Extrusion molding-photocuring integrated three-dimensional printer and printing method thereof

Abstract

The invention discloses an extrusion molding-photocuring integrated three-dimensional printer and a printing method thereof. The extrusion molding-photocuring integrated three-dimensional printer comprises a rack, a photocuring molding trough module, a composite molding platform module, a non-interference switching device, a light processing device and an X-axis system driving motor, wherein the photocuring molding trough module is fixedly arranged on an axis movement mechanism; the composite molding platform module is fixedly arranged on a Z-axis movement mechanism; the non-interference switching device controls reverse movement of an extrusion molding platform and a photocuring molding platform by utilizing a gear engagement principle; the light processing device is positioned at the bottom end of the trough module, is fixedly arranged on the axis movement mechanism and is used for projecting a photocuring molded graph onto a composite deposition platform; and the X-axis system driving motor is fixed on an X-axis movement mechanism and drives an X-axis system motor lead screw to drive the composite deposition platform to turn over. According to the extrusion molding-photocuring integrated three-dimensional printer disclosed by the invention, a personalized customized high-precision three-dimensional structure is printed by a photocuring technology, and then a biological material is printed by an extrusion molding technology, so that high-precision personalized rapid printing of various materials is realized.

Description

technical field [0001] The invention relates to the field of 3D printing of biological materials, in particular to a composite three-dimensional printer and a printing method thereof which combine nozzle extrusion molding technology and digital light processing technology. Background technique [0002] Bio-3D printing is based on the principle of discrete-stacking forming. According to bionic morphology, biological structure or biological function, bio-materials or biological units are used to manufacture personalized in vitro three-dimensional structure models or in vitro three-dimensional organisms. This technology is an emerging discipline born from the intersection of engineering manufacturing, material science and life science. [0003] Digital Light Processing (Digital Light Processing, referred to as DLP) three-dimensional molding technology is an important class of light-curing additive manufacturing technology, which is based on the Digital Micromirror Device (DMD)...

AI Technical Summary

Problems solved by technology

Extrusion deposition bioprinting is suitable for a wide range of biological materials, the nozzle temperature is easy to control, and the printing speed is faster compared with DLP printing technology, but its printing formability is poor, the molding structure is easy to collapse, and the printing structure is single, which is not conducive to the personalized customization of the model

[0005] Based on the above contradictions, combined with the current strong demand in the orthopedic medical field, it is urgent to develop a 3D printing equipment that combines DLP technology and extrusion molding technology to solve the problems of single printing materials and slow printing speed of photocuring equipment. Problems such as difficulty in forming fine structure of molding equipment, difficulty in personalized customization, and low printing accuracy

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