MOLD FOR RESIN INJECTION MOLDING

摘要

PROBLEM TO BE SOLVED: To quickly perform heating and cooling in a mold for resin injection molding.

SOLUTION: The mold 1 for resin injection molding comprises a cavity mold 2 and a core mold 3 and is produced on a base plate 31 by metal photofabrication. The cavity mold 2 includes a cavity warm water circuit 23 for allowing warm water for cooling to flow and a cavity cold water circuit 24 for allowing cold water for cooling to flow. The core mold 3 is also provided with a core warm water circuit 33 and a core cold water circuit 34. The core mold 3 comprises an air blowing passage 35 for feeding warm air or cold air into a resin molding part 11 and a suction passage 36 for sucking a gas within the resin molding part 11. The resin molding part 11 side of the air blowing passage 35 and the suction passage 36 is formed of a low-density shaping part 32b that has a low metallic powder sintered density and is permeable to gas. Warm air or cold air can be blown through the low-density shaping part 32b, whereby the rapid heating or cooling of the resin injection mold 1 can be achieved.

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