MOLD FOR INJECTION COMPRESSION MOLDING

PROBLEM TO BE SOLVED: To provide a mold for injection compression molding in which while a mechanism peculiar to injection compression molding is effectively utilized, a gate trace resin can be easily removed without obstruction of flowability of a molten resin.SOLUTION: A mold for injection compres...

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Bibliographische Detailangaben
Hauptverfasser: KONDO KEITA, IWAYA TAKAHIRO, NISHIKAWA SHUJI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a mold for injection compression molding in which while a mechanism peculiar to injection compression molding is effectively utilized, a gate trace resin can be easily removed without obstruction of flowability of a molten resin.SOLUTION: A mold for injection compression molding is that in a half fastening condition of a stationary mold 10 and a movable mold 11, a molten resin is injected to a cavity 14, then perfect fastening is performed, and while compressive force is acted to a molten resin, cooling solidification is performed. The mold for injection compression molding includes: a float 20 in which slide displacement is performed accompanying with slide move of the movable mold 11; a notch pin 21 that is disposed at a position that faces a gate part 15, and is driven by displacement of the float 20 to be retractable from the stationary mold 10; and a slide core 22 that allows the notch pin 21 to be driven by displacement of the float 20. In a half fastening condition, an end of the notch pin 21 becomes flush with an inner face of the gate part 15, the notch pin 21 projects from the stationary mold 10 in a compression process in which mold closing is performed to a perfect fastening condition, thereby a shape in which the gate part 15 can be easily cleared is formed.