| 摘要 |
<p>PURPOSE:To keep a strip tension after shear cutting constant by increasing an electric current of pinch rolls in the mean time till the front end of a metallic strip is wound by a reel after shear cutting the strip. CONSTITUTION:When a shear cut point reaches a final stand 6, a control computer 60 drives pinch rolls 41 to drive the stand 6 faster, thereby press-attaching the rolls 41 to a strip. When the strip is cut by a shear 46, the electric current of a motor 42 for driving the pinch rolls 41 is increased, to keep the tension of strip at a prescribed tension at the outlet side of stand 6. Next, when the front end of a succeeding strip arrives at a reel 61 and is wound thereby, the reel 61 produces a tension in the strip. At that time, the computer 60 commands a pinch-roll control device 44 to return the current of motor 42 to the original current value used before cutting and the tension of strip at the outlet side of stand 6 to the original one, before releasing the pinch rolls 41 from the strip.</p> |
