JPS54112960A - Drive control in winding sheet - Google Patents

Abstract

PURPOSE:To prevent wrong winding and the occurrence of crease of a wound sheet, by controlling a winding shaft driving motor according to the target torque value calculated from the data of the diameter of a wind-up bobbin, the width of a wind-up roll, the entrapped air ratio of the wind-up roll, etc. CONSTITUTION:The inertia torque signal of a wind-up roll is calculated by the arithmetic unit of the inertia torque 13 using the velocity signal from the velocity detector 12 equipped on the delivery nip rolls 2 and 3, the roll diameter signal from the roll diameter detector 11, and the preset roll diameter signal of the wind- up bobbin. The inertia torque signal obtained from the arithmetic unit of the inertia torque 13 is added to the command signal of the wind-up torque, set by the torque setting unit of the direct current motor 14 and the taper torque setting unit 15, by the adder 16 to give the target command signal of the wind-up torque after correction of the inertia torque. The motor M is controlled by the command signal.