Automatic cleaning device for driving roller

The automatic cleaning device comprises a machine table, supporting plates are vertically installed on the two sides of the top of the machine table, a top plate is transversely installed between the two supporting plates, a lead screw is transversely and rotationally installed at the position, between the two supporting plates, of the bottom of the top plate, and one end of the lead screw penetrates through the supporting plates to be connected with a second gear; a lead screw is installed on the machine table, a cleaning assembly is arranged on the lead screw, a rolling assembly is arranged at the position, between the supporting plates, of the lower portion of the lead screw, a motor is installed on the side wall of the machine table, a rotating rod is vertically installed at the output of the motor, and an adjusting gear assembly is arranged on the rotating rod. A rolling brush connected with the bottom of a spring vertically installed in a groove formed in the bottom of a sliding block moves up and down