Automatic quality inspection and analysis of the h

Automatic quality inspection and analysis of cigarette packet printing (Part 1)

in the global cigarette packet printing, so as to revitalize all green circular industrial chains, the national cigarette packet printing can be rated as first-class from design to quality. Apart from whether there is a suspicion of excessive packaging of cigarette packs, the exquisite design, complex technology and strict quality requirements of ecological component grids have brought great challenges to the production of printing plants. As the materials used are more and more high-grade, the proportion of materials in the whole printing cost is also increasing. Reducing the generation of waste products and improving the quality control ability have become an important topic for cigarette bag printing plants

in terms of the external environment, due to the excess production capacity, the current market competition for cigarette packet printing is becoming increasingly fierce. Tobacco companies are more and more strict about the delivery cycle, while at the same time, the pursuit of quality is getting higher and higher. They not only require high quality, but also require predictable quality. While pursuing quality, they also pay more attention to the quality control means of the printing factory. These constantly improving requirements for quality control make the cost of quality management of printing plants higher and higher, and weaken the profitability of printing plants. Facing these challenges faced by cigarette packet printing plants, AVT, headquartered in Israel, has successfully developed a full set of automatic printing detection programs, which have been successfully implemented in more than 900 customers around the world. At the same time, the automatic printing inspection scheme also suggests that enterprises can help printing plants meet the strict quality control requirements of their customers with the help of the "same quality, same standard and same line" project in the national food industry, effectively reduce costs and scrap rate, improve customer satisfaction, and eliminate the return of goods caused by quality factors. AVT system is running in many cigarette packet printing plants in North America, Europe and Asia. Automatic detection can be used for printing various cigarette packs, such as hard shell cigarette packs, paper soft packs, and even filter nozzles

process control and quality assurance in printing because tobacco companies have high requirements for quality, once there is a quality problem, it will cause a large number of returns. In order to reduce the risk, most printing plants adopt the method of manual full inspection of cigarette packets. However, manual full inspection has its limitations, not to mention that people will have the problem of visual fatigue. It is already a very difficult work to detect all kinds of problems that may occur in printing in a very short time. Therefore, in order to truly ensure quality and achieve zero defects, it is essential to adopt automatic printing quality inspection. 100% print quality assurance is not the whole goal of automatic printing quality detection. Even if all printing defects have been detected, waste products have been generated and waste has been caused, which has not really played a role in reducing the cost and improving the efficiency of the printing plant. Therefore, the important goal of automatic printing detection is to reduce or avoid the generation of waste products and reduce the waste rate. Of course, 100% of the generated waste products should be detected

what are the main problems in cigarette packet printing? Figure 1 is a statistical analysis of the problems often encountered in printing and their proportion. Through the analysis of these problems, it can be found that the problems existing in printing, such as color difference, registration, knife line and bar code, account for more than 92% of printing. And these problems are progressive, cumulative and amplified. We call these progressive and cumulative problems process problems in printing. Those problems caused by the stable operation of the domestic spot market of steel raw materials on August 7, such as dirty spots and flying ink, are called random problems. Once process problems begin to appear, if measures are not taken in time, especially in high-speed printing systems such as gravure printing, they will accumulate rapidly until a large number of waste products are generated. However, if the alarm can be given in time through the monitoring, analysis and judgment of the printing automatic control equipment before the human eye can distinguish these problems, and the operator can take measures in time, the process problems may be eliminated before they become waste products. For random problems in printing, it is not necessary to take measures, but there must be means to detect them to avoid the outflow of waste products

(to be continued)