EP0528348B1 - Device for feeding a non-woven web, particularly a mineral wool web, onto a receiving conveyor - Google Patents

Device for feeding a non-woven web, particularly a mineral wool web, onto a receiving conveyor Download PDF

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Publication number
EP0528348B1
EP0528348B1 EP92113741A EP92113741A EP0528348B1 EP 0528348 B1 EP0528348 B1 EP 0528348B1 EP 92113741 A EP92113741 A EP 92113741A EP 92113741 A EP92113741 A EP 92113741A EP 0528348 B1 EP0528348 B1 EP 0528348B1
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EP
European Patent Office
Prior art keywords
receiving conveyor
conveyor
conveyors
woven web
web
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Expired - Lifetime
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EP92113741A
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German (de)
French (fr)
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EP0528348A1 (en
Inventor
Heimo Neuhold
Josef Wieltschnig
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Heraklith Baustoffe AG
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HERAKLITH HOLDING AG
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    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • 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 device for applying fleece, in particular mineral wool fleece, to a support belt, with a feed belt for the fleece, with two pendulum-like, essentially parallel conveyor belts between which the fleece is transported and which is in a plane perpendicular to the support belt and swing perpendicular to the direction of movement of the support belt between two reversal points, the speed of the support belt being lower than the dispensing speed of the fleece, so that it comes to rest on the support belt in at least partially overlapping layers.
  • the fleece is always discharged at a constant speed between the conveyor belts, so that an uneven layer thickness of the fleece applied to the support belt, also called secondary fleece, transversely to the direction of movement of the support belt is the result.
  • FR-A-2 117 703 it is known to convert a primary fleece into a secondary fleece, a thin primary fleece being introduced between two vertically arranged conveyor belts. These conveyor belts are attached to a pendulum frame, the pendulum axis of which is aligned with the axis of a feed belt for the secondary fleece. With the lower end, the pendulum frame engages via a pin in a vertical slot of a horizontally movable slide, which comprises two compacting rollers, by means of which the primary fleece is deposited in a scale-like manner on a support belt for the secondary fleece.
  • a linear drive is provided for the conveyor belts, which can move the conveyor belts back and forth between the variably definable reversal points with variable speed.
  • the linear drive can be controlled so that when the width of the secondary fleece to be produced or the fleece plate is fixed, this information is converted into the pendulum movement. It is also possible to vary the speed so that, for example, in one area of the support belt, the conveyor belts are continuously guided over it at a low speed, and therefore in a neighboring area at higher speed. In this way, a nonwoven plate can be produced which initially has a greater, then a lower, density transversely to the direction of movement of the support belt.
  • the fleece plate has a greater layer thickness, the slower the speed of the drive and thus the pendulum movement in the corresponding area.
  • a limit switch which determines the maximum deflection of the conveyor belts, can advantageously be arranged on each side of the support belt. These represent an emergency circuit that prevents material from being placed beyond the actual support belt.
  • a double-sided toothed belt as a linear drive, which is arranged perpendicular to the direction of movement of the support belt, the conveyor belts being fixed to a common carriage which is in engagement with the drive. This means that the movement of the conveyor belts is maintained at exactly one defined level.
  • the carriage can advantageously be provided on its underside with at least one roller, which closes contact with at least one of the limit switches.
  • an oven which is arranged essentially above the support belt and has a height adjustment on each side of the support belt, which can be adjusted independently of one another.
  • the oven can thus be adapted directly to the profile of the non-woven sheet and thus ensure optimal curing.
  • a pendulum 1 consists of an essentially horizontally arranged feed belt 10 for nonwoven material, which transports it to two conveyor belts 11, 12, which are arranged essentially parallel to one another and transport the fleece fed to them between them.
  • the conveyor belts 11, 12 are suspended in such a way that a pendulum-like movement is possible, which is coordinated in such a way that there is always a uniform conveying of nonwoven.
  • the output ends 13, 14, of the conveyor belts 11, 12 are located above a support belt 2, which moves perpendicular to the pendulum plane of the pendulum 1 at a substantially constant speed.
  • the conveyor belts 11, 12 are fixed together on a carriage 15 in their lower region, but above the discharge ends 13, 14.
  • This carriage 15 is provided with a drive sleeve 16 which engages with two toothed belts 43 belonging to a linear drive 4.
  • the toothed belts 43 are also arranged in the pendulum plane, that is to say perpendicular to the direction of movement of the support belt 2.
  • the carriage has two pairs of rollers 17, 18 at its front and rear ends, which rest on a support surface 45.
  • This support surface 45 simultaneously supports a bearing 44 and a gear 42, the drive rod 43 being fixed between them.
  • a drive motor 41 is provided above the gear 42, so that it is possible to set the drive rod 43 in rotation, so that, via the engagement with the drive sleeve 16, the conveyor belts 11, 12, depending on the direction of rotation of the motor 41 and thus the drive rod 43, can be moved back and forth over the support belt 2.
  • the device is monitored by a control unit 3.
  • the fuse switch-off of two limit switches 46, 47 which are provided on the support surface 45 on each side of the support band 2 and each determine the maximum end position of the pendulum 1. An alarm can be given or an emergency stop can be triggered if the pendulum moves beyond these maximum end positions.
  • the pairs of rollers 17, 18 serve as sensors so that, for example, a signal is given when the pair of rollers 17 touches the limit switch 46 and thus closes, or else the pair of rollers 18 cooperates with the limit switch 47 in the same way.
  • the contact between limit switch 46 and roller pair 17 can also trigger an alarm, while the emergency stop is only triggered when roller pair 18 comes into contact with this limit switch 46.
  • a corresponding control can be provided in connection with the limit switch 47.
  • Such and other control programs can be entered into the control unit 3 via a programming device which is connected to the control unit 3 via a data line 50.
  • the control unit 3 receives further information from a reference switch 21, which is assigned to the support belt 2.
  • This reference switch 21 sets the zero point of the support tape 2 fixed.
  • the contact point of the reference switch 21 is in turn located on the support surface 45 and can be closed via a contact provided on the slide 15, which can also exist in one of the two pairs of rollers 17, 18.
  • a frequency converter 30 receives information about the speed of the drive motor 41 via a data line 31 and transmits this to the control unit 3 via a data line 32.
  • the speed of the drive motor 41 can in turn be influenced via the motor cable 32 via the same data line 33.
  • An operating device 29 is connected to a host computer 35 via a data line 38.
  • the pendulum width can be entered via the control unit, i.e. the desired width of the fleece plate to be produced. This is usually 1800 to 2200 mm.
  • the master computer calculates the value for the pendulum movement to the right and to the left and transfers this data to the control unit 3 via the data line 34.
  • the master computer 35 also triggers the start of the pendulum 1 and monitors the data transfer on the line 34 and the state of the Overall system.
  • an output area 36 is provided which gives data from the host computer to the control device 3, for example the command to start the pendulum 1, and an input area 37 which receives data from the control device, for example about the current value of the pendulum movement.
  • the operator can now generate a desired plate quality via the operating device 39.
  • the control unit 3 then operates the drive motor 41 in the required manner and simultaneously monitors the correct operation by information about its speed via the data line 31, the frequency converter 30 and the data line 33.
  • the drive motor 41 actuates the drive rod 43 in accordance with the signals received. which, via their engagement with the drive sleeve 16, guide the conveyor belts 11, 12 fastened to the carriage 15 over the support belt 2.
  • impregnated nonwoven material is processed which is thermally curable, it is generally necessary to provide an oven through which the material runs. It can be provided to pass the support belt itself through the furnace or to transfer the nonwoven material to a corresponding conveyor belt.
  • Fig. 2 shows a cross section through an oven to be used with the device according to the invention.
  • This has an elongated housing 60, in which an endless conveyor belt, hereinafter referred to as the upper conveyor belt 70, is accommodated.
  • the upper conveyor belt 70 is guided by means of deflection rollers fixed to the side walls of the housing 60.
  • the top wall 61 and the side walls 62, 63 are thermally insulated, a further thermal insulation is arranged below the upper run 71 of the upper conveyor belt 70 and closes it off from the rest of the housing space in the region of the upper run.
  • a lower conveyor belt 75 is provided running parallel to the upper conveyor belt 70, the upper run 76 of which is opposite the lower run 72 of the upper conveyor belt 70.
  • the lower conveyor belt 75 is likewise enclosed in a housing 65 and guided by means of deflection rollers, the bottom wall 66 and side walls 67, 68 of the housing in turn being thermally insulated and a further thermal insulation 69 being provided above the lower run 77 of the conveyor belt 75. Both conveyor belts 70, 75 can be heated.
  • the lower housing 65 is displaceable in the vertical direction with respect to the upper housing 60, which is brought about by hydraulic devices 80, 81 which are fixed to the side walls 63, 68 and 62, 67, respectively. These hydraulic devices 80, 81 can be operated independently of one another.
  • the fleece to be cured is fed to the oven in such a way that it is guided between the upper side of the upper run 76 of the lower conveyor belt 75 and the lower side of the lower run 72 of the upper conveyor belt 70 and is heated at the same time.
  • the distance between the runs 72, 76 can be adjusted by appropriately controlling the hydraulic devices 80, 81, this adjustment also being able to be carried out in accordance with control signals which are predetermined by the desired profile of the plate.
  • the heating effect of the furnace is thus optimally adapted to the profile of the plates.

Abstract

In a device for feeding a non-woven web, particularly a mineral-wool web, onto a receiving conveyor, with a feed conveyor for the non-woven web, and with two conveyor belts which are suspended in a pendulum-like manner and are arranged essentially parallel to one another and between which the non-woven web is transported and which oscillate between two reversal points in a plane perpendicular to the receiving conveyor and perpendicular to the direction of movement of the receiving conveyor, the speed of the receiving conveyor being lower than the discharge speed of the non-woven web, so that the latter comes to rest on the receiving conveyor in at least partially overlapping layers, there is provided for the conveyor belts a linear drive which moves the conveyor belts to and fro at variable speed between reversal points which can be fixed variably. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Aufbringen von Vlies, insbesondere Mineralwollevlies, auf ein Auflageband, mit einem Zufuhrband für das Vlies, mit zwei pendelartig aufgehängten, im wesentlichen parallel zueinander angeordneten Förderbändern, zwischen denen das Vlies transportiert wird und welche in einer Ebene senkrecht zum Auflageband und senkrecht zur Bewegungsrichtung des Auflagebandes zwischen zwei Umkehrpunkten schwingen, wobei die Geschwindigkeit des Auflagebandes geringer ist als die Ausgabegeschwindigkeit des Vlieses, so daß dieses in wenigstens teilweise überlappenden Schichten auf dem Auflageband zu liegen kommt.The invention relates to a device for applying fleece, in particular mineral wool fleece, to a support belt, with a feed belt for the fleece, with two pendulum-like, essentially parallel conveyor belts between which the fleece is transported and which is in a plane perpendicular to the support belt and swing perpendicular to the direction of movement of the support belt between two reversal points, the speed of the support belt being lower than the dispensing speed of the fleece, so that it comes to rest on the support belt in at least partially overlapping layers.

Bei derartigen Vorrichtungen, auch Pendelmechanismen oder einfach Pendel genannt, besteht stets das Problem, das Vlies möglichst homogen auf das Auflageband aufzubringen.In such devices, also called pendulum mechanisms or simply pendulums, there is always the problem of applying the fleece as homogeneously as possible to the support belt.

Es ist kennzeichnend für eine Pendelbewegung, daß die Geschwindigkeit des Pendels im Bereich der Umkehrpunkte sehr gering ist, während sie ein Maximum zwischen den Umkehrpunkten annimmt. Das Vlies wird hingegen immer mit konstanter Geschwindigkeit zwischen den Förderbändern ausgetragen, so daß eine ungleichmäßige Schichtdicke des auf das Auflageband aufgebrachten Vlieses, auch sekundäres Vlies genannt, quer zur Bewegungsrichtung des Auflagebandes die Folge ist.It is characteristic of a pendulum movement that the speed of the pendulum is very low in the area of the reversal points, while it assumes a maximum between the reversal points. The fleece, on the other hand, is always discharged at a constant speed between the conveyor belts, so that an uneven layer thickness of the fleece applied to the support belt, also called secondary fleece, transversely to the direction of movement of the support belt is the result.

Um ein homogenes sekundäres Vlies herstellen zu können, wird gemäß der WO 88/3121 vorgeschlagen, die Förderbänder über einen Kopplungsmechanismus in Form einer starren Stange auf eine Trajektorie zu zwingen, die je nach Stellung des Pendels so für eine Verzögerung oder Beschleunigung sorgt, daß die Unterschiede in der Geschwindigkeit weitestgehend ausgeglichen werden. Die die Bewegung erzwingende Einrichtung bewegt die starre, mit einem Ende mit den Förderbändern verbundene Stange an ihrem anderen Ende auf Führung geradlinig hin und her.In order to be able to produce a homogeneous secondary fleece, it is proposed according to WO 88/3121 to force the conveyor belts via a coupling mechanism in the form of a rigid rod onto a trajectory, which, depending on the position of the pendulum, provides for a deceleration or acceleration that the Differences in speed can be largely compensated for. The movement-forcing device moves the rigid rod, which is connected at one end to the conveyor belts, at its other end in a straight line to and fro.

Es sind auch andere Kopplungsmechanismen bekannt, bei denen der geführte Weg aus einem Kreis oder einer Ellipse besteht.Other coupling mechanisms are also known in which the guided path consists of a circle or an ellipse.

Allen diesen bekannten Vorrichtungen ist es gemeinsam, daß mit ihnen sekundäre Vliese und damit Vliesplatten hergestellt werden können, die eine gleichbleibende Qualität während des gesamten Herstellungsprozesses haben.It is common to all these known devices that secondary fleeces and thus fleece plates can be produced with them, which have a constant quality during the entire manufacturing process.

Manchmal kann es jedoch erforderlich sein, während des Betriebes unterschiedliche Breiten für das Vliesplattenmaterial zu erhalten. Ferner kann die Anforderung bestehen, eine bestimmte Rohdichteverteilung in Querrichtung, auszubilden. Dieses ist bisher nicht möglich gewesen, da durch den starren Kopplungsmechanismus die Bewegungsbedingungen für das Pendel weitgehend festgelegt sind.However, sometimes it may be necessary to obtain different widths for the nonwoven sheet material during operation. There may also be a requirement to form a specific bulk density distribution in the transverse direction. So far this has not been possible since the rigid coupling mechanism largely defines the movement conditions for the pendulum.

Aus der FR-A-2 117 703 ist es bekannt, ein Primärvlies in ein Sekundärvlies zu überführen, wobei ein dünnes Primärvlies zwischen zwei vertikal angeordnete Transportbänder eingebracht wird. Diese Transportbänder sind an einem Pendelrahmen befestigt, dessen Pendelachse gleichgerichtet mit der Achse eines Zuführbandes für das Sekundärvlies ist. Mit dem unteren Ende greift der Pendelrahmen über einen Zapfen in einen Vertikalschlitz eines horizontal beweglichen Schlittens ein, der zwei Kompaktierungsrollen umfaßt, über die das Primärvlies schuppenartig auf einem Auflageband zum Sekundärvlies abgelegt wird.From FR-A-2 117 703 it is known to convert a primary fleece into a secondary fleece, a thin primary fleece being introduced between two vertically arranged conveyor belts. These conveyor belts are attached to a pendulum frame, the pendulum axis of which is aligned with the axis of a feed belt for the secondary fleece. With the lower end, the pendulum frame engages via a pin in a vertical slot of a horizontally movable slide, which comprises two compacting rollers, by means of which the primary fleece is deposited in a scale-like manner on a support belt for the secondary fleece.

Es ist deshalb das der Erfindung zugrundeliegende Problem, eine Vorrichtung zum Aufbringen von Vlies auf ein Auflageband zu schaffen, bei dem die Möglichkeit besteht, die Vliesplattenqualitäten auch während des Betriebs variabel einzustellen.It is therefore the problem underlying the invention to create a device for applying nonwoven to a support belt, in which there is the possibility of variably adjusting the quality of the nonwoven sheet even during operation.

Dieses Problem wird von einer Vorrichtung der eingangs genannten Gattung mit den Merkmalen des Kennzeichens von Patentanspruch 1 gelöst. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.This problem is solved by a device of the type mentioned at the beginning with the features of the characterizing part of patent claim 1. Advantageous refinements are the subject of the dependent claims.

Erfindungsgemäß ist für die Förderbänder ein Linearantrieb vorgesehen, welcher die Förderbänder zwischen den variabel festlegbaren Umkehrpunkten mit veränderbarer Geschwindigkeit hin- und herbewegen kann. Der Linearantrieb kann dabei so gesteuert werden, daß, wenn die Breite des herzustellenden sekundären Vlieses bzw. der Vliesplatte festgelegt ist, diese Information in die Pendelbewegung umgesetzt wird. Auch ist es möglich, die Geschwindigkeit so zu variieren, daß beispielsweise in einem Bereich des Auflagebandes die Förderbänder ständig mit geringer Geschwindigkeit über dieses geführt werden, in einem benachbarten Bereich daher mit höherer Geschwindigkeit. Damit kann eine Vliesplatte erzeugt werden, die quer zur Bewegungsrichtung des Auflagebandes zunächst eine größere, dann eine geringere Dichte aufweist. Auch in Bewegungsrichtung des Auflagebandes sind unterschiedliche Profilierungen möglich, wenn die Geschwindigkeit der Pendelbewegung zwischen den Umkehrpunkten entsprechend eingestellt wird. Grundsätzlich gilt, daß die Vliesplatte eine umso größere Schichtdicke aufweist, je langsamer die Geschwindigkeit des Antriebes und somit der Pendelbewegung in dem entsprechenden Bereich ist.According to the invention, a linear drive is provided for the conveyor belts, which can move the conveyor belts back and forth between the variably definable reversal points with variable speed. The linear drive can be controlled so that when the width of the secondary fleece to be produced or the fleece plate is fixed, this information is converted into the pendulum movement. It is also possible to vary the speed so that, for example, in one area of the support belt, the conveyor belts are continuously guided over it at a low speed, and therefore in a neighboring area at higher speed. In this way, a nonwoven plate can be produced which initially has a greater, then a lower, density transversely to the direction of movement of the support belt. Different profiles are also possible in the direction of movement of the support belt if the speed of the pendulum movement between the reversal points is set accordingly. Basically, the fleece plate has a greater layer thickness, the slower the speed of the drive and thus the pendulum movement in the corresponding area.

Vorteilhaft kann zu beiden Seiten des Auflagebandes je ein Endschalter angeordnet sein, welcher die maximale Auslenkung der Förderbänder bestimmt. Diese stellen eine Notfallschaltung dar, die verhindert, daß Material über das eigentliche Auflageband hinaus aufgelegt wird.A limit switch, which determines the maximum deflection of the conveyor belts, can advantageously be arranged on each side of the support belt. These represent an emergency circuit that prevents material from being placed beyond the actual support belt.

Es ist bevorzugt, als Linearantrieb einen doppelseitigen Zahnriemen zu verwenden, der senkrecht zur Bewegungsrichtung des Auflagebandes über diesem angeordnet ist, wobei die Förderbänder an einem gemeinsamen Schlitten festgelegt sind, welcher mit dem Antrieb in Eingriff ist. Damit wird die Bewegung der Förderbänder in genau einer definierten Ebene eingehalten.It is preferred to use a double-sided toothed belt as a linear drive, which is arranged perpendicular to the direction of movement of the support belt, the conveyor belts being fixed to a common carriage which is in engagement with the drive. This means that the movement of the conveyor belts is maintained at exactly one defined level.

Weiter kann vorteilhaft der Schlitten an seiner Unterseite mit wenigstens einer Rolle versehen sein, welche den Kontakt zu mindestens einem der Endschalter schließt.Furthermore, the carriage can advantageously be provided on its underside with at least one roller, which closes contact with at least one of the limit switches.

Sollen imprägnierte, thermisch auszuhärtende Vliese verarbeitet werden, ist es besonders bevorzugt, einen im wesentlichen über dem Auflageband angeordneten Ofen mit je einer Höhenverstellung auf jeder Seite des Auflagebandes vorzusehen, welche unabhängig voneinander justierbar sind. Der Ofen kann damit unmittelbar an das Profil der Vliesplatte angepaßt werden und so für eine optimale Durchhärtung sorgen.If impregnated, thermally hardened nonwovens are to be processed, it is particularly preferred to provide an oven which is arranged essentially above the support belt and has a height adjustment on each side of the support belt, which can be adjusted independently of one another. The oven can thus be adapted directly to the profile of the non-woven sheet and thus ensure optimal curing.

Im folgenden soll die Erfindung beispielhaft anhand der beigefügten Zeichnung näher beschrieben werden.The invention will be described in more detail below by way of example with reference to the accompanying drawing.

Es zeigt:

Fig. 1
eine schematische Darstellung der erfindungsgemäßen Vorrichtung mit der zugehörigen Steuerung; und
Fig. 2
einen Ofen zum Aushärten, der vorteilhaft bei der erfindungsgemäßen Vorrichtung einsetzbar ist.
It shows:
Fig. 1
a schematic representation of the device according to the invention with the associated control; and
Fig. 2
a curing oven, which can be used advantageously in the device according to the invention.

Ein Pendel 1 besteht aus einem im wesentlichen horizontal angeordneten Zufuhrband 10 für Vliesmaterial, das dieses zu zwei Förderbändern 11, 12 transportiert, welche im wesentlichen parallel zueinander angeordnet sind und zwischen sich das ihnen zugeführte Vlies transportieren. Die Förderbänder 11, 12 sind so aufgehängt, daß eine pendelartige Bewegung ermöglicht ist, welche so koordiniert ist, daß immer eine gleichmäßige Förderung von Vlies erfolgt.A pendulum 1 consists of an essentially horizontally arranged feed belt 10 for nonwoven material, which transports it to two conveyor belts 11, 12, which are arranged essentially parallel to one another and transport the fleece fed to them between them. The conveyor belts 11, 12 are suspended in such a way that a pendulum-like movement is possible, which is coordinated in such a way that there is always a uniform conveying of nonwoven.

Die Ausgabeenden 13, 14, der Förderbänder 11, 12 befinden sich oberhalb eines Auflagebandes 2, das sich mit im wesentlichen konstanter Geschwindigkeit senkrecht zur Pendelebene des Pendels 1 bewegt. Die Förderbändern 11, 12 sind in ihrem unteren Bereich, aber oberhalb der Ausgabeenden 13, 14 an einem Schlitten 15 gemeinsam festgelegt. Dieser Schlitten 15 ist mit einer Antriebshülse 16 versehen, welche mit zwei zu einem Linearantrieb 4 gehörenden Zahnriemen 43 in Eingriff ist. Die Zahnriemen 43 sind ebenfalls in der Pendelebene angeordnet, also senkrecht zur Bewegungsrichtung des Auflagebandes 2.The output ends 13, 14, of the conveyor belts 11, 12 are located above a support belt 2, which moves perpendicular to the pendulum plane of the pendulum 1 at a substantially constant speed. The conveyor belts 11, 12 are fixed together on a carriage 15 in their lower region, but above the discharge ends 13, 14. This carriage 15 is provided with a drive sleeve 16 which engages with two toothed belts 43 belonging to a linear drive 4. The toothed belts 43 are also arranged in the pendulum plane, that is to say perpendicular to the direction of movement of the support belt 2.

Weiterhin weist der Schlitten zwei Rollenpaare 17, 18 jeweils an seinem vorderen und rückwärtigen Ende auf, die auf einer Auflagefläche 45 aufliegen. Diese Auflagefläche 45 trägt gleichzeitig ein Lager 44 sowie ein Getriebe 42, wobei zwischen diesen die Antriebsstange 43 festgelegt ist.Furthermore, the carriage has two pairs of rollers 17, 18 at its front and rear ends, which rest on a support surface 45. This support surface 45 simultaneously supports a bearing 44 and a gear 42, the drive rod 43 being fixed between them.

Ein Antriebsmotor 41 ist oberhalb des Getriebes 42 vorgesehen, so daß es möglich ist, die Antriebsstange 43 in Rotation zu versetzen, wodurch über den Eingriff mit der Antriebshülse 16 die Förderbänder 11, 12, je nach Drehrichtung des Motors 41 und damit der Antriebsstange 43, über dem Auflageband 2 hin- und herbewegt werden können.A drive motor 41 is provided above the gear 42, so that it is possible to set the drive rod 43 in rotation, so that, via the engagement with the drive sleeve 16, the conveyor belts 11, 12, depending on the direction of rotation of the motor 41 and thus the drive rod 43, can be moved back and forth over the support belt 2.

Die Vorrichtung wird von einem Steuergerät 3 überwacht. Die Sicherungsabschaltung von zwei Endschaltern 46, 47, die an der Auflagefläche 45 an jeder Seite des Auflagebandes 2 vorgesehen sind und jeweils die maximale Endlage des Pendels 1 bestimmen, vorgenommen. Es kann Alarm gegeben oder ein Notstopp ausgelöst werden, wenn das Pendel über diese maximalen Endlagen hinausgerät. Als Sensoren dienen dabei die Rollenpaare 17, 18, so daß beispielsweise ein Signal gegeben wird, wenn das Rollenpaar 17 den Endschalter 46 berührt und damit schließt, oder aber das Rollenpaar 18 auf dieselbe Weise mit dem Endschalter 47 zusammenwirkt. Je nach Steuerung kann auch der Kontakt zwischen Endschalter 46 und Rollenpaar 17 einen Alarm auslösen, während der Notstopp erst bei dem Kontakt des Rollenpaares 18 mit diesem Endschalter 46 ausgelöst wird. Eine entsprechende Steuerung kann im Zusammenhang mit dem Endschalter 47 vorgesehen sein.The device is monitored by a control unit 3. The fuse switch-off of two limit switches 46, 47, which are provided on the support surface 45 on each side of the support band 2 and each determine the maximum end position of the pendulum 1. An alarm can be given or an emergency stop can be triggered if the pendulum moves beyond these maximum end positions. The pairs of rollers 17, 18 serve as sensors so that, for example, a signal is given when the pair of rollers 17 touches the limit switch 46 and thus closes, or else the pair of rollers 18 cooperates with the limit switch 47 in the same way. Depending on the control system, the contact between limit switch 46 and roller pair 17 can also trigger an alarm, while the emergency stop is only triggered when roller pair 18 comes into contact with this limit switch 46. A corresponding control can be provided in connection with the limit switch 47.

Solche und andere Steuerprogramme können dem Steuergerät 3 über ein Programmiergerät eingegeben werden, das über eine Datenleitung 50 mit dem Steuergerät 3 verbunden ist. Weitere Information erhält das Steuergerät 3 von einem Referenzschalter 21, welcher dem Auflageband 2 zugeordnet ist. Dieser Referenzschalter 21 legt dabei den Nullpunkt des Auflagebandes 2 fest. Die Kontaktstelle des Referenzschalters 21 befindet sich wiederum an der Auflagefläche 45 und kann über einen entsprechend am Schlitten 15 vorgesehenen Kontakt, der auch in einem der beiden Rollenpaare 17, 18 bestehen kann, geschlossen werden. Ein Frequenzumformer 30 nimmt über eine Datenleitung 31 Informationen über die Geschwindigkeit des Antriebsmotors 41 auf und gibt diese über eine Datenleitung 32 zum Steuergerät 3. Über dieselbe Datenleitung 33 kann wiederum die Drehzahl des Antriebsmotors 41 über das Motorkabel 32 beeinflußt werden.Such and other control programs can be entered into the control unit 3 via a programming device which is connected to the control unit 3 via a data line 50. The control unit 3 receives further information from a reference switch 21, which is assigned to the support belt 2. This reference switch 21 sets the zero point of the support tape 2 fixed. The contact point of the reference switch 21 is in turn located on the support surface 45 and can be closed via a contact provided on the slide 15, which can also exist in one of the two pairs of rollers 17, 18. A frequency converter 30 receives information about the speed of the drive motor 41 via a data line 31 and transmits this to the control unit 3 via a data line 32. The speed of the drive motor 41 can in turn be influenced via the motor cable 32 via the same data line 33.

Ein Bediengerät 29 ist mit einem Leitrechner 35 über eine Datenleitung 38 verbunden. Über das Bediengerät kann die Pendelbreite eingegeben werden, das heißt die gewünschte Breite der herzustellenden Vliesplatte. Diese beträgt üblicherweise 1800 bis 2200 mm. Der Leitrechner berechnet daraus den Wert für die Pendelbewegung nach rechts und nach links und übergibt diese Daten über die Datenleitung 34 an das Steuergerät 3. Der Leitrechner 35 löst auch das Starten des Pendel 1 aus und überwacht den Datentransfer auf der Leitung 34 sowie den Zustand des Gesamtsystems. Für die Datenverwaltung ist ein Ausgabebereich 36 vorgesehen, der Daten vom Leitrechner an das Steuergerät 3 gibt, beispielsweise den Befehl zum Starten des Pendels 1, sowie ein Eingabebereich 37, der Daten von dem Steuergerät empfängt, beispielsweise über den aktuellen Wert der Pendelbewegung.An operating device 29 is connected to a host computer 35 via a data line 38. The pendulum width can be entered via the control unit, i.e. the desired width of the fleece plate to be produced. This is usually 1800 to 2200 mm. The master computer calculates the value for the pendulum movement to the right and to the left and transfers this data to the control unit 3 via the data line 34. The master computer 35 also triggers the start of the pendulum 1 and monitors the data transfer on the line 34 and the state of the Overall system. For data management, an output area 36 is provided which gives data from the host computer to the control device 3, for example the command to start the pendulum 1, and an input area 37 which receives data from the control device, for example about the current value of the pendulum movement.

Über das Bediengerät 39 kann der Bediener nun eine gewünschte Plattenqualität erzeugen. Neben der schon erwähnten Einstellung der Pendelbreite ist es möglich, ein Profil in Quer- und/oder Längsrichtung des Ausgabebandes vorzugeben, aus dem der Leitrechner 35 das erforderliche Geschwindigkeitsprofil für den Antriebsmotor 41 bestimmt und die Daten an das Steuergerät 3 weitergibt. Das Steuergerät 3 betreibt dann den Antriebsmotor 41 in der erforderlichen Weise und überwacht den korrekten Betrieb gleichzeitig durch Informationen über dessen Geschwindigkeit über die Datenleitung 31, den Frequenzumformer 30 sowie die Datenleitung 33. Der Antriebsmotor 41 betätigt in Übereinstimmung mit den erhaltenen Signalen die Antriebsstange 43, welche über ihren Eingriff mit der Antriebshülse 16 die am Schlitten 15 befestigtigten Förderbänder 11, 12 über das Auflageband 2 führen.The operator can now generate a desired plate quality via the operating device 39. In addition to the setting of the pendulum width already mentioned, it is possible to specify a profile in the transverse and / or longitudinal direction of the output belt, from which the host computer 35 does the necessary Determines the speed profile for the drive motor 41 and forwards the data to the control unit 3. The control unit 3 then operates the drive motor 41 in the required manner and simultaneously monitors the correct operation by information about its speed via the data line 31, the frequency converter 30 and the data line 33. The drive motor 41 actuates the drive rod 43 in accordance with the signals received. which, via their engagement with the drive sleeve 16, guide the conveyor belts 11, 12 fastened to the carriage 15 over the support belt 2.

Wird imprägniertes Vliesmaterial verarbeitet, welches thermisch aushärtbar ist, ist es im allgemeinen erforderlich, einen Ofen vorzusehen, durch den das Material läuft. Dabei kann vorgesehen sein, das Auflageband selbst durch den Ofen zu führen oder aber das Vliesmaterial einem entsprechenden Transportband zu übergeben.If impregnated nonwoven material is processed which is thermally curable, it is generally necessary to provide an oven through which the material runs. It can be provided to pass the support belt itself through the furnace or to transfer the nonwoven material to a corresponding conveyor belt.

Fig. 2 zeigt einen Querschnitt durch einen Ofen, der mit der erfindungsgemäßen Vorrichtung zu verwenden ist. Dieser weist ein langgestrecktes Gehäuse 60 auf, in welchem ein Endlostransportband, im folgenden als oberes Transportband 70 bezeichnet, untergebracht ist. Das obere Transportband 70 ist mittels an den Seitenwänden des Gehäuses 60 festgelegter Umlenkrollen geführt. Die Deckenwand 61 sowie die Seitenwände 62, 63 sind wärmegedämmt, eine weitere Wärmedämmung ist unterhalb des Obertrums 71 des oberen Transportbandes 70 angeordnet und schließt dieses im Bereich des Obertrums vom übrigen Gehäuseraum ab. Parallel zum oberen Transportband 70 verlaufend ist ein unteres Transportband 75 vorgesehen, wobei dessen Obertrum 76 dem Untertrum 72 des oberen Transportbandes 70 gegenübersteht.Fig. 2 shows a cross section through an oven to be used with the device according to the invention. This has an elongated housing 60, in which an endless conveyor belt, hereinafter referred to as the upper conveyor belt 70, is accommodated. The upper conveyor belt 70 is guided by means of deflection rollers fixed to the side walls of the housing 60. The top wall 61 and the side walls 62, 63 are thermally insulated, a further thermal insulation is arranged below the upper run 71 of the upper conveyor belt 70 and closes it off from the rest of the housing space in the region of the upper run. A lower conveyor belt 75 is provided running parallel to the upper conveyor belt 70, the upper run 76 of which is opposite the lower run 72 of the upper conveyor belt 70.

Das untere Transportband 75 ist ebenfalls in einem Gehäuse 65 eingeschlossen und mittels Umlenkrollen geführt, wobei Bodenwand 66 und Seitenwände 67, 68 des Gehäuses wiederum wärmegedämmt sind und eine weitere Wärmedämmung 69 oberhalb des Untertrums 77 des Transportbandes 75 vorgesehen ist. Beide Transportbänder 70, 75 sind beheizbar. Das untere Gehäuse 65 ist in bezug auf das obere Gehäuse 60 in vertikaler Richtung verlagerbar, was durch Hydraulikvorrichtungen 80, 81 bewirkt wird, die an den Seitenwänden 63, 68 bzw. 62, 67 festgelegt sind. Diese Hydraulikvorrichtungen 80, 81 sind unabhängig voneinander betreibbar.The lower conveyor belt 75 is likewise enclosed in a housing 65 and guided by means of deflection rollers, the bottom wall 66 and side walls 67, 68 of the housing in turn being thermally insulated and a further thermal insulation 69 being provided above the lower run 77 of the conveyor belt 75. Both conveyor belts 70, 75 can be heated. The lower housing 65 is displaceable in the vertical direction with respect to the upper housing 60, which is brought about by hydraulic devices 80, 81 which are fixed to the side walls 63, 68 and 62, 67, respectively. These hydraulic devices 80, 81 can be operated independently of one another.

In der Fig. 2 sind nur zwei dieser Hydraulikvorrichtungen 80, 81 dargestellt. Es wird aber erforderlich sein, über die Länge des Ofens eine Vielzahl derartiger Hydraulikvorrichtungen, bevorzugt aber nicht notwendig auf beiden Seiten des Ofens gegenüberliegend angeordnet, vorzusehen, um eine Höhenanpassung über die gesamte Länge des Ofens vornehmen zu können.2 only two of these hydraulic devices 80, 81 are shown. However, it will be necessary to provide a plurality of such hydraulic devices over the length of the furnace, preferably but not necessarily arranged opposite one another on both sides of the furnace, in order to be able to adjust the height over the entire length of the furnace.

Das auszuhärtende Vlies wird dem Ofen so zugeführt, daß es zwischen der Oberseite des Obertrums 76 des unteren Transportbandes 75 sowie der Unterseite des Untertrums 72 des oberen Transportbandes 70 von diesen geführt und dabei gleichzeitig beheizt wird. Durch entsprechende Steuerung der Hydraulikvorrichtungen 80, 81 kann der Abstand zwischen den Trums 72, 76 justiert werden, wobei diese Justierung auch in Übereinstimmung mit Steuersignalen vorgenommen werden kann, die durch das gewünschte Profil der Platte vorgegeben sind. Die Heizwirkung des Ofens wird damit optimal an das Profil der Platten angepaßt.The fleece to be cured is fed to the oven in such a way that it is guided between the upper side of the upper run 76 of the lower conveyor belt 75 and the lower side of the lower run 72 of the upper conveyor belt 70 and is heated at the same time. The distance between the runs 72, 76 can be adjusted by appropriately controlling the hydraulic devices 80, 81, this adjustment also being able to be carried out in accordance with control signals which are predetermined by the desired profile of the plate. The heating effect of the furnace is thus optimally adapted to the profile of the plates.

Damit wird gewährleistet, daß Vliesplatten gewünschter Profilierung, beispielsweise Gefälleplatten, mit gleicher Rohdichteverteilung in der Linie ohne Dickenschnitt oder mit unterschiedlicher Rohdichteverteilung über die Produktionsbreite, in bester Qualität, erhalten werden.This ensures that non-woven panels of the desired profile, for example sloping panels, with the same Bulk density distribution in the line without thickness cut or with different bulk density distribution across the production range, in the best quality.

Claims (5)

  1. A device for feeding a non-woven web, particularly a mineral wool web, onto a receiving conveyor, having a feeding conveyor for the non-woven web, having two pendulum-like suspended conveyors arranged substantially parallel with each other, between which the non-woven web is conveyed, and which swing between two reversal points in a plane perpendicular to the receiving conveyor and perpendicular to the moving direction of the receiving conveyor, the speed of the receiving conveyor being less than the feeding speed of the non-woven web for this getting to lie in at least partially overlapping layers on the receiving conveyor, characterized in that a linear driving mechanism (4) is provided for the conveyors (11, 12), which reciprocates the conveyors (11, 12) with changeable speed between two variably fixable reversal points, and the pendulum axis for the conveyors (11, 12) runs perpendicular to the rotation axis of the receiving conveyor (2).
  2. A device according to claim 1, characterized in that a limit switch (46, 47) is located on each side of the receiving conveyor (2), which defines the maximum excursion of the conveyors (11, 12).
  3. A device according to claim 1 or 2, characterized in that two driving toothed belts (43) are provided in the linear driving mechanism (4), which are engaged in a slide (15) to which the conveyors (11, 12) together are fixed.
  4. A device according to anyone of claims 1 to 3, characterized in that at least a roller (17, 18) is provided at the lower surface of the slide (15), which is capable to close the contact with at least one of the limit switches (46, 47).
  5. A device according to anyone of the preceding claims for impregnated thermosetting non-woven webs, characterized in that an oven located substantially over the receiving conveyor (2) is provided, having a height adjustment on each side of the oven, which are adjustable independently.
EP92113741A 1991-08-16 1992-08-12 Device for feeding a non-woven web, particularly a mineral wool web, onto a receiving conveyor Expired - Lifetime EP0528348B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4127172 1991-08-16
DE4127172A DE4127172C2 (en) 1991-08-16 1991-08-16 Device for applying fleece, in particular mineral wool fleece, to a support belt

Publications (2)

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EP0528348A1 EP0528348A1 (en) 1993-02-24
EP0528348B1 true EP0528348B1 (en) 1995-11-15

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EP (1) EP0528348B1 (en)
JP (1) JPH05195331A (en)
AT (1) ATE130384T1 (en)
CZ (1) CZ281375B6 (en)
DE (3) DE9116541U1 (en)
DK (1) DK0528348T3 (en)
FI (1) FI105487B (en)
HR (1) HRP920267B1 (en)
SI (1) SI9200173B (en)
SK (1) SK278922B6 (en)

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FR2770855B1 (en) * 1997-11-07 2000-01-28 Asselin METHOD AND DEVICE FOR PRODUCING A TEXTILE TABLECLOTH
DE10013644A1 (en) * 2000-03-18 2001-09-27 Oesterr Heraklith Gmbh Method and device for producing a mineral fiber mat
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DE10338001C5 (en) * 2003-08-19 2013-06-27 Knauf Insulation Gmbh Method for producing an insulating element and insulating element
DE102004011690A1 (en) * 2004-03-10 2005-09-29 Saint-Gobain Isover G+H Ag Oscillating drive for depositing mineral fibers on conveyor involves a stationary gear ring with an inner gear of half the diameter running round within it
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CN108729028A (en) * 2018-05-30 2018-11-02 广东知识城运营服务有限公司 A kind of helix drum wire oscillator for spun-bonded hot rolling non-woven fabric equipment
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FI105487B (en) 2000-08-31
FI923550A0 (en) 1992-08-07
DE59204325D1 (en) 1995-12-21
JPH05195331A (en) 1993-08-03
DE4127172A1 (en) 1993-02-18
DK0528348T3 (en) 1996-03-18
CZ281375B6 (en) 1996-09-11
SK247692A3 (en) 1994-04-06
HRP920267B1 (en) 1998-04-30
DE4127172C2 (en) 1995-02-02
ATE130384T1 (en) 1995-12-15
DE9116541U1 (en) 1993-04-15
EP0528348A1 (en) 1993-02-24
HRP920267A2 (en) 1995-08-31
CZ247692A3 (en) 1993-02-17
SI9200173B (en) 1998-06-30
SK278922B6 (en) 1998-04-08
FI923550A (en) 1993-02-17
SI9200173A (en) 1993-03-31

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