Development Prospect Of Domestic Compact Spinning Technology

discuss

Development and research direction.

The present situation of the development of the agglomerate spinning technology is expounded from two aspects of the technical and application fields, the existing problems are analyzed, and the future research direction is put forward.

It is pointed out that we should further strengthen the research on the technical advantage, variety adaptability, application scope and market positioning of the agglomeration spinning, expand the application scope and scale of the agglomeration spinning, improve the investment benefit, strengthen the development and research of the spinning special parts, stabilize and improve the product quality and reduce the cost consumption of the accessories; develop the research of the new fiber and yarn structure, expand the application field of the compact spinning fiber, develop the new varieties, and improve the production efficiency, develop the fusion technology of the new spinning method, improve the advantages of the yarn, improve the yarn quality and the use performance, and promote the further development of the agglomeration spinning technology.

1 development of special technology for compact spinning

Compact spinning will increase the material consumption of negative pressure suction grid ring, cots and aprons.

In recent years, special research on compact spinning mainly embodies the characteristics of low cost, long service life and simple structure.

1.1 compact spinning technology

The grid ring and other related components are the basic components to ensure the performance of compact spinning, but the wear and tear of the grid ring is large.

Many domestic manufacturers have made significant improvements in the structure, materials and processing technology of the condensing components such as air suction devices, grid rings, negative pressure pipes and air suction components.

Ningbo Dechang precision textile machinery Co., Ltd. combines the suction air hose and suction hose of the ring spinning machine with the suction hose and the centralization spinning pipe together, and obtains a simple suction device. The Wujiang Ilan Ji Textile Co., Ltd., coated with wear-resistant material on the surface of the grid ring, can effectively enhance the performance of the grid ring.

Changshou City Schindler Powder Metallurgy Co., Ltd. has formed the warp and weft yarns by blending technology, which improves the strength, antistatic ability and service life of the grid ring, and improves the surface smoothness of the yarns. The Nine Dragons automotive equipment Co., Ltd. of Wuxi handles the negative pressure pipe by using the negative pressure tube, so that the surface of the negative pressure tube of the compact spinning has antistatic performance, prolongs the service life of the compact spinning negative pressure tube, and reduces the abrasion of the grid to the surface of the negative pressure tube. The South China University has applied for the patent of "a dust collecting and suction component for compact spinning", so as to solve the problems of poor tightness, poor environmental adaptability and easy sticky clogging of the existing air suction components.

1.2 compact spinning cleaning device

The domestic compact spinning device has made significant progress in reducing energy consumption and cleaning.

Jiangyin mayor Textile Technology Co., Ltd. has applied for the patent of the "compact spinning and cleaning device". Its core is to start the work of small motor and cleaning cotton blower when the cotton wadding accumulates to a certain extent, so as to achieve the purpose of cleaning the cotton batting and improve the production efficiency. Jiangnan University provides a new support method for the compact spinning roller, which does not need to replace the whole cradle, so that the cost of the pformation is reduced, and the structure is simple, and the installation is convenient and reliable.

1.3 service life of compact spinning parts

Jiangyin Huafang new technology research Co., Ltd. has applied for the patent of "adjustable wear resistant compact spinning special shaped suction pipe".

It only needs to adjust the suction hood on the suction pipe, which reduces the use cost and management cost of the enterprise.

Lu Guiqing has invented a new type of practical spinning device for eccentric traverse of the compact spinning machine, which uses the wiper to adjust the running position of the yarn to increase the area of the friction part of the yarn, so as to increase the life of the rubber roller and rubber apron and reduce the loss by half. An additional air guiding baffle plate is installed above the compact spinning zone of Jiangnan University. When the density of the yarn is changed and the material is changed, the throttle flow guides the position of the baffle, thus effectively improving the utilization ratio of the wind pressure and the energy consumption, and greatly reducing the energy consumption.

Rizhao Yuxin Power Co., Ltd. applied for the patent of "compact type compact spinning device", which made the grid ring not rotate directly on the surface of the negative pressure tube, prolonging its service life. The Jiangnan University and Xie Chunping invented the hollow roller compact spinning device, and eliminated the mesh loss, the pinion, the rubber roll box, the guide cots and the bearing, and reduced the maintenance cost; the Shandong Hualai new material Polytron Technologies Inc designed a yarn roller roller press spring for the spring cradle compact spinning frame, and the leaf spring played an auxiliary role in boosting the top cots of the compact spinning, increased the grade of the rubber roller, and reduced the cost of the compact spinning cots.

1.4 testing tools for compact spinning parts

Grid ring is one of the core components of compact spinning equipment. Its size and surface inconsistency will result in poor consistency of yarn quality.

The inner diameter of the grid ring is too large, which can cause the tension to be too small.

Too small may lead to difficulty in installation of grid circles. Jiangnan University has applied "a device for measuring the inner diameter of the grid ring of compact spinning", which provides a measuring device for the inner diameter of the grid ring. The Jiangnan University has proposed a new image acquisition and processing method for grid ring quality inspection, which is used for the machine vision inspection system of the grid ring quality, avoiding the visual damage caused by the long-term work of the inspectors. Jiangyin Huafang new technology research Co., Ltd. has applied the "compact spinning negative pressure network monitoring system" to achieve safe and effective remote monitoring and improve the management efficiency of the enterprise.

2 development of application areas

2.1 spinning range

The investment and operation cost of compact spinning is high, mainly for producing high added value yarns.

The new spinning technology and new fibers can be combined organically, which can "strengthen strengths and circumvent weaknesses, complement each other", and develop new yarns with market demand and high added value of products.

Compact spinning is used for knitting, greatly reducing the breakage rate of knitting yarn.

The application of compact spinning technology to yarn dyed fabric can reduce the zonal coarse section and improve the cloth surface effect.

Many enterprises use compact spinning technology to produce raw materials such as hemp, photoelectron polyester, cold fiber and other raw materials blended yarn, which improves product functionality and fabric style.

Xishuangbanna hemp Agricultural Technology Co., Ltd. uses hemp fiber and cotton blended into hemp blended yarn through compact spinning technology. The Shandong Lian run new Mstar Technology Ltd has applied "a Siro compact spinning crystal cotton, long staple cotton blended yarn and its spinning process" to solve the difficult problem of crystal cotton spinning and expand the market space of crystal cotton.

Danyang city Dan Sheng Textile Co., Ltd. has produced bright, high-grade, cool functional bacteriostatic health care functional yarn using the compact spinning equipment. The Shanghai mercury home textile Limited by Share Ltd has published "a super soft spinning spun hemp fiber and cold fiber yarn and its preparation method"; Jiangsu gold Textile Knitting Co., Ltd. used the compact spinning to produce fine count slubby yarns, overcome the shortcomings of the existing fine count slubby yarn with low strength and long hairiness, and Jiangsu Danyang wool spinning Co., Ltd. used the compact spinning technology to realize the fine spinning and single weft knitting of the wool spinning yarn.

2.2 yarn quality

The technology of domestic compact spinning is becoming more and more mature, and the yarn quality has been continuously improved.

Liuzhou Fangda textile machinery and Electric Co., Ltd. applied for "spinning fine spinning top pin". The device improves the yarn quality by shortening the length of the floating zone and increasing the additional friction force in the front part of the floating area. Nantong Huaqiang cloth industry Co., Ltd. has disclosed a "negative pressure type precise positioning device for the profiled tube spinning", which removes the gap between the dustproof cover and the special tube by lengthening the screw of the dust cover bracket, and controls the deviation of the special-shaped tube, so as to ensure the quality of the product.

A "U" shaped air guiding plate makes the air flow mainly collect fibers from both sides and increase the flow velocity in the gathering area. It prevents the single fiber from gathering and entering the yarn body due to diffusion, and reduces the spinning triangle area to the greatest extent, thus reducing the harmful hairiness. The Tongling xofi new material Co., Ltd., through the wetting fiber, which is connected to the inner surface of the tube through the surface guiding groove of the wet pipe outer wall, eliminates the electrostatic repulsion between the fibers, increases the cohesion between the fibers, reduces the yarn hairiness, and reduces the yarn hairiness, and improves the product quality. Donghua School of Li Nan and other uses a new type of compact spinning, which makes the yarn strong and wear-resisting performance improved. Jiangnan University is loading above the compact spinning area.

2.3 compact spinning innovative technology

Rapid response to occupy the market in order to win customers.

The same compact spinning machine can produce different kinds of yarns at the same time and complete proofing quickly.

The East Flying Horse DTM159D 8 compact spinning frame has the ability of producing siro spinning, Bao Xinsha and slub yarn. It adjusts the drafting equipment according to the raw material, roving quantitative and yarn structure characteristics, and has the ability of producing different varieties at the same time. It is suitable for scientific research teaching, spinning theory research and spinning factory sample spinning.

Super draft is one of the main means to shorten the spinning process. It has remarkable effect and good development prospect in reducing production cost.

Yancheng Mu Rui textile limited liability company has disclosed "a four roller super draft drafting core spun yarn device". The mechanism has the effect of compact spinning and has effectively improved the yarn quality while achieving the super draft. The Jiangnan University has improved the traditional fiber ring spinning by adopting the narrow groove negative pressure roller instead of the middle and rear rollers to effectively enhance the fiber agglomeration effect, and the total drafting multiplier can be increased to more than 250 times.

On the basis of the original models, Shandong ZFA502 and ZFA506 series cotton spinning frames of the same large spinning machine are directly spinning spun yarn with four rows of rollers, and the roving process is eliminated.

2.4 new spinning fusion technology

The combination of compact spinning and other spinning technologies has further improved the yarn performance. It is an important feature of the development of compact spinning in recent years.

Super Imitation cotton polyester knitted products are easy to pilling and use super compact cotton and siro spinning technology to produce super Imitation cotton products. The product has the advantages of less hairiness and better pilling performance. Danyang Dachen Textile Co., Ltd. has achieved the goal of reducing the cost of fancy yarn through the comprehensive application of three technologies, namely, the AB spinning technology, the compact spinning process and the bamboo yarn spinning process, and obtained the fabric of rough snowflake effect.

The spinning device forms a compact spinning line under the action of three air guiding grooves and grid circles on the manifold of the agglomeration device. This method omits the characteristics of low energy consumption and high production efficiency in the production of traditional ply yarn. The Jiangnan University applies the technology of compact spinning and slub yarn to the development of cotton and spandex blended yarn, cotton and sky bamboo fiber blended yarn, cotton and polysulfonamide blended yarn, and improves the quality and grade of yarn; the Changde cradle Textile Machinery Co., Ltd. cradles branch by humidifying, heating and ironing the front jaw output bar, resulting in greatly reduced yarn hairiness and improved yarn softness. Jiangyin Huafang new technology research Co., Ltd. will feed three roving parallel to a three hole bell mouth, followed by the roller, the central roller, the front roller and the cluster.

3 existing problems

3.1 misunderstanding in application of varieties

In the application of compact spinning technology, there is a general problem of high expectation for compact spinning. One sidedly thinks that compact spinning is suitable for all varieties and neglects the positive effect of yarn hairiness.

Towels and all kinds of napped fabrics such as fleece fabrics are not suitable for compact spinning. Hairiness is more conducive to capillary effect of moisture absorption of fabrics, increasing sizing rate and dyeing and dyeing rate, improving fabric hygroscopicity and moisture conductivity, increasing hand softness and improving fabric wearability.

3.2 technological innovation is not enough.

Domestic patent research mostly aims at improving one technology, and has completely independent proprietary technology, and has not formed an independent technological system, patent protection consciousness and product characteristics.

The traveller is a big bottleneck of the domestic spinning technology. The speed of the domestic steel wire ring and the compact spinning is still not matched.

3.3 production management is not suitable.

In today's relatively scarce labor force, the textile industry is facing increasing pressure on labor costs.

High energy consumption and much employment are the problems in the pformation of China's compact spinning.

Short lint and dust are easily adhered to the inner surface of the mesh ring, which affects the aggregation effect of fibers and increases the yarn hairiness. After a period of time, the mesh rings are blocked by cotton wax, short linen and dust. The use of the grid ring is too long and the surface will be fuzzed. If the oil is not properly supplied by rollers or cots, it will overflow the grid. Regular inspection and cleaning will increase the management difficulty.

Therefore, compared with traditional ring spinning, compact spinning has higher requirements for production management. In a sense, there is no fine quality spinning without fine management.

Some spinning enterprises, due to the fact that the related management of compact spinning has not followed up and run poorly, the products fail to meet the quality requirements of high-grade yarn and affect the improvement of investment efficiency.

4 research directions and trends of compact spinning technology

With the application of new technology and special parts, the development of special component detection technology has made continuous development of compact spinning technology.

However, problems such as misunderstanding in application, lack of technological development and innovation, inadequate research on innovative technology, and incompatibility of technology management in compact spinning are still troubling the progress of compact spinning technology. Only in the face of existing problems, pioneering and innovating consciousness, and increasing technological test, can we make great progress in compact spinning technology.

4.1, strengthen the application research of compact spinning varieties.

We should further strengthen the research on advantages, adaptability, application scope and market positioning of compact spinning technology.

Correctly evaluate the effect and pros and cons of yarn hairiness, and provide reliable decision-making basis for product upgrading and equipment pformation.

So that enterprises can be combined with their own reality, according to market demand and product positioning, rationally configure the scale of compact spinning, and choose a reasonable type.

We should fully understand the characteristics of compact spinning production and intensify meticulous management so as to achieve good quality upgrading effect and higher technological pformation investment return.

4.2 actively carry out new specialized research

Technology innovation around spinning parts is an important aspect to promote the development of compact spinning technology.

The development of anti static grid ring and wear-resistant grid ring can enhance the strength, antistatic ability and service life of the grid ring. Through the treatment of the compact spinning negative pressure tube, the surface of the negative pressure pipe of the compact spinning can be provided with anti-static performance, and the wear of the grid ring on the surface of the negative pressure tube can be reduced, and the surface finish of the yarn can be effectively improved.

However, there is less research on the use of grid ring and negative pressure tube, and the research on new equipment life is not enough. The application of special component detection has not been promoted, resulting in the high CVb of the yarn gathered, which has affected the quality of compact spinning.

Therefore, the research on related components is the focus of next research.

4.3 actively research new fiber yarn structure

The textile industry 12th Five-Year development plan pointed out: vigorously develop new textile materials products, to the end of 12th Five-Year, chemical fiber accounts for 70% of the total fiber processing, we must speed up the development of differential fiber, high-tech fiber and bio fiber technology and industrialization.

The application of compact spinning in new fibers must be supported by relevant theories.

But there are few studies on yarn structure at home and abroad.

Yarn structure is an important factor to determine the yarn's internal properties and appearance characteristics. However, the arrangement of fiber in yarn and the degree and mode of fiber pfer cause the difference of yarn structure. However, the research in this field is very inadequate.

In the traditional ring spinning, the width and the twisting of the whisker are almost simultaneously carried out. The compact spinning is to shrink the width of the bar first, then twist it and proceed step by step.

Further study of the theory of the yarn structure of compact spinning can provide some reference value for reasonable selection of raw materials, optimization of yarn structure, formulation of a perfect spinning process and further study of the wearability of fabrics.

4.4 in-depth study of the drawing process of compact spinning.

Due to the relatively high investment and operation cost of compact spinning equipment, it is necessary to develop compact spinning equipment with less labor and high production efficiency.

At present, the spinning process of traditional ring spinning is mostly used in compact spinning.

The agglomeration of compact spinning can not only greatly reduce yarn hairiness, but also improve yarn evenness and strength to a certain extent. This creates a better condition for enlarging the drawing ratio of compact spinning and using coarse weight to quantify large draft.

In addition, concentrated yarn is used for the production of higher grade fine count yarn fabrics, and the raw materials of high degree of finness are used.

Therefore, the characteristics of draft configuration should be different from traditional ring spinning.

We should increase the technical research of the matching spinning process of the compact spinning, and develop a compact spinning device suitable for large drafting technology and high production efficiency and supporting production processes, so as to improve the economic efficiency of compact spinning.

4.5, based on the positioning of compact spinning products, developing fusion technology.

The textile industry 12th Five-Year development plan pointed out: to 2015, the cotton spinning compact spinning should reach 20 million ingots, and the proportion of the new spinning and weaving technologies such as composite spinning, siro spinning and embedded spinning should reach over 60%.

The integration of various new spinning technologies can achieve good results of "advantages and disadvantages, complementary advantages", and the quality of yarn and fabric wearability are greatly improved.

For example, the method of combining spinning technology with Siro spinning, core spinning and other spinning technology is used to produce concentrated Siro yarn and concentrated core spun yarn. The combination of the Siro compact spinning process and the twisted spinning low torque spinning technology produces high-grade knitting smooth soft yarn.

Strengthening the research of integrated spinning technology can further expand the application scope of compact spinning.

5 Summary

Compact spinning technology is an important aspect to promote the development of China's spinning technology.

A correct understanding of the development of China's compact spinning technology, analyzing the existing problems, insisting on technological innovation and exploring the right research direction are of great significance for promoting the continuous and healthy development of domestic compact spinning technology.

First of all, we should further strengthen the research on advantages, adaptability, application scope and market positioning of compact spinning technology.

It can provide reliable decision basis for enterprise equipment pformation and upgrading of product quality, so that enterprises can combine their own realities and plan reasonable allocation scale and reasonable selection according to market demand and product positioning.

We should fully understand the characteristics of compact spinning and strengthen the management of refined and refined products so as to achieve good quality upgrading effect and high technology investment.

We should further strengthen the research and development of spinning specialized parts, stabilize and improve the quality of products, reduce the cost of spare parts, develop new fiber and yarn structure research, expand the application fields of compact spinning fibers, develop new varieties, study the large draft process of concentrated yarns, improve production efficiency, develop the fusion technology of new spinning methods, complement each other, complement each other, improve yarn quality and fabric wearability, and promote the further development of China's compact spinning technology.