INJECTION MOLDING MOLD

Japanese Patent JP2005178131

A

To prevent the resin in a cavity from flowing backward from a resin injection port to leak to the outside of a mold.

In this injection molding mold constituted so that a plurality of resin injection ports 7 communicating with the cavity 5 formed by a fixed mold 1 and a movable mold 2 are provided to the fixed mold 1 side by side and a molten resin is successively injected in the cavity 5 from an injection nozzle through the resin injection ports 7, valve mechanisms 8 are individually provided to a plurality of the resin injection ports 7. Each of the valve mechanisms 8 has a nozzle touch surface 9 for receiving the tip of the injection nozzle not only to usually close each of the resin injection ports 7 by the energizing force of an elastomer but also to open the same by the contact of the injection nozzle with the nozzle touch surface 9.

KONDO TOSHIAKI
HAZAMA SHUICHI
HIROHAMA MOTOYUKI
IWASE YASUHIRO

JP2003421012A

July 07, 2005

December 18, 2003

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DAIWA KASEI IND CO LTD

B29C45/28; B29C45/13; B29C45/22; B29C45/26; (IPC1-7): B29C45/28; B29C45/13; B29C45/22; B29C45/26

Hidehiko Okada
Tetsuo Fukuda
Tatsuhiko Inukai
Takashi Ishioka

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