A control method and device for reducing yarn breakage of spinning frame

Abstract

The invention discloses a control method for reducing yarn breakage of a spinning frame. The control method comprises the starting step, the step of spinning the small yarn, the step of spinning the medium yarn, the step of spinning the large yarn and the step of doffing. A blower is started, a steel collar plate is upwards moved to the initial spinning position while the blower is started, and continuously moved upwards from the initial spinning position. The upward time is Pe. The steel collar plate is upwards moved to the suitable spinning position, and then a main motor is operated in the low speed, the steel collar plate is downwards moved from the suitable spinning position to the initial spinning position. The downward time is Pf. The steel collar plate is upwards moved to the suitable spinning position first, and downwards moved from the suitable spinning position to the initial spinning position. An air ring is opened in time, the wave length of the air ring is shortened, the yarn tension is reduced and the breakage rate of the yarn is greatly reduced during the moment of spinning the small yarn. In addition, the motor of the steel collar plate can be protected, and the operation time of the motor of the steel collar plate is set as 5 seconds from the blower start. If a sensor on the initial spinning position does not work, the motor of the steel collar plate is stopped after at most 5 seconds of upward movement.

Description

[0001] The present invention is a divisional application with the application number 2013100333857, the application date is January 29, 2013, and the title of the invention is "a control method and device for reducing yarn breakage of spinning frame". technical field [0002] The invention relates to a control method for the spinning process of a spinning frame, which is suitable for the spinning frame, in particular to a control method and a device for reducing yarn breakage of the 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 1, and reducing the breakage 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 t...

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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