Method of changing the resin in an injection molding machine usi

Details Method of changing the resin in an injection molding machine usi Method of changing the resin in an injection molding machine usi

1988-05-05

1989-02-28

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

26432811, 425190, 425226, 425574, B29C 4524

Patent

active

048083550

ABSTRACT:
For an injection molding machine a nozzle touch plate is provided which is slidable on a surface of a stationary plate opposite to the surface to which a metal mold is secured. The nozzle touch plate is brought to a position for preventing advancement of an injection nozzle into contact with the metal mold. In this position, the injection nozzle is brought into contact with the nozzle touch plate so that resin remaining in the injection cylinder is purged against the plate at the time of changing the type or color of the resin whereby the resin is prevented from being injected into the metal mold. After purging the nozzle touch plate is retracted to permit injection molding of new resin.

REFERENCES:
patent: 2102328 (1937-12-01), Morin
patent: 4472127 (1984-09-01), Cyriax et al.

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