JPS56151160A - Die clamping device - Google Patents

Die clamping device

Info

Publication number
JPS56151160A
JPS56151160A JP5505380A JP5505380A JPS56151160A JP S56151160 A JPS56151160 A JP S56151160A JP 5505380 A JP5505380 A JP 5505380A JP 5505380 A JP5505380 A JP 5505380A JP S56151160 A JPS56151160 A JP S56151160A
Authority
JP
Japan
Prior art keywords
pressure oil
hydraulic chamber
main hydraulic
diameter
pressure
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
JP5505380A
Other languages
Japanese (ja)
Other versions
JPS6354477B2 (en
Inventor
Hideo Kuroda
Ryoichi Inoue
Yoshio Kawazu
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP5505380A priority Critical patent/JPS56151160A/en
Publication of JPS56151160A publication Critical patent/JPS56151160A/en
Publication of JPS6354477B2 publication Critical patent/JPS6354477B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic

Abstract

PURPOSE:To boost the main hydraulic chamber by the sectional area ratio of a large diameter to a small diameter and reduce the time of die clamping cycle by building a boosting cylinder into a die clamping cylinder, conducting pressure oil to the main hydraulic chamber and the large-diameter side of the boosting cylinder and conducting the same to the small-diameter side through the main hydraulic chamber. CONSTITUTION:If, in mold parting, pressure oil is fed to the main circuit (a) by energizing the solenoid of a directional control valve 14 with solenoid, the pressure oil is conducted from a pilot operated check valve 17 to a main hydraulic chamber D via a port 8. On the other hand, the pressure oil is conducted from a port 13 to the 1st chamber A through the ports (g), (h) of the valve 14. Then, the pressure oil in the 3rd chamber C is boosted by the sectional area ratio S1/S2 of the large-diameter part 11a and small-diameter part 11b of a piston 11, and in the end, this boosts the pressure oil in the main hydraulic chamber D. Hence, the pressure of the outlet side port 8 goes higher than the pressure on the main circuit (a) side of the check valve 17, thereby closing the check valve 17. Also, the pressure boosted by the piston 11 acts upon the die opening side sectional area SA, thereby providing the die opening force necessary for mold parting.
JP5505380A 1980-04-25 1980-04-25 Die clamping device Granted JPS56151160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5505380A JPS56151160A (en) 1980-04-25 1980-04-25 Die clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5505380A JPS56151160A (en) 1980-04-25 1980-04-25 Die clamping device

Publications (2)

Publication Number Publication Date
JPS56151160A true JPS56151160A (en) 1981-11-24
JPS6354477B2 JPS6354477B2 (en) 1988-10-28

Family

ID=12987928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5505380A Granted JPS56151160A (en) 1980-04-25 1980-04-25 Die clamping device

Country Status (1)

Country Link
JP (1) JPS56151160A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0224921U (en) * 1988-08-04 1990-02-19
CN102179950A (en) * 2010-08-02 2011-09-14 湖南协力液压有限公司 Novel oil press

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5034055A (en) * 1973-07-26 1975-04-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5034055A (en) * 1973-07-26 1975-04-02

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0224921U (en) * 1988-08-04 1990-02-19
CN102179950A (en) * 2010-08-02 2011-09-14 湖南协力液压有限公司 Novel oil press

Also Published As

Publication number Publication date
JPS6354477B2 (en) 1988-10-28

Similar Documents

Publication Publication Date Title
CA2099469A1 (en) Hydraulic pressure transformer
JPS56151160A (en) Die clamping device
EP0608415A4 (en) Hydraulic circuit having pressure compensation valve.
US2608059A (en) Hydraulic pressure booster
ES8706240A1 (en) Hydraulic assistance device.
DE3775594D1 (en) HYDRAULIC CONTROL DEVICE.
JPS56165556A (en) Die clamping device
JPS5718867A (en) Pressure control valve
JPS57179404A (en) Cylinder device
JPS5581100A (en) Hydraulic compressor and control device thereof
JPS5718802A (en) Pneumatic and hydraulic pressurizing cylinder device
JPS57118836A (en) Hydraulic driving device for knock-out device of press machine
ES8704822A1 (en) Hydraulic brake booster.
JPS59103008A (en) Cylinder device
JPS55110651A (en) Hydraulic booster
JPS57160563A (en) Die clamping device for molding machine
JPS5740182A (en) Pilot actuating solenoid valve
JPS57151459A (en) Brake hydraulic control valve apparatus
JPS6430872A (en) Hydraulic brake device
JPH01126404A (en) Cylinder device
DE3860559D1 (en) CONTROL VALVE WITH HYDRAULIC SELF-HOLDING.
JPS57130853A (en) Hydraulic brake booster
JPS62188601U (en)
JPS57191036A (en) Control circuit for injection process
DE3876412D1 (en) EMERGENCY CONTROL DEVICE.