JPS5483964A - Injection speed pattern control device for injection molding machine - Google Patents

Injection speed pattern control device for injection molding machine

Info

Publication number
JPS5483964A
JPS5483964A JP15055477A JP15055477A JPS5483964A JP S5483964 A JPS5483964 A JP S5483964A JP 15055477 A JP15055477 A JP 15055477A JP 15055477 A JP15055477 A JP 15055477A JP S5483964 A JPS5483964 A JP S5483964A
Authority
JP
Japan
Prior art keywords
injection
pressure
valve
controller
molding machine
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
JP15055477A
Other languages
Japanese (ja)
Inventor
Masao Takagi
Hiromi Horikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15055477A priority Critical patent/JPS5483964A/en
Publication of JPS5483964A publication Critical patent/JPS5483964A/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
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material

Landscapes

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

Abstract

PURPOSE:To provide the title control device of low price, being capable of easily equipping to a conventional injection molding machine, designed to control the injection speed pattern by requlating the pressure of the oil to be supplied to the injection cylinder using a proportional electrmagnetic pressure regulating valve. CONSTITUTION:A proportional electromagnetic pressure regulating valve 12 is connected, through a hydraulic pressur pilot pipe 10, to the injection pressure control valve 8, while the controller 9 linked to both the displacement transducer 4 and pressure transducer 5 is connected, through a servo amplifier 11, to be solenoid 12a of the valve 12. When the injection process tarts, a signal corresponding to the displacement of the injection screw 3 is sent, through the transducer 4, to the controller 9, and an injection pressure signal equivalent to the injection speed determined corresponding to said injection stroke is then instructed, from the controller 9, through the amplifier 11, to the valve 12; thus the pressure of the oil to be supplied to the injection cylinder 2 can be regulated to determine at any value corresponding to the stroke of the screw 3.
JP15055477A 1977-12-16 1977-12-16 Injection speed pattern control device for injection molding machine Pending JPS5483964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15055477A JPS5483964A (en) 1977-12-16 1977-12-16 Injection speed pattern control device for injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15055477A JPS5483964A (en) 1977-12-16 1977-12-16 Injection speed pattern control device for injection molding machine

Publications (1)

Publication Number Publication Date
JPS5483964A true JPS5483964A (en) 1979-07-04

Family

ID=15499407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15055477A Pending JPS5483964A (en) 1977-12-16 1977-12-16 Injection speed pattern control device for injection molding machine

Country Status (1)

Country Link
JP (1) JPS5483964A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195633A (en) * 1981-05-14 1982-12-01 Hehl Karl Controller for hydraulic circuit of plastic injection molding machine
JPS60112701U (en) * 1984-12-06 1985-07-30 カヤバ工業株式会社 Ultra high pressure control device
JPH0516197A (en) * 1991-07-08 1993-01-26 Toyo Mach & Metal Co Ltd Method for controlling injection of injection molding machine
JP3139769B2 (en) * 1992-12-04 2001-03-05 日立建機株式会社 Hydraulic regeneration device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895458A (en) * 1972-03-22 1973-12-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895458A (en) * 1972-03-22 1973-12-07

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195633A (en) * 1981-05-14 1982-12-01 Hehl Karl Controller for hydraulic circuit of plastic injection molding machine
JPS60112701U (en) * 1984-12-06 1985-07-30 カヤバ工業株式会社 Ultra high pressure control device
JPS642961Y2 (en) * 1984-12-06 1989-01-25
JPH0516197A (en) * 1991-07-08 1993-01-26 Toyo Mach & Metal Co Ltd Method for controlling injection of injection molding machine
JP3139769B2 (en) * 1992-12-04 2001-03-05 日立建機株式会社 Hydraulic regeneration device

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