EP0693332B1 - Press with transfer bars - Google Patents

Press with transfer bars Download PDF

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Publication number
EP0693332B1
EP0693332B1 EP95111056A EP95111056A EP0693332B1 EP 0693332 B1 EP0693332 B1 EP 0693332B1 EP 95111056 A EP95111056 A EP 95111056A EP 95111056 A EP95111056 A EP 95111056A EP 0693332 B1 EP0693332 B1 EP 0693332B1
Authority
EP
European Patent Office
Prior art keywords
press
preloading
cam
rollers
rocker lever
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
EP95111056A
Other languages
German (de)
French (fr)
Other versions
EP0693332A1 (en
Inventor
Karl Thudium
Andreas Dangelmayr
Dieter Wolz
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 EP0693332A1 publication Critical patent/EP0693332A1/en
Application granted granted Critical
Publication of EP0693332B1 publication Critical patent/EP0693332B1/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
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2107—Follower

Definitions

  • the invention relates to a device for moving workpieces in the processing stations a press according to the preamble of claim 1 defined art.
  • the workpiece transport devices which are often designed as gripper rails are moved accordingly quickly. Indeed arbitrarily high speeds are not possible, since the workpiece transport devices mostly be moved over cams, whereby on the cams Lever bear on the contour of the cam scan. The resulting movement the lever is then in the desired position Direction for picking up or transporting the workpiece steered through appropriate facilities.
  • DE 38 32 499 discloses a press with gripper rails known, which provided with double cams is, the contour of the double cams of one Lever is scanned.
  • a press line is known from DE-OS 21 12 590, in the individual units of the press line by means of conveyors arranged below the floor level can be moved.
  • the device described is not used for Moving workpieces in the processing stations of presses, but only for moving whole Units of a press line.
  • DE-A-37 25 310 (State of the art) is a mechanical transfer device described with two parallel transport bars with gripping means for moving objects through repeated closing, lifting, transfer, lowering and opening as movements for the Transport bars. This is driven by a mechanism made of a rotatable camshaft, of these carried cams and with these interacting rocker arms. The rocker arms are pressed against the control cams by disc springs held. This is intended to achieve a smooth operation.
  • the transfer facility is to be designed for a maximum speed. When the speed is exceeded the rocker arms are lifted off the control cams and therefore not definable periods in which unwanted changes in position during the transfer the implementation and storage of the objects occur in the processing stages.
  • the present invention is therefore based on the object a press with gripper rails for moving to provide workpieces in the processing stations, the mentioned disadvantages of the prior art eliminated, especially the economically working and disruptions in workpiece transport between excludes the individual processing stations of a press.
  • the cams By pressing one of the two rollers against the Cam disc can have any play between rocker arms and rollers and the cams are avoided, so that the entire workpiece transport device works flawlessly.
  • the cams By providing one Biasing device, which one of the two roles against presses the cams, the cams can are operated at a relatively high speed, so that the throughput through the press can be increased and the press thus more economical is working.
  • the 1 and 2 is a double cam 1 shown, the two individual cams 2 and 3.
  • the individual cams 2, 3 are arranged on a common shaft 4, so that they move synchronously.
  • the rocker arm 7 itself is rotatable at one point 10 stored.
  • the axis of rotation of the rocker arm 7 extends parallel to the axial direction of the shaft 4.
  • the rollers 5, 6 are each rotatable on bolts 11, 12 stored.
  • the pin of the roller 5 is an eccentric pin 11 and via a link 13 with a pretensioning device connected, which in the present embodiment executed as a hydraulic cylinder 14 is.
  • the biasing device 14, i.e. the hydraulic cylinder, is here by means of a bearing block 15 with the Rocker arm 7 firmly connected, the bottom of the hydraulic cylinder 14, i.e. that of the piston rod 16 of the hydraulic cylinder 14 facing away, rotatable is mounted on the bearing block 15.
  • the end of the piston rod facing away from the hydraulic cylinder 14 16 is also provided with a swivel joint, so that the connection between the link 13 and the piston rod 16 of the hydraulic cylinder 14 by means of a bearing that pivots the link 13 enables, takes place.
  • Fig. 2 shows a side view of the arrangement according to the Fig. 1.
  • the pretensioning device 14 also advantageous as a pneumatic cylinder or be designed as a mechanical device. It is only important that a sufficiently large pressure with the biasing device 14 is achieved, which the Rollers 5, 6 against the peripheral surfaces of the double cam 1 presses under tension and thus the game between the double cam 1 and the rollers 5, 6 compensates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Transmission Devices (AREA)

Description

Die Erfindung betrifft eine Einrichtung zum Umsetzen von Werkstücken in den Bearbeitungsstationen einer Presse nach der im Oberbegriff des Anspruchs 1 näher definierten Art.The invention relates to a device for moving workpieces in the processing stations a press according to the preamble of claim 1 defined art.

Um Pressen möglichst effektiv betreiben zu können, soll ein zu fertigendes Werkstück diese mit möglichst hoher Geschwindigkeit durchlaufen.In order to operate presses as effectively as possible, If a workpiece is to be manufactured, go through at high speed.

Um dies zu ermöglichen, müssen die Werkstücktransporteinrichtungen, die oftmals als Greiferschienen ausgeführt sind, entsprechend schnell bewegt werden. Allerdings sind keine beliebig hohen Geschwindigkeiten möglich, da die Werkstücktransporteinrichtungen meist über Kurvenscheiben bewegt werden, wobei an den Kurvenscheiben Hebel anliegen, welche die Kontur der Kurvenscheibe abtasten. Die hieraus resultierende Bewegung der Hebel wird anschließend in die gewünschte Richtung zum Aufnehmen oder Transportieren des Werkstückes über geeignete Einrichtungen gelenkt.In order to make this possible, the workpiece transport devices, which are often designed as gripper rails are moved accordingly quickly. Indeed arbitrarily high speeds are not possible, since the workpiece transport devices mostly be moved over cams, whereby on the cams Lever bear on the contour of the cam scan. The resulting movement the lever is then in the desired position Direction for picking up or transporting the workpiece steered through appropriate facilities.

Hierbei tritt das Problem auf, daß bei einer zu hohen Drehzahl der Kurvenscheiben die an diesen anliegenden Hebel nicht mehr vollständig und/oder permanent an der Kurvenscheibe anliegen, sondern aufgrund der auftretenden Flieh- und Trägheitskräfte von der Kurvenscheibe abheben, so daß ein kontrollierter Werkstücktransport innerhalb der Presse nicht mehr möglich ist.The problem that arises here is that a too high Speed of the cams that are attached to them Lever no longer completely and / or permanently on the Cam disc but because of the occurring Centrifugal and inertial forces from the cam take off so that a controlled workpiece transport is no longer possible within the press.

Aus der DE 38 32 499 ist eine Presse mit Greiferschienen bekannt, welche mit Doppelkurvenscheiben versehen ist, wobei die Kontur der Doppelkurvenscheiben von einem Hebel abgetastet wird.DE 38 32 499 discloses a press with gripper rails known, which provided with double cams is, the contour of the double cams of one Lever is scanned.

Bei der Anordnung nach der genannten Druckschrift tritt allerdings das Problem auf, daß aufgrund von Fertigungstoleranzen, sowohl der Kurvenscheiben als auch des Hebels, ein geringes Spiel beim Abtasten der Kurvenscheiben unvermeidlich ist, wodurch es zu Ungenauigkeiten beim Transport von Werkstücken zwischen den einzelnen Stationen einer Presse kommen kann.In the arrangement according to the document mentioned however, the problem arises that due to Manufacturing tolerances, both of the cams and also the lever, a little play when scanning the Cam is inevitable, causing inaccuracies when transporting workpieces between the individual stations of a press.

Des weiteren besteht bei einer verhältnismäßig hohen Drehzahl der Doppelkurvenscheiben die Gefahr, daß, wie bereits erwähnt, der Hebel nicht mehr permanent an der Doppelkurvenscheibe anliegt und diese abtastet, so daß auch hierdurch ein störungsfreier Transport der Werkstücke zwischen den einzelnen Stationen einer Presse nicht mehr gewährleistet ist.Furthermore, there is a relatively high Speed of the double cams the danger that how already mentioned, the lever is no longer permanently on the Double cam disc is present and scanned, so that this also ensures trouble-free transport of the workpieces between the individual stations of a press is no longer guaranteed.

Aus der DE-OS 21 12 590 ist eine Pressenstraße bekannt, bei der einzelne Baueinheiten der Pressenstraße durch unter der Bodenebene angeordnete Fördereinrichtungen verfahren werden können.A press line is known from DE-OS 21 12 590, in the individual units of the press line by means of conveyors arranged below the floor level can be moved.

In der genannten Offenlegungsschrift ist eine Kurvenscheibe beschrieben, an welcher eine mit einer Andrückrolle versehene Schwinge anliegt, welche von einem Pneumatikzylinder gegen die Kurvenscheibe gedrückt wird.In the aforementioned publication there is a cam described, on which one with a pressure roller provided rocker abuts which of a Pneumatic cylinder pressed against the cam disc becomes.

Die beschriebene Vorrichtung dient jedoch nicht zum Umsetzen von Werkstücken in den Bearbeitungsstationen von Pressen, sondern lediglich zum Verschieben ganzer Baueinheiten einer Pressenstaße. However, the device described is not used for Moving workpieces in the processing stations of presses, but only for moving whole Units of a press line.

Mit der DE-A-37 25 310 (Nächster Stand der Technik) ist eine mechanische Transfereinrichtung beschrieben mit zwei parallelen Transportstangen mit Greifmitteln zum Umsetzen von Gegenständen durch wiederholtes Schließen, Heben, Transfer, Senken und Öffnen als Bewegungen für die Transportstangen. Zum Antreiben hierfür dient ein Mechanismus aus drehbarer Nockenwelle, von dieser getragenen Steuerkurven und mit diesen zusammenwirkenden Schwinghebeln. Die Schwinghebel werden von Tellerfedern in Andruckberührung mit den Steuerkurven gehalten. Hierdurch soll eine ruckfreie Arbeitsweise erreicht werden. Die Transfereinrichtung ist auf eine maximale Geschwindigkeit auszulegen. Bei Überschreiten der Geschwindigkeit kommt es zu einem Abheben der Schwinghebel von den Steuerkurven und somit zu nicht bestimmbaren Zeiträumen, in denen ungewollte Positionsveränderungen im Transfer während des Umsetzens und der Ablage der Gegenstände in den Bearbeitungsstufen auftreten. With DE-A-37 25 310 (State of the art) is a mechanical transfer device described with two parallel transport bars with gripping means for moving objects through repeated closing, lifting, transfer, lowering and opening as movements for the Transport bars. This is driven by a mechanism made of a rotatable camshaft, of these carried cams and with these interacting rocker arms. The rocker arms are pressed against the control cams by disc springs held. This is intended to achieve a smooth operation. The transfer facility is to be designed for a maximum speed. When the speed is exceeded the rocker arms are lifted off the control cams and therefore not definable periods in which unwanted changes in position during the transfer the implementation and storage of the objects occur in the processing stages.

Der Vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Presse mit Greiferschienen zum Umsetzen von Werkstücken in den Bearbeitungsstationen vorzusehen, die die genannten Nachteile des Standes der Technik beseitigt, insbesondere die wirtschaftlich arbeitet und Störungen des Werkstücktransportes zwischen den einzelnen Bearbeitungsstationen einer Presse ausschließt.The present invention is therefore based on the object a press with gripper rails for moving to provide workpieces in the processing stations, the mentioned disadvantages of the prior art eliminated, especially the economically working and disruptions in workpiece transport between excludes the individual processing stations of a press.

Erfindungsgemäß wird diese Aufgabe durch die im Anspruch 1 genannten Merkmale gelöst.According to the invention, this object is achieved by the Claim 1 mentioned features solved.

Durch das Andrücken einer der beiden Rollen gegen die Kurvenscheibe kann jegliches Spiel zwischen Schwinghebel und Rollen und den Kurvenscheiben Vermieden werden, so daß auch die gesamte Werkstücktransporteinrichtung fehlerfrei arbeitet. Durch das Vorsehen einer Vorspanneinrichtung, welche eine der beiden Rollen gegen die Kurvenscheiben drückt, können die Kurvenscheiben mit Verhältnismäßig hoher Drehzahl betrieben werden, so daß der Durchsatz durch die Presse hindurch erhöht werden kann und die Presse somit wirtschaftlicher arbeitet.By pressing one of the two rollers against the Cam disc can have any play between rocker arms and rollers and the cams are avoided, so that the entire workpiece transport device works flawlessly. By providing one Biasing device, which one of the two roles against presses the cams, the cams can are operated at a relatively high speed, so that the throughput through the press can be increased and the press thus more economical is working.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und den nachfolgend anhand der Zeichnung prinzipmäßig dargestellten Ausführungsbeispielen.Advantageous refinements and developments of Invention result from the dependent claims and the shown in principle below with reference to the drawing Embodiments.

Es zeigt:

Fig. 1
eine Ansicht eines Schwinghebels, der eine Doppelkurvenscheibe abtastet; und
Fig. 2
eine Seitenansicht der Fig. 1.
It shows:
Fig. 1
a view of a rocker arm that scans a double cam; and
Fig. 2
2 shows a side view of FIG. 1.

Bezugnehmend auf Fig. 1 und 2 ist eine Doppelkurvenscheibe 1 dargestellt, die zwei einzelne Kurvenscheiben 2 und 3 aufweist. Die Einzelkurvenscheiben 2, 3 sind auf einer gemeinsamen Welle 4 angeordnet, so daß sie sich synchron bewegen.1 and 2 is a double cam 1 shown, the two individual cams 2 and 3. The individual cams 2, 3 are arranged on a common shaft 4, so that they move synchronously.

Zum Abtasten der Konturen der Doppelkurvenscheibe 1 sind zwei Rollen 5, 6 vorgesehen, welche an den jeweiligen Einzelkurvenscheiben 2, 3 anliegen.For scanning the contours of the double cam 1 two rollers 5, 6 are provided, which on the respective Single cam discs 2, 3 are in contact.

Über einen Schwinghebel 7 sowie eine Stange 8 sind die Rollen 5, 6 mit der Werkstücktransporteinrichtung der Presse verbunden.About a rocker arm 7 and a rod 8 are the Rollers 5, 6 with the workpiece transport device Press connected.

Die Verbindung zwischen dem Schwinghebel 7 und der Stange 8 erfolgt über ein Drehgelenk 9.The connection between the rocker arm 7 and the Rod 8 takes place via a swivel joint 9.

Der Schwinghebel 7 selbst ist an einer Stelle 10 drehbar gelagert. Die Drehachse des Schwinghebels 7 verläuft hierbei parallel zur Axialrichtung der Welle 4.The rocker arm 7 itself is rotatable at one point 10 stored. The axis of rotation of the rocker arm 7 extends parallel to the axial direction of the shaft 4.

Die Rollen 5, 6 sind jeweils auf Bolzen 11, 12 drehbar gelagert. Der Bolzen der Rolle 5 ist ein Exzenterbolzen 11 und über einen Anlenker 13 mit einer Vorspanneinrichtung verbunden, welche in dem vorliegenden Ausführungsbeispiel als Hydraulikzylinder 14 ausgeführt ist.The rollers 5, 6 are each rotatable on bolts 11, 12 stored. The pin of the roller 5 is an eccentric pin 11 and via a link 13 with a pretensioning device connected, which in the present embodiment executed as a hydraulic cylinder 14 is.

Die Vorspanneinrichtung 14, d.h. der Hydraulikzylinder, ist hierbei mittels eines Lagerbockes 15 mit dem Schwinghebel 7 fest verbunden, wobei die Unterseite des Hydraulikzylinders 14, d.h. die der Kolbenstange 16 des Hydraulikzylinders 14 abgewandte Seite, drehbar auf dem Lagerbock 15 gelagert ist.The biasing device 14, i.e. the hydraulic cylinder, is here by means of a bearing block 15 with the Rocker arm 7 firmly connected, the bottom of the hydraulic cylinder 14, i.e. that of the piston rod 16 of the hydraulic cylinder 14 facing away, rotatable is mounted on the bearing block 15.

Das dem Hydraulikzylinder 14 abgewandte Ende der Kolbenstange 16 ist ebenfalls mit einem Drehgelenk versehen, so daß auch die Verbindung zwischen dem Anlenker 13 und der Kolbenstange 16 des Hydraulikzylinders 14 mittels eines Lagers, das eine Schwenkbewegung des Anlenkers 13 ermöglicht, erfolgt.The end of the piston rod facing away from the hydraulic cylinder 14 16 is also provided with a swivel joint, so that the connection between the link 13 and the piston rod 16 of the hydraulic cylinder 14 by means of a bearing that pivots the link 13 enables, takes place.

Aus Übersichtlichkeitsgründen ist die beschriebene Anordnung mit dem Hydraulikzylinder 14 nur für die Rolle 5 dargestellt. Selbstverständlich kann diese Anordnung, wie beschrieben, auch für die Rolle 6 vorgesehen sein.The arrangement described is for reasons of clarity with the hydraulic cylinder 14 only for the role 5 shown. Of course, this arrangement, as described, also provided for the role 6 be.

Wird nun die Kolbenstange 16 des Hydraulikzylinders 14 verschoben, so wird aufgrund der exzentrischen Ausführung des Bolzens 11 die Rolle 5 näher an die Einzelkurvenscheibe 3 der Doppelkurvenscheibe 1 herangeführt, so daß das Spiel zwischen der Rolle 5 und der Einzelkurvenscheibe 3 und zwischen der Rolle 6 und der Einzelkurvenscheibe 2 aufgehoben wird. Hierdurch wird eine allzeitige Anlage der Rollen 5, 6 an den Einzelkurvenscheiben 2, 3 erreicht.Now the piston rod 16 of the hydraulic cylinder 14 postponed, because of the eccentric design of the pin 11, the roller 5 closer to the single cam 3 of the double cam disc 1, so that the game between the role 5 and the Single cam 3 and between the roller 6 and the Single cam 2 is canceled. This will an all-time installation of the rollers 5, 6 on the individual cams 2, 3 reached.

Hierdurch wird eine Vorspannung der Rollen 5, 6 gegen die Doppelkurvenscheibe 1 erreicht, wodurch das gesamte Transfersystem für den Transport der Werkstücke zwischen den einzelnen Stationen einer Presse sicher und mit einer verhältnismäßig hohen Drehzahl der Doppelkurvenscheibe 1 betrieben werden kann, so daß die Wirtschaftlichkeit einer mit der beschriebenen Vorrichtung ausgerüsteten Presse gesteigert werden kann.As a result, a preload of the rollers 5, 6 against reached the double cam 1, whereby the entire Transfer system for the transport of workpieces between the individual stations of a press and with a relatively high speed of the double cam 1 can be operated so that the Economy of a device described equipped press can be increased.

Fig. 2 zeigt eine Seitenansicht der Anordnung nach der Fig. 1.Fig. 2 shows a side view of the arrangement according to the Fig. 1.

In dieser Ansicht ist der Versatz der Rollen 5, 6 sehr gut zu erkennen. Des weiteren kann der Fig. 2 entnommen werden, daß der Schwinghebel 7 hohl ausgeführt ist, so daß in den Hohlräumen des Schwinghebels 7 die Lagerstellen für die Rollen 5, 6 sowie für den Drehpunkt 10 des Schwinghebels 7 vorgesehen werden können. In this view, the offset of the rollers 5, 6 is very clearly visible. 2 can also be seen be that the rocker arm 7 is hollow is, so that in the cavities of the rocker arm 7 Bearings for rollers 5, 6 and for the pivot point 10 of the rocker arm 7 can be provided.

Anstatt als Hydraulikzylinder kann die Vorspanneinrichtung 14 auch vorteilhaft als Pneumatikzylinder oder als mechanische Einrichtung ausgeführt sein. Wichtig ist nur, daß ein ausreichend großer Druck mit der Vorspanneinrichtung 14 erzielt wird, welcher die Rollen 5, 6 gegen die Umfangsflächen der Doppelkurvenscheibe 1 unter Vorspannung drückt und somit das Spiel zwischen der Doppelkurvenscheibe 1 und den Rollen 5, 6 ausgleicht.Instead of as a hydraulic cylinder, the pretensioning device 14 also advantageous as a pneumatic cylinder or be designed as a mechanical device. It is only important that a sufficiently large pressure with the biasing device 14 is achieved, which the Rollers 5, 6 against the peripheral surfaces of the double cam 1 presses under tension and thus the game between the double cam 1 and the rollers 5, 6 compensates.

Claims (4)

  1. Device for transferring workpieces into the processing stations of a press, having a shaft (4), which is rotationally driven by a motor and on which cam plates are mounted in position, of which at least two cam plates (2, 3) are combined to form a double cam plate (1) for scanning the cam shapes for a positively driven movement of a rocker lever (7), and having connecting straps (8) for converting the movement of the rocker lever (7) into drive movement of the transfer device, two rollers (5, 6) being mounted on the rocker lever (7) and running under preloading on the double cam plate (1), one of the two rollers (5, 6) being mounted on the rocker lever (7) via an eccentric (11), and the eccentric (11) interacting with a preloading device (14), characterized in that the roller (5) is rotatably mounted on an eccentric pin (11), and the eccentric pin (11) is rigidly connected to one end of a link (13), which at the other end is operatively connected to the preloading device (14), the preloading device (14) being a pressure unit which can be activated.
  2. Device according to Claim 1, characterized in that the preloading device (14) is a hydraulic system.
  3. Device according to Claim 1, characterized in that the preloading device (14) is a pneumatic system.
  4. Device according to Claim 1, characterized in that the preloading device (14) is a mechanical system.
EP95111056A 1994-07-20 1995-07-14 Press with transfer bars Expired - Lifetime EP0693332B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4425560A DE4425560A1 (en) 1994-07-20 1994-07-20 Press with gripper rails
DE4425560 1994-07-20

Publications (2)

Publication Number Publication Date
EP0693332A1 EP0693332A1 (en) 1996-01-24
EP0693332B1 true EP0693332B1 (en) 1999-10-27

Family

ID=6523596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111056A Expired - Lifetime EP0693332B1 (en) 1994-07-20 1995-07-14 Press with transfer bars

Country Status (5)

Country Link
US (1) US5718152A (en)
EP (1) EP0693332B1 (en)
CZ (1) CZ284421B6 (en)
DE (2) DE4425560A1 (en)
ES (1) ES2140586T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50001408D1 (en) * 1999-07-29 2003-04-10 Hatebur Umformmaschinen Ag Rei DEVICE FOR GENERATING A LIFTING AND LOWERING MOVEMENT
GB2371283B (en) * 2000-12-22 2005-03-02 Vitec Group Plc Devices for providing torque resistance
US6736096B2 (en) * 2002-02-21 2004-05-18 Delphi Technologies, Inc. Method and apparatus for setting valve lift within a cylinder

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266081A (en) * 1940-03-23 1941-12-16 Jay T Rogers Melting pot discharge valve operating means
US2558679A (en) * 1947-05-07 1951-06-26 Nouvelle Soc De Construction C Cam and follower mechanism
FR1101917A (en) * 1953-06-09 1955-10-12 Cam mechanism
US3116923A (en) * 1960-09-09 1964-01-07 Maschf Augsburg Nuernberg Ag Sheet advancing drive for printing presses
US3596498A (en) * 1968-12-27 1971-08-03 Textron Inc Press
US3585837A (en) * 1969-01-27 1971-06-22 Otto Bihler Enforced cam guidance for tool carriers
DE2112590A1 (en) 1971-03-16 1972-10-12 Weingarten Ag Maschf Press line
JPS6341304A (en) * 1986-08-08 1988-02-22 Sumitomo Heavy Ind Ltd Mechanical transfer feeder
JPH01237030A (en) * 1988-03-18 1989-09-21 Ishikawajima Harima Heavy Ind Co Ltd Device for driving feed of transfer press
DE3832499A1 (en) 1988-09-24 1990-03-29 Schuler Gmbh L PRESS WITH GRIPPER RAILS
DE3913663A1 (en) * 1989-04-26 1990-10-31 Schuler Gmbh L CONVERSION DEVICE IN A TRANSFER PRESS OR THE LIKE. FORMING MACHINE
DE3922532C1 (en) * 1989-07-08 1990-10-04 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De

Also Published As

Publication number Publication date
CZ185995A3 (en) 1996-02-14
ES2140586T3 (en) 2000-03-01
DE59507126D1 (en) 1999-12-02
EP0693332A1 (en) 1996-01-24
DE4425560A1 (en) 1996-01-25
US5718152A (en) 1998-02-17
CZ284421B6 (en) 1998-11-11

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