Curtain coating nozzle for 3D printing equipment, and corresponding printing method

Abstract

The invention provides a curtain coating nozzle for 3D printing equipment, and a corresponding printing method. The curtain coating nozzle comprises a curtain coating cavity, curtain coating cutters and a tensioning component; the curtain coating cavity is of a cavity structure, and the side face of the curtain coating cavity is provided with a feeding port for introducing printing raw materials;a slit is formed in the bottom of the curtain coating cavity, and a connecting plate used for connecting the curtain coating cavity is fixedly arranged at the position, around the slit, of the bottomof the curtain coating cavity; the two curtain coating cutters are provided, one curtain coating cutter is a short curtain coating cutter, and the other curtain coating cutter is a long curtain coating cutters; the two curtain coating cutters are fixed below the connecting plate, and arranged on the both sides of the slit separately; and the tensioning component comprises a plurality of tensioningblocks, and all the tensioning blocks are arranged on the outer side of one of the curtain coating cutters. When the curtain coating nozzle provided by the invention is used for 3D printing, the printing raw materials are coated on a screen plate in a showering mode, and can be flattened directly; the flattening operation of a scraper is not required; printing can be performed after curtain coating, and the 3D printing efficiency is improved effectively; and the curtain coating nozzle has broad market application prospects.

Description

technical field [0001] The invention relates to a spray nozzle for 3D printing equipment and a corresponding printing method. Background technique [0002] 3D printing is a rapid printing and prototyping technology. At present, 3D printing technology has been popularized in industrial production and manufacturing; it highly integrates product digital design, manufacturing, and analysis. The more complex the structure, the higher the added value of raw materials, the faster The advantages of efficient forming are more obvious. [0003] When printing with 3D printing equipment, it is necessary to first slice the 3D model of the printed object by software to form several digital slices, and then through 3D printing, the raw materials will be printed layer by layer according to the information of these slices, and solidified; After slicing, the printed object is formed, and the printing is completed; the thickness of the printed raw material corresponds to the thickness of each...

AI Technical Summary

Problems solved by technology

[0006] In the above solution, the printing process has been improved, but the step of using a scraper to level the printing raw material is still not completely avoided. In the process of using a scraper to level the printing material layer, the screen needs to be adjusted after each layer is printed. The next layer can only be printed after scraping, and the intermediate process takes a long time, which is not conducive to the adhesion between each layer of printed matter, affects the mechanical properties of the printed matter, and at the same time, the improvement of printing efficiency is also greatly affected. limitations

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