EP1664402B1 - Streckwerk für spinnmaschinen - Google Patents

Streckwerk für spinnmaschinen Download PDF

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Publication number
EP1664402B1
EP1664402B1 EP04763318A EP04763318A EP1664402B1 EP 1664402 B1 EP1664402 B1 EP 1664402B1 EP 04763318 A EP04763318 A EP 04763318A EP 04763318 A EP04763318 A EP 04763318A EP 1664402 B1 EP1664402 B1 EP 1664402B1
Authority
EP
European Patent Office
Prior art keywords
delivery roller
drafting unit
unit according
fiber structure
nip
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.)
Expired - Lifetime
Application number
EP04763318A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1664402A1 (de
Inventor
Gerd Stahlecker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1664402A1 publication Critical patent/EP1664402A1/de
Application granted granted Critical
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to a drafting system for spinning machines with a driven delivery roller, which are associated with two pressure rollers, which form with the delivery roller two successive nip lines, between which the fully drawn fiber structure passes through a compression zone.
  • a drafting system of this type is the prior art by the patent AT 397 823 B.
  • the delivery roller of the known drafting system has a perforated peripheral surface. Inside the delivery roller is a suction zone, which is directed with a suction slot against the perforation.
  • the finished stretched fiber structure is thus compressed between the two pressure rollers as a result of the targeted suction, resulting in an advantageous fiber bundling.
  • the suction slot can be deflected sideways, so that there is an arcuate suction zone.
  • the invention is based on the object of compacting the finished stretched fiber structure with simpler structural means, without a suction roll and the suction devices required for this purpose being required in a complex manner.
  • the object is achieved in that in the compression zone the fiber structure leading baffles are provided.
  • a normal, non-perforated delivery roller of a drafting system can be used, which expediently only needs to be slightly enlarged in diameter.
  • any pneumatic ancillary equipment can be omitted.
  • the finished stretched fiber structure is guided mechanically between the two nip lines in such a way that the fiber structure is compacted and the edge fibers are incorporated.
  • the distance between the two nip lines of the pressure rollers should be smaller than the average staple length of the fibers to be spun.
  • the baffles can be designed very differently.
  • a compressor is provided between the two pressure rollers, wherein the guide walls are formed by a V-shaped guide groove. Due to the circumferential curvature of the delivery roller of the fiber bundle to be compacted is drawn into the narrow groove bottom, so that at this point a compression takes place. Since the compacted fiber structure subsequently passes through a nip line, no large spinning triangle is formed in the yarn before the spinning spin is issued.
  • the baffles may be formed by two in the axial direction of the delivery roller offset from each other compressor.
  • the course of the fiber structure is thereby deflected laterally between the two nip lines from the normal transport direction. Due to the different direction of the surface speed of the delivery roller and the actual transport direction of the fiber structure creates a relative movement, which exerts a torsional moment on the fibers due to the friction. Also by this measure, edge fibers can be devoured with the actual fiber structure.
  • the baffles are connected to pincer-like holding parts which rest on the delivery roller.
  • This can for example be designed so that the holding parts are made of plastic, which is clipped to the periphery of the delivery roller laterally next to the pressure rollers.
  • the baffles thus "ride” in a sense on the delivery roller.
  • the delivery roller associated pressure rollers are wrapped by a strap, which in the Compaction zone rests on the fiber structure, without being clamped to the nip lines.
  • the clamping of the strap at the nip lines can be avoided in a simple manner in that the strap is arranged slightly recessed relative to the peripheral surface of the pressure rollers. It only needs to be ensured that the strap between the nip lines touches the fiber structure from above. Thereby, a desired, occurring as a temporary false twist rotation in the compression zone can be introduced into the fiber structure, resulting in an integration of the edge fibers.
  • the drawing unit 1 only partially shown in Figures 1 to 3 belongs to a spinning machine, preferably a ring spinning machine.
  • the drafting system 1 is shown only in the region of its driven, in the machine longitudinal direction continuous feed roller 2, ie in the drafting roller exit roller.
  • two pressure rollers 3 and 4 are pressed elastically.
  • the pressure rollers 3 and 4 have a fixed distance from each other. They form with the delivery roller 2 a first nip line 5 and subsequently, after a circumferential distance of about 45 ° to 90 °, a second nip line 6.
  • the distance between the nip lines 5 and 6 from each other, between which there is no more delay, should be smaller than that Staple length of the fibers to be spun.
  • the pressure rollers 3 and 4 may be combined with the corresponding pressure rollers of adjacent spinning stations in a known manner to Druckwalzenzwillingen.
  • FIG. 2 the axes 7 and 8 of the pressure rollers 3 and 4 can be seen for this purpose.
  • a sliver or roving 12 to be stretched is guided in the direction of transport A through the drafting system 1.
  • Behind the first nip line 5 there is an already fully drawn fiber structure 13, which is to be bundled in a compression zone 15 between the two nip lines 5 and 6. In this case, edge fibers are to be wound around the fiber structure 13.
  • the thread 14 is formed, which is supplied in the direction of delivery B a swirl member, not shown, for example, a ring spindle, which gives the thread 14 the required spin twist.
  • the mentioned compression zone 15 is formed between the two clamping lines 5 and 6 by baffles 16. These guide the fiber structure 13 into the bottom of a V-shaped guide groove 18 of a compressor 17, see in particular also FIG. 3.
  • the guide groove 18 is additionally tapered in the transport direction A.
  • the fiber structure 13 is pressed into the bottom of the guide groove 18, whereby it compacts in the desired manner. This gives a better substance utilization of the fibers, which is accompanied by an increased tensile strength of the spun yarn 14 and a lower hairiness.
  • baffles 16 compressor 17 is connected via two connecting webs 21 with pincer-like holding parts 19 and 20, which are made of plastic and are clipped onto the delivery roller 2 so that they ride on the delivery roller 2.
  • the compressor 17 can thereby engage in the wedge gap between the delivery roller 2 and the second pressure roller 4, so that the guide walls 16 are positionally secured in the transport direction A.
  • the distance of the holding parts 19 and 20 from each other in the axial direction of the delivery roller 2 is only slightly larger than the width of the pressure rollers 3 and 4.
  • FIG. 4 and 5 differs from the previously described embodiment essentially in that in the compression zone 15 instead of the previously described baffles 16 now baffles 22 and 23 are provided, which are offset in the axial direction of the feed roller 2 slightly to each other. As a result, in the compression zone 15 of the fiber structure 13 from its normal transport direction A laterally be deflected something.
  • the baffles 22 and 23 are formed by a first compressor 24 and a second compressor 25.
  • the first compressor 24 follows directly the nip line 5, while the second compressor 25 is located directly in front of the second nip line 6. Both compressors 24 and 25 are thus within the compression zone 15 between the two nip lines 5 and 6 of the two pressure rollers 3 and 4.
  • a first additional compressor 26 to be provided in the transport direction A in front of the first nip line 5, and a second auxiliary compressor 27 for the second nip line 6.
  • the sliver or roving 12 runs between the guide surface of the first auxiliary compressor 26 and the circumference of the delivery roller 2, while the supply roller 2 leaving thread 14 is located between the guide surface of the second auxiliary compressor 27 and the peripheral surface of the delivery roller 2.
  • the second additional compressor 27 acts as an additional swirl barrier with respect to the spinning swirl.
  • the two compressors 24 and 25 as well as the two additional compressors 26 and 27 are connected to the already described tong-like holding parts 19 and 20 via connecting webs 28, 29, 30 and 31.
  • FIG. 6 and 7 is - compared to the embodiment of Figures 4 and. 5 - additionally provided that the delivery roller 2 associated pressure rollers 3 and 4 are looped by a strap 32.
  • the strap 32 is arranged so that it only passes over the compression zone 15 and is not clamped to the nip lines 5 and 6. This can be achieved by providing the pressure rollers 3 and 4 for the strap 32 with a corresponding small circumferential groove in which the strap 32 runs.
  • the strap 32 is so narrow that it can run in the transport direction A between the first compressor 24 and the second compressor 25.
  • the strap 32 increases the contact pressure of the fiber structure 13 to the delivery roller 2 and ensures even better compression in the compression zone 15.

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)
EP04763318A 2003-09-24 2004-07-17 Streckwerk für spinnmaschinen Expired - Lifetime EP1664402B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10346258A DE10346258A1 (de) 2003-09-24 2003-09-24 Streckwerk für Spinnmaschinen
PCT/EP2004/008022 WO2005040467A1 (de) 2003-09-24 2004-07-17 Streckwerk für spinnmaschinen

Publications (2)

Publication Number Publication Date
EP1664402A1 EP1664402A1 (de) 2006-06-07
EP1664402B1 true EP1664402B1 (de) 2007-05-23

Family

ID=34353332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04763318A Expired - Lifetime EP1664402B1 (de) 2003-09-24 2004-07-17 Streckwerk für spinnmaschinen

Country Status (5)

Country Link
EP (1) EP1664402B1 (zh)
CN (1) CN1856601B (zh)
AT (1) ATE363000T1 (zh)
DE (2) DE10346258A1 (zh)
WO (1) WO2005040467A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006282A1 (de) * 2007-02-01 2008-08-07 Wilhelm Stahlecker Gmbh Streckwerk mit Verdichtungszone
DE102007024234B4 (de) * 2007-05-21 2022-06-23 Wilhelm Stahlecker Gmbh Streckwerk zum Verziehen eines Faserverbandes
DE102007049337A1 (de) * 2007-10-12 2009-04-16 Wilhelm Stahlecker Gmbh Streckwerk zum Verziehen eines Faserverbandes
DE102008011492A1 (de) * 2008-02-20 2009-08-27 Wilhelm Stahlecker Gmbh Verdichter für eine Faserverdichtungseinrichtung und Pufferelement
DE102008057667A1 (de) * 2008-04-24 2009-10-29 Wilhelm Stahlecker Gmbh Verdichtereinheit für ein Streckwerk einer Textilmaschine
CN101435121B (zh) * 2008-12-11 2012-07-18 朱爱萍 带控纱的紧密纺纱器
CN101580982B (zh) * 2009-06-18 2011-01-12 朱爱萍 机械式立体紧密纺纱装置
DE102012103610A1 (de) * 2012-04-25 2013-10-31 Rieter Ingolstadt Gmbh Textilmaschine mit wengistens einer mehrere magnetische Bereiche aufweisenden Belastungswalze
CN103469384A (zh) * 2013-09-13 2013-12-25 常熟市建华织造有限责任公司 一种耐磨型紧密纺用网格圈
DE102015104808A1 (de) * 2015-03-27 2016-09-29 Maschinenfabrik Rieter Ag Verdichtereinheit
EP3521488A1 (de) * 2018-02-06 2019-08-07 Maschinenfabrik Rieter AG Verdichtereinheit
DE102018126844A1 (de) * 2018-02-06 2019-08-08 Maschinenfabrik Rieter Ag Verdichtereinheit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450251A (en) * 1945-04-13 1948-09-28 Casablancas High Draft Co Ltd Collector for textile drafting mechanisms
GB691273A (en) * 1950-11-15 1953-05-06 Eric Cottam Improvements in devices for condensing textile fibres in spinning or like machines
US5577298A (en) * 1994-03-17 1996-11-26 Hollingsworth Saco Lowell, Inc. Condenser and method of thread-up
DE4426249C2 (de) * 1994-07-25 2003-08-07 Rieter Ag Maschf Spinnverfahren und Spinnmaschine mit abgedeckter Saugwalze am Streckwerk
DE19537470A1 (de) * 1995-10-07 1997-05-07 Stahlecker Fritz Streckwerk für Spinnereimaschinen
EP0893519B1 (de) * 1997-07-17 2002-11-06 Zinser Textilmaschinen GmbH Luntenverdichter in einem Streckwerk einer Spinnmaschine

Also Published As

Publication number Publication date
WO2005040467A1 (de) 2005-05-06
DE10346258A1 (de) 2005-04-21
CN1856601A (zh) 2006-11-01
DE502004003902D1 (de) 2007-07-05
ATE363000T1 (de) 2007-06-15
EP1664402A1 (de) 2006-06-07
CN1856601B (zh) 2010-09-01

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