Device for gluing the tail end of a reel of web material with vacuum systems for opening the tail end
AssigneeFabio Perini S.p.A.
InventorGuglielmo Biagiotti
Life of this patent
Estimating the term…
Abstract
A device for gluing the tail end (LF) of a reel (L) of wound web material comprises: conveying means (5, 21) for moving the reel; unwinding means (7, 9) for unwinding the tail end of the web material; a dispenser (11) of glue (C) for applying the glue to the reel (L); and means for rewinding the tail end after the glue (C) has been applied. The unwinding means comprise a vacuum unit (51, 53) which detaches and unwinds the tail end of the web material from the reel by depression.
Claims32
A device for gluing a tail end of a reel of wound web material comprising:
- conveying means for moving the reel along a path in a conveying direction;
- unwinding and positioning means for unwinding and positioning the tail end of the web material;
- a dispenser of glue for applying glue to a portion of the web material;
- and means for rewinding the tail end after the glue has been applied;
- wherein said unwinding and positioning means comprise a vacuum space leading down underneath the path of the reel which generates a vacuum around the reel and serves to detach and unwind the tail end of the web material from the reel, as well as position the tail end before the glue is applied to the wound web material on said reel by means of the glue dispenser.
A method for gluing a tail end of wound web material to form a reel, in which the tail end is detached from the reel and unwound from the reel to a predetermined length;
- glue is applied to a portion of the wound web material in order to glue the tail end to the wound web material of the reel;
- and the tail end is rewound onto the reel, wherein the tail end is detached and unwound from the reel by the generation of a vacuum in an area around the reel.
A device for gluing a tail end of a reel of wound web material comprising:
- conveying means for moving the reel along a path in a conveying direction;
- unwinding and positioning means for unwinding and positioning the tail end of the web material;
- a dispenser of glue for applying glue to a portion of the web material still wound on the reel;
- and means for rewinding the tail end after the glue has been applied on the reel, wherein said unwinding and positioning means comprise a vacuum space extending downwards from a reel conveying surface, said vacuum space providing a vacuum around the reel which serves to detach and unwind the tail end of the web material from the reel, and the unwinding and positioning means partially drawing said tail end out of said vacuum space for positioning the tail end before applying glue to said reel by means of the glue dispenser.
A device for gluing a tail end of a reel of wound web material comprising:
- conveying means for moving the reel along a path in a conveying direction;
- unwinding and positioning means for unwinding and positioning the tail end of the web material;
- a dispenser of glue for applying glue to a portion of the web material still wound on the reel;
- and means for rewinding the tail end after the glue has been applied on the reel, wherein said unwinding and positioning means comprise a vacuum space extending downwards from a reel conveying surface, said vacuum space providing a vacuum around the reel which serves to detach and unwind the tail end of the web material from the reel as well as position the tail end before applying glue to said reel by means of the glue dispenser, and wherein said vacuum space is arranged upstream of said glue dispenser, said conveying means causing the reel to roll over said glue dispenser, said glue dispenser and said vacuum space being arranged side-by-side.
A method for gluing a tail end of wound web material to form a reel in which the tail end is detached from the reel and unwound from the reel to a predetermined length;
- glue is applied to a portion of the wound web material in order to glue the tail end to the wound web material of the reel;
- and the tail end is rewound onto the reel, wherein the tail end is detached and unwound from the reel and drawn into a vacuum space by action of a vacuum provided by the vacuum space in an area around the reel and the tail end is further positioned by partially drawing the tail end out of said vacuum space, and the glue is applied on the material still wound on the reel and the reel is made to roll over a glue dispensing slit so that the glue is applied on the reel and the tail end is rewound on the reel.
A method for gluing a tail end of wound web material to form a reel, in which the tail end is detached from the reel and unwound from the reel to a predetermined length;
- glue is applied to a portion of the wound web material in order to glue the tail end to the wound web material of the reel;
- and the tail end is rewound onto the reel, wherein the tail end is detached and unwound from the reel and drawn into a vacuum space by action of a vacuum provided by the vacuum space in an area around the reel, and the glue is applied on the material still wound on the reel and the reel is made to roll over a glue dispensing slit arranged in said reel conveying surface so that glue is applied on the reel and the tail end is recalled from the vacuum space and rewound on the reel.
Dependencies are inferred from the claim text.