MOLD APPARATUS FOR MOLDING RESIN PART

摘要

PROBLEM TO BE SOLVED: To avoid the leak of the gas charged in a cavity from a gas filling nozzle and to stabilize the shape of a hole sealing cylinder in a mold apparatus equipped with a plurality of molds forming a cavity and a gas filling nozzle for filling the cavity with gas after the injection of a molten resin is completed and molding a resin part having a cavity part formed by filling gas. SOLUTION: A large diameter cylindrical part 20 fitted in the insertion hole 19 provided to a specific mold 9 and a small diameter part 22 forming the stepped part 21 facing to a cavity 7 between both large and small diameter cylindrical parts are provided to a gas filling nozzle 13 and a hole sealing cylinder 24 having an inner surface shape prescribed by the outer surface of the small diameter cylindrical part 22 and the stepped part 21 and an outer surface shape prescribed by the inner surface on the side of the cavity 7 of the insertion hole 19 is formed between the specific mold 9 and the gas filling nozzle 13.