| 摘要 |
<p>PURPOSE:To improve the accuracy of sheet thickness and to improve the yield by correcting the position of the bridle roll and the number of revolution of pay-off reel so that the tensile force of strip is made constant. CONSTITUTION:The movement adjustment of the bridle roll 19 is executed by moving the piston rod 18a of the cylinder 18 with the output calculated by the calculator 23 so as to make the signal (a) of the tension detector 14 of the strip 12 equal with the ideal set value (b). Because the inertia force of the bridle roll 19 is smaller in comparison with the inertia force of the pay- off reel wound with the strip coil 10, the tension variation caused by the change of the gap G between the working rolls 2, 3 can be dealt with instantaneously, the accuracy of sheet thickness can be improved. The variation of tensile force is easily and quickly corrected according to this invention to improve the accuracy of sheet thickness, and the excessive tensile force can be prevented from applying to the strip.</p> |
