Injection Molding Machine Lubricating Oil Pumps Types include servo oil pump, gear oil pump,multi-pump mode oil pump and others.
The types of oil pumps in the lubrication system of injection molding machines mainly include gear pumps, plunger pumps, variable displacement pumps, electric plunger pumps, automatic lubrication pumps and manual lubrication pumps. Each pump has its specific application scenarios and advantages and disadvantages. Choosing the right pump type requires comprehensive consideration of factors such as the specific needs of the equipment, the operating environment, and maintenance costs.
There are various types of oil pumps used in the lubrication system of injection molding machines, ranging from manual to automatic, from quantitative to variable. Choosing the right type of oil pump requires comprehensive consideration of factors such as specific equipment requirements, the number of lubrication points, the nature of the lubricating medium, and energy-saving and environmental protection requirements.
By properly selecting and maintaining the oil pump, you can ensure efficient and stable operation of the injection molding machine, extend the life of the equipment, and reduce maintenance costs.
The types of lubricating oil pumps for injection molding machines has mainly as follows:
Types of Injection Molding Machine Lubricating 0il Pumps: Servo oil pump
Servo oil pump is a common type of oil pump in injection molding machines. Its characteristic is that the output pressure and flow of the oil pump are adjusted by the servo control system to meet the operation requirements of the injection molding machine. The servo oil pump has the characteristics of high efficiency and energy saving. For example, in some cases, its energy consumption is only 50% of that of ordinary oil pumps.
Axial piston pump
This pump generates oil pressure by reciprocating the rotating piston in the cylinder. It has the characteristics of high precision and high efficiency, and is suitable for occasions where precise control of oil pressure is required.
Gear pump
The gear pump delivers oil by rotating two meshing gears in the housing. It has a simple structure and low cost, but relatively low efficiency, and is suitable for occasions where precision is not required.
Vane pump
The vane pump delivers oil by sliding the vanes in the rotor slots. It has good flow regulation ability and is suitable for medium precision occasions.
Variable pump
The variable pump can automatically adjust the output flow according to the load demand, thereby achieving energy saving. This pump is usually used in conjunction with a servo motor to achieve more efficient energy utilization.
Application scenarios and advantages
- Energy saving: The servo oil pump directly controls the flow and pressure through the servo motor, avoiding the overflow loss in the traditional hydraulic system and significantly reducing energy consumption.
- High-precision control: The dynamic response characteristics of the servo oil pump are better than those of the traditional variable pump, which is suitable for the high-speed injection and complex process requirements of the injection molding machine.
- Flexibility: The servo oil pump can dynamically adjust the output according to the load demand to adapt to the pressure and flow changes of the injection molding machine under different working conditions
Types of Injection Molding Machine Lubricating 0il Pumps: Gear oil pump
Gear oil pump is a common type of oil pump for injection molding machines, which is usually used to provide a stable supply of lubricating oil. Gear oil pump has the characteristics of simple structure, easy maintenance, and can adapt to a variety of lubrication needs.
External gear pump
The teeth of the two gears mesh with each other, and the active gear drives the driven gear to rotate, thus forming an oil path for suction and discharge. This structure is simple and reliable, and is widely used in equipment such as engines and injection molding machines.
Internal gear pump
One gear (internal gear) meshes with another gear (external gear). The external gear has fewer teeth than the internal gear, so there will be a certain amount of space loss when rotating, resulting in lower efficiency. However, this design can reduce the number of components, manufacturing costs and space requirements.
Application of gear oil pump in injection molding machine
In injection molding machines, gear oil pumps are mainly used in lubrication systems to ensure that the various moving parts of the machine (such as guide rails, sliders, gear boxes, etc.) are fully lubricated. The following are the specific applications of gear oil pumps in injection molding machines.
- Lubrication system: The gear oil pump sucks and pressurizes the lubricating oil from the oil tank and delivers it to the parts that need lubrication. In injection molding machines, the lubrication system usually includes components such as oil pumps, oil coolers, oil filters, and pressure regulating valves to ensure the cleanliness and stable supply of lubricating oil.
- Pressure regulation: Gear oil pumps are usually equipped with pressure regulating valves to prevent excessive oil pressure, thereby protecting other parts of the machine from damage.
- Automatic lubrication system: In modern injection molding machines, gear oil pumps are often used in combination with automatic lubrication systems to achieve precise control of lubrication points.
Maintenance and care of gear oil pumps
In order to ensure the long-term stable operation of gear oil pumps, regular maintenance and care are essential. The following are some common maintenance measures:
- Check the oil pressure: Check the oil pressure regularly to see if it meets the standard value to ensure the normal operation of the lubrication system.
- Clean the oil tank: Clean the oil tank regularly to prevent oil contamination and impurity accumulation.
- Replace the filter element: Replace the oil filter regularly to ensure the cleanliness of the lubricating oil.
- Check the seal: Check the seal of the oil pump regularly to prevent leakage and oil contamination.
Types of Injection Molding Machine Lubricating 0il Pumps: Multi-pump mode oil pump
Some injection molding machines use multi-pump mode, for example, 4 oil pumps work together, and achieve higher efficiency and flexibility through different combinations (such as the main pump with the slave pump or diversion control).
Control method of multi-pump mode
- Parameterized configuration:
Multi-pump mode requires parameter settings (such as P02 flow combination type) to select the operating mode (single pump, mixed, multi-pump, multi-mode, etc.), and supports the configuration of node number (P03) to achieve flexible control. - Servo drive and dual displacement pump control:
Multi-pump mode combines servo drive technology to optimize energy utilization and reduce energy consumption through pressure control (P control), flow control (Q control) and dual displacement pump control.
Typical application scenarios
- Hydraulic speed control system:
Pointed out that the multi-pump mode significantly reduces power loss in the hydraulic speed control system through dual pressure throttling, digital control throttling and other technologies, and is suitable for injection molding machines, extruders and other equipment. - Injection molding machine lubrication system:
Detailed description of the application of multi-pump mode in injection molding machines, including multi-pump mode, compound mode and multi-mode system diagrams, and improves lubrication efficiency through flow distribution and pressure regulation.
Manual lubrication pump
Manual lubrication pump is suitable for some small injection molding machines or specific scenarios, and realizes lubrication function through manual operation. This type of pump usually has lower output pressure and flow, suitable for light load lubrication needs.
Injection molding machines and blow molding machines
Injection molding machines and blow molding machines are equipped with manual lubrication pumps as standard, which are used for lubrication of injection units and clamping devices. They are easy to operate and maintenance-friendly.
General industrial equipment
For lubrication of components such as ball screws and guide rails, manual grease pumps are required for lubrication on a shift basis.
Small or dispersed lubrication points
Suitable for equipment with fewer lubrication points, such as small machine tools or temporary lubrication needs.
AC and DC lubricating oil pumps
According to the different driving methods, injection molding machine oil pumps can also be divided into AC lubricating oil pumps and DC lubricating oil pumps. AC lubricating oil pumps are usually driven by motors, while DC lubricating oil pumps are powered by batteries or DC power supplies.
AC lubricating oil pump
- AC pump is suitable for high-power, large flow requirements, such as large production lines.
- Application scenariosAC pumps are suitable for industrial equipment with high power requirements, such as large injection molding machines or production lines that need to run continuously for a long time. Its AC motor provides higher output power and stability, suitable for high-load environments.
DC lubricating oil pump
- DC pump: suitable for low-power, compact equipment, such as small injection molding machines.
- Application scenarios: DC pumps are often used in low-power, compact equipment, such as small injection molding machines or industrial machinery that requires low power operation. Its DC motor design is suitable for scenarios with limited space or sensitive to energy consumption.
Constant displacement rotary screw oil pump
This oil pump adopts a constant displacement design and realizes the delivery of lubricating oil by rotating the screw, ensuring that the lubricating oil flows at a constant speed and in a uniform manner.
Lever transmission oil barrel pump
This oil pump is suitable for high-viscosity lubricants (such as gear oil) and achieves high-efficiency lubrication through lever transmission.
Above all, there are various types of lubricating oil pumps for injection molding machines. Including servo oil pumps, gear oil pumps, multi-pump mode oil pumps, manual lubrication pumps, hydraulic oil pumps, AC/DC lubrication oil pumps, etc. These types of oil pumps are selected and configured according to the specific needs and application scenarios of the injection molding machine.
