A 3D curved surface electrojet printing patterning device and method

Abstract

The invention belongs to the relevant technical field of curved surface object surface patterning, and discloses 3D (3-Dimensional) curved surface electric spray printing patterning equipment. The equipment comprises a work table, a feeding and discharging module, an electric spray printing module, a vision module and a curing module, wherein the work table is in a multi-station turntable form, and executes the switching of all stations through self rotation; the electric spray printing module comprises a plurality of sets of spray printing heads which are sequentially installed one by one in a way of corresponding to a plurality of electric spray printing and procuring stations, and can execute the free posture regulation and the electric spray printing operation of a curved surface; the vision module comprises a positioning camera, a measuring camera, a detecting camera, a base plate observing camera and a jet flow observing camera, and executes high-precision on-line detection on the process link in each station. The invention also discloses a corresponding process method. On the basis of an electrofluid spray printing technology, the characteristics of high flexibility and high-resolution spray printing are realized; the curved surface spray printing can be realized at high quality; the equipment is applicable to patterning of various pattern curved surfaces, typically such as 3D mobile phone cover panel patterning processes.

Description

technical field [0001] The invention belongs to the related technical field of surface patterning of curved objects, and more specifically relates to a 3D curved surface electrojet printing patterning device and method. Background technique [0002] Typical 3D surfaces include components such as 3D mobile phone covers. Since the development of smartphones, appearance design has become the focus of competition, and curved screens are popular for their unique visual effects and operating experience. The 3D curved surface cover is thin, transparent and clean, anti-fingerprint, anti-glare, hard, scratch-resistant, and weather-resistant. The curved edge touch function brings excellent touch feel, which can solve the problem of insufficient antenna layout space and enhance Features such as the receiving function, thus producing obvious advantages. For curved surface printing such as 3D mobile phone cover, it refers to the production of opaque colored areas, logos, button icons a...

AI Technical Summary

Problems solved by technology

[0003] The curved surface printing process in the prior art usually includes the following categories: screen printing technology, which uses a scraper to apply pressure on the graphic part of the printing plate to squeeze the ink from the mesh to the substrate. The ink layer is thick, but the curved surface It is difficult to ensure that the shape of the substrate, screen frame and squeegee are consistent during printing, and ink accumulation is serious at places where the curvature changes sharply; OCA composite printing technology is to composite printed graphics and texts on the target surface through OCA optical glue, and the process is relatively complicated; Coloring technology is to replace other ions in the superficial layer of glass with non-ferrous metal ions to present color, the color is lighter, and the process cost is high; in addition, there are other technologies such as photolithography ink printing technology, laser engraving ink technology, etc.

[0004] However, further research shows that: firstly, none of the above-mentioned patterning technologies can well solve the problem of seamless connection in the whole manufacturing process of 3D curved objects, the efficiency is low when used, the operation is cumbersome, and there are various limitations; secondly , in the actual manufacturing process, it is necessary to obtain high-response, high-precision real-time control of the height information of the curved surface, and then achieve high-resolution curved surface patterning. However, the existing measurement schemes are often only suitable for the measurement of planar objects. It can measure the distance information from the measured object to the camera, but cannot obtain the accurate deformation information of the measured object in the direction away from the surface

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