Patent ID: 7252498
Filing Date: 2007-08-07
Classification: B29C

Abstract:
1. An injection molding apparatus comprising: a manifold having a manifold channel for receiving a melt stream of moldable material under pressure; a nozzle having a first nozzle portion and a second nozzle portion provided in series between said manifold and a mold gate, said first nozzle portion and said second nozzle portion having respective nozzle melt channels for delivering the melt stream from said manifold to a mold cavity; a nozzle tip attached to a forward end of said second nozzle portion for delivering the melt stream to the mold cavity; and a telescoping connection provided between said first nozzle portion and said second nozzle portion to allow for a continuous flow of melt therebetween, said telescoping connection including an extended portion integral with one of said first and second nozzle portions that is slidable within the other of said first and second nozzle portions; wherein thermal expansion during operation of said injection molding apparatus is absorbed by said telescoping connection.