A composite material 3D printing porous nozzle and method integrating filament laying, forming and cutting

Abstract

The present invention relates to a multi-material 3D printing porous nozzle and method integrated with laying, forming and cutting. The nozzle includes a fiber resin porous wire feeding nozzle, a carbon fiber cutting mechanism, and a fiber filament laying stop mechanism. The fiber resin porous wire feeding nozzle includes The nozzle base frame, the porous wire feeding nozzle, the porous wire feeding nozzle extends downward through the nozzle base frame to extend the porous wire laying head and the resin heating nozzle; the carbon fiber cutting mechanism can realize the partial cutting and trimming of the fiber filament, and the fiber filament laying The stop mechanism can clamp the filaments before cutting. The invention can realize the simultaneous laying of multiple carbon fiber filaments and the synchronous curing and compaction, improve processing efficiency, and can realize carbon fiber laying and arbitrary cutting at any angle, saving materials and having a high degree of automation.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced 3D printing, and in particular relates to a composite material 3D printing porous nozzle and method integrated with laying, forming and cutting. 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 aerospace and aviation has attracted widespread attention from all ...

AI Technical Summary

Problems solved by technology

For example, the Chinese patent (publication number: CN104441658A, publication date: April 22, 2015) discloses a continuous fiber reinforced smart composite material 3D printing head, which proposes a certain concept based on hot-melt and solidified continuous fibers, but the device's The printing method is similar to traditional 3D printing. It can only provide the most basic composite material 3D printing idea, and cannot efficiently meet some special needs. The function is too single

Chinese patent (publication number: CN109016490A, publication date: December 18, 2018) discloses a continuous fiber-reinforced composite material 3D printer nozzle device with an integrated structure. Good composite fiber filaments, but during the printing process, the matrix / support material printing device and the fiber printing device print alternately, and simultaneous printing cannot be achieved, and the efficiency is relatively low. The properties of the matrix material cannot be guaranteed to be in the best state during the alternating process. Can affect the structural properties of the finished composite

Chinese patent (publication number: CN108437457A, publication date: August 24, 2018) discloses a printing nozzle for printing fiber-reinforced composite materials, but the nozzle cannot realize simultaneous laying of multi-fiber filaments and cannot freely change fibers Filament spacing, making printing inefficient

Although the patent is equipped with an independent silk laying head and a resin nozzle, it cannot be laid at the same time, and the structural strength is not high; although additive manufacturing is used, the excess silk cannot be effectively removed when processing the excess silk, and the finished product is not high.

Chinese patent (publication number: CN107443739A, publication date: December 08, 2017) discloses a 3D printing nozzle that can realize the shearing of continuous fiber reinforced composite materials. Although a cutting device is designed, the device can only realize For the cutting of regular boundaries, the cutting of fiber-reinforced composite materials with irregular boundaries cannot be realized, and the processing requirements of special design parts cannot be met.

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