Method for improving inter-wall strength for ultra-large fused deposition 3D printing

Abstract

The invention discloses a method for improving inter-wall strength for ultra-large fused deposition 3D printing. The method comprises the following steps: carrying out layered slicing treatment on a printing model to form N printing layers; planning tracks including an outer wall planning track and a lattice filling planning track for each printing layer, and performing offset setting; executing,by a printer, printing including outer wall printing and lattice filling printing of each printing layer, and combining staggered overlapping printing with a patting compaction device for synchronouscompaction; and determining whether printing of all the printing layers is completed, and if it is detected that printing of the N layers is completed, ending printing. According to the invention, a specific planning track is set to carry out multi-offset setting so as to realize staggered overlapping printing during printing; and a patting compaction device is matched for carrying out printing and compaction operation at the same time; the problem that the inter-wall bonding strength of an ultra-large 3D printing component is insufficient is effectively solved; the XY-direction mechanical strength of the printing component is improved; and the surface air tightness of the printing component is improved.

Description

Technical field [0001] The invention relates to the field of 3D printing, in particular to a method for improving the strength between walls for super-large fused deposition 3D printing. Background technique [0002] In the 3D printing fused deposition technology, the printing components are formed by layer-by-layer scanning and accumulation. It is a layer-by-layer accumulation process from point to line, line to surface, and two-dimensional to three-dimensional. The printed component requires a lot of scanning. Therefore, a reasonable scan path is very important. [0003] Fused deposition 3D printing relies on the layer-by-layer accumulation of polymer materials to reduce the dimensionality of three-dimensional objects to two-dimensional. In addition to the mechanical properties of the material itself, the mechanical properties of the printing member in the XY direction are also related to the gaps between the multilayer outer walls of the printing member. In the printing path o...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a method for effectively solving the problem of insufficient bonding strength between the walls of super-large-scale 3D printing components, and improving the mechanical strength of the printing components in the XY direction, and increasing the surface airtightness of the printing components. Method for improving interwall strength by large-scale fused deposition 3D printing

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