Large-specific-gravity glue solution dispensing device based on glue solution compensation and control method

The invention discloses a large-specific-gravity glue solution dispensing device based on glue solution compensation and a control method. The large-specific-gravity glue solution dispensing device comprises a dispensing pipe, the lower end of the dispensing pipe is connected with a dispensing pipeline, and a pressure detection sensor is arranged at the position, close to the tail end of a dispensing needle, of the dispensing pipeline; the upper end of the dispensing pipe is connected with an air supply system, and the air supply system is used for providing driving air pressure to drive a glue solution in the dispensing pipe to be extruded and dispensed; and the side edge of the upper end of the dispensing pipe is connected with a glue supply system, and the glue supply system extrudes a proper amount of glue liquid into the dispensing pipe according to a pressure value detected by a pressure detection sensor to ensure that the pressure is kept constant. The pressure of the glue solution is detected in real