| 摘要 |
<p>PURPOSE:To improve the yield of the front tip and tail end of a band steel, by detecting the number of winds, the amount of winding angle, and the running speed of a band steel in a reversible rolling mill to calculate the length of band steel wound by winders and the winding angle at the time of rewinding, and starting the mill at low speed when the wound length becomes lower than a fixed length and stopping the mill when the wound angle becomes lower than a fixed angle. CONSTITUTION:A rolling mill 1 is connected through a transmission mechanism to a speed controlling device 17, and a band steel 4 is rolled while controlling the speed of a mill, and is wound around the drums 2, 3 of winders. Next, detectors 12 for the number of revolutions and detectors 11 for the reference angle are attached respectively to the drums 2, 3 through transmission mechanisms. And both signals of the detectors 11, 12 are inputted to integrators 13 to obtain angle signals of the drums. That is, when the integration is started or stopped by a signal outputted from the detector 11 while integrating a signal of the number of revolutions outputted from the detector 12, the value integrated by the integrator 13 is made equivalent to the angle signal of the drums 2, 3.</p> |
