A method for improving interwall strength in ultra-large fused deposition 3D printing

Abstract

The invention discloses a method for improving interwall strength by ultra-large fused deposition 3D printing, comprising the following steps: layered and sliced ​​printing models to form N printing layers; planning trajectories for each printing layer, including outer wall planning trajectories and crystal grid filling planning trajectory, and offset setting; the printer executes the printing operation of each printing layer, including outer wall printing and lattice filling printing, using dislocation overlapping printing combined with slapping and compacting device for synchronous compaction; determine whether all printing layers are printed, if If it is detected that the N layers have been printed, the printing work will end. The present invention realizes dislocation overlapping printing by setting a specific planning trajectory for multiple offset settings, and cooperates with the beating compaction device to perform compaction while printing, effectively solving the problem of insufficient bonding strength between walls of ultra-large-scale 3D printing components , and improve the mechanical strength of the printed component in the XY direction, and increase the surface airtightness of the printed component.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a method for super-large fused deposition 3D printing to improve interwall strength. Background technique [0002] In 3D printing fused deposition technology, printed components are formed by layer-by-layer scanning accumulation, which is a layer-by-layer accumulation process from point to line, from line to surface, and from two-dimensional to three-dimensional. Printing components require a large number of scans. Therefore, a reasonable scanning path is very important. [0003] Fused deposition 3D printing relies on the accumulation of layers of polymer materials to reduce the dimensionality of three-dimensional objects to two-dimensional and accumulate them. The mechanical properties of the XY direction of the printed component are not only determined by the mechanical properties of the material itself, but also related to the gap between the multi-layer outer walls of the printed ...

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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