JPS6457928A - Die cushioning device for press machine - Google Patents

Die cushioning device for press machine

Info

Publication number
JPS6457928A
JPS6457928A JP62214423A JP21442387A JPS6457928A JP S6457928 A JPS6457928 A JP S6457928A JP 62214423 A JP62214423 A JP 62214423A JP 21442387 A JP21442387 A JP 21442387A JP S6457928 A JPS6457928 A JP S6457928A
Authority
JP
Japan
Prior art keywords
blank holder
oil
servovalve
discharging
hydraulic
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
JP62214423A
Other languages
Japanese (ja)
Other versions
JPH0829366B2 (en
Inventor
Takamasa Arikawa
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP62214423A priority Critical patent/JPH0829366B2/en
Publication of JPS6457928A publication Critical patent/JPS6457928A/en
Publication of JPH0829366B2 publication Critical patent/JPH0829366B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Presses And Accessory Devices Thereof (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To reduce noise at press working time by supporting a blank holder liftably by using a hydraulic cushion cylinder and hydraulic lift cylinder and adjusting a servovalve so that the moving speed of a blank holder for an upper die slows down. CONSTITUTION:By the input of a detection signal 53 showing the position of an upper die 5 from a rotary encoder 52 of a position detector a control device 57 transmits a control signal 58 to a servovalve 36 based on a set signal 56 transmitted from a setter 55. The servovalve 36 executes the discharging of the oil fed from either one part of upper and lower oil chambers 21, 22, 31, 32 of the hydraulic cushion cylinders 2, 3 which are switched by a switching valve 35. In this case, the control of the pressing force of the hydraulic cushion cylinders 2, 3 and the descending speed adjustment of the blank holder 12 are executed by discharging the oil from the lower oil chambers 31, 32. A hydraulic lift cylinder 4 is extended and the bank holder 12 is ascended by discharging the oil from the upper oil chambers 21, 22. Consequently the generation of the noise at press working time is reduced and the lift speed of the blank holder 12 can be quickened.
JP62214423A 1987-08-28 1987-08-28 Die cushion device for press machine Expired - Fee Related JPH0829366B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62214423A JPH0829366B2 (en) 1987-08-28 1987-08-28 Die cushion device for press machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62214423A JPH0829366B2 (en) 1987-08-28 1987-08-28 Die cushion device for press machine

Publications (2)

Publication Number Publication Date
JPS6457928A true JPS6457928A (en) 1989-03-06
JPH0829366B2 JPH0829366B2 (en) 1996-03-27

Family

ID=16655544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62214423A Expired - Fee Related JPH0829366B2 (en) 1987-08-28 1987-08-28 Die cushion device for press machine

Country Status (1)

Country Link
JP (1) JPH0829366B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347698U (en) * 1989-09-12 1991-05-02
JPH0362696U (en) * 1989-10-23 1991-06-19
CN109127849A (en) * 2018-09-28 2019-01-04 南通市腾达锻压机床厂 The hydraulic pad device of hydraulic sheet metal drawing press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347698U (en) * 1989-09-12 1991-05-02
JPH0362696U (en) * 1989-10-23 1991-06-19
CN109127849A (en) * 2018-09-28 2019-01-04 南通市腾达锻压机床厂 The hydraulic pad device of hydraulic sheet metal drawing press

Also Published As

Publication number Publication date
JPH0829366B2 (en) 1996-03-27

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees