An unwind station for a packaging machine may be configured to form wrappers having different sizes from a web of packaging material and supply the wrapper to a wrapping station. The unwind station may include a base configured to support the web of packaging material and a carriage configured to selectively slide in a longitudinal direction on the base. A rotating blade can be configured to periodically score the web to form a break line extending between lateral sides of the web. A first conveyor arm and a second conveyor arm may project longitudinally outward from the carriage. The first conveyor arm and the second conveyor arm can each include a low-speed conveyor configured to transport the web to a high-speed conveyor. The high-speed conveyor is configured to separate the wrapper from the web as the break line passes a shear point between the low-speed conveyors and the high-speed conveyors.
B65B 59/00 - Dispositions pour permettre aux machines de manipuler des objets de différentes dimensions, d’obtenir des paquets de différentes dimensions, de varier le contenu des paquets ou de donner accès pour le nettoyage ou l'entretien
B65B 41/12 - Alimentation des bandes à partir de rouleaux
B65B 45/00 - Appareils ou dispositifs pour supporter ou tenir les enveloppes d'emballage pendant l'opération d'emballage
B65B 61/02 - Dispositifs accessoires, non prévus ailleurs, opérant sur feuilles, flans, bandes, attaches, réceptacles ou paquets pour perforer, inciser ou appliquer des marques de code ou de dates avant l'emballage
B65B 61/12 - Dispositifs accessoires, non prévus ailleurs, opérant sur feuilles, flans, bandes, attaches, réceptacles ou paquets pour découper les bandes ou pour séparer les paquets joints en déchirant le long des perforations ou des lignes de moindre résistance
B65B 11/18 - Enveloppement d'objets ou de quantités de matériaux, par déplacement de l'enveloppe et du contenu sur des parcours déterminés sur plusieurs parcours rectilignes
B65B 25/14 - Emballage de papier ou feuilles analogues, enveloppes ou journaux, à plat, pliés ou roulés
B65B 11/08 - Enveloppement d'objets ou de quantités de matériaux, par déplacement de l'enveloppe et du contenu sur des parcours déterminés sur un seul parcours rectiligne
B65B 41/16 - Alimentation des bandes à partir de rouleaux par cylindres
An unwind station for a packaging machine may be configured to form wrappers having different sizes from a web of packaging material and supply the wrapper to a wrapping station. The unwind station may include a base configured to support the web of packaging material and a carriage configured to selectively slide in a longitudinal direction on the base. A rotating blade can be configured to periodically score the web to form a break line extending between lateral sides of the web. A first conveyor arm and a second conveyor arm may project longitudinally outward from the carriage. The first conveyor arm and the second conveyor arm can each include a low-speed conveyor configured to transport the web to a high-speed conveyor. The high-speed conveyor is configured to separate the wrapper from the web as the break line passes a shear point between the low-speed conveyors and the high-speed conveyors.
B65B 11/00 - Emballage par enveloppement, p. ex. en enfermant partiellement ou complètement des objets ou des quantités de matériaux dans des bandelettes, feuilles ou enveloppes en matière flexible
B65B 25/14 - Emballage de papier ou feuilles analogues, enveloppes ou journaux, à plat, pliés ou roulés
3.
DEVICE FOR HEAT-WELDING SUPERPOSED FLAPS OF A WRAPPING ENVELOPING A SET OF ARTICLES
The device (1) is associated, in line, to an outlet of a packing machine and is designed to seal superposed flaps (Ls, Li) of packs (C), at longitudinal vertical sides (V) thereof. The device comprises means (2) for receiving and moving the packs (C) and two batteries (3, 4) of heat-welding rollers (30, 40), having a vertical axis, destined to act on respective longitudinal vertical sides (V) in order to heat the flaps (Ls, Li) up to a temperature which is sufficient to cause joining by aggregation of the packing material. Cooling means (5) are provided downstream of the batteries (3, 4) which are destined to act on the flaps (Ls, Li) in order to lower the temperature thereof and thus stabilise the join.
brevets
