What are the classifications of hydraulic system leakage of injection molding machines?

Leakage is a common fault phenomenon in injection molding machines, mainly due to the pressure difference generated when the liquid flows in the hydraulic components and pipelines, and the existence of gaps between components. In addition, harsh working conditions will also have a certain impact on the sealing of the injection molding machine.

Once the hydraulic system leaks, it will cause the system pressure to fail to build up. The leakage of hydraulic oil will also cause environmental pollution, affect production and even produce unpredictable serious consequences. The following is a brief talk about the causes and countermeasures of 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 the 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, the connection of each pipe joint, etc. 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, and internal leakage refers to the existence of pressure difference between high and low pressure sides and the failure of seals. Make the hydraulic oil flow from the high pressure side to the low pressure side in the system.