Abstract
The sliver was separated into small fiber assemblies using opening device with combing roller as well as air suction, and then the effects of sliver thickness, input roller speed, surface speed of combing roller, and air velocity on the weight of separated fiber assemblies were studied.
The sliver having periodic irregularity was separated, and the weights of fiber assemblies were detected and recorded continuously. The variations in their weight were statistically analysed into auto and cross correlation functions.
The results obtained are as follows:
(1) In the case of using both combing roller and air suction, the weights and their variations are smaller than when only air suction is used.
(2) The thicker the input sliver is, the greater the weight of separated fiber assemblies becomes. The surface speed of feed roller makes the same effect as the thickness of input sliver. (Fig. 3, Fig. 4)
(3) Though the surface speed of combing roller has little effect on the weight of separated fiber assembly, the velocity of suction air has greater effect on it. (Fig. 5, Fig. 6)
(4) Separating sliver generates the additional random variation on the output, so relatively the ratio of periodic variation to total variation decreases, especially by using opening device without combing roller works effectively. (Fig. 11)
