A Material-saving Printing Machine Utilizing Surplus Material Scraping

Abstract

The invention discloses a material-saving printing machine utilizing excess materials for scraping. The material-saving printing machine utilizing excess materials for scraping structurally comprisesan ink fountain, a printing plate cylinder, a self-cleaning ink roll, an impression cylinder and a paper roll. The material-saving printing machine utilizing excess materials for scraping has the following beneficial effects: by virtue of the mutual cooperation of a self-cleaning mechanism and an ink scraping mechanism, redundant ink on the surface of the printing plate cylinder is scraped througha scraping knife, so that redundant printing for a printed pattern due to existence of ink at parts out of a concave plate surface structure, of the printing plate cylinder, is avoided; meanwhile, the redundant ink adhered onto the scraping knife is concentratedly adsorbed by virtue of a suction structure, so that rationalized use for the ink is realized, and waste is avoided; the structures of an inclined frame of the suction structure, and the scraping knife are both v-shaped, so that when the scraping knife is superposed with the inclined frame, the redundant ink on the surface of the scraping knife is concentratedly adsorbed under the action of a negative pressure suction machine, and flows into the ink fountain via a flow distribution pipe and from the two sides, so that influence onprinting due to mixing for the redundant ink and pigments stained on the surface of the scraping knife when the pigments are replaced and used is avoided.

Description

technical field [0001] The invention relates to the field of printing machines, more precisely, it relates to a material-saving printing machine which utilizes residual materials to scrape off. Background technique [0002] Printing machine is one of the essential equipment for office. It is generally composed of plate loading, ink application, embossing, paper feeding and other mechanisms. There are many kinds of printing machines. If it is classified according to the form of printing plate: letterpress printing machine, lithographic printing machine, gravure printing machine, screen printing machine, among them, when using the gravure printing machine to print, due to the uneven scraping of the coating on the printing plate cylinder, the printing paper appears ghosting, too much ink is blurred, etc. phenomenon, which leads to paper waste and frequent reprinting. In the gravure printing machine where this phenomenon occurs, the pigment is used most frequently and the demand...

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a material-saving printing machine that utilizes the remaining material to scrape off, so as to solve the problem in the prior art that the paint on the printing plate cylinder is damaged when the gravure printing machine is used for printing. Uneven scraping leads to ghosting on printing paper, too much ink and blurred version, etc., which leads to waste of paper and frequent reprinting. In gravure printing machines with such phenomena, it leads to the use of pigments. The quantity is the most frequent and the demand is the largest, and after replacing the paint box, the color of the printed cardboard has the defect of two-color intermingling

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