Guide to Troubleshooting Common Full Electric Blow Molding Machine Issues

As the manufacturing industry continues to evolve, the demand for efficient, reliable, and environmentally friendly machinery grows. Leshan, a leading blow molding machine manufacturer, has set the standard with its full electric blow molding machines. However, even the most advanced equipment can encounter issues. This comprehensive guide will help you identify and troubleshoot common problems with full electric blow molding machines, ensuring minimal downtime and maximum productivity.

Understanding Full Electric Blow Molding Machines

Full electric blow molding machines, such as those produced by Leshan, offer several advantages over traditional hydraulic models. These include higher energy efficiency, precise control, cleaner operation, and reduced maintenance requirements. Despite these benefits, operators may still face occasional operational challenges that require prompt attention.

Why Choose Leshan’s Full Electric Technology?

Energy savings of up to 50% compared to hydraulic machines
Consistent product quality due to precise servo motor control
Clean, oil-free operation ideal for food and medical packaging
Lower noise levels and improved workplace safety

Common Issues and Troubleshooting Steps

Let’s explore some of the most frequently encountered problems with full electric blow molding machines and how to resolve them. The following troubleshooting tips are based on Leshan’s industry expertise and customer feedback.

1. Machine Fails to Start

Check Power Supply: Ensure the main power source is stable and all emergency stops are released.
Inspect Safety Interlocks: Verify that all safety doors and guards are properly closed and sensors are functioning.
Review Control Panel: Look for error codes or alarms on the HMI. Reset faults if necessary and consult the user manual for code definitions.

Pro Tip:

Regularly inspect electrical connections and keep the control cabinet free from dust and moisture to prevent startup failures.

2. Inconsistent Parison Thickness

Evaluate Extruder Temperature: Ensure barrel and die head temperatures match the material requirements.
Check Parison Programming: Adjust the parison controller settings for uniform wall thickness.
Inspect Material: Use only high-quality, dry resin to avoid moisture-related inconsistencies.

Leshan’s advanced parison control systems help maintain optimal thickness, but regular calibration is essential for best results.

3. Poor Product Finish or Surface Defects

Monitor Mold Temperature: Uneven or incorrect mold temperatures can cause surface imperfections.
Clean Mold Cavities: Residue or contamination inside the mold can transfer to the product surface.
Check Blowing Pressure: Insufficient or excessive air pressure may deform the product or cause bubbles.

Maintenance Tip:

Schedule routine mold cleaning and use only recommended release agents to ensure a flawless product finish.

4. Servo Motor or Drive Alarms

Examine Error Codes: Consult the machine’s manual or Leshan’s technical support for specific alarm meanings.
Check Wiring and Connections: Loose or damaged cables can trigger servo faults.
Monitor Overloads: Ensure the machine is not running beyond its rated capacity, which can overheat motors.

Full electric blow molding machines rely heavily on servo technology. Promptly addressing motor or drive alarms prevents costly downtime and component damage.

5. Product Sticking in the Mold

Review Mold Release: Ensure proper use of release agents and correct mold surface finish.
Adjust Cooling Time: Allow sufficient time for the product to solidify before demolding.
Inspect Mold Alignment: Misalignment can cause sticking or product deformation.

Preventative Maintenance Tips from Leshan

Preventative maintenance is key to maximizing the lifespan and efficiency of your full electric blow molding machine. Leshan recommends the following practices:

Perform daily visual checks for leaks, loose components, and abnormal noises
Keep the machine and surrounding area clean and free from debris
Regularly calibrate sensors, heaters, and servo systems
Use only genuine Leshan spare parts and consumables
Document all maintenance activities for future reference

By following these guidelines, you can minimize unexpected breakdowns and ensure consistent product quality.

Incorporating Automation and PET Blow Molding Innovations

As a forward-thinking blow molding machine manufacturer, Leshan continues to integrate advanced automation and digital monitoring into its product lines. Automation not only reduces labor costs but also improves process consistency and traceability. For manufacturers producing PET bottles, Leshan’s pet blow molding machine solutions offer high-speed, energy-efficient production with rapid mold change capabilities.

Additionally, the growing adoption of automatic blow molding machine technology allows for real-time quality inspection, remote diagnostics, and predictive maintenance, further reducing the risk of unplanned downtime.

When to Contact Leshan Technical Support

While many common issues can be resolved in-house, some situations require expert assistance. Contact Leshan’s technical support team if you encounter:

Repeated servo or PLC alarms that cannot be cleared
Unusual vibrations, noises, or overheating
Persistent product defects despite troubleshooting
Software or firmware update requirements

Leshan provides remote and on-site support, ensuring your production line returns to optimal operation as quickly as possible.

Conclusion: Ensure Peak Performance with Leshan

Full electric blow molding machines represent the future of efficient, sustainable plastic processing. By understanding common issues and applying the troubleshooting tips outlined above, you can keep your Leshan machines running smoothly for years to come. Remember, regular preventative maintenance and leveraging the latest automation features will further boost your productivity and product quality.

For more detailed technical resources or to learn about the latest innovations in pet blow molding machine and automatic blow molding machine technology, visit Leshan’s official website or contact their expert team today.

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