JPS5678956A - Preparation of wheel made of high molecular material having high central portion around ground engaging surface - Google Patents
Preparation of wheel made of high molecular material having high central portion around ground engaging surfaceInfo
- Publication number
- JPS5678956A JPS5678956A JP15592279A JP15592279A JPS5678956A JP S5678956 A JPS5678956 A JP S5678956A JP 15592279 A JP15592279 A JP 15592279A JP 15592279 A JP15592279 A JP 15592279A JP S5678956 A JPS5678956 A JP S5678956A
- Authority
- JP
- Japan
- Prior art keywords
- wheel
- metal mold
- resin
- barrel
- taken out
- 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
- Casters (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
PURPOSE: To obtain a barrel like castor wheel having no molding burrs in a central large diameter portion thereof by a method wherein a split surface of a metal mold is positioned in the vicinity of an end portion of the wheel to be molded as well as, by utilizing the heat shrinkability of a resin, a molded product is taken out from the metal mold.
CONSTITUTION: In a method for producing the castor wheel having a central portion having a diameter larger than that of both ends thereof, for example, a barrel like shape, the split surface 6 formed by a movable side metal mold 1 consisted of a core bush 1a, a core plate 1b and a metal mold mounting plate 1c and a fixed side metal mold 2 is arranged in the vicinity of an end portion of the barrel like wheel to be molded and a resin is injected into a wheel molding chamber 3 of the metal mold and, after said resin is cooled, the metal molds 1, 2 are opened and the molded product is taken out by using a protruded pin 19. Because the resin has solidification shrinkability, heat shrinkability and elastic shrink deformability, the molded product is easily taken out from the mold. Because burrs are not formed in a central large diameter portion which is a ground engaging surface, this wheel has good appearance and braking property.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54155922A JPS5812145B2 (en) | 1979-11-30 | 1979-11-30 | Method for manufacturing wheels made of high-polymer material with medium to high ground contact surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54155922A JPS5812145B2 (en) | 1979-11-30 | 1979-11-30 | Method for manufacturing wheels made of high-polymer material with medium to high ground contact surface |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5678956A true JPS5678956A (en) | 1981-06-29 |
JPS5812145B2 JPS5812145B2 (en) | 1983-03-07 |
Family
ID=15616435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54155922A Expired JPS5812145B2 (en) | 1979-11-30 | 1979-11-30 | Method for manufacturing wheels made of high-polymer material with medium to high ground contact surface |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5812145B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63307919A (en) * | 1987-06-10 | 1988-12-15 | Polyplastics Co | Molding method for tape reel |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6322345A (en) * | 1986-07-08 | 1988-01-29 | 東洋製罐株式会社 | Three piece can and manufacture thereof |
JP7103821B2 (en) | 2018-03-30 | 2022-07-20 | 本田技研工業株式会社 | Coil for rotary electric machine and rotary electric machine equipped with this |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5015776A (en) * | 1973-06-14 | 1975-02-19 |
-
1979
- 1979-11-30 JP JP54155922A patent/JPS5812145B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5015776A (en) * | 1973-06-14 | 1975-02-19 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63307919A (en) * | 1987-06-10 | 1988-12-15 | Polyplastics Co | Molding method for tape reel |
JPH0510210B2 (en) * | 1987-06-10 | 1993-02-09 | Polyplastics Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS5812145B2 (en) | 1983-03-07 |
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