What do you know about rapier looms?
Rapier looms have wide adaptability and high cost performance, and occupy their own proportion in shuttleless looms. This paper analyzes the technical level and development trend of rapier loom at home and abroad, analyzes and discusses some problems in the selection of rapier loom, and puts forward some suggestions on the application of rapier loom.
With China's accession to the WTO and the further deepening of the reform of the enterprise system, China's textile industry is facing opportunities and challenges. Competition will be the adjustment of product structure and the improvement of product grade and quality. The use of new technology to transform traditional handicrafts is the only way for the development of productive forces. Especially in the rapid development of science, technology to update the speed of teaching unprecedented speed today. Therefore, the traditional textile industry also needs to be transformed step by step. How to speed up the pace of technological progress and increase the proportion of China's shuttleless looms is a fundamental shortcut to solve product problems. This article only has shuttleless looms at home.
According to incomplete information statistics, as of the end of 2004, Chinese enterprises have nearly 1.76 million traditional looms of all kinds in China, including about 1.09 million shuttle looms, 1.03 million shuttle cotton looms, and more than 675000 shuttleless looms. (of which, 720000 projectile looms, 121,000 rapier looms, 315,000 ga74 series simple rapier looms and 85,000 air-jet looms), the non-shuttle loom rate is 24.83 per cent. GA74 series includes) rapier looms at 38.24%). GA611, GA615(1511, 1515) series of cotton looms in the cotton industry is still a lot of money to use.
In the weaving industry, private enterprises have accounted for more than 2/3 of the whole industry through structural adjustment and system adjustment, and the proportion of shuttleless looms in coastal areas has accounted for more than half of the country, and the ability of products to adapt to the market has been improved. There are also a considerable number of enterprises have carried out joint ventures, restructuring and equipment upgrading, with the ability to produce fabrics on a large scale, and most of the products are exported. However, the country is still dominated by low-level production capacity, high-level production capacity is insufficient, products have not changed for many years, and the level of supporting and serialization is very insufficient.
At present, the technical level of rapier looms and supporting equipment at home and abroad is in shuttleless looms. Rapier looms are universal and reliable looms for small batch, medium batch and frequent color change fabrics of weaving enterprises. The price is lower than the projectile loom. In recent years, with the improvement of the weft insertion mechanism, the weft insertion speed has increased, but the change of acceleration is relatively gentle. The weft insertion structure of the rapier can be applied to yarns of different materials and structures. There is no need to exchange rapiers between 0.7 tex and 3300 tex. The range of fabrics processed by rapier loom has developed from medium-thick fabrics to light and thin fabrics, from clothing fabrics to decorative and industrial fabrics, from single-layer fabrics to pile and double-layer pile fabrics, and from narrow width to 4.6 meters. Its breadth has developed from low speed to high speed. At present, the weft insertion speed of rapier loom has exceeded 1500 m/min, and the color selection of weft yarn has also developed from single color to 16 colors, and the adaptability of varieties is not as good as that of other shuttleless looms.
Technical Status of Rapier Loom
The cutting tooth is a vulnerable part in the development machinery of coal mining and roadway excavation construction technology enterprises. The cutting tooth of shearer is an important tool for coal falling and crushing. The research method of cutting tooth performance directly affects the social factors that affect the innovative thinking ability, power consumption, stability during operation and service life of relevant data analysis parts in other countries of the production company of shearer, the general structure is embedded in the hardened and tempered low alloy structural steel cutter body.
In the working process, the pick bears high periodic compressive stress, shear stress and impact load, and its failure forms are mainly the head falling off, the tool collapse, the head and the blade wear, in some working conditions, the failure of the pick is often caused by the blade fracture. The performance of the mechanical system of the cutting tool body can directly affect the service life of the cutting tool.
maintenance of shearer pick:
Shearer is an indispensable machine in the coal mining industry, so shearer should be especially careful in daily maintenance. Since the shearer pick is now located in China at the end of the brazed cylindrical carbide tool hole, resulting in a tapered tool front end easy to wear, which can cause students to attach great importance to our development. We can install wear-resistant electrodes on the cone surface, spray-weld wear-resistant layer on the cone surface, or weld hard alloy wear-resistant ring on the cone surface to protect the shearer from coal mining.