| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding mold capable of sufficiently filling a resin into a cavity and especially capable of firmly forming a bottom part of a cylindrical molded article. SOLUTION: The injection mold 1 for making the cylindrical molded article 35 having the bottom part 35a is equipped with a cavity 17 for forming an outer peripheral wall of the molded article, a core pin 16 for forming an inner peripheral wall of the molded article and an inner wall of the bottom part, and bottom part outer wall-forming parts 12, 37 for forming the bottom part outer wall of the molded article. When the bottom part outer wall-forming parts 12, 37 are made to abut against the core pin 16, a clearance 12a is provided between the bottom part outer wall-forming parts 12, 37 and the core pin 16. COPYRIGHT: (C)2004,JPO
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