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Metrical manner before the formation initializing of the injection molding machine and metrical control unit null before the formation initializing of the injection molding
Metrical manner before the formation initializing of the injection molding machine and metrical control unit null before the formation initializing of the injection molding
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机译:注塑成型开始前的计量方式和注塑成型开始前的计量控制单元无效
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摘要
PURPOSE: To prevent the leakage of a molten resin to the outside by intermittently repeating the operation forcibly moving an injection screw in a retreat direction in predetermined timing by predetermined quantity during a period plasticizing and weighing a resin by a preset temporary weighing stroke. CONSTITUTION: The pressure in a resin storage chamber R is forcibly lowered by suck back operation and the leakage of a molten resin to the outside is prevented. When the clocking by a suck back timer is completed, a two-position solenoid changeover valve is returned. By this method, the suck back operation is performed only for a predetermined time in predetermined timing. By intermittently performing this operation, the leakage of the molten resin from the nozzle orifice 34a of a nozzle 34 is prevented. A three-position solenoid changeover valve is changed over when an injection screw 36 retreats by a temporarily set weighing stroke to stop the rotation of a hydraulic motor 12 and a plasticizing and weighing process before molding rising is completed.
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