| 摘要 |
The invention relates to a yarn piecing method and apparatus for an open-end spinning machine. According to the method of the present invention, the rotor is braked when the yarn breaks for reducing its rotational speed, while the feed roll which has stopped its rotation is rotated for a short time, so that the fiber of short length unfit for yarn piecing is supplied into the rotor. The supplied fiber is discharged from the rotor, with dust and dirt collected inside the rotor, by a jet of compressed air supplied from an air compressor. The braking force applied to the rotor is then released and the end of the sliver is supplied into the rotor as the latter is accelerated to a number of revolutions suited for yarn piecing. Then, the yarn take-up operation is started again and the speed of the rotor and that of the package are increased to those corresponding with the normal spinning.
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