The beginning of the working process is that the box is fed to the labelling machine at a constant speed at the conveyor belt. The mechanical fixture separates the boxes at a fixed distance and drives the boxes along the conveyor belt. The mechanical system of the labeling machine consists of a driving wheel, a labeling wheel and a scroll. The driving wheel pulls the label belt intermittently. The label belt is pulled out of the scroll. At the same time, the label belt is pressed on the box by the label wheel. Open-loop displacement control is adopted on the reel to maintain the tension of the tag tape, because the tags are closely connected with each other on the tag tape, so the tag tape must be constantly starting and stopping.
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