Wrapping machine
AssigneesAetna Group S.P.A., Robopac S.P.A.
InventorMauro Ceré
Life of this patent
Estimating the term…
Abstract
A wrapping machine for wrapping material around a load includes a wrapping unit to wrap a portion of the material around the load and a supplying unit to supply the material portion to the wrapping unit. The wrapping unit includes wrapping device to unwind the material portion from the supplying unit and wrap it around the load. The wrapping unit includes a supporting ring, rotating around a wrapping axis and provided with a plurality of wrapping rollers, and an unwinding arm having a first end rotatably fixed to the support ring and a second end supporting at least one unwinding roller to abut and guide the portion of material towards the load during wrapping. The unwinding arm is movable to move the unwinding roller to/from the load during wrapping.
Claims20
A wrapping machine for wrapping a flexible and wrappable material (50) around a load (100), the wrapping machine comprising:
- a wrapping unit (10) to wrap a material portion (51) of the flexible and wrappable material (50) having a preset length around the load (100);
- and
- a supplying unit (30) to supply the material portion (51) having the preset length to said wrapping unit (10),
- wherein said wrapping unit (10) includes a wrapping device (12) to unwind the material portion (51) from said supplying unit (30) and to wrap the material portion around the load (100),
- wherein said wrapping device (12) includes:
- a supporting ring (13) rotatable around a wrapping axis (X) and provided with a plurality of wrapping rollers (14;
- 114) mounted thereon angularly spaced apart from each other and rotatable around respective longitudinal axes, said wrapping rollers being parallel to the wrapping axis (X);
- an unwinding arm (15) having a first end (15a) rotatably fixed to said supporting ring (13) and a second end (15b) supporting at least an unwinding roller (16, 17;
- 116, 117) arranged to abut and guide the material portion (51) of the flexible and wrappable material (50) towards the load (100) during the wrapping thereof, said unwinding arm (15) being movable to bring near and/or move away said unwinding roller (16, 17;
- 116, 117) to/from the load (100) during the wrapping,
- wherein said supporting ring (13), by rotating in a first wrapping step, unwinds and draws the material portion (51) from said supplying unit (30), wraps with said unwinding arm (15) a first tract of the material portion (51) around the load (100), and wraps a second tract of the material portion (51) around said wrapping rollers (14;
- 114), and in a second wrapping step, said supporting ring (13) wraps with said unwinding arm (15) the second tract of the material portion (51), drawn and unwound from said wrapping rollers (14;
- 114), around the load (100) to complete the wrapping of the load, and
- wherein said unwinding arm (15) is movable between a first operative position (E1), where said unwinding roller (16, 17;
- 116, 117) is further from the load (100) to deflect the material portion (51) towards the load in the first wrapping step, and a second operative position (E2), where said unwinding roller (16, 17;
- 116, 117) is closer to the load (100) to deflect thereon a terminal flap (51b) of the material portion (51).
Dependencies are inferred from the claim text.