Roller leveler and metal sheet flattening method
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United States of America Patent
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May 10, 2016
Grant Date -
Dec 12, 2013
app pub date -
Feb 3, 2012
filing date -
Feb 24, 2011
priority date (Note) -
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Abstract
A roller leveler for flattening a metal sheet or plate having a cut-sheet form includes leveling rolls disposed in a staggered state on upper and lower sides of a pass line and configured to sandwich and flatten the metal sheet while pressing it therethrough, a hydraulic pressing cylinder configured to press the metal sheet via the leveling rolls, a drive unit configured to rotate the leveling rolls, and a pinch roll unit disposed on one side of a leveling roll array area and including a pair of pinch rolls. The pressing cylinder presses the metal sheet via the leveling rolls with a pressing amount necessary for flattening the metal sheet, while the metal sheet is passed by a drawing force applied by the pinch rolls and a driving force applied by the drive unit.
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