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The main part of the fly knit upper is the key to supporting the foot and providing a basic wearing experience, and this important task is undertaken by the first system of the Pre-selected three system fly knit shoe upper computerized flat knitting machine. This system mainly controls the main color yarn and is responsible for knitting the main body of the upper. The main color yarn usually occupies most of the upper area and is the core element that determines the tone of the upper appearance. Its selection and knitting quality directly affect the visual effect and durability of the entire upper.
In actual production, the main color yarn will be selected from different materials according to design requirements. If you pursue a wear-resistant and fitting wearing experience, the main color yarn of chemical fiber materials such as nylon will be used. When knitting, the first system precisely controls the tension of the yarn and the movement trajectory of the needle to ensure that each needle is closely arranged, so that the main body of the upper has good strength and stability. Whether it is a simple flat weaving or a vamp body with a certain curvature and shape, the first system can accurately execute instructions and perfectly present the main shape in the design blueprint. For example, when making the main body of the running shoe upper, the first system will use different weaving densities in different areas of the upper according to the force characteristics of the foot during movement. The instep area adopts a relatively loose weaving method to ensure sufficient breathability; while the toe and heel areas increase the weaving density to enhance the impact resistance of the upper, laying a solid and reliable foundation for the entire upper, ensuring that the upper can withstand the movement of the foot and the friction of the outside world during subsequent wear, and maintain the overall shape.
When the main body of the upper is built, in order to meet the functional requirements of different shoe models, especially to provide better support and protection for the foot, the second system begins to play an important role. The second system is mainly responsible for weaving a supporting part with special material yarn. These special material yarns often have high strength, high elasticity or special structure, and can enhance the support performance in specific areas of the upper according to design requirements.
Take basketball shoes as an example. In the fierce basketball game, the ankles, arches and other parts are under great pressure and are very easy to get injured. The second system will accurately weave special material yarns into these key parts. During the weaving process, the second system will adjust the weaving density and method according to the pre-set program. For the ankle area that needs stronger support, by increasing the weaving density, the special material yarns are closely interwoven to form a solid support structure, just like wearing invisible protective gear for the ankle; while in the arch area, a special weaving needle method is used, combined with special material yarns with memory function, which can be adaptively adjusted according to the arch shape of different wearers, disperse pressure during exercise, and reduce the risk of foot injuries. In the production of the uppers of some outdoor hiking shoes, the second system will weave high-strength special material yarns at the connection between the sole and the upper, enhance the bonding strength between the upper and the sole, and improve the stability and professionalism of the shoes when walking on complex terrain.
If the first and second systems give the flying woven upper practical functions and stable structure, then the third system adds unique charm and personality to the upper. The third system uses colored yarns to weave unique decorative patterns, making the originally monotonous upper colorful and unique. There are many types of colored yarns, and the color matching is even more varied, which provides designers with a broad creative space.
When weaving decorative patterns, the third system uses precise control of colored yarns to outline various exquisite graphics on the upper. When making trendy sneakers, designers can use the third system to weave layered graffiti-style patterns with colored yarns in the blank area of the upper body, which forms a sharp contrast with the main color yarn; on women's fashion casual shoes, the third system can weave delicate floral patterns, while echoing with the supporting parts woven with special material yarns, so that the entire upper is visually harmonious and unified. These decorative patterns not only enhance the beauty of the upper, meet consumers' pursuit of personalization, but also play the role of brand identification. For example, the brand's iconic patterns or letters are woven into the upper through the third system to enhance the product's recognition and become a carrier for brand culture communication.
During the weaving process, the three systems are precisely coordinated through a computer control system. The computer control system is like the "brain" of the entire flat knitting machine. It stores detailed knitting programs in advance and monitors and directs the work of the three systems in real time. When the first system knits the upper body to a specific position, the computer control system will issue instructions in time to start the second system, so that the special material yarn can be seamlessly connected to the knitting, ensuring that the connection between the support part and the main part is natural and smooth. After the second system completes the knitting of the support part, the third system will start at the right time to knit the decorative pattern according to the design requirements. When knitting children's sports shoes, the computer control system will coordinate the work of the three systems according to the growth and development characteristics of children's feet. The first system knits a soft and comfortable upper body; the second system knits a moderately supported structure at key parts; the third system knits a cartoon pattern that children love, and adjusts the size and position of the pattern to ensure that it does not affect the functionality of the upper. During the whole process, the computer control system will continuously adjust the working parameters of the three systems, such as yarn tension, knitting speed, etc., to ensure that each system can work in the best state and avoid problems such as yarn breakage and pattern dislocation.
In addition, the three systems can flexibly adjust the work order and focus according to the different shoe design requirements during the knitting process. For the production of fashionable sandals, the third system may intervene earlier, and some simple decorative elements will be incorporated into the initial stage of the upper body weaving to create a light and fashionable appearance; while for professional track and field competition shoes, the second system may work longer to ensure the quality and effect of the supporting parts and help athletes perform at their best on the field. This flexible working mode enables the pre-selected three-system flying knitting upper computer flat knitting machine to adapt to the diverse shoe designs and meet the needs of different consumer groups.
From the selection and matching of materials, to the orderly weaving of the three systems, to the precise coordination of the computer control system, the three systems of the pre-selected three-system flying knitting upper computer flat knitting machine work closely together to create high-quality flying knitting uppers. They not only improve the functionality, aesthetics and durability of the uppers, but also promote the development of the shoemaking industry in the direction of efficiency, intelligence and personalization.
