JPS5813201A - Hydarulic apparatus for press - Google Patents

Hydarulic apparatus for press

Info

Publication number
JPS5813201A
JPS5813201A JP10950181A JP10950181A JPS5813201A JP S5813201 A JPS5813201 A JP S5813201A JP 10950181 A JP10950181 A JP 10950181A JP 10950181 A JP10950181 A JP 10950181A JP S5813201 A JPS5813201 A JP S5813201A
Authority
JP
Japan
Prior art keywords
pump
amount
disgorging
press
operated
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.)
Pending
Application number
JP10950181A
Other languages
Japanese (ja)
Other versions
JPH0250321B2 (en
Inventor
Seiichi Hoshino
Original Assignee
Uchida Yuatsu Kiki Kogyo Kk
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 Uchida Yuatsu Kiki Kogyo Kk filed Critical Uchida Yuatsu Kiki Kogyo Kk
Priority to JP10950181A priority Critical patent/JPH0250321B2/ja
Publication of JPS5813201A publication Critical patent/JPS5813201A/en
Publication of JPH0250321B2 publication Critical patent/JPH0250321B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To decrease the disgorging amount from a hydraulic pump and reduce the driving force of the pump at the time when a press is operated without a load by a muthod wherein a pilot pump with a small disgorging amount is connected with a regulator in the feeding circuit of an actuator of hydraulic pressure for the press.
CONSTITUTION: As a hydraulic pump 2 of variable capacity type is operated without a load in such a time as a press is stopped, an opening and closing valve 15 of pilot pump 4 located at a position 15a is operated toward a position 15b and the pressed oil is introduced into a pilot piston 9, and the piston 9 make a switch valve 8 connect between the chamber 6a, 6b. By this force a piston 6 produces thrust toward the left, so that the disgorging amount of the pump 2 is decreased at nearly 30% of the maximum disgorging amount to reduce the driving amount of the pump 2.
COPYRIGHT: (C)1983,JPO&Japio
JP10950181A 1981-07-15 1981-07-15 Expired - Lifetime JPH0250321B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10950181A JPH0250321B2 (en) 1981-07-15 1981-07-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10950181A JPH0250321B2 (en) 1981-07-15 1981-07-15

Publications (2)

Publication Number Publication Date
JPS5813201A true JPS5813201A (en) 1983-01-25
JPH0250321B2 JPH0250321B2 (en) 1990-11-02

Family

ID=14511856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10950181A Expired - Lifetime JPH0250321B2 (en) 1981-07-15 1981-07-15

Country Status (1)

Country Link
JP (1) JPH0250321B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120902U (en) * 1984-07-12 1986-02-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120902U (en) * 1984-07-12 1986-02-06

Also Published As

Publication number Publication date
JPH0250321B2 (en) 1990-11-02

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