1. Influence on spindle
The quality of bobbin is very important to the use of spindle. The high quality bobbin can make the spindle run smoothly, prolong the service life of the spindle and ensure the yarn quality; The use of poor quality or deformed damaged bobbins will not only increase the unbalance of the spindle at high speed, increase the load of the spindle bearing and aggravate the abnormal wear of the spindle, which will lead to the numbness and shaking of the spindle, increase the yarn breakage and produce feather yarn, limit the increase of spinning speed, but also increase the energy consumption and noise of the spindle, form a vicious circle and increase the machine breakage rate, It directly affects the output and improves the labor intensity of the car stopper.
2. Hairy yarn and weak twist yarn are produced by bobbin jumping
The uneven material of the bobbin itself, the poor matching between the bobbin and the spindle or the insufficient holding force, the large gap between the bottom hole of the bobbin and the taper of the spindle disc, the looping on the spindle, the improper intubation, the light weight or deformation of the bobbin are all the factors that affect the bobbin to float and jump in the small yarn stage, resulting in high yarn breakage rate and difficult operation in the small yarn stage, It is easy to produce yarn tension unevenness, feather yarn and weak twist yarn.
3. Bad tube yarn forming leads to head fall and foot shedding
The size of the eye of the bobbin is different, resulting in the different height of the bobbin. If the eye of the bobbin is worn too much, the spindle position of the bobbin will be reduced and the feeder yarn will be produced; If the eye of the bobbin is too small or there are too many tangles in the eye of the bobbin, the spindle position will rise and the yarn will fall off.
4. It is difficult to pull out the tube, which can easily make the yarn out of loop and reduce the doffing efficiency
It is difficult to pull out the bobbin because of the wear of the eye of the bobbin and the small gap between the bottom hole of the bobbin and the spindle cone. It is easy to cause the yarn out of the loop when doffing, reduce the doffing efficiency and increase the labor intensity of workers.
5. Yarn unwinding is difficult due to surface defect of bobbin, resulting in bad yarn
The surface and appearance of the bobbin are also very important. The bobbin with rough surface, crack, knife wound and abrasion leads to difficulty in spinning and yarn unwinding, resulting in bad yarn.
