Core slip drum
AssigneeCoil Pro Machinery, Inc.
InventorJeffrey A. Gagnon
Life of this patent
Estimating the term…
Abstract
A method and apparatus for winding strip material onto a drum is disclosed. Friction between the surface of the drum and the strip material wound there around, as well as friction between adjacent reels of strip material, may be selectively controlled by controlling the provision of a fluid bed between the strip material and the surface of the drum. Control over this friction allows the individual strips to slip to different degrees relative to the drum on which they are wound. The different amounts of slip permit the strips to be wound on the drum with uniform tension and at a uniform take up speed.
Claims28
An apparatus for winding strips of material comprising:
- a drum adapted to rotate about a longitudinal axis, said drum having a winding surface;
- a plurality of openings provided in the drum winding surface;
- and
- a means for supplying pressurized fluid to the openings.
An apparatus for winding strips of material fed to the apparatus from a slitting machine, said apparatus comprising:
- a rotary arbor;
- a drum having an interior and a winding surface, said drum removably mounted on the rotary arbor;
- a plurality of openings providing communication between the drum interior and the drum winding surface;
- a pressurized fluid source;
- and
- at least one pressurized fluid passage connecting the pressurized fluid source to the openings.
A method of controlling the amount of friction between the winding surface of a drum and a plurality of material strips wound around said drum, said method comprising the steps of:
- providing a core insert around the drum winding surface;
- winding a strip of material around the core insert;
- and
- providing fluid between the winding surface and the core insert.
A method of reducing the amount of friction between the winding surface of a drum and a plurality of material strands wound around said drum, said method comprising the steps of:
- winding at least two strands of material around the drum winding surface;
- and
- supplying above ambient pressurized fluid to the winding surface.
Dependencies are inferred from the claim text.