| 摘要 |
PURPOSE:To allow plural guide rolls quickly to correspond to the change of size of a material to be rolled, by supporting a size-adjusting cam with the aids of profiling rolls and supporting rolls, and rotating the cam in the circumferential direction. CONSTITUTION:Plural guids 2 arranged at equal intervals on the circumference are rotatably supported by a supporting frame 4, and guide rolls 3 and profiling rolls 6 are attached to the tips of respective guides 2. Further, springs 8 are attached so that the rolls 6 are always in contact with a size-adjusting cam 7. The cam 7 is supported by the rolls 6 and supporting rolls 10 attached to the frame 4, and is rotated in the circumferential direction by a driving device 9. The plural rolls 3 are concentrically displaced at the same time in proportion to the portion of radially displacing quantity of the cam 7 from its rotating center by the rotating angle at this time. |
