| 摘要 |
PURPOSE:To solve problems of index of double refraction and stress gradient without complicating structure and mold control. CONSTITUTION:After filling of a melt resin P, a cut pin 34 advances under a melted state, the tip of the cut pin 34 enters a housing hole, and a gate 35 is sheared. The compression force to be generated at the gate 35 is transmitted to a cavity 15 and a sprue bush 14 uniformly, thereby stress gradient does not occur. |
