Robot manipulators may cause failure, because the manipulator joints are mostly screwed, may be due to prolonged vibration to form loose screws loose, and the formation of mechanical Scattered, the pieces of the interface block fracture, etc. On the other hand, the reason for mechanical hand vibration The looseness of the wire connector is loosened, the looseness of the relay is loosened, and a bad contact of the electric circuit road is formed, which brings about the phenomenon of manipulator chaos, electronic control crash, electric burnout and the like.
Daily protection tasks Note:
1, hydraulic buffer: to be changed on schedule.
2, with a long cylinder head seal, introspection trachea, joint to be promptly changed.
3, 12 months to reflect on the rectification of wire connectors, plugs, sockets and so on.
4, pneumatic components: simple, multi-functional manipulator of all the measures all depends on the gas propulsion, the necessary source of constant volatility small, anhydrous.
Because gas and water are two different media, gas invisible, water visible, water trachea, cylinder, electromagnetic retention will occur within the scale, the formation of electromagnetic valve stuck, channeling gas, gas seal wear leakage cylinder leakage, leakage And other scenes, showing cylinder weakness, prostration, no action or sudden rapid move, trachea, joint burst and other scenes.
To sum up, automated robots can effectively replace the manual to improve production efficiency, and low maintenance costs, but also in the daily maintenance which should be carefully maintained to avoid automation robot failure, to avoid affecting the enterprise's product efficiency.
For the operator, the robot routine maintenance work is very important. Then vibrating plastic injection Xiaobian introduce some precautions:
1, rails and bearings
The rails and bearings should be clean and well lubricated at all axes. If the robot is operated in a dusty environment, the rails need to be cleaned regularly. If you find any metal chips or powder, it may indicate poor lubrication. Ensuring proper lubrication is critical with proper linear guidance systems and most robots have an automated lubrication system and components that need to be replaced on a regular basis.
2, robot cycle
One of the main points of keeping a robot in good working order is simple observation and listening, which exposes a lot of information about the overall operation of the manipulator, which acts through specific actions and therefore listens to any abnormal sounds such as howling, clicks, etc., These indicate that the bearing does not rotate properly or that some other component is stuck and that the mechanical link moves along the guide rail containing the power cable and the vacuum hose to give a normal click but the sound is stable and smooth. Of the bearings to ensure smooth rotation of them.Only need to check and listen to some signs of wear or need to adjust, can greatly help to maintain the best operation of the robot.
3, drive system
If the manipulator is driven by the carrier-drive gear, be aware of any hesitation or slippage occurring during operation. All movements except for smooth and steady motions can indicate damage to the drive system or foreign objects in the robot system. During exercise, a quick way to check the action or backlash between the mounting beam and the drive gear is to push the arm out and feel unusual movements (different back and forth movements).
However, due to the very high accuracy of normal factory tolerances, this test method will be very inaccurate.If you suspect that there may be problems with the mounting beam and drive gear, a good method is to use a long range magnetic table. Adjust according to the manufacturer's instructions After the backlash, check the entire travel of the shaft to ensure there is no tight fit between the mounting beam and the drive gear. If the backlash can not be adjusted, the mount and drive gear may wear and need to be replaced. If it is necessary to repair the mount and drive Gear, then it is best to replace two components at the same time to ensure long-term performance.
As for the conveyor driven shaft, pay close attention to the conveyor belt wear debris and its own damage. Carefully check the pulley, pay attention to the signs of dust from the conveyor belt material to ensure that the conveyor belt and drive pulley and sheave completely arranged in a row. Conveyor belts will wear out very quickly. As long as it is a conveyor-driven system, check the preload of the conveyor itself according to the manufacturer's specifications. These specifications will tell you the appropriate amount of error with respect to the pulley at a specific location on the conveyor.
4, pneumatic system
Including multi-axis servo drives, almost all robots have pneumatic features as long as there is a wrist and vacuum gripping action. Pay close attention to the sucker of the filter regulator unit, where water is accumulated to indicate that the compressed air source Moisture is excessive and the presence of a small amount of moisture may be transmitted to the pneumatic valves and actuators, causing oxidation and internal contamination that may eventually cause the pressure regulator to stick or intermittent sticking or failure of the actuator.
If the suction cup is equipped with an automatic dehumidification system, contamination or discoloration of the suction cups also indicates that the water vapor is increasing before it is removed.If the water collects in the suction cup, it can enter the system even for a short time, causing the above problems.If you notice the pneumatic Hose any physical damage, then the system may be a leak.
If the air circuit is filled with air at normal operating pressures and there is a leak somewhere in the circuit, you should be more likely to find a clear squeal that will help you determine the location of the leak.
5, check the molding equipment
The standard configuration of the robot is usually installed in the forming equipment template.When the equipment is running fast, the vibration from the molding equipment may be passed to the robot and can cause damage.Finish the observation of molding equipment operation, to ensure that the mold movement is adjusted To a reasonable state, to reduce the number of shaking or vibration, can extend the life of the robot in high-speed operation, the vibration frequency may be very high, it is best to install the robot arm independent of the supporting structure of the molding equipment.
6, pay attention to wiring wear
If black particles or powder are found while inspecting the surface of the robot, there is evidence of wear on the robot circuit wiring, but even if you can not find these wear signals, take a closer look at all the power, transformer or encoder cables, both inside and outside the wiring path It is also possible on both sides, because during the production cycle, the continuous rubbing of the robot's wiring or the wiring connected to the cable guides will eventually wear out and fail, ensuring the safety of the cable ties and the proper installation of the cables.
7, check the lubrication
Robots use spring-loaded lubrication rods that only need to be replaced once a year unless there is evidence of inadequate lubrication on the guide rails. An automated lubrication system is provided that can be lubricated continuously along the robot's motion, but with some surfaces on which the robot can not Normal movement then these areas are lubricated manually or periodically with automated system lubrication. If you notice any movement surfaces that are subject to rust, corrosion or wear, or just too dry, they are not lubricated enough. Refer to the handbook for proper lubrication of metal parts Assembly Beams - Traditional gear systems are lubricated automatically with the lube storage unit, but need to be replaced annually.
8, vacuum catch loop
The vacuum should be near instantaneous and proper controller input should be equivalent to grabbing the product.If you find that switching on the vacuum followed by the input light source for more than 2 seconds delays the vacuum line to leak, defective, or switching devices Improper adjustment. Through the plug-in main control panel can be easily tested.
If the robot is equipped with a digital vacuum switching unit, the minimum threshold for the vacuum required to grip the product can be quickly and automatically adjusted.Industrial injection molding considers the process to be done while the robot is operating in autorun mode, saving in memory for each production cycle Set parameters to save time on next production change There are two additional benefits of digital vacuum switching: Fetching threshold signals Electronic filters make up for the vibrations of the product on the vacuum chuck during fast motion Product release threshold and catch Different thresholds can be programmed to ensure proper release under fast production cycle conditions.