Valve nozzle devices

Details Valve nozzle devices Valve nozzle devices

1982-07-29

1984-04-17

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

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

With means between charger and mold to cut off flow of...

26432812, 425570, B29F 103

Patent

active

044431783

ABSTRACT:
A valve nozzle device provided between a heating cylinder of an injection molding machine and at least one metal mold, includes at least one nozzle combined with at least one needle valve for injecting plastic resin melted in the heating cylinder into the metal mold. The device is further provided with a first passage connected with the heating cylinder, third passages each provided around the needle valve to be merged into the nozzle, and second passages interconnecting the first and the third passages. The second passage has a central axis extending in a plane other than a plane including a central axis of the needle valve, and is connected with the third passage in a positional relation such that the plastic resin in the second passage flows into the third passage from one side thereof followed by a helical path around the needle valve.

REFERENCES:
patent: 4303382 (1981-12-01), Gellert

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