Patent ID: 7370417
Filing Date: 2008-05-13
Classification: B29C,Y10T

Abstract:
1. A method of installing a mold gate insert in an injection molding apparatus comprising the steps of: providing an injection manifold having a manifold melt channel; providing a mold plate having a mold bore; providing a hot runner nozzle located in the mold bore, said nozzle having a nozzle melt channel; providing a mold gate insert including a melt channel; holding the mold gate insert such that an upper end thereof contacts a shoulder of the nozzle; providing a mold gate insert retainer around a portion the mold gate insert; rotating the mold gate insert retainer relative to the mold gate insert such that the mold gate insert is not rotated relative to the nozzle and threads on an outer surface of the mold gate insert retainer engage with threads on an inner surface of the nozzle, wherein said mold gate insert retainer is rotated until an upper portion of the mold gate insert retainer abuts against a shoulder of the mold gate insert so as to retain the mold gate insert against the shoulder of the nozzle; and bringing the mold plate into sealing contact with an outer surface of a lower portion of the mold gate insert such that a lower surface of the mold gate insert forms a wall of a mold cavity, wherein the lower surface of the mold gate insert is disposed at an angle other than 90 degrees with respect to a central axis of the melt channel of the mold gate insert.