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What is the injection molding machine hydraulic system working principle?

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What is the injection molding machine hydraulic system working principle?
The hydraulic system of the injection molding machine uses hydraulic oil as the working medium. The mechanical energy of the prime mover is converted into the pressure energy of the hydraulic oil through the power element (oil pump), and then the pressure energy is converted through the control element and then the actuator (cylinder or oil motor) .It is mechanical energy that drives the load to achieve linear or rotary motion, and through the remote control of the control element and the adjustment of the flow rate, the force and speed of the actuator are adjusted.

What are the advantages of the injection molding machine hydraulic system?
The hydraulic transmission system has the following extremely obvious advantages:
1. From the structural point of view, the output power per unit weight and the output power per unit size of the hydraulic transmission system are overwhelming among the four types of transmission modes, with a large moment-to-inertia ratio. Under the condition of transmitting the same power, hydraulic transmission The device has small size, light weight, small inertia, compact structure and flexible layout.
2. From the perspective of working performance, the speed, torque, and power of the hydraulic transmission system can be adjusted steplessly, with fast action response, quick reversing and speed change, wide speed adjustment range, and the speed adjustment range can reach 100:1 to 2000 : 1; The action is fast, the control and adjustment are relatively simple, the operation is relatively convenient, labor-saving, it is convenient to cooperate with the electrical control, and the connection with the CPU (computer) is convenient to realize automation.

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3. From the perspective of use and maintenance, hydraulic transmission system components have good self-lubrication, easy to achieve overload protection and pressure retention, safe and reliable; components are easy to achieve serialization, standardization, and generalization. All equipment using hydraulic technology is safe and reliable.
4. From the perspective of economic cost: hydraulic technology has strong plasticity and variability, which can increase the flexibility of flexible production, and it is easy to change and adjust the production process. The manufacturing cost of hydraulic components is relatively low, and the adaptability is relatively low. Strong. The combination of hydraulic pressure and microcomputer control and other new technologies to form a "mechanical-electric-hydraulic-optical" integration has become the trend of world development, which is convenient for digitalization.

What are the disadvantages of the injection molding machine hydraulic system?
1. The hydraulic transmission system inevitably leaks due to the relative moving surface, and the oil is not absolutely incompressible. In addition to the elastic deformation of the oil pipe, the hydraulic transmission cannot obtain a strict transmission ratio, so it cannot be used for processing threaded gears, etc. In the inline drive chain of the machine tool.
2. There are edge loss, local loss and leakage loss during the oil flow in the hydraulic transmission system, and the transmission efficiency is low, which is not suitable for long-distance transmission.
3. Under high temperature and low temperature conditions, it is difficult to adopt hydraulic transmission system.

The above are some introductions about the injection molding machine hydraulic system, please leave a message online for questions about the injection molding machine

 

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