To provide a resin raw material supply device for a synthetic resin molding machine capable of removing the gas generated in the casing of a heating cylinder at the time of a metering process to efficiently manufacture a synthetic resin molded product without causing the quality defectiveness in the product due to the molding machine.
In the resin raw material supply device installed at the raw material charging port 70 of the heating cylinder 71 of the synthetic resin molding machine comprising a screw 71a and the casing 71b, a raw material charging inner cylindrical part 5 and an exhaust outer cylindrical part 6, which is provided with a gas suction port 61, surrounding the inner cylindrical part 5 are connected to the raw material charging port 70 and a damper 42 is provided to the inner cylindrical part 5 while an atmosphere opening valve 53 for allowing air to flow in the heating cylinder 71 from the outside of the supply device through the inner cylindrical part 5 is provided between the damper 42 and the inner cylindrical part 5. A control means 9 for receiving a predetermined control signal to control the atmosphere opening valve 53 so as to automatically open the same is provided.
HANAOKA KAZUNARI
TAKINO YOSHINOBU
OKUDA TAKAYUKI
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