Fused deposition three dimensional printing nozzle and printer

Abstract

The invention discloses a fused deposition three dimensional printing nozzle and a printer. The fused deposition three dimensional printing nozzle comprises a screw machine barrel, a nozzle and screw shaft, wherein the nozzle is arranged at the lower portion of the screw machine barrel, the screw shaft is arranged in the screw machine barrel, the upper end of the screw shaft is connected with a motor shaft through a shaft coupling, the lower half segment of the screw shaft is provided with a thread slot, the upper portion of the barrel body of the screw machine body is provided with branch tubes used for mounting fed filament plasticizing tubes, and the periphery of the screw machine barrel and the branch tubes is provided with heaters. The screw machine barrel is used as a filament fusion and mixing container, the plasticizing tubes arranged in the branch tubes are used as filament inlets, the heaters are used to heat filaments in the plasticizing tubes and the screw machine barrel in order to fuse the filaments, and driving force is generated through screw rotation in order to stir and mix the fused filaments entering the screw machine barrel, push the mixed filaments into the nozzle and realize extrusion molding, so the filaments can be effectively fused and extruded.

Description

technical field [0001] The invention belongs to the technical field of fused deposition three-dimensional printing, and more specifically relates to a fused deposition three-dimensional printing nozzle and a printer. Background technique [0002] Fused Deposition Modeling (FDM) 3D printers use filamentary materials (such as ABS plastic filaments) as processed objects, heat them to a molten state with a heater, and extrude filament materials from the nozzle through the wire feeding mechanism, heating the nozzle Under the control of the computer, according to the cross-sectional profile data of the 3D model, the X-Y plane movement is performed, and the 3D solid is formed layer by layer selectively. Due to its unique technical principle, the fused deposition manufacturing 3D printing process is more suitable for the development of new products in the household, office supplies and mold industries. In addition, it is also widely used in the manufacture of 3D solid models in medi...

AI Technical Summary

Problems solved by technology

Due to the small driving force generated by the plunger nozzle system, the phenomenon of non-spinning often occurs and seriously affects the forming accuracy, which is not conducive to its further promotion and use.

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