The correct adjustment steps of the round bottle labeling machine are as follows:

1. Adjustment of the marking mechanism: Adjust according to the label winding guide diagram to ensure that the label maintains the correct direction and position during the winding process. At the same time, it is necessary to keep the label straightened and tightened after winding the label.

2. Marking mechanism adjustment: according to the diameter of the round bottle to adjust the marking mechanism. Specifically, the round bottle can be placed on the cover band, and the round bottle can be clamped to ensure that it is not loose.

3. Conveyor belt adjustment: Adjust the distance between the guide bars on the conveyor belt according to the diameter of the round bottle. The round bottle is placed on the conveyor belt, and the distance between the guide bar and the round bottle is maintained at 1mm by manually adjusting the screws on both sides of the conveyor belt guide bar.

4. Adjust the position of the label head: Adjust the height of the label head according to the height of the bottle, so that it maintains an appropriate distance from the bottle surface.

5. Adjust the position of the sensor: Adjust the position of the sensor according to the diameter of the bottle, so that it can accurately detect the position of the bottle.

6. Adjust the width of the guide rail: Adjust the width of the guide rail according to the diameter of the bottle, so that it matches the diameter of the bottle.

In addition, there are some other adjustment items:

1. Wheel attachment mechanism adjustment: between the working object and the wheel attachment, slightly clamping is ideal. The handwheel can be rotated clockwise to move the wheel press plate forward, and vice versa. If the pulley belt is too loose or too tight, the pulley screw can be adjusted to correct the tightness.

2. Labeling and measuring object photoelectric position and sensitivity adjustment: this includes position electric eye adjustment and electric eye sensitivity adjustment. Position The electric eye can be fixed by loosening the fixing screw and moving the electric eye fixing plate to the appropriate position. The adjustment of electric eye sensitivity involves the relationship between the position of the label and the attached object and the electric eye.

After completing the above steps, you can proceed with the labeling operation. First, place the round bottle to be labeled on the conveyor belt of the labeling machine, and adjust the position to ensure that the bottle is aligned with the guide rail. Then, turn on the power of the labeling machine, enter the labeling machine interface, select the bottle type to be labeled, and set the relevant parameters, such as label size, spacing, etc. Click the Start button and the labeling machine starts working, automatically removing the label from the label roll and attaching the label to the bottle via the conveyor belt. During the labeling process, sensors detect the position of the bottle to ensure that the label is attached in the correct position. Finally, after the labeling machine has finished attaching the label, remove the labeled bottle, place it in the designated position, and repeat the above operations until all bottles are labeled.

Please note that the specific adjustment steps may vary with different round bottle labeling models, so in actual operation, it is recommended to refer to the equipment manual or contact the manufacturer for consultation to ensure that the correct adjustment.