JPS55156041A - Injection molding machine - Google Patents

Injection molding machine

Info

Publication number
JPS55156041A
JPS55156041A JP6326279A JP6326279A JPS55156041A JP S55156041 A JPS55156041 A JP S55156041A JP 6326279 A JP6326279 A JP 6326279A JP 6326279 A JP6326279 A JP 6326279A JP S55156041 A JPS55156041 A JP S55156041A
Authority
JP
Japan
Prior art keywords
pressure
cavity
runner
resin
detector
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
JP6326279A
Other languages
Japanese (ja)
Other versions
JPS6330130B2 (en
Inventor
Yukio Inaguma
Mitsuru Asai
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.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP6326279A priority Critical patent/JPS55156041A/en
Publication of JPS55156041A publication Critical patent/JPS55156041A/en
Publication of JPS6330130B2 publication Critical patent/JPS6330130B2/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 prevent irregularities in the dimension of a metal mold or the like due to the temperature fluctuation by providing a runner between a gate and a nozzle, and continuing the constant value control of a cavity pressure until the pressure at said runner increases to a predetermined pressure. CONSTITUTION:After placing a resin in a cavity 2, the inner pressure of the cavity is detected by a cavity pressure detector 17. On the basis of an output signal of the detector 17, the resin within the cavity is not defficient, and retained under pressure set beforehand in a range where the resin does not exude from the junction of the metal mold 1. At the same time, the pressure increases in a runner 4 provided between the gate 3 and the nozzle 5 is detected by a runner pressure detector 16. This detected value is compared on the basis of the output signal from the detector 17 with a preset value of the pressure increasing when the cooling of the gate part 3 advances until the resin within the cavity 2 does not counter flow, and after this detected value reaches the preset value, the oil pressure supplied to a hydraulic cylinder 9 is lowered.
JP6326279A 1979-05-24 1979-05-24 Injection molding machine Granted JPS55156041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6326279A JPS55156041A (en) 1979-05-24 1979-05-24 Injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6326279A JPS55156041A (en) 1979-05-24 1979-05-24 Injection molding machine

Publications (2)

Publication Number Publication Date
JPS55156041A true JPS55156041A (en) 1980-12-04
JPS6330130B2 JPS6330130B2 (en) 1988-06-16

Family

ID=13224182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6326279A Granted JPS55156041A (en) 1979-05-24 1979-05-24 Injection molding machine

Country Status (1)

Country Link
JP (1) JPS55156041A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109228109A (en) * 2018-08-21 2019-01-18 江苏大学 A kind of method and apparatus of ultrasonic vibration aid injection molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109228109A (en) * 2018-08-21 2019-01-18 江苏大学 A kind of method and apparatus of ultrasonic vibration aid injection molding

Also Published As

Publication number Publication date
JPS6330130B2 (en) 1988-06-16

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