A 3D printer and method for corner-laying carbon fiber/resin composite products

Abstract

The invention relates to a 3D printer and method for an angle-laid carbon fiber / resin composite product. The printer comprises a processing platform, a threading plate structure and a fiber resin multifunctional spray head. During printing, the diameter of the single-layer threading plate can be autonomously selected according to the size of a workpiece, the number of layers of the threading platestructure can be determined according to the size of the machined workpiece, carbon fibers can be effectively saved by selecting the proper number of layers of the threading plate structure, and meanwhile threading efficiency is improved. The threading plate structure comprises detachable wire cutting scissors which are installed on the lower half portion of a threading plate on the uppermost layer in the working process and used for cutting off the carbon fibers after threading of each layer is finished. The fiber resin multifunctional spray head comprises a fiber placement spray head, a thermoplastic material spray head, a spray head converter and a heating spray head. According to the method, the carbon fibers can be laid at any angle, the strength of the carbon fibers can be enhanced,materials are saved, and the processing efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced 3D printing, and in particular relates to a 3D printer and method for corner-laid carbon fiber / resin composite material products. 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, shipbuilding, It is an important structural material in the field of robotics, and 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 walks of life. ...

AI Technical Summary

Problems solved by technology

For example, the patent CN201811374788.7 proposes a wire laying and spinning equipment based on the principle of a 3D printer. It has a new idea for infiltrating and curing continuous fibers, but the printing method of this equipment has not been improved, and can only provide the most basic 3D Printing concept, can not efficiently meet some special needs

CN201711050843.2 proposes a printer that utilizes rotation and high-speed filament laying, but this invention cannot meet the requirements for fiber filament strength well while meeting high-speed and high-efficiency, resulting in that the strength of the material cannot be well Guarantee, it can only be used as a prototype of equipment to improve efficiency

CN201810422931.9 provides a printing nozzle for printing fiber-reinforced composite materials, but the nozzle cannot measure whether the filament is straightened, and cannot guarantee the correctness of the filament output by the printer, as well as the degree of completion of the printed product, and the function needs to be improved

CN 201711345896.7 The size of the equipped platform cannot be freely changed during printing, which will lead to waste of materials

CN201711050843.2 Although a disc rotating platform is designed, the nozzle of the device cannot rotate, and the movement of the rotating platform only makes up for the lack of movement of the nozzle, but it cannot achieve the tension of the fiber filaments, and the printing function still needs to be improved

CN201810422931.9 adopts additive manufacturing, but the residual wire cannot be effectively removed when processing the residual wire, and the finished product is not high in completion

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