Device for opening tubular bag bodies

Details Device for opening tubular bag bodies Device for opening tubular bag bodies

B - Operations, Transporting

31

B

B31B 29/00 (2006.01) B31B 1/78 (2006.01)

Patent

CA 2313072

The invention relates to a device for opening tubular bag shapes which are open at at least at one end, comprising at least one slide which can be introduced into an open end of a bag between the bag walls, in order to at least partially fold over at least one end area of a bag wall. According to the invention, the at least one slide (3) can be moved in and out of the bag end to be opened by means of at least one, driven cam (9) which can be moved along a predetermined path (8) and which engages with the slide (3). The slide (3) preferably takes a circular path (4), said circular path comprising a section which runs parallel to a bag-transporting device. The speed of transportation of the bags (2, 2a) on the conveyor device (1) and that of the slide (3) around the circular path are equal.

L'invention concerne un dispositif permettant d'ouvrir des sacs tubulaires ouverts à au moins une extrémité. Le dispositif comprend au moins un coulisseau, qui peut s'introduire entre les parois du sac dans une extrémité ouverte de celui-ci de façon à déplier au moins partiellement la zone terminale de ladite paroi. Selon l'invention, le coulisseau (3) peut être introduit dans l'extrémité du sac à ouvrir ou en être retiré par au moins une came (9) mobile, entraînée selon un trajet prédéfini (8) et entrant en contact avec ledit coulisseau (3). De préférence, celui-ci se déplace sur une glissière de guidage (4) qui comporte une partie parallèle à un dispositif de transport des sacs. La vitesse de transport desdits sacs (2, 2a) sur le dispositif de transport (1) et celle du coulisseau (3) sur la glissière de guidage sont identiques.

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