JPS5637138A - Method and apparatus for molding synthetic resin molded article having undercut portion - Google Patents
Method and apparatus for molding synthetic resin molded article having undercut portionInfo
- Publication number
- JPS5637138A JPS5637138A JP11335579A JP11335579A JPS5637138A JP S5637138 A JPS5637138 A JP S5637138A JP 11335579 A JP11335579 A JP 11335579A JP 11335579 A JP11335579 A JP 11335579A JP S5637138 A JPS5637138 A JP S5637138A
- Authority
- JP
- Japan
- Prior art keywords
- molds
- molded article
- synthetic resin
- resin molded
- undercut portion
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4407—Removing or ejecting moulded articles for undercut articles by flexible movement of undercut portions of the articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
PURPOSE:To remove a molded article having undercut portions readily from molds by spreading away the undercut portions using sliding bodies. CONSTITUTION:A melted resin is injected into a cavity 19 defined by telescopic molds 12a, 11a, and is solidified, and thereafter the molds are opened. At the time of the mold opening or after the mold opening, sliding bodies 18 are moved away from one another to spread outwardly the undercut portions S' of the product S by hooks 18b on edges of the sliding bodies 18, and at the same time a pushing pin 23 is actuated to remove the product S from the molds.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11335579A JPS591587B2 (en) | 1979-09-04 | 1979-09-04 | Molding equipment for synthetic resin molded products with undercuts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11335579A JPS591587B2 (en) | 1979-09-04 | 1979-09-04 | Molding equipment for synthetic resin molded products with undercuts |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5637138A true JPS5637138A (en) | 1981-04-10 |
JPS591587B2 JPS591587B2 (en) | 1984-01-12 |
Family
ID=14610163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11335579A Expired JPS591587B2 (en) | 1979-09-04 | 1979-09-04 | Molding equipment for synthetic resin molded products with undercuts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS591587B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6021212A (en) * | 1983-07-16 | 1985-02-02 | Shozo Miura | Manufacture of hanger having hook part |
JPS6021211A (en) * | 1983-07-16 | 1985-02-02 | Shozo Miura | Manufacture of hanger having hook part |
US4777004A (en) * | 1985-10-09 | 1988-10-11 | Galer Herbert W | Apparatus and method for molding plastic paint cans |
JP2006123204A (en) * | 2004-10-26 | 2006-05-18 | Kasai Kogyo Co Ltd | Molding method of resin molded product and mold |
JP2012061730A (en) * | 2010-09-16 | 2012-03-29 | Shimada Precision Kk | Injection mold |
WO2013031789A1 (en) * | 2011-08-29 | 2013-03-07 | 帝人株式会社 | Production method for composite molded body having undercut section |
JP2018203229A (en) * | 2017-06-01 | 2018-12-27 | ザ・ボーイング・カンパニーThe Boeing Company | Closed-angle composite airfoil spar and method of fabricating the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS628088U (en) * | 1985-07-02 | 1987-01-19 |
-
1979
- 1979-09-04 JP JP11335579A patent/JPS591587B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6021212A (en) * | 1983-07-16 | 1985-02-02 | Shozo Miura | Manufacture of hanger having hook part |
JPS6021211A (en) * | 1983-07-16 | 1985-02-02 | Shozo Miura | Manufacture of hanger having hook part |
JPH0454568B2 (en) * | 1983-07-16 | 1992-08-31 | Shozo Miura | |
JPH0454569B2 (en) * | 1983-07-16 | 1992-08-31 | Shozo Miura | |
US4777004A (en) * | 1985-10-09 | 1988-10-11 | Galer Herbert W | Apparatus and method for molding plastic paint cans |
JP2006123204A (en) * | 2004-10-26 | 2006-05-18 | Kasai Kogyo Co Ltd | Molding method of resin molded product and mold |
JP2012061730A (en) * | 2010-09-16 | 2012-03-29 | Shimada Precision Kk | Injection mold |
WO2013031789A1 (en) * | 2011-08-29 | 2013-03-07 | 帝人株式会社 | Production method for composite molded body having undercut section |
JP2018203229A (en) * | 2017-06-01 | 2018-12-27 | ザ・ボーイング・カンパニーThe Boeing Company | Closed-angle composite airfoil spar and method of fabricating the same |
Also Published As
Publication number | Publication date |
---|---|
JPS591587B2 (en) | 1984-01-12 |
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