Adjustable fine carving base plate

The utility model relates to the technical field of engraving base plates, and discloses an adjustable engraving base plate which comprises a main body, a fixing mechanism is arranged in the main body, the main body comprises a shell, the fixing mechanism comprises a bottom plate, a lead screw is rotationally arranged in the bottom plate, fixing blocks are arranged on the two sides of a rod body of the lead screw in a threaded and sleeved mode, and the fixing blocks are connected with the shell. A first air rod is fixedly arranged at the upper end of the bottom plate, a supporting plate is arranged at the upper end of the first air rod, connecting blocks are fixedly arranged on the two sides of the upper end of the bottom plate, an air cylinder is fixedly arranged at the position, close to the upper end, in one of the two connecting blocks, and a piston is slidably arranged on one side in the air cylinder. A supporting rod is fixedly arranged on one side of the interior of the piston, and a pressing rod is fi