| 摘要 |
PURPOSE:To straighten effectively a malformed metallic sheet by turning the axial directions of rolls located at one side of the rolls of convex-crown bodies arranged zigzag in different levels and providing an uneven bending stress to the width direction of a metallic sheet to be passed through a roll gap. CONSTITUTION:Plural rolls 1, 2 having each a convexly crowned body are arranged zigzag in different levels to pass a metallic sheet (w) through a gap between the rolls 2, 1 located at the upper and lower sides, and at least the rolls 2 at the upper side are supported so as to enable their axes to turn by an intersecting angle alpha with respect to the width direction of said metallic sheet (w). Bending deformation of large curvature is provided to the inside part of metallic sheet (w) by regulating the turning posture of roll to alpha=0 when the edge wave of sheet (w) is malformed. When the inside wave is produced, the edge part is deformed by bending by a proper intersection angle alpha to stretch the edge part relatively in large quantity as compared with the inside part. Further, in the case of only warp, the angle alpha is set so as to make the elongation of edge part equal to that of the inside part thereby straightening the warp. |
