The work process begins with the boxes being fed to the labeller at a constant speed on the conveyor belt. Mechanical fixtures separate boxes at a fixed distance and push boxes in the direction of the conveyor beltThe mechanical system of the labeller consists of a drive wheel, a labeling wheel, and a reel. The drive wheel intermittently drags the label belt to the motion, the label belt is pulled out of the reel, and the label belt is pressed against the box through the label wheel. An open-loop displacement control is used on the reel to maintain the tension of the label belt Because the label is closely connected to each other on the label belt, the label tape must constantly start and stop.
The label is attached to the box with the labelling wheel moving at the same speed as the box. When the conveyor belt reaches a specific position, the drive wheel of the label belt accelerates to the speed that matches the conveyor belt, applies the label, and then slows down to a stop.
Since the label band may slip, it has a registration mark on it to ensure that each label is placed correctly. The registration mark is read by a sensor, and during the deceleration phase of the tag belt, the drive wheels are repositioned to correct any misposition on the tag belt.
