Talking about the choice of self-adhesive labeling machine from the main function and control

August 04 07:24:28, 2021

In the past, the labeling position detected by the self-adhesive labeling machine was based on the front edge of the bottle body. Because the bottles of different diameters need to be moved or the labeling time is changed accordingly, if the change is not made, the labeling cannot be ensured. The required position of each bottle. Today's products feature the "automatically calculate label length" feature, which effectively compensates for these weaknesses. “Automatic calculation of label length” is an automatic control technology formed by the combination of PLC and servo motor technology. When the conveyor belt bottle detects the electric eye, the radius of the bottle is measured, and the zui bump on the outer edge of the bottle is taken as a sticker. The sensing point of the standard signal, that is, regardless of the diameter of the bottle, is the sensing point of the zui bump on the outer edge of the bottle, so that the distance between the electric eye and the peeling plate does not need to be mechanically adjusted. The standard time does not have to be adjusted at all. This is the automatic control principle of "automatically calculate the label length". This is also the preferred point for people to have the function of the self-adhesive labeling machine.

In the synchronization of the control speed, in addition to the above-mentioned "automatic calculation of the label length" function, the self-adhesive labeling machine should automatically complete the synchronous adjustment of the conveyor belt speed, the bidding speed, the bidding length, etc., which is also the same as the traditional The difference between the self-adhesive labeling machine is the guarantee of the quality stability of the labeling. The control speed of traditional self-adhesive labeling machines is adjusted by human experience, and the difficulty of artificial adjustment is that all movements are difficult to synchronize. If it is not synchronized, the labeling process will change frequently, resulting in poor labeling quality.

In the control system, the preferred (PLC+Human Machine Interface) control system is the main one. Compared with the earlier single-chip microcomputer (single board machine), using the general-purpose PLC as the main control device enables the PLC control system to achieve the following purposes: 1) It is more stable and more reliable; (2) It is more convenient to maintain in the future, and the upgrade is simpler; (3) It can be conveniently controlled online with the upper and lower stations.

In addition, it is necessary to consider adding a visual system that can detect, control and alarm real-time for the integrity of the print, the condition of the font, and whether the label after labeling is complete or not.

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