The basic guarantee of standardized operation printing

The standardized operation of the machine has at least four advantages: First, the machine performance is stable, the failure rate is low; Second, the product quality is reliable; Third, the work efficiency is high; The fourth is to help develop a rigorous work style, scientific analysis, problem solving Effectively improve their own technical level. Take the previously mentioned ink-and-wash balance, whether or not the ink roller can be installed and adjusted in accordance with the specifications of the machine's operating instructions is a prerequisite for controlling the ink-water balance. If the pressure between the rollers is light and heavy, and the rubber roller bearing is poorly lubricated, it will inevitably make the water transfer and ink transmission unstable, aggravate the abrasion of the rubber roller mechanism and cause all kinds of failures, and the machine must be operated by high-quality people. Play a role. In our daily work, we generally pay more attention to scientific methods. We must use small and medium-sized machines to adjust ink and water, wash and erase rubber, and find out a few methods to standardize operations and continuously summarize experience.

The author once published "On How to Improve the Ink Stability of Printing Products" in the "Printing Technology" magazine in June 2004. Many of them are examples of standardized operations. Even adding new ink to ink fountains and adding new inks are also To standardize otherwise the new ink's poor liquidity, ink will unevenly uneven natural ink. Just before writing this chapter, I also criticized my apprentice for such things. As long as one place is not standardized, it will affect the work. Although I have operated imported equipment for 10 years, I was guilty of difficulties when your journalist asked me to talk about the experience of machine maintenance. Because our machine has been operating properly under our company's proper management and under our normalized operation, there have been no major failures. It can be seen from this that how important it is to become the leader of a large-scale equipment.

To ensure the ink balance also requires a standardized operation.

(1) Fountain solution

First of all, the ratio of fountain solution must strictly implement the supplier's recommendations. Some operators have found that increasing the dampening solution or isopropyl alcohol content after the product is dirty does not always cause more harm. Secondly, it is necessary to analyze and master the variation of the pH and conductivity of the fountain solution, in which the conductivity has a certain guiding significance. If the conductivity is too high, it indicates that more impurities in the water should be replaced with fountain solution. In addition, regular cleaning of water tanks, water pipes, etc. should be performed so that the amount of dampening fluid or alcohol actually inhaled during operation of the dampening system does not match the preset value, misleading the operator to determine that various failures have occurred.

(2) ink roller

First of all, we must firmly follow the machine's operating instructions to adjust the pressure between the rollers by rolling the width of the ink bars. If you do not take ink-wash balance seriously, you cannot talk about it. Second, the surface of the rubber ink roller must be cleaned and maintained without being crystallized, and the hardening should always maintain its good ink transfer and water transfer performance. In particular, the metering water roller and the reel-water roller in the alcohol dampening system are more “squeezing”, as long as there is a little bit of scratching on the ink scale, etc., it will affect the product quality.

(3) Other factors

Correct lining, ideal printing pressure, high-quality ink and paper, and Feida's stable paper feeding are all important factors that ensure the ink-water balance.