The core of maintenance work is the judgment and handling of faults. It involves a wide range of knowledge, high complexity, and a certain depth (such as comprehensive professional knowledge level). It is necessary to have bothBasic knowledge of mechanical equipment maintenanceAnd there will also beBasic knowledge of hydraulic maintenance, there should also beBasic knowledge of electrical maintenance.

In fact, the maintenance work of injection molding machines is not only difficult, but also a process of continuous learning and progress. As long as you master the basic working principles and methods of injection molding machines, regardless of the type of machine, there is always a set of maintenance procedures that can be explored to ensure the normal operation of the injection molding machine.

The maintenance worker must first understand and master the content of the operation manual of the injection molding machine, be familiar with and master the mechanical components, circuits, and oil circuits of the injection molding machine, understand the working process of the mechanical, circuit, and oil circuits of the injection molding machine during normal operation, and understand and master the inspection and maintenance methods of electrical components and hydraulic components. Clearly distinguish between normal and abnormal working conditions to avoid misjudgment and disassembly during free time.

Maintenance work requires an understanding of equipment operation methods and basic knowledge of injection molding, as well as the ability to use injection molding machines correctly. If you don't know how to operate the injection molding machine, maintenance work is very difficult, and identifying faults may also be unreliable. The circuit board and electrical components in the injection molding machine are affected by factors such as high temperature, environment, and time for a long time. The deviation of the working points of the components and the degree of aging of the components are all within the normal range.

So, debugging the injection molding machine is also one of the essential basic skills in maintenance work. Understanding the working program of injection molding machines and debugging their electronic circuits and hydraulic oil circuits is a crucial step.

To achieve accuracy, reliability, and timeliness in maintenance work, it is necessary to study and master the contents of the user manual for various types of injection molding machines. In general, the maintenance process usually involves the operation of circuits, oil circuits, and mechanical components. And the calibration work is carried out in reverse, such as mechanical actions and locking pressure. The oil circuit and circuit can be found, and if the circuit output is normal, the oil circuit valve can be calibrated.

If the oil circuit is working properly, adjust the circuit electronic board. When conducting a unified investigation, but the three relationships are interdependent and mutually controlled. The correct use of instruments and meters, calibration of detection circuits, maintenance of oil circuits, and adjustment of the position and action of mechanical parts are important means of diagnosing faults.

Generally, injection molding machine manufacturers only provide the electrical block diagram of the equipment, the block diagram of the oil circuit, and the main parts of the machinery, which is not enough for maintenance work. Attention must be paid to collecting and organizing relevant information in daily maintenance work. Information on electrical, electronic, mechanical spare parts, oil circuits, electromagnetic valve bodies, etc. For example, if there is an opportunity in the electrical field, it is necessary to measure the circuit schematic diagram, the schematic diagram of the electronic board and the actual wiring diagram, measure the corresponding components of the wiring terminals, and provide accurate detection points for fault diagnosis and analysis during maintenance. Measure the specific parameters of its detection points.

When necessary, it is also necessary to make your own power supply, simulate input and output signals, conduct simulation testing or calibration, in order to grasp and obtain first-hand maintenance data. This is also true for oil circuit maintenance at various work points, and comprehensive calibration and maintenance must be carried out according to the characteristics of the oil circuit and oil pressure solenoid valve. If there is an opportunity, it is necessary to regularly disassemble, clean, inspect, and install the solenoid valve. These treatments can cause a lot of trouble, but they are crucial.

Maintenance work must master and organize maintenance methods and judgment program diagrams that are in line with principles and logical systems. In combination with daily maintenance work, relevant information on injection molding machines should be collected. If faults occur, various methods such as step-by-step inspection, simulation inspection, voltage testing, on/off testing, and circuit board replacement should be used for handling. After repair, the working point needs to be readjusted, recalibrated, and subjected to a load test to ensure that the equipment operates within the parameter range listed in the operating manual.