JPS56129134A - Manufacture of bolt with knob - Google Patents

Manufacture of bolt with knob

Info

Publication number
JPS56129134A
JPS56129134A JP3452980A JP3452980A JPS56129134A JP S56129134 A JPS56129134 A JP S56129134A JP 3452980 A JP3452980 A JP 3452980A JP 3452980 A JP3452980 A JP 3452980A JP S56129134 A JPS56129134 A JP S56129134A
Authority
JP
Japan
Prior art keywords
bolt
shaft
knob
inserting hole
forming 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.)
Granted
Application number
JP3452980A
Other languages
Japanese (ja)
Other versions
JPS5923976B2 (en
Inventor
Akio Takayama
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 JP3452980A priority Critical patent/JPS5923976B2/en
Publication of JPS56129134A publication Critical patent/JPS56129134A/en
Publication of JPS5923976B2 publication Critical patent/JPS5923976B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To preclude resin from flowing into the shaft side of the bolt and prevent the production of a fin around the outer periphery of the shaft by a method wherein the knob is formed in a condition that a forming cavity and a shaft inserting hole are isolated by an annular protuberance abutting against the rear side of the head for the bolt.
CONSTITUTION: Molds 11, 12 are assembled in a condition that the shaft 16 is inserted into the inserting hole 17 and the bolt 15 is set in the mold 11 so that the rear face of the head 19 is abutted against the upper surface of the annular protuberance 18, thereafter, the resin is supplied into the forming cavity 14. The forming cavity 14 and the inserting hole 17 are brought into a condition that both of them are isolated perfectly and the resin, poured into the forming cavity 14 and forming the knob 13, will only surround the outer periphery of the annular protuberance 18 and will never be caused to flow into the inserting hole 17 side. Therefore, the fin will never be produced on the shaft 16 and the bolt with the knob, withdrawn out of the molds 11, 12 be releasing them, may be handled as a product without applying a fin-removing work thereto.
COPYRIGHT: (C)1981,JPO&Japio
JP3452980A 1980-03-14 1980-03-14 Manufacturing method for bolts with knobs Expired JPS5923976B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3452980A JPS5923976B2 (en) 1980-03-14 1980-03-14 Manufacturing method for bolts with knobs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3452980A JPS5923976B2 (en) 1980-03-14 1980-03-14 Manufacturing method for bolts with knobs

Publications (2)

Publication Number Publication Date
JPS56129134A true JPS56129134A (en) 1981-10-09
JPS5923976B2 JPS5923976B2 (en) 1984-06-06

Family

ID=12416794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3452980A Expired JPS5923976B2 (en) 1980-03-14 1980-03-14 Manufacturing method for bolts with knobs

Country Status (1)

Country Link
JP (1) JPS5923976B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02111276U (en) * 1989-02-20 1990-09-05

Also Published As

Publication number Publication date
JPS5923976B2 (en) 1984-06-06

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