WO2023227280A1 - Procédé de remplissage d'un pot avec un ruban de fibres et système de préparation de filage pour la mise en œuvre du procédé - Google Patents

Procédé de remplissage d'un pot avec un ruban de fibres et système de préparation de filage pour la mise en œuvre du procédé Download PDF

Info

Publication number
WO2023227280A1
WO2023227280A1 PCT/EP2023/058950 EP2023058950W WO2023227280A1 WO 2023227280 A1 WO2023227280 A1 WO 2023227280A1 EP 2023058950 W EP2023058950 W EP 2023058950W WO 2023227280 A1 WO2023227280 A1 WO 2023227280A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
speed
sliver
turntable
cleaning window
Prior art date
Application number
PCT/EP2023/058950
Other languages
German (de)
English (en)
Inventor
Thomas Schmitz
Original Assignee
Trützschler Group SE
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 Trützschler Group SE filed Critical Trützschler Group SE
Publication of WO2023227280A1 publication Critical patent/WO2023227280A1/fr

Links

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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/76—Depositing materials in cans or receptacles
    • B65H54/80—Apparatus in which the depositing device or the receptacle is rotated
    • 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
    • B65H2701/311—Slivers

Definitions

  • the present invention relates to a method for filling a can with a sliver, which during a filling process at a delivery speed predetermined by a delivery device of a spinning preparation system passes through a storage tube of a storage plate of the spinning preparation system rotating at a delivery speed about a first axis of rotation in cycloid-shaped loops into the can turntable Can rotating at a turntable speed about a second axis of rotation is deposited, the storage tube being cleaned during the filling process in at least one cleaning window by means of the sliver running through the storage tube.
  • the present invention further relates to a spinning preparation system for carrying out the process.
  • the storage plate and the can turntable arranged underneath rotate, with the rotation speed of the can turntable always being slightly faster than the rotation speed of the storage plate in order to pull the sliver through the storage tube under constant tension.
  • the sliver is always guided past the same raw areas of the storage tube.
  • Contact with the inner wall of the pipe creates friction, which leads to the detachment of particles such as short fibers and dust from the sliver.
  • the particles can accumulate in pipe areas of the deposition pipe that are not covered by the sliver. However, the accumulations fall out of the storage tube when the can is changed and are visible as so-called “mice” on the sliver of the full can.
  • a spinning preparation system in which the storage tube is temporarily cleaned by the sliver itself during the filling process in order to pull out the accumulations distributed over the filling process into the filling can.
  • a drive system is assigned to the storage plate, which is designed to temporarily lower the storage plate speed compared to a fixed base speed during the filling process according to a predeterminable profile, so that the longitudinal tension in the sliver is reduced during the lowering. This is intended to lead to a temporary increase in the diameter of the fiber structure, thereby removing the entire inner surface of the storage tube from the running sliver should be coated.
  • the drive system of the storage plate can include a controllable clutch, a gearbox with a controllable gear ratio or an individual drive in order to be able to adjust the speed of the storage plate independently of the delivery speed of the upstream delivery device and the downstream can turntable.
  • the object of the present invention is to provide a method with which the storage tube can be freed from particle accumulations more efficiently and cost-effectively. Furthermore, it is an object of the present invention to provide a spinning preparation system equipped with such a cleaning function, which is more efficient and less complex.
  • the object is achieved by a method of the type mentioned at the outset in that a first drive is drive-connected to the storage plate and the delivery device, and that a second drive is drive-connected to the can turntable, the difference between the turntable speed and the can turntable being in the at least one cleaning window Deposition speed is changed by changing the drive speed of the second drive while the drive speed of the first drive is kept constant.
  • the advantage is that the spinning preparation system can continue to run undisturbed on the production side, as only the speed of the can turntable needs to be changed for the cleaning process.
  • the delivery device and the storage plate can continue to run at their target speeds, so that the cleaning process has no influence on the components of the spinning preparation system upstream of the can turntable, such as its drafting system, or an upstream system, such as a carding machine.
  • This is particularly advantageous with an integrated draw frame that is directly coupled to the card. In this way, continuous operation of the spinning preparation system can be guaranteed and the sliver produced during the can change can be temporarily stored in a sliver loop storage.
  • the cleaning process can be implemented particularly easily with the existing drive system of the spinning preparation system, in which the delivery device and the storage plate are driven by a common, first drive and the can turntable is driven by a mechanically independent, second drive.
  • the longitudinal tension acting on the sliver temporarily changes, as a result of which the sliver passes the inner wall areas of the storage tube that it would otherwise not touch during the filling process, and cleans out the particle accumulations that have formed there.
  • the particle accumulations enter the can along with the sliver during the filling process and do not lie as visible “mice” on top of the sliver storage at the end of the filling process.
  • the at least one cleaning window will be referred to as “the cleaning window” for short, whereby this should include exactly one or more of the cleaning windows. If the process only has a single cleaning window, this will be highlighted accordingly.
  • a “cleaning window” is a cleaning process with a limited period of time during the filling process, during which the sliver is continuously placed into the can. The size or time length of the cleaning window is preferably determined by the duration that the delivery device requires to deposit a predetermined length of sliver in the can. For example, the cleaning window can be so large that 50 meters of sliver can be deposited.
  • the filling process can take several minutes.
  • cleaning can be carried out regularly and, in particular, periodically. This prevents large amounts of dirt from accumulating in the first place.
  • the method can have exactly a single cleaning window or two or three of the cleaning windows.
  • the distance between the cleaning windows and the size of the cleaning window itself may depend on the length of sliver that the delivery device delivers during the filling process.
  • the method can, for example, provide the cleaning window after a delivered sliver length of preferably more than 300 meters and/or less than 1000 meters. Particularly good results in terms of sliver quality and cleaning effect were achieved with a distance of more than 400 meters and less than 600 meters between the cleaning windows.
  • more than 20 meters and/or less than 70 meters of sliver is delivered from the delivery device during the cleaning window. More preferably, between 30 meters and 60 meters of sliver is delivered during the cleaning window. This ensures, on the one hand, a sufficiently good cleaning effect and, on the other hand, only slightly influences the quality of the strip produced by the spinning preparation system.
  • the delivered sliver length can be measured by a meter counter of the spinning preparation system, which can be provided in particular on the delivery device.
  • the cleaning window can also start after a predetermined period of time has elapsed, for example after 60 seconds.
  • the duration of the cleaning window can be predetermined by a defined period of time and, for example, have a period of 1 to 3 seconds.
  • the difference between the turntable speed and the delivery speed is constant. Due to the can turntable running slightly faster than the storage plate, the sliver experiences tension when deposited, which can be approximately 1.05, for example. Accordingly, the can turntable speed can be 5 percent greater than the storage plate speed. In order to clean the storage tube during the filling process, this tension is changed.
  • the above information is only to be understood as exemplary values.
  • the difference between the turntable speed and the deposition speed can be reduced by lowering the drive speed of the second drive in the at least one cleaning window.
  • the tension can be reduced by 0.02, so that, to stay with the example above, the tension can be 1.03.
  • the difference between the turntable speed and the deposition speed can be increased by increasing the drive speed of the second drive in the at least one cleaning window.
  • inner wall areas of the storage tube are also coated, which are otherwise not reached by the sliver during the filling operation, so that particle accumulations can also be cleaned out during the filling process.
  • the tension can be increased by 0.02, so that, to stick with the example above, the tension can be 1.07.
  • the difference between the turntable speed and the storage speed fluctuates periodically over time in the cleaning window.
  • the fluctuation over the course of the cleaning window over time can be sinusoidal. This also allows good cleaning effects to be achieved.
  • the filling quantity can be maximized and/or the quality of the deposited sliver can be positively influenced, since the pressure on the bunghole between the sliver layers lying one on top of the other in the can can be reduced and pressure points in the middle can be prevented.
  • the cleaning window extends over more than 70 percent of the total length of the filling process.
  • the method can only have one cleaning window.
  • the filling process can extend over several phases, in particular a start-up phase, an operating phase and a holding phase.
  • the speeds of the two drives are increased and the filling process begins.
  • the drive speed of the first drive is directly proportional to the delivery and deposit speed and the drive speed of the second drive is directly proportional to the can plate speed.
  • the operating phase can begin.
  • the drive speed of the first drive is kept constant.
  • the delivery speed can be, for example, 1000 meters of sliver per minute.
  • the cans are changed during the holding phase.
  • the speeds of the two drives are reduced.
  • the delivery speed can be reduced to 0 meters per minute for can changes.
  • the spinning preparation system is an integrated line that is directly coupled to a card
  • the holding phase can also be referred to as the braking phase.
  • the sliver that has been produced in the meantime can be temporarily stored in a band loop storage in a manner known per se.
  • the cleaning window is preferably in the operating phase, although the cleaning window can in principle also extend over several of the operating phases.
  • the difference between the turntable speed and the deposition speed in the cleaning window fluctuates periodically over time, it can be advantageous if the time length of the cleaning window extends over at least 80 percent of the time length of the filling process.
  • a spinning preparation system of the type mentioned at the beginning, which has the storage plate, which can be driven to rotate about the first axis of rotation and the storage tube for depositing the sliver into the can, the delivery device for feeding the sliver to the storage plate, the first drive , which is driveably connected to the storage plate and the delivery device, the second drive, which is driveably connected to the can turntable, and a control device which is configured to control the first drive and the second drive.
  • the spinning preparation system has the same advantages as the method for filling a can with a sliver, and vice versa, so that reference is made to the above description of the method.
  • control unit is configured to control the drive speeds of the first drive and the second drive.
  • the control unit can be connected to or include a meter counter in order to use its measured values to control the length of the cleaning window or the distances between the cleaning windows, if several are provided. In this way, after reaching a predetermined sliver length, for example 500 meters, the cleaning window can be started and kept open until a further predetermined sliver length, for example 50 meters, has been reached.
  • the control unit can, in addition to or as an alternative to the meter counter, include a time counter or be coupled to one in order to start the cleaning window in an analogous manner after a predetermined period of time has elapsed and to keep it open for a defined period of time.
  • the length or time values can depend on the delivery speed and can be stored in a database of the control unit or can be entered manually by an operator via an input device connected to the spinning preparation system.
  • the second drive can be arranged in a stationary manner on the spinning preparation system.
  • the second drive can drive the can turntable of a self-propelled trans- a portcar with which the cans can be moved autonomously in the spinning mill.
  • the self-propelled transport cart can, for example, have a transmitting and/or receiving unit so that the control unit can control the drive speeds of the second drive during the filling process.
  • the first axis of rotation of the storage plate and the second axis of rotation of the can turntable are preferably aligned parallel to one another.
  • the spinning preparation system can, for example, be a regulated or unregulated frame or at least include a drafting device.
  • Figure 1 shows a schematic sectional view of a spinning preparation system according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view of a storage plate of the spinning preparation system from Figure 1;
  • Figure 3 is a cross-sectional view of a storage tube of the storage plate from Figure 2;
  • Figure 4 is a diagram of a method according to a first embodiment of the present invention, the diagram showing the rotational speed on the ordinate as a function of time on the abscissa;
  • Figure 5 shows a diagram of a method according to a second embodiment of the present invention, the diagram showing the rotational speed on the ordinate as a function of the time on the abscissa.
  • FIG. 1 shows a spinning preparation system 1, designed here as an example, which has an inlet area 2, a drafting system 3 and a sliver storage system 4 in a manner known per se.
  • a longitudinal direction Z is normally on an installation level E on which the spinning preparation system 1 is set up.
  • Terms such as “below”, “below”, “above” or “above” represent spatial information in relation to the spinning preparation system 1 that has been set up.
  • spinning cans 5 (here: round cans) filled with feed belts are arranged below a gate 6.
  • the feed belts are drawn off via feed rollers 7 and fed to the drafting system 3.
  • the feed tapes arrive as a doubled and stretched sliver 8 via a delivery device 9 into a storage plate 10 of the tape storage system 4.
  • a can turntable 11 is arranged, on which a can 12 to be filled is positioned.
  • the can turntable 11 can, as shown here, belong to the spinning preparation system 1.
  • the sliver 8 is continuously placed over the storage plate 10 in cycloid-shaped loops into the can 12.
  • the cycloid is created by superimposing two rotational movements, namely a rotational movement of the storage plate 10 about a first axis of rotation D1 and a rotational movement of the can turntable 11 about a second axis of rotation D2.
  • the delivery device 9 has two take-off rollers 13, 14, between which the sliver 8 is guided and delivered to the storage plate 10.
  • the delivery speed specified by the take-off rollers 13, 14 can be adapted to the deposit speed n10 at which the deposit plate 10 rotates about the axis of rotation D1.
  • the rotationally driven deposit plate 10 and the two take-off rollers 13, 14 are drive-connected together with a first drive 15 of the spinning preparation system 1, the drive speed of the first drive 15 being directly proportional to the deposit speed n10 of the deposit plate 10 and the delivery speed of the delivery device 9.
  • the can turntable 11 is drive-connected to a second drive 16 that is mechanically separated from the first drive 15, the drive speed of the second drive 16 being directly proportional to a turntable speed n11 at which the can turntable 11 rotates about the axis of rotation D2.
  • the two drives 15, 16 can each comprise an electric motor, which are drive-connected to the take-off rollers 13, 14 and the storage plate 10 or to the can turntable 11 by means of gears or similar transmission devices (not shown).
  • FIG. 10 A cross section of the storage plate 10 is shown in FIG.
  • the storage plate 10 has a storage tube 17 through which the sliver 8 is guided.
  • the storage tube 17 is spatially curved and has an entrance 18 on the drafting system side and an exit 19 on the can side for the sliver 8.
  • the input 18 is arranged coaxially to the first axis of rotation D1 and the output 19 at the radial distance a and the axial distance b to the input 18.
  • a tensile force acts on the sliver 8 due to the can turntable 11, which rotates faster than the storage plate 10, which is indicated by the arrow F in FIG.
  • the sliver 8 follows the bend of the storage tube 17 and covers the inner wall areas 20 of the storage tube 17 on the inside of the curve and leaves out the inner wall areas 21 of the storage tube 17 on the outside of the curve.
  • the rotational speed-time diagram shown shows the course of the storage speed n10 of the storage plate 10 and the turntable speed n11 of the turntable 11 over time t.
  • the filling process is, here, divided into three phases, namely a start-up phase 24, an operating phase 25 and a holding phase 26.
  • the can 12 to be filled is on the can turntable 11 and the drives 15, 16 are at a standstill.
  • the first drive 15 it would also be possible for the first drive 15 to drive the delivery device 9 and the storage plate 10 at a low speed in order to avoid the sluggish storage plate 10 coming to a standstill.
  • the speeds of the two drives 15, 16 are increased until the delivery speed, the delivery speed n10 and the turntable speed n11 have reached their specified final speeds nl ÜEnd, nl l End, here at time ti.
  • the start-up phase 24 usually only lasts a few seconds.
  • the operating phase 25 begins, during which the drive speed of the first drive 15 is kept constant. In normal operation, i.e. outside the cleaning windows 23, the drive speed of the second drive 16 also remains constant, so that the difference A25 between the turntable speed n11 and the storage speed n10 also remains the same.
  • the operating phase 25 here as an example, three of the cleaning windows 23 are provided, in which the difference A23 is deviated from by controlled reduction of the drive speed of the second drive 16 for a period of time At23.
  • the difference A23 is smaller than the difference A25 because the can turntable 11 rotates more slowly in the respective cleaning window 23 than in normal operation.
  • the difference A23 in the respective cleaning window 23 or in at least one of the three cleaning windows 23 could also be increased by increasing the drive speed of the second drive 16.
  • the period At23 of the respective cleaning window 23 and the time intervals At25 between the cleaning windows 23 can be dependent on the sliver length that the delivery device 9 delivers.
  • the spinning preparation system 1 can have a meter counter (not shown) which measures the length of the sliver 8 passing through.
  • the measurement signals from the meter counter can be transmitted to a control device (not shown) of the spinning preparation system 1, which controls the drive speeds of the two drives 15, 16 based on the measurement signals. For example, starting at to or at ti, after a sliver length of 500 meters has passed through, the respective cleaning window 23 can start, in which the drive speed of the second drive 16 is reduced for a sliver length of 50 meters.
  • the control device can adapt the number of cleaning windows 23 and the distances between the cleaning windows 23 depending on, for example, the size of the can 12, the delivery speed of the delivery device 9, the sliver material, etc.
  • corresponding data such as the can size, the target speeds or desired final speeds, the sliver material, etc. can be stored in one Storage unit of the control device is stored and / or entered via an input unit by an operator of the spinning preparation system 1.
  • the spinning preparation system 1 can have an operating unit 27, such as a touch display or the like, or a radio interface for coupling to a mobile device, via which this data and / or number, size and distance of the cleaning windows 23, drive speeds of the two drives 15, 16, the desired final speeds n10, n11 etc. can be entered into the control device by an operator.
  • an operating unit 27 such as a touch display or the like, or a radio interface for coupling to a mobile device, via which this data and / or number, size and distance of the cleaning windows 23, drive speeds of the two drives 15, 16, the desired final speeds n10, n11 etc. can be entered into the control device by an operator.
  • the holding phase 26 begins at time t2, in which the two drives 15, 16 reduce their drive speeds.
  • the holding phase 26 usually only lasts a few seconds.
  • the drives 15, 16 are stopped and the can change is carried out.
  • the filling process then begins again with the start-up phase 24 in order to fill the next can 12.
  • FIG. 5 shows the filling process for the can 12 according to a second embodiment, which largely corresponds to that from FIG. 4, so that reference is made to the above description with regard to the similarities. The same or modified details are given the same reference numbers. The difference lies in the design of the cleaning window 23.
  • the method only has a single cleaning window 23, which, here as an example, extends over the entire operating phase 25.
  • the drive speed of the second drive 16 and thus also the turntable speed n11 of the can turntable 11 fluctuates around the desired final speed nl l End, so that the difference A23 between the turntable speed n11 and the deposit speed n10 over the time course
  • At23 of the cleaning window 23 between a minimum value A23min and a maximum value A23max fluctuates sinusoidally.

Landscapes

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

Abstract

La présente invention concerne un procédé de remplissage d'un pot (12) avec un ruban de fibres (8) qui, pendant un processus de remplissage à une vitesse de distribution prédéterminée par un dispositif de distribution (9) d'un système de préparation de filage (1), est déposé par un tube de dépôt (17) d'une plaque de dépôt (10) du système de préparation de filage (1) tournant autour d'un premier axe de rotation (D1) à une vitesse de dépôt (n10), en boucles en forme de cycloïde dans le pot (12) qui tourne autour d'un second axe de rotation (D2) sur un plateau support de pot rotatif (11) à une vitesse de support rotatif (n11), le tube de dépôt (17) étant nettoyé pendant le processus de remplissage dans au moins une fenêtre de nettoyage (23) au moyen du ruban de fibres (8) s'étendant à travers le tube de dépôt (17). Le procédé est caractérisé en ce qu'un premier entraînement (15) est relié par entraînement à la plaque de dépôt (10) et au dispositif de distribution (9), et en ce qu'un second entraînement (16) est relié par entraînement au support de pot rotatif (11), la différence (delta 23) entre la vitesse du support rotatif (n11) et la vitesse de dépôt (n10) étant modifiée dans la ou les fenêtres de nettoyage (23) en changeant la vitesse d'entraînement du second entraînement (16) tout en maintenant constante la vitesse d'entraînement du premier entraînement (15). La présente invention concerne en outre un système de préparation de filage (1) pour la mise en œuvre du procédé.
PCT/EP2023/058950 2022-05-25 2023-04-05 Procédé de remplissage d'un pot avec un ruban de fibres et système de préparation de filage pour la mise en œuvre du procédé WO2023227280A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022113340.0 2022-05-25
DE102022113340.0A DE102022113340A1 (de) 2022-05-25 2022-05-25 Verfahren zum Befüllen einer Kanne mit einem Faserband und Spinnereivorbereitungsanlage zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
WO2023227280A1 true WO2023227280A1 (fr) 2023-11-30

Family

ID=86052008

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/058950 WO2023227280A1 (fr) 2022-05-25 2023-04-05 Procédé de remplissage d'un pot avec un ruban de fibres et système de préparation de filage pour la mise en œuvre du procédé

Country Status (2)

Country Link
DE (1) DE102022113340A1 (fr)
WO (1) WO2023227280A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004266A2 (fr) * 1990-09-07 1992-03-19 Officina Meccanica Mec Di G.Ramella & C. S.A.S. Dispositif d'empilage de rubans de fibres
DE4428476A1 (de) * 1994-08-11 1996-02-15 Truetzschler Gmbh & Co Kg Verfahren und Vorrichtung zum Ablegen eines Textilfaserbandes in einer Faserbandkanne, insbesondere an einer Strecke
EP1902990A1 (fr) * 2006-09-21 2008-03-26 Rieter Ingolstadt Spinnereimaschinenbau AG Dispositif pour une machine de prétraitement de filature

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004266A2 (fr) * 1990-09-07 1992-03-19 Officina Meccanica Mec Di G.Ramella & C. S.A.S. Dispositif d'empilage de rubans de fibres
DE4428476A1 (de) * 1994-08-11 1996-02-15 Truetzschler Gmbh & Co Kg Verfahren und Vorrichtung zum Ablegen eines Textilfaserbandes in einer Faserbandkanne, insbesondere an einer Strecke
EP1902990A1 (fr) * 2006-09-21 2008-03-26 Rieter Ingolstadt Spinnereimaschinenbau AG Dispositif pour une machine de prétraitement de filature
EP1902990B1 (fr) 2006-09-21 2010-06-23 Rieter Ingolstadt GmbH Dispositif pour une machine de prétraitement de filature

Also Published As

Publication number Publication date
DE102022113340A1 (de) 2023-11-30

Similar Documents

Publication Publication Date Title
DE19815054C1 (de) Verfahren und Spinnmaschine zum Herstellen von Coregarn
EP2695982A1 (fr) Dispositif et méthode pour égaliser ou obtenir un profil donné à un matelas de flocons de fibres
EP1902990B1 (fr) Dispositif pour une machine de prétraitement de filature
DE102007039067A1 (de) Vorrichtung an einer Kämmmaschine zur Überwachung des Kämmlingsanteils
EP2831319A1 (fr) Banc à broches présentant un dispositif de détection et d'élimination de défauts de fil
DE102005009157B4 (de) Vorrichtung an einer Spinnereivorbereitungsmaschine z.B. Karde, Krempel, Strecke o. dgl. zur Überwachung von Fasermaterial
CH694055A5 (de) Vorrichtung an einer Strecke zur Verarbeitung eines Faserverbandes aus Faserbändern.
DE4304988C1 (de) Verfahren und Vorrichtung zur Herstellung eines Vlieses mit veränderlicher Dicke
EP0289009A1 (fr) Procédé et dispositif pour la surveillance et le maintien d'une qualité de fil prédéterminée
EP3207171B1 (fr) Disposition d'aspiration pour peigneuse
WO2023227280A1 (fr) Procédé de remplissage d'un pot avec un ruban de fibres et système de préparation de filage pour la mise en œuvre du procédé
DE19835372A1 (de) Textilverarbeitende Maschine mit einer Streckwerkseinheit
EP3724383B1 (fr) Dispositif d'étirage pour un métier à filer comprenant un dispositif de compactage
EP1913186A1 (fr) Procede pour deposer un ruban de fibres, dispositif de commande et combinaison de machines textiles
EP0291710B1 (fr) Procédé et dispositif pour surveiller la partie rattachée du fil sur un métier à filer à bout libre
CH217448A (de) Verfahren und Vorrichtung zum Herstellen von Vorgarn.
DE69403167T2 (de) Walzenvorrichtung zur Regelung der Ungleichmässigkeit eines Faserbandes in einer Karde
DE2803379C2 (de) Verfahren und Vorrichtung zum Bilden einer Wattebahn von konstantem Gewicht pro Längeneinheit
EP1205588A1 (fr) Dispositif de commande pour des postes de filature d'un métier à filer
CH683347A5 (de) Steuerung bzw. Regelung einer Faserverarbeitungsanlage.
EP3484801B1 (fr) Procédé de traitement d'un assemblage de fibres en forme de toron ainsi que banc à broches
WO2019219352A1 (fr) Procédé de détermination de la garniture de tambour au niveau d'une karde et karde équipée d'une commande associée
EP1129242B1 (fr) Poste de retournement destine a des nappes
EP0754788B1 (fr) Méthode et dispositif pour éviter des fluctuations de masse d'un matériau fibreux
DE69917977T2 (de) Vorrichtung zum Verstrecken einer textilen Kardenlunte

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23717502

Country of ref document: EP

Kind code of ref document: A1