a 3d printer

Abstract

The invention discloses a 3D printer which comprises a translation printer head for assembling a printing head assembly, the translation printer head is driven by a translation assembly, and the translation assembly is assembled to a printer head assembling platform; the printer head assembling platform is provided with a processing platform for assembling a forming platform; the forming platform is driven by a two-dimensional adjustment assembly to achieve two-dimensional movement in the horizontal direction and the vertical direction; the printing head assembly comprises a printing head and an ascending and descending assembly for driving the printing head to ascend and descend; the two-dimensional adjustment assembly comprises a double-cam drive shaft, the double-cam drive shaft rotates along with a planar cam and a cylindrical cam which is fixed to the double-cam drive shaft, the cylindrical cam pushes a horizontal movement sliding block to conduct horizontal linear movement along linear guide rails moving in the horizontal direction, and the planar cam pushes a vertical movement sliding block arranged in the horizontal movement sliding block in a sleeving mode to conduct linear movement in the vertical direction along linear guide rails moving in the vertical direction; the processing platform is assembled to the vertical movement sliding block through a supporting assembly.

Description

technical field [0001] The invention relates to a 3D printer, in particular to a 3D printer based on the principle of light curing. Background technique [0002] At present, there are many forming principles used in the very popular 3D printing technology, and different principles will produce a series of different equipment; the working principle of the 3D printer equipment based on stereolithography is to lay the light-curing material on the worktable, The laser performs selective curing according to the three-dimensional structure of the preformed product, and then the workbench is lowered one layer relative to the print head, and then a layer of light-cured material is re-laid, and the cycle repeats; in the existing equipment, because the print head needs to be translated, the overall stability Poor, especially in some existing designs, the print head is designed to move in multiple directions at the same time, which leads to very poor stability; at the same time, in ord...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many forming principles used in the very popular 3D printing technology, and different principles will produce a series of different equipment; the working principle of the 3D printer equipment based on stereolithography is to lay the light-curing material on the worktable, The laser performs selective curing according to the three-dimensional structure of the preformed product, and then the workbench is lowered one layer relative to the print head, and then a layer of light-cured material is re-laid, and the cycle repeats; in the existing equipment, because the print head needs to be translated, the overall stability Poor, especially in some existing designs, the print head is designed to move in multiple directions at the same time, which leads to very poor stability; at the same time, in order to facilitate observation and manipulation, it is necessary to set the processing platform at a high In the traditional structure, the use of higher support components makes the print head and the processing platform in an unstable state;

[0003] At the same time, our research has found that the adjustment in the two-dimensional direction (X direction and Y direction) through the principle of the screw nut is relatively accurate and easy to implement, but its accuracy is often not very accurate when some high standards are required. The positioning of a certain coordinate position, which leads to the reduction of machining accuracy

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