EP0394723B1 - Transfer device in a transfer press or metal forming machine - Google Patents
Transfer device in a transfer press or metal forming machine Download PDFInfo
- Publication number
- EP0394723B1 EP0394723B1 EP90106572A EP90106572A EP0394723B1 EP 0394723 B1 EP0394723 B1 EP 0394723B1 EP 90106572 A EP90106572 A EP 90106572A EP 90106572 A EP90106572 A EP 90106572A EP 0394723 B1 EP0394723 B1 EP 0394723B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carriages
- transfer
- movement
- press
- 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
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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
- B21D43/052—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 a transfer device of the type specified in the preamble of claim 1 and claim 2, as described e.g. is known from DE-A-3905069.
- 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 can be raised and lowered by tapping off a cam plate 18 by means of cam follower lever 16 and movement drive of a longitudinal rod 14 and deflection devices 13 passed through the press 1 above the straight guides 23.
- 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.
Description
Die Erfindung betrifft eine Umsetzeinrichtung der im Oberbegriff des Anspruchs 1 und des Anspruchs 2 angegebenen Art wie sie z.B. aus DE-A-3905069 bekannt ist.The invention relates to a transfer device of the type specified in the preamble of claim 1 and claim 2, as described e.g. is known from DE-A-3905069.
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 DE-A-3905068 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 DE-A-3905068 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.
- 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 einer 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
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
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
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 die 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
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
Claims (2)
- Transfer device in a transfer press (1), large-part multiple die press, press installation or similar metal-forming machine, having at least one ram (2) which can be moved up and down for the forming of sheet metal parts (3) by means of tools (4), the transfer device, which can be moved in phase with the metal-forming machine, having at least one running rail (7,7′) which can be lifted or lowered extending after or before the ram (2) and the tool (4) in the longitudinal direction of the metal-forming machine (1), on which running rails carriages (8,9) are arranged so as to be displaceable with retaining means (12) for transferring the sheet metal parts (3) in the processing stages, the transfer movement (49) of the carriages (8,9) being picked up via linkages (14, 26) by cam discs (41,42) driven in rotation, characterised in that the cam discs (41, 42) for the transfer movement (49) of the carriages (8,9) have correction regions (45) for longitudinal compensation during a lifting (52) or lowering movement of the running rails (7, 7′), which movement takes place for receiving and/or depositing sheet metal parts (3).
- Transfer device in a transfer press (1), large-part multiple die press, press installation or similar metal-forming machine, having at least one ram (2) which can be moved up and down for the forming of sheet metal parts (3) by means of tools (4), the transfer device, which can be moved in phase with the metal-forming machine, having two running rails (7,7′) which can be lifted or lowered extending before and after the ram (2) and the tool (4) on which running rails carriages (8,9) are arranged so as to be displaceable in different movements with retaining means (12) for transferring the sheet metal parts (3) in the processing stages, the transfer movement (49) of the carriages (8,9) being picked up via linkages (14, 26) by cam discs (41,42) driven in rotation, characterised in that each of the cam discs (41, 42) for the transfer movement (49) of the carriages (8,9) have correction regions (45) for longitudinal compensation during a lifting (52) or lowering movement of the running rails (7, 7′), which movement takes place for receiving and/or depositing sheet metal parts (3).
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 EP0394723A1 (en) | 1990-10-31 |
| EP0394723B1 true EP0394723B1 (en) | 1992-12-02 |
Family
ID=6379448
Family Applications (1)
| 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 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0394723B1 (en) |
| DE (2) | DE3913663A1 (en) |
| ES (1) | ES2036380T3 (en) |
Families Citing this family (8)
| 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 |
| 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 |
| DE4425560A1 (en) * | 1994-07-20 | 1996-01-25 | Schuler Pressen Gmbh & Co | Press with gripper rails |
| JP3424884B2 (en) * | 1996-03-01 | 2003-07-07 | 株式会社小松製作所 | Oil leak prevention device for transfer feeder |
| ES2212942T3 (en) * | 1999-07-27 | 2004-08-16 | Muller Weingarten Ag | TRANSFER DRIVE FOR A PRESS. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630461A (en) * | 1985-05-17 | 1986-12-23 | Avondale Industries, Inc. | Transfer feed mechanism for power presses |
| JPS6341304A (en) * | 1986-08-08 | 1988-02-22 | Sumitomo Heavy Ind Ltd | Mechanical transfer feeder |
-
1989
- 1989-04-26 DE DE3913663A patent/DE3913663A1/en not_active Withdrawn
-
1990
- 1990-04-05 EP EP90106572A patent/EP0394723B1/en not_active Expired - Lifetime
- 1990-04-05 ES ES199090106572T patent/ES2036380T3/en not_active Expired - Lifetime
- 1990-04-05 DE DE9090106572T patent/DE59000527D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0394723A1 (en) | 1990-10-31 |
| DE3913663A1 (en) | 1990-10-31 |
| ES2036380T3 (en) | 1993-05-16 |
| DE59000527D1 (en) | 1993-01-14 |
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