Multi-degree-of-freedom 3D printer of fiber reinforced composite material and printing method thereof

Abstract

The invention discloses a multi-degree-of-freedom 3D printer of a fiber reinforced composite material and a printing method thereof. The 3D printing can be performed with any angle and any movement locus by making use of the flexibility of a manipulator; and a 3D printing head mounted on the multi-degree-of-freedom 3D printer can perform the 3D printing of a high-strength short fiber reinforced composite material, and can perform the splicing and the weaving of continuous resin-based long fiber to produce a structural body of a continuous fiber reinforced resin-based composite material. The multi-degree-of-freedom 3D printer can precisely control the orientation of reinforced fiber in a composite material part in the 3D printing process, and can realize the quick production of the composite material part with specific mechanical, electric and thermal performances and a complex structure. Meanwhile, a mold customized beforehand and a pretreated fiber prepreg tape are not needed in the process; and the multi-degree-of-freedom 3D printer is not only suitable for the production of large parts, but also suitable for the large-batch production of small parts, so that the production cost and the production period are largely reduced, and the wide application of the composite material parts is further promoted.

Description

technical field [0001] The invention relates to the technical field of fiber-reinforced 3D printing, in particular to a fiber-reinforced composite multi-degree-of-freedom 3D printer and a printing method thereof. Background technique [0002] Due to its high specific strength, high specific modulus, ablation resistance and erosion resistance and other advantages, fiber-reinforced composite materials have been widely recognized in contemporary manufacturing industries, and have become a modern industry, especially in aerospace, national defense, automobile racing, An important structural material in robotics and medical fields, its development is very rapid. In recent years, various composite material manufacturing technologies have emerged as the times require. Among them, the application of fiber placement technology in the manufacture of high-performance composite material parts such as aviation and aerospace has attracted widespread attention from all walks of life. Comp...

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Problems solved by technology

[0003] However, although the composite fiber placement technology eliminates the fiber weaving problem in the traditional composite manufacturing process and can realize the placement of complex curved surface structures, the process must have a pre-customized mold, and the manufacture of large molds is expensive. At the same time, the fiber laying equipment is extremely complicated, and generally requires expensive electron beams or lasers as heat sources for curing, which results in very high manufacturing costs for the equipment itself, further raising the price of composite parts prepared by the fiber laying process , and the fiber placement process is only suitable for regular surface composite structure laying and forming, it is difficult to realize the manufacture of composite parts with three-dimensional complex structures, which greatly hinders the application of fiber reinforced composite materials in a wider range of fields

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