JPS57191036A - Control circuit for injection process - Google Patents

Control circuit for injection process

Info

Publication number
JPS57191036A
JPS57191036A JP7703581A JP7703581A JPS57191036A JP S57191036 A JPS57191036 A JP S57191036A JP 7703581 A JP7703581 A JP 7703581A JP 7703581 A JP7703581 A JP 7703581A JP S57191036 A JPS57191036 A JP S57191036A
Authority
JP
Japan
Prior art keywords
pipeline
flow rate
oil
injection
working oil
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
JP7703581A
Other languages
Japanese (ja)
Inventor
Shigeru Fujita
Shingo Yugawa
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 JP7703581A priority Critical patent/JPS57191036A/en
Publication of JPS57191036A publication Critical patent/JPS57191036A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To exactly stop the action of an injection plunger on the ending of charging process by using a system in which the sectional area of pipeline is altered by means of a direction switching valve or a flow rate control valve provided in the pipline of the working oil return port of an oil-pressure cylinder for injection. CONSTITUTION:During the injection process of an oil-pressure cylinder 2, the working oil return port 4 of a return side oil chamber 2a is connected to its pipeline 5 provided with a direction switching valve 6. Since two ways of circuits inclusive of a circuit through which working oil returns through a pipeline 8 provided with a flow rate controlling valve 7 can be selected and also the sectional area of the pipeline 8 can be altered by the flow rate controlling valve 7, any deceleration characteristic can be obtained.
JP7703581A 1981-05-21 1981-05-21 Control circuit for injection process Pending JPS57191036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7703581A JPS57191036A (en) 1981-05-21 1981-05-21 Control circuit for injection process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7703581A JPS57191036A (en) 1981-05-21 1981-05-21 Control circuit for injection process

Publications (1)

Publication Number Publication Date
JPS57191036A true JPS57191036A (en) 1982-11-24

Family

ID=13622496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7703581A Pending JPS57191036A (en) 1981-05-21 1981-05-21 Control circuit for injection process

Country Status (1)

Country Link
JP (1) JPS57191036A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501846A1 (en) * 1984-01-23 1985-08-01 Toshiba Kikai K.K., Tokio/Tokyo Process for controlling the injection moulding process of an injection moulding machine and device for carrying out the process
US4735760A (en) * 1985-01-24 1988-04-05 Toshiba Kikai Kabushiki Kaisha Method and apparatus for controlling injection step of injection molding machines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53129123A (en) * 1977-04-19 1978-11-10 Ube Industries Injection method of die casting machine and its device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53129123A (en) * 1977-04-19 1978-11-10 Ube Industries Injection method of die casting machine and its device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501846A1 (en) * 1984-01-23 1985-08-01 Toshiba Kikai K.K., Tokio/Tokyo Process for controlling the injection moulding process of an injection moulding machine and device for carrying out the process
US4735760A (en) * 1985-01-24 1988-04-05 Toshiba Kikai Kabushiki Kaisha Method and apparatus for controlling injection step of injection molding machines

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