Continuous long-fiber reinforced-type composite material 3D printer and printing method thereof

Abstract

The invention provides a continuous long-fiber reinforced-type composite material 3D printer and a printing method thereof. The 3D printer and the printing method are characterized in that the combination of the 3D printing technology and the composite material fiber placement technology achieves the 3D printing of a resin-based continuous long-fiber reinforced-type composite material, and the process does not need a die that is customized in advance and a pre-treated fiber pre-soaking belt, so that the cost is greatly decreased; meanwhile, the 3D printing method enables well and convenient control of the directions of the reinforced fibers in a manufactured part, and moreover, a composite material part with the customized mechanical property can be obtained easily, and the composite material part with a complex structure can be quickly manufactured; and compared with the original composite material fiber placement process, the printing method has the advantages that the application scope is wide, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of 3D printing of fiber-reinforced composite materials, in particular to a 3D printer for continuous long fiber-reinforced composite materials and a printing method thereof. Background technique [0002] Resin-based fiber-reinforced composite materials, including continuous long-fiber and short-fiber-reinforced composite materials, the manufactured parts have high specific strength, large specific modulus, material properties can be designed, corrosion resistance and durability are good, and the thermal expansion coefficient and The similarity of concrete and other advantages make resin-based fiber-reinforced composite materials meet the needs of modern structures that are large-span, towering, heavy-loaded, light-weight and high-strength, and work under harsh conditions. Fields such as robotics and medical care are increasingly used. 3D printing technology refers to the fact that the print head performs ma...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the relatively advanced manufacturing methods of resin-based long fiber reinforced composite material parts mostly adopt composite fiber laying technology, that is, according to the laying direction and laying thickness requirements determined by the part structure, multi-degree-of-freedom laying is adopted. The head automatically lays multiple groups of fiber prepreg bundles or narrow strips on the surface of the mold. This method requires pre-processed fiber prepregs and extremely expensive molds, and is not suitable for mass production of long fiber reinforced parts with complex structures.

At the same time, there are few 3D printers and related research work that can realize the manufacture of fiber-reinforced composite materials at home and abroad, and no mature continuous long-fiber-reinforced composite material 3D printer has been found, so this greatly limits the use of 3D printing technology in fiber-reinforced composite materials. Developments in the field of parts manufacturing

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