How to Eliminate the Fault of Laser Marking Machine Galvo Mirror?

Laser marking machines play a pivotal role in various industries, offering precision and efficiency. However, like any complex machinery, the galvo mirror component of a laser marking machine can encounter issues over time. Understanding common faults and their troubleshooting methods is essential for maintaining optimal performance. Here are some prevalent problems and effective solutions:

• Wavy Lines in Laser Marking

Issue

Appearance of wavy lines during laser marking.

Probable Cause

Elevated heat in the galvo mirror driver board.

Solution

Ensure proper ventilation and cooling for the galvo mirror driver board to mitigate heat-related issues.

• Slight Buzzing Noise from the Marking Head

Issue

Marking head emits a slight buzzing noise.

Probable Cause

Potential problems with the galvo mirror driver board.

Solution

Investigate and address issues within the galvo mirror driver board to resolve the buzzing noise.

• Inactive Galvo Mirror with Unlit Yellow Indicator Light

Issue

Galvo mirror remains stationary, and the yellow indicator light is not illuminated during marking.

Probable Cause

Lack of position data reception by the driver board.

Solution

Verify the correct connection of the control card and signal lines. Ensure the driver board receives the required position data.

• Unlit Green Indicator Light on Galvo Mirror Driver Board During Startup

Issue

The green indicator light on the galvo mirror driver board is not illuminated during mirror startup.

Probable Cause

Unpowered or damaged galvo mirror driver board.

Solution

Check the power supply for a voltage of ±15V. Ensure secure and correct connections.

• Significant Oscillation with Low Frequency at the Start of BIF Marking

Issue

High-amplitude, low-frequency oscillation at the starting edge during BIF marking.

Probable Cause

Adjustment-related issues with the galvo mirror.

Solution

Reevaluate and fine-tune the galvo mirror adjustment to mitigate oscillation during marking.

• Weak Laser Output in Laser Marking

Issue

Insufficient laser output during marking.

Probable Causes

Improper focal length adjustment.

Incorrect selection of CW method in marking software.

Misalignment of cavity, fully reflective mirrors, semi-reflective mirrors, and collimating lens.

Laser not hitting the center of the galvo mirror or scratched mirror lens.

Solutions

Adjust focal length, select the appropriate CW method, align optical components correctly, and inspect the galvo mirror for damage.

• Whistling Sound Generation

Issue

Production of a whistling sound.

Probable Cause

Improper adjustment of potentiometer on the galvo mirror driver board's filtering board or external interference.

Solution

Test marking card signals, wiring, and external interference. Make necessary adjustments to the potentiometer for proper functioning.

When troubleshooting, initial visual inspections and basic checks such as examining wiring and power supply are recommended. If issues persist, consulting relevant manuals or seeking professional assistance from the manufacturer is advisable. Addressing faults promptly ensures the laser marking machine operates at peak efficiency, minimizing downtime and maximizing productivity.