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Carding machine feeding length

Author:Xinjinlong Machinery-Fabric Recycling Machine Manufacturer

The number of teeth of the cotton-painted ratchet mainly used in the carding machine is 10 teeth and 12 teeth, and the central angle corresponding to each tooth is 36. 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.

The structure of the double twisting unit of the double twisting machine mainly includes the spindle braking device, the spindle part of the double twisting machine, the yarn winding device, and the special device of the double twisting unit. During the spinning process of the spinning frame, the semi-finished roving or sliver is drafted, twisted, and wound into a spinning machine. The combed sliver and the needle-carding machine combine the sliver, the needle row is drafted to improve the sliver structure, and the roving is further spun into spun yarn on the ring spinning frame, which is the main spinning machine. and 300 (both the child exhausts the shell to swing an angle, but is larger than one of the dichotomous problems through the swing angle).

The upper feeding roller and the outer diameter are 19 mm, according to which it can be calculated that the corresponding feeding length of the enterprise is 2. In fact, due to the fact that each tooth of the upper and lower transfer rollers has a deep groove movement, under pressure, the feeding With the cotton batt jaws exposed between the two quiet grooves, the output from the feed roller, the bend will be relatively straight, so that the actual length of the cotton sheath is longer than the calculated longer diameter of the press roller. The ratio of the coefficients between the two is called the roller groove, which is the magnitude of the change in pressure with the thickness of the batt, usually 1.10 --- 1.15. A small number of common and heavy pressure conditions are swept, expect 1.15.

In this case, the actual length of cotton when tooth 10 is 5.97x1.15 = 6.86mm when tooth F12 is 4.97x1.15 = 5.72Hz mm. Under normal production conditions, the amount of cotton supplied by the take-up roller should be adapted to the amount of cotton supplied by the supply roller. It is generally believed that the tension increase between the two and the drafting mechanism should be in the range of 1.00---1.04. In the case that the tension of the small roll can be too loose, the tension should be small. A201B type comber's take-up roller and diameter are 70 mm, when the ratio of feeding length is 6.86 and 5.72 mm, respectively, the number of teeth K that the pawl on the 75-tooth ratchet should pass over is calculated by theoretical analysis. The enterprise should be z for Wanqi, if Z7 takes 49 teeth, the number of teeth should be 5.06; for word 7, if Tori takes 50 teeth, the number of teeth should be 4.14.

Therefore, when the process design is equipped with 10 cotton ratchets, each of the 75 ratchets supports 5 teeth, I12 teeth to the cotton ratchet supports 4 teeth. Due to the difference in the groove coefficient, each factory also needs to adjust the Z7J appropriately to control the tension of the small roller. In production practice, it is customary to call 5 teeth x 10 teeth as long cotton, and 4 teeth x 12 teeth as short cotton.

The feeding length depends on factors such as fiber length, small roll preparation process, and basis weight. Long feed length, the comber output will increase, but the carding burden is heavier. And it also affects the uniformity of the cotton web.

Therefore, the length of cotton can generally only be increased when the fiber length is processed, the volume is small, the quantitative light, and the preparation process is good.


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