Multi-spray-head 3D printer and cooperative printing method thereof

Abstract

The invention discloses a multi-spray-head 3D printer and a cooperative printing method thereof. The multi-spray-head 3D printer comprises a movement mechanism and a control unit, wherein the movement mechanism comprises a machine body, and an XY movement assembly and a Z-axis movement mechanism fixed on the machine body, and a printing platform positioned on the Z-axis movement mechanism; N X-axis movement mechanisms which move independently relative to each other, N Y-axis movement mechanisms which move independently relative to each other and N wire feeding mechanisms which work independently relative to each other are arranged on the XY movement assembly; N is greater than or equal to 1, and N is an integer; all spray heads share the printing platform; and the X-axis movement mechanisms and the Y-axis movement mechanisms are arranged in parallel along a Y-axis guide rod. According to the multi-spray-head 3D printer, the plurality of the spray heads share one printing platform to carry out partitioned cooperative printing; software realizes seamless connection among partitions by virtue of reasonable path planning; and the spray heads are prevented from interfering from one another, so that 3D printing efficiency of a large preparation part is improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing devices, and in particular relates to a 3D printer and a printing method based on the principle of melt extrusion molding (FDM) and having a plurality of spray heads working in partitions. Background technique [0002] The current 3D printing technology adopts layer-by-layer (point-by-point) printing and processing methods, which leads to the mutual kidnapping of printing speed and printing accuracy, and a phenomenon called "3D printing paradox" appears. If the accuracy is improved, the speed will inevitably decrease. On the contrary, if the speed is increased, the accuracy will inevitably decrease, and the cooperative work of multiple nozzles is an effective way to solve this problem. Existing multi-nozzle 3D printers work alternately with multi-nozzles in time-sharing to realize 3D printing of multi-material and multi-color, because there is no solution to the independent movement structure ...

AI Technical Summary

Problems solved by technology

[0002] The current 3D printing technology adopts layer-by-layer (point-by-point) printing and processing methods, resulting in the kidnapping of printing speed and printing accuracy, and a phenomenon called "3D printing paradox". If the accuracy is improved, the speed will inevitably be reduced. On the contrary, if the speed is increased, the accuracy will inevitably decrease, and the cooperative work of multiple nozzles is an effective way to solve this problem

Existing multi-nozzle 3D printers work alternately with multi-nozzles in time-sharing to realize 3D printing of multi-material and multi-color. Because there is no solution to the independent movement structure and cooperative working mechanism of multi-nozzles, multiple nozzles cannot print together at the same time, which cannot really improve work efficiency

At present, there are mainly two ways to improve the efficiency of 3D printing. One is to increase the printing speed by reducing the printing accuracy; the other is to increase the printing speed by reducing the internal filling, which leads to changes in the internal structure of the printed part and reduces its strength.

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