| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding die equipped with a shut-off mechanism which is applicable to an undersize injection molding machine. SOLUTION: This injection molding die has gate members 51a and 51b which form a part of the inner wall surface of a die cavity 11 to be injection-filled with a resin material and can advance/recede along the inner wall surface of the cavity 11. In addition, the gate members 51a and 51b are pressed by an injection nozzle 4 which injects the resin material to a nozzle touching part 21 to be formed in the injection molding die 1. Consequently, the gate members 51a and 51b recede to form a route 55 for the resin material to guide the resin material to the cavity 11 and advance by a press spring 53 to close the cavity 11 upon the removal of the injection nozzle 4 from the nozzle touching part 21. COPYRIGHT: (C)2006,JPO&NCIPI
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