Device for automatically changing reels of film
AssigneeAetna Group S.P.A.
InventorMauro Cere′
Life of this patent
Estimating the term…
Abstract
A device for changing reels of film on machines for wrapping products comprises a unit for substituting a finished reel with a new reel, the unit being mobile between a non-operating position in which it is distanced from an operating zone of a ring-shaped structure, and an operating position, in which it is close to the operating zone and to a wrapping unit; the unit comprises first means for detaching and picking up the finished reel from a support shaft, a magazine zone for at least one new or replacement reel which can be stably attached to the support shaft, second means for picking up the free end of film from the replacement reel and mobile along a path covering a preset film path, to allow film positioning close to a product to be wrapped.
Claims21
A device for automatically changing reels of film for wrapping products;
- the reels of film being used on machines for wrapping products on pallets, the machines comprising a ring structure, means to move the ring structure vertically in both directions along a support column;
- the ring being equipped with a product wrapping unit which is mobile along the ring to allow the spiral wrapping of the product;
- the product wrapping unit comprising at least a reel support shaft, one pair of film pre-stretching rollers located close to the shaft, and at least one feed roller designed to define a preset film path from the reel to the product to be wrapped, the device comprising, at a base of the machine, a unit which replaces a finished reel with a new reel, the unit which replaces a finished reel with a new reel, movable between a non-operating position in which it is distanced from a ring operating zone, and an operating position in which it is close to the operating zone and the wrapping unit, and comprising:
- first pick up means which also detach the finished reel from the shaft;
- a magazine zone with at least one new or replacement reel which can be stably attached to the support shaft;
- second pick up means for the free end of the film from the replacement reel, being mobile along a path which covers the preset film path, allowing the film to be positioned close to the product to be wrapped.
An apparatus for wrapping products on a pallet with film dispensed from a reel, said apparatus comprising:
- a ring structure;
- a support column;
- means for moving the ring structure vertically in first and second opposite directions along the support column;
- a product wrapping unit movably connected to the ring structure and mobile along the ring to allow the spiral wrapping of the product;
- a reel support shaft;
- film pre-stretching rollers located close to the reel support shaft;
- at least one feed roller defining a preset film path from an associated reel of film to the product to be wrapped;
- a reel replacing unit for automatically changing an associated reel of film, said reel replacing unit comprising:
- first pick up means that detach an associated finished reel from the reel support shaft;
- a magazine zone for holding at least one associated replacement reel to be attached to the reel support shaft;
- second pick up means for holding and positioning an associated free end of film from the associated replacement reel;
- and,
- means for moving the reel replacement unit between a non-operating position in which the reel replacement unit is spaced from a ring operating zone, and an operating position in which the reel replacement unit is adjacent the ring operating zone.
Dependencies are inferred from the claim text.