Motor driven pump , the output hydraulic oil tanks withholding push the plunger forward motion of the plunger , the two front head on the inner cone sleeve has a radially symmetrical push tapered die holder contraction of the implementation module hose withhold . When the contraction reached the scale setting value , withholding stops automatically change back solenoid valve , hydraulic oil into the mold of two cylinders , push the plunger withhold reverse movement , mold base module driven by the recovery in the spring .

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