EP3447175B1 - Nonwoven fabric layer and nonwoven fabric laying method - Google Patents

Nonwoven fabric layer and nonwoven fabric laying method Download PDF

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Publication number
EP3447175B1
EP3447175B1 EP18193837.4A EP18193837A EP3447175B1 EP 3447175 B1 EP3447175 B1 EP 3447175B1 EP 18193837 A EP18193837 A EP 18193837A EP 3447175 B1 EP3447175 B1 EP 3447175B1
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EP
European Patent Office
Prior art keywords
laying
belt
deflection
woven fabric
carriage
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EP18193837.4A
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German (de)
French (fr)
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EP3447175A1 (en
Inventor
Joachim BINNIG
Eberhard HÄBERLE
Steffen HARTUNG
Rudolf Kuhn
Andreas Meier
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Hi Tech Textile Holding GmbH
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Hi Tech Textile Holding GmbH
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Publication of EP3447175A1 publication Critical patent/EP3447175A1/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
    • D04H1/72—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 randomly arranged
    • D04H1/736—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 randomly arranged characterised by the apparatus for arranging fibres

Definitions

  • the invention relates to a fleece layer and a fleece laying method with the features in the preamble of the main claim of the method and device.
  • Such a fleece layer is from EP 1 828 453 B1 known. It is designed as a so-called tape layer and has two main carriages (upper carriage and laying carriage) as well as two laying tapes that are guided to the main carriage via pulleys.
  • the superstructure has a belt deflection for both laying belts.
  • One of the laying belts is designed as a feed belt to which a fiber web is transferred on the input side of the fleece layer.
  • the feed belt with the web of fibers lying on it is deflected at the belt deflection by 180 ° in the opposite direction over two rollers, a single straight band section of the laying belt being formed between the two rollers on the belt deflection.
  • the opposing band is also deflected at the band deflection, a single straight band section of the opposing band being formed.
  • These two straight band sections of the two laying bands are directed obliquely downwards and run parallel, with the pile being held and guided on both sides in the clamping connection between these two band sections.
  • the DE 295 18 587 U1 and the EP 1 136 600 A1 also show non-woven layers with such a belt deflection on the upper carriage with two deflection points for the feed belt with the pile on top.
  • the EP 1 367 166 A1 shows a fleece layer with two laying belts and a belt deflection on the upper carriage.
  • the pile is detached from the feeding tape at the tape deflection and guided and deflected separately over a single rotating and rear-sucked deflection roller, with the tape freed from the pile being deflected in a separate tape loop with a very large deflection angle at the separation point.
  • the non-generic JP S56-26011 A shows a crushing device with which a web is crushed by slipping between parallel conveyor belts and thereby roughened and thickened.
  • the conveyor belts are guided over stationary conveyor rollers.
  • the previously known fleece layers are limited in their performance, in particular in the possible passage speed of the pile. This is especially the case with very light and sensitive fiber webs.
  • the invention solves this problem with the features in the main claim of the method and device.
  • the belt deflection has three or more deflection points for the one laying belt or feed belt.
  • the laying belt or feed belt has at the three or more deflection points in each case a deflection angle ⁇ , ⁇ , ⁇ of less than 90 °.
  • the fleece layer with the claimed belt deflection and the fleece laying process have the advantage that the fiber web can be guided better and more gently and transported over the belt deflection. In addition, higher throughput speeds of the fiber web are possible than in the prior art.
  • first and second and possibly further straight band sections with a corresponding number of three or more deflection points on the band deflection has the advantage that the fiber web can be guided better at the critical points.
  • the three or more deflection points reduce the deflection angle compared to the prior art, which is also advantageous for guiding and holding the pile.
  • the ribbon and pile deflection can take place gradually and therefore more gently in several steps.
  • the last straight band section at the end of the band deflection can already have an inclination in the direction opposite to the feed direction, wherein in this band section the pile can be guided by the laying bands on both sides with a clamping connection.
  • the claimed fleece layer can be designed for very high belt and pile speeds. For this purpose, training as a co-rotating layer with a main carriage moving in the same direction is advantageous.
  • the pile can be fed from the upper carriage, the laying carriage on a direct and straight path without any further diversions and can be deposited by the laying carriage on a haul-off device.
  • the fleece layer can also have a tensioning device or tape length compensation device, which enables the main carriages and their kinematics to be decoupled. As a result, the weight per unit area of the laid fleece can be influenced and possibly changed via the laying width and / or the length of the fleece.
  • the fleece layer can have a buffer function to compensate for fluctuating infeed speeds of the batt.
  • the claimed fleece layer can have the following design features individually or in combination.
  • the deflection points on the belt deflection can be formed by deflection rollers.
  • the one laying belt or feed belt can have two or more straight belt sections with different orientations at the belt deflection.
  • the straight belt sections of the one laying belt or feed belt can be arranged between the deflection points, in particular between deflection rollers.
  • the first tape section in the feed direction of the one laying tape or feed belt can be directed obliquely downwards in the feed direction and the second or last tape section of the one laying tape or feed belt can be directed obliquely downwards counter to the feed direction.
  • the first deflection angle ⁇ and the last, in particular the third deflection angle ⁇ of the one laying belt or feed belt can each be greater than the mean, in particular the second deflection angle ⁇ .
  • the first deflection angle ⁇ can be between 55 ° and 70 °, preferably approximately 63 °.
  • the second deflection angle ⁇ can be between 40 ° and 55 °, preferably approximately 46 °.
  • the third and last deflection angle ⁇ can be between 65 ° and 75 °, preferably approximately 71 °.
  • the belt deflection for the other laying belt or counter belt can have three or more deflection rollers.
  • the other laying belt or counter-belt can have two or more straight belt sections with different orientations at the belt deflection.
  • the upper or first straight belt sections of both laying belts can have different orientations and run towards one another at an angle.
  • the second or last straight band sections of the two laying bands can be closely adjacent and oriented essentially in the same direction.
  • the second or last straight band sections of both laying bands can run parallel to one another or conically to one another at an acute angle.
  • the superstructure can have a pile guide with several sections at the belt deflection, in which the fiber pile is first guided on one side and then on both sides.
  • a first open guide section of the pile guide can be formed between the first straight tape sections of both laying tapes, the fiber pile being guided on one side on one laying tape or feed tape.
  • a subsequent closed guide section of the pile guide can be formed between the second or last straight tape sections of both laying tapes, the fiber pile being guided on both sides in the clamping connection.
  • the main carriages of the web layer can be arranged movably parallel to each other and independently driven and controlled.
  • the fleece layer can have controlled belt drives for the rotating drive of the laying belts.
  • the fleece layer can have a tensioning device, in particular with an auxiliary carriage arrangement, for the laying belts, which is coupled to the main carriage.
  • the laying belts can be guided in parallel in the area between the main carriages in a single straight section and clamp the batt (9) between them.
  • the fleece layer can have a controlled take-off device, in particular a take-off belt, for the deposited, multi-layer fleece formed from the batt.
  • the fleece layer can be connected downstream of a pile forming device, in particular a card or card.
  • the fleece layer can be connected upstream of a fleece bonding device, in particular a needle loom.
  • the invention relates to a fleece layer (1) and a fleece laying method.
  • the invention also relates to a fiber treatment plant with a fleece layer (1) and other plant components.
  • the fleece layer (1) is used to panel a fed fiber web (9) to form a multi-layer fleece (10).
  • the fleece layer (1) has for this purpose in the embodiment of Figure 1 two main carriages (2,3), namely a first main carriage or upper carriage (2) and a second main carriage or laying carriage (3), and two endless laying belts (6,7) each guided in a loop over both main carriages (2,3) on.
  • the fleece layer (1) also has a take-off device (8) directed transversely or obliquely to the movement path of the main carriages (2, 3) for receiving and transporting the multi-layer fleece (10).
  • the fleece layer (1) can have a tensioning device (4).
  • the two laying belts (6,7) which are guided in separate loop paths, come together on the upper carriage (2) from different directions, are guided there via a belt deflection (12) described below and emerge from the upper carriage (2) in a parallel position, with the Pick up the fiber pile (9) and on both sides lead in the clamp connection.
  • the fiber web (9) is transferred from this parallel band section directly in a straight path to the laying carriage (3).
  • the laying belts (6, 7) come apart again and are led away in opposite directions, the released fiber web (9) emerging down onto the take-off device (8) and being deposited there.
  • the laying carriage (7) performs reversing movements in the transverse direction to the take-off device (8), which carries out a forward movement, preferably coupled with the laying carriage movement, and transports away the fleece (10), which is peeled off in flaky form.
  • the main carriages (2, 3) are movably supported and guided parallel to one another by means of drives (31) on a rail guide in the frame of the fleece layer (1). They each have their own and independently controllable drive (not shown) for their travel movement. In the same-direction laying shown, the main carriages (2, 3) move in the same direction of travel, the upper carriage (2) having double paths and twice the speed compared to the laying carriage (3).
  • the travel movements of the main carriages (2,3) can be decoupled from one another, so that the loop length of the laying belts (6,7) running parallel between the main carriages (2,3) can be changed due to differences in movement, thereby forming a pile storage system.
  • the laying belts (6, 7) can also have independent drives that set them in a controlled circular movement. With such a configuration it is possible to influence the exit speed of the fiber web (9) on the laying carriage (3) and in particular to decouple it from the traveling speed of the laying carriage (3). In this way, the pile deposit on the take-off device (8) and the weight per unit area of the fleece (10) can be influenced and can be changed over the laying width of the laying carriage (3) moving back and forth.
  • the consolidated end product can have a desired basis weight distribution or error compensation for pile or consolidation errors can be operated.
  • the tensioning device (4) it is possible to compensate for speed fluctuations in the fed fiber web (9) and to develop a buffer effect.
  • the fleece layer (1) can be designed in different ways, for example according to the EP 1 828 453 B1 , or the DE 203 21 834 U1 or the EP 0 517 563 B2 .
  • the main difference to the previously known fleece layer is the design of the superstructure (2) and the belt deflection (12).
  • FIG 2 shows this belt deflection (12) in an enlarged detailed view.
  • the two laying belts (6,7) are fed to the upper carriage (2) and the belt deflector (12) on the upper side at an inlet point (32) separately from one another and from opposite directions.
  • One laying belt (6) forms the so-called feed belt, which attaches the fiber web (9) to the in Figure 1 the left input side (35) of the fleece layer (1) receives, carries and feeds to the upper carriage (2).
  • the pile guide can be one-sided and in an open position, with one or more pressure rollers possibly being present.
  • the other laying belt (7) is referred to below as the opposing belt.
  • Both laying belts (6, 7) are fed to the upper carriage (2) and the belt deflector (12) in an essentially horizontal orientation.
  • the feed belt (6) moves out of its feed direction at the belt deflection (12) (11) deflected in the opposite direction by approx. 180 ° downwards to an outlet point (33) on the superstructure.
  • both laying belts (6, 7) emerge in a closely spaced parallel position and, in a sandwich with the fiber pile (9), form a pile guide area (34) on both sides.
  • the upper run (13) and the lower run (14) of the feed belt (6) are aligned in parallel, the outlet height of the upper carriage (2) and the inlet height of the laying carriage (3) being the same. This results in a deflection angle of 180 °. If the said outlet and inlet heights are different, the lower run (14) can have an inclination to the horizontal so that the deflection angle can differ slightly from 180 °. An angular deviation can also occur for other reasons, e.g. when the upper run (13) is inclined.
  • the counter belt (7) is also deflected at the belt deflection, whereby the entry and exit direction of the counter belt (7) on the upper carriage (2) can be in the same direction and, in particular, be horizontal.
  • the belt deflection (12) causes a height offset of the opposing belt (7) between the inlet and outlet points (32, 33).
  • Both laying belts (6,7) entering at the top are deflected downwards at the belt deflection (12) and exit again at the upper carriage (2) in a lower position, which in the aforementioned manner is preferably the same height as the entry point on the laying carriage (3) Has.
  • the tape deflection (12) has three preferably rounded deflection points (15, 16, 17) for the so-called pile-guiding laying tape (6) carrying the fiber web (9).
  • the number of deflection points can alternatively also be greater, for example four.
  • the deflection points (15,16,17) are, for example, each of freely rotatable or possibly driven cylindrical pulleys formed, over the shell of which the feed belt (6) is guided. Alternatively, other deflection means are possible.
  • the three deflection points (15,16,17) or deflection rollers are arranged at a distance one above the other, the middle deflection point (16) being further forward in the feed direction (11) than the other two deflection points (15,17).
  • the first strip section (22) in the feed direction (11) is directed obliquely downwards in the feed direction (11).
  • the second band section (23) is directed obliquely downwards against the feed direction (11). If the belt deflector (12) has more than three deflection points for the feed belt (6), the belt section (23) is the last belt section before the outlet point (33) of the upper carriage (2).
  • the feed belt (6) each has a deflection angle ⁇ , ⁇ , ⁇ which is less than 90 °.
  • the angles ⁇ , ⁇ , ⁇ give the total deflection angle of e.g. 180 °.
  • the first deflection angle ⁇ at the first deflection point or deflection roller (15) and also the last, in particular third deflection angle ⁇ at the last or third deflection point (17), are each greater than the deflection angle ⁇ at the middle one Deflection point (16).
  • the first deflection angle ⁇ can be between 55 ° and 70 °, preferably approximately 63 °.
  • the second smaller deflection angle ⁇ can be between 40 ° and 55 °, preferably approximately 46 °.
  • the third and, for example, last deflection angle ⁇ can be between 65 ° and 75 ° and is preferably approximately 71 °.
  • the aforementioned deflection angles ⁇ , ⁇ , ⁇ can vary in size and assignment.
  • the first deflection point or deflection roller (15) on the upper carriage (2) can be shifted horizontally against the feed direction (11), with the two other deflection points or deflection rollers (16, 17) retaining their arrangement and design. This makes the first deflection angle ⁇ smaller and the second deflection angle ⁇ larger than in FIG Figure 2 , whereby their size ratio may also change, in particular vice versa.
  • the belt deflection (12) also has three or more deflection rollers (18 to 21) for the other counter belt (7).
  • three pulleys (18, 19, 20) are arranged one above the other at a distance.
  • the first deflection roller (18) lies in front of the middle deflection roller (19) and this again in front of the lower deflection roller (20).
  • a first straight belt section (24) is inserted between the first and the second or middle deflection roller (18, 19) and a second straight belt section (20) is inserted between the second or middle deflection roller (19) and the lower and / or third deflection roller (20). 25) formed.
  • These straight band sections (24, 25) also have different orientations.
  • a fourth deflection roller (21) is also provided next to the lower deflection roller (20), with which the counter belt (7) is deflected by more than 180 ° and then at the outlet (33) of the upper carriage (2) assumes a parallel and, for example, horizontal position to the feed belt (6) and its lower run (14).
  • a support roller (27) arranged below the deflection rollers (17, 20) supports the deflected counter-belt (7). It can be adjustable in order to adjust the belt height and the distance to the feed belt (6) and, if necessary, to adapt it to different pile thicknesses.
  • the counter belt (7) is arranged below and carries the fiber web (9), the feed belt (6) being arranged above and covering the fiber web (9) from above.
  • the fiber web (9) is fed to the upper run (2) and the belt deflector (12) lying on the upper run (13) of the feed belt (6) at the inlet point (32) above.
  • the fiber web (9) is also guided lying on one side on the feed belt (6).
  • the opposite, first straight belt section (24) of the counter belt (7) is far apart.
  • the first straight band sections (22,24) of both laying bands (6,7) have different orientations and run towards one another at an angle.
  • the second or last straight belt sections (23, 25) of both laying belts (6, 7) run closely adjacent and are essentially aligned in the same direction, their orientation having a directional component opposite to the feed direction (11).
  • the second or last straight ribbon cuts (23, 25) form a narrow gap between them, in which the fiber web (9) is received and, if necessary, guided on both sides with a clamp connection.
  • Said belt sections (23, 25) can run parallel to one another. For the purpose of pile compacting, they can also run conically towards one another at an acute angle and thereby create a gap that narrows in the direction of pile travel form. The shape and size of the gap can be adjusted and changed.
  • the deflection points or the relevant jacket areas of the deflection rollers (16, 19) of the laying belts (6, 7) can have different heights, with the deflection point of the counter belt (7) being somewhat higher, for example.
  • the deflection rollers (16, 19) can be arranged with their axes at the same height, the roller diameter of the deflection roller (16) being larger than that of the deflection roller (19).
  • the fiber web (9) already has the straight belt section (25) of the counter band (7) opposite.
  • the straight belt section (25) of the opposing belt (7) ends before the straight belt section (23) of the feed belt (6).
  • the lower deflecting rollers (17, 20) can have approximately the same diameter, the deflecting roller (20) of the counter-belt (7) being arranged with its axis somewhat above the axis of the deflecting roller (17).
  • the pulleys (17 to 21) of the two laying belts (6, 7) can have adjustable axes and can be adapted to different pile thicknesses or other pile properties.
  • the upper carriage (2) has a pile guide (28) with several, for example two, guide sections (29,30) on the belt deflection (12), in which the fiber pile (9) is guided first on one side and then on both sides.
  • a first open guide section (29) is formed between the first straight belt sections (22,24) of the laying belts (6,7), which run obliquely to one another in a funnel-like manner with a large opening angle of, for example, more than 10 °.
  • the fiber web (9) is guided here on one side on the feed belt (6). Due to the moderate deflection angle ⁇ does not lift the openly guided fiber web (9) from the feed belt (6) even at high running speeds.
  • the first open guide section (29) is followed by the second closed guide section (30) into which the fiber web (9) dips without a guide over an equally moderate deflection angle ⁇ .
  • the second guide section (30) forms a clamping section between the second straight band sections (23, 25), between which the fiber web (9) is guided on both sides in the clamping connection.
  • the clamping area (30) is directed towards the outlet point (33) and ends shortly before it.
  • the two-sided guidance is canceled again, with the possibly compacted and additionally stabilized fiber web (9) at the third deflection point (17) again being moderately deflected by the angle ⁇ under one-sided guidance on the feed belt (6) and then enters the guide area (34) on the outlet side (33) on both sides between the again brought together laying strips (6,7).
  • the fiber web (9) already has a directional component opposite to the feed direction (11) and in the direction of continuation to the laying carriage (3). Even at this deflection point (17), it does not detach from the load-bearing feed belt (6) despite being guided on one side. This is also the case at high running speeds and correspondingly high centrifugal forces.
  • One or more system components can be connected upstream of the fleece layer (1) on the input side (35).
  • This can, for example, be a pile forming device, in particular a card or card.
  • a stretching or compressing device, a pile storage device or other similar system components can be connected upstream.
  • the system components mentioned are not included shown.
  • One or more system components can also be connected downstream on the output side of the fleece layer (1) and the delivery point of the take-off device (8).
  • This can be a web bonding device, e.g. a single-stage or multi-stage needling machine, a hydroentanglement system, a thermal consolidation device or the like.
  • a compensating belt for buffering and compensating for fluctuating web delivery speeds can also be connected between the web layer (1) and the consolidation device, in particular a needle machine.
  • the number of deflection points (15, 16, 17) of the feed belt (6) can be greater than three and can e.g. be four or five, the number and orientation of the straight band sections (22,23) increasing accordingly.
  • the size and distribution of the deflection angles can also change.
  • the deflection points (18, 19, 20) of the counter-belt (7) can be adapted accordingly.
  • the pile guide (28) can also have a larger number of sections, it being possible to increase the number of open guide sections (29) and / or clamping sections (30).
  • the fleece layer (1) can for example be designed as a counter-rotating layer, in which the main carriages (2,3) move in opposite directions and the laying belts (6,7) running parallel in the guide area (34) between the two main carriages (2,3 ) are guided over a fixed deflection, eg a deflection roller.
  • the clamping device (4) can be omitted or designed in a different way, for example only has a single auxiliary or tensioning carriage.
  • the guide of the laying belts (6, 7) can be designed in a different way, with one or more additional support carriages being arranged, for example.
  • the counter belt (7) can be laid as far as the entry side of the fleece layer (1) and cover the fiber pile (9) on the feed belt (6).
  • Such modifications of the design of the web layer shown (1) can, for example, according to FIG EP 1 010 785 , the EP 1 010 786 or the EP 1 010 787 be trained.
  • the laying strips (6, 7) consist of high-tensile and flexurally elastic plastic sheets. They can alternatively consist of other materials and e.g. be designed as chain or slat belts. Variations are also possible with regard to the drive technology.
  • the main carriages (2, 3) can have a common drive for their travel movements and can be mechanically coupled to one another by a cable or the like.
  • the fleece layer (1) has a preferably programmable control (not shown) to which the various drives of the main carriages (2,3), the laying belts (6,7) and the take-off device (8) as well as any other components, e.g. a stretching device arranged in the inlet area.
  • This control can be connected to a higher-level system control or integrated into it.
  • a belt deflection (12) of the type shown with several deflection points for at least one laying belt (6, 7) can also be present at other points of a fleece layer (1) or compensating stacker, for example on the laying carriage (3) or on a stationary 180 ° belt deflection in the Frame of the fleece layer (1).

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  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Die Erfindung betrifft einen Vliesleger und ein Vlieslegeverfahren mit den Merkmalen im Oberbegriff des Verfahrens- und Vorrichtungshauptanspruchs.The invention relates to a fleece layer and a fleece laying method with the features in the preamble of the main claim of the method and device.

Ein solcher Vliesleger ist aus der EP 1 828 453 B1 bekannt. Er ist als sogenannter Bandleger ausgebildet und weist zwei Hauptwagen (Oberwagen und Legewagen) sowie zwei Legebänder auf, die über Umlenkrollen an den Hauptwagen geführt sind. Der Oberwagen besitzt eine Bandumlenkung für beide Legebänder. Das eine Legeband ist als Zuführband ausgebildet, an welches ein Faserflor an der Eingangsseite des Vlieslegers übergeben wird. Das Zuführband mit dem aufliegenden Faserflor wird an der Bandumlenkung um 180° in die Gegenrichtung über zwei Rollen umgelenkt, wobei zwischen den beiden Rollen an der Bandumlenkung ein einziger gerader Bandabschnitt des Legebands ausgebildet wird. Das Gegenband wird ebenfalls an der Bandumlenkung umgelenkt, wobei ein einziger gerader Bandabschnitt des Gegenbands ausgebildet wird. Diese beiden geraden Bandabschnitte der beiden Legebänder sind schräg abwärts gerichtet und verlaufen parallel, wobei zwischen diesen beiden Bandabschnitten der Flor im Klemmschluss beidseitig aufgenommen und geführt ist.Such a fleece layer is from EP 1 828 453 B1 known. It is designed as a so-called tape layer and has two main carriages (upper carriage and laying carriage) as well as two laying tapes that are guided to the main carriage via pulleys. The superstructure has a belt deflection for both laying belts. One of the laying belts is designed as a feed belt to which a fiber web is transferred on the input side of the fleece layer. The feed belt with the web of fibers lying on it is deflected at the belt deflection by 180 ° in the opposite direction over two rollers, a single straight band section of the laying belt being formed between the two rollers on the belt deflection. The opposing band is also deflected at the band deflection, a single straight band section of the opposing band being formed. These two straight band sections of the two laying bands are directed obliquely downwards and run parallel, with the pile being held and guided on both sides in the clamping connection between these two band sections.

Die DE 295 18 587 U1 und die EP 1 136 600 A1 zeigen ebenfalls Vliesleger mit einer solchen Bandumlenkung am Oberwagen mit zwei Umlenkstellen für das Zuführband mit dem aufliegenden Flor.The DE 295 18 587 U1 and the EP 1 136 600 A1 also show non-woven layers with such a belt deflection on the upper carriage with two deflection points for the feed belt with the pile on top.

Aus der EP 0 522 893 A2 ist ein anderer Vliesleger mit zwei Hauptwagen und zwei Legebändern sowie einer Bandumlenkung am Oberwagen bekannt. Die beiden Legebänder werden an der Bandumlenkung unter Bildung eines Einlauftrichters schräg abwärts bis zu einer Klemmstelle zwischen zwei eng benachbarten Umlenkrollen geführt. Der zunächst auf dem Zuführband offen zugeführte Faserflor wird an der Klemmstelle beidseitig eingespannt und dabei um mehr als 90° umgelenkt. Diese Bandumlenkung hat wie der eingangs genannte Stand der Technik für jedes Legeband zwei Umlenkstellen mit Umlenkrollen.From the EP 0 522 893 A2 Another fleece layer with two main carriages and two laying belts as well as a belt deflection on the upper carriage is known. The two laying belts are guided at the belt deflection, forming an inlet funnel, obliquely downwards to a clamping point between two closely spaced deflection rollers. The fiber web initially fed openly on the feed belt is clamped on both sides at the clamping point and deflected by more than 90 °. Like the prior art mentioned at the outset, this tape deflection has two deflection points with deflection rollers for each laying tape.

Die EP 1 367 166 A1 zeigt einen Vliesleger mit zwei Legebändern sowie einer Bandumlenkung am Oberwagen. Der Flor wird an der Bandumlenkung vom zuführenden Legeband abgelöst und separat über eine einzelne rotierende und hintersaugte Umlenkwalze geführt und umgelenkt, wobei das vom Flor befreite Legeband in einer getrennten Bandschlaufe mit sehr großem Umlenkwinkel an der Ablösestelle umgelenkt wird.The EP 1 367 166 A1 shows a fleece layer with two laying belts and a belt deflection on the upper carriage. The pile is detached from the feeding tape at the tape deflection and guided and deflected separately over a single rotating and rear-sucked deflection roller, with the tape freed from the pile being deflected in a separate tape loop with a very large deflection angle at the separation point.

Die gattungsfremde JP S56-26011 A zeigt eine Knautschvorrichtung, mit der eine Bahn durch Schlupf zwischen parallelen Förderbändern geknautscht und dadurch aufgeraut und verdickt wird. Die Förderbänder sind dabei über stationäre Förderrollen geführt.The non-generic JP S56-26011 A shows a crushing device with which a web is crushed by slipping between parallel conveyor belts and thereby roughened and thickened. The conveyor belts are guided over stationary conveyor rollers.

Die vorbekannten Vliesleger sind in ihrer Leistungsfähigkeit, insbesondere in der möglichen Durchlaufgeschwindigkeit des Flors, begrenzt. Dies ist insbesondere bei sehr leichten und empfindlichen Faserfloren der Fall.The previously known fleece layers are limited in their performance, in particular in the possible passage speed of the pile. This is especially the case with very light and sensitive fiber webs.

Es ist Aufgabe der vorliegenden Erfindung, eine verbesserte Vlieslegetechnik aufzuzeigen.It is the object of the present invention to show an improved web-laying technique.

Die Erfindung löst diese Aufgabe mit den Merkmalen im Verfahrens- und Vorrichtungshauptanspruch.The invention solves this problem with the features in the main claim of the method and device.

Die Bandumlenkung weist drei oder mehr Umlenkstellen für das eine Legeband bzw. Zuführband auf. Das Legeband bzw. Zuführband weist an den drei oder mehr Umlenkstellen jeweils einen Umlenkwinkel α, β, γ von weniger als 90° auf. Der Vliesleger mit der beanspruchten Bandumlenkung und das Vlieslegeverfahren haben den Vorteil, dass der Faserflor besser und schonender geführt und über die Bandumlenkung transportiert werden kann. Außerdem sind höhere Durchlaufgeschwindigkeiten des Faserflors als beim Stand der Technik möglich.The belt deflection has three or more deflection points for the one laying belt or feed belt. The laying belt or feed belt has at the three or more deflection points in each case a deflection angle α, β, γ of less than 90 °. The fleece layer with the claimed belt deflection and the fleece laying process have the advantage that the fiber web can be guided better and more gently and transported over the belt deflection. In addition, higher throughput speeds of the fiber web are possible than in the prior art.

Die Anordnung erster und zweiter und ggf. weiterer gerader Bandabschnitte mit einer entsprechenden Zahl von drei oder mehr Umlenkstellen an der Bandumlenkung hat den Vorteil, dass der Faserflor an den kritischen Stellen besser geführt werden kann. Die drei oder mehr Umlenkstellen reduzieren gegenüber dem Stand der Technik die Umlenkwinkel, was ebenfalls für die Führung und den Halt des Flors von Vorteil ist. Die Band- und Florumlenkung kann in mehreren Schritten allmählich und damit schonender erfolgen. Der letzte gerade Bandabschnitt am Ende der Bandumlenkung kann bereits eine Neigung in die der Zuführrichtung entgegengesetzte Richtung haben, wobei in diesem Bandabschnitt der Flor beidseitig im Klemmschluss von den Legebändern geführt sein kann. In diesem Bandabschnitt kann er verfestigt werden, so dass er die letzte Umlenkstelle trotz einer dort nur einseitigen Florführung sicher und auch mit hoher Durchlaufgeschwindigkeit passieren kann.
Fliehkraftbedingte Ablösungen des Faserflors von einem nur einseitig führenden Legeband oder Strukturänderungen des Faserflors an solchen Umlenkstellen können mit der erfindungsgemäßen Bandumlenkung vermieden werden.The arrangement of first and second and possibly further straight band sections with a corresponding number of three or more deflection points on the band deflection has the advantage that the fiber web can be guided better at the critical points. The three or more deflection points reduce the deflection angle compared to the prior art, which is also advantageous for guiding and holding the pile. The ribbon and pile deflection can take place gradually and therefore more gently in several steps. The last straight band section at the end of the band deflection can already have an inclination in the direction opposite to the feed direction, wherein in this band section the pile can be guided by the laying bands on both sides with a clamping connection. It can be solidified in this belt section so that it can pass the last deflection point safely and also at a high throughput speed, despite the pile guidance only on one side there.
Centrifugal force-induced detachment of the fiber web from a laying tape that only runs on one side or structural changes to the fiber web at such deflection points can be avoided with the belt deflection according to the invention.

Der beanspruchte Vliesleger kann für sehr hohe Band- und Florlaufgeschwindigkeiten ausgelegt sein. Hierfür ist eine Ausbildung als gleichläufiger Leger mit gleichsinnig bewegten Hauptwagen von Vorteil. Der Flor kann vom Oberwagen, dem Legewagen auf einem direkten und geraden Weg ohne weitere Umlenkungen zugeführt werden und vom Legewagen auf eine Abzugeinrichtung abgelegt werden.The claimed fleece layer can be designed for very high belt and pile speeds. For this purpose, training as a co-rotating layer with a main carriage moving in the same direction is advantageous. The pile can be fed from the upper carriage, the laying carriage on a direct and straight path without any further diversions and can be deposited by the laying carriage on a haul-off device.

Der Vliesleger kann außerdem eine Spanneinrichtung bzw. Bandlängenausgleichseinrichtung aufweisen, die eine Entkoppelung der Hauptwagen und deren Kinematik ermöglicht. Hierdurch kann das Flächengewicht des abgelegten Vlieses über die Legebreite und/oder über die Vlieslänge beeinflusst und ggf. verändert werden. Außerdem kann der Vliesleger eine Pufferfunktion für den Ausgleich schwankender Einlaufgeschwindigkeiten des Faserflors haben.The fleece layer can also have a tensioning device or tape length compensation device, which enables the main carriages and their kinematics to be decoupled. As a result, the weight per unit area of the laid fleece can be influenced and possibly changed via the laying width and / or the length of the fleece. In addition, the fleece layer can have a buffer function to compensate for fluctuating infeed speeds of the batt.

In den Unteransprüchen sind weitere vorteilhafte Ausgestaltungen der Erfindung angegeben.Further advantageous configurations of the invention are specified in the subclaims.

Der beanspruchte Vliesleger kann folgende Ausgestaltungsmerkmale einzeln oder in Kombination aufweisen.The claimed fleece layer can have the following design features individually or in combination.

Die Umlenkstellen an der Bandumlenkung können von Umlenkrollen gebildet sein.The deflection points on the belt deflection can be formed by deflection rollers.

Das eine Legeband bzw. Zuführband kann an der Bandumlenkung zwei oder mehr gerade Bandabschnitte mit unterschiedlichen Ausrichtungen aufweist.The one laying belt or feed belt can have two or more straight belt sections with different orientations at the belt deflection.

Die geraden Bandabschnitte des einen Legebands bzw. Zuführbands können zwischen den Umlenkstellen, insbesondere zwischen Umlenkrollen, angeordnet sein.The straight belt sections of the one laying belt or feed belt can be arranged between the deflection points, in particular between deflection rollers.

Der in Zuführrichtung erste Bandabschnitt des einen Legebands bzw. Zuführbands kann in Zuführrichtung schräg abwärts gerichtet sein und der zweite oder letzte Bandabschnitt des einen Legebands bzw. Zuführbands kann entgegen der Zuführrichtung schräg abwärts gerichtet sein.The first tape section in the feed direction of the one laying tape or feed belt can be directed obliquely downwards in the feed direction and the second or last tape section of the one laying tape or feed belt can be directed obliquely downwards counter to the feed direction.

Der erste Umlenkwinkel α und der letzte, insbesondere dritte Umlenkwinkel γ des einen Legebands bzw. Zuführbands können jeweils größer als der mittlere, insbesondere zweite Umlenkwinkel β sein.The first deflection angle α and the last, in particular the third deflection angle γ of the one laying belt or feed belt can each be greater than the mean, in particular the second deflection angle β.

Der erste Umlenkwinkel α kann zwischen 55° und 70°, bevorzugt ca. 63° betragen.
Der zweite Umlenkwinkel β kann zwischen 40° und 55°, bevorzugt ca. 46°, betragen.
Der dritte und letzte Umlenkwinkel γ kann zwischen 65° und 75°, bevorzugt ca. 71°, betragen.The first deflection angle α can be between 55 ° and 70 °, preferably approximately 63 °.
The second deflection angle β can be between 40 ° and 55 °, preferably approximately 46 °.
The third and last deflection angle γ can be between 65 ° and 75 °, preferably approximately 71 °.

Die Bandumlenkung für das andere Legeband bzw. Gegenband kann drei oder mehr Umlenkrollen aufweisen.The belt deflection for the other laying belt or counter belt can have three or more deflection rollers.

Das andere Legeband bzw. Gegenband kann an der Bandumlenkung zwei oder mehr gerade Bandabschnitte mit unterschiedlichen Ausrichtungen aufweisen.The other laying belt or counter-belt can have two or more straight belt sections with different orientations at the belt deflection.

Die oberen oder ersten geraden Bandabschnitte beider Legebänder können unterschiedliche Ausrichtungen aufweisen und schräg aufeinander zulaufen.The upper or first straight belt sections of both laying belts can have different orientations and run towards one another at an angle.

Die zweiten oder letzten geraden Bandabschnitte beider Legebänder können eng benachbart und im wesentlichen gleich gerichtet sein.The second or last straight band sections of the two laying bands can be closely adjacent and oriented essentially in the same direction.

Die zweiten oder letzten geraden Bandabschnitte beider Legebänder können parallel zueinander oder mit einem spitzen Winkel konisch aufeinander zu verlaufen.The second or last straight band sections of both laying bands can run parallel to one another or conically to one another at an acute angle.

Der Oberwagen kann an der Bandumlenkung eine Florführung mit mehreren Abschnitten aufweisen, in denen der Faserflor erst einseitig und danach beidseitig geführt ist.The superstructure can have a pile guide with several sections at the belt deflection, in which the fiber pile is first guided on one side and then on both sides.

Ein erster offener Führungsabschnitt der Florführung kann zwischen den ersten geraden Bandabschnitten beider Legebänder gebildet sein, wobei der Faserflor am einen Legeband bzw. Zuführband einseitig geführt ist.A first open guide section of the pile guide can be formed between the first straight tape sections of both laying tapes, the fiber pile being guided on one side on one laying tape or feed tape.

Ein folgender geschlossener Führungsabschnitt der Florführung kann zwischen den zweiten oder letzten geraden Bandabschnitten beider Legebänder gebildet sein, wobei der Faserflor im Klemmschluss beidseitig geführt ist.A subsequent closed guide section of the pile guide can be formed between the second or last straight tape sections of both laying tapes, the fiber pile being guided on both sides in the clamping connection.

Die Hauptwagen des Vlieslegers können parallel zueinander beweglich angeordnet und eigenständig angetrieben und gesteuert sein.
Der Vliesleger kann gesteuerte Bandantriebe für den umlaufenden Antrieb der Legebänder aufweisen.The main carriages of the web layer can be arranged movably parallel to each other and independently driven and controlled.
The fleece layer can have controlled belt drives for the rotating drive of the laying belts.

Der Vliesleger kann eine Spanneinrichtung, insbesondere mit einer Hilfswagenanordnung, für die Legebänder aufweisen, die mit den Hauptwagen gekoppelt ist.The fleece layer can have a tensioning device, in particular with an auxiliary carriage arrangement, for the laying belts, which is coupled to the main carriage.

Die Legebänder können im Bereich zwischen den Hauptwagen in einem einzelnen geraden Abschnitt parallel geführt sein und den Faserflor (9) zwischen sich einklemmen.The laying belts can be guided in parallel in the area between the main carriages in a single straight section and clamp the batt (9) between them.

Der Vliesleger kann eine gesteuerte Abzugeinrichtung, insbesondere ein Abzugband, für das abgelegte, aus dem Faserflor gebildete, mehrlagige Vlies aufweisen.The fleece layer can have a controlled take-off device, in particular a take-off belt, for the deposited, multi-layer fleece formed from the batt.

Der Vliesleger kann einer Florbildungseinrichtung, insbesondere einer Karde oder Krempel, nachgeschaltet sein.
Der Vliesleger kann einer Vliesverfestigungseinrichtung, insbesondere einer Nadelmaschine, vorgeschaltet sein.The fleece layer can be connected downstream of a pile forming device, in particular a card or card.
The fleece layer can be connected upstream of a fleece bonding device, in particular a needle loom.

Die Erfindung ist in den Zeichnungen beispielhaft und schematisch dargestellt. Im Einzelnen zeigen:

Figur 1:
eine schematische Darstellung eines Vlieslegers mit zwei Hauptwagen und einer Bandumlenkung am Oberwagen und
Figur 2:
eine vergrößerte und abgebrochene Detailansicht des Oberwagens und der Bandumlenkung.
The invention is shown schematically and by way of example in the drawings. Show in detail:
Figure 1:
a schematic representation of a fleece layer with two main carriages and a belt deflection on the upper carriage and
Figure 2:
an enlarged and broken detailed view of the superstructure and the belt deflection.

Die Erfindung betrifft einen Vliesleger (1) sowie ein Vlieslegeverfahren. Die Erfindung betrifft auch eine Faserbehandlungsanlage mit einem Vliesleger (1) und weiteren Anlagenkomponenten.The invention relates to a fleece layer (1) and a fleece laying method. The invention also relates to a fiber treatment plant with a fleece layer (1) and other plant components.

Der Vliesleger (1) dient dazu, einen zugeführten Faserflor (9) zu einem mehrlagigen Vlies (10) abzutäfeln. Der Vliesleger (1) weist hierfür im Ausführungsbeispiel von Figur 1 zwei Hauptwagen (2,3), nämlich einen ersten Hauptwagen oder Oberwagen (2) und einen zweiten Hauptwagen oder Legewagen (3), und zwei endlose und jeweils in einer Schleife über beide Hauptwagen (2,3) geführte Legebänder (6,7) auf. Der Vliesleger (1) besitzt ferner eine quer oder schräg zur Bewegungsbahn der Hauptwagen (2,3) gerichtete Abzugeinrichtung (8) für die Aufnahme und den Abtransport des mehrlagigen Vlieses (10). Außerdem kann der Vliesleger (1) eine Spanneinrichtung (4) aufweisen.The fleece layer (1) is used to panel a fed fiber web (9) to form a multi-layer fleece (10). The fleece layer (1) has for this purpose in the embodiment of Figure 1 two main carriages (2,3), namely a first main carriage or upper carriage (2) and a second main carriage or laying carriage (3), and two endless laying belts (6,7) each guided in a loop over both main carriages (2,3) on. The fleece layer (1) also has a take-off device (8) directed transversely or obliquely to the movement path of the main carriages (2, 3) for receiving and transporting the multi-layer fleece (10). In addition, the fleece layer (1) can have a tensioning device (4).

Die beiden in getrennten Schleifenbahnen geführten Legebänder (6,7) kommen am Oberwagen (2) aus unterschiedlichen Richtungen zusammen, werden dort über eine nachfolgend beschriebene Bandumlenkung (12) geführt und treten am Oberwagen (2) in Parallellage aus, wobei sie zwischen sich den Faserflor (9) aufnehmen und beidseitig im Klemmschluss führen. Im gezeigten Ausführungsbeispiel eines gleichsinnigen Vlieslegers (1) wird von diesem parallelen Bandabschnitt der Faserflor (9) direkt in einer geraden Bahn an den Legewagen (3) übergeben. Am Legewagen (3) treten die Legebänder (6,7) wieder auseinander und werden nach entgegengesetzten Richtungen weggeführt, wobei der freigegebene Faserflor (9) nach unten auf die Abzugeinrichtung (8) austritt und dort abgelegt wird. Der Legewagen (7) führt hierfür reversierende Fahrbewegungen in Querrichtung zur Abzugeinrichtung (8) auf, welche eine mit der Legewagenbewegung vorzugsweise gekoppelte Vorwärtsbewegung ausführt und das in schuppenförmig abgetäfelte Vlies (10) abtransportiert.The two laying belts (6,7), which are guided in separate loop paths, come together on the upper carriage (2) from different directions, are guided there via a belt deflection (12) described below and emerge from the upper carriage (2) in a parallel position, with the Pick up the fiber pile (9) and on both sides lead in the clamp connection. In the exemplary embodiment shown of a nonwoven laying machine (1) in the same direction, the fiber web (9) is transferred from this parallel band section directly in a straight path to the laying carriage (3). On the laying carriage (3) the laying belts (6, 7) come apart again and are led away in opposite directions, the released fiber web (9) emerging down onto the take-off device (8) and being deposited there. For this purpose, the laying carriage (7) performs reversing movements in the transverse direction to the take-off device (8), which carries out a forward movement, preferably coupled with the laying carriage movement, and transports away the fleece (10), which is peeled off in flaky form.

Die Hauptwagen (2,3) sind mittels Laufwerken (31) an einer Schienenführung im Gestell des Vlieslegers (1) parallel zueinander beweglich gelagert und geführt. Sie haben dabei jeweils einen eigenen und eigenständig steuerbaren Antrieb (nicht dargestellt) für ihre Fahrbewegung. Beim gezeigten gleichsinnigen Leger bewegen sich die Hauptwagen (2,3) in die gleiche Fahrtrichtung, wobei der Oberwagen (2) im Vergleich zum Legewagen (3) doppelte Wege und eine doppelte Geschwindigkeit hat.The main carriages (2, 3) are movably supported and guided parallel to one another by means of drives (31) on a rail guide in the frame of the fleece layer (1). They each have their own and independently controllable drive (not shown) for their travel movement. In the same-direction laying shown, the main carriages (2, 3) move in the same direction of travel, the upper carriage (2) having double paths and twice the speed compared to the laying carriage (3).

Die Fahrbewegungen der Hauptwagen (2,3) können voneinander entkoppelt sein, so dass durch Bewegungsunterschiede die Schlaufenlänge der zwischen den Hauptwagen (2,3) parallel geführten Legebänder (6,7) verändert und dadurch ein Florspeicher gebildet werden kann. Die Legebänder (6,7) können ebenfalls eigenständige Antriebe aufweisen, die sie in eine gesteuerte Umlaufbewegung versetzen. Durch eine solche Konfiguration ist es möglich, die Austrittsgeschwindigkeit des Faserflors (9) am Legewagen (3) zu beeinflussen und insbesondere von der Fahrgeschwindigkeit des Legewagens (3) zu entkoppeln. Hierüber kann die Florablage auf der Abzugeinrichtung (8) und das Flächengewicht des Vlieses (10) beeinflusst und über die Legebreite des hin- und herfahrenden Legewagens (3) verändert werden. Damit lassen sich einerseits Randverdickungen des Vlieses (10) vermeiden und andererseits bewusste Profilierungen in Quer- und/oder Längsrichtung des Vlieses (10) bilden. Mit solchen Profilierungen kann das verfestigte Endprodukt eine gewünschte Flächengewichtsverteilung erhalten oder es kann Fehlerkompensation von Flor- oder Verfestigungsfehlern betrieben werden. Außerdem ist es möglich, durch die Hauptwagenentkoppelung und die Spanneinrichtung (4) Geschwindigkeitsschwankungen im zugeführten Faserflor (9) zu kompensieren und eine Pufferwirkung zu entfalten.The travel movements of the main carriages (2,3) can be decoupled from one another, so that the loop length of the laying belts (6,7) running parallel between the main carriages (2,3) can be changed due to differences in movement, thereby forming a pile storage system. The laying belts (6, 7) can also have independent drives that set them in a controlled circular movement. With such a configuration it is possible to influence the exit speed of the fiber web (9) on the laying carriage (3) and in particular to decouple it from the traveling speed of the laying carriage (3). In this way, the pile deposit on the take-off device (8) and the weight per unit area of the fleece (10) can be influenced and can be changed over the laying width of the laying carriage (3) moving back and forth. In this way, on the one hand, thickening of the edges of the fleece (10) can be avoided and, on the other hand, deliberate profiling can be formed in the transverse and / or longitudinal direction of the fleece (10). With such profiles, the consolidated end product can have a desired basis weight distribution or error compensation for pile or consolidation errors can be operated. In addition, by decoupling the main carriage and the tensioning device (4), it is possible to compensate for speed fluctuations in the fed fiber web (9) and to develop a buffer effect.

Mit dieser vorbeschriebenen Grundkonzeption kann der Vliesleger (1) in unterschiedlicher Weise ausgebildet sein, z.B. entsprechend der EP 1 828 453 B1 , oder der DE 203 21 834 U1 oder der EP 0 517 563 B2 . Der Unterschied zu den vorbekannten Vlieslegern besteht vornehmlich in der Gestaltung des Oberwagens (2) und der Bandumlenkung (12).With this basic conception described above, the fleece layer (1) can be designed in different ways, for example according to the EP 1 828 453 B1 , or the DE 203 21 834 U1 or the EP 0 517 563 B2 . The main difference to the previously known fleece layer is the design of the superstructure (2) and the belt deflection (12).

Figur 2 zeigt diese Bandumlenkung (12) in einer vergrößerten Detailansicht. Die beiden Legebänder (6,7) werden dem Oberwagen (2) und der Bandumlenkung (12) an der Oberseite an einer Einlassstelle (32) getrennt voneinander und aus entgegengesetzten Richtungen zugeführt. Das eine Legeband (6) bildet das sogenannte Zuführband, das den Faserflor (9) an der in Figur 1 linken Eingangsseite (35) des Vliesleger (1) aufnimmt, trägt und dem Oberwagen (2) zuführt. Die Florführung kann einseitig und in offener Lage sein, wobei ggf. ein oder mehrere Andrückwalzen vorhanden sind. Figure 2 shows this belt deflection (12) in an enlarged detailed view. The two laying belts (6,7) are fed to the upper carriage (2) and the belt deflector (12) on the upper side at an inlet point (32) separately from one another and from opposite directions. One laying belt (6) forms the so-called feed belt, which attaches the fiber web (9) to the in Figure 1 the left input side (35) of the fleece layer (1) receives, carries and feeds to the upper carriage (2). The pile guide can be one-sided and in an open position, with one or more pressure rollers possibly being present.

Das andere Legeband (7) wird nachfolgend als Gegenband bezeichnet. Beide Legebänder (6,7) werden in einer im Wesentlichen horizontalen Ausrichtung dem Oberwagen (2) und der Bandumlenkung (12) zugeführt. Das Zuführband (6) wird an der Bandumlenkung (12) aus seiner Zuführrichtung (11) in die Gegenrichtung um ca. 180° nach unten zu einer Auslassstelle (33) am Oberwagen umgelenkt. Hier treten beide Legebänder (6,7) in eng benachbarter Parallelage aus und bilden im Sandwich mit dem Faserflor (9) einen beidseitigen Florführungsbereich (34).The other laying belt (7) is referred to below as the opposing belt. Both laying belts (6, 7) are fed to the upper carriage (2) and the belt deflector (12) in an essentially horizontal orientation. The feed belt (6) moves out of its feed direction at the belt deflection (12) (11) deflected in the opposite direction by approx. 180 ° downwards to an outlet point (33) on the superstructure. Here, both laying belts (6, 7) emerge in a closely spaced parallel position and, in a sandwich with the fiber pile (9), form a pile guide area (34) on both sides.

In der gezeigten Variante sind das Obertrum (13) und das Untertrum (14) des Zuführbandes (6) parallel ausgerichtet, wobei die Auslaufhöhe des Oberwagens (2) und die Einlaufhöhe des Legewagens (3) gleich sind. Hieraus resultiert ein Umlenkwinkel von 180°. Wenn die besagte Auslauf- und Einlaufhöhe unterschiedlich sind, kann das Untertrum (14) eine Neigung gegen die Horizontale haben, so dass der Umlenkwinkel von 180° geringfügig abweichen kann. Eine Winkelabweichung kann auch aus anderen Gründen eintreten, z.B. wenn das Obertrum (13) eine Schräglage hat.In the variant shown, the upper run (13) and the lower run (14) of the feed belt (6) are aligned in parallel, the outlet height of the upper carriage (2) and the inlet height of the laying carriage (3) being the same. This results in a deflection angle of 180 °. If the said outlet and inlet heights are different, the lower run (14) can have an inclination to the horizontal so that the deflection angle can differ slightly from 180 °. An angular deviation can also occur for other reasons, e.g. when the upper run (13) is inclined.

Das Gegenband (7) wird an der Bandumlenkung zwar ebenfalls umgelenkt, wobei die Eintritts- und Austrittsrichtung des Gegenbands (7) am Oberwagen (2) gleichgerichtet und insbesondere horizontal sein kann. Mit der Bandumlenkung (12) wird dazwischen ein Höhenversatz des Gegenbands (7) zwischen Einlass- und Auslassstelle (32,33) bewirkt.The counter belt (7) is also deflected at the belt deflection, whereby the entry and exit direction of the counter belt (7) on the upper carriage (2) can be in the same direction and, in particular, be horizontal. The belt deflection (12) causes a height offset of the opposing belt (7) between the inlet and outlet points (32, 33).

Beide oben eintretenden Legebänder (6,7) werden an der Bandumlenkung (12) nach unten umgelenkt und treten am Oberwagen (2) in einer tieferen Lage wieder aus, die in der vorerwähnten Weise vorzugsweise die gleiche Höhe wie die Einlaufstelle am Legewagen (3) hat.Both laying belts (6,7) entering at the top are deflected downwards at the belt deflection (12) and exit again at the upper carriage (2) in a lower position, which in the aforementioned manner is preferably the same height as the entry point on the laying carriage (3) Has.

Wie Figur 2 verdeutlicht, hat die Bandumlenkung (12) drei vorzugsweise gerundete Umlenkstellen (15,16,17) für das den Faserflor (9) tragende, sog. florführende Legeband (6). Die Zahl der Umlenkstellen kann alternativ auch größer sein und z.B. vier betragen. Die Umlenkstellen (15,16,17) werden z.B. jeweils von frei drehbaren oder ggf. angetriebenen zylindrischen Umlenkrollen gebildet, über deren Mantel das Zuführband (6) geführt ist. Alternativ sind andere Umlenkmittel möglich. An den Umlenkstellen (15,16,17), insbesondere an den drehbaren Umlenkrollen, kann auch eine Haltewirkung für den Faserflor (9) vermittelnde Einrichtung vorhanden sein, die z.B. eine Halte- oder Haftwirkung durch Absaugen oder Blasen von Luft, durch elektrostatische Kräfte oder dgl. erzeugt.As Figure 2 clearly shows, the tape deflection (12) has three preferably rounded deflection points (15, 16, 17) for the so-called pile-guiding laying tape (6) carrying the fiber web (9). The number of deflection points can alternatively also be greater, for example four. The deflection points (15,16,17) are, for example, each of freely rotatable or possibly driven cylindrical pulleys formed, over the shell of which the feed belt (6) is guided. Alternatively, other deflection means are possible. At the deflection points (15,16,17), in particular on the rotatable deflection rollers, there can also be a holding effect for the fiber web (9) mediating device, for example a holding or adhesive effect by sucking or blowing air, by electrostatic forces or like generated.

Die drei Umlenkstellen (15,16,17) bzw. Umlenkollen sind mit Abstand übereinander angeordnet, wobei die mittlere Umlenkstelle (16) in Zuführrichtung (11) weiter vorn als die beiden anderen Umlenkstellen (15,17) liegt. Hierdurch wird zwischen der oberen und der mittleren Umlenkstelle bzw. Umlenkrolle (15,16) ein erster gerader Bandabschnitt (22) und zwischen der mittleren (16) und der unteren Umlenkstelle bzw. Umlenkrolle (17) ein zweiter gerader Bandabschnitt (23) des Zuführbands (6) gebildet. Der in Zuführrichtung (11) erste Bandabschnitt (22) ist in Zuführrichtung (11) schräg abwärts gerichtet. Der zweite Bandabschnitt (23) ist entgegen der Zuführrichtung (11) schräg abwärts gerichtet. Falls die Bandumlenkung (12) mehr als drei Umlenkstellen für das Zuführband (6) hat, ist der Bandabschnitt (23) der letzte Bandabschnitt vor der Auslassstelle (33) des Oberwagens (2).The three deflection points (15,16,17) or deflection rollers are arranged at a distance one above the other, the middle deflection point (16) being further forward in the feed direction (11) than the other two deflection points (15,17). This creates a first straight belt section (22) between the upper and middle deflection point or deflection roller (15, 16) and a second straight belt section (23) of the feed belt between the middle (16) and lower deflection point or deflection roller (17) (6) formed. The first strip section (22) in the feed direction (11) is directed obliquely downwards in the feed direction (11). The second band section (23) is directed obliquely downwards against the feed direction (11). If the belt deflector (12) has more than three deflection points for the feed belt (6), the belt section (23) is the last belt section before the outlet point (33) of the upper carriage (2).

Das Zuführband (6) hat an den gezeigten drei Umlenkstellen (15,16,17) jeweils einen Umlenkwinkel α, β, γ, der weniger als 90° beträgt. In der Summe ergeben die Winkel α, β, γ den Gesamt-Umlenkungswinkel von z.B. 180°.At the three deflection points (15, 16, 17) shown, the feed belt (6) each has a deflection angle α, β, γ which is less than 90 °. In total, the angles α, β, γ give the total deflection angle of e.g. 180 °.

Im gezeigten Ausführungsbeispiel ist der erste Umlenkwinkel α an der ersten Umlenkstelle bzw. Umlenkrolle (15) und auch der letzte, insbesondere dritte Umlenkwinkel γ an der letzten oder dritten Umlenkstelle (17) jeweils größer als der Umlenkwinkel γ an der mittleren Umlenkstelle (16). Der erste Umlenkwinkel α kann zwischen 55° und 70°, vorzugsweise ca. 63°, betragen. Der zweite kleinere Umlenkwinkel β kann zwischen 40° und 55°, bevorzugt ca. 46°, betragen. Der dritte und z.B. letzte Umlenkwinkel γ kann zwischen 65° und 75° liegen und beträgt bevorzugt ca. 71°.In the exemplary embodiment shown, the first deflection angle α at the first deflection point or deflection roller (15) and also the last, in particular third deflection angle γ at the last or third deflection point (17), are each greater than the deflection angle γ at the middle one Deflection point (16). The first deflection angle α can be between 55 ° and 70 °, preferably approximately 63 °. The second smaller deflection angle β can be between 40 ° and 55 °, preferably approximately 46 °. The third and, for example, last deflection angle γ can be between 65 ° and 75 ° and is preferably approximately 71 °.

Die vorgenannten Umlenkwinkel α, β, γ, können in der Größe und Zuordnung variieren. In einer anderen Ausführungsform kann z.B. die erste Umlenkstelle bzw. Umlenkrolle (15) am Oberwagen (2) gegen die Zuführrichtung (11) horizontal verschoben sein, wobei die beiden anderen Umlenkstellen bzw. Umlenkrollen (16,17) ihre Anordnung und Ausbildung behalten. Hierdurch wird der erste Umlenkwinkel α kleiner und der zweite Umlenkwinkel β größer als in Figur 2, wobei sich ggf. auch deren Größenverhältnis ändert, insbesondere umkehrt.The aforementioned deflection angles α, β, γ can vary in size and assignment. In another embodiment, for example, the first deflection point or deflection roller (15) on the upper carriage (2) can be shifted horizontally against the feed direction (11), with the two other deflection points or deflection rollers (16, 17) retaining their arrangement and design. This makes the first deflection angle α smaller and the second deflection angle β larger than in FIG Figure 2 , whereby their size ratio may also change, in particular vice versa.

Die Bandumlenkung (12) weist für das andere Gegenband (7) ebenfalls drei oder mehr Umlenkrollen (18 bis 21) auf. Hierbei sind drei Umlenkrollen (18,19,20) mit Abstand übereinander angeordnet. In Zulaufrichtung des Gegenband (7) zum Oberwagen (2) gesehen liegt die erste Umlenkrolle (18) dabei vor der mittleren Umlenkrolle (19) und diese wieder vor der unteren Umlenkrolle (20). Zwischen der ersten und der zweiten bzw. mittleren Umlenkrolle (18,19) wird ein erster gerader Bandabschnitt (24) und zwischen der zweiten bzw. mittleren Umlenkrolle (19) und der unteren und/oder dritten Umlenkrolle (20) ein zweiter gerader Bandabschnitt (25) gebildet. Auch diese geraden Bandabschnitte (24,25) haben unterschiedliche Ausrichtungen.The belt deflection (12) also has three or more deflection rollers (18 to 21) for the other counter belt (7). Here, three pulleys (18, 19, 20) are arranged one above the other at a distance. Seen in the feed direction of the mating belt (7) to the upper carriage (2), the first deflection roller (18) lies in front of the middle deflection roller (19) and this again in front of the lower deflection roller (20). A first straight belt section (24) is inserted between the first and the second or middle deflection roller (18, 19) and a second straight belt section (20) is inserted between the second or middle deflection roller (19) and the lower and / or third deflection roller (20). 25) formed. These straight band sections (24, 25) also have different orientations.

Für das Gegenband (7) ist außerdem noch eine vierte Umlenkrolle (21) neben der unteren Umlenkrolle (20) vorgesehen, mit der das Gegenband (7) um mehr als 180° umgelenkt wird und dann am Auslass (33) des Oberwagens (2) eine parallele und z.B. horizontale Lage zum Zuführband (6) und dessen Untertrum (14) einnimmt. Eine unterhalb der Umlenkrollen (17, 20) angeordnete Stützrolle (27) stützt das umgelenkte Gegenband (7). Sie kann verstellbar sein, um die Bandhöhe und den Abstand zum Zuführband (6) einzustellen und ggf. an unterschiedliche Flordicken anzupassen.For the counter belt (7) a fourth deflection roller (21) is also provided next to the lower deflection roller (20), with which the counter belt (7) is deflected by more than 180 ° and then at the outlet (33) of the upper carriage (2) assumes a parallel and, for example, horizontal position to the feed belt (6) and its lower run (14). A support roller (27) arranged below the deflection rollers (17, 20) supports the deflected counter-belt (7). It can be adjustable in order to adjust the belt height and the distance to the feed belt (6) and, if necessary, to adapt it to different pile thicknesses.

Am Auslass (33) des Oberwagens (2) ist das Gegenband (7) unten angeordnet und trägt den Faserflor (9), wobei das Zuführband (6) darüber angeordnet ist und den Faserflor (9) von oben abdeckt.At the outlet (33) of the upper carriage (2) the counter belt (7) is arranged below and carries the fiber web (9), the feed belt (6) being arranged above and covering the fiber web (9) from above.

Gemäß Figur 2 wird der Faserflor (9) auf dem Obertrum (13) des Zuführbandes (6) liegend an der oben liegenden Einlassstelle (32) dem Oberwagen (2) und der Bandumlenkung (12) zugeführt. Im anschließenden, schräg abwärts gerichteten geraden Bandabschnitt (22) ist der Faserflor (9) ebenfalls einseitig auf dem Zuführband (6) liegend geführt. Der gegenüberliegende erste gerade Bandabschnitt (24) des Gegenbands (7) ist weit distanziert. Die ersten geraden Bandabschnitte (22,24) beider Legebänder (6,7) weisen unterschiedliche Ausrichtungen auf und laufen schräg aufeinander zu.According to Figure 2 the fiber web (9) is fed to the upper run (2) and the belt deflector (12) lying on the upper run (13) of the feed belt (6) at the inlet point (32) above. In the subsequent straight belt section (22) directed obliquely downwards, the fiber web (9) is also guided lying on one side on the feed belt (6). The opposite, first straight belt section (24) of the counter belt (7) is far apart. The first straight band sections (22,24) of both laying bands (6,7) have different orientations and run towards one another at an angle.

Die zweiten oder letzten geraden Bandabschnitte (23,25) beider Legebänder (6,7) verlaufen eng benachbart und sind im Wesentlichen gleich gerichtet, wobei ihre Ausrichtung eine Richtungskomponente entgegen der Zuführrichtung (11) hat. Die zweiten oder letzten geraden Bandschnitte (23,25) bilden dabei zwischen sich einen engen Spalt, in dem der Faserflor (9) aufgenommen und ggf. mit Klemmschluss beidseitig geführt ist. Die besagten Bandabschnitte (23,25) können dabei parallel zueinander verlaufen. Sie können zum Zwecke einer Florkompaktierung auch mit einem spitzen Winkel konisch aufeinander zu verlaufen und dadurch einen in Florlaufrichtung sich verengenden Spalt bilden. Die Form und Größe des Spalts kann eingestellt und verändert werden.The second or last straight belt sections (23, 25) of both laying belts (6, 7) run closely adjacent and are essentially aligned in the same direction, their orientation having a directional component opposite to the feed direction (11). The second or last straight ribbon cuts (23, 25) form a narrow gap between them, in which the fiber web (9) is received and, if necessary, guided on both sides with a clamp connection. Said belt sections (23, 25) can run parallel to one another. For the purpose of pile compacting, they can also run conically towards one another at an acute angle and thereby create a gap that narrows in the direction of pile travel form. The shape and size of the gap can be adjusted and changed.

Wie Figur 2 verdeutlicht, können die Umlenkstellen bzw. die betreffenden Mantelbereiche der Umlenkrollen (16,19) der Legebänder (6,7) eine unterschiedliche Höhe aufweisen, wobei z.B. die Umlenkstelle des Gegenbandes (7) etwas höher liegt. Hierzu können die Umlenkrollen (16,19) mit ihren Achsen auf gleicher Höhe angeordnet sein, wobei der Rollendurchmesser der Umlenkrolle (16) größer als derjenige der Umlenkrolle (19) ist. Am Scheitel der Umlenkstelle bzw. Umlenkrolle (16), an der das Zuführband (6) aus dem Bandabschnitt (22) kommend seine Richtung ändert und in den in Gegenrichtung geneigten Bandabschnitt (23) übergeht, liegt dem Faserflor (9) bereits der gerade Bandabschnitt (25) des Gegenbands (7) gegenüber. Andererseits endet der gerade Bandabschnitt (25) des Gegenbands (7) vor dem geraden Bandabschnitt (23) des Zuführbands (6). Die unteren Umlenkrollen (17,20) können in etwa gleich große Durchmesser haben, wobei die Umlenkrolle (20) des Gegenbands (7) mit ihrer Achse etwas oberhalb der Achse der Umlenkrolle (17) angeordnet ist. Die Umlenkrollen (17 bis 21) beider Legebänder (6,7) können verstellbare Achsen haben und sich an unterschiedliche Flordicken oder sonstige Floreigenschaften anpassen lassen.As Figure 2 clarified, the deflection points or the relevant jacket areas of the deflection rollers (16, 19) of the laying belts (6, 7) can have different heights, with the deflection point of the counter belt (7) being somewhat higher, for example. For this purpose, the deflection rollers (16, 19) can be arranged with their axes at the same height, the roller diameter of the deflection roller (16) being larger than that of the deflection roller (19). At the apex of the deflection point or deflection roller (16), at which the feed belt (6) coming from the belt section (22) changes its direction and merges into the belt section (23) inclined in the opposite direction, the fiber web (9) already has the straight belt section (25) of the counter band (7) opposite. On the other hand, the straight belt section (25) of the opposing belt (7) ends before the straight belt section (23) of the feed belt (6). The lower deflecting rollers (17, 20) can have approximately the same diameter, the deflecting roller (20) of the counter-belt (7) being arranged with its axis somewhat above the axis of the deflecting roller (17). The pulleys (17 to 21) of the two laying belts (6, 7) can have adjustable axes and can be adapted to different pile thicknesses or other pile properties.

Gemäß Figur 2 weist der Oberwagen (2) an der Bandumlenkung (12) eine Florführung (28) mit mehreren, z.B. zwei Führungsabschnitten (29,30) auf, in denen der Faserflor (9) erst einseitig und danach beidseitig geführt ist. Ein erster offener Führungsabschnitt (29) wird dabei zwischen den ersten geraden Bandabschnitten (22,24) der Legebänder (6,7) gebildet, die trichterartig mit einem großen Öffnungswinkel von z.B. mehr als 10° schräg aufeinander zu verlaufen. Der Faserflor (9) ist hier einseitig am Zuführband (6) geführt. Durch den moderaten Umlenkwinkel α hebt der offen geführte Faserflor (9) auch bei hohen Laufgeschwindigkeiten nicht vom Zuführband (6) ab. An den ersten offenen Führungsabschnitt (29) schließt im gezeigten Ausführungsbeispiel der zweite geschlossene Führungsabschnitt (30) an, in den der Faserflor (9) über einen ebenfalls moderaten Umlenkwinkel β führungsfrei eintaucht.According to Figure 2 the upper carriage (2) has a pile guide (28) with several, for example two, guide sections (29,30) on the belt deflection (12), in which the fiber pile (9) is guided first on one side and then on both sides. A first open guide section (29) is formed between the first straight belt sections (22,24) of the laying belts (6,7), which run obliquely to one another in a funnel-like manner with a large opening angle of, for example, more than 10 °. The fiber web (9) is guided here on one side on the feed belt (6). Due to the moderate deflection angle α does not lift the openly guided fiber web (9) from the feed belt (6) even at high running speeds. In the exemplary embodiment shown, the first open guide section (29) is followed by the second closed guide section (30) into which the fiber web (9) dips without a guide over an equally moderate deflection angle β.

Der zweite Führungsabschnitt (30) bildet einen Klemmabschnitt zwischen den zweiten geraden Bandabschnitten (23,25), zwischen denen der Faserflor (9) im Klemmschluss beidseitig geführt ist. Der Klemmbereich (30) ist zur Auslassstelle (33) gerichtet und endet kurz davor. Am Ende des Klemmbereichs (30) wird die beidseitige Führung wieder aufgehoben, wobei der ggf. kompaktierte und zusätzlich stabilisierte Faserflor (9) an der dritten Umlenkstelle (17) wieder unter einseitiger Führung am Zuführband (6) moderat um den Winkel γ umgelenkt wird und dann in den auslassseitigen (33) beidseitigen Führungsbereich (34) zwischen den erneut zusammengeführten Legebändern (6,7) eintritt. Durch die Schräglage des Klemmbereichs (30) und der geraden Bandabschnitte (23,25) hat der Faserflor (9) bereits eine Richtungskomponente entgegen der Zuführrichtung (11) und in Weiterführrichtung zum Legewagen (3). Auch an dieser Umlenkstelle (17) löst es sich somit trotz einseitiger Führung nicht vom tragenden Zuführband (6). Dies ist auch bei hohen Laufgeschwindigkeiten und entsprechend hohen Fliehkräften der Fall.The second guide section (30) forms a clamping section between the second straight band sections (23, 25), between which the fiber web (9) is guided on both sides in the clamping connection. The clamping area (30) is directed towards the outlet point (33) and ends shortly before it. At the end of the clamping area (30), the two-sided guidance is canceled again, with the possibly compacted and additionally stabilized fiber web (9) at the third deflection point (17) again being moderately deflected by the angle γ under one-sided guidance on the feed belt (6) and then enters the guide area (34) on the outlet side (33) on both sides between the again brought together laying strips (6,7). Due to the inclined position of the clamping area (30) and the straight tape sections (23, 25), the fiber web (9) already has a directional component opposite to the feed direction (11) and in the direction of continuation to the laying carriage (3). Even at this deflection point (17), it does not detach from the load-bearing feed belt (6) despite being guided on one side. This is also the case at high running speeds and correspondingly high centrifugal forces.

Dem Vliesleger (1) können an der Eingangsseite (35) eine oder mehrere Anlagenkomponenten vorgeschaltet sein. Dies kann z.B. eine Florbildungseinrichtung, insbesondere eine Karde oder eine Krempel, sein. Außerdem kann eine Streck- oder Staucheinrichtung, ein Florspeicher oder dergleichen andere Anlagenkomponente vorgeschaltet sein. Die genannten Anlagenkomponenten sind der Übersicht halber nicht dargestellt.One or more system components can be connected upstream of the fleece layer (1) on the input side (35). This can, for example, be a pile forming device, in particular a card or card. In addition, a stretching or compressing device, a pile storage device or other similar system components can be connected upstream. For the sake of clarity, the system components mentioned are not included shown.

Auf der Ausgangsseite des Vlieslegers (1) und der Abgabestelle der Abzugeinrichtung (8) können ebenfalls ein oder mehrere Anlagenkomponenten nachgeschaltet sein. Dies kann eine Vliesverfestigungseinrichtung sein, z.B. eine einstufige oder mehrstufige Nadelmaschine, eine Wasserstrahlverfestigungsanlage, eine thermische Verfestigungseinrichtung oder dergleichen. Desgleichen kann auch ein Ausgleichsband zur Pufferung und Kompensation schwankender Vliesabgabegeschwindigkeiten zwischen Vliesleger (1) und Verfestigungseinrichtung, insbesondere Nadelmaschine, geschaltet sein. Auch diese nachgeschalteten Anlagekomponenten sind der Übersicht halber nicht dargestellt.One or more system components can also be connected downstream on the output side of the fleece layer (1) and the delivery point of the take-off device (8). This can be a web bonding device, e.g. a single-stage or multi-stage needling machine, a hydroentanglement system, a thermal consolidation device or the like. Likewise, a compensating belt for buffering and compensating for fluctuating web delivery speeds can also be connected between the web layer (1) and the consolidation device, in particular a needle machine. These downstream system components are also not shown for the sake of clarity.

Abwandlungen der gezeigten und beschriebenen Ausführungsformen sind in verschiedener Weise möglich. Die Zahl der Umlenkstellen (15,16,17) des Zuführbands (6) kann größer als drei sein und kann z.B. vier oder fünf betragen, wobei sich die Zahl und Ausrichtung der geraden Bandabschnitte (22,23) entsprechend erhöht. Auch die Größe und Verteilung der Umlenkwinkel kann sich dabei ändern. Die Umlenkstellen (18,19,20) des Gegenbands (7) können entsprechend angepasst sein. Die Florführung (28) kann dabei ebenfalls eine größere Abschnittszahl erhalten, wobei die Zahl der offenen Führungsabschnitte (29) und/oder der Klemmabschnitte (30) erhöht werden kann.Modifications of the embodiments shown and described are possible in various ways. The number of deflection points (15, 16, 17) of the feed belt (6) can be greater than three and can e.g. be four or five, the number and orientation of the straight band sections (22,23) increasing accordingly. The size and distribution of the deflection angles can also change. The deflection points (18, 19, 20) of the counter-belt (7) can be adapted accordingly. The pile guide (28) can also have a larger number of sections, it being possible to increase the number of open guide sections (29) and / or clamping sections (30).

Der Vliesleger (1) kann z.B. als gegenläufiger Leger ausgebildet sein, bei dem sich die Hauptwagen (2,3) in entgegengesetzten Richtungen bewegen und die im Führungsbereich (34) parallel laufenden Legebänder (6,7) zwischen den beiden Hauptwagen (2,3) über eine gestellfeste Umlenkung, z.B. eine Umlenkwalze, geführt sind. Ferner kann die Spanneinrichtung (4) entfallen oder in anderer Weise ausgebildet sein, wobei sie z.B. nur einen einzelnen Hilfs- oder Spannwagen aufweist. Ferner kann die Führung der Legebänder (6,7) in anderer Weise ausgebildet sein, wobei z.B. ein oder mehrere zusätzliche Stützwagen angeordnet sind. Das Gegenband (7) kann zur Bildung einer geschlossenen Florzuführung bis zur Eingangsseite des Vliesleger (1) verlegt sein und den Faserflor (9) auf dem Zuführband (6) abdecken. Solche Abwandlungen der Bauform des gezeigten Vlieslegers (1) können z.B. gemäß der EP 1 010 785 , der EP 1 010 786 oder der EP 1 010 787 ausgebildet sein.The fleece layer (1) can for example be designed as a counter-rotating layer, in which the main carriages (2,3) move in opposite directions and the laying belts (6,7) running parallel in the guide area (34) between the two main carriages (2,3 ) are guided over a fixed deflection, eg a deflection roller. Furthermore, the clamping device (4) can be omitted or designed in a different way, for example only has a single auxiliary or tensioning carriage. Furthermore, the guide of the laying belts (6, 7) can be designed in a different way, with one or more additional support carriages being arranged, for example. To form a closed pile feed, the counter belt (7) can be laid as far as the entry side of the fleece layer (1) and cover the fiber pile (9) on the feed belt (6). Such modifications of the design of the web layer shown (1) can, for example, according to FIG EP 1 010 785 , the EP 1 010 786 or the EP 1 010 787 be trained.

Die Legebänder (6,7) bestehen im gezeigten Ausführungsbeispiel aus zugfesten und biegeelastischen Kunststoffbahnen. Sie können alternativ aus anderen Materialien bestehen und z.B. als Ketten- oder Lattenbänder ausgebildet sein. Variationen sind auch hinsichtlich der Antriebstechnik möglich. Die Hauptwagen (2,3) können einen gemeinsamen Antrieb für ihre Fahrbewegungen aufweisen und können untereinander mechanisch durch ein Seil oder dergleichen gekoppelt sein.In the exemplary embodiment shown, the laying strips (6, 7) consist of high-tensile and flexurally elastic plastic sheets. They can alternatively consist of other materials and e.g. be designed as chain or slat belts. Variations are also possible with regard to the drive technology. The main carriages (2, 3) can have a common drive for their travel movements and can be mechanically coupled to one another by a cable or the like.

Der Vliesleger (1) weist eine bevorzugt programmierbare Steuerung (nicht dargestellt) auf, an die die verschiedenen Antriebe der Hauptwagen (2,3), der Legebänder (6,7) und der Abzugeinrichtung (8) sowie evtl. weiterer Komponenten, z.B. einer im Einlaufbereich angeordneten Streckeinrichtung, angeschlossen sind. Diese Steuerung kann in eine übergeordnete Anlagensteuerung angebunden oder in diese integriert sein.The fleece layer (1) has a preferably programmable control (not shown) to which the various drives of the main carriages (2,3), the laying belts (6,7) and the take-off device (8) as well as any other components, e.g. a stretching device arranged in the inlet area. This control can be connected to a higher-level system control or integrated into it.

Eine Bandumlenkung (12) der gezeigten Art mit mehreren Umlenkstellen für mindestens ein Legeband (6,7) kann auch an anderen Stellen eines Vlieslegers (1) oder Kreuzlegers vorhanden sein, z.B. am Legewagen (3) oder an einer stationären 180°-Bandumlenkung im Gestell des Vlieslegers (1) .A belt deflection (12) of the type shown with several deflection points for at least one laying belt (6, 7) can also be present at other points of a fleece layer (1) or compensating stacker, for example on the laying carriage (3) or on a stationary 180 ° belt deflection in the Frame of the fleece layer (1).

BEZUGSZEICHENLISTEREFERENCE LIST

11
VlieslegerFleece layer
22
Hauptwagen, OberwagenMain carriage, superstructure
33
Hauptwagen, LegewagenMain carriage, laying carriage
44th
Spanneinrichtung, HilfswagenanordnungClamping device, auxiliary carriage arrangement
55
KoppelungCoupling
66
Legeband, ZuführbandLaying belt, feed belt
77th
Legeband, GegenbandLaying tape, counter tape
88th
Abzugeinrichtung, AbzugsbandPull-off device, pull-off belt
99
FaserflorFiber pile
1010
Vliesfleece
1111
ZuführrichtungFeed direction
1212
BandumlenkungBelt deflection
1313th
ObertrumUpper run
1414th
UntertrumLower run
1515th
Umlenkstelle, Umlenkrolle, ZuführbandDeflection point, deflection roller, feed belt
1616
Umlenkstelle, Umlenkrolle, ZuführbandDeflection point, deflection roller, feed belt
1717th
Umlenkstelle, Umlenkrolle, ZuführbandDeflection point, deflection roller, feed belt
1818th
Umlenkrolle, GegenbandDeflection roller, counter belt
1919th
Umlenkrolle, GegenbandDeflection roller, counter belt
2020th
Umlenkrolle, GegenbandDeflection roller, counter belt
2121st
Umlenkrolle, GegenbandDeflection roller, counter belt
2222nd
Bandabschnitt, ZuführbandBelt section, feed belt
2323
Bandabschnitt, ZuführbandBelt section, feed belt
2424
Bandabschnitt, GegenbandBelt section, counter belt
2525th
Bandabschnitt, GegenbandBelt section, counter belt
2626th
BandschlaufeTape loop
2727
StützrolleSupport roller
2828
FlorführungPile guide
2929
Führungsabschnitt offen, TrichterGuide section open, funnel
3030th
Führungsabschnitt, KlemmabschnittGuide section, clamping section
3131
Laufwerkdrive
3232
EinlassstelleInlet point
3333
AuslassstelleOutlet point
3434
FlorführungsbereichPile guide area
3535
EingangsseiteEntry page
αα
UmlenkwinkelDeflection angle
ββ
UmlenkwinkelDeflection angle
γγ
UmlenkwinkelDeflection angle

Claims (15)

  1. Non-woven fabric laying unit having an upper carriage (2) and a laying carriage (3), as well as two continuous laying belts (6, 7) which are in each case guided by way of deflection rollers (15 - 21) on the upper carriage (2) and on the laying carriage (3), wherein the one laying belt (6) is configured as an infeed belt which carries a fibrous web (9) and feeds the latter to the upper carriage (2), and the upper carriage (2) has a belt deflection (12) for both laying belts (6, 7), wherein at the belt deflection (12) the one laying belt (6) from the infeed direction (11) thereof is deflected by approx. 180° to the opposite direction, characterized in that the belt deflection (12) has three or more deflection points (15, 16, 17) for the one laying belt (6), wherein the one laying belt (6) at the three or more deflection points (15, 16, 17) has in each case a deflection angle α, β, γ of less than 90°.
  2. Non-woven fabric laying unit according to Claim 1, characterized in that the one laying belt (6) at the belt deflection (12) has two or more straight belt portions (22, 23) having dissimilar orientations, wherein the straight belt portions (22, 23) are disposed between the deflection points (15, 16, 17), in particular deflection rollers.
  3. Non-woven fabric laying unit according to Claim 2, characterized in that, in the infeed direction (11), the first belt portion (22) in the infeed direction (11) is directed obliquely downwards, and the second or last belt portion (23) counter to the infeed direction (11) is directed obliquely downwards.
  4. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the first deflection angle α and the last, in particular third, deflection angle γ are in each case larger than the central, in particular second, deflection angle β.
  5. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the first deflection angle α is between 55° and 70°, preferably approx. 63°, the second deflection angle β is between 40° and 55°, preferably approx. 46°, and the third and last deflection angle γ is between 65° and 75°, preferably approx. 71°.
  6. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the belt deflection (12) for the other laying belt (7) has three or more deflection rollers (18 - 21), wherein the other laying belt (7) at the belt deflection (12) has two or more straight belt portions (24, 25) having dissimilar orientations.
  7. Non-woven fabric laying unit according to Claim 6, characterized in that three deflection rollers (18, 19, 20) of the other laying belt (7) are disposed so as to be spaced apart on top of one another, wherein, when viewed in the inlet direction of the other laying belt (7) to the upper carriage (2), the first deflection roller (18) lies in front of the central deflection roller (19) and the latter again lies in front of the lower deflection roller (20) .
  8. Non-woven fabric laying unit according to one of Claims 2 to 7, characterized in that the upper or first straight belt portions (22, 24) of both laying belts (6, 7) have dissimilar orientations and converge in an oblique manner, wherein the second or last straight belt portions (23, 25) of both laying belts (6, 7) are closely adjacent and are directed in a substantially identical manner.
  9. Non-woven fabric laying unit according to Claim 8, characterized in that the second or last straight belt portions (23, 25) of both laying belts (6, 7) run in a mutually parallel manner or converge in a conical manner at an acute angle.
  10. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the upper carriage (2) at the belt deflection (12) has a web guide (28) having a plurality of portions (29, 30) in which the fibrous web (9) is first guided on one side and thereafter guided on both sides.
  11. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the upper carriage (2) and the laying carriage (3) are disposed so as to be movable in a mutually parallel manner and are independently driven and controlled, wherein the non-woven fabric laying unit (1) has controlled belt drives for driving the laying belts (6, 7) in a revolving manner.
  12. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the non-woven fabric laying unit (1) for the laying belts (6, 7) has a tensioning installation (4), in particular having an auxiliary carriage assembly, which is coupled to the upper carriage (2) and the laying carriage (3).
  13. Non-woven fabric laying unit according to one of the preceding claims, characterized in that the laying belts (6, 7), in the region between the upper carriage (2) and the laying carriage (3), in a single straight portion are guided in parallel, jamming the fibrous web (9) between said laying belts (6, 7).
  14. Fibre handling plant having a non-woven fabric laying unit according to one of the preceding claims, characterized in that the non-woven fabric laying unit (1) is downstream of a web-forming installation, in particular a worsted card or a woollen card, and is upstream of a non-woven fabric consolidation installation, in particular a needle machine or a water-jet consolidation plant or a thermal consolidation installation.
  15. Method for laying a multiple-ply non-woven fabric (10) by a non-woven fabric laying unit (1) which has an upper carriage (2) and a laying carriage (3), as well as two continuous laying belts (6, 7) which are guided by way of deflection rollers (15 - 21) on the upper carriage (2) and on the laying carriage (3), wherein the one laying belt (6), configured as an infeed belt, carries a fibrous web (9) and feeds the latter to the upper carriage (2), and the upper carriage (2) has a belt deflection (12) for both laying belts (6, 7), wherein at the belt deflection (12) the one laying belt (6) from the infeed direction (11) thereof is deflected by approx. 180° to the opposite direction, characterized in that the one laying belt (6) at the belt deflection (12) is deflected at three or more deflection points (15, 16, 17), wherein the one laying belt (6) at the three or more deflection points (15, 16, 17) has in each case a deflection angle α, β, γ of less than 90°.
EP18193837.4A 2012-07-13 2013-07-12 Nonwoven fabric layer and nonwoven fabric laying method Active EP3447175B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202012102597U DE202012102597U1 (en) 2012-07-13 2012-07-13 lapper
PCT/EP2013/064781 WO2014009520A1 (en) 2012-07-13 2013-07-12 Cross-lapper
EP13742410.7A EP2872682B1 (en) 2012-07-13 2013-07-12 Cross-lapper

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP13742410.7A Division EP2872682B1 (en) 2012-07-13 2013-07-12 Cross-lapper

Publications (2)

Publication Number Publication Date
EP3447175A1 EP3447175A1 (en) 2019-02-27
EP3447175B1 true EP3447175B1 (en) 2020-11-18

Family

ID=48900951

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18193837.4A Active EP3447175B1 (en) 2012-07-13 2013-07-12 Nonwoven fabric layer and nonwoven fabric laying method
EP13742410.7A Active EP2872682B1 (en) 2012-07-13 2013-07-12 Cross-lapper

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13742410.7A Active EP2872682B1 (en) 2012-07-13 2013-07-12 Cross-lapper

Country Status (5)

Country Link
US (1) US9909236B2 (en)
EP (2) EP3447175B1 (en)
CN (1) CN104583477B (en)
DE (1) DE202012102597U1 (en)
WO (1) WO2014009520A1 (en)

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Also Published As

Publication number Publication date
US20150176159A1 (en) 2015-06-25
CN104583477A (en) 2015-04-29
EP2872682A1 (en) 2015-05-20
CN104583477B (en) 2017-03-15
EP2872682B1 (en) 2018-09-12
DE202012102597U1 (en) 2013-10-14
WO2014009520A1 (en) 2014-01-16
EP3447175A1 (en) 2019-02-27
US9909236B2 (en) 2018-03-06

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