How is the fault repair of the advanced injection molding machine?

The advanced injection molding machine is mainly used in the automobile industry, home appliance industry and packaging industry. Its main performance feature is that the design of the structure expands the space of the mold. It adopts a fast oil circuit design, and its speed will be faster. From the traditional slow high pressure to fast high pressure, its running time can be saved by 50% to 80%. The advanced injection molding machine is controlled by the mold opening back pressure, which can reduce the vibration of the machine and protect the mold from damage. The advanced injection molding machine can also realize the statistics of the quantity and quality of the products. It is mainly controlled and calculated through the control panel. The advanced injection molding machine has a memory function, can record the entire operation process of the injection molding machine, can display the stored data and the function of the process, and analyze it to compare with the original normal data, and adjust during this process. The temperature can also be controlled. , Through the temperature monitoring system. To repair a relatively unfamiliar circuit board of an advanced injection molding machine without any schematic diagram, the so-called "experience" in the past is difficult to achieve. Although people with deep hardware knowledge are confident in repairing, if the method is improper, it will work. It's still half the effort. So, what can be done to improve maintenance efficiency? Use tools: multimeter, magnifying glass When holding a circuit board of an advanced injection molding machine to be repaired, it is a good habit to first visually inspect it, and use a magnifying glass when necessary. What to look at? Mainly look: 1. Whether there is disconnection; 2. Discrete components such as resistors, electrolytic capacitors, inductors, diodes, triodes, etc. are disconnected; 3. Whether the printed circuit board connection line on the circuit board of the injection molding machine is broken or stuck; 4. Has anyone repaired it? What components have been moved? Whether there are operational errors such as false soldering, missing soldering, and reverse insertion. After confirming that the repaired part is not in the above condition, first use a multimeter to measure the resistance between the power supply and the ground of the circuit board of the advanced injection molding machine. If the resistance is too small, only a few or more than a dozen ohms, it means If a component is broken down or partially broken down, measures must be taken to find out the broken down component. The specific method is to supply power to the circuit board to be repaired, and touch the temperature of the components on the circuit board of the injection molding machine by hand. The hot ones will be the key suspects. If the resistance value is normal, use a multimeter to measure the discrete components on the board, such as resistance, diode, transistor, field effect tube, dial switch, etc. The purpose is to first ensure that the measured components are normal. Our reason is that you can use a multimeter. To solve the problem, don't complicate it.