| 摘要 |
PURPOSE:To cut off reliably a molded product and resin solidified respectively within a cavity and sprue, by making a runner plate in a specific structure where the runner plate is contactable and separable to the cavity and cavity plate. CONSTITUTION:A runner plate 30 is freely separably provided on a cavity 22 and cavity plate 26. Even if a mold break action is started under a state where resin is neither cooled nor solidified completely within secondary sprues 36a, 36b, the runner plate 30 is finestly moved so as to separate from the cavity plate 26 and cavity 22th. Therefore, the resin within a cavity 40 and the resin within the secondary sprues 36a, 36 are cut off reliably at a pin gate 38. Reliable cutting-off becomes possible according to a movement of the whole runner plate 30. |
