| 摘要 |
<p>The present invention relates to a spiral roll bender apparatus which bends a straight plate in such a way that the straight plate has a changing radius of bending. The roll bender apparatus includes a roll bending machine rotatably provided at a base frame. The roll bending machine includes both side plates installed to be spaced apart in a predetermined interval and having a disk with a gradually-changing radius of curvature formed; and a fixer fixing an end of the straight plate placed on outer peripheral surfaces of the side plates. The base frame includes a motor rotating and driving the roll bending machine; and a pressing roller pressing the straight plate with the side plates of the roll bending machine rotated by the motor to bend the straight plate.</p> |
