Continuous 3D fiber printing sprayer with ultrasonic vibration and auxiliary dipping function and application method of continuous 3D fiber printing sprayer

The invention discloses a continuous 3D fiber printing sprayer with an ultrasonic vibration and auxiliary dipping function and an application method of the continuous 3D fiber printing sprayer. The continuous 3D fiber printing sprayer comprises a fixed base, a connecting rod component, an extrusion component, an ultrasonic component, a cooling fan and a cooling device, wherein the fixed base comprises an upper top plate, a lower top plate and a polyhedral frame installed between the upper top plate and the lower top plate; the connecting rod component comprises a vertical connecting rod and springs, wherein the vertical connecting rod is used for connecting the upper top plate with the lower top plate; the springs are located at the two ends of the connecting rod and between the connecting rod and the frame; the extrusion component comprises an extrusion nozzle, a heating block, a heating unit, a cooling pipe, a throat pipe and a Teflon pipe, which are integrally mounted on the fixed seat; the ultrasonic comp