The correct method of installing the rubber head of the labeling machine can be divided into the following steps:

1. Preparation: First, confirm whether the labeling machine and the accessories for installing the rubber head are complete, and Clear clutter from countertops.

2. Insert the rubber head: Insert the plug for installing the rubber head into the socket of the labeling machine. Depending on the model of the label machine, the plug may need to be inserted in a specific direction. Please note that the force during insertion should be moderate and do not use excessive force.

3. Fix the rubber head: Depending on the design of the labeling machine, it may be necessary to use screws or other fixing devices to fix the rubber head on the labeling machine. Be careful to ensure that the rubber head is firmly installed and not loose.

4. Adjust the position: According to the usage requirements of the label machine, it may be necessary to adjust the position or angle of the rubber head. If necessary, adjustments can be made by rotating or adjusting the fixture.

5. Test function: After completing the installation, it is recommended to test to ensure the normal operation of the label machine and rubber head. You can use the test function provided by the label machine, such as test printing on paper, or use test label materials for testing. If you find any problems with the label machine or rubber head, you should stop using it and contact after-sales service.

It should be noted that each label machine and glue head may have different installation methods. Please refer to the corresponding instruction manual or contact the label machine manufacturer for specific installation instructions. If the above methods cannot help you correctly install the rubber head of the label machine, it is recommended that you consult professional technicians or seek help from the label machine manufacturer.