EP0188648B1 - Presse de transfert - Google Patents

Presse de transfert Download PDF

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Publication number
EP0188648B1
EP0188648B1 EP19850100729 EP85100729A EP0188648B1 EP 0188648 B1 EP0188648 B1 EP 0188648B1 EP 19850100729 EP19850100729 EP 19850100729 EP 85100729 A EP85100729 A EP 85100729A EP 0188648 B1 EP0188648 B1 EP 0188648B1
Authority
EP
European Patent Office
Prior art keywords
gripper
gear
bearing bush
gripper rails
spindle
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
EP19850100729
Other languages
German (de)
English (en)
Other versions
EP0188648A1 (fr
Inventor
Wolfgang Hübner
Gerald Mikusch
Karl Thudium
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
Priority to DE8585100729T priority Critical patent/DE3583332D1/de
Priority to EP19850100729 priority patent/EP0188648B1/fr
Publication of EP0188648A1 publication Critical patent/EP0188648A1/fr
Application granted granted Critical
Publication of EP0188648B1 publication Critical patent/EP0188648B1/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

Definitions

  • the invention relates to a transfer press with workpieces converting gripper rails in the processing stages of the type specified in the preamble of claim 1.
  • a generic transfer press is known from DE-A-23 59 912.
  • gripper-equipped rails that convey the workpieces from the input station to the first processing stage, between the processing stages and from the last processing stage to an output area.
  • the gripper rails are driven in at least two axes - moving the workpieces and opening them to grasp and release the workpieces in a synchronous movement.
  • the tools required for punching, shaping and trimming are generally installed aligned with the longitudinal center of the transfer press. Often, the center of gravity of the workpieces is not centered on the tool and therefore not on the longitudinal center of the transfer press, and because of the shape of the workpieces the gripping tongs on the workpieces are often not symmetrical to the longitudinal center of the transfer press.
  • the gripper rails are then loaded unevenly. One gripper rail is to be equipped with longer gripping tools, the other gripper rail is to be equipped with shorter gripping tools.
  • the press described in DE-A-31 03 046 has a drive system for adjusting pick-up in the articulation points of the gripper rails in the area of the stands, comprising an adjusting motor with a coupling, connecting shafts and Bevel gear.
  • the gripper rails articulated in the articulation points for the closing-open movement are mounted in a longitudinally displaceable manner on support elements which can be moved in the manner of a slide; the support elements can be driven transversely with the plunger movement via a rack and pinion drive.
  • a spindle is introduced, the position of the gripper rails relative to one another in the sense of a larger or smaller starting width being adjustable by the adjusting motor.
  • Changing the initial width of the gripper rails is only possible by simultaneously adjusting both gripper rails to the new workpiece dimensions.
  • the one-sided attack of the adjusting means for changing the initial width of the gripper rails requires larger protrusions of the press structure in the case of larger changes in width, for example greater than 400 mm, since the spindle must be supported and thus must be guided over the length of the adjustment dimension.
  • a transfer press is known with gripper rails for transferring workpieces from processing stage to processing stage.
  • the gripper rails are mounted in brackets that have support elements and guide elements for the transfer movements.
  • the movements of the gripper rails in and against the transfer direction and in the closing-open directions take place in time with the ram movement.
  • an adjusting device is provided with a nut-spindle connection that can be acted upon by a motor via a gear mechanism.
  • the object of the invention is to provide a device for changing the initial width of the gripper rails, which is independent of the drive for the closing-open movement, which allows the individual setting of the starting position of each gripper rail and which uses the space between the gripper rails.
  • a particular advantage of the invention can be seen in the intermediate member designed as a bearing bush between the support element and the lead screw, which adjusts the initial width of the gripper rails by a cam part and one or more cam followers between the bearing bush and the lead screw or also between the bearing bush and the support element.
  • the multi-part mounting of the lead screw in the support element by means of the bearing bush ensures high adjustment accuracy with a long service life.
  • Claim 2 characterizes a first preferred embodiment according to the invention.
  • Claim 3 characterizes a further embodiment according to the invention with a curve follower part introduced between the support element and the curve part designed as a lead screw.
  • this embodiment of the invention also enables further development within the meaning of claim 4.
  • the features according to claim 4 characterize the possibility of a separate change in the starting position of the gripper rails by different adjustment dimensions.
  • each gripper rail 1 is supported in each of its articulation areas, area of each console 2, via a respective support element 3, in this by means of guide means 4 in the direction of movement of the workpieces, a direction perpendicular to the plane of the drawing, adjustable by a press-side transfer drive (not shown) and by means of the support element 3 and roller guides, rollers 6, on the support elements 3 and rails 7 on the console 2, in the indicated by an arrow 8 Closing-opening directions movable.
  • the movement drive of the gripper rails 1 in the closing-opening directions 8 takes place from a press-driven, for example up and down movable drive rod 9 via rotatable in the bracket 2 angular lever 11, one tab 12 and one in each rail 7 in the Closing-opening directions 8 slidably mounted, roller-guided carriage 13.
  • a coupling rod 19 is arranged for the synchronous opposite movement of the gripper rails 1 in the closing-opening directions 8.
  • a lead screw 14 is rotatably mounted, which is guided into the area of the associated support element 3 and is mounted in a central bore of the support element 3 via a bearing bush 16 or directly in the support element 3.
  • the lead screw 14 can be provided with a thread-like guide groove, in which, as shown, in the bearing bush 16 or in the support element 3, rotatably mounted balls or rollers 17 are guided to take the support element 3 with the movement of the drive means from drive rod 9, angle lever 11 , Tab 12 and slide 13 in the closing-opening directions 8.
  • the relative position of each support element 3 to the lead screw 14 for changing the starting position of the gripper rails 1 can, as shown, by rotating the bearing bush 16 in the support element 3 or in the event of failure the bearing bush 16 in a second embodiment by rotating the lead screw 14 with a corresponding rotary bearing of this in the carriage 13.
  • Lead screw 14 and balls or rollers 17 are mentioned as examples.
  • curve part 14 and curve follower part 17 are conceivable, in which, for example, the bearing bush 16 is rotatable on the lead screw 14, but is not axially displaceable and is provided with a curve part, for example a spiral guide groove, which has a curve follower part, e.g. . a pin in the support element 3 cooperates.
  • the rotation of the bearing bush 16 or a rotatable lead screw 14 according to the second embodiment mentioned takes place via a gear 21 formed or attached to the end regions thereof, and a second gear 22 which is rotatably mounted in the support element 3 and which engages in the gear 21 the console 2 rotatably supported longitudinally profiled shaft 23, which is guided through an identical profile of the inner bore 20 in the gear 22, the longitudinally profiled shaft 23 extending over the entire adjustment range of the support element 3 extends.
  • the longitudinally profiled shaft 23 is operatively connected via shafts or cardan shafts 24 and angular gear 26 to a servomotor 27, FIG. 1, common to all longitudinally profiled shafts 23. Additional angular gears 28 are assigned to the individual articulation areas of the gripper rail closing-opening movements.
  • Fig. 2 sees, in contrast to Fig. 1, a separate drive each gripper rail 1, 1 'in front of each with an actuator 27, 27' and angular gear 28, 28 'and shafts or cardan shafts 24, 24' in double number, whereby each gripper rail 1, 1 'with appropriate control of the respective servo motor 27, 27' individually (separately) for a change in the basic width taking into account, for example the center of gravity of the workpieces is articulated.

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

Claims (4)

  1. Presse transfert comportant : des barres de transfert (1) pour transférer des pièces à traiter dans les postes de formage, des moyens de guidage sur les consoles pour les barres de transfert (1), composés d'éléments de support (3) et d'éléments de guidage (4, 6, 7), des moyens d'entraînement (9) pour mouvoir les barres de transfert (1) au moins en va-et-vient dans la direction du transfert et dans les sens de fermeture et d'ouverture (8) à la cadence du coulisseau, et un dispositif de réglage (14, 16, 17, 21, 22, 23, 24, 26, 27, 28) pour faire varier la largeur de départ entre les barres de transfert (1) par une variation longitudinale de la transmission du mouvement pour la fermeture et l'ouverture au moyen d'un mécanisme à vis et écrou actionné par un moteur (27, 27') grâce à des moyens de transmission, caractérisée en ce qu'une douille (16) est montée de manière rotative dans chacun des éléments de support (3), chacune de ces douilles (16) étant agencée pour former l'écrou d'un mécanisme à vis et écrou, en ce que chacune des vis (14) coopérant avec une douille (16) est raccordée à un élément coulissant (13) de manière à ne pas tourner, ledit élément coulissant (13) étant mobile sous l'effet des moyens d'entraînement (9) de la presse dans les sens de fermeture et d'ouverture (8), et en ce que chacune des douilles (16) est couplée, grâce à des moyens de transmission de rotation (21, 22, 23, 24, 26, 28), à au moins un moteur (27) commun à toutes les douilles (16) pour un réglage commun des barres de transfert (1), ou est couplée en permanence à au moins un moteur (27, 27') par barre de transfert (1) pour un réglage des barres (1) susceptible d'être effectué séparément.
  2. Presse transfert selon la revendication 1, caractérisée en ce que chacune des vis (14) est pourvue d'une rainure semblable à un filetage, en ce que des billes (17) sont engagées positivement entre la douille (16) et la vis (14), en ce qu'une extrémité de chaque douille est agencée en roue dentée (21) qui est engrenée sur un pignon (22) monté de manière rotative sur l'élément de support (3) correspondant, et en ce que chaque pignon (22) est monté, grâce à un alésage interne (20), de manière coulissante axialement mais liée en rotation, sur un arbre (23) profilé longitudinalement et entrainé par un servomoteur.
  3. Presse transfert selon la revendication 1, caractérisée en ce que chacune des vis (14) est pourvue d'une rainure semblable à un filetage, en ce que des billes (1) sont engagées positivement entre l'élément de support (3) et la vis, en ce qu'une extrémité de chaque vis est agencée en roue dentée (21) qui est engrenée sur un pignon (22) monté de manière rotative sur l'élément de support (3) correspondant, et en ce que chaque pignon (22) est monté, grâce à un alésage interne (20), de manière coulissante axialement mais liée en rotation, sur un arbre (23) profilé longitudinalement et entrainé par un moteur.
  4. Presse transfert selon l'une des revendications 1 à 3, caractérisée par un premier système d'entraînement qui comporte un servomoteur (27), des arbres, des arbres articulés, des engrenages ou des moyens similaires de transmission de rotation (24, 26, 28) et qui relie mécaniquement tous les arbres profilés longitudinalement (23) correspondant à une première barre de transfert (1), et par un second système d'entraînement, sensiblement de même construction (24', 26', 27', 28'), qui relie mécaniquement tous les arbres profilés longitudinalement (23') correspondant à la seconde barre de transfert (1').
EP19850100729 1985-01-25 1985-01-25 Presse de transfert Expired - Lifetime EP0188648B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8585100729T DE3583332D1 (de) 1985-01-25 1985-01-25 Transferpresse.
EP19850100729 EP0188648B1 (fr) 1985-01-25 1985-01-25 Presse de transfert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19850100729 EP0188648B1 (fr) 1985-01-25 1985-01-25 Presse de transfert

Publications (2)

Publication Number Publication Date
EP0188648A1 EP0188648A1 (fr) 1986-07-30
EP0188648B1 true EP0188648B1 (fr) 1991-06-26

Family

ID=8193253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850100729 Expired - Lifetime EP0188648B1 (fr) 1985-01-25 1985-01-25 Presse de transfert

Country Status (2)

Country Link
EP (1) EP0188648B1 (fr)
DE (1) DE3583332D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842182C1 (fr) * 1988-12-15 1989-09-28 Maschinenfabrik Mueller-Weingarten Ag, 7987 Weingarten, De
DE4101513A1 (de) * 1990-02-21 1991-08-14 Erfurt Umformtechnik Gmbh Verstelleinrichtung zur weiteneinstellung der greiferschienen einer transferpresse
ATE188153T1 (de) * 1993-03-15 2000-01-15 Mabi Ag Vorrichtung und verfahren zur dünnblechbearbeitung
CN105903839A (zh) * 2016-04-28 2016-08-31 安徽兴远家电成套设备有限公司 一种新型冷柜围板钣金板材输送机械手

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435028A (en) * 1973-11-29 1976-05-12 Hitachi Shipbuilding Eng Co Multi-station transfer presses
DE2525616C3 (de) * 1975-06-02 1980-11-27 K.K. Komatsu Seisakusho, Tokio Verstellvorrichtung einer Werkstücktransporteinrichtung von Stufenpressen
JPS566743A (en) * 1979-06-29 1981-01-23 Aida Eng Ltd Stepless adjusting device of inside width of feed bar in transfer
DE3103046A1 (de) * 1981-01-30 1982-08-12 Maschinenfabrik Weingarten Ag, 7987 Weingarten Vorrichtung zur weiteneinstellung der greiferschienen in pressen, insbesondere stufenpressen

Also Published As

Publication number Publication date
EP0188648A1 (fr) 1986-07-30
DE3583332D1 (de) 1991-08-01

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