Roll with controllable bow for use in strip processing machines

B - Operations – Transporting – 30 – B

Patent

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Details

18/1027, 92/21.5

B30B 15/00 (2006.01) B29D 7/00 (2006.01) B30B 3/00 (2006.01) D21G 1/02 (2006.01) F16C 13/00 (2006.01)

Patent

CA 1125076

ABSTRACT A roll with controllable bow has a cylindrical inner part and a tubular outer part surrounding the inner part and end-mounted in such a man- ner as to rotate thereon. Arranged upon the inner part, along a surface line are spaced heater bands. Arranged in the inner part is at least one elec- trical temperature sensor in the immediate vicinity of the heater band and at least one additional electrical temperature sensor on the side of the inner part remote from the heater bands. The two temperature sensors are connected to a device for measuring the temperature difference and govern?n electrical control circuit to which is connected a heating circuit of the heater band. Heating of the heater band is controlled in such a manner that a pre-determined temperature difference is maintained between the heated and un- heated sides of the inner part. The differential longitudinal expansion of the unheated and heated sides of the inner part causes the inner part to bow, and this bow is transferred to the outer part through bearings. The side of the inner part remote from the heater band may be cooled.

334774

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