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In the process of the textile industry's transformation to intelligence and efficiency,
Pre-selected three system computerized flat knitting machine with smart yarn feeder has become a key equipment to promote industrial upgrading. As the core component of the computer flat knitting machine to achieve precise knitting, the triangle system completes various complex knitting movements by accurately controlling the knitting needle movement trajectory. The precision grinding and special coating treatment process used on the surface of the triangle system starts with reducing the friction coefficient, creating conditions for the smooth movement of the knitting needle, thereby significantly improving the knitting efficiency and fabric quality of the computer flat knitting machine, which is worth in-depth exploration.
I. Overview of the pre-selected three-system intelligent yarn feeder computer flat knitting machine and triangle system
The pre-selected three-system intelligent yarn feeder computer flat knitting machine integrates yarn feeding control and multi-system knitting functions, and can perform knitting work of three systems at the same time, greatly improving production efficiency. Its working principle is to set the knitting program through the computer control system, the intelligent yarn feeder accurately controls the yarn delivery, and cooperates with the triangle system to control the knitting needle movement trajectory to achieve the knitting of complex patterns and tissue structures.
As the "command center" of the knitting needle movement, the triangle system is composed of multiple triangle components of different shapes and functions. These components cooperate with each other to apply a force of a specific direction and size to the knitting needle, so that the knitting needle can complete the actions of rising, falling, and lateral movement, and realize the knitting process of looping, tucking, and floating. In the knitting process, the accuracy of the knitting needle movement trajectory directly determines the final quality of the fabric. If the triangle system cannot effectively control the knitting needle movement, problems such as stuck needles and skipped needles will occur, resulting in defects in the fabric and affecting the production progress.
2. Optimization of the performance of the triangle system by precision grinding process
(I) The necessity of grinding process
Even if the triangle system is made of high-quality special alloy steel, the original processing surface still has roughness and microscopic defects. These tiny unevenness will increase the friction resistance between the knitting needle and the triangle system, hindering the smooth movement of the knitting needle. When the knitting needle moves, it may be hindered by friction and cannot run along the predetermined trajectory, which not only reduces the knitting efficiency, but also accelerates the wear of the knitting needle and shortens its service life. Therefore, it is necessary to carry out precision grinding of the triangle system.
(II) Implementation process of precision grinding
Precision grinding uses grinding tools and abrasives to remove a small amount of surface processing on the triangle system. In the early stage of grinding, abrasives with coarser grains are used to remove larger processing marks and protrusions on the surface, and initially reduce the surface roughness; then, abrasives with finer grains are gradually replaced for fine grinding to further improve the surface flatness.
During the grinding process, the movement trajectory and pressure control of the grinding tool are crucial. By reasonably designing the rotation, swing, linear reciprocating and other movement modes of the grinding tool, it is ensured that all parts of the triangle system surface are evenly ground. Accurately controlling the grinding pressure can not only ensure the grinding efficiency, but also avoid surface deformation or damage, so that the ground surface meets high precision requirements.
(III) Performance improvement brought by grinding
After precision grinding, the surface roughness of the triangle system is greatly reduced and the flatness is significantly improved. The smooth and flat surface effectively reduces the friction resistance of the knitting needles during movement, and the knitting needles can easily move according to the trajectory set by the cam system, reducing energy loss and heat accumulation.
The knitting needles move more smoothly. When knitting at high speed, the number of faults such as stuck needles and skipped needles is significantly reduced, ensuring the continuous knitting process, reducing downtime and maintenance time, improving the stability and reliability of equipment operation, and thus improving the overall knitting efficiency. At the same time, the accuracy of the knitting needle movement is guaranteed, and each knitting action can be completed accurately, laying the foundation for the production of high-quality fabrics.
3. Special coating treatment to enhance the performance of the cam system
(I) The importance of coating treatment
Although precision grinding reduces the surface friction coefficient of the cam system, the friction between the knitting needles and the cam system will still cause surface wear and affect the performance of the cam system during long-term high-speed and high-load knitting. In addition, the humid environment of the textile workshop, fiber dust and other factors may also corrode and pollute the surface of the cam system. Therefore, special coating treatment based on precision grinding is indispensable.
(II) Types and characteristics of special coatings
There are various types of special coatings applied to the surface of the cam system, and the common ones are wear-resistant coatings, friction-reducing coatings, and anti-corrosion coatings. Wear-resistant coatings use ceramics, cemented carbide and other materials with high hardness and good wear resistance. They are coated on the surface of the triangle system by spraying, chemical vapor deposition and other methods to form a hard protective film to resist friction and wear and extend the service life of the triangle system.
The anti-friction coating aims to reduce the surface friction coefficient. It uses low-friction materials such as molybdenum disulfide and polytetrafluoroethylene to form a lubricating film between the knitting needle and the triangle system, further reducing the friction resistance and making the knitting needle move more smoothly. The anti-corrosion coating uses corrosion-resistant materials such as epoxy resin and polyurethane to isolate the surface of the triangle system from the adverse external environment, prevent corrosion and pollution, and maintain the stability of the system performance.
(III) Process and effect of coating treatment
Special coating treatment processes vary depending on the coating material. The spraying process heats the coating material to a molten or semi-molten state, and uses high-pressure gas to spray it onto the surface of the triangle system to form a uniform coating; the chemical vapor deposition process causes the gaseous molecules of the coating material to react chemically on the surface under specific high temperature and vacuum conditions to form a film.
After special coating treatment, the surface performance of the triangle system is significantly enhanced. Wear-resistant coating effectively reduces surface wear, extends the replacement cycle of the cam system, and reduces equipment maintenance costs; anti-friction coating further reduces the friction coefficient, makes the knitting needles move flexibly, improves knitting efficiency and reduces knitting needle wear; anti-corrosion coating provides reliable protection for the cam system, enables it to operate stably in complex textile environments, and ensures long-term stability of equipment performance.
Fourth, precision grinding and special coating treatment work together to improve knitting efficiency
Precision grinding and special coating treatment work together to improve the performance of the cam system. Precision grinding creates good conditions for special coating treatment. The smooth and flat surface after grinding helps the coating to adhere evenly and firmly, giving full play to the coating performance. If the surface is rough, it will lead to uneven coating thickness, easy to peel off, cracking and other problems, affecting the service life and protective effect of the coating.
Special coating treatment further enhances the performance of the cam system on the basis of precision grinding. It makes up for the shortcomings of the grinding process in wear resistance, friction reduction, and corrosion resistance, protects the high-precision surface after grinding, prevents it from being damaged during use, and maintains the low friction coefficient and high precision of the surface.
Under the synergistic effect of the two, the cam system controls the knitting needle movement trajectory more accurately and stably. Under the precise control of the triangle system, the knitting needles can quickly and accurately complete complex knitting movements. During the operation of the pre-selected three-system intelligent yarn feeder computer flat knitting machine, the knitting needles move smoothly, and the three systems can cooperate efficiently to quickly weave fabrics with complex patterns and structures. The fabrics produced have uniform structures, clear patterns, soft textures, and comfortable touches, meeting the market demand for high-quality knitted products. At the same time, the equipment failure rate is reduced and production efficiency is improved, bringing good economic benefits and market competitiveness to the company.
