Strengthen operation management and stabilize card sliver quality
(1) Clean frequently to prevent flying particles from entering the cotton net;
(2) Frequent patrols and frequent inspections;
(3) Ensure that the dust collection points such as the licker-in and doffer are free of dust Pipes are clear.
Improve the operating status of equipment and ensure the quality of slivers
(1) Strengthen the maintenance of equipment.
(2) Strengthen the monitoring and inspection of the operating status of the equipment. Good equipment status is the basis for spinning good yarn.
(3) Improve the sharpness of the card clothing, ensure the process is on the machine, and achieve “five sharp edges and one accuracy”.
(4) Shorten the cleaning cycle.
(5) The actual operation rate of the opening and cleaning machine has reached more than 85%. This pair of blowroom and carding system has stable production, which is “fine grasping, thin feeding, light beating, and opening”. Loose, densely combed, less damaged”, 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 needle, serrated rack, and dust collector should be smooth and clean without burrs to avoid snagging fibers and rubbing them to produce neps and tows. .
Control the air flow parameters of each part
Ensure The dust filter equipment operates normally and ensures sufficient air pressure and wind speed at each dust suction point of the carding machine. Stabilize the air flow in the workshop and ensure the dust filtering air volume and pressure.
Keep the passage smooth and clean, and the air flow in the pipe is smooth
When the airflow configuration of the pipeline is unreasonable, it will affect the loosening and removal of impurities and 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.
Control of temperature and humidity
Temperature When it is too low, the wax on the surface of the cotton fiber will harden, the fiber will become weak, and the strength will decrease; 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.
Uniformity of carding machines
Maintaining the uniformity of the carding machine includes dust removal efficiency, short staple growth rate, nep growth rate, and card sliver quality unevenness, that is, the table difference must be controlled. </p
