| 摘要 |
PROBLEM TO BE SOLVED: To provide a runner lock pin set to an injection molding die capable of suppressing flow resistance and unnecessary resin in a runner section to minimum to make it difficult to leave the resin in an under-cut section, improving productivity and easily adjusting a runner lock force. SOLUTION: The cross section along the axis of the under-cut section 14 is formed symmetrically to the axis 15, and the area of the cross section seen toward the axis 15 from desired different points on the outer periphery of the under-cut section 14 is formed to have mutually different sections. COPYRIGHT: (C)2008,JPO&INPIT
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