Film covering structure of label printing machine

Abstract

The invention relates to the technical field of printing equipment, and discloses a film covering structure of a label printing machine. The structure comprises a machine body, a roller and a scraper,wherein the roller is arranged between the inner walls of the machine body, the scraper is arranged between the inner walls of the machine body and is in contact with the outer wall of the roller, the two ends of the scraper are provided with supporting blocks, and the outer walls of the supporting blocks are slidably connected with sliding sleeves. By means of cooperation of magnetic force between a first magnetic block and a second magnetic block, a traditional fixedly mounted scraper is installed movably, so that hard friction between the roller and the scraper is changed into movable friction, the friction force between the scraper and the roller is adaptively controlled, and then the scraper can be automatically contracted laterally after being impacted. Meanwhile, after the scraperand the roller are not in contact with each other, the magnetic force of the two magnetic blocks is instantly released, the scraper is ejected back to the initial position, and the friction force between the scraper and the roller is reduced, so that when the scraper is used, the abrasion degree is reduced, the service life of the roller in use is prolonged, and the definition of a label during printing is increased.

Description

technical field [0001] The invention relates to the technical field of printing equipment, in particular to a film covering structure of a label printing machine. Background technique [0002] Modern printing machines are generally composed of plate loading, ink application, embossing, paper feeding (including folding) and other mechanisms. The machine applies ink to the place where there are text and images on the printing plate, and then transfers it directly or indirectly to paper or other substrates (such as textiles, metal plates, plastics, leather, wood, glass and ceramics) to reproduce Produce the same print as the printing plate. [0003] The working principle of the existing printing press is as follows Figure 4 As shown, the ink is poured into the ink tank, and then the rollers are rotated to transfer the ink to each roller to form a film structure, and then the printed product is placed between the two rollers, and the excess is scraped off by a scraper as the r...

AI Technical Summary

Problems solved by technology

[0003] The working principle of the existing printing press is as follows Figure 4 As shown, the ink is poured into the ink tank, and then the rollers are rotated to transfer the ink to each roller to form a film structure, and then the printed product is placed between the two rollers, and the excess is scraped off by a scraper as the rollers rotate. Ink, the printing pattern can be printed on the paper by starting the equipment. During the use of the lamination structure of the existing printing machine, the scraper is mostly fixed directly on the equipment and contacts the roller to scrape off the excess ink on the roller. As the label is printed, the roller rotates faster and faster. At this time, hard friction begins to appear between the roller and the scraper (the scraper does not move, the roller rotates), and the roller wears the position where the scraper contacts. On the roller, the surface of the roller is no longer smooth, and the label pattern on the surface of the printed product is blurred, which affects the quality of printing, and the scraper is tilted upward after being hit, and there is no contact between the scraper and the roller. When the roller rotates, there is ink, and the excess ink cannot Scrape off all the printing on the paper, resulting in a wide range of ink on the label pattern on the paper, the label cannot be formed, and it needs to be manually corrected to return to the original position before the printing machine can work normally, which further affects the front side of the printing machine.

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