Method and device in an adjustable-crown roll
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United States of America Patent
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-
Aug 15, 1989
Grant Date -
N/A
app pub date -
Nov 23, 1987
filing date -
Nov 21, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method in an adjustable-crown roll, in which a series of hydraulic loading elements is used. A central axle of the roll is supported by axle journals, by means of deflection bearings. A cross-section of the central axle is shaped such that the axle has sufficiently high rigidity in a nip plane. In the method, the central axle is rotated about its deflection bearings over an angle, which may be within the range of about 30.degree. to 180.degree.. A free space that is created or enlarged between the central axle and a roll mantle thereby, and provided between the central axle and an inner surface of the roll mantle, is utilized as an opening gap for the nip formed by the variable-crown roll, by allowing the roll mantle to be shifted, e.g. by the effect of gravity, or by affirmatively shifting the mantle relative to the rotated central axle.
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