Rubber shaping machine

Details Rubber shaping machine Rubber shaping machine

1988-03-14

1989-10-24

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

425547, B29C 4567

Patent

active

048758493

ABSTRACT:
A rubber shaping machine includes an upper mold, an upper middle mold, a lower middle mold, and a lower mold operated by a main oil cylinder and two auxiliary cylinders so as to open the mold in multi-steps. The machine also includes a feeding system capable of being suitably heated and cooled to facilitate the changing and cleaning of the rubber material therein and capable of preventing the rubber material from being hardened. An injection head device is disclosed which prevents the rubber material from being split.

REFERENCES:
patent: 2428275 (1947-09-01), Frankwich et al.
patent: 2790204 (1957-04-01), Edwards et al.
patent: 3484901 (1969-12-01), Anderson
patent: 3728060 (1973-04-01), Hehl
patent: 3754848 (1973-08-01), Choate
patent: 3914975 (1975-10-01), Kawano
patent: 3986805 (1976-10-01), Haines
patent: 4105385 (1978-08-01), Hehl
patent: 4245971 (1981-01-01), MacMillan
patent: 4318682 (1982-03-01), Larson et al.
patent: 4345965 (1982-08-01), Lindenmayer et al.

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