The injection molding machine manipulator maintains long-term stable operation and needs regular maintenance:
One: guide rail and bearing
The guide rails and bearings at all shafts should be kept clean and with good lubrication. If the robot runs in a dusty environment, you need to clean the rails often. If you find any metal fragments or powder, it may indicate poor lubrication. To ensure proper lubrication, it is critical to have a proper linear guide system. Most robots have an automated lubrication system and components that need to be replaced on a regular basis.
Two: Manipulator cycle
One of the main points of keeping a robot running well is simple observation and listening, which can reveal much information about the overall operation of the robot. The robot of the injection molding machine works through specific actions, so listen to any abnormal sounds, such as whistling, squeaking, etc., which indicate that the bearing cannot rotate normally or that some other component is stuck.
The manipulator link moves along the guide rails equipped with power cables and vacuum hoses, which will give a normal click but the sound is smooth and stable. Check any bearings that can be observed to ensure they rotate smoothly. Simply checking and listening for signs of wear or adjustment requires a great deal of help in keeping the robot running optimally.
Three: drive system
If the robot is driven by an assembly-drive gear, be aware of any hesitation or sloshing during operation. All movements except smooth and smooth motion can indicate that the drive system is damaged or there are some foreign objects stored inside. When the manipulator of the injection molding machine pushes down, the method of quickly checking the action or backlash between the assembly beam and the transmission gear is to push and drag the arm and feel abnormal motion (different back and forth motions).
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 assembly beam and the drive gear, it is better to use a long range magnetic stand. After adjusting the backlash according to the manufacturer's instructions, check the full travel of the shaft to ensure that there is no tightness between the assembly beam and the drive gear.
If the backlash cannot be adjusted, the mounting frame and transmission gear may be worn out and need to be replaced. If it is necessary to repair the mounting bracket and the drive gear, it is best to replace both components at the same time to ensure long-term performance. As for the shaft driven by the conveyor belt, pay close attention to the conveyor belt worn down debris and its own damage. Check the pulley carefully and look for signs of dust from the conveyor belt material.
Make sure that the belt and drive pulleys and sheaves are fully aligned. Deviating conveyor belts wear out very quickly. As long as it is a belt-driven system, check the preload of the belt itself according to the manufacturer's instructions. These specifications will tell you: relative to the pulley, the appropriate amount of error in the specific location of the conveyor belt.
Four: pneumatic system
Including the multi-axis servo drive, as long as there are wrist and vacuum grab action, almost all robots will have a pneumatic function. Pay close attention to the suction cup of the filter regulator unit, where the accumulation of water indicates that the humidity of the compressed air source through the system is too high. The presence of a small amount of moisture can be transmitted to pneumatic valves and actuators, causing oxidation and internal contamination, which can eventually cause pressure regulators to stick or actuators to stick or fail intermittently.
If the suction cup is equipped with an automatic dehumidification system, contamination or discoloration on the suction cup also indicates that the moisture is increasing before removal. If water collects in the suction cup, it can enter the system even if the time is short, causing the above problem. If you notice any physical damage to the pneumatic hose, the system may leak.
If the air pressure circuit is filled with air under normal operating pressure and there is a leak somewhere in the circuit, then you should be more likely to notice a noticeable buzz, which will help you determine the location of the leak.
V: Inspection molding equipment
The standard configuration of injection molding machine robots is usually installed on the template of the molding equipment. When the equipment is running fast, vibrations from the molding equipment may be transmitted to the robot and can cause damage. Simply observe the running conditions of the molding equipment, ensure that the mold movement is adjusted to a reasonable state, reduce the shaking or vibration frequency, and extend the life of the robot. In the case of high speed operation, the vibration frequency may be very high and it is best to mount the robot on a support structure independent of the forming equipment.
4G Indoor Antenna
With the rise of 4G network construction in the world, multi-network operation has become the main melody of the network development of operators. Qingdao Unicom's current network status is 2/3/4g coexistence. In the optimization and adjustment, the ideal situation is that 2/3/4G network can have its own independent antenna, so that RF adjustment is convenient and flexible. However, due to the constraints of antenna installation site resources, space shortage, construction cost and other factors, common antenna strategy can only be adopted in network construction in many cases, which not only saves resources, but also brings difficulties to RF adjustment and multi-network coordination optimization. In view of this situation, the Network Optimization Center of Qingdao Unicom combined with the actual situation of the network, made a statistical study of various common antennas, and made an analysis and adjustment plan according to the network demand. There are a large number of 2/3/4G common antenna sites in the current construction. According to statistics, the proportion of common antenna in the current network is over 60%, which is higher than the national average level. Three, the current total antenna situation classification 1. 2/4 g share a common antenna by 2/4 g RRU type of antenna and antenna panel. 2. 3/4G common antenna is divided into: the beautification antenna cannot be adjusted independently, the circuit board antenna cannot be adjusted independently, and the common antenna can be electrically adjusted independently. 3. 2/3/4/G common antenna is divided into: 2/3/4/G common antenna cannot be independently adjusted, and 2/3/4/G common antenna can be independently electrically adjusted. Four, common antenna formation reasons and advantages and disadvantages
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