Sizing and coating device of rock slice imitating machine

The utility model relates to the technical field of imitated rock slices, and discloses a sizing and coating device of an imitated rock slice machine, which comprises a rack and a conveying belt on the rack, the front end of the conveying belt is tensioned on the adjusting wheel, the first supporting wheel and the second supporting wheel. An adjusting roller is arranged above the first supporting wheel, and a gap is reserved between the lower end of the adjusting roller and the conveying belt. The adjusting roller is fixed to the middle of the square shaft, and the two ends of the square shaft are inserted into rectangular guide holes in the rack in a sleeved mode respectively. The ends of the square shafts are connected to the corresponding adjusting screw rods in a screwed mode respectively, the adjusting screw rods are rotationally connected to the rack, a worm wheel is fixed to the upper end of each adjusting screw rod, the two worm wheels are meshed with the same worm, the two ends of the worm are rotati