EP1445358A2 - Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen - Google Patents
Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen Download PDFInfo
- Publication number
- EP1445358A2 EP1445358A2 EP03026450A EP03026450A EP1445358A2 EP 1445358 A2 EP1445358 A2 EP 1445358A2 EP 03026450 A EP03026450 A EP 03026450A EP 03026450 A EP03026450 A EP 03026450A EP 1445358 A2 EP1445358 A2 EP 1445358A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- yarn take
- notch
- channel
- take
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes
Definitions
- the invention relates to a game take-off nozzle for open-end rotor spinning devices, with one existing ceramic material and a yarn to be deflected arched Contact area that merges from a face into a yarn take-off channel and into the Notches molded in, essentially radially to the yarn take-off channel, the notch outlet to the yarn take-off channel into an uncut section of the arched Contact area merges.
- Yarn take-off nozzles guide the spun yarn from the heart of an open-end rotor spinning device, the so-called spinning rotor, to the outside.
- the formation of the yarn take-off nozzle itself has a major impact on both the quality of the spun yarn and the Spinning stability of the open-end rotor spinning device.
- the design of the yarn take-off nozzle ultimately decisively determines the spinning conditions in the spinning rotor. This is especially true in terms of yarn twist, from the spun yarn to the inside of a fiber collection groove of the spinning rotor runs back.
- the making of bumps in the form of notches has turned up here proved to be a suitable compromise between spinning stability and yarn quality.
- the drawn off yarn receives a so-called false twist through the notches, which ensures the spinning stability is increased and periodically interrupted again and again, as it were from time to time "Returns".
- yarn take-off nozzles are wearing parts, they become, or at least their curved ones Contact surface, usually made of ceramic material. If in this ceramic existing contact surface notches are formed, forms around the notch outlet and the Notch run-in often has an inhomogeneous surface texture. There are cracks in the micro range and to recognize other surface defects that are basically due to the manufacturing process which are notches molded into ceramic material. During the manufacturing process, the contact surface converted to hard ceramic in a heat treatment. The contact surface suffers a certain loss. They occur due to the notch effect of the notches in their area Stress peaks, which lead to cracks in the ceramic. These cracks are mostly in Notch base and can not always be removed by polishing. This Cracks and sometimes also poses in the notch outlet and often also in the notch inlet come into contact with the spun yarn drawn off over the contact surface and stress the yarn to a great extent, so that its quality often suffers as a result.
- the depression itself can be designed differently. In one version it is a blind hole educated. In another embodiment, the depression is than to the yarn take-off channel designed concentric groove.
- the cover 10 contains a fiber feed channel 12 which lies outside the drawing plane and which in a manner not shown, because in a known manner, begins at an opening roller and its mouth 13 is directed against the fiber sliding surface 7. Due to the effect of the mentioned vacuum source During operation, the fibers are separated by the opening roller through the fiber feed channel 12 shot against the fiber sliding surface 7, from where they slide into the fiber collecting groove 6, there one Form fiber ring and in a known manner as a dash-dotted yarn 14 in the axial Pulled off in the direction of the shaft 3. The one sucked in via the fiber feed channel 12 Transport air can pass through an overcurrent gap 15 in the open front 9 of the spinning rotor 1 flow away.
- the spun yarn 14 is first at least approximately from the fiber collecting groove 6 in a normal plane of the spinning rotor 1 lying to the shaft 3 and then over one Yarn take-off channel 16 of a yarn take-off nozzle 17 according to take-off direction A by means of a not Draw-off roller pair shown and a package, also not shown fed.
- the yarn take-off channel 16 is coaxial with the shaft 3 of the spinning rotor 1, so that Yarn 14 is deflected by about 90 ° by means of the yarn take-off nozzle 17, the yarn 14 in the mentioned normal plane corresponding to the direction of rotation of the rotor plate 2 revolves like a crank.
- the yarn take-off nozzle 17 is in one by means of an external thread 18 or other holding means corresponding hole in the cover 10 screwed.
- the deflection of the yarn 14 from the normal plane in the yarn take-off channel 16 is used on the yarn take-off nozzle 17
- Existing funnel-shaped arched contact surface 19, which lies on a in the normal plane End face 20 begins.
- the contact surface 19 is one area curved in the manner of a circular arc, the immediately the smallest cross section 21 of the Yarn take-off channel 16 follows.
- the contact surface 19 forms approximately in the axial section shown a quarter circle with a radius of curvature that is, for example, three millimeters.
- the yarn draw-off nozzle 17 has a considerable influence on the current one Yarn twist in the fiber collecting groove 6 at the moment the yarn 14 is created.
- notches 22 are made in the contact surface 19, which are essentially radial to the yarn take-off channel 16 and the yarn 14 drawn off temporarily so issue false twist, which increases the spinning stability, so the risk of yarn breakage reduced.
- the yarn take-off nozzle 17 exists at least in the area of its contact surface 19 for the sake of Wear protection made of ceramic material, in which the notches 22 are already in the Manufacturing are molded. These notches 22 go to a notch outlet 23 Yarn take-off channel 16 into an un-notched portion 24 of the curved contact surface 19 about. Due to the manufacturing process, however, an inhomogeneous surface forms at the notch outlet 23 for reasons that have already been mentioned at the beginning. That's why it is desirable that the drawn yarn 14 with the notch outlet 23 if possible does not come into contact.
- the notch outlet 23 is in a recess 25 ends. This depression 25 prevents the yarn 14 with the bad one Surface quality of the notch outlet 23 comes into contact.
- the area of Notch inlet 26, on the other hand, is not problematic in this embodiment, since the yarn 14 is the Notch inlet 26 not touched.
- the contact surface 19 is designed that the drawn-off yarn 14 would also run over the notch inlet 26.
- the contact surface 19 is designed that not only one at the notch outlet 23 Indentation 27, but also an indentation 28 is provided at the notch inlet 26.
- depressions are each formed as blind holes 27 and 28.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims (4)
- Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen, mit einer aus keramischem Material bestehenden und ein abzuziehendes Garn umlenkenden gewölbten Kontaktfläche, die von einer Stirnfläche in einen Garnabzugskanal übergeht, und mit in die Kontaktfläche eingeformten, im Wesentlichen radial zum Garnabzugskanal verlaufenden Kerben, deren Kerbenauslauf zum Garnabzugskanal hin in einen ungekerbten Teilbereich der gewölbten Kontaktfläche übergeht, dadurch gekennzeichnet, dass der Kerbenauslauf (23) in einer Vertiefung (25) endet.
- Garnabzugsdüse nach Anspruch 1, dadurch gekennzeichnet, dass der dem Garnabzugskanal (16) abgewandte Kerbeneinlauf (26) an einer Vertiefung (28;30) beginnt.
- Garnabzugsdüse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Vertiefung (25) als Sackloch (27;28) ausgebildet ist.
- Garnabzugsdüse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Vertiefung (25) als zum Garnabzugskanal (16) konzentrische Rille (29;30) ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10305792A DE10305792A1 (de) | 2003-02-10 | 2003-02-10 | Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen |
| DE10305792 | 2003-02-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1445358A2 true EP1445358A2 (de) | 2004-08-11 |
| EP1445358A3 EP1445358A3 (de) | 2005-04-13 |
| EP1445358B1 EP1445358B1 (de) | 2006-10-25 |
Family
ID=32603234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03026450A Expired - Lifetime EP1445358B1 (de) | 2003-02-10 | 2003-11-20 | Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1445358B1 (de) |
| AT (1) | ATE343667T1 (de) |
| DE (2) | DE10305792A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291332A (zh) * | 2015-11-06 | 2018-07-17 | 里特机械公司 | 纱线退绕喷嘴 |
| US20180320292A1 (en) * | 2015-11-06 | 2018-11-08 | Maschinenfabrik Rieter Ag | Thread Draw-Off Nozzle having Notches Extending Radially to the Nozzle Bore |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2544721A1 (de) * | 1975-10-07 | 1977-04-14 | Feldmuehle Anlagen Prod | Vorrichtung zum verspinnen |
| DE3940046A1 (de) * | 1989-12-04 | 1991-06-06 | Schlafhorst & Co W | Verfahren und vorrichtung zum herstellen eines fadens |
| DE10061337A1 (de) * | 2000-12-08 | 2002-01-10 | Rieter Ingolstadt Spinnerei | Fadenabzugsröhrchen für eine Spinnstelle einer Spinnmaschine und Verfahren zum Anspinnen eines Fadens |
-
2003
- 2003-02-10 DE DE10305792A patent/DE10305792A1/de not_active Withdrawn
- 2003-11-20 DE DE50305474T patent/DE50305474D1/de not_active Expired - Fee Related
- 2003-11-20 AT AT03026450T patent/ATE343667T1/de not_active IP Right Cessation
- 2003-11-20 EP EP03026450A patent/EP1445358B1/de not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291332A (zh) * | 2015-11-06 | 2018-07-17 | 里特机械公司 | 纱线退绕喷嘴 |
| US20180320292A1 (en) * | 2015-11-06 | 2018-11-08 | Maschinenfabrik Rieter Ag | Thread Draw-Off Nozzle having Notches Extending Radially to the Nozzle Bore |
| US10767284B2 (en) * | 2015-11-06 | 2020-09-08 | Maschinenfabrik Rieter Ag | Thread draw-off nozzle having notches extending radially to the nozzle bore |
| CN108291332B (zh) * | 2015-11-06 | 2021-11-02 | 里特机械公司 | 纱线退绕喷嘴 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1445358B1 (de) | 2006-10-25 |
| ATE343667T1 (de) | 2006-11-15 |
| EP1445358A3 (de) | 2005-04-13 |
| DE50305474D1 (de) | 2006-12-07 |
| DE10305792A1 (de) | 2004-08-19 |
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