| 摘要 |
<p>An injection molding heated manifold (12) having a melt passage (64) with a longitudinal portion (74) to convey melt from a molding machine to a number of different nozzles (10). The steel manifold (12) has a pair of cooling bores (70,72) extending parallel to and equally spaced on opposite sides of the longitudinal portion (74) of the melt channel (64). A cooling fluid, such as air, flows through the cooling bores (70,72) to quickly cool the manifold after the system is shut down to minimize deterioration of the melt in the melt channel (64). The air flows helically around spiral vanes (84) which are mounted in the cooling bores (70,72) to avoid temperature stratification along the melt passage (64). <IMAGE></p> |
