Reasons Affecting The Life Of The Rubber Roller

We have been tireless to say again and again:
The use of rubber rollers is very standard and should be cleaned regularly, but this still prevents the "life" of the rubber roller from shortening the life and maintenance costs. Among them, there are quality problems of the rubber roller itself, but the most important one is related to the operation method of the operator. Based on the experience of many users in the past, we analyzed three reasons why the life of the rubber roller is not long. Starting from the selection First of all, in addition to looking at the quality of the product, it is necessary to have a good after-sales service. Many users choose the rubber roller to illustrate this point. The rubber roller is a vulnerable item, and most users know little about the rubber roller, which means that the user needs timely and thoughtful after-sales service from the supplier. If you don't get after-sales support in time, there is no way to solve the actual problem, then the life of the rubber roller can be shortened.

Second, many users are prone to make the mistake of spending too much time on the rubber roller. The original intention of the user is good: the rubber roller is replaced once every 3 months, and the new product is used every time to improve the quality of the printed matter. But in fact, it is often counterproductive. The rubber roller and the printing press are a running-in process. With the use of the rubber roller, new problems will be discovered, and the next better solution will be achieved to achieve the best use stage. And the rubber roller is constantly replaced, but it becomes the flaw of getting excellent prints. Every time the rubber roller is replaced, it must be stopped, disassembled, installed and debugged. Installation process Installation does not sound difficult, but it is a very important issue. Proper installation of the rubber roller bearing generally includes the proper tightness between the roller neck and the bearing. Nowadays, many users often install their own bearings in order to save costs. In fact, some models have some small accessories between the shaft head and the bearing, which are used to maintain the dynamic balance of the rubber roller, so that the rubber roller can better express its performance. Balanced quality. If the quality of the printed matter is affected by the problem of the rubber roller bearing, some will not be worth the loss. To ensure the lubrication of each bearing and shaft seat of the rubber roller, before the installation of all the rubber rollers, the outer surface of the rubber roller bearing and the rubber roller bearing sleeve and bracket on the machine should be lubricated. Apply once to minimize the rotational impact friction between them due to the back and forth of the ink roller. If it is often found that the plate water, the roller sleeve and the shaft seat are severely worn in a short time, they have to be re-welded and processed, and the roller bearings are often changed frequently, even after the bearing is broken. The surface causes greater damage. The reason is mainly that the lubrication work of the contact surfaces of the individual workpieces is not done well. It is an important step to regulate the pressure of water and ink roller. The pressure is too light, which may lead to poor water transfer and poor ink transfer. If the pressure is too heavy, the friction between the roller and the roller will be artificially increased, so that the ink roller will heat up and increase the squeeze expansion between the rubber rollers. Accelerate its cleavage and aging, while product quality is also affected. When the operator changed the rubber roller, the pressure between the hard roller and the rubber roller was adjusted too much, so that just after starting a shift, the new rubber roller was cracked and scrapped.

In addition, if alcohol dampening solution is used, the pressure adjustment of the water roller is especially careful to prevent the service life from being reduced due to passive transmission. One of the most important reasons for the failure of maintenance is the maintenance factor, which is the surface crystallization and calcification of the rubber roller, the surface of the rubber roller is easy to be scratched, the treatment of the eye, the premature cracking of the rubber roller, and the treatment of aging. It is the most common problem encountered by users during the actual operation. If these conditions are ignored, it may lead to the failure of the entire process. In order to solve the problem of crystallization and calcification on the surface of the rubber roller, most users use special germination paste and effluent water to clean, but it is time consuming, laborious, and invisibly increases the production cost. One trick is to try washing each time with citric acid water after each wash to chemically react some of the calcium impurities on the surface of the rubber roller to form a soluble substance for cleaning. Practice has proved that this method works well and saves money and effort. Once the rubber roller is scratched, it can no longer be used.

There are two main reasons for this:
First, the printing plate is not tight or the clip is not tight. The printing plate often has cracks and cracks at the tip of the printing plate, and the plated ink roller is scratched;
Second, the maintenance of the ink roller is not timely, and the ink, ink residue and other impurities on the rubber roller are increased, which increases the friction, heat and aging of the rubber roller, so that the surface of the rubber roller is covered with numb eyes, and the rubber roller is more serious at both ends. The rubber roller prematurely cracks and aging. The reason for this problem is various. For example, the dry oil in the ink is excessive, so that the ink is dry on the rubber roller; the cleaning agent for cleaning the rubber roller is improperly selected, and the cleaning time is too hasty. The impurities on the rubber roller can not be thoroughly cleaned; the ambient temperature of the workshop is high, and the dampening cooling system works poorly, so that a large amount of heat generated during the operation of the rubber roller cannot be dissipated in time, and the cohesion temperature of the rubber roller is very high: rubber roller bearing The performance is not good, and it is rotated by the squeezing roller, which generates jumping friction, extrusion and the like. All of these factors will accelerate the early splitting and aging of the rubber roller. In addition, daily maintenance is also very important, many printing companies attach great importance to machine maintenance, of which, water, ink roller is one of its key maintenance.

In normal times, check the bearings at both ends of the rubber roller for free movement. If the condition is good, if it is loose or worn, it should be replaced in time. Scrub the surface of the rubber roller to remove impurities such as ink, ink residue and the like. Check whether the rubber on the surface of the rubber roller is good, especially the plate rubber roller must choose the best one. For the rubber roller with peeling off the surface and more eyes, it should be re-polished or cast in time. Whether it is good or bad, you have to go "on the road". Some users always get confused when choosing a rubber roller. Is it cheap or is it good quality? In fact, there is no need to choose between the two, and choosing the one that suits you best is the most effective. This principle is actually very simple to understand. For example, the use of imported rubber rollers on some domestically produced machines is a bit nondescript, and may not bring excellent printing quality. However, there are some quality rubber rollers that are properly used on imported machines. The same excellent quality of printing, just like a piece of clothing, regardless of quality, price, wear the best, most comfortable, that is the best. Many rubber roller manufacturers generally provide rubber roller products for users to use for free when they sell rubber rollers. It is good or bad to use them on the machine for a period of time. It can be said that the life of the rubber roller is short, although it seems to be a quality problem at the beginning, but it is more of a maintenance problem. Users should have their own opinions when facing various rubber rollers. It is best to choose a complete set of products.发送反馈历史记录