Photocuring 3D printer and printing method thereof

Abstract

The invention relates to the technical field of 3D printing, and discloses a photocuring 3D printer and a printing method thereof.The photocuring 3D printer comprises a stock bin, a light source assembly, a camera shooting mechanism, a controller and an alarm; the stock bin is provided with an accommodating cavity for accommodating a liquid photosensitive material; the light source assembly is arranged on the edge of the opening of the containing cavity and used for forming a preset light spot on the liquid level of the photosensitive material, and the area of the preset light spot is reduced along with descending of the liquid level of the photosensitive material; the camera shooting mechanism is arranged on the stock bin and used for collecting an in-cavity image of the photosensitive material in the containing cavity; the controller is used for receiving the intracavity image and calculating the area of a preset light spot in the intracavity image; the alarm is used for giving out a material shortage alarm when the preset light spot area is smaller than or equal to a preset value. The remaining amount of the photosensitive material in the stock bin is automatically monitored, the labor cost is reduced, and meanwhile printing failure caused by insufficient liquid photosensitive material is avoided.

Description

technical field [0001] The present invention relates to the technical field of 3D printing, in particular to a 3D printing technology. Background technique [0002] Light curing 3D printing is a relatively mature 3D printing technology. Its main principle is as follows: divide the shape of the target part into several plane layers, scan the liquid photosensitive material with a beam of a certain wavelength, and the scanned liquid photosensitive material is cured. , while the unscanned liquid photosensitive material remains in liquid state, thereby obtaining the structure of each plane layer in turn, and finally each plane layer is accumulated to obtain the target part. [0003] It takes a certain amount of time for a light-curing 3D printer to print the target parts, especially when printing some large-sized target parts, which often takes more than a few hours; during this period, if the photosensitive material in the silo is insufficient, the printing will fail. , resulti...

AI Technical Summary

Problems solved by technology

[0003] It takes a certain amount of time for a light-curing 3D printer to print target parts, especially when printing some large-sized target parts, it often takes more than several hours; during this period, if the photosensitive material in the silo is insufficient, printing failure will occur , resulting in a large waste of time and material

[0004] Therefore, when printing with light-curing 3D printers in the prior art, it is often necessary to manually monitor the printing process throughout the process, and to replenish the material in time when the photosensitive material is insufficient, so as to avoid printing failure due to insufficient photosensitive material, but the labor cost of this method is high.

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