| 摘要 |
PROBLEM TO BE SOLVED: To provide an attaching/detaching structure for core pin where the exchange of a core pin fractured from a root part is facilitated, and to provide a die casting mold. SOLUTION: The upper edge part 5a of the shaft hole 5 in a core pin 1 is elongated to a molding part 2. In this way, when the core pin 1 is fractured at the boundary part 4 between the molding part 2 and the base part 3, a hexagonal hole 12 at the upper edge part 5a of the shaft hole 5 is exposed to the fractured face 6 of the core pin 1. By connecting a hexagonal wrench to the hexagonal hole 12, the core pin 1 remaining in the engagement hole 9 of an insert 7 can be easily removed from the insert 7. COPYRIGHT: (C)2010,JPO&INPIT
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