Method and system for making a colored 3D object

Abstract

The invention provides a manufacturing method of colorful 3D objects. The manufacturing method comprises the following steps: (a) based on layer structure data of a target object, a forming material is used for printing to form a layer structure result; (b) after the step (a) or at the same time, colorful ink is used for printing on the surface of the layer structure result based on layer color data to form a layer printing result; and (c) the step (a) and the step (b) are repeated to form multiple layer printing results; and the multiple layer printing results are laminated to form a colorful 3D object; when the step (b) is executed after the step (a), the printing directions in two adjacent times of repeating the step (a) are the same; or the step (b) and the step (a) are executed at the same time, the printing directions in two adjacent times of repeating the step (a) are opposite. The invention further provides a manufacturing system for executing the manufacturing method; and the manufacturing system comprises a processing terminal, a driving controller and a printing head. The manufacturing method and the manufacturing system improve the size precision of the colorful 3D object and the printing efficiency.

Description

technical field [0001] The invention belongs to the field of rapid prototyping of 3D objects, and in particular relates to the technology of layer-by-layer superposition manufacturing of 3D objects by using an inkjet printing head, in particular to a method and system for manufacturing a colored 3D object. Background technique [0002] Rapid prototyping technology, also known as rapid prototyping technology or additive manufacturing technology, is based on the basic principles of 3D model slices, which are processed and piled up layer by layer to make 3D objects. [0003] At present, the use of rapid prototyping technology to produce 3D objects specifically includes fused deposition technology (abbreviation: FDM technology), stereolithography technology (abbreviation: SLA technology), selective laser sintering technology (abbreviation: SLS technology), laminated molding technology (abbreviation : LOM technology) or three-dimensional inkjet printing technology (abbreviation: ...

AI Technical Summary

Problems solved by technology

However, when using this method to make colored 3D objects, it is necessary to ensure that the physical properties of different materials are basically the same, such as: viscosity, shrinkage, surface tension, etc., especially strict requirements on shrinkage. Inconsistency, after photocuring, the volume of the ink droplet is different. At this time, the surface of the 3D object is uneven, which ultimately affects the dimensional accuracy of the 3D object.

Moreover, using this method to make colorful 3D objects, the production cost of molding materials is relatively high

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