Ink splash and printing watermark preventing device of gravure printing machine

Abstract

The invention discloses an ink splash and printing watermark preventing device of a gravure printing machine. A protection plate is arranged on one side of a scraper, the upper end of a strip-shaped protection plate is connected with a scraper fixing device, and an arc-shaped protection plate is arranged between a layer of ink box and a printing roller; a protection hood comprises an inner hood body and an outer hood body, the inner hood body is provided with an end surface scraping plate and an outer circle scraping plate, the inner hood body is fixed through a support, and the outer hood body is movably connected with the inner hood body. An ink baffle is added to reduce produced floating ink drops; the depth of an end surface notch of the layer of ink box is reduced and the height of the end surface is increased to change the flowing direction of ink, so that floating ink drops are drained out from the layer of ink box as quickly as possible. By continuously and innovatively improving an ink splash preventing system and an ink supply system, the problem of ink splash is fundamentally solved, the printing speed is improved from original 120m/min to 200m/min, and the operation and control are convenient and quick to realize. The problem of watermarks and ink drops on products is effectively controlled and the solution has very great popularization and reference significance in the printing industry.

Description

technical field [0001] The invention relates to a printing device, in particular to an anti-pollution device used in a gravure printing machine to prevent ink splashing and a device for solving printing watermark failures. Background technique [0002] The printing process of the gravure printing machine is a process in which ink is transferred to the paper by the rotation of the printing roller. During the printing process, about 30% of the bottom part of the printing roller engraved with pictures and texts on the surface is immersed in the ink in a layer of oil box. During the rotation of the printing roller, the scraper cleans up the excess ink floating on the surface of the printing roller in time. The elastic surface of the rubber roller rolls the printed material such as paper on the surface of the printing roller, and the ink of the graphic part is clearly transferred to the printed material. [0003] Due to the high-speed rotation of the printing roller during print...

AI Technical Summary

Problems solved by technology

[0003] Due to the high-speed rotation of the printing roller during printing, ink splashing on the surface and end of the printing roller is particularly obvious; ink splashes can easily form ink dots on the printed matter and affect the printing quality, and even cause waste products; at the same time, the splashed ink can also cause machine equipment and Dirty working environment requires regular and thorough cleaning, thus affecting normal production order

[0004] Ink splashing and printing watermarks are headaches for all gravure printing machine users and equipment manufacturers. Imported gravure printing machines are no exception, which seriously restricts the improvement of equipment efficiency and affects product quality.

The above problems make the printing speed only reach 120 m / min, which seriously restricts the efficiency of the equipment.

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