Composite board slitting device

The utility model relates to the technical field of plate cutting, and discloses a composite plate slitting device which comprises a workbench, a cutting mechanism is arranged in the middle of the workbench and comprises saw blades, the number of the saw blades is odd, the saw blades are connected to a rotating shaft in a limiting and sliding mode, and the side face of each saw blade is rotationally connected into an adjusting plate. The adjusting plate is perpendicularly fixed to the bottom of the sliding plate, the sliding plate is slidably connected to the sliding rod, an X-shaped cross rod is hinged to the outer side face of each sliding plate, the ends of the adjacent cross rods are hinged in an up-down corresponding mode, the sliding plate located on the side edge of the workbench is fixed to the end of a transverse plate of the door-shaped plate, and a driving assembly is further arranged on the door-shaped plate and comprises a driving plate. The plate cutting device has the following advantages and e