A light-curing 3D printer

Abstract

The invention relates to the technical field of 3D printing equipment, and discloses a light-curing 3D printer, which includes a forming platform, a material box, and a boundary plate. The bottom of the plate is provided with an energy absorption bag, the boundary plate is filled with liquid, and the energy absorption bag is communicated with the boundary plate. In this light-curing 3D printer, the amount of resin contained in the material box is always in a small state, which reduces the pressure on the bottom release film and reduces its deformation. Secondly, the energy-absorbing capsule at the bottom of the boundary plate has high energy absorption It can quickly calm the liquid level and reduce the impact on the molding. In addition, the distance between the molding platform and the molding layer can be judged by observing the liquid level in the tube, so as to ensure the consistency of each zero adjustment and improve the molding accuracy. On the other hand, the boundary plate also limits the maximum displacement of the forming platform, which can protect the printer from being crushed.

Description

technical field [0001] The invention relates to the technical field of 3D printing equipment, in particular to a light-curing 3D printer. Background technique [0002] Light-curing 3D printing technology mainly includes DLP technology, SLA technology and LCD technology. Their working mechanisms are inseparable from the process of imaging, demolding, and stacking of the resin tank release film. In order to facilitate the release of photosensitive resin products, it is necessary to The bottom of the material box is covered with a release film to reduce the adhesion of the photosensitive resin on its surface. [0003] The release film is located at the bottom of the material box, and the gravity of the resin mainly contained in the process of photocuring the product will cause the deformation of the release film and affect the molding accuracy of the product. Further, during molding, the cured layer will peel off. During the replenishment process with the next layer to be cure...

AI Technical Summary

Problems solved by technology

[0003] The release film is located at the bottom of the material box. During the process of light curing the resin, the gravity of the resin will cause the deformation of the release film and affect the molding accuracy of the part. Furthermore, during the molding process, the peeling of the cured layer During the feeding process with the next layer to be cured, the resin liquid level will fluctuate, which will aggravate the deformation of the release film and further affect the accuracy of the part

[0004] Secondly, before 3D printing, the leveling work is very important. In the existing leveling process, the conventional method uses A4 paper to slowly adjust the forming platform, and judge whether it reaches the zero position according to the resistance of pulling out the A4 paper. On the one hand, the adjustment The result varies from person to person, and it is highly random, which affects the molding accuracy. On the other hand, if the adjustment is too fast, the printer will be damaged.

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