JPS56134A - Pressure-holding control method for injection-molded and device thereof - Google Patents

Pressure-holding control method for injection-molded and device thereof

Info

Publication number
JPS56134A
JPS56134A JP7461879A JP7461879A JPS56134A JP S56134 A JPS56134 A JP S56134A JP 7461879 A JP7461879 A JP 7461879A JP 7461879 A JP7461879 A JP 7461879A JP S56134 A JPS56134 A JP S56134A
Authority
JP
Japan
Prior art keywords
pressure
amplified
injection
displacement
deviation
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
JP7461879A
Other languages
Japanese (ja)
Other versions
JPS636341B2 (en
Inventor
Masao Takagi
Hiromi Horikawa
Moriji Kamoshita
Terunori Maruyama
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 JP7461879A priority Critical patent/JPS56134A/en
Publication of JPS56134A publication Critical patent/JPS56134A/en
Publication of JPS636341B2 publication Critical patent/JPS636341B2/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

Landscapes

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

Abstract

PURPOSE:To produce a precise structure component in a high dimension tolerance, by a method wherein a state of molten resin in a pressure-holding process ia always watched, and the pressure and flow of a hydraulic oil fed to an injection cylinder is adjusted properly. CONSTITUTION:A molten resin pressure in a cavity 6 is detected by means of a pressure sensor 8, and is amplified by a pressure transducer 9. Displacement of a screw 2 is detected by a displacement sensor 10, and is amplified by a displacement transducer 11. In the meantime, an injection speed pattern and a mold inside pressure action, which are previously specified, are set. A deviation is found in such a manner as computes by comparison of input signals from the sensors 8 and 10 with the respective set inputs to setting means 13, 14, 15, 16, and 17. A correction control signal is sent from a controller 12 corresponding to said deviation, said signal being amplified by a power amplifier 18. This causes a proper control of the pressure and flow of a hydraulic oil fed to an injection cylinder 3.
JP7461879A 1979-06-15 1979-06-15 Pressure-holding control method for injection-molded and device thereof Granted JPS56134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7461879A JPS56134A (en) 1979-06-15 1979-06-15 Pressure-holding control method for injection-molded and device thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7461879A JPS56134A (en) 1979-06-15 1979-06-15 Pressure-holding control method for injection-molded and device thereof

Publications (2)

Publication Number Publication Date
JPS56134A true JPS56134A (en) 1981-01-06
JPS636341B2 JPS636341B2 (en) 1988-02-09

Family

ID=13552334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7461879A Granted JPS56134A (en) 1979-06-15 1979-06-15 Pressure-holding control method for injection-molded and device thereof

Country Status (1)

Country Link
JP (1) JPS56134A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001456A1 (en) * 1984-09-04 1986-03-13 Fanuc Ltd System for maintaining pressure in an injection molding machine
JPS61255824A (en) * 1985-05-08 1986-11-13 Meiki Co Ltd Injection molding machine
JPS62104727A (en) * 1985-11-01 1987-05-15 Canon Inc Controlling of injection molder
JPS62257822A (en) * 1986-05-02 1987-11-10 Japan Steel Works Ltd:The Control method of molding of injection molding machine
JPH01171831A (en) * 1987-12-26 1989-07-06 Sumitomo Heavy Ind Ltd Control device for injection molding machine
JPH01200928A (en) * 1988-02-05 1989-08-14 Sumitomo Heavy Ind Ltd Speed/pressure control system of injection molding machine
JPH01295816A (en) * 1988-05-24 1989-11-29 Shin Etsu Chem Co Ltd Injection molding apparatus
US4910233A (en) * 1986-03-11 1990-03-20 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Process for crosslinking methylene-containing aromatic polymers with ionizing radiation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001456A1 (en) * 1984-09-04 1986-03-13 Fanuc Ltd System for maintaining pressure in an injection molding machine
US4734025A (en) * 1984-09-04 1988-03-29 Fanuc Ltd. Injection molding machine dwell control system
JPS61255824A (en) * 1985-05-08 1986-11-13 Meiki Co Ltd Injection molding machine
JPS62104727A (en) * 1985-11-01 1987-05-15 Canon Inc Controlling of injection molder
US4910233A (en) * 1986-03-11 1990-03-20 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Process for crosslinking methylene-containing aromatic polymers with ionizing radiation
JPS62257822A (en) * 1986-05-02 1987-11-10 Japan Steel Works Ltd:The Control method of molding of injection molding machine
JPH01171831A (en) * 1987-12-26 1989-07-06 Sumitomo Heavy Ind Ltd Control device for injection molding machine
JPH01200928A (en) * 1988-02-05 1989-08-14 Sumitomo Heavy Ind Ltd Speed/pressure control system of injection molding machine
JPH01295816A (en) * 1988-05-24 1989-11-29 Shin Etsu Chem Co Ltd Injection molding apparatus

Also Published As

Publication number Publication date
JPS636341B2 (en) 1988-02-09

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