Apparatus for controlling the load/relief pressures in a calende

Details Apparatus for controlling the load/relief pressures in a calende Apparatus for controlling the load/relief pressures in a calende

1989-10-20

1991-01-22

Coe, Philip R.

Presses

Concurrent pressing and conveying

Roll type

100170, B30B 304

Patent

active

049861778

ABSTRACT:
There is disclosed a load/relief apparatus for use in a calender of a papermaking machine having a force transfer member positioned between on upper fluid actuator and two lower spaced apart fluid actuators. A linking arm is releasably connected to the lower part of the transfer arm spaced between the two lower fluid actuators. The linking arm is adapted to be connected to a lifting arm for a calender roll. In operation, the upper fluid actuator exerts a generally linear downward force that is transferred by the transfer member moving downwardly against the linking arm and thereby pushing the lifting arm down. The lower fluid actuators are adapted to exert a generally upward linear force that is transferred by the transfer member moving upwardly raising the linking arm and the lifting arm. The linking arm is releasable from the transfer member to permit the linking arm to be lowered beyond the travel associated with the deflation of the lower fluid actuators during normal relief operation.

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patent: 4485734 (1984-12-01), Klemmer et al.
patent: 4641569 (1987-02-01), Smith et al.

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