JPS5613151A - Synthetic resin injecting method - Google Patents

Synthetic resin injecting method

Info

Publication number
JPS5613151A
JPS5613151A JP8894879A JP8894879A JPS5613151A JP S5613151 A JPS5613151 A JP S5613151A JP 8894879 A JP8894879 A JP 8894879A JP 8894879 A JP8894879 A JP 8894879A JP S5613151 A JPS5613151 A JP S5613151A
Authority
JP
Japan
Prior art keywords
mold
nozzle
gate
tip
periphery
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
JP8894879A
Other languages
Japanese (ja)
Inventor
Shigeto Aoki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8894879A priority Critical patent/JPS5613151A/en
Publication of JPS5613151A publication Critical patent/JPS5613151A/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
    • B29C45/20—Injection nozzles
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C2045/2766—Heat insulation between nozzle and mould
    • B29C2045/2769—Insulating layer of injected material

Landscapes

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

Abstract

PURPOSE:To prevent overheating of a mold and concentration of a pressing force, by a method wherein a periphery of a nozzle tip makes contact with a mold surface at a position away from a gate of the mold, and a nozzle port end is positioned facing the gate through the medium of a gap provided between the nozzle port end and the mold surface. CONSTITUTION:A periphery 11, formed in a flat, of a tip of a nozzle 1 makes contact with a mold surface at a position away from a gate 6 of a mold 4, and a nozzle port end 12 is positioned facing the gate 6 through the medium of a minute gap 7 which sizes below 0.3mm. in width. Molten resin is then injected into a cavity 5 of the mold 4. The nozzle 1 makes contact with the mold at only the periphery 11 of the tip, which results in an extremely small contact area and in a reduced heat transition as well. Besides, a thin section film 8 produced at a nozzle tip surface acts as a heat insulating layer. Thereby the mold 4 is prevented from being heated by the nozzle 1 and the nozzle 1 is kept from being cooled by the mold 4. Furthermore, the nozzle contacts the mold surface at a position away from the gate 6, whereby stress concentration to the gate can be eliminated.
JP8894879A 1979-07-13 1979-07-13 Synthetic resin injecting method Pending JPS5613151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8894879A JPS5613151A (en) 1979-07-13 1979-07-13 Synthetic resin injecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8894879A JPS5613151A (en) 1979-07-13 1979-07-13 Synthetic resin injecting method

Publications (1)

Publication Number Publication Date
JPS5613151A true JPS5613151A (en) 1981-02-09

Family

ID=13957086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8894879A Pending JPS5613151A (en) 1979-07-13 1979-07-13 Synthetic resin injecting method

Country Status (1)

Country Link
JP (1) JPS5613151A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62144283U (en) * 1986-03-04 1987-09-11
DE4408683C2 (en) * 1994-03-15 2003-07-24 Unitemp S A Injection nozzle for injection molds

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117360A (en) * 1976-03-26 1977-10-01 Yoshino Kogyosho Co Ltd Injection molder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117360A (en) * 1976-03-26 1977-10-01 Yoshino Kogyosho Co Ltd Injection molder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62144283U (en) * 1986-03-04 1987-09-11
DE4408683C2 (en) * 1994-03-15 2003-07-24 Unitemp S A Injection nozzle for injection molds

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