Offset press: cure of machine malfunction

7.11 Malfunction of the machine when the machine is faulty will cause a certain degree of impact on the printed product or equipment. Lighter ones will cause the printed products to be scrapped and the others will be stopped. Therefore, we must do our best to eliminate the fault in the teeth. When a machine failure occurs, it must be eliminated in time. Otherwise, the machine failure will grow from small to large and eventually cause serious consequences. The generation of machine troubles is related to the condition of the machine itself, and the relationship with the operator is also inseparable. Therefore, we must grasp these two factors in order to cure the machine fault.
1. Strengthen management and prevention. The occurrence of machine failures is directly related to the routine maintenance. The better the routine maintenance work is done, the less likely it is that the machine will fail. Even if a failure occurs, the impact is small and can be eliminated in a short time. Refer to the "Machine maintenance" section for how to maintain the machine. The leaders of each unit must strengthen the importance education for operators to prevent them, and establish rules and regulations to regularly check the completion of routine maintenance. Once a failure is found, the operator must stop the process in time and resolutely prohibit the machine from running sick. If it cannot be ruled out by itself, it needs to report to the relevant department in time. Equipment maintenance personnel should make equipment maintenance records, so that through a period of time can understand the common fault parts of the machine to facilitate the preparation of spare parts or to take appropriate preventive measures in advance.
2. Take a scientific attitude and cure the machine failure. When you troubleshoot your machine, you must believe in science and rely on science so that you can minimize the time for troubleshooting and minimize the possibility of inducing other failures. To achieve this, rigorous on-the-job training must be performed for operators or technical maintenance personnel so that they can understand the structure of the machine and be able to master the good methods of troubleshooting general machine failures.
At present, some units do not pay enough attention to it. Some operators use their own experience and subjective awareness to troubleshoot the machine. As a result, this part of the problem is often ruled out and new failures are generated. If a unit's master removes the B-B machine's bumper, use the crank handle to remove the bumper's shaft head. The axle head of the bumper was removed, and the corresponding faults on the bumper were also ruled out. However, the shaft end of the crank handle was deformed and could not be turned. Of course there is one more case than this. Some individuals now have such a mouthful when they repair the machine: When they see the screw, they will be screwed. When they see the pin, they will pull it. If they can't move it by hand, use a hammer to pick it up. The result is that the screw that should not be screwed is unplugged, the pin that should not be pulled is unplugged, and the originally undamaged part is inverted. The consequences of this concept are too serious.
When operating the machine trouble-shooting, the operator should first read the technical specifications provided by the machine in detail, and should really understand and understand thoroughly, and where there is uncertainty, the relevant department (or directly to the manufacturer) should be consulted. Under normal circumstances, according to the instructions of the machine, it can ensure the safety and reliability of operation. However, the machine failures are various and the technical specifications cannot be comprehensive. Therefore, the operator should also have other professional knowledge to troubleshoot the machine.
3. The relationship between science and experience. Since it is called science, it means that it is correct, but some of the experience is correct, and some are not necessarily correct. The right thing is science. Only understanding without experience is not feasible. This is determined by the abstractness of the theory and the concreteness of the practice. There should be no doubt about the things of science, and something with experience should be carefully analyzed. Now many organizations are overemphasizing empirical things, and contempt for theoretical studies, ignoring the guiding role of theory in practice. This practice will inevitably lead to blindness. Therefore, the only way to unify science and experience is to combine theory with practice. In short, we must take scientific measures when troubleshooting machinery, and we cannot ignore the important role of people. Only highly qualified operators can fully apply science to practice.
This section describes the general method of machine troubleshooting. The process of machine maintenance is the process of preventing machine failures. From here can further see the importance of machine maintenance. Although the machine's failures are ever-changing, there are always certain rules to follow. This article provides a general method for identifying and resolving faults from different perspectives. For failures not involved, reference may also be made to the "method described above". Learning to rule out a fault is not the ultimate goal of learning. Mastering the troubleshooting guideline is always effective.