Takeup machine for a continuously advancing yarn
AssigneeBarmag AG
InventorJorg Spahlinger
Life of this patent
Estimating the term…
Abstract
A yarn winding machine and a method of winding a continuously advancing yarn to a package. In this process, a rotary blade type traversing apparatus reciprocates the yarn by oppositely driven rotary blades along a curved guiding edge transversely to the direction of yarn advance. The shape of the guiding edge determines the position of the yarn respectively on the guiding rotary blade, so that the yarn is displaced on the package at a predetermined traversing speed. In accordance with the invention, the configuration or shape of the guiding edge can be varied during the winding, so that the traversing speed is decreased or increased.
Claims14
A yarn winding apparatus for winding an advancing yarn onto a rotating bobbin to form a yarn package, and including traversing means for reciprocating an advancing yarn transversely to its advance direction over a predetermined traverse stroke and so as to define a traverse plane, said traversing means comprising
- at least two guide arms mounted for rotation about closely adjacent parallel or coaxial axes so that the rotating arms define closely adjacent parallel planes and the extremity of each rotating arm is adapted to pass along the traverse plane,
- drive means for rotating each of the arms in opposite directions so that one arm moves in a direction toward one end of the traverse stroke and the other arm moves in the opposite direction toward the other end thereof, and
- a yarn guide member mounted on one side of the traverse plane and defining a guide edge which extends in a direction generally parallel to the traverse stroke to thereby guide the yarn and control its traversing speed, said yarn guide member including means for varying the configuration of the guide edge during operation of the traversing means so as to vary the traverse speed.
A method of winding an advancing yarn onto a rotating yarn bobbin to form a cross wound package, comprising the steps of
- traversing the yarn back and forth along the length of the yarn bobbin so as to define a traverse stroke at a predetermined traversing speed, and
- periodically decreasing or increasing the traversing speed within the traverse stroke during the traversing step.
Dependencies are inferred from the claim text.