EP1254066A1 - Verfahren zur twistfreien lieferung eines fadens und fadenliefergerät - Google Patents
Verfahren zur twistfreien lieferung eines fadens und fadenliefergerätInfo
- Publication number
- EP1254066A1 EP1254066A1 EP01905759A EP01905759A EP1254066A1 EP 1254066 A1 EP1254066 A1 EP 1254066A1 EP 01905759 A EP01905759 A EP 01905759A EP 01905759 A EP01905759 A EP 01905759A EP 1254066 A1 EP1254066 A1 EP 1254066A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- central shaft
- twist
- delivery device
- storage drum
- 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
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/36—Measuring and cutting the weft
- D03D47/361—Drum-type weft feeding devices
-
- 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
- B65H2701/37—Tapes
Definitions
- the invention relates to a method according to the preamble of claim 1 and a thread delivery device according to the preamble of claim 3.
- the thread is fed from a supply spool to the thread delivery device without twist, in that the supply spool is rotated in accordance with the thread speed in the thread delivery device.
- the thread delivery device the thread runs through the hollow central shaft and the winding element standing outwards from it, before it is deposited in adjacent turns on the storage drum.
- the thread is first drawn inwards from the thread winding over the head of the storage drum with the circumferential thread take-off point and then further axially.
- a twist in the thread occurs with every rotation of the central shaft, ie a twist of 360 ° in the direction of rotation of the central shaft.
- a twist ie a rotation of 360 °
- every twist generated during winding would have to be removed again when pulling off and the thread would run into the textile machine without twist.
- the transition from the central shaft to the winding element represents a mechanical obstacle in the thread travel path. Since the thread is supported on the storage drum and the winding element rotates relative to the circumference of the storage drum, the winding element generates a tension in the thread. Among other things, under the influence of the tension in the belt, the obstacle shows a phenomenon that disturbs the balance between the twists generated and the twists released during unwinding.
- the invention is based on the object of specifying a method of the type mentioned at the outset and a thread delivery device which is suitable for carrying out the method and with which fabric defects and malfunctions by twists are avoided.
- each twist generated is formed regularly and in accordance with the rotation of the central shaft and immediately conveyed into the first turn on the storage drum during the operation of the thread delivery device, and retransmission of one or more twists against the direction of the thread from the point of origin at the transition from the central shaft to the Preventing winding element is maintained, the desired balance between the generated and the resolved twists is maintained. Thanks to the twisting support of the running thread in the rotating central shaft, a twist is reliably formed in each turn on the storage drum, which is released again when this turn is pulled off. As a result, the thread runs completely twist-free into the textile machine, provided that the thread has already been fed to the thread delivery device without twist.
- the incoming thread is supported and guided in a stationary manner against twisting, at least during the transition from the central shaft to the winding element, using the strip cross-section, so that the thread can only be rotated after it has emerged from the strip guide gap.
- the gap has a check valve function due to its shape and due to its position during the transition, and prevents a nascent twist from planting back against the direction of the thread or that several twists can jam.
- the stationary thread guide gap means that each twist is immediately conveyed through the winding element into the winding on the storage drum when the central shaft is rotated. In the thread winding on the storage drum, each turn contains only one Twist. This twist is released when a turn is pulled off overhead of the storage drum.
- the thread is to be supported in a form-fitting manner with each revolution of the central shaft in order to control the formation and the transport of each twist. This prevents a twist from sticking to the obstacle of the transition while the thread is running.
- the band guide gap is designed as a slot nozzle penetrating the central shaft, the gap width of the width and the gap width also exceeding the thickness of the band-like thread, preferably only slightly in each case, in order to ensure reliable twist protection of the thread.
- the tape guide gap is structurally simple at the free end of a carrier insert penetrating into the central shaft from the inlet side or even formed from its free end.
- the carrier insert is supported in a stationary manner outside the central shaft on a housing wall of the thread delivery device, such that forces resulting from the guidance of the thread and the deflection into the winding element are transmitted to the outside via the carrier insert and are absorbed on the housing wall.
- the carrier insert should not contact the rotating central shaft.
- a tube as a carrier insert is sufficiently rigid and ensures that the thread cannot get caught or tangled in its path up to the tape guide gap.
- a pinched pipe end can form the tape guide gap.
- the slot nozzle forming the tape guide gap is interchangeably attached to the carrier insert.
- a suitable slot nozzle is used.
- the slot nozzle can be exchanged together with the carrier insert if it is necessary to switch from a thread quality to a significantly different thread quality.
- the axial penetration depth of the tape guide gap into the central shaft is particularly expedient in order to be able to position the tape guide gap in an optimal axial position relative to the transition into the winding element.
- the tape guide gap should be made of slippery and wear-resistant material.
- the tape guide gap expediently has a guide section with at least approximately the same cross section. It is expedient to form the tape guide gap with a slightly widened outlet mouth.
- At least one twist recess which acts on the thread in a form-fitting manner and rotates with the central shaft, is provided in the transition.
- the twist depression not only softens the deflection of the thread, but also assists in the positive rotation of the central shaft to form the twist.
- twist recess in the hollow of the knee between the hollow inner channel of the central shaft and a tube channel of the winding element.
- the thread emerging from the stationary tape guide gap and deflected into the tube channel of the winding element is gripped by the recess and carried along in the direction of rotation.
- a closed inner eyelet or an inner part eyelet can be provided in the transition, in which the twist recess is shaped.
- the inner part eyelet can only extend approximately over the width of the twist recess.
- a V-shaped incision as a twist recess is technically simple, the incision base roughly halving the kink angle between the central shaft and the winding element. This ensures a gentle deflection of the thread and a weakening of the obstacle at the transition.
- the carrier insert is mounted on the housing wall with the aid of a fastening part.
- the fastening part can be in the form of a cap in order to ensure stable support.
- This cap can define a receiving space for a sensor which is used for other tasks in this area of the thread feeder.
- Fig. 1 shows a longitudinal section through a yarn delivery device
- Fig. 2 is an enlarged, in Fig. 1 highlighted by a circle section of the yarn feeder.
- a thread delivery device F in FIG. 1 contains in a housing 1 a drive motor M for a central shaft S which is hollow in its section 4 leading to a housing wall 2.
- the central shaft S supports a coaxial storage drum D in a conventional manner that is not highlighted in more detail.
- the storage drum D is rotatable on the central shaft S and is held against rotation by magnets 3 (stationary storage drum).
- a winding element W extends obliquely outwards from the central shaft S, which has an internal tube channel 6 'and a winding tube 6 which extends it and is incorporated into a winding disc 5 which rotates between the housing 1 and the storage drum D.
- a thread eyelet C is fitted in an outlet 12 of the winding element W.
- the cavity 4 of the central shaft S and the winding element W define a thread travel path for a thread Y, which is deflected coming from the left at the transition 7 in FIG. 1, passes through the winding element W, is deflected at the thread eyelet C and on the outer circumference of the storage drum D is wound in successive and adjacent turns in a thread winding H forming an intermediate supply.
- the thread Y is drawn overhead from the thread reel H of the storage drum D, that is to say with a circumferential thread draw-off point over its circumferential draw-off edge 11 through a thread brake B, to a draw-off eyelet E2 coaxial with the storage drum D and through this further to a textile machine, not shown, for example one Loom, delivered.
- the thread Y originally comes from a thread supply, not shown, for example a thread spool.
- the thread Y Due to the rotary movement of the central shaft S with the winding element W, the thread Y is drawn into the thread delivery device F at a thread speed corresponding to the rotational speed.
- the thread winding H is held on the storage drum D with a size set by sensors that are not shown in detail.
- the textile machine consumes the thread Y intermittently in the case of a weaving machine, the motor M being driven faster or slower to maintain the thread winder H with the predetermined size. If there is no consumption, the engine M is stopped.
- the thread delivery device F described so far is conventional.
- the thread delivery device shown according to the invention is intended for processing threads Y with a ribbon-like character.
- Such threads can be, for example, polypropylene monofilaments, so-called Lurex threads, tapes or foil tapes, the common characteristic of which is at least approximately a rectangular cross-section with a tape width exceeding the tape thickness.
- the cross section does not necessarily have to correspond to a rectangle, but could also be oval, biconcave or biconvex.
- Such threads often have to be processed without twist, because twists introduced into the end product produce visible and tactile fabric defects or lead to thread breaks or other faults or, in the case of particularly strong threads with a band-like character, for example carbon threads, when passing through scanning or braking devices along the Thread travel can result in malfunctions.
- measures are taken upstream of the thread delivery device F in order to insert the thread from the thread supply into the thread delivery device F without twist.
- the thread bobbin is rotated in accordance with the thread speed in the thread delivery device in such a way that the point of withdrawal of the thread from the thread bobbin remains in space.
- Another possibility is to unwind the thread tangentially from a cylindrical thread spool and to rotate the thread spool in the take-off direction at the thread speed in the thread delivery device.
- this type of construction forms a 360 ° twist at the transition 7 at every full revolution, which is eliminated again when the head is drawn off.
- the thread delivery device F should theoretically have no influence on the twist-free processing of thread already fed without twist.
- This imbalance then leads to either an overhead deduction Counter-twisted is formed and introduced into the textile machine or only one of the several twists is dissolved in one turn and the remaining ones run into the textile machine.
- the thread delivery device F is provided with additional equipment.
- a tape guide gap G is positioned stationary, which (FIG. 2) is shaped like a slot nozzle, the gap width of which is slightly larger than the tape thickness and the gap width is greater than the bandwidth of thread Y with a band-like character.
- the band guide gap G is arranged on a carrier insert A, for example a tube 8.
- the carrier insert A is inserted into the hollow section 4 of the central shaft S from the inlet end and is positioned by a holding element 9 which can be attached, for example, to the housing wall 2.
- the holding element 9 contains a thread eyelet E1 on the inlet side and defines here a cavity 10 in which, for example, a sensor can be accommodated.
- the band guide gap G which is designed as a slot nozzle, is formed with a guide section 15 which extends in the thread running direction or parallel to the axis of the central shaft S and an outlet opening 16 which is, for example, widened in a rounded manner.
- the front end of the carrier insert A which is designed as a tube 8, is shaped conically tapering or squeezed together (at 14).
- the tape guide gap G is thus formed by the free end of the tube 8.
- the carrier insert A could also be a rod or double rod, which positions an interchangeably attached slot nozzle.
- the depth of penetration of the tape guide gap E into the central shaft S can be adjustable. It is also conceivable to extend the tape guide gap G over a larger part or the entire depth of penetration.
- a twist recess N for example in the form of a V-cut, is formed in the transition 7, the cut base 13 of which is roughly halved the deflection angle between the axis of the central shaft S and the winding element W.
- the twist recess N is provided on the inner hollow of the knee of the transition 7.
- the tape guide gap G is positioned, for example in the axis of the central shaft S, that the emerging thread reliably runs into the twist recess N and is carried along by it.
- the stationary positioned tape guide gap G acts like a check valve, which not only prevents a twist from jamming in front of the transition 7, but also ensures that twists deform back into the hollow section 4 of the central shaft S against the direction of the thread. Rather, each twist is reliably carried along with the running thread during its formation and brought into the first turn on the storage drum D, so that ultimately every turn in the thread winding H contains a 360 ° twist T, which is reliably dissolved again when the head is drawn off.
- the twist recess N acts in a form-fitting manner by ensuring the correct shaping and the immediate removal of the nascent twist and by mitigating the mechanical effect of the obstacle of the transition 7 for the transport of the twist. However, the twist recess N is not absolutely necessary.
- the thread Y is supported and guided against twisting immediately before the transition 7, the guiding suppresses the reshaping of twists against the direction of travel, and so any twist being created is immediately transported further through the winding element W.
- the twist recess N supports the correct shaping of each twist and the unimpeded further transport of the nascent twist.
- the thread introduced into the thread delivery device F without twist leaves the thread delivery device reliably without twist.
- the tape guide gap G is expediently formed from sliding-resistant and wear-resistant material or at least covered with such material.
- a so-called central eyelet made of slippery and wear-resistant material can be positioned in the transition 7, which is closed in the circumferential direction or at least extends over the circumferential area of the twist recess N.
- the carrier insert A with the tape guide gap G can be removed when not in use. It can also be a retrofit part with which conventional thread delivery devices can subsequently be converted into twist-free thread delivery devices.
- the storage drum D which is only indicated schematically, can be a rod cage with rods which can be moved relative to one another in order to produce a thread separation (axial spacing between the turns in the thread winding H).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Knitting Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10006142 | 2000-02-11 | ||
DE10006142A DE10006142A1 (de) | 2000-02-11 | 2000-02-11 | Verfahren zur twistfreien Lieferung eines Fadens und Fadenliefergerät |
PCT/EP2001/001455 WO2001058794A1 (de) | 2000-02-11 | 2001-02-09 | Verfahren zur twistfreien lieferung eines fadens und fadenliefergerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1254066A1 true EP1254066A1 (de) | 2002-11-06 |
EP1254066B1 EP1254066B1 (de) | 2004-08-11 |
Family
ID=7630614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01905759A Expired - Lifetime EP1254066B1 (de) | 2000-02-11 | 2001-02-09 | Verfahren zur twistfreien lieferung eines fadens und fadenliefergerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US6726139B2 (de) |
EP (1) | EP1254066B1 (de) |
CN (1) | CN100347061C (de) |
DE (2) | DE10006142A1 (de) |
WO (1) | WO2001058794A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10107688A1 (de) * | 2001-02-19 | 2002-08-29 | Iro Patent Ag Baar | Fadenliefergerät |
US7134458B2 (en) * | 2001-10-01 | 2006-11-14 | Toray Industries, Inc. | Method of producing reinforcing fiber woven fabric and production device therefor and reinforcing fiber woven fabric |
WO2013165903A1 (en) * | 2012-04-30 | 2013-11-07 | Adc Telecommunications , Inc. | Cable storage spool with center feed |
US10389281B2 (en) | 2016-10-20 | 2019-08-20 | Texas Instruments Incorporated | Correcting offset and gain drift related angle errors with motor position detectors |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3776480A (en) * | 1972-04-05 | 1973-12-04 | Lawson Hemphill | Yarn handling apparatus |
US4208017A (en) * | 1977-01-31 | 1980-06-17 | Yazaki Corporation | Apparatus for temporary stock dispenser of wire |
JPS57149532A (en) * | 1981-03-06 | 1982-09-16 | Tsudakoma Ind Co Ltd | Weft yarn storing apparatus for fluid jet type loom |
US4476904A (en) * | 1981-12-26 | 1984-10-16 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Device for measuring the length of a weft |
CZ282501B6 (cs) * | 1988-10-07 | 1997-07-16 | Iro Ab | Zařízení na ukládání a podávání niti pro textilní stroje |
DE59006101D1 (de) * | 1989-05-12 | 1994-07-21 | Dornier Gmbh Lindauer | Fadenlieferverfahren und Abspuleinrichtung für Garne zur Durchführung des Verfahrens. |
DE3915491A1 (de) * | 1989-05-12 | 1990-11-15 | Dornier Gmbh Lindauer | Abspuleinrichtung fuer garne |
US5211347A (en) * | 1990-06-29 | 1993-05-18 | Sobrevin Societe De Brevets Industriels-Etablissement | Thread feed device |
EP0505317A1 (de) * | 1991-03-19 | 1992-09-23 | Gebrüder Sulzer Aktiengesellschaft | Fadenführungsvorrichtung an einer Webmaschine mit ortsfester Schussfaden-Vorratsspule |
KR100307849B1 (ko) * | 1992-12-03 | 2001-11-30 | 브롬 스티그-아르네 | 실이송장치 |
DE19533310A1 (de) * | 1995-07-24 | 1997-01-30 | Iro Ab | Fadenliefergerät |
DE19841699A1 (de) * | 1998-09-11 | 2000-03-16 | Iro Patent Ag | Fadenverarbeitungssystem |
FR2794617B1 (fr) * | 1999-06-09 | 2001-08-03 | Id & | Bande tissee pour former une echarpe comprenant un fil constitue d'une bande plastique retroreflechissante |
-
2000
- 2000-02-11 DE DE10006142A patent/DE10006142A1/de not_active Withdrawn
-
2001
- 2001-02-09 US US10/203,702 patent/US6726139B2/en not_active Expired - Fee Related
- 2001-02-09 EP EP01905759A patent/EP1254066B1/de not_active Expired - Lifetime
- 2001-02-09 DE DE50103218T patent/DE50103218D1/de not_active Expired - Lifetime
- 2001-02-09 WO PCT/EP2001/001455 patent/WO2001058794A1/de active IP Right Grant
- 2001-02-09 CN CNB018048323A patent/CN100347061C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0158794A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50103218D1 (de) | 2004-09-16 |
EP1254066B1 (de) | 2004-08-11 |
CN1400953A (zh) | 2003-03-05 |
US6726139B2 (en) | 2004-04-27 |
US20030122018A1 (en) | 2003-07-03 |
WO2001058794A1 (de) | 2001-08-16 |
DE10006142A1 (de) | 2001-08-16 |
CN100347061C (zh) | 2007-11-07 |
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