The Analysis And Research On The Key Technology Of The Delivery In Printing Ptess At Home And Abroad

Delivery assembly is the final element of printing press. Its effect is hadding over the product from the impression cylinder, the printing procedure is finished when the delivery assembly taking the product to the delivery platen. Delivery uint include taking device, a speed reduction device, anti-smearing device, discharge device,which are widely used in high speed printing machine. In the print collection process, the above4points layout design is very important. In order to meet the modern high-speed printing unit of printing machine speed, delivery unit speed should be improved. So, it is important to ensure the stability of the paper collecting device. While paper chain guide directly determines the delivery stability, the other three parts as the paper is an important part of the paper, the control also nots allow to ignore.The main points in this paper as followed:1. Analysis on modern high speed printing machine part of the principle and the actual situation, to find the most suitable for the production of workers operating mode.2. Analysis of distribution of original chains orbit of printing press.Getting the movement curve of chains through the emulation in Matlab. Finding the existing problems of the distribution of chains orbit of the printing press. Designing the developed form orbit in the "joggling in" and "joggling out" point of chains wheel. Getting the movement curve through the emulation in Matlab and contrasting with the curve of the undeveloped form orbit, demonstrating the advantage of the developed form orbit.3. Through the suction brake device for paper role stress analysis, achieve suction roll and fan linkage adjustment, in order to reduce the workload of operators4. Based on the analysis and comparison of the dusting device, the dusting the regional grid, realize local powder quantity control. At the same time, put forward to increase the encoder, to print real-time monitoring, to achieve the required amount of powder and control5. The table automatically drop process of the dynamic analysis, the process of5equations optimization, change the original shock state, to achieve a smooth fall delivery Innovation points:1. Proposed fixed-point dusting control, reduce the amount of powder injection.2. With flexible impact instead of rigid impact, reducing the paper receiving table drop noise.