| 摘要 |
PURPOSE: Inside of a mold is vacuumized before injecting raw material through a foaming forming machine to prevent vapor or distortion, thereby reducing manufacturing cost and improving working efficiency. CONSTITUTION: In a mold of foaming resin forming to form shoe pads or cushion pads, the mold comprises an upper mold(90) and a lower mold(100). A hollow chamber(120) is formed by combining the upper mold and the lower mold. A penetrating hole(80) is formed in the upper mold to communicate the hollow chamber with outside. A valve(20) is installed in outer surface of the upper mold to open or close the penetrating hole. The valve is an hydraulic valve.
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