EP0188648A1 - Presse de transfert - Google Patents

Presse de transfert Download PDF

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Publication number
EP0188648A1
EP0188648A1 EP85100729A EP85100729A EP0188648A1 EP 0188648 A1 EP0188648 A1 EP 0188648A1 EP 85100729 A EP85100729 A EP 85100729A EP 85100729 A EP85100729 A EP 85100729A EP 0188648 A1 EP0188648 A1 EP 0188648A1
Authority
EP
European Patent Office
Prior art keywords
lead screw
shafts
bearing bush
gripper
support element
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
EP85100729A
Other languages
German (de)
English (en)
Other versions
EP0188648B1 (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 EP19850100729 priority Critical patent/EP0188648B1/fr
Priority to DE8585100729T priority patent/DE3583332D1/de
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, with guide means and drive means for moving the gripper rails at least in and against the transfer direction and in the closing-opening directions in time with the ram movement and with an adjusting device for changing the initial width of the gripper rails .
  • gripper-fitted 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 to be driven in at least two axes - moving the workpieces and closing-opening for gripping and releasing the workpieces - in synchronous movement with one another.
  • 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 DF-OS 31 03 046 has an adjustment tap in the linkage the gripper rails score a drive system in the area of the stand consisting of an adjustment motor with a coupling, connecting shafts and bevel gear drives.
  • the gripper rails articulated in the articulation points for the closing-open movement are mounted so as to be longitudinally displaceable on slide-like movable support elements; 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 protrusion of the press structure in the case of larger changes in width, for example greater than 400 nm, since the spindle must be supported and thus must be guided over the length of the adjustment dimension.
  • 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 further training for the individual setting of the starting position of each gripper rail and which uses the space between the gripper rails.
  • each gripper rail in each articulation area for moving in the closing-open directions via a support element, a bearing bush rotatably mounted in the support element, at least one cam part which is effective when the bearing bush rotates, and one cam follower part in operative connection with a push part stands that each thrust part is movable in the closing-opening directions and articulated on the press-side drive means and that the bearing bush can be rotated by a servomotor via rotary transmission means.
  • 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 allows the output width of the gripper rails to be adjusted by means of a cam part and one or more cam follower parts between the bearing bush and the lead screw or also between the bearing bush and the support element.
  • the multi-part nature of the La The positioning 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, which permits a synchronous change in the initial width of the gripper rails and a separate change in the initial position thereof using conventional components.
  • 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 makes further development within the meaning of claims 4 and 5 possible.
  • the features of claim 4 characterize the synchronous adjustment drive of both gripper rails in all articulation areas.
  • the features according to claim 5 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 bracket 2, via a respective support element 3, in this by means of guide means 4 in the direction of transfer of the workpieces, a direction perpendicular to the plane of the drawing, adjustable by a press-side transfer drive (not shown) and movable by means of the supporting elements 3 and roller guides, rollers 6 on the supporting elements 3 and running rails 7 on the console 2, in the closing-open directions indicated by an arrow 8 .
  • 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-open directions 8 slidably mounted, roller-guided slide 13.
  • a coupling rod 19 is arranged for the synchronous opposite movement of the gripper rails 1 in the closing-open directions 8.
  • a lead screw 14 is rotatably mounted, which extends into the area of the associated support element 3 and in a central bore of the support element 3 via a bearing bush 16 or directly in the support element 3 is stored.
  • 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 the drive rod 9, angle lever 11 , Tab 12 and slide 13 in the closing-open directions 8.
  • 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 bushing 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.
  • Other configurations of 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 cannot be displaced axially and is provided with a curve part, for example a spiral guide groove, which is provided with a curve follower part, for example a pin in the support element 3 cooperates.
  • the rotation of the bearing bush 16 or of a rotatable lead screw 14 according to the second embodiment mentioned takes place via a gearwheel 21 formed or attached to the end regions thereof, a second, in the support element 3 rotatably mounted gear 22 which engages in the gear 21, a longitudinally profiled shaft 23 which is rotatably mounted on the bracket 2 and which is guided through the same profiling of the inner bore 20 in the gear 22, the longitudinally profiled shaft 23 extending over the total 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
EP19850100729 1985-01-25 1985-01-25 Presse de transfert Expired - Lifetime EP0188648B1 (fr)

Priority Applications (2)

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

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 true EP0188648A1 (fr) 1986-07-30
EP0188648B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640531A1 (fr) * 1988-12-15 1990-06-22 Mueller Weingarten Maschf Dispositif d'entrainement de barres preneuses pour des presses a etages
FR2658101A1 (fr) * 1990-02-21 1991-08-16 Erfurt Umformtechnik Gmbh Dispositif d'actionnement pour un reglage d'espacement des rails de prise d'une presse-transfert.
EP0620072A1 (fr) * 1993-03-15 1994-10-19 Mabi Ag Méthode et dispositif pour l'usinage de tôles minces
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2359912A1 (de) * 1973-11-29 1975-06-12 Hitachi Shipbuilding Eng Co Vorschubstangenantriebsvorrichtung fuer eine transfer-presse
DE2525616A1 (de) * 1975-06-02 1976-12-16 Komatsu Mfg Co Ltd Vorrichtung zum justieren des seitlichen abstandes zwischen einem foerderschienenpaar einer aufgabevorrichtung
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2359912A1 (de) * 1973-11-29 1975-06-12 Hitachi Shipbuilding Eng Co Vorschubstangenantriebsvorrichtung fuer eine transfer-presse
DE2525616A1 (de) * 1975-06-02 1976-12-16 Komatsu Mfg Co Ltd Vorrichtung zum justieren des seitlichen abstandes zwischen einem foerderschienenpaar einer aufgabevorrichtung
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640531A1 (fr) * 1988-12-15 1990-06-22 Mueller Weingarten Maschf Dispositif d'entrainement de barres preneuses pour des presses a etages
FR2658101A1 (fr) * 1990-02-21 1991-08-16 Erfurt Umformtechnik Gmbh Dispositif d'actionnement pour un reglage d'espacement des rails de prise d'une presse-transfert.
EP0620072A1 (fr) * 1993-03-15 1994-10-19 Mabi Ag Méthode et dispositif pour l'usinage de tôles minces
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

Also Published As

Publication number Publication date
EP0188648B1 (fr) 1991-06-26
DE3583332D1 (de) 1991-08-01

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