Dual feed single cavity injection molding system

Details Dual feed single cavity injection molding system Dual feed single cavity injection molding system

B - Operations, Transporting

29

C

18/709

B29C 45/73 (2006.01) B29C 45/28 (2006.01)

Patent

CA 1252972

ABSTRACT OF THE DISCLOSURE This invention relates to a manifold housing for a valve gated single cavity injection molding system. The heated manifold housing has a dome portion and a base portion which is secured to a heated nozzle with aligned central bores through which the valve pin extends. Hydraulic actuating mechanism is mounted inside the manifold housing to reciprocate the valve pin between open and closed positions. The melt duct in the manifold branches from a central inlet into two separate arms with smoothly curved bends which extend to join the central bore on opposite sides of the valve pin. Providing two streams of melt which meet at the valve pin avoids the problem of streaking and slow melt flow on one side of the valve pin.

521873

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