Gypsum plaster board slitting mechanism

The invention discloses a paper surface gypsum board slitting mechanism, and relates to the technical field of board slitting. According to the paper surface plasterboard slitting mechanism, by arranging a second lead screw and clamping plates, the distance between the clamping plates can be adjusted according to paperboard plasterboards of different sizes, then the positions of the plasterboards can be fixed by the four clamping plates, and the plasterboards can be pressed downwards in the cutting process through a pressing assembly; the situation that the gypsum board tilts after being cut off and separated is avoided, manual pressing is not needed through joint cooperation of a clamping plate and a pressing assembly, an operator is prevented from getting close to a cutter, a fan with fan blades opposite in rotating direction is arranged in a cutter protection sleeve, the fan can be driven to rotate through power generated when a transmission shaft rotates, and the cutting efficiency is improved. According