3D printer having fixed layer continuous printing function and printing method thereof

Abstract

The invention discloses a 3D printer having a fixed layer continuous printing function and a printing method thereof. The 3D printer includes a 3D printing execution mechanism, a fixed layer continuous printing control unit and an extrusion head heating module; the fixed layer continuous printing control unit is used for controlling the extrusion head heating module to preheat an extrusion head to a specified temperature when a fixed layer continuous printing instruction is monitored, controlling the 3D printing execution mechanism to print a positioning identification on a printing platform according to a gcode file of a to-be-repaired model printed at the last time, determining a continuous printing starting layer for a detect part of the to-be-repaired model after the to-be-repaired model is placed onto a position corresponding to the positioning identification, and controlling the 3D printing execution mechanism to start to continuously print from the continuous printing starting layer. Any hardware architecture cannot be changed, circuit costs and circuit size are not increased, the appearance of the whole machine is not affected, an incomplete defect model is subjected to fixed layer continuous printing, and the printing quality and the working efficiency of continuous printing are effectively improved.

Description

technical field [0001] The invention relates to a 3D printer, in particular to a 3D printer and a printing method with a layer-fixed continuous printing function. Background technique [0002] FDM (Fused Deposition Modeling, Fused Deposition Modeling) 3D printers can take hours or days to print a model. If an unexpected power outage occurs during printing, the printer will interrupt printing. If no continuous printing measures are taken, half or even more than half of the models that have been printed in the early stage can only be scrapped, resulting in a lot of waste of consumables and time. [0003] At present, some manufacturers of FDM 3D printers have conducted research to solve the above problems. But they mainly adopt the way of external backup power supply, which undoubtedly greatly increases the hardware cost, volume, and affects the appearance of the whole machine. [0004] The prior art such as the Chinese patent publication CN103921446A discloses a 3D printer ...

AI Technical Summary

Problems solved by technology

When continuing to print after a period of time, since the avatar has been separated from the printing platform, it is necessary to place the avatar on the printing platform again for printing, and when the incomplete avatar is placed on the printing platform again, its horizontal plane It is easy to deviate from the printing position of the avatar model in the last printing, which makes it difficult to achieve accurate alignment between the part of the continuation printing and the incomplete avatar that has been printed, which will lead to the failure of the continuation printing or affect the image after the continuation printing. product quality

On the other hand, when the operator manually repairs the breakpoint trace of the avatar, he can only rely on experience and the naked eye to find the location where the power was cut off on the product after the reprint, which is time-consuming, labor-intensive, and inaccurate

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