METHOD AND APPARATUS FOR CONTROLLING INJECTION MOLDING MACHINE CAPABLE OF REDUCING VARIATIONS IN WEIGHT OF MOLDED PRODUCTS

摘要

PURPOSE: A control method for controlling an injection molding machine is provided to effectively produce molded products of a uniform weight. CONSTITUTION: A control method suitable for use in an injection molding machine includes a mold internal pressure sensor for measuring a mold internal resin pressure as a measured mold internal pressure value. The measured mold internal pressure value is fed to a nozzle internal resin pressure feedback control system. A nozzle internal pressure preset value in the nozzle internal resin pressure feedback control system is changed in accordance with a difference between the measured mold internal pressure value and an mold internal pressure preset value.