Advantages of the most popular modified offset pri

Advantages of refitting the plate hanging positioning system of offset press

first, the significance of refitting the plate hanging positioning system of offset press

at present, domestic offset presses use manual plate loading to find rules. Find rules based on experience, up and down version, left and right top version. It is troublesome, laborious and time-consuming. Sometimes, improper pulling force is easy to pull the plate out of shape, or even crack, affecting the overprint accuracy. And related patented technology for a long time, we have been exploring whether we can set the rules once and for all, so that we can print directly on the machine- The relevant structure of some imported high-end offset printing machines gave us enlightenment, so we imagined that the plate hanging positioning system was refitted on the original offset printing machine. After repeated tests and improvements, the plate hanging positioning system of the offset printing machine was finally refitted. This reform has achieved excellent results. The new national standard basically follows the GB8624 (2) 006 standard and changes the original operation method based on experience into mechanical positioning method

2. Advantages of refitting the plate hanging positioning system of offset press

1. It shortens the time of installing plates and finding rules, and improves the work efficiency. Originally, there was no standard when installing the version, so it was very difficult to find the rules. Generally, it took more than 20 minutes to operate each version. After the modification of the hanging version positioning system, it only takes about 4 minutes for each version to find the rules. For a high-speed offset press, 16 minutes is more than 4000 printing times

2. The overprint accuracy is improved and the quality of finished products is guaranteed. It's impossible to find rules by pulling the version manually. It's almost cost-effective to pull it around in the end. The hanging plate positioning system can ensure that the nesting is very accurate. For today's high-precision printing products, it can be said that the nesting accuracy is the product quality

3. It saves the amount of paper used to find rules. It turns out that people have to try to find rules again and again. Every time they try, they need to use some white paper and semi-finished products. After using the hanging version positioning system, there is generally no need to debug, but only need to make a slight fine adjustment

III. plate hanging positioning principle

the plate hanging positioning principle is to first drill a positioning hole on the PS plate, position and expose the film during printing, so that the pictures and texts on each color printing plate are in the same position relative to the positioning hole, and then install a positioning pin on the plate clamp of the offset press. When printing and mounting, just hang the plate on the positioning pin

IV. modification method of hanging plate positioning system

the first step is to have a punching machine, change a single extensive plastic granulator into a combined, intelligent plastic granulator and its supporting positioning pins. Before printing, the plate making film must have a locating hole matched with the locating pin. Then punch the PS version. When printing, position and expose the plate making film and PS plate with locating pins

the second step is to install a locating pin matching with the punching machine on the plate clamp of the offset press. These two things seem very simple. The key is that the accuracy of production must meet the requirements. Because modern printing requires high overprint accuracy, the requirements for positioning system are very strict when riddles are set in each lantern

after more than a year of test and use, it has been proved that this set of hanging plate positioning system is practical and feasible. It is applicable to all offset presses. You may as well have a try. (author/liangminghui)