Hot runner manifold flow distributor plug

Details Hot runner manifold flow distributor plug Hot runner manifold flow distributor plug

1979-12-14

1981-11-10

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With coupling between charger and mold

137561A, 222478, B29F 104

Patent

active

042995531

ABSTRACT:
This relates to a hot runner manifold for distributing thermoplastic melts from a plasticizer to plural cavities of a mold. The manifold is formed in two parts which include a plate and a ring which are joined along a central parting line in a manner wherein all of the sprue and runner portions may be readily and accurately machined. The ring is shrunk in place on the plate and has an interference fit which is sufficient to prevent separation of the ring from the plate during normal operating conditions without the use of any fasteners. Distribution from a primary sprue into the plural runners is made efficient by providing a distributor plug which is aligned with the primary sprue and forms elbows between the primary sprue and a first runner which is of the same cross section as the runners and which provides for a smooth and even transition between the primary sprue and the runners.

REFERENCES:
patent: 2239338 (1941-04-01), Norelli
patent: 3696840 (1972-10-01), Odhner
patent: 3704723 (1972-12-01), Wheston
patent: 4033485 (1977-07-01), Kohler

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