Slitting device for cement brick production

The slitting device for cement brick production comprises a machining table, a conveying mechanism, side plates, guide plates, fixing plates, a supporting plate, a top plate and a blade, a two-way threaded rod is rotationally installed between the fixing plates, sliding blocks are connected to the outer sides of the two ends of the two-way threaded rod in a threaded mode, and guide rods used for adjusting the rotation angle of the guide plates are installed at the bottoms of the sliding blocks; a through hole is formed in the upper end of the supporting plate; a one-way threaded rod is rotationally mounted at the bottom of the through hole; the blade is movably sleeved with a movable frame, limiting rods are installed at the four corners of the top of the movable frame, limiting plates are installed at the tops of the limiting rods, and the limiting rods are movably sleeved with springs. The bidirectional threaded rod, the sliding blocks and the guide rods are used in cooperation, a passage is formed between