Sleeve sorting machine

The invention discloses a sleeve selecting machine, and relates to the technical field of sleeve selecting, the sleeve selecting machine comprises a vibration disc, the vibration disc is provided with a material detecting channel for sleeve discharging, the material detecting channel is provided with an alignment distance measuring device, and the alignment distance measuring device comprises an internal supporting structure and an electromagnet which are sequentially arranged on the material detecting channel in the discharging direction; the two laser distance measuring devices are arranged on the inner supporting structure and measure the distance between the two laser distance measuring devices and the outer wall of the sleeve and the distance between the two laser distance measuring devices and the bearing rod on the outer side of the sleeve respectively, the inner diameter of the sleeve is indirectly calculated, and measurement of the inner diameter of the sleeve is achieved. The inlet positions of the