What is the main structure of the gravure printing machine, let me introduce it.
The main structure of the gravure printing machine is composed of five parts: paper feeding, ink feeding, printing, drying and paper delivery.
1.In the paper feeding part, the sheet-fed gravure printing machine is a stack-type single-sheet continuous feeding, and the web-fed gravure printing machine uses the web to continuously feed the paper.
2. The arrangement of the plate cylinder and the impression cylinder in the printing part has three types: vertical, horizontal and inclined, and the plate cylinder is arranged at the bottom. Generally, each unit has 1 plate cylinder and 1 impression cylinder. In order to increase the printing pressure, some are equipped with 2 impression cylinders.
3. The ink feeding device includes direct ink feeding, which partially immerses the printing plate cylinder in the ink groove, and indirect ink feeding, which transfers the ink to the printing plate cylinder by the ink outlet roller immersed in the ink groove. ink method.
4. The drying part uses hot air heated by electricity or steam, and some use infrared or far-infrared lamps to dry the printed matter.
5. In the paper delivery part, single sheets of paper are piled up into piles, and rolls of paper are piled up by cutting and folded paper tapes or rewinding them into rolls. The structure of the printing part of the web multi-color gravure printing machine is two types: organic type and satellite type. The former is to set the unit according to the required number of colors, each unit has 1 printing plate cylinder and 1-2 impression cylinders, and the paper delivery part adopts the rewinding method. Satellite type four-color gravure printing machine, the printing part has 1 large impression cylinder and 4 sets of printing plate cylinders. There are also combinations of gravure printing with lithographic or letterpress printing, die-cutting, etc. to meet the different requirements of printed matter.
Post time: Oct-15-2022