A multi-degree-of-freedom 3D printer for fiber-reinforced composite materials and its printing method

Abstract

A fiber-reinforced composite multi-degree-of-freedom 3D printer and its printing method utilizes the flexibility of the manipulator to perform 3D printing at any angle and any motion trajectory. The 3D printing head installed on it can perform high-strength short-term The 3D printing of fiber-reinforced composite materials can also carry out splicing and weaving of continuous resin-based long fibers, thereby producing a continuous fiber-reinforced resin-based composite material structure. The orientation of the fibers in the middle can realize the rapid manufacture of composite parts with complex structures with specific mechanical, electrical and thermal properties; at the same time, there is no need for pre-customized molds and pre-treated fiber prepreg tapes in this process, not only for large parts It is also suitable for the mass production of small parts, which greatly reduces the manufacturing cost and production cycle, and further promotes the wide application of composite parts.

Description

Technical field [0001] The invention relates to the technical field of fiber-reinforced 3D printing, in particular to a fiber-reinforced composite material multi-degree-of-freedom 3D printer and a printing method thereof. Background technique [0002] Fiber-reinforced composite materials have been widely recognized in contemporary manufacturing due to their high specific strength, high specific modulus, ablation resistance and erosion resistance, and have become modern industries, especially in aerospace, national defense, military, 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. Among them, the application of fiber placement technology in the manufacture of high-performance composite material parts such as aviation and aerospace has received widespread attention from all walks of life. Composite fiber placement and molding techn...

AI Technical Summary

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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