Jointed plate type box making machine with overturning side frame convenient to adjust

The utility model discloses a jointed board type box making machine convenient to adjust a turnover side frame, which comprises a rack and two adjustable bottom plates respectively arranged on two sides of the rack, one end of each adjustable bottom plate is provided with a fixed support, the end part of each fixed support is provided with a rotating rod driven by a rotating cylinder, the rotating rod is fixedly connected with a turnover support, and the turnover support is fixedly connected with the rack. Sliding seats are arranged on the two sides, relative to the overturning support, of the rotating rod respectively, overturning side frames are fixed to the sliding seats, sliding bases are arranged at the two ends of the adjustable bottom plate respectively, clamping grooves matched with the two sides of the bottoms of the sliding seats in a clamped mode are formed in the ends of the sliding bases, sliding blocks are arranged at the bottoms of the sliding bases, and first forward and reverse threaded rods