| 摘要 |
A round bender is disclosed. The round bender according to the present invention comprises a plurality of bending roll units arranged along a process line between bender frames at both sides to mold a linear molding beam into a curved shape. The bending roll units each include upper/lower bending rolls to be rotated between the bender frames and are formed in order for the molding beam to be curved with predetermined curvature by passing through a gap between the upper/lower bending rolls. The upper/lower bending rolls of the final bending roll unit positioned at the final process line are installed through a curvature change member to change a curvature radius relative to a predetermined section of the molding beam as the lower bending roll rotates relative to the upper bending roll. |
