The card clothing used in high-yield carding machines has developed from a traditional Chinese elastic card clothing company to a wide range of social studies using different metal card clothing. 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. 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). 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. At present, the cover is still wrapped with elastic card clothing or semi-rigid card clothing. MCC has many advantages: gripping force wear on fibers and good carding ability, prevents fiber flakes, reduces backlash, s stuffed flanks, light loads, does not require frequent duplication of needle tips through serrated sheep fire, high wear-resistant bits, Grinding should always be very little, according to different requirements of combing and the action of combing the object in the design and manufacture can be relatively easy to change product specifications, the strength of the large teeth, easy to deform, get suitable for high speed, tight gauge, strong Carding machine requirements.
The metal card clothing company is made of a high-quality ordinary high-carbon steel (T8A, T1OA) or alloy steel (65Mn). i. The name and code of the basic profile element and the basic shape of the metal clothing are shown in Figure 2-20. (1) Working angle a. Setting the saw window at the front end of the fiber movement is subjected to various forces (carding force, air resistance, and the highly uniform characteristics of the fiber containing less heteroatoms that require the design of a metal cylinder with clothing.
1. The density of the sawtooth structure has a great influence, and the longitudinal window distance between N640 teeth/(25.4 mm) is 1.25 mm. 2. Use the larger working angle of the linear face of the window (78°). 3. The bottom is thinned, and the depth of the window groove has a greater impact, which is not only conducive to the absorption of students, enhances the ability to evenly mix learning, but also reduces the wrapping tension and wrapping deformation, so that it has a relatively high surface structure and shape accuracy.
(3) In the design measures for carding cotton-type chemical fibers with a large angle of fine teeth, although the coefficient of friction between chemical fibers and steel windows is large, the transmission resistance of chemical fibers is large during the carding process, but the zigzag teeth are easily entangled, but it often cannot guarantee the full carding of chemical fibers. In order to eliminate these defects, the following measures should be taken: 1. The suitable dentition c is 575 teeth/(25.4 mm), and the working angle is (78°). 2. Facial with large negative angle (-50°) in the lower part, the bilinear change of male form back, can only increase the resistance of sinking, floating and promote the release of fibers.
(4) Carding design of medium-length chemical fiber When carding the Xinjinlong metal card clothing of medium-length chemical fiber in the enterprise, attention should be paid to the requirements of different angles and densities at the same time. Figure 1 is the longitudinal tooth depth alternating arrangement of teeth (with a tooth height difference of 0.3 mm). 2. The high tooth adopts the secondary education working angle, and the low window adopts a larger working angle.
3. Overall, deep and shallow windows remain“quiet”The N value (average longitudinal tooth pitch is 1.3mm) ensures a good carding effect. Release and transfer fibers.