Patent ID: 7658606
Filing Date: 2010-02-09
Classification: B29C

Abstract:
1. An injection molding apparatus comprising: an injection manifold having an inlet and a melt channel, wherein said melt channel branches to a plurality of melt channel outlets; a hot runner injection nozzle having an axial melt channel extending along a central axis and communicating with one of the melt channel outlets, the hot runner injection nozzle also including at least two angled melt channels disposed at an angle with respect to the central axis such that the angled melt channels and the axial melt channel are not parallel to each other; at least two nozzle tips each including a nozzle tip melt channel, wherein the nozzle tip melt channel is in communication with one of the angled melt channels; a primary valve pin disposed at least partially within the axial melt channel coaxially with the central axis and movable within the axial melt channel; at least two secondary valve pins movable inside the nozzle tip melt channels, wherein the secondary valve pins are disposed at an angle with respect to the primary valve pin such that the secondary valve pins are not parallel to the primary valve pin; a linkage element connecting the secondary valve pins to the primary valve pin; and at least two lateral mold gates disposed at an angle with respect to the central axis such that the mold gates are not parallel to the central axis, each mold gate communicating with a mold cavity, wherein the axial movement of the primary valve pin is transmitted through the linkage element to the secondary valve pins to open and close communication between the nozzle tip melt channels and the lateral mold gates.