Use 1. The gray fabrics of ordinary fabrics, elastic fabrics and velvet fabrics are woven from raw materials such as nylon, acrylic, polyester filament, aminoam, polyester textured yarn, blended yarn, etc. After finishing, they can produce inner and outer garment fabrics, Simmons fabrics, mosquito net fabrics, curtains, tablecloths, interior decoration, industrial fabrics, coated fabrics, shoe sole materials, automotive interior decoration materials, etc. 2. This model is a 4-comb Trico machine with medium-range composite needles. Compared with the HKS4-1 with short-range, it has higher adaptability and flexibility to market demand, and is more suitable for the current variety. Frequently changing needs. The machine can be equipped with a spandex device, suitable for knitting spandex fabrics. Loop forming mechanism 1. The looping mechanism adopts computer animation to simulate the motion cooperation, and the guide needle of the bar is a small needle. The loop curve of the machine motion is optimized, so that the loop motion coordination of the machine is more reasonable. 2. The crankshaft linkage mechanism is optimized by computer, and the dynamic balance of the crankshaft is processed, so that the noise and vibration of the machine are reduced. Improves the service life of the machine. 3. The grooved needle bed, needle core bed, bar bed and sinker bed all use large-section hollow aluminum-magnesium alloy profiles, which effectively reduces the moving inertia and dynamic load of the moving parts, and significantly improves the moving and dynamic characteristics of the machine. 4. The let-off system adopts EBC multi-speed electronic let-off, which makes the machine control and operation simple; The crankshaft oil tank lubrication system adopts active pressurized lubrication and oil circulation constant temperature control to ensure the smooth and safe operation of the machine and effectively reduce the energy consumption of the whole machine.