Control device for electrical operated injection molding machine, has reference value calculating unit computing value obtained from parts of screw retreat amount and screw rotation amount as plasticizing rate reference value

摘要

The device has an injection screw (3) movably arranged in an injection cylinder (1), where the screw is rotatable back and forth. An injection servomotor (M1) rotates and drives the screw, and a position detector (Penc2) detects a screw rotation amount in a preset section. A plastification rates reference value calculating unit computes a value obtained from parts of screw retreat amount detected by a screw retreat amount detecting unit, and the screw rotation amount as a plasticizing rate reference value.