The utility model discloses a limiting device for
polishing a
magnesium oxysulfate board, which relates to the technical field of
magnesium oxysulfate board
processing and comprises an
operating table, a limiting plate is slidably connected to the bottom end of the inner side of the
operating table, and a first sliding groove matched with the limiting plate is formed in the bottom end of the inner side of the
operating table. The limiting plate is slidably connected to the bottom end of the inner side of the operation table through the first sliding groove. By the adoption of the structure, the
magnesium oxysulfate board is placed in the operation table through the discharging port, then the second screw rod is screwed, the second rotating shaft can enable the second screw rod to rotate in situ, the limiting plate can move along with the second screw rod through the first sliding groove, and the limiting plate can effectively clamp and limit the two sides of the magnesium oxysulfate board; and when a user places and polishes the magnesium oxysulfate plates with different widths, the push plate is pushed through the electric push rod, the magnesium oxysulfate plates are pushed through the push plate, then the electric air cylinder is started to pull the rack downwards, and the surfaces of the magnesium oxysulfate plates can be polished through rotation of the
polishing roller.