Production line of graph code steel plate integrating spray coating and screen printing

Abstract

The invention provides a production line of a graph code steel plate integrating spray coating and screen printing. The production line comprises a screen printing section which is provided with a screen printing component. The screen printing component comprises a printing table which is used for containing a steel belt, wherein the steel belt is processed by cold rolling and / or hot rolling and shear forming. A leveling device is arranged on the bottom portion of the printing table and used for leveling the surface of the steel belt before the surface of the steel belt is printed by the screen printing section. Due to the facts that the leveling device is arranged on the bottom portion of the printing table, the leveling device can level the steel belt which is processed by cold rolling and / or hot rolling and shear forming, a scrapper can conduct printing ink transfer print under the action of uniform force in the screen printing section, printing difficulty is reduced, and therefore the possibility that the screen printing can be applied to production of the graph code steel plate is achieved.

Description

technical field [0001] The invention relates to a production line for color steel plates, which belongs to the field of color steel plate manufacturing. Background technique [0002] Screen printing, together with offset printing, embossing printing, and gravure printing, is called the four major printing methods. Screen printing needs screen printing components to complete. Screen printing equipment components are mainly composed of five major elements: screen printing plate, scraper, ink, printing table and substrate. Among them, the screen printing plate is provided with graphic and text Partial mesh and non-graphic part mesh, the mesh of the graphic part can pass through the ink, and the mesh of the non-graphic part cannot pass through the ink. [0003] The basic process of printing with screen printing equipment components is: when printing, pour ink on one side of the screen printing plate, apply a certain pressure on the ink part on the screen printing plate with a s...

AI Technical Summary

Problems solved by technology

[0005] Although screen printing technology has been widely used in paper printing, at present, there is no successful technology to apply it to steel plates to form patterns or barcodes.

The reason is that in the process of screen printing, it is necessary to give the ink a certain force through the scraper, so that the ink can penetrate through the mesh of the graphic and text, and form the required pattern or barcode on the substrate. When the substrate is paper, After laying flat on the printing table, it is relatively flat, and when the ink is given force by the scraper, the printing of different parts can be realized under uniform force; however, when the steel plate is used as the substrate, since the steel plate is mostly cold-rolled or hot-rolled After the steel plate, in the process of cold rolling or hot rolling, the steel plate will often be deformed, which will cause the steel plate to not be completely flat (that is, the steel plate is in a bent state on the printing table, and the two ends are lifted and the middle is in contact with the printing table, or the middle is flat. The two ends are in contact with the printing table), which makes it difficult for the scraper to print under the uniform force of the ink, which increases the difficulty of printing; more importantly, due to the unevenness of the steel plate, the scraper is in the When in contact with the steel plate line, an active force should be given to the steel plate to make it smooth. However, due to the high hardness of the steel plate, it will be difficult to ensure its smoothness by relying solely on the scraper; in addition, due to the strength of the screen printing plate and the steel plate The difference is large, and how to balance the strength difference between the two during the force application process of the scraper is also a technical difficulty

In summary, the above-mentioned technical difficulties limit the application of screen printing technology in pattern code steel plates

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