Thermal valve gated injection molding apparatus with melt distribution plate

Injection molding thermal gated apparatus to coinject pressurized melt received from first and second melt sources to a plurality of cavities, said apparatus comprising a plurality of heated nozzles, each nozzle being in association with a corresponding one of said plurality of cavities, each heated nozzle being mounted between a forward face of a common manifold and an adjacent heated cavity forming insert, each adjacent cavity forming insert having a central gate leading to one of the cavities, a first melt passage connected to the first melt source, said first melt passage branching in the manifold to extend through a central melt bore in each nozzle and the adjacent cavity forming insert to the gate in the adjacent cavity forming insert, a second melt passage connected to the second melt source, said second melt passage branching in the manifold to extend through four melt channels in each nozzle and a melt funnel duct in the adjacent cavity forming insert, the four melt channels in each nozzle extending parallel to and radially spaced around the central melt bore, the melt funnel duct in the adjacent cavity forming insert extending around the central melt bore and tapering inwardly to join the central melt bore adjacent the gate, a melt distribution plate mounted between each nozzle and the common manifold, the distribution plate having a rear face which abuts against the forward face of the manifold and a forward face which abuts against a rear face of the nozzle, the melt distribution plate having a central bore extending therethrough from the first melt passage in the manifold to the central melt bore in the nozzle, the melt distribution plate having two holes spaced around the central bore which extend therethrough from the rear face to the forward face, the rear face of the distribution plate and the forward face of the manifold having matching curved grooves which form a melt conduit which branches from the second melt passage in the manifold to the two spaced holes extending through the distribution plate, the forward face of the distribution plate and the rear face of the nozzles each having two curved matching grooves which form two melt conduits, each of said melt conduits branching from one of the holes through the distribution plate to two of the melt channels in each nozzle.