 9 is to the articulation point 34 or 35, ie the shorter the articulation rods 26 and 31 are.
  • the articulation points of these articulation rods 26, 31 on the carriages 8, 9 are indicated at 27 and 32, respectively.
  • With 7 ⁇ a raised rail 7 or 7 'is positioned.
  • the movement of the carriage 8, 9 and the follower carriage is indicated for the carriage 8 with 28 and for the carriage 9 with 33 '.
  • the movement of the carriage 9 from the removal position for the sheet metal part 3 in the lower tool part into the raised transport position is indicated in the middle of the tool 4 with the circular arc 33.
  • FIG. 2 shows the bearing points of the cam disks 41, 42 and 18 and the cam follower levers 36, 37 and 16.
  • the cams 41, 42, 18 are mounted on the hub 48 of the drive gear 47 in a rotationally secure manner.
  • the gear 47 is supported by the hub 48 in e.g. Stand plates 46, as well as the bearing of the cam follower levers 36, 37, 16 in the split shaft bearing 21a, 21b.
  • the articulation rods 14 for lifting / lowering are stored in the articulation point 22, and those of the articulation rods 26, 31 in the articulation points 34, 35.
  • the transfer movement of the suction spider 12 or the carriages 8, 9 from FIG. 1 is indicated by 49, the return movement of which is indicated by 50.
  • the transfer movement 49 begins with a linear, vertical lifting movement 52, which is predetermined by the largest possible dimension 51 of all the tools 4 that can be used.
  • the sheet metal part 3 must be lifted out of the lower tool part in this vertical movement 52. With 51 'the movement of the lower edge of the sheet metal part 3 can be seen.
  • This initial vertical movement 52 is brought about by the fact that the cam disks 41, 42 for the transfer of the workpieces 3 are corrected in areas indicated by 45 compared to a curve shape with which such a movement has not previously been possible, ie the cam tracks of the cam disks 41, 42 have an undersize or oversize compared to a conventional locking path, the undersize or oversize being dependent on the position of the pivot point of the associated cam follower lever on the press frame.

Abstract

A transfer device in a press (1) with a ram (2) which can be moved up and down, for forming sheet-metal parts (3) by means of tools (4), has running rails (7, 7') and travelling carriages (8, 9) which can be moved on the latter. The travelling carriages (8, 9) carry suction spiders (12). The movement of the travelling carriages (8, 9) in the horizontal direction is picked off from cam plates (41, 42) by means of cam-follower levers (36, 37). If the running rails (7, 7') are raised in order to lift the sheet-metal parts (3) out of the bottom part of the tool, the travelling carriages (8, 9) become misaligned. To correct this misalignment, i.e. to produce linear vertical lifting-out movements, corresponding correction regions (45) are provided on the cam plates (41, 42). <IMAGE>

Description

Die Erfindung betrifft eine Umsetzeinrichtung der im Oberbegriff des Anspruchs 1 und des Anspruchs 2 angegebenen Art.The invention relates to an implementation device of the type specified in the preamble of claim 1 and claim 2.

Umsetzeinrichtungen in Pressen transportieren die von z.B. einem Einlegegerät (Feeder) in die erste Bearbeitungsstufe eingelegten Bleche bzw. Werkstücke durch die Presse bis in den Bereich der Entnah­me. Die Umformung erfolgt über stößelbewegte Werkzeuge bzw. Werkzeug­oberteile. Die Umsetzeinrichtung ist im Takt der Presse in zwei oder drei Achsen wie heben/senken, transportieren/zurückführen und ggf. schließen/öffnen zu bewegen.Transfer devices in presses transport the e.g. an inserting device (feeder) in the first processing stage inserted sheets or workpieces through the press into the area of the removal. Forming is carried out using ram-driven tools or tool upper parts. The transfer device must be moved in two or three axes, such as lifting / lowering, transporting / returning and closing / opening if necessary, in time with the press.

In unserer deutschen Patentanmeldung P 39 05 068.8 ist eine Um­setzeinrichtung in einer Hybrid-Pressen- o.dgl. Anlage beschrieben worden, bei der Umsetzeinrichtung zwei Laufschienen aufweist, die sich auf gegenüberliegenden Seiten von Stößel und Werkzeugen in Rich­tung des Blechteiletransports erstrecken. Auf den Laufschienen sind Laufwagen verschiebbar gelagert. Hierbei sind einander gegenüber be­findliche Laufwagen durch eine Quertraverse untereinander verbunden. Die Quertraversen insgesamt sind von den Laufwagen durch eine Querbe­wegung der Laufschienen abkuppelbar, um die an diesen befestigten Hal­termittel bei Werkzeugwechsel mit austauschen zu können. Die Laufwagen je einer Laufschiene sind weiterhin so miteinander verbunden, daß je­weils das erste durch eine Quertraverse verbundene Laufwagenpaar mit dem dritten und jedem übernächsten Laufwagenpaar sowie das zweite Laufwagenpaar mit dem vierten und jedem übernächsten Laufwagenpaar un­ terschiedliche Bewegungen beim Rücklauf und unterschiedliche Still­standstellungen zwischen den Werkzeugen ausführen bzw. erreichen. Die Bewegungen werden von drehbewegten Kurvenscheiben abgegriffen. Zum Ausheben der umgeformten Blechteil/Werkstücke aus den Werkzeugunter­teilen, während der Umsetzbewegung, sowie zur Ablage der Blechteile in der Folgestufe werden die Laufschienen angehoben. Der jeweils erste und zweite Laufwagen auf jeder Laufschiene ist mit einem an die jeweilige Kurvenscheibe angelegten Kurvenfolgerhebel vermittels An­lenkstangen verbunden. Da die Anlenkpunkte der Kurvenfolgerhebel an den Anlenkstangen infolge einer in dem Zeitraum des Aushebens durch­fahrenen Rast von Kurvenfolgerhebel auf der Kurve der Kurvenscheibe stillstehen, kommt es durch die Aushebebewegung der Laufschienen zu einer Auslenkbewegung der Laufwagen in Richtung auf die Anlenkpunkte der Kurvenfolgerhebel zu, da die Anlenkstangen in ihren Anlenkpunkten an den Laufwagen auf einem Kreisbogen um die Anlenkpunkte der Kurven­folgerhebel an den Anlenkstangen bewegt werden. Die unterschiedlichen Werkzeuge verlangen jedoch eine, wenn auch unterschiedlich lange, ver­tikal geführte Aushebebewegung.In our German patent application P 39 05 068.8 there is a transfer device in a hybrid press or the like. System has been described, in which the transfer device has two rails that extend on opposite sides of the plunger and tools in the direction of the sheet metal parts transport. Carriages are slidably mounted on the running rails. Carriages located opposite each other are connected to each other by a cross-beam. The crossbeams as a whole can be uncoupled from the carriages by a transverse movement of the running rails in order to be able to exchange the holder means attached to them when changing tools. The carriages each one rail are still connected to each other so that the first pair of carriages connected by a cross-beam with the third and each next but one pair of carriages as well as the second pair of carriages with the fourth and each next but one pair of carriages un Execute or achieve different movements when reversing and different standstill positions between the tools. The movements are picked up by rotating cam discs. The runners are raised to lift the formed sheet metal part / workpieces from the lower tool parts, during the transfer movement, and to deposit the sheet metal parts in the next stage. The first and second carriages on each running rail are connected to a cam follower lever attached to the respective cam disc by means of link rods. Since the articulation points of the cam follower levers on the articulation rods stand still due to a rest of the cam follower lever on the cam on the cam during the period of lifting, the lifting movement of the running rails leads to a deflection movement of the carriages in the direction of the articulation points of the cam follower levers, since the articulation rods are moved in their articulation points on the carriage on a circular arc around the articulation points of the cam follower levers on the articulation rods. The different tools, however, require a vertical movement, albeit of different lengths.

Von daher ist es Aufgabe der Erfindung, die Auslenkbewegung der Laufwagen zu kompensieren.It is therefore an object of the invention to compensate for the deflection movement of the carriage.

Diese Aufgabe ist bei Einrichtungen nach den Oberbegriffen der An­sprüche 1 und 2 gelöst durch die diese kennzeichnenden Merkmale.This object is achieved in devices according to the preambles of claims 1 and 2 by the features which characterize them.

Von besonderem Vorteil hierbei ist, daß die Korrekturbereiche für die Fertigung der Kurvenscheiben vorgebbar sind und somit keine zu­sätzlichen baulichen Maßnahmen erfordern.It is particularly advantageous here that the correction areas for the production of the cam disks can be predetermined and therefore do not require any additional structural measures.

Anhand der Zeichnung soll nun im folgenden eine Ausführungsbei­spiel der Erfindung erläutert werden.An exemplary embodiment of the invention will now be explained below with reference to the drawing.

Es zeigen:

  • Fig. 1 einen Umformbereich einer Presse sowie den Antriebsbe­reich und einen Teilbereich einer Umsetzeinrichtung,
  • Fig. 2 eine Schnittdarstellung entsprechend dem in Fig. 1 angege­benen Schnittverlauf II-II und
  • Fig. 3 die Umsetzbewegungen und Rücklaufbewegungen der Haltemit­tel an einem Laufwagen für die Blechteile.
Show it:
  • 1 shows a forming area of a press as well as the drive area and a partial area of a transfer device,
  • Fig. 2 is a sectional view corresponding to the section shown in Fig. 1 II-II and
  • Fig. 3, the conversion movements and return movements of the holding means on a carriage for the sheet metal parts.

An dem Stößel 2 der Presse 1 ist ein Werkzeugoberteil eines Werk­zeugs 4 zur Umformung von Blechteilen 3 angebracht. Die Blechteile 3 sind in den Bearbeitungsstufen, diese sind charakterisiert durch die Werkzeuge 4, ggf. unter Zwischenablage auf Stützen 5 bewegbar. Hier­für ist eine Umsetzeinrichtung vorgesehen, die insgesamt mit der Posi­tionsziffer 6 angedeutet ist. Diese weist eine oder zwei Laufschienen 7, 7′ auf, von denen die vor Stößel 2 und Werkzeug 4 befindliche Lauf­schiene 7 erkennbar ist. Die Laufschienen 7, 7′ sind in Geradführun­gen 23 an Pressenständern geführt und durch Abgriff je einer Kurven­scheibe 18 vermittels Kurvenfolgerhebel 16 und Bewegungsantrieb eine durch die Presse 1 hindurchgeführten Längsstange 14 und Umlenkeinrich­tungen 13 oberhalb der Geradführungen 23 heb- und senkbar. Der Anlenk­punkt des Kurvenfolgerhebels 16 an der Längsstange 14 ist mit 22 posi­tioniert. Je Laufschiene 7 bzw. 7′ sind jeweils eine Kurvenscheibe 18 und die Mittel 13, 14, 22 zum Übertragen der Bewegungen vorhanden.A tool upper part of a tool 4 for forming sheet metal parts 3 is attached to the ram 2 of the press 1. The sheet metal parts 3 are in the processing stages, which are characterized by the tools 4, optionally with intermediate storage on supports 5. For this purpose, a conversion device is provided, which is indicated overall by the item number 6. This has one or two running rails 7, 7 ', of which the running rail 7 located in front of tappet 2 and tool 4 can be seen. The rails 7, 7 'are guided in straight guides 23 on press stands and by tapping a cam 18 by means of cam follower 16 and motion drive a longitudinal rod 14 and deflection devices 13 passed through the press 1 above the straight guides 23 can be raised and lowered. The articulation point of the cam follower lever 16 on the longitudinal rod 14 is positioned at 22. Each track 7 and 7 'each have a cam 18 and the means 13, 14, 22 for transmitting the movements.

Auf den Laufschienen 7, 7′ sind Laufwagen 8 bzw. 9 verschiebbar und mit den Laufschienen 7, 7′ heb- und senkbar angeordnet. Fig. 1 zeigt die Laufwagen 8, 9 in einer Stellung während der Rücklaufbewe­gung, die in Fig. 3 mit 50 positioniert ist. Die Laufwagen 9 sind mit Haltemitteln versehen zum Aufnehmen, Transport und Ablegen der Blech­teile 3. Die Haltemittel bestehen aus einer jeweils einen auf der vor­deren und der hinteren Laufschiene 7, 7′ verfahrbaren Laufwagen 9, 9′ verbindenden Quertraverse 11 und einer an dieser angebrachten Sauger­spinne 12.On the rails 7, 7 'carriages 8 and 9 are displaceable and arranged with the rails 7, 7' raised and lowered. FIG. 1 shows the carriages 8, 9 in a position during the return movement, which is positioned at 50 in FIG. 3. The carriages 9 are provided with holding means for receiving, transporting and storing the sheet metal parts 3. The holding means consist of a respective one on the front and rear rails 7, 7 'movable carriage 9, 9' connecting cross-beam 11 and a suction spider attached to this 12.

Die Laufwagen 8 jeder Laufschiene 7, 7′ dienen der Überbrückung des Abstands zwischen dem Kurvenfolgerhebel 36 und dem zweiten, eine Saugerspinne 12 tragenden Laufwagenpaar. Die Kurvenfolgerhebel 36, 37 sind an Kurvenscheiben 41, 42 gelegt und werden, wie auch die Kurven­folgerhebel, 16, 16′ vermittels Druckzylinder oder dementsprechende Stellmittel zur Anlage an den Kurvenbahnen gehalten. Der Bewegungsab­griff der Kurvenfolgerhebel 36, 37 erfolgt in den Anlenkpunkten 34, 35 vermittels Anlenkstangen 26 für die Laufwagen 8 und Anlenkstangen 31 für die Laufwagen 9. Werden nun für das Aufnehmen und das Ablegen der Blechteile 3 aus den bzw. in die Werkzeugunterteile beide Laufschienen 7, 7′ synchron angehoben, kommt es zu einem Versatz der Laufwagen 8, 9 und der Folgelaufwagen, die über entsprechende Anlenkstangen mit den angelenkten Laufwagen 8, 9 verbunden sind. Der Versatz des Laufwagens 8 ist durch die darüber eingezeichnete neue Lage 8′ angedeutet worden. Der Versatz ist um so größer, je näher der angelenkte Laufwagen 8 bzw. 9 dem Anlenkpunkt 34 bzw. 35 liegt, d.h., je kürzer die Anlenkstangen 26 bzw. 31 sind. Die Anlenkpunkte dieser Anlenkstangen 26, 31 an den Laufwagen 8, 9 sind bei 27 bzw. 32 angedeutet. Mit 7˝ ist eine angehobene Laufschiene 7 bzw. 7′ positioniert. Die Bewegung der Laufwagen 8, 9 und der Folgelaufwagen ist für den Laufwagen 8 mit 28 und für den Laufwagen 9 mit 33′ angedeutet. Die Bewegung des Laufwagens 9 aus der Entnahmeposition für das Blechteil 3 in dem Werkzeugunterteil in die angehobene Transportposition ist mittig zum Werkzeug 4 mit dem Kreisbogen 33 angegeben.The carriage 8 of each rail 7, 7 'serve to bridge the distance between the cam follower lever 36 and the second pair of carriages carrying a suction spider 12. The cam follower levers 36, 37 are placed on cams 41, 42 and, like the cam follower levers 16, 16 ', are held by means of pressure cylinders or corresponding actuating means for bearing against the cam tracks. The movement of the cam follower levers 36, 37 takes place in the articulation points 34, 35 by means of articulation rods 26 for the carriages 8 and articulation rods 31 for the carriages 9 , 7 'raised synchronously, there is an offset of the carriages 8, 9 and the follower carriage, which are connected to the articulated carriages 8, 9 via corresponding link rods. The offset of the carriage 8 is due to the new one drawn above Location 8 'has been indicated. The offset is greater the closer the articulated carriage 8 or 9 is to the articulation point 34 or 35, ie the shorter the articulation rods 26 and 31 are. The articulation points of these articulation rods 26, 31 on the carriages 8, 9 are indicated at 27 and 32, respectively. With 7˝ a raised rail 7 or 7 'is positioned. The movement of the carriage 8, 9 and the follower carriage is indicated for the carriage 8 with 28 and for the carriage 9 with 33 '. The movement of the carriage 9 from the removal position for the sheet metal part 3 in the lower tool part into the raised transport position is indicated in the middle of the tool 4 with the circular arc 33.

Mit Fig. 2 sind die Lagerstellen der Kurvenscheiben 41, 42 und 18 und der Kurvenfolgerhebel 36, 37 und 16 gezeigt. Die Kurvenscheiben 41, 42, 18 sind auf der Nabe 48 des Antriebzahnrades 47 drehsicher aufgesetzt. Die Lagerung des Zahnrades 47 über dei Nabe 48 erfolgt in z.B. Ständerblechen 46, ebenso die Lagerung der Kurvenfolgerhebel 36, 37, 16 in der geteilten Wellenlagerung 21a, 21b. Die Lagerung der An­lenkstangen 14 für das Heben/Senken erfolgt in dem Anlenkpunkt 22, die der Anlenkstangen 26, 31 in den Anlenkpunkten 34, 35.2 shows the bearing points of the cam disks 41, 42 and 18 and the cam follower levers 36, 37 and 16. The cams 41, 42, 18 are mounted on the hub 48 of the drive gear 47 in a rotationally secure manner. The gear 47 is supported by the hub 48 in e.g. Stand plates 46, as well as the bearing of the cam follower levers 36, 37, 16 in the split shaft bearing 21a, 21b. The articulation rods 14 for lifting / lowering are stored in the articulation point 22, and those of the articulation rods 26, 31 in the articulation points 34, 35.

In der Darstellung der Fig. 3 ist die Umsetzbewegung der Sauger­spinne 12 bzw. der Laufwagen 8, 9 aus Fig. 1 mit 49, deren Rücklaufbe­wegung mit 50 angegeben. Die Umsetzbewegung 49 beginnt mit einer line­aren, vertikalen Aushebebewegung 52, die durch das größtmöglichste Maß 51 aller verwendbaren Werkzeuge 4 vorgegeben ist. Das Blechteil 3 muß in dieser vertikalen Bewegung 52 aus dem Werkzeugunterteil heraus­gehoben werden. Mit 51′ ist die Bewegung der unteren Kante des Blech­teils 3 erkennbar. Diese anfängliche vertikale Bewegung 52 wird da­durch bewirkt, daß die Kurvenscheiben 41, 42 für den Transfer der Werkstücke 3 in mit 45 angedeuteten Bereichen korrigiert sind gegen­über einer Kurvenform, mit der eine solche Bewegung bislang nicht mög­lich war, d.h., die Kurvenbahnen der Kurvenscheiben 41, 42 weisen ge­genüber einer Rastbahn herkömmlicher Art ein Unter- oder Übermaß auf, wobei das Unter- bzw. Übermaß hierbei abhängig ist von der Lage des Drehpunktes des zugehörenden Kurvenfolgerhebels an dem Pressenge­stell.3, the transfer movement of the suction spider 12 or the carriages 8, 9 from FIG. 1 is indicated by 49, the return movement of which is indicated by 50. The transfer movement 49 begins with a linear, vertical lifting movement 52, which is predetermined by the largest possible dimension 51 of all the tools 4 that can be used. The sheet metal part 3 must be lifted out of the lower tool part in this vertical movement 52. With 51 'the movement of the lower edge of the sheet metal part 3 can be seen. This initial vertical movement 52 is brought about by the fact that the cam disks 41, 42 for the transfer of the workpieces 3 are corrected in areas indicated by 45 compared to a curve shape with which such a movement has not previously been possible, ie the cam tracks of the cam disks 41, 42 have an undersize or oversize compared to a conventional locking path, the undersize or oversize being dependent on the position of the pivot point of the associated cam follower lever on the press frame.

Claims (2)

1. Umsetzeinrichtung in einer Transferpresse, Großteilstufenpres­se, Pressen-Anlage o.dgl. Umformmaschine mit zumindest einem auf- und abbewegbaren Stößel für die Umformung von Blechteilen vermittels Werk­zeugen, wobei die im Takt der Umformmaschine bewegbare Umsetzeinrich­tung zumindest eine heb- und senkbare Laufschiene aufweist, hinter, ggf. vor Stößel und Werkzeug in Längsrichtung der Umformmaschine sich erstreckend, auf denen Laufwagen verschiebbar angeordnet sind mit Haltemitteln zum Umsetzen der Blechteile in den Bearbeitungsstu­fen, wobei die Umsetzbewegung der Laufwagen über Gestänge von drehge­triebenen Kurvenscheiben abgegriffen wird, dadurch gekennzeich­net, daß die Kurvenscheiben (41, 42) für die Umsetzbewegung (49) der Laufwagen (8, 9) Korrekturbereiche (45) aufweisen zum Längenausg­leich bei einer Hebe- (52) oder Senkbewegung der Laufschienen (7,7′), die zur Aufnahme und/oder zur Ablage von Blechteilen (3) erfolgt.1. Transfer device in a transfer press, large section press, press system or the like. Forming machine with at least one plunger that can be moved up and down for the forming of sheet metal parts by means of tools, the converting device that can be moved in time with the forming machine having at least one lifting and lowering running rail, behind, possibly extending in front of the plunger and tool in the longitudinal direction of the forming machine which carriages are slidably arranged with holding means for moving the sheet metal parts in the processing stages, the moving movement of the running carriages being tapped off by rods of rotary cam plates, characterized in that the cam plates (41, 42) for the moving movement (49) of the carriages (8, 9) Correction areas (45) have to compensate for the length during a lifting (52) or lowering movement of the running rails (7,7 '), which takes place for receiving and / or storing sheet metal parts (3). 2. Umsetzeinrichtung in einer Transferpresse, Großteilstufenpres­se, Pressen-Anlage o.dgl. Umformmaschine mit zumindest einem auf- und abbewegbaren Stößel für die Umformung von Blechteilen vermittels Werk­zeugen, wobei die im Takt der Umformmaschine bewegbare Umsetzeinrich­tung zwei heb- und senkbare Laufschienen aufweist, vor und hinter Stößel und Werkzeug sich erstreckend, auf denen Laufwagen in unter­schiedlichen Bewegungen verschiebbar angeordnet sind mit Haltemitteln zum Umsetzen der Blechteile in den Bearbeitungsstufen, wobei die Um­setzbewegungen der Laufwagen über Gestänge von drehgetriebenen Kurven­scheiben abgegriffen werden, dadurch gekennzeichnet, daß jede der Kurvenscheiben (41, 42) für die Umsetzbewegung (49) der Laufwagen (8, 9) Korrekturbereiche (45) aufweist zum Längenausgleich bei einer Hebe- (52) oder Senkbewegung der Laufschienen (7, 7′), die zur Aufnah­me und/oder zur Ablage von Blechteilen (3) erfolgt.2. Transfer device in a transfer press, large section press, press system or the like. Forming machine with at least one plunger that can be moved up and down for the forming of sheet metal parts by means of tools, the converting device that can be moved in time with the forming machine having two lifting and lowering rails, extending in front of and behind the plunger and tool, on which carriages are slidably arranged in different movements are provided with holding means for moving the sheet metal parts in the processing stages, the moving movements of the carriages being tapped off by rods of rotary cam plates, characterized in that each of the cam plates (41, 42) for the moving movement (49) of the carriages (8, 9) correction areas (45) for length compensation during a lifting (52) or lowering movement of the running rails (7, 7 '), which takes place for receiving and / or storing sheet metal parts (3).
EP90106572A 1989-04-26 1990-04-05 Transfer device in a transfer press or metal forming machine Expired - Lifetime EP0394723B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913663 1989-04-26
DE3913663A DE3913663A1 (en) 1989-04-26 1989-04-26 CONVERSION DEVICE IN A TRANSFER PRESS OR THE LIKE. FORMING MACHINE

Publications (2)

Publication Number Publication Date
EP0394723A1 true EP0394723A1 (en) 1990-10-31
EP0394723B1 EP0394723B1 (en) 1992-12-02

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Application Number Title Priority Date Filing Date
EP90106572A Expired - Lifetime EP0394723B1 (en) 1989-04-26 1990-04-05 Transfer device in a transfer press or metal forming machine

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EP (1) EP0394723B1 (en)
DE (2) DE3913663A1 (en)
ES (1) ES2036380T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032340A1 (en) * 1990-10-09 1992-04-16 Erfurt Umformtechnik Gmbh Three=dimensional transfer device for workpieces - has oscillating rail mounted on transversely movable slide
US5718152A (en) * 1994-07-20 1998-02-17 Schuler Pressen Gmbh & Co. Press with gripping rails and pretensioning device
US5927139A (en) * 1996-03-01 1999-07-27 Komatsu Ltd. Oil leakage preventive device for transfer feeder
EP1072335A2 (en) * 1999-07-27 2001-01-31 Müller Weingarten AG Transfer drive for a press

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110215A1 (en) * 1991-03-28 1992-10-01 Mueller Weingarten Maschf TRANSPORTATION DEVICE FOR TRANSPORTING LARGE-SIZED PARTS IN A STEP PRESS
DE4218818A1 (en) * 1992-06-06 1993-12-09 Mueller Weingarten Maschf Transport device
US5730278A (en) * 1993-01-21 1998-03-24 Kabushiki Kaisha Komatsu Transfer feeder
DE4309643C2 (en) * 1993-03-25 2002-06-13 Schuler Pressen Gmbh & Co Transfer device for workpiece transport

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202882A2 (en) * 1985-05-17 1986-11-26 Avondale Industries, Inc. Transfer feed mechanism for power presses
DE3725310A1 (en) * 1986-08-08 1988-02-11 Sumitomo Heavy Industries MECHANICAL REPLACEMENT

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202882A2 (en) * 1985-05-17 1986-11-26 Avondale Industries, Inc. Transfer feed mechanism for power presses
DE3725310A1 (en) * 1986-08-08 1988-02-11 Sumitomo Heavy Industries MECHANICAL REPLACEMENT

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032340A1 (en) * 1990-10-09 1992-04-16 Erfurt Umformtechnik Gmbh Three=dimensional transfer device for workpieces - has oscillating rail mounted on transversely movable slide
US5718152A (en) * 1994-07-20 1998-02-17 Schuler Pressen Gmbh & Co. Press with gripping rails and pretensioning device
US5927139A (en) * 1996-03-01 1999-07-27 Komatsu Ltd. Oil leakage preventive device for transfer feeder
EP1072335A2 (en) * 1999-07-27 2001-01-31 Müller Weingarten AG Transfer drive for a press
EP1072335A3 (en) * 1999-07-27 2001-11-07 Müller Weingarten AG Transfer drive for a press
US6338264B1 (en) 1999-07-27 2002-01-15 Mueller Weingarten Ag Transfer drive for a press

Also Published As

Publication number Publication date
ES2036380T3 (en) 1993-05-16
EP0394723B1 (en) 1992-12-02
DE59000527D1 (en) 1993-01-14
DE3913663A1 (en) 1990-10-31

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