01 Strengthen operation management and stabilize the quality of raw slivers
1) Clean frequently to prevent flying particles from entering the cotton net;
2) Patrol frequently to ensure more Check;
3) Ensure that the dust pipes at the licker-in, doffer and other suction points are unobstructed.
02 Improve the operating status of the equipment and ensure the quality of the slivers
1) Strengthen the inspection of the equipment Maintenance work;
2) Strengthen monitoring and inspection of equipment operating status. Good equipment status is the basis for spinning good yarn;
3) Improve the sharpness of the card clothing to ensure the craftsmanship and achieve “five sharp edges and one accuracy”;
4) Shorten the wiping cycle;
5) The actual operation rate of the opening and cleaning machine reaches more than 85%, which ensures stable production of the blowing and carding system, which is “fine grasping, thin feeding, light beating, loosening, dense combing, and less damage” , it is beneficial to remove more knots;
6) The conveyed cotton runs smoothly, without blockage, without flowers, and reduces cotton bunches and neps. Therefore, the pipes and cotton boxes must be sealed to maintain sufficient air volume and pressure;
7) The beater’s blade, brad comb, sawtooth rack, and dust removal knife must be Smooth and clean, without burrs to avoid snagging fibers and causing neps and tows due to rubbing.
03 Control the air flow parameters of each part
Ensure the normal operation of the dust filter equipment and ensure that there is sufficient air at each dust suction point of the carding machine. pressure and wind speed. Stabilize the air flow in the workshop and ensure the dust filtering air volume and pressure.
04 Keep the passages smooth and clean, and the airflow in the ducts is smooth
When the airflow configuration in the ducts is unreasonable, it will affect the opening Loose impurities may cause traffic jams and form neps and tows. Keep all dust pipes on the machine unobstructed, and the filter bags in the dust filter chamber should be cleaned or replaced in time.
05 Control of temperature and humidity
When the temperature is too low, the wax on the surface of the cotton fiber becomes hard, the fiber becomes weak, and the strength decreases ; When it is too high, the cotton wax will soften, affecting drafting and causing uneven evenness. When the relative humidity is too high, the impurity removal efficiency of the blowing and carding unit is low, the card sliver contains a lot of impurities, the carding transfer is difficult, the cotton web droops, and the neps increase. When the relative humidity is too low, the fibers are easy to break, resulting in an increase in short lint and waste, which is not conducive to saving cotton; fly flakes increase, the cotton web floats, easy to produce broken edges, and more broken ends; the cotton web is attached to the doffer, and the cotton is stripped difficulty. Especially when using Xinjiang cotton, which contains higher sugar content, more attention should be paid to the control of temperature and humidity. The temperature and humidity control of the blowroom-carding unit is stricter than that of the ordinary process.
06 Uniformity of the carding machine
Maintaining the uniformity of the carding machine includes dust removal efficiency, short The cashmere growth rate, nep growth rate, and card sliver quality unevenness must be controlled well. </p
