| 摘要 |
PURPOSE:To constantly uniformize the projected amount of a core from a mouth piece even with a irregularity in core length by a method wherein the upper end part of the core is fitted into a fitting hole of a drawing fittings, the lower end of a core presser abuts on the upper end of the core to press the core downward, and a molded port of the drawing fittings peripherally abuts on the upper end of the mouth piece. CONSTITUTION:By moving a drawing fittings 27 downward by a pressurizer 38, the upper end part of a core 22 projected upwards from a mouth piece 20 is fitted into a fitting hole 28 of the drawing fittings 27, and the lower end of a core presser 34 abuts on the upper end of said core 22 to press down said core 22 against the reaction force of a support mechanism 23. Thereafter, a molded port 29 of the drawing fittings 27 peripherally abuts on the upper end part of the mouth piece 20 to draw this part axially for processing. In this manner, the upper end part of the mouth piece 20 clamps the upper end part of the core 22. |
