DE2250831A1 - OPEN-END SPINNING DEVICE - Google Patents

Description

Patent Attorneys Dlpl.-ing. W. Scherrmann Dr.-Ing. R. Roger

73 Esslingen (Neckar), Fabrikstrasse 9, Postfach 348 October 16, 1972

phone

PA 21 rÜnae Stuttgart (0711) 354539

359019

Telegrams patent protection Essllngennedcar

Platt International Limited, Hartford Works, Oldham, Lancashire, UK

Open-end spinning device

The invention relates to an open-end spinning device with a circumferential one having a pas-collecting surface Spinning rotor, continuously on its fiber dumpling surface discrete fibers can be deposited, which are then continuously pinned to the end of a continuously withdrawn Yarn are removed again, the spinning rotor being arranged concentrically to its axis of rotation and two surface areas merging into one another in an area of maximum diameter forming the fiber collecting area containing surface.

It has been found to be very important in making a good high-speed yarn is to precisely control the yarn immediately after formation. The invention is therefore based on the object to create an open-end spinning device of the type mentioned, which enables the production of open-end spun High speed yarn permitted.

309817/0816

The open-end spinning device is used to solve this problem according to the invention characterized in that it is one of a yarn outlet via one of the points containing maximum diameter of the fiber collecting surface Surface of a yarn discharge tube extending into a yarn inlet opening within the spinning rotor which carries a flange in the region of the end associated with the yarn inlet opening, which one outwards and onto the fiber collecting surface towards you having extending surface which has a guide for the fibers removed from the fiber collecting surface in their Forms piecing at the end of the yarn.

It is useful here if the yarn discharge tube is arranged coaxially to the axis of rotation of the spinning rotor; In addition, it is advantageous if the yarn discharge tube faces outwards in the region of the yarn inlet opening having widening neck part which merges into the guide surface. The Ilalteil can with a number be formed by grooves.

Further advantageous features and properties of the new open-end spinning device emerge from the The following description of exemplary embodiments and from the subsequent subclaims.

3098 17/0816

In the drawing are 'two Ätisleitüngsbeispiele the Subject of the invention shown. Show it:

Fig. 1 An open-end spinning device according to Invention in a first embodiment in axial section in a side view and

FIG. 2 shows an open-end spinning device according to FIG

• Invention in a second embodiment in axial section in a side view.

In the device illustrated in FIG. 1, a spinning rotor 1 is fastened in a rotationally fixed manner on a drive shaft 2, which in turn is rotatably mounted in a bearing, not shown. The spinning rotor 1 lies in a cavity 3 a rotor housing 4, which is under negative pressure via a suction channel 5 »The spinning rotor 1 is open at the top and completed below; it has an inner surface arranged concentrically to the axis of rotation of the rotor. A conical upper part 6 of this surface protrudes from the top of the rotor downwards and outwards, while a conical lower part 7 of this surface · extends upwards and outwards from the bottom of the rotor, the two conical parts 6.7 merge into one another in an area of maximum diameter. In this area maximum diameter is a fiber collecting groove 8, which is arranged concentrically to the axis of rotation of the spinning rotor.

The cavity 3 is closed by a closure member 9, which has a center from its underside into the Near the open top of the spinning rotor 1 in the cavity 3 protruding part 10. The closure member contributes Fiber feed tube 11 which extends through the closure member and opens into a conical bottom surface 12 of the closure member 9. Centrally through the locking member 9

309817/08 16

A Garnahführröhrchen 13 stretches coaxially to Rotation axis of the spinning rotor 1. The yarn discharge tube 13 opens into a yarn inlet in the rotor, in the area of which it is formed with a separating flange 17.

The flange 17 has an outwardly "widening" Muzzle part 15, the bottom of which is located below the fiber collecting groove 8 and a lower one Surface 16 which extends upwardly and outwardly and continues the surface of the mouth portion 15. the lower surface 16 is substantially parallel to the inner surface of the lower part 7 of the spinning rotor 1 of which it is is adjacent. The separation flange 17 has a conical upper surface 18 that is parallel to the bottom 12 of the closure member 9 runs, which it is opposite and which extends downwards and outwards, so that it meets the lower surface 16 in the vicinity of the fiber collecting groove 8. The intersection of this both surfaces is preferably somewhat above the level of the area of the maximum diameter of the fiber collecting groove 8. In a neck part 20 of a yarn passage 14 enclosed by the tube 13 is in the area in that the mouth part 15 merges into the yarn passage 14, a number of grooves 19 are provided.

In operation, fibers are discrete from an opening device, which is known per se and is not shown through the fiber feed tube 11 under the action of a Air flow transported downwards, which is generated by the negative pressure acting in the suction channel 5. the Fibers emerge from the fiber feed tube 11 in the area between the lower surface 12 of the closure member 9 and the top surface 18 of the flange 17; because of the high speed of the spinning rotor 1, they are in the form of a

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Fiber ring collected in the fiber collecting groove 8 in the area of maximum diameter.

The fibers are withdrawn from the fiber collecting groove 8 in that they are continuously attached to a yarn 21. be spönnen, which continuously from the spinning rotor 11 through the yarn passage 14 by means of two delivery rollers not shown is withdrawn. The separation flange 17 has the task of the incoming fibers to separate from the outgoing yarn and to ensure that the fibers when they exit from the fiber collecting groove 8 are spun onto the end of the yarn, being controlled by the lower surface 16 of the separating flange 17, which to guide the fibers at their transition from the Fiber collecting groove 8 to the yarn passage 14 is used, while the newly formed yarn is deflected into the area below the fiber collecting groove 8.

When the spinning rotor 1 is to be cleaned of fiber material, the rotor drive is switched off so that the Rotor can reduce its speed. The negative pressure prevailing in the suction channel 5 is maintained; it acts in the sense of tormenting the spinning rotor from fiber material. In this connection it was found that the new device has very good self-cleaning properties.

The embodiment shown in Fig. 2 is identical with that of Fig. 1 except for the difference that the underside 121 of the closure member 9 is flat here, whereby a radially widening gap between this lower surface 121 and the upper surface 18 of the flange 17 is formed.

309817/0816

Claims (1)

Claims η J Of fen-end spinning device with a revolving spinning rotor having a fiber collecting surface, on whose fiber collecting surface continuously discrete fibers can be deposited, which are then removed again by continuous piecing at the end of a continuously withdrawn yarn, the spinning rotor being arranged concentrically to its axis of rotation and two surface areas which merge into one another in an area of maximum diameter forming the fiber collecting area, characterized in that it has an area extending from a yarn outlet over an area containing the points of maximum diameter of the fiber collecting area (8) in a yarn inlet opening (15) within the Spinning rotor (1) has opening yarn discharge tube (13), which in the region of the end associated with the yarn inlet opening (15) has a flange (17) which has a surface (16) extending outwards and onto the fiber collecting surface (8) which a tour f For the fibers removed from the fiber collecting surface (8) forms when they are spun onto the end of the yarn. 2. Apparatus according to claim 1, characterized in that the Garnabfuhrrohrchen (13) coaxially to the axis of rotation of the spinning rotor (1) is arranged. 3. Apparatus according to claim 2, characterized in that the guide surface (16) at least over a predetermined part at a distance from the adjacent inside lying surface (7) of the spinning rotor (1) under training ■ "■ ⁷ 309817/0816 a constant or substantially constant gap extends. 4. Apparatus according to claim 3, characterized in that that the guide surface (16) over its predetermined part is conical » 5. Device according to one of claims 2 -A, characterized in that the Garnabführröhrchen (13) in the region of the yarn inlet opening (15) has an outwardly widening neck part (20) which merges into the guide surface (16). 6. Apparatus according to claim 5, characterized in that the neck part (20) with a number of grooves (19) is trained. 7. Device according to one of claims 2-6, characterized characterized in that the flange (17) has a rear surface (18) opposite the guide surface (16) is formed and that the spinning rotor (1) the discrete fibers on this rear surface (18) of the Flange (17) adjacent side can be fed. 8. Apparatus according to claim 7, characterized in that the rear surface (18) and the guide surface (16) intersect to form a circular edge of the flange (17). 9. Device according to one of claims 2-8, characterized characterized in that the fiber collecting surface is formed by a limited fiber collecting groove (8). - 8 309817/0816 ίο. Device according to spoke 9, characterized in that • da, ß the two surface areas 16,7) 'of the inner surface of the'; Spinning rotor (1) a conical from the one end face of the spinning rotor i1) away and from 'the axis of rotation of the' spinning rotor | 1) he stretching first '. Surface area and one from the other end face of the spinning rotor (1) away and from the axis of rotation of the spinning rotor (1) are outwardly extending conical second surface area (6) and that these 'two conical surface areas (6,7) merge into one another in the area of maximum diameter in which the limited fiber sanaelnut (8) is formed. 11. Device according to one of claims 2 - 1O, characterized in that the spinning rotor Π) is open on one side and closed on the other side, since © the open side of the spinning rotor (1) by a stationary .Verschlag ~ member ( 9) is completed, through which the yarn discharge tube (13) runs and that the guide surface <16.) Is arranged adjacent to the closed side of the spinning rotor (1). :. ^. 12. Device according to claims 11 and β, thereby characterized in that the circular edge lies in a plane which is the open side of the spinning rotor (1) closer than the plane in which the points of maximum diameter of the fiber collecting surface f81 lie. 13. Device according to one of claims 7-12, characterized characterized in that the rear surface (18) of the Flange (17) is conical and extends radially outward from the axis of rotation of the spinning rotor (1). 3 0 9 817/0816 7250831 14. Device according to claims 11 and 13, characterized characterized as having a fiber feed tube (11). having, that in an end face (12) of the closure member (9) opens and that this end face (12) has a conical Has shape and runs parallel to the conical rear surface (18) of the flange (17). 15. Device according to claims 11 and 13, characterized characterized in that it has a fiber feed tube (11) has ,, which opens into an end face (121) of the closure member (9) and that the end face (121) .eben is formed and lies in a plane extending at right angles to the axis of rotation of the spinning rotor (1). 16. Device according to. Claim 11 or 12, characterized in that that it has a fiber feed tube (11) which is in an end face (12) of the closure member (9) opens and that the rear surface (18) of the flange (17) and the end face (12) have a constant or substantially constant gap between them limit yourself. . 30981 7/0816