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Labeller is a device that attaches paper or metal foil labels to a specified packaging container with an adhesive. Labeling machines are an integral part of modern packaging. At present, the types of labeling machines in China are gradually increasing, and the technical level has also been greatly improved. From the backward situation of manual and semi-automatic labeling, the automatic high-speed labeling machine has occupied the market.
The labeling machine is commonly used to define the positive label: the label is attached to the packaging container, and the deviation between the center line of the label and its theoretical position is within the specified range of the round bottle self-adhesive automatic labeling machine, which is called the positive standard. Where there are multiple labels on the same packaging container, the deviation from the theoretical position shall be determined according to the above definition, and shall be within the specified range.
Labeling rate: The percentage of the number of packaging containers labeled with the labeling requirements (single or multi-label) and the total number of packaging containers being inspected.
Loss rate: The percentage of the number of labels damaged by the labeler during the labeling process and the total number of labels used when labeling the package being inspected.
Positive standard rate: The percentage of the number of packaging containers being marked in the package to be inspected and the total number of containers to be inspected.
Labeling machine type flat type labeling machine realizes labeling and filming on the upper plane and upper arc surface of the workpiece, such as box, book, plastic shell, etc. There are two methods of rolling and suction, mainly based on efficiency, precision and Bubbles are required for selection.
The round bottle labeling machine realizes labeling or filming on the circumferential surface of cylindrical and conical products, such as glass bottles and plastic bottles, which can realize functions such as circumferential, semi-circumferential, circumferential double-sided, circumferential positioning and labeling, etc. Vertical labeling and horizontal labeling.
The side-type labeling machine realizes labeling or filming on the side plane and side arc surface of the workpiece, such as cosmetic flat bottle, square box, etc., and can be equipped with round bottle labeling equipment, and at the same time realize round bottle labeling.
The working principle of the labeling machine The beginning of the working process is that the box feeds on the conveyor at a constant speed to the labelling machine. The mechanical fixture separates the boxes by a fixed distance and pushes the box in the direction of the conveyor. The mechanical system of the labeler includes a drive wheel, a labeling wheel, and a reel. The drive wheel intermittently drags the label belt to move, the label tape is pulled out of the spool, and the label wheel is pressed against the box by the labeling wheel. An open-loop displacement control is used on the reel to maintain the tension of the label strip. Since the labels are closely connected to each other on the label strip, the label strip must be constantly stopped and stopped.
The label is affixed to the box with the labeling wheel moving at the same speed as the box. When the conveyor reaches a certain position, the label drive wheel accelerates to match the speed of the conveyor belt, and then decelerates to a stop.
Since the label 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 label, the drive wheel will be repositioned to correct any positional errors on the label strip.
Labeling machine common sense major remedial class