JPS5774135A - High pressure injection molding method and device therefor - Google Patents

High pressure injection molding method and device therefor

Info

Publication number
JPS5774135A
JPS5774135A JP15159580A JP15159580A JPS5774135A JP S5774135 A JPS5774135 A JP S5774135A JP 15159580 A JP15159580 A JP 15159580A JP 15159580 A JP15159580 A JP 15159580A JP S5774135 A JPS5774135 A JP S5774135A
Authority
JP
Japan
Prior art keywords
pressure
injection molding
cylinder
injection
during
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
JP15159580A
Other languages
Japanese (ja)
Other versions
JPS6227651B2 (en
Inventor
Tadatoshi Sone
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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine Co 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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP15159580A priority Critical patent/JPS5774135A/en
Publication of JPS5774135A publication Critical patent/JPS5774135A/en
Publication of JPS6227651B2 publication Critical patent/JPS6227651B2/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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/82—Hydraulic or pneumatic circuits

Abstract

PURPOSE:To effect easily high pressure injection molding, especially precision injection molding by operating hydraulic pressure that is boosted by a pressure augmenting cylinder only during the pressure preservation process and keeping pressure during the pressure preservation process higher than the maximum pressure during the injection. CONSTITUTION:When, after filling, the change-over valve moves to the position (a) to change-over for the pressure preservation process, hydraulic pressure from a hydraulic source 13 works on the oil chamber 10 of a pressure boosting cylinder 7. The oil pressure in the oil chamber 11 of an injection cylinder 3 is kept in by check valves 11 and 15, and the hydraulic pressure is multiplied by (d4/d3)<2> through the larger diameter d4 and smaller diameter d3 of a piston 8, and a piston 4 of the injection cylinder 3 stays as pushed forward until the pressure preservation is completed.
JP15159580A 1980-10-29 1980-10-29 High pressure injection molding method and device therefor Granted JPS5774135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15159580A JPS5774135A (en) 1980-10-29 1980-10-29 High pressure injection molding method and device therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15159580A JPS5774135A (en) 1980-10-29 1980-10-29 High pressure injection molding method and device therefor

Publications (2)

Publication Number Publication Date
JPS5774135A true JPS5774135A (en) 1982-05-10
JPS6227651B2 JPS6227651B2 (en) 1987-06-16

Family

ID=15521950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15159580A Granted JPS5774135A (en) 1980-10-29 1980-10-29 High pressure injection molding method and device therefor

Country Status (1)

Country Link
JP (1) JPS5774135A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149820A (en) * 1984-08-16 1986-03-11 Mitsubishi Metal Corp Injection molding method
JPS63242621A (en) * 1987-03-31 1988-10-07 Mitsubishi Metal Corp Method for injection molding
CN104859119A (en) * 2015-05-14 2015-08-26 大连理工大学 High-pressure injection module for ordinary hydraulic injection molding machines
CN106476234A (en) * 2015-08-25 2017-03-08 宁波优诺姆机械有限公司 A kind of hydraulic circuit structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5080358A (en) * 1973-11-21 1975-06-30
JPS5119052A (en) * 1974-08-08 1976-02-16 Fujitsu Ltd Kobunshizairyono seikeihoho

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5080358A (en) * 1973-11-21 1975-06-30
JPS5119052A (en) * 1974-08-08 1976-02-16 Fujitsu Ltd Kobunshizairyono seikeihoho

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149820A (en) * 1984-08-16 1986-03-11 Mitsubishi Metal Corp Injection molding method
US4882117A (en) * 1984-08-16 1989-11-21 Mitsubishi Kinzoku Kabushiki Kaisha Injection molding process for molten plastic
JPS63242621A (en) * 1987-03-31 1988-10-07 Mitsubishi Metal Corp Method for injection molding
JPH0478093B2 (en) * 1987-03-31 1992-12-10 Mitsubishi Materials Corp
CN104859119A (en) * 2015-05-14 2015-08-26 大连理工大学 High-pressure injection module for ordinary hydraulic injection molding machines
CN106476234A (en) * 2015-08-25 2017-03-08 宁波优诺姆机械有限公司 A kind of hydraulic circuit structure

Also Published As

Publication number Publication date
JPS6227651B2 (en) 1987-06-16

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