EP0069201A3 - Drawing cushion device for presses - Google Patents

Drawing cushion device for presses Download PDF

Info

Publication number
EP0069201A3
EP0069201A3 EP82103208A EP82103208A EP0069201A3 EP 0069201 A3 EP0069201 A3 EP 0069201A3 EP 82103208 A EP82103208 A EP 82103208A EP 82103208 A EP82103208 A EP 82103208A EP 0069201 A3 EP0069201 A3 EP 0069201A3
Authority
EP
European Patent Office
Prior art keywords
presses
cylinder chamber
compressed air
pressure
check valve
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.)
Withdrawn
Application number
EP82103208A
Other languages
German (de)
French (fr)
Other versions
EP0069201A2 (en
Inventor
Gregor Geist
Klaus Dünisch
Rolf Zeidler
Wieland Petter
Gerd Zemann
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.)
Umformtechnik Herbert Warnke VEB
Original Assignee
Umformtechnik Herbert Warnke VEB
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 Umformtechnik Herbert Warnke VEB filed Critical Umformtechnik Herbert Warnke VEB
Publication of EP0069201A2 publication Critical patent/EP0069201A2/en
Publication of EP0069201A3 publication Critical patent/EP0069201A3/en
Withdrawn legal-status Critical Current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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/02—Die-cushions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

Die Erfindung betrifft ein pneumatisch wirkendes Zieh­ kissen für Pressen, insbesondere für mechanische Pressen zur Blechumformung. The invention relates to a pneumatically acting pull cushions for presses, in particular for mechanical presses for sheet metal forming.

Durch die Erfindung soll eine höhere Wirtschaftlichkeit auf Grund besserer Ausnutzung der zugeführten Energie sowie die Einsparung von Material und technologischem Aufwand durch kleinere Kissenabmessungen und den Weg­ fall der Kühleinrichtungen für den Ölkreislauf erreicht wer­ den. Dazu wird der für den Auswerfvorgang nicht benötigte Anteil der während der Stößeltiefststellung im Kissen gespeicherten Energie zum Aufbau eines hohen Betriebs­ druckes im Kissen sowie zur Erzeugung von Druckluft für andere Verbraucher genutzt. The aim of the invention is to be more economical due to better utilization of the energy supplied as well as saving material and technological Effort due to smaller pillow dimensions and the way case of cooling devices for the oil circuit the. For this, the one that is not required for the ejection process Proportion of the pressure in the cushion during the plunger depression stored energy to build a high operation pressure in the pillow and for the production of compressed air for other consumers.

Erfindungsgemäß geschieht das dadurch, daß der Kis­ senkolben (3) als zweiseitig mit Druckluft beaufschlagbarer Differenzkolben ausgeführt ist und daß der obere Teil (14) des Zylinderraumes (2) mit einem Rückschlagventil (15) versehen und über eine Rohrleitung (16), welche mit einem weiteren Rückschlagventil (17) und/oder einem steuerbaren Wegeventil (18) versehen ist, mit dem unteren Teil (12) desselben verbunden ist und daß der untere Teil (12) des Zylinderraumes (2) über ein Druckbegrenzungsventil (20) mit einem Druckluftbehälter (21) verbunden ist. According to the invention this happens in that the Kis piston (3) as a pressurized air on two sides Differential piston is executed and that the upper part (14) the cylinder chamber (2) with a check valve (15) provided and via a pipe (16), which with a another check valve (17) and / or a controllable Directional control valve (18) is provided with the lower part (12) the same is connected and that the lower part (12) of the Cylinder chamber (2) with a pressure relief valve (20) a compressed air tank (21) is connected.

EP82103208A 1981-07-08 1982-04-16 Drawing cushion device for presses Withdrawn EP0069201A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD231561 1981-07-08
DD23156181A DD206469A3 (en) 1981-07-08 1981-07-08 PNEUMATIC ACTIVE PILLOW FOR PRESSING

Publications (2)

Publication Number Publication Date
EP0069201A2 EP0069201A2 (en) 1983-01-12
EP0069201A3 true EP0069201A3 (en) 1983-10-26

Family

ID=5532191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103208A Withdrawn EP0069201A3 (en) 1981-07-08 1982-04-16 Drawing cushion device for presses

Country Status (3)

Country Link
EP (1) EP0069201A3 (en)
JP (1) JPS589727A (en)
DD (1) DD206469A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521525C2 (en) * 1995-05-09 1999-10-14 Eoc Normalien Gmbh & Co Kg Gas cylinder system
DE102010019324B4 (en) 2010-05-03 2015-05-07 Schuler Pressen Gmbh Hydraulic drawing cushion
CN110576099B (en) * 2019-09-29 2020-08-11 林昊澄 Part stamping mechanism driven by water pressure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD82108A (en) *
DE1957401A1 (en) * 1969-11-14 1971-06-09 Schuler Gmbh L Sheet metal press equalisation device for - workpiece holder
FR2449490A1 (en) * 1979-02-22 1980-09-19 Galdabini Renzo Hydraulic stamping press with counter jack holding blank on die - uses e.g. pump to absorb power of counter jack descent for transfer to prim jack

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD82108A (en) *
DE1957401A1 (en) * 1969-11-14 1971-06-09 Schuler Gmbh L Sheet metal press equalisation device for - workpiece holder
FR2449490A1 (en) * 1979-02-22 1980-09-19 Galdabini Renzo Hydraulic stamping press with counter jack holding blank on die - uses e.g. pump to absorb power of counter jack descent for transfer to prim jack

Also Published As

Publication number Publication date
JPS589727A (en) 1983-01-20
EP0069201A2 (en) 1983-01-12
DD206469A3 (en) 1984-01-25

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB IT

PUAL Search report despatched

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STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19840208

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZEIDLER, ROLF

Inventor name: PETTER, WIELAND

Inventor name: GEIST, GREGOR

Inventor name: ZEMANN, GERD

Inventor name: DUENISCH, KLAUS