| 摘要 |
PROBLEM TO BE SOLVED: To prevent the resin in a cavity from flowing backward from a resin injection port to leak to the outside of a mold. SOLUTION: 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. COPYRIGHT: (C)2005,JPO&NCIPI
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