In-situ weaving additive manufacturing method of continuous fiber reinforced composite material

Abstract

The invention relates to an in-situ weaving additive manufacturing method of a continuous fiber reinforced composite material. The in-situ weaving additive manufacturing method of the continuous fiberreinforced composite material comprises the steps of firstly layering and scattering data of a three-dimensional component, and obtaining manufacturing data required for printing and weaving; then pre-grouping and pre-setting fiber yarns to be woven; utilizing a continuous fiber reinforced composite material printing technology for accomplishing printing, and forming a printing layer; when a nozzle is moving, quickly weaving on an uncured path at the rear end of the nozzle through a thread guider at the same time, dipping and curing the fiber yarns through a resin in a mixture at the time, and forming a weaving layer on the printing layer; repetitively printing and weaving until achieving the thickness of a target sample layer, and accomplishing an integrated manufacturing process for printing and weaving a target sample. According to the in-situ weaving additive manufacturing method of the continuous fiber reinforced composite material provided by the invention, integration and unification of high-performance continuous fiber reinforced composite material component printing forming and fiber weaving processes are realized, all-directional performances of the component is realized, and particularly, the controllability of an interlayer bonding performance in a z direction is realized.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing technology, and in particular relates to an in-situ weaving additive manufacturing method of continuous fiber reinforced composite materials. Background technique [0002] Continuous fiber-reinforced composite materials are an important support for aerospace, national defense and military industries, and their usage has become an important indicator to measure the advanced level of related fields, and their manufacturing technology is the key. At present, according to the structure, the manufacturing technology of continuous fiber reinforced composite materials includes lamination / winding process and weaving process. Among them, the lamination / winding process is relatively simple and has a wide range of applications, but there are problems such as low bonding strength between material layers and anisotropy of properties. The weaving process uses the weaving method to make a three-dimensional...

AI Technical Summary

Problems solved by technology

Among them, the lamination / winding process is relatively simple and has a wide range of applications, but there are problems such as low bonding strength between material layers and anisotropy of properties.

The weaving process uses the weaving method to make a three-dimensionally distributed fiber prefabricated body, and then uses hot pressing and other methods to impregnate the resin to obtain a composite material, which can manufacture components with balanced material properties, but the fiber weaving process is complicated, and it is difficult to realize the manufacture of complex structures

[0003] In recent years, researchers have invented additive manufacturing methods for continuous fiber composites (Xiaoyong Tian et al. Chinese patent ZL2014103256503, 2014; Zhongde Shan et al. Chinese patent CN106515041A, 2017; Patent CN107127972A, 2017), which solves the problems of traditional continuous fiber composite materials such as the need for molds, complex processes, and difficult realization of complex structures

However, the existing additive manufacturing methods of composite materials are all based on the lamination / winding process, and there are still problems such as bonding strength between material layers and performance anisotropy.

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