| 摘要 |
PURPOSE:To enhance productivity and to reduce running cost. CONSTITUTION:When a core pin 40 is pulled out after the groove 32 having a circular cross section of a female mold 30 is filled with a molding material, the molding material is pressed by the mold splitting surface 61 of a stripper plate 60 so as not to apply excessive stress to the core pin 40 and the mold splitting surface 61 is washed without allowing the core pin 40 to protrude from the mold splitting surface 61 of the stripper plate 60 when a female mold 30 and a male mold 20 are opened to reduce the breakage of the core pin 40. |
