NOZZLE TOUCH MECHANISM OF INJECTION MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To simply generate desired nozzle touch force without relying on a spring. SOLUTION: A moving member 13 is joined to the nut 18 threaded with a screw shaft 17 rotated by a motor 11 with a brake being a drive source and the moving member 13 and the bracket 19 extended from an injection device 2 on a slide base 4 are connected in a slidable manner by a connection pin and an electromagnet 20 is fixed to the bracket 19 so as to form a gap with respect to the moving member 13. The moving member 13 is moved integrally along with the nut 18 by the rotation of the screw shaft 17 and the injection device 2 is drawn by the moving member 13 to touch the nozzle 7 of the injection device on a mold 1 and the motor 11 is braked simultaneously with this touch to positionally fix the moving member 13 and the electromagnet 20 is also excited to pull the injection device 2 to the moving member 13 by the attraction force of the electromagnet and predetermined nozzle touch force is generated between the nozzle 7 and the mold 1.