Analyzing How Diameter Of Spinning Cup Affects Yarn Count

< p > the diameter of the spinning cup is greatly related to the number of products and the technological speed.

In the power consumption of the rotor spinning machine, the consumption power of the spinning cup is the largest, generally accounting for more than 50%.

The power consumption of the spinning cup is related to the diameter. In order to reduce power consumption after the increase, the diameter of the spinning cup can only be reduced.

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< p > from the yarn structure of rotor spun yarn, we know that there are many winding fibers on the surface of yarn, which has great influence on yarn strength, evenness and Mao Yu.

The longer the fiber length and the smaller the diameter of the spinning cup, the easier to form filament winding fibers.

When the speed of the spinning cup is raised, the diameter will be reduced, and the diameter of the spun yarn will not be able to spin extra fine count cotton yarn, especially the extra fine yarn over 60 or more.

This is because the yarn is usually made of 60 or more yarns, which is made of long staple cotton. The main length of cotton fiber is between 35~40 millimeters. Therefore, the number of spinning parts will be limited after the diameter of the spinning cup is reduced.

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< p > at present, the spinning number of < a href= "//www.sjfzxm.com/news/index_c.asp" > rotor spinning < /a > is generally in the range of 145tex (Ne4) to 10Tex (Ne60).

Because of the large power consumption, the spinning tension of large diameter spinning cups is relatively large, and because of the difference between the yarn quality and the small diameter spinning cups, spinning fine yarn is not cost-effective, so the spinning of low count yarn is of great benefit, while the small diameter spinning cup has higher opening speed and smaller diameter, and the condensing tank is relatively narrow. It is more difficult to spin the low count yarn, and the economic number of the spinning cup increases with the increase of the speed of the rotor, so the small rotor is suitable for spinning high count yarn.

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< p > therefore, when choosing the diameter of the spinning cup, not only should we consider the use of large diameter spinning cups, but also consider the economic number of spinning cups, otherwise it will not only be difficult to spin, but also the economic efficiency is not ideal.

-- netizen Ni string "/p".

< p > I think "small spinning cup can not spin low yarn," a href= "//www.sjfzxm.com/news/index_c.asp" > big spinning cup < /a > can not spin high count yarn "is not necessarily established, in fact, all kinds of branches can be spun.

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< p > high count yarn has large twist and good cotton distribution, and the production speed of the large spinning cup is low and the output is low.

If the speed is high, the weight of the spinning cup itself is large, and the centrifugal force generated by high speed spinning is also large. When spinning, when the tension and strength of the yarn are close, it is easy to break the head.

In addition, high spun yarn has small amount of cotton and low effect and poor evenness in the cotton cup, so it is necessary to use small spinning cups for spinning high count yarn, and vice versa.

-- netizen rotor spinning "/p".

< p > generally speaking, < a href= "//www.sjfzxm.com/news/index_c.asp" > spinning low yarn > /a > pursuit of high yield, while low count yarn cross section has more fiber root than high count yarn, so the twist design is relatively low in technology.

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< p > the bottleneck of rotor spinning output is the winding speed of the yarn (winding speed = spinning speed / twist). For example, the upper limit of the winding speed of the device is 160 m / min, and the yarn of spinning Ne7S is designed to be 400 twist /10 cm, and the maximum speed of the spinning cup can only be opened to 160 x 400=64000 rpm.

The agglomeration of rotor spun yarn depends mainly on the centrifugal force of spinning cup, and the centrifugal force is directly proportional to the diameter of the spinning cup. With the decrease of twist and the upper limit of winding speed, the spinning speed of the spinning cup decreases correspondingly. The consequence is that the cohesion of the fiber in the cup decreases continuously, resulting in the difficulty of spinning and the decrease of yarn quality.

Therefore, the spinning of low count yarns can only increase the centrifugal force by increasing the diameter of the large spinning cups, so as to ensure the necessary cohesion of fiber aggregation.

This should be the most important reason for the low spun yarn.

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< p > the same is true of spinning high count yarns with small spun cups.

Because the design twist of the high count yarn is generally high, to achieve the limit winding speed, there must be a high spinning speed, and the high speed operation of the large spinning cup will cause excessive centrifugal force and excessive load, which is not scientific in terms of technology and energy consumption.

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