Advantages of rotor spinning

Rotor spinning, called air spinning in China, is a combination of mechanical force and aerodynamics. Rotor spinning is one of the most mature new spinning methods in several new types of spinning, and it is also a new type of spinning method that is used most in production practice. At present, the world's rotor spinning has reached more than 8 million heads, its output accounts for about 45% of the total output of cotton yarn, and China has more than 1 million heads. What are the advantages of rotor spinning and other spinning?

In the spinning process, the cotton fiber strips are first fed into a carding device, combed into single fibers, and then fed into the spinning cup by airflow, and condensed in the surrounding cotton cups, when the bundled fibers are spun from the spinning When the yarn cup is taken out, it is twisted into a yarn and wound into a bobbin. Rotor spinning has a major breakthrough in spinning principle compared to ring spinning. It is characterized by separating the twisting mechanism from the winding mechanism and completely solving the problem of wear and burning of the ring and the wire ring in the ring spinning process. It is a major advancement in spinning technology. Its advantages are mainly reflected in the following aspects:

High speed and high output

The spinning speed of rotor spinning is based on the number of revolutions of the rotor. At present, the spinning speed of the rotor is generally 60-80,000 r/min. In the case of spinning coarse yarns, rotor spinning has the advantage of being stable and can completely replace ring spinning. The most conservative speed of spinning cotton yarn is 3 to 45,000 r/min, compared with ring spinning, and the speed of the spindle spinning spindle is only about 15,000 r/min. Under these conditions, if 20s of cotton yarn is spun, the yield of rotor spinning is 60 to 85 kg/kilogram, which is 1 to 2 times that of ring spinning.

In recent years, the Auto312 and Swiss R40 automatic rotor spinning machines manufactured by Schlafhorst Germany have a rotor speed of more than 150,000 rpm. The machine is also equipped with electronic yarn clearing, automatic joints and automatic cylinder change. Automatic yarn inspection device and automatic winding tension control system, the spinning count can be rotated for up to 60s. The knitting yarn and denim yarn produced by this high-grade rotor spinning machine are high in yarn and fabric. , yarn defect and hairiness are better than ring yarn, only the strength is lower, only 80% of the ring yarn, but because the rotor yarn is less, the strength is even, the minimum strength is weak, and the weaving is on the air jet loom. The efficiency of the weaving machine is higher than that of the ring yarn.

The product is unique and versatile

One of the characteristics of the rotor yarn is that the uniformity of the strip is good and the number of cotton knots is small, and it is also characterized by fluffiness, abrasion resistance, warmth, good dyeing performance and less hairiness. Therefore, it is widely used, not only for woven fabrics, but also for knitwear. Among the woven products are: bulky and plain woven fabric; high-quality poplin; flannel with uniform fluff and soft handfeel; leno with beautiful appearance and bright color; corduroy with soft and velvet roundness; Matte, breathable, wearable and washable sheets; as well as blankets, pajamas, towels, jacquard, curtain fabrics, upholstery fabrics and industrial supplies. In knit products, rotor yarns are also widely used. They can be used for woven cotton sweaters, underwear, pajamas, shirts, pants, skirts, outerwear, gloves and socks, etc. In recent years, labor cloths, corduroy, thin velvet shirts, pile fabrics, bed sheets, and yarn cards woven with rotor yarn have entered the international market. There are seven categories and more than 20 varieties have been rated as brand-name products and quality products by the state.

Short process flow and high production efficiency

Rotor spinning can be directly spun with cotton sliver and directly wound into a cheese yarn, eliminating the need for two processes of roving and winding, shortening the process, reducing equipment and floor space, and making the maximum weight of the package. 5kg, the capacity of the package is large, the number of dosing is small, and the car can be closed when the machine is unloaded, which not only reduces the labor, but also improves the production efficiency and saves investment. The productivity is about 4 to 6 times that of ring spinning. In terms of provincial and provincial wages. When spinning coarse yarns, it is about 1/4 of ring spinning; when spinning fine yarns, it is about 1/3 of ring spinning, which has great development potential in this respect.