How to reduce the unevenness of combed sliver?

1. Reasonably adjust the separation roller clockwise rotation timing, nipper closing timing, cylinder positioning and other parameters, adjust the pressure of the separation rubber roller and drafting rubber roller, and rationally configure the width of the collector between the separation rollers (this new type of combing machine) The width of the collector is adjustable) to improve the quality of separation and joining.　　 If the length of the working fiber and the length of the cotton feed are relatively long, the timing of forward rotation of the separating roller should be appropriately advanced, especially when the cotton is fed forward. However, the interference of the needle teeth of the cylinder rear row on the tail end of the cotton net poured into the machine after the separation roller is reversed early should be taken into account. From the perspective of improving the quality of the separation and joining and reducing the unevenness of the dryness, the nippers should not be closed too early, otherwise the opening will be far, which will affect the straightening of the whiskers, thereby affecting the quality of the separation and joining.　　 However, it should be noted that the timing of the nippers closing time will determine the reliability of the nipper jaws to hold the cotton layer when the cylinder starts to comb. The relationship between these mutual constraints and influence factors must be dealt with.　　 2. Correctly configure the drafting process of the drafting mechanism. After drafting, the unevenness of the yarn sliver is generally large. If the drafting configuration is not properly configured, the evenness will be further deteriorated. Therefore, it should be based on the basis weight of the combed sliver, the length of the fiber, and the drafting of the subsequent process. Ability and other parameters to correctly configure the drafting multiple of the drafting mechanism, roller gauge and pressure. On the domestic new type combing machine, the drafting mechanism adopts a relatively large combed sliver basis weight (a relatively small drafting multiple), which is beneficial to ensure the evenness of the combed sliver, and can also reduce the speed of the coiling mechanism, which can be used for other machines. Type reference. The drafting of the rear zone of the FA266 comber is designed to be adjustable, which increases the flexibility of adjustment, is conducive to the reasonable adjustment of process parameters and improves the evenness of the evenness.　　3. Reasonably control the tension and drafting of each part. Because the combed sliver is formed by joining individual whiskers, and the parallel straightness of the fibers is high, the cohesive force between the fibers is poor, and it is easy to cause accidental elongation. Therefore, the tension is The draft should be as small as possible. After drafting by the drafting mechanism, the tension draft should be close to 1. 4. To keep the cylinder and top comb machinery in good condition, without intarsia, the surface of the separating rubber roller, drafting rubber roller and pressure roller should be smooth, rotating flexibly, and the channel through which the yarn sliver passes should be smooth and clean to prevent damage to the yarn sliver structure and accidents. elongation. Article Keywords: 　Combed Strip