Fanuc Corporation

Yonbon Ban

Susumu Ito

A nozzle touch mechanism for an injection molding machine capable of preventing inclination of a mold and a platen caused by a nozzle touch force, and carrying out maintenance and inspection of the injection mechanism with ease. A connection member is fixed to the stationary platen at opposite positions with respect to a nozzle touch position. One end of a ball-screw shaft of a ball screw mechanism is attached to the connection member rotatably. An injection mechanism is moved with an extruder bed by the ball-screw mechanism driven by a motor through a spring towards the stationary mold attached to the stationary platen, so that a nozzle of the injection mechanism touches a spool of the stationary mold. A nozzle touch force exerted on the stationary mold is transmitted to the connection member and balanced with a pulling force of the connection member transmitted from the ball-screw shaft. A moment is produced on the connection member but no moment is produced on the stationary platen. Thus, the stationary platen and the stationary mold are not inclined. The injection mechanism can be swivel about a swivel pin since the ball screw mechanism is not arranged on the side of the injection mechanism.

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Seoul, South Korea

Yonbon Ban