Among the many types of press brakes, they can be divided into several types according to different power operation modes. Among them, electro-hydraulic press brakes are the most widely used, and this press brake can be further divided into More types, such as electro-hydraulic synchronous bending machine, electro-hydraulic servo bending machine and electro-hydraulic CNC bending machine, etc. Among them, electro-hydraulic synchronous bending machine is a popular type for some sheet metal processing factories, because Its bending synchronization is better, and the bent products are more in line with the standard, but there will be some failure problems in the long-term production process, these problems will affect the production process, and need to be repaired in time, then the following Puli Heavy Industry Technology will introduce some common faults and troubleshooting methods to you, let's take a look.
Common problems of electro-hydraulic synchronous bending machine:
There are many cases of failure problems in the use of electro-hydraulic synchronous bending machines. Below, Puli Heavy Industry Technology will introduce a relatively common problem, let's take a look.
1. First of all, the problem of the slider and the guide rail of the electro-hydraulic synchronous bending machine may cause the up and down movement of the oil cylinder for a long time and the vibration of the pressure will cause the guide gap to become larger, and the inclination and jitter of the slider's up and down movement will occur. , will greatly damage the guide rail and the slider lining, and will seriously affect the accuracy and efficiency of the bending.
2. The positioning error of the back gauge, the error of the back gauge can be affected in many places. First of all, the screw rod of the back gauge and the polished rod or linear guide should be cleaned and lubricated regularly, responsible for the back gauge. There are impurities attached to it, which will damage the screw rod and the polished rod for a long time, which will affect the precision positioning of the back gauge, and then the deviation of the parallelism between the linear guide on the back gauge beam and the die plane is too large. In this case It is necessary to loosen the shaft timing belt, carefully adjust the parallelism tolerance range, and then install the timing belt.
3. The loosening of the oil cylinder of the electro-hydraulic synchronous bending machine and the nut on the connecting rod of the slider will cause the error of the bending angle and the machine cannot find the reference point for pick-up.
4. When bending short sheet metal, special attention must be paid to the bending in the middle, otherwise the stability and synchronization of the torsion axis balance system of the bending machine will be affected due to the eccentric load, resulting in different bending angles on both sides. Happening.
Troubleshooting method of electro-hydraulic synchronous bending machine:
If the electro-hydraulic synchronous bending machine fails, then the following methods can help you troubleshoot.
1. Ask the equipment operator, the operation status of the hydraulic system of the electro-hydraulic synchronous bending machine, including: whether the hydraulic system of the electro-hydraulic synchronous bending machine is working normally: whether there is any abnormality in the hydraulic pump: whether the hydraulic oil is inspected for cleanliness Time and results: Cleaning and replacement of filter elements: Whether the hydraulic components were adjusted before the failure occurred: No sealing components were replaced: What abnormal phenomena occurred in the hydraulic system of the electro-hydraulic synchronous bending machine before and after the failure: What happened to the system in the past Faults, how to eliminate them, etc., need to be understood one by one.
2. Look at the actual working conditions of the hydraulic system of the electro-hydraulic synchronous bending machine, and observe whether there are problems with the system pressure, speed, oil, leakage, vibration, etc.
3. Listen to the sound of the hydraulic system of the electro-hydraulic synchronous bending machine, such as: impact sound, pump noise and abnormal sound, and judge whether the hydraulic system is working normally.
4. Touch the temperature rise, vibration, crawling and the tightness level of the joint to determine whether the working state of the moving parts of the hydraulic system of the electro-hydraulic synchronous bending machine is normal.
