| 摘要 |
A device and method for winding conical bobbins with yarn withdawn at constant speed from individual spinning units, and comprising: a deflecting roller, or similar element, which is connected to and moved backwards and forwards by a swinging arm which by storing and returning the yarn compensates for the different speeds at which the yarn is collected on the conical surface of the bobbin under formation wherein yarn is drawn into the storage position and is then released from this storage position, (i.e. returned). This returning operation releases the yarn from its storage position and replaces it (returns it), to its normal feed path; two proximity sensors positioned to define the regular range of swing of the yarn storage and return arm; an electronic control unit arranged to receive an electrical signal or several electrical signals provided by the proximity sensors when the yarn storage and return swings stray outside the regular range and arranged to generate, when said signals occur, an electrical control signal which activates a pressure variator; and a pressure variator which increases or decrease the pressure on a disc yarn tensioner in order to return the storage swing to within the range of values corresponding to regular storage.
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