How to deal with the leakage of the hydraulic system of the injection molding machine?

Leakage is a common failure phenomenon of injection molding machines, mainly due to the pressure difference generated when the liquid flows in the hydraulic components and pipelines and the gaps in each component cause leakage. In addition, harsh working conditions will also have a certain impact on the sealing of the injection molding machine. Once the hydraulic system leaks, the system pressure will not be able to build up, and the hydraulic oil leakage will also cause environmental pollution, affect production and even produce unpredictable serious consequences. Let's briefly talk about the reasons and countermeasures of leakage for some factors that affect the leakage of the hydraulic system of the injection molding machine. Classification of leaks There are two main types of leakage in the hydraulic system of an injection molding machine. The leakage at the fixed seal and the leakage at the moving seal. The leakage at the fixed seal mainly includes the bottom of the cylinder and the connection of each pipe joint. The moving seal mainly includes the piston rod of the cylinder, Multi-way valve stem and other parts. From the oil leakage, it can also be divided into external leakage and internal leakage. External leakage mainly refers to the leakage of hydraulic oil from the system to the environment. Internal leakage refers to the existence of the pressure difference between the high and low pressure sides and the failure of the seal. Make the hydraulic oil flow from the high pressure side to the low pressure side inside the system. The main prevention and control measures for leakage The factors that cause the leakage of the hydraulic system of the injection molding machine are the result of comprehensive influences from many aspects. With the existing technology and materials, it is difficult to fundamentally eliminate the leakage of the hydraulic system of the injection molding machine. Only from the above factors affecting the leakage of the hydraulic system, reasonable measures should be taken to minimize the leakage of the hydraulic system. The design and processing of the seal groove should be fully considered in the design and processing links. In addition, the selection of seals is also very important. If the influencing factors of leakage are not fully considered at the beginning, it will cause immeasurable losses in future production. Choose the correct assembly and repair methods, and learn from past experience. For example, use special tools as much as possible in the assembly of the seal ring, and apply some grease on the seal ring. In the pollution control of hydraulic oil, it is necessary to start from the source of pollution, strengthen the control of pollution sources, and take effective filtering measures and regular oil quality inspections. In order to effectively cut off the pollution of the hydraulic cylinder by external factors (water, dust, particles, etc.), some protective measures can be added. In short, the prevention and control of leakage must be fully implemented, and comprehensive consideration can be achieved to be effective.