CONTROL METHOD OF MOLDING BASED ON INJECTION MOLD

摘要

PURPOSE:To fill the inside of a mold cavity with a fixed quantity of molten resin always, by suspending an injection action at the time of arrival of a filling quantity of molten resin into the mold cavity at the most suitable quantity. CONSTITUTION:Electrification of a heating element 10 is started at the time of starting of an advance of a screw 2 and a gate 8 of a mold 4 is opened. Molten resin is injected through an injection cylinder 1 by advancing the screw 2 and streamed into a mold cavity 5. When the screw 2 arrives at a reference position preset on a setting device 15, the inside of the mold cavity is filled with the most suitable quantity of the molten resin. A screw position signal detected by a detector 13 is led to a comparator 14. Control equipment 11 of the heating element 10 suspends the electrification of the heating element 10 by receiving a signal of the comparator 14 and the gate 8 is closed. Thus the inside of the cavity 5 is filled with the fixed quantity of the molten resin.