EP2893069B2 - Dispositif pour compenser des variations de vitesse de transport d'un non-tissé - Google Patents

Dispositif pour compenser des variations de vitesse de transport d'un non-tissé Download PDF

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Publication number
EP2893069B2
EP2893069B2 EP13770851.7A EP13770851A EP2893069B2 EP 2893069 B2 EP2893069 B2 EP 2893069B2 EP 13770851 A EP13770851 A EP 13770851A EP 2893069 B2 EP2893069 B2 EP 2893069B2
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EP
European Patent Office
Prior art keywords
belt
deflection
lead
compensating device
drive
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EP13770851.7A
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German (de)
English (en)
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EP2893069A1 (fr
EP2893069B1 (fr
Inventor
Steffen HARTUNG
Joachim BINNIG
Eberhard HÄBERLE
Andreas Meier
Rudolf Kuhn
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Hi Tech Textile Holding GmbH
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Hi Tech Textile Holding GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • 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
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/06—Advancing webs by friction band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/25—Driving or guiding arrangements
    • B65H2404/254—Arrangement for varying the guiding or transport length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B65H2404/2613—Means for changing the transport path, e.g. deforming, lengthening
    • 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
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to a compensating device, a plant for fiber processing and a compensating method with the features in the preamble of the independent method and device claims.
  • Such a compensation device for a nonwoven fabric is from EP 1 643 022 B1 known. It is arranged between a fleece layer and a needling machine and has an endless, revolving storage belt with two deflection rollers. The fiber fleece is arranged on the upper run of the storage belt and temporarily stored in a variable sag of the upper run if required. In this way, speed differences between the fleece layer and the needling machine can be compensated. The size of the sag and the fleece storage is determined by the speed differences of the drives on the deflection rollers.
  • the EP 2 175 056 A1 shows a fleece layer with a slack storage in its delivery conveyor belt.
  • the invention solves this problem with the features in the independent method and device claims.
  • the claimed balancing technique i.e. the balancing device and the balancing method, has the advantage of an improved ability to control and manipulate the sag and storage capacity of the storage tape.
  • the slack on the web-guiding belt strand and thus the web storage size can be calculated, set, controlled and regulated particularly reliably and precisely.
  • the claimed compensation device also has the advantage of an increased storage capacity compared to the prior art.
  • a lower run of the endless storage belt is tensioned downwards over four or more deflection points in a belt polygon, in particular a belt quadrilateral or belt pentagon, as a result of which the upper run guiding the fleece can drop far down to increase the sag.
  • the sag change can be greater than in the prior art.
  • strong accelerations perpendicular to the extent of the storage tape can be avoided.
  • a band square or band pentagon is also favorable for the safe and precise detection of the adjustment path of a deflection point and for the control and regulation precision.
  • the amount of sag can be controlled or regulated by speed differences of the drives on the discharge and feed side of the upper run with the support of a passive adjustment device, which tightens the other, in particular the lower belt run area by changing the location of at least one deflection point, in particular a deflection roller, and keeps it under tension.
  • the amount of sag is no longer mandatory and directly dependent on the speed differences of the drives on the outfeed and infeed side of the upper strand.
  • the size of the variable sag and the storage capacity determined thereby can also be influenced, controlled and regulated by the active adjusting device and a defined change in location of at least one deflection point, in particular a deflection roller.
  • the length of another strand of the belt is increased or reduced and the strand of the belt guiding the fleece, in particular the upper strand, is tightened or loosened accordingly. Due to this change in length of the fleece-guiding belt run, the sag is reduced or increased.
  • the form-fitting connection between the storage belt and at least one rotationally driven deflection roller is also advantageous for the various embodiments.
  • a targeted avoidance of slip, at least in some areas, is favorable for defined strip movements in the event of changes in sag and for control and regulation accuracy.
  • the compensation technique claimed is suitable for high conveying speeds of the fleece and for fast follow-up devices.
  • the increase in the storage and compensation capability as well as the control and regulation quality have a particularly advantageous effect on this.
  • the output speed of a fleece layer or other upstream device can be 40 m/min or more.
  • the subsequent device can, for example, be a consolidation device or another device for further processing of the web.
  • a bonding device can be designed, for example, as a needling machine, thermobonding device or as a particularly fast water jet bonding device (so-called spunlace). Overall, this can significantly increase the speed level of a fiber system and its components and thus also the performance and profitability.
  • the invention relates to a compensating device (1) for fluctuating conveying speeds of a fiber fleece (3), in particular for compensating for speed differences on the feed and discharge sides (26, 27) of the compensating device (1).
  • the invention also relates to a method for compensating for such fluctuating conveying speeds.
  • the compensating device (1) shown in different variants is arranged between an upstream device (4), e.g ) multi-layer fleece (3) coming from the fleece layer (4) via a delivery belt (6) to the consolidation device (5), possibly via an upstream feed belt (7).
  • the compensating device (1) compensates for the fluctuating web delivery speeds of the web layer (4) and in turn delivers the web (3) to the bonding device (5) at an adjustable and essentially constant speed.
  • the fleece (3) is a fiber fleece or nonwoven product. It consists of textile fibers, in particular synthetic fibers, and is formed in the fleece layer (4) by folding and paneling a single- or multi-layer pile.
  • the fleece (3) is multi-layered.
  • the compensating device (1) has an endless storage belt (2) circulating in a closed loop, which via three, four, five or more deflection points (12,13,14,15,16) forms a belt polygon, e.g. a belt quadrangle or belt pentagon , is stretched.
  • the deflection points (12,13,14,15,16) can be designed as rotatable, cylindrical deflection rollers.
  • the upper run (8) of the storage belt (2) is located between two upper deflection rollers (12,13).
  • the lower run (9) is in the variants from Figure 1 to 3 defined between two lower deflection rollers (14,15).
  • Side strands (9') of the storage belt (2) are located between the upper and lower deflection rollers (12, 13, 14, 15).
  • the upper strand (8) of the storage belt (2) picks up the web (3) and transports it in the conveying direction (10). This is also the circulating conveying direction of the storage belt (2).
  • the upper run (8) is guided over two upper deflection rollers (12,13) and between them forms a constant sag (11) of variable height (h1,h2).
  • the respective sag height (h1, h2) is measured from the lower apex of the respective belt loop or the sag (11) formed thereby to the upper common tangent to the deflection rollers (12,13), which corresponds to the theoretical upper strand position in the taut position.
  • the fleece (3) is preferably open and uncovered on the upper strand (8). Alternatively, it may be covered.
  • the upper strand (8) has a permanent sag with a minimum height (h1) and a maximum height (h2) indicated by dashed lines.
  • the sag height (h) determines the storage capacity of the compensation device (1).
  • the lower deflection points (14,15,16) are so far away from the upper deflection points (12,13) in height that they span the lower run (9) of the storage belt (2) far down and from the upper run (8) by more distance than the maximum height (h2) of the sag (11).
  • the delivery belt (6) of the fleece layer (4) transports the fleece (3) at a fluctuating conveying speed.
  • This can correspond to the speed profile of a lower main carriage or laying carriage of the fleece layer (4) which moves back and forth across the delivery belt (6) and brakes, stops and accelerates again at the edges of the laying width.
  • the laying carriage speed can also fluctuate when the layer (4) lays down a fleece (3) with a basis weight that varies over the laying width and possibly the run length on the delivery belt (so-called profiling). These speed fluctuations are reflected in the transport speed of the delivery belt (6) and the feed speed of the web (3) on the feed side (26) of the compensating device (1).
  • the web (3) is delivered to the supply belt (7) or to the bonding device (5) at a speed that can be controlled or regulated.
  • the delivery speed can be constant or vary within limits around a mean value, which is output as a guide value to the downstream device (5), e.g. a solidification device.
  • the speed differences between the feed and discharge sides (26, 27) are compensated and the web (3) is temporarily stored.
  • the fleece store formed by the variable sag heights (h1,h2) can be controlled or regulated.
  • the delivery speed of the compensating device (1) to the consolidation device (5) is between the maximum and minimum fleece delivery speed of the fleece layer (4) on the feed side (26) and is preferably dimensioned such that in a laying cycle of the fleece layer (4), e.g. a driving cycle of the laying carriage with a forward and a reverse drive, the web store formed in the slack (11) of the upper run (8) can be filled and emptied again.
  • the storage belt (2) has one or more drives or belt drives (17, 18) for its circulating movement.
  • a drive (18) is on the discharge side (27) upper deflection point or deflection roller (13) arranged.
  • the rotational speed of the storage tape (2) on the delivery side (27) via the deflection roller (13) can be adapted to the feed speed of the subsequent device (5), in particular the consolidation device or the feed tape (7). In order to keep the web (3) under constant slight tension, said feed speed can be somewhat higher than said delivery or circulation speed.
  • a drive (17) can also be arranged on the feed side (26) of the compensating device (1) at the upper deflection point or deflection roller (12) there.
  • the drives (17, 18) can be controllable and optionally adjustable drives which have suitable motor drive means, e.g. electric motors, in particular servomotors, and which are connected to a controller (23) of the balancing device (1).
  • the drive (17) on the feed side can be coupled to the delivery speed of the delivery belt (6) and have a slightly higher speed level for the aforementioned tension of the web. The coupling can take place using signals.
  • One or both belt drives (17, 18) can also be controlled, with appropriate sensors, e.g. speed sensors, being present at a suitable point.
  • the drive (17) can be formed by a mechanical drive coupling between the deflection roller (12) on the feed side and the adjacent deflection roller of the delivery belt (6).
  • a separate drive for the deflection roller (12) can be dispensed with, with the latter being carried along and rotated by the circulating movement of the storage belt.
  • the non-driven deflection rollers (14,15,16) or rollers can be freely rotatably mounted. They can have a cylindrical shell that is smooth on the outside.
  • the driven deflection rollers (12,13) can also have a cylindrical jacket that is smooth on the outside. You can transfer the driving force to the storage belt (2) by friction. This can also have a flat surface at least on the support side.
  • one or more driven deflection roller(s) (12, 13) have a cylindrical casing (31) profiled on the outside and drive the storage belt (2) in a form-fitting manner.
  • the profiling (31) can be, for example, a circumferential tooth or wave profile.
  • the storage tape (2) can have an uneven surface with a suitable counter-profiling (32), at least on the support side. It can, for example, be designed as a slatted belt.
  • a pressure roller (30) can be arranged above the discharge-side (27) upper deflection roller (13) for clamping the running-out web (3). It can be rotated synchronously with the deflection roller (13). It can also be arranged in a height-adjustable manner. figure 5 shows such a configuration.
  • the motors used as the drive (17, 18), in particular electric motors, can also have different designs and can be controlled or regulated. This can be, for example, a speed control or a torque control or a combination of both with a switchover option.
  • a drive (17, 18) can have a brake motor, which has an integrated brake, in particular a mechanical brake, which applies when the vehicle is at a standstill. It keeps the storage tape (2) in the stretched-out shape with slack (11) even after the tape drives (17, 18) have been switched off.
  • the height (h1, h2) of the slack (11) on the upper strand (8) of the storage belt (2) and the size of the fleece storage area formed as a result can be adjusted by a controlled or regulated change in location of at least one deflection point (14,15,16) in the area of the Lower run (9) or side run (9 ') are controlled or regulated.
  • the height (h1, h2) of the slack (11) and the web store formed thereby can be controlled by speed differences of the drives (17, 18).
  • the tape length in the area of the lower run (9) or side run (9') is changed, which is due to the finite storage tape length results in a compensating change in length of the upper run (8) and thus in its sag height (h1, h2).
  • An extension of the lower run (9) or side run (9') causes the upper run (8) to be shortened and the sag height (h) and the fleece store to be reduced.
  • a shortening of the lower run (9) or side run (9') leads to an extension of the upper run (8) and an increase in the sag height (h) and the fleece store. A part of the length of the storage belt is shifted between the upper run (8) and the lower or side run (9, 9').
  • This belt shift can be compensated for by adjusting the speed and, if necessary, elastic behavior of one or both belt drive(s) (17,18) on the upper run (8).
  • the change in speed can correlate with the varying output speed of the web layer (4). If differences occur, said elastic compensation can take place.
  • An adjusting device (19) is provided for changing the position of a deflection point or deflection roller (14, 15, 16), which has a corresponding guide for the adjustment movement of the deflection point or deflection roller (14, 15, 16).
  • the adjusting device (19) can be active or passive. In the active variant, it has an actuator (20, 21) for the adjustment movement of the deflection point or deflection roller, which can be designed in different ways. In the passive version, it has a tensioner (28, 29) to tighten the lower ligament area.
  • the actuating device (19) can also have the actuator (20,21) or in some other way, for example by means a clamping device on the guide, if necessary ensure that the deflection point or deflection roller (14,15,16) is locked in an operating or clamping position. This can happen, for example, when the compensating device (1) is switched off in order to fix the slack (11) and have it available when it is switched on again.
  • the actuating device (19), in particular its actuating drive (20, 21) or the locking or clamping device, is connected to the controller (23).
  • the detection device (22) for the adjustment path and, if necessary, the adjustment speed or acceleration of the mobile deflection point or deflection roller (14, 15, 16) can also be present. It can also be connected to the controller (23). With the adjustment movement of the deflection point or deflection roller (14,15,16), the distance to the other lower deflection point(s) or deflection roller(s) and thus the length of the lower run (9) is changed. The length of the upper strand (8) and the height (h1, h2) of its sag (11) change accordingly.
  • the change in height and the change in size of the fleece store can therefore be determined from the value detected by the detection device (22), in particular the adjustment path.
  • the controller (23) for regulating the sag height (h) and the size of the fleece store in adaptation to the varying fleece delivery of the fleece layer (4) can generate a possibly varying or dynamic desired value for the adjustment path, according to which the regulation of the belt drive(s) ( 17,18) and/or the actuator (20,21).
  • the position of the lower deflection point or deflection roller (15) on the feed side (26) is specifically adjusted to change the sag height (h).
  • both lower deflection points or deflection rollers (14,15) are in the starting position vertically below the respective associated upper deflection point or deflection roller (12,13), so that the two side strands (9') of the storage belt (2) have a substantially vertical alignment have.
  • the belt is deflected by approximately 90° or more.
  • the lower right deflection point or deflection roller (14) can be mounted stationary, with only the other deflection point or deflection roller (15) being changed in its position by means of the active adjusting device (19).
  • both deflection rollers (14, 15) can be mobile and have adjusting devices, or only the lower deflection point or deflection roller (14) on the discharge side (27) is changed in its position by an adjusting device, with the deflection point or deflection roller (15) on the infeed side being mounted stationary is.
  • the adjustment movement is a linear movement that is aligned horizontally or obliquely.
  • the actuator (20) is accordingly designed as a linear drive, for example as an electromotive spindle drive, rack and pinion drive, revolving belt drive, controllable cylinder or the like.
  • the actuator (20) is connected to the controller (23) and can be controlled and, if necessary, regulated by means of the detection device (22) to achieve the desired sag height (h).
  • a support (24) can be arranged below the, for example, horizontal area of the lower strand (9), which prevents this sliver strand area from sagging and contributes to a defined lower strand length.
  • the support (24) is designed as a flat support surface running parallel to the lower run (9).
  • the support can be designed as a clamping device.
  • the belt drive (18) on the delivery side is the master drive, which is regulated, for example, to a constant delivery speed and speed.
  • the drive (17) on the feed side is formed by a mechanical drive coupling between the deflection roller (12) on the feed side and the adjacent deflection roller of the delivery belt (6).
  • the belt displacement between the upper and lower strands caused by the actuator (20) during sag control usually correlates with the speed fluctuations on the delivery belt (6) transmitted by coupling, so that elastic compensation is not necessary.
  • figure 2 shows a variant of the compensating device (1), which differs from the embodiment of figure 1 by the adjusting device (19) and the feed-side drive (17).
  • a belt drive (17) for example an electric motor, which can be controlled or regulated and is signaled to the feed device (6) is arranged on the upper deflection roller (12) on the feed side (26).
  • the other belt drive (18) is the master drive and is regulated to a constant speed.
  • the adjusting device (19) is passive and tensions the lower run (9) by means of springs (28), which keep the formed belt square tensioned and in shape even with fluctuations in the drive speed of the upper drive (17).
  • the sag (11) and the fleece storage size are controlled by the speed differences of the belt drives (17,18). If the detection device (22), with which the sag height (h) can be determined, is arranged on the adjusting device (19), the sag (11) can also be regulated. For this purpose, if necessary, the coupling of the belt drive (17) to the feed device or the delivery belt (6) can be canceled and the motor speed can be specified and regulated by the controller (23).
  • the upper deflection roller (12) on the feed side is not driven.
  • it can have a belt drive (17) of the type described above.
  • the adjusting device (19) is in figure 3 arranged on the side run (9') between the discharge-side (27) upper and lower deflection rollers (13,18) and forms a central area of the side run (9') attacking clamping device with an additional deflection point or deflection roller (16).
  • This is arranged, for example, on a swivel arm at the end and forms a tensioning roller with which the side strand (9') is shown in FIG figure 3 is changed in its length, the slack (11) of the upper strand (8) being changed accordingly in its height (h).
  • the adjustment can be recorded with the detection device (22) and used for the control and regulation purposes described above.
  • the storage tape (2) is stretched out in a tape pentagon.
  • the belt drive (18) on the discharge side can react elastically and fluctuate in speed to compensate for belt displacements between the upper run (8) and the other, in particular lower belt run area (9,9'). .
  • the actuator (21) is designed as a pivoting drive which pivots the tensioning roller (16).
  • the adjustment movement can be linear, with the actuating drive (21) being correspondingly redesigned as a linear drive.
  • the adjusting device (19) can also be arranged on the side strand (9') on the feed side (26).
  • figure 4 shows a variant of the compensating device (1) with a different arrangement of the lower deflection rollers (14,15,16) and a different design of the lower belt strand area and a different adjusting device (19). Furthermore, a positive drive of the storage belt (2) is provided here. In addition, the pressure roller (30) mentioned at the outset is arranged above the upper deflection roller (13) on the discharge side (27).
  • the storage tape (2) is also stretched out in a tape pentagon here.
  • the side strand (9') on the feed side (26) extends from the deflection roller (12) obliquely downwards to a lower deflection roller (15).
  • the discharge-side (27) side run (9') extends from the upper deflection roller (13) vertically or diagonally downwards to a lower deflection roller (16).
  • the lower strand (9) is guided between the deflection rollers (15, 16) over a further deflection roller (14) arranged above and stretched out in a triangle.
  • the compensating device (1) has electromotive belt drives (17, 18) which are preferably speed-controlled.
  • the adjusting device (19) can be designed either actively or passively and acts on the lower belt run area at the transition point between the lower and side runs (9, 9'). It acts from above, preferably perpendicularly, on the deflection roller (16), which forms a tensioning loop in the lower region of the belt strand on the discharge side (27).
  • the actuating drive (20) is preferably designed as a linear drive of the type described at the outset.
  • the deflection roller (16) is preferably vertically adjustable in a guide.
  • the actuating drive (20) is omitted or switched off.
  • the deflection roller (16) is then pressed down by gravity and weight (29) and tightens the belt loop and the lower and side runs (9, 9').
  • the weight (29) can be formed by the dead weight of the guided deflection roller (16) or possibly also by an additional weight.
  • Actuating device (19) also has a
  • the adjacent deflection roller (14) is arranged above the other deflection roller (15), so that the lower run (9) has an additional tensioning loop in the triangular course.
  • the upper deflection rollers (12, 13) have a profile (31) on the outer circumference, which can be designed, for example, as a toothed profile or a wave profile extending along the roller axis.
  • the storage belt (2) has a matching form-fitting counter-profile (32) and is designed, for example, as a lath belt. Alternatively, it can also be in the form of a toothed belt or the like, optionally with a profiling (32) on one side.
  • At least one of the drive motors (17, 18) is preferably designed as a brake motor.
  • the compensating device (1) can be operated in different ways.
  • the active adjusting device (19) with an adjusting drive (20) together with a detection device (22) the sag height (h) is controlled or regulated via this. This takes place on the delivery side (27) of the lower and/or side strand (9,9').
  • the belt drive (18) on the delivery side can be regulated to a fixed speed and delivery speed, with the belt shifting between the upper strand (8) and the lower or side strand (9, 9') via the feed side (26) and the speed adjustment of the drive (17) there he follows.
  • the belt displacement can be compensated for via an elasticity of the belt drive (18) on the output side, with its speed being able to adapt accordingly.
  • the speed control can be switched off for this purpose. It is also possible to switch to torque control or, if necessary, to torque limitation.
  • the sag (h) is controlled by the preferably speed-controlled belt drives (17,18), the weight (29) tightening the lower and/or side strand (9,9') and keeping it under tension.
  • a positive drive transmission is advantageous for all of these variants and ensures high control precision despite tightening of the lower and/or side run (9,9') in the vicinity of the discharge-side (27) belt drive (18).
  • the passive or active actuator (19) shown can also be relocated and arranged on the feed side (26).
  • the drives (17,18,20,21) are connected to said controller (23).
  • the one or more detection devices (22) are also connected to the controller (23).
  • the controller (23) can be a common controller and can be assigned to the compensating device (1). Alternatively, you can other existing control, for example, be integrated into a higher-level system control.
  • the compensating device (1) can be part of a plant (25) for fiber processing.
  • This schematically indicated system (25) can have the supply and discharge-side system components (4, 5) indicated in the drawings. These can have the above-mentioned construction as fleece layers (4) and bonding devices (5), in particular needling machines or water-jet bonding devices (so-called spunlace). However, they can also be designed in any other way.
  • the plant (25) can include other plant components, e.g. a device for fiber processing and for forming a single- or multi-layer web, which is fed to the fleece layer (4).
  • a device for fiber processing and for forming a single- or multi-layer web which is fed to the fleece layer (4).
  • Such a device can be designed as a card or roller card.
  • the features of the exemplary embodiments can be combined with one another or interchanged. It is also possible to equip the deflection points (12,13,14,15,16) with other sliding or rolling means.
  • the number and arrangement of the adjusting devices (19) can vary.
  • the storage band (2) can be spanned by five, six or more deflection points to form a band pentagon, band hexagon or the like.
  • a triangular arrangement with three deflection points is also possible, in which case, for example, the lower deflection point for the lower run can be adjusted in height with an active or passive adjustment device.
  • other or, in a further modification also several deflection points (12,13,14,15,16) can be changed in their local position to compensate for the fluctuating fleece conveying speeds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (13)

  1. Dispositif de compensation pour des vitesses de transport fluctuantes d'un non-tissé de fibres (3), le dispositif de compensation (1) possédant une bande de réserve (2) entraînée en un mouvement circulaire et comprenant plusieurs points de renvoi (12, 13) et une flèche variable (11) de son brin supérieur (8) qui reprend le non-tissé de fibres (3), caractérisé en ce que la bande de réserve (2) possède trois, quatre ou plus points de renvoi (12, 13, 14, 15, 16) destinés à tendre la bande de réserve (2), le dispositif de compensation (1) possédant un dispositif de réglage (19) servant à modifier l'emplacement d'au moins un point de renvoi (15, 16),
    - le dispositif de réglage (19) possédant un mécanisme d'entraînement de réglage (20, 21) commandable pour un point de renvoi (15, 16) à position variable au niveau de l'autre zone de brin de bande (9, 9'), et
    - possède un dispositif d'acquisition (22) pour la course de positionnement du point de renvoi (15, 16) à position variable,
    - la bande de réserve (2) possédant au moins un mécanisme d'entraînement (17, 18) pour son mouvement circulaire,
    - un mécanisme d'entraînement côté évacuation (18) au niveau du brin supérieur (8) étant commandé ou régulé à une vitesse constante et un mécanisme d'entraînement côté amenée (17) au niveau du brin supérieur (8) étant commandé à une vitesse variable.
  2. Dispositif de compensation pour des vitesses de transport fluctuantes d'un non-tissé de fibres (3), le dispositif de compensation (1) possédant une bande de réserve (2) entraînée en un mouvement circulaire et comprenant plusieurs points de renvoi (12, 13) et une flèche variable (11) de son brin supérieur (8) qui reprend le non-tissé de fibres (3), caractérisé en ce que la bande de réserve (2) possède trois, quatre ou plus points de renvoi (12, 13, 14, 15, 16) destinés à tendre la bande de réserve (2), le dispositif de compensation (1) possédant un dispositif de réglage (19) servant à modifier l'emplacement d'au moins un point de renvoi (15, 16),
    - la bande de réserve (2) possédant au moins un mécanisme d'entraînement (17, 18) pour son mouvement circulaire,
    - un rouleau de renvoi (12, 13) entraîné possédant une enveloppe profilée (31) et la bande de réserve (2) un profilage homologue (32) pour une prise par complémentarité de formes réciproque,
    - un mécanisme d'entraînement côté évacuation (18) au niveau du brin supérieur (8) étant commandé ou régulé à une vitesse constante et un mécanisme d'entraînement côté amenée (17) au niveau du brin supérieur (8) étant commandé à une vitesse variable.
  3. Dispositif de compensation selon la revendication 1 ou 2, caractérisé en ce que le dispositif de réglage (19) est configuré pour la rationalisation et éventuellement pour la commande ou la régulation de la hauteur (h1, h2) de la flèche (11) du brin supérieur (8).
  4. Dispositif de compensation selon la revendication 2, caractérisé en ce que le dispositif de réglage (19) possède un mécanisme d'entraînement de réglage (20, 21) commandable pour un point de renvoi (15, 16) à position variable au niveau de l'autre zone de brin de bande (9, 9').
  5. Dispositif de compensation selon la revendication 1, 2, 3 ou 4, caractérisé en ce que le dispositif de réglage (19) possède un tendeur (28, 29), en particulier un ressort ou un poids, pour le brin supérieur (9) et/ou le brin latéral (9') et un dispositif d'acquisition (22) pour la course de positionnement du point de renvoi (15, 16) à position variable.
  6. Dispositif de compensation selon l'une des revendications précédentes, caractérisé en ce que le non-tissé de fibres (3) est repris au niveau du brin supérieur (8) de la bande de réserve (2), plusieurs points de renvoi (14, 15) tendant un brin inférieur (9) de la bande de réserve (2) vers le bas et l'écartant du brin supérieur (8) de plus que la hauteur maximale (h2) de la flèche (11) .
  7. Dispositif de compensation selon l'une des revendications précédentes, caractérisé en ce qu'un point de renvoi (15) à position variable est disposé à une extrémité d'un brin inférieur (9) et/ou un point de renvoi (16) à position variable est disposé au niveau d'une zone centrale d'un brin inférieur ou latéral (9, 9') de la bande et est configuré comme moyen de tension.
  8. Installation de traitement de fibres comprenant un dispositif de compensation (1) pour des vitesses de transport fluctuantes d'un non-tissé de fibres (3) entre des composants d'installation (4, 5) disposés du côté de l'amenée et du côté de l'évacuation, caractérisée en ce que le dispositif de compensation (1) est configuré selon au moins l'une des revendications 1 à 7.
  9. Installation selon la revendication 8, caractérisée en ce que le dispositif de compensation (1) est disposé entre un poseur de non-tissé (4) et un dispositif de solidification (5), en particulier une machine à aiguilles ou un dispositif de solidification par jet d'eau.
  10. Procédé de compensation des vitesses de transport fluctuantes d'un non-tissé de fibres (3) au moyen d'un dispositif de compensation (1), lequel est disposé entre un poseur de non-tissé (4) et un dispositif de solidification (5), en particulier une machine à aiguilles ou un dispositif de solidification par jet d'eau, le dispositif de compensation (1) possédant une bande de réserve (2) entraînée un mouvement circulaire et comprenant plusieurs points de renvoi (12, 13) et un brin supérieur (8) qui reprend le non-tissé de fibres (3), la flèche (11) du brin supérieur (8) étant mise à varier afin de compenser les vitesses de transport fluctuantes, caractérisé en ce que la bande de réserve (2) possède trois, quatre ou plus points de renvoi (12, 13, 14, 15, 16) destinés à tendre la bande de réserve (2), la position locale d'au moins un point de renvoi (15, 16) étant modifiée avec un dispositif de réglage (19) .
  11. Procédé selon la revendication 10, caractérisé en ce que la hauteur de flèche (h) du brin supérieur (8) est commandée ou régulée par les différences de vitesse entre les mécanismes d'entraînement (17, 18) d'amenée et d'évacuation au niveau du brin supérieur (8), le changement de position d'un point de renvoi (15, 16) de la partie inférieure (9, 9') du brin de la bande de réserve (2) étant rationalisé.
  12. Procédé selon la revendication 10, caractérisé en ce que la hauteur de flèche (h) du brin supérieur (8) est commandée ou régulée par le dispositif de réglage (19) et le changement de position du point de renvoi (15, 16).
  13. Procédé selon la revendication 10, 11 ou 12, caractérisé en ce que la course de positionnement du point de renvoi (15, 16) à position variable est détectée avec un dispositif d'acquisition (22) et intervient dans la régulation de la hauteur de flèche (h) du brin supérieur (8).
EP13770851.7A 2012-09-06 2013-09-06 Dispositif pour compenser des variations de vitesse de transport d'un non-tissé Active EP2893069B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012103402 2012-09-06
PCT/EP2013/068468 WO2014037503A1 (fr) 2012-09-06 2013-09-06 Dispositif de compensation des variations de vitesses de transport d'un non-tissé

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EP2893069A1 EP2893069A1 (fr) 2015-07-15
EP2893069B1 EP2893069B1 (fr) 2016-07-06
EP2893069B2 true EP2893069B2 (fr) 2023-03-15

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US (1) US9617104B2 (fr)
EP (1) EP2893069B2 (fr)
CN (1) CN104755666B (fr)
DE (1) DE202013104053U1 (fr)
WO (1) WO2014037503A1 (fr)

Families Citing this family (6)

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DE202013105029U1 (de) 2013-11-08 2015-02-10 Autefa Solutions Germany Gmbh Vliesleger
DE202014102656U1 (de) * 2014-06-06 2015-09-14 Autefa Solutions Germany Gmbh Prägeeinrichtung
FR3059344B1 (fr) * 2016-11-25 2019-11-22 Andritz Asselin Thibeau Dispositif d'etirage d'un voile dispose entre un dispositif de carde et un etaleur nappeur
DE102017102468A1 (de) * 2017-02-08 2018-08-09 TRüTZSCHLER GMBH & CO. KG Speichertisch für einen Vliesleger und Verfahren zum Betrieb eines Speichertisches
EP3650595B1 (fr) * 2018-11-09 2021-05-19 Oskar Dilo Maschinenfabrik KG Dispositif de compensation
CN113103545B (zh) * 2021-04-15 2022-11-08 中国兵器装备集团自动化研究所有限公司 一种药柱自适应牵引装置

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Also Published As

Publication number Publication date
WO2014037503A1 (fr) 2014-03-13
DE202013104053U1 (de) 2013-12-17
US20150218741A1 (en) 2015-08-06
CN104755666B (zh) 2017-11-21
EP2893069A1 (fr) 2015-07-15
US9617104B2 (en) 2017-04-11
EP2893069B1 (fr) 2016-07-06
CN104755666A (zh) 2015-07-01

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