JPS55103938A - Forming device for plastic hinge - Google Patents

Forming device for plastic hinge

Info

Publication number
JPS55103938A
JPS55103938A JP1038579A JP1038579A JPS55103938A JP S55103938 A JPS55103938 A JP S55103938A JP 1038579 A JP1038579 A JP 1038579A JP 1038579 A JP1038579 A JP 1038579A JP S55103938 A JPS55103938 A JP S55103938A
Authority
JP
Japan
Prior art keywords
unit
pressure
hinge
hinge pin
cavity
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
JP1038579A
Other languages
Japanese (ja)
Inventor
Masamichi Takeshita
Masao Takagi
Hisashi Nichibe
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 JP1038579A priority Critical patent/JPS55103938A/en
Publication of JPS55103938A publication Critical patent/JPS55103938A/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
    • B29C45/5675—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 for making orifices in or through the moulded article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/22—Hinges, pivots

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 a perfect plastic hinge during molding operation under ordinary molding pressure by a method wherein the pressure of a resin in a metallic mold is detected, and a hinge forming means is driven when the pressure has reached a predetermined value. CONSTITUTION:A thermoplastic resin 6 flows into a metallic-mold cavity and reaches the end portion of the cavity, when it acts on a pressure detection unit 2, and a signal generated by the unit 2 is received by a control unit 1. Upon reception of the signal, the unit 1 controls a hinge pin driving unit 3 to push and project a slidable hinge pin 4, which is adjacent to and in contact with the unit 3, into the resin 6 in the cavity. A hinge portion 5 is formed by the thus projected hinge pin 4. With zero pressure detected by the unit 2, the hinge pin 4 is retracted through the function of the units 1 and 3.
JP1038579A 1979-02-02 1979-02-02 Forming device for plastic hinge Pending JPS55103938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1038579A JPS55103938A (en) 1979-02-02 1979-02-02 Forming device for plastic hinge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1038579A JPS55103938A (en) 1979-02-02 1979-02-02 Forming device for plastic hinge

Publications (1)

Publication Number Publication Date
JPS55103938A true JPS55103938A (en) 1980-08-08

Family

ID=11748644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1038579A Pending JPS55103938A (en) 1979-02-02 1979-02-02 Forming device for plastic hinge

Country Status (1)

Country Link
JP (1) JPS55103938A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470786A (en) * 1981-07-28 1984-09-11 Omron Tateisi Electronics Co. Molding apparatus with retractable preform support pins
JPS61171315A (en) * 1986-01-24 1986-08-02 Niigata Eng Co Ltd Reaction injection molding process
JPS6322620A (en) * 1986-07-16 1988-01-30 Dainippon Printing Co Ltd Method and apparatus for injection molding of molding having recessed part on its surface
US5409749A (en) * 1990-10-27 1995-04-25 Nissei Asb Machine Co., Ltd. Preform with a hanger having a connecting portion of a substantially circular cross-section
FR2770801A1 (en) * 1997-11-12 1999-05-14 Legrand Sa One-piece plastic component production for variably angled cable channel sections
EP1607206A1 (en) * 2003-01-21 2005-12-21 Techno Polymer Co., Ltd. Injection molding die, injection molding method, and weldless molded product
US7687003B2 (en) * 2004-12-08 2010-03-30 Visteon Global Technologies, Inc. Method of forming plastic part having hidden thin walled section
CN111716646A (en) * 2019-03-22 2020-09-29 苏州汉扬精密电子有限公司 Injection mold structure
DE102019127188B3 (en) * 2019-10-09 2021-03-25 Matthias Wexler Method for producing a plastic component by means of an injection molding process, device for this and plastic component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826239A (en) * 1971-08-10 1973-04-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826239A (en) * 1971-08-10 1973-04-06

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470786A (en) * 1981-07-28 1984-09-11 Omron Tateisi Electronics Co. Molding apparatus with retractable preform support pins
JPS61171315A (en) * 1986-01-24 1986-08-02 Niigata Eng Co Ltd Reaction injection molding process
JPH0317654B2 (en) * 1986-01-24 1991-03-08 Niigata Engineering Co Ltd
JPH0763983B2 (en) * 1986-07-16 1995-07-12 大日本印刷株式会社 Injection molding method and apparatus for molded article having concave portion on surface
JPS6322620A (en) * 1986-07-16 1988-01-30 Dainippon Printing Co Ltd Method and apparatus for injection molding of molding having recessed part on its surface
US5540579A (en) * 1990-10-27 1996-07-30 Nissei Asb Machine Co., Ltd. Injection mold used to mold a preform with a hanger
US5409749A (en) * 1990-10-27 1995-04-25 Nissei Asb Machine Co., Ltd. Preform with a hanger having a connecting portion of a substantially circular cross-section
FR2770801A1 (en) * 1997-11-12 1999-05-14 Legrand Sa One-piece plastic component production for variably angled cable channel sections
EP1607206A1 (en) * 2003-01-21 2005-12-21 Techno Polymer Co., Ltd. Injection molding die, injection molding method, and weldless molded product
EP1607206A4 (en) * 2003-01-21 2006-11-29 Techno Polymer Co Ltd Injection molding die, injection molding method, and weldless molded product
US7687003B2 (en) * 2004-12-08 2010-03-30 Visteon Global Technologies, Inc. Method of forming plastic part having hidden thin walled section
CN111716646A (en) * 2019-03-22 2020-09-29 苏州汉扬精密电子有限公司 Injection mold structure
DE102019127188B3 (en) * 2019-10-09 2021-03-25 Matthias Wexler Method for producing a plastic component by means of an injection molding process, device for this and plastic component

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