JPS5490261A - Injection mold - Google Patents
Injection moldInfo
- Publication number
- JPS5490261A JPS5490261A JP15918077A JP15918077A JPS5490261A JP S5490261 A JPS5490261 A JP S5490261A JP 15918077 A JP15918077 A JP 15918077A JP 15918077 A JP15918077 A JP 15918077A JP S5490261 A JPS5490261 A JP S5490261A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- forms
- cylindrical article
- elastomer
- circumference
- 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.)
- Pending
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
PURPOSE: To provide the title mold having simple structure and from which the molded article is easily released, comprising an outer mold which forms the outer surface of a cylindrical article, and an inner mold furnished with an elastic member which forms an undercut of the product.
CONSTITUTION: The injection mold is composed of an outer mold 3 comprising a stationary mold 1 which forms the outer surface of a cylindrical article 4, and a movable mold 2; and an inner mold 5 comprising a base mold 7 which forms the inner surface of the cylindrical article 4 excluding the undercut part, and a sliding mold 9 fitted to the right end of the base mold 7 having reduced diameter 8. A circular groove 20 at the circumference of the left end of the mold 9 is fitted with a circular ridge 19 of an elastic ring 18 made of a synthetic rubber. When the mold is in the opened state, the circumference 21 of the elastomer 18 is on the same plane to the surface 22 of the mold 9; and when it is closed, the elastomer 18 is compressed by the pressure of the inner mold between the vertical face 11 of the sliding mold 8 and the mold 9, and bulges outwardly from the face 22 of the mold 9 to form a semicircular curve, which forms a mold surface 23 for the undercut part.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15918077A JPS5490261A (en) | 1977-12-27 | 1977-12-27 | Injection mold |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15918077A JPS5490261A (en) | 1977-12-27 | 1977-12-27 | Injection mold |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5490261A true JPS5490261A (en) | 1979-07-17 |
Family
ID=15688039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15918077A Pending JPS5490261A (en) | 1977-12-27 | 1977-12-27 | Injection mold |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5490261A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS606415A (en) * | 1983-06-24 | 1985-01-14 | Showa Gomme Kk | Mold apparatus for producing item with constricted section such as teat and the like |
JPS6335311A (en) * | 1986-07-30 | 1988-02-16 | Kubota Kanagata Kosakusho:Kk | Undercut product and its method of molding |
JPH03116912U (en) * | 1990-03-12 | 1991-12-03 | ||
JPH05318571A (en) * | 1992-05-25 | 1993-12-03 | Kodama Kagaku Kogyo Kk | Vacuum molding apparatus of cylindrical molded product having annular protruding part |
JP2009262418A (en) * | 2008-04-25 | 2009-11-12 | Starlite Co Ltd | Mold device |
-
1977
- 1977-12-27 JP JP15918077A patent/JPS5490261A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS606415A (en) * | 1983-06-24 | 1985-01-14 | Showa Gomme Kk | Mold apparatus for producing item with constricted section such as teat and the like |
JPH033568B2 (en) * | 1983-06-24 | 1991-01-18 | Showa Rubber | |
JPS6335311A (en) * | 1986-07-30 | 1988-02-16 | Kubota Kanagata Kosakusho:Kk | Undercut product and its method of molding |
JPH03116912U (en) * | 1990-03-12 | 1991-12-03 | ||
JPH05318571A (en) * | 1992-05-25 | 1993-12-03 | Kodama Kagaku Kogyo Kk | Vacuum molding apparatus of cylindrical molded product having annular protruding part |
JP2009262418A (en) * | 2008-04-25 | 2009-11-12 | Starlite Co Ltd | Mold device |
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