EP2961868A1 - Vorrichtung zum pneumatischen fördern und führen eines multifilen fadens - Google Patents
Vorrichtung zum pneumatischen fördern und führen eines multifilen fadensInfo
- Publication number
- EP2961868A1 EP2961868A1 EP14704597.5A EP14704597A EP2961868A1 EP 2961868 A1 EP2961868 A1 EP 2961868A1 EP 14704597 A EP14704597 A EP 14704597A EP 2961868 A1 EP2961868 A1 EP 2961868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- return flow
- thread
- conveying
- compressed air
- 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
Links
- 230000007704 transition Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 abstract description 11
- 239000003570 air Substances 0.000 description 59
- 230000000694 effects Effects 0.000 description 9
- 238000002074 melt spinning Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
- D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/16—Devices for entraining material by flow of liquids or gases, e.g. air-blast devices
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
- D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
- B65H2701/313—Synthetic polymer threads
Definitions
- the invention relates to a device for pneumatically conveying and guiding a multifilament yarn according to the preamble of claim 1.
- a compressed air flow is introduced within a conveying channel, which detects a thread entering through a thread inlet opening into the conveying channel and conveys it to a thread outlet opening.
- a high conveying force is generated by the expanding compressed air to the thread.
- a return flow which emerges against the yarn path from the thread inlet opening.
- return flows of the compressed air hinder the shrinkage of the thread.
- individual broken filaments of the multifilament yarn are hindered from entering the delivery channel due to the backflow of the air.
- the invention is based on the recognition that rapid air flows preferably cling to walls and flow along. Such physical properties are also known as so-called Coanda effects.
- the natural behavior of the flow within the delivery channel is used to obtain a derivative of the return flow in a return flow channel. This allows the return flow of the blowing air to dissipate in a non-critical for the thread guide environment.
- the return flow skanal with an inclination in the conveying direction of the delivery channel.
- the inclination of the return flow channel is essentially determined by an angle between the return flow and the channel section of the delivery channel between the thread inlet opening and the mouth of the compressed air channel in the range from 5 ° to 40 °. This makes it possible to favor the deflection of the return flow out of the delivery channel.
- the development of the invention is preferably carried out, in which the return flow skanal and the delivery channel in the mouth region on the side facing the compressed air channel forms a rounded transition surface.
- This allows even slight negative pressures in the mouth region of the return flow channel to be generated, which lead to the intake of ambient air from the thread inlet opening.
- the leadership of the multifilament yarn is particularly favored.
- the effectiveness of the flow deflection can be further improved by, according to an advantageous embodiment of the invention, a feed flow skanal opens into the channel section of the conveyor channel in the region of the mouth of the return flow channel and in which the inflow channel connects the conveyor channel with an ambient atmosphere.
- the additional air supply in the mouth region of the return flow channel favors the flow deflection of the blown back air.
- the additional supply air is introduced substantially transversely into the delivery channel, so that the supply flow channel encloses an angle in the range of 80 ° to 100 ° in the mouth region with the delivery channel.
- the device according to the invention is particularly suitable for directly carrying out further treatments of the thread in a melt spinning process, since both broken filaments and loops which protrude from the thread composite can pass unhindered through the thread inlet opening of the conveying channel.
- the development of the invention is preferably carried out, in which the delivery channel opens with the thread outlet in a stuffer box through which the thread is compressible into a yarn plug.
- This device's variant becomes a herbal Its used by threads and preferably used in the production of carpet yarns.
- FIG. 1 shows schematically a cross-sectional view of a first embodiment of the device according to the invention
- Fig. 2 shows schematically a cross-sectional view of another embodiment of the device according to the invention
- a nozzle body 1 shows a first embodiment of the device according to the invention is shown schematically in a cross-sectional view.
- a nozzle body 1 an elongated closed conveying channel 2 is formed, which is connected at an upper end with a thread inlet opening 3 and at the lower end with a thread outlet 4 with the environment.
- the thread inlet opening 3 has an inlet funnel 15 in order to promote an inlet of a thread into the conveying channel 2.
- the delivery channel 2 may be formed as a bore or as a groove, wherein the nozzle body could be constructed in one piece or in several parts.
- two mirror-symmetrical compressed air channels 5.1 and 5.2 are provided in an upper third of the conveying channel 2, which open into the conveying channel 2 with an inclination in the conveying direction.
- the mouths 10.1 and 10.2 of the compressed air channels 5.1 and 5.2 are located on the wall of randomlyka- nals 2 opposite. With the opposite ends of the compressed air channels 5.1 and 5.2 are connected via supply channels 6.1 and 6.2 with at least one compressed air port 7.
- a compressed air source can be connected to the nozzle body 1 via the compressed air connection opening 7.
- the mouths of the compressed air channels 10.1 and 10.2 on the conveyor channel 2 form the so-called injector zone 9, in which a compressed air with a guided inside the conveyor channel 9 thread meet for the first time.
- the region above the injector zone is defined here as the yarn inlet zone 8 and the region below the injector zone 9 as the expansion zone 11.
- the channel section of the conveying channel 2 advantageously has a channel widening in the region of the expansion zone 11, so that an additional acceleration of the blowing air occurs.
- a return flow channel 12 is provided in the nozzle body 1.
- the return flow channel 12 is formed in the channel section of the conveying channel 2 between the thread inlet opening 3 and the mouth of the compressed air channel 10.1 and 10.2, which opens into the conveying channel 2 with an inclination in the conveying direction.
- the conveying direction of the conveying channel 2 is indicated in FIG. 1 by a vertical arrow.
- the inclination of the return flow channel 12 is indicated in Fig. 1 by the angle ⁇ .
- the angle ⁇ is in a range of 5 ° to 40 ° in order to be able to receive at the mouth 13 of the return flow channel 12, a resulting from the Injektorzone 9 back-flowing blast air.
- a rounded transition surface 24 which is effective for the delivery channel 2 is formed at the mouth 13 of the return flow channel 12.
- Wall contours of this kind are particularly suitable for automatically guiding the return flow of the blown air, guided on the wall of the conveying channel 2, into the return flow channel 13 by the so-called Coanda effect.
- a negative pressure forms between the wall and the flow, so that the return flow is deflected out of the delivery channel 2 into the return flow channel 12.
- a suction acting on the thread inlet opening 3 is generated by the negative pressure in the mouth region of the return flow channel 13. This suction effect favors the thread inlet into the conveyor channel even with multifilament threads with broken filaments or protruding filament loops.
- the return flow channel 12 has a channel cross-section which is larger than a Channel cross-section of the conveyor channel 2 in the mouth region of the return flow channel 12. This can be additional cross-sectional extensions to accelerate the return flow of the blown air realize.
- the exemplary embodiment of the device according to the invention according to FIG. 1 is suitable for pneumatically guiding and conveying individual multifilament threads or a group of threads of a plurality of multifilament threads or a group of filaments within a melt spinning process.
- the nozzle body is formed by two nozzle halves, which are opposite to form a groove-shaped conveying channel. This can also lead to advantageous flocks of threads and filaments.
- FIG. 2 A further embodiment of the device according to the invention for the pneumatic conveying and guiding of a multifilament yarn is shown in FIG.
- the nozzle body 1 may also be formed of two nozzle halves, wherein the view of the illustration in Fig. 2 would correspond to a plan view of one of the nozzle halves.
- a delivery channel 2 is formed within the nozzle body 1, which extends between a thread inlet opening 3 and a thread outlet opening 4.
- an injector zone 9 is formed with the compressed air channels 5.1 and 5.2.
- the compressed air channels 5.1 and 5.2 are connected to the supply channels 6.1 and 6.2 with a compressed air connection port 7.
- a return flow channel 12 is formed in the nozzle body 1.
- the return flow channel 12 extends between one connected to the environment
- the opening region of the orifice 13 and the inclination angle ⁇ of the return flow channel 21 is designed substantially identical to the aforementioned embodiment, so that no further explanations take place for this purpose.
- the inflow channel 16 extends between an opening 17 on the delivery channel 2 and an inflow opening 18 which connects the inflow channel 16 to the environment.
- the inflow channel 16 opens substantially orthogonally in the delivery channel 2 opposite to the mouth 13 of the return flow channel 12.
- the inclination angle of the inflow channel 16 is indicated in Fig. 2 with the angle ß.
- the angle ⁇ is in a range of 80 ° to 100 °.
- a connecting body 21 is arranged below the nozzle body 1, which forms an upsetting chamber 19 in extension of the conveying channel 2.
- the arrival body 21 is exemplified as an additional component to the nozzle body 1.
- the connection body 21 is also possible to integrate the connection body 21 into the nozzle body 1.
- the stuffer box 19 is formed by an air-permeable stuffer box wall 20, which is surrounded by a discharge chamber 22.
- the discharge chamber 22 is connected via a discharge opening 23 with the environment.
- the exemplary embodiment of the device according to the invention shown in FIG. 2 is used for stuffer box texturing of multifilament synthetic threads.
- a compressed air via the compressed air connection opening 7 is supplied to the compressed air channels 5.1 and 5.2 during operation, so that within the conveying channel 2, a blowing air is generated in the conveying direction.
- a guided in the delivery channel 2 thread is pneumatically conveyed by the blown air and fed with high energy in the stuffer box 19.
- Within the stuffer box 19 of the multifilament yarn is upset to a yarn plug, wherein deposit the filaments in sheets and loops on the stopper surface.
- the blown air flowing back from the injector zone 9 in the direction of the thread inlet opening 3 is deflected via the mouth region of the mouth 13 of the return flow channel 12 and discharged into the environment via the return flow channel 12.
- ambient air is drawn in on the one hand from the thread inlet opening 3 and from the inflow channel 16.
- the ambient flows in across the supply channel 16 in the conveying channel 2 environment, the deflection of the returning blown air is supported, so that essentially all the backflowing blown air can be discharged via the return flow channel 13 into the environment.
- the mouth of the inflow channel 18 has an opening cross-section which is smaller than the preferably opposite mouth 13 of the return flow channel 12. This ensures that the blown-air backflow advantageously reaches the opposite side. Overlying wall abuts and thus an intensified Coanda effect for deflecting the flow occurs.
- the exemplary embodiment illustrated in FIG. 2 is particularly suitable for compressed air-operated texturing nozzles for the production of BCF yarns.
- melt spinning processes process speeds of over 2,500 m / min. achieved, which require a corresponding conveying and pulling effect.
- overpressures of the blowing air in the range of 4 to 5 bar are achieved, in order to obtain appropriate delivery energy.
- the relatively high overpressure within the injector zone 9 causes corresponding strong backflows of the Bais Kunststoff in the yarn inlet region 8, which are deflected via the interaction of the return flow channel 12 and the inflow channel 16 advantageously from the conveyor channel 2.
- the channel cross-sections of the delivery channel 2, the return flow channel 12 and the inflow channel 16 shown in the embodiment of FIGS. 1 and 2 are exemplary. It is essential here that a deflection of the return flow of the blown air initiated by the Coanda effect is possible between the thread inlet opening 3 of the conveying channel 2 and the injector zone 9.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013003408.6A DE102013003408A1 (de) | 2013-02-28 | 2013-02-28 | Vorrichtung zum pneumatischen Fördern und Führen eines multifilen Fadens |
PCT/EP2014/053014 WO2014131641A1 (de) | 2013-02-28 | 2014-02-17 | Vorrichtung zum pneumatischen fördern und führen eines multifilen fadens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2961868A1 true EP2961868A1 (de) | 2016-01-06 |
EP2961868B1 EP2961868B1 (de) | 2019-05-15 |
Family
ID=50112921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14704597.5A Active EP2961868B1 (de) | 2013-02-28 | 2014-02-17 | Vorrichtung zum pneumatischen fördern und führen eines multifilen fadens |
Country Status (5)
Country | Link |
---|---|
US (1) | US9631300B2 (de) |
EP (1) | EP2961868B1 (de) |
CN (1) | CN105026626B (de) |
DE (1) | DE102013003408A1 (de) |
WO (1) | WO2014131641A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013011888A1 (de) * | 2013-07-17 | 2015-01-22 | Oerlikon Textile Gmbh & Co. Kg | Vorrichtung zur Wärmebehandlung eines laufenden Faserstranges |
US11569009B2 (en) | 2016-12-15 | 2023-01-31 | The Boeing Company | Automated wire processing system and methods |
DE102017116302A1 (de) * | 2017-07-19 | 2019-01-24 | Maschinenfabrik Rieter Ag | Verfahren zum Betreiben einer Arbeitsstelle einer Spinn- oder Spulmaschine |
CZ2019389A3 (cs) * | 2019-06-19 | 2020-12-30 | Rieter Cz S.R.O. | Zařízení pro nasávání a dopravu příze pro uspořádání na obslužném robotu textilního stroje pro výrobu příze, obslužný robot pro obsluhu pracovního místa textilního stroje a textilní stroj |
CN111452383A (zh) * | 2020-04-20 | 2020-07-28 | 广州市联柔机械设备有限公司 | 口罩耳带输送组件及焊接装置、口罩制造设备 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2052869A (en) * | 1934-10-08 | 1936-09-01 | Coanda Henri | Device for deflecting a stream of elastic fluid projected into an elastic fluid |
US2584043A (en) * | 1945-06-20 | 1952-01-29 | American Viscose Corp | Method and apparatus for processing filamentary materials |
BE759801A (fr) * | 1969-12-04 | 1971-05-17 | Snia Viscosa | Perfectionnements apportes aux dispositifs pour ramasser, aspirer et eliminer des filaments et fils textiles, ainsi que les dispositifs perfectionnes obtenus |
JPS5526215B1 (de) * | 1971-07-12 | 1980-07-11 | ||
US3703751A (en) | 1971-07-27 | 1972-11-28 | Du Pont | Yarn treating jet |
DE2303491A1 (de) * | 1973-01-25 | 1974-08-01 | Konrad Goetzfried | Verfahren zum pneumatischen falschdrahtspinnen eines fadens und vorrichtung zum durchfuehren dieses verfahrens |
GB1519587A (en) * | 1974-07-31 | 1978-08-02 | Heathcoat & Co Ltd | Bulked yarn |
US3978558A (en) * | 1976-01-12 | 1976-09-07 | J. P. Stevens & Co., Inc. | Air jet yarn entanglement |
US4069562A (en) * | 1976-06-28 | 1978-01-24 | Glen Raven Mills, Inc. | Apparatus for producing interlaced or entangled multifilament yarns |
DE2734220A1 (de) | 1977-07-29 | 1979-02-08 | Barmag Barmer Maschf | Injektorduese zum abziehen und foerdern von faeden |
US4125922A (en) * | 1977-09-22 | 1978-11-21 | Techniservice Division, Textured Yarn Co. Inc. | Jet tangler |
JP2688428B2 (ja) * | 1987-10-05 | 1997-12-10 | マシーネンファブリク リーター アクチェンゲゼルシャフト | 熱可塑性フィラメントを連続捲縮加工する方法と装置 |
EP0539808B1 (de) * | 1991-10-26 | 1995-01-11 | Barmag Ag | Vorrichtung zum Stauchkräuseln synthetischer Filamentfäden |
DE19826654A1 (de) * | 1997-06-18 | 1998-12-24 | Barmag Barmer Maschf | Verfahren und Vorrichtung zur Herstellung eines gekräuselten, multifilen Mehrkomponentenfadens |
US6134759A (en) * | 1998-03-27 | 2000-10-24 | Toray Industries, Inc. | Apparatus for fluid treatment of yarn and a yarn composed of entangled multifilament |
DE50114368D1 (de) * | 2000-03-01 | 2008-11-13 | Oerlikon Textile Gmbh & Co Kg | Verfahren und vorrichtung zum stauchkräuseln |
DE50310137D1 (de) * | 2002-02-12 | 2008-08-28 | Rieter Ag Maschf | Textilverarbeitungsmaschine mit einem Faserförderkanal und einer Faserführungsfläche |
US7168141B2 (en) * | 2004-07-09 | 2007-01-30 | Saurer Gmbh & Co. Kg | Method and apparatus for stuffer box crimping a multifilament yarn |
EP2213774A1 (de) * | 2009-01-30 | 2010-08-04 | Oerlikon Heberlein Temco Wattwil AG | Texturiervorrichtung und Verfahren zum Texturieren von Endlosgarnen |
-
2013
- 2013-02-28 DE DE102013003408.6A patent/DE102013003408A1/de not_active Withdrawn
-
2014
- 2014-02-17 EP EP14704597.5A patent/EP2961868B1/de active Active
- 2014-02-17 WO PCT/EP2014/053014 patent/WO2014131641A1/de active Application Filing
- 2014-02-17 CN CN201480010801.4A patent/CN105026626B/zh not_active Expired - Fee Related
- 2014-02-17 US US14/770,672 patent/US9631300B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN105026626B (zh) | 2017-03-08 |
DE102013003408A1 (de) | 2014-08-28 |
WO2014131641A1 (de) | 2014-09-04 |
US20160002830A1 (en) | 2016-01-07 |
EP2961868B1 (de) | 2019-05-15 |
US9631300B2 (en) | 2017-04-25 |
CN105026626A (zh) | 2015-11-04 |
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