Bundle-wrapping feedstock
Disclosed is a feedstock device ( 1 ) to deliver film ( 2 ) to a bundle-wrapping machine and including, on the one hand, at least one reel ( 3 ) to receive a roll ( 4 ) of the film ( 2 ) to be delivered, and, on the other hand, a joining unit ( 5 ) to attach the next film ( 2 ) to the film ( 2 ) that is currently being fed. This device includes a support ( 6 ) on which the at least one reel ( 3 ) is mounted, with the support ( 6 ) being mobile in relation to the joining unit ( 5 ) to bring the delivered film ( 2 ) to the latter. The invention also has as its object a machine and a corresponding method.
1. A feedstock device ( 1 ) to deliver film ( 2 ) to a bundle-wrapping machine, the feedstock device comprising:
at least one reel ( 3 ) to receive a roll ( 4 ) of said film ( 2 ) to be delivered;
a joining means ( 5 ) to attach a next film ( 2 ) to the film ( 2 ) that is currently being fed; and
a support ( 6 ) on which the at least one reel ( 3 ) is mounted, said support ( 6 ) being mobile in relation to the joining means ( 5 ) to bring the delivered film ( 2 ) to the joining means ( 5 ), and said support ( 6 ) with the at least one reel ( 3 ) is a removable and interchangeable.
2. The feedstock device according to claim 1 , wherein the feedstock device comprises at least two reels ( 3 ) mounted on the support ( 6 ), so that the film ( 2 ) from a first reel ( 3 ) can be delivered by the feedstock device ( 1 ) to the bundle-wrapping machine, with the film ( 2 ) from a second reel ( 3 ) being on standby to replace the film ( 2 ) from first reel ( 3 ).
3. The feedstock device according to claim 2 , wherein the feedstock device ( 1 ) is such that in one position of the support ( 6 ), both the delivered film ( 2 ) and the standby film ( 2 ) are in the area of the joining means ( 5 ), to be joined to one another.
4. The feedstock device according to claim 3 , wherein the first reel ( 3 ) and/or the second reel ( 3 ) comprises a spindle ( 7 ) onto which a roll ( 4 ) of film ( 2 ) can be slipped, a first roller ( 8 ) to guide the film ( 2 ) from said roll ( 4 ) when the film ( 2 ) is delivered by the feedstock device ( 1 ), as well as a holding means ( 9 ) to hold a free portion of the film ( 2 ) when the film ( 2 ) is on standby.
5. The feedstock device according to claim 3 , wherein the feedstock device comprises a second roller ( 10 ), stationary, against which the film ( 2 ) that is currently being fed travels.
6. The feedstock device according to claim 2 , wherein the first reel ( 3 ) and/or the second reel ( 3 ) comprises a spindle ( 7 ) onto which a roll ( 4 ) of film ( 2 ) can be slipped, a first roller ( 8 ) to guide the film ( 2 ) from said roll ( 4 ) when the film ( 2 ) is delivered by the feedstock device ( 1 ), as well as a holding means ( 9 ) to hold a free portion of the film ( 2 ) when the film ( 2 ) is on standby.
7. The feedstock device according to claim 2 , wherein the feedstock device comprises a second roller ( 10 ), stationary, against which the film ( 2 ) that is currently being fed travels.
8. The feedstock device according to claim 1 , wherein the at least one reel ( 3 ) comprises a spindle ( 7 ) onto which a roll ( 4 ) of film ( 2 ) can be slipped, a first roller ( 8 ) to guide the film ( 2 ) from said roll ( 4 ) when the film ( 2 ) is delivered by the feedstock device ( 1 ), as well as a holding means ( 9 ) to hold a free portion of the film ( 2 ) when the film ( 2 ) is on standby.
9. The feedstock device according to claim 8 , wherein the feedstock device comprises a second roller ( 10 ), stationary, against which the film ( 2 ) that is currently being fed travels.
10. The feedstock device according to claim 1 , wherein the feedstock device comprises a second roller ( 10 ), stationary, against which the film ( 2 ) that is currently being fed travels.
11. A machine for producing units wrapped in a film ( 2 ), configured to receive said units from a conveying means with the units being wrapped in successive sections of film ( 2 ), and for the feeding of film ( 2 ), at least one feedstock device ( 1 ) according to claim 1 .
12. The machine according to claim 11 , wherein the machine comprises attachment means ( 12 ) to attach to the film ( 2 ) provided by the feedstock device ( 1 ) another film ( 2 ) provided by another source of film ( 2 ).
13. A method of feeding film ( 2 ) for a bundle-wrapping station, from successive rolls ( 4 ), comprising:
providing a first film ( 2 ) of a first roll ( 4 ) for the bundle-wrapping operation,
bonding to the first film ( 2 ) a second film ( 2 ) of a second roll ( 4 ),
providing the film ( 2 ) from the second roll ( 4 ), and
loading a mobile support ( 6 ) comprising numerous full rolls ( 4 ) to ensure successive movement of the numerous full rolls ( 4 ) up to a joining means ( 5 ); wherein
the second roll ( 4 ) is moved up to the area of the joining means ( 5 ) so that the second film ( 2 ) is bonded there to the first film ( 2 ).
14. The method according to claim 13 , wherein the roll ( 4 ) that is currently being fed and the next roll ( 4 ) are moved simultaneously so that their respective film ( 2 ) is brought to the joining means ( 5 ) to be joined there to one another.