Method and device for winding yarn onto bobbins in the form of cones in spinning frames
AssigneeSociete Alsacienne de Constructions Mechaniques
InventorJacques Le Chatelier
Life of this patent
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Abstract
The method for winding yarn in the form of a cone onto a bobbin carried by a spindle in a spinning or twisting frame consists in passing the yarn to be wound through a traveler mounted on a revolving ring, in lifting and lowering the ring cyclically around the bobbin in order to form the winding cone, and in producing a cyclic variation in the spindle speed in accordance with the cycle of up-and-down motion of the ring support plate.
Claims9
A method for winding yarn in the form of a cone onto a bobbin carried by a spindle in a spinning or twisting frame, wherein said method consists in passing the yarn to be wound through a traveler mounted on a revolving ring, in lifting and lowering the ring cyclically around the bobbin in order to form the winding cone, said method including the step of varying the spindle speed in relation to the lifting and lowering of the ring with a relative forward displacement in time, between a minimum speed when the yarn is wound onto the apex of the cone and a maximum speed within the range of 1.02 to 1.10 times the minimum speed when the yarn is wound onto the base of the cone.
In a device for winding yarn in the form of a cone onto a bobbin carried by a spindle driven in rotation in a spinning or twisting frame, a traveler ring surrounding the spindle and mounted on a ring support plate, means for imparting a vertical reciprocating movement to the support plate, said traveler ring being a revolving ring, driving means including a speed-changing unit for driving the spindle in rotation, the improvement which comprises means coupling the speed-changing unit with the ring support plate, in which the speed-changing unit is responsive to the height of the traveler for driving the spindle at a speed which varies between 1 to 1.02 and 1 to 1.10 with the maximum speed when the traveler is located at a height in the vicinity of the base of the cone and at minimum speed when the traveler is located at a height in the vicinity of the apex of the cone, and wherein the means for coupling the ring support plate with the speed-changing unit control means provides a relative time displacement or phase shift between the end positions of said ring support plate and the end positions of said speed-changing unit control means.
Dependencies are inferred from the claim text.