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JPS5795429A - Mold for injection and compression molding - Google Patents

Mold for injection and compression molding

Info

Publication number
JPS5795429A
JPS5795429A JP17100380A JP17100380A JPS5795429A JP S5795429 A JPS5795429 A JP S5795429A JP 17100380 A JP17100380 A JP 17100380A JP 17100380 A JP17100380 A JP 17100380A JP S5795429 A JPS5795429 A JP S5795429A
Authority
JP
Japan
Prior art keywords
molten resin
gate
pin
injection
mold
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
JP17100380A
Other languages
Japanese (ja)
Inventor
Takami Sugawara
Tetsuya Kaneko
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 JP17100380A priority Critical patent/JPS5795429A/en
Publication of JPS5795429A publication Critical patent/JPS5795429A/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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • B29C2045/5625—Closing of the feed opening before or during compression
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • B29C2045/5635—Mould integrated compression drive means

Landscapes

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

Abstract

PURPOSE:To form products by injection and compression without shrinkage and with uniform section thickness by shutting off the gate section with a pin after injecting molten resin into a mold cavity and further compressing the molten resin. CONSTITUTION:Molten resin is injected into a mold cavity 1 from a gate 18, the gate 16 is shut off with a pin 13 by actuating a cylinder 14, and further an inclined wedge 7 is moved to the left by the actuation of a cylinder 10 and at the same time a movable insertion block 3 is raised to compress the molten resin in the cavity 1. Because the molten resin is compressed after the gate 16 is shut off by the pin 13, molded products have no shrinkage if they have 5-40mm. section thickness.
JP17100380A 1980-12-05 1980-12-05 Mold for injection and compression molding Pending JPS5795429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17100380A JPS5795429A (en) 1980-12-05 1980-12-05 Mold for injection and compression molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17100380A JPS5795429A (en) 1980-12-05 1980-12-05 Mold for injection and compression molding

Publications (1)

Publication Number Publication Date
JPS5795429A true JPS5795429A (en) 1982-06-14

Family

ID=15915297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17100380A Pending JPS5795429A (en) 1980-12-05 1980-12-05 Mold for injection and compression molding

Country Status (1)

Country Link
JP (1) JPS5795429A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664854A (en) * 1986-01-06 1987-05-12 Neolens, Inc. Injection molding equipment and method
US5686038A (en) * 1995-06-06 1997-11-11 The Boeing Company Resin transfer molding of composite materials that emit volatiles during processing
US5709893A (en) * 1995-06-06 1998-01-20 The Boeing Company Breathable tooling for forming parts from volatile-emitting composite materials
US6440351B1 (en) 1998-04-24 2002-08-27 Idemitsu Petrochemical Co., Ltd. Molding die drive unit, molding unit and molding method
CN102390187A (en) * 2011-07-07 2012-03-28 昆山飞宇精密模具有限公司 Electromechanical integrated automatic matrix switching mould
CN109648799A (en) * 2019-01-29 2019-04-19 深圳市金彩虹精密制造股份有限公司 Excessive injection molding means for correcting

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664854A (en) * 1986-01-06 1987-05-12 Neolens, Inc. Injection molding equipment and method
US5686038A (en) * 1995-06-06 1997-11-11 The Boeing Company Resin transfer molding of composite materials that emit volatiles during processing
US5709893A (en) * 1995-06-06 1998-01-20 The Boeing Company Breathable tooling for forming parts from volatile-emitting composite materials
US6440351B1 (en) 1998-04-24 2002-08-27 Idemitsu Petrochemical Co., Ltd. Molding die drive unit, molding unit and molding method
CN102390187A (en) * 2011-07-07 2012-03-28 昆山飞宇精密模具有限公司 Electromechanical integrated automatic matrix switching mould
CN109648799A (en) * 2019-01-29 2019-04-19 深圳市金彩虹精密制造股份有限公司 Excessive injection molding means for correcting

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