Application Cases of Frequency Converter in Textiles

Frequency conversion speed regulators are used in textile machinery and equipment, and it can be said that they are basically used in the machinery and equipment of every process. Including opening and cleaning machine, carding machine, sliver coiling machine, combing machine, drawing frame and its roving frame, spinning frame and Luojian machine, etc. For weaving machinery, there are sizing machines, warping machines, etc. In addition, AC frequency converters are also widely used in knitting machines, non-woven fabrics, chemical fiber machinery, and printing and dyeing equipment. The following introduces the roving frame machine sizing machine.

a. High speed roving frame

This type is a new type of roving frame developed in recent years. Industrial computer, PLC and frequency converter are used to control 4 motors, each of which rotates the flyer, roller, simple pipe and dragon tendon elevator, and the cone wheel speed change device, forming equipment, etc. are eliminated, and the organization is simplified. High efficiency, high reliability, low noise, helpful for practical operation and maintenance. The processing technology has good adaptability and reduces the chance of breaking. The maximum speed can reach 1500r/min, and the application of new technologies such as man-machine swap and fully automatic and precise positioning of the parking wing has been completed. It is a high quality roving frame.

b. Sizing machine

This sizing machine is an AC layer-by-layer transmission system. The desizing tank, the sizing tank and the oven are driven by an AC frequency conversion motor, and the weaving beam and the dragging roller are independently driven by an AC servo motor and a frequency conversion motor. Shared 5 inverters, 2 servo motor controllers and their working pressure, temperature, moisture regain and other sensors. It is controlled by industrial computer and programmable logic controller PLC. A layer-by-layer control system software is formed. Among them, PLC is used to control the main parameters such as the position and moisture regain of the whole machine, the temperature of the drying room and the size tank, and the working pressure of the pressing roller. The whole machine is controlled by industrial computer. This machine has high-precision control, stable characteristics, and low equipment failure rate. It is a high-quality, high-quality machine equipment.

Characteristics of AC frequency conversion speed regulation

1. Reduce functional loss control cost

Knitting factories are inseparable from air conditioning and ventilation equipment. When the central air-conditioning motor is controlled by a frequency converter, the function loss is reduced and the electricity consumption is greatly saved. According to the data provided by a certain company, 12 air conditioners can save more than 240,000 yuan in electricity throughout the year, and the average power consumption of air conditioners has been reduced by 6 or 7 points.

2. Simplified organization and improved features

According to the control of PLC programmable controller or industrial computer, the synchronous and harmonious operation of multiple motors is realized through the frequency conversion speed regulator. The movement of each organization is controlled according to the production process graph, thus simplifying the organization. For example, the roving frame uses AC frequency conversion speed regulation, which eliminates the cone wheel speed regulation mechanism, and then gets rid of the problem of the deviation of the cone wheel speed regulation transmission belt and the prohibition of speed regulation.

As for the spinning machine, since the forming camshaft in the forming structure is removed by using the frequency conversion speed regulator, the situation that the bottom of the peach is intermittent and the top of the peach is impacted due to the forming camshaft is eliminated. Make the spun yarn roll look good. It is convenient for high-speed unwinding in the next process. In addition, the frequency conversion speed controller is used to control the speed of the thirty-nine main motor to control the speed of the spindle, so that the speed ratio of the spun yarn is changed when the yarn is large, medium and small, so as to reduce the yarn breakage rate.