Spinning apparatus and control arrangement therefor
AssigneeForschungszenlrum Julich GmbH
InventorKarl Boden
Life of this patent
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Abstract
In a spinning apparatus including a rotatable spindle carrying a package for receiving a yarn from a yarn guide which is arranged in axial alignment with the spindle, a tubular element surrounds the package and the spindle and is floatingly supported by magnetic bearings and a second yarn guide is arranged so to be rotatable within the tubular element and receives the yarn for guiding it onto the package with a winding speed corresponding to the rotational speed difference between the spindle and the tubular element and sensors are arranged adjacent the tubular element for sensing any axial deviation of the tubular element from its desired position which axial deviation is taken as a measure for the yarn tension forces.
Claims13
A spinning apparatus comprising:
- a rotatable spindle, a package mounted on said spindle for receiving a yarn, a first yarn guide arranged coaxially with said package for receiving said yarn, a rotatable radially symmetrical tubular element concentrically surrounding said package, said tubular element being supported at its end surrounding said package by an axially passive radially active magnetic bearing which surrounds said tubular element and, at its opposite end by a radially stable axially instable magnetic bearing, a second yarn guide arranged on the inside of said tubular element so as to be rotatable therewith, said second yarn guide receiving the yarn which, during rotation of said tubular element, abuts its inner surface and guiding it to said package for winding it onto said package with a winding speed corresponding to the speed difference between said spindle and said tubular element, sensors disposed adjacent said tubular element for sensing any axial deviation of said tubular element from its predetermined position, and an electronic arrangement associated with said sensors and receiving therefrom signals corresponding to said axial deviations, said electronic arrangement to amplify said signals to represent tensional forces effective in the yarn and utilize them to control the spinning apparatus.
A spinning apparatus having a rotatable spindle, an electric drive operatively connected to said spindle for driving said spindle, said spindle carrying a package for receiving a yarn, a tubular element surrounding said package and being floatingly supported by a magnetic bearing, said tubular element having a yarn guide for guiding said yarn onto said package, and another electric drive for rotating said tubular element with a rotational speed which is different from that of said spindle, means for determining tension forces effective in said yarn, while said yarn is wound onto said package, from the axial deviation of said tubular element from its desired position, and means for controlling said electric drives so as to generate drive torques providing for predetermined yarn tension forces.
A spinning apparatus having a rotatable spindle, an electric drive operatively connected to said spindle for driving said spindle, said spindle carrying a package for receiving a yarn, a tubular element surrounding said package and being floatingly supported by a magnetic bearing structure, said tubular element having a yarn guide for guiding said yarn onto said package and another electric drive for rotating said tubular element with a rotational speed which is different from that of said spindle, sensors for determining tension forces effective in said yarn while said yarn is wound onto said package, said sensors providing a guide values, and control means receiving said guide values from said sensors for controlling said electric drives so as to provide drive torques which provide for desired yarn tension forces.
Dependencies are inferred from the claim text.