Multi-cavity injection molding heated nozzle.

摘要

An injection molding nozzle (10) having a melt channel (50) with a number of diagonal portions (54) which branch to equally spaced outlets (58) for multi-cavity molding. The nozzle has an integral electrical heating element (86) with a forward portion (100) which extends adjacent the forward face (24) of the nozzle between the spaced outlets (58) of the melt channel. The forward portion (100) of the heating element is integrally brazed in channels (108) in the forward face (24) of the nozzle and has a number of radially extending arms (106). One of the arms (106) extends outward midway between each two adjacent outlets (58). This provides additional heat to the melt near the outlets (58) and ensures it is evenly balanced between the diagonal portions (54) of the melt channel. <IMAGE>