Controllable three-dimensional printing nozzle for continuous fiber composite

Abstract

The invention discloses a controllable three-dimensional printing nozzle for a continuous fiber composite. The controllable three-dimensional printing nozzle comprises a nozzle module connected with athermoplastic conduit, a fiber filament guiding module and a shearing module. The nozzle module comprises a first spraying chamber and a second spraying chamber, wherein one end of the first sprayingchamber is communicated with the thermoplastic conduit; the second spraying chamber is communicated with the other end of the first spraying chamber in a sleeving manner; a first elastic component isarranged between the first spraying chamber and the second spraying chamber for connection and spacing of the chambers; and the end, far away from the first spraying chamber, is provided with a firstjet tip. The fiber filament guiding module comprises a fiber conduit, wherein the filament outlet of the fiber conduit extends into the first spraying chamber and further extends to a position in orclose to the second spraying chamber. The second spraying chamber is pushed and ascends to allow the filament outlet to be close to or extend out of the first jet tip. The controllable three-dimensional printing nozzle provided by the invention can realize selectable and controllable printing of continuous fibers and thermoplastic materials, termination of printing is not needed during breaking offilaments, and the nozzle can conveniently print continuous fiber composites with complex structures.

Description

technical field [0001] The invention relates to the field of three-dimensional printing of continuous fiber composite materials, in particular to a controllable three-dimensional printing nozzle of continuous fiber composite materials. Background technique [0002] Continuous fiber composite materials have excellent characteristics such as high strength, high stiffness, low specific gravity, high impact toughness, good fatigue resistance, high temperature aging resistance, chemical corrosion resistance, creep resistance, abrasion resistance, and recyclable use. It has important application prospects in the fields of automobile, aerospace, rail transit and so on. However, the traditional continuous fiber composite processing technology still faces three difficult problems: high cost, strict skill requirements and matching professional equipment. [0003] The emerging three-dimensional printing technology in recent years is expected to solve the above problems. This technolog...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a controllable continuous fiber composite material three-dimensional printing nozzle, which solves the problem of automatic cutting of continuous fibers in the three-dimensional printing process, can realize continuous and uninterrupted printing, has the characteristics of compact structure, simple and convenient control, and easy replacement.

Images