EP2175056A1 - Device and method for transferring a non-woven web - Google Patents
Device and method for transferring a non-woven web Download PDFInfo
- Publication number
- EP2175056A1 EP2175056A1 EP08165977A EP08165977A EP2175056A1 EP 2175056 A1 EP2175056 A1 EP 2175056A1 EP 08165977 A EP08165977 A EP 08165977A EP 08165977 A EP08165977 A EP 08165977A EP 2175056 A1 EP2175056 A1 EP 2175056A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- conveyor belt
- delivery conveyor
- drive means
- nonwoven
- 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
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000007596 consolidation process Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims description 17
- 230000008023 solidification Effects 0.000 claims description 17
- 239000004745 nonwoven fabric Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 abstract 2
- 239000012536 storage buffer Substances 0.000 abstract 1
- 239000004753 textile Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
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
- 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
-
- 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 an apparatus and a method for transferring a nonwoven fabric from a nonwoven layer to a solidification device.
- Nonwoven layer for laying a nonwoven fabric and subsequently bonding means for the nonwoven e.g. Needle machines for needling the fleece
- Nonwovens can be designed as a steep-arm nonwoven or as a flat fan.
- a laying carriage moves in a fixed rhythm over a delivery conveyor belt back and forth.
- At least two pile conveyor belts are used in the fleece layer for transporting a card web to the discharge gap in the laying carriage.
- the webs are stored on the delivery conveyor belt. 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.
- the nonwoven web produced by the nonwoven fabric is then compacted to a consolidation device, e.g. a hydroentangling device or a needle machine, further transported, which usually has a continuous intake.
- a consolidation device e.g. a hydroentangling device or a needle machine
- irregularities in the nonwoven to be consolidated therefore occur due to the different types of movement.
- the present invention has for its object to provide a device for transferring a nonwoven fabric from a nonwoven layer to a solidification device, the simple is constructed and can be compensated with the variable conveying speeds of the web in the nonwoven and thus the web of the solidification device can be continuously supplied to increase the uniformity of the bonded web even further, and to provide a corresponding method.
- the apparatus for transferring a nonwoven fabric from a nonwoven layer to a solidification device comprises an endlessly circulating delivery conveyor belt of the nonwoven layer for receiving the nonwoven webs, at least one first drive device being provided for driving the delivery conveyor belt at variable speed. Moreover, a second drive means arranged to drive the delivery conveyor belt at a substantially constant speed with respect to the first drive means is provided, and in a portion between the first and the second drive means, a slack storage of the delivery conveyor belt is formed.
- the delivery conveyor belt is formed as a slat strip with a plurality of transverse slats.
- a secure transport of the web is guaranteed and at the same time any slack of Abarritransportbandes is possible.
- the second drive device preferably has a toothed drive roller or a plurality of parallel drive gears.
- the first drive device preferably has a toothed drive roller or a plurality of parallel drive gears. These are usually connected directly to the delivery conveyor belt and are thus suitable for direct power transmission.
- the first drive means may comprise an endlessly circulating transport means, which has an upper run, which is positively or frictionally connected to an upper run of the Abendertransportbands. This will be the Drive the despatch conveyor belt in the area of a section of the upper run ensured. This leads to a homogenization of the drive and a particularly safe and accurate forward movement of the delivery conveyor belt in the area in front of the slack storage.
- a particularly suitable connection which ensures the drive of the delivery conveyor belt, is ensured via a positive connection.
- the delivery conveyor belt preferably has teeth which protrude inwardly, and the endlessly circulating transport means has teeth which protrude outwards and in the region of the upper run are in engagement with the teeth of the delivery conveyor belt.
- a portion of the upper run of the delivery conveyor belt may be guided in front of the slack storage on a smooth surface.
- Fig. 1 shows a schematic view of a nonwoven layer 2 in a frontally with respect to a delivery conveyor belt 4 view.
- the endlessly circulating delivery conveyor belt 4 is intended to transport a laid nonwoven (not shown) in a direction of transport perpendicular to the plane of the drawing.
- About the delivery conveyor belt 4 is a laying carriage 6 on rails or tubes 8 back and forth movable, in which between two rollers 10, 12 a Ablegespalt for the card web (not shown) is formed.
- the card web is guided in the nonwoven layer 2 by means of at least two pile conveyor belts 14, 16 to this Ablegespalt.
- the fleece layer 2 is designed as a flat saw, in which a substantially arranged at one level with the laying carriage 6 upper carriage 18 is also mounted transversely to the transport direction of the delivery conveyor belt 4 on rails or tubes 8 movable.
- the rails or tubes 8 may be the same rails or tubes on which the laying carriage 6 is movably mounted. In operation, when the laying carriage 6 performs a reciprocating movement over the delivery conveyor belt 4, the superstructure 18 executes a synchronous, albeit slower, movement.
- the movements of laying carriage 6 and upper carriage 18 are coordinated so that when feeding the card web in the batt 2 with uniform speed controlled storage of the card web can take place without stretching or buckling within the illustrated web 2 on the delivery conveyor belt 4.
- the superstructure 18 moves in each case in the same direction, on average only half as fast as the laying carriage 6. It is also taken into account that the laying carriage 6 in the region of its reversal position must be decelerated to a stop and accelerated again.
- the card web is fed at a variable speed, for example because a cyclically operating drafting arrangement (not shown) is arranged in front of the web laying machine 2, which produces an alternating thickness in the card web for the purpose of achieving a transverse profiling of the laid web, by means of independent control the movement of superstructure 18 and laying carriage 6 in known Way a Florbahnbuff ceremonies be made within the batt 2.
- a cyclically operating drafting arrangement (not shown) is arranged in front of the web laying machine 2, which produces an alternating thickness in the card web for the purpose of achieving a transverse profiling of the laid web
- a total of three belts and the delivery conveyor belt 4 are contained in the fleece layer 2.
- the invention can also be applied to all other nonwoven layers, i.a. those with two straps and one despatch conveyor.
- the invention is also applicable to opposite Leger, in which the superstructure 18 and the carriage 6 move in opposite directions, and on Steilarmvlies.
- All nonwoven layers 2 have in common that the laying carriage 6 is braked at the reversal points of its movement to a standstill and then has to be accelerated again in the opposite direction. During this deceleration and acceleration phase, the speed of the pile web deposit is correspondingly reduced in modern fleece layers 2 in order to avoid edge thickening in the laid fleece.
- the delivery conveyor 4 is adapted in a controlled manner to this cycle of movement and is thus at the times when the laying carriage 6 is braked and accelerated in the opposite direction, also correspondingly slower. This is necessary in order to ensure a precise positional closure of the card web layers also at the edges of the web. If the delivery conveyor 4 continued to run at a constant speed, this would not be possible. The speed of the delivery conveyor belt 4 can drop to zero. Overall, therefore, results for the delivery conveyor belt 4 a clocked movement with variable speed gradients.
- Fig. 2 is the fleece layer off Fig. 1 shown in a rotated by 90 ° degree side view.
- the delivery conveyor belt 4 which is once dotted in this drawing in two different possible positions and once shown by dashed lines, runs here in the region of its upper run from left to right and leads the laid web (not shown) to a downstream hardening device 20, here as a needle machine is trained.
- any other solidifying means 20 may be used, for example, a hydroentangling apparatus.
- the delivery conveyor belt 4 extends into the solidification device 20. It is likewise possible for the delivery conveyor belt 4 to transfer the nonwoven to a feed belt for the solidification device 20.
- Fig. 2 Upper carriage 18 and laying carriage 6 of the webbing 2 not shown.
- the delivery conveyor 4 is a slat with a plurality of Crossbars 22 (see Fig. 3a and 3b ) educated. This allows a considerable mobility between the individual crossbars 22 and thus an adaptation to any type of curve of the delivery conveyor belt 4, wherein at the same time the laid nonwoven fabric a compact base is supplied.
- a first drive means 24 is provided, which drives the delivery conveyor belt 4 with variable speed.
- the first drive device 24 preferably has a toothed drive roller or a plurality of parallel drive gears 26, which are preferably partially wrapped by the delivery conveyor belt 4. In any case, a secure connection between the drive roller 26 and the delivery conveyor belt 4 must exist.
- the teeth of the drive roller 26 and the individual drive gears are arranged spaced from each other.
- the control of the first drive device 24 is carried out in accordance with the above-described course of the clocked movement of the Abendertransportbands 4, which is determined by the course of movement of the laying carriage 6.
- the controller may be integrated in the control of the web layer 2.
- the first drive means 24 thus ensures the promotion of the endlessly circulating delivery conveyor belt 4 with variable speed.
- the first drive device 24 also has an endlessly circulating transport means 28, which is also suitable for accompanying at least a portion of the upper run of the delivery conveyor belt 4 in the conveying direction.
- This endlessly circulating transporting means 28 may be configured in various forms of a band, which will be described below with reference to FIG Fig. 3a and 3b will be discussed in more detail. It is important, however, that there is a frictional or positive connection between the endlessly circulating transport means 28 and the delivery conveyor belt 4.
- the endlessly circulating transport means 28 is preferably guided in a kind of rectangle around four guide rollers 30, 32, 34, 36, of which at least one must be driven.
- the drive of this at least one guide roller 30 is usually synchronized with the drive of the drive roller 26. In a simple way, this is achieved by connecting the drive roller 26 and the driven guide roller 30 by means of a circulating chain 38. All these measures serve to promote the portion of the upper run of the delivery conveyor belt 4 in a safe and guided manner with variable speed.
- a drive roller 26 and some parallel drive gears 26 are provided, which are arranged in the left outer region, ie farthest from the solidification device 20. It is also possible, the drive gears 26 in an area where in Fig. 2 the deflecting roller 34 is shown, or to provide two or more arrangements of a plurality of parallel drive gears 26, for example, at the in Fig. 2 indicated by reference numeral 26 and in an area in which in Fig. 2 the guide roller 34 is outlined.
- the endlessly circulating transport means 28 may be omitted under certain circumstances, and instead the upper strand of the delivery conveyor belt 4 may be guided, for example, on a smooth surface as possible.
- the guide rollers 30, 32, 34, 36 may be formed as arrangements of a plurality of gears.
- a second drive means 40 is provided, which is also formed in the example shown here as a toothed drive roller or as a plurality of parallel gears, which are partially wrapped by the delivery conveyor belt 4.
- the second drive means 40 is located at the point of the overall apparatus which is closest to the solidification means 20.
- the second drive device 40 is correlated with the pull-in speed of the solidification device 20 and thus shows a different speed profile than the first drive device 24.
- the second drive device 40 is driven continuously and preferably also at constant speed, since this corresponds to the current standard of supply to solidification devices 20 , But it can also be programmed with a variable speed feed.
- a slack of the delivery conveyor belt 4 is thus made possible by the overall device, which serves as storage for the different speeds of the first drive device 24 and the second drive device 40. It is important here that the drive devices 24, 40 are controlled in such a way that the speed differences cancel out on average, so that the slack is neither too great nor too small.
- the extreme case of a missing slack of the delivery conveyor belt 4 is shown with dotted lines, while with dashed lines a certain slack of the delivery conveyor belt 4 is outlined.
- the preferably freely suspended lower strand of the delivery conveyor belt 4 raises and lowers in accordance with the sag of the portion of the upper strand of the delivery conveyor belt 4.
- the delivery conveyor belt 4 is designed as a slat strip with transverse slats 22 and has inwardly projecting teeth 42.
- the teeth 42 are preferably snapped onto textile straps 44, which are preferably made of polyester fabric and are approximately 40 mm wide in one embodiment.
- the circulating transport means 28 consists in Fig. 3a at least one double toothed belt, in which the outwardly projecting teeth 46 are in engagement with the inwardly projecting teeth 42 of the delivery conveyor belt 4 and take them along.
- the connecting element between the teeth 46 is preferably a textile belt 48 which is formed as well as the textile belt 44.
- chains can be used.
- the endlessly circulating transport means 28 is designed as a simple toothed belt, in which the teeth 50 protrude exclusively inwards and there is a frictional connection between the hard back of the toothed belt and the inwardly projecting teeth 42 of the delivery conveyor belt 4.
- the toothed belt 28 is made of PVC or polyamide, while the inwardly projecting teeth 42 of the delivery conveyor belt 4 consist of polyamide.
- an apparatus and a method for transferring a nonwoven fabric from a nonwoven layerer to a solidifying device is provided, whereby the different speed profiles of the delivery conveyor belt 4 of the crosslapper 2 and the intake of the solidifying device 40 can be easily compensated.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Advancing Webs (AREA)
- Replacement Of Web Rolls (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Übergabe eines Vlieses von einem Vliesleger an eine Verfestigungseinrichtung.The invention relates to an apparatus and a method for transferring a nonwoven fabric from a nonwoven layer to a solidification device.
Vliesleger zum Legen eines Vlieses und im Anschluss daran angeordnete Verfestigungseinrichtungen für das Vlies, z.B. Nadelmaschinen zur Vernadelung des Vlieses, sind seit langem bekannt.Nonwoven layer for laying a nonwoven fabric and subsequently bonding means for the nonwoven, e.g. Needle machines for needling the fleece, have long been known.
Vliesleger können als Steilarmvliesleger oder als Flachtäfler ausgebildet sein. In jedem Fall bewegt sich ein Legewagen in einem festen Rhythmus über einem Abliefertransportband hin- und her. Mindestens zwei Flortransportbänder dienen im Vliesleger zum Transport einer Florbahn zum Ablegespalt im Legewagen. Über diesen Ablegespalt werden die Florbahnen auf dem Abliefertransportband abgelegt. Aufgrund der Hin- und Herbewegung des Legewagens und der Vorwärtsbewegung des Abliefertransportbands ergibt sich auf dem Abliefertransportband ein mehrlagiges Vlies mit schräg übereinander getäfelten Florlagen.Nonwovens can be designed as a steep-arm nonwoven or as a flat fan. In any case, a laying carriage moves in a fixed rhythm over a delivery conveyor belt back and forth. At least two pile conveyor belts are used in the fleece layer for transporting a card web to the discharge gap in the laying carriage. About this Ablegespalt the webs are stored on the delivery conveyor belt. 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.
Zur Erzeugung eines gleichmäßigen Flächenmassenprofils des gelegten Vlieses ist es üblich, die Geschwindigkeit des Abliefertransportbandes synchron mit der Geschwindigkeit des Legewagens zu verändern, damit gerade Florkanten und somit ein präziser Lagenschluss der gelegten Florbahnen gewährleistet werden. Dies bedeutet, dass sich das Abliefertransportband in Zyklen mit variabler Geschwindigkeit bewegt, wobei in der Regel auch kurze Stillstandszeiten des Abliefertransportbands an den Umkehrpunkten des Legewagens auftreten.To produce a uniform surface mass profile of the laid fleece, it is customary to change the speed of the delivery conveyor belt synchronously with the speed of the laying carriage, so that straight pile edges and thus a precise positional closure of the laid card webs are ensured. This means that the delivery conveyor belt moves in cycles with variable speed, which usually also short downtime of the delivery conveyor belt occur at the reversal points of the laying carriage.
Das vom Vliesleger erzeugte Vlies wird anschließend zur Verdichtung an eine Verfestigungseinrichtung, z.B. eine Wasserstrahlverfestigungseinrichtung oder eine Nadelmaschine, weitertransportiert, welche üblicherweise einen kontinuierlichen Einzug aufweist. An der Übergabestelle zwischen dem Abliefertransportband des Vlieslegers und der Verfestigungseinrichtung kommt es demnach aufgrund der unterschiedlichen Bewegungsarten zu Unregelmäßigkeiten im zu verfestigenden Vlies.The nonwoven web produced by the nonwoven fabric is then compacted to a consolidation device, e.g. a hydroentangling device or a needle machine, further transported, which usually has a continuous intake. At the transfer point between the delivery conveyor belt of the webbinder and the solidifying device, irregularities in the nonwoven to be consolidated therefore occur due to the different types of movement.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Übergabe eines Vlieses von einem Vliesleger an eine Verfestigungseinrichtung zu schaffen, die einfach aufgebaut ist und mit der variable Fördergeschwindigkeiten des Vlieses im Vliesleger kompensiert werden können und somit das Vlies der Verfestigungseinrichtung kontinuierlich zugeführt werden kann, um die Gleichmäßigkeit des verfestigten Vlieses noch weiter zu erhöhen, sowie ein entsprechendes Verfahren anzugeben.The present invention has for its object to provide a device for transferring a nonwoven fabric from a nonwoven layer to a solidification device, the simple is constructed and can be compensated with the variable conveying speeds of the web in the nonwoven and thus the web of the solidification device can be continuously supplied to increase the uniformity of the bonded web even further, and to provide a corresponding method.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 bzw. des Anspruch 8 gelöst.This object is solved by the features of claim 1 or claim 8.
Erfindungsgemäß weist die Vorrichtung zur Übergabe eines Vlieses von einem Vliesleger an eine Verfestigungseinrichtung ein endlos umlaufendes Abliefertransportband des Vlieslegers zur Aufnahme der zu einem Vlies gelegten Florbahnen auf, wobei mindestens eine erste Antriebseinrichtung zum Antreiben des Abliefertransportbands mit variabler Geschwindigkeit vorgesehen ist. Außerdem ist eine bezüglich der ersten Antriebseinrichtung näher an der Verfestigungseinrichtung angeordnete zweite Antriebseinrichtung zum Antreiben des Abliefertransportbands mit im wesentlichen konstanter Geschwindigkeit vorgesehen, und in einem Abschnitt zwischen der ersten und der zweiten Antriebseinrichtung ist ein Durchhangspeicher des Abliefertransportbands ausgebildet.According to the invention, the apparatus for transferring a nonwoven fabric from a nonwoven layer to a solidification device comprises an endlessly circulating delivery conveyor belt of the nonwoven layer for receiving the nonwoven webs, at least one first drive device being provided for driving the delivery conveyor belt at variable speed. Moreover, a second drive means arranged to drive the delivery conveyor belt at a substantially constant speed with respect to the first drive means is provided, and in a portion between the first and the second drive means, a slack storage of the delivery conveyor belt is formed.
Mit dieser Anordnung ist es auf einfache Weise möglich, Geschwindigkeitsdifferenzen zwischen dem Abliefertransportband des Vlieslegers und der Zuführung der Verfestigungseinrichtung auf gesteuerte Weise auszugleichen. Dies wiederum führt zu einer weiteren Vergleichmäßigung des verfestigten Vlieses.With this arrangement, it is possible in a simple manner to compensate for differences in speed between the delivery conveyor belt of the web laying machine and the supply of the solidifying device in a controlled manner. This in turn leads to a further homogenization of the consolidated web.
Vorzugsweise ist das Abliefertransportband als Lattenband mit einer Vielzahl von Querlatten ausgebildet. Dadurch ist ein sicherer Transport des Vlieses gewährleistet und gleichzeitig wird ein beliebiger Durchhang des Abliefertransportbandes ermöglicht.Preferably, the delivery conveyor belt is formed as a slat strip with a plurality of transverse slats. As a result, a secure transport of the web is guaranteed and at the same time any slack of Abliefertransportbandes is possible.
Die zweite Antriebseinrichtung weist vorzugsweise eine verzahnte Antriebswalze oder mehrere parallele Antriebszahnräder auf. Ebenso weist die erste Antriebseinrichtung vorzugsweise eine verzahnte Antriebswalze oder mehrere parallele Antriebszahnräder auf. Diese sind in der Regel direkt mit dem Abliefertransportband verbunden und sind so für eine unmittelbare Kraftübertragung geeignet.The second drive device preferably has a toothed drive roller or a plurality of parallel drive gears. Likewise, the first drive device preferably has a toothed drive roller or a plurality of parallel drive gears. These are usually connected directly to the delivery conveyor belt and are thus suitable for direct power transmission.
Alternativ hierzu oder zusätzlich kann die erste Antriebseinrichtung ein endlos umlaufendes Transportmittel aufweisen, welches ein Obertrum aufweist, das mit einem Obertrum des Abliefertransportbands formschlüssig oder reibschlüssig verbunden ist. Hierdurch wird der Antrieb des Abliefertransportbands im Bereich eines Abschnitts dessen Obertrums sichergestellt. Dies führt zu einer Vergleichmäßigung des Antriebs und einer im Bereich vor dem Durchhangspeicher besonders sicheren und exakten Vorwärtsbewegung des Abliefertransportbands.Alternatively or additionally, the first drive means may comprise an endlessly circulating transport means, which has an upper run, which is positively or frictionally connected to an upper run of the Abliefertransportbands. This will be the Drive the despatch conveyor belt in the area of a section of the upper run ensured. This leads to a homogenization of the drive and a particularly safe and accurate forward movement of the delivery conveyor belt in the area in front of the slack storage.
Eine besonders geeignete Verbindungsart, welche den Antrieb des Abliefertransportbands sicherstellt, ist über eine formschlüssige Verbindung gewährleistet. Hierzu weist das Abliefertransportband vorzugsweise Zähne auf, die nach innen vorragen, und das endlos umlaufende Transportmittel weist Zähne auf, die nach außen vorragen und im Bereich des Obertrums mit den Zähnen des Abliefertransportbands in Eingriff stehen.A particularly suitable connection, which ensures the drive of the delivery conveyor belt, is ensured via a positive connection. For this purpose, the delivery conveyor belt preferably has teeth which protrude inwardly, and the endlessly circulating transport means has teeth which protrude outwards and in the region of the upper run are in engagement with the teeth of the delivery conveyor belt.
Das erfindungsgemäße Verfahren zur Übergabe eines Vlieses von einem Vliesleger an eine Verfestigungseinrichtung weist folgende Schritte auf:
- Bereitstellen eines Vlieslegers mit einem Abliefertransportband für das gelegte Vlies und einer Verfestigungseinrichtung für das Vlies stromab des Vlieslegers;
- Antreiben des Abliefertransportbands mit variabler Geschwindigkeit mittels mindestens einer ersten Antriebseinrichtung; und
- kontinuierliches Antreiben des Abliefertransportbands mittels einer bezüglich der ersten Antriebseinrichtung näher an der Verfestigungseinrichtung angeordneten zweiten Antriebseinrichtung zum Ausbilden eines Durchhangspeichers in einem Abschnitt zwischen der ersten und der zweiten Antriebseinrichtung.
- Providing a nonwoven layer with a laid-down nonwoven transport conveyor and a web stabilizer downstream of the leveler;
- Driving the delivery conveyor with variable speed by means of at least one first drive means; and
- continuously driving the delivery conveyor belt by means of a second drive device arranged closer to the solidification device with respect to the first drive device for forming a slack storage device in a section between the first and the second drive device.
Alternativ zum bereits zuvor beschriebenen endlos umlaufenden Antriebsmittel, das mit dem Obertrum des Abliefertransportbands reibschlüssig oder formschlüssig verbunden ist, kann ein Abschnitt des Obertrums des Abliefertransportbands vor dem Durchhangspeicher auch auf einer glatten Oberfläche geführt sein. In diesem Fall kann es ausreichen, dass lediglich eine erste verzahnte Antriebswalze oder mehrere parallele erste Antriebszahnräder vorgesehen sind, welche für die Vorwärtsbewegung des Abliefertransportbands in Richtung des Durchhangspeichers sorgen.As an alternative to the already described endlessly circulating drive means, which is frictionally or positively connected to the upper run of the delivery conveyor belt, a portion of the upper run of the delivery conveyor belt may be guided in front of the slack storage on a smooth surface. In this case, it may be sufficient that only a first toothed drive roller or a plurality of parallel first drive gears are provided, which provide for the forward movement of the delivery conveyor belt in the direction of the slack storage.
Weitere Einzelheiten und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die Zeichnungen.
- Fig. 1
- ist eine schematische Ansicht eines Vlieslegers mit Abliefertransportband;
- Fig. 2
- ist eine schematische Seitenansicht einer Ausführungsform der erfindungsgemäßen Vorrichtung zur Übergabe eines Vlieses; und
- Fig. 3a-b
- sind vergrößerte schematische Seitenansichten von zwei alternativen Konstruktionen des Bereichs X aus
Fig. 2 .
- Fig. 1
- is a schematic view of a fleece layer with delivery conveyor belt;
- Fig. 2
- is a schematic side view of an embodiment of the device according to the invention for transferring a nonwoven fabric; and
- Fig. 3a-b
- are enlarged schematic side views of two alternative constructions of area X.
Fig. 2 ,
Die Bewegungen von Legewagen 6 und Oberwagen 18 sind so aufeinander abgestimmt, dass bei Zuführung der Florbahn in den Vliesleger 2 mit gleichförmiger Geschwindigkeit eine gesteuerte Ablage der Florbahn ohne Streckungen oder Stauchungen innerhalb des dargestellten Vlieslegers 2 auf dem Abliefertransportband 4 stattfinden kann. Dabei bewegt sich der Oberwagen 18 jeweils in dieselbe Richtung, im Mittel jedoch nur halb so schnell wie der Legewagen 6. Es wird auch der Tatsache Rechnung getragen, dass der Legewagen 6 im Bereich seiner Bewegungsumkehrstellung bis zum Stillstand abgebremst und wieder beschleunigt werden muss. Wird die Florbahn mit schwankender Geschwindigkeit zugeführt, etwa weil vor dem Vliesleger 2 ein zyklisch arbeitendes Streckwerk (nicht dargestellt) angeordnet ist, das eine wechselnde Dicke in der Florbahn zum Zwecke der Erzielung einer Querprofilierung des gelegten Vlieses erzeugt, kann mit Hilfe einer voneinander unabhängigen Steuerung der Bewegung von Oberwagen 18 und Legewagen 6 in bekannter Weise eine Florbahnpufferung innerhalb des Vlieslegers 2 vorgenommen werden.The movements of laying carriage 6 and
Gemäß diesem Ausführungsbeispiel sind insgesamt drei Bänder und das Abliefertransportband 4 im Vliesleger 2 enthalten. Die Erfindung lässt sich aber auch auf alle anderen Vliesleger, u.a. solche mit zwei Bändern und einem Abliefertransportband, anwenden. Die Erfindung ist ebenfalls auf gegenläufige Leger anzuwenden, bei denen sich der Oberwagen 18 und der Legewagen 6 entgegengesetzt bewegen, sowie auf Steilarmvliesleger.According to this exemplary embodiment, a total of three belts and the
Allen Vlieslegern 2 ist gemeinsam, dass der Legewagen 6 an den Umkehrpunkten seiner Bewegung zum Stillstand abgebremst wird und anschließend wieder in die entgegengesetzte Richtung beschleunigt werden muss. Während dieser Abbrems- und Beschleunigungsphase wird in modernen Vlieslegern 2 auch die Geschwindigkeit der Florbahnablage entsprechend reduziert, um Randverdickungen im gelegten Vlies zu vermeiden. Gleichzeitig wird auch das Abliefertransportband 4 auf gesteuerte Weise an diesen Bewegungszyklus angepasst und wird somit zu den Zeiten, wenn der Legewagen 6 abgebremst und in die Gegenrichtung wieder beschleunigt wird, ebenfalls entsprechend langsamer. Dies ist notwendig, um einen präzisen Lagenschluss der Florbahnlagen auch an den Rändern des Vlieses zu gewährleisten. Wenn das Abliefertransportband 4 weiterhin mit konstanter Geschwindigkeit laufen würde, wäre dies nicht möglich. Die Geschwindigkeit des Abliefertransportbands 4 kann dabei bis auf Null sinken. Insgesamt ergibt sich also für das Abliefertransportband 4 eine getaktete Bewegung mit variablen Geschwindigkeitsverläufen.All
In
Üblicherweise ist das Abliefertransportband 4 als ein Lattenband mit einer Vielzahl von Querlatten 22 (siehe
Die erste Antriebseinrichtung 24 gewährleistet somit die Förderung des endlos umlaufenden Abliefertransportbands 4 mit variabler Geschwindigkeit. Im dargestellten Beispielsfall weist die erste Antriebseinrichtung 24 außerdem ein endlos umlaufendes Transportmittel 28 auf, welches ebenfalls dazu geeignet ist, zumindest einen Abschnitt des Obertrums des Abliefertransportbands 4 in Förderrichtung mitzubewegen. Dieses endlos umlaufende Transportmittel 28 kann in verschiedenen Formen eines Bandes ausgestaltet sein, worauf unten unter Bezugnahme auf
In
Wesentlich für die Erfindung ist, dass bezüglich der ersten Antriebseinrichtung 24 näher an der Verfestigungseinrichtung 20 eine zweite Antriebseinrichtung 40 vorgesehen ist, die im hier dargestellten Beispielsfall ebenfalls als verzahnte Antriebswalze oder als mehrere parallel angeordnete Zahnräder ausgebildet ist, welche vom Abliefertransportband 4 teilumschlungen sind. Vorzugsweise befindet sich die zweite Antriebseinrichtung 40 an dem Punkt der Gesamtvorrichtung, welcher der Verfestigungseinrichtung 20 am nächsten liegt. Die zweite Antriebseinrichtung 40 ist mit der Einzugsgeschwindigkeit der Verfestigungseinrichtung 20 korreliert und zeigt somit einen anderen Geschwindigkeitsverlauf als die erste Antriebseinrichtung 24. Üblicherweise ist die zweite Antriebseinrichtung 40 kontinuierlich und vorzugsweise auch mit konstanter Geschwindigkeit angetrieben, da dies dem heutigen Standard der Zuführung zu Verfestigungseinrichtungen 20 entspricht. Es kann aber auch eine Zuführung mit variabler Geschwindigkeit programmiert sein.It is essential for the invention that with respect to the first drive means 24 closer to the
In einem Bereich des Obertrums des Abliefertransportbands 4 wird durch die Gesamtvorrichtung somit ein Durchhang des Abliefertransportbands 4 ermöglicht, der als Speicher für die unterschiedlichen Geschwindigkeiten der ersten Antriebseinrichtung 24 und der zweiten Antriebseinrichtung 40 dient. Wichtig ist hierbei, dass die Antriebseinrichtungen 24, 40 derart angesteuert sind, dass sich die Geschwindigkeitsunterschiede im Mittel aufheben, damit der Durchhang weder zu groß noch zu klein wird. Im dargestellten Beispielsfall ist mit gepunkteten Linien der Extremfall eines fehlenden Durchhangs des Abliefertransportbands 4 dargestellt, während mit gestrichelten Linien ein gewisser Durchhang des Abliefertransportbands 4 skizziert ist. Das vorzugsweise frei hängende Untertrum des Abliefertransportbands 4 hebt und senkt sich entsprechend dem Durchhang des Abschnitts des Obertrums des Abliefertransportbands 4.In a region of the upper strand of the
In
Im Beispielsfall der
Auf diese Weise ist eine Vorrichtung und ein Verfahren zum Übergeben eines Vlieses von einem Vliesleger an eine Verfestigungseinrichtung geschaffen, womit die unterschiedlichen Geschwindigkeitsverläufe des Abliefertransportbands 4 des Vlieslegers 2 und des Einzugs der Verfestigungseinrichtung 40 auf einfache Weise kompensiert werden können.In this way, an apparatus and a method for transferring a nonwoven fabric from a nonwoven layerer to a solidifying device is provided, whereby the different speed profiles of the
Claims (13)
dadurch gekennzeichnet, dass
bezüglich der ersten Antriebseinrichtung (24) näher an der Verfestigungseinrichtung (20) eine zweite Antriebseinrichtung (40) zum Antreiben des Abliefertransportbands (4) mit im wesentlichen konstanter Geschwindigkeit vorgesehen ist und in einem Abschnitt zwischen der ersten Antriebseinrichtung (24) und der zweiten Antriebseinrichtung (40) ein Durchhangspeicher des Abliefertransportbands (4) ausgebildet ist.Device for transferring a nonwoven fabric from a nonwoven applicator (2) to a consolidation device (20), comprising an endlessly circulating delivery conveyor belt (4) of the nonwoven applicator (2) for receiving the webs of fleece, at least one first drive device (24) for driving the delivery conveyor (4) is provided with variable speed,
characterized in that
a second drive means (40) for driving the delivery conveyor belt (4) at a substantially constant speed is provided relative to the first drive means (24) closer to the solidification means (20) and in a portion between the first drive means (24) and the second drive means (24). 40) is formed a slack storage of Abliefertransportbands (4).
kontinuierliches Antreiben des Abliefertransportbands (4) mittels einer bezüglich der ersten Antriebseinrichtung (24) näher an der Verfestigungseinrichtung (20) angeordneten zweiten Antriebseinrichtung (40) zum Ausbilden eines Durchhangspeichers in einem Abschnitt zwischen der ersten Antriebseinrichtung (24) und der zweiten Antriebseinrichtung (40).Method for transferring a nonwoven from a nonwoven layer (2) to a solidification device (20), comprising the following steps:
continuously driving the delivery conveyor belt (4) by means of a second drive device (40) arranged closer to the solidification device (20) with respect to the first drive device (24) for forming a slack storage in a section between the first drive device (24) and the second drive device (40) ,
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AT08165977T ATE543932T1 (en) | 2008-10-07 | 2008-10-07 | DEVICE AND METHOD FOR TRANSFERRING A FLEECE |
EP08165977A EP2175056B1 (en) | 2008-10-07 | 2008-10-07 | Device and method for transferring a non-woven web |
US12/574,514 US8365370B2 (en) | 2008-10-07 | 2009-10-06 | Device and method for transferring nonwoven material |
CN2009101729978A CN101713122B (en) | 2008-10-07 | 2009-10-09 | Device and method for transferring nonwoven material |
Applications Claiming Priority (1)
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EP08165977A EP2175056B1 (en) | 2008-10-07 | 2008-10-07 | Device and method for transferring a non-woven web |
Publications (2)
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EP2175056A1 true EP2175056A1 (en) | 2010-04-14 |
EP2175056B1 EP2175056B1 (en) | 2012-02-01 |
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EP08165977A Active EP2175056B1 (en) | 2008-10-07 | 2008-10-07 | Device and method for transferring a non-woven web |
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US (1) | US8365370B2 (en) |
EP (1) | EP2175056B1 (en) |
CN (1) | CN101713122B (en) |
AT (1) | ATE543932T1 (en) |
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EP2881509A1 (en) * | 2013-12-04 | 2015-06-10 | Trützschler GmbH & Co. KG | Crosslapper |
WO2015067627A3 (en) * | 2013-11-05 | 2015-06-25 | Autefa Solutions Germany Gmbh | Nonwoven laying apparatus, and nonwoven laying method |
CN106437156A (en) * | 2016-10-10 | 2017-02-22 | 天津盛泰佳业科技有限公司 | Non-woven fabric construction device |
EP3360990A1 (en) * | 2017-02-08 | 2018-08-15 | Trützschler GmbH & Co. KG | Buffer device for a non-woven web-laying device and method for operating a buffer device |
WO2018162624A1 (en) | 2017-03-09 | 2018-09-13 | Andritz Asselin-Thibeau | Device for transferring and/or introducing a fibre lap into a consolidation installation, in particular a needling loom |
EP3650595A1 (en) * | 2018-11-09 | 2020-05-13 | Oskar Dilo Maschinenfabrik KG | Compensation device |
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DE202012102597U1 (en) * | 2012-07-13 | 2013-10-14 | Hi Tech Textile Holding Gmbh | lapper |
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WO2014037503A1 (en) * | 2012-09-06 | 2014-03-13 | Hi Tech Textile Holding Gmbh | Compensating device for fluctuating transport speeds of a fibre nonwoven |
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EP3360990A1 (en) * | 2017-02-08 | 2018-08-15 | Trützschler GmbH & Co. KG | Buffer device for a non-woven web-laying device and method for operating a buffer device |
WO2018162624A1 (en) | 2017-03-09 | 2018-09-13 | Andritz Asselin-Thibeau | Device for transferring and/or introducing a fibre lap into a consolidation installation, in particular a needling loom |
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Also Published As
Publication number | Publication date |
---|---|
US20100084248A1 (en) | 2010-04-08 |
US8365370B2 (en) | 2013-02-05 |
ATE543932T1 (en) | 2012-02-15 |
CN101713122A (en) | 2010-05-26 |
EP2175056B1 (en) | 2012-02-01 |
CN101713122B (en) | 2011-08-17 |
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