Interpreting the 30 Factors That Cause Platemaking Equipment Failure

The pre-printing plate equipment has a high proportion of faults due to external factors. The reasons are many, and the solution must be determined according to the actual situation. In the course of maintenance, the author summarizes the 30 factors that are likely to cause the failure of plate-making equipment. These factors are inextricably linked with equipment failures. Of course, there may be some other important factors that may not be included. However, careful analysis of these factors can ensure that The normal operation of equipment and the rapid release of faults are briefly described below:

1. Dust: A plate prepared especially for later generations of electricity, photosetting equipment, precision equipment, dust is the biggest natural enemy of such machines, dust can cause great harm to the equipment, so in daily maintenance, clean Most important.

2. Oil pollution: Due to the influence of precision mechanical friction, almost all equipment uses different types of lubricants. In the long-term lubrication process, affected by temperature, dust, and the powder generated during friction, the oil is extremely likely to form oil and directly cause mechanical obstruction and local temperature increase, which is also an important factor causing mechanical failure of the device.

3. Contamination: Contaminated objects include two aspects, one is oil contamination, and the other is contamination caused by the combination of impurities in the air or accumulated debris and moisture during operation of the equipment. Initial contamination does not generally have a major impact on the equipment, but long-term accumulation can easily cause damage to the equipment locally, such as dirty spots on the monitor.

4. Raw material adhesion: The raw material adhesion performance is more serious in the development machine and the proofing machine. It is formed during the development process of the developing machine, and the film surface material and the developing solution chemically react, and it is easy to adhere to each roller. If the proofing ink is improperly cleaned, it can easily adhere to the ink roller and the rubber roller. Therefore, maintaining regular cleaning is a good way to solve the problem of raw material adhesion.

5. Wear: The majority of wear occurs in parts where machinery is often active, such as various plate-making equipment bearings and active screw clamps. The most effective way to reduce wear is to add more oil.

6. Vibration: Vibration will not only cause the equipment itself to malfunction, but also may cause problems with the quality of the product. After effectively ensuring the correct installation of the equipment, it must be constantly tested for its stability and level.

7. Loosening: Most of the loosening is caused by external factors, such as the vibration of the equipment. During daily maintenance, it is necessary to check the tightness and fixation of each screw.

8. Leakage: It refers to the leakage of the protective liquid after aging or impact of the components of the prepress equipment, causing the temperature of components to rise and burn out, such as circulating cooling water in the SCREEN P-641-FW duplicator lamp.

9. Corrosion: Most non-metal devices with volatile liquids have varying degrees of damage. Substances that are attached to the surface of the device and are not removed in time are the main cause of corrosion.

10. Creep: The process of creep is generally not easy to express because creep can be expressed both mechanically and electronically. Therefore, minor changes in the parameters of the equipment should be taken into account during the inspection of the equipment.

11. Stress Deformation: Stress Deformation is a physical phenomenon that occurs more often at work in equipment. After the work is completed, the lack of timely adjustment of the equipment is an important factor affecting the deformation of the mechanical and circuit board slots of the equipment.

12. Scratches: The equipment in operation is scratched by the impact of external objects. Scratches can directly cause major equipment failures and may also affect the quality of products, such as roller scratches on electrical extensions.

13. Cracks: The main cause of cracks is the long-term impact of equipment or gravity. In the event of a crack, under normal circumstances, do not repair, in order to prevent secondary cracking equipment damage.

14. Fever: After the electronic device is powered on, there is usually a phenomenon of heat generation. After the metal mechanical friction, there is also a phenomenon of heat. Electronic heating requires an auxiliary heat sink, while metal machinery relies on its own thermal conduction to reduce heat dissipation. Daily equipment testing needs to pay attention to the degree of heating of the equipment.

15. Abnormal sound: In the course of operation of the machinery and equipment, the sound produced by the heat wear and other factors will cause the normal sound to be stopped and overhauled in a timely manner. Otherwise, it is easy to expand the fault.

16. Short circuit: Short circuit is often accompanied by damage to other components. The short circuit itself is caused by component aging, human error, etc. After a short circuit occurs, do not apply power immediately. Check the cause of the fault and then conduct a power test.

17. Insufficient insulation: The aging of the equipment and the heat during operation can cause the insulation performance of the insulation to decrease. Poor insulation can short-circuit the device. Be as generous as possible when controlling and replacing components or circuits.

18. Continuity barrier: It is the phenomenon that no current passes through the movable element after the guide body or electronic switch, relay and other components are affected by voltage, current, and contact resistance. Continuity barriers can generally be tested by turning on the power.

19. Resistance change: The resistance of the conductor changes with the temperature, but it cannot change to the resistance at room temperature after the change. We call it the resistance change. In addition to the influence of the material itself, the resistance change also has a greater relationship with the passing current. During the repair process, pay attention to replace the same element or conductor with the original resistance.

20. Capacitance change: The change of capacitance has a great relationship with the manufacturing process. Pay attention to the operating voltage of the capacitor. Long-term overvoltage operation can easily change the value of the capacitor.

twenty one. Fatigue: The work of the equipment should have a certain amount of rest time. For long-term uninterrupted work, fatigue occurs in every aspect of the equipment, and many failures are directly related to fatigue. Although many devices are marked with long-term work, if they can take a rest for l-2h every day, the operation will be more stable.

twenty two. Corrosion: Corrosion is the same as corrosion, except that the target is different. Corrosion and metal objects have a greater relationship. The obvious feature of corrosion is the production of rust alone on the surface of the metal field that affects the work of the equipment. There are also many equipment rusted in the active areas due to the lack of necessary oil protection.

twenty three. Loss: The process of losing equipment performance and parameters during work is called loss. The loss was caused by the overloaded operation of the equipment. The loss problem was also related to the design of the electrical performance of the equipment.

twenty four. Poor lubrication: Lack of oil or high local oil temperature is a feature of poor lubrication. Poor lubrication causes direct mechanical friction between the mechanical metals and causes mechanical failure of the equipment. The result will be wear.

25. Improper cooling: The heat dissipation of electronic equipment needs to determine its heat sink according to the degree of heat generation. When the electronic equipment needs to be partially cooled and the outside temperature is high, it is extremely easy to cause improper cooling.

26. Hardening: Hardening is the chemical reaction of a non-metallic substance after it has been exposed to high temperatures. There is also oil and dust gathered into a hardened substance.

27. Softening: In contrast to hardening, softening is a phenomenon in which the strength of a component or device is weaker than normal when the device is subjected to vibration or high temperatures.

28. Charging: It is a fault phenomenon that can easily occur when a short circuit or a local overheat occurs in a component. For example, the temperature of the electric extension is too high and the optical fiber around the scorch is too high.

29. Electrical parameter drift: When the external voltage is bake to the main board, it will fluctuate greatly, and make the parameters of the components change with the large fluctuation of the voltage during the operation. This phenomenon will cause the fixed working point of the components to drift and form in the long term. Electrical parameter drift phenomenon.

30. Deterioration: Due to its own quality problems or the impact of current and other phenomena, so that the performance of the component changes greatly and can not work, called deterioration. We must accurately measure the replacement of components during maintenance to prevent secondary deterioration of the circuit due to deteriorated components.

The above description of the 30 factors of the plate-making equipment failure is briefly described. In most of these factors, the device exhibits pre-symptoms and can be detected in a timely manner. In actual production, as long as full participation is possible, many failures can be prevented and eliminated in a timely manner.