The automatic labeling machine is a device for attaching paper or metal foil labels to a prescribed packaging container with an adhesive. It can complete flat paste, single or multi-sided paste of packaging materials, cylindrical surface paste, partial or full-covering cylinder paste, and various operations such as dents and corners. The labeling process is roughly after the sensor sends out the labeling object to prepare the labeling signal, and the driving wheel on the labeling machine rotates. Since the reel label is tensioned on the device, when the bottom paper is in close contact with the peeling plate, the label is forcibly detached and ready for labeling due to the certain rigidity of the label. At this time, the labeling object is located at the lower part of the label, and under the action of the labeling wheel, synchronous labeling is realized.
The surface material of the automatic labeling machine, the stiffness of the label is the key to the labeling, and therefore requires a certain strength and hardness of the surface material. The bottom paper is also an important indicator for controlling automatic labeling. It is required that the surface of the bottom paper is coated with uniform silicon and the release force is consistent; the thickness is uniform, and the tensile strength is good, so as to ensure that the label is not broken; the thickness is uniform, and the light transmittance is good, so that the sensor correctly recognizes the position of the label. The release force, also known as the peel force, is the force when the label is released from the liner. The release force is related to the type and thickness of the adhesive and the silicon coating on the surface of the liner, as well as the ambient temperature at the time of labeling. The release force is too small, the label is easy to drop the label during the conveying process (out of the bottom paper); the release force is too large, the label is difficult to get out of the bottom paper, and the label cannot be produced. All technical indicators should be comprehensively controlled so that the release force is within a reasonable range.
Adjustment of the automatic labeling machine marking station (1) Adjustment of the scraping rubber sheet and the rubber roller: the scraping rubber plate and the rubber roller can not have a gap in the entire length, and if there is a gap, the offset rubber plate can be adjusted to adjust the scraping rubber plate;
(2) Adjustment of the rubber roller and the target plate: the target plate and the rubber roller only contact each other without any pressure. If the gap is too large, the glue on the label will be too much, causing the glue. The gap is too small, the contact is too tight, the glue will be squeezed away, and there is no glue on the half of the target. Practice has proved that the gap between the target plate and the rubber roller is between 0.1mm and 0.2mm. This can be achieved by adjusting the bearing housing in the lower part of the rubber roller and adjusting the bearing on the upper part of the rubber roller if necessary.
The surface material of the automatic labeling machine, the stiffness of the label is the key to the labeling, and therefore requires a certain strength and hardness of the surface material. The bottom paper is also an important indicator for controlling automatic labeling. It is required that the surface of the bottom paper is coated with uniform silicon and the release force is consistent; the thickness is uniform, and the tensile strength is good, so as to ensure that the label is not broken; the thickness is uniform, and the light transmittance is good, so that the sensor correctly recognizes the position of the label. The release force, also known as the peel force, is the force when the label is released from the liner. The release force is related to the type and thickness of the adhesive and the silicon coating on the surface of the liner, as well as the ambient temperature at the time of labeling. The release force is too small, the label is easy to drop the label during the conveying process (out of the bottom paper); the release force is too large, the label is difficult to get out of the bottom paper, and the label cannot be produced. All technical indicators should be comprehensively controlled so that the release force is within a reasonable range.
Adjustment of the automatic labeling machine marking station (1) Adjustment of the scraping rubber sheet and the rubber roller: the scraping rubber plate and the rubber roller can not have a gap in the entire length, and if there is a gap, the offset rubber plate can be adjusted to adjust the scraping rubber plate;
(2) Adjustment of the rubber roller and the target plate: the target plate and the rubber roller only contact each other without any pressure. If the gap is too large, the glue on the label will be too much, causing the glue. The gap is too small, the contact is too tight, the glue will be squeezed away, and there is no glue on the half of the target. Practice has proved that the gap between the target plate and the rubber roller is between 0.1mm and 0.2mm. This can be achieved by adjusting the bearing housing in the lower part of the rubber roller and adjusting the bearing on the upper part of the rubber roller if necessary.
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