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Maintenance points of injection molding machine manipulator

Update:09 Feb 2022

In general, for production applications where the injection molding machine needs to maximize work efficiency and start-up time, the installation and use of a robot is often considered. Unplanned downtime can cause production disruptions that are time-consuming, labor-intensive, and often cost-increasing due to overtime or urgent replacement of machined parts.
Therefore, it is very important for the operator to detect the signal that the robot needs maintenance. From a long-term operational perspective, keeping an eye on some critical operating conditions reduces downtime and costs. There are a few things to note here.

1. The cycle time of the robot
One of the keys to keeping a robot performing well is simply watching and listening, which can reveal a lot about how well the robot is performing overall. Manipulators work through specific movements, so they hear any abnormal sounds like whistling, clicking, etc., which indicates that the bearing is not rotating properly or some other part is stuck. The linkage part of the manipulator moves along the rail with the power cord and vacuum hose, which makes a normal clicking sound, but the sound is smooth and steady. Check any observable bearings to make sure they are spinning smoothly. Just checking and listening for some signs of wear or adjustment can go a long way in keeping the robot in top operating condition.

2. Guide rails and bearings
The guide rails and bearings of each axis should be kept clean and well lubricated. If the robot operates in a dusty environment, the guide rails need to be cleaned frequently. If any metal chips or powder are found, it may indicate poor lubrication. To ensure proper lubrication, it is important to have a proper linear guide system. Most robots have automatic lubrication systems and parts that require regular replacement.

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