Unwinder device for reels of web-like material with temporary accumulator members for the material unwound in the phase of reel substitution and relative method
First Claim
1. An unwinder device for unwinding reels of web material comprisingunwinding members for simultaneously unwinding a first reel and a second reel,a splicing device for splicing together a first web material coming from said first reel and a second web material coming from said second reel, said splicing device comprising two co-acting opposing splicing members,at least one accumulator member for accumulating said second web material supplied by said second reel before splicing to the first web material supplied by said first reel,wherein said accumulator member is placed, along a path of the second web material, downstream of said splicing device and downstream of a zone in which said splicing between said first web material and said second web material starts.
1 Assignment
0 Petitions
Accused Products
Abstract
The unwinder device comprises: unwinding members for simultaneously unwinding a first reel (B1) and a second reel (B2), a splicing device (151) for splicing together a first web-like material (N1) coming from said first reel (B1) and a second web-like material (N2) coming from said second reel (B2), an accumulator member (24, 200) for accumulating web-like material (N2) supplied from said second reel (B2) before splicing to the web-like material (N1) supplied from said first reel (B1).
13 Citations
30 Claims
-
1. An unwinder device for unwinding reels of web material comprising
unwinding members for simultaneously unwinding a first reel and a second reel, a splicing device for splicing together a first web material coming from said first reel and a second web material coming from said second reel, said splicing device comprising two co-acting opposing splicing members, at least one accumulator member for accumulating said second web material supplied by said second reel before splicing to the first web material supplied by said first reel, wherein said accumulator member is placed, along a path of the second web material, downstream of said splicing device and downstream of a zone in which said splicing between said first web material and said second web material starts.
-
14. An unwinder device for unwinding reels of web material comprising
unwinding members for simultaneously unwinding a first reel and a second reel, a splicing device for splicing together a first web material coming from said first reel and a second web material coming from said second reel, at least one accumulator member for accumulating said second web material supplied by said second reel before splicing to the first web material supplied by said first reel, wherein said accumulator member is placed, along a path of the second web material, downstream of a zone in which said splicing between said first web material and said second web material starts, and wherein said accumulator member is reversible and passes back accumulated web material, after the first web material and the second web material are spliced together.
-
15. An unwinder device for unwinding reels of web material comprising
unwinding members for simultaneously unwinding a first reel and a second reel, a splicing device for splicing together a first web material coming from said first reel and a second web material coming from said second reel, at least one accumulator member for accumulating said second web material supplied by said second reel before splicing to the first web material supplied by said first reel, wherein said accumulator member is placed, along a path of the second web material, downstream of a zone in which said splicing between said first web material and said second web material starts, and further comprising a shuttle mobile between at least one loading station and an unwinding station for transferring reels from said loading station to said unwinding station, and wherein said accumulator member is carried by said shuttle.
-
18. A method for unwinding reels of web material comprising
unwinding a first web material from a first reel and supplying said first web material to a production line, making a second reel rotate and starting to unwind a second web material from said second reel; -
accumulating said second web material in an accumulation zone before splicing, splicing by two opposing and co-acting splicing members said second web material to said first web material and supplying said second web material to said production line, wherein said second web material is accumulated in said accumulation zone, before the splicing, by an accumulator member arranged downstream of said splicing members. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
-
26. A method for unwinding reels of web material comprising
unwinding a first web material from a first reel and supplying said first web material to a production line, making a second reel rotate and starting to unwind a second web material from said second reel; -
accumulating said second web material in an accumulation zone before splicing, splicing said second web material to said first web material and supplying said second web material to said production line, wherein said second web material is accumulated in said accumulation zone before splicing, said accumulation zone being arranged downstream of a zone in which said splicing starts, and wherein after the splicing of said second web material to said first web material, the spliced web material accumulated in said accumulation zone is retrieved and fed to said production line.
-
-
27. A method for unwinding reels of web material comprising
unwinding a first web material from a first reel and supplying said first web material to a production line, making a second reel rotate and starting to unwind a second web material from said second reel; -
accumulating said second web material in an accumulation zone before splicing, splicing said second web material to said first web material and supplying said second web material to said production line, wherein said second web material is accumulated in said accumulation zone before splicing, said accumulation zone being arranged downstream of a zone in which said splicing starts, wherein said second web material is temporarily wound around a roll, and wherein said roll is made to rotate in a winding sense for temporarily accumulating said second web material and, after the splicing of the first web material and the second web material, direction of rotation of said roll is inverted.
-
-
28. A method for unwinding reels of web material comprising
unwinding a first web material from a first reel and supplying said first web material to a production line, making a second reel rotate and starting to unwind a second web material from said second reel; -
accumulating said second web material in an accumulation zone before splicing, splicing said second web material to said first web material and supplying said second web material to said production line, wherein said second web material is accumulated in said accumulation zone before splicing, said accumulation zone being arranged downstream of a zone in which said splicing starts, wherein said second web material is temporarily wound around a roll, and wherein a portion of the second web material temporarily accumulated in said zone is made to adhere to the first web-like material when said second web material is retrieved.
-
-
29. An unwinder device for unwinding reels of web material comprising
unwinding members for simultaneously unwinding a first reel and a second reel, a splicing device for splicing together a first web material coming from said first reel and a second web material coming from said second reel, at least one accumulator member for accumulating said second web material supplied by said second reel before splicing to the first web material supplied by said first reel, wherein said accumulator member is placed, along a path of the second web material, downstream of a zone in which said splicing between said first web material and said second web material starts, and wherein said accumulator member is constructed and arranged to retain accumulated web after said splicing.
-
30. A method for unwinding reels of web material comprising
unwinding a first web material from a first reel and supplying said first web material to a production line, making a second reel rotate and starting to unwind a second web material from said second reel; -
accumulating said second web material in an accumulation zone before splicing, splicing said second web material to said first web material and supplying said second web material to said production line, wherein said second web material is accumulated in said accumulation zone before splicing, said accumulation zone being arranged downstream of a zone in which said splicing starts, and wherein accumulated web material is retained, after said splicing, in said accumulation zone.
-
Specification