Analyze The Maintenance Link of Injection Molding Machine in Plastic Machinery

Mar. 09, 2021

Here is the Injection Molding Machine Supplier introducing the maintenance problem of the injection molding machine, I hope it will be helpful to everyone

Injection molding machines are commonly used mechanical equipment in the plastics machinery industry. It is the main molding equipment for making thermoplastic or thermosetting plastics into various shapes of plastic products using plastic molding dies. Divided into vertical, horizontal and all-electric. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it shoot out and fill the mold cavity.


Injection Molding Machine

Injection Molding Machine

Maintenance workers must first understand and master the contents of the operating instructions of the plastic machinery injection molding machine, be familiar with and master the mechanical components, circuits and oil circuits of the injection molding machine, and understand the working process of the machinery, circuits and oil circuits during the normal operation of the injection molding machine. Understand and master the inspection and maintenance methods of electrical components and hydraulic components. Know the normal working state and the abnormal working state to avoid time-consuming misjudgment and wrong disassembly.

Maintenance work must understand the operation method of the equipment and have some basic knowledge of injection molding, and be able to use the injection molding machine correctly. If you don’t know how to operate an injection molding machine, the maintenance work is very difficult, and it may be unreliable to judge the fault. The circuit boards and electrical components in the injection molding machine are affected by factors such as high temperature, environment and time for a long time, the operating point of the components is shifted, and the aging degree of the components is within the normal range. Therefore, debugging an injection molding machine is also one of the essential basic skills in maintenance work.

Understanding the working procedures of the Injection Molding Machine, debugging the electronic circuit and hydraulic circuit of the injection molding machine are very important links.

To be accurate, reliable and timely in maintenance work, it is necessary to study and master the contents of the operating instructions of various types of injection molding machines. In the general maintenance process, the maintenance idea is usually the action of circuits, oil circuits and mechanical parts. The adjustment work is carried out in reverse, such as mechanical action and clamping pressure, etc., you can find the oil circuit and circuit, if the circuit output is normal, adjust the oil circuit valve. If the oil circuit works normally, adjust the circuit electronic board. Of course, the final coordination, but the relationship between the three is interdependent and mutual control.

Correct use of instruments and meters, adjustment of detection circuits, inspection and repair of oil circuits, and adjustment of the position and actions of mechanical parts are important means of judging failures.

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 sorting out all relevant information in daily maintenance work. Such as electrical, electronic, mechanical spare parts, oil circuit, solenoid valve body, etc.

Measure the specific parameters of its detection point. When necessary, you must also make your own power supply, simulate input and output signals, and perform simulation tests or adjustments to master and obtain first-hand maintenance data. For example, the same is true for oil circuit maintenance at all levels of work points, which must be based on the oil circuit. And the characteristics of the hydraulic solenoid valve are comprehensively adjusted and maintained.

Have the opportunity to frequently disassemble, clean, inspect, and install the solenoid valve. These treatments will cause a lot of trouble, but they are crucial.

The maintenance work must be mastered and sorted out in accordance with the principle and logic system failure maintenance methods and judgment program diagrams, combined with the actual maintenance work on weekdays, collect the relevant information of the injection molding machine, such as troubleshooting, the methods include step-by-step inspection method, simulation inspection method, Various methods such as voltage test method, continuity test method, circuit board substitution method, etc.

After repairing, it is necessary to re-adjust the operating point, re-adjust, and carry out a load test to make the equipment work within the parameter range of the data listed in the operation manual.

The company provides Automatic Injection Molding Machines and vertical injection molding machines, please feel free to contact us if necessary

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