Bottom brushing machine

The utility model relates to the technical field of ceramic production, and particularly discloses a bottom brushing machine which comprises a frame body, a first conveying belt, a second conveying belt, a first guide assembly, a second guide assembly, a driving device, a first bearing, a second bearing, a third bearing, a first main shaft, a second main shaft, a first belt wheel, a second belt wheel, a first gear, a second gear and a first transmission belt. A first guide assembly and a second guide assembly are installed at the front end and the rear end of the frame body respectively, the first main shaft is rotatably installed on the frame body, the first bearing and the second bearing are installed on the first main shaft respectively, the first bearing is a two-way rotating bearing, and the second bearing and the third bearing are one-way rotating bearings respectively. The bottom brushing machine solves the problems that in the prior art, a bottom brushing machine generally only has the bottom brushing