Arrangement structure of the ink path system of a commercial rotary offset printing machine

Abstract

The invention discloses an arraying structure of an ink path system of a commercial rotatory offset press. The arraying structure comprises an ink delivery device, a water supply device and a connector. The ink delivery device comprises an ink supply portion, an inking portion and an ink spreading portion. The ink supply portion comprises a duct, a duct roller and an ink transfer roller which arearranged on the left upper side of a plate cylinder. The inking portion comprises a first inking roller, a second inking roller and a third inking roller. The ink spreading portion comprises a first ink spreading roller, a second ink spreading roller, a third ink spreading roller, a fourth ink spreading roller, a fifth ink spreading roller, a first ink vibrating roller, a second ink vibrating roller and a third ink vibrating roller. The water supply device comprises a fountain, a fountain roller, a metering roller, a water vibrating roller and a dampening roller which are arranged on the leftlower side of the plate cylinder. The connection device comprises a first connection roller, a second connection roller and a third connection roller. The first connection roller contacts with the left upper portion of the water vibrating roller, and is mounted on a first clutch mechanism. The second connection roller contacts with the left portion of the first inking roller, and is fixedly mounted in a way in which pressure can be adjusted with the first inking roller. The third connection roller contacts with the left lower portion of the first ink vibrating roller, and is mounted on a second clutch mechanism. By the arraying structure of the ink path system, uniformity in quantity and color of printing ink can be realized.

Description

technical field [0001] The invention relates to an arrangement structure of an ink path system of a commercial rotary offset printing machine. Background technique [0002] The inking device of the offset printing machine transfers the ink stored in the ink fountain to the above-mentioned roller column in the order of the ink fountain roller → ink transfer roller → ink distribution roller → string ink roller → inking roller, and supplies the ink evenly and appropriately to the roll. Printing is applied to the paper by the printing section on the printing plate wound on the outer peripheral surface of the printing plate cylinder. The ink system is an important part of the offset printing machine. Its structure and performance directly affect the transfer and transmission of ink, and are also an important factor in determining the printing quality. Therefore, it is necessary to properly design the ink supply path, and at the same time do a good job in the design of the water p...

AI Technical Summary

Problems solved by technology

In the actual commercial packaging printing process, the arrangement of ink rollers with single-ink path ink transfer has relatively poor adaptability to the comprehensive printing of various printing materials such as cardboard, coated paper, light-weight coated paper, and film. Problems such as insufficient ink distribution and ink flow caused by the road ink method, in commercial packaging printing, when there are both large solid printing and dot overprint printing, it is easy to have ink piles, ink streaks, ink shortage ghosts, ink color unevenness, etc. Printing quality problems such as uniformity and color difference

The method of separation of ink and water can easily cause problems such as ink piles, water bars, and uneven water films on the ink rollers and water rollers for commercial packaging printing, which has a large change in the amount of ink in the layout of graphics and text. In dot overprint printing and printing with small and medium ink volumes, the way of water-ink separation cannot achieve water-ink connection, water-ink co-coating and proper water-ink emulsification in the actual printing process, and ultimately cannot achieve ideal printing quality

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