There are various faults in the hydraulic system of the automatic molding machine

There are various faults in the hydraulic system of the automatic molding machine
There are various faults in the hydraulic system of the automatic molding machine. For example, oil contamination can cause hydraulic system pressure, flow or direction failures, making hydraulic system fault diagnosis very difficult.
General Principles of Troubleshooting
Most hydraulic system failures in molding machines do not happen suddenly. There is always a warning before failure. If this warning is not heeded, when it develops, it will malfunction to some extent. The causes of hydraulic system failures are manifold, not random. In order to diagnose faults quickly and accurately, fully understand the characteristics and laws of hydraulic faults:
1. Check the working environment of the hydraulic system
The hydraulic system of the molding machine needs to work normally and needs a certain working environment and working conditions as a platform. Therefore, at the beginning of fault diagnosis, it is first necessary to judge and determine whether the working conditions and surrounding environment of the hydraulic system are normal, and to correct the unqualified working environment and conditions in time.
2. Identify the fault area
When judging the fault location, the relevant faults in the area should be determined according to the fault phenomenon and characteristics, the scope of the fault should be gradually narrowed, the cause of the fault should be analyzed, and the specific location of the fault should be found to simplify complex problems.
3. Establish a good operating record
Troubleshooting is based on operating records and some system parameters. The establishment of system operation records is an important basis for preventing, finding and dealing with failures. The establishment of equipment operation failure analysis table is helpful to quickly judge the failure phenomenon.
4. Traditional Fault Diagnosis Methods
Logic analysis method is a traditional method of hydraulic system fault diagnosis. This method is realized through comprehensive analysis and state judgment, that is, maintenance personnel understand the basic principles of the hydraulic system through "seeing", "listening", "touching", "smell" and simple tests, and judge faults and faults through work experience. reason. The specific method of the method is that when the hydraulic system fails, there are many possible reasons for the failure. Usually, the method of logical algebra is used to list the possible reasons for failure, and then make logical judgments one by one according to the principle of first easy and then difficult.
In the process of fault diagnosis, engineers and technicians are required to have rich knowledge of hydraulic systems and strong ability to analyze and eliminate problems to ensure the effectiveness and accuracy of diagnosis.
5. Fault Diagnosis Method Based on Parameter Measurement
The reason for the failure of the hydraulic system of the molding machine is the abnormal change of the working parameters of the system. Therefore, when the hydraulic system fails, it must be the failure of some components or some components in the system. That is, some parameters deviate from the specified values. Through parameter measurement and logical analysis, faults can be found quickly and accurately.
Parameter measurements can not only diagnose system failures, but also predict possible failures. And this kind of prediction and diagnosis is quantitative, which greatly improves the speed and accuracy of diagnosis. This kind of detection is directly measured, the detection speed is fast, the error is small, the detection equipment is simple, and it is suitable for the detection of any hydraulic system. There is no need to stop or damage the hydraulic system during measurement, and almost any part of the system can be tested, not only to diagnose faults, but also to perform online monitoring to predict potential faults.