JPS56142049A - Forming mold for tread part of caster wheel - Google Patents
Forming mold for tread part of caster wheelInfo
- Publication number
- JPS56142049A JPS56142049A JP4520280A JP4520280A JPS56142049A JP S56142049 A JPS56142049 A JP S56142049A JP 4520280 A JP4520280 A JP 4520280A JP 4520280 A JP4520280 A JP 4520280A JP S56142049 A JPS56142049 A JP S56142049A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- mold
- concave groove
- tread part
- rim
- 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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
PURPOSE: To arrange so that the outflow of a molten rubber may be prevented to increase a forming pressure and a tread part providing a strong bonding strength with a rim be formed, by providing one set of a concave groove and a convex strip which fit to each other, on an external periphery of each annular inflow concave groove.
CONSTITUTION: After a wheel 31 is deposited on a lower mold 2, a solid rubber material is placed in an inflow groove 3 of the lower mold 2 from the inside and a soft rubber material outside of the former. Then an upper mold 1 is lowered from above to match the molds. At that time, a residual material rubber becomes soft sequentially on the way of descending of the upper mold 1 and flows out. However, when a fitting convex strip 5 begins to fit inside a fitting concave groove 6, a softening rubber pressure inside the mold mounts. Following this process, simultaneous with the joining of the upper and lower molds 1, 2, the overflow into the outside of the rubber is interrupted and the softening rubber flows into even a complicated shape part such as a hole 35 of a rim 33. Thus a tread part 39 is formed leaving no void inside.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4520280A JPS56142049A (en) | 1980-04-08 | 1980-04-08 | Forming mold for tread part of caster wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4520280A JPS56142049A (en) | 1980-04-08 | 1980-04-08 | Forming mold for tread part of caster wheel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56142049A true JPS56142049A (en) | 1981-11-06 |
JPS5757267B2 JPS5757267B2 (en) | 1982-12-03 |
Family
ID=12712673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4520280A Granted JPS56142049A (en) | 1980-04-08 | 1980-04-08 | Forming mold for tread part of caster wheel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56142049A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH051504U (en) * | 1991-06-28 | 1993-01-14 | 株式会社石川製作所 | Caster wheels |
JP2006219022A (en) * | 2005-02-10 | 2006-08-24 | Nippon Rubber Kagaku Kk | Elastic conductive wheel and its manufacturing method |
WO2014106908A1 (en) * | 2013-01-07 | 2014-07-10 | 株式会社ゼロワンデザイン | Wheel for bag |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928669U (en) * | 1982-08-19 | 1984-02-22 | トヨタ自動車株式会社 | Internal combustion engine fuel injection system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035111U (en) * | 1973-07-25 | 1975-04-14 |
-
1980
- 1980-04-08 JP JP4520280A patent/JPS56142049A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035111U (en) * | 1973-07-25 | 1975-04-14 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH051504U (en) * | 1991-06-28 | 1993-01-14 | 株式会社石川製作所 | Caster wheels |
JP2006219022A (en) * | 2005-02-10 | 2006-08-24 | Nippon Rubber Kagaku Kk | Elastic conductive wheel and its manufacturing method |
WO2014106908A1 (en) * | 2013-01-07 | 2014-07-10 | 株式会社ゼロワンデザイン | Wheel for bag |
Also Published As
Publication number | Publication date |
---|---|
JPS5757267B2 (en) | 1982-12-03 |
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