Injection molding system having clamped rotatable nozzles and me

Details Injection molding system having clamped rotatable nozzles and me Injection molding system having clamped rotatable nozzles and me

1987-12-07

1988-12-27

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

2643289, 26432815, 425564, 425566, 425570, 425573, B29C 4522

Patent

active

047937955

ABSTRACT:
This invention relates to a valve gated injection molding system in which a number of melt conveying nozzles leading to a common cavity are releasably clamped to the side surface of an elongated manifold. A cylindrical collar around the inlet to each nozzle is received in a recessed seat around each outlet from the manifold. This structure facilitates assembly and ensures alignment of the inlets and outlets, while permitting for some rotational movement between the nozzles and the manifold due to thermal expansion. The integral nozzles are made by vacuum casting a heating element and vacuum brazing a side member with a sidewards projecting face into a steel main body.

REFERENCES:
patent: 4422841 (1983-12-01), Alfonsi et al.
patent: 4530654 (1985-07-01), Rose
patent: 4688622 (1987-08-01), Gellert
patent: 4702689 (1987-10-01), Schmidt et al.

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