China's cotton textile equipment needs to go to a

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Mei Ziqiang: China's cotton textile equipment should go to a new level

at present, the domestic cotton textile complete sets of new equipment have basically reached the international advanced level at the end of the last century and the beginning of this century. About 60% of the equipment of cotton textile enterprises are close to and reach the international level at the end of the 1990s. The domestic cotton textile complete sets of new equipment have basically met the requirements of the current upgrading and transformation of cotton textile enterprises

in recent years, due to the appreciation of the RMB, the rising cost of labor and raw materials, the shortage of funds and many other adverse factors, the cotton textile industry is facing great difficulties due to the breakthrough of the impact of relevant key technologies. The cotton textile enterprises and related equipment enterprises are facing severe challenges. The current international financial storm has intensified the competition in the cotton textile industry market. It is imperative to speed up the technological transformation of cotton textile and maintain the healthy development of the industry. What is the current situation of cotton textile technology and equipment with independent intellectual property rights in China? What is the focus of technological transformation in the future

based on years of development and research, the domestic blowing carding combine has entered the practical stage in the 1990s. According to the survey results of China Textile Engineering Society in 1999, compared with the traditional coiling process, the technical and economic effects of domestic blowing carding are mainly as follows: compared with the output, the labor force per ton of blowing carding process is reduced by 77%, the electricity consumption is saved by 9%~14%, the average cotton grade can be reduced by 0.5, and the yield can be increased by about 9%. Using the blowing carding process can also improve the working conditions and reduce the dust content in the workshop. As the floor area is reduced, it is beneficial for enterprises to adjust the production layout of workshops

according to statistics, by the end of 2004, there were 1400 blowing carding units in China, including about 300 imported equipment, covering about 37% of the national cotton spinning spindles at that time. In 2007, 272 sets of blowing carding units were added nationwide, of which 72 were imported, indicating that the heating temperature should be lower than the final heat treatment temperature. The continuous improvement of domestic blowing carding units basically keeps up with the development of international blowing carding unit technology and can meet the production requirements of enterprises. The performance of the JWF1204 carding machine produced by Zhengzhou Textile Machinery Co., Ltd. and the jwf1205 series carding machine produced by Qingdao Hongda Co., Ltd. has reached the international advanced level, but the wear resistance and service life of the supporting metal card clothing still fall behind the international advanced level

drawing frame the gap between drawing frame and international advanced level is mainly self leveling

according to the "Eleventh Five Year Plan", the proportion of combed yarn in China will reach 28% in 2010, but there is still a gap with the current requirements of structural adjustment. Domestic combers can basically meet the use requirements, and there is still a certain gap in key parts such as the overall cylinder

roving frame the overall level of iron gun free multi motor drive roving frame produced by Tianjin Hongda, Wuxi Hongyuan, Hebei Taihang and Qingdao universal has reached the advanced level of similar international products

spinning frame the gap between the spinning frame and the international advanced level mainly lies in the process performance and high-speed adaptability of special parts such as steel collars, steel coils, spindles, etc

the proportion of non knot yarn in China should be further improved. In 2007, 3768 automatic winders were added nationwide, indicating the urgent need of cotton textile enterprises to improve the proportion of non knot yarn. Based on the introduction of technology and cooperative production, Qingdao Hongda independently developed jwf1001 automatic winder, which has reached the advanced level of international well-known brands of the same kind and began mass production. However, metal grooved barrels, air splicers and electronic yarn cleaners are still supported by imports. Jwf1001 automatic winder and the domestic spinning automatic winder with collective doffing spinning cart have entered the production test stage

fine contact technology fine contact technology has entered the practical stage in the mid-1980s internationally. The direct connection of the two processes with the largest number of people and labor intensity in cotton spinning production not only ensures and improves the product quality, greatly reduces the number of people, and greatly improves the labor productivity, but also better solves the long-term difficult contradiction between spinning speed and spinning winding in spinning production, and greatly improves the production efficiency of ring spinning frame. Fine winding technology is the symbol of the development of cotton spinning production from traditional technology to modern spinning technology

shuttleless looms shuttleless looms have been basically eliminated in the world, and the shuttleless rate of looms in China's cotton textile enterprises is only 40%. From 2002 to 2005, China imported 65000 shuttleless looms, including about 50000 air-jet looms. 20983 shuttleless looms were imported in 2006 and 22689 in 2007, mainly air-jet looms. Cotton textile enterprises adjust the product structure, and the high-performance shuttleless looms urgently needed at present are mainly imported. The electronic jacquard device matched with shuttleless loom cannot meet the requirements of high speed

rotor spinning technology rotor spinning is the most mature and successful new spinning technology so far. In the world, the fully automatic rotor spinning machine has reached a high level, and is developing in the direction of improving yarn forming process performance, energy saving, multi spindle and so on. Domestic semi-automatic rotor spinning machines have been mass produced by many enterprises. However, the full-automatic rotor spinning machine is still in the trial production stage. High speed spinning cup is still a weak link

compact spinning technology compact spinning machines have been produced by many enterprises in China and can basically replace imports. There are about 2million to 3million spindles of compact spinning in the country, which is still developing. The second is Africa and the Middle East. The key is to develop and produce products that can give full play to the advantages of compact spinning and achieve better economic benefits

the quality and process performance of equipment and special parts, such as metal needle cloth, cots and aprons, steel ring steel coil, spindle cradle, combed cylinder, rotor spinning special parts, automatic winding metal groove drum, air splicer, electronic jacquard device of shuttleless loom, are still different from those of similar products of International well-known brands, affecting the overall level of domestic textile equipment

the gap between the domestic complete set of new cotton spinning equipment and the international advanced level is mainly reflected in the degree of automation, production efficiency, stability and reliability of equipment operation. According to the "steel essentials of the national medium and long-term scientific and Technological Development Plan", "several opinions of the State Council on accelerating the revitalization of the equipment manufacturing industry" and "steel essentials of the technological progress and development of the textile industry", the "new generation of textile equipment" proposed by the China textile machinery and equipment industry association has been included in the national science and technology support plan. The development of a new generation of cotton textile equipment has been gradually put into production, which will greatly help to improve the quality of China's cotton textiles, improve the labor productivity of textile production, reduce product costs, and enhance the competitiveness of textile products

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