Winding and unwinding tension automatic correcting method of wire drawing machine

Abstract

The invention provides a winding and unwinding tension automatic correcting method of a wire drawing machine. The method comprises the following steps: setting a radius of an winding roll in an empty state for a frequency converter; setting a frequency converter output frequency when the winding roll is empty; setting a radius of the winding roll in a fully-wound state for the frequency converter; setting a frequency converter output frequency when the winding roll is fully wound; and in the winding process, adjusting an output torque of the frequency converter according to the rolling diameter radius of a wound material, so as to change the torque of a winding roll motor, so that the tension of the wound material is constant. According to the invention, the tension in the winding and unwinding process can be constantly controlled.

Description

technical field

[0001] The invention relates to a control method, in particular to a control method for winding and unwinding tension of a wire drawing machine. Background technique

[0002] At present, in the wire drawing machine industry, when using winding and unwinding equipment for high-speed winding materials, the commonly used control methods include constant torque control and PID adjustment with tension sensor feedback. Using a PID adjustment system with tension feedback requires additional capital investment, large-scale transformation of the control circuit of the winding and unwinding equipment, and frequent maintenance of the tension feedback sensor, which increases maintenance costs.

[0003] Constant torque control is to use the frequency converter to adjust the output power of the rewinding roller motor to ensure that the motor torque of the rewinding roller motor is constant when it is loaded, and to ensure that the rewinding roller can complete the high-spe...

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