Double-cylinder opener and relative process for opening and cleaning staple fiber by progressive action
AssigneeFratelli Marzoli & C. S.p.A.
InventorsEmilio Vezzoli, Giovanni Battista Pasini
Life of this patent
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Abstract
A double-cylinder opener for staple fiber being pneumatically transported in an air stream, the two cylinders being parallel and mutually offset, the fibers passing firstly about the first cylinder and then about the second cylinder with spiral motion, the two cylinders forming two beaters of different action, which rotate at different velocities and are provided with different spike population densities.
Claims26
A device for opening and cleaning fibres comprising first and second cylinders rotating about respective first and second horizontal axes disposed in substantially parallel relationship to each other, first and second spikes carried by said respective first and second cylinders to define therewith respective first and second fibre tuft opening beaters, said first and second beaters being housed in adjacent respective first and second cowlings having respective first and second grids, a fibre feed opening associated with one of said cowlings and a fibre discharge opening associated with another of said cowlings, said first and second beaters each having axially opposite first and second axial end portions, and said first and second beaters being in axially offset relationship to each other such that the first axial end portion of said first beater is in radially adjacent overlapping opposing relationship to the second axial end portion of said second beater thereby defining a substantially radial fibre transfer region between said beaters through which fibre flows from said first beater first axial end portion to said second beater second axial end portion.
A method of opening and cleaning fibres comprising the steps of introducing fibres into a first end of a substantially closed first volume, subjecting the fibres to a plurality of first rotational cleaning forces while advancing the fibres along the substantially closed first volume in a first direction toward a second end thereof, discharging trash removed from the fibres outwardly of a lower portion of the first closed volume, radially transferring the fibres from the first volume second end into a first end of a substantially closed second volume, subjecting the fibres to a plurality of second rotational cleaning forces while advancing the fibres along the substantially closed second volume in the first direction beyond the first closed volume second end toward a second end of said second closed volume, discharging trash removed from the fibres outwardly of a lower portion of the second closed volume, and discharging fibres from said second closed volume second end.
Dependencies are inferred from the claim text.