EP0974410A3 - Machine with hydraulically controlled counterpressure holding element - Google Patents

Machine with hydraulically controlled counterpressure holding element Download PDF

Info

Publication number
EP0974410A3
EP0974410A3 EP99850120A EP99850120A EP0974410A3 EP 0974410 A3 EP0974410 A3 EP 0974410A3 EP 99850120 A EP99850120 A EP 99850120A EP 99850120 A EP99850120 A EP 99850120A EP 0974410 A3 EP0974410 A3 EP 0974410A3
Authority
EP
European Patent Office
Prior art keywords
counterpressure
embossing
counterpressure element
machine
hydraulic cylinder
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Withdrawn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
EP99850120A
Other languages
German (de)
French (fr)
Other versions
EP0974410A2 (en
Inventor
Technology Ab Ep
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.)
EP Technology AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0974410A2 publication Critical patent/EP0974410A2/en
Publication of EP0974410A3 publication Critical patent/EP0974410A3/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Withdrawn legal-status Critical Current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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The invention relates to a machine with a hydraulically controlled counterpressure element. The machine comprises a frame and top and lower machine parts (1, 2) in a conventional way for performing the embossing. According to the invention the counterpressure element (6, 11) is connected to a hydraulic cylinder (4, 12), said counterpressure element engaging the plate (3). The hydraulic cylinder (4, 12) is connected to a hydraulic circuit having a controllable hydraulic pressure, so that the counterpressure element is pressed back at the controlled pressure during an embossing operation. The counterpressure element may be included in a holding means to hold the plate securely during the embossing. According to the invention a machine part (1) is then connected to a positive counterpressure element (10) and another machine part (2) is connected to a hydraulic cylinder (4), said hydraulic cylinder (4) having a plunger and a stem (5) connected to a gripping means (6) holding the plate (3) together with the positive counterpressure element (10), such that the plunger during an embossing operation is pressed back at a controlled pressure. The holding means provides a secure holding through the whole press operation. The counterpressure element may also be included in an embossing counterpressure element, in which the counterpressure may be set in order to achieve a pre-embossing or a pressure controlled embossing. The invention may be applied to all types of machines in which counterpressure elements are required.
EP99850120A 1998-07-17 1999-07-09 Machine with hydraulically controlled counterpressure holding element Withdrawn EP0974410A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9802566 1998-07-17
SE9802566A SE518856C2 (en) 1998-07-17 1998-07-17 Tool with hydraulically controlled counterbar

Publications (2)

Publication Number Publication Date
EP0974410A2 EP0974410A2 (en) 2000-01-26
EP0974410A3 true EP0974410A3 (en) 2003-04-23

Family

ID=20412109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99850120A Withdrawn EP0974410A3 (en) 1998-07-17 1999-07-09 Machine with hydraulically controlled counterpressure holding element

Country Status (2)

Country Link
EP (1) EP0974410A3 (en)
SE (1) SE518856C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0215528D0 (en) * 2002-07-05 2002-08-14 Naylor Ian Multiple task foiling machine
US11292047B2 (en) * 2019-05-03 2022-04-05 Ford Global Technologies Mechanical die pressure monitoring system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035005A1 (en) * 1990-11-03 1992-05-07 Erfurt Umformtechnik Gmbh Holding down plate for sheet metal blank during drawing operation - is actuated by hydraulic pistons which are independent of metal forming press movement
EP0565347A2 (en) * 1992-04-07 1993-10-13 Toyota Jidosha Kabushiki Kaisha Method and apparatus for measuring blank holding force acting on pressure ring of a press
EP0692323A2 (en) * 1994-07-15 1996-01-17 Toyota Jidosha Kabushiki Kaisha Press having cushioning cylinders each having two chambers whose pressure difference is adjustable to control blank-holding force
EP0806256A2 (en) * 1996-05-06 1997-11-12 Müller-Weingarten AG Method for controlling the material flow during the drawing of sheet metal parts and device for carrying out the method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035005A1 (en) * 1990-11-03 1992-05-07 Erfurt Umformtechnik Gmbh Holding down plate for sheet metal blank during drawing operation - is actuated by hydraulic pistons which are independent of metal forming press movement
EP0565347A2 (en) * 1992-04-07 1993-10-13 Toyota Jidosha Kabushiki Kaisha Method and apparatus for measuring blank holding force acting on pressure ring of a press
EP0692323A2 (en) * 1994-07-15 1996-01-17 Toyota Jidosha Kabushiki Kaisha Press having cushioning cylinders each having two chambers whose pressure difference is adjustable to control blank-holding force
EP0806256A2 (en) * 1996-05-06 1997-11-12 Müller-Weingarten AG Method for controlling the material flow during the drawing of sheet metal parts and device for carrying out the method

Also Published As

Publication number Publication date
EP0974410A2 (en) 2000-01-26
SE518856C2 (en) 2002-11-26
SE9802566L (en) 2000-01-18
SE9802566D0 (en) 1998-07-17

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