Knife sharpener of cloth cutting machine

The utility model discloses a knife sharpener of a cloth cutting machine, and belongs to the technical field of cloth cutting machines. The bearings of the knife sharpener of the cloth cutting machine comprise the first bearing and the second bearing, one side of the interior of the mounting groove is connected with the first bearing in an embedded and matched mode, the second bearing is mounted at the position, located on one side of the first bearing, of the interior of the mounting groove, and the adjacent edges of the first bearing and the second bearing are tightly attached. A third bearing is connected to the side, away from the bearing seat, of the inner side of the threaded rod in an embedded fit mode. The first bearing and the second bearing are installed in the bearing seat, the third bearing is installed in the threaded rod, connection and rotation of the center shaft are facilitated through the three bearings, the first bearing and the second bearing are installed at the front end of the center sh