| 摘要 |
PROBLEM TO BE SOLVED: To enable to regulate freely the generating position of a weld line generated in a see-through hole part in a mold for injection molding having a see-through hole. SOLUTION: In the mold for injection molding which injection molds a molding having the see-through hole, the see-through part and one mold part touched to the see-through hole and its outer periphery is a rotatable cylindrical shape insert structure, and a projection for thickness reducing is projected in a deviated position at one periphery of the see-through hole of the front surface of the insert. Here, the projection is formed as a comma-shaped bead shape formed on the concentric circle of the above see-through hole. Further, the length of the projection in the circumference direction is made less than 1/2 of the circumference. Moreover, when the above see-through hole approaches the above molding and a plurality exist, it is also possible to provide a parent insert which contains collectively the cylindrical nest provided for every see-through hole. Further, a securing means which positions the rotating direction of the above cylindrical insert is provided between the above one cylindrical nest and the one mold and the parent nest. COPYRIGHT: (C)2007,JPO&INPIT
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