EP0510505B1 - Dispositif d'étirage dans une press - Google Patents

Dispositif d'étirage dans une press Download PDF

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Publication number
EP0510505B1
EP0510505B1 EP92106506A EP92106506A EP0510505B1 EP 0510505 B1 EP0510505 B1 EP 0510505B1 EP 92106506 A EP92106506 A EP 92106506A EP 92106506 A EP92106506 A EP 92106506A EP 0510505 B1 EP0510505 B1 EP 0510505B1
Authority
EP
European Patent Office
Prior art keywords
cylinders
setbolts
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
Application number
EP92106506A
Other languages
German (de)
English (en)
Other versions
EP0510505A1 (fr
Inventor
Klaus Siegert
Eckart Dannenmann
Rolf Kellenbenz
Alfred Bareis
Horst Pfisterer
Hartmut Hoffmann
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 EP0510505A1 publication Critical patent/EP0510505A1/fr
Application granted granted Critical
Publication of EP0510505B1 publication Critical patent/EP0510505B1/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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/04—Blank holders; Mounting means therefor
    • B21D24/08—Pneumatically or hydraulically loaded blank holders
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/04—Blank holders; Mounting means therefor
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically

Definitions

  • the invention relates to a drawing device in a press according to the preamble of claim 1.
  • the sheet metal part edges are to be held.
  • the sheet metal holding is carried out by countering a sheet metal holder which is force and displacement controlled by the drawing device, with the sheet metal part edge being interposed on a contact surface in the upper part of the tool.
  • the sheet metal parts can be ejected from the lower part of the tool using the sheet metal holder and the corresponding actuation of the drawing cylinder or a separate ejector cylinder.
  • there are sheet metal parts of different sizes or at the same time e.g.
  • the forming and ejection of the sheet metal parts can be carried out with a movable drawing die in the lower part of the tool, so that the pressure bolts acting on the sheet metal holder or the drawing die must also be selected for this purpose.
  • DE 34 05 316 C2 discloses a pulling device in a stepped press.
  • a sliding table can be moved into the press, with which a tool or a tool set can be exchanged.
  • a pulling device with, for example, four pressure cylinders, the piston rods of which act on a pressure cheek.
  • Pressure bolts are supported on the pressure cheek and can be raised and lowered by the drawing cylinders and pressurized for a sheet metal holder or ejector force.
  • the die cushion as a whole is slidably arranged between the individual work stages of the step press.
  • Claim 5 thus represents an embodiment which enables a traversing movement of the drawing cylinders in two horizontal directions of movement (axes) in order to expand the possibilities of using existing drawing cylinders.
  • the link to the distance between the cylinders in a block is omitted.
  • a pulling device 3 which interacts with pressure bolts 5, 6 for the pressure and movement control of a sheet metal holder 21.
  • the pressure bolts 5, 6, of which the pressure bolts positioned at 6 are raised by the pulling device, are guided in a perforated plate 4 and held in a crossbar 7 supported by web bolts or plates 8.
  • the drawing cylinders 9, 10 are located below the pressure bolts 5, 6 and are individually or, as shown, block-mounted displaceably in rails 13.
  • the drawing cylinders can be controlled via valves 15 from a pressure supply, and their push rods 11, 12 can be placed against the pressure bolts 5, 6 from below.
  • the position of the piston rods 12 which raises the pressure bolts 6 is shown for two of the drawing cylinders.
  • the displacement movement of the drawing cylinders 9, 10 in the rails takes place by means of hydraulic servomotors 14, which are commercially available, and push rods 16, which are guided out of them and which are firmly connected to the drawing cylinders or drawing cylinder blocks 20 (FIGS. 1, 2) or a worm spindle drive ( 3, 4) which has a motor (not shown) which acts via a worm 19 and a worm wheel 18 on a threaded spindle 17 which, in the sense of a right-left rotation of the worm 18, a displacement movement of an individual drawing cylinder or a drawing cylinder block in one horizontal direction.
  • the sheet metal holder 21 indicated in the figures is matched in shape and size to the shape and size of the sheet metal part to be formed. In individual cases, it may be sufficient to control the sheet metal holder discreetly when forming a sheet metal part or the sheet metal holder when forming two sheet metal parts that are, for example, mirror-like or also the same sheet metal parts in only four points. In any case, because of the shape and size, it must be possible for the sheet metal holder (s) to be loaded in different areas in order to be able to deal with the drawing conditions. This may require the drawing cylinders 9, 10 to be mounted in slides, the slides, as shown as block 20 in FIG.
  • a (fixed) distance between the cylinders 9, 10 is provided in the block 20, which corresponds to the Distance from two adjacent pressure bolts 5, 6 corresponds. Thanks to the additional horizontal movement axis that has been set up, n times a fixed distance is possible when setting up a new workpiece - tool change.

Claims (5)

  1. Dispositif d'emboutissage (3) dans une presse, comportant des vérins d'emboutissage (9, 10) pour tenir des pièces de tôle pendant le formage et, le cas échéant, pour éjecter les pièces de tôle de l'élément d'outil inférieur après le formage, et dans lequel les pistons des vérins d'emboutissage (9, 10) agissent par des poussoirs (5, 6) sur le serre-flan dans l'élément d'outil inférieur, caractérisé en ce que les vérins d'emboutissage (9, 10) sont disposés individuellement ou en groupes dans différents chariots (20) et sont guidés par ceux-ci sur des rails horizontaux (13) fixes sur la presse et sont déplaçables par des moyens de déplacement et de transmission (14, 16, 17, 18, 19) dans au moins une direction de déplacement au-dessous des poussoirs (5, 6) individuellement, ou en groupe en cas de montage mobile commun, les poussoirs (5, 6) étant actionnés directement par les vérins d'emboutissage (9, 10).
  2. Dispositif selon la revendication 1, caractérisé en ce que les moyens de déplacement sont des actionneurs (14) commandés hydrauliquement, dont les tiges de poussée (16) sont reliées aux vérins d' emboutissage (9, 10) ou chacune à au moins l'un desdits vérins.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'au moins deux vérins d'emboutissage (9, 10) sont disposés dans un bloc (20) qui est coulissant sous l'effet d'un actionneur (14).
  4. Dispositif selon la revendication 3, caractérisé en ce que l'écartement mutuel des vérins d' emboutissage (9, 10) dans un bloc (20) correspond à l'écartement entre deux poussoirs adjacents (5, 6).
  5. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que les vérins d' emboutissage (9, 10) sont montés dans des chariots (20) également de manière mobile, perpendiculairement à la direction de déplacement du chariot, pour être déplaçables horizontalement sur des rails (13) au moyen d'actionneurs (14).
EP92106506A 1991-04-20 1992-04-15 Dispositif d'étirage dans une press Expired - Lifetime EP0510505B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4112945A DE4112945A1 (de) 1991-04-20 1991-04-20 Zieheinrichtung in einer presse
DE4112945 1991-04-20

Publications (2)

Publication Number Publication Date
EP0510505A1 EP0510505A1 (fr) 1992-10-28
EP0510505B1 true EP0510505B1 (fr) 1995-08-16

Family

ID=6430002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106506A Expired - Lifetime EP0510505B1 (fr) 1991-04-20 1992-04-15 Dispositif d'étirage dans une press

Country Status (3)

Country Link
EP (1) EP0510505B1 (fr)
DE (2) DE4112945A1 (fr)
ES (1) ES2077907T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322061C1 (de) * 1993-07-02 1994-12-01 Schaefer Maschbau Wilhelm Vorrichtung zum gleichzeitigen Herstellen mehrerer Teilhohlkörper nach dem Innenhochdruck-Umformverfahren
DE4441442A1 (de) * 1994-11-23 1996-05-30 Erfurt Umformtechnik Gmbh Wechseleinrichtung im fahrbaren Werkzeugträger für Pressen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405316A1 (de) * 1984-02-15 1985-08-22 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Verschiebbares hydrokissen als ziehkissen fuer stufenpresse mit schiebetisch
DE3406526A1 (de) * 1984-02-23 1985-09-12 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Schiebetisch mit eingebautem blechhalterrahmen

Also Published As

Publication number Publication date
DE4112945A1 (de) 1992-10-22
DE59203261D1 (de) 1995-09-21
ES2077907T3 (es) 1995-12-01
EP0510505A1 (fr) 1992-10-28

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