The cause analysis and solution of mold ejector pin burnout

---The mold ejector pin , is a precision component used in injection molds to push molded plastic components out of the mold. Ejector pin burnout, that is the ejector pin loses its function due to overheating, is one of the problems that may be met during mold manufacture and use.
---Let us explore the reason why ejector pin will burn out and provide corresponding solutions.

Causes of burnout in ejector pin

1. Improper temperature control
---Continuing high temperature
The mold works at high temperature for a long time and fails to dissipate heat effectively, resulting in overheating of the ejector pin.
---Deficient in cooling system
The mold cooling system is designed improperly or breaks down, which makes the mold temperature cannot be reduced in time.

2. Mechanical friction
---Insufficient lubrication
Without sufficient lubrication between the ejector pin and the mold, which makes the friction increased and causes heat generated .
---Wear
The wear of the ejector pin and the mold leads to clearance decreased, which can increase friction.

3. Material problems
---Improper material selection
If you choose the ejector pin material with poor thermal stability, it will not be able to withstand high temperatures.
---Material fatigue
The ejector pin material becomes fatigued due to long-term use, which will result in performance reduction.

4. Design defects
---Ejector pin size
The ejector pin size is not designed properly, resulting in its uneven force.
---Cooling channel design
The mold cooling channel with improper design can affect the cooling effect.

Solution

1. Optimize temperature control
---Temperature monitoring
Install a temperature sensor to monitor the mold temperature in real time.
---Cooling system upgrade
Improve or upgrade the mold cooling system to improve cooling efficiency.

2. Reduce mechanical friction
---Lubrication
Lubricate the ejector pin and mold regularly to reduce friction between machines.
---Maintenance
Check the wear of the ejector pin and mold regularly, and repair or replace them in time.

3. Material selection and improvement
---Select heat-resistant materials
Select materials with high temperature resistance and good thermal stability to manufacture ejector pins.
---Surface treatment
Harden surface of the ejector pin to improve wear resistance and heat resistance.

4. Design optimization
---Dimension verification
Re-calibrate the size of the ejector pin to ensure uniform force.
---Cooling channel optimization
Optimize the design of mold cooling channel in order to improve cooling effect.

Conclusion

The mold ejector pin burnout is a complex problem involving multiple factors. By analyzing the possible causes and taking corresponding solutions, it is effective for the ejector pin to avoid burnout, which can improve the working life and production efficiency of the mold. In the meanwhile, mold manufacturers and users should pay attention to keep maintenance and repair of the ejector pin, so as to ensure the normal operation of the mold.