| 摘要 |
PROBLEM TO BE SOLVED: To surely judge generation of defective molding when the defective molding is generated. SOLUTION: A plurality of resin feeding systems for filling a resin injected from an injection nozzle into a plurality of cavity spaces, filling pressure detecting means for respectively detecting filling pressures of the resin filled in each of the cavity spaces and a control part for judging generation of defective molding when pressure difference between at least two filling pressures among detected filling pressures exceeds a set pressure for superintendence are provided. When the filling pressure in one cavity space is high, even when filling pressures in other cavity spaces are normal and hydraulic pressure in the injection cylinder does not reach a threshold value, the generation of the defective molding can be surely judged.
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