EP2716801B1 - Stacker and method for operating a stacker - Google Patents

Stacker and method for operating a stacker Download PDF

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Publication number
EP2716801B1
EP2716801B1 EP13003587.6A EP13003587A EP2716801B1 EP 2716801 B1 EP2716801 B1 EP 2716801B1 EP 13003587 A EP13003587 A EP 13003587A EP 2716801 B1 EP2716801 B1 EP 2716801B1
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EP
European Patent Office
Prior art keywords
belt
crosslapper
laying
batt
feed
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Not-in-force
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EP13003587.6A
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German (de)
French (fr)
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EP2716801A3 (en
EP2716801A2 (en
Inventor
Bernhard RÜBENACH
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Truetzschler GmbH and Co KG
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Truetzschler GmbH and Co KG
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Publication of EP2716801A2 publication Critical patent/EP2716801A2/en
Publication of EP2716801A3 publication Critical patent/EP2716801A3/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 cross-stacker for forming a nonwoven fabric from several layers of batt.
  • the invention relates to an associated method for operating the itlegers.
  • carding machines For the production of multi-ply nonwovens carding machines are usually used with subsequent stackers.
  • fiber flocks are fed on the inlet side, which are dissolved up to the individual fiber and output on the outlet side as an unconsolidated textile fabric, the batt.
  • Inlet belt runs the batt without covering and is exposed to the caused by the superstructure movement in addition to the rotation of the guide roller influences. Due to the changing directions of superstructure and laying carriage can occur depending on, inter alia, the laying width and the acceleration of the laying carriage on the associated guide rollers peripheral speeds up to five times the incoming pile speed. The centrifugal forces acting on the batt increase with the square of the respective peripheral speed. The open and without leadership around the outer periphery of the guide roller of the superstructure running batt is therefore exposed to highly fluctuating loads. These influence the quality of the crossed product considerably. In the areas of belt deflection, in which the batt is supported only by a roller, there is an undesirable open gusset, which limits the running speed of the cross straightener.
  • the EP 1367166 A1 describes a cross-stacker, in which the guide rollers are formed as suction rollers to hold at the vertical deflection of the batt from an upper to a lower band the batt on the guide roller. Furthermore, this document provides to support the batt in a limited area of the guide rollers with guide means in the form of bands from the outside. In the area of the guide rollers, the batt thus becomes of two belts chambered.
  • the evacuated deflection rollers increase the cost of operation and increase the investment costs due to the complex roll construction.
  • the stacker for forming a nonwoven fabric of several layers of fluff comprises at least one endless circulating infeed belt, which promotes the batt from the inlet region of the cross stacker to a laying nip of a laying carriage, further comprising an endlessly circulating cover strip, which on the batt on fixed to the infeed belt, the shroud fixing the batt on the infeed belt from the inlet area of the crossfeeder to the laying nip.
  • the shroud is a deflection roller in the inlet region of the cross-lapping, to a guide roller in the superstructure and led to a laying roller in the laying carriage.
  • the batt is transported without interruption in the leadership of the inlet area of the cross stacker on the superstructure to laying carriage to emerge there from the Legespalt.
  • a further improvement of the invention is achieved in that the shroud is arranged in the inlet region of the cross stacker at an acute angle to the inlet belt. This can be better removed in the inlet region by the transport speed of the batt into the cross stacker incoming trailing air.
  • the shroud has openings through which the air can escape.
  • the shroud is designed as a sieve belt.
  • the shroud is operated at the same speed as the infeed belt.
  • the carriage carriage speed can be increased or decreased relative to the line speed of the web.
  • the method according to the invention for operating a cross-lapper in which a batt with an infeed belt is transported from the inlet area of the crosslapper to a laying nip, is characterized in that the batt is fixed to the infeed belt by a cover belt from the inlet area of the cross-stacker to the laying nip.
  • the infeed belt and the shroud are operated at the same speed. This avoids unwanted distortions.
  • the carriage carriage speed can be increased or decreased relative to the entry speed of the batt to stretch or compress the batt.
  • FIG. 1 is exemplary and only schematically illustrates the principle of a cross-lapper according to the prior art.
  • the batt 3 is transported to an infeed conveyor 2 of a cross-stacker 1.
  • an upper carriage is arranged, in which in this illustration only one guide roller 6 can be seen.
  • the stacker 1 has a laying carriage, of which a laying roller 10 for a counter-belt 13 and a laying roller 9 for the inlet belt 2 are shown.
  • the so-called laying gap 11 is arranged, from which the batt 3 exits and is placed on a below the laying carriage arranged not shown tape.
  • Both laying rollers 9, 10 assume the direction of travel, the task, the batt 3 orthogonal to the previous direction to put on the belt arranged below the laying carriage and thereby fold.
  • the laying carriage moves continuously in the horizontal direction back and forth over a preset width.
  • the infeed belt 2 is deflected at least by a first and second deflection roller 4, 5 and around a deflection roller 6 of the superstructure.
  • a shroud 7 is arranged, which is guided in this illustration to a guide roller 8, a guide roller 6 of the upper carriage and a further guide roller 12.
  • Both bands 2, 7 are designed as endless belts which are driven on at least one further deflection roller, not shown.
  • the infeed belt 2 and the shroud 7 do not run parallel, but form an open angle to the carding machine, in which the fiber web 3 is pulled in and slightly compressed.
  • the batt 3 is guided around the deflection roller 6 of the superstructure around, wherein the shroud 7 is discharged laterally by means of the guide roller 12.
  • an infeed belt 2 is guided at least around a first and second deflection roller 4, 5, around the deflection roller 6 of the superstructure and around the laying roller 9 of the laying carriage.
  • the shroud 7 runs at least around the guide roller 8, the guide roller 6 of the superstructure and the laying roller 10 of the laying carriage.
  • Both bands 2, 7 are designed as endless belts which are driven on at least one further deflection roller, not shown.
  • the inlet region of the cross straightener is formed by the first deflection roller 4 with the inlet belt 2. Above the guide roller 4, the guide roller 8 of the shroud 7 is arranged.
  • the batt 3 is transported from the inlet area of the cross stacker 1 without tape change to the laying gap 11 of the laying carriage. This avoids all open gussets as well as unwanted floating delays.
  • the shroud 7 and the infeed belt 2 run at an acute angle or wedge-shaped toward one another, in which the fiber web 3 is drawn in and slightly compacted.
  • the shroud 2 is designed so that the entrained air can escape, for example via openings in the belt. For this purpose, in particular sieve belts are suitable. The fact that the shroud 7 is guided completely around the deflection roller 6 of the superstructure, no open gusset is formed.
  • the shroud 7 rotates around the three rollers 8, 6, 10, each with approximately 180 °, the shroud 7 undergoing three changes of direction.
  • the batt 3 is first transported by the inlet belt 2 with the shroud 7 from the inlet region of the cross stacker 1 to the superstructure, there to the guide roller. 6 of the superstructure steered around 180 ° to exit from the Leg gap 11.
  • the laying carriage speed can be increased or decreased relative to the entry speed of the batt. That is, the laying rollers 9 and 10 move faster in the horizontal reciprocating direction.

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

Description

Die Erfindung betrifft einen Kreuzleger zur Bildung eines Vlieses aus mehreren Lagen Faserflor.The invention relates to a cross-stacker for forming a nonwoven fabric from several layers of batt.

Weiterhin betrifft die Erfindung ein zugehöriges Verfahren zum Betreiben des Kreuzlegers.Furthermore, the invention relates to an associated method for operating the Kreuzlegers.

Zur Herstellung von mehrlagigen Vliesen werden üblicherweise Krempelanlagen mit nachfolgenden Kreuzlegern verwendet. Bei den Krempelanlagen werden auf der Einlaufseite Faserflocken zugeführt, die bis zur einzelnen Faser aufgelöst und an der Auslaufseite als ein unverfestigtes textiles Flächengebilde, dem Faserflor, ausgegeben werden.For the production of multi-ply nonwovens carding machines are usually used with subsequent stackers. In the carding machines fiber flocks are fed on the inlet side, which are dissolved up to the individual fiber and output on the outlet side as an unconsolidated textile fabric, the batt.

Zur Ausnutzung der zur Verfügung stehenden Krempelleistung ist es erforderlich, die Florgeschwindigkeit im nachfolgend angeordneten Kreuzleger zu erhöhen. Hier treten jedoch an den Umlenkwalzen der Legebänder große Fliehkräfte auf, die in Abhängigkeit von der Laufrichtung und der Bandgeschwindigkeit die qualitativen Eigenschaften des Faserflors erheblich reduzieren.In order to utilize the available card clothing, it is necessary to increase the pile speed in the subsequently arranged stacker. However, large centrifugal forces occur here on the deflection rollers of the laying belts, which considerably reduce the qualitative properties of the fiber pile as a function of the running direction and the belt speed.

Bei dem Leger nach der EP 1870499 B1 und der WO 97/19209 A1 laufen Einlauf- und Deckband zunächst parallel, den Faserflor zwischen sich haltend. Im Oberwagen wird das Einlaufband um eine Umlenkwalze geführt, das Deckband gibt den auf dem Einlaufband befindlichen Faserflor frei und läuft über Umlenkwalzen aus dem Oberwagen. Im Bereich der Umlenkwalze desIn the Leger after the EP 1870499 B1 and the WO 97/19209 A1 Run the inlet and shroud parallel first, holding the fibrous web between them. In the superstructure, the infeed belt is guided around a deflection roller, the shroud releases the fiber web located on the infeed belt and passes over deflection rollers from the superstructure. In the area of the guide roller of the

Einlaufbandes läuft der Faserflor ohne Bedeckung und ist den durch die Oberwagenbewegung nebst der Rotation der Umlenkwalze hervorgerufenen Einflüssen ausgesetzt. Aufgrund der wechselnden Laufrichtungen von Oberwagen und Legewagen können in Abhängigkeit von unter anderem der Legebreite und der Beschleunigung des Legewagens an den dazugehörigen Umlenkwalzen Umfangsgeschwindigkeiten bis zum fünffachen der einlaufenden Florgeschwindigkeit auftreten. Die auf den Faserflor wirkenden Fliehkräfte steigen dabei mit dem Quadrat der jeweiligen Umfangsgeschwindigkeit. Der offene und ohne Führung um den Außenumfang der Umlenkwalze des Oberwagens laufende Faserflor ist daher stark schwankenden Belastungen ausgesetzt. Diese beeinflussen die Qualität des kreuzgelegten Produktes im erheblichen Umfang. In den Bereichen der Bandumlenkung, in denen der Faserflor nur durch eine Walze gestützt wird, ergibt sich ein unerwünschter offener Zwickel, der die Laufgeschwindigkeit des Kreuzlegers begrenzt.Inlet belt runs the batt without covering and is exposed to the caused by the superstructure movement in addition to the rotation of the guide roller influences. Due to the changing directions of superstructure and laying carriage can occur depending on, inter alia, the laying width and the acceleration of the laying carriage on the associated guide rollers peripheral speeds up to five times the incoming pile speed. The centrifugal forces acting on the batt increase with the square of the respective peripheral speed. The open and without leadership around the outer periphery of the guide roller of the superstructure running batt is therefore exposed to highly fluctuating loads. These influence the quality of the crossed product considerably. In the areas of belt deflection, in which the batt is supported only by a roller, there is an undesirable open gusset, which limits the running speed of the cross straightener.

Da über die Legewagen im Zusammenwirken mit den Bändern auch ein einstellbarer und regelbarer Verzug innerhalb des Kreuzlegers erwünscht ist, ergibt sich hier der weitere Nachteil, dass im Bereich zwischen der Legewalze des Einlaufbandes und der Legewalze des Gegenbandes ein sogenannter schwimmender Verzug auftritt, da der Faserflor in einem Teil der Umlenkung nicht vollständig geführt ist, und damit Qualitätsmängel entstehen.Since on the laying carriage in cooperation with the tapes also an adjustable and controllable delay within the Kreuzlegers is desired, there is the further disadvantage that in the area between the laying roller of the infeed belt and the laying roller of the counter-belt a so-called floating delay occurs because of the batt in part of the diversion is not completely managed, and thus quality defects arise.

Die EP 1367166 A1 beschreibt einen Kreuzleger, bei dem die Umlenkwalzen als Saugwalzen ausgebildet sind, um bei der vertikalen Umlenkung des Faserflors von einem oberen auf ein unteres Band den Faserflor an der Umlenkwalze zu halten. Desweiteren sieht diese Schrift vor, in einem begrenzten Bereich der Umlenkwalzen den Faserflor mit Führungsmitteln in Form von Bändern von außen zu stützen. Im Bereich der Umlenkwalzen wird der Faserflor also dabei von zwei Bändern gekammert. Die besaugten Umlenkwalzen verteuern die Betriebskosten und erhöhen aufgrund des aufwendigen Walzenaufbaus die Investitionskosten.The EP 1367166 A1 describes a cross-stacker, in which the guide rollers are formed as suction rollers to hold at the vertical deflection of the batt from an upper to a lower band the batt on the guide roller. Furthermore, this document provides to support the batt in a limited area of the guide rollers with guide means in the form of bands from the outside. In the area of the guide rollers, the batt thus becomes of two belts chambered. The evacuated deflection rollers increase the cost of operation and increase the investment costs due to the complex roll construction.

Ausgehen von diesem Stand der Technik ist es Aufgabe der Erfindung, einen Kreuzleger und ein Verfahren zum Betreiben des Kreuzlegers zu schaffen, mit dem bei hohen Geschwindigkeiten ein ein- oder mehrlagiger Faserflor schnell und sicher transportiert werden kann.Starting from this prior art, it is an object of the invention to provide a cross-stacker and a method for operating the Kreuzlegers, with which at high speeds a single or multi-layer batt can be transported quickly and safely.

Die Erfindung löst die gestellte Aufgabe durch die Lehren nach Anspruch 1 und 8; weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung sind durch die Unteransprüche gekennzeichnet.The invention solves the problem by the teachings of claim 1 and 8; Further advantageous features of the invention are characterized by the subclaims.

Gemäß der technischen Lehre nach Anspruch 1 umfasst der Kreuzleger zur Bildung eines Vlieses aus mehreren Lagen Faserflor mindestens ein endlos umlaufendes Einlaufband, das den Faserflor vom Einlaufbereich des Kreuzlegers bis zu einem Legespalt eines Legewagens fördert, weiterhin umfassend ein endlos umlaufendes Deckband, das den Faserflor auf dem Einlaufband fixiert, wobei das Deckband den Faserflor vom Einlaufbereich des Kreuzlegers bis zum Legespalt auf dem Einlaufband fixiert.According to the technical teaching according to claim 1, the stacker for forming a nonwoven fabric of several layers of fluff comprises at least one endless circulating infeed belt, which promotes the batt from the inlet region of the cross stacker to a laying nip of a laying carriage, further comprising an endlessly circulating cover strip, which on the batt on fixed to the infeed belt, the shroud fixing the batt on the infeed belt from the inlet area of the crossfeeder to the laying nip.

Dadurch, dass das Deckband den Faserflor vom Einlaufbereich bis zum Legespalt auf dem Einlaufband ohne Unterbrechung fixiert, entsteht kein offener Zwickel. Gleichzeitig entsteht kein schwimmender Verzug, da der Faserflor zwischen Oberwagen und Legewagen gleichbleibend zwischen zwei Bändern geklemmt bzw. fixiert wird. Das bisher verwendete Gegenband entfällt, dessen Geschwindigkeit nach dem Stand der Technik ebenfalls mit der Geschwindigkeit des Einlaufbandes synchronisiert werden muss.The fact that the shroud fixed the batt from the inlet area to the laying gap on the infeed belt without interruption, resulting in no open gusset. At the same time there is no floating distortion, since the batt between the superstructure and laying carriage is consistently clamped or fixed between two belts. The counterband used previously omitted, the speed of the prior art must also be synchronized with the speed of the intake belt.

In bevorzugter Ausführungsform wird das Deckband um eine Umlenkwalze im Einlaufbereich des Kreuzlegers, um eine Umlenkwalze im Oberwagen und um eine Legewalze im Legewagen geführt. Damit wird auch der Faserflor ohne Unterbrechung in der Führung vom Einlaufbereich des Kreuzlegers über den Oberwagen bis zum Legewagen transportiert, um dort aus dem Legespalt auszutreten.In a preferred embodiment, the shroud is a deflection roller in the inlet region of the cross-lapping, to a guide roller in the superstructure and led to a laying roller in the laying carriage. Thus, the batt is transported without interruption in the leadership of the inlet area of the cross stacker on the superstructure to laying carriage to emerge there from the Legespalt.

Eine weitere Verbesserung der Erfindung wird dadurch erreicht, dass das Deckband im Einlaufbereich des Kreuzlegers in einem spitzen Winkel zum Einlaufband angeordnet ist. Damit kann im Einlaufbereich die durch die Transportgeschwindigkeit des Faserflors in den Kreuzleger einlaufende Schleppluft besser entfernt werden.A further improvement of the invention is achieved in that the shroud is arranged in the inlet region of the cross stacker at an acute angle to the inlet belt. This can be better removed in the inlet region by the transport speed of the batt into the cross stacker incoming trailing air.

Eine weitere Verringerung von mitgeführter Luft wird dadurch erreicht, dass das Deckband Öffnungen aufweist, durch die die Luft entweichen kann. In bevorzugter Ausführungsform wird das Deckband als Siebband ausgeführt.A further reduction of entrained air is achieved in that the shroud has openings through which the air can escape. In a preferred embodiment, the shroud is designed as a sieve belt.

Soll das erzeugte Vlies keine Profilierung aufweisen, wird das Deckband mit der gleichen Geschwindigkeit betrieben, wie das Einlaufband.If the fleece produced have no profiling, the shroud is operated at the same speed as the infeed belt.

Wird ein Verzug oder ein Stauchen gewünscht, um beispielsweise ein bestimmtes Profil für den Vlies zu erzeugen, kann die Legewagengeschwindigkeit relativ zur Einlaufgeschwindigkeit des Faserflors erhöht oder erniedrigt werden.If warping or upsetting is desired to produce, for example, a particular profile for the web, the carriage carriage speed can be increased or decreased relative to the line speed of the web.

Das erfindungsgemäße Verfahren zum Betreiben eines Kreuzlegers, bei dem ein Faserflor mit einem Einlaufband vom Einlaufbereich des Kreuzlegers bis zu einem Legespalt transportiert wird, ist dadurch gekennzeichnet, dass der Faserflor vom Einlaufbereich des Kreuzlegers bis zum Legespalt durch ein Deckband auf dem Einlaufband fixiert wird. Durch die kontinuierliche Fixierung des Faserflors zwischen dem Einlaufband und dem Deckband vom Einlaufbereich des Kreuzlegers bis zum Legespalt werden offene Zwickel und unerwünschte Verzüge vermieden. Die Qualität des Faserflors wird dabei nicht beeinträchtigt.The method according to the invention for operating a cross-lapper, in which a batt with an infeed belt is transported from the inlet area of the crosslapper to a laying nip, is characterized in that the batt is fixed to the infeed belt by a cover belt from the inlet area of the cross-stacker to the laying nip. By the continuous fixation of the batt between the infeed belt and the shroud from the inlet area of the cross stacker to the nip open gussets and unwanted distortions are avoided. The quality of the batt is not affected.

In vorteilhafter Ausführungsform des Verfahrens werden das Einlaufband und das Deckband mit der gleichen Geschwindigkeit betrieben. Damit werden unerwünschte Verzüge vermieden.In an advantageous embodiment of the method, the infeed belt and the shroud are operated at the same speed. This avoids unwanted distortions.

Wird eine Profilierung des Vlieses gewünscht, dann kann die Legewagengeschwindigkeit relativ zur Einlaufgeschwindigkeit des Faserflors erhöht oder erniedrigt werden, um den Faserflor zu strecken oder zu stauchen.If a profiling of the nonwoven fabric is desired, then the carriage carriage speed can be increased or decreased relative to the entry speed of the batt to stretch or compress the batt.

Die Erfindung wird nachfolgend anhand eines möglichen schematisch dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Figur 1:
Eine schematische Darstellung eines Kreuzlegers nach dem Stand der Technik;
Figur 2:
eine schematische Detailansicht der Erfindung.
The invention will be explained in more detail with reference to a possible schematically illustrated embodiment. Show it:
FIG. 1:
A schematic representation of a cross-lapper according to the prior art;
FIG. 2:
a schematic detail view of the invention.

In Figur 1 ist beispielhaft und nur schematisch das Prinzip eines Kreuzlegers nach dem Stand der Technik dargestellt. Von einer nicht dargestellten Krempelanlage wird der Faserflor 3 auf ein Einlaufband 2 eines Kreuzlegers 1 transportiert. Innerhalb des Kreuzlegers 1 ist ein Oberwagen angeordnet, bei dem in dieser Darstellung nur eine Umlenkwalze 6 erkennbar ist. Weiterhin weist der Kreuzleger 1 einen Legewagen auf, von dem eine Legewalze 10 für ein Gegenband 13 und eine Legewalze 9 für das Einlaufband 2 dargestellt sind. Zwischen der Legewalze 10 des Gegenbandes 13 und der Legewalze 9 des Einlaufbandes 2 ist der sogenannte Legespalt 11 angeordnet, aus dem der Faserflor 3 austritt und auf ein unterhalb des Legewagens angeordnetes nicht dargestelltes Band abgelegt wird. Beide Legewalzen 9, 10 übernehmen fahrtrichtungsabhängig die Aufgabe, den Faserflor 3 orthogonal zur bisherigen Laufrichtung auf das unterhalb des Legewagens angeordnetes Band abzulegen und dabei zu falten. Hierzu verfährt der Legewagen in horizontaler Richtung permanent hin und her über eine voreingestellte Breite.In FIG. 1 is exemplary and only schematically illustrates the principle of a cross-lapper according to the prior art. From a carding machine, not shown, the batt 3 is transported to an infeed conveyor 2 of a cross-stacker 1. Within the cross stacker 1 an upper carriage is arranged, in which in this illustration only one guide roller 6 can be seen. Furthermore, the stacker 1 has a laying carriage, of which a laying roller 10 for a counter-belt 13 and a laying roller 9 for the inlet belt 2 are shown. Between the laying roller 10 of the counter-belt 13 and the laying roller 9 of the inlet belt 2, the so-called laying gap 11 is arranged, from which the batt 3 exits and is placed on a below the laying carriage arranged not shown tape. Both laying rollers 9, 10 assume the direction of travel, the task, the batt 3 orthogonal to the previous direction to put on the belt arranged below the laying carriage and thereby fold. For this purpose, the laying carriage moves continuously in the horizontal direction back and forth over a preset width.

Das Einlaufband 2 wird in dieser Darstellung mindestens um eine erste und zweite Umlenkwalze 4, 5 und um eine Umlenkwalze 6 des Oberwagens umgelenkt. Oberhalb des Einlaufbandes 2 ist ein Deckband 7 angeordnet, das in dieser Darstellung um eine Umlenkwalze 8, eine Umlenkwalze 6 des Oberwagens sowie eine weitere Umlenkwalze 12 geführt wird. Beide Bänder 2, 7 sind als Endlosbänder ausgeführt, die an mindestens einer weiteren nicht dargestellten Umlenkwalze angetrieben werden. Das Einlaufband 2 und das Deckband 7 laufen nicht parallel, sondern bilden einen zur Krempel hin offenen spitzen Winkel, in dem der Faserflor 3 eingezogen und leicht verdichtet wird. Der Faserflor 3 wird um die Umlenkwalze 6 des Oberwagens herum geführt, wobei das Deckband 7 mittels der Umlenkwalze 12 seitlich abgeführt wird. In genau die andere Richtung wird der Faserflor 3 transportiert, da er um die Umlenkwalze 6 des Oberwagens um 180° geführt und auf ein unterhalb des Einlaufbandes 2 parallel angeordnetes Gegenband 13 abgelegt wird. Der hier angeordnete offene Zwickel zwischen der Umlenkwalze 6 des Oberwagens und der Umlenkwalze 12 ist unerwünscht, da der Faserflor hier nicht geführt wird. Das Gegenband 13 und das Einlaufband 2 klammern bzw. führen den Faserflor 3 jetzt gemeinsam bis zum Legespalt 11, der aus dem Abstand der beiden Legewalzen 9 und 10 des Legewagens gebildet wird. Der Faserflor 3 tritt aus dem Legespalt 11 aus und wird auf ein nicht dargestelltes unterhalb des Legespaltes 11 angeordnetes Ablageband gelegt. Im Bereich des Legespaltes 11 ergibt sich die Situation, dass auf der Legewalze 10 des Legewagens der Faserflor 3 nicht geführt wird und dadurch ein unerwünschter schwimmender Verzug auftritt.In this illustration, the infeed belt 2 is deflected at least by a first and second deflection roller 4, 5 and around a deflection roller 6 of the superstructure. Above the inlet belt 2, a shroud 7 is arranged, which is guided in this illustration to a guide roller 8, a guide roller 6 of the upper carriage and a further guide roller 12. Both bands 2, 7 are designed as endless belts which are driven on at least one further deflection roller, not shown. The infeed belt 2 and the shroud 7 do not run parallel, but form an open angle to the carding machine, in which the fiber web 3 is pulled in and slightly compressed. The batt 3 is guided around the deflection roller 6 of the superstructure around, wherein the shroud 7 is discharged laterally by means of the guide roller 12. In exactly the other direction of the batt 3 is transported because it is guided around the guide roller 6 of the superstructure by 180 ° and stored on a below the infeed belt 2 arranged in parallel counter-belt 13. The here arranged open gusset between the guide roller 6 of the upper carriage and the guide roller 12 is undesirable because the batt is not performed here. The opposite band 13 and the infeed belt 2 cling or guide the batt 3 now together to the laying nip 11, which is formed from the distance between the two laying rollers 9 and 10 of the laying carriage. The batt 3 exits from the laying nip 11 and is placed on a not shown below the laying nip 11 arranged depositing belt. In the area of the laying nip 11 there is the situation that on the laying roller 10 of the laying carriage of the batt 3 is not performed and thus an undesirable floating delay occurs.

In Figur 2 wird ein Einlaufband 2 mindestens um eine erste und zweite Umlenkwalze 4, 5, um die Umlenkwalze 6 des Oberwagens und um die Legewalze 9 des Legewagens geführt. Das Deckband 7 läuft mindestens um die Umlenkwalze 8, die Umlenkwalze 6 des Oberwagens und um die Legewalze 10 des Legewagens. Beide Bänder 2, 7 sind als Endlosbänder ausgeführt, die an mindestens einer weiteren nicht dargestellten Umlenkwalze angetrieben werden. Der Einlaufbereich des Kreuzlegers wird durch die erste Umlenkwalze 4 mit dem Einlaufband 2 gebildet. Oberhalb der Umlenkwalze 4 ist die Umlenkwalze 8 des Deckbandes 7 angeordnet.In FIG. 2 an infeed belt 2 is guided at least around a first and second deflection roller 4, 5, around the deflection roller 6 of the superstructure and around the laying roller 9 of the laying carriage. The shroud 7 runs at least around the guide roller 8, the guide roller 6 of the superstructure and the laying roller 10 of the laying carriage. Both bands 2, 7 are designed as endless belts which are driven on at least one further deflection roller, not shown. The inlet region of the cross straightener is formed by the first deflection roller 4 with the inlet belt 2. Above the guide roller 4, the guide roller 8 of the shroud 7 is arranged.

Der Faserflor 3 wird vom Einlaufbereich des Kreuzlegers 1 ohne Bandwechsel bis zum Legespalt 11 des Legewagens transportiert. Damit werden alle offenen Zwickel sowie unerwünschte schwimmende Verzüge vermieden. Im Einlaufbereich des Kreuzlegers 1 laufen das Deckband 7 und das Einlaufband 2 im spitzen Winkel oder keilförmig aufeinander zu, in dem der Faserflor 3 eingezogen und leicht verdichtet wird. Das Deckband 2 ist so ausgeführt, dass die mitgeschleppte Luft beispielsweise über Öffnungen im Band entweichen kann. Hierzu eignen sich insbesondere Siebbänder. Dadurch, dass das Deckband 7 vollständig um die Umlenkwalze 6 des Oberwagens geführt wird, entsteht kein offener Zwickel. Gleichzeitig entsteht kein schwimmender Verzug, da der Faserflor 3 zwischen Oberwagen und Legewagen gleichbleibend zwischen zwei Bändern 2 und 7 geklemmt bzw. fixiert wird. Das Gegenband 13 entfällt, dessen Geschwindigkeit nach dem Stand der Technik ebenfalls mit der Geschwindigkeit des Einlaufbandes 2 synchronisiert werden müsste. Erfindungsgemäß umläuft das Deckband 7 die drei Walzen 8, 6, 10 mit jeweils annähernd 180°, wobei das Deckband 7 drei Richtungsänderungen erfährt. Der Faserflor 3 wird durch das Einlaufband 2 mit dem Deckband 7 zuerst vom Einlaufbereich des Kreuzlegers 1 zum Oberwagen transportiert, dort um die Umlenkwalze 6 des Oberwagens um 180° herum gelenkt, um aus dem Legespalt 11 auszutreten. Um einen Verzug oder ein Stauchen des Faserflors 3 zu erreichen, kann die Legewagengeschwindigkeit relativ zur Einlaufgeschwindigkeit des Faserflors erhöht oder erniedrigt werden. Das heißt, die Legewalzen 9 und 10 verfahren in horizontaler hin- und hergehender Richtung schneller.The batt 3 is transported from the inlet area of the cross stacker 1 without tape change to the laying gap 11 of the laying carriage. This avoids all open gussets as well as unwanted floating delays. In the inlet region of the cross-stacker 1, the shroud 7 and the infeed belt 2 run at an acute angle or wedge-shaped toward one another, in which the fiber web 3 is drawn in and slightly compacted. The shroud 2 is designed so that the entrained air can escape, for example via openings in the belt. For this purpose, in particular sieve belts are suitable. The fact that the shroud 7 is guided completely around the deflection roller 6 of the superstructure, no open gusset is formed. At the same time there is no floating delay, since the batt 3 is clamped or fixed between the superstructure and laying carriage consistently between two bands 2 and 7. The counterband 13 is omitted, the speed of the prior art would also be synchronized with the speed of the intake belt 2. According to the invention, the shroud 7 rotates around the three rollers 8, 6, 10, each with approximately 180 °, the shroud 7 undergoing three changes of direction. The batt 3 is first transported by the inlet belt 2 with the shroud 7 from the inlet region of the cross stacker 1 to the superstructure, there to the guide roller. 6 of the superstructure steered around 180 ° to exit from the Leg gap 11. In order to achieve a distortion or a compression of the batt 3, the laying carriage speed can be increased or decreased relative to the entry speed of the batt. That is, the laying rollers 9 and 10 move faster in the horizontal reciprocating direction.

Sowohl das Einlaufband 2 wie auch das Deckband 7 haben, wie durch die Pfeile dargestellt, die für den Faserflor 3 gleiche Laufrichtung und üblicherweise die gleiche Geschwindigkeit. In einem gewissen Maß kann die Faserorientierung an der Oberfläche in Relation zur neutralen Faser des Faserbandes beeinflusst werden, wenn beide Bänder 2, 7 mit geringfügig unterschiedlichen Geschwindigkeiten betrieben werden.Both the infeed belt 2 and the shroud 7, as shown by the arrows, have the same running direction for the batt 3 and usually the same speed. To a certain extent, the fiber orientation at the surface can be affected in relation to the neutral fiber of the sliver if both belts 2, 7 are operated at slightly different speeds.

Bezugszeichenreference numeral

11
Kreuzlegerstacker
22
Einlaufbandinfeed conveyor
33
Faserflorbatt
44
erste Umlenkwalzefirst deflecting roller
55
zweite Umlenkwalzesecond guide roller
66
Umlenkwalze OberwagenGuide roller uppercarriage
77
Deckbandshroud
88th
Umlenkwalzedeflecting
99
Legewalzeput roller
1010
Legewalzeput roller
1111
Legespaltlaying gap
1212
Umlenkwalzedeflecting
1313
Gegenbandagainst band

Claims (11)

  1. Crosslapper for drafting a nonwoven from several layers of fibrous web comprising at least one endless belt (2), that transports the fibrous web (3) from the feed section of the crosslapper (1) up to a laying gap (11) of a laydown carriage, also comprising an endless cover belt (7) that fixes the fibrous web (3) to the feed belt (2), characterised in that the cover belt (7) fixes the fibrous web (3) to the feed belt (2) from the feed section of the crosslapper (1) up to the laying gap (11) without interruption.
  2. Crosslapper according to claim 1, characterised in that the cover belt (7) is guided around at least one deflection roll (8) in the feed section of the crosslapper (1), around a deflection roll (6) in the upper carriage and around a laying roll (10) in the laying carriage.
  3. Crosslapper according to claim 1, characterised in that the cover belt (7) in the feed section of the crosslapper (1) is arranged at a sharp angle to the feed belt (2).
  4. Crosslapper according to claim 1, characterised in that the cover belt (7) has perforations.
  5. Crosslapper according to claim 4, characterised in that the cover belt (7) is embodied as a perforated belt.
  6. Crosslapper according to one of the foregoing claims, characterised in that the cover belt (7) has the same speed as the feed belt (2).
  7. Crosslapper according to one of the foregoing claims, characterised in that the cover belt (7) has a higher or lower speed than the feed belt (2).
  8. Method for operating a crosslapper in which a fibrous web (3) is transported on a feed belt (2) from the feed section of the crosslapper (1) up to a laying gap (11), characterised in that the fibrous web (3) is fixed to the feed belt (2) by a cover belt (7) from the feed section of the crosslapper (1) up to the laying gap (11) without interruption.
  9. Method according to claim 8, characterised in that the feed belt (2) and the cover belt (7) are operated at the same speed.
  10. Method according to claim 8, characterised in that the feed belt (2) and the cover belt (7) are operated at different speeds.
  11. Method according to claim 8, operated with a plant according to claims 1 to 7.
EP13003587.6A 2012-10-02 2013-07-17 Stacker and method for operating a stacker Not-in-force EP2716801B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012019363.7A DE102012019363A1 (en) 2012-10-02 2012-10-02 Cross-stacker and method for operating a cross-stacker

Publications (3)

Publication Number Publication Date
EP2716801A2 EP2716801A2 (en) 2014-04-09
EP2716801A3 EP2716801A3 (en) 2015-05-13
EP2716801B1 true EP2716801B1 (en) 2016-09-07

Family

ID=48808140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003587.6A Not-in-force EP2716801B1 (en) 2012-10-02 2013-07-17 Stacker and method for operating a stacker

Country Status (3)

Country Link
EP (1) EP2716801B1 (en)
CN (1) CN103710884B (en)
DE (1) DE102012019363A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3015577A1 (en) * 2014-10-27 2016-05-04 Oskar Dilo Maschinenfabrik KG Fibrous web laying device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE202004020165U1 (en) * 2004-12-23 2006-05-04 Autefa Automation Gmbh lapper
DE102006028448A1 (en) 2006-06-21 2007-12-27 ERKO Trützschler GmbH stacker
DE102010050027A1 (en) * 2010-11-02 2012-05-03 Trützschler Nonwovens Gmbh stacker
EP2479321A1 (en) * 2011-01-19 2012-07-25 Oskar Dilo Maschinenfabrik KG Fibrous web laying device

Also Published As

Publication number Publication date
CN103710884A (en) 2014-04-09
CN103710884B (en) 2017-10-17
EP2716801A3 (en) 2015-05-13
DE102012019363A1 (en) 2014-04-03
EP2716801A2 (en) 2014-04-09

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