INJECTION MOLDING TOOL, BOX-SHAPE MOLDED PRODUCT, AND METHOD FOR MANUFACTURING BOX-SHAPE MOLDED PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide an injection-molding tool which ensures secure filling of a molten resin in every corner even in thin wall parts.;SOLUTION: In a cavity side half of a molding tool, a gate 13 is arranged at the corners of the surface of a top plate 31 for a box-shape molded product to a cavity 3, that is, at the four corners of the face side of the top plate 31. Further, the center position of a circle is arranged so that it becomes a position Q where the inner wall faces 33 of the side walls 32 cross each other to the product gate 3. In addition, a recessed part is formed in the lower face of the cavity side half of a framework for this half of the molding tool, and a projecting part is arranged on the upper face of a movable half of a framework for this half.;COPYRIGHT: (C)2003,JPO