| 摘要 |
PROBLEM TO BE SOLVED: To take a rapid measures to a case requiring the max. flow rate, improve the accuracy of pressure control in a small flow rate, and reduce piping cost by arranging control valves having the same capacity as the steam pipings branched to be connected to female and male molds. SOLUTION: A piping structure is constituted of a foam molding mold having a steam chamber 2, a steam piping 3 connected to the mold 1, a pressure detector 4 for detecting the pressure in the mold 1, a control valve 5 arranged at the steam piping 3 and a changeover valve 6. In this case, the steam piping 3 is branched to be connected to the mold 1 and control valves 5a, 5b... are arranged at the respective branched steam pipings 3a, 3b,... and changeover valves 6a, 6b... are constituted so as to open and close the branched steam pipings 3a, 3b... through contact valves 5a, 5b... or directly. |
