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US 11,286,585 B2Granted
Method and apparatus for processing fibers
AssigneeTrüTzschler Group SE
InventorsDominik Küsters, Pedro Corrales-Arregui, Christoph Färber
Life of this patent
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Abstract
A process and an installation for producing a yarn in accordance with an airjet-spinning method. A carded fibre sliver is subjected to more than three-fold drawing without levelling at a carding machine and deposited in a can (C). At least nine fibre slivers are fed draftfree from cans (C) to a draw frame and subjected to at least 8.5-fold drawing to form a fibre sliver and deposited in a can (C1). The fibre sliver in the cans (C1) is then fed to a spinning station of an airjet-spinning machine.
Claims16
A process for processing fibres, comprising steps of:
- producing on a carding machine a carded fibre sliver;
- subjecting the carded fibre sliver to preliminary drawing in an integrated draw frame at the carding machine to produce a pre-drawn fibre sliver;
- depositing the pre-drawn fibre sliver in respective ones of a plurality of first cans;
- feeding draftfree at least 9 to 12 of the pre-drawn fibre slivers from a corresponding number of the first cans to a second draw frame and drawing the at least 9 to 12 pre-drawn fibre slivers on the second draw frame to form a drawn fibre sliver, wherein the number of first cans from which the at least 9 to 12 fibre slivers are fed draftfree to the second draw frame corresponds to the number of pre-drawn fibres being fed to the second draw frame;
- depositing the drawn fibre sliver in respective ones of a plurality of second cans;
- and
- feeding the drawn fibre sliver from the respective ones of the second cans to a spinning station of an airjet-spinning machine.
4 more elements
An installation for producing a yarn in accordance with an airjet-spinning method, comprising:
- a carding machine for producing fibre sliver;
- an integrated draw frame and a can changer arranged at the carding machine for preliminary drawing of the fibre sliver without levelling and depositing the preliminary drawn fibre sliver in respective ones of a plurality of cans arranged by the can changer;
- a single drawing unit in a form of an autoleveller drawing unit arranged to receive the preliminary drawn fibre sliver from a respective one of the plurality of cans;
- and
- a driven creel and an airjet spinning machine arranged downstream of the single drawing unit.
2 more elements
A process for processing fibres, comprising steps of:
- producing on a carding machine a carded fibre sliver,
- subjecting the carded fibre sliver to preliminary drawing to produce a pre-drawn fibre sliver, wherein the subjecting step includes effecting the preliminary drawing of the fibre sliver at the carding machine without levelling;
- depositing the pre-drawn fibre sliver in respective ones of a plurality of second cans;
- feeding draftfree at least 9 to 12 of the pre-drawn fibre slivers from a corresponding number of the first cans to a second draw frame and drawing the at least 9 to 12 pre-drawn fibre slivers on the draw frame to form a drawn fibre sliver;
- depositing the drawn fibre sliver in respective ones of a plurality of second cans;
- and
- feeding the drawn fibre sliver in respective ones of the second cans to a spinning station of an airjet-spinning machine.
4 more elements
A process for processing fibres, comprising steps of:
- producing at least 80 kg/h of carded fibre sliver on a carding machine;
- subjecting the carded fibre sliver to preliminary drawing to produce a pre-drawn fibre sliver;
- depositing the drawn fibre sliver in respective ones of a plurality of second cans;
- feeding draftfree at least 9 to 12 of the pre-drawn fibre slivers from a corresponding number of the first cans to a second draw frame and drawing the at least 9 to 12 pre-drawn fibre slivers on the draw frame to form a drawn fibre sliver;
- depositing the drawn fibre sliver in respective ones of a plurality of second cans;
- and
- feeding the drawn fibre sliver in respective ones of the second cans to a spinning station of an airjet-spinning machine.
4 more elements
A process for processing fibres, comprising steps of:
- producing on a carding machine a carded fibre sliver at a rate of at least 100 m/min;
- subjecting the carded fibre sliver to preliminary drawing to produce a pre-drawn fibre sliver;
- depositing the drawn fibre sliver in respective ones of a plurality of first cans;
- buffering the carded fibre sliver at the carding machine during a change of one of the first cans at the carding machine to another one of the first cans;
- during the change of the first cans at the carding machine, continuing to produce the carded fibre sliver in the carding machine at the rate of at least 100 m/min;
- feeding draftfree at least 9 to 12 of the pre-drawn fibre slivers from a corresponding number of the first cans to a second draw frame and drawing the at least 9 to 12 pre-drawn fibre slivers on the draw frame to form a drawn fibre sliver;
- depositing the drawn fibre sliver in respective ones of a plurality of second cans;
- and
- feeding the drawn fibre sliver in respective ones of the second cans to a spinning station of an airjet-spinning machine.
6 more elements
Dependencies are inferred from the claim text.