Yarn guiding godet with magnetic bearings
AssigneeBarmag AG
InventorsThomas Koch, Heiner Kudrus
Life of this patent
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Abstract
A godet for guiding at least one advancing yarn in a yarn processing operation. The godet comprises a tubular casing which is mounted for free rotation on a support by means of a plurality of bearings. At least one of the bearings is a radially operative magnetic bearing, which comprises a rotating part and a stationary part attached to the support, with a bearing gap formed between the parts. The stationary part includes at least one pole element with an excitation winding, and the rotating part is made of at least one laminated component of a magnetizable material which is fixed on the inner side of the tubular casing. The pole element and the laminated component cooperate for guiding a magnetic flux.
Claims13
A godet for guiding at least one yarn on a circumferential surface thereof, comprising
- an elongate support which defines a central axis,
- a tubular godet casing,
- a plurality of bearings rotatably mounting said tubular godet casing upon the support for rotation about said central axis,
- at least one of said bearings comprising a radially operative magnetic bearing which comprises a stationary part mounted to the support and a rotating part mounted to the casing so as to form a bearing gap between the rotating and stationary parts, and
- wherein the stationary part comprises at least one pole element having at least one excitation winding, and wherein the rotating part includes a separate component of a magnetizable material, with the pole element and the separate component cooperating for guiding a magnetic flux.
Dependencies are inferred from the claim text.