In the highly automated poultry egg processing industry, egg coding machines have become key equipment for ensuring food safety, achieving product traceability and enhancing brand image. However, as precise industrial equipment, inkjet printers are bound to encounter some malfunctions after long-term operation. Timely maintenance not only ensures the smooth operation of the production line but also significantly extends the service life of the equipment, saving a large amount of costs for the enterprise.

Five Common Faults of Egg Coding Machines and Quick Solutions

1、Unclear inkjet printing, incomplete characters or breakpoints

Possible causes:

（1）Improper ink viscosity: The ink is too thick or too thin.

（2）Nozzle clogging: The ink dries up or dust in the environment adheres to the nozzle.

（3）Improper distance between the nozzle: The distance between the nozzle and the surface of the egg is either too far or too close.

（4）Phase detection error: The device failed to accurately detect the arrival position of the egg.

Solution：

（1）Execute the automatic nozzle cleaning program of the equipment.
（2）Check the expiration date of the ink and adjust the viscosity with the original ink/thinner.
（3）Clean and adjust the nozzle position to the optimal distance.
（4）Check and clean the photoelectric sensor (phase sensor) to ensure it can be triggered precisely.

2、The inkjet coding position is inaccurate, offset or jumping

Possible causes:
（1）Conveyor belt shaking or slipping: This causes the eggs to be in an unstable position when passing through the nozzle.
（2）Poor sensitivity of the phase sensor: Inaccurate detection timing.
（3）Loose equipment fixation: The nozzle or sensor bracket is loose.
Solution：
（1）Check the tension of the conveyor belt to ensure smooth operation.
（2）Readjust the detection timing and sensitivity of the phase sensor.
（3）Regularly tighten the screws of all parts of the equipment.

3、The machine fails to start or frequently crashes

4、 Ink leakage or abnormal recovery

5、Communication failure, connection to the main control system interrupted

（2）Confirm in the software Settings that the communication parameters (such as baud rate, address, etc.) are consistent with those of the main system.

The golden rule for daily maintenance and care: Prevent problems before they occur

1、Daily maintenance

2、Weekly maintenance

3、Monthly and quarterly maintenance

The egg coding machine is the "silent guardian" of the production line, and its stable operation is related to the efficiency and quality of the entire production. By mastering these common troubleshooting techniques and establishing a scientific and regular maintenance system, you can not only minimize unexpected downtime but also extend the golden working life of the equipment by several years, thereby bringing long-term and stable returns to the enterprise.