Patent ID: 6311920
Filing Date: 2001-11-06
Classification: B65H

Abstract:
A method of winding a package, the method comprising the steps of:(a) supplying a continuous length of material to a bobbin having a lengthwise axis;(b) rotating the bobbin around the lengthwise axis;(c) winding the supplied continuous length of material around the periphery of the rotating bobbin to form a package;(d) traversing the supplied continuous length of material reciprocatingly between ends of the package while winding the same therearound;(e) determining the rotational velocity of the rotating package while winding the length of material therearound;(f) controlling a traverse frequency the supplied continuous length of material is reciprocatingly traversed between the ends of the package while winding the length of material therearound;(g) winding the length of material on the package at a first actual winding ratio adjacent a first integer winding ratio;(h) decreasing the traverse frequency in response to decreasing rotational velocity of the package whereby the first actual winding ratio parallels adjacent the first integer winding ratio; and(i) step increasing the traverse frequency whereby the first actual winding ratio step decreases to a second actual winding ratio adjacent a second integer winding ratio, wherein:each actual winding ratio corresponds to a ratio of the determined rotational velocity of the package to the determined traverse frequency;a ratio of the first actual winding ratio and the adjacent first integer winding ratio defines an integer offset ratio; anda ratio of the second actual winding ratio and the second integer winding ratio corresponds to the integer offset ratio.