Sawtooth Printing Working Principle of Sawtooth Ginning Machine
The working principles of various domestic sawtooth gins are basically the same. The sub-cotton falling from the cotton storage box is quantitatively sent to the opening roller through a pair of flower feeding rollers. Through the opening roller, the sub-cotton is struck and loosened, so that the bricks, tiles and stones wrapped in the sub-cotton ball are equal in weight. Debris and stiff cotton are exposed on the surface of the cotton flow. The friction and shaking of the cotton and the waste removal net cause part of the dust and infertile cotton to be separated. The opened cotton is thrown to the opener by the opening roller. On the large saw blade roller, the cotton wool moves forward together with the large saw blade roller. The cotton wool is evenly attached to the surface of the large saw blade roller through a wire brush, and some heavy debris and stiff flap cotton are discharged first. Entering the grating area, under the multiple impacts of the grating, the cotton flow on the large saw blade roller is shaken by the impact, and a large amount of heavy debris and small impurities mixed with stiff flap cotton are discharged. The cotton wool is still rotating with the large saw blade roller. When it comes into contact with the small brush roller, under the high-speed rotation of the brush roller, the cotton wool hooked on the saw blade is brushed to the cotton dripping plate, and the heavy cotton that is discharged is Debris, stiff cotton and a small amount of single-particle cotton fall on the recycling saw blade roller. When passing through the wire brush, the cotton is brushed and attached to the saw teeth. Due to the small amount of cotton, it is far from being able to remove all the heavy debris and stiff particles. The cotton is contained by the valve, so the impurities that fall on the recycling saw blade roller are discharged to the cleaning auger under the action of centrifugal force. When the cleaned cotton is transferred to the small brush roller with the recycling saw blade roller, it is brushed and sent to the cotton dripping board. Through the adsorption of iron impurities in the cotton by the magnet clamp, the loose, snow-white and clean cotton is removed from the cotton. The plate enters the ginning section. There is a dust suction pipe above the cotton dripping board, which can remove lint and fine dust.
After being cleaned by the flower blowing and feeding department, the clean and loose cotton enters the front box of the ginning department. A cotton picking roller is installed at the lower part of the front box. When the cotton flows to the licker-in through the deflector, It is fed to the saw blade by the rotation of the small licker-in roller. The rotating saw blade hooks and pulls the fibers on the sub-cotton, and hooks into the middle box through the gap between the rib rows of the blocking shell. Under the action of the hooking and traction of the saw blade, The cotton roll box is made of irregular curves. Because the cotton roll has a certain pressure and a certain speed difference with the saw blade, part of the fiber pulled by the saw blade has been separated from the cotton during the pulling process. Some Relax to the working point of the ginning ribs (since the gap between the two ribs at the working point is 2.8~3.3mm, which is smaller than the waist diameter of the cotton, the cotton with fibers is blocked in the working box and continues to relax with the cotton rolls), It is repeatedly pulled by the saw blade until all the long fibers are pulled out, and then it is separated from the cotton roll from the cotton comb and the arc surface of the large rib, and then discharged from the row. The fibers pulled down by the sawtooth hook enter the back box through the gaps between the embossed rib rows. When encountering the upper row of miscellaneous knives, the impurities in the fibers have different densities from the cotton fibers. Under the action of their own inertial force, part of the impurities in the fibers rely on the airflow along the knife edge. The suction nozzle is discharged from the machine, and the fibers on the saw teeth continue to rotate. When they meet the high-speed rotating brush roller, the brush bristles are inserted into the saw blade by 1 to 2 mm, and there is a linear speed difference with the saw blade. In addition, the brush The high-speed rotation generates a lot of wind. Therefore, under the combined action of the brush and brush, all the fibers are separated from the saw blade, enter the lint pipe and are transported outside the machine and enter the lint cleaner or lint collector. At the same time, the impurities in the fiber are removed. Troubleshooting organization.
The technical parameters of MY series and 6MY series sawtooth gins are shown in Table 8-2. 
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