Key design points of the oil circuit block for Lianlai hydraulic hot runner

In modern injection molding and high-precision hydraulic systems, hot runner oil circuit blocks are key components that ensure the stable and efficient operation of the system. It not only undertakes the distribution and flow control tasks of the hydraulic oil circuit, but also relates to the response speed, accuracy and overall service life of the system. As a leading domestic manufacturer of hydraulic products, Kunshan Lianlai Hydraulic Machinery Co., Ltd. has accumulated rich experience in the design and application of hot runner oil circuit blocks. This article will deeply interpret the design key points of the hot runner oil circuit block from five aspects: design concept, key parameters, structural optimization, material selection and application cases, providing a reference for hydraulic system engineering.

I. Basic Functions of the Hot Runner Oil Circuit Block

The hot runner oil circuit block is a core module in the hydraulic system, and its main functions include:

Concentration and optimization of hydraulic oil circuits

Concentrating multiple hydraulic circuits in one module can achieve a reasonable distribution of flow and pressure, reduce the number of pipelines, and enhance the compactness of the system.

Flow and pressure control

Through a rationally designed oil circuit and valve position layout, precise flow and pressure control of the hydraulic system is achieved, meeting the requirements for efficient operation of the equipment.

System security guarantee

By integrating functional components such as relief valves and safety valves, it ensures that the system can automatically protect itself in case of overload or abnormal conditions.

Reduce maintenance costs

The modular design reduces pipeline connection points, lowers the risk of leakage, and makes maintenance and troubleshooting more convenient.

Ii. The Design Concept of Kunshan Lianlai Hydraulic Machinery Co., LTD

Kunshan Lianlai Hydraulic Machinery Co., Ltd. adheres to the following core concepts in the design of hot runner oil circuit blocks:

Customer demand-oriented

According to the working conditions and load characteristics of different industrial equipment, tailor-made oil circuit block solutions are provided to ensure good system performance.

Equal emphasis is placed on precision and reliability

Through high-precision processing and strict quality control, ensure smooth oil passage and accurate valve position matching, thereby enhancing the stability and lifespan of the system.

Modularization and integration

Integrate multiple valve groups and functional modules into a single oil circuit block to achieve space savings and system simplification.

Intelligent reserved interface

Reserve interfaces for future electronic control and intelligent upgrades to facilitate the integration of sensors and PLC control systems and achieve closed-loop control.

Iii. Key Design Parameters of Hot Runner Oil Circuit Blocks

When designing the hot runner oil circuit block, the following parameters are of vital importance:

Traffic demand

Calculate the flow requirement based on the equipment power, the number of hydraulic cylinders and the action frequency to ensure that the oil circuit block can provide sufficient oil volume and avoid system response lag.

Work pressure

The oil circuit block needs to withstand the working pressure and impact pressure of the system. When designing, a safety margin should be reserved to ensure long-term stable operation.

Valve position layout

Arrange the valve positions reasonably according to the functions of the valve group to reduce the bending of the oil circuit and pressure loss, and improve the fluid efficiency.

Channel size and smoothness

The internal oil passage must ensure dimensional accuracy and surface finish, reduce fluid friction and energy loss, and improve response speed.

Temperature control

In high-temperature working environments, the oil circuit block should have a good heat dissipation design to prevent the oil temperature from being too high and affecting the hydraulic performance.

Iv. Structural Optimization of the Hot Runner Oil Circuit Block

Compact layout design

Lianlai Hydraulic, through a rational layout, closely integrates multiple circuits and functional modules, reducing installation space and enhancing the overall compactness of the system.

Reduce pipeline bends

The oil passage should be as short and straight as possible, with fewer sharp bends to reduce pressure drop and vortex, ensuring the smooth flow of hydraulic oil.

Modular design

Support standardized valve block module combination, which is convenient for equipment upgrade and maintenance, and at the same time reduces production costs.

Multi-functional integration

Relief valves, check valves, throttle valves, directional control valves, etc. are integrated in the oil circuit block to achieve multi-functional oil circuit control and simplify system design.

Convenient maintenance design

Reserve detection, exhaust and maintenance interfaces in the design to make system maintenance more convenient and efficient.

V. Material Selection and Manufacturing Process

The performance of hot runner oil circuit blocks is closely related to the material and manufacturing process:

Material selection

High-strength steel or aluminum alloy is often used to manufacture oil circuit blocks, taking into account both pressure-bearing capacity and weight control.

The surface is chrome-plated or hardened to enhance wear resistance and corrosion resistance.

Machining accuracy

High-precision CNC machining ensures consistent dimensions of the oil circuit channels, reducing leakage and pressure drop.

The valve holes are precisely matched with the valve group to enhance control accuracy and system response speed.

Heat treatment process

Heat treatment or hardening is carried out on the pressure-bearing parts to enhance their compressive resistance and durability.

Ensure the stable operation of the oil circuit block in high-temperature environments.

Surface treatment and coating

The internal oil circuit surface is smooth, reducing friction and turbulence.

The external coating is anti-corrosive and anti-oxidation, extending the service life.

Vi. Practical Application Cases of Hot Runner Oil Circuit Blocks

1. Injection molding equipment

Precisely control the clamping force and injection speed to ensure the quality of plastic parts;

Stable operation under high-temperature conditions, reducing energy consumption and oil temperature fluctuations;

It is convenient to maintain and replace the valve group, improving production efficiency.

2. Construction machinery

The coordination of hydraulic cylinder movements has been enhanced, and the operational efficiency has been improved.

Ensure the safe operation of the system under high-pressure conditions;

The compact design saves space and facilitates equipment installation and commissioning.

3. Metallurgical machinery

Precisely control the pressure of the rolling mill to ensure processing accuracy;

The shearing machine operates smoothly, reducing wear.

Extend the overall service life of the hydraulic system and reduce maintenance costs.

Vii. Future Design Trends

With the development of industrial automation and intelligent manufacturing, the design of hot runner oil circuit blocks shows the following trends:

Intelligent design

Integrate sensors to achieve real-time monitoring of oil temperature, pressure and flow rate;

Support PLC and remote control to enhance the level of system automation.

Energy conservation and environmental protection

Optimize the oil circuit design to reduce energy consumption;

Enhance thermal efficiency and reduce environmental impact.

Modularization and standardization

Supports quick assembly and replacement, facilitating equipment upgrades;

Reduce production costs and enhance applicability.

Application of high durability materials

By adopting new alloy materials and advanced surface treatment technologies, the wear resistance and service life are enhanced.

Hot runner oil circuit blocks are indispensable core components in modern hydraulic systems, and their design quality directly affects the stability, efficiency and service life of the equipment. Kunshan Lianlai Hydraulic Machinery Co., LTD., with its rich design experience, high-precision manufacturing processes and strict quality control, provides customers with high-performance, reliable and intelligent hot runner oil circuit block solutions. Through scientific design concepts, optimization of key parameters, structural integration and material selection, Lianlai Hydraulic continuously promotes the efficient application of hydraulic systems in industries such as injection molding machinery, construction machinery and metallurgical equipment, creating greater value for customers.