Three-dimensional printing method

Abstract

The invention relates to the technical field of three-dimensional printing, in particular to a three-dimensional printing method.The three-dimensional printing method is applied to printing equipment, the printing equipment comprises a curing lamp, a printing head and a platform, the curing lamp and the printing head are located above the platform, and the three-dimensional printing method comprises the steps that the printing head is controlled to spray a printing material to the platform to form a target model and a light blocking block;the light blocking block is used for blocking light rays emitted by the curing lamp from being reflected to the printing head. The light blocking block is printed by the printing head while the target model is printed, part of light emitted by the curing lamp is blocked by the light blocking block from being reflected to the printing head through the platform, so that a risk that spraying holes of the printing head are blocked or materials attached to the surface of the printing head are cured and difficult to clean is reduced to a certain extent;therefore, the service life and the printing precision of the printing head are improved.

Description

technical field [0001] The present application relates to the technical field of three-dimensional printing, in particular to a three-dimensional printing method. Background technique [0002] 3D printing technology is a process of rapid prototyping, which uses layer-by-layer accumulation to produce a 3D model layer by layer. The existing disc-type three-dimensional inkjet printer includes: a rotatable platform, a printing head moving radially along the platform, and a curing lamp fixedly arranged along the radial direction, wherein the moving direction of the printing head and the extending direction of the curing lamp are collinear. Since the distance between the print head and the curing lamp changes with the movement of the print head, there is a situation where the distance between the print head and the curing lamp decreases, and at this time the light emitted by the curing lamp is easily reflected to the print head through the platform, On the one hand, the material ...

AI Technical Summary

Problems solved by technology

Since the distance between the print head and the curing lamp changes with the movement of the print head, there is a situation where the distance between the print head and the curing lamp decreases, and at this time the light emitted by the curing lamp is easily reflected to the print head through the platform, On the one hand, the material in the spray path of the print head will solidify and cause the nozzle hole to be blocked; on the other hand, the material attached to the surface of the print head will solidify, making it difficult to clean the print head, and the service life of the print head will also be shortened

Moreover, as the distance between the print head and the curing light and the platform increases, within a certain range, the curing light reflected to the print head will also increase, that is, as the height of the printed model increases within a certain range, the amount of curing light reflected to the print head will increase. The greater the amount of curing light, the easier it is to affect the print head, causing the printing accuracy of the printed model to decrease with the increase in height, thus affecting the printing quality

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