unit for the levy of a fustellato flattened tubular in configuration, and for the mass to volume of the same fustellato tubular

摘要

A unit for picking-up a tubular blank in a flattened configuration and for opening out the tubular blank, comprising: gripping means; a pick-up member (8) which bears the gripping means (7); a frame (9); a first arm (11) which is hinged to the frame (9) at a first hinge axis (12) which is hinged to the pick-up member (8) at a second hinge axis (13); a second arm (14) which is hinged to the frame (9) at a third hinge axis (15), the third hinge axis (15) being arranged at a lower height than the first hinge axis (12); a third arm (16) which is hinged to the second arm (14) at a fourth hinge axis (17) and which is hinged to the pick-up member (8) at a fifth hinge axis (18); the first arm (11) and the second arm (14) being activatable in phase relation with one another; the unit (1) being configured such that the pick-up member (8): picks up the tubular blank (2) in a flattened configuration from the pick-up position (P); rests the tubular blank (2) on a rest plane (19), realising, in cooperation therewith, the opening-out of the tubular blank (2); and returns the pick-up member (8) towards the pick-up position (P), passing over the opened-out tubular blank (2).