Injection molding machine with hydraulically operated closure de

Details Injection molding machine with hydraulically operated closure de Injection molding machine with hydraulically operated closure de

1975-11-05

1977-06-28

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

4254512, 4254517, 425DIG223, 425595, B29F 106

Patent

active

040322777

ABSTRACT:
Two halves of a split mold of an injection molding machine are respectively mounted on a stationary plate and a movable plate guided on guide rods projecting from the stationary plate for movement toward and away from the latter. A guide plate, likewise guided on said guide rods, is connected to the movable plate for movement therewith, and a moving arrangement is connected to the guide plate for moving the same and the movable plate connected thereto toward and away from the stationary plate to thus move the mold halves between an open and a closed position. The guide plate includes a clamping arrangement for clamping the guide plate in fixed position on the guide rods and a hydraulically operated arrangement for holding the mold halves in closed position against the force of molding material injected under pressure into complementary cavities in the mold halves.

REFERENCES:
patent: 2862238 (1958-12-01), Cuzzi
patent: 3245122 (1966-04-01), Mauder
patent: 3327353 (1967-06-01), Eggenberger
patent: 3543346 (1970-12-01), Breher

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