JPS5787339A - Method and device for forming center pin - Google Patents

Method and device for forming center pin

Info

Publication number
JPS5787339A
JPS5787339A JP16261980A JP16261980A JPS5787339A JP S5787339 A JPS5787339 A JP S5787339A JP 16261980 A JP16261980 A JP 16261980A JP 16261980 A JP16261980 A JP 16261980A JP S5787339 A JPS5787339 A JP S5787339A
Authority
JP
Japan
Prior art keywords
gate
center pin
pin
center
core
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
JP16261980A
Other languages
Japanese (ja)
Other versions
JPS5948738B2 (en
Inventor
Tsunehisa Watanabe
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.)
YKK Corp
Original Assignee
YKK Corp
Yoshida Kogyo KK
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 YKK Corp, Yoshida Kogyo KK filed Critical YKK Corp
Priority to JP16261980A priority Critical patent/JPS5948738B2/en
Publication of JPS5787339A publication Critical patent/JPS5787339A/en
Publication of JPS5948738B2 publication Critical patent/JPS5948738B2/en
Expired 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
    • B29C45/38—Cutting-off equipment for sprues or ingates
    • 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
    • B29C45/38—Cutting-off equipment for sprues or ingates
    • B29C2045/384—Cutting-off equipment for sprues or ingates cutting the sprue by a plunger movable into the runner channel

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 bore a center pin take-out hole without leaving gate mark, by forming a center pin by providing a direct gate in the center section of an ejection forming metallic mold, and also by cutting the gate by allowing a projecting pin, which is provided in the aforementioned metallic mold, to slindingly stick out before the center pin is solidified. CONSTITUTION:A gate 6 is provided in a third core 4 of a metallic mold composed of a cavity 1, first core 2, second core 3 and the third core 4, and the tip of the gate 6 is made to contact a hollow-section-forming cavity 5 as a direct gate 7 which has the same diameter as a center pin take-out hole. Further, a projecting pin 8 is provided in such a manner that it passes through the cavity 1 and its tip faces the gate 7. After the center pin is formed by injecting synthetic resin into the cavity 5, and before this synthetic resin is solidified, the projecting pin 8 is made to stick out and the gate section of the center section of the center pin is cut to bore a take-out hole, and then, the tip of the pin 8 is inserted into the gate 6 from the direct gate 7, and the mold is opened after the center pin is solidified, and by doing so, it is possible to obtain a weld-free center pin of a high accuracy.
JP16261980A 1980-11-20 1980-11-20 Method and device for forming inner plug Expired JPS5948738B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16261980A JPS5948738B2 (en) 1980-11-20 1980-11-20 Method and device for forming inner plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16261980A JPS5948738B2 (en) 1980-11-20 1980-11-20 Method and device for forming inner plug

Publications (2)

Publication Number Publication Date
JPS5787339A true JPS5787339A (en) 1982-05-31
JPS5948738B2 JPS5948738B2 (en) 1984-11-28

Family

ID=15758044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16261980A Expired JPS5948738B2 (en) 1980-11-20 1980-11-20 Method and device for forming inner plug

Country Status (1)

Country Link
JP (1) JPS5948738B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025874A1 (en) 2005-09-02 2007-03-08 BSH Bosch und Siemens Hausgeräte GmbH Receptacle for a household appliance and method and injection mould for the production thereof
CN103600459A (en) * 2013-10-25 2014-02-26 杭州之江开关股份有限公司 Breaker housing injection curing molding die based on thermosetting materials
EP3150303A1 (en) * 2015-09-29 2017-04-05 Sandvik Intellectual Property AB A moulding tool and a method for powder injection moulding a cemented carbide or cermet component
CN110450349A (en) * 2019-08-22 2019-11-15 陈小燕 The molding machine of weld mark is avoided in a kind of high polishing metal injection molding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62140663U (en) * 1986-02-28 1987-09-04

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025874A1 (en) 2005-09-02 2007-03-08 BSH Bosch und Siemens Hausgeräte GmbH Receptacle for a household appliance and method and injection mould for the production thereof
CN103600459A (en) * 2013-10-25 2014-02-26 杭州之江开关股份有限公司 Breaker housing injection curing molding die based on thermosetting materials
EP3150303A1 (en) * 2015-09-29 2017-04-05 Sandvik Intellectual Property AB A moulding tool and a method for powder injection moulding a cemented carbide or cermet component
CN107030287A (en) * 2015-09-29 2017-08-11 山特维克知识产权股份有限公司 The mould and method of powder injection molding hard alloy or cermet components
US10569332B2 (en) 2015-09-29 2020-02-25 Sandvik Intellectual Property Ab Moulding tool and method for powder injection moulding a cemented carbide or cermet component
CN110450349A (en) * 2019-08-22 2019-11-15 陈小燕 The molding machine of weld mark is avoided in a kind of high polishing metal injection molding
CN110450349B (en) * 2019-08-22 2022-02-18 一见塑胶制品(深圳)有限公司 Avoid forming device of weld mark in metal of high polishing is moulded plastics

Also Published As

Publication number Publication date
JPS5948738B2 (en) 1984-11-28

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