Pull-back type stripping mechanism and self-adhesive labeling machine using it

Abstract

The pull-back stripping mechanism and the self-adhesive labeling machine using it are used to peel the label from the bottom tape of the label, including a peeling knife, a label feeding mechanism that pulls the label tape out of the label storage tray, and the stripped The label bottom belt is pulled back to the pull-back mechanism of the label bottom belt recovery tray; the label feeding mechanism includes a damping block and a driven wheel that cooperate with each other to clamp the label belt, and an uncoiling wheel and a slave wheel that cooperate with each other to clamp the label belt. The moving wheel; the label tape located between the damping block and the unwinding wheel is in a relaxed state; the pullback mechanism is composed of a label feeding wheel and a driven wheel that cooperate with each other to clamp the label tape. The present invention adopts a label feeding wheel to pull back the label bottom film from the front end of the peeling knife, and uses the damping block at the rear end to keep the label film at a constant tension, so that the label film is not squeezed before peeling off, avoiding dry The phenomenon of glue overflow and embossing on the adhesive label; the structure is simplified, the cost is reduced, and a better peeling effect is achieved.

Description

technical field [0001] The invention relates to a labeling machine, in particular to a pull-back type stripping mechanism and a self-adhesive labeling machine using it. Background technique [0002] A labeling machine is a machine used to stick labels on commodities. There is a label tape consisting of a label and a continuous label bottom tape (similar to a self-adhesive structure of a roll), and a peeling knife is used to separate the label from the bottom tape Separation, the label is sent to the labeling position, and the label bottom tape is recovered by the label bottom tape recovery tray. At present, the labeling machine of this kind of label tape adopts a double-feeding wheel structure to realize the stripping label, that is, the front end of the stripping knife uses a driving wheel to pull the label tape to the label bottom belt recovery tray, and the rear end of the stripping knife uses a driving wheel to pull the label tape. Pull from the label storage tray. The...

AI Technical Summary

Problems solved by technology

The pair of driving wheels are driven by the same servo motor. Due to factors such as machining errors or wear after use, the unequal diameters lead to unequal linear speeds of the pair of driving wheels during the labeling process, resulting in either the label being loose. state (the change of film tension is 0), or it is in the state of the two driving wheels tearing towards both ends (may cause the film tension to be infinitely large, causing the label film to loosen, unable to peel off or break)

[0003] In order to avoid this phenomenon, some manufacturers use two servo motors to drive the two driving wheels respectively, but due to machine wear and other reasons, as well as many unforeseen errors, the servo motors cannot achieve the compensation effect, and such a structure costs Very high, but only a slight improvement in results, does not eliminate this phenomenon

[0004] In addition, the extrusion of the driving wheel before the peeling knife (at this time the label and the label bottom tape are still glued together) will cause the pre-coated self-adhesive on the label to overflow, and there will be extrusion patterns on the surface of the label

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