| 摘要 |
PURPOSE:To eliminate the generation of swelling up of shoulder parts of continuously formed products and to eliminate excess force required for pressure contact, by pressing both sides of continuously formed products having a shape similar to a square steel pipe and providing a specified squeeze roll which is in press contact with the butted end of left and right flanges. CONSTITUTION:A continuously formed product C having a shape similar to a square steel pipe formed by pressing a steel plate is formed to a regular shape in a forming rolling mill. A squeeze roll that is attachable and detachable to and from the product C on both sides of a product carrying passage 15 of the forming rolling mill is divided into upper and lower parts 25A, 25B. The former is made to a vertically movable inverted conical trapezoid, and a flange part that can contact the upper face of the flange of the product is formed on the upper end. A slide 20 and a slide body 24 are moved according to the size of the product C, and rolls 25A, 25B are rotated by a driving device 33. The sides of carried-in product C are pressed successively by rolls 26, 27 of the upper side to become the regular shape, and the end of butted part of left and right flanges are brought into press-contact with each other, and at the same time, welded at high frequency. Spring back of the product is prevented by rolls 28, 29 of the lower side and made to the shape of the product. |
