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Card neps and carding

Author:Xinjinlong Machinery-Fabric Recycling Machine Manufacturer

For further purification, and roll and sliver sentences to be obtained, the fibers must be fully combed. Special equipment for the textile industry on the winder. As the last process of spinning and the first process of weaving, winding is the link between the past and the next.“bridge”Therefore, it occupies an important position in the textile field.

Carding machines are used to process cotton fibers and chemical fibers and belong to textile machinery. According to the spinning process, carding is an important process. The front process of the carding machine is the opening and cleaning machine, and the latter process is the drawing frame (carding process) or the sliver coiler (combing process).

Grinder A spinning machine that turns fiber strands into rovings. The main function is to draft and twist, and to wind the roving into a certain package to meet the processing requirements of the spinning frame. Since the lap rollers hold the cotton and rely on the cotton sheet, the holding surface is combed to the front of the pile, gradually changing the straw formation.

The high-speed rotation of the licker-in to perform a severe blow to the cotton will be pierced from the upper and middle cotton serrations and gradually decrease in depth, to be divided into the cotton, the serration teeth top side Li and combing friction contact with the fibers. When the friction is greater than the holding force of the fibers or the fibers proceed horizontally, the fibers or fiber bundles are separated from the serrations. L A carding roll section and relatively thin sentence here, characterized by the state of grip, splitting and combing in combating fibers.

We should not allow too much fiber cell damage during the card opening process in order to keep the linters relatively low. After carding by the licker-in, most of the fibers are in the state of single fiber development, and the weight passing percentage of the cotton bundle accounts for about 15-2.5%, but the short thread is about 3-5% higher than the cotton lap linter. A necessary condition for the carding grip of the carding machine is to give the cotton roller and a constant layer of cotton.

Increases grip, often used to increase the pressure of cotton roller square stations. The pressure on the drum is insufficient, and the sawtooth is used before the cotton whiskers are completely combed, which affects the quality of the strip, and in severe cases, a large number of cloud spots will appear. But the pressure is high, which increases the mechanical wear, and causes the deformation of the cotton roller, and the central pressure is low, which weakens the grip of the cotton layer in the middle of the Laura.

Different diameters have different stiffness (degree of elastic deformation under external load), and under the same pressure, the deflection (bending) of each point of the working part of Laura is also different. When the pressure is 400kg, the deflection test is carried out on cotton feed rollers z with diameters of 70mm and 75mm. The maximum deflections of the two feed rollers are 0.94mm and 0.48mm, respectively, and the former is almost twice that of the latter. A cotton roll with a diameter of 57 mm was operated under the above pressure, and the quality of the cotton web has been found to deteriorate.

Therefore, the pressure on cotton rollers of this diameter is usually limited to 200-350 kg. The diameter of the cotton roller of an A1B6 carding machine is 70mm, and the general use pressure is 380-540kgf (to the weight of the cotton roller).


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