Claims
- 1. A method of surface winding a web on a core comprising
- advancing the leading edge of a web into a nip provided by upper and lower belt systems operating in opposite directions at different speeds,
- introducing a pre-glued core into said nip substantially simultaneously with said leading edge, and
- rotating said core about the axis thereof under the influence of and engagement with said belt systems to wind said web onto said core, moving said core perpendicular to its axis from start of wind to end of wind while maintaining said belt systems in diverging relation to accommodate the increase in diameter of the roll being wound, the engagement of said belt systems with said core constituting the sole means for rotating and moving said cores.
- 2. The method of claim 1 including moving said core through a hypocycloidal path in being introduced into said nip.
- 3. A surface winder for winding a web on a core comprising a frame defining a web path having an entering end and a discharge end, a first belt system on said frame extending along one side of said path and having a roll adjacent the path entering end,
- means on said frame cooperating with said first belt system roll in defining a core insertion nip,
- a second belt system on said frame extending along the other side of said path and being divergently related to said first belt system to accommodate build-up of web on the core,
- means for driving said first belt system faster than and in a direction opposite to said second belt system so as to rotate a core about its axis to wind a web thereon and advance a core perpendicular to its axis from start of wind to end of wind, said belt systems constituting the sole means for rotating and advancing said cores and
- means for introducing a preglued core into said path.
- 4. The winder of claim 3 in which said second belt system is equipped with a roll spaced from said first belt system roll toward said path discharge end.
- 5. The winder of claim 4 in which said nip defining means includes a second roll on said other side of said path.
- 6. The winder of claim 5 in which a stationary plate is mounted on said frame and positioned on the other side of said path between said second roll and said second belt system roll.
- 7. The winder of claim 6 in which an access opening is provided in said stationary plate, and in which web pinching means are mounted on said frame for projection through said stationary plate opening for transversely severing said web.
- 8. The winder of claim 7 in which said web pinching means is mounted on said frame and timed to engage said web for transverse severance when an upstream portion of said web is held against said stationary plate by said core.
- 9. The winder of claim 4 in which said nip defining means includes a stationary plate on the other side of said path.
- 10. The winder of claim 3 in which said second belt system is equipped with a roll adjacent said path entering end to constitute said nip defining means.
- 11. The winder of claim 3 in which means are provided for transversely severing said web in said path downstream of said core introducing means.
- 12. The winder of claim 3 in which means are provided for transversely severing said web upstream of said core introducing means.
- 13. A surface winder comprising a frame, a first belt system on said frame, a second belt system on said frame divergently related to said first belt system to provide a core receiving nip smaller than a wound roll discharge, means for driving one belt system faster than and in a direction opposite to the other so as to rotate a core about its axis to wind a web thereon and advance a core perpendicular to its axis from start of wind to end of wind, said belt system constituting the sole means for rotating and advancing said cores, and means operably associated with said belt systems for introducing into said nip a web and a pre-glued core.
- 14. The structure of claim 13 in which means are provided on said frame for adjusting the spacing between said belt systems.
- 15. The structure of claim 13 in which means are provided on said frame for adjusting the divergence between said belt systems.
- 16. The structure of claim 13 in which means are provided on said frame for adjusting the spacing between said belt systems to accommodate different size cores and for adjusting the divergence between said belt systems to accommodate different size wound rolls.
- 17. The structure of claim 13 in which means are provided on said frame for cantilever support of one belt system to facilitate belt system disassembly.
- 18. The structure of claim 17 in which said cantilever support means is equipped with adjustable spacing means for belt system adjustment while the winder is operating to produce a wound roll.
- 19. The structure of claim 13 in which one of said belt systems includes a porous belt.
- 20. The structure of claim 14 in which an apertured roll is mounted on said frame for applying vacuum to said porous belt.
- 21. The structure of claim 13 in which at least one of said belt system includes a plurality of belts arranged in side-by-side relation.
- 22. The structure of claim 13 in which each belt system is driven at a constant speed.
- 23. The structure of claim 13 in which a second nip is provided adjacent to but spaced from the first mentioned nip, said second nip being located upstream in the path of web travel from said first mentioned nip, and web severing means on said frame between said second and first mentioned nips.
- 24. The structure of claim 13 in which said web severing means includes a stationary plate and rotary pinching device to urge a core and web against said first belt system.
- 25. The structure of claim 24 in which said rotary pinching device includes a shaft and a plurality of arms on said shaft, said stationary plate having a plurality of apertures aligned with said arms, said arms being arranged to project through said apertures to press a core against said upper belt system.
Parent Case Info
This application is a continuation-in-part of my co-pending application Ser. No. 724,180 filed Apr. 17, 1985, now abandoned.
US Referenced Citations (15)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
724180 |
Apr 1985 |
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