Control method for reducing broken ends of yarns of spinning frame

Abstract

The invention discloses a control method for reducing broken ends of yarns of a spinning frame. The control method is characterized by comprising a starting step, a step for spinning small yarns, a step for spinning medium yarns, a step for spinning large yarns, a yarn feeding step and a high-speed halfway stopping step. When a fan is started, a ring plate moves upwards to an initial spinning position and moves upwards continuously; the ring plate moves upwards to an appropriate spinning position; a main motor is operated at a low speed; the ring plate moves downwards to the initial spinning position from the appropriate spinning position; the spinning is carried out at a low speed; if the operating time is equal to Pd, the step for spinning the medium yarns is started; the ring plate moves upwards to the appropriate spinning position first and then moves downwards to the initial spinning position; an air ring can be opened in time; the wavelength of the air ring is shortened; the tension of the yarn is reduced, and the broken end rate of yarns when the small yarns are spun can be greatly reduced; in order to protect the ring plate motor, the operating time of the ring plate motor can be set to start five seconds later after the fan is started, and if an initial spinning position sensor is in malfunction, the ring plate motor can be stopped when moving upwards for five seconds at most.

Description

[0001] The present invention is a divisional application of application number 2013100334192, application date January 29, 2013, and title of the invention "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 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 yarn on 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 the breakage rate of the spinning f...

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 breakage rate of the spinning frame, at present, frequency converters are generally used to control it. However, due to the large number of old-type 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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