WO2003097911A1 - Thread draw-off nozzle - Google Patents
Thread draw-off nozzle Download PDFInfo
- Publication number
- WO2003097911A1 WO2003097911A1 PCT/DE2003/001415 DE0301415W WO03097911A1 WO 2003097911 A1 WO2003097911 A1 WO 2003097911A1 DE 0301415 W DE0301415 W DE 0301415W WO 03097911 A1 WO03097911 A1 WO 03097911A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thread
- thread take
- profile elements
- nozzle according
- nozzle
- Prior art date
Links
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 thread draw-off nozzle for an open-end rotary spinning machine.
- the real yarn rotation initiated by rotation of the spinning rotor runs evenly into the end of the yarn that is being created.
- the real yarn twist is mainly introduced into the piece of yarn that is located between the thread take-off nozzle and a thread take-off device of the open-end rotor spinning device.
- the real yarn twist often runs into the yarn piece in front of the thread take-off nozzle only incompletely. If this means that the yarn rotation is caused, this can have a negative impact on the spinning stability of the open-end rotor spinning device.
- Thread take-off nozzles should remain in use for as long as possible without significantly changing the spinning stability.
- the spun thread is drawn through the thread take-off device over the thread take-off nozzle, the thread rotating as a result of the rotor rotation.
- the resulting friction between the thread and the thread take-off nozzle leads to wear on the latter.
- the aim should be to obtain the highest possible wear resistance. This is influenced both by the choice of material and by the shape of the thread take-off nozzle.
- the shape of the thread take-off nozzle has an influence on the variety of possible uses of the thread take-off nozzle.
- Thread take-off nozzles generally have a flat plate-like section, the center of which narrows like a funnel to form a thread take-off channel. To improve the spinning stability, the surface structure of the plate-like section and the funnel-shaped area have already been influenced.
- DE-OS 25 44 721, DE 33 44 741 AI and EP 0422615 B1 each describe thread draw-off nozzles which have notch-like depressions in the region of the funnel-shaped region.
- the thread take-off nozzle is made of a ceramic material and has a roughness depth of 0.2 ⁇ m to 0.7 ⁇ m in the area of the thread inlet funnel.
- notches are arranged here, which can have different notch opening angles.
- AI thread take-off nozzles with a replaceable, made of sheet steel and hardened thread inlet funnel are known.
- the thread feed hopper is provided with notches or protruding beads.
- the notches can be arranged in two ring-like arrangements which lie one behind the other in the thread running direction.
- a thread take-off nozzle which has notches in the area of the thread entry zone and protrusions in the area of the thread take-off channel. While the notches are intended to improve the spinning stability of the open-end spinning device, the projections in the thread take-off channel serve to produce a particularly hairy yarn.
- the thread take-off nozzle according to the invention has, at least in the area of the thread inlet surface and the funnel-shaped input area that leads to the thread take-off channel, a profile which is formed from elongated profile elements. These extend transversely to the radial direction of the thread inlet surface and have at most a length which corresponds to the circumference of a circle defined by them about the central axis of the thread draw-off nozzle.
- the profile elements are thus, for example, rings concentric with one another with or without interruptions or a spiral structure which consists of individual sections, the length of which corresponds at most to the respective circular length.
- the combination of groove and rib structure allows the yarn hairiness to be influenced in a targeted manner. This can lead to advantages in terms of handle when using such yarns in knitting. With increasing wear, for example, the rib structures become lower, but this hardly affects their effectiveness.
- FIG. 1 shows an open-end spinning device in a schematic sectional illustration
- FIG. 2 the spinning rotor and the thread take-off nozzle of the open-end spinning device according to FIG. 1,
- Figure 3-8 different embodiments of the thread take-off nozzle according to the invention in a longitudinal section
- Figure 9-14 further embodiments of the thread take-off nozzle according to the invention in plan view.
- FIG. 1 illustrates an open-end spinning device 1, which as essential elements has a feeding device 2, a spinning device 3 fed by it and a thread take-off device 4 which interacts with it.
- the feed device 2 includes a dissolving device 5 with a dissolving roller 6, to which a feed roller 7 is assigned. This leads the opening roller 6 to a sliver 8.
- the opening roller 6 runs in a housing 9 which has a dirt separation opening 11 on its underside.
- a fiber feed channel 12 extends from the housing 9 to the spinning device and feeds fibers 14 to it in an air-borne manner.
- the spinning device 3 includes a spinning rotor 16 which is rotatably arranged in a closed housing 15 and which is carried by a shaft 17 and is driven to rotate in a predetermined direction of rotation.
- the spinning rotor 16 has a rotationally symmetrical interior which tapers conically towards its opening. In the transition between its frustoconical wall and its substantially flat bottom, a rotor groove 18 is formed, in which a fiber band 19 lies during operation.
- the fiber feed channel 12 opens at a channel plate adapter 21 at an opening 22 which projects into the interior of the spinning rotor 16.
- the housing 15 is provided with a suction opening 23 to which a vacuum line is connected. An air flow passing through the housing 15 is generated via the suction opening and supports the introduction of the fibers into the spinning rotor 16.
- the channel plate adapter 21 holds a thread take-off nozzle 24 centrally in the spinning rotor 16, via which a thread 25 which is being formed is drawn off from the spinning rotor 16.
- a thread take-off tube 27 connects to the thread take-off nozzle or its thread take-off channel 26, via which the thread 28 is guided to a thread take-off roller pair 29 and from there to a bobbin roller 31 and a bobbin 32.
- the spinning device 3 is illustrated separately in FIG. 2. As can be seen, the thread draw-off nozzle 24 has a ceramic body 34 which is held in a metal frame 35.
- the ceramic body 34 determines the function of the thread draw-off nozzle. It is designed in a special way and illustrated separately in FIG. 3. On its side facing the bottom of the spinning rotor 16, it forms a nozzle head 36 with a plate-like thread inlet surface 37 which is round in outline. This contains a funnel-like section in the center, which forms an entrance area 38 for the thread take-off channel 26.
- the input area 38 preferably has a substantially symmetrical, for example a circular or a polygonally delimited, cross section.
- the thread inlet surface 37, including the input area 38 is provided with a profile 39 which is formed, for example, by a plurality of ribs 41 to 45 designed as concentric rings.
- Each rib 41 to 45 in each case forms a ring which follows a circle which is concentric with the central axis 46 of the fiber withdrawal channel 26.
- the length of each continuous rib 41 to 45 corresponds to the circumference of this circle.
- Each rib 41 to 45 has on its side facing away from the nozzle head 36 a thread Support surface 47, which is indicated in Figure 3 only for the ribs 43 and 44.
- the thread support surfaces 47 of all the ribs 41 to 45 form a common, but not contiguous thread support surface over which the thread slides when the thread is drawn off. As a result of their concentric alignment with the central axis 46, the thread does not receive any feed component when it is rotated over the thread support surfaces 47.
- Figure 4 illustrates a modified embodiment of the nozzle head 36.
- the metal frame 35 is identical - only the ceramic body 34 is modified. A whole series of different nozzle heads 36 can thus only be obtained by accommodating different ceramic bodies 34 in the metal frame 35.
- the ceramic body 34 according to FIG. 4 has a plurality of annular ribs 43, 44, 45 arranged concentrically to one another on its thread inlet surface 37, which coincide with the ribs 43, 44, 45 according to FIG. 3.
- the ribs 41, 42 arranged in the entrance area 38 are designed in the manner of a spiral. These impart a feed movement to the thread rotating in relation to the nozzle head 36 if the direction of rotation is selected accordingly. The direction of rotation can also be selected in the opposite direction, so that a force component counteracts the thread take-off.
- FIG. 5 A further embodiment of the thread draw-off nozzle 24 according to the invention is illustrated in FIG. 5.
- the profiling 39 here in turn comprises several, for example three, concentric ribs 43, 44, 45, which are essentially in FIG the plate-like flat section of the thread inlet surface
- FIG. 2 illustrates an embodiment of the thread take-off nozzle 24 in which the grooves 51,
- FIG. 6 A thread draw-off nozzle 24 further developed in this direction is illustrated in FIG. 6.
- the notches 51, 52 penetrate the two inner ribs 41, 42 which, like the other ribs 43, 44, 45, are each designed as rings concentric with the central axis 46.
- the length of each rib thus corresponds precisely to the corresponding circumference of the circle of the same radius concentric with the central axis 46.
- FIG. 7 illustrates a further modified embodiment of the thread draw-off nozzle 24, in which the two inner ribs 41, 42, as in the exemplary embodiment according to FIG. 4, are combined to form a continuous spiral rib. This is in turn penetrated by the grooves 51, 52.
- the remaining ribs 43, 44, 45 are circular and thus just as long as the corresponding circumference.
- the grooves 51, 52 (as well as further grooves distributed uniformly around the circumference, not shown, which extend parallel to the central axis 46) divide the spiral rib 41, 42 into short individual sections which are shorter than the circumference of the respective circle of the same diameter ,
- the grooves influence the penetration of the thread twist caused by spinning through the thread take-off nozzle 24.
- this thread design proves to be relatively robust against the effects of wear.
- FIG. 8 Another embodiment of the thread take-off nozzle 24 is illustrated in FIG. 8.
- the embodiment is made here in such a way that there are no ribs in the entrance area 38 but only the grooves 51, 52, 53 and further, not illustrated, also parallel to the central axis 46 and equally spaced around the circumference. Otherwise, the thread support surface 37 carries the ribs 43, 44, 45 which have already been explained several times in connection with FIGS. 3 to 7.
- FIG. 9 A further embodiment of the thread draw-off nozzle 24 is illustrated in FIG.
- the ribs 43, 44, 45 are each interrupted.
- the beginnings and the ends of the respective rib sections each lie on lines L1, L2, which are approximately radially oriented to the central axis 46.
- the lines L1, L2 can be curved or arranged parallel to one another.
- the entrance area 38 is free of recesses or elevations.
- it can also have recesses or Surveys can be provided according to one of the above-described embodiments.
- the entrance area 38 can be polygonally delimited. Corresponding depressions can also be provided instead of the ribs 43, 44, 45.
- FIG. 10 A modified embodiment can be seen in FIG. 10. This differs from the embodiment described above in that the rib sections of the ribs 43, 44, 45 are offset from one another such that the ribs are each in a gap. This has the advantage that the circumferential thread runs smoothly.
- arc-shaped, rib-like elevations 43b, 43a are alternately arranged with corresponding groove-shaped depressions 43c, 43d.
- the arcuate sections 43a, 43b, 43c and 43d are arranged on a circle concentric to the central axis 46. The respective length is significantly shorter than the circumference.
- FIG. 12 illustrates a further embodiment of the thread draw-off nozzle 24. This is based on the embodiment according to FIG. 10, with some of the arcuate rib sections being provided with notches. This is strikes the rib sections 44a, 44b, 44c, 44d of the middle rib 44 in the exemplary embodiment presented. Corresponding notches 61, 62, 63, 64 can, for example, be as deep as the rib section in question is high. The notches are preferably arranged in areas in which they are aligned in the radial direction with gaps in the other ribs 43, 45.
- FIG. 13 Another possibility of the inventive design of the thread inlet surface 37 can be seen in FIG. 13.
- rib sections 65 are distributed over the entire thread inlet surface 37 in such a way that they form a spiral when strung together.
- Each rib section 65 is approximately arc-shaped and shorter than the circumference of a circle of the same radius around the central axis 46.
- the individual arc-shaped rib sections 65 are preferably in a gap, so that the thread runs smoothly.
- Grooves or raised structures can be introduced in all or some rib sections 65.
- the rib sections 65 can also be replaced by corresponding recesses.
- FIG. 14 illustrates a combined embodiment of the thread take-off nozzle 24, in which the ribs 43 and 45 are divided into four and three sections, respectively.
- the rib 44 is continuous.
- This embodiment can also be combined with all other embodiments, in particular with regard to the design of the entrance area 38.
- the entrance area 38 is illustrated here with a hexagonal cross section.
- structures are arranged on the thread inlet surface 37 in succession of rib-like elevations or depressions which extend approximately in the circumferential direction and whose length is equal to or less than the circumference of a circle of the same radius around the central axis 46 an interruption of the thread support surface 47 is achieved in a manner that improves the spinning stability and the thread properties.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003232619A AU2003232619A1 (en) | 2002-05-17 | 2003-05-02 | Thread draw-off nozzle |
DE10393063.9T DE10393063B4 (en) | 2002-05-17 | 2003-05-02 | off nozzle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10222635.0 | 2002-05-17 | ||
DE10222635A DE10222635A1 (en) | 2002-05-17 | 2002-05-17 | off nozzle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003097911A1 true WO2003097911A1 (en) | 2003-11-27 |
Family
ID=29432207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001415 WO2003097911A1 (en) | 2002-05-17 | 2003-05-02 | Thread draw-off nozzle |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003232619A1 (en) |
DE (2) | DE10222635A1 (en) |
WO (1) | WO2003097911A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7065951B2 (en) | 2004-03-15 | 2006-06-27 | Maschinenfabrik Rieter Ag | Yarn withdrawal nozzle for an open-end rotor spinning arrangement and method of making same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007017558A1 (en) * | 2007-04-12 | 2008-10-16 | Intertech Zeichengeräte GmbH | Circle with leg joint and information carrier surfaces |
US7937843B2 (en) | 2007-04-12 | 2011-05-10 | Intertech Zeichengeraete Gmbh | Compass having a leg joint and information bearing surfaces |
DE102011002972A1 (en) | 2010-06-25 | 2011-12-29 | Rieter Ingolstadt Gmbh | off nozzle |
DE102019114500A1 (en) * | 2019-05-29 | 2020-12-03 | Maschinenfabrik Rieter Ag | Twist element for a spinning nozzle of an air-jet spinning machine and spinning nozzle |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3834147A (en) * | 1972-10-16 | 1974-09-10 | Vyzk Ustav Bavlnarsky | Strand twisting arrangement for an open-ended yarn spinning system |
DE3103284A1 (en) * | 1981-01-31 | 1982-08-26 | W. Schlafhorst & Co, 4050 Mönchengladbach | Thread draw-off nozzle for an open-end rotor spinning machine |
GB2182069A (en) * | 1985-08-29 | 1987-05-07 | Textima Veb K | Draw-off nozzle for roving and spinning frames |
US5675965A (en) * | 1992-08-20 | 1997-10-14 | Burckhardt America, Inc. | Navel member for open end spinning device |
US6035625A (en) * | 1997-09-03 | 2000-03-14 | W. Schlafhorst Ag & Co. | Yarn withdrawal nozzle |
DE10001468A1 (en) * | 2000-01-15 | 2001-07-19 | Rieter Ingolstadt Spinnerei | Yarn take-off jet at an open-end spinner has structured ring projections at the yarn contact surface to give a progression of the yarn twist to the yarn/fiber bonding point for spinning softer yarns without abrasion |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2544721A1 (en) * | 1975-10-07 | 1977-04-14 | Feldmuehle Anlagen Prod | DEVICE FOR SPINNING |
DE3203284C2 (en) * | 1982-02-01 | 1984-08-02 | Siemens AG, 1000 Berlin und 8000 München | Broad beam, rotationally symmetrical street light |
DE3344741A1 (en) * | 1983-12-10 | 1985-06-20 | W. Schlafhorst & Co, 4050 Mönchengladbach | THREAD DRAWING NOZZLE FOR AN OPENING ROTOR SPINNING MACHINE |
DE3934166C2 (en) * | 1989-10-12 | 1994-06-09 | Rieter Ingolstadt Spinnerei | Open-end spinning device |
DE4010140A1 (en) * | 1990-03-29 | 1991-10-02 | Rieter Ag Maschf | SPIRAL BODY, ESPECIALLY FOR FLYER WINGS ON RASPING MACHINES |
DE4224632B4 (en) * | 1992-07-25 | 2004-05-27 | Saurer Gmbh & Co. Kg | Device for open-end spinning |
-
2002
- 2002-05-17 DE DE10222635A patent/DE10222635A1/en not_active Withdrawn
-
2003
- 2003-05-02 DE DE10393063.9T patent/DE10393063B4/en not_active Revoked
- 2003-05-02 WO PCT/DE2003/001415 patent/WO2003097911A1/en not_active Application Discontinuation
- 2003-05-02 AU AU2003232619A patent/AU2003232619A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3834147A (en) * | 1972-10-16 | 1974-09-10 | Vyzk Ustav Bavlnarsky | Strand twisting arrangement for an open-ended yarn spinning system |
DE3103284A1 (en) * | 1981-01-31 | 1982-08-26 | W. Schlafhorst & Co, 4050 Mönchengladbach | Thread draw-off nozzle for an open-end rotor spinning machine |
GB2182069A (en) * | 1985-08-29 | 1987-05-07 | Textima Veb K | Draw-off nozzle for roving and spinning frames |
US5675965A (en) * | 1992-08-20 | 1997-10-14 | Burckhardt America, Inc. | Navel member for open end spinning device |
US6035625A (en) * | 1997-09-03 | 2000-03-14 | W. Schlafhorst Ag & Co. | Yarn withdrawal nozzle |
DE10001468A1 (en) * | 2000-01-15 | 2001-07-19 | Rieter Ingolstadt Spinnerei | Yarn take-off jet at an open-end spinner has structured ring projections at the yarn contact surface to give a progression of the yarn twist to the yarn/fiber bonding point for spinning softer yarns without abrasion |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7065951B2 (en) | 2004-03-15 | 2006-06-27 | Maschinenfabrik Rieter Ag | Yarn withdrawal nozzle for an open-end rotor spinning arrangement and method of making same |
DE102004013828B4 (en) * | 2004-03-15 | 2007-03-15 | Wilhelm Stahlecker Gmbh | Garnabzugsdüse for an open-end rotor spinning device |
Also Published As
Publication number | Publication date |
---|---|
DE10393063B4 (en) | 2017-09-21 |
DE10222635A1 (en) | 2003-12-18 |
DE10393063D2 (en) | 2005-05-04 |
AU2003232619A1 (en) | 2003-12-02 |
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