EP0071033B1 - Laying of a fibre sheet - Google Patents

Laying of a fibre sheet Download PDF

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Publication number
EP0071033B1
EP0071033B1 EP82105836A EP82105836A EP0071033B1 EP 0071033 B1 EP0071033 B1 EP 0071033B1 EP 82105836 A EP82105836 A EP 82105836A EP 82105836 A EP82105836 A EP 82105836A EP 0071033 B1 EP0071033 B1 EP 0071033B1
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EP
European Patent Office
Prior art keywords
fleece
delivery
belts
web
layering apparatus
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP82105836A
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German (de)
French (fr)
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EP0071033A1 (en
Inventor
Johann P. Dipl.-Ing. Dilo
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Oskar Dilo Maschinenfabrik KG
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Oskar Dilo Maschinenfabrik KG
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Priority to AT82105836T priority Critical patent/ATE11577T1/en
Publication of EP0071033A1 publication Critical patent/EP0071033A1/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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the invention relates to a pile layer for forming a nonwoven fabric consisting of a plurality of pile layers, with the pile web consisting of textile fibers supplied, on a movable base or on the already laid pile web, which is laid in a zigzag shape and on which lies between two end positions Movable slides arranged conveying means and the continuously fed card web supporting and meanwhile storing and transporting conveyor belts.
  • Pile layers of this type have a number of disadvantages.
  • the masses moved back and forth are relatively large, which limits the performance, and on the other hand, a fiber bulge forms at the edges of the nonwoven, since the card web is fed at a constant speed during the reciprocating movement of the carriage while the sled has a momentary standstill there and a deceleration and acceleration phase in front of and behind it.
  • the transfer of the card web from one conveyor belt to the other is stretched and compressed, which leads to an inhomogeneity of the card web.
  • the second type of pile layer is the flat layer, which has a lower overall height.
  • a disadvantage of these pile layers is the relatively large mass that can be moved back and forth. They have the advantage over steep-arm layers that the pile elongation and compression is less than with the former, but the formation of marginal ridges is not eliminated with them.
  • the card web is continuously guided from the entry point to the delivery point between two conveyor belts lying parallel to one another, thereby protecting the pile, which is sensitive to air turbulence, which enables high delivery speeds.
  • the pile delivery speed is controlled in such a way that it becomes zero at the turning points of the carriage in order to avoid the thickening in the area of the fleece edges.
  • these flat layers have the extremely serious disadvantage that they are mechanically very complex and that large masses have to be moved back and forth. This is particularly evident from the fact that the conveyor belts guiding the card web generally have a width of 2.5 m. In operation, it can be disadvantageous that air is torn between the belts, in particular at high speeds, which form air cushions which impair the cohesion of the pile and cause malfunctions.
  • the invention has for its object to propose a novel pile layer in a flat construction, which avoids the aforementioned disadvantages of the known pile layers and which allows a very high working speed with better quality of the nonwoven fabric produced.
  • the supplied card web is moved by means of air-permeable conveying means, against the surface of which the card web is pressed by means of an adjustable and controllable air flow.
  • This measure ensures that practically half of the funds previously required for guiding and supporting the card web can be dispensed with.
  • this method treats the cardboard web more gently while it is led through the machine to the depositing point and practically does not change its homogeneity.
  • the air flow pressing the card web against the surface of the conveying means is advantageously generated by means of a vacuum located on the rear side of the conveying means.
  • two air-permeable conveyor belts arranged at a distance one above the other are in a stationary rest position, that is to say that they do not carry out any translational back and forth movement.
  • the transfer of the card web from the first upper conveyor belt to the second conveyor belt below it follows by means of a pile transfer roller which is moved back and forth between two end positions between the two conveyor belts;
  • the card web is removed from the lower conveyor belt by means of a reciprocating pile removal and depositing device and laid in the usual way.
  • the translationally reciprocable masses only consist of the pile transfer roller which is reciprocated between the two conveyor belts and the reciprocating pile removal and depositing device.
  • the laying device 11 of the pile layer consists of two horizontal, parallel and spaced-apart endless conveyor belts 12 and 13, which are permeable to air and guided over the deflection rollers 14, 15 and 16, 17, respectively.
  • the conveyor belts 12 and 13 can be of a wide variety of structures. They can consist of a mesh, a perforated plate, a wire rack or any other suitable material.
  • a further conveyor belt 18 is arranged below the feed end of the upper conveyor belt 12, with which the card web 19 to be laid is continuously fed to the lower run 20 of the upper conveyor belt 12.
  • a pile transfer roller 24 is provided between them, which advantageously also has an air-permeable jacket 25, behind which there is at least a portion circumferential vacuum chamber 26 carried by the axis of the roller 24.
  • the pile transfer roller 24 can be moved back and forth between two end positions A and B.
  • the card web 19 resting on the upper run 23 is guided to the underside, from where it is removed from the lower run 28 of the lower conveyor belt 13 by means of the pile removal and depositing device 27 and while of the back and forth of the carriage of the pile removal and depositing device 27 is placed on the already formed layers of the nonwoven fabric 29, which lies on a conveyor belt 30, which is moved transversely or lengthwise to the laying device 11.
  • the vacuum in the vacuum chambers can be regulated and controlled in order to obtain a correspondingly desired air flow.
  • the air flow in this area must either be reduced or interrupted, which is done either by reducing or releasing the vacuum, or by covering the openings of the vacuum chambers, for example by means of a cover plate 31 or 32, which is moved with the associated movable elements between the conveyor belt 12 or 13 and the vacuum chambers 21 or 22.
  • both the upper and lower conveyor belts 12, 13 are each kinematically coupled to the pile transfer roller, which is expediently carried out by means of toothed belts, roller chains or the like which rotate synchronously with the conveyor belts and a gearwheel which engages with them and is coupled to the pile transfer roller. as is also the case with respect to the drive mechanism of the pile removal and deposit device 27 shown in FIG.
  • Fig. 2 which shows a plan view of the underside of the pile picking and depositing device 27, the drive mechanism is apparent.
  • the pile removal and depositing device 27, which can be moved back and forth under the lower run 28 of the lower conveyor belt 13, consists of a slide 27a running on rails, on which the two rollers 33 and 34 are rotatably mounted;
  • the rollers 33 and 34 are coupled to one another and rotate in opposite directions to one another via gears 33b, 34b which are seated on their shafts 33a, 34a and are in engagement with one another.
  • the two toothed belts 33d and 34d can be driven via a manual transmission.
  • the mode of operation of the pile layer designed according to the invention is as follows: the pile transfer roller 24 is in position B and the lower conveyor belt 13 is stationary.
  • the card web 19 is fed by means of the feed conveyor belt 18 to the lower run 20 of the upper conveyor belt 12 moving at a constant speed.
  • the pile moves during this card web feed Transfer roller 24 to the left until the end position A.
  • the lower conveyor belt 13 is set in motion.
  • the pile transfer roller 34 transfers the card web 19 to the upper run 23 of the lower conveyor belt 12, which brings the card web to the underside of the lower run 28.
  • the Waize33 takes the card web 19 from the lower run 28 of the lower conveyor belt 13, which is deposited by the second roller 34 onto the upper layer of the nonwoven fabric 29 .
  • the lower conveyor belt 13 is at a standstill.
  • the movement of the removal and depositing device 27 is reversed so that it then moves against the left end position.
  • the lower conveyor belt 13 then runs, from which the card web 19 is removed by the roller 33 and deposited to form a further layer.
  • the card web layer deposited by the removal and depositing device 27 is expediently pressed against the nonwoven fabric 29 by means of the pressure rollers 35, 36.

Abstract

Fleece layering apparatus for forming a fibrous fabric web consisting of several layers of fleece with delivery means layering the infed fleece in a zig-zag manner, with which the infed fleece is moved by air-permeable delivery means against the surface of which the web of fleece is pressed by a controlled and regulated air flow, and with an upper fixed air-permeable delivery belt and a lower fixed air-permeable delivery belt vertically spaced beneath the upper one and parallel to it, between which a preferably air-permeable fleece transferring roll is provided which can move backwards and forwards between two end positions, and beneath the lower delivery belt, a fleece doffing and cuttling device is provided which can move backwards and forwards between two end positions.

Description

Die Erfindung betrifft einen Florleger zum Bilden eines aus mehreren Florlagen bestehenden Faservlieses, mit die zugeführte austextilen Fasern bestehende Florbahn auf einer bewegbaren Unterlage bzw. auf der von der Unterlage getragenen, bereits gelegten Florbahn zick-zack-förmig ablegenden, auf einem zwischen zwei Endlagen hinund herbewegbaren Schlitten angeordneten Fördermitteln sowie die kontinuierlich zugeführte Florbahn stützenden und zwischenzeitlich speichernden sowie transportierenden Förderbändern.The invention relates to a pile layer for forming a nonwoven fabric consisting of a plurality of pile layers, with the pile web consisting of textile fibers supplied, on a movable base or on the already laid pile web, which is laid in a zigzag shape and on which lies between two end positions Movable slides arranged conveying means and the continuously fed card web supporting and meanwhile storing and transporting conveyor belts.

Zur Herstellung von Faservliesen werden bisher zwei Typen von Florlegern verwendet, und zwar die Steilarmleger bzw. Kamelrückenquerleger, bei welchen die zugeführte Florbahn mittels Förderbändern zu einem Punkt hoch über dem zu bildenden Vlies und von dort mittels zweier Förderbänder nach unten zu einem oberhalb des Faservlieses hin- und her-pendelnd geführten Schlitten mit Ablegewalzen transportiert wird.Up to now, two types of pile layers have been used for the production of nonwoven fabrics, namely the steep arm layers or camel back transverse layers, in which the card web fed by means of conveyor belts to a point high above the nonwoven to be formed and from there by means of two conveyor belts down to one above the nonwoven fabric - and swinging guided sled is transported with laying rollers.

Florleger dieser Art haben eine Reihe von Nachteilen. Einerseits sind die hin- und her-bewegten Massen relativ groß, wodurch die Leistungsfähigkeit begrenzt ist, und andererseits bildet sich an den Rändern des Faservlieses ein Faserwulst, da an den Umkehrpunkten des Schlittens bei dessen hin- und hergehenden Bewegung die Florbahn mit konstanter Geschwindigkeit zugeführt wird, während der Schlitten dort einen momentanen Stillstand und vor und hinter diesem eine Verzögerungs- und Beschleunigungsphase hat. Weiterhin wird an den Übergabestellen der Florbahn von einem Förderband auf das andere diese gedehnt und gestaucht, was zu einer Inhomogenität der Florbahn führt.Pile layers of this type have a number of disadvantages. On the one hand, the masses moved back and forth are relatively large, which limits the performance, and on the other hand, a fiber bulge forms at the edges of the nonwoven, since the card web is fed at a constant speed during the reciprocating movement of the carriage while the sled has a momentary standstill there and a deceleration and acceleration phase in front of and behind it. Furthermore, the transfer of the card web from one conveyor belt to the other is stretched and compressed, which leads to an inhomogeneity of the card web.

Die zweite Art der Florleger sind die Flachleger, die eine geringere Bauhöhe aufweisen. Nachteilig bei diesen Florlegern sind die relativ großen, hin und her zu bewegenden Massen. Den Steilarmlegern gegenüber haben sie zwar den Vorteil, daß die Flordehnung und -stauchung geringer ist als bei ersteren, jedoch ist bei ihnen die Bildung von Randwülsten nicht beseitigt.The second type of pile layer is the flat layer, which has a lower overall height. A disadvantage of these pile layers is the relatively large mass that can be moved back and forth. They have the advantage over steep-arm layers that the pile elongation and compression is less than with the former, but the formation of marginal ridges is not eliminated with them.

Bei einem verbesserten Flachtäfler der in Betracht gezogenen Art wird die Florbahn von der Eingabe- bis zur Abgabestelle ständig zwischen zwei parallel zueinander liegenden Förderbändern geführt, wodurch der gegenüber Luftturbulenzen empfindliche Flor geschützt wird, was hohe Liefergeschwindigkeiten ermöglicht. Außerdem ist die Florabgabegeschwindigkeit so gesteuert, daß sie an den Umkehrpunkten des Wagens Null wird, um die Verdickungen im Bereich der Vliesränder zu vermeiden. Diese Flachleger haben jedoch den außerordentlich schwerwiegenden Nachteil, daß sie mechanisch sehr aufwendig sind und daß große Massen hin- und herbewegt werden müssen. Dies ist besonders daraus ersichtlich, daß die die Florbahn führenden Förderbänder in der Regel eine Breite von 2,5 m haben. Im Betrieb kann es sich nachteilig auswirken, daß insbesondere bei hohen Geschwindigkeiten Luft zwischen die Bänder gerissen wird, die Luftpolster bilden, welche den Zusammenhalt des Flors beeinträchtigen und Störungen verursachen.In the case of an improved flat wicker of the type under consideration, the card web is continuously guided from the entry point to the delivery point between two conveyor belts lying parallel to one another, thereby protecting the pile, which is sensitive to air turbulence, which enables high delivery speeds. In addition, the pile delivery speed is controlled in such a way that it becomes zero at the turning points of the carriage in order to avoid the thickening in the area of the fleece edges. However, these flat layers have the extremely serious disadvantage that they are mechanically very complex and that large masses have to be moved back and forth. This is particularly evident from the fact that the conveyor belts guiding the card web generally have a width of 2.5 m. In operation, it can be disadvantageous that air is torn between the belts, in particular at high speeds, which form air cushions which impair the cohesion of the pile and cause malfunctions.

Aus der DE-A-26 54 895 ist ein Florleger bekanntgeworden, bei welchem ein hin- und herbewegbarer Schlitten zwei Förderbänder aufweist, die der Übernahme, Speicherung und der Ablage eines mittels eines weiteren Förderbandes zugeführten Flors dienen. Gegenstand dieser Veröffentlichung ist jedoch in erster Linie eine Regelvorrichtung für ein periodisch schwingendes Teil, dessen Anschläge in beiden Richtungen bei Nichteinhaltung eines Gleichgewichtszustandes unterschiedlich voneinander sind.From DE-A-26 54 895 a pile layer has become known, in which a reciprocating carriage has two conveyor belts, which are used for the takeover, storage and storage of a pile fed by means of a further conveyor belt. The subject of this publication, however, is primarily a control device for a periodically oscillating part, the stops of which are different from one another in both directions if a state of equilibrium is not maintained.

Bei diesem vorbekannten Florleger wird mit Hilfe einer Steuerkette und einer Meßkette ein Differential gebildet, um eine translatorische Bewegung des Speicherwagens zu bewirken. Dieser vorbekannte Florleger hat den Nachteil, daß zur Verwirklichung der Kinematik ein verhältnismäßig komplizierter Mechanismus erforderlich ist, ferner, daß die translatorisch bewegten Massen relativ groß sind und weiterhin, daß der Flor beim Durchlauf durch die Maschine nicht ständig geführt und stets im Kontakt mit einer Unterlage od. dgl. gehalten wird. Dies bedeutet letztlich ein ungleichmäßiges Material.In this previously known pile layer, a differential is formed with the aid of a control chain and an electrode in order to bring about a translatory movement of the storage carriage. This previously known pile layer has the disadvantage that a relatively complicated mechanism is required to achieve the kinematics, furthermore that the translationally moving masses are relatively large and furthermore that the pile is not constantly guided during passage through the machine and is always in contact with a base or the like. is held. Ultimately, this means an uneven material.

Der Erfindung liegt die Aufgabe zugrunde, einen neuartigen Florleger in Flachkonstruktion vorzuschlagen, welcher die vorerwähnten Nachteile der vorbekannten Florleger vermeidet und der bei besserer Qualität des erzeugten Faservlieses eine sehr hohe Arbeitsgeschwindigkeit zuläßt.The invention has for its object to propose a novel pile layer in a flat construction, which avoids the aforementioned disadvantages of the known pile layers and which allows a very high working speed with better quality of the nonwoven fabric produced.

Zur Lösung dieser Aufgabe wird gemäß der Erfindung vorgeschlagen, daß die zugeführte Florbahn mittels luftdurchlässiger Fördermittel bewegt wird, gegen deren Oberfläche die Florbahn mittels eines regelbaren und steuerbaren Luftstromes angedrückt wird.To achieve this object it is proposed according to the invention that the supplied card web is moved by means of air-permeable conveying means, against the surface of which the card web is pressed by means of an adjustable and controllable air flow.

Durch diese Maßnahme wird erreicht, daß praktisch die Hälfte der bisher für die Führung und Stützung der Florbahn benötigten Fördermittel entfallen kann. Außerdem wird durch diese Methode die Florbahn schonender behandelt, während sie durch die Maschine zur Ablegestelle geführt wird und ihre Homogenität praktisch nicht verändert.This measure ensures that practically half of the funds previously required for guiding and supporting the card web can be dispensed with. In addition, this method treats the cardboard web more gently while it is led through the machine to the depositing point and practically does not change its homogeneity.

Vorteilhafterweise wird der die Florbahn gegen die Oberfläche der Fördermittel andrückende Luftstrom mittels eines sich auf der Rückseite der Fördermittel befindlichen Vakuums erzeugt.The air flow pressing the card web against the surface of the conveying means is advantageously generated by means of a vacuum located on the rear side of the conveying means.

Bei dem erfindungsgemäß vorgeschlagenen flach gebauten Florleger befinden sich zwei im Abstand übereinander angeordnete luftdurchlässige Förderbänder in stationärer Ruhelage, d. h. daß sie keine translatorische Hin- und Herbewegung ausführen. Die Übertragung der Florbahn von dem ersten oberen Förderband auf das darunter befindliche zweite Förderband erfolgt mittels einer Florübertragungswalze, welche zwischen zwei Endlagen zwischen den beiden Förderbändern hin- und herbewegt wird ; von dem unteren Förderband wird die Florbahn mittels einer hin- und herbewegbaren Florabnahme-und -ablegevorrichtung abgenommen und in üblicher Weise gelegt. Somit bestehen die translatorischen hin- und herbewegbaren Massen nur noch aus der zwischen den zwei Förderbändern hin- und herbewegten Florübertragungswalze und der hin- und herbewegten Florabnahme- und -ablegevorrichtung.In the flat pile pile pile proposed according to the invention, two air-permeable conveyor belts arranged at a distance one above the other are in a stationary rest position, that is to say that they do not carry out any translational back and forth movement. The transfer of the card web from the first upper conveyor belt to the second conveyor belt below it follows by means of a pile transfer roller which is moved back and forth between two end positions between the two conveyor belts; The card web is removed from the lower conveyor belt by means of a reciprocating pile removal and depositing device and laid in the usual way. Thus, the translationally reciprocable masses only consist of the pile transfer roller which is reciprocated between the two conveyor belts and the reciprocating pile removal and depositing device.

Weitere Merkmale gehen aus den Unteransprüchen und der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels eines erfindungsgemäß ausgebildeten Florlegers hervor. Die Zeichnung zeigt in schematischer Darstellung einen Querschnitt durch den Florleger.Further features emerge from the subclaims and the following description of a preferred exemplary embodiment of a pile layer designed according to the invention. The drawing shows a schematic representation of a cross section through the pile layer.

Wie aus Fig. 1 der Zeichnung ersichtlich, besteht die Legevorrichtung 11 des Florlegers aus zwei horizontalen, parallel zueinander und im Abstand voneinander angeordneten endlosen Förderbändern 12 und 13, welche luftdurchlässig und über die Umlenkwalzen 14, 15 bzw. 16, 17 geführt sind. Die Förderbänder 12 und 13 können unterschiedlichsten Aufbaus sein. Sie können aus einem Maschengitter, einem Lochblech, einem Stabrost oder aus sonst geeignetem Material bestehen.As can be seen from FIG. 1 of the drawing, the laying device 11 of the pile layer consists of two horizontal, parallel and spaced-apart endless conveyor belts 12 and 13, which are permeable to air and guided over the deflection rollers 14, 15 and 16, 17, respectively. The conveyor belts 12 and 13 can be of a wide variety of structures. They can consist of a mesh, a perforated plate, a wire rack or any other suitable material.

Unterhalb des Zuführendes des oberen Förderbandes 12 ist ein weiteres Förderband 18 angeordnet, mit welchem die zu legende Florbahn 19 dem unteren Trum 20 des oberen Förderbandes 12 kontinuierlich zugeführt wird. Zwischen den jeweils oberen und unteren Trums des oberen und auch des unteren Förderbandes 12, 13 befinden sich eine Vielzahl von parallel nebeneinander liegenden Vakuumkammern 21 bzw. 22, welche nach den in Betracht kommenden, den Förderbändern zugekehrten Seiten offen sind oder Öffnungen aufweisen und welche einen Luftstrom in Richtung auf die Förderbänder erzeugen, durch welchen die Florbahn an deren Oberfläche in schonender Weise angedrückt wird. Um die Florbahn 19 von dem unteren Trum 20 des oberen Förderbandes12 auf das obere Trum 23 des unteren Förderbandes 15 zu übertragen, ist zwischen diesen eine Florübertragungswalze 24 vorgesehen, die vorteilhafterweise gleichfalls einen luftdurchlässigen Mantel 25 aufweist, hinter welchem sich die sich wenigstens über einen Teil des Umfangs erstreckende, von der Achse der Walze 24 getragene Vakuumkammer26 befindet. Die Florübertragungswalze 24 ist zwischen zwei Endlagen A und B hin- und herbewegbar.A further conveyor belt 18 is arranged below the feed end of the upper conveyor belt 12, with which the card web 19 to be laid is continuously fed to the lower run 20 of the upper conveyor belt 12. Between the respective upper and lower runs of the upper and also the lower conveyor belt 12, 13 there are a plurality of parallel vacuum chambers 21 and 22, which are open or have openings after the sides that come into consideration, facing the conveyor belts, and which have one Generate air flow in the direction of the conveyor belts, by means of which the card web is pressed onto its surface in a gentle manner. In order to transfer the card web 19 from the lower run 20 of the upper conveyor belt 12 to the upper run 23 of the lower conveyor belt 15, a pile transfer roller 24 is provided between them, which advantageously also has an air-permeable jacket 25, behind which there is at least a portion circumferential vacuum chamber 26 carried by the axis of the roller 24. The pile transfer roller 24 can be moved back and forth between two end positions A and B.

Mittels des periodisch aber stets in gleicher Richtung umlaufenden unteren Förderbandes 13 wird die auf dem oberen Trum 23 aufliegende Florbahn 19 auf die Unterseite geführt, von wo sie mittels der Florabnahme- und -ablegevorrichtung 27 einerseits vom unteren Trum 28 des unteren Förderbandes 13 abgenommen und während des Hin- und Hergangs des Schlittens der Florabnahme- und -ablegevorrichtung 27 auf die bereits gebildeten Lagen des Faservlieses 29 abgelegt wird, welches auf einem Förderband 30 aufliegt, welches quer oder auch längs zur Legevorrichtung 11 bewegt wird.By means of the lower conveyor belt 13, which periodically but always rotates in the same direction, the card web 19 resting on the upper run 23 is guided to the underside, from where it is removed from the lower run 28 of the lower conveyor belt 13 by means of the pile removal and depositing device 27 and while of the back and forth of the carriage of the pile removal and depositing device 27 is placed on the already formed layers of the nonwoven fabric 29, which lies on a conveyor belt 30, which is moved transversely or lengthwise to the laying device 11.

Das Vakuum in den Vakuumkammern ist regel-und steuerbar, um einen entsprechend gewünschten Luftstrom zu erhalten. Insbesondere an denjenigen Stellen, wo die Florbahn von dem sie tragenden Förderband abgenommen wird, muß der Luftstrom in diesem Bereich entweder reduziert oder unterbrochen werden, was entweder durch Verringerung oder Aufhebung des Vakuums erfolgt, oder aber durch eine Abdeckung der Öffnungen der Vakuumkammern, beispielsweise mittels einer Abdeckplatte 31 bzw. 32, welche mit den ihnen zugeordneten bewegbaren Elementen zwischen dem Förderband 12 bzw. 13 und den Vakuumkammern 21 bzw. 22 bewegt wird.The vacuum in the vacuum chambers can be regulated and controlled in order to obtain a correspondingly desired air flow. Particularly in those places where the card web is removed from the conveyor belt carrying it, the air flow in this area must either be reduced or interrupted, which is done either by reducing or releasing the vacuum, or by covering the openings of the vacuum chambers, for example by means of a cover plate 31 or 32, which is moved with the associated movable elements between the conveyor belt 12 or 13 and the vacuum chambers 21 or 22.

Während des Zuführförderband 18 wie auch das obere Förderband 12 stets mit konstanter Geschwindigkeit und in gleicher Richtung bewegt werden, wird das untere Förderband 13 periodisch gesteuert in entgegengesetzter Richtung bewegt. Sowohl das obere als auch das untere Förderband 12, 13 sind jeweils mit der Florübertragungswalze kinematisch gekoppelt, was zweckmäßigerweise mittels mit den Förderbändern synchron umlaufenden Zahnriemen', Rollenketten od. dgl. und einem mit diesen in Eingriff stehenden, mit der Florübertragungswalze gekuppelten Zahnrad erfolgt, so wie dies auch hinsichtlich des in Fig.2 dargestellten Antriebsmechanismus der Florabnahme- und -ablegevorrichtung 27 der Fall ist.While the feed conveyor belt 18 and the upper conveyor belt 12 are always moved at a constant speed and in the same direction, the lower conveyor belt 13 is periodically moved in the opposite direction in a controlled manner. Both the upper and lower conveyor belts 12, 13 are each kinematically coupled to the pile transfer roller, which is expediently carried out by means of toothed belts, roller chains or the like which rotate synchronously with the conveyor belts and a gearwheel which engages with them and is coupled to the pile transfer roller. as is also the case with respect to the drive mechanism of the pile removal and deposit device 27 shown in FIG.

Aus Fig. 2, die eine Aufsicht auf die Unterseite der Florabnahme- und -ablegevorrichtung 27 zeigt, geht deren Antriebsmechanismus hervor. Die unter dem unteren Trum 28 des unteren Förderbandes 13 hin- und herbewegbare Florabnahme- und -ablegevorrichtung 27 besteht aus einem auf Schienen laufenden Schlitten 27a, an welchem die beiden Walzen 33 und 34 drehbar gelagert sind ; über auf deren Wellen 33a, 34a sitzende, miteinander in Eingriff stehende Zahnräder 33b, 34b sind die Walzen 33 und 34 miteinander gekuppelt und drehen sich gegenläufig zueinander. Ihr Antrieb wie auch der des Schlittens 27a erfolgt über mit den Walzen 33 bzw. 34 verbundene Zahnräder 33c, 34c, welche mit den beiden zueinander versetzten endlos umlaufenden und abwechselnd angetriebenen Zahnriemen 33d bzw. 34d in Eingriff stehen. Der Antrieb der beiden Zahnriemen 33d und 34d kann über ein Schaltgetriebe erfolgen.From Fig. 2, which shows a plan view of the underside of the pile picking and depositing device 27, the drive mechanism is apparent. The pile removal and depositing device 27, which can be moved back and forth under the lower run 28 of the lower conveyor belt 13, consists of a slide 27a running on rails, on which the two rollers 33 and 34 are rotatably mounted; The rollers 33 and 34 are coupled to one another and rotate in opposite directions to one another via gears 33b, 34b which are seated on their shafts 33a, 34a and are in engagement with one another. They are driven, as is that of the carriage 27a, via gear wheels 33c, 34c connected to the rollers 33 and 34, which mesh with the two endlessly rotating and alternately driven toothed belts 33d and 34d, which are offset from one another. The two toothed belts 33d and 34d can be driven via a manual transmission.

Die Arbeitsweise des erfindungsgemäß ausgebildeten Florlegers ist folgende : Die Florüberfragungswalze 24 befindet sich in der Position B und das untere Förderband 13 steht still. Die Florbahn 19 wird mittels des Zuführförderbandes 18 dem unteren Trum 20 des oberen, sich mit konstanter Geschwindigkeit bewegenden Förderbandes 12 zugeführt. Während dieser Florbahnzuführung bewegt sich die Florübertragungswalze 24 nach links bis zur Endlage A. Hat sie diese erreicht, wird das untere Förderband 13 in Bewegung gesetzt. Dabei überträgt die Florübertragungswalze 34 die Florbahn 19 auf das obere Trum 23 des unteren Förderbandes 12, welches die Florbahn auf die Unterseite des unteren Trums 28 bringt. Befindet sich die Florabnahme- und -ablegevorrichtung 27 in ihrer linken Endlage, nimmt bei deren Bewegung in die rechte Endlage die Waize33 die Florbahn 19 vom unteren Trum 28 des unteren Förderbandes13, welche von der zweiten Walze 34 auf die obere Lage des Faservlieses 29 abgelegt wird. Hierbei befindet sich das untere Förderband 13 im Stillstand. Nach Erreichen der rechten Endlage wird die Bewegung der Abnahme- und -ablegevorrichtung 27 umgesteuert, so daß sie sich dann gegen die linke Endlage bewegt. Dabei läuft dann das untere Förderband 13, von welchem die Florbahn 19 durch die Walze 33 abgenommen und zur Bildung einer weiteren Lage abgelegt wird. Die von der Abnahme- und -ablegevorrichtung 27 abgelegte Florbahnlage wird zweckmäßigerweise mittels der Andrückwalzen 35, 36 gegen das Faservlies 29 angedrückt.The mode of operation of the pile layer designed according to the invention is as follows: the pile transfer roller 24 is in position B and the lower conveyor belt 13 is stationary. The card web 19 is fed by means of the feed conveyor belt 18 to the lower run 20 of the upper conveyor belt 12 moving at a constant speed. The pile moves during this card web feed Transfer roller 24 to the left until the end position A. When it has reached this, the lower conveyor belt 13 is set in motion. The pile transfer roller 34 transfers the card web 19 to the upper run 23 of the lower conveyor belt 12, which brings the card web to the underside of the lower run 28. If the pile removal and depositing device 27 is in its left end position, when it moves into the right end position, the Waize33 takes the card web 19 from the lower run 28 of the lower conveyor belt 13, which is deposited by the second roller 34 onto the upper layer of the nonwoven fabric 29 . Here, the lower conveyor belt 13 is at a standstill. After reaching the right end position, the movement of the removal and depositing device 27 is reversed so that it then moves against the left end position. The lower conveyor belt 13 then runs, from which the card web 19 is removed by the roller 33 and deposited to form a further layer. The card web layer deposited by the removal and depositing device 27 is expediently pressed against the nonwoven fabric 29 by means of the pressure rollers 35, 36.

Die kinematischen Verhältnisse bei dem erfindungsgemäß ausgebildeten Florleger sind in Fig.3 dargestellt. Sie sind überdies wie folgt beschrieben

  • - Das obere Förderband 12 läuft ständig mit Vo = konst. um.
  • - Die Übertragungswalze 24 dreht sich nur im Gegenuhrzeigersinn während deren Bewegung nach links ist ihre Translationsgeschwindigkeit + 1/2 Vo, ihre Umfangsgeschwindigkeit ω· r ist ebenfalls 1/2 Vo.
  • - Während der Bewegung der Ubertragungswalze 24 nach links steht das untere Förderband 13 still.
  • - Bei der Bewegung der Übertragungswalze 24 nach rechts bewegt sich das untere Förderband 13 mit der Geschwindigkeit 2 Vo. Die Translationsgeschwindigkeit der Ubertragungswalze 24 beträgt - 1/2 Vo, ihre Umfangsgeschwindigkeit entspricht 1 1/2 Vo.
  • - Das Walzenpaar 33, 34 bewegt sich mit der Geschwindigkeit + Vo nach links und - Vo nach rechts. Die Walzen 33, 34 drehen sich immer gegenläufig zueinander mit der Umfangsgeschwindigkeit Vo.
The kinematic conditions in the pile layer designed according to the invention are shown in FIG. They are also described as follows
  • - The upper conveyor belt 12 runs continuously with V o = constant.
  • - The transfer roller 24 only rotates counterclockwise while moving to the left is its translation speed + 1/2 V o , its peripheral speed ω · r is also 1/2 V o .
  • - During the movement of the transfer roller 24 to the left, the lower conveyor belt 13 stands still.
  • - When the transfer roller 24 moves to the right, the lower conveyor belt 13 moves at the speed 2 V o . The translation speed of the transfer roller 24 is - 1/2 V o , its peripheral speed corresponds to 1 1/2 V o .
  • - The roller pair 33, 34 moves at the speed + V o to the left and - V o to the right. The rollers 33, 34 always rotate in opposite directions to one another at the peripheral speed V o .

Claims (10)

1. Fleece layering apparatus for forming a fibrous fabric web consisting of several layers of fleece, with delivery means depositing the infed web of fleece, made up of textile fibers, in a zigzag manner onto a movable support or onto a web of fleece already laid on the support, said means being arranged on a carriage which can reciprocate between two end positions, and with delivery belts supporting the continuously infed fleece, transporting it and storing it at intervals, characterized in that the infed web of fleece (19) is moved by air-permeable delivery means (12, 13, 17, 24, 33, 34) against the surface of which the web of fleece (19) is pressed using a controlled and regulated air flow.
2. Fleece layering apparatus according to claim 1, characterized in that the air flow is produced by a vacuum present on the rear side of the delivery means (12, 13, 24, 33, 34) in a predetermined area.
3. Fleece layering apparatus according to claim 2, characterized in that on the rear side of the air-permeable delivery means (12, 13, 17, 24, 33, 34) there is arranged a number of vacuum chambers (21, 22, 26) fully or partly open towards the delivery means, there being a controllable vacuum present in said chambers.
4. Fleece layering apparatus according to one of claims 1 to 3, characterized by an upper fixed air-permeable endless delivery belt (12) and a lower fixed air-permeable endless delivery belt (13) spaced vertically beneath the upper belt and arranged parallel to it, both delivery belts being deflected by two rolls (14,15 ; 16,17) respectively, and between said delivery belts there being arranged a preferably air-permeable fleece transferring roll (24) reciprocable between two end positions, and a fleece doffing and cuttling device (27) arranged beneath the lower delivery belt (13), said device being reciprocable between two end positions.
5. Fleece layering apparatus according to one of claims 1 to 4, characterized in that the vacuum holding the web of fleece (19) on the surface of the bottom strands (20, 28) of the delivery belts (12, 13) is cut off in the effective area of the fleece transferring roll (24) and the fleece doffing device (27).
6. Fleece layering apparatus according to one of claims 1 to 5, characterized in that the upper delivery belt (12), taking up with its bottom strand (20) the web of fleece delivered at a constant speed, is always driven in the same direction and at a constant speed.
7. Fleece layering apparatus according to one of claims 1 to 6, characterized in that the lower delivery belt (13) can be driven periodically in the opposite direction to that of the upper delivery belt (12).
8. Fleece layering apparatus according to claim 6 or 7, characterized in that the upper and lower delivery belts (12,13) are both kinematically coupled with the fleece transferring roll (24).
9. Fleece layering apparatus according to claim 8, characterized in that the coupling of the delivery belts (12, 13) to the fleece transferring roll (24) takes place via toothed belts, roller chains or the like, synchronously revolving with the delivery belts, and a gear mating with said belts or chains, said gear also being coupled to the fleece transferring roll.
10. Fleece layering apparatus according to claim 8, characterized in that the fleece doffing and cuttling device (27) consists of two parallel rolls (33, 34) coupled together via gears, (33b, 34b) and mounted on a carriage (27a) which can reciprocate beneath the lower delivery belt (13), said rolls being brought into motion by gears (33c, 34c) connected thereto and toothed belts (33d, 34d) or chains mating with said gears respectively, said belts or chains being alternately driven.
EP82105836A 1981-07-01 1982-06-30 Laying of a fibre sheet Expired EP0071033B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105836T ATE11577T1 (en) 1981-07-01 1982-06-30 LAYER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813125946 DE3125946A1 (en) 1981-07-01 1981-07-01 "FLORLEGER"
DE3125946 1981-07-01

Publications (2)

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EP0071033A1 EP0071033A1 (en) 1983-02-09
EP0071033B1 true EP0071033B1 (en) 1985-01-30

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US (1) US4481694A (en)
EP (1) EP0071033B1 (en)
JP (1) JPS5836254A (en)
AT (1) ATE11577T1 (en)
DE (2) DE3125946A1 (en)

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FR2553102B1 (en) * 1983-10-07 1986-01-31 Asselin Ets SPREADER
IT1184011B (en) * 1985-12-11 1987-10-22 Fonderie Officine Riunite Ing DEVICE FOR THE PRODUCTION OF OVERLAPS OF NON-WOVEN FABRIC WITH FIBERS LONGITUDINALLY PLACED PARTICULARLY FOR THE FEEDING OF A NEEDLE QUILTING MACHINE
DE3644535A1 (en) * 1986-12-24 1988-07-14 Truetzschler & Co METHOD AND DEVICE FOR DETECTING FOREIGN BODIES LIKE FOREIGN FIBERS, BINDING THREADS, PLASTIC TAPES, WIRE OR THE LIKE. WITHIN OR BETWEEN TEXTILE FIBER BLOCKS
BE1002605A3 (en) * 1988-11-30 1991-04-09 Houget Duesberg Bosson PROCESS AND DEVICE FOR THE MANUFACTURE OF NONWOVEN TEXTILES.
US4984772A (en) * 1989-05-15 1991-01-15 E. I. Du Pont De Nemours And Company High speed crosslapper
DE4010174A1 (en) * 1990-03-30 1991-10-02 Hollingsworth Gmbh METHOD FOR DEPOSITING A FLEECE OR THE LIKE, AND FLEECE STRAP
IT1241874B (en) * 1990-07-18 1994-02-01 Veneto Feltrificio Spa METHOD AND PLANT FOR THE MANUFACTURE OF PITCHES FOR FELTS.
DE4444206A1 (en) * 1994-12-13 1996-06-20 Fleissner Maschf Gmbh Co Method and device for finishing carded nonwovens
AT402948B (en) * 1995-05-26 1997-09-25 Fehrer Ernst Method and apparatus for plaiting a nonwoven sliver
DE19618806A1 (en) * 1995-05-26 1996-11-28 Fehrer Ernst Method and device for paneling a nonwoven web
US6331268B1 (en) 1999-08-13 2001-12-18 First Quality Nonwovens, Inc. Nonwoven fabric with high CD elongation and method of making same
DE102006028448A1 (en) * 2006-06-21 2007-12-27 ERKO Trützschler GmbH stacker
DE102009055912A1 (en) * 2009-11-27 2011-06-09 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. A process for the continuous production of staple fiber webs from finely long fiber-oriented reinforcing fibers
CN102502315B (en) * 2011-09-30 2015-04-29 江苏朝阳液压机械集团有限公司 Novel automatic wall material spreading machine
DE202013105029U1 (en) * 2013-11-08 2015-02-10 Autefa Solutions Germany Gmbh lapper
CN104139993B (en) * 2014-08-19 2016-04-13 江苏朝阳液压机械集团有限公司 A kind of fabric spreading machine
CN106437156B (en) * 2016-10-10 2019-03-15 湖北银土建设工程有限公司 A kind of non-woven fabrics constructing device
CN107034587A (en) * 2017-05-15 2017-08-11 常州维盛无纺科技有限公司 The two-way combing device for layering and multilayer laying net for shaping system of ultralow base weight non-woven fabrics

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US4290170A (en) * 1980-03-27 1981-09-22 Union Carbide Corporation Device for aligning the attenuating fiber mats

Also Published As

Publication number Publication date
DE3125946A1 (en) 1983-01-20
ATE11577T1 (en) 1985-02-15
EP0071033A1 (en) 1983-02-09
US4481694A (en) 1984-11-13
JPH0248651B2 (en) 1990-10-25
JPS5836254A (en) 1983-03-03
DE3262133D1 (en) 1985-03-14

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