Function of an injection molding machine’s lubricating oil pump is to circulate oil throughout the machine’s lubrication system.
Ensuring that moving parts are adequately lubricated to reduce friction, prevent wear and tear, and promote smooth operation.
Lubricating oil pump of the injection molding machine is to provide power to the hydraulic system, maintain the system pressure.
And at the same time have multiple functions such as cooling, lubrication and flow control.
So as to ensure the efficient and stable operation of the injection molding machine.
Understanding the lubricating oil pump
Ah, the oil pump.
The unsung hero of the injection molding machine.
Without it, the world of plastic manufacturing would be in shambles.
Well, maybe not shambles, but certainly not as smooth and efficient as it is today.
So, let’s take a moment to appreciate this small yet mighty component of the machine.
Components of the lubricating oil pump
The oil pump consists of various parts that work together harmoniously to keep the machine going strong.
It have the pump body, the cap, the oil tube.
And remember, keep that oil pump well-maintained, and it will reward you with precise, efficient, and high-quality plastic products.
Now, let’s move on to the not-so-fun part – the common causes of damage to the oil pump.
Function of lubricating oil pump
- Provide hydraulic power
- Maintain system pressure
- Cooling & Lubrication
- Control Flow & Direction
- Auxiliary functions
Provide hydraulic power
The hydraulic system of the injection molding machine is one of its core parts.
And the lubricating oil pump provides the necessary hydraulic power for the whole machine by extracting the hydraulic oil from the oil tank and delivering it to various components in the system.
Such as valves, cylinder blocks, etc.,these hydraulic forces are used to drive the closing and opening of the mold.
The movement of the pushrod, and the operation of the injection unit.
Maintain system pressure
The lubricating oil pump is driven by a motor to raise the hydraulic oil from a low pressure state to a high pressure state.
Ensuring that all components in the system can receive stable pressure support.
This pressure is not only used for the closing and opening of the mold.
But also for keeping the pressure stable during the injection process, thus guaranteeing the quality of the product.
Cooling & Lubrication
The lube oil pump not only provides power to the hydraulic system, but also plays a cooling and lubricating role.
By delivering hydraulic oil to the system, heat can be removed and friction between mechanical components can be reduced.
Resulting in longer equipment life and increased productivity.
Control Flow & Direction
By working with the valve, the lube oil pump can adjust the flow and direction of the hydraulic oil to meet different operational needs.
For example, when the mold is closed, the oil pump will release the oil into the push rod cavity and push the mold to close.
During the injection process, the oil pump controls the injection speed and pressure by adjusting the flow rate.
Auxiliary functions
The lubricating oil pump may also be involved in other auxiliary functions.
Such as the control of the mold temperature or the fine-tuning of the injection speed.
By adjusting the pressure and flow of the hydraulic oil in some special processes.
Applications of Lubricating Oil Pumps
Generally, injection molding machines are usually equipped with a hydraulic system.
And an oil pump is used in the hydraulic system to drive the flow of hydraulic oil.
For example, when starting a machine, the “oil pump” kicks in and creates pressure to deliver oil through a valve into a slide or switch cylinder, which pushes the mold to close.
This shows that the oil pump is not only used for lubrication in injection molding machines.
But also participates in critical operations such as mold closing.
Lubricating Oil Pump in Different Injection Molding Machines
Different types of injection molding machines may have different requirements for lubricating oil pumps.
For example, some injection molding machines are equipped with Fixed Displacement Pumps.
While others are equipped with Variable Displacement Pumps.
The design of these pumps has a direct impact on the efficiency and flexibility of the lubrication system.
Technical characteristics of lubricating oil pumps
At the same time, the design of lubricating oil pumps is often required to be able to withstand high pressure and high temperature environments.
For example, the hydraulic system of an injection molding machine needs to be heated with oil-based plastics.
Which requires the oil pump to be able to withstand high operating conditions.
In addition, some syringe pumps, such as those used for chemical injection, are resistant to wear and low friction.
And these properties are equally applicable to lubricating oil pumps in injection molding machines.
