3D printing device and method for integrated manufacturing of continuous functionally graded materials and structures

Abstract

The invention discloses a 3D printing device and method for integrally manufacturing continuous functional gradient materials and structures. The passive hybrid printing module of the material; the constrained sacrificial layer feeding module is connected to the constrained sacrificial layer feeding module and the positive pressure air circuit, and the passive hybrid printing module is connected to the passive hybrid feeding module and the positive pressure air circuit; the passive hybrid printing module includes a passive hybrid printing nozzle, which can drive The cylinder module I for the movement of the passive hybrid printing nozzle; the constraining sacrificial layer printing module includes the constraining sacrificial layer printing nozzle and the cylinder module II capable of driving the constraining sacrificial layer printing nozzle to move; the passive hybrid printing nozzle and the constraining sacrificial layer printing nozzle are connected to high-voltage direct current The power supply, and the printing platform is set under the passive hybrid printing nozzle. The invention can realize the integrated low-cost and high-efficiency manufacture of continuous functionally graded materials and complex three-dimensional structures.

Description

technical field [0001] The present invention relates to the technical field of additive manufacturing and functionally graded material / structure manufacturing, in particular to a 3D printing device and method for the integrated manufacture of continuous functionally graded materials and complex three-dimensional structures. Background technique [0002] Functionally graded material (Functionally Gradient Material, referred to as FGM) refers to the use of advanced composite technology in the preparation process of the material, so that the microscopic elements (including material components and microstructure) of the material are continuous in a specific direction (or It is a heterogeneous composite material in which the macroscopic properties of the material also change continuously (or quasi-continuous) gradients in the same direction. The distinctive feature of functionally graded materials is to add an intermediate transition layer with a gradient of material content in t...

AI Technical Summary

Problems solved by technology

[0009] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a 3D printing device and method for the integrated manufacture of continuous functionally graded materials and structures, which is especially suitable for the integrated manufacture of polymer-based continuous functionally graded materials and complex three-dimensional structures, solving the problem of The composition / components of the material are constantly changing during the continuous functional gradient material printing process, which leads to problems that cannot be solved by traditional 3D printing methods (consistency, interlayer bonding performance, precise shape control and rapid curing, etc.), and expands the range of materials suitable for printing. type; has a larger gradient range, better bonding strength between layers and continuous gradient performance; improves the consistency of printed functional gradient parts; improves the flexibility of printing functional gradient changes; improves printing efficiency; simplifies The structure of continuous functional gradient parts 3D printer reduces the manufacturing cost

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