Why Choose the Target Hydraulic Power Pack for Injection Molding？
- The design, production, assembly, and testing of each hydraulic power pack are carried out in our own factory.
- Each hydraulic power pack for injection molding undergoes 72 hours of continuous load testing, high and low pressure cycling, and other tests.
- Adopting modular components and standardized interfaces for easy maintenance.
- We have our own CNC machining center to produce hydraulic manifold blocks.
- Support OEM/ODM services, quickly respond to your procurement and after-sales needs.
Your Reliable Hydraulic Power Pack Partner for Precision Injection Molding
As a professional hydraulic power pack manufacturer, we can provide high-performance hydraulic power packs for injection molding. Our power pack is strictly controlled from design, production, assembly to testing in our own factory, ensuring that each set of equipment can provide stable pressure and flow output under continuous high-load conditions.
At the same time, we have a technical team composed of experienced hydraulic engineers to provide you with one-on-one service. From the scheme design, installation and commissioning to fault diagnosis, our factory technicians will follow up throughout the entire process.
220V/380V universal industrial power supply, suitable for fixed installation injection molding systems.
Used for light load or testing injection molding systems.
It can be quickly integrated into the on-site injection molding auxiliary equipment.
Meet the demand for high cycle injection molding machines.
Features of the Hydraulic Power Pack for Injection Molding
The large capacity heat exchanger maintains the hydraulic oil at the ideal temperature.
High precision filtration system keeps the oil clean and protects hydraulic components.
The shock absorber bracket and soundproof cover reduce the vibration and noise.
Pressure gauges and sensors allow you to monitor system status at any time.
Quick Response Ability
Our hydraulic power pack for injection molding adopts optimized proportional pressure control, which can achieve millisecond level switching of processes such as mold closing, injection, and pressure holding. Through precision machining of manifolds and high response solenoid valves, the system can stably maintain the set pressure with minimal fluctuation range. This improves the accuracy and quality of injection molded parts, making it suitable for high-precision mold production that requires strict pressure stability.
Servo Energy Saving System
By integrating permanent magnet servo motors with high-performance internal gear pumps, our hydraulic power pack for injection molding achieves closed-loop control of on-demand oil supply. During the cooling and standby phases, the system’s energy consumption can be reduced by 30% to 70%. Furthermore, this servo technology reduces the heat generation of hydraulic oil and extends the lifespan of seals and hydraulic oil. It also reduces the burden on the cooling system and lowers your long-term operating costs.
High-Precision Manifolds
This hydraulic power pack for injection molding uses high-density forged steel or high-strength ductile iron manifolds, which are formed in one piece by our five-axis machining center. This minimizes the number of pipeline connection points and eliminates the risk of leakage. The internal flow channel of the minifold has been optimized through fluid dynamics, which reduces local pressure drop and vibration effectively. Even under 24/7 high-intensity injection molding conditions, our power pack can still maintain high reliability, keeping the continuous output of the production line.
Applications of the Hydraulic Power Pack for Injection Molding
When manufacturing automotive exterior components such as bumpers and spoilers, the hydraulic system needs to have clamping force compensation and long-term pressure stability. Through the coordinated operation of the hydraulic piston pump and the proportional pressure valve, the hydraulic power pack for injection molding can effectively prevent the formation of shrinkage cavities or bubble defects in thick-walled parts during the cooling process.
Its customized circuit enables multiple ejector mechanisms to operate simultaneously, which shortens the molding cycle of complex vehicle body parts and improves the quality of the finished products.
The production of medical devices has high requirements for the output accuracy and cleanliness of the hydraulic system. The molding of precision medical devices has an extremely low tolerance for hydraulic pressure fluctuations, and the system must have high response accuracy. By integrating high-performance servo drives and multi-stage filtration protection, this hydraulic power pack achieves microsecond-level pressure adjustment and makes the melt pressure constant during the injection process.
Its low noise and leak-proof design complies with the operation standards of the medical environment. It can support high cleanliness and zero-defect automated injection molding operations.
The molding processes for thin-walled products, such as the back panels of mobile phones and the frames of laptops, require the system to have a fast response speed and thermal stability.
Our servo-driven hydraulic power pack can adjust the flow output according to real-time requirements, which controls the oil temperature rise while meeting high-frequency injection actions. This power distribution can reduce the heat loss of hydraulic components and maintain the consistency of operating parameters in continuous production.
When the molds involve complex mold functions such as core pulling, unscrewing, and auxiliary slides, the built-in hydraulic interfaces of the injection molding machines often fail to meet the requirements. The injection hydraulic power pack can serve as an auxiliary energy source, providing independent pressure and flow for complex mold structures without occupying the main hydraulic circuit of the injection molding machine.
Small injection molding machines, desktop equipment, and laboratory injection molding machines often do not have enough space inside to accommodate hydraulic systems. The external hydraulic power pack for injection molding can meet the requirements.
It can connect devices through standard interfaces. It can also provide stable hydraulic pressure and continuous flow output for these devices, avoiding complex oil circuit modifications inside the machinery.
Some Reference Configurations
| Supply Voltage | DC 12V/24V/48V/72V, AC 220V/380V/400V, or customized |
| Motor Power | ~30 kW, or customized |
| System Pressure | ~37.5 MPa, or customized |
| Displacement | ~200 L/min, or customized |
| Fuel Tank Capacity | ~400 L, or customized |
Yes. We will adjust the material of the equipment according to the type of hydraulic medium you use. For fire-resistant fluids, we will use fluororubber material seals and choose a chemical resistant coating for the interior of the hydraulic tank. This can prevent seal swelling or coating detachment due to incompatible media, keeping stable operation of the power pack in specific production lines.
This hydraulic power pack for injection molding uses SAE standard flanges or O-ring face seals at pump ports and main manifold interfaces instead of traditional NPT threads. This connection method utilizes O-rings to achieve axial hard sealing, which can withstand frequent pressure fluctuations and mechanical vibrations during the injection molding process. This structure reduces the risk of oil leakage caused by loose threads or stress fatigue.
We have integrated high-performance accumulators to store energy during the idle phase of the cycle. When the system enters the injection process, the accumulator can instantly release a large volume of hydraulic oil to assist the main pump in operating.
The use of accumulators can shorten the filling time of molten plastic in the mold cavity. It is also possible to use a motor with lower power to achieve the same action.
The injection molding process typically involves high-pressure cycling above 21 MPa, accompanied by frequent pressure pulses. Compared to cast aluminum, high-strength forged steel materials have higher density and fatigue resistance, which can effectively eliminate small pores that may occur during the casting process.
This makes the manifold will not experience internal cracking or channel deformation caused by high-pressure oil flushing under long-term alternating loads, thereby guaranteeing the structural safety of the hydraulic system under high pressure.
Our hydraulic power pack can be equipped with intelligent sensors with IO Link or RS 485 communication interfaces according to your requirements. Through these sensors, the PLC control system of the injection molding machine can obtain real-time data on pressure, temperature, and filter blockage status. This can improve the accuracy of action control and provide early warnings based on parameter trends before failures occur.
What is the Hydraulic Power Pack for Injection Molding?
In hydraulic injection molding machine systems, many actions such as mold closing, injection, pressure holding, and ejection all rely on the hydraulic system to provide strong and stable power. The hydraulic power pack for injection molding is an independent power unit specifically designed to provide hydraulic power for injection molding machines.
It is mainly composed of a motor, a hydraulic pump, an oil tank, and related control components. It can convert mechanical energy into hydraulic energy, and then transmit it through the oil circuit to each actuating component of the injection molding machine to complete the injection process.
Factors to be Considered when Choosing A Hydraulic Power Pack for Injection Molding
System Pressure and Flow Rate
Pressure determines the driving force for actions such as mold closing and injection. The hydraulic flow rate affects the speed of the action execution. You need to select the power pack based on the tonnage of the injection molding machine and the production conditions to avoid slow movement caused by insufficient power. At the same time, you need to leave a safety margin of 10% to 20%.
Working Frequency
Injection molding production is mostly a 24 hour continuous operation or high-frequency cycle production. For high cycle injection molding production lines, you need to prioritize choosing heavy-duty hydraulic power packs. This type of injection molding hydraulic power pack has better structural stability and can adapt to long-term continuous operation conditions.
Environmental Temperature and Heat Dissipation
During the operation of the hydraulic power pack for injection molding, a large amount of heat is generated due to energy conversion. Excessive oil temperature can reduce the viscosity of the oil and affect the efficiency of system operation. You need to focus on the cooling configuration of the power pack.
For normal operating conditions, you can choose the model with a cooling fan. If the production site has high temperatures and poor ventilation conditions, you should choose a power pack equipped with efficient heat management devices such as heat exchangers to keep the oil temperature within the appropriate operating range.
Installation Space and Layout Method
The installation of the power unit needs to be compatible with the layout of the injection molding machine. You should select the appropriate equipment based on the size of the actual installation area. At the same time, you need to confirm the layout of the power pack. Based on the direction of the on-site pipelines and the installation locations, select the horizontal or vertical device.
Internal Components
The hydraulic power pack for injection molding consists of multiple components such as the hydraulic pump, motor, and control valve group. The hydraulic piston pumps are suitable for high-pressure and high-precision injection molding applications. The hydraulic gear pumps are more suitable for medium-low pressure batch production.
The hydraulic power unit equipped with servo motors and variable displacement pumps can automatically adjust the power and flow according to the load changes in different processes, thereby reducing energy consumption during long-term production.
Manufacturing Materials
The manufacturing materials and protective processes of the hydraulic power pack determine its corrosion and wear resistance under injection molding conditions. The environment in the injection molding workshop usually has conditions such as high temperature and excessive dust. You need to select materials that are resistant to high temperatures and corrosion to manufacture the components, pipelines and casing.
Maintaining Convenience
You can prioritize the hydraulic power pack for injection molding, which offers more convenient operations such as filter replacement, oil inspection, and pipeline maintenance. This can simplify the daily maintenance and troubleshooting process and shorten the maintenance operation time.
At the same time, you also need to pay attention to the universality of the components of the power pack. Universal components can be quickly purchased and replaced, avoiding the extension of the maintenance period due to untimely replacement of accessories.