Method of making an overmolded waterway connection

摘要

A process for providing an overmolded waterway comprising inserting a shaft portion of a sacrificial core into an end of a tube, the shaft portion having a first opening therein, the sacrificial core having a second portion comprising a second opening and a contact surface about the second opening, the second opening in fluid communication with the first opening and the inside of the tube, in a mold cavity inserting a core pin transverse to the tube end, the sacrificial core contact surface engaging a mating surface of the core pin closing the second opening, injection overmolding over a portion of the tube end and core pin forming an overmolded waterway having an outlet portion in fluid communication with the second opening and the inside of the tube, and removing the core pin from the second opening through the outlet portion and removing the overmolded waterway from the mold cavity.

主权项

1. A process for providing an overmolded waterway comprising
providing a longitudinal tube having a tube inside dimension at a proximate end, inserting a shaft portion of a sacrificial core into said end of the tube, the shaft portion having a first opening therein, the sacrificial core having a second tubular portion adjacent the end of the tube comprising a second opening, the second opening in fluid communication with the first opening and the inside of the tube, positioning at least the end of the tube with the sacrificial core into a mold cavity having a desired shape, positioning a core pin at least partially into the mold cavity with a portion of the core pin into the sacrificial core second opening closing the second opening, injection overmolding a waterway over a portion of the tube end and core pin in the mold cavity, the overmolded waterway having an outlet portion in fluid communication with the second opening and the inside of the tube, and removing the core pin from the second opening through the outlet portion and removing the overmolded waterway from the mold cavity.