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The injection molding machine is the crystallization of the integration of machinery, electric control and hydraulic pressure. The electrics are complicated, the hydraulic pipelines are crossed, and the controllers are diverse. The products have been malfunctioning from the 1980s to the present.
How to repair the injection molding machine?
Action: First, check whether the display light of the mold opening valve on the output board is on or not. It indicates that the computer output is normal, and there is a problem with the circuit from the computer to the mold opening valve. Mold action, if the mold can be opened smoothly after topping, it is to confirm the route problem and re-pull a line to solve (circuit problem).
Because the internal circuit diagram of the injection molding machine controller is quite complicated, the manufacturer does not provide it. Therefore, there is no need to clarify in detail. It is important to understand the role of each part, the function of each board, the destination of the interface, the meaning of the LED light, etc. Nowadays, there are many models of injection molding machine controllers, which are updated quickly, and different manufacturers and different models are often very different. To understand its commonality and individuality. Look at the electrical diagram of the injection molding machine and digest the electrical diagram of the injection molding machine. For each electrical component, such as contactors, relays, time relays, etc., as well as the input and output of PC and PLC, please indicate one by one on the electrical diagram.
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