Control method and device for reducing yarn breakage in spinning frame

Abstract

The invention discloses a control method for reducing yarn breaks of spinning of a spinning frame. The control method includes the steps of starting, small yarn spinning, medium yarn spinning, large yarn spinning and doffing. The large yarn spinning step starts from the step 108, when yarn on a bobbin reaches 90-95% of the total amount of spinning, a full bobbin sensor outputs a full bobbin signal and judges whether a right sensor outputs a signal or not, if yes, spinning is operated at a low speed, operation time is judged to be less than or equal to Pg, the doffing step is executed if the operation time is equal to Pg, the original full bobbin sensor moves down properly in position, and in other words, when the yarn reaches 90-95% of the total amount of spinning, the full bobbin sensor sends out the signal; operation is controlled by the aid of the signal outputted by the right sensor, high speed and low speed shifting in the descending process of a ring rail is realized, the spinning frame is operated at the low speed for time Pg till reaching the full-yarn position, doffing is executed, and breakage rate of the yarn is lowered effectively.

Description

[0001] The present invention is a divisional application with application number 2013100333791, application date January 29, 2013, and the title of the invention "a control method and device for reducing yarn breakage in spinning frame". technical field [0002] The invention relates to a method for controlling the spinning process of a spinning frame, in particular to a control method and a device for reducing yarn breakage in spinning on a spinning frame, and belongs to the technical field of textiles. Background technique [0003] In the textile industry, the spinning frame is usually used to spin on the bobbin, and reducing the end-break rate of the spinning frame during spinning is the goal that the industry has been pursuing. Traditional equipment still in use in the market, such as FA502, FA503 and A513, etc., mainly use AC contactors to control the spinning process of the entire spinning frame. control. In order to reduce the yarn breakage rate of the spinning frame...

AI Technical Summary

Problems solved by technology

Traditional equipment still in use in the market, such as FA502, FA503 and A513, etc., mainly use AC contactors to control the spinning process of the entire spinning frame. control

In order to reduce the yarn breakage rate of the spinning frame, at present, frequency converters are generally used to control the realization. However, due to the large number of old spinning frames mentioned above in the textile industry, these spinning frames are transformed. The frequency converter of each device is combined with the The cost of PLC is nearly 10,000 yuan. It is very difficult for many textile enterprises using old equipment to realize this method of control, which affects the product quality and output of these enterprises.

On the other hand, flying flowers are easy to block the heat dissipation system of the frequency converter, which is the disadvantage of the old type of spinning frame controlled by the frequency converter, and it is also the main reason that the frequency converter is easy to burn out or even cause a fire after being used for a long time

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