This paper presents a methodology for the analysis of mechanical doffing comb devices taking off the web in carding machines. The continuous model of the doffing comb shaft (a beam performing coupled bending—torsional vibrations) and the discrete model of the doffing device with the use of finite element method are presented. The results of the analysis using the calculation model are compared with the results of the experiment, affirming the correctness of the adopted assumptions. Criteria of the comb device evaluation are formulated. On the basis of the results of computer simulations, diagrams of comb devices' selection to rework a given range of fibers are described.
Oscillating Mechanical Device, in Particular a Card Web Comb for a Textile Machine, in which Oscillations are Sustained by Means of a Single-phase Induction Motor, US patent 5872440.
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