| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold for injection molding, which enables the molding of a molded article having an under-cut part with a large under-cut amount, without imposing a heavy load on the operation of a slide mold. SOLUTION: This mold 1 for the injection molding is composed of a fixed mold 2 in which a cavity is bored, and a movable mold 6 in which a core mold 3 is protrusively provided toward the fixed mold 2, so as to be used for molding the molded article having the under-cut part 14. The core mold 3 comprises: the slide mold 8 which is slid along a first inclined plane 4 provided in the core mold 3, so as to be moved in a direction perpendicular to the direction of the movement of the movable mold 6; and an insert 9 which is provided inside the slide mold 8, so as to be moved in the direction perpendicular to the direction of the movement of the movable mold 6 along a second inclined plane 5 provided in the core mold 3, along with the sliding of the slide mold 8. COPYRIGHT: (C)2004,JPO
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