A label application device including a pressurized air flow...

B - Operations – Transporting – 65 – C

Patent

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Details

B65C 9/28 (2006.01) B65C 3/00 (2006.01) B65C 9/26 (2006.01)

Patent

CA 2478057

A labeler for applying labels to articles is provided. The labeler includes a label application device having an opening in an end thereof. The label application device is expandable when subjected to pressure. The labeler also includes a positioner for supporting the label application device and moving the label application device between a label pick-up position and a label application position. A vacuum source and a pressure source are also provided which can be selectively connected to the label application device such the label application device is subject to pressure when adjacent the label application position and subject to vacuum for picking up and retaining a label on the label application device at the label pick-up position. The labeler also includes a flow control element having at least one flow control passage therein which defines at least one air flow path through the flow control element to the label application device opening. The flow control passage is configured to allow air flow through the air flow path and out the label application device opening when pressure is applied to the label application device, but being effective to delay the air flow from reaching the label application device opening.

L'invention concerne un applicateur d'étiquette qui comprend un dispositif applicateur dont une extrémité présente une ouverture. Le dispositif applicateur se dilate sous l'effet de la pression. L'applicateur considéré comprend un positionneur qui soutient le dispositif applicateur proprement dit, et qui déplace ce dispositif entre une position de préhension d'étiquette et une position d'application d'étiquette. Une source de vide et une source de pression sont prévues, avec connexion sélective au dispositif applicateur, de sorte que ce dispositif soit soumis à une pression lorsqu'il est adjacent à la position d'application d'étiquette, et de sorte qu'il soit soumis à un vide pour la préhension et la retenue d'étiquette, à la position de préhension d'étiquette. En outre, l'applicateur comprend un élément de commande de flux qui comporte au moins un passage de commande de flux définissant au moins un trajet de flux d'air à travers cet élément, à destination de l'ouverture du dispositif applicateur proprement dit. Ledit passage permet la circulation d'air, selon le trajet prévu, en direction de l'ouverture du dispositif applicateur, lorsqu'une pression est appliquée au dispositif applicateur, mais il permet aussi de retarder l'arrivée du flux d'air à l'ouverture du dispositif applicateur.

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