Miu Dingshu, Senior Engineer of Suzhou Textile Engineering Society

China Textile: What do you think about the main advantages and disadvantages of domestic and imported machinery?

Miu Dingshu: Foreign textile manufacturing industry still occupies highland,with purposes of high-tech, digital intelligent,high value-added, as well as environmental
protection and energy saving to develop high-end products. Based on the global service network system, the Ethernet realizes fast, reliable online monitoring and
real-time transmission of a large amount of data, and precise control and supervision of key quality parameters, optimizing high performance of textile machinery.

In recent years, domestic textile machinery enterprises make great progress in innovative design and fine manufacturing, especially for private enterprises with many “dark horses”, and break the foreign monopoly in high-tech to meet the requirements of high-tech weaving special equipment at national strategic level. With the transformation of domestic textile industry chain from disordered production mode to order one, new spinning equipment can meet the requirement of big ration, high speed, high efficiency, and low energy consumption, and especially the change of varieties and adaptability can meet the market demand. It makes great breakthroughs in R&D of high-end textile machinery,development of intelligence and automation,and single connection, as well as the development and application of high-end equipment with high performance.

Disadvantages: There is a wide gap with foreign machinery in equipment stability,failure rate, service life and so on,and even in the several times of run-in period of new equipment, which exists various potential problems of hidden danger,reliability and stability, etc.. Actual speed is not ideal, such as air-jet loom, with prototype speed of 1000~1200rpm, but actual speed of 550~700rmp.

The reasons are as follows: mechanical imitation of foreign equipment components,without full understanding of performance requirements, and the key components of poor equipment; serious wear, big noise and high failure after speeding-up; the need of more efforts in fine processing,as well as longer machine and heavier load with increasing wear; high electrical fault will appear in the run-in period with improper transducer, encoder, sensor, motor and others; lack of related techniques and expert system can’t realize long-term
stability of the process.

China Textile: What are the future trends of textile machinery? What are the new features of the equipment of spinning, weaving and others?

Miu Dingshu: The general trends are production patterns of refinement, intelligence,automation, environmental protection and resource-saving, and sustainable business methods with high quality, brand and diversification of varieties.The level of spinning equipment increases rapidly, with non twist, non joint,and non shuttle, continuity of single machine,
low energy consumption and low fault, as well as automation, intelligent,high speed and network as the development direction of the textile technology. It will be normal for spinning equipment with automation,intelligent and network, and the representative siro spinning and compact spinning frame adopt a series of advanced elements, including modular design, electronic drafting, electronic lifting, energy saving motor, and energy saving spindle, roller without mechanical wave and high speed ring-traveller, and actual speed of
over 20 thousand rpm/min at the international advanced level. Under the premise of high-speed development, it pays more emphases on personalization, marketization, intellectualization, modularity and interchange of parts for weaving machine. It can achieve a higher capacity and more efficient use of resources, by its innovative technology, online intelligent control and intelligent processing technology, optimized design components with aerodynamic and more efficient technology.

China Textile: What are the main reasons for the deficiency of equipment stability and reliability of domestic textile machinery? What aspects need to be strengthened, if domestic textile machinery and imported equipment compete in the international market?

Miu Dingshu: Compared with foreign equipment, domestic machinery is in a vicious circle, with body shaking, serious wear, noise, high energy consumption, low efficiency and poor quality, if the speed is increased. Weak links still exist many problems, such as MTBF, runningin period, service life, the consistence of processing precision, etc..

There is still a big gap in the depth of R&D, market sensitivity and concept, so it is necessary to transform from imitation to creation, from speed to quality, from price-base to market-orientation. Textile machinery should speed up the adjustment of strategy with breakthrough, shorten the gap between international counterpartsin the design, material selection, fine processing, technology, heat treatment, assembly debugging and so on, especially for the reliability and low failure rate, which must integrate the concept of zero
fault in the design, and calculate the cost of reducing life cycle of products, including special basic parts, supporting equipment, as well as break inherent structure limitation of traditional equipment, basic materials and processing, and equipment configuration.

China Textile: Will you participate in textile machinery exhibition this year? If so, what are the main purposes? Any harvest?

Miu Dingshu: I look forward to seeing the textile machinery. There will be many highlights under the background of market adjustment and supply front reform. It’s expected for products with low fault and energy-consumption, high capacity and quality, competitive products with adaptability. It is obvious that textile machinery enterprises have improved a
lot with tireless efforts. There will be lots of surprises in the original, intelligent and personalized equipment.

China Textile: Do you have any suggestion or advice on the future development of the domestic textile machinery?

Miu Dingshu: I hope that our country could be real manufacturing power of textile machinery to learn the qualities in German cultural elements and abandon the utilitarian business practices. We should create world-class textile equipment with advanced innovative ideas, new craftsman spirit and new structure concept, as well as more independent core technology, original technology and intellectual property rights to accelerate the realization of “made with wisdom” from “made in China”.

The saturation of spindles makes textile machinery improve design level with the core technology of networking and cloud computing, and reduce management cost by remote monitoring of Web, PC and mobile phone. But as a tool, Internet is on the basis of high performance and high reliable equipment, and overall equipment level of China’s textile enterprises
is far behind foreign ones, so it should be implemented in phases without speculation.

Without real intelligent spinning line, it must implemented self diagnosis ans self repair to realize complete intelligent.


Prof. Lin Ziwu,Wuhan Textile University

China Textile: What do you think about the main advantage and disadvantage of domestic and imported textile machinery?

Lin Ziwu: The main advantage of the domestic textile machinery is low price, which can meet the needs of enterprise production, with convenient supply of
machine parts and timely after-sales service. In spite of the great improvement of domestic textile machinery in automation, stability and reliability, there is still a certain
gap with the imported textile machinery.

Therefore, from the comprehensive point of view of engineering economic domestic textile machinery can’t match imported one in terms of employment and high quality and yield.

Here is an example. Two years ago, I was invited to Kotawa (Xiangyang) Textile Co., Ltd. to participate in selection and demonstration of first-stage project (30 thousand spindles) of the new 100 thousand spindles of cotton spinning; with analysis of various internal and external cases, many experts and business executives finally selected 30 thousand sets of complete spinning equipment of Rieter Group, with high degree of automation, stable and reliable performance, and less maintenance cost, rather than the best domestic equipment. And also low cost of raw material consumption and low labor provide a reliable guarantee for high quality and low consumption, while the price is only 23% higher than the best similar one in domestic.

China Textile: what are the future trends of textile machinery?

Lin Ziwu: The general trends of textile machinery are short process, modular structure and intelligentized operation, less labor and unmanned machining. Here is a brief look of cotton yarn production line.

Different levels of cotton bags enter the field by intelligent identification conveyor belt → blending cotton flowing through many efficient foreign fiber clearing device (not in dependent area, but attached to the pipe like condenser) → flexible and strong shaking to open cotton (replace the current porcupine opening with minimum damage to fiber and short fiber in cotton layer, to greatly reduce the burden of carding in the subsequent process)→ intelligent carding machine to output non-single sliver in accordance with the length of fiber (longer fiber can be input drawing process as cotton semi-combed sliver, with no need of combing) → nonsingle sliver to efficient and intelligent lap former by automatic conveyor (can be separately combined according to the length of fiber sliver) → intelligent combing → intelligent drawing frame → drawn sliver to roving machine by automatic conveyor → automatic transmission to spinning machine (intelligent spinning machine with double automatic machines of automatic repiecing and tieing) → automatic winder.

All processes are closely linked, making an expected whole process with current blowing-carding, roving-spinning winder.

China Textile: Will you participate in the textile machinery exhibition this year? Big harvest?

Lin Ziwu: Yes, I will. Textile machinery exhibition is a platform for the latest achievements of human textile culture and technological process in physical form, making people directly feel social progress and development. I can not only enjoy the new generation of textile machinery, but also hear the advanced footsteps of modern textile under the background of Chinese Dream, which is the main purpose to participate in the exhibition.

I can obtain great harvest at each exhibition, main of which can be divided into three aspects. First, to understand the latest development in technology of domestic and foreign textile machinery, and to get textile information on the CD and paper, which plays an important role for the demonstration in textile industrial park of cotton and wool with 2 million spindles in more than 30 years. I have classified these information into eleven parts of cotton and wool, knitting, dyeing and printing, garment, tech-textile and so on, and scan valuable paper information into electronic text, which is not only used for the demonstration, but also as the material for the 13 books I will edit. I really cherish the information.

Secondly, I get to know many professions in research and development of dozens of well-known domestic and foreign exhibitors, and it has a positive role in improving my profession knowledge and academic level to communicate with them face to face. I have followed with exhibitors to visit, learn and research in their enterprises, learning many innovation and research patterns and methods. I also have the opportunity to directly explore a development scheme and seek the breakthrough of innovation paradox with designers, which not only fuses everyone’s wisdom, but also makes me express my personal insight. Enterprises attache great importance and welcome to these insights, which makes me involved in the innovation invisibly.

Thirdly, I make friends with many technical personnel of textile enterprises, and deeply understand the successful experiences and shortcomings of the use, maintenance and repair of the equipment, which is beneficial to promote the technological progress of textile processing enterprises.