Recently, Ji Heju, Chief Engineer of Qingdao Dongjia Textile Machinery (Group) Co., Ltd., was awarded the honorary title of "China Textile Master Craftsman" jointly by the China Textile Industry Federation and the China Finance, Trade, Tobacco and Light Textile Union. Since joining Qingdao Jiaonan Textile Machinery Factory (predecessor of Qingdao Dongjia Textile Machinery (Group) Co., Ltd.) in 1984, Chief Engineer Ji Heju has been focusing on the design and research and development of textile equipment sorting machinery for forty years.

Inheritance and Innovation - Remembering the Chief Engineer of Ji Heju, Dongjia Group, known as the "Chinese Textile Master Craftsman"

Qingdao Dongjia Textile Machinery (Group) Co., Ltd. has a complete mechanical manufacturing process for processing and assembly, and is currently a professional textile sorting machinery manufacturing enterprise with a large production scale and a wide variety in China. We mainly produce and operate five series of nearly 100 specifications of products, including complete sets of cotton spinning carding equipment and pre spinning unit equipment, woolen and semi fine spinning carding equipment, chemical fiber carding and non-woven fabric complete sets of equipment, special fiber carding and blending carding equipment, and shuttleless weaving machines. Our carding machinery products rank among the top in terms of production and sales volume. The company's products were first exported to Bangladesh in 1996. After nearly 30 years of foreign market development, the products have been exported to more than 30 countries and regions including Southeast Asia, South America, Africa, Central Asia, and Eastern Europe, with foreign sales accounting for 30%.

Qingdao Dongjia Textile Machinery (Group) Co., Ltd. has won numerous awards for its outstanding performance in the field of textile machinery. The company's technology center is a national level enterprise technology center, China Textile Machinery Industry Cashmere Sorting Joint Machine Product Research and Development Center, Shandong Engineering Technology Research Center, and Shandong Industrial Design Center; The company has successively won the National Textile Industry Quality Award, the leading backbone enterprise of Shandong Province's high-quality textile machinery production base, and the Shandong Province's technology innovation demonstration enterprise.

Behind these achievements is the hard work and wisdom of the company's technical talents, and Ji Heju is an outstanding representative among them. Ji Heju is good at tackling technical problems, especially in the research of special fiber combing. He is a leading figure in enterprise technology and has made outstanding contributions in product combination, serialization, modularization and automation, intelligence, completeness, high efficiency, low consumption, and flexible combing. In recent years, more than 200 technical backbones and high skilled talents have been trained successively. After 40 years of unremitting research on textile equipment sorting machinery technology, its innovative technological achievements have been granted 158 national authorized patents, including 36 international and domestic invention patents; Received 1 second prize for national scientific and technological progress and 13 provincial and ministerial level scientific and technological progress awards.

Inheritance and Innovation - A Record of the "Chinese Textile Master Craftsman" Dongjia Group's Ji Heju Chief Engineer

Solve the problem of fiber combing and lead the market trend

By conducting in-depth market research and sorting out different raw materials used by different customers, we aim to provide fast production services and simple variety replacement, shorten manufacturing and supply cycles, reduce parts supply and costs, while improving efficiency. Ji Heju believes that customer confusion and pain points are the direction of product development. When customers reported that fiber damage in traditional carding machines was a "headache", Ji Heju visited and researched multiple customers, conducted on-site inspections of fiber production during equipment operation, consulted relevant technical data for repeated deduction, and calculated the speed of each component in detail. The test results ultimately met the standard design requirements. He utilized the respective advantages of the roller combing of wool spinning and the cover combing of cotton spinning, combined with novel and reasonable structural innovation and needle cloth research, to invent a patented technology product applied to new spinning equipment, improving spinning efficiency and reducing fiber damage rate by an average of 7%.

With the changes in the market, the demand for special fiber products is increasing day by day. Jiheju has set its research and development goals on special fiber semi spun carding equipment, pioneering the development of new and multi-component fiber flexible carding, solving the carding problems of some special fibers such as cashmere, bamboo fiber, chitosan, seaweed, aramid, silk, kapok fiber, etc., and realizing the industrialization of high-quality semi spun yarns of special fibers. A domestic customer has purchased equipment from the company four times and placed an order for 60 units. Seeing that his carefully developed results have been recognized by customers, Ji Heju is even more confident. Through in-depth research on the equipment, he has made the machine suitable for good combing of fiber lengths ranging from 8mm to 88mm, and for fine spun yarns ranging from ultra short fibers such as towel yarn and recycled cotton to ultra long fibers. Especially in recent years, the spinning of long fibers has gradually become a trend in the market. Traditional carding machines and carding machines are difficult to achieve ideal long fiber combing. The new equipment led by Jiheju's technical team has achieved fine combing of 88mm long fibers, which not only preserves the length well but also has almost zero hair particles. This product has won the Patent Award and the Second Prize for Scientific and Technological Progress from the China Textile Industry Federation. At present, Ji Heju is tackling the fine combing of fibers with a length of over 120mm, which is his new technological goal.

Inheritance and Innovation - A Record of the "Chinese Textile Master Craftsman" Dongjia Group's Ji Heju Chief Engineer

As a technology leader in the enterprise, Ji Heju spent over 20 days at the user's production site to improve the design and trial production of glass fiber non-woven fabric complete sets. Despite the hot summer weather and the itchiness of glass fibers, he carefully observed and studied the problem of difficult fiber transfer during the sorting process by lying next to the machine. After repeated thinking, he changed the size of the leak, adjusted the entrance angle, and accelerated the transfer speed, ultimately solving the problem of transfer. After successful testing, this production line quickly entered the market and created good economic benefits for the enterprise.

Ji Heju believes that textile combing is a systematic project that is related to product design, raw material loosening pretreatment, impurity removal, and health preservation. Therefore, in addition to structural innovation in unit machine design, the key is how to achieve full process equipment optimization, which is his key research topic. He innovatively improved the precision spinning and uniaxial flow of cotton spinning and applied them to the cashmere loosening process, increasing the efficiency of impurity removal by 50% and greatly reducing the total number of combing passes. To study the finished product indicators of cashmere combing equipment, various process parameters are repeatedly tested. Sometimes, for a single data, he can stay in the workshop production site for 24 hours continuously. He researched and streamlined the process, systematically optimized the needle cloth, speed ratio, spacing, feeding amount, workshop temperature and humidity, and the angle and working surface of the feeding board, ultimately overcoming the problem of low yield, high consumption, and significant damage to cashmere for many years. In recent years, Jiheju Innovation's intelligent combination cashmere automatic circulation combing equipment has obtained multiple national invention patents, reducing labor by 50%, improving combing efficiency by 30%, and reducing fiber damage by 2%.

Inheritance and Innovation - A Record of the "Chinese Textile Master Craftsman" Dongjia Group's Ji Heju Chief Engineer

Ji Heju has no holidays all year round, and he leads the company's technical personnel to continuously innovate and make progress. The industry university research cooperation project he participated in, "Construction and Practice of a Continuous and Progressive Mechanical Research and Craftsmanship Training System with 'Three Connections, Four Collaborations, and Five Connections'," won the second prize of Shandong Provincial Teaching Achievement Award. The collaborative project "Key Technologies and Applications for Efficient Utilization and Reduction of Cooling Fluid in Quasi Dry Manufacturing Process of Parts" won the first prize of Science and Technology Progress Award of China Business Federation. The collaborative project "New and Efficient Combination Cashmere Sorting Equipment" won the second prize for scientific and technological progress from the China Chamber of Commerce.

Forty years of ingenuity and innovation

I have been working in this industry for 40 years, mainly researching various fiber combing equipment, including wool spinning, cotton spinning, linen spinning, non-woven fabrics, and special fiber combing equipment. Combing is the "heart" of spinning, and my biggest feeling is that I love this industry and profession, so I can focus on and persistently innovate, "said Ji Heju, Chief Engineer of Qingdao Dongjia Textile Machinery Group Co., Ltd. and Director of the Special Fiber Combing Laboratory, describing his understanding of the" craftsman spirit ".

Inheritance and Innovation - A Record of the "Chinese Textile Master Craftsman" Dongjia Group's Ji Heju Chief Engineer

Ji Heju is from Qingdao, Shandong. After graduating from Qingdao Machinery Industry School in 1984, he went to Qingdao Jiaonan Textile Machinery Factory (predecessor of Qingdao Dongjia Textile Machinery Group), where he applied what he learned and began to engage in the design and development of textile sorting machinery products. From 1984 to present, Ji Heju has been researching textile equipment sorting machinery and its complete sets of equipment for nearly 40 years, witnessing the rapid development of the textile industry after the country's reform and opening up. During this period, Ji Heju presided over, participated in, and completed the research and development of over 60 new textile machinery products, including 3 national science and technology research projects, 2 national torch plan projects, and 18 national level new products. The combination combing machine he participated in designing for the national "Seventh Five Year Plan" scientific and technological research project won the second prize of National Science and Technology Progress Award. In 2010, Ji Heju presided over and participated in the national "Tenth Five Year Plan" scientific and technological research project "Research on Combination Textile Sorting Machinery". The combination series carding machine project led by him won the second prize for scientific and technological progress in Shandong Province.

After 40 years of working in textile equipment sorting and mechanical technology, Ji Heju often says that knowledge needs to be accumulated and updated. Only in this way can we continuously improve ourselves, keep up with the progress of the times, and develop more high-quality products. When talking about his ideal, Ji Heju said, "Concentrate on doing one thing well, integrate multidisciplinary knowledge into the innovative design and manufacturing of textile sorting machinery, so that all the world's spinnable fibers can be sorted well, and contribute to the development of China's textile industry. This is my greatest ideal

Bridge of technological inheritance, cultivating new era technological elites

I pass on my experience to the younger generation of technical personnel, so that they can avoid detours and grow rapidly, "said Ji Heju. Under his leadership and cultivation, Qingdao Dongjia Textile Machinery Group has produced 3 outstanding talents in Qingdao and 4 outstanding talents in the West Coast New Area, and has trained more than 200 academic leaders and technical backbones in the fields of wool spinning, cotton spinning, non-woven fabrics, and special fiber combing equipment. Currently, Ji Heju serves as a member of the Teaching Guidance Committee for Mechanical Engineering in Shandong Province's universities, an industry professor in Shandong Province's universities, and an off campus mentor at Qingdao University of Technology. He also serves as a member of three sub committees of the National Standardization Committee. Hosted and participated in the development of 18 national and industry standards, including 4 national standards. The industry standard "Comb Cleaning Machine" participated in the development and won the second prize for scientific and technological progress from the China Textile Industry Federation.