EP0693332B1 - Presse à barres de transfert - Google Patents

Presse à barres de transfert 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)
English (en)
Other versions
EP0693332A1 (fr
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/fr
Application granted granted Critical
Publication of EP0693332B1 publication Critical patent/EP0693332B1/fr
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.

Landscapes

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

Claims (4)

  1. Dispositif pour le transfert de pièces à usiner dans les stations d'usinage d'une presse comportant un arbre (4) entraíné par un moteur, des cames étant montées sur l'arbre, dont au moins deux cames (2, 3) sont combinées pour former un disque double à cames (1) pour prélever le contour de came pour un guidage forcé d'un levier oscillant (7), ainsi que des éclisses de raccordement (8) pour le retour du mouvement du levier oscillant (7) dans le mouvement d'entraínement du dispositif pour le transfert, deux poulies (5, 6) étant agencées sur le levier oscillant (7) et tournant avec précontrainte sur le disque double à cames (1), l'une des deux poulies (5, 6) étant montée par l'intermédiaire d'un excentrique (11) sur le levier oscillant (7), l'excentrique (11) coopérant avec un dispositif de contrainte(14), caractérisé en ce que la poulie (5) est montée de façon à pouvoir tourner autour d'un boulon d'excentrique (11) et le boulon d'excentrique (11) étant relié de façon rigide à une extrémité d'un organe articulé (13) qui à son autre extrémité est relié de façon active au dispositif de précontrainte (14), le dispositif de précontrainte (14) étant une unité pouvant être activée pour exercer une pression d'appui.
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de précontrainte (14) est un système hydraulique.
  3. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de précontrainte (14) est un système pneumatique.
  4. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de précontrainte (14) est un système mécanique.
EP95111056A 1994-07-20 1995-07-14 Presse à barres de transfert Expired - Lifetime EP0693332B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4425560A DE4425560A1 (de) 1994-07-20 1994-07-20 Presse mit Greiferschienen
DE4425560 1994-07-20

Publications (2)

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

Family

ID=6523596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111056A Expired - Lifetime EP0693332B1 (fr) 1994-07-20 1995-07-14 Presse à barres de transfert

Country Status (5)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50001408D1 (de) * 1999-07-29 2003-04-10 Hatebur Umformmaschinen Ag Rei Vorrichtung zur erzeugung einer hebe- und senkbewegung
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 (fr) * 1953-06-09 1955-10-12 Mécanisme à cames
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 (de) 1971-03-16 1972-10-12 Weingarten Ag Maschf Pressenstrasse
JPS6341304A (ja) * 1986-08-08 1988-02-22 Sumitomo Heavy Ind Ltd メカニカルトランスフアフイ−ダ
JPH01237030A (ja) * 1988-03-18 1989-09-21 Ishikawajima Harima Heavy Ind Co Ltd トランスファープレスの送り駆動装置
DE3832499A1 (de) 1988-09-24 1990-03-29 Schuler Gmbh L Presse mit greiferschienen
DE3913663A1 (de) * 1989-04-26 1990-10-31 Schuler Gmbh L Umsetzeinrichtung in einer transferpresse o.dgl. umformmaschine
DE3922532C1 (fr) * 1989-07-08 1990-10-04 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De

Also Published As

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

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