| 摘要 |
In a foam molding method useful in efficiently manufacturing a foam molding with high surface accuracy and a mold suitable therefor, a plurality of gas-blowing devices 24 including the following members are arranged in the bottom of a cavity 23 present in a lower die 22: valve boxes 25, gas channels 26, valve elements 27, gas flow-restricting valves 28, and other members. The gas channels 26 of the gas-blowing devices 24 are supplied with gas from a common air pump. The valve elements 27 move vertically such that openings of the gas channels 26 that arranged in the cavity are opened or closed. When the gas is supplied to the gas channels 26, the valve elements 27 are moved upward by the pressure of the gas so as to push a molding 34. The valves 28 move upward together with the valve elements 27 and then sit on valve seat sections 31 disposed in the gas channels 26 to restrict the gas to flow into the gas channels 26. The valves 28 have vent holes 32; hence, the gas is allowed to flow into the gas channels 26 although the amount of the glowing gas is small.
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