APPARATUS FOR THE FIBRE-SORTING OR FIBRE-SELECTION OF A FIBRE BUNDLE COMPRISING TEXTILE FIBRES, ESPECIALLY FOR COMBING

• US 20090000072A1
• Filed: 06/27/2008
• Published: 01/01/2009
• Est. Priority Date: 06/29/2007
• Status: Active Grant

• Current Assignee: Trã¼Tzschler GmbH & Company KG
• Original Assignee: Trã¼Tzschler GmbH & Company KG
• Inventors: Saeger, Nicole, Bossmann, Johannes, Schmitz, Thomas
• Granted Patent: US 7,941,901 B2
• Time in Patent Office: Days
• US Class Current: 19/115.R
• CPC Class Codes: D01G 19/08 Feeding apparatus
• CPC Class Codes: D01G 19/16 Nipper mechanisms

Abstract

In an apparatus for fibre-sorting or fibre-selection of a fibre bundle comprising textile fibres, especially for combing, the fibre bundle is supplied to a fibre-sorting device, clamping devices are provided, which clamp the fibre bundle at a distance from its free end, and mechanical device is present, which generates a combing action from the clamping site to the free end of the fibre bundle. To increase productivity in a simple manner and obtain an improved combed sliver downstream of the supply device there are at least two rotatably mounted rollers rotating rapidly without interruption, the combing device are associated with a said roller, and an arrangement for optimum feed and/or positioning of the fibre material to be combed is associated with the combing device.

Claims

1. An apparatus for the fibre-sorting or fibre-selection of a fibre bundle comprising textile fibres having:

a fibre-sorting device having clamping devices for clamping a fibre bundle;

a supply device for supplying the fibre bundle to the fibre-sorting device; and

at least one mechanical device for generating a combing action in order to loosen and remove non-clamped constituents from the fibre bundle;

wherein the fibre-sorting device comprises, arranged downstream of the supply device, at least first and second rotatably mounted rollers that, in use, rotate rapidly without interruption, at least one said second roller having clamping devices distributed spaced apart in the region of its periphery, the device for generating a combing action is associated with said second roller, and a positioning arrangement for optimum feed and/or positioning of the fibre material to be combed is associated with the at least one device for generating a combing action.

2. An apparatus according to claim 1, in which the positioning arrangement comprises a guide device for feed and/or positioning.

3. An apparatus according to claim 2, in which the guide device is a pneumatic guide device.

4. An apparatus according to claim 3, in which the guide device comprises a suction device.

5. An apparatus according to claim 3, in which the guide device comprises a blowing device.

6. An apparatus according to claim 2, in which a mechanical guide device is present.

7. An apparatus according to claim 1, in which the number of combing elements is fewer than the number of clamping elements with which the combing elements co-operate.

8. An apparatus according to claim 1, in which additional elements for optimum fibre bundle feed, are integrated in said second roller.

9. An apparatus according to claim 1, in which on feed to the device for combing the fibre bundle is stationary in relation to the clamping site on said second roller.

10. An apparatus according to claim 1, in which the combing device has a plurality of combing elements for combing the fibre bundle and, to achieve an optimum combing result, the directions of rotation of the combing elements and the speed ratios can be selected to be different.

11. An apparatus according to claim 1, in which there is present a stripper element, a cover element, or a holding-down element or the like, which is usable for adjusting the useful combing length in a defined manner.

12. An apparatus according to claim 1, in which, for optimum feed of the fibre bundle to one or more combing element of the combing device, an air jetting from the second roller is effected.

13. An apparatus according to claim 12, in which the air jetting pressure and/or the air jetting angle is adjustable.

14. An apparatus according to claim 12, in which the second roller comprises nozzles for effecting said air jetting, the position of the nozzles being adjustable.

15. An apparatus according to claim 1, in which, for optimum feed of the fibre bundle to a combing element of the combing device, an externally mounted nozzle arrangement for emitting an air jet is present.

16. An apparatus according to claim 15, in which the air jetting pressure and/or the air jetting angle and/or the position of the nozzles of the externally mounted nozzle arrangement are adjustable.

17. An apparatus according to claim 1, in which the second roller comprises as said clamping devices a multiplicity of nippers, an optimum feed of the fibre bundle to combing elements of the combing device being effected by the nipper geometry of the second roller nippers, wherein a mechanical guidance is present.

18. An apparatus according to claim 1, in which there are guide elements at the periphery of the second roller and an optimum feed of the fibre tuft to the combing element is effected by the guide elements, wherein a mechanical guidance is implemented.

19. An apparatus according to claim 18, in which the spacing and/or the position of the guide elements with respect to the second roller is adjustable.

20. An apparatus according to claim 18, in which guide elements retractable into the second roller during the combing process are present.

21. An apparatus according to claim 1, in which, for optimum feed of the fibre bundle to a combing element of the combing device, the combing element and/or a clothing thereof has air outlet openings and is connected to a source of reduced pressure.

22. An apparatus according to claim 21, in which the reduced pressure is adjustable.

23. An apparatus according to claim 21, in which the combing element is continuously acted upon by suction.

24. An apparatus according to claim 21, in which the combing element is acted upon by suction on a timed basis.

25. An apparatus according to claim 1, in which said at least first and second rotatably mounted rollers comprise a turning rotor as said first roller and a combing rotor as said second roller, the turning rotor and the combing rotor having opposite directions of rotation.

26. An apparatus according to claim 1, in which, for the suction of the supplied bundles, at least one suction device is associated with the clamping devices in the region of the take-up of the fibre bundle from the supply device) to the to the first roller and/or in the region of the transfer of the fibre material from the first roller to the second roller.