| 摘要 |
PURPOSE:To eliminate the necessity of a molding machine having high injection pressure even in case of a molded piece having a relatively complicate shape and a large size, and to obviate a defect such as air voids, pinholes or the like in a molded product by providing a plurality of gates communicating with the air gap of a sealed molding die according to the injection amount of mixed resin and the shape of the air gap, and simultaneously injecting the resin from the machine into the air gap through a distributor. CONSTITUTION:A reinforcing material such as glass fiber is filled in advance in air gaps 5 formed between an outer mold made of upper and lower molds 2, 3 and a telescopic mold 4. When the valve of a distributor 11 is opened in this state and mixed resin in which thermosetting liquid resin is mixed with a curing agent is fed from an injection machine 13 to the distributor 11, the resin is supplied from nozzles 8,... through pipes 9,... and gates 6,... into the gaps 4. The portions of air in the gaps 5 are discharged through air vent holes 7,... to the exterior by supplying the resin into the gaps 5. The supply of the resin is stopped in a state that the resin is filled in the gaps 5, the molds 2, 3 are removed in a state that the resin is solidified by reaction curing, thereby completing an FRP molded piece. |
