Controlled deflection roll
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United States of America Patent
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-
Mar 30, 1993
Grant Date -
N/A
app pub date -
Dec 29, 1991
filing date -
Aug 4, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a roll arrangement having a material web travelling between a controlled deflection roll and a counter roll, an increased edge compression of the material web at the edges is prevented in that there are provided additional spreading elements effective transverse to the pressing plane (E), which elliptically deform the roll shell, and thus, cause a reduction of the pressing force of the hydraulic support elements which are effective in the pressing plane. By means of a control device, e.g. partition walls which are synchronously axially displaceable by spindles there is achieved the result that upon altering of the working width only the required support elements receive pressurized medium, and equally, only the spreading elements located externally of the working width.
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