Calender

Details Calender Calender

1974-01-30

1976-02-03

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

425DIG235, 72 8, 425224, 425367, B29C 1500, B29D 714, B29H 300

Patent

active

039362582

ABSTRACT:
A calender especially suitable for use with rubber and plastic material. One of two opposed rolls is movable toward and away from the other through direct action of long-stroke fluid actuators that move the bearing boxes on opposite ends of the movable roll. Roll spacing is directly sensed by position-sensitive transducers acting between opposed bearing boxes and responsive to the relative roll positions. The transducers signal changes and initiate correction to retain roll spacing at a set distance. The fluid actuators are controlled to separate the rolls upon power failure and to prevent roll contact in the event work product is not between the rolls.

REFERENCES:
patent: 3263284 (1966-08-01), Orr et al.
patent: 3389588 (1968-06-01), Reinhardt et al.
patent: 3435648 (1969-04-01), Bergstrom et al.
patent: 3492845 (1970-02-01), Nomura
patent: 3516273 (1970-06-01), Stone
patent: 3566638 (1971-03-01), Herbst
patent: 3578766 (1971-05-01), Diolot
patent: 3587267 (1971-06-01), Townsend
patent: 3753350 (1973-08-01), Nott
patent: 3850015 (1974-11-01), Anderson

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