| 摘要 |
PROBLEM TO BE SOLVED: To enable, based on a simple mold structure, the release of a molding having an undercut portion.SOLUTION: In injection molding molds furnished with a pair of molds 2 and 3 capable of invoking mold closing and opening actions and an abutting pin 4b sliding along mold closing and opening directions and extractable from and retractable into the molding surface of one mold 3 and used for injection-molding a molding possessing an undercut portion (hole B5), a slide member 41 is configured on the distal end of the abutting pin 4b, and an undercut molding part for molding the undercut portion of the molding (molding pin 42) is configured on the slide member 41. |
