The significance of the injection molding machine Electrical System maintenance is mainly reflected in the following aspects: to ensure the normal operation of the equipment, to prevent malfunctions and stoppages; to improve production efficiency and product quality
The electrical system of the injection moulding machine plays the role of the nerve conduction of the whole machine, and its daily maintenance is the key to ensure that the production automation is carried out smoothly.
Electrical System of injection molding machine maintenance is an important part of ensuring its normal operation and prolonging its service life.
Method for maintenance of electrical system of injection molding machine
The following are some detailed methods and precautions regarding the maintenance of the plastic moulding electrical system:
- Check the electrical connection
- Clean the inside of the electrical cabinet
- Protect grounding and zeroing
- Regular inspection and maintenance of electrical components
- Preventive injection moulding machine maintenance
- Operational safety
- Maintenance cycle
Check the electrical connection:
We regularly check whether the connection of the electrical lines is firm to avoid failure caused by poor contact.
Clean the inside of the electrical cabinet:
Clean the inside of the electrical cabinet regularly to prevent short circuits or fire hazards.
Protect grounding and zeroing:
Ensure that there is a reliable electrical connection between the metal casing of the plastic moulding electrical equipment and the grounding electrode to reduce the occurrence of electric shock.
Regular inspection and maintenance of electrical components:
Including the aging, breakage, or broken insulation of wires and cables, as well as the bearings, windings and other key parts of the motor.
Preventive injection moulding machine maintenance:
Through regular inspection and maintenance, accidental damage can be effectively prevented and the reliability and stability of the equipment can be improved.
When carrying out maintenance of the electrical injection moulding system, it should be ensured that the operator has the appropriate professional knowledge and operates after 5 minutes of power failure to avoid electric shock accidents.
Maintenance cycle:
It is recommended to carry out daily maintenance and regular maintenance according to a certain cycle.
Such as briefly checking the operating status of the equipment daily and cleaning and lubricating work every week.
Specifically needs to be combined with the factory’s production cycle reasonable arrangement
Through the above measures, the electrical system of the injection molding machine can be effectively maintained to ensure its stable and efficient operation.
The role of the electrical system of the injection molding machine
The electrical system of the injection molding machine plays a vital role in the injection molding machine as the ‘nerve center’ of the injection molding machine.
Which is mainly showing in the following aspects:
- Controlling the injection process
- Improvement of energy efficiency and energy saving
- Enhance the reliability and safety of the system
- Enhance the ease of operation and human-machine interaction experience
- Supporting the operation of complex moulds
- Realise intelligence and networking
Controlling the injection process:
The electrical system of the injection molding machine realizes the automatic control of the injection molding machine through a PLC (Programmable Logic Controller) frequency converter and other equipment.
Including the precise control of each process such as mold clamping, injection, pressure preservation, cooling, mold opening, and ejecting, etc.
This kind of control not only improves production efficiency but also ensures the quality of the products.
This control not only improves production efficiency but also ensures consistency and stability of product quality.
Improvement of energy efficiency and energy saving:
By adopting highly efficient electric control systems, such as servo motors and frequency converters, the electrical system of the injection molding machine can adjust the power output according to the actual production demand, avoiding the waste of energy and thus achieving the purpose of energy-saving.
For example, the control system of an all-electric injection molding machine is able to maintain a low speed in non-working conditions, further reducing energy consumption.
Enhance the reliability and safety of the system:
Modern injection molding machine electrical system usually adopts highly reliable hardware and software designs.
Such as the use of PLC for fault diagnosis and self-protection, to ensure that the equipment can be safely shut down under abnormal conditions and prevent accidents from occurring.
Enhance the ease of operation and human-machine interaction experience:
Through the integration of a touch screen and HMI (human-machine interface), the operator can more intuitively monitor and adjust the production parameters.
While the system can also provide real-time data feedback to facilitate decision-making by the operator.
Supporting the operation of complex moulds:
For moulds with complex structures, the electrical control system can accurately control the core-pulling and mould-opening actions of the moulds to ensure the correct operation of the moulds and prolong the life of the moulds.
Realise intelligence and networking:
With the development of Industry 4.0, the electrical system of injection moulding machine is also developing in the direction of intelligence and networking.
By integrating advanced sensors and communication technologies, injection molding machines can not only achieve local intelligent control.
But also exchange data with other systems within the enterprise to optimise and manage the production process.
In conclusion, electrical System of injection molding machine maintenance is the key technology to achieve efficient, precise, safe and intelligent operation of injection moulding machine.
Which is of great significance to enhance the technical level and competitiveness of the whole plastics processing industry.
How to check injection molding machine electrical system links?
The process of checking the electrical system linkage of the injection moulding machine needs to start from the power linkage.
Then checking to the signal transmission and electrical test.
Let us stand the specific steps:
- Power connection check
- Prevent electrical leakage
- Motor and drive unit inspection
- Auxiliary equipment connection
- Electrical safety device inspection
- Electrical test
Power connection check:
Firstly, make sure the to connect power supply correctly. Press the [Power] button on the operation panel and observe whether the movement direction of the injection unit is correct.
If the ejection device moves in the opposite direction, it means that the wiring connection is wrong, and you need to align the power inlet lines L1 and L2 with each other.
Make sure the fuse is installed correctly and connect the power cable to the circuit breaker of the electrical box inlet line to ensure that the voltage and frequency meet the requirements.
Prevent electrical leakage:
Connect the grounding conductor according to the specified dimensions, one end to the platform side of the injection side.
And the other end to a ground rod or soldered to a copper plate and buried deep in the ground where it will not be dry to prevent electrical leakage accidents.
Motor and drive unit inspection:
Ensure that the specified drive unit and servo motor terminals are firmly grounded.
Check the power terminal wiring, input voltage, power supply cable and motor cable for shorts or grounding, and confirm that the encoder cable is properly connected.
Auxiliary equipment connection:
Connect the robot power and signal cables to the terminal block inside the electric cabinet of the injection moulding machine.
And make sure that no external voltage is applied when the input signal circuit is directly connected to the system’s weak circuit.
Electrical safety device inspection:
Check whether the electrical safety devices such as safety door and safety door limit switch, mould adjustment limit switch, injection device limit switch, etc. are working properly.
Electrical test:
Check the resistance of bolted connections using a low-impedance ohmmeter and compare the resistance values with those of similar connections to ensure that there is no high resistance. Perform a one-minute insulation resistance test on each pole to ensure there are no short-circuit or grounding problems.
By following these steps, you can thoroughly check the links of the injection molding machine’s electrical system to ensure safe and reliable operation.
How often to maintain the electrical system of the injection molding machine？
Maintenance intervals for the electrical systems of injection molding machines are usually into different intervals.
Depending on the level and content of the maintenance.
Injection molding machine maintenance can be weekly, monthly, quarterly, and annual cycles.
For example, monthly maintenance may include checking the electrical wiring section, making sure there are no loose fuses, etc.
More frequent maintenance such as weekly inspections involves items such as tightening connection bolts.
In addition, machine need shorter maintenance intervals for some critical components or equipment.
For example, some studies indicate that in order to maintain high-reliability values
Maintenance intervals for some injection molding machines maybe every 12 hours or 4 hours.
However, these figures apply more to specific models of electrical injection moulding and not necessarily to all types of injection molding machines.
Overall, maintenance intervals for the electrical system of an injection molding machine are according to the specific use of the equipment and the manufacturer’s recommendations.
With common intervals being weekly, monthly, quarterly, and annually.
Electrical System adjust of injection molding machine maintenance and frequency should according to the actual operating conditions of the equipment and the guidance provided by the manufacturer.
Features of Haichen injection molding machine electrical systems
The electrical system of Haichen injection molding machine has a stable control system core position, high precision, energy saving, and other qualities:
- The core position of the control system
- Support of power distribution and heating system
- Energy-saving design
- High precision and stability
The core position of the control system:
The electrical system of Haichen injection molding machine takes the control system as the core.
Which includes STD bus industrial control microcomputer system, programmable controller and pressure sensor, etc.
It can achieve precise control and adjustment of time, position, pressure, speed, and other parameters.
Support of power distribution and heating system:
The electrical system not only includes the control system but also covers the power distribution system and heating system.
Which are respectively responsible for providing power and heating functions for the whole system to ensure the stability and high efficiency of the injection molding process.
Energy-saving design:
Haichen injection molding machine adopts frequency conversion speed control technology by electrical plastic injection moulding.
Which achieves energy saving by controlling the pressure or flow rate of the oil pump at different stages.
Compared with the traditional proportional valve throttling and speed control method.
It can significantly reduce energy consumption, and the effect of power saving is remarkable.
High precision and stability:
The electrical system of Haichen injection molding machine adopts a high-performance servo motor and EtherCAT bus technology.
Which achieves more accurate injection process control, and the system has fast response speed and high stability to meet the demand of a high-speed injection process.
The electrical system of Haichen injection molding machines provides reliable support for the injection molding process with its core control system.
Like energy-saving design, high precision, and stability.
