RAW MATERIAL SUPPLY CONTROL SYSTEM FOR INJECTION MOLDING MACHINE AND RAW MATERIAL SUPPLY CONTROL METHOD FOR INJECTION MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To prevent poor melting of raw materials and to suppress overheating of raw materials due to remaining and residing of raw materials.;SOLUTION: A raw material supply control system 10 for an injection molding machine 11 for plasticizing raw material supplied into a plasticizing cylinder 12 by rotation of a main screw 13 in the plasticizing cylinder 12 and storing it in a molten state in a storage part 20 and injecting it, has a raw material supply feeder 14 for feeding raw material into the plasticizing cylinder 12 in such a manner that a supply amount thereof can be changed, a retracted position detection sensor 15 that detects a retracted position of the main screw 13 that moves rearward by a pressure of the raw material in a molten state stored in the storage part 20 of the plasticizing cylinder 12, and a control device 16 for controlling the raw material supply feeder 14 so as to change a supply amount of the raw material supplied from the raw material supply feeder 14 into the plasticizing cylinder 12 on the basis of a retracted position of the main screw 13 detected by the retracted position detection sensor 15.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT