Method and apparatus for winding conical cross-wound coils or bobbins with constant thread-feeding velocity
AssigneeW. Schlafhorst AG & Co.
InventorHans Raasch
Life of this patent
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Abstract
Method of winding conical cross-wound coils at constant thread feed velocity wherein compensation is provided by a storage device for the varying winding speeds from the larger to the smaller diameters of the coils which includes setting a thread storage device in zero position thereof, wherein no thread is being stored, after alternative occurrence of a coil change and a thread break; initially holding with an auxiliary thread guide a thread that is to be wound into a coil; advancing a thread guiding member in a direction from the larger toward the smaller diameter ends of the coil and, after releasing the thread from the auxiliary thread guide, taking over the thread with the thread guiding member.
Claims7
Method of winding conical cross-wound coils at constant thread feed velocity wherein compensation is provided by a storage device for the varying winding speeds from the larger to the smaller diameters of the coils which comprises setting a thread storage device in zero position thereof, wherein no thread is being stored, after alternative occurrence of a coil change and a thread break;
- initially holding with an auxiliary thread guide a thread that is to be wound into a coil;
- advancing a thread guiding member in a direction from the larger toward the smaller diameter ends of the coil and, after releasing the thread from the auxiliary thread guide, taking over the thread with the thread guiding member.
Device for carrying out the method of winding conical crosswound coils at constant thread feed velocity comprising an auxiliary thread guide located at each winding station of a textile machine, said auxiliary thread guide being adjustable at start-up of the winding method to an engageable position wherein a thread is guided thereby for winding on a coil and to a disengageable position wherein the thread is transferred by said auxiliary thread guide to a thread guide member, said auxiliary thread guide in said engageable position thereof being disposed so as to direct the thread to a location along the length of the coil at which the peripheral velocity of the coil is equal substantially to the velocity of feed of the thread.
Dependencies are inferred from the claim text.