An Investigation of Air Pressures in the Cotton Carding Machine1

Miller, A.L.; Brown, R.S.; Rusca, Ralph A.

doi:10.1177/004051755802800711

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…In some tests, the air flows at a steady rate for the most part. 12,13 Therefore, we select a small periodic part of this region as the model, to reduce computation.…”

Section: Characteristics Of Cylinder-flat Regionmentioning

confidence: 99%

Three-dimensional numerical simulation of air flow and fiber dynamic in carding region in carding machine

Cheng

Xue

et al. 2019

Textile Research Journal

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Regular cylinder metallic card clothing has a limited carding efficiency. As a result of the limited dimensions, any measurement between the cylinder and flat area is difficult to make. In this study, an approach is first proposed to simulate the flow field and a fiber finite-element model on the moving surface of the teeth and produce a new design of misaligned-teeth card clothing, with the aim of improving the carding efficiency. A comparison is made between regular and misaligned-teeth card clothing types with respect to flow field simulation and fiber mechanical properties. The results show that the force resulting from the tangential velocity between the cylinder and flat is as great as 1.86 × 10−3 N, sufficient to pull fiber out of tufts, and that the tangential velocity (from 3880 to 2500 mm/s) plays a major role in this area, as opposed to the axial velocity (from 0 to 190 mm/s). Through this comparison, the misalignment design can result in a different tangential velocity distribution from that of traditional card clothing, which helps fibers between two lines of teeth move into neighboring lines of teeth, thereby increasing the likelihood that fibers will be carded. For fiber mechanical analysis, different air forces are loaded on fibers. This comparison shows that for fibers in the channel, the misalignment can help fibers move toward the teeth. Therefore, this misaligned-teeth card clothing is thought to prove more effective in practice.

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“…In some tests, the air flows at a steady rate for the most part. 12,13 Therefore, we select a small periodic part of this region as the model, to reduce computation.…”

Section: Characteristics Of Cylinder-flat Regionmentioning

confidence: 99%

Three-dimensional numerical simulation of air flow and fiber dynamic in carding region in carding machine

Cheng

Xue

et al. 2019

Textile Research Journal

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show abstract

“…Extensive aerodynamic studies [ 17] revealed that carding is accomplished through mechan--ical action and not through air action. Further studies led to the conclusion that the essential requirement for carding is that the tufts and unopened groups of fibers deposited on the cylinder by the lickerin encounter a resistant force sufficient to separate and spread the fibers over the entire area of the cylinder surface before reaching the doffer.…”

Section: Granitlar Cardmentioning

confidence: 99%

Recent Improvements in Textile Processing Machinery and Methods

Rusca

1960

Textile Research Journal

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“…the differences are small within the recommended range of 60-100 granule size.Installation of the 3-NI-Ite material on the surface of the plates must be accurately controlled to prevent4 The mention of trade names does not imply their endorsement by the Department of Agriculture over similar…”

mentioning

confidence: 99%