EP2635728B1 - Cross-lapper - Google Patents

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Publication number
EP2635728B1
EP2635728B1 EP11760479.3A EP11760479A EP2635728B1 EP 2635728 B1 EP2635728 B1 EP 2635728B1 EP 11760479 A EP11760479 A EP 11760479A EP 2635728 B1 EP2635728 B1 EP 2635728B1
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EP
European Patent Office
Prior art keywords
belt
laying
counter
roller
feed
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EP11760479.3A
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German (de)
French (fr)
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EP2635728A1 (en
Inventor
Bernhard RÜBENACH
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Truetzschler Nonwovens GmbH
Original Assignee
Truetzschler Nonwovens GmbH
Erko Truetzschler GmbH
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Publication of EP2635728A1 publication Critical patent/EP2635728A1/en
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    • 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

Definitions

  • the invention relates to a stacker or a method for forming a nonwoven according to the preamble of the device claim 1 and the method claim 7.
  • a stacker of the generic type shows the EP1 870 499 B1 or the EP 0 865 521 B1 ,
  • Such a stacker consists of an endless circulating belt on which soft to be laid pile is transported in the Leger.
  • This infeed belt is additionally associated with a pile covering the pile, which runs in opposite directions and at the same rotational speed to the inlet belt.
  • the pile is kept pressed.
  • a in the transport direction of the supplied pile movably mounted and periodic movements exporting superstructure has guide rollers for the cover and the infeed belt.
  • the first held between inlet and shroud pile is now transferred to a counter-belt and kept following between counter and inlet belt.
  • the counter-belt runs at the same speed as the infeed belt and is likewise deflected by a deflection roller arranged in the superstructure.
  • the pile is conveyed to a movably mounted laying carriage, which has deflection rollers (laying rollers) for the two belts.
  • the two parallel laying rollers for the inlet and the counter belt form a delivery point (laying gap) for the pile to be laid, which is now stored on a running under the laying carriage orthogonal to the pile direction draw-off.
  • the laying carriage performs periodic movements across the width of the fleece to be laid.
  • the superstructure moves depending on the movement of the laying carriage.
  • Infeed and counter-belt are guided over further deflection rollers around the discharge belt to below the take-off belt, where correspondingly mounted guide rollers are arranged, which carry out compensating movements as a function of the movements of the upper carriage and the laying carriage.
  • Desired is a narrow material guide in the storage area, but the horizontally stretched bands also have a slack. It comes to friction, touches between tape and pile, which can possibly cause electrostatic effects. Uncontrolled shifts are the result. The high speed difference between the bands of the cross stacker and the surface of the deposited pile leads to such a qualitative deterioration of the product surface.
  • the EP 1 975 286 A1 describes a carriage-type legend in which the laying carriage has two laying rollers around which conveyor belts are guided.
  • the upper and lower run of the two conveyor belts is guided in parallel by a respective spreading device, depending on a deflection roller with a smaller diameter than the distance of the strands is in height switchable executed.
  • the laid pile is covered over the entire laying width with the deflecting roller lowered.
  • the guide roller leading during laying is raised, so that the belt runs between this guide roller and the guide roller of the spreading roller upstream of the spreading device at an acute angle upwards. Between the guide roller of the spreading device and the laying roller, the belt runs parallel to the take-off belt and possibly with contact to the laid pile.
  • the present invention is thus based on a cross-lapper for forming a nonwoven fabric from a plurality of pile layers, consisting of an endlessly circulating infeed belt, a contra-rotating counter-belt and endless belt at the same speed, wherein inlet and counter belt are guided around two adjacent laying rolls forming a laying gap, wherein these laying rollers are arranged in a laying carriage which is mounted transversely to this above a fleece to be laid receiving withdrawal tape and periodically back and forth, wherein the two bands on both sides of the laying gap parallel to the plane of the drawstring stretched to run arranged in Leger deflection rollers ,
  • the object of the present invention is to improve such a device, in particular in the direction of storage and product quality.
  • switching means are provided, through which the inlet and counter belt of the Be distracted parallel to the plane of the drawstring level out.
  • the switching means are in this case controlled in dependence of the movement of the laying carriage. This is done in such a way that the respective front in the direction of travel of the laying carriage belt is continuously raised by a support roller and thus runs at an angle from the plane originally extending parallel to the plane of the discharge belt level upwards. The rear in the direction of travel of the laying carriage belt is not raised and remains in the originally parallel plane and thus covers the newly deposited pile.
  • the infeed and counterstrip are deflected directly from the respective laying roller of the laying carriage continuously and alternately out of the plane extending parallel to the plane of the drawing-off belt.
  • the switching means by which the clocked raising and lowering of the bands takes place in dependence on the laying carriage movement, are for this purpose in signal communication with the controller of the drives controlling.
  • the switching means are each associated with a deflecting roller which is movably mounted so as to be adjustable in the positioner.
  • the guide rollers run to which inlet and counter belt, are mounted deflectable substantially in the vertical direction, each coupled to a switching means and so in the bars of Legewagenterrorism are controllable.
  • the switching means are each associated with a force acting on the inlet and the counter-belt backup roller.
  • the inlet and the counter-belt in the region between the guide roller and the laying roller of the laying carriage each associated with a support roller, which is actuated via a respective hinged switching means.
  • the respective strip runs parallel to the plane of the draw-off strip. According to the tension of the belt, this is slightly on the support roller.
  • the tape now runs from the laying roller at an angle to the support roller upwards and from this back down to the stationary arranged in Leger deflection roller.
  • the band experiences so three deflections.
  • Support and guide rollers are located outside the laying area next to the discharge belt.
  • the advantage of this additional back-up roller is that the band will receive support even when not raised.
  • the support roller may in this case be placed directly on the edge of the draw-off belt, so that the sagging distance of the belt between the laying roller and the support roller is minimized.
  • the bands causing switching means may be electromotive drives, with which the lifting and lowering movement is controlled according to a predetermined kinematics.
  • electromotive drives with which the lifting and lowering movement is controlled according to a predetermined kinematics.
  • the switching means can also be designed as actuatable with a fluid medium drives, ie hydraulically / pneumatically be, in this embodiment, the admission of the corresponding drives, cylinders with the working fluid via electrically switchable valves. Again, a proposed kinematics for the lifting and lowering movement can be realized.
  • a pile F is placed on a continuous endless inlet belt E.
  • the direction of movement of the pile F is indicated by the arrow.
  • the pile F has the speed vF, with which the infeed conveyor E revolves.
  • the infeed conveyor E is tensioned around deflecting rollers UE1-UE5, and further comprises a deflecting roller O arranged in a superstructure, not shown, which performs periodic reciprocating movements with the superstructure.
  • FIG. 1 moves the superstructure with the guide roller O in the direction of the arrow from left to right.
  • the infeed belt E further runs around two laying rollers LE, LG, which are arranged in a laying carriage LW parallel to each other.
  • the two laying rollers LE, LG form a laying gap LS.
  • a counter belt G is guided around guide rollers UG1 - UG5, also still in the carriage LW to the laying roller LG:
  • the counter belt G runs in the opposite direction to the infeed conveyor E and at the same speed as this.
  • the Flor F will be released during the Moving the upper carriage of the guide roller O passed on the counter-belt G and then held in the area between the guide roller O and roller LG between inlet and counter belt E, G.
  • the pile F leaves the laying carriage LW and is placed on the moving draw-off belt AB to the layers of the fleece V.
  • the take-off belt AB runs at right angles to the direction of movement of the laying carriage LW and the belts E, G stretched by the laying rollers LE, LG to the guide rollers UE1, UG1.
  • the laying carriage LW moves from left to right on the draw-off belt AB for the fleece to be laid V.
  • the feeding speed of Flores F is vF.
  • the superstructure with the deflection roller O moves in the illustrated laying phase with the speed 0.5 XV F also from left to right.
  • the laying carriage moves at a medium speed V F across the trigger table.
  • the support roller SG associated switching means SSG is activated, so that between the laying roller LG and guide roller UG1 curiously running counter-belt G is deflected upward and so no longer parallel to the level of the trigger table AB is running.
  • the nonwoven structure disturbing contacts of counter-belt G and web V are thus avoided.
  • the left support roller SE is in its lower position where there is no deflection of the infeed conveyor E. As already explained, the infeed conveyor is resting on the web V.
  • FIG. 2 shows the second phase of the laying process, in which the carriage L moves from right to left and places another layer accordingly.
  • the support roller SG is now lowered so that the counter-belt G is placed on the fleece without relative movement.
  • the left support roller SE is now raised by activating the switching means SSE and causes analogous to the situation of FIG. 1 lifting the infeed belt E from the fleece V.
  • the switching means SSE, SSG of the support rollers SE, SG are connected to a controller, not shown, which also carries out the control of the drives for the individual bands E, G and the laying carriage LW.
  • the activation of the switchable means SSE, SSG takes place exactly in synchronism with the movement of the laying carriage LW.
  • FIG. 3 shows an embodiment in which the guide rollers UE1, UG1 at the same time form the support rollers SE, SG, with which the infeed belt E or the counter belt G is alternately deflected out of the plane parallel to the plane of the take-off belt AB.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)

Description

Die Erfindung betrifft einen Kreuzleger bzw. ein Verfahren zum Bilden eines Vlieses gemäß dem Oberbegriff des Vorrichtungsanspruches 1 bzw. des Verfahrensanspruchs 7.The invention relates to a stacker or a method for forming a nonwoven according to the preamble of the device claim 1 and the method claim 7.

Einen Kreuzleger der gattungsgemäßen Art zeigt die EP1 870 499 B1 bzw. die EP 0 865 521 B1 . Ein derartiger Kreuzleger besteht aus einem endlos umlaufenden Einlaufband, auf weichem der zu legende Flor in den Leger transportiert wird. Diesem Einlaufband ist zusätzlich ein den Flor bedeckendes Deckband zugeordnet, welches gegenläufig und mit gleicher Umlaufgeschwindigkeit zum Einlaufband läuft. Zwischen Einlaufband und dem Deckband wird der Flor gepresst gehalten. Ein in Transportrichtung des zugeführten Flors beweglich gelagerter und periodische Bewegungen ausführenden Oberwagen weist Umlenkwalzen für das Deck- und das Einlaufband auf. Der zunächst zwischen Einlauf- und Deckband gehaltene Flor wird nun auf ein Gegenband übergeben und folgend zwischen Gegen- und Einlaufband gehalten. Das Gegenband läuft mit gleicher Geschwindigkeit wie das Einlaufband und wird ebenfalls durch eine im Oberwagen angeordnete Umlenkwalze umgelenkt.A stacker of the generic type shows the EP1 870 499 B1 or the EP 0 865 521 B1 , Such a stacker consists of an endless circulating belt on which soft to be laid pile is transported in the Leger. This infeed belt is additionally associated with a pile covering the pile, which runs in opposite directions and at the same rotational speed to the inlet belt. Between the infeed conveyor and the shroud, the pile is kept pressed. A in the transport direction of the supplied pile movably mounted and periodic movements exporting superstructure has guide rollers for the cover and the infeed belt. The first held between inlet and shroud pile is now transferred to a counter-belt and kept following between counter and inlet belt. The counter-belt runs at the same speed as the infeed belt and is likewise deflected by a deflection roller arranged in the superstructure.

Zwischen Gegen- und Einlaufband gehalten wird der Flor zu einem beweglich gelagerten Legewagen gefördert, der Umlenkwalzen (Legewalzen) für die beiden Bänder aufweist. Die beiden parallel nebeneinander liegenden Legewalzen für das Einlauf- und das Gegenband bilden eine Abgabestelle (Legespalt) für den zu legenden Flor, der nun auf einem unterhalb des Legewagens orthogonal zur Florrichtung laufenden Abzugsband abgelegt wird.Held between the counter and infeed belt, the pile is conveyed to a movably mounted laying carriage, which has deflection rollers (laying rollers) for the two belts. The two parallel laying rollers for the inlet and the counter belt form a delivery point (laying gap) for the pile to be laid, which is now stored on a running under the laying carriage orthogonal to the pile direction draw-off.

Der Legewagen führt hierzu periodische Bewegungen quer über die Breite des zu legenden Vlieses auf. Der Oberwagen bewegt sich in Abhängigkeit der Bewegung des Legewagens. Einlaufund Gegenband sind über weitere Umlenkwalzen um das Abzugsband herum bis unterhalb des Abzugsbandes geführt, dort sind entsprechend gelagerte Umlenkwalzen angeordnet, welche Ausgleichsbewegungen in Abhängigkeit der Bewegungen des Ober- und des Legewagens ausführen.For this purpose, the laying carriage performs periodic movements across the width of the fleece to be laid. The superstructure moves depending on the movement of the laying carriage. Infeed and counter-belt are guided over further deflection rollers around the discharge belt to below the take-off belt, where correspondingly mounted guide rollers are arranged, which carry out compensating movements as a function of the movements of the upper carriage and the laying carriage.

An der Unterseite des quer zum Abzugsband periodisch fahrenden Legewagens laufen Einlauf- und Gegenband horizontal gespannt zu außerhalb des Abzugsbandes liegenden Umlenkwalzen. Je nach Bewegungsrichtung des Legewagens weist das Einlauf- bzw. das Gegenband die doppelte Geschwindigkeit des Legewagens (der Legegeschwindigkeit des Flors) auf. Die hohe Relativgeschwindigkeit zwischen Band und Floroberfläche (Oberfläche des gelegten Vlies) tritt in Fahrtrichtung des Legewagens vor diesem auf, also wo kein Flor geführt wird.On the underside of the transverse to the take-off belt periodically moving carriage run infeed and counter-belt horizontally stretched to lying outside the discharge belt guide rollers. Depending on the direction of movement of the laying carriage, the inlet or the counter-belt has twice the speed of the laying carriage (the laying speed of the pile). The high relative speed between the belt and pile surface (surface of the laid fleece) occurs in the direction of travel of the laying carriage before this, so where no pile is guided.

Gewünscht ist eine enge Materialführung im Ablagebereich, allerdings weisen die horizontal gespannten Bänder auch einen Durchhang auf. Es kommt zu Reibung, Berührungen zwischen Band und Flor, welche ggf. elektrostatische Effekte verursachen können. Unkontrollierte Verschiebungen sind die Folge. Der hohe Geschwindigkeitsunterschied zwischen den Bändern des Kreuzlegers und der Oberfläche des abgelegten Flors führt zu so einer qualitativen Verschlechterung der Produktoberfläche.Desired is a narrow material guide in the storage area, but the horizontally stretched bands also have a slack. It comes to friction, touches between tape and pile, which can possibly cause electrostatic effects. Uncontrolled shifts are the result. The high speed difference between the bands of the cross stacker and the surface of the deposited pile leads to such a qualitative deterioration of the product surface.

Die EP 1 975 286 A1 beschreibt einen Leger vom Wagentyp, bei dem der Legewagen zwei Legewalzen aufweist, um welche Transportbänder geführt sind. Das obere und untere Trum der beiden Transportbänder wird durch je eine Spreizvorrichtung parallel geführt, je eine Umlenkwalze mit einem kleineren Durchmesser als der Abstand der Trums ist in der Höhe umschaltbar ausgeführt. Dadurch wird der gelegte Flor bei abgesenkter Umlenkwalze über die gesamte Legebreite bedeckt. Die beim Legen vorlaufende Umlenkwalze ist angehoben, so dass das Band zwischen dieser Umlenkwalze und der der Legewalze vorgeordneten Führungswalze der Spreizvorrichtung in einem spitzen Winkel nach oben läuft. Zwischen der Führungswalze der Spreizvorrichtung und der Legewalze läuft das Band parallel zum Abzugsband und ggf. mit Kontakt zum gelegten Flor.The EP 1 975 286 A1 describes a carriage-type legend in which the laying carriage has two laying rollers around which conveyor belts are guided. The upper and lower run of the two conveyor belts is guided in parallel by a respective spreading device, depending on a deflection roller with a smaller diameter than the distance of the strands is in height switchable executed. As a result, the laid pile is covered over the entire laying width with the deflecting roller lowered. The guide roller leading during laying is raised, so that the belt runs between this guide roller and the guide roller of the spreading roller upstream of the spreading device at an acute angle upwards. Between the guide roller of the spreading device and the laying roller, the belt runs parallel to the take-off belt and possibly with contact to the laid pile.

Die vorliegende Erfindung geht somit aus von einem Kreuzleger zur Bildung eines Vlies aus mehreren Florlagen, bestehend aus einem endlos umlaufendem Einlaufband, einem gegenläufig und mit gleicher Geschwindigkeit endlos umlaufendem Gegenband, wobei Einlauf- und Gegenband um zwei benachbarte und einen Legespalt bildende Legewalzen geführt sind, wobei diese Legewalzen in einem Legewagen angeordnet sind, der oberhalb eines das zu legende Vlies aufnehmenden Abzugsbandes quer zu diesem beweglich gelagert ist und periodisch hin- und herläuft, wobei die beiden Bänder beidseitig des Legespaltes parallel zur Ebene des Abzugsbandes gespannt zu im Leger angeordneten Umlenkwalzen laufen.The present invention is thus based on a cross-lapper for forming a nonwoven fabric from a plurality of pile layers, consisting of an endlessly circulating infeed belt, a contra-rotating counter-belt and endless belt at the same speed, wherein inlet and counter belt are guided around two adjacent laying rolls forming a laying gap, wherein these laying rollers are arranged in a laying carriage which is mounted transversely to this above a fleece to be laid receiving withdrawal tape and periodically back and forth, wherein the two bands on both sides of the laying gap parallel to the plane of the drawstring stretched to run arranged in Leger deflection rollers ,

Aufgabe der vorliegenden Erfindung ist es, eine derartige Vorrichtung insbesondere in Richtung Ablage und Produktqualität zu verbessern.The object of the present invention is to improve such a device, in particular in the direction of storage and product quality.

Gelöst wird diese Aufgabe durch die Merkmale des Vorrichtungsanspruches 1 bzw. des Verfahrensanspruchs 7. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the features of the device claim 1 and the method claim 7. Advantageous developments of the invention will become apparent from the dependent claims.

Gemäß der Erfindung ist vorgesehen, dass Schaltmittel vorgesehen sind, durch welche das Einlauf- und Gegenband aus der parallel zur Ebene des Abzugsbandes verlaufenden Ebene heraus abgelenkt werden. Die Schaltmittel werden hierbei in Abhängigkeit der Bewegung des Legewagens gesteuert. Dies erfolgt in der Weise, dass das jeweils in Fahrtrichtung des Legewagens vordere Band von einer Stützwalze laufend angehoben wird und so in einem Winkel aus der ursprünglich parallel zur Ebene des Abzugsbandes verlaufenden Ebene nach oben läuft. Das in Fahrtrichtung des Legewagens hintere Band wird dabei nicht angehoben und bleibt in der ursprünglich parallelen Ebene und bedeckt so den gerade abgelegten Flor.According to the invention, it is provided that switching means are provided, through which the inlet and counter belt of the Be distracted parallel to the plane of the drawstring level out. The switching means are in this case controlled in dependence of the movement of the laying carriage. This is done in such a way that the respective front in the direction of travel of the laying carriage belt is continuously raised by a support roller and thus runs at an angle from the plane originally extending parallel to the plane of the discharge belt level upwards. The rear in the direction of travel of the laying carriage belt is not raised and remains in the originally parallel plane and thus covers the newly deposited pile.

Durch die erfindungsgemäßen Schaltmittel werden Einlauf- und Gegenband direkt von der jeweiligen Legewalze des Legewagens laufend und abwechselnd aus der parallel zur Ebene des Abzugsbandes verlaufenden Ebene heraus abgelenkt.By means of the switching means according to the invention, the infeed and counterstrip are deflected directly from the respective laying roller of the laying carriage continuously and alternately out of the plane extending parallel to the plane of the drawing-off belt.

Durch das Anheben des in Fahrtrichtung vorderen Bandes werden Berührungen des mit der doppelten Legewagengeschwindigkeit laufenden Bandes und des in einem vorherigen Zyklus gelegten Flores vermieden. Auch negative Einflüsse, wie bspw. durch Schleppströmung, werden vermieden. Die Schaltmittel, durch welche das getaktete Anheben und wieder Absenken der Bänder in Abhängigkeit der Legewagenbewegung erfolgt, stehen hierzu in Signalverbindung mit der die Antriebe des Legers steuernden Steuerung.By lifting the front in the direction of travel band touches of the double carriage carriage running speed band and the Flores set in a previous cycle are avoided. Even negative influences, such as. By drag flow, are avoided. The switching means, by which the clocked raising and lowering of the bands takes place in dependence on the laying carriage movement, are for this purpose in signal communication with the controller of the drives controlling.

Gemäß einer Ausführungsform der Erfindung kann vorgesehen sein, dass die Schaltmittel jeweils einer im Leger beweglich verstellbar gelagerten Umlenkwalze zugeordnet sind. Bei dieser Ausführung sind die Umlenkwalzen, zu denen Einlauf- und Gegenband laufen, im Wesentlichen in vertikaler Richtung auslenkbar gelagert, mit je einem Schaltmittel gekoppelt und so im Takte der Legewagenbewegung steuerbar sind.According to one embodiment of the invention, it can be provided that the switching means are each associated with a deflecting roller which is movably mounted so as to be adjustable in the positioner. In this embodiment, the guide rollers, run to which inlet and counter belt, are mounted deflectable substantially in the vertical direction, each coupled to a switching means and so in the bars of Legewagenbewegung are controllable.

Gemäß einer weiteren Ausführungsform der Erfindung sind die Schaltmittel jeweils einer auf das Einlauf- und das Gegenband einwirkenden Stützwalze zugeordnet. Bei dieser Ausführungsform ist dem Einlauf- und dem Gegenband im Bereich zwischen der Umlenkwalze und der Legewalze des Legewagens je eine Stützwalze zugeordnet, welche über je ein angelenktes Schaltmittel betätigbar ist. Im nichtbetätigten Zustand läuft das jeweilige Band parallel zur Ebene des Abzugsbandes. Entsprechend der Spannung des Bandes liegt dieses auf der Stützwalze leicht auf.According to a further embodiment of the invention, the switching means are each associated with a force acting on the inlet and the counter-belt backup roller. In this embodiment, the inlet and the counter-belt in the region between the guide roller and the laying roller of the laying carriage each associated with a support roller, which is actuated via a respective hinged switching means. In the non-actuated state, the respective strip runs parallel to the plane of the draw-off strip. According to the tension of the belt, this is slightly on the support roller.

Wird das zugeordnete Schaltmittel betätigt, so läuft das Band nun von der Legewalze in einem Winkel zur Stützwalze aufwärts und von dieser wieder herab zur ortsfest im Leger angeordneten Umlenkwalze. Das Band erfährt so drei Umlenkungen. Stütz- und Umlenkwalze liegen außerhalb des Legebereiches neben dem Abzugsband.If the associated switching means is actuated, then the tape now runs from the laying roller at an angle to the support roller upwards and from this back down to the stationary arranged in Leger deflection roller. The band experiences so three deflections. Support and guide rollers are located outside the laying area next to the discharge belt.

Der Vorteil dieser zusätzlichen Stützwalze ist, dass das Band auch im nicht angehobenen Zustand eine Unterstützung erfährt. Die Stützwalze kann hierbei direkt am Rand des Abzugsbandes platziert sein, so dass die Durchhangstrecke des Bandes zwischen Legewalze und Stützwalze minimiert wird.The advantage of this additional back-up roller is that the band will receive support even when not raised. The support roller may in this case be placed directly on the edge of the draw-off belt, so that the sagging distance of the belt between the laying roller and the support roller is minimized.

Bei den das An- und Absenken der Bänder bewirkenden Schaltmittel kann es sich um elektromotorische Antriebe handeln, mit denen die Hebe- und Senkbewegung gemäß einer vorgegebenen Kinematik gesteuert wird. So lassen sich der Hebe- und Senkbewegungen ohne negative Krafteinwirkung auf die Bandbewegung und somit auch den Legevorgang ausführen.When switching on and lowering the bands causing switching means may be electromotive drives, with which the lifting and lowering movement is controlled according to a predetermined kinematics. Thus, the lifting and lowering movements without negative force on the belt movement and thus perform the laying process.

Die Schaltmittel können auch als mit einem fluiden Medium beaufschlagbare Antriebe, also hydraulisch/pneumatisch ausgeführt sein, wobei in dieser Ausführung die Beaufschlagung der entsprechenden Antriebe, Zylinder mit dem Arbeitsmedium über elektrisch schaltbare Ventile erfolgt. Auch hier lässt sich eine vorgesehene Kinematik für die Hebe- und die Senkbewegung realisieren.The switching means can also be designed as actuatable with a fluid medium drives, ie hydraulically / pneumatically be, in this embodiment, the admission of the corresponding drives, cylinders with the working fluid via electrically switchable valves. Again, a proposed kinematics for the lifting and lowering movement can be realized.

Des Weiteren erfolgt die Erläuterung eines Ausführungsbeispieles der Erfindung anhand der Zeichnungen.Furthermore, the explanation of an embodiment of the invention with reference to the drawings.

Es zeigen:

  • Fig. 1 und 2 einen Leger - einmal mit vor- und einmal mit zurücklaufendem Legewagen, und
  • Fig. 3 ein alternatives Ausführungsbeispiel, bei dem die Umlenkwalzen beiderseits des Abzugsbandes anhebbar sind.
Show it:
  • Fig. 1 and 2 a Leger - once with pre and once with returning carriage, and
  • Fig. 3 an alternative embodiment in which the guide rollers on both sides of the take-off belt can be raised.

Ein Flor F wird auf einem umlaufenden endlosen Einlaufband E abgelegt. Die Bewegungsrichtung des Flors F ist mit dem Pfeil gekennzeichnet. Der Flor F besitzt die Geschwindigkeit vF , mit der das Einlaufband E umläuft. Das Einlaufband E ist um Umlenkwalzen UE1 - UE5 gespannt, ferner um eine in einem nicht weiter dargestellten Oberwagen angeordnete Umlenk-walze O, welche mit dem Oberwagen periodische Hin- und Herbewegungen ausführt. In Figur 1 bewegt sich der Oberwagen mit der Umlenkwalze O in Richtung des Pfeils von links nach rechts.A pile F is placed on a continuous endless inlet belt E. The direction of movement of the pile F is indicated by the arrow. The pile F has the speed vF, with which the infeed conveyor E revolves. The infeed conveyor E is tensioned around deflecting rollers UE1-UE5, and further comprises a deflecting roller O arranged in a superstructure, not shown, which performs periodic reciprocating movements with the superstructure. In FIG. 1 moves the superstructure with the guide roller O in the direction of the arrow from left to right.

Das Einlaufband E läuft ferner um zwei Legewalzen LE, LG, welche in einem Legewagen LW parallel zueinander angeordnet sind. Die beiden Legewalzen LE, LG bilden einen Legespalt LS. Ein Gegenband G ist um Umlenkwalzen UG1 - UG5 geführt, ferner noch im Legewagen LW um die Legewalze LG: Das Gegenband G läuft im Gegensinn zum Einlaufband E und mit gleicher Geschwindigkeit wie dieses. Der Flor F wird während der Bewegungen des Oberwagens von der Umlenkwalze O auf das Gegenband G übergeben und anschließend im Bereich zwischen Umlenkwalze O und Legewalze LG zwischen Einlauf- und Gegenband E, G gehalten. Über den Legespalt LS zwischen den Legewalzen LE, LG verlässt der Flor F den Legewagen LW und wird auf das sich bewegende Abzugsband AB zu den Lagen des Vlieses V gelegt. Das Abzugsband AB läuft im rechten Winkel zu der Bewegungsrichtung des Legewagens LW sowie den von den Legewalzen LE, LG zu den Umlenkwalzen UE1, UG1 gespannten Bändern E, G.The infeed belt E further runs around two laying rollers LE, LG, which are arranged in a laying carriage LW parallel to each other. The two laying rollers LE, LG form a laying gap LS. A counter belt G is guided around guide rollers UG1 - UG5, also still in the carriage LW to the laying roller LG: The counter belt G runs in the opposite direction to the infeed conveyor E and at the same speed as this. The Flor F will be released during the Moving the upper carriage of the guide roller O passed on the counter-belt G and then held in the area between the guide roller O and roller LG between inlet and counter belt E, G. Via the laying gap LS between the laying rollers LE, LG, the pile F leaves the laying carriage LW and is placed on the moving draw-off belt AB to the layers of the fleece V. The take-off belt AB runs at right angles to the direction of movement of the laying carriage LW and the belts E, G stretched by the laying rollers LE, LG to the guide rollers UE1, UG1.

Bezogen auf die Bewegungsrichtung von Einlauf- und Gegenband E, G - gekennzeichnet durch die Pfeile - sind den Umlenkwalzen UE1, UG1 Stützwalzen SE, SG vorgeordnet, deren Höhenposition durch je ein zugeordnetes Schaltmittel SSE, SSG veränderbar ist.Based on the direction of movement of inlet and counter belt E, G - marked by the arrows - the guide rollers SEE, SG are preceded by the guide rollers UE1, UG1, whose height position is changed by an associated switching means SSE, SSG.

Bei der in Figur 1 dargestellten Situation fährt der Legewagen LW von links nach rechts über das Abzugsband AB für das zu legende Vlies V. Die Zufuhrgeschwindigkeit des Flores F beträgt vF. Der Oberwagen mit der Umlenkwalze O bewegt sich in der gezeigten Legephase mit der Geschwindigkeit 0,5 X VF ebenfalls von links nach rechts.At the in FIG. 1 illustrated situation, the laying carriage LW moves from left to right on the draw-off belt AB for the fleece to be laid V. The feeding speed of Flores F is vF. The superstructure with the deflection roller O moves in the illustrated laying phase with the speed 0.5 XV F also from left to right.

Der Legewagen bewegt sich mit einer mittleren Geschwindigkeit VF über den Abzugstisch. Gleichzeitig legt sich das Einlaufband E im Bereich zwischen der Legewalze LE und der Umlenkwalze UE1 ohne Relativgeschwindigkeit auf die Lagen des Vlieses V. Da im Bereich des gemeinsamen Verlaufes zwischen der Walze O und der Legewalze LG das Gegenband G und das Einlaufband die gleiche Geschwindigkeit annehmen, liegt auch hier keine Relativgeschwindigkeit zur Ablage vor und demzufolge muss das aus dem Legewagen LW in Richtung Umlenkwalze UG1 auslaufende Gegenband die doppelte Legewagengeschwindigkeit VG=2 × VLW annehmen, sich also mit der doppelten Legewagengeschwindigkeit über das abgelegte Vlies bewegen. Während dieser Phase des Legens, also bei der Bewegung des Legewagens LW von links nach rechts, ist das der Stützwalze SG zugeordnete Schaltmittel SSG aktiviert, so dass das zwischen Legewalze LG und Umlenkwalze UG1 gespannt laufende Gegenband G nach oben ausgelenkt wird und so nicht mehr parallel zur Ebene des Abzugstisch AB läuft. Die Vliesstruktur störende Berührungen von Gegenband G und Vlies V werden so vermieden. Die linke Stützwalze SE ist in ihrer unteren Position, wo keine Umlenkung des Einlaufbandes E vorliegt. Wie bereits erläutert, liegt das Einlaufband ruhend auf dem Vlies V.The laying carriage moves at a medium speed V F across the trigger table. At the same time, the infeed belt E lies in the area between the laying roller LE and the deflection roller UE1 without relative speed on the layers of the fleece V. Since in the common course between the roller O and the laying roller LG the counter belt G and the infeed belt assume the same speed, Here too, there is no relative speed to the tray and, consequently, the counter belt running out of the carriage LW in the direction of the guide roller UG1 must have twice the carriage carriage speed Assume V G = 2 × V LW , so move with the double carriage speed over the deposited fleece. During this phase of laying, ie during the movement of the laying carriage LW from left to right, the support roller SG associated switching means SSG is activated, so that between the laying roller LG and guide roller UG1 curiously running counter-belt G is deflected upward and so no longer parallel to the level of the trigger table AB is running. The nonwoven structure disturbing contacts of counter-belt G and web V are thus avoided. The left support roller SE is in its lower position where there is no deflection of the infeed conveyor E. As already explained, the infeed conveyor is resting on the web V.

Figur 2 zeigt die zweite Phase des Legevorganges, bei der der Legewagen L von rechts nach links fährt und entsprechend eine weitere Lage legt. Die Stützwalze SG ist nun abgesenkt, so dass das Gegenband G ohne Relativbewegung auf dem Vlies aufgelegt wird. Die linke Stützwalze SE ist nun durch aktivieren des Schaltmittels SSE angehoben und bewirkt analog zur Situation von Figur 1 ein Abheben des Einlaufbandes E vom Vlies V. Das aus dem Legewagen LW in Richtung Stütz- und Umlenkwalze SE, UE1 laufende Einlaufband E weist eine Geschwindigkeit VE = 2 x VF relativ zu dem Vlies V auf. FIG. 2 shows the second phase of the laying process, in which the carriage L moves from right to left and places another layer accordingly. The support roller SG is now lowered so that the counter-belt G is placed on the fleece without relative movement. The left support roller SE is now raised by activating the switching means SSE and causes analogous to the situation of FIG. 1 lifting the infeed belt E from the fleece V. The infeed belt E running from the laying carriage LW in the direction of the support and deflection rollers SE, UE1 has a speed VE = 2 × VF relative to the fleece V.

Die Schaltmittel SSE, SSG der Stützwalzen SE, SG sind mit einer nicht dargestellten Steuerung verbunden, welche auch die Ansteuerung der Antriebe für die einzelnen Bänder E, G sowie des Legewagens LW vornimmt. Die Aktivierung der schaltbaren Mittel SSE, SSG erfolgt so genau synchron zu der Bewegung des Legewagens LW.The switching means SSE, SSG of the support rollers SE, SG are connected to a controller, not shown, which also carries out the control of the drives for the individual bands E, G and the laying carriage LW. The activation of the switchable means SSE, SSG takes place exactly in synchronism with the movement of the laying carriage LW.

Figur 3 zeigt eine Ausführungsform, bei der die Umlenkwalzen UE1, UG1 zugleich die Stützwalzen SE, SG bilden, mit denen das Einlaufband E oder das Gegenband G abwechselnd aus der parallel zur Ebene des Abzugsbandes AB verlaufenden Ebene heraus abgelenkt wird. FIG. 3 shows an embodiment in which the guide rollers UE1, UG1 at the same time form the support rollers SE, SG, with which the infeed belt E or the counter belt G is alternately deflected out of the plane parallel to the plane of the take-off belt AB.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

FF
Florpile
Ee
Einlaufbandinfeed conveyor
GG
Gegenbandagainst band
OO
Umlenkwalze OberwagenGuide roller uppercarriage
LWLW
Legewagenlaying carriage
VV
Vliesfleece
LELE
Legewalze (Einlaufband)Laying roller (infeed conveyor)
LGLG
Legewalze (Gegenband)Laying roller (counter belt)
LSLS
Legespaltlaying gap
UE1-UE5UE1-UE5
Umlenkwalzen (Einlaufband)Guide rollers (infeed conveyor)
UG1-UG5UG 1-UG5
Umlenkwalzen (Gegenband)Deflection rollers (counter belt)
SESE
Stützwalze EinlaufbandBack-up roller infeed belt
SGSG
Stützwalze GegenbandBack-up counterband
SSESSE
Schaltmittel Stützwalze EinlaufbandSwitching means Back-up roller Infeed belt
SSGSSG
Schaltmittel Stützwalze GegenbandSwitching means Back-up counterband
VFVF
Geschwindigkeit Flor FSpeed Flor F
vEvE
Geschwindigkeit Einlaufband E (relativ zu Vlies V)Speed infeed conveyor E (relative to web V)
ABFROM
Abzugsbandoff belt

Claims (12)

  1. A cross-lapper for forming a nonwoven fabric made of a plurality of pile layers, consisting of an endless revolving feed belt (E), and a counter belt (G) endlessly revolving at the same speed and in the opposite direction, wherein the feed belt and the counter belt (E, G) are guided around two adjacent laying rollers (LE, LG) which form a laying gap (LS), wherein said laying rollers are arranged in a laying carriage (LW), which is movably mounted transversely to and above a discharge belt (AB) receiving the nonwoven fabric to be laid and moves back and forth periodically,
    the two belts (E, G) running, in a taut state, on both sides of the laying gap (LS) and parallel to the plane of the discharge belt (AB) to deflection rollers (UE1, UG1) arranged in the cross-lapper,
    characterized in that switching means (SSE, SSG) are provided, by means of which the feed belt and the counter belt (E, G) can be deflected out of the plane extending parallel to the plane of the discharge belt (AB).
  2. The cross-lapper of claim 1, characterized in that the switching means (SSE, SSG) are respectively associated to a support roller (SE, SG) acting on the feed and counter belts (E, G).
  3. The cross-lapper of claim 2, characterized in that the support roller (SE, SG) is associated to the feed and counter belts (E, G) in the region between the laying roller (LE, LG) and a stationary deflection roller (UE1, UG1).
  4. The cross-lapper of claim 1, characterized in that the switching means (SSE, SSG) are respectively associated to a deflection roller (UE1, UE2) supported in the cross-lapper so as to be movably adjustable.
  5. The cross-lapper of one of the preceding claims, characterized in that the switching means (SSE, SSG) are designed as electromotive drives.
  6. The cross-lapper of one of claims 1 - 4, characterized in that the switching means (SSE, SSG) are designed as drives actuatable by means of a fluid medium.
  7. A method for forming a nonwoven of a plurality of pile layers in a cross-lapper by
    transporting a pile (F) supplied on a feed belt (E) between an endless revolving feed belt (E) and a counter belt (G) endlessly revolving in the opposite direction and at the same speed, wherein the feed and counter belts (E, G) are guided around two adjacent laying rollers (LE, LG) of a laying carriage (LW), which form a laying gap (LS), and the laying carriage (LW) is supported for transversal movement above a discharge belt (AB) receiving the nonwoven to be laid and is moved back and forth periodically, wherein the two belts are returned on both sides and behind the laying gap (LS),
    characterized by
    lifting the feed or counter belt (E, G), which is ahead of the respective pile laid on the discharge belt (AB), out of a plane parallel to the plane of the discharge belt (AB).
  8. The method of claim 7, characterized by a continuous and alternate lifting the belt (E; G), which is respectively ahead of the laying carriage (LW) in the traveling direction thereof, from a deflection or support roller, which belt is thus deflected, from the pile (F) already laid, out of a plane initially parallel to the plane of the discharge belt (AB), wherein the belt trailing in the traveling direction of the laying carriage (LW) is maintained in the plane initially parallel to the discharge belt (AB), whereby the pile (F) just laid is covered.
  9. The method of claim 7 or 8, characterized by lifting the feed or counter belts (E,G), respectively, by means of a support roller (SE, SG) which is controllable by switching means (SSE, SSG) and is associated to the respective belt.
  10. The method of claim 9, characterized in that the support roller (SE, SG) is associated to the feed and counter belts (E, G) in the region between the laying roller (LE, LG) and a stationary deflection roller (UE1, UG1).
  11. The method of claim 7 or 8, characterized in that the alternate lifting of the feed and counter belts (E, G), respectively, is performed using a deflection roller (UE1, UG1) which is controllable by switching means (SSE, SSG) and associated to the respective belt (E; G) in the cross-lapper and supported so as to be movably adjustable.
  12. The method of claim 9 or 11, characterized in that motor-driven, preferably electromotive drives or drives actuatable by means of a fluid medium are used as the switching means (SSE, SSG), by which drives a support roller (SE, SG) or a deflection roller (UE1, UE2) is lifted.
EP11760479.3A 2010-11-02 2011-09-21 Cross-lapper Active EP2635728B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010050027A DE102010050027A1 (en) 2010-11-02 2010-11-02 stacker
PCT/EP2011/066435 WO2012059271A1 (en) 2010-11-02 2011-09-21 Cross-lapper

Publications (2)

Publication Number Publication Date
EP2635728A1 EP2635728A1 (en) 2013-09-11
EP2635728B1 true EP2635728B1 (en) 2014-09-03

Family

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Application Number Title Priority Date Filing Date
EP11760479.3A Active EP2635728B1 (en) 2010-11-02 2011-09-21 Cross-lapper

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Country Link
EP (1) EP2635728B1 (en)
CN (1) CN103189554B (en)
DE (1) DE102010050027A1 (en)
WO (1) WO2012059271A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012019363A1 (en) * 2012-10-02 2014-04-03 Trützschler GmbH & Co Kommanditgesellschaft Cross-stacker and method for operating a cross-stacker
DE202013105029U1 (en) * 2013-11-08 2015-02-10 Autefa Solutions Germany Gmbh lapper
CN105773783A (en) * 2016-02-19 2016-07-20 澳森木业赤壁有限责任公司 Fibreboard production system
CN107034588B (en) * 2017-06-08 2022-11-01 常熟市伟成非织造成套设备有限公司 Lapping trolley with cotton pressing function
CN107043967B (en) * 2017-06-08 2022-10-28 常熟市伟成非织造成套设备有限公司 Lapping machine with cotton pressing function
DE102019104851A1 (en) 2019-02-26 2020-08-27 Adler Pelzer Holding Gmbh Device for the production of needle felts
CN109825953A (en) * 2019-03-14 2019-05-31 常熟市弘毅无纺机械有限公司 A kind of cross lapping machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE322153B (en) * 1968-06-07 1970-03-23 Nordiska Maskinfilt Ab
DE1811616A1 (en) * 1968-11-29 1970-07-30 Textiltech Forsch Leasers and cross panelling devices for non woven fabrics
DE4217285C1 (en) * 1990-11-28 1994-01-27 Hollingsworth Gmbh Device for covering a laid fleece against wind influences in high-speed stackers, when using a compensation device for angular errors
DE29518587U1 (en) 1995-11-23 1997-04-10 Autefa Maschinenfabrik GmbH, 86316 Friedberg Fleece layer
FR2840326B1 (en) * 2002-05-28 2004-07-30 Asselin MOBILE TROLLEY OF SPIDER-STEAMER AND SPREADER-STEAMER EQUIPPED WITH SAID TROLLEY
CN2663472Y (en) * 2003-12-01 2004-12-15 江苏迎阳无纺机械有限公司 Mesh placing mechanism of mesh placement machine
DE102006028448A1 (en) 2006-06-21 2007-12-27 ERKO Trützschler GmbH stacker
EP1975286A1 (en) 2007-03-30 2008-10-01 Oskar Dilo Maschinenfabrik KG Web laying device

Also Published As

Publication number Publication date
DE102010050027A1 (en) 2012-05-03
CN103189554A (en) 2013-07-03
WO2012059271A1 (en) 2012-05-10
CN103189554B (en) 2015-08-19
EP2635728A1 (en) 2013-09-11

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