Leakage Reasons and Maintenance of Injection Molding Machine Hydraulic System
Introduction
Injection molding machine is a kind of special equipment which uses plastic molding procedure to manufacture plastic products. It occupies a certain position in the plastic processing machinery industry. With the development and progress of modern industrial technology, injection molding machines have been widely used and made a great contribution to the development of plastic industry. The hydraulic system of injection molding machine is an important system in the plastic injection molding process. It is responsible for the injection process, plastic mold clamp opening and closing, ejection and other important processes. Therefore, problems that may occur in the hydraulic system also directly affect the production efficiency and the quality of processed products. This article discusses the causes, prevention and maintenance of leakage in the hydraulic system of injection molding machine.
Causes of Leakage in Injection Molding Machine Hydraulic System
1. Excessive temperature. Injection molding machine itself generates a lot of heat during work, and the hydraulic oil used in hydraulic system also needs to be cooled. The hydraulic system of injection molding machine has a cooling system to make the hydraulic system keep working in normal temperature range. However, if the cooling system fails or doesnt work normally, the temperature of hydraulic oil will be too high, and this temperature is too high for the seals of hydraulic components, thus damaging the seals and causing oil leakage.
2. Damage in sealing parts. All the components of a hydraulic system are sealed by seal rings. These seal rings are used to prevent oil from leaking from different parts of the hydraulic system. Over time, these seal rings will be damaged and worn. Once these seal rings are damaged, oil from the system will begin to leak out. Therefore, it is important to check and replace the seal rings regularly.
3. Improper installation. Improper installation may lead to the loosening of connection parts. After the connection parts are loosened, oil will flow out of the connection parts, and then oil leakage will occur. Therefore, during the installation of the hydraulic system, it is important to check the components carefully to ensure proper and reliable connection.
Preventive Measures of Leakage in Injection Molding Machine Hydraulic System
1. Check the hydraulic oil regularly and replace it when necessary. The hydraulic oil used by mesh hydraulic system is different from the lubricating oil used by common equipment. Hydraulic oil must conform to the national standard and the requirements of the hydraulic system of injection molding machine. In addition, regular check of the hydraulic oil must be done. When the oil color turns dark and impurities accumulate in the oil, the hydraulic oil should be replaced.
2. Check the seal rings regularly. Seal rings are important components of the hydraulic system of injection molding machine. They are used to prevent oil leakage by sealing different parts of the system. Therefore, it is important to check the seal rings regularly, and the seal rings should be replaced when they are worn or damaged.
3. Do not overfill the oil. Generally, the oil level should be kept at the center of the window, not too full or too low, so as to ensure the normal operation of the hydraulic system.
4. Keep the oil clean. Cleanness is an important factor to ensure the normal operation of the hydraulic system. During use, the impurities contained in the oil will increase, and the surface of the components will be corroded. The hydraulic system of injection molding machine must be equipped with oil filters to ensure the cleanness of hydraulic oil.
Maintenance of Injection Molding Machine Hydraulic System
1. Regular inspection and maintenance. Regular inspection of different parts of the hydraulic system of injection molding machine is very important to ensure the normal operation of the system. During inspection, it is necessary to observe whether the components of the system are aging, whether the oil pipe connection is leaking, whether the suction filter is clogged and other conditions. In addition, the pressure of the system should be checked to avoid failure caused by excessive pressure.
2. Clean regularly. The working environment of injection molding machine is complicated, so a lot of dirt will enter the hydraulic system. If the dirt is not cleaned up in time, it may cause oil blocking, which will affect the normal operation of the system. Therefore, it is necessary to clean the dirt in the system regularly.
3. Replace components in time. The components of injection molding machine need to be replaced constantly. For example, the sealing parts should be replaced regularly to prevent oil leakage. Replace the oil filter and valve core regularly to ensure the operation accuracy of the system.
Conclusion
The hydraulic system of injection molding machine is the core part of the injection molding machine. Any problems in the hydraulic system will affect the production efficiency and even the quality of the products. This article has discussed the causes, preventive measures and maintenance of leakage in the hydraulic system of injection molding machine. It is believed that after understanding this article, we can better control the hydraulic system of injection molding machine and improve the production efficiency and product quality.
