| 摘要 |
PROBLEM TO BE SOLVED: To provide an undercut processing mechanism which satisfies a requirement for space saving by constructing it compact, can be assembled without labor and time since the structure is simple, and achieves cost reduction, and particularly enables a molded article, having an undercut portion along the whole circumferential directions on the outer circumferential side surrounding an inner hole of the molded article, to be easily removed from a mold. SOLUTION: Slide members 30 respectively supporting a pair of undercut-forming cores 35 and 35 surrounding a core 50 from the whole circumference are housed in a holder 40 mounted in a movable mold 13. Each slide member 30 is slidable between the molding position where the undercut-forming cores 35 contact each other surrounding the core 50 and the mold removal position where the undercut-forming cores 35 separate from each other. In a holder 40, an oblique groove 45 is mounted to guide the respective slide members 30 from the molding position toward the mold removal position along an oblique direction enabling simultaneous movement of each slide member in the mold removal direction and an escape direction when the molded product P is removed from the mold. COPYRIGHT: (C)2010,JPO&INPIT |
