Mechanical preheating type 3D printing head

Abstract

The invention discloses a mechanical preheating type 3D printing head, and belongs to the technical field of 3D printing technology. According to the mechanical preheating type 3D printing head, in order to enable the bonding between adjacent slices in the fused deposition type 3D printing process to be stronger and a printed model to be firmer, the mechanical preheating type 3D printing head adopts the technical measures that an ironing board is arranged on a printing head of a 3D printer, is connected to a heating source and is driven by a motor, the motor is connected with a computer, and the computer drives the ironing board to iron the surface of the previous printed slice in front of the moving direction of a spray head (relative to the moving direction of the model) through the motor so that the surface of the part of the model can be heated so as to be better fused and bonded together with material wires. The mechanical preheating type 3D printing head has the advantages that the ironing board is arranged on the printing head of the 3D printer and is connected to the heating source, and therefore the ironing board can have a certain temperature; the computer drives the ironing board to iron the surface of the previous printed slice in front of the moving direction of the spray head through the motor; and the ironing board rapidly heats the shallow surface of a place where the spray head sprays the wires so that the place can be better fused and bonded together with the material wires conveniently.

Description

technical field [0001] The invention belongs to a technical field of 3D printing technology. Background technique [0002] 3D printing can magically transform the virtual image on the computer screen into the real material world, so it is being used more and more widely. At present, fused deposition (FDM) is widely used in 3D printing technology, and the cost of 3D printing machines and consumables is relatively low. But it is also a technology with lower printing accuracy and looser models. Its working principle is to rely on the nozzle to spin the filaments, and cooperate with the positioning and movement of the heating table to realize the forming of hot-melt accumulation. The roughness and configuration accuracy of the workpiece it punches are not ideal. The fused deposition 3D printing in the prior art relies on electric heating of the nozzle, and then the wire is powerfully fed to the heated nozzle through the wire feeding mechanism for hot extrusion and spinning, a...

AI Technical Summary

Problems solved by technology

If the status quo of the existing technology is not changed, the fused deposition 3D printing method will not be able to print a large model that meets the requirements and has high strength.

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