Self-adaptive flow control melt extrusion additive manufacturing device and method

The invention discloses a melt extrusion additive manufacturing device and method with a self-adaptive flow control function. The device comprises a feeding speed control mechanism, a melt discharging mechanism, a printing nozzle, an intelligent visual recognition module and a control center. The feeding speed control mechanism comprises a worm driving motor, a lifting mechanism, a screw driving motor and a feeding screw, the worm driving motor is used for controlling the lifting of the lifting mechanism, and the screw driving motor is arranged on the lifting mechanism; the lower end of the screw driving motor is connected with the upper end of the feeding screw, the lower end of the feeding screw is arranged in a charging barrel of the fusion discharging mechanism, and the intelligent visual identification module is used for capturing an image of a material extruded by the printing nozzle and identifying the printing width; the control center is used for controlling the feeding speed control mechanism in rea