The yam is an important process that is indispensable in the entire spinning process. The basic task of the yarn process is to combine two or more single yarns on a yarn doubling machine and make a yam bobbin. In the production process of the yam, attention should be paid to the problems of single yarn, multi-strand yarn, small yarn twisted yarn produced by the yarn, and only the work can be done to ensure the quality of the twisting machine when the strand is twisted. The reason for the single yarn is mainly in the yarn joining process, the yarn detector or the cutter is out of order. After a single yarn break, the yarn joining program of the equipment is thrown in the operation, and the self-stop device on the yarn machine does not work, resulting in another The single yarn is thrown in the process of doubling.
The split yarn is the main cause of the small crepe. The reason why the small yarn is formed by the yarn is that the length of the two single yarns wound on the yarn bobbin is inconsistent after the yarn is divided, so when the yarn is passed to the twisting machine, the yarn is transferred to the yarn dividing portion. Long single yarns appear when they are self-twisting for balanced and short single yarn lengths. If the yarn split is severe, that is, the difference between the lengths of the two single yarns is too large, a dense small scorpion yarn defect will appear.
The reasons for the yarn are: the groove of the metal groove is defective, the weight of the tension piece is inconsistent, and the single yarn in the normal channel is not in the normal channel, the metal groove is scratched, and the wire passage is not smooth. The pressure of the forming creel is not enough and the operator is not operating properly.
