These 6 key issues must be known for the daily maintenance of printing presses!

[China Packaging Network News] Printing machine maintenance is divided into daily maintenance, weekly maintenance, monthly maintenance, quarterly maintenance, annual maintenance, etc., of which daily maintenance is to be done every day. The purpose of maintenance is to extend the service life of the equipment and indirectly save the company ’s use cost. At the same time, the maintenance of some printing equipment can also play a role in avoiding production accidents. An infrequently maintained equipment can easily cause major production accidents due to damage to local parts. This article aims to introduce 6 key issues in daily maintenance of printing presses .

Here are some key points for the maintenance of printing presses:

1. Pressure roller

If the pressure roller of the printing machine is not clean, the printing pressure will be uneven during the production process. A common situation is that there is tape or dry ink on the pressure roller, so that the height of the pressure roller will become higher, resulting in increased printing pressure. Common quality accidents are blurred printing and unclear articles or patterns. Therefore, the pressure roller must be kept clean.

2. Plate cylinder

The printing plate cylinder is not clean, which will affect the printing plate pressure and printing pressure during the production process. Common conditions include tape and dry solid ink, and unevenness on the liner. In this way, the production will directly increase the height of the printing plate, resulting in inconsistent printing plate heights, causing blurred printing, unclear dots, and ghosting phenomena.

3. Each shaft and screw

Bearings and screws are mainly slotted units and paper feed units. If the screws are not cleaned and lubricated frequently, the bearings are easily damaged, which affects the life of the screws and bearings and the accuracy of production. For example, the pressure line bearing often generates vibration without adding oil. After the vibration becomes larger, the carton pressure line will produce a burst line or a false line pressure. The maintenance of screw and bearing is the most important link.

4. Ground Rail

The cleaning of the ground rail is the easiest to ignore. If the ground rail of the printing machine is not cleaned for a long time, it will affect the parallelism of the printing unit. The non-parallel ground rail of the unit directly affects the printing accuracy, so high-end printing machines have very high requirements on the ground rail. Therefore, the ground rail must be cleaned daily.

5. The surface of the anilox roller and the ink tube

The anilox roller is the heart of the printing machine. If the anilox roller is not clean, it will cause printing to be white and the color is inconsistent. Therefore, the anilox roller must be cleaned and maintained daily, rather than being blocked and then maintained. The maintenance of the anilox roller is a daily maintenance. When the anilox roller is not used, the cleaning solution or washing powder should be used for circulating cleaning to achieve daily cleaning, so as to ensure the printing quality.

6. Clean the surface of the machine and above the ground

The biggest impact of equipment cleaning is to stop the plate and printing to be white. Many factory equipment surfaces are very clean, but dust is everywhere on the equipment and the ground. This dust will enter the ink or printing plate surface at any time during the production process, resulting in printing downtime and printing whiteness.

Editor

The six aspects of the daily maintenance of the printing press are only part of it. Secondly, different equipment maintenance methods should be developed according to different equipment. If the equipment is not properly maintained, the downtime of the printing press will increase, and the downtime will be reduced after the equipment is maintained. The efficiency will also be improved, and the quality of the products will be improved and stabilized.