A step-by-step splicing 3D printing system and printing method

Abstract

The present invention provides a step-by-step splicing 3D printing system and printing method, including a control system and a 3D printer, the control system is connected to the 3D printer through communication, and the 3D printer includes a fixed platform and an upper end of the fixed platform. A lens fixing column and a printing mechanism, the lens fixing column is provided with a lithography lens corresponding to the position of the printing mechanism, an XY-axis movement platform is arranged between the printing mechanism and the fixed platform, and the XY-axis movement The platform includes an X-axis motion mechanism and a Y-axis motion mechanism. Setting up the XY-axis motion platform can ensure high printing accuracy while increasing the printing format through step-by-step splicing, and can effectively solve the splicing error in the splicing process.

Description

technical field

[0001] The invention relates to the field of 3D printing, in particular to a step-by-step stitching 3D printing system and a printing method. Background technique

[0002] At present, digital micromirror devices (Digital Micromirror Devices, DMD for short) are usually used in the 3D printing technology based on surface projection micro-stereolithography (DLP). DMD microlens arrays are used to provide exposed images. The size of each microlens in the DMD microlens matrix is ​​generally 7-10um, and the printing accuracy depends on the size of the microlens. In the surface projection micro-stereolithography (DLP) 3D printing technology, in order to further improve the precision to the sub-micron level, the DMD image is generally reduced by optical design, that is, the image reflected by the DMD is processed by the projection objective lens. Zoom out to achieve the purpose of improving printing accuracy. Because after the overall image is reduced, although the...

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