Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press

Abstract

The invention provides an ink fountain roller, an ink distributing unit and an ink distributing system of a carving photogravure press. The ink duct roller is a cavity-die inking roller with quasi-grains at the surface, and the quasi-grains correspond to forme grains; the ink distributing unit comprises an ink fountain, the ink fountain roller, a hook type scraper and an elastic color model roller, wherein the ink fountain roller contacts with ink in the ink fountain, the scraper is arranged at one side of the ink fountain roller, the elastic color model roller is arranged at the other side of the ink fountain roller and is in rolling transmission with the ink fountain roller; and the ink distributing system also comprises a gravure roller and an impression roller. The ink fountain rollerof the ink distributing unit transmits ink grains which correspond to the gravure grains and have different thicknesses to the color model roller to form basso-relievo-shaped quasi-grain ink; the basso-relievo-shaped quasi-grain ink is transmitted into the gravure grains on the gravure roller; and the gravure roller and the impression roller mutually press to carry out printing. The invention hasshort ink path, easily ensures the accuracy of ink distribution and easily maintains the printing adaptability without ineffective circulation for the ink.

Description

technical field [0001] The invention relates to an engraving gravure printing machine, in particular to an ink fountain roller for quantitatively outputting ink on demand, an ink transfer unit and an ink transfer system provided with the ink fountain roller. Background technique [0002] figure 1 It is a schematic diagram of an ink transfer system of a known multi-color engraving gravure printing machine, in which only one color group ink transfer route is shown in the figure, and the entire ink transfer system is composed of multiple color groups. Its working principle is as follows: the ink fountain roller 82 and the color mold roller 83 rotate at the same speed, and at the same time, the ink in the ink fountain 80 is rolled onto the color mold roller 83 after setting the amount of ink delivered by the metering plate 89. The color mold roller 83 has convex The block-shaped inking area that rises corresponds to the version area of ​​the ink color on the gravure cylinder 85...

AI Technical Summary

Problems solved by technology

[0007] KBA-GIORI's scheme has a long ink path, and the accuracy of transmission is not easy to guarantee, and it is impossible for the dry rubbing roller 97 to remove the non-dented part of the die 92 The ink is wiped clean, and the scraper 99 cannot remove the ink on the dry wipe roller 97 (please combine Figure 3), the excess ink is passed to the gravure plate 95, the ink saving effect is not good, and the ink cycle rubs and scrapes, invalid circulation, solvent volatilization, stable temperature control It is not easy to guarantee the printability of the ink, and the printability of the ink is easily damaged

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