EP0402800B1 - Jumelle de pression dans l'appareil d'emboutissage d'une presse - Google Patents

Jumelle de pression dans l'appareil d'emboutissage d'une presse Download PDF

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Publication number
EP0402800B1
EP0402800B1 EP90110929A EP90110929A EP0402800B1 EP 0402800 B1 EP0402800 B1 EP 0402800B1 EP 90110929 A EP90110929 A EP 90110929A EP 90110929 A EP90110929 A EP 90110929A EP 0402800 B1 EP0402800 B1 EP 0402800B1
Authority
EP
European Patent Office
Prior art keywords
pressure
segments
drawing apparatus
tool
cheek
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
EP90110929A
Other languages
German (de)
English (en)
Other versions
EP0402800A1 (fr
Inventor
Siegfried Baur
Rudi Brandstetter
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 EP0402800A1 publication Critical patent/EP0402800A1/fr
Application granted granted Critical
Publication of EP0402800B1 publication Critical patent/EP0402800B1/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
    • B21D24/02—Die-cushions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/068—Drive connections, e.g. pivotal

Definitions

  • the invention relates in particular to drawing apparatuses, the pressure cheeks used in these.
  • the pressure cheek of a drawing apparatus transfers the force to be applied by the pressure cylinders to the sheet metal holder as a counterforce to the drawing process and the force and movement to eject the workpieces from the drawing tool.
  • the pressure cylinders can be readjusted to different initial pressures and the pressures during the drawing process.
  • the sheet metal holders of the tools are rigid structures in themselves, as are the pressure cheeks in the drawing apparatus, so that the difference between the discretely set pressures and pressure profiles in the pressure cylinders has only a limited effect on the workpiece or its edge areas.
  • DE-A-3 807 683 further describes pressure control pressure regulating means for the application of pressure cylinders in the phase preceding the drawing process, in the phase of the drawing process and in the phase following the drawing process.
  • the pressure cheek is divided into individual segments, which can be acted upon independently of each other by a pressure cylinder.
  • a press table which has three pressure cheeks.
  • Each of the pressure cheeks works with a single air cylinder.
  • the pressure cheeks can be clamped together to form a rigid structure by means of displaceable mechanical bolts.
  • Each of the segments of the pressure cheek is thus sensitive to the requirements of drawing in partial (edge) areas of the workpiece or several workpieces to be formed simultaneously.
  • a proven component is used for the connection between the segments of the pressure cheek.
  • the item number 2 indicates a sliding table that can be moved into and out of the press.
  • the sliding table carries a tool, indicated with 19, a tool set or several individual tools.
  • the tools have sheet metal holders with which pressure bolts 4 guided in the perforated plate 16 of the sliding table interact. All pressure bolts are set.
  • the push pins are held for the sliding table change by a thin-walled pin plate 3 from below in the sliding table.
  • the drawing apparatus is essentially formed by pressure cylinder 9 for pulling and possibly a pressure cylinder 10 for ejection, the pressure cylinders being held on the base plate 14, further by guided pressure rods 8 and a pressure cheek 5 which can be raised and lowered.
  • the pressure cheek is divided into individual ones Segments 6, here in three segments.
  • the push rods are by means of balls or the like.
  • Joints 13 placed against the segments from below. The segments have shoulders, as a result of which protruding stops 11 are formed on the outer (outer) segments, which corresponding assumptions in the the inner (inner) seggent grasp in a way that spans the inner segment.
  • Fig. 2 shows the pressure attack of the pressure cylinder 9 in the corner regions 7 of the segments 6. At 20, guide means for the inner segment or segments are indicated.
  • the design of a tool it may be sensible to set only pressure bolts 4 above the inner segment 6 according to FIG. 4.
  • the four pressure cylinders acting on the inner segment via the outer segments are controlled.
  • the pressure cylinders located on the outside and acting on the outer segments are actuated in the sense of a parallel raising and lowering of the outer segments.
  • an assignment of the perforated plate 16 with pressure pin 4 according to FIG. 5 may be appropriate.
  • the figures 6 to 9 serve to compare the invention and the prior art.
  • 6 shows three pressure cheeks 5 according to DE-C 951 146 mentioned at the beginning. Each of the pressure cheeks can be acted upon by a pressure cylinder (arrow 18). The pressure cheeks can be connected to each other to form a rigid structure by means of locking bolts 17.
  • FIG. 7 has a pressure cheek 5 with three, or as indicated here, a plurality of segments 6. Each of the segments can be acted upon independently by pressure cylinders (arrow 18). The pressure cylinders act on the segments in the corner regions, as has been shown in FIG. 2.
  • the figures 8 and 9 show configurations according to FIGS. 1 to 5 with differently arranged, protruding stops 11.

Claims (3)

  1. Appareil d'emboutissage dans une presse comportant des vérins de poussée (9, 10) qui agissent au moyen d'un plateau de poussée (5) sur des serre-flans et la pièce à travailler dans l'outil (19), où le plateau de poussée (5) est divisé en segments (6) susceptibles de s'appuyer individuellement ou en commun contre des serre-flans d'un outil (19) ou d'un jeu d'outils ou, en cas d'utilisation de plusieurs outils ou jeux d'outils, contre des serre-flans sollicités différemment mais simultanément, des vérins de poussée (9) attaquant chacune des zones d'angle (7) des segments (6) et où, dans chaque paire de segments adjacents l'un de ceux-ci comporte des butées proéminentes (11) qui sont engagées sous l'autre segment.
  2. Appareil d' emboutissage selon la revendication 1 caractérisé en ce qu'une articulation (12) à rotule ou similaire est montée entre chaque butée (11) située sur l'un de deux segments adjacents (6) et une surface d'appui (15) située sur l'autre segment.
  3. Appareil selon la revendication 1 ou 2 caractérisé en ce que les vérins de poussée (9) sont appliqués contre les butées proéminentes (11) en sollicitant les zones d'angle (7) de segments adjacents (6).
EP90110929A 1989-06-14 1990-06-09 Jumelle de pression dans l'appareil d'emboutissage d'une presse Expired - Lifetime EP0402800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919372A DE3919372A1 (de) 1989-06-14 1989-06-14 Druckwange im ziehapparat einer presse
DE3919372 1989-06-14

Publications (2)

Publication Number Publication Date
EP0402800A1 EP0402800A1 (fr) 1990-12-19
EP0402800B1 true EP0402800B1 (fr) 1994-03-30

Family

ID=6382705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110929A Expired - Lifetime EP0402800B1 (fr) 1989-06-14 1990-06-09 Jumelle de pression dans l'appareil d'emboutissage d'une presse

Country Status (3)

Country Link
EP (1) EP0402800B1 (fr)
DE (2) DE3919372A1 (fr)
ES (1) ES2052101T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1275537B (it) * 1995-07-14 1997-08-07 Siti Spa Dispositivo atto ad essere utilizzato con un apparato di pressatura
DE19928422A1 (de) † 1999-06-23 2000-12-28 Mueller Weingarten Maschf Presse zum Außenhochdruckformen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951146C (de) * 1952-08-30 1956-10-25 Weingarten Ag Maschf Presslufteinrichtung fuer Blechziehpressen
EP0401534A1 (fr) * 1989-05-13 1990-12-12 Maschinenfabrik Müller-Weingarten AG Dispositif d'étirage hydraulique dans une table de presse à simple ou a double effet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494169A (en) * 1966-01-21 1970-02-10 Nat Steel Corp Deep drawing method and apparatus
DE2331754C3 (de) * 1973-06-22 1978-11-30 G. Iempelkamp Gmbh & Co, 4150 Krefeld Hydraulische Rohrbiegepresse
US3947005A (en) * 1974-05-31 1976-03-30 Wallis Bernard J Fluid spring assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951146C (de) * 1952-08-30 1956-10-25 Weingarten Ag Maschf Presslufteinrichtung fuer Blechziehpressen
EP0401534A1 (fr) * 1989-05-13 1990-12-12 Maschinenfabrik Müller-Weingarten AG Dispositif d'étirage hydraulique dans une table de presse à simple ou a double effet

Also Published As

Publication number Publication date
DE59005154D1 (de) 1994-05-05
EP0402800A1 (fr) 1990-12-19
DE3919372A1 (de) 1990-12-20
ES2052101T3 (es) 1994-07-01

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