Injection molding machine repair preparation

The core of maintenance work is the judgment of faults and the handling of faults. It involves a wide range of knowledge, a large degree of complexity, and a certain degree of depth (such as comprehensive professional knowledge level). It is necessary to have basic knowledge of mechanical equipment maintenance, basic knowledge of hydraulic maintenance, and basic knowledge of electrical maintenance. In fact, the maintenance of the injection molding machine is difficult, but it is a process of continuous learning and progress. As long as the basic working principle of the injection molding machine is mastered, and the basic working methods are mastered, regardless of the various models, the ever-changing ones can explore a set of maintenance. Work procedures to ensure the normal operation of the injection molding machine.

Maintenance workers must first understand and master the contents of the operating instructions of the injection molding machine, be familiar with and master the mechanical parts, circuits, and oil paths of the injection molding machine, and understand the working processes of the machine, circuit, and oil circuit during the normal operation of the injection molding machine. Master the inspection and maintenance of electrical components and hydraulic components. Clear normal working conditions and abnormal working conditions to avoid time-consuming misjudgments and mis-disassembly. Maintenance work must understand the operation of the equipment and have some basic knowledge of injection molding, and will use the injection molding machine correctly. If you do not know how to operate the injection molding machine, overhaul work is very difficult, and judging the failure may not be reliable. In the injection molding machine, the circuit boards and electrical components have long been affected by factors such as high temperature, environment, and time. The device operating point shifts and the component aging degree are all within the normal range. Therefore, debugging injection molding machines is also one of the essential basic functions in maintenance work. Understanding the working procedure of the injection molding machine and debugging the electronic circuit and hydraulic circuit of the injection molding machine are very important links.

The maintenance work must be accurate, reliable and timely, and the contents of the instruction manuals of various types of injection molding machines must be studied and mastered. In the general maintenance process, the maintenance ideas are usually circuits, oil circuits, and mechanical components. The adjustment work is reversed, such as mechanical action and clamping pressure, etc., can find the oil circuit and circuit, if the circuit output is normal, then adjust the oil valve. If the oil circuit works normally, adjust the circuit board. Of course, the final adjustment, but the three relationships depend on each other and control each other. The correct use of instrumentation, calibration of the inspection circuit, inspection of the oil circuit, and adjustment of the position and movement of the mechanical part is an important means of determining faults. General injection molding machine manufacturers only give the electrical block diagram of the equipment, the block diagram of the oil circuit and the main part of the machine, which is not enough for maintenance work. Must pay attention to daily maintenance work, collect, sort out relevant information in all aspects. Such as electrical, electronic, mechanical spare parts, oil lines, solenoid valve and other aspects of information. For example, if there is an opportunity in electrical aspects, it is necessary to map the circuit schematic, map the schematic of the electronic board and the actual wiring diagram, and measure the corresponding information of the corresponding devices of the connection terminal so as to provide accurate judgment and analysis of faults in maintenance. Checkpoint where to go. Measured the specific parameters of the detection point. When necessary, it is necessary to make its own power supply, simulate the input and output signals, perform simulation tests or adjustments, and master and obtain first-hand maintenance data, such as the maintenance of oil lines at various working points. And the characteristics of hydraulic solenoid valve comprehensive adjustment and maintenance. Have the opportunity to frequently disassemble, clean, inspect, and install solenoid valves. This process will cause a lot of trouble, but it is crucial. Source of information: China Plastics Trading Network must master and collate maintenance principles, logical system fault repair methods and judgment procedures, in conjunction with the actual day-to-day maintenance work, collect injection molding machine related information, such as failure to deal with, its method has gradually Inspection methods, analog inspection methods, voltage test methods, continuity test methods, circuit board replacement methods, and other methods. After repairs are made, the work points must be readjusted and re-adjusted to carry a load test to make the equipment work within the parameters of the data listed in the operating instructions.