| 摘要 |
The method of bending the long length of the member and a bending apparatus which are capable of restraining the occurrence of wrinkles in flanges of the long length of the member, preventing free end sides of the flanges from buckling, and setting and taking out the long length of the member easily in bending a long length of a member in the longitudinal direction, which is approximately L-shaped or U-shaped in cross section and has a platelike bottom portion and flanges installed in a standing manner at the end of the platelike bottom portion, it is to provide. By using an inner forming assembly forming an inner bent shape of the long length of the member, an outer forming assembly having a forming pad being capable of projecting and retracting so as to form an outer bent shape of the long length of the member and die plate being rotatable following the forming pad and a sidewall provided in the longitudinal direction of the outer forming assembly, and by pressing the long length of the member in the outer forming assembly with the inner forming assembly and by doing the ironing of the flanges with the sidewall and the inner forming assembly, the occurrence of wrinkles in flanges is restrained, and free end sides of the flanges is prevented from buckling by extending gradually a bending fulcrum through a retraction of the forming pad and rotations of the die plates. Further, by installing a moving mechanism to the sidewall, setting and taking out the long length of the member is facilitated.
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