The gravure printing machine is one of the printing processes, and it is called the four printing methods together with lithography, letterpress printing, and screen printing. Gravure printing is a direct printing method. The groove on the printing plate is printed text and pattern. When printing, the ink is filled in the groove, and the excess ink on the printing plate (the ink on the non-printing surface) is scraped. The ink knife is scraped, and then the printing plate is pressed by the embossing roller to press the ink from the concave surface of the printing plate to the printed matter to achieve the purpose of printing. This article will introduce the price of the Nanjing gravure printing machine.
The printing speed of the gravure printing machine is mainly determined by the length of the transmission distance between the colors of the printing machine. Since there will be color registration on the printed product, if the ink of the front color is not dried, the ink of the latter color will dissolve the ink in front, which will cause color problem. Therefore, if the distance between the inks of the gravure printing machine is larger, the longer the natural drying time, the higher the printing speed. On the contrary, it is difficult to increase the printing speed.
Secondly, the printing speed is determined by the effect of the drying box. The drying effect of the drying box is good, and the more thorough the drying of the ink, the not only the ink of the front color can be dissolved, and the residual of the solvent is relatively reduced. Gravure inks are blown dry by hot air rather than hot baked. First, when the gravure ink is heated, the conjunctiva is very fast, and the coating of the color film may affect the volatilization of the solvent in the ink, which may cause the ink to dry.
The main motor of the shaft drive unit type gravure printing machine drives the plate roller of the printing unit through a long steel shaft, and the line speed set by the man-machine interface is converted into a sixteen-digit binary number in the PLC, given by the digital quantity. The mode is sent to the main motor inverter, which overcomes the problem that the conventional analog quantity is easily interfered and the accuracy of D/A and A/D conversion is damaged.
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