Patent ID: 6416315
Filing Date: 2002-07-09
Classification: B29C,B29L,Y10S

Abstract:
A plastic injection mold comprising:a mold core assembly and a mating mold cavity assembly, the core assembly having a core portion defining the inside surface of a plastic object to be molded in the mold, and the cavity assembly having a cavity wall defining a portion of the outside surface of said object; one of the core and cavity assemblies including a plurality of collets surrounding the core portion, the collets also including means for defining a portion of the outside surface of said object; the core portion, the cavity wall and the collets defining a closed space between the core portion, the cavity wall and collets in the shape of said object; one of the core and cavity assemblies having a sprue for injecting molten plastic into said closed space and an air vent to permit air to escape therefrom; guide means engaging the collets for separating and moving the collets outwardly away from the core portion upon lifting of the collets upwardly away from the core portion; a collet lifting ring surrounding the core portion; means for slidably coupling the collet lifting ring to the collets; and means for lifting the collet lifting ring upwardly away from the core portion, so that upon said lifting of the collet lifting ring, all of the collets are lifted and separated simultaneously.