Printing shaping method for making three-dimensional object and support

Abstract

The invention discloses a print molding method for 3D object and support that the process includes the following steps: building up computer solid model, taking slicing and delaminating, the printing nozzle spraying UV liquid material and moving according the information set according to the layers, solidifying to form slice sheet; spraying supporting material to fill the blank area, concreting to solid state to be used for the support for the next layer; superposing to form 3D object and support. The support material could be one from distilled water, watercraft liquid, solvent-liquid, and dyestuff type liquid that would form support after concreting. After making the 3D object, heating until melting, the 3D object would be gained. The invention would be fast, reliable, safe and low cost to make a complex 3D object. It is asepsis, either.

Description

technical field [0001] The invention relates to an object molding method for a three-dimensional object and a support, in particular to a method for manufacturing a three-dimensional object and a support by adopting a layer-by-layer printing molding method. Background technique [0002] Rapid prototyping technology is a rapid production tool from computer three-dimensional entities to physical entities. It is suitable for the production of prototypes and small batches of functional parts. The materials of the produced parts can be ceramic materials, metal materials, paper, photosensitive resin and other materials. The commonly used processes of rapid prototyping technology include photocuring process, selective laser sintering, fused filament deposition manufacturing, laminated solid manufacturing and three-dimensional printing. [0003] The above several processes can make complicated three-dimensional structures, but there are the following defects: 1) the precision is low...

AI Technical Summary

Problems solved by technology

[0003] The above several processes can make complex three-dimensional structures, but there are the following defects: 1) the precision is low

2) Molding speed is slow

The laminated solid manufacturing process cuts out the outline of each layer by a laser, and then chops the non-solid area of ​​each layer. Therefore, it takes a long time to process thin-walled parts and the material utilization rate is low.

The 3D printing process using powder as the molding material, although the forming speed is faster than the other four processes, it takes a certain amount of time for auxiliary processes such as powder supply and powder spreading before each layer of processing, and the processed 3D structure generally has several thousand layer, the time of the auxiliary process accumulates more

3) Only monochromatic, or multi-color but opaque three-dimensional structures can be produced

In addition to the 3D printing process, the other four molding processes can only produce monochrome 3D structures, and cannot produce colored 3D objects. In this way, the product lacks color expressiveness in terms of product concept design and appearance design; The current 3D printing process mostly uses opaque granular materials such as gypsum powder, starch, ceramic powder, etc. Although the 3D objects produced are colorful, they cannot produce colored and transparent 3D objects, and the 3D objects produced by the current 3D printing process The accuracy of the objects is relatively low, and a large number of post-processing steps are required to obtain high-quality surface quality

4) The post-processing procedure of the produced prototype is complicated and the production cost is high

The light curing process and the fuse deposition manufacturing process need to add supports when making most of the three-dimensional objects. The addition of supports is difficult to remove, and the support materials also take up a considerable amount of cost, resulting in waste of materials; the laminated solid manufacturing process Cut paper or ceramic-based thin-layer materials with laser high temperature, the surface quality is poor, and all non-solid parts are chopped up, resulting in more waste of materials; the prototype made by 3D printing process and selective laser sintering process using powder as raw material After the production is completed, when the parts are taken out from the molding room, a relatively complicated post-processing process is required to obtain a high-quality surface

Images