3D PRINTER NOZZLE CAPABLE OF ADJUSTING CROSS-SECTIONAL AREA OF EXTRUDED MATERIAL, AND SPEED AND PRECISION CONTROL METHOD THEREOF

摘要

A 3D printer nozzle capable of adjusting the cross-sectional area of extruded material, comprising a material feeding pipeline (604) and a material extruding nozzle (605); the material extruding nozzle (605) is located below the material feeding pipeline (604); the 3D printer nozzle further comprises a peripheral casing (602) and a drive device; the material feeding pipeline (604) is embedded in the peripheral casing (602); the material extruding nozzle (605) is coaxially and fixedly connected below the material feeding pipeline (604); the gravity centers of the cross-section shape of the inner channel (603) of the material feeding pipeline and the inner channel of the material extruding nozzle are located on the same shaft perpendicular to the cross-section of the material feeding pipeline (604) and the inner channel (606) of the material extruding nozzle; the material feeding pipeline (604) rotates around the shaft relative to the material extruding nozzle (605) under the driving of the drive device; for different rotation angles, the shaping areas of the extruded material from the material extruding nozzle (605) have different widths in the same direction so as to adjust the cross-sectional area of spinning nozzle. The 3D printer nozzle controls the speed and precision of printing, and increases the overall printing speed while satisfying the precision requirement.