JPS56118832A - Injection molding of perforated product - Google Patents

Injection molding of perforated product

Info

Publication number
JPS56118832A
JPS56118832A JP2237680A JP2237680A JPS56118832A JP S56118832 A JPS56118832 A JP S56118832A JP 2237680 A JP2237680 A JP 2237680A JP 2237680 A JP2237680 A JP 2237680A JP S56118832 A JPS56118832 A JP S56118832A
Authority
JP
Japan
Prior art keywords
boring
boring pin
manufacture
guide
moving
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
JP2237680A
Other languages
Japanese (ja)
Inventor
Hitoshi Fukao
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.)
Kunimori Kagaku Co Ltd
Original Assignee
Kunimori Kagaku Co 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 Kunimori Kagaku Co Ltd filed Critical Kunimori Kagaku Co Ltd
Priority to JP2237680A priority Critical patent/JPS56118832A/en
Publication of JPS56118832A publication Critical patent/JPS56118832A/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
    • 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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks

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 manufacture a perforated product having fine appearance without weld line by an injection method by boring a shearing hole in a molding inside cavity by means of a boring pin. CONSTITUTION:A molten resin is injected into a cavity 3 and immediately before or after the solidification of the molten resin, a shearing hole is bored in the molding by moving a boring pin 7 to the left side. The boring pin 7 is moved toward a mobile mold 2 side, or to the left side, by lowering a guide 5 with the falling of a cylinder 12 and also by moving the head 7b of a boring pin 7 along the inclined side 5a of the guide 5. This method can apply to the manufacture of automobile meter cover, the front panel of audio-instrument, etc., having clamping hole and regulating knob.
JP2237680A 1980-02-25 1980-02-25 Injection molding of perforated product Pending JPS56118832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2237680A JPS56118832A (en) 1980-02-25 1980-02-25 Injection molding of perforated product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2237680A JPS56118832A (en) 1980-02-25 1980-02-25 Injection molding of perforated product

Publications (1)

Publication Number Publication Date
JPS56118832A true JPS56118832A (en) 1981-09-18

Family

ID=12080913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2237680A Pending JPS56118832A (en) 1980-02-25 1980-02-25 Injection molding of perforated product

Country Status (1)

Country Link
JP (1) JPS56118832A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197619A (en) * 1987-02-13 1988-08-16 Pijiyon Kk Drilling method of injection molding and drilling device therefor
JPS63283920A (en) * 1987-05-18 1988-11-21 Kunio Miyajima Molding mold
FR3072591A1 (en) * 2017-10-20 2019-04-26 Faurecia Interieur Industrie MOLD FOR MANUFACTURING RIBBED PIECE AND CORRESPONDING METHOD
CN111716646A (en) * 2019-03-22 2020-09-29 苏州汉扬精密电子有限公司 Injection mold structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197619A (en) * 1987-02-13 1988-08-16 Pijiyon Kk Drilling method of injection molding and drilling device therefor
JPS63283920A (en) * 1987-05-18 1988-11-21 Kunio Miyajima Molding mold
FR3072591A1 (en) * 2017-10-20 2019-04-26 Faurecia Interieur Industrie MOLD FOR MANUFACTURING RIBBED PIECE AND CORRESPONDING METHOD
CN111716646A (en) * 2019-03-22 2020-09-29 苏州汉扬精密电子有限公司 Injection mold structure

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