Patent ID: 8075467
Filing Date: 2011-12-13
Classification: B31B,B65B

Abstract:
1. A device for erecting flat-folded tubular blanks supplied in flat-folded form, which comprises: a collecting group provided with first gripping means for gripping flat-folded single tubular blanks at a first surface thereof, which gripping means are alternatingly mobile in a longitudinal direction and in a phase relation with a transport line of the tubular blanks when erected, between a pick-up station of the single tubular blanks from a store, in which the tubular blanks are predisposed in a flattened folded form, and an opening station of the single tubular blanks; an opening group arranged in the opening station and provided with second gripping means for gripping the single flat-folded tubular blanks at a second surface thereof, opposite the first surface engaged by the first gripping means, the second gripping means being mobile in a substantially vertical direction between a near gripping position of the second surface of the single tubular blanks and a distanced opening position thereof; a folding organ arranged in the opening station for progressively engaging a free side of the second surface of the single tubular blanks during the course of the opening thereof as the second gripping means move between the gripping position and the opening position, the folding organ being oscillatable about a folding axis which is parallel to a score line of the first surface and the second surface of the single tubular blanks, for moving the free side towards an upright position for completing the erecting of the tubular blanks.