Patent ID: 6162043
Filing Date: 2000-12-19
Classification: B29C

Abstract:
In an injection molding apparatus having a heated melt distribution manifold (16) and a plurality of nozzles (10) mounted in a mold (12), each nozzle (10) having a threaded rear end (46) and a melt bore (102) extending therethrough to convey melt to a gate (18) leading to a cavity (20), the melt distribution manifold (16) having a front face (56) and a melt passage (14) extending therethrough, the melt passage (14) having a plurality of branches (96) extending outwardly from a common inlet portion (94) to an outlet (98) on the front face (56) of the melt distribution manifold (16) aligned with the melt bore (102) extending through one of the nozzles (10), the improvement comprising:each nozzle (10) extending from a mounting base (50) having a rear end (54) secured against the front face of the melt distribution manifold (16), each mounting base (50) having a frontwardly open threaded seat (48) and a melt bore (100) extending rearwardly therethrough from the threaded seat (48) to the rear end (54), the rear end (46) of each nozzle (10) being screwed into the threaded seat (48) of one of the mounting bases (50) with the melt bore (100) through the mounting base (50) extending from one of the outlets (98) of the melt passage (14) to the aligned melt bore (102)extending through said nozzle (10).