With the continuous development of the printing industry, people have higher and higher requirements for the quality of printed products. The quality of printing equipment directly affects the quality and timeliness of printed products. The printing equipment at the Printing Center of Gansu Daily includes the phototypesetting machine, film developing machine in the laser phototypesetting workshop, the plate making machine in the platemaking workshop, the PS plate developing machine, the rotary machine and auxiliary equipment in the printing workshop. If the equipment in the laser photolithography workshop is not properly maintained or the equipment fails, it will cause film waste and directly affect its quality sub-target; if the equipment in the platemaking workshop is not properly maintained or the equipment fails, it will cause the waste of the PS version and directly affect Its quality is divided into goals; if the equipment maintenance of the printing workshop is not in place or the equipment fails, it will cause paper waste and even directly affect the quality goal of the printing center. Advanced printing machines such as KBA Roland in the Printing Center of Gansu Daily have the characteristics of high automation, fast printing speed and good product quality. However, as the service life increases, the degree of wear and damage of the equipment also increases. In addition to natural wear, some parts are accelerated wear and damage caused by the harsh operating conditions of the equipment. If the normal maintenance and maintenance of the printing press cannot be performed normally, the technical performance of the equipment will be reduced, thereby reducing the printing quality. Therefore, good maintenance of printing equipment can improve the application rate of the equipment, ensure the printing quality and smooth production, and reduce unnecessary losses caused by improper maintenance.

The following points fully explain the importance and necessity of equipment maintenance:

First of all, in terms of oil circuit, the lubrication of production equipment is an important part of equipment maintenance. Keeping the oil path of the printing machine unblocked is related to the lubrication of the moving parts of the entire machine. It is necessary to regularly replace the engine oil and clean the oil line filter device, so that the oil flowing into the pipeline does not contain impurities and avoid partial blockage of the oil path. Especially the needle roller bearings supporting the drum of the unit, if there is no lubricating and cooling of the oil, it will cause the bearing and the drum shaft to dry friction for a long time. When the abnormality is found, the shaft and the inner ring of the bearing have been glued. The shaft is badly damaged.

Secondly, from a mechanical point of view, only when the equipment operator strengthens maintenance and maintains the mechanical moving parts of the machine clean and lubricated and flexibly operates can the technical performance of the equipment be fully utilized and the equipment be kept intact. If the machine staff understands this and maintains and maintains cleanliness on a regular basis, and the ink accumulated on the machine is removed in time, the maintenance rate of the machine can be reduced. This can not only reduce downtime, improve production efficiency, but also save spare parts replacement costs.

Again, the electrical aspects also need to be maintained. Sometimes too much dust accumulates at the relay contacts inside the electrical control box of the machine, resulting in poor contact of the relay contacts, making the machine inoperable. There are many other similar problems, such as excessive dust accumulation in the motor will affect the movement and reset of the carbon brush holder, and affect the compression force of the carbon brush spring on the carbon brush, making the carbon brush and the commutator copper head bad contact , Will also cause difficulty in the operation of the machine.

Finally, in terms of air path, the ink roller, water roller, separation plate and ink transfer roller of the printing press are controlled by the control valve to control the movement of the cylinder piston. Sometimes, the water valve in the control valve or cylinder causes damage to the air valve seal, resulting in air leakage from the control valve or cylinder, which makes the ink roller and water roller off the plate poorly. In addition, due to the accumulation of ink in the motion control mechanism, the movement of these moving parts is not flexible, but the burden on the control valve and the cylinder is increased, which leads to the vulnerability of the control valve seal. In addition, due to the aging of the air hose, the pipeline leaks, and the pipeline pressure drops rapidly, so that the control valve cannot be opened, and the clutch pressure action cannot be completed. If the pressure is increased, the life of the machine will be shortened. All these problems are caused by poor maintenance, so it is very important to strengthen maintenance and do daily, weekly and monthly maintenance. It can not only extend the service life of the machine, but also improve production efficiency.

The above-mentioned maintenance and supervision of the equipment section are inseparable. Being diligent in checking and strangling hidden dangers in the cradle is a magic weapon to ensure the normal operation of the equipment. Fast maintenance is a favorable guarantee for the printing time, and excellent technology is the prerequisite for equipment maintenance. Therefore, we must always learn new knowledge in our daily work, continuously accumulate experience, and improve the management level and maintenance ability of the equipment, so as to continuously improve the intact rate of the equipment and ensure the timeliness and quality of the printed matter. (Note: The working unit of the author is the Printing Center of Gansu Daily)

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