Screening device for nail length

The utility model provides a nail length screening device. The nail length screening device comprises a driving mechanism, a first screening roller, a second screening roller and a roller rotating mechanism, the roller rotating mechanism comprises a rotating shaft and a roller fixing mechanism, the rotating shaft is arranged in the roller fixing mechanism, the axis of the rotating shaft coincides with the center axis of the roller fixing mechanism, and the rotating shaft is detachably connected with the roller fixing mechanism; the first screening roller and the second screening roller are detachably connected with the roller fixing mechanism, and one end of the rotating shaft is connected with the output end of the driving mechanism. According to the nail length screening device, the problems that in the prior art, a nail screening device is too complex in structure, only nails of a single type and length can be screened, nails of multiple types and lengths cannot be screened at the same time, and then the s