Claims
- 1. An automatic rewinding machine for receiving a web material for winding on cores to form logs, said web material being in continuous motion and having spaced apart lines of perforations, the machine comprising a first winding roller around which said web material is moved a second winding roller and a third winding roller; said first winding roller, said second winding roller and said third winding roller positioned for simultaneously contacting a log during at least a portion of the winding of the web material on a core; a core inserter; and a movable web material separator wherein said web material separator is constructed and arranged to move at a peripheral speed faster than a speed of the web material and said web material separator is adapted to periodically pinch said web material between said web material separator and said first winding roller when the peripheral speed of said web material separator and the speed at which the web material is moving are different, to thereby cause said web material to separate along a line of said lines of perforations at a point in said web material located between a newly inserted core and a nearly completed log.
- 2. The automatic rewinding machine of claim 1 further comprising a core introduction surface on which a new core is introduced.
- 3. The automatic rewinding machine of claim 2 wherein said core introduction surface comprises a plurality of strips.
- 4. The automatic rewinding machine of claim 2 wherein said core introduction surface is spaced apart from said web material feeder a distance which is less than an outside diameter of a new core.
- 5. The automatic rewinding machine of claim 1 further comprising a core introduction surface on which a new core is introduced, said core introduction surface being curved and extending from a point where a new core is released by said core inserter to a nip formed between said first winding roller and said second winding roller.
- 6. The automatic rewinding machine of claim 5 wherein said core introduction surfaced comprises a plurality of strips.
- 7. A surface winder for winding a web material on a series of cores comprising a frame defining a web material path having an entering end and a discharge end, a first winding roller on one side of said path adjacent said entering end, a second winding roller on an opposite side of said path spaced downstream from said entering end, a third winding roller on said one side of said path downstream of said first winding roller, a stationary surface on said frame on an opposite side of said path and spaced apart from said first winding roller to form a channel therebetween, a core inserter wherein the channel is disposed to accept a core from the core inserter and to provide that a core within the channel pushes the web material against said first winding roller along at least a portion of said path based on spacing between said stationary surface and said first winding roller, and an intermittently rotating web material separator having pads for pushing the web material against a surface of said first winding roller downstream of said core and being constructed and arranged to move at a speed faster than a speed of movement of the web material so that when the speed of said pads and the speed of the web material are different the pads are adapted to provide tension and separation of the web material at a point in the web material located between said core and a nearly completed log.
- 8. An automatic rewinding machine for receiving a web material for winding the web material on cores to form logs, said web material being in continuous motion at a web feeding speed and having spaced apart lines of perforations, the machine comprising a web material feeder, a winding cradle constructed and arranged to contact a log during at least a portion of the winding of the web material on a core, a core, inserter, and a movable web material separator constructed and arranged to move at a speed faster than said web feeding speed and is adapted to periodically contact said web material and modify the speed of the web material, with said contact by said separator being downstream of a newly inserted core, said separator thereby adapted to cause said web material to separate along a line of said lines of perforations at a point in said web material located between said newly inserted core and a nearly completed log.
- 9. An automatic rewinding machine for receiving a web material for winding the web material on cores to form logs, said web material being in continuous motion at a web feeding speed and having spaced apart lines of perforations, the machine comprising a first winding roller, a second winding roller, and a third winding roller; said first winding roller, said second winding roller and said third winding roller being positioned for simultaneously contacting a log during at least a portion of the winding of the web material on a core; a core inserter; and a movable web material separator constructed and arranged to move at a speed faster than said web feeding speed and is adapted to periodically contact said web material at a point downstream of a newly inserted core to modify the speed of the web material, said separator thereby adapted to cause said web material to separate along a line of said lines of perforations at a point in said web material located between said newly inserted core and a nearly completed log.
- 10. The automatic rewinding machine of claim 9 or 8 further comprising a core introduction surface on which a new core is introduced.
- 11. The automatic rewinding machine of claim 10 wherein said core introduction surface comprises a plurality of strips.
- 12. The automatic rewinding machine of claim 9 further comprising a core introduction surface, said core introduction surface being curved and extending from a point where a new core is released by said core inserter to a nip formed between said first winding roller and said second winding roller.
- 13. The automatic rewinding machine of claim 12 wherein said core introduction surface is apart from said first winding roller a distance less than an outside diameter of a new core.
- 14. An automatic rewinding machine for receiving a web material in continuous motion and for winding the web material on cores to form logs, the machine comprising a first winding roller around which said web material is moved, a second winding roller, and a third winding roller; said first winding roller, said second winding roller and said third winding roller positioned for simultaneously contacting a log during at least a portion of the winding of the web material on a core; a core inserter; and a movable web material separator which moves at a speed faster than a speed of said web material and said movable web material separator is adapted to coact with said first winding roller to pinch said web material and modify the speed of the web material and thereby separate said web material at a point in said web material located between a newly inserted core and a nearly completed log.
- 15. A method of winding a web material on a series of cores, the method comprising advancing said web material at a speed along a path around an outer surface of a first winding roller and onto a log being wound, introducing a core into a channel formed between said first winding roller and a surface spaced from said first winding roller, the core pinching the web material against said first winding roller at an upstream portion of said path, and periodically actuating a web material separator which is spaced from said first winding roller before and after web separation to pinch the web material against said first winding roller at a portion of said path downstream from where said core is introduced while said web material separator is moving at a speed faster than a speed of the web material to thereby cause said web material to separate at a point in the web material located between said core and a nearly completed log.
- 16. A method of winding a web material on a series of cores, said web material having longitudinally spaced transversely extending lines of perforations and the method comprising advancing said web material at a speed along a path around an outer surface of a first winding roller and onto a log being wound, introducing a core and bringing said core into contact with said web material driven around said first winding roller so that the core pinches the web material against said first winding roller at an upstream portion of said path, and periodically actuating a web material separator spaced from said first winding roller before and after web material separation to pinch said web material against said first winding roller at a portion of said path downstream from where said core is introduced while said web material separator is moving at a speed faster than a speed of the web material to thereby cause said web material to separate at a point in said web material located between said core and a nearly completed log.
Priority Claims (1)
Number |
Date |
Country |
Kind |
FI93A0058 |
Mar 1993 |
IT |
|
RELATED APPLICATION
“This application is a continuation-in-part of Ser. No. 08/501,072, filed Oct. 3, 1996, now U.S. Pat. No. 5,979,818, which is a continuation of application Ser. No. PCT/IT94/00031 filed Mar. 23, 1994.”
US Referenced Citations (11)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0 498 039 |
Aug 1992 |
EP |
0 524 158 |
Jan 1993 |
EP |
2 105 688 |
Mar 1983 |
GB |
Non-Patent Literature Citations (2)
Entry |
Brochure entitled “Hyperchange—Introducing the SR-920 Automatic Surface Rewinder from PCMC” published by Paper Converting Machine Company (1990) (2 pages). |
Article entitled “Tissue Converting in the 1990's” by Richard A. Seibert, Tissue Issues (Niagara Lockport) (6 pages). |
Continuations (1)
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Number |
Date |
Country |
Parent |
PCT/IT94/00031 |
Mar 1994 |
US |
Child |
08/501072 |
|
US |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
08/501072 |
Oct 1996 |
US |
Child |
09/377170 |
|
US |