Valve-gated injection moulding device

Details Valve-gated injection moulding device Valve-gated injection moulding device

1997-09-30

1999-11-16

Heitbrink, Tim

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...

425564, B29C 4523

Patent

active

059846615

ABSTRACT:
A valve-gated injection moulding device in which an actuating device of the valve pin comprises a sliding member having its walls in sliding engagement with an axial guide track. The sliding member comprises a radial opening defined by an upper and a lower contact surface. A free end of an actuating lever having two curved actuating surfaces extends radially into the opening of the sliding member. Thanks to this construction, a compact and accurate actuating device is provided which reduces radial forces on the valve pin, such that it can be operated without friction or wear. Residual radial forces are taken up by the sliding member. The stroke of the actuating device can be adjusted after mounting in a cavity plate of an injection moulding device.

REFERENCES:
patent: 3488810 (1970-01-01), Gellert
patent: 3915358 (1975-10-01), Hehl
patent: 4212626 (1980-07-01), Gellert
patent: 4449915 (1984-05-01), Van Den Brink
patent: 4919606 (1990-04-01), Gellert
patent: 5208046 (1993-05-01), Shah et al.

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