Apparatus for injection molding of plastic material

摘要

An apparatus for injection molding of plastic materials includes an injection machine platen, a mold including a backing plate for securing the mold to the injection machine platen, a distributor of the plastic material to be injected adjacent to the backing plate and bearing at least one injector including a nozzle within which a pin valve is axially movable, and a respective electric actuator with associated transmission to operate the displacement of the pin valve between a closed position and an open position. The transmission includes a variable-length connecting rod.

主权项

1. An apparatus for injection molding of plastic materials including an injection machine platen, a mold comprising a backing plate for securing the mold to the injection machine platen, a distributor of the plastic material to be injected, bearing a plurality of injectors with each injector of the plurality of injectors including a nozzle within which a pin valve is axially movable, and a respective electric actuator and associated transmission to operate displacement of the pin valve between a closed condition and an open condition to enable fluid plastic material under pressure to flow from the distributor to a cavity of the mold, wherein each transmission includes a connecting rod and the connecting rod has a variable length so as to accommodate different distances between each pin valve and its respective electric actuator, and wherein the plurality of injectors are operable independently of each other.