INJECTION MOLD AND METHOD FOR MANUFACTURING INJECTION- MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide an injection mold capable of suppressing the generation of a weld line to accurately mold a molded article and a method for manufacturing an injection-molded article. SOLUTION: A gate spool 5 is arranged on the same axis as the collumnar core member 4 provided in a cavity 3 and a disk part 6 of which the maximum outer diameter is set largish as compared with the diameter of the core material 4 is interposed between the gate spool 5 and the cavity 3 and the maximum outer diameter part of the disk part 6 or the vicinity 6a thereof is allowed to communicate with the cavity 3 in an annular state along the surface parallel to a parting surface to form a gate. The ejection member 7 sliding in the core member 4 is provided on the same axis as the core member 4 and the gate tab 8 formed in the disk part 6 is cut off from the molded article formed in the cavity 3 by the ejection operation of the ejection member 7 cooperating with mold opening operation.