Automatic and continuous unwinder device for supplying web-like material from reels
First Claim
1. An unwinder device for unwinding reels of web material comprising an unwinding station with unwinding members for unwinding said reels and a splicing device for splicing together web materials coming from a first reel and from a second reel, wherein in said unwinding station at least two supports are arranged for respective reels of web material;
- each support is associated with a respective one of said unwinding members which supply rotary motion to a reel placed on a respective support of said supports, said supports being constructed and arranged to simultaneously support two reels being unwound, during at least one phase of unwinding, and each of said supports being arranged and constructed for loading a new reel in an engagement position, supporting the new reel during unwinding and discharging an expired reel in a release position;
wherein the splicing device is arranged and controlled for splicing together a first web material unwound from the first reel carried by a first support of said supports and a second web material unwound from the second reel carried by a second support of said supports when peripheral speeds of said first reel and said second reel are substantially common; and
wherein each support of said supports being moveable in a vertical direction from said engagement position to said release position, said release position being above said engagement position.
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0 Petitions
Accused Products
Abstract
The unwinder device includes an unwinding station (7), with unwinding members for unwinding reels and a splicing device (151) for splicing together web-like materials (N1 and N2) coming from a first reel (B1) and from a second reel (B2). At least two supports (49, 51) are arranged in the unwinding station for the respective reels of web-like material, associated with respective unwinding members (83, 99). The supports are constructed and arranged to simultaneously support two reels being unwound, during at least a phase of the unwinding, and each of said supports is able and constructed to load a new reel in an engagement position, support it during the unwinding and unload it in a release position.
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Citations
55 Claims
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1. An unwinder device for unwinding reels of web material comprising an unwinding station with unwinding members for unwinding said reels and a splicing device for splicing together web materials coming from a first reel and from a second reel, wherein in said unwinding station at least two supports are arranged for respective reels of web material;
- each support is associated with a respective one of said unwinding members which supply rotary motion to a reel placed on a respective support of said supports, said supports being constructed and arranged to simultaneously support two reels being unwound, during at least one phase of unwinding, and each of said supports being arranged and constructed for loading a new reel in an engagement position, supporting the new reel during unwinding and discharging an expired reel in a release position;
wherein the splicing device is arranged and controlled for splicing together a first web material unwound from the first reel carried by a first support of said supports and a second web material unwound from the second reel carried by a second support of said supports when peripheral speeds of said first reel and said second reel are substantially common; and
wherein each support of said supports being moveable in a vertical direction from said engagement position to said release position, said release position being above said engagement position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
- each support is associated with a respective one of said unwinding members which supply rotary motion to a reel placed on a respective support of said supports, said supports being constructed and arranged to simultaneously support two reels being unwound, during at least one phase of unwinding, and each of said supports being arranged and constructed for loading a new reel in an engagement position, supporting the new reel during unwinding and discharging an expired reel in a release position;
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46. A method for continuously feeding a web material from reels being unwound to a processing line comprising:
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placing a first reel in a loading position, engaging said first reel on a first support associated with a first unwinding member which brings and keeps said first reel in rotation, supplying a first web material from said first reel to the processing line, moving along a vertical direction said first support and said first reel from said loading position towards an unloading position distinct from said loading position and arranged above said loading position; when said first reel has been removed from said loading position, placing a second reel with a second web material in said loading position, engaging said second reel on a second support associated with a second unwinding member, making said second reel rotate by means of said second unwinding member and unwinding an initial portion of the second web material from the second reel, splicing together the first web material and the second web material unwound from said first reel and said second reel when peripheral speed of said first reel and said second reel are substantially common, said first web material and said second web material being brought into reciprocal contact when said first reel and said second reel rotate at peripheral speeds that are substantially common; when said first web material has been spliced to said second web material, unloading said first reel from the first support, and moving along a vertical direction said second support towards the unloading position and bringing back said first support to said loading position for engaging a successive reel. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification