Patent ID: 6056536
Filing Date: 2000-05-02
Classification: B29C

Abstract:
A valve gating apparatus for a hot runner injection molding assembly having at least one injection molding nozzle mounted in a manifold plate and including a melt channel and a nozzle gate, said valve gating apparatus being positioned between the nozzle gate and a mold cavity, comprising:at least one shutter positioned between said manifold plate and said manifold cavity and movable between a first position wherein said shutter inhibits flow of melt material from said nozzle gate and a second position wherein said nozzle gate is in fluid communication with said mold cavity, said shutter having a body with an aperture therethrough defining a melt flow path and a sealing edge, said aperture receiving a sealing post adjacent said nozzle gate therein, said sealing edge of said shutter abutting said sealing post in said second position to inhibit flow of melt and said sealing edge being distal said sealing post in said first position; and,means to move said shutter substantially perpendicular to the direction of melt flow through said nozzle gate between said first and second positions.