Yarn tension control device for cheese winder and control method thereof

Abstract

The invention provides a yarn tension control device for a cheese winder and a control method thereof. The yarn tension control device comprises a single spindle controller, a tube replacing support and a tension device, and is characterized in that a bijection photoelectric sensor is arranged in a horizontal plane which is one third cop height away from the bottom of a cop; transmitting and receiving parts of the photoelectric sensor are positioned on both sides of the cop; central connecting lines of the transmitting and receiving parts are tangential to a yarn outer ring when the cop is unwound to a position which is one third cop height away from the bottom of the cop; and the signal output end of the photoelectric sensor is connected to the single spindle controller. During cop winding, the single spindle controller is used for winding according to a normal procedure; after winding to a cop height which is one third away from the bottom of the cop, light beams of the photoelectric sensor are not blocked by yarns, the output signal of the photoelectric sensor varies, pressure applied to yarns by the tension device is lowered by using the single spindle controller, rapid increase of the cheese tension is suppressed, the cheese tension is kept uniform, and yarns are prevented from being broken. The yarn tension control device is simple in structure, has low failure rate, is low in cost, and is convenient to use and maintain.

Description

technical field [0001] The invention belongs to the technical field of textile equipment manufacturing, and relates to the improvement of a winding machine control device, in particular to a winding machine yarn tension control device and a control method thereof. Background technique [0002] The winding machine unwinds the small-capacity bobbin falling from the spinning frame, and at the same time winds the unwound yarn into a large-capacity bobbin. Since the absolute value of the axial unwinding tension of the bobbin is relatively small, a tension device is required Gives a tension increment to the yarn. During the unwinding process of the bobbin, due to spun yarn forming and other reasons, there is a certain tension change in the yarn, especially when the yarn is unwound to 1 / 3 of the remaining total yarn, the unwinding tension increases sharply. The change may cause the yarn to be pulled and broken. After the yarn breaks, it must be stopped and reconnected, which affec...

AI Technical Summary

Problems solved by technology

This method has a complex mechanism, and its function is affected due to a certain mechanical or electrical action not in place, the failure rate is relatively high, and the cost is higher than the first method.

[0006] The third method is: the patent titled "Uniform Control Method and Control Device for Unwinding Tension of Automatic Winder" (Application No. 201010245932.4), which discloses the method of reducing the unwinding tension by moving the bobbin up and down. This method is only suitable for fine-winding and large yarn warehouse type automatic winding machines, not for ordinary manual feeding automatic winding machines, and requires a complex lifting mechanism, which has the disadvantages of high cost and many failure points question

Images