JPS56129134A - Manufacture of bolt with knob - Google Patents
Manufacture of bolt with knobInfo
- 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
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 Therefore, the fin will never be produced on the shaft 16 and the bolt with the knob, withdrawn out of the molds 11, 12 be releasing them, may be handled as a product without applying a fin-removing work thereto.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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02111276U (en) * | 1989-02-20 | 1990-09-05 |
-
1980
- 1980-03-14 JP JP3452980A patent/JPS5923976B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5923976B2 (en) | 1984-06-06 |
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