EP0245371A1 - Organe d'appui pour une presse a decouper. - Google Patents

Organe d'appui pour une presse a decouper.

Info

Publication number
EP0245371A1
EP0245371A1 EP86906703A EP86906703A EP0245371A1 EP 0245371 A1 EP0245371 A1 EP 0245371A1 EP 86906703 A EP86906703 A EP 86906703A EP 86906703 A EP86906703 A EP 86906703A EP 0245371 A1 EP0245371 A1 EP 0245371A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic cylinder
press
counter
piston
pump
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
EP86906703A
Other languages
German (de)
English (en)
Other versions
EP0245371B2 (fr
EP0245371B1 (fr
Inventor
Peter Wallisch
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.)
AEW AUTOMATEN, ELEKTROGERAETE-WERKZEUGBAU GES.M.B.
Original Assignee
AEW AUTOMAT ELEKTROGE WERKZEUG
AEW AUTOMATEN ELEKTROGERATE WE
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3548405&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0245371(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by AEW AUTOMAT ELEKTROGE WERKZEUG, AEW AUTOMATEN ELEKTROGERATE WE filed Critical AEW AUTOMAT ELEKTROGE WERKZEUG
Publication of EP0245371A1 publication Critical patent/EP0245371A1/fr
Application granted granted Critical
Publication of EP0245371B1 publication Critical patent/EP0245371B1/fr
Publication of EP0245371B2 publication Critical patent/EP0245371B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools

Definitions

  • the invention relates to a counter holder for a punch press consisting of an upper part and a lower part.
  • the material is clamped around the part to be punched out using a press plate on the punch press, so that the material can only flow in the cutting direction.
  • the material which is usually fed in strip form, is placed outside the cutting contour e.g. held by a ring spike, and supported within the cutting contour by the counter-holder serving as an ejector.
  • the cutting gap between the press ram and the cutting plate having the cutting contour is only a few hundredths of a millimeter and the cutting speed is relatively low.
  • Mechanical and hydraulic precision punching presses with a fixed and with a movable punch are known.
  • the press upper part containing the punch and the press lower part carrying the cutting plate are generally connected to one another by guide columns.
  • the counter-holding force is applied in the hydraulic press, for example by means of a hydraulic piston.
  • the main disadvantage of this design is that pumps and corresponding controls are required to apply the hydraulic counter-holding force, which are integrated in the fine-punch presses designed as special presses. The design effort associated with such presses is significant and the presses are therefore relatively expensive.
  • the invention aims to provide a counter-holder, which allows fine punching operations to be carried out without great design effort, etc. also with common punch presses.
  • the invention relates to a counterholder for a punch press for punchable metals consisting of an upper part and a lower part, with a hydraulic cylinder exerting the counterforce;
  • this counterholder is characterized in that the hydraulic cylinder is fastened to an annular body which can be inserted into the lower part of the punch press is which is penetrated by the hydraulic piston connected to a counter-holder part and forms a stop for the upper end position of the hydraulic piston, the hydraulic cylinder having a fluid inlet with a solenoid valve and a fluid outlet with a check valve, which via a common fluid line to a pressure vessel and to a Pump, preferably a hand pump, can be connected to preset the counter-holding force.
  • the counterholder according to the invention is installed in a stamping press of a conventional type.
  • the punch press essentially consists of a movable upper part A and a fixed lower part B, the lower part B having a table 1 which carries a holder 2 for a cutting plate 3.
  • the cutting plate 3 contains an opening with the contour K of the part to be punched out and a counter-holder part 4 arranged in this opening.
  • the upper part A is formed in two parts and is guided by means of columns 5 extending away from the holder 2.
  • the upper part A comprises a punch 6 and a pressing plate 7 surrounding it and movable relative to the punch by interposing rubber springs G with a workpiece holder 8.
  • the device according to the invention is arranged in the table 1 below the holder 2 and held by means of an annular body 9.
  • a plate 10 On this ring body 9, a plate 10 is attached, which carries a hydraulic cylinder 11.
  • a piston 12 protruding through the plate 10 into the hydraulic cylinder 11 is fastened by means of a further plate 13 to the supports 14 for the counter-holder part 4 passing through the holder 2, the ring body 9 forming an upper stop 9 'for the piston 12.
  • the hydraulic cylinder 11 has an inlet 15 with a solenoid valve 16 designed as a slide valve and an outlet 17 with a check valve 18.
  • the inlet and the outlet are connected to a fluid line 19, to which one Hand pump 20 and a pressure vessel 21 are connected.
  • the device shown works as follows: With the help of the hand pump 20, a predetermined holding force is set in the pressure vessel 21, which depends on the thickness and type of the material to be punched.
  • the workpiece (lead frame) S is clamped between the cutting plate 3 and the pressing plate 7, an annular spike 7 'provided on the pressing plate 7 penetrating into the material outside the cutting contour K. This holds the material strip S and prevents the material from flowing in a direction other than the cutting direction.
  • the punch 6 begins to cut into the material and the counter-holding part 4 counteracts the pressure on the piston 12 previously set by means of the hand pump 20.
  • the counter-holder part 4 and thus the piston 12 are pushed back in the cylinder 11 and the hydraulic medium is pressed into the pressure container 21 via the check valve 18.
  • the press opens, the check valve 18 blocking the backflow of the hydraulic medium into the cylinder 11, so that the counter-holding part 4 and the piston 12 maintain their lower end position.
  • the solenoid valve 16 is e.g. opened via a cam (not shown) on the press, so that the hydraulic medium flows into the cylinder 11 under the preset pressure.
  • the piston 12 together with the counter-holder part 4 are moved upward and the stamped part is ejected with the counter-holder serving as an ejector.
  • a major advantage of the invention is that the entire unit consisting of ring body 9, hydraulic cylinder 11 together with valves 16, 18, fluid line 19, pressure vessel 21 and hand pump 20 is installed as a retrofit insert in a conventional punch press, which is not specifically designed as a fine punch press can, wherein the ring body 9 acts as an adapter or can be designed according to the dimensions of the respective press.
  • the embodiment shown can be part of the general inventive idea can be modified in various ways.
  • a differently operated pump can also be provided.

Landscapes

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

Abstract

L'organe d'appui est destiné à une presse à découper des métaux, comportant une partie supérieure et une partie inférieure et munie d'un vérin hydraulique (11) engendrant une force d'appui. Le vérin est monté sur un corps annulaire (9) qui est disposé dans la partie inférieure (B) de la presse, et est traversé par le piston (12, 13) du vérin supportant un contre-poinçon (4) d'appui et qui constitue une butée (9') de fin de course supérieure du piston. Le vérin (11) présente un orifice d'admission (15) muni d'une vanne magnétique (16) et un orifice de sortie (17) muni d'une soupape de non-retour (18). La vanne et la soupape sont reliées par une conduite commune (19) de fluide à un réservoir de pression (21) et à une pompe (20) de réglage de la force d'appui.
EP86906703A 1985-11-13 1986-11-04 Organe d'appui pour une presse a decouper Expired - Lifetime EP0245371B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT329985A AT384186B (de) 1985-11-13 1985-11-13 Gegenhalter fuer eine stanzpresse
AT3299/85 1985-11-13

Publications (3)

Publication Number Publication Date
EP0245371A1 true EP0245371A1 (fr) 1987-11-19
EP0245371B1 EP0245371B1 (fr) 1989-10-18
EP0245371B2 EP0245371B2 (fr) 1993-04-21

Family

ID=3548405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86906703A Expired - Lifetime EP0245371B2 (fr) 1985-11-13 1986-11-04 Organe d'appui pour une presse a decouper

Country Status (4)

Country Link
EP (1) EP0245371B2 (fr)
AT (1) AT384186B (fr)
DE (1) DE3666366D1 (fr)
WO (1) WO1987002916A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9919353B2 (en) 2013-09-11 2018-03-20 Webo Werkzeugbau Oberschwaben Gmbh Method and device for precision cutting of workpieces in a press

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000053357A1 (fr) * 1999-03-09 2000-09-14 Dynacraft Industries Sdn. Bdh. Outil d'estampage de precision
DE102015106859B4 (de) * 2015-05-04 2018-06-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Scherschneiden hochfester Werkstoffe und Schneidwerkzeuganordnung
CN108748308A (zh) * 2018-06-20 2018-11-06 南京汇龙橡胶制品有限公司 一种橡胶制品边料处理的装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB869526A (en) * 1957-04-30 1961-05-31 Almatic A G Method of and device for fine stamping
DE1169404B (de) * 1959-09-02 1964-05-06 Kienzle Apparate Gmbh Werkzeug zum Stanzschneiden von Blech
DE1552049A1 (de) * 1966-01-28 1969-12-18 Philips Patentverwaltung Vorrichtung fuer Pressen zum Auswerfen von Stanz-Teilen
US3570343A (en) * 1968-10-18 1971-03-16 Dro Systems Inc Di Structure for fine blanking
DE1805984B2 (de) * 1968-10-30 1971-09-16 Schnittpresse mit zuschnitthalter und zuschnittgegenhalter
JPS5865526A (ja) † 1981-10-15 1983-04-19 Amada Co Ltd プレス機械
CH669748A5 (fr) † 1984-11-28 1989-04-14 Feintool Int Holding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8702916A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9919353B2 (en) 2013-09-11 2018-03-20 Webo Werkzeugbau Oberschwaben Gmbh Method and device for precision cutting of workpieces in a press

Also Published As

Publication number Publication date
EP0245371B2 (fr) 1993-04-21
EP0245371B1 (fr) 1989-10-18
WO1987002916A1 (fr) 1987-05-21
AT384186B (de) 1987-10-12
DE3666366D1 (en) 1989-11-23
ATA329985A (de) 1987-03-15

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