Patent ID: 6533571
Filing Date: 2003-03-18
Classification: B29C

Abstract:
An injection molding system having a fluid source in communication with at least one injection molding nozzle assembly inserted in a mold plate, said injection molding nozzle assembly comprising;a nozzle bushing having a first melt channel formed therein, said first melt channel in fluid communication with said fluid source, a nozzle tip having a second melt channel formed therein, said second melt channel in fluid communication with said first melt channel and a mold gate, a nozzle tip insulator assembly affixed adjacent said mold gate to said nozzle tip, said nozzle tip insulator assembly in sealing abutment with a gate wall and comprising; an inner sleeve in thermal communication with said nozzle tip, an outer sleeve affixed to said inner sleeve by a joining means located between said inner and outer sleeve, a shoulder protruding from said inner sleeve to restrain the movement of said outer sleeve, said shoulder located on said inner sleeve to direct a portion of loads applied to said outer sleeve into said nozzle tip thereby reducing tensile loads in said inner sleeve.