Perfected machine for modeling injection by plastic and directly on a continuous belt resins, integrating element fasteners, zipper

摘要

Machine improved injection molding, using plastic and directly on a continuous belt resins, the elements of the zipper closures, characterized in that the drive unit of the machine consists of a piston driven hydraulically, which moves with path vaiven horiental, the plunger injects the plastic material, which enters the injection cylinder, from a hopper disposed at the top of the machine, closing the inlet of said material, with synchronized movement with the injection, under a ring secured to the vástado impeller, which, in its forward and backward, drag a slider, conveniently guided, which is provided with two end stops, which distance corresponds to the travel to be performed by the injection plunger before starting the injection, so that a shutter cylinder, integral with the sliding member, close the lower mouth of the hopper s uministradora material.