A dual-head 3D printer that can rotate and switch print heads

Abstract

The invention discloses a double-head 3D printer capable of rotating and switching printing heads, which is characterized in that it comprises a fixing plate, a mounting plate arranged on the fixing plate, and a first printing head installed side by side on the mounting plate and the second print head; the fixed plate is provided with a fixed shaft, and the mounting plate is rotatably connected to the fixed shaft with the axis of the fixed shaft as the center line of rotation; the first print head The second printing head is located on the lower left side of the fixed rotating shaft, and the second print head is located on the lower right side of the fixed rotating shaft; the double-head 3D printer also includes a driving mechanism that drives the mounting plate to rotate along the fixed rotating shaft. The invention drives the mounting plate to rotate through the driving mechanism, and realizes the structure that the height of the double print heads can be adjusted up and down relative to each other, and always ensures that the working print head is at a lower position, and the non-working print head is at a higher position. The print head will not affect the surface of the formed workpiece, which improves the printing quality.

Description

technical field [0001] The invention relates to a 3D printer based on FDM fusion deposition technology, in particular to a double-head 3D printer capable of rotating and switching printing heads. Background technique [0002] FDM fused deposition 3D printing technology is currently the most widely used technology. Many consumer-grade 3D printers use this printing process. It is relatively easy to implement and the cost is low. FDM fusion deposition is that the heating head heats the hot-melt material (such as ABS, PLA, nylon, wax, etc.) to a critical state, making it appear in a semi-fluid state, and then the heating head moves along the two-dimensional geometric trajectory determined by CAD under software control At the same time, the nozzle extrudes the material in a semi-fluid state, and the material solidifies instantly and rapidly to form a thin layer with a contour shape. [0003] For complex hollow parts and parts with long cantilever, the parts need to be supported ...

AI Technical Summary

Problems solved by technology

First of all, due to the same height of the two wire outlets during the printing process, they will contact and collide with the formed surface respectively. Although the accuracy is not greatly affected, it will destroy the generated surface. In severe cases, the unfinished parts will be damaged. knocked down, so that printing cannot continue

Secondly, under the effect of high temperature on the non-working wire outlet during printing, a small amount of printing material will accumulate at the wire outlet, and it will also be coated on the formed surface during the printing process, which seriously affects the surface quality of the workpiece.

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