EP1593761B1 - Swinging arm cross-lapper - Google Patents

Swinging arm cross-lapper Download PDF

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Publication number
EP1593761B1
EP1593761B1 EP04008051A EP04008051A EP1593761B1 EP 1593761 B1 EP1593761 B1 EP 1593761B1 EP 04008051 A EP04008051 A EP 04008051A EP 04008051 A EP04008051 A EP 04008051A EP 1593761 B1 EP1593761 B1 EP 1593761B1
Authority
EP
European Patent Office
Prior art keywords
arm
layering
lapper
transport belts
feeding
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.)
Expired - Lifetime
Application number
EP04008051A
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German (de)
French (fr)
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EP1593761A1 (en
Inventor
Peter Dr. Bastian
Joachim Dr. Leger
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
Original Assignee
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.)
Filing date
Publication date
Priority to DE502004004134T priority Critical patent/DE502004004134D1/en
Application filed by Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Priority to EP04008051A priority patent/EP1593761B1/en
Priority to AT04008051T priority patent/ATE365239T1/en
Priority to EP04015488A priority patent/EP1574605B1/en
Priority to DE502004002857T priority patent/DE502004002857D1/en
Priority to AT04015488T priority patent/ATE353380T1/en
Priority to US11/075,123 priority patent/US7318255B2/en
Priority to US11/074,891 priority patent/US7320154B2/en
Priority to CNB2005100558004A priority patent/CN100419139C/en
Publication of EP1593761A1 publication Critical patent/EP1593761A1/en
Application granted granted Critical
Publication of EP1593761B1 publication Critical patent/EP1593761B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a low-pile leveler according to the preamble of claim 1.
  • a leveler is well known and, for example, in " Nonwovens ", Verlag Wiley-VCH, Weinheim, 2000, page 160 described.
  • the laying arm of the steep-arm leveling machine When depositing a pile onto a delivery conveyor belt, the laying arm of the steep-arm leveling machine performs a pivoting movement, with its lower, free end moving at a small distance above the delivery conveyor belt transversely to its transport direction.
  • the feeding arm moves accordingly.
  • the lower end of the laying arm In known steep arm anchors, the lower end of the laying arm is coupled to a carriage which is movable on rails transversely to the transport direction of the delivery conveyor belt. The carriage is connected to a drive device, so that with their help, the pivoting movement of the laying arm and possibly the Zuriosarms is produced.
  • the velocities with which the card web is delivered by the lapper can be more than 200 m / min, speeds in the range of 300 m / min and more are desired. Accordingly, the free end of the laying arm must move over the delivery conveyor belt in order to avoid material compression and wrinkling in the deposited pile. These high speeds bring about problems caused by aerodynamic effects.
  • a card web section deposited by the nonwoven layer can lift off and flutter under its aerodynamic suction effect. It has therefore already been thought to arrange a garnished pressure roller at the free end of the laying arm, which entangles the fibers of the freshly deposited pile layer with the fibers of the underlying, already laid pile layers. Since a laying arm usually gives off in both pivoting directions fibrous web, therefore, two such pressure rollers must be mounted on the laying arm, which increases its weight accordingly. It should also be noted that the effect that can be produced with such pressure rollers is relatively modest.
  • the invention has for its object to provide a steep-arm leveling of the type mentioned, which is able to work at a high laying speed and while avoiding the adverse effect of aerodynamic effects on the manufactured product.
  • the nonwoven layer according to the invention is designed such that the fibrous web to be deposited between its feeding zone, where it enters the web laying, to the delivery zone, to the delivery gap, where it is discharged from the laying arm in the delivery zone of the delivery conveyor belt between two pile conveyor belts safely is guided, without going through places where he is not or only supported on one side, as is the case with known low-arm-levelers or even Flachtäflind the case. But that's not all, the same pile conveyor belts that guide the batt over the support and laying arms also serve to cover the laid pile layer in the delivery zone. In this case, the web speed of the free end of the laying arm can be controlled so that it is just as large as the Floroudre york the Flortransportbs, so that the freshly laid pile layer covering Flortransportband has no relative speed compared to the newly deposited pile layer.
  • Said lower slide and the free end of the laying arm are preferably connected to each other by pull ropes, pull chains or toothed belts, so that the free end of the laying arm and the lower slide move synchronously with each other.
  • the traction cables, tension chains or toothed belt can run on drive wheels, so that by means of these the pivoting movement of the laying arm can be produced.
  • the pile conveyor belts are preferably guided over guide rollers which, together with the pile conveyor belts, form the delivery gap, which forms the conveyor belt Flor in the delivery zone delivers.
  • the two deflection rollers may be mounted in a further development of the invention in the frame on which the lower end of the laying arm is articulated about a pivot axis lying between the rollers.
  • the frame can be guided in rails and be coupled in a further development of the invention with a device which raises depending on the direction of movement of the laying arm located in front of the direction of deflection roller while lowering the other.
  • the Flortransportbandabites located above the delivery zone, under the instant no Flor is freshly stored, be raised in order to reduce the friction between this Flortransportbandabrough and the underlying pile.
  • the Flortransportbandabites located above the delivery zone under the instant no Flor is freshly stored, be raised in order to reduce the friction between this Flortransportbandabrough and the underlying pile.
  • the Delivery conveyor belt located located deflecting rollers over which the pile conveyor belt is guided be stored raised and lowered.
  • the fleece layer according to the invention is provided with a pile store according to an advantageous development and the two pile conveyor belts are also provided by this pile store guided, in such a way that the leading Florbahnabête extend from the feed zone through the pile storage through to the delivery gap parallel to each other and thus continuously lead the pile and the feed zone to the deposit on the delivery conveyor belt.
  • the aforementioned pile memory is preferably designed such that it can not only perform buffering functions as required by the changing delivery speeds, but also compensates for path length changes of the individual pile conveyor belts which result on the feed arm and laying arm of the web laying machine due to their pivotal movement. Details will be explained later with reference to the drawings.
  • the feed arm 2 is pivotably mounted at its lower end about a stationary pivot axis 4.
  • the laying arm 2 is pivotally mounted about an upper pivot axis 5 of the laying arm 3.
  • the lower, free end of the laying arm 3 is movable over a delivery conveyor belt 6, the transport direction is parallel to the pivot axes 4 and 5.
  • the under end of the laying arm 3 is coupled to an upper carriage 7 which is guided in rails (not shown) which extend across the delivery conveyor 6 on both sides of a delivery zone.
  • Two endless pile conveyor belts 10 and 11 are guided over the feed arm 2 and the laying arm 3 and around the delivery conveyor belt 6 in the area of the delivery zone.
  • the pile conveyor belts 10 and 11 determine between a feed zone A, where the pile is fed, and a delivery gap at the lower end of the laying arm 3 a traveling path section in which the two pile conveyor belts 10 and 11 are guided parallel to each other.
  • the pile conveyor belts 10 and 11 are thus able to between them To surround and hold the cardstock 1.
  • This leading path section extends from the feeding zone A via a first deflecting roller 12, a second, driven deflecting roller 13, a third deflecting roller 14 near the lower pivot bearing 4, via the feed arm 2 and a deflecting roller 15 mounted in the upper pivot bearing 5 up to the delivery gap at the lower end of the laying arm 3.
  • the delivery gap is determined by two deflection rollers 16 and 17, which are mounted in the carriage 7, to which the lower end of the laying arm 3 is articulated.
  • the web conveyor belt 10 extends transversely across the delivery conveyor belt 6 and further over two guide rollers 18 to a first reversing roller 19, which in a lower carriage 20 is mounted, which is arranged below the delivery conveyor belt 6 and there on rails (not shown) transversely to the delivery conveyor belt 6 is movable.
  • a first reversing roller 19 By the first reversing roller 19, the direction of the conveyor belt 10 is reversed.
  • the other web conveyor belt 11 runs from the delivery nip at the lower end of the laying arm 3 via deflection rollers 18 and under the delivery conveyor belt 6 to a second reversing roller 29 which is mounted in the same lower carriage 20 as the first reversing roller 19.
  • From the second reversing roller 29 runs the web conveyor belt 11 back over deflecting rollers 21 to a deflecting roller 30 attached to the lower end of the laying arm 3, along the laying arm 3 along a deflecting roller 31 located in the region of the upper pivot bearing 5, along the feed arm 2 via a deflecting roller 42 arranged near the lower pivot bearing 4 to a drive roller 32 and via further guide rollers 33 and 34 to a drive roller 35 which is located in the region of the feed zone A, whereby the path of the conveyor belt 11 is closed.
  • Fig. 1 the nonwoven layer is shown in the retracted state of feed arm and devisrm.
  • overlapping upper carriage 7 is located on the left side of the delivery conveyor belt 6 shown in the drawing.
  • the reversing rollers 19 and 29 superimposed lower carriage 20 right under the delivery conveyor belt 6. If one compares this situation with the situation shown in Fig. 2, are extended in the laying arm and feeding, it can be seen that the Adjustment of the upper carriage 7 to the right of the lower carriage 20 has moved to the same extent to the left.
  • the other web conveyor belt 10 has during this movement a speed relative to the delivery zone, which consists of the sum of the speed of the upper carriage 7 and the delivery speed of the web conveyor belt 10.
  • a pile conveyor belt 10 On the way back from the delivery slit to the feed zone A, a pile conveyor belt 10, after leaving the feed arm 2, runs over the already mentioned drive roller 25 and from there in a substantially U-shaped path whose apex is formed by the guide roller 26, a further guide roller 27 and the drive roller 28 to the feed zone A.
  • the second pile conveyor belt 11 runs on its way back to the feed zone A after leaving the Zu manufacturedarms 2 via the drive roller 32, a U-shaped path section, in the vertex, the guide roller 33 is a deflecting tension roller 34 and the drive roller 35, which is at the feeding zone A is located.
  • the deflecting rollers 26 and 33 located in the abovementioned vertices of the U-shaped path sections of the returning pile conveyor belts 10 and 11 are rotatably mounted in a holding frame 37 on which the first deflecting roller 12 is mounted to guide the paired leading sections of the pile conveyor belts 10 and 11 to run.
  • the support frame 37 is pivotally mounted in the axis of the guide roller 12 to a frame-shaped arm 38, which is shown in the drawing only schematically with a dash-dotted line and in a pivot bearing 41 in the machine frame (not shown) of the nonwoven layer is suspended.
  • the deflecting tension roller 34 is attached to the pressure arm of a hydraulic cylinder 39.
  • the pressure applied by the hydraulic cylinder 39 on the tension roller 34 compresses the web conveyor belt 11 and transmits via the guide roller 33 and the support frame 37, which acts as a two-armed lever and about the axis of the pile conveyor belts 10 and 11 common guide roller 12 pivots on the it carried deflecting roller 26 on the return section of the other Flortransportbandes 11.
  • a single hydraulic cylinder 39 so both Flortransportb selected 10 and 11 can be stretched.
  • the pile conveyor belts 10 and 11 pass over a plurality of guide rollers 40 mounted on the support and jib arms 2 and 3, some of which rest alternately on one and on the other side of the paired outgoing pile conveyor belt sections to avoid fluttering the pile conveyor belts on the arms 2 and 3.
  • the holding frame 37 remains in its state shown in Fig. 1.
  • the drive roller 13 pulls the holding frame 37 in Fig. 1 to the left via the paired pile conveyor belts 10 and 11 and the guide roller 12, whereby the length of the florstoryden sections of the pile conveyor belts 10 and 11 shortened.
  • the length of the returning portions of the Flortransportb selected 10 and 11 is increased, since the support frame mounted on the 37 guide rollers 26 and 33, of which the return sections of the Flortransportb selected 10 and 11 are deflected in a U-shaped, are also moved to the left. Moving to the left places of the guide rollers 12, 26 and 33 are shown in dashed lines in the drawing with 12 ', 26' and 33 'located.
  • the support frame 37 moves in Fig. 1 to the right, so that the guide rollers 12, 26 and 33 in the in Fig. 1 with 12 ", 26" or.
  • the web conveyor belts 10 and 11 remain tensioned.
  • the length section which the pile conveyor belts 10 and 11 determine between the feed zone A and the delivery gap B can thus be changed. It is thus possible to temporarily change the speed of the pile delivery at the delivery nip B with respect to the pile take-up speed at the feed zone A. This change is necessary in the leveler 1, because the speed at which the delivery gap B, ie the upper carriage 7, moves over the delivery conveyor belt 6, can not be constant, because in the region of the movement reversal points of the laying arm 3 whose speed braked to 0 and accelerated in the opposite direction again.
  • This variation of the delivery speed of the web from the delivery nip B between the guide rollers 16 and 17 B can be achieved by suitable control of the drive rollers 13, 25 and 32 with respect to the drive rollers 28 and 35 be accomplished, in which case the holding frame 37 performs a substantially oscillating movement about the pivot bearing 41, the guide rollers 12, 26 and 33 between the points 12 ', 26' and 33 'on the one hand and the points 12 ", 26" and 33 " on the other hand moved back and forth and thereby cyclically changed the cached pile volume.
  • the illustrated construction of the storage memory 36 may fulfill a further object.
  • a further movement component of the holding frame 37 is now explained in conjunction with FIGS. 1 and 2.
  • the wrap angle of the pile conveyor belts 10 and 11 at The latter deflection rollers thus change in opposite directions.
  • the first mentioned web conveyor belt 10 requires in its return section a change in the sense of increasing the travel path, while the second-mentioned web conveyor belt 11 in its return section requires a change in terms of a reduction of the travel path. Both can be achieved with the aid of the tensioning roll 34, which is under the influence of the hydraulic cylinder 39, which presses the tensioning roller 34 to the right in FIG. 2, which results in the holding frame 37 being moved counterclockwise from its position shown in FIG is pivoted on the handlebar 38 in the position shown in Fig. 2.
  • the return section of the pile conveyor belt 11 is shortened, at the same time the return section of the other pile conveyor belt 10 is extended.
  • the laying width is 3,500 mm.
  • the length of the arms 2 and 3 between the guide roller 31 and the ends of the arms is about 2,800 mm.
  • the pile conveyor belts have a length of 21,500 mm each.
  • the path of travel of the steep-arm leveler 1 is 4,000 mm.
  • the laying arms In the retracted state of the arms 2 and 3, which is shown in Fig. 1, the laying arms enclose an angle of about 27 °, while in the extended state, which is shown in Fig. 2, an angle of about 133 °.
  • the inequality caused by the various arm positions of yielding the pile conveyor belts, due to the change in the wrap angle on the guide rollers 24 and 42, is compensated by an adjustment of about 200 mm of the tension roller 34 by the hydraulic cylinder 39.
  • the frame-shaped link 38 on which the holding frame 37 is suspended, has an effective length (pendulum length) of 1,400 mm, while the distance of the guide rollers 26 and 33 on the holding frame 37 of the pile conveyor common guide rollers 12 is 520 mm.
  • a space of about 2,100 mm in length before the steep-arm leveler 1 and about 1,750 mm in height, including the handlebar assembly 31 is required.
  • the joint deflection roller 12 mounted on the support frame 37 could be designed as a drive roller, while the roller 13 is a free-running deflection roller. It could also be mounted on the support frame 37 guide rollers 26 and 33 drive rollers, while the rollers 25 and 32 are free-wheeling guide rollers.
  • the support frame 37 could instead be suspended from a handlebar 38, be pivotally mounted in a movable carriage.
  • the nonwoven layer could 1 to achieve a greater width laying four or more articulated arms, which are movable in the manner of a scissor lattice, to prevent an increase in the height of the nonwoven layer.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Food-Manufacturing Devices (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

A fleece laying apparatus comprises a camel back cross lapper having an infeed zone, an output conveyor, a supply arm, a layering arm with a lower end reciprocatingly guided on a path above the output conveyor, and two delivery transport belts; and variable-volume web buffering apparatus upstream of the infeed zone and adapted to hold a web between two take-up transport belts. A fleece laying apparatus comprises a camel back cross lapper having an infeed zone, an output conveyor, a supply arm, a layering arm with a lower end reciprocatingly guided on a path above the output conveyor, and transverse to an output direction of the output conveyor, and two delivery transport belts guided in juxtaposed fashion from the infeed zone to the layering-arm lower end; and variable-volume web buffering apparatus upstream of the infeed zone and adapted to hold a web between two take-up transport belts, at least one of which is one of the two delivery transport belts, the web buffering apparatus including a movable common frame, and frame rollers rotatably mounted on the common frame, the frame rollers including a two-belt roller deflecting the take-up transport belts by 180% and >=2 one-belt rollers, the common frame movable transverse the roller axes, at least one of the one-belt rollers wrapped by the one delivery transport belt, such belt guided through an upstream web take-up site to the infeed zone, where web is sandwiched between paired belts for the entire path from the take-up site to the output conveyor.

Description

Die Erfindung bezieht sich auf einen Steilarm-Vliesleger nach dem Oberbegriff des Anspruchs 1. Ein solcher Vliesleger ist allgemein bekannt und beispielsweise in " Vliesstoffe", Verlag Wiley-VCH, Weinheim, 2000, Seite 160 beschrieben.The invention relates to a low-pile leveler according to the preamble of claim 1. Such a leveler is well known and, for example, in " Nonwovens ", Verlag Wiley-VCH, Weinheim, 2000, page 160 described.

Beim Ablegen eines Flors auf ein Abliefer-Transportband führt der Legearm des Steilarm-Vlieslegers eine Schwenkbewegung aus, wobei sein unteres, freies Ende sich in engem Abstand über dem Abliefer-Transportband quer zu dessen Transportrichtung bewegt. Ist das obere Ende des Legearms an einem schwenkbaren Zuführarm schwenkbar angebracht, bewegt sich der Zuführarm entsprechend mit. Bei bekannte Steilarmlegern ist das untere Ende des Legearms mit einem Schlitten gekoppelt, der auf Schienen quer zur Transportrichtung des Abliefer-Transportbandes verfahrbar ist. Der Schlitten ist mit einer Antriebseinrichtung verbunden, so dass mit deren Hilfe die Schwenkbewegung des Legearms und ggf. des Zuführarms hervorgebracht wird.When depositing a pile onto a delivery conveyor belt, the laying arm of the steep-arm leveling machine performs a pivoting movement, with its lower, free end moving at a small distance above the delivery conveyor belt transversely to its transport direction. When the upper end of the laying arm is pivotally mounted on a pivotable feeding arm, the feeding arm moves accordingly. In known steep arm anchors, the lower end of the laying arm is coupled to a carriage which is movable on rails transversely to the transport direction of the delivery conveyor belt. The carriage is connected to a drive device, so that with their help, the pivoting movement of the laying arm and possibly the Zuführarms is produced.

Die Geschwindigkeiten, mit der die Florbahn vom Vliesleger abgegeben wird, kann mehr als 200 m/min betragen, angestrebt werden Geschwindigkeiten im Bereich von 300 m/min und mehr. Entsprechend schnell muss sich das freie Ende des Legearms über das Abliefer-Transportband bewegen, um Materialstauchung und Faltenbildung im abgelegten Flor zu vermeiden. Diese hohen Geschwindigkeiten bringen durch aerodynamische Effekte hervorgerufene Probleme mit sich. Beispielsweise kann sich ein vom Vliesleger abgelegter Florbahnabschnitt unter aerodynamischer Sogwirkung von seiner Unterlage abheben und flattern. Man hat daher bereits daran gedacht, am freien Ende des Legearms eine garnierte Andruckwalze anzuordnen, die die Fasern der frisch abgelegten Florlage mit den Fasern der darunter befindlichen, bereits gelegten Florlagen verfilzt. Da ein Legearm im allgemeinen in beiden Schwenkrichtungen Faserflor abgibt, müssen demnach zwei solcher Andruckwalzen am Legearm angebracht sein, was dessen Gewicht entsprechend vergrößert. Außerdem ist anzumerken, dass die Wirkung, die mit solchen Andruckwalzen hervorgebracht werden kann, relativ bescheiden ist.The velocities with which the card web is delivered by the lapper can be more than 200 m / min, speeds in the range of 300 m / min and more are desired. Accordingly, the free end of the laying arm must move over the delivery conveyor belt in order to avoid material compression and wrinkling in the deposited pile. These high speeds bring about problems caused by aerodynamic effects. By way of example, a card web section deposited by the nonwoven layer can lift off and flutter under its aerodynamic suction effect. It has therefore already been thought to arrange a garnished pressure roller at the free end of the laying arm, which entangles the fibers of the freshly deposited pile layer with the fibers of the underlying, already laid pile layers. Since a laying arm usually gives off in both pivoting directions fibrous web, therefore, two such pressure rollers must be mounted on the laying arm, which increases its weight accordingly. It should also be noted that the effect that can be produced with such pressure rollers is relatively modest.

Der Erfindung liegt die Aufgabe zugrunde, einen Steilarm-Vliesleger der eingangs genannten Art anzugeben, der in der Lage ist, mit großer Legegeschwindigkeit zu arbeiten und dabei den nachteiligen Einfluß aerodynamischer Effekte auf das hergestellte Erzeugnis vermeidet.The invention has for its object to provide a steep-arm leveling of the type mentioned, which is able to work at a high laying speed and while avoiding the adverse effect of aerodynamic effects on the manufactured product.

Diese Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the features specified in claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

Der Vliesleger nach der Erfindung ist derart ausgestaltet, dass der abzulegende Faserflor von seiner Speisezone, wo er in den Vliesleger gelangt, bis zur Ablieferzone, bis zum Lieferspalt, wo er vom Legearm in der Ablieferzone des Abliefer-Transportbandes abgegeben wird, zwischen zwei Flortransportbändern sicher geführt ist, ohne dabei Stellen zu durchlaufen, wo er gar nicht oder nur einseitig abgestützt ist, wie dieses bei bekannten Steilarm-Vlieslegern oder auch bei Flachtäflern der Fall ist. Damit aber nicht genug, die selben Flortransportbänder, die den Faserflor über die Trag- und Legearme führen, dienen auch der Abdeckung der gelegten Florlage in der Ablieferzone. Dabei lässt sich die Bahngeschwindigkeit des freien Endes des Legearms so steuern, dass sie genauso groß ist, wie die Florliefergeschwindigkeit der Flortransportbänder, so dass das die frisch gelegte Florlage abdeckende Flortransportband keinerlei Relativgeschwindigkeit gegenüber der frisch abgelegten Florlage aufweist.The nonwoven layer according to the invention is designed such that the fibrous web to be deposited between its feeding zone, where it enters the web laying, to the delivery zone, to the delivery gap, where it is discharged from the laying arm in the delivery zone of the delivery conveyor belt between two pile conveyor belts safely is guided, without going through places where he is not or only supported on one side, as is the case with known low-arm-levelers or even Flachtäflern the case. But that's not all, the same pile conveyor belts that guide the batt over the support and laying arms also serve to cover the laid pile layer in the delivery zone. In this case, the web speed of the free end of the laying arm can be controlled so that it is just as large as the Florliefergeschwindigkeit the Flortransportbänder, so that the freshly laid pile layer covering Flortransportband has no relative speed compared to the newly deposited pile layer.

In konstruktiv einfacher Weise wird dieses durch einen Verlauf der Flortransportbänder erreicht, der die Ablieferzone des Abliefer-Transportbandes quasi umschlingt. Die beiden Flortransportbänder sind um die Ablieferzone herum auf die Unterseite des Flortransportbandes geführt, wo sie jeweils eine Umkehrwalze umschlingen und von dort zum Legearm zurückgeführt sind, an dem entlang und über den Auslegerarm sie zur Speisezone verlaufen. Die beiden Umkehrwalzen sind an einem gemeinsamen unteren Schlitten drehbar gelagert, der quer zum Abliefer-Transportband unterhalb desselben verfahrbar ist.In a structurally simple way this is achieved by a course of Flortransportbänder, which wraps around the delivery zone of the delivery conveyor belt quasi. The two pile conveyor belts are guided around the delivery zone on the underside of the pile conveyor belt, where they each wrap around a reversing roller and are returned from there to Legearm, along which and extend over the boom to feed zone. The two reversing rollers are rotatably mounted on a common lower carriage which is movable transversely to the delivery conveyor belt below the same.

Der genannte untere Schlitten und das freie Ende des Legearms sind vorzugsweise durch Zugseile, Zugketten oder Zahnriemen miteinander verbunden, so dass sich das freie Ende des Legearms und der untere Schlitten synchron miteinander bewegen. Die Zugseile, Zugketten oder Zahnriemen können über Antriebsräder laufen, so dass vermittels diesen die Schwenkbewegung des Legearms hervorgebracht werden kann.Said lower slide and the free end of the laying arm are preferably connected to each other by pull ropes, pull chains or toothed belts, so that the free end of the laying arm and the lower slide move synchronously with each other. The traction cables, tension chains or toothed belt can run on drive wheels, so that by means of these the pivoting movement of the laying arm can be produced.

Am freien Ende des Legearms sind die Flortransportbänder vorzugsweise über Umlenkwalzen geführt, die zusammen mit den Flortransportbändern den Lieferspalt ausbilden, der den Flor in der Ablieferzone abgibt. Die beiden Umlenkwalzen können in Weiterbildung der Erfindung in Rahmen gelagert sein, an dem das untere Ende des Legearms um eine zwischen den Walzen liegende Schwenkachse angelenkt ist. Der Rahmen kann in Schienen geführt und in Weiterbildung der Erfindung mit einer Einrichtung gekoppelt sein, die in Abhängigkeit von der Bewegungsrichtung des Legearms die in Bewegungsrichtung vorn befindliche Umlenkwalze hebt, während sie die andere absenkt. Mit dieser Maßnahme kann der über der Ablieferzone befindliche Flortransportbandabschnitt, unter dem augenblicklich kein Flor frisch abgelegt wird, angehoben werden, um die Reibung zwischen diesem Flortransportbandabschnitt und dem darunter befindlichen Flor zu vermindern. Gegebenenfalls können zusätzlich auch die neben dem Abliefer-Transportband befindlichen Umlenkwalzen, über die das Flortransportband geführt ist, heb- und senkbar gelagert sein.At the free end of the laying arm, the pile conveyor belts are preferably guided over guide rollers which, together with the pile conveyor belts, form the delivery gap, which forms the conveyor belt Flor in the delivery zone delivers. The two deflection rollers may be mounted in a further development of the invention in the frame on which the lower end of the laying arm is articulated about a pivot axis lying between the rollers. The frame can be guided in rails and be coupled in a further development of the invention with a device which raises depending on the direction of movement of the laying arm located in front of the direction of deflection roller while lowering the other. With this measure, the Flortransportbandabschnitt located above the delivery zone, under the instant no Flor is freshly stored, be raised in order to reduce the friction between this Flortransportbandabschnitt and the underlying pile. Optionally, in addition to the delivery conveyor belt located located deflecting rollers over which the pile conveyor belt is guided, be stored raised and lowered.

Da die schwenkende Legebewegung des Legearms nicht gleichmäßig ist, sondern vor Erreichen des Bewegungsumkehrpunktes abgebremst und danach wieder beschleunigt werden muss, ist es erforderlich, die Geschwindigkeit, mit der die Flortransportbänder Flor am Lieferspalt abgeben, entsprechend anzupassen, um eine zu starke Florablage im Bereich der Bewegungsumkehrstellen zu vermeiden. Andererseits erfolgt die Florabgabe einer Krempel mit gleichförmiger Geschwindigkeit. Mit dieser Geschwindigkeit muss der Flor vom Vliesleger aufgenommen werden. Um eine Anpassung zwischen dieser gleichförmigen Zuführgeschwindigkeit des Flors in die Speisezone des Vlieslegers mit der schwankenden Abgabegeschwindigkeit des Flors am Lieferspalt in Einklang zu bringen, ist der Vliesleger nach der Erfindung gemäß einer vorteilhaften Weiterbildung mit einem Florspeicher versehen und sind die beiden Flortransportbänder auch durch diesen Florspeicher geführt, und zwar derart, dass sich die hinlaufenden Florbahnabschnitte von der Speisezone durch den Florspeicher hindurch bis zum Lieferspalt parallel zueinander erstrecken und somit dem Flor und der Speisezone bis zur Ablage auf dem Abliefer-Transportband kontinuierlich führen.Since the pivoting laying motion of the laying arm is not uniform, but must be decelerated before reaching the reversal point and then accelerated again, it is necessary to adjust the speed with which the pile conveyor belts deliver Flor at the delivery gap, in order to ensure a too strong pile storage in the area Avoid moving reversals. On the other hand, the pile delivery of a carding occurs at a uniform speed. With this speed, the pile must be absorbed by the fleece layer. In order to reconcile an adaptation between this uniform feed rate of the pile into the feed zone of the fleece layer and the fluctuating delivery rate of the pile at the delivery gap, the fleece layer according to the invention is provided with a pile store according to an advantageous development and the two pile conveyor belts are also provided by this pile store guided, in such a way that the leading Florbahnabschnitte extend from the feed zone through the pile storage through to the delivery gap parallel to each other and thus continuously lead the pile and the feed zone to the deposit on the delivery conveyor belt.

Der genannte Florspeicher ist vorzugsweise derart ausgebildet, dass er nicht nur wie durch die wechselnden Liefergeschwindigkeiten notwendigen Zwischenspeicherfunktionen ausführen kann, sondern auch Weglängenänderungen der einzelnen Flortransportbänder kompensiert, die sich an dem Zuführarm und dem Legearm des Vlieslegers aufgrund von deren Schwenkbewegung ergeben. Details werden später unter Bezugnahme auf die Zeichnungen erläutert.The aforementioned pile memory is preferably designed such that it can not only perform buffering functions as required by the changing delivery speeds, but also compensates for path length changes of the individual pile conveyor belts which result on the feed arm and laying arm of the web laying machine due to their pivotal movement. Details will be explained later with reference to the drawings.

Kurzbeschreibung der ZeichnungenBrief description of the drawings

  • Fig. 1 zeigt schematisch eine Seitenansicht eines Steilarm-Vlieslegers nach der Erfindung mit Florspeicher im eingefahrenen Zustand des Legearms, undFig. 1 shows schematically a side view of a steep-arm fleece layer according to the invention with storage in the retracted state of Legearms, and
  • Fig. 2 zeigt eine der Fig. 1 ähnliche Darstellung im ausgefahrenen Zustand des Legearms.Fig. 2 shows a similar to Fig. 1 representation in the extended state of Legearms.

In den Zeichnungen sind nur die wesentlichen Merkmale der Erfindung dargestellt, und dieses nur schematisch, da eine schematische Darstellung für das Verständnis der Erfindung ausreicht. So ist insbesondere in der Zeichnung ein Maschinengestell, das die zahlreichen, noch zu erläuternden Elemente hält und lagert, nicht dargestellt.In the drawings, only the essential features of the invention are shown, and this only schematically, since a schematic representation is sufficient for understanding the invention. Thus, in particular in the drawing, a machine frame that holds and stores the numerous, yet to be explained elements, not shown.

Fig. 1 zeigt einen Vliesleger 1 mit einem Zuführarm 2 und einem Legearm 3. Der Zuführarm 2 ist an seinem unteren Ende um eine ortsfeste Schwenkachse 4 schwenkbar gelagert. An seinem oberen Ende ist am Zuführarm 2 um eine obere Schwenkachse 5 der Legearm 3 schwenkbar gelagert. Das untere, freie Ende des Legearms 3 ist über einem Abliefer-Transportband 6 verfahrbar, dessen Transportrichtung parallel zu den Schwenkachsen 4 und 5 verläuft. Das unter Ende des Legearms 3 ist mit einem oberen Schlitten 7 gekoppelt, der in Schienen (nicht dargestellt) geführt ist, die sich quer über das Abliefer-Transportband 6 beiderseits einer Ablieferzone erstrecken.1 shows a fleece layer 1 with a feed arm 2 and a laying arm 3. The feed arm 2 is pivotably mounted at its lower end about a stationary pivot axis 4. At its upper end, the laying arm 2 is pivotally mounted about an upper pivot axis 5 of the laying arm 3. The lower, free end of the laying arm 3 is movable over a delivery conveyor belt 6, the transport direction is parallel to the pivot axes 4 and 5. The under end of the laying arm 3 is coupled to an upper carriage 7 which is guided in rails (not shown) which extend across the delivery conveyor 6 on both sides of a delivery zone.

An dem oberen Schlitten 7 sind Zugseile oder Zahnriemen oder Ketten 8 befestigt, die über Umlenkräder 9 um das Abliefer-Transportband 6 herum geführt sind. Von den Umlenkrädern 9 ist eines oder ein Paar, das mit 9a bezeichnet ist, motorisch angetrieben, was in der Zeichnung besonders gekennzeichnet ist, so dass über dem Zahnriemen- oder Kettentrieb 8 der obere Schlitten 7 quer zum Abliefer-Transportband 6 hin und her bewegt werden kann, wobei der mit dem oberen Schlitten 7 gekoppelte Legearm 3 und der Zuführarm 2 jeweils Schwenkbewegungen ausführen.On the upper carriage 7 tension cables or toothed belts or chains 8 are fixed, which are guided over deflection wheels 9 to the delivery conveyor belt 6 around. Of the guide wheels 9 is one or a pair, which is designated by 9a, driven by a motor, which is particularly marked in the drawing, so that above the toothed belt or chain drive 8, the upper carriage 7 moves transversely to the delivery conveyor belt 6 back and forth can be, wherein the coupled with the upper carriage 7 Legearm 3 and the Zuführarm 2 each perform pivotal movements.

Über den Zuführarm 2 und den Legearm 3 und um das Abliefer-Transportband 6 im Bereich der Ablieferzone herum verlaufend sind zwei endlose Flortransportbänder 10 und 11 geführt. Die Flortransportbänder 10 und 11 bestimmen zwischen einer Speisezone A, wo der Flor zugeführt wird, und einem Lieferspalt am unteren Ende des Legearms 3 einen hinlaufenden Wegabschnitt, in dem die beiden Flortransportbänder 10 und 11 parallel zueinander geführt sind. Die Flortransportbänder 10 und 11 sind somit in der Lage, zwischen sich eine Florbahn 1 zu umschließen und festzuhalten. Dieser hinlaufende Wegabschnitt verläuft von der Speisezone A über eine erste Umlenkwalze 12, eine zweite, angetriebene Umlenkwalze 13, eine dritte Umlenkwalze 14 nahe dem unteren Schwenklager 4, über den Zuführarm 2 und eine im oberen Schwenklager 5 gelagerte Umlenkwalze 15 bis zum Lieferspalt am unteren Ende des Legearms 3. Der Lieferspalt wird von zwei Umlenkwalzen 16 und 17 bestimmt, die in dem Schlitten 7 gelagert sind, an dem das unter Ende des Legearms 3 angelenkt ist.Two endless pile conveyor belts 10 and 11 are guided over the feed arm 2 and the laying arm 3 and around the delivery conveyor belt 6 in the area of the delivery zone. The pile conveyor belts 10 and 11 determine between a feed zone A, where the pile is fed, and a delivery gap at the lower end of the laying arm 3 a traveling path section in which the two pile conveyor belts 10 and 11 are guided parallel to each other. The pile conveyor belts 10 and 11 are thus able to between them To surround and hold the cardstock 1. This leading path section extends from the feeding zone A via a first deflecting roller 12, a second, driven deflecting roller 13, a third deflecting roller 14 near the lower pivot bearing 4, via the feed arm 2 and a deflecting roller 15 mounted in the upper pivot bearing 5 up to the delivery gap at the lower end of the laying arm 3. The delivery gap is determined by two deflection rollers 16 and 17, which are mounted in the carriage 7, to which the lower end of the laying arm 3 is articulated.

Ab dem Lieferspalt trennen sich die Wege der beiden Flortransportbänder 10 und 11. Im dargestellten Beispiel der Fig. 1 verläuft das Flortransportband 10 quer über das Abliefer-Transportband 6 und weiter über zwei Umlenkwalzen 18 bis zu einer ersten Umkehrwalze 19, die in einem unteren Schlitten 20 gelagert ist, der unterhalb des Abliefer-Transportbandes 6 angeordnet und dort auf Schienen (nicht dargestellt) quer zum Abliefer-Transportband 6 verfahrbar ist. Durch die erste Umkehrwalze 19 wird die Richtung des Transportbandes 10 umgekehrt. Es läuft dann über Umlenkwalzen 21 zurück zum unteren Ende des Legearms 3, dort über eine weitere Umlenkwalze 22, weiter über eine im Bereich des oberen Schwenklagers 5 gelegene obere Umlenkwalze 23, entlang dem Zuführarm 2 zu einer unteren Umlenkwalze 24, eine Antriebswalze 25 und zwei weitere Umlenkwalzen 26 und 27 zu einer im Bereich der Speisezone A befindlichen Antriebswalze 28, womit der Laufweg dieses Flortransportbandes 10 geschlossen ist.In the illustrated example of FIG. 1, the web conveyor belt 10 extends transversely across the delivery conveyor belt 6 and further over two guide rollers 18 to a first reversing roller 19, which in a lower carriage 20 is mounted, which is arranged below the delivery conveyor belt 6 and there on rails (not shown) transversely to the delivery conveyor belt 6 is movable. By the first reversing roller 19, the direction of the conveyor belt 10 is reversed. It then passes over deflection rollers 21 back to the lower end of the laying arm 3, there via a further guide roller 22, further on a located in the region of the upper pivot bearing 5 upper guide roller 23, along the feed 2 to a lower guide roller 24, a drive roller 25 and two Further guide rollers 26 and 27 to a located in the feed zone A drive roller 28, whereby the path of this Flortransportbandes 10 is closed.

Das andere Flortransportband 11 läuft vom Lieferspalt am unteren Ende des Legearms 3 über Umlenkwalzen 18 und unter dem Abliefer-Transportband 6 zu einer zweiten Umkehrwalze 29, die in demselben unteren Schlitten 20 gelagert ist, wie die erste Umkehrwalze 19. Von der zweiten Umkehrwalze 29 läuft das Flortransportband 11 zurück über Umlenkwalzen 21 zu einer am unteren Ende des Legearms 3 angebrachten Umlenkwalze 30, an dem Legarm 3 entlang zu einer im Bereich des oberen Schwenklagers 5 befindlichen Umlenkwalze 31, entlang dem Zuführarm 2 über eine nahe dem unteren Schwenklager 4 angeordenete Umlenkwalze 42 zu einer Antriebswalze 32 und über weitere Umlenkwalzen 33 und 34 zu einer Antriebswalze 35, die im Bereich der Speisezone A gelegen ist, womit der Weg des Transportbandes 11 geschlossen ist.The other web conveyor belt 11 runs from the delivery nip at the lower end of the laying arm 3 via deflection rollers 18 and under the delivery conveyor belt 6 to a second reversing roller 29 which is mounted in the same lower carriage 20 as the first reversing roller 19. From the second reversing roller 29 runs the web conveyor belt 11 back over deflecting rollers 21 to a deflecting roller 30 attached to the lower end of the laying arm 3, along the laying arm 3 along a deflecting roller 31 located in the region of the upper pivot bearing 5, along the feed arm 2 via a deflecting roller 42 arranged near the lower pivot bearing 4 to a drive roller 32 and via further guide rollers 33 and 34 to a drive roller 35 which is located in the region of the feed zone A, whereby the path of the conveyor belt 11 is closed.

In Fig. 1 ist der Vliesleger im eingefahrenen Zustand von Zuführarm und Legearm dargestellt. Der die Umlenkwalzen 16 und 17 am Lieferspalt lagernde obere Schlitten 7 befindet sich auf der in der Zeichnung dargestellten linken Seite des Abliefer-Transportbandes 6. In dieser Situation befindet sich der die Umkehrwalzen 19 und 29 lagernde untere Schlitten 20 rechts unter dem Abliefer-Transportband 6. Vergleicht man diese Situation mit der in Fig. 2 gezeigten Situation, in der Legearm und Zuführarm ausgefahren sind, erkennt man, dass sich durch die Verstellung des oberen Schlittens 7 nach rechts der untere Schlitten 20 in gleichem Umfang nach links verschoben hat. Entsprechend der durch diese Bewegung hervorgerufenen zusätzlichen Abgabe von Flortransportband 10 auf der Oberseite der Ablieferzone hat der untere Schlitten 20 nach links nachgegeben und gleichzeitig einen Nachschub von Transportband 11 ermöglicht, was durch die Ankopplung des Riemen- oder Kettentriebs 8 an den unteren Schlitten 20 unterstützt wird.In Fig. 1, the nonwoven layer is shown in the retracted state of feed arm and Legearm. Of the guide rollers 16 and 17 at the delivery gap overlapping upper carriage 7 is located on the left side of the delivery conveyor belt 6 shown in the drawing. In this situation is the reversing rollers 19 and 29 superimposed lower carriage 20 right under the delivery conveyor belt 6. If one compares this situation with the situation shown in Fig. 2, are extended in the laying arm and feeding, it can be seen that the Adjustment of the upper carriage 7 to the right of the lower carriage 20 has moved to the same extent to the left. According to the caused by this movement additional delivery of web conveyor belt 10 on top of the delivery zone of the lower carriage 20 has yielded to the left and at the same time allows replenishment of conveyor belt 11, which is supported by the coupling of the belt or chain drive 8 to the lower carriage 20 ,

Bei der Bewegung des unteren Endes des Legearms 3 von der in Fig. 1 gezeigten Stellung in die Fig. 2 gezeigte Stellung rollt die am oberen Schlitten 7 gelagerte Umlenkwalze 16 auf dem von ihr abgegebenen Flortransportband 11 ab, wenn die Geschwindigkeit, mit der das Flortransportband 10 von seiner Antriebswalze 32 angetrieben wird, genauso groß ist, wie die Bewegungsgeschwindigkeit des oberen Schlittens 7. Da die Florbahn mit dieser Geschwindigkeit aus dem Lieferspalt abgegeben wird, hat der sich auf den frisch gelegten Flor auflegende Abschnitt des Flortransportbandes 11 keine Relativgeschwindigkeit gegenüber dem Flor, abgesehen von der Transportgeschwindigkeit, die von dem Abliefer-Transportband quer zur Legerichtung des Legearms 3 erzeugt wird. Das andere Flortransportband 10 hat während dieser Bewegung eine Geschwindigkeit relativ zur Lieferzone, die aus der Summe der Geschwindigkeit des oberen Schlittens 7 und der Liefergeschwindigkeit des Flortransportbandes 10 besteht. Gleiches gilt für die Flortransportbänder entsprechend bei der umgekehrten Bewegungsrichtung des oberen Schlittens 7. Die Praxis hat gezeigt, dass diese Relativgeschwindigkeit zwischen dem gelegten Vlies und dem dieses abdekkenden Flortransportband 10 bzw. 11 nicht stört. Gegebenenfalls kann man dafür sorgen, dass der obere Schlitten 7 gegenüber dem Legearm 3 so verschwenkt wird, dass die in Bewegungsrichtung vorn liegende Umlenkwalze 17 bzw. 16 leicht angehoben wird, wie bereits erläutert.During the movement of the lower end of the laying arm 3 from the position shown in FIG. 1 into the position shown in FIG. 2, the deflection roller 16 mounted on the upper slide 7 rolls on the pile transport belt 11 delivered by it when the speed with which the pile conveyor belt moves 10 is driven by its drive roller 32 is the same as the speed of movement of the upper carriage 7. Since the card web is discharged from the supply gap at this speed, the section of the nap conveyor belt 11 resting on the newly laid pile does not have a relative speed to the nap except for the transport speed generated by the delivery conveyor belt across the laying direction of the laying arm 3. The other web conveyor belt 10 has during this movement a speed relative to the delivery zone, which consists of the sum of the speed of the upper carriage 7 and the delivery speed of the web conveyor belt 10. The same applies to the Flortransportbänder according to the reverse direction of movement of the upper carriage 7. The practice has shown that this relative speed between the laid fleece and this cover off Florentransportband 10 and 11 does not bother. If necessary, it is possible to ensure that the upper slide 7 is pivoted relative to the laying arm 3 in such a way that the deflecting roller 17 or 16 located in front in the direction of movement is slightly lifted, as already explained.

Der sich zwischen der Speisezone A und dem Zuführarm 2 befindende Abschnitt der gezeigten Konstruktion bildet einen Florspeicher, der insgesamt mit 36 bezeichnet ist. Dessen Aufbau und Wirkungsweise sollen nachfolgend näher erläutert werden.The portion of the construction shown between the feed zone A and the feed arm 2 forms a pile store, indicated generally at 36. Its structure and mode of action will be explained in more detail below.

Auf dem Weg zurück vom Lieferspalt zur Speisezone A läuft das eine Flortransportband 10 nach Verlassen des Zuführarms 2 über die schon erwähnte Antriebswalze 25 und von dort in einer im wesentlichen U-förmig verlaufenden Bahn, deren Scheitelpunkt von der Umlenkwalze 26 gebildet wird, eine weitere Umlenkwalze 27 und die Antriebswalze 28 zur Speisezone A.On the way back from the delivery slit to the feed zone A, a pile conveyor belt 10, after leaving the feed arm 2, runs over the already mentioned drive roller 25 and from there in a substantially U-shaped path whose apex is formed by the guide roller 26, a further guide roller 27 and the drive roller 28 to the feed zone A.

Das zweite Flortransportband 11 läuft auf seinem Weg zurück zur Speisezone A nach dem Verlassen des Zuführarms 2 über die Antriebswalze 32, einen U-förmigen Bahnabschnitt, in dessen Scheitelpunkt sich die Umlenkwalze 33 befindet, eine umlenkende Spannwalze 34 und die Antriebswalze 35, die sich an der Speisezone A befindet.The second pile conveyor belt 11 runs on its way back to the feed zone A after leaving the Zuführarms 2 via the drive roller 32, a U-shaped path section, in the vertex, the guide roller 33 is a deflecting tension roller 34 and the drive roller 35, which is at the feeding zone A is located.

Die in den genannten Scheitelpunkten der U-förmigen Wegabschnitte der rücklaufenden Flortransportbänder 10 und 11 befindlichen Umlenkwalzen 26 und 33 sind in einem Halterahmen 37 drehbar gelagert, an dem auch die erste Umlenkwalze 12 gelagert ist, um die die paarig geführten Hinlaufabschnitte der Flortransportbänder 10 und 11 laufen. Der Halterahmen 37 ist in der Achse der Umlenkwalze 12 schwenkbar an einem rahmenförmigen Lenker 38 angebracht, der in der Zeichnung nur schematisch mit einer strichpunktierten Linie dargestellt ist und in einem Schwenklager 41 im Maschinengestell (nicht dargestellt) des Vlieslegers aufgehängt ist.The deflecting rollers 26 and 33 located in the abovementioned vertices of the U-shaped path sections of the returning pile conveyor belts 10 and 11 are rotatably mounted in a holding frame 37 on which the first deflecting roller 12 is mounted to guide the paired leading sections of the pile conveyor belts 10 and 11 to run. The support frame 37 is pivotally mounted in the axis of the guide roller 12 to a frame-shaped arm 38, which is shown in the drawing only schematically with a dash-dotted line and in a pivot bearing 41 in the machine frame (not shown) of the nonwoven layer is suspended.

Die umlenkende Spannwalze 34 ist am Druckarm eines Hydraulikzylinders 39 angebracht. Die von dem Hydraulikzylinder 39 auf die Spannwalze 34 aufgebrachte Druckkraft spannt das Flortransportband 11 und überträgt sich über die Umlenkwalze 33 und den Halterahmen 37, der als zweiarmiger Hebel wirkt und um die Achse der den Flortransportbändern 10 und 11 gemeinsamen Umlenkwalze 12 schwenkt, über die von ihm getragene Umlenkwalze 26 auf den Rücklaufabschnitt des anderen Flortransportbandes 11. Mit einem einzigen Hydraulikzylinder 39 können also beide Flortransportbänder 10 und 11 gespannt werden.The deflecting tension roller 34 is attached to the pressure arm of a hydraulic cylinder 39. The pressure applied by the hydraulic cylinder 39 on the tension roller 34 compresses the web conveyor belt 11 and transmits via the guide roller 33 and the support frame 37, which acts as a two-armed lever and about the axis of the pile conveyor belts 10 and 11 common guide roller 12 pivots on the it carried deflecting roller 26 on the return section of the other Flortransportbandes 11. With a single hydraulic cylinder 39 so both Flortransportbänder 10 and 11 can be stretched.

Auf ihrem Weg über die Arme 2 und 3 laufen die Flortransportbänder 10 und 11 über mehrere an den Trag- und Legearmen 2 und 3 gelagerte Führungswalzen 40, von denen einige abwechselnd auf der einen und auf der anderen Seite der paarig geführten hinlaufenden Flortransportbandabschnitte anliegen, um ein Flattern der Flortransportbänder an den Armen 2 und 3 zu vermeiden.On their way across the arms 2 and 3, the pile conveyor belts 10 and 11 pass over a plurality of guide rollers 40 mounted on the support and jib arms 2 and 3, some of which rest alternately on one and on the other side of the paired outgoing pile conveyor belt sections to avoid fluttering the pile conveyor belts on the arms 2 and 3.

Nachfolgend seien verschiedene Betriebszustände betrachtet und erläutert.Below, various operating conditions are considered and explained.

Solange die Antriebswalzen 13, 25, 28, 32 und 35 gleiche Umfangsgeschwindigkeiten haben, verharrt der Halterahmen 37 in seinem in Fig. 1 gezeigten Zustand. Wenn die Umfangsgeschwindigkeit der Antriebswalze 13 gegenüber der der anderen Antriebswalzen größer wird, zieht die Antriebswalze 13 über die gepaarten Flortransportbänder 10 und 11 und die Umlenkwalze 12 den Halterahmen 37 in Fig. 1 nach links, wodurch sich die Länge der florführenden Abschnitte der Flortransportbänder 10 und 11 verkürzt. Gleichzeitig aber wird die Länge der rücklaufenden Abschnitte der Flortransportbänder 10 und 11 vergrößert, da die am Halterahmen 37 gelagerten Umlenkwalzen 26 und 33, von denen die Rücklaufabschnitte der Flortransportbänder 10 und 11 U-förmig umgelenkt werden, gleichfalls nach links bewegt werden. Nach links bewegte Orte der Umlenkwalzen 12, 26 und 33 sind in der Zeichnung gestrichelt mit 12', 26' bzw. 33' eingezeichnet.As long as the drive rollers 13, 25, 28, 32 and 35 have the same peripheral speeds, the holding frame 37 remains in its state shown in Fig. 1. When the peripheral speed of the drive roller 13 is larger than that of the other drive rollers, the drive roller 13 pulls the holding frame 37 in Fig. 1 to the left via the paired pile conveyor belts 10 and 11 and the guide roller 12, whereby the length of the florführenden sections of the pile conveyor belts 10 and 11 shortened. At the same time, however, the length of the returning portions of the Flortransportbänder 10 and 11 is increased, since the support frame mounted on the 37 guide rollers 26 and 33, of which the return sections of the Flortransportbänder 10 and 11 are deflected in a U-shaped, are also moved to the left. Moving to the left places of the guide rollers 12, 26 and 33 are shown in dashed lines in the drawing with 12 ', 26' and 33 'located.

Wenn hingegen die Antriebsgeschwindigkeit der Antriebswalze 13 gegenüber denen der anderen Antriebswalzen kleiner wird, bewegt sich der Halterahmen 37 in Fig. 1 nach rechts, so dass die Umlenkwalzen 12, 26 und 33 in die in Fig. 1 mit 12", 26" bzw. 33" gestrichelt eingezeichneten Stellungen gelangen. Da die Verstellung der Umlenkwalzen 12, 26 und 33 in gleichem Umfang erfolgt, bleiben die Flortransportbänder 10 und 11 gespannt.If, however, the drive speed of the drive roller 13 is smaller than those of the other drive rollers, the support frame 37 moves in Fig. 1 to the right, so that the guide rollers 12, 26 and 33 in the in Fig. 1 with 12 ", 26" or. As the adjustment of the deflecting rollers 12, 26 and 33 takes place to the same extent, the web conveyor belts 10 and 11 remain tensioned.

Mit Hilfe der Bewegung des Halterahmens 37 lässt sich somit der Längenabschnitt, den die Flortransportbänder 10 und 11 zwischen der Speisezone A und dem Lieferspalt B bestimmen, verändern. Es ist damit möglich, die Geschwindigkeit der Florabgabe am Lieferspalt B gegenüber der Floraufnahmegeschwindigkeit an der Speisezone A vorübergehend zu ändern. Diese Änderung ist bei dem Vliesleger 1 erforderlich, weil die Geschwindigkeit, mit der sich der Lieferspalt B, d.h. der obere Schlitten 7, über das Abliefer-Transportband 6 bewegt, nicht konstant sein kann, denn im Bereich der Bewegungsumkehrpunkte des Legearms 3 muss dessen Geschwindigkeit bis auf 0 abgebremst und in die entgegengesetzte Richtung wieder beschleunigt werden. Würden während dieser Brems- und Beschleunigungsphasen die Flortransportbänder 10 und 11 weiter mit konstanter Geschwindigkeit Flor durch den Lieferspalt B abgeben, dann würden sich im Randbereich der von dem Vliesleger 1 gelegten Vliesbahn Verdickungen ergeben, was aber unbedingt vermieden werden muss. Es ist daher erforderlich, die Geschwindigkeit, mit der der Flor von den Flortransportbändern abgegeben wird, entsprechend der Bewegungsgeschwindigkeit des Schlittens 7 über das Abliefer-Transportband 6 zu variieren. Diese Variation der Abgabegeschwindigkeit des Flors aus dem Lieferspalt B zwischen den Umlenkwalzen 16 und 17 B kann durch passende Steuerung der Antriebswalzen 13, 25 und 32 gegenüber den Antriebswalzen 28 und 35 bewerkstelligt werden, wobei dann der Halterahmen 37 eine im wesentlichen pendelnde Bewegung um das Schwenklager 41 ausführt, die die Umlenkwalzen 12, 26 und 33 zwischen den Punkten 12', 26' und 33' einerseits und den Punkten 12", 26" und 33" andererseits hin und her bewegt und dadurch das zwischengespeicherte Florvolumen zyklisch verändert.With the aid of the movement of the holding frame 37, the length section which the pile conveyor belts 10 and 11 determine between the feed zone A and the delivery gap B can thus be changed. It is thus possible to temporarily change the speed of the pile delivery at the delivery nip B with respect to the pile take-up speed at the feed zone A. This change is necessary in the leveler 1, because the speed at which the delivery gap B, ie the upper carriage 7, moves over the delivery conveyor belt 6, can not be constant, because in the region of the movement reversal points of the laying arm 3 whose speed braked to 0 and accelerated in the opposite direction again. If during these braking and acceleration phases the pile conveyor belts 10 and 11 continue to deliver pile at a constant speed through the delivery nip B, then thickenings would result in the edge region of the nonwoven web laid by the nonwoven layer 1, but this must absolutely be avoided. It is therefore necessary to vary the speed at which the pile is discharged from the pile conveyor belts according to the moving speed of the carriage 7 via the delivery conveyor 6. This variation of the delivery speed of the web from the delivery nip B between the guide rollers 16 and 17 B can be achieved by suitable control of the drive rollers 13, 25 and 32 with respect to the drive rollers 28 and 35 be accomplished, in which case the holding frame 37 performs a substantially oscillating movement about the pivot bearing 41, the guide rollers 12, 26 and 33 between the points 12 ', 26' and 33 'on the one hand and the points 12 ", 26" and 33 " on the other hand moved back and forth and thereby cyclically changed the cached pile volume.

Die gezeigte Konstruktion des Florspeichers 36 kann noch eine weitere Aufgabe erfüllen. Hierfür wird in Zusammenschau der Figuren 1 und 2 nun eine weitere Bewegungskomponente des Halterahmens 37 erläutert.The illustrated construction of the storage memory 36 may fulfill a further object. For this purpose, a further movement component of the holding frame 37 is now explained in conjunction with FIGS. 1 and 2.

Fig. 2 zeigt den Vliesleger 1 im gestreckten Zustand von Zuführarm 2 und Legearm 3. Man erkennt aus Fig. 2 sehr schnell, dass die Umschlingungswinkel der Flortransportbänder 10 und 11 an den Umlenkwalzen 15, 23 und 31, die im Gelenkbereich der Arme 2 und 3 angeordnet sind, und an den Umlenkwalzen 14, 24 und 42, die im Bereich des festen Lagerpunktes des Zuführarms 2 angeordnet sind, gegenüber dem Zustand von Fig. 1 verändert sind. Während die Änderung der Umschlingungswinkel der paarig geführten Flortransportbandabschnitte und auch die Änderung der Umschlingungswinkel an den im Gelenkbereich der Arme 2 und 3 befindlichen Umlenkwalzen 23 und 31 für die Rücklaufabschnitte der Flortransportbänder keinen einander entgegengesetzten Einfluss auf die Flortransportbänder haben, ist der Umschlingungswinkel des Rücklaufabschnitts des einen Flortransportbandes 10 an der Umlenkwalze 24 in Fig. 2 gegenüber dem Zustand in Fig. 1 kleiner, der Umschlingungswinkel des rücklaufenden Abschnitts des anderen Flortransportbandes 11 an der Umlenkwalze 42 aber größer als beim Zustand in Fig. 1. Die Umschlingungswinkel der Flortransportbänder 10 und 11 an den letztgenannten Umlenkwalzen ändern sich also einander gegensinnig. Das erstgenannte Flortransportband 10 verlangt in seinem Rücklaufabschnitt eine Veränderung im Sinne einer Vergrößerung des Laufweges, während das zweitgenannte Flortransportband 11 in seinem Rücklaufabschnitt eine Veränderung im Sinne einer Verkleinerung des Laufweges verlangt. Beides kann mit Hilfe der Spannwalze 34 erreicht werden, die unter dem Einfluss des Hydraulikzylinders 39 steht, der in Fig. 2 die Spannwalze 34 nach rechts drückt, was dazu führt, dass der Halterahmen 37 aus seiner in Fig. 1 gezeigten Stellung entgegen dem Uhrzeigersinn am Lenker 38 in die in Fig. 2 gezeigte Stellung verschwenkt wird. Der Rücklaufabschnitt des Flortransportbandes 11 wird verkürzt, gleichzeitig wird der Rücklaufabschnitt des anderen Flortransportbandes 10 verlängert.It can be seen from Fig. 2 very quickly that the wrap angle of the web conveyor belts 10 and 11 on the guide rollers 15, 23 and 31, in the joint region of the arms 2 and 3 are arranged, and at the guide rollers 14, 24 and 42, which are arranged in the region of the fixed bearing point of the Zuführarms 2, compared to the state of Fig. 1 are changed. While the change of the wrap angle of the paired pile conveyor belt sections and also the change of the wrap angles at the return rollers 23 and 31 in the hinge region of the arms 2 and 3 for the return sections of the pile conveyor belts have no opposite effect on the pile conveyor belts, the wrap angle of the return section is one 1, the wrap angle of the returning portion of the other pile conveyor belt 11 on the guide roller 42 but larger than in the state in Fig. 1. The wrap angle of the pile conveyor belts 10 and 11 at The latter deflection rollers thus change in opposite directions. The first mentioned web conveyor belt 10 requires in its return section a change in the sense of increasing the travel path, while the second-mentioned web conveyor belt 11 in its return section requires a change in terms of a reduction of the travel path. Both can be achieved with the aid of the tensioning roll 34, which is under the influence of the hydraulic cylinder 39, which presses the tensioning roller 34 to the right in FIG. 2, which results in the holding frame 37 being moved counterclockwise from its position shown in FIG is pivoted on the handlebar 38 in the position shown in Fig. 2. The return section of the pile conveyor belt 11 is shortened, at the same time the return section of the other pile conveyor belt 10 is extended.

Es versteht sich, dass die Bewegungen des Haltrahmens 37 um das Schwenklager 41 des Lenkers 38 und die Schwenkbewegungen des Halterahmens 37 am Lenker 38 um die Achse der die gepaarten Flortransportbänder 10 und 11 umlenkenden Walze 12 sich im Betrieb überlagern, weil die Kompensation des Geschwindigkeitsunterschiedes der Flortransportbänder 10 und 11 an Lieferspalt B und Speisezpne A und die Kompensation der gegensinnigen Änderung von Walzenumschlingungswinkeln gleichzeitig stattfinden muss. Die Zeichnung zeigt, dass beides mit Hilfe einer äußerst einfach aufgebauten, besonders für Steilarm-Viesleger geeigneten Vorrichtung erzielt wird.It is understood that the movements of the support frame 37 about the pivot bearing 41 of the handlebar 38 and the pivotal movements of the support frame 37 on the handlebar 38 about the axis of the paired pile conveyor belts 10 and 11 deflecting roller 12 overlap in operation, because the compensation of the speed difference of Flortransportbänder 10 and 11 at delivery gap B and feed A and the compensation of the opposite change of Walzenumschlingungswinkeln must take place simultaneously. The drawing shows that both are achieved with the help of a very simple design, especially for steep-arm Viesleger suitable device.

Für die Bemessung eines praktischen Ausführungsbeispiels seien folgende Daten für eine Anordnung, wie sie in den Fig. 1 und 2 dargestellt ist, genannt:For the dimensioning of a practical embodiment, the following data for an arrangement as shown in FIGS. 1 and 2 are given:

Die Legebreite betrage 3.500 mm. Die Länge der Arme 2 und 3 zwischen der Umlenkwalze 31 und den Enden den Arme beträgt jeweils etwa 2.800 mm. Die Flortransportbänder haben eine Länge von jeweils 21.500 mm. Der Bewegungsweg des Steilarm-Vlieslegers 1 ist 4.000 mm. Im eingefahrenen Zustand der Arme 2 und 3, der in Fig. 1 dargestellt ist, schließen die Legearme einen Winkel von etwa 27° ein, während sie im gestreckten Zustand, der in Fig. 2 dargestellt ist, einen Winkel von etwa 133° einschließen. Die durch die verschiedenen Armstellungen hervorgerufene Ungleichheit des Nachgebens der Flortransportbänder, bedingt durch die Änderung der Umschlingungswinkel an den Umlenkwalzen 24 und 42, wird durch eine Verstellung um etwa 200 mm der Spannwalze 34 durch den Hydraulikzylinder 39 kompensiert. Der rahmenförmige Lenker 38, an dem der Halterahmen 37 aufgehängt ist, hat eine wirksame Länge (Pendellänge) von 1.400 mm, während der Abstand der Umlenkwalzen 26 und 33 an dem Halterahmen 37 von der den Flortransportbändern gemeinsamen Umlenkwalze 12 jeweils 520 mm beträgt. Für die Unterbringung des Florspeichers 36 wird ein Platz von etwa 2.100 mm Länge vor dem Steilarm-Vliesleger 1 und etwa 1.750 mm Höhe, einschließlich der Lenkeranordnung 31, benötigt.The laying width is 3,500 mm. The length of the arms 2 and 3 between the guide roller 31 and the ends of the arms is about 2,800 mm. The pile conveyor belts have a length of 21,500 mm each. The path of travel of the steep-arm leveler 1 is 4,000 mm. In the retracted state of the arms 2 and 3, which is shown in Fig. 1, the laying arms enclose an angle of about 27 °, while in the extended state, which is shown in Fig. 2, an angle of about 133 °. The inequality caused by the various arm positions of yielding the pile conveyor belts, due to the change in the wrap angle on the guide rollers 24 and 42, is compensated by an adjustment of about 200 mm of the tension roller 34 by the hydraulic cylinder 39. The frame-shaped link 38, on which the holding frame 37 is suspended, has an effective length (pendulum length) of 1,400 mm, while the distance of the guide rollers 26 and 33 on the holding frame 37 of the pile conveyor common guide rollers 12 is 520 mm. For the storage of the storage tank 36 a space of about 2,100 mm in length before the steep-arm leveler 1 and about 1,750 mm in height, including the handlebar assembly 31 is required.

Es sind zahlreiche Varianten möglich, die sich dem Fachmann im Lichte der vorliegenden Erfindung offenbaren. So könnte beispielsweise die am Halterahmen 37 gelagerte gemeinsame Umlenkwalze 12 als Antriebswalze ausgebildet sein, während die Walze 13 eine freilaufende Umlenkwalze ist. Es könnten ferner die am Halterahmen 37 gelagerten Umlenkwalzen 26 und 33 Antriebswalzen sein, während die Walzen 25 und 32 freilaufende Umlenkwalzen sind. Der Halterahmen 37 könnte anstatt an einem Lenker 38 aufgehängt zu sein, in einem verfahrbaren Schlitten schwenkbar gelagert sein. Ferner könnte der Vliesleger 1 für Erzielung einer größeren Legebreite vier oder mehr Gelenkarme aufweisen, die nach Art eines Scherengitters beweglich sind, um ein Anwachsen der Bauhöhe des Vlieslegers zu vermeiden. Zweckmäßigerweise sind dann auch Einrichtungen vorgesehen, die die Schwenkbewegung der weiteren Gelenkarme mit der des Legarms koordinieren, d.h. die Schwenkgeschwindigkeiten aufeinander abstimmen. Die Flortransportbänder 10 und 11 werden bei einer solchen Anordnung gepaart über alle gelenkig miteinander verbundenen Arme geführt, so dass der Flor auf seinem gesamten Weg stets von zwei eng anliegenden Flortransportbändern gehalten wird.Numerous variants are possible, which will be apparent to those skilled in the art in light of the present invention. For example, the joint deflection roller 12 mounted on the support frame 37 could be designed as a drive roller, while the roller 13 is a free-running deflection roller. It could also be mounted on the support frame 37 guide rollers 26 and 33 drive rollers, while the rollers 25 and 32 are free-wheeling guide rollers. The support frame 37 could instead be suspended from a handlebar 38, be pivotally mounted in a movable carriage. Furthermore, the nonwoven layer could 1 to achieve a greater width laying four or more articulated arms, which are movable in the manner of a scissor lattice, to prevent an increase in the height of the nonwoven layer. Conveniently, then facilities are provided which coordinate the pivotal movement of the other articulated arms with the Legarms, ie tune the pivot speeds to each other. The pile conveyor belts 10 and 11 are paired in such an arrangement guided over all articulated arms, so that the pile is always held on its entire path of two tight-fitting pile conveyor belts.

Die Integration von Florspeicher, Florführung über Zuführ- und Legearm und Abdeckung des gelegten Flors auf dem Abliefer-Transportband unter Verwendung eines einzigen Flortransportbänderpaares bietet hervorragende Vorteile gegenüber dem Stand der Technik nicht nur hinsichtlich des apparativen Aufwandes, sondern auch hinsichtlich des bearbeiteten Erzeugnisses. Die zum Vlies zu legende Florbahn wird bei dieser integrierten Vorrichtung von der Speisezone, wo sie von der Vorrichtung aufgenommen wird, bis zum Lieferspalt ununterbrochen zwischen den Flortransportbändern festgehalten. Nirgends erfährt sie eine mechanische Belastung durch freien Durchhang, Zug oder Übergabe von einem Transportband zum anderen, wie es bei Flachtäflern der Fall ist. Diese schonende Behandlung setzt sich nach dem Verlassen des Lieferspaltes fort, denn der Flor wird von einer der Flortransportbahnen weiterhin begleitet, nämlich jener, die ihn unmittelbar nach dem Verlassen des Lieferspaltes abdeckt. Er kann auf der ihn tragenden Unterlage, die aus bereits gelegtem Vlies besteht, zur Ruhe kommen, ohne aerodynamisch nachteiligen Einflüssen ausgesetzt zu sein.The integration of pile storage, pile guide on supply and Legearm and covering the laid pile on the delivery conveyor belt using a single Flortransportbänderpaares offers excellent advantages over the prior art not only in terms of equipment cost, but also in terms of the processed product. The web to be laid to the fleece is held in this integrated device from the feed zone, where it is received by the device, to the supply gap continuously between the pile conveyor belts. Nowhere does it experience a mechanical load due to free sag, pull or transfer from one conveyor belt to another, as is the case with flat-roofers. This gentle treatment continues after leaving the delivery slit, because the pile is still accompanied by one of the pile conveyor belts, namely the one which covers it immediately after leaving the delivery slit. He can come to rest on the supporting surface, which consists of already laid fleece, without being exposed to aerodynamically adverse influences.

Claims (14)

  1. Swinging arm cross-lapper, comprising:
    a feeding arm (2) pivotally mounted at in a stationary lower pivot axis (4),
    a downwardly extending layering arm (3) pivotally supported at the upper end of the feeding arm (2) around an upper pivot axis (5) extending in parallel to the lower pivot axis (4), the free end of said layering arm (3) being guided in an at least approximately straightly extending movement path,
    an endless output conveyor belt (6) extending approximately in parallel to the upper and lower pivot axes (4, 5) and having a layering zone which is located below the movement path of the free end of the layering arm (3),
    endless revolving fiber web transport means (10, 11) guided on the feeding arm (2) and the layering arm (3) for receiving a fiber web in an infeed zone (A) and for layering same in the layering zone onto the output conveyor (6) under a pivotal movement of feeding arm (2) and layering arm (3), and
    drive means (9a, 25, 32) for moving the fiber web transport means (10, 11), the feeding arm (2) and the layering arm (3) and the output conveyor (6), characterized in that
    the fiber web transport means consist of two endless transport belts (10, 11), which are guided in a feeding path section extending at least from the lower pivot axis (4) to the lower, free end of the layering arm (3) in parallel to one another in a pressed-together state, and which form in this path section a clamping portion for the fiber web, said clamping portion ending in a discharge nip (at 16, 17) at the lower, free end of the layering arm (3),
    the transport belts (10, 11) extend from the discharge nip (B) in opposite directions transversely across the layering zone in a tight distance to the output conveyor (6) and cover same in the layering zone,
    the transport belts (10, 11) are each guided up to a reversing roller (19, 29) from where the transport belts (10, 11) are returned over the layering arm (3) and the feeding arm (2) up to the infeed zone, and
    the reversing rollers (19, 29) are supported in a common carriage (20) which is disposed below the output conveyor (6) and which is displaceably guided transversely thereto.
  2. Swinging arm cross-lapper as claimed in claim 1, characterized in that the free end of the layering arm (3) and the carriage (20) supporting the reversing rollers (19, 29) are connected via a traction rope or a or chain drive (8) to one another and to a drive means (9a) for the generation of a pivoting movement of layering arm (3) and feeding arm (2).
  3. Swinging arm cross-lapper as claimed in claim 1 or 2, characterized in that deflection rollers (16, 17) are supported on the free end of the layering arm (3), around which said rollers the transport belts (10, 11) are passed.
  4. Swinging arm cross-lapper as claimed in claim 1, characterized in that
    the discharge nip is formed between two deflection rollers (16, 17) supported in a pivoting frame (7) coupled to the free end of the layering arm (3), said transport belts (10, 11) passing over said deflection rollers,
    the pivoting frame (7) is pivotally supported on the layering arm (3) around an axis arranged between the reversing rollers (10, 11) and extending in parallel thereto, and
    means are provided, which are adapted to pivot the pivoting frame (7) depending on the movement direction of the layering arm (3) in a manner that the deflection roller lying in front in the movement direction is lifted and the other reversing roller is lowered.
  5. Swinging arm cross-lapper as claimed in one of the preceding claims, characterized in that
    between the infeed zone (A) and the lower pivot axis (4) of the feeding arm (2) a fiber web buffering device (36) is arranged, in which the transport belts (10, 11) are guided in parallel in sections extending to the discharge nip (at 16, 17) in contact with one another and in a substantially U-shaped path section, in which the fiber web transport belts (10, 11) jointly run over a substantially half looped reversing roller (12),
    the sections of the fiber web transport belts returning from the feeding arm (2) to the infeed zone (A) are guided over U-shaped path sections, extending opposite to the U-shaped path section of the sections extending to the discharge nip (B) and each looping a further reversing roller (26, 33) approximately by half, and
    said three reversing rollers (12, 36, 33) are rotatably supported in a common mounting frame (37), which for a mutual length adjustment of the transport belt sections extending to and returning from the discharge nip is held in a frame of the cross-lapper so as to be displaceable substantially in parallel to the U-shaped path sections of the transport belts extending towards and from the reversing rollers (12, 26, 33).
  6. Swinging arm cross-lapper as claimed in claim 5, characterized in that the mounting frame (37) is movably held in the frame of the cross-lapper (1) by means of a pendulum means (38).
  7. Swinging arm cross-lapper as claimed in claim 5, characterized in that the mounting frame (37) is movably held in the frame of the cross-lapper (1) by means of a displaceable carriage.
  8. Swinging arm cross-lapper as claimed in one of claims 5 to 8, characterized in that the mounting frame (37) is pivotally supported around an axis of the common deflection roller (12) of the feeding sections of the fiber web transport belts (10, 11).
  9. Swinging arm cross-lapper as claimed in one of claims 5 to 8, characterized in that one of the U-shaped guided path sections of the returning sections of one (11) of the fiber web transport belts is guided over a further substantially half looped tensioning roll (34), which is adjustably mounted in a machine frame and which is biased by a tensioning means (39) opposite to path sections of the transport belt (11) extending towards the tensioning means.
  10. Swinging arm cross-lapper as claimed in one of claims 5 to 9, characterized in that the transport belts (10, 11) are guided over an independent drive roller (28, 35) and their feeding sections jointly over a drive roller (13), and that to change a fiber web discharge speed with respect to an intake speed of the swinging arm cross-lapper at the infeed zone (A), the joint drive roller (13) has a circumferential speed that is variable with respect to the circumferential speeds of the first mentioned independent drive rollers (28, 35).
  11. Swinging arm cross-lapper as claimed in one of claims 1 to 9, characterized in that the transport belts (10, 11) are guided over an independent drive roller (28, 35) and the joint reversing roller (12) supported in the mounting frame (37) is also a drive roller, and that for a variation of a fiber web discharge speed compared to an intake speed of the swinging arm cross-lapper (1) at the infeed zone (A), the joint driven reversing roller (12) has a circumferential speed that is variable with respect to the circumferential speeds of the first mentioned independent drive rollers (28, 35).
  12. Swinging arm cross-lapper as claimed in one of the preceding claims, characterized in that feeding sections of the transport belts (10, 11) are guided on the feeding and layering arms (2, 3) jointly over a plurality of guide rollers (40) arranged behind each other in the transport direction of the transport belts (10, 11), said guide rollers alternately contacting the one and the other side of the paired transport belts (10, 11).
  13. Swinging arm cross-lapper as claimed in claim 11 or 12, characterized in that the returning sections of the transport belts (10, 11) between the feeding arm (2) and the U-shaped extending path sections are each guided over a drive roller (25, 32) which is looped by the respective fiber web transport belt (10, 11) by more than 90°.
  14. Swinging arm cross-lapper as claimed in one of the preceding claims, characterized in that between the feeding arm and the layering arm at least two further feeding arms are arranged which are articulated to one another and to the feeding arm and the layering arm, and means are provided, which coordinate the pivoting movement of the further feeding arms with the pivoting movement of the layering arm.
EP04008051A 2004-03-08 2004-04-02 Swinging arm cross-lapper Expired - Lifetime EP1593761B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP04008051A EP1593761B1 (en) 2004-04-02 2004-04-02 Swinging arm cross-lapper
AT04008051T ATE365239T1 (en) 2004-04-02 2004-04-02 STEEP ARM FLEECE LAYER
DE502004004134T DE502004004134D1 (en) 2004-04-02 2004-04-02 Swinging arm cross-lapper
DE502004002857T DE502004002857D1 (en) 2004-03-08 2004-07-01 Fleece laying device
EP04015488A EP1574605B1 (en) 2004-03-08 2004-07-01 Lap-forming apparatus
AT04015488T ATE353380T1 (en) 2004-03-08 2004-07-01 FLEECE LAYING DEVICE
US11/075,123 US7318255B2 (en) 2004-04-02 2005-03-08 Cross lapper
US11/074,891 US7320154B2 (en) 2004-03-08 2005-03-08 Fleece laying device
CNB2005100558004A CN100419139C (en) 2004-04-02 2005-03-23 Cross lapper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04008051A EP1593761B1 (en) 2004-04-02 2004-04-02 Swinging arm cross-lapper

Publications (2)

Publication Number Publication Date
EP1593761A1 EP1593761A1 (en) 2005-11-09
EP1593761B1 true EP1593761B1 (en) 2007-06-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04008051A Expired - Lifetime EP1593761B1 (en) 2004-03-08 2004-04-02 Swinging arm cross-lapper

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Country Link
US (1) US7318255B2 (en)
EP (1) EP1593761B1 (en)
CN (1) CN100419139C (en)
AT (1) ATE365239T1 (en)
DE (1) DE502004004134D1 (en)

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ATE363556T1 (en) * 2004-03-08 2007-06-15 Dilo Kg Maschf Oskar STORAGE DEVICE
US7320154B2 (en) * 2004-03-08 2008-01-22 Oskar Dilo Maschinenfabrik Ag Fleece laying device
EP1593761B1 (en) * 2004-04-02 2007-06-20 Oskar Dilo Maschinenfabrik KG Swinging arm cross-lapper
ATE398691T1 (en) * 2006-02-01 2008-07-15 Dilo Kg Maschf Oskar DEVICE FOR LAYING A FLEECE
ATE464411T1 (en) * 2007-02-15 2010-04-15 Dilo Kg Maschf Oskar DEVICE FOR LAYING A FLEECE
DE502007003930D1 (en) * 2007-03-30 2010-07-08 Dilo Kg Maschf Oskar lapper
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CN100419139C (en) 2008-09-17
ATE365239T1 (en) 2007-07-15
DE502004004134D1 (en) 2007-08-02
US20050217077A1 (en) 2005-10-06
US7318255B2 (en) 2008-01-15
EP1593761A1 (en) 2005-11-09
CN1676693A (en) 2005-10-05

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