Roll leveller for metal sheets and a process for levelling a metal sheet with it
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Feb 18, 2014
filing date -
Feb 19, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A roll leveler for metal sheets, comprising a plurality of leveling rolls (R1-R21), a plurality of adapter shafts, a plurality of torque limiters. Each adapter shaft is arranged for actuating at least one of the leveling rolls (R1-R21) and drives or is driven by one of the torque limiters. Each of the torque limiters is arranged for limiting, to a predetermined limit torque, the maximum driving torque that the relative adapter shaft can transmit to a relative leveling roll (R1-R21), driving it, and is provided with a torque regulator arranged for varying the predetermined limit torque also when the leveler is leveling the metal sheet to be processed (L). Each of the torque limiters, or in any case, each adapter shaft is arranged for actuating the relative leveling roll (R1-R21) also after reaching the predetermined limit torque.
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