EP2169095B1 - Installation de dépose régulière d'un voile de fibres - Google Patents

Installation de dépose régulière d'un voile de fibres Download PDF

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Publication number
EP2169095B1
EP2169095B1 EP20080017137 EP08017137A EP2169095B1 EP 2169095 B1 EP2169095 B1 EP 2169095B1 EP 20080017137 EP20080017137 EP 20080017137 EP 08017137 A EP08017137 A EP 08017137A EP 2169095 B1 EP2169095 B1 EP 2169095B1
Authority
EP
European Patent Office
Prior art keywords
card web
laying
carriage
fleece
conveyor belt
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 - Fee Related
Application number
EP20080017137
Other languages
German (de)
English (en)
Other versions
EP2169095A1 (fr
Inventor
Joachim Leger
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.)
Oskar Dilo Maschinenfabrik KG
Original Assignee
Oskar Dilo Maschinenfabrik KG
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 Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Priority to EP20080017137 priority Critical patent/EP2169095B1/fr
Publication of EP2169095A1 publication Critical patent/EP2169095A1/fr
Application granted granted Critical
Publication of EP2169095B1 publication Critical patent/EP2169095B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the invention relates to a system for the uniform laying of a fleece, with which a card web is deposited on a delivery conveyor belt to a nonwoven.
  • Such systems have long been known and have a nonwoven, in which a laying carriage on a delivery conveyor belt for the laid nonwoven back and forth. At least two pile conveyor belts are used for transporting the card web to the depositing gap in the laying carriage, wherein the card web is at least partially sandwiched between two sections of the two conveyer belts. As a result, a secure guidance of the card web is guaranteed to Ableggespalt in the laying carriage. Due to the back and forth movement of the laying carriage and the forward movement of the delivery conveyor belt results on the delivery conveyor belt a multi-layer fleece with obliquely paneled pile layers. Examples of nonwovens with a superstructure and a laying carriage are from the US 4,830,351 and the EP 0 522 893 A known. A particularly embodied embodiment of a nonwoven layer is known from EP 1 816 243 A1 known.
  • the present invention is therefore an object of the invention to provide a system for the uniform laying of a fleece, in which the layer closure of the laid card webs is guaranteed and the laid fleece thus also in the longitudinal direction has an even more uniform surface mass profile, and a corresponding method for uniform laying to specify a fleece.
  • the system for the uniform laying of a nonwoven fabric from a card web has a nonwoven layering machine with a crosswise transport conveyor belt above the same movable laying carriage and at least two pile conveyor belts for guiding the card web into a delivery gap formed on the laying carriage.
  • the system has at least one device for changing the Florbahnr basic, which is integrated in the nonwoven or upstream of the crosslapper and is suitable, the width profile of the card web based on stored in a memory laws of specific laying operation or on the basis of at least one in or to change the actual values of the width profile of the card web detected behind the nonwoven layer.
  • the sensor can be arranged in the region of a superstructure. At this point, an intermediate observation can take place in most cases, since the edges of the card web have partially widened up to this point due to the drive of the upper carriage again.
  • a sensor may be arranged in the region of the laying carriage. Since the card web is placed directly on the delivery conveyor belt from the carriage, a measurement of the width of the card web at this point corresponds almost completely the actual width of the actually laid card web on the delivery conveyor. In this respect, a measurement at this point can guarantee a particularly accurate Florbreitenregelung.
  • a particularly easily controllable and flexible change of the Florbahnr is possible in that preferably a suction device is used.
  • both edges of the card web can be adjusted independently and easily.
  • a simple and fast measurement is obtained when the sensor is a radiometric or optical sensor.
  • the uniformity of the laid nonwoven fabric can be ensured in the longitudinal direction in a particularly simple and accurate manner.
  • the two edges of the card web be sucked controlled by means of two suction nozzles in order to change the width profile of the card web.
  • the two suction nozzles are preferably transversely movable to the conveying direction of the card web in the nonwoven, whereby the accuracy of the suction is further increased.
  • Fig. 1 shows a schematic view of a first embodiment of the invention in a front view with respect to a delivery conveyor belt.
  • a nonwoven 15 with an endless circulating delivery conveyor belt 1 which is intended to a laid fleece 17 (see Fig. 2 ) in a transport direction perpendicular to the plane of transport.
  • an upper guide roller 2 is shown.
  • a laying carriage 3 on rails or tubes 3a is moved back and forth.
  • two guide rollers 4 and 5 are freely rotatably mounted.
  • the first guide roller 4 is partially wrapped by a cover strip 6, which has a lower strand, which runs at a close distance above the delivery conveyor belt 1 to a driven guide roller 7, via a further stationary guide roller 8 and to a guide roller 9, in a first tensioning carriage 10th is rotatably mounted, which is movable transversely to this on rails or tubes 10a below the delivery conveyor belt 1.
  • a cover strip 6 extends over two further stationary guide rollers 7a and 8a back to the laying carriage 3.
  • the driven guide roller 7 is is coupled to a motor (not shown) and is intended to drive the masking tape 6.
  • the other guide roller 5, which is rotatably mounted in the laying carriage 3, of a Flortransportband 11, which is called in the other second Flortransportband 11 partially entwined that via a driven guide roller 12 and a stationary guide roller 13 to one in the first clamping carriage 10th mounted second deflecting roller 14 is guided, which is partially wrapped by the pile conveyor belt 11, from where the pile conveyor belt 11 via further stationary guide rollers 12a and 13a to the laying carriage 3 runs back.
  • the second pile conveyor belt 11 has a lower run, which runs at a close distance above the delivery conveyor belt 1 and also performs the function of a cover strip for the laid nonwoven 17.
  • the driven deflection roller 12 is coupled to a motor (not shown) and is intended to drive the second pile conveyor belt 11.
  • a chain or a toothed belt is mounted, which runs for example via a drive gear connected to a motor and a deflection wheel (all elements not shown). With the aid of these drive devices, the laying carriage 3 can be moved back and forth across the delivery conveyor belt 1 transversely to its transport direction.
  • an upper carriage 18 is mounted so as to be movable transversely to the transport direction of the delivery conveyor belt 1 on rails or tubes 3a in the machine frame of the fleece layer 15.
  • the rails or tubes 3a may be the same rails or tubes on which the laying carriage 3 is mounted movable.
  • the uppercarriage 18 has an upper guide roller 19 and a lower guide roller 20, which are laterally offset from each other. About these two guide rollers 19 and 20 runs another Flortransportband 21, which is subsequently called first Flortransportband 21. In the area bounded by the two guide rollers 19 and 20 in the uppercarriage 18, the first pile conveyor belt 21 is inclined obliquely downwards.
  • the first Flortransportband 21 runs parallel to the upper strand of the second Flortransportbandes 11.
  • the first Flortransportband 21 is after the laying carriage 3 via a stationary mounted, motor-driven guide roller 25 and from there via a in a second clamping carriage 23rd mounted deflecting roller 24 out, and then several stationary in the machine frame mounted (hereinafter "stationary") Deflection rollers 22 to run before it reaches the superstructure 18 again.
  • the uppercarriage 18 and the second tensioning carriage 23 are connected to each other via a chain or a toothed belt (not shown) which runs via a drive gear (not shown) and a diverting wheel mounted in the machine frame (not shown).
  • the clamping carriage 23 is also movably mounted on rails or tubes 23a. Furthermore one recognizes in Fig. 1 an obliquely upwardly extending feed belt 29, which is to be laid a card web 16 (see Fig. 2 ) feeds the first pile conveyor belt 21.
  • the first tensioning carriage 10 performs an opposite movement, because the loop lengths of the cover strip 6 and the second pile conveyor belt 11 are constant. Furthermore, the uppercarriage 18 and its associated second tensioning carriage 23 perform a mutually opposite motion during operation, because they are positively connected with each other. The second tensioning carriage 23 is necessary to keep the loop length of the first pile conveyor belt 21 constant.
  • the movements of laying carriage 3 and upper carriage 18 are coordinated so that when feeding the card web 16 via the feed belt 29 at a uniform speed controlled storage of the card web 16 without stretching or compression within the illustrated web layer 15 can take place on the delivery conveyor belt 1.
  • the superstructure 18 moves in each case in the same direction, on average only half as fast as the laying carriage 3. It is also taken into account that the laying carriage 3 in the region of its movement reversal position must be decelerated to a stop and accelerated again.
  • a cyclically operating drafting arrangement (not shown) is arranged, which generates an alternating thickness in the card web 16 for the purpose of achieving a cross-profiling of the laid web, can by means of an independent control of the movement of superstructure 18th and laying carriage 3 in a known manner a Florbahnpuff ceremonies be made within the web layer 15.
  • the masking tape 6 and the web conveyor belt 11 form at the point where they are deflected in the laying carriage 3 of their guide rollers 4 and 5, a gap which is initially referred to as a discharge gap.
  • the second pile conveyor belt 11 is driven so that its upper run follows the movement of the lower run of the first pile conveyor belt 21 because both belts enclose the pile web 16 between the upper carriage 18 and the laying carriage 3 between them.
  • a total of three bands are included in the nonwoven 15.
  • the invention can also be applied to all other nonwoven layers, i.a. those with two bands, apply.
  • the invention is also applicable to opposite Leger, in which the upper carriage 18 and the carriage 3 move in opposite directions, or on Steilarmvliesleger.
  • a device 30 for changing the pile web edges is now arranged in the entrance area of the fleece layer 15.
  • the Fig. 2 can be seen even better, the device 30 for changing the Florbahnr selected from a suction device having two suction nozzles in the region of the two edges of the card web 16.
  • These suction nozzles 30 are movable transversely to the transport direction of the card web 16 in the crosslapper 15 in the preferred example and can adapt by targeted suction, the edges of the card web 16 and thus give their width profile a predetermined contour.
  • the control of the device 30 for changing the Florbahnr carried out in a first embodiment based on stored in a memory laws of the specific laying process.
  • parameters are, for example, the passage speed of the card web 16 through the nonwoven layer 15, the laying width of the web layer 15, the distortions of the card web 16 due to mechanical settings, to name the fiber orientation in the card web 16, the fiber denier and the basis weight distribution of the card web 16.
  • a test can be run in advance in order to be able to determine the exact course of change of the width profile of the card web 16 during the laying process.
  • the predicted widenings of the card web 16 at certain points in its passage through the nonwoven layer 15 are therefore to be compensated by a precompensation, i. a width reduction, be compensated by means of the device 30 for changing the Florbahnr selected.
  • the card web 16 receives a certain contour in its width profile.
  • the sensors 32 are arranged in the fleece layer 15, which check the edges and the width of the card web 16.
  • the sensors 32 are radiometric or optical sensors, but for example also infrared, laser, ultrasonic sensors or sensors for radioactive radiation come into question. It can also be provided only a sensor 32.
  • two sensors 32 in the region of the upper carriage 18 and two sensors 32 in the region of the laying carriage 3 are arranged in each case.
  • the two arranged in the region of the laying carriage 3 sensors 32 for the left and the right edge of the card web 16 are particularly useful because they check immediately before dropping the card web 16, the edges and the width of the card web 16 and thus accurate conclusions on the on allowed the Abelfertransportband 1 Flordahnlagen and the uniformity of the edges allowed.
  • the results of the sensor 32 and the sensors 32 are used in a control loop to control the device 30 for changing the Florbahnr selected. This results in a self-regulating system that ensures a particularly high uniformity of the laid web 17.
  • both suction nozzles 30 can be controlled separately from one another, since then the two edges of the card web 16 can be processed independently of each other and thus unbalanced pile widening in the nonwoven layer 15 can be compensated.
  • the device 30 for changing the Florbahnr is integrated in the input region of the web layer 15.
  • the sensors 32 are not limited to the positions shown.
  • the invention is not limited to the use of suction nozzles as a device 30 for changing the Florbahnr.
  • any other device suitable for controlled variation of the web width can be used.
  • a reduction in the width of the card web 16 could also be produced by longitudinal stretching of the card web 16 in a drafting system. In this case, however, the thickness change produced in the longitudinal profile of the card web 16 in the activation of the drives of the web layer 15 would have to be considered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (14)

  1. Installation destinée au dépôt régulier d'un non-tissé (17) formé à partir d'une nappe de voile (16), laquelle installation comprend un étaleur-nappeur (15) avec un chariot de dépôt (3) mobile transversalement à une bande transporteuse de sortie (1), au-dessus de cette dernière, ainsi qu'au moins deux bandes transporteuses de voile (11, 21) pour le guidage de la nappe de voile (16) dans une fente de distribution réalisée sur le chariot de dépôt (3),
    caractérisée en ce que
    l'installation présente en outre au moins un dispositif (30) pour modifier les bords de la nappe de voile, lequel dispositif est intégré dans l'étaleur-nappeur (15) ou est monté en amont de l'étaleur-nappeur (15) et est apte à modifier le profil de largeur de la nappe de voile (16) sur la base de lois, consignées dans une mémoire, de l'opération de dépôt spécifique, ou sur la base de valeurs effectives du profil de largeur de la nappe de voile (16), détectées par au moins un capteur (32) disposé dans ou derrière l'étaleur-nappeur (15).
  2. Installation selon la revendication 1, caractérisée en ce qu'au moins un capteur (32) est disposé dans la zone du chariot supérieur (18).
  3. Installation selon l'une des revendications 1 et 2, caractérisée en ce qu'au moins un capteur (32) est disposé dans la zone du chariot de dépôt (3).
  4. Installation selon l'une des revendications précédentes, caractérisée en ce que le dispositif (30) est réalisé sous forme de dispositif d'aspiration pour modifier les bords de la nappe de voile.
  5. Installation selon la revendication 4, caractérisée en ce que le dispositif (30) présente, pour la modification des bords de la nappe de voile, deux buses d'aspiration qui sont mobiles transversalement à la direction de transport de la nappe de voile (16) dans l'étaleur-nappeur (15).
  6. Installation selon la revendication 5, caractérisée en ce que l'étaleur-nappeur (15) est réalisé sous forme d'étaleur-nappeur synchrone.
  7. Installation selon l'une des revendications précédentes, caractérisée en ce que la première bande transporteuse de voile (21) forme sur le chariot supérieur (18) une entrée de bande avec une section d'entrée inclinée en oblique vers le bas et est par ailleurs ramenée en direction du chariot supérieur (18) au travers du chariot de dépôt (3), et que la seconde bande transporteuse de voile (11) est guidée au travers du chariot de dépôt (3) et d'un chariot de tension (10) mobile transversalement à la bande transporteuse de sortie (1), mais pas au travers du chariot supérieur (18).
  8. Installation selon l'une des revendications précédentes, caractérisée en ce que le capteur (32) est un capteur radiométrique ou optique.
  9. Procédé de dépôt régulier d'un non-tissé (17) formé à partir d'une nappe de voile (16), comprenant les étapes suivantes :
    - préparation d'un étaleur-nappeur (15) comprenant un chariot de dépôt (3) mobile transversalement à une bande transporteuse de sortie (1) au-dessus de cette dernière, ainsi qu'au moins deux bandes transporteuses de voile (11, 21) pour le guidage de la nappe de voile dans une fente de distribution réalisée sur le chariot de dépôt (3),
    caractérisé par
    - la modification contrôlée des bords de la nappe de voile en amont ou dans l'étaleur-nappeur (15) pour l'adaptation du profil de largeur de la nappe de voile (16) sur la base de lois de l'opération de dépôt spécifique, consignées dans une mémoire, ou sur la base de valeurs effectives du profil de largeur de la nappe de voile (16), détectées par au moins un capteur (32) disposé dans ou derrière l'étaleur-nappeur (15).
  10. Procédé selon la revendication 9, caractérisé en ce qu'un enregistrement des lois est préalablement réalisé dans un fonctionnement d'essai.
  11. Procédé selon l'une des revendications 9 et 10, caractérisé en ce que les deux bords de la nappe de voile (16) sont aspirés de façon contrôlée au moyen de deux buses d'aspiration (30), afin de modifier le profil de largeur de la nappe de voile (16).
  12. Procédé selon la revendication 11, caractérisé en ce que les deux buses d'aspiration (30) sont déplacées transversalement à la direction de transport de la nappe de voile (16) dans l'étaleur-nappeur (15).
  13. Procédé selon la revendication 12, caractérisé en ce que les deux buses d'aspiration (30) sont commandées séparément.
  14. Procédé selon l'une des revendications 9 à 13, caractérisé en ce que la mesure s'effectue par le au moins un capteur (32) dans la zone du chariot de dépôt.
EP20080017137 2008-09-29 2008-09-29 Installation de dépose régulière d'un voile de fibres Expired - Fee Related EP2169095B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20080017137 EP2169095B1 (fr) 2008-09-29 2008-09-29 Installation de dépose régulière d'un voile de fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080017137 EP2169095B1 (fr) 2008-09-29 2008-09-29 Installation de dépose régulière d'un voile de fibres

Publications (2)

Publication Number Publication Date
EP2169095A1 EP2169095A1 (fr) 2010-03-31
EP2169095B1 true EP2169095B1 (fr) 2012-06-06

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EP20080017137 Expired - Fee Related EP2169095B1 (fr) 2008-09-29 2008-09-29 Installation de dépose régulière d'un voile de fibres

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010050028A1 (de) * 2010-11-02 2012-05-03 Trützschler Nonwovens Gmbh Vliesbandleger
CN109825953A (zh) * 2019-03-14 2019-05-31 常熟市弘毅无纺机械有限公司 一种交叉铺网机
CN117512887B (zh) * 2024-01-08 2024-03-22 希纺新材料发展(南通)有限公司 一种无纺布生产用铺网机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB602657A (en) * 1945-11-08 1948-06-01 Albert Ernest Holmes An improvements in or relating to textile carding machines
NL285404A (fr) * 1961-11-13 1900-01-01
US3708831A (en) * 1970-05-04 1973-01-09 Kimberly Clark Co Method and apparatus cross-drafting fibrous nonwoven webs
US4830351A (en) 1988-01-27 1989-05-16 Morrison Berkshire, Inc. Batt stabilization in cross-lapped web manufacturing apparatus
FR2677046B1 (fr) 1991-06-03 1995-01-13 Asselin Ets Etaleur-nappeur.
DE20117627U1 (de) * 2001-10-31 2003-03-06 AUTEFA Automation GmbH, 86316 Friedberg Verzugseinrichtung
DE102005005672A1 (de) * 2005-02-08 2006-08-10 Voith Paper Patent Gmbh Saugeinrichtung für eine Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Papier- oder Kartonbahn
ATE398691T1 (de) 2006-02-01 2008-07-15 Dilo Kg Maschf Oskar Vorrichtung zum legen eines vlieses

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Publication number Publication date
EP2169095A1 (fr) 2010-03-31

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