Yarn hairiness is formed when the fiber bundle is pulled out from the front roller of the spinning frame, and is formed under the action of the ring and the traveler during the twisting of the formed twisting triangle, and many hairinesses can also be produced when the winder winds up. Yarn hairiness poses no great threat to the weaving of the shuttle loom because the shuttle weaving machine uses the shuttle to insert the weft. Even if there is hairiness on the yarn, it will not affect the normal flight of the shuttle and even cause the failure of weft insertion. The loom of the loom stops.
According to survey statistics, 75% of the weaving speed of air-jet looms is related to the hairiness of the warp. The hairiness on the weft yarn not only causes the opening of the loom to be unclear, but also makes it difficult to insert the weft, and weaving defects may affect the product quality. The hairiness of the yarn falls off due to friction during processing in the downstream processes, resulting in flying pollutes the production environment and endangering human health, as well as creating new defects that degrade the quality of the yarn and fabric. Therefore, how to reduce the hairiness on the yarn has caused people's great attention.
At present, the 1332 grooved cone winder used widely in China's cotton textile enterprises is simple in structure, easy to use, consumes less power, and has a low cost of use. However, due to the use of a bakelite grooved tube in the winding section of the machine, the problem of static electricity and the lack of smoothness of the yarn passage caused the hairiness after the winding to be much higher than that of the yarn falling down from the high-speed automatic winding machine. This is one of the main reasons why the yarn produced by the domestic 1 332 winder is not adapted to the production requirements of air-jet looms. So, how to reduce hairiness on the 1332 grooved cone winder?
1. Reduce hairiness from the adjustment process. Winding process parameters: such as the weight of the tension disc, the clearance of the clearing board, the distance of the guide yarn, etc., will have an impact on the hairiness if it is improperly adjusted. Adjust these parameters must be adjusted according to the size of the winder, otherwise it will increase the hairiness on the yarn.
2. Reduce hairiness from enhanced equipment maintenance. The parts of the passageway of the yarn on the machine, such as the sides and corners of the yarn guide groove of the winding drum, the surface of the yarn guide bar, the destruction of the balloon, and the passage of the yarn passing from the yarn guide plate, must be smooth.
3. Reduce hairiness by using suitable wind speed. Under the conditions as far as possible, we must properly select a lower winder speed and reduce the tension of the winder, which is a method to reduce yarn hairiness.
4. After the yarn passes through the reel yarn, the hairiness increases, the CV% value of the hairiness distribution decreases, and the more times the yarn winds, the more the hairiness increases. therefore. In the production should reduce the number of windings. . Minimize cheese rewind and rewind.
The plastic drum used on the 5.1332 mesh machine can cause the yarn hairiness to increase due to the friction generated in the yarn, especially when processing coarse yarns and chemical fiber blended yarns. Therefore, when the equipment is reformed, it is necessary to consider changing the bakelite groove into a metal groove to reduce hairiness.
6. The installation of a balloon controller on the 1332 model is an important measure to reduce the hairiness of the winder. Through the production practice, it is shown that the winding machine winder without wind turbine controller has more than 2 times more hairiness than the former winder yarn, and the hairiness of the winder after the air balloon controller is installed is significantly reduced. Even if the winding speed increases after installing the balloon controller, the hairiness will decrease.
7. Yarn itself rubbing against each other can also produce hairiness. Therefore, the cop from the bobbin falling on the spinning frame or the bobbin yarn that has been formed into a network will also produce hairiness during the unwinding, transportation and storage. To reduce this part of hairiness. A fine drop-off automatic production line can be used to transport the tube yarn by means of a peg tray or a transport belt, so as to reduce friction and collision between the yarn spool and the bobbin yarn and between the bobbin yarn and the bobbin yarn.