| 摘要 |
PURPOSE:To obtain a molding device for a hydraulic material in which air sufficient for feeding squeezed water can be introduced at the time of sucking and dewatering and a sufficient sealing effect can be obtained when a molded piece is sucked to an upper mold by a mold of a simple structure. CONSTITUTION:A suction groove 10 provided in an upper mold 1 crossing a packing groove 8 is connected to an opening. As a packing 9, a flexible packing of a hollow structure having an internal space is used. The pressure of the internal space of the packing 9 is reduced by a second vacuum suction device 12, whereby the cross sectional area of the packing is reduced, a sealing effect is reduced, and outside air is introduced to feed squeezed water. When the internal space of the packing 9 is released to atmosphere, the cross section is increased, a sealing effect is enhanced, and a molded piece is sucked to the upper mold 1. |
