Composite 3D printing technology based on fused deposition and photocuring technology

Abstract

The invention discloses a composite 3D printing technology based on fused deposition and photocuring technologies, and belongs to the technical field of additive manufacturing. The composite 3D printing technology is realized on the basis of a brand new composite 3D printer, and components needed by the fused deposition technology and a laser generator as a core component of the photocuring technology are integrated in a printer spray head. During working, raw materials are extruded through a fused deposition nozzle and cured onto a working platform. The working platform is arranged in a liquid groove filled with photosensitive resin, and always keeps flush with the liquid level of the resin. After the raw materials extruded by the nozzle finish printing of one layer thickness on the working platform, the working platform moves downwards by a layer thickness under the control a stepping motor, and is soaked in the photosensitive resin. At the movement, a laser generator fixed to a heating block bracket generates laser light, and carries out scanning and curing on the surface of a fused deposition component soaked inside the photosensitive resin. After scanning and curing are finished, the fused deposition nozzle carries out next layer printing on a piled entity. The abovementioned process is repeated continuously till the printing of the whole part is finished. The product printed with the composite 3D printing technology has the characteristics of high surface precision and high mechanical performance. Moreover, the composite 3D printing technology is wide in material selection range, and can facilitate the wide application of the fused deposition product, and promote further development of the fused deposition technology and the photocuring technology.

Description

technical field [0001] This patent relates to a composite 3D printing technology, in particular to a composite 3D printing technology of fusion deposition technology and light curing technology, which belongs to the field of additive manufacturing technology. Background technique [0002] Due to the low price of fused deposition equipment and the environmental protection of materials, fused deposition technology has become one of the most widely used rapid prototyping technologies. Fused deposition technology has been widely used in automobile manufacturing, machining, precision casting, aerospace, medical, handicraft production and children's toys and other industries, and has achieved significant economic benefits. However, the products made by this technology have poor mechanical properties and low surface precision, which limits the further development and application of this technology. As another mature additive manufacturing technology, light curing technology has th...

AI Technical Summary

Problems solved by technology

However, this method does not essentially solve the problems of low product strength and poor surface accuracy caused by the inherent defects of fused deposition technology, and there are few composite 3D printing technologies that can combine fused deposition technology and photocuring technology at home and abroad.

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