High-speed warp knitting machines are a type of equipment commonly used in the textile industry. Utilizing them can enhance work efficiency and reduce labor costs, and these machines are also quite convenient to use. Every product has its corresponding working principle, and the high-speed warp knitting machine is no exception. Below, we will introduce the working principle of high-speed warp knitting machines from several aspects.
The weaving mechanism includes the needle bed, reed, weft shift bed, and pressing plate, which are generally driven by cams or eccentric rods. Cams are commonly used in warp knitting machines with lower speeds and more complex movement patterns of the knitting components. Eccentric rods are widely used due to their smooth transmission, ease of processing, and lower wear and noise during high-speed operation.
2. The comb shifting mechanism allows the comb to shift horizontally during the loop formation process according to the requirements of the knitted fabric structure, placing the weft yarn on the needle for weaving knitted fabrics with specific structures. Typically, there are two types: the board-type and the cam-type. The board-type mechanism connects the boards with corresponding shapes and sizes to form a board chain according to the knitted fabric structure, enabling the comb to shift horizontally, suitable for weaving complex patterns and easy pattern changes. In the cam-type mechanism, the cam is designed according to the required comb shifting pattern of the knitted fabric, providing smooth transmission and able to adapt to higher weaving speeds.
3. Beam feed devices, which remove warp yarns from the beam and transport them to the weaving area, are divided into two types: negative and positive. Negative beam feed devices send out warp yarns as the beam is pulled by the yarn tension, requiring no specialized beam drive mechanism, and are suitable for looms with lower speeds and more complex feeding patterns. Positive beam feed devices use a dedicated drive mechanism to rotate the beam and release warp yarns, with two subtypes: tension-sensing and line speed-sensing. The tension-sensing device controls the beam's speed by sensing the tension of the warp yarns through a tension rod. The line speed-sensing device controls the beam's speed by sensing the motion speed of the warp yarns through a speed measurement device. These devices send out warp yarns at a predetermined line speed, enabling stable operation under high-speed conditions, and are therefore widely used on high-speed weaving machines.
4. The function of the pulling and winding mechanism is to pull the fabric out of the weaving area at a predetermined speed and wind it into rolls.
After our introduction, everyone should understand the working principle of high-speed warp knitting machines. Knowing these principles can help you use such products effectively. However, merely understanding the working principle is not enough; you also need to be aware of the usage precautions to avoid issues during operation.