JPS559885A - Constriction equipment for injection molding machine - Google Patents

Constriction equipment for injection molding machine

Info

Publication number
JPS559885A
JPS559885A JP8345578A JP8345578A JPS559885A JP S559885 A JPS559885 A JP S559885A JP 8345578 A JP8345578 A JP 8345578A JP 8345578 A JP8345578 A JP 8345578A JP S559885 A JPS559885 A JP S559885A
Authority
JP
Japan
Prior art keywords
oil
valve
chamber
oil chamber
excited
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
JP8345578A
Other languages
Japanese (ja)
Inventor
Takao Takahashi
Hiroshi Kumazaki
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 JP8345578A priority Critical patent/JPS559885A/en
Publication of JPS559885A publication Critical patent/JPS559885A/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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic
    • B29C45/6764—Mould opening, closing or clamping devices hydraulic using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement

Landscapes

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

Abstract

PURPOSE:To improve the productivity of an injection molding machine by changing the volume in a cylinder in relation to the movement of a die and making it form a differential circuit, so that a pump having small volume can constrict the mold while accelerating a molding cycle. CONSTITUTION:At the time when the die is moving forward, if the electromagnetic switch valve M1-M3 becomes non-exciting, the working oil from an oil pressure source 11 will operate on cylinder chamber 9 for quick feeding and an oil chamber 3. The working oil in the oil chamber 4 operates on the oil chamber 3 partially after passing through the valve M3, and the rest on the cylinder chamber 9 through the valve M2. As a result, a movable die plate 6 moves forward while the excited valve M3 lets the working oil operate on the oil chamber 3 only. As for the opening of the mold after the end of shaping, the working oil in the oil chamber 3 operates on the oil chamber 4 as the valves M1 and M2 are excited while the valve M3 is not excited, and the movable die plate moves backward.
JP8345578A 1978-07-07 1978-07-07 Constriction equipment for injection molding machine Pending JPS559885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8345578A JPS559885A (en) 1978-07-07 1978-07-07 Constriction equipment for injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8345578A JPS559885A (en) 1978-07-07 1978-07-07 Constriction equipment for injection molding machine

Publications (1)

Publication Number Publication Date
JPS559885A true JPS559885A (en) 1980-01-24

Family

ID=13802916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8345578A Pending JPS559885A (en) 1978-07-07 1978-07-07 Constriction equipment for injection molding machine

Country Status (1)

Country Link
JP (1) JPS559885A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63116819A (en) * 1986-10-31 1988-05-21 クラウスーマツフアイ・アクチエンゲゼルシヤフト Closing device for injection molding machine
JP2006123427A (en) * 2004-10-29 2006-05-18 Toshiba Mach Co Ltd Mold drive device of molding machine
JP2010082680A (en) * 2008-10-02 2010-04-15 Toshiba Mach Co Ltd Mold clamping apparatus
JP2011037187A (en) * 2009-08-17 2011-02-24 Meiki Co Ltd Mold clamping device and method of operating the same
CN103671349A (en) * 2012-08-31 2014-03-26 苏州立注机械有限公司 Upper cover of die combining oil cylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63116819A (en) * 1986-10-31 1988-05-21 クラウスーマツフアイ・アクチエンゲゼルシヤフト Closing device for injection molding machine
JP2006123427A (en) * 2004-10-29 2006-05-18 Toshiba Mach Co Ltd Mold drive device of molding machine
JP2010082680A (en) * 2008-10-02 2010-04-15 Toshiba Mach Co Ltd Mold clamping apparatus
JP2011037187A (en) * 2009-08-17 2011-02-24 Meiki Co Ltd Mold clamping device and method of operating the same
CN103671349A (en) * 2012-08-31 2014-03-26 苏州立注机械有限公司 Upper cover of die combining oil cylinder

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