Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1987-03-05
1988-03-08
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
26432815, 425566, 425571, 425DIG227, B29C 4573
Patent
active
047297336
ABSTRACT:
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.
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Chiesa Richard L.
Mold-Masters Limited
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