| 摘要 |
PURPOSE:To prevent flashes from sticking and to contrive to improve yield by a method wherein the die for a part of a cavity is slided, material is injected when the cavity part is communicated with a material injecting gate and then the dies are returned and moved to close the cavity and harden the material thermally. CONSTITUTION:Both the upper and the lower external die 14, 15 are moved in the upward direction along the axis relatively to both upper and lower interval 12, 13. The molding material injecting gate 17 formed in the upper internal die 12, the cavity part of both external dies 14, 15 and the cavity of both internal dies 12, 13 are communicated. In this state fluid molding material is forced by the injecting nozzle 18 etc. from the injecting gate 17 fully into the cavity 16. Then, these external dies 14, 15 are returned and moved in relation to the internal dies 12, 13 to agree the shape of the cavity 16 to that of the product and the molding die 11 is heated to harden the molding material. The upper internal die 12 and the lower external die 14 are separated and taken out vertically from the lower internal die 13 and the lower external die 15. |
