Device and apparatus with magnetic thread-guide for winding a thread onto cylindrical supports
AssigneeSp. El. s.r.l.
InventorsLaciano Franzolini, Stefano D'Amicis
Life of this patent
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Abstract
Thread-guiding device for apparatus for winding a thread onto a support rotatable by associated actuating means, at least one element for receiving and guiding the thread to be wound, the element for receiving and guiding the thread to be wound being integral with a thread guiding device of the magnetic/electromagnetic.
Claims28
Apparatus for winding a thread onto a support rotatable by associated actuating means, comprising at least one element for receiving and guiding the thread to be wound, integral with magnetic support means, said apparatus also comprising means for generating a fixed magnetic field able to interact with the magnetic field of the thread-guiding device so as to produce movement thereof in a direction parallel to a longitudinal axis of the magnetic support wherein opposed N/S poles of the support means are oriented along a direction orthogonal to displacement direction of the magnetic support means, wherein said means for generating a fixed magnetic field comprises asymmetrical pole shoes around which an electrical conductor is wound.
Apparatus for winding a thread onto a support rotatable by associated actuating means, comprising:
- at least one element for receiving and guiding the thread to be wound, integral with magnetic support means;
- means for generating a fixed magnetic excitation field having flux lines able to interact with the magnetic field of the thread-guiding device so as to produce movement thereof in a direction parallel to a longitudinal axis of the magnetic support wherein opposed N/S poles of the support means are oriented along a direction orthogonal to displacement direction of the magnetic support means;
- means integral with the thread-guiding device and movable together therewith for closing flux lines of the magnetic excitation field, arranged on the opposite side to the latter, relative to the thread guide.
Apparatus for winding a thread onto a support rotatable around a longitudinal axis, comprising:
- at least one element, for receiving and guiding the thread to be wound, including integral support means comprising opposite magnetic poles movable in a displacement direction parallel to the longitudinal axis, said apparatus also comprising means for generating a fixed magnetic field for interacting with the magnetic field of the support means for producing the movement thereof in a direction parallel to the longitudinal axis of the support, wherein the opposed poles of the support means are oriented to establish a magnetic flux along a direction orthogonal to the displacement direction.
A method for moving a support means having magnetic poles inside an apparatus for winding a thread onto a support rotatable around a longitudinal axis, said winding apparatus having a fixed part and a displaceable guiding device comprising the steps of:
- orienting the magnetic poles of the support means in a direction orthogonal to a displacement direction of the guiding device;
- constraining the support means with respect to a movable magnetic means;
- arranging said movable magnetic means close to a fixed magnetic field integral with the fixed part of the apparatus;
- excitating said fixed magnetic field in order to establish flux lines of the fixed magnetic field crossing the magnetic poles of the support means along a direction orthogonal to the direction of displacement of the guiding device so as to produce the movement of the thread-guiding device along said displacement direction between two end reversal points.
Dependencies are inferred from the claim text.