Husky Injection Molding Systems Limited

Klaus B Fritzsche

Herbert Rees

An apparatus for purging an injection molding machine utilizing a three stage or three position nozzle assembly.

Automatic shut off nozzle for plastic extruder

One of two relatively movable platens of an injection-molding machine carries a housing in which a cylindrical cam with a generally helicoidal groove is rotatably lodged, the cam being rigid with a shaft disposed parallel to the direction of platen motion. A cam follower on the inner surface of that housing engages in the helicoidal groove whereby the shaft is rotated during relative reciprocation of the platens; a hub idling on the opposite shaft end, supported by a control box on the other platen, can be positively coupled to the shaft by a clutch in this box so as to rotate therewith. An elbow coupled with that hub, directly or through a carriage having a rack in mesh with a gear fixed to the hub, supports a pick-up head which in the engaged state of the clutch enters between two separated mold portions respectively carried by the platens for extracting a freshly molded workpiece from the mold or, possibly, placing an externally supplied insert in an empty mold cavity.

Growing community of inventors

Aurora, Canada

Klaus B Fritzsche