Patent ID: 8449287
Filing Date: 2013-05-28
Classification: B29C

Abstract:
1. An injection molding system comprising: a hot runner manifold having a melt channel for receiving a melt stream of moldable material from a melt source; a hot runner nozzle having a melt channel for receiving the melt stream from the manifold melt channel and delivering the melt stream to a mold cavity via a mold gate; and a valve pin having a shaft that extends from an actuation mechanism through at least a portion of the manifold melt channel and the nozzle melt channel such that a forward end of the valve pin is seatable within the mold gate, the valve pin shaft having a rearward segment disposed between the manifold melt channel and the actuation mechanism that is configured to accommodate shifting between the manifold and the actuation mechanism that occurs under operating conditions.