EP0574659B1 - Procédé et dispositif pour séparer un ruban de fibres délivré dans une boîte à un banc d'étirage - Google Patents

Procédé et dispositif pour séparer un ruban de fibres délivré dans une boîte à un banc d'étirage Download PDF

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Publication number
EP0574659B1
EP0574659B1 EP93104391A EP93104391A EP0574659B1 EP 0574659 B1 EP0574659 B1 EP 0574659B1 EP 93104391 A EP93104391 A EP 93104391A EP 93104391 A EP93104391 A EP 93104391A EP 0574659 B1 EP0574659 B1 EP 0574659B1
Authority
EP
European Patent Office
Prior art keywords
sliver
guide channel
compressed
nozzles
nozzle
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
EP93104391A
Other languages
German (de)
English (en)
Other versions
EP0574659A1 (fr
Inventor
Albert Kriegler
Alfons Zehndbauer
Michael Strobel
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
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Filing date
Publication date
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0574659A1 publication Critical patent/EP0574659A1/fr
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Publication of EP0574659B1 publication Critical patent/EP0574659B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0428—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements for cans, boxes and other receptacles
    • B65H67/0434—Transferring material devices between full and empty cans
    • 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

Definitions

  • the invention relates to a method and a device for separating a short-staple, textile sliver that is supplied by a drafting system and stored in cans.
  • the point of separation is between the pair of calender rolls (strip take-off roll) and the area of the strip guide channel. When the can has reached the filling level, the sliver must be reliably separated.
  • DE-OS 29 47 342 which corresponds to the preamble of claims 1 and 12, describes a device for separating a textile sliver, the filled jug being under the turntable.
  • the sliver is separated by means of compressed air which is passed through a nozzle.
  • the nozzle is connected to a compressed air tank via a valve and is arranged at the outlet of the strip take-off rollers.
  • the valve is actuated with each can change and opens briefly so that the compressed air emerging from the nozzle hits the inlet opening of the belt guide channel.
  • the usual pitchers have a movable spring plate with compression spring, which is arranged on the bottom of the spring plate.
  • the spring plate lowers as the band filling increases. Due to the compression spring, the spring plate always presses the sliver onto the turntable.
  • This layer of sliver, bridging the gap between the top of the can and the turntable, is called the can mushroom.
  • This jug of mushrooms presses on the turntable. The mouth of the turntable is closed by the jug.
  • Another disadvantage is that the necessary tension only arises when the cans are full, where the filling material (fiber sliver) is pressed tightly onto the turntable. If the filling status of the cans is varied, there are difficulties with the belt separation.
  • the reliability of the tape separation is further reduced in that the position of the tape at the inlet opening of the tape guide channel can not always be central, but offset, so that the air flow directed to the center of the inlet opening of the tape guide channel does not always hit the tape.
  • the object of the invention is to improve the reliability of the band separation with compressed air in the region of the band guide channel when changing cans on the line.
  • the object is achieved according to the method in that the tape delivery in the can is stopped, the mouth of the tape guide channel in the turntable is cleared by moving the can and now a strong stream of compressed air is directed into the inlet opening of the tape guide channel, so that this compressed air flow within the tape guide channel Sliver separates.
  • the compressed air can flow through and securely shred the tape and thus separate it.
  • the compressed air flow can be guided into the inlet opening of the tape guide channel.
  • a slightly frayed band can still be separated by the tension that can be generated in the band guide channel. This is particularly advantageous if the tape has not been broken completely. This can happen when processing different sliver materials.
  • the compressed air flow can be divided into several compressed air flows.
  • the division takes place in such a way that either the compressed air streams run side by side or distributed in a circular manner into the interior of the tape guide channel.
  • the belt is centered by blowing the outer compressed air flows somewhat earlier than the internal compressed air flows.
  • the height of the compressed air streams can be adjusted and fixed in relation to the opening of the sliver guide channel.
  • Another feature is that the sliver is given a defined length by the separation and hangs on the edge of the can.
  • a nozzle directly at the inlet opening of the tape guide channel directs a stream of compressed air into the tape guide channel, so that the tape is reliably defibrated and thus breaks.
  • the air stream can be divided into several individual streams, which are put into operation at different times, so that the sliver is centered in the sliver guide channel before separation.
  • one or more nozzles are arranged at the edge of the inlet opening of the tape guide channel.
  • the blowing direction is inclined approx. 45 ° to the belt and directed into the inlet opening of the belt guide channel.
  • the nozzles are arranged next to one another or in a circle with a blowing direction in the band guide channel.
  • a single nozzle like the nozzles arranged next to one another, is pivotably mounted in one plane over an angular range of 90 ° (perpendicular to parallel to the belt).
  • the circularly arranged nozzles can also be adjusted vertically to open the band guide channel at different heights.
  • the circular nozzles are attached to a nozzle plate, which is connected to an adjustable backdrop. The height of the nozzle plate relative to the opening of the band guide channel can be changed and fixed.
  • the invention has the advantage that the reliability of the pneumatic belt separation was noticeably increased, regardless of the filling status of the can.
  • Compressed air (approx. 6-8 bar), which is led directly into the band guide channel 4 at the mouth at an angle of approximately 45 °, creates a suction that grips the band and frayed it in the upper third of the band guide channel 4.
  • the inclination of the compressed air flow at an angle of approx. 45 ° to the belt also ensures that all compressed air enters the duct and exits at the bottom of the duct (mouth) can, which will certainly break the tape. This is an essential feature for a safe band separation, so that the method also works with different filling states of the can.
  • the compressed air can be divided into a plurality of compressed air flows, all of which are directed into the inlet opening of the band guide channel.
  • Figure 2 shows an embodiment. 4 nozzles are arranged side by side on the edge of the inlet opening of the tape guide channel 4. Their blowing direction is arranged in parallel. All 4 nozzles are operated with compressed air.
  • the two outer nozzles 6.1 and 6.2 are supplied with compressed air somewhat earlier than the two middle (inner) nozzles 6.3 and 6.4. This has the effect that the two outer nozzles 6.1 and 6.2 center the sliver 1 and thus the sliver is guided in the full blowing direction of the two middle nozzles 6.3 and 6.4, so that the compressed air of the two middle nozzles 6.3 and 6.4 which subsequently sets in the sliver 1 certainly hits and frayed so that it breaks.
  • the nozzles are thus operated with a time delay and approximately three air blasts are carried out, so that the fiber sliver is separated by the air blasts and the lower end is ejected from the band guide channel, so that it hangs down at the can edge in a defined length.
  • FIG. 3 shows an arrangement according to which the fiber band is separated by means of six convergent nozzles arranged in a circle around the band guide channel 4. In each case three nozzles 6.5, 6.6, 6.7 are arranged in a nozzle plate 11. The opposite nozzle plate is covered.
  • FIG. 3 shows a side view of one of these nozzle plates 11.
  • Figure 4 shows the arrangement of the three individual nozzles on the nozzle plate 11. It can be seen that the two nozzle plates lie symmetrically in one plane. The nozzles 6.5 to 6.10 are arranged at a height above the opening of the band guide channel 4. Nozzles 6.6 and 6.9 lie opposite each other on the imaginary axis of symmetry of the nozzle plates 11. The two outer nozzles of the nozzle plate are each offset by an angle of 56 ° with respect to these nozzles, which are arranged centrally on the nozzle plate.
  • the nozzles are incorporated in the nozzle plate so that their air jet hits the sliver at an acute angle.
  • the supply of compressed air takes place via pipe socket 14.
  • a hose feed line, which supplies the compressed air, is plugged onto this pipe socket 14.
  • the nozzle plate 11 is carried by a holder 12 which is connected to a displaceable link 13. This also applies to the nozzle plate on the opposite side.
  • the backdrop 13 is vertically displaceable, that is, a stroke relative to the edge of the opening of the tape guide channel 4 is continuously adjustable. This vertical adjustability of the nozzle plate 11 enables an optimal adjustment of the height of the nozzles relative to the opening edge of the tape guide channel.
  • the setting is important from the following point of view: since the belt is clamped between the take-off rollers, it is separated with the arrangement according to the invention approximately one stack length below the clamping point of the take-off rollers.
  • Figure 5 shows a further possible embodiment of the invention.
  • An arrangement of two outer nozzles 6.11 and 6.12 and a movable nozzle 6.13 arranged in the center is shown (two such nozzles can also be next to one another).
  • the nozzles are operated with a time delay, ie the two outer nozzles 6.11 and 6.12 are supplied with compressed air somewhat more (via the feed line 21) than the centrally arranged nozzle 6.13 (via the feed line 20).
  • the two outer nozzles center the sliver during blowing.
  • a short time later (a few tenths of a second) the middle nozzle 6.13 is supplied with compressed air.
  • the nozzle 6.13 is a portable nozzle.
  • the nozzle 6.13 can be displaced in its axial direction towards the sliver.
  • the shift becomes possible when the nozzle 6.13 is supplied with compressed air.
  • the movable body 16 is pressed against the ring spring 17 so that the nozzle 6.13, as an extension of the movable body 16, is pressed and positioned in the immediate vicinity of the sliver 1.
  • the movable body 16 is guided in a guide 15.
  • the nozzle 6.13 additionally carries a bracket 18 in order to detect and avoid the whole of the sliver 1 if it comes into contact with it, that the nozzle is partially immersed in the sliver.
  • This design increases the safety of the belt separation by the proximity that can be achieved between the nozzle and the fiber belt, and it becomes possible to use compressed air at a lower pressure. This reduces the operating costs.

Landscapes

  • Spinning Or Twisting Of Yarns (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (21)

  1. Procédé de séparation d'un ruban de fibres livré dans un pot sur un banc d'étirage, selon lequel les pots emplis sont remplacés, on utilise un disque rotatif comportant un canal de guidage du ruban pour le dépôt du ruban dans le pot et la séparation de coupure du ruban a lieu à l'aide d'air comprimé, procédé caractérisé en ce que la livraison du ruban dans le pot est interrompue, l'embouchure du canal (4) de guidage du ruban dans le disque rotatif (5) est libérée par déplacement en translation du pot (10) et un fort courant d'air comprimé est dirigé dans l'orifice d'entrée du canal (4) de guidage du ruban de sorte que ce courant d'air comprimé sépare le ruban (1) des fibres à l'intérieur du canal (4) de guidage du ruban.
  2. Procédé selon la revendication 1, caractérisé en ce qu'immédiatement après que le pot (10) ait été décalé vers l'extérieur par dessus le bord du disque tournant (5), le courant d'air comprimé est dirigé dans l'orifice d'entrée du canal (4) de guidage du ruban.
  3. Procédé selon la revendication 2, caractérisé en ce qu'avec la poursuite du déplacement du pot (10) jusqu'à sa position terminale, un ruban un peu désagrégé est séparé, sous l'effet de la mise sous tension du ruban de fibres, dans le canal (4) de guidage du ruban.
  4. Procédé selon la revendication 1, caractérisé en ce que le courant d'air comprimé est subdivisé en plusieurs courants d'air comprimé.
  5. Procédé selon la revendication 4, caractérisé en ce que les courants d'air comprimé soufflent l'un à côté de l'autre du bord de l'orifice d'entrée du canal (4) de guidage du ruban vers l'intérieur de ce canal (4) de guidage du ruban.
  6. Procédé selon l'une des revendications 4 et 5, caractérisé en ce que les courants extérieurs d'air comprimé soufflent un peu plus tôt dans le temps, de sorte que le ruban (1) des fibres est centré dans le canal (4) de guidage du ruban et des courants d'air comprimés, situés à l'intérieur et qui soufflent un peu plus tard dans le temps, rencontrent sûrement le ruban (1) de fibres et le désagrègent à l'intérieur du canal (4) de guidage du ruban, de sorte que ce ruban se casse.
  7. Procédé selon la revendication 4, caractérisé en ce que les courants d'air comprimé sont guidés en étant répartis en cercle autour de l'orifice d'entrée du canal (4) de guidage du ruban et, en raison de leur inclinaison par rapport au ruban (20) des fibres, ces courants d'air sont dirigés de façon centrée vers l'intérieur du canal (4) de guidage du ruban.
  8. Procédé selon l'une des revendications 5 à 7, caractérisé en ce que les courants d'air comprimé peuvent être soulevés ou abaissés, ensemble ou séparément, par rapport à l'orifice d'entrée du canal (4) de guidage du ruban des fibres pour pouvoir corriger le point de cassure dans le ruban des fibres en fonction de la longueur des fibres coupées (faisant partie) du ruban (1) de fibres que l'on utilise.
  9. Procédé selon la revendication 8, caractérisé en ce que le ruban (1) de fibres est séparé à environ une longueur de fibres coupées au-dessous du point de serrage des cylindres (3) délivreurs du ruban, ce qui effile en pointe l'extrémité du ruban demeurant après les cylindres (3) délivreurs de ruban.
  10. Procedé selon l'une des revendications 1 à 4, caractérisé en ce que l'extrémité inférieure du ruban des fibres est refoulée par l'air comprimé vers l'extérieur du canal (4) de guidage du ruban et pend au bord du pot (10).
  11. Procédé selon l'une des revendications 5 à 6, caractérisé en ce qu'une buse (6.13), qui souffle un peu plus tard, est une buse disposée dans une zone médiane entre des buses extérieures (6.11 et 6.12) et qui est déplacée au début de son envoi d'un jet, de sa position de départ en direction axiale vers le ruban des fibres et, à l'achèvement de son envoi d'un jet, revient à sa position de départ.
  12. Dispositif pour séparer un ruban (1) de fibres livré dans un pot (10) sur un banc d'étirage, dans lequel les pots (10) emplis sont remplacés et l'on prévoit l'existence de cylindres (1) délivreurs de ruban et d'un disque tournant (5) comportant un canal (4) de guidage du ruban pour le dépôt du ruban dans le pot (10), au moins une buse (6) étant disposée en aval des cylindres (3) délivreurs de ruban, cette buse servant à séparer le ruban à l'aide d'air comprimé et étant disposée à l'orifice d'entrée du canal (4) de guidage du ruban et soufflant dans le canal (4) de guidage du ruban et dans la direction du ruban (1) de fibres, dispositif caractérisé en ce qu'il comporte un moyen pour arrêter la livraison du ruban dans le pot (10), un moyen pour déplacer en translation le pot (10) pour libérer le débouché du canal (4) de guidage du ruban dans le disque tournant (5) et plusieurs buses (6.1 à 6.13) pour séparer le ruban (1) de fibres à l'intérieur du canal (4) de guidage du ruban.
  13. Dispositif selon la revendication 12, caractérisé en ce que les buses (6.1 à 6.13) soufflent dans une direction formant un angle allant jusqu'à environ 45° par rapport au ruban (1) de fibres dans l'orifice du canal (4) de guidage du ruban.
  14. Dispositif selon l'une des revendications 12 et 13, caractérisé en ce que les buses (6.1 à 6.13) sont montées pivotantes sur un domaine angulaire de 90° dans un plan.
  15. Dispositif selon l'une des revendications 12 et 13, caractérisé en ce que les buses (6.1, 6.2, 6.3, 6.4) sont disposées l'une à côté de l'autre, de sorte qu'elles soufflent parallélement dans l'ouverture du canal (4) de guidage du ruban.
  16. Dispositif selon l'une des revendications 12 et 13, caractérisé en ce que des buses (6.5, 6.6, 6.7, 6.8, 6.9, 6.10) sont disposées en cercle en étant convergentes autour de l'orifice d'ouverture du canal (4) de guidage du ruban.
  17. Dispositif selon la revendication 16, caractérisé en ce que les buses (6.5 à 6.10) sont disposées sur une plaque (11).
  18. Dispositif selon la revendication 17, caractérisé en ce que la plaque (11) des buses est fixée sur un élément de fixation (12) qui est relié à une coulisse (13) réglable.
  19. Dispositif selon la revendication 17, caractérisé en ce que la hauteur de la plaque (11) des buses peut être modifiée par rapport au bord du canal (4) de guidage du ruban et en ce que cette plaque peut être fixée.
  20. Dispositif selon la revendication 12, caractérisé en ce qu'au milieu, entre deux buses extérieures (6.11 et 6.12) est disposée une buse (6.13) pouvant coulisser dans le sens de sa longueur vers le ruban des fibres.
  21. Dispositif selon la revendication 20, caractérisé en ce que la buse (6.13) coulissante est reliée à un corps (16) mobile, qui est monté à l'intérieur d'un organe (15) de guidage et qu'un ressort annulaire (17) maintient en position de sortie.
EP93104391A 1992-06-17 1993-03-18 Procédé et dispositif pour séparer un ruban de fibres délivré dans une boîte à un banc d'étirage Expired - Lifetime EP0574659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4219845 1992-06-17
DE4219845A DE4219845A1 (de) 1992-06-17 1992-06-17 Verfahren und Vorrichtung zur Trennung eines Faserbandes

Publications (2)

Publication Number Publication Date
EP0574659A1 EP0574659A1 (fr) 1993-12-22
EP0574659B1 true EP0574659B1 (fr) 1995-06-21

Family

ID=6461227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104391A Expired - Lifetime EP0574659B1 (fr) 1992-06-17 1993-03-18 Procédé et dispositif pour séparer un ruban de fibres délivré dans une boîte à un banc d'étirage

Country Status (5)

Country Link
EP (1) EP0574659B1 (fr)
JP (1) JPH06294026A (fr)
CZ (1) CZ105193A3 (fr)
DE (2) DE4219845A1 (fr)
ES (1) ES2075737T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581849A (en) * 1994-05-13 1996-12-10 Rieter Ingolstadt Spinnereimaschinenbau Ag Process for positioning a fiber sliver on a flat can
US5651165A (en) * 1993-07-24 1997-07-29 Rieter Ingolstadt Spinnereimaschinenbau Ag Process for the deposit of a fiber sliver end on a flat can

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19936703A1 (de) * 1999-08-04 2001-02-08 Truetzschler Gmbh & Co Kg Vorrichtung zur Ablage des Faserbandes an einer Faserbandkanne, insbesondere Kanne mit länglichem Querschnitt
CN104593913B (zh) * 2015-01-09 2017-08-25 经纬纺织机械股份有限公司 一种棉网吸嘴及其应用的精梳机
CN105297205B (zh) * 2015-11-30 2017-12-12 沈阳宏大纺织机械有限责任公司 并条机自动断条装置及使用该装置的断条方法
CN110304493A (zh) * 2019-07-03 2019-10-08 安徽宏润工业设备安装有限公司 一种纱线卷绕装置
CN111893606B (zh) * 2020-08-31 2021-07-20 安徽新虹纺织有限公司 一种纺织纱线断线监测装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL269452A (fr) * 1960-09-22
DE2947342A1 (de) * 1979-01-03 1980-07-17 Heberlein Hispano Sa Vorrichtung zum abtrennen eines faserbandes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5651165A (en) * 1993-07-24 1997-07-29 Rieter Ingolstadt Spinnereimaschinenbau Ag Process for the deposit of a fiber sliver end on a flat can
US5581849A (en) * 1994-05-13 1996-12-10 Rieter Ingolstadt Spinnereimaschinenbau Ag Process for positioning a fiber sliver on a flat can
US5647097A (en) * 1994-05-13 1997-07-15 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device to sever the fiber sliver on a textile machine delivering a fiber sliver

Also Published As

Publication number Publication date
EP0574659A1 (fr) 1993-12-22
DE59300278D1 (de) 1995-07-27
DE4219845A1 (de) 1993-12-23
CZ105193A3 (en) 1994-02-16
JPH06294026A (ja) 1994-10-21
ES2075737T3 (es) 1995-10-01

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