| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection mold capable of molding a resin product without wasting a manufacturing time and damaging or deforming the resin product even if a recessed part is formed in the slide region of a core for molding an undercut part. SOLUTION: A cavity 5 has an undercut part molded using an inclined core 3 and a recessed part depressed toward a direction getting away from the undercut part in a mold on-off direction within the slide region of the inclined core 3 formed by the locus of the advance and retreat operation of the inclined core 3. A recessed part forming core 4 for forming the recessed part operated so as to advance and retreat in the mold on-off direction is provided, and the inclined core 3 and the recessed part forming core 4 are superposed one upon another in such a state that a part of the inclined core 3 is in contact with the bottom surface of the recessed part forming core 4. The inclined core 3 is operated so as to advance in the direction separated from the undercut part in connection with the advance movement of the recessed part forming core 4 in the mold on-off direction.
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