EP2695984B1 - Dispositif de formation d'un tissu non-tissé ou d'un matelas de fibres floquées - Google Patents

Dispositif de formation d'un tissu non-tissé ou d'un matelas de fibres floquées Download PDF

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Publication number
EP2695984B1
EP2695984B1 EP12199629.2A EP12199629A EP2695984B1 EP 2695984 B1 EP2695984 B1 EP 2695984B1 EP 12199629 A EP12199629 A EP 12199629A EP 2695984 B1 EP2695984 B1 EP 2695984B1
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EP
European Patent Office
Prior art keywords
fleece
flocked
fibre mat
forming
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP12199629.2A
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German (de)
English (en)
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EP2695984A1 (fr
Inventor
Johann Philipp Dilo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oskar Dilo Maschinenfabrik KG
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Oskar Dilo Maschinenfabrik KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Priority to EP12199629.2A priority Critical patent/EP2695984B1/fr
Priority to EP20130170105 priority patent/EP2695980A1/fr
Priority to CN201310337279.8A priority patent/CN103572506A/zh
Priority to US13/959,985 priority patent/US20140033479A1/en
Publication of EP2695984A1 publication Critical patent/EP2695984A1/fr
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Publication of EP2695984B1 publication Critical patent/EP2695984B1/fr
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/12—Moulding of mats from fibres
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
    • D01G23/045—Hoppers; Delivery shoots with means for controlling the feed by successive weighing; Weighing hoppers
    • 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
    • D04H11/00—Non-woven pile fabrics
    • D04H11/08—Non-woven pile fabrics formed by creation of a pile on at least one surface of a non-woven fabric without addition of pile-forming material, e.g. by needling, by differential shrinking

Definitions

  • the invention relates to a device and a method for forming a nonwoven or a fiber flake mat.
  • fiber flakes are delivered from a fiber flake feeder to a transport device, which directly in the form of a fiber flake mat in a first alternative to a pile producer, preferably a carding machine, in a second alternative directly to an aerodynamic web forming agent, or in a third alternative to a solidifying machine, such as a needle machine, further transported.
  • a transport device which directly in the form of a fiber flake mat in a first alternative to a pile producer, preferably a carding machine, in a second alternative directly to an aerodynamic web forming agent, or in a third alternative to a solidifying machine, such as a needle machine, further transported.
  • orientation of the fibers within the fiber flake mat or web affects the material properties and processing characteristics of the fiber flake mat or web.
  • the present invention has for its object to provide a device for forming a nonwoven or a Faserflockenmatte, can be generated with the targeted selectively different fiber orientations in the fiber flake or in the fleece.
  • the device for forming a nonwoven or a fiber flake mat comprises two sequential feeding devices for feeding dissolved fibers or fiber flakes onto a transport device, which serves for further transport of the formed web or fiber flake mat in a transport direction, wherein one of the feed devices in a direction transverse to Transport direction and has a width which corresponds to a maximum width of the web to be laid or the Faserflockenmatte.
  • the other of the feeders is a traveling feeder, which extends in the transport direction of the transport device and can be moved transversely to this transport direction over the maximum width and above the nonwoven to be laid or the fiber flake mat.
  • the movable feeding device has a plurality of feed segments which are arranged in the transport direction of the transport device and are arranged horizontally next to one another and which can be actuated separately from one another. In this way, the spatial resolution of the feed of substantially transverse oriented fibers is increased.
  • each feed segment has a width of between 5 and 100 mm, preferably between 15 and 30 mm, more preferably between 20 and 25 mm.
  • the movable feed device preferably has a plurality of rollers of the same type, arranged side by side in the transport direction of the transport device, which can be controlled separately from one another. Each roller is assigned to a feed segment.
  • the eligible rollers are, for example, feed rollers or discharge rollers.
  • several different types of rollers may be arranged in the traveling feeder in segmented form, i. a feed segment may have a plurality of different rollers corresponding to its width.
  • Other guide elements can also be present individually per feed segment. On the other hand, certain elements can also exist only once over the entire movable feed device and simultaneously affect all feed segments.
  • the movable feed device may have a fiber flute shaft as a material reservoir. It is advantageous if each feed segment one of several, in the transport direction of the transport device juxtaposed Austragsdosierwalzen is assigned, which are arranged at the lower end of the fiber flake shaft and can be controlled separately.
  • each feeder segment may be associated with a dispenser for storing and dispensing a roving or a nonwoven strip. In this way, a high spatial resolution is achieved even when feeding the dosing in the movable feeder.
  • each feed segment is associated with a driven with a servomotor, rotating in a rotational direction feed roller which subtracts the provided by the dispenser fiber roving or the fiber fleece strip.
  • a separate servo motor for each pickup roller ensures the independent control of each feed roller and thus a highly accurate delivery of fiber material by means of individually controlled Zu Kunststoffsegmente.
  • a storage roll is disposed between the dispensing device and the pickup roll of each feed segment, extending in the transport direction and horizontally across all the feed segments and wrapped around the one turn of each roving or nonwoven strip provided by the dispensing device.
  • the feed rollers do not have to remove the replacement fiber material directly from the dispenser, but can do so at a fixed location on the storage roller.
  • a measuring device arranged between the feed devices for measuring the basis weight of the fleece or the fiber fleece mat is provided across its transverse width to the transport direction in a measuring range of the transport device for determining a transverse profile and longitudinal profile of the fleece or the Faserflockenmatte, and also is a control or control device, which is designed to control the further downstream arranged of the two feeders based on the results of the measuring device such that the farther downstream of the two feeders to equalize the fleece or the Faserflockenmatte dissolved fibers or fiber flakes on determined thin points of the Fleece or the Faserflockenmatte feeding, or that the farther downstream of the two feeders to form a desired non-uniform cross-sectional profile and / or Län Gsprofils the fleece or the Faserflockenmatte targeted with thin spots and thick spots dissolved fibers or fiber flakes.
  • the accuracy in the production of the fiber flake mat or the fleece is further increased.
  • the feed device which extends in a direction transverse to the transport direction of the transport device, an alignment device for orienting a plurality of the output from the feeder fibers substantially in the transport direction of the transport device, so for enhancing the longitudinal orientation of the fibers have.
  • the movable feed device can have an alignment device for orienting a plurality of the fibers emitted by the movable feed device substantially transversely to the transport direction of the transport device, ie for enhancing the transverse orientation of the fibers.
  • the alignment device can each be, for example, a stretching device.
  • Fig. 1a and 1b an embodiment of the device according to the invention for forming a uniformized or profiled fiber flake mat is shown.
  • the device comprises a first feeding device 2, which is designed here as a fiber flake feeder. Behind the device, the fiber flake mat produced is fed to the catchment area of a pile generator 3, in particular a carding machine. Similarly, the fiber fluff mat 12 produced may be directly exposed to an aerodynamic web former (not shown) or a consolidation machine 50 (see FIG Fig. 4 and 5 ).
  • the first feeding device 2 is stationary and delivers fiber flakes to a discharge belt 4, which is formed circumferentially and about a plurality of guide rollers 6, of which only one is shown in the drawing, is stretched.
  • an upper roller 8 may be arranged in the output region of the first feeder 2, which is driven in opposite directions to the discharge belt 4 and thus moves together with the discharge belt 4, the fiber flake mat in the direction of a circulating conveyor belt 10 forward and compacted.
  • the discharge conveyor 4 and the conveyor belt 10 together form a transport device which ensures the further transport of the fiber flake mat 12.
  • the transport device 4, 10 connects the first feeding device 2 and the pile generator 3. It is also conceivable that the conveyor belt 10 directly below the first feeding device 2 extends (see the other figures) and thus the discharge belt 4 is omitted, or that the transport device has other than the sections and elements 4, 10 shown.
  • the fiber flake material is advanced as a fiber flake mat 12 with a variable speed v in the direction of the catchment area of the pile generator 3 and thus in the transport direction.
  • the conveyor belt 10 can also have a belt scale which determines an average weight of the fiber flake mat 12 in a flat weighing area, which has a certain length and extends over the entire width of the fiber flake mat 12.
  • the transport speed v of the transport device and thus at the same time the intake speed of the pile generator 3 can be controlled accordingly so that always a substantially uniform mass flow of fiber flake material reaches the pile generator 3 per time interval.
  • a measuring device 14 may be provided which measures the surface weight of the fiber flake mat 12 over its width extending transversely to the transport direction in a measuring range of the transport device 4, 10, thus the transverse profile and, due to the movement of the transport device 4, 10, also the longitudinal profile of the fiber flake mat 12 , in particular thin areas and / or thick places of the fiber flake mat 12, to be determined.
  • the measuring device 14 has several measuring segments transversely to the transport direction of the fiber flake mat 12 and carries out its own measurement in each measuring segment. In this way, thin spots or thick places can be determined two-dimensionally, ie in the longitudinal and in the transverse direction.
  • the width of such a measuring segment is between 5 and 100 mm, preferably between 15 and 30 mm, more preferably between 20 and 25 mm.
  • Such a measuring device 14 can either be used in addition to the belt scale or take over their function.
  • the measuring device 14 is designed as a series of transversely to the transport direction of the fiber flake mat 12 and measuring wheels 16 arranged horizontally next to each other. In the illustrated lateral cross-sectional view thereof only a measuring wheel 16 can be seen.
  • Each of these measuring wheels 16 is deflected independently of the other and connected to a corresponding evaluation device 18, which detects the deflection of the associated measuring wheel 16, which is due to the different thickness or the different basis weight of the fiber flake mat 12.
  • position sensors for measuring the height of the measuring wheels 16 or their carriers or rotary angle meters for determining the angle of rotation of the measuring wheels 16 or their carriers come into consideration as the evaluation device 18. This can be concluded in the associated measuring segment on the respective basis weight of the fiber flake mat 12.
  • the measuring device 14 may also be configured as another form of a mechanical measuring device. It is also possible to design the measuring device 14 as a radiometric measuring device. In this case, a radiometric measuring probe is arranged either in each measuring segment, which determines the surface weight of the fiber flake mat 12 in the respective measuring segment by means of radiometric measurements, or a single radiometric measuring probe is provided which can be moved transversely across the width of the fiber flake mat 12 and continuously or in certain measuring distances, the basis weight of the fiber flake mat 12 receives. Likewise, a combined use of both a radiometric and a mechanical measuring device 14 is possible.
  • the results of the measuring device 14 are transmitted to a control or regulating device 20 which controls a second feeding device 22 or profile changing device on the basis of the results of the measuring device 14.
  • the second feed device 22 is arranged in a profile change region of the transport device 4, 10 downstream of the measuring range.
  • the control or regulating device 20 controls the profile changing device 22 such that the second feeding device 22 feeds either dissolved fibers or fiber flakes onto the determined thin spots of the fiber flake mat 12, either to homogenize the fiber flake mat 12, and / or second feeding device 22 to selectively form a desired uneven transverse profile and / or longitudinal profile of the fiber flake mat 12 with thin spots and thick spots dissolved fibers or fiber flakes.
  • the second feed device 22 extends in the transport direction of the conveyor belt 10 and is transverse to this transport direction over the maximum width and above the web to be laid 78 or the Faserflockenmatte 12 movable.
  • the controlled feeding of dissolved fibers or fiber flakes can be effected by separate control of a plurality of feed segments of the feed device 22 arranged in the transport direction and horizontally adjacent to each other.
  • the width of such a feed segment is in the range of between 5 and 100 mm, preferably between 15 and 30 mm, more preferably between 20 and 25 mm. But it can also be provided only a single feed segment.
  • each feeder segment is associated with a dispenser 24 for storing and dispensing a roving 26 or a nonwoven strip.
  • the dispensing device 24 is designed as a coil, but it can also be designed as a spinning can or the like.
  • the roving 26 or the nonwoven strip extends from the dispenser 24 to a preferably rubberized storage roll 28 which extends in the transport direction and horizontally, preferably across all feed segments, and one turn of each roving 26 or each nonwoven strip provided by the dispenser 24 is juxtaposed about the storage roll 28 wound.
  • the storage roller 28 is driven in one direction of rotation (see the corresponding arrow in the drawing), preferably by means of a servomotor 30 and also preferably continuously at a relatively slow speed. In certain embodiments, the storage roller 28 may also be omitted. All of these elements, which form the material reservoir, can be moved with the feeding device 22. However, only the feeder 22 including the feed roller 32 can be moved transversely while the dispenser 24 remains stationary. If present, the storage roller 28 can either be moved with the feeder 22 or remain stationary. Corresponding slack storage between said elements then provide the necessary material buffer for the transverse travel of the feeder 22nd
  • Fig. 1b illustrated preferred embodiment is an integral storage roller 28 which simultaneously receives the different strands of the roving 26 and the nonwoven strip of all feed segments side by side. Likewise, however, there may be a separate storage roller per feed segment.
  • Each feed segment is also associated with a driven with a servo motor 34, also in the same direction of rotation rotating feed roller 32 assigned.
  • the feed roller 32 pulls the respective provided by the associated dispenser 24 roving 26 or the nonwoven strip, either with the interposition of the storage roller 28 or directly.
  • each feed segment has its own feed roller 32, only one feed roller 32 can be seen due to the series arrangement in the drawing.
  • Each feed roller 32 preferably has a clothing with respect to the direction of rotation rearwardly projecting teeth.
  • a particular advantage of the interposition of the storage roller 28 is that the storage roller 28 slips under those fiber ends 26 or non-woven fabric strips, which are only loosely wound around them. This applies accordingly to all Zupublishedsegmente in which the feed roller 32 is not driven at all or slower than the storage roller 28. Only when a feed roller 32 runs faster than the storage roller 28, the corresponding winding of the roving 26 or the nonwoven strip to the Storage roller 28 pulled tight and retracted the material accordingly.
  • the feed rollers 32 may have all possible speed profiles, including a plateau profile (e.g., in the form of a truncated pyramid) with equal but different length plateaus, depending on the desired output of fiber material.
  • a plateau profile e.g., in the form of a truncated pyramid
  • ⁇ ffnerwalze 36 which is preferably integrally formed and extending transversely to the transport direction and horizontally across all Zupublishedsegmente. Likewise, however, there may be a separate opening roll per feed segment.
  • the opener roller 36 is driven in the illustrated example in the same direction as the feed rollers 32.
  • the opener roller 36 preferably has a set with respect to the direction of rotation protruding teeth, whereby the twisted or compacted fiber flake material of the roving 26 and the nonwoven strip opens particularly well, so that loose fiber flakes or even fine fibers are peeled off. These fall into a corresponding discharge chute 38 and from there guided on the fiber flake mat 12. It can also be several discharge shafts 38 side by side provided for the different Zucommendedsegmente.
  • a cleaning roller 40 can still be arranged in the region of the dispensing shaft 38, which strips off the fiber flakes adhering to the teeth of the opening roller 36.
  • the centers of the feed rollers 32 and the ⁇ ffnerwalze 36 are arranged on a horizontal line. In addition to the arrangement shown but are still many design options.
  • the result obtained by the feeding device 22 can be checked further downstream by means of a second measuring device 42.
  • the second measuring device 42 may be designed in the same way as the measuring device 14, that is, it may have, for example, a plurality of measuring wheels 44 and a plurality of evaluation devices 46.
  • control or regulating device 20 In the operation of the feed device 22, the control or regulating device 20 must therefore in addition to the local arrangement of the measuring segments or the Zuditesegmente and the respective measurement data and the distance a between measuring range and profile change range and the respective speed v of the transport device, here the conveyor belt 10, for Consider control.
  • the respective feed roller 32 of the associated feed segment is then driven at the right time at a certain speed and supplies additional fiber or fiber flake material to the opener roller 36, which then reaches the proper location of the fiber flake mat 12 at the desired dosage.
  • various flute shafts may be provided, which correspond to the number of feed segments and are fed selectively with loose fiber flakes (for example, branched off before the fiber flake feeder 2).
  • the transversely movable feed device 22 is designed as a fiber flake feeder.
  • This Faserflockenspeiser can be any commercially available Faserflockenspeiser, but has at its lower end a plurality of longitudinally in the transport direction and horizontally juxtaposed ZuInstitutsegmente, which are controlled separately from the control or regulating device 20 from each other.
  • Each feed segment is assigned one of a plurality of juxtaposed discharge metering rollers 52, which can be controlled separately from one another by the control or regulating device 20.
  • the width of the feed segments which essentially corresponds to the width of the discharge metering rollers 52, is again preferably between 5 mm and 100 mm, more preferably between 15 and 30 mm, even more preferably between 20 and 25 mm.
  • the filling of the feeder device 22 with fiber flake material takes place via a preferably movable feed tube 54.
  • the Austragsdosierwalzen 52 now give based on the measurement results of the measuring device 14 or on the basis of a preset program each fiber flake material at the desired locations of the fiber flake mat 12.
  • Each Austragsdosierwalze 52 is for this purpose connected to its own servo motor 62.
  • each feed segment opposite the respective discharge metering roller 52 may be associated with one of a plurality of juxtaposed pedal recesses (not shown) whose deflection is detected by a sensor (not shown) to detect the actual delivery amount of the fiber flake material in each delivery segment.
  • a sensor not shown
  • Other types of detectors may also be used which measure the basis weight of the fiber flake material actually delivered by the feeder 22.
  • Fig. 3 and 4 illustrated embodiment of the feeding device is similar to the embodiment of Fig. 2 but has, in addition to the plurality of Austragsdosierwalzen 52 in the same direction of rotation as the Austragsdosierwalzen 52 driven opener roller 72 which serves to further open the fed by the Austragsdosierwalzen 52 by the trough 73 fiber flake material and scattered onto the conveyor belt 10.
  • a cleaning roller 74 may be present for stripping fibers remaining on the clothing of opener roller 72.
  • the movable feed device 22 is movable transversely to the transport direction of the conveyor belt 10 and over the maximum width and above the fiber flake mat 12 to be laid, see the arrows in FIG Fig. 4 ,
  • the movable feed device 22 either has a moving material reservoir, or that the feed tube 54 for the profile changing device 22 is correspondingly extensible or extensible to miter the lateral deflections of the feeder 22.
  • FIG. 5 shown apparatus for forming a fiber flake mat corresponds to the embodiment of Fig. 4 , wherein between the first feeding device 2 and the second feeding device 22 still another, designed as a fiber flake feeder feeder 82 is arranged, which also represents a profile changing device with individual feed segments.
  • the preferably present control or regulating device 20 has not been shown in the drawing for reasons of clarity. However, it is clear that not only the transversely movable feed device 22, but preferably also the Faserflockenspeiser 82 can be controlled by the control or regulating device 22.
  • FIG. 6 to 10 Further embodiments of movable feeders 22 for use in the apparatus according to the invention for forming a fleece or a fiber flake mat are shown.
  • the feeding device 22 is designed as a web forming device.
  • the feed device 22 has a plurality of axially adjacent feed rollers 202, one of which is assigned to a feed segment of the feed device 22.
  • the width of the individual feed segments is preferably identical to the width in the previous examples.
  • Each feed roller 202 is driven by its own servo motor 204. In the illustrated rear cross-sectional view, only a feed roller 202 and a servomotor 204 can be seen.
  • the fiber material is drawn in the direction of arrow B by the feed rollers 202 in a controlled manner and thus passes under the overhead trough 206 therethrough.
  • the fiber material fed in the direction of arrow B can be drawn in directly from a fiber flute shaft.
  • the fiber material is supplied in the form of fiber slivers 26 or nonwoven strips, for example by means of in Fig. 1b shown elements for feeding the roving 26 or the nonwoven strip to the feed rollers 32 shown there. While in the example of the Fig.
  • an overhead trough 206 is provided and the fiber material is fed from the feed rollers 202 obliquely from above into the space between feed rollers 202 and opening roller 208, this can, as in Fig. 1b shown, also at any time from diagonally down. Only the relative direction of rotation between the feed rollers 202 and the opener roller 208 would then be different, since the feed rollers 202 would then move in the same direction of rotation as the opener roller 208.
  • the opener roller 208 opens the fiber material of the roving 26 or the nonwoven strip or the fiber flakes coming from the shaft differently towards fiber flakes or even to single fibers, which subsequently fall down in the feeder 22.
  • corresponding guide elements 210 may be provided.
  • the fiber material dissolved per feed segment by the opener roller 208 finally reaches a gap between two screen rollers 212, which are preferably driven at the same speed but in the opposite direction.
  • These screen rollers 212 guide the fiber material in the feed device 22, for example, with the aid of a further trough 214, on the conveyor belt 10 or on the non-woven 78 or the fiber flake mat 12 already on the conveyor belt 10.
  • the distance and the relative height position of the two screen rollers 212 are variably adjustable.
  • the feeding device 22 shown can be combined at any time with any material dispensing device.
  • the fiber material is fed in the direction of arrow B by means of individually driven, over the width of the web to be laid 78 axially juxtaposed feed rollers 202 in the feeder 22.
  • the feed rollers 202 are in this case somewhat obliquely below the opener roller 208, and as a guide element 210, a perforated plate is provided in this case.
  • the two screen rollers 212 are again driven in opposite directions, wherein in the illustrated embodiment additionally suction devices 218 for sucking the screen rollers 212 are shown.
  • the conveyor belt 10 is designed in the illustrated embodiment as a screen belt, which may also be under-sucked by means of a suction device 120, so as to suck the stripped from the opener roller 208 fiber material to the desired region of the conveyor belt 10.
  • the left screen roller 212 is arranged closer to the conveyor belt 10, so that the lower trough 214 can be omitted.
  • Fig. 8 illustrated embodiment of the feeder 22 has in the catchment area (above the arrows which are to denote the falling fiber material) also a plurality of juxtaposed feed rollers 202 and a ⁇ ffnerwalze 208 (as in Fig. 6 or 7 ), which are not shown here anymore.
  • the counter-rotating screen rollers 212 are in the case of Fig. 8 partially entangled by screen belts 222, which are guided by the screen rollers 212 down and there are guided around a respective smaller guide roller 224.
  • the guide rollers 224 are arranged close to the surface of the conveyor belt 10 and define a discharge gap of the feed device 22.
  • the conveyor belt 10 is again designed as a screen belt.
  • the distance between the screen belts 222 is variable, as are the speeds V1 and V2 are adjustable separately.
  • the stretching apparatus in this case comprises an upper star roller 226 or garnished roller with a counter-pressure plate 228 opposite it, preferably spring-mounted, defining therebetween a first nip for the fiber material, and a lower star roller 230 or garnished roller and a lower, preferably resilient mounted, counter-pressure plate 232 which is opposite to the lower star roller 230 and defines with this a second nip.
  • the two star rollers 226 and 230 are arranged on opposite sides of the filling channel.
  • a stretching of the fiber material in the filling channel takes place when the rotational speed of the lower star roller 230 is higher than the rotational speed of the upper star roller 226.
  • stretching takes place a stronger expression of the orientation of the fibers in their conveying direction, so that finally on the conveyor belt 10 Material areas are stored with more oriented transversely to the transport direction of the conveyor belt 10 fibers.
  • Shape and arrangement of the elements for stretching can of course be varied in many ways here. For example, to define each nip also a pair of nip rollers (smooth, rubberized or garnished) or star roller pair can be used.
  • Feed rollers 202 shown are each provided with sets whose teeth are directed in the direction of rotation of the feed rollers 202 forward. It is also possible or even preferred that the teeth of the sets of feed rollers 202 are directed in the direction of rotation to the rear. It can also be used completely different trimmings.
  • the fiber material is introduced in this embodiment above the feed rollers 202 in the direction of arrow B and then conveyed by the opener roller 208, which runs in the same direction of rotation as the feed rollers 202, along the overhead trough 206.
  • the overhead trough 206 may also be configured in two parts. After a half turn of the opener roller 208, the fiber material drops into the discharge chute and finally passes between the screen rollers 212.
  • an air flow generator 250 can be used, which from the top generates an air flow at the top Opener roll 208 passes (aerodynamic web formation).
  • each feed roller 202 has been described as individually controllable, axially juxtaposed elements, each of which feed roller 202 is associated with a feed segment of the feeder 22. But there are many more elements of the Fig. 6 to 10 be shown segmented, ie juxtaposed and individually controllable present, each feed segment is assigned a respective segment of these elements. This applies, for example, to the screen rollers 212, the screen belts 222 or the star rollers 226, 230.
  • rollers, belts and troughs used and the relative geometric arrangement of the individual parts in the illustrated embodiments can be modified by the person skilled in the art to the respective intended use.
  • distance between the rollers and belts in the embodiments of Fig. 6 to 10 is not true to scale and also variably adjustable.
  • the described embodiments and the schematic sketches are intended to represent only the basic principle of the inventive idea.
  • fiber flake mats 12 or webs 78 with areas of different fiber orientation can be produced, because usually individual fibers are oriented in the direction of the rollers transporting them.
  • the fibers delivered by the transversely movable delivery device 22 will be substantially transversely oriented.
  • an alignment device for example in the form of a stretching device, is used in one or both feeders 2, 22.
  • the conveyor belt 20 is stationary when the transversely movable feed device 22 emits fiber material onto the conveyor belt 10. However, it can also slowly run forward, then there are one or more diagonal strips of fiber material.
  • the second feeder or a third feeder has always been described as a transversely movable feeder.
  • the first feed device can be designed as a transversely movable feed device in order to deposit cross-oriented fibers in the lowermost layer of the nonwoven to be laid or of the fiber flake mat.
  • I stands for a feeder, which emits primarily longitudinal fibers
  • q stands for a feeder, which is transversely movable and emits mainly transverse fibers: lq, ql, llq, qql, lql, qlq, qll, lqq and many more, even with more than three feeders.

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  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (14)

  1. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres, comprenant
    deux dispositifs d'alimentation (2, 22), montés l'un derrière l'autre, pour la distribution de fibres effilochées ou de flocons de fibres sur un dispositif de transport (4, 10), qui sert à l'acheminement du non-tissé formé (78) ou du mat de flocons de fibres (12) dans une direction de transport,
    l'un des dispositifs d'alimentation (2) s'étendant dans une direction transversale à la direction de transport du dispositif de transport (4, 10) et présentant une largeur, qui correspond à une largeur maximale du non-tissé (78) à déposer ou du mat de flocons de fibres (12),
    caractérisé en ce que
    l'autre dispositif d'alimentation (22) est un dispositif d'alimentation mobile, qui s'étend dans la direction de transport du dispositif de transport (4, 10) et peut se déplacer transversalement à cette direction de transport sur la largeur maximale et au-dessus du non-tissé (78) à déposer ou du mat de flocons de fibres (12).
  2. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 1, caractérisé en ce que le dispositif d'alimentation mobile (22) présente plusieurs segments d'alimentation disposés dans la direction de transport du dispositif de transport (4, 10) et juxtaposés horizontalement, lesquels segments peuvent être commandés séparément les uns des autres.
  3. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 2, caractérisé en ce que chaque segment d'alimentation du dispositif d'alimentation mobile (22) présente une largeur comprise entre 5 et 100 mm, de préférence entre 15 et 30 mm, plus préférentiellement entre 20 et 25 mm.
  4. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon l'une des revendications 2 et 3, caractérisé en ce que le dispositif d'alimentation mobile (22) présente plusieurs cylindres du même type (32, 52, 72, 202, 212), juxtaposés dans la direction de transport du dispositif de transport (4, 10) et qui peuvent être commandés séparément les uns des autres.
  5. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 2, caractérisé en ce que le dispositif d'alimentation mobile (22) présente une gaine de flocons de fibres en tant que réservoir de matériau.
  6. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon l'une des revendications 2 à 4, caractérisé en ce qu'un dispositif de distribution (24) est associé à chaque segment d'alimentation pour le stockage et la distribution d'une mèche de fibres (26) ou d'un ruban de non-tissé.
  7. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 6, caractérisé en ce qu'un cylindre d'entrée (32), tournant dans un sens de rotation et entraîné par un servomoteur (34), est associé à chaque segment d'alimentation, lequel cylindre d'entrée tire la mèche de fibres (26) ou le ruban de non-tissé du dispositif de distribution respectif (24).
  8. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 7, caractérisé en ce qu'un cylindre de stockage (28) est disposé entre le dispositif de distribution (24) et le cylindre d'entrée (32) de chaque segment d'alimentation, lequel cylindre de stockage s'étend dans la direction de transport et horizontalement sur tous les segments d'alimentation et est enroulé d'une spire de chaque mèche de fibres (26) ou de chaque ruban de non-tissé fournis par le dispositif de distribution (24).
  9. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 5, caractérisé en ce que l'un de plusieurs cylindres doseurs de décharge (52), juxtaposés dans la direction de transport du dispositif de transport (4, 10), est associé à chaque segment d'alimentation, lesquels cylindres sont disposés à l'extrémité inférieure de la gaine de flocons de fibres et peuvent être commandés séparément les uns des autres.
  10. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon l'une des revendications 2 à 9, caractérisé en ce qu'il présente un dispositif de mesure (14), disposé entre les dispositifs d'alimentation (2, 22), pour mesurer le grammage du non-tissé (78) ou du mat de flocons de fibres (12) sur la largeur de ce dernier transversale à la direction de transport, dans une plage de mesure du dispositif de transport (4, 10), en vue de déterminer un profil transversal et un profil longitudinal du non-tissé (78) ou du mat de flocons de fibres (12), et qu'il présente en outre un dispositif de commande ou de réglage (20) conçu pour contrôler le des deux dispositifs d'alimentation (22), disposé plus en aval, sur la base des résultats du dispositif de mesure (14), de telle sorte que le des deux dispositifs d'alimentation (22), disposé plus en aval, amène pour l'homogénéisation du non-tissé (78) ou du mat de flocons de fibres (12) des fibres effilochées ou des flocons de fibres sur des points minces déterminés du non-tissé (78) ou du mat de flocons de fibres (12), ou que le des deux dispositifs d'alimentation (22), disposé plus en aval, amène de façon rationnelle des fibres effilochées ou des flocons de fibres pour la formation d'un profil transversal et/ou d'un profil longitudinal irrégulier souhaité du non-tissé (78) ou du mat de flocons de fibres (12) avec des points minces et des points épais.
  11. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'alimentation (2, 22), qui s'étend dans une direction transversale à la direction de transport du dispositif de transport (4, 10), présente un dispositif d'orientation pour orienter essentiellement dans la direction de transport du dispositif de transport (4, 10) une pluralité des fibres distribuées par le dispositif d'alimentation (2, 22).
  12. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 11, caractérisé en ce que le dispositif d'orientation est un dispositif d'étirage.
  13. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'alimentation mobile (2, 22) présente un dispositif d'orientation pour orienter essentiellement dans la direction transversale à la direction de transport du dispositif de transport (10) une pluralité des fibres distribuées par le dispositif d'alimentation mobile (2, 22).
  14. Dispositif de formation d'un non-tissé ou d'un mat de flocons de fibres selon la revendication 13, caractérisé en ce que le dispositif d'orientation est un dispositif d'étirage.
EP12199629.2A 2012-08-06 2012-12-28 Dispositif de formation d'un tissu non-tissé ou d'un matelas de fibres floquées Active EP2695984B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12199629.2A EP2695984B1 (fr) 2012-08-06 2012-12-28 Dispositif de formation d'un tissu non-tissé ou d'un matelas de fibres floquées
EP20130170105 EP2695980A1 (fr) 2012-08-06 2013-05-31 Dispositif d'acheminement pour fibres ou flocons
CN201310337279.8A CN103572506A (zh) 2012-08-06 2013-08-05 用于纤维或纤维束的进给装置
US13/959,985 US20140033479A1 (en) 2012-08-06 2013-08-06 Feed Device for Fibers or Fiber Flocks

Applications Claiming Priority (2)

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EP12179382.2A EP2695982A1 (fr) 2012-08-06 2012-08-06 Dispositif et méthode pour égaliser ou obtenir un profil donné à un matelas de flocons de fibres
EP12199629.2A EP2695984B1 (fr) 2012-08-06 2012-12-28 Dispositif de formation d'un tissu non-tissé ou d'un matelas de fibres floquées

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EP2695984B1 true EP2695984B1 (fr) 2015-03-04

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EP12179382.2A Withdrawn EP2695982A1 (fr) 2012-08-06 2012-08-06 Dispositif et méthode pour égaliser ou obtenir un profil donné à un matelas de flocons de fibres
EP12199629.2A Active EP2695984B1 (fr) 2012-08-06 2012-12-28 Dispositif de formation d'un tissu non-tissé ou d'un matelas de fibres floquées
EP12199625.0A Active EP2695976B1 (fr) 2012-08-06 2012-12-28 Dispositif pour délivrer des fibres divisées ou des bourres de fibres sur un dispositif de transport
EP12199616.9A Active EP2695983B1 (fr) 2012-08-06 2012-12-28 Dispositif et procédé de formation d'un non-tissé profilé ou homogénéisé ou d'un matelas de fibres floquées profilé ou homogénéisé

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EP12199616.9A Active EP2695983B1 (fr) 2012-08-06 2012-12-28 Dispositif et procédé de formation d'un non-tissé profilé ou homogénéisé ou d'un matelas de fibres floquées profilé ou homogénéisé

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US20140033479A1 (en) 2014-02-06
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ES2534209T3 (es) 2015-04-20
EP2695984A1 (fr) 2014-02-12
EP2695983B1 (fr) 2015-12-23
CN103572511B (zh) 2017-04-12
US9187852B2 (en) 2015-11-17
CN103572511A (zh) 2014-02-12
EP2695983A1 (fr) 2014-02-12
EP2695976A1 (fr) 2014-02-12
US20140034399A1 (en) 2014-02-06
CN103572510A (zh) 2014-02-12
CN103572510B (zh) 2016-05-11
EP2695976B1 (fr) 2015-02-25
ES2560009T3 (es) 2016-02-17
US9003609B2 (en) 2015-04-14
CN103572506A (zh) 2014-02-12
US20140033480A1 (en) 2014-02-06

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