| 摘要 |
PURPOSE:To improve the performance of bending molding by installing a holding device used for slidingly supporting a stock and a bending roll device as well as eccentrically moving the holding rolls of the rear side of said holding device. CONSTITUTION:A molding stock M2 obtained by forming a strip into a prescribed cross-sectional shape is formed by bending it by a bending roll device 40 after passing through a holding device 30. The device 30 is constituted of loosely fitted rolls 31a, 31b, 32a, 32b and 33a, 33b. The roll 33a of rolls 33a, 33b is fixed to a machining bed, but the 33b is attached so as to be eccentrically moved through a bracket frame. The device 40 is provided with bending rolls 43a, 43b and is made to be freely rockable to the right or left side around a supporting axis 44. By this mechanism, the molding of sharp and small radius of curvature can be smoothly performed by the rocking of bending rolls 43a, 43b and the eccentric movement of holding rolls 33b, and the molding performance is improved. |
