| 摘要 |
A unit (1) for picking up a tubular container (2) in a flattened configuration, for opening out the tubular container (2) and for transferring the tubular container (2) towards a receiving station (R) of the tubular container, comprising: a first arm (14) hinged to the frame at a first hinge axis (15); a second arm (16) hinged to the frame at a second hinge axis (15); a third arm (18) which is hinged to the first arm (14 and which is hinged to the second arm; the frame, the first arm (14), the second arm (16) and the third arm (18) forming a four-bar linkage; a fourth arm (21) which is hinged to the third arm (18) at a fifth hinge axis (22) and which bears first aspirating means (23) of the tubular container (2); a fifth arm (25) which is hinged to the fourth arm (21) and which is conformed such as to abut the first sheet (6) of the tubular container (2); the unit (1) being designed such that: in an initial pick-up configuration of the tubular container (2) from the pick-up position (P), the third arm (18) is in the first retracted position (A1) and the fourth arm (21) is in the first retracted angular position (A2) such that the first aspirating means (23) can be activated such as to intercept the first side (8) of the first sheet (6) of the tubular container (2); in a final release configuration of the tubular container (2) at the receiving station (R), the third arm (18) is in the second advanced position (B1) and the fourth arm (21) is in the second advanced angular position (B2) such that the first aspirating means (23) can be deactivated such as to release the tubular container (2) in the receiving station (R); during rotation of the fourth arm (21) from the first retracted angular position (A2) to the second advanced angular position (B2) the fifth arm (25) is moved such as to abut the second side (9) of the first sheet (6) of the tubular container (2) and to open out the tubular container (2). |
