EP0031830B1 - Apparatus for severing a fibe layer of staple fibres - Google Patents

Apparatus for severing a fibe layer of staple fibres Download PDF

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Publication number
EP0031830B1
EP0031830B1 EP80901271A EP80901271A EP0031830B1 EP 0031830 B1 EP0031830 B1 EP 0031830B1 EP 80901271 A EP80901271 A EP 80901271A EP 80901271 A EP80901271 A EP 80901271A EP 0031830 B1 EP0031830 B1 EP 0031830B1
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EP
European Patent Office
Prior art keywords
roller
rollers
tandem
rolls
pair
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
Application number
EP80901271A
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German (de)
French (fr)
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EP0031830A1 (en
Inventor
Paul Gyger
Hugo SCHÄR
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Priority to AT80901271T priority Critical patent/ATE7311T1/en
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0031830A1 publication Critical patent/EP0031830A1/en
Application granted granted Critical
Publication of EP0031830B1 publication Critical patent/EP0031830B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G27/00—Lap- or sliver-winding devices, e.g. for products of cotton scutchers, jute cards, or worsted gill boxes
    • D01G27/04—Lap- or sliver-winding devices, e.g. for products of cotton scutchers, jute cards, or worsted gill boxes with automatic discharge of lap-roll or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0428—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements for cans, boxes and other receptacles
    • B65H67/0434—Transferring material devices between full and empty cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a device for separating a fiber template from mutually slidable staple fibers with two driven roller pairs, which form two clamping lines for the fiber template guided between them.
  • a fiber template of mutually slidable staple fibers in the sense of this invention is understood to mean any fiber aggregate that extends in the longitudinal direction, regardless of the shape of its cross section, i. H.
  • Both fiber aggregates with a round or centrally symmetrical cross-section such as the conveyor belts of the staple fiber spinning mill) as well as with the elongated cross-section (such as the fiber floss in a lap-forming cotton machine or the fleece of a card of the staple fiber spinning mill), in which the fibers in one any shape (e.g. as longitudinal single fibers or flakes), and which essentially only stick together through the adhesive forces of the fibers to each other.
  • GB-A 967 366 also describes separation methods or devices for separating a fiber template, in which a clutch is required to interrupt the drive to the rear pair of rollers as seen in the direction of travel and thus does not separate the fiber template by actuating the clutch interrupted drive of the front pair of rollers.
  • Fig. 6 of GB-A 967 366 also shows another solution in which the fiber template can be separated by a separate drive for the front pair of rollers, this solution, just like the other solutions described in GB-A 967 366, requires one Large number of gears, which leads to high manufacturing costs.
  • the object of the present invention is therefore to propose a device of the type mentioned at the outset which is simple and reliable in construction, requires little maintenance work and in particular does not require a clutch in the drive system of both pairs of rollers.
  • a device of the type mentioned which is characterized in that the two pairs of rollers are kinematically coupled by means of a flexible force transmission element, and that the element around the drive roller of the driven roller of each pair of rollers and at least two further stationary deflection rollers, and around two connected to a roller tandem, movable rollers is guided so that it forms a loop leading over one of the rollers of the tandem loop between the drive rollers, and between the two deflection rollers forms a loop leading over the other role of the tandem, so that by moving the portable Roll tandems make one of the loops shorter by a certain amount, while the other becomes longer by the same amount, so that one pair of rollers can be rotated relative to the other and the fiber template clamped between the clamping lines is separated by pulling apart.
  • the figure shows the device according to the invention in a schematic, greatly simplified representation, and that is applied, according to a preferred embodiment of the invention, in a winding-forming cotton machine of the combing preparation process.
  • a plurality of staple fiber tapes are pulled out of the supply cans 1 and 2 (which are only shown schematically and on a much reduced scale in the figure) and doubled, that is, by suitable means, not shown united by side by side to a wide fiber template 3.
  • a fiber template 3 normally has a width of approximately 30 cm.
  • This fiber template 3, which forms a thick cotton wool, is wound onto a roll 4. This happens that the fiber template 3 is attached to the surface of the sleeve 5 in any way at the beginning of the winding process.
  • the sleeve 5 is supported on a friction roller 6, which is driven by means mentioned later, and is set in rotation by this by frictional engagement.
  • the fiber template 3 winds up around the sleeve 5 and forms a winder 4 that becomes ever larger in diameter.
  • the sleeve 5 must of course shift relative to the friction roller 6 in accordance with the widening diameter, which is ensured by appropriate holding means.
  • such holding means have the form of two guides 7, 8 which are perpendicular to the friction roller 6 and which guide the sleeve 5 on both edges (only one edge shown).
  • other types of holding means for the sleeve 5 can be provided, such as. B. closing arms, which guide the sleeve 5 along a circular path, etc.
  • the sleeve 5 is pressed onto it by suitable means (not shown) in order to increase the entrainment by the friction roller 6. It can further be provided that the drive of the winding 4 does not take place by means of cleaning by the friction roller 6, but that the sleeve 5 itself is driven by means of drive elements (not shown), with suitable control means then ensuring that the speed of the winding 4 corresponds to that increasing diameter of the same is continuously adjusted.
  • suitable drive types i. H. those in which the winding 4 is set in rotation by direct drive of the sleeve 5 and combined by a friction roller can be used in the context of this invention.
  • rollers 9/10 and 11/12 are provided according to the invention, which form two clamping lines m and n for the fiber template 3 guided between them.
  • the lower rollers 9 and 11 of the roller pairs are driven rollers, as will be explained in more detail, and are rotatably supported about the axes 13 and 14 in a frame of the machine, also not shown, with stationary bearings, not shown.
  • the upper rollers 10 and 12 of the roller pairs are designed as pressure rollers, which are guided vertically movably in a stationary body 17 provided with vertical guides for the corresponding axes 15 and 16 and are pressed against the driven rollers 9 and 11 by means of compression spring 18 .
  • the two driven rollers 9 and 11 of the roller pairs 9/10 and 11/12 are now kinematically coupled according to the invention by means of a flexible force transmission element 19, the element 19 preferably being a slip-free working element.
  • the force transmission element 19 is a chain or a toothed belt which is in engagement with corresponding chain wheels or toothed belt pulleys for the purpose of non-slip transmission of force and movement.
  • the force transmission element 19 is guided around the drive roller 20 or 21 of the driven roller 9 or 11 of each pair of rollers and at least two further stationary deflection rollers 22 and 23, the corresponding axes 24 and 25 of which are rotatably mounted in the frame of the machine, not shown. Furthermore, two movable rollers 27 and 28 connected to a roller tandem 26 are present in the track of the force transmission element 19. For this purpose, the axes 29 and 30 of the rollers 27 and 28 are rotatably mounted in a common bearing body 31.
  • the force transmission element 19 forms a loop 32 and 33 between the drive rollers 20 and 21 and the roller 27 and between the two deflection rollers 22, 23 and the roller 28 the rollers 20, 21, 22 and 23 are fixed in place, the scope of the flexible force transmission element 19 is independent of the position of the roller tandem 26.
  • a piston / cylinder 34, 35 system is provided in FIG. 1, the piston rod 36 of which is connected directly to the bearing body 31.
  • the cylinder 35 is connected by means of a line 37 with a valve 38 to a pressure source (not shown) for a suitable fluid and contains a return spring 39.
  • a pressure source not shown
  • the valve 38 When the valve 38 is opened, the pressure medium flows into the cylinder 35 from below and pushes the piston 34 together with piston rod 36, overcoming the force exerted by the return spring 39, from bottom to top, with which the bearing body 31 z. B. is shifted from position A to position B.
  • the piston 34 together with the bearing body 31 can then be returned to its initial position under the influence of the force of the return spring 39.
  • other methods e.g. purely mechanical drives with toothed rack and pinion, not shown
  • the axis 24 of the deflection roller 22 is equipped with a pulley 40 for a belt 41.
  • the belt 41 is driven by a motor 42 with a pulley 43 and thus sets the power transmission element ment 19 in circulation.
  • the friction roller 6, starting from the axis 14 of the roller 11, is driven by means of the pulley 44, belt 45 and pulley 46, so that there is a kinematic coupling between the roller 11 and the friction roller 6.
  • the belt 45 is preferably selected as a toothed belt.
  • a chain drive can of course also be used for the friction roller 6.
  • the ratio of the diameters of the pulleys 44 and 46 is chosen essentially equal to the ratio between the diameters of the roller 11 and the friction roller 6, so that between the clamping line n and the friction roller 6 the fiber template 3 does not warp (if one is from a possible here negligible tension delay) is subjected.
  • the type of drive of the power transmission element 19 and the friction roller 6 shown here is not the only one that can come into question in the context of this invention.
  • rollers 9 and 11 (as shown in the figure) have the same diameter and / or are kinematically coupled by means of drive rollers 20 and 21 of the same size. If this is the case, then both driven rollers 9 and 11 of the roller pairs 9/10 and 11/12 have the same surface speed, with which the fiber template 3 during the rotation of the force transmission element 19 around the stationary tandem 26 between the clamping lines m and n without Delays are transported further.
  • one of the roller pairs is kept in relation to the other during the displacement of the roller tandem 26, so that the relative rotation of the second roller pair must take place in relation to a stationary roller pair.
  • This is e.g. B. realized in the device of the figure shown that the roller 9 is braked directly by means of a brake 50 operated by a system cylinder 47 / piston 48 and piston rod 49. The piston 48 is actuated by means of the line 51 and the valve 52.
  • B. the use of a so-called stop motor, d. H. a motor equipped with a brake, also a very good solution instead of motor 42.
  • the motor 42 drives the roller pairs 9/10 and 11/12 via the belt 41 and the force transmission element 19, which continuously pull the fiber template 3 out of the cans 1 and 2 and convey them to the winding 4.
  • the winding 4 rotates by friction on the friction roller 6, which is also driven by the motor 42, and the fiber template 3 is wound onto the winding surface.
  • the motor 42 is switched off.
  • the fiber template 3 between the clamping lines m and n and from the clamping line n to the roll 4 is maintained throughout.
  • valves 52 and 38 are actuated simultaneously or in quick succession, with which the brake 50 comes into action and the roller tandem 26 is shifted from its lower position A to the upper position B shown in broken lines.
  • the drive roller 21 and the deflecting roller 23 must rotate clockwise, which causes the rollers 11, 12 to rotate in the sense of conveying the fiber template 3 from left to right . Since the rollers 9, 10 stand still, the fiber template 3 is separated between the clamping lines m and n by pulling apart, which is the purpose of the invention.
  • the diameter d of the drive roller 21 of the driven roller 11 of the further rotated roller pair 11/12, the diameter D of the driven roller 11 and the maximum stack length s of the fiber template 3 there is preferably the following relationship
  • the friction roller 6, which is kinematically coupled to the roller 11, is also rotated by the same superficial distance, so that the fiber template 3 is always in order is wound onto the surface of the winding 4.
  • the severed template end (not shown) can now be wound onto the surface of the roll 4 by two methods, thus providing the roll 4 for its replacement.
  • the motor 42 can be put into operation again for a short time; as a result, as during normal operation, the rollers 9, 11 and 6 are driven, with the result that the fiber feed is shifted from left to right before and after the separation point.
  • the motor 42 is switched off again and the winding 4 is exchanged for a new, empty sleeve 5 either manually or automatically, using known means, not shown.
  • the displacement path L of the tandem 26 is chosen so large that not only the fiber template 3 would be separated by the relative rotation of the rollers 11, 12 and 6 compared to the rollers 9, 10, but that the Separation point of the fiber template 3, or the end thereof on the winding side, is conveyed to the surface of the winding 4, while the rollers 9 and 10 are stationary.
  • the winding change operation can be carried out in a known manner.
  • the return of the tandem 26 from the position B to the position of normal operation A can in this second case (in which no fiber template 3 remains between the clamping line n of the roller 11, 12) immediately done during the change operation; it does not matter here whether the rollers 11 and 12 have to turn back (counterclockwise).
  • the first method in which the fiber wadding 3 is already pulled through the clamping line n of the pair of rollers 11/12 before the change operation, the resetting of the roller tandem 26 from position B to position A during normal operation, i. H. during the following construction phase for the next winding 4. This movement is carried out at such a low speed compared to the surface speed of the rollers 9, 11 and 6 that the change in the fiber mass of the fiber template 3 after the rollers 11, 12, which is naturally given, is negligible.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Multicomponent Fibers (AREA)

Abstract

Plant for separating an aggregate of fibers comprised of agglomerations which may slide with respect to each other, by means of two pairs of driven rollers (9/10; 11/12), which form two pinching lines (m and n) for the agglomeration. The separation is effected because the two pairs of rollers are coupled kinematically by a flexible force transmission element (19) so that the displacement of a roller tandem (26) positionned in the path of the element (19) causes the relative rotation of one pair of rollers (11, 12) with respect to the other pair (9, 10). The aggregate pinched between the pinching lines m and n will be separated by said relative rotation of the pairs of rollers. This plant has the advantages to be simple and reliable and further it does not require any clutching means.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur Trennung einer Faservorlage aus zueinander gleitbaren Stapelfasern mit zwei angetriebenen Walzenpaaren, welche zwei Klemmlinien für die dazwischen geführte Faservorlage bilden.The present invention relates to a device for separating a fiber template from mutually slidable staple fibers with two driven roller pairs, which form two clamping lines for the fiber template guided between them.

Unter Faservorlage aus zueinander gleitbaren Stapelfasern im Sinne dieser Erfindung versteht man jedes in Längsrichtung sich erstreckende Faseraggregat, unabhängig von der Form seines Querschnittes, d. h. sowohl Faseraggregate mit rundem oder zentralsymmetrischem Querschnitt (wie z. B. die Streckenbänder der Stapelfaserspinnerei) als auch mit langgestrecktem Querschnitt (wie z. B. die Faserwatte in einer wickelbildenden Wattemaschine oder das Vlies einer Karde der Stapelfaserspinnerei), in welchem die Fasern in einer beliebigen Form (z. B. als längsgerichtete Einzelfasern oder Flocken) vorliegen, und welche im wesentlichen ihren Zusammenhalt nur durch die Adhäsionskräfte der Fasern zueinander erhalten.A fiber template of mutually slidable staple fibers in the sense of this invention is understood to mean any fiber aggregate that extends in the longitudinal direction, regardless of the shape of its cross section, i. H. Both fiber aggregates with a round or centrally symmetrical cross-section (such as the conveyor belts of the staple fiber spinning mill) as well as with the elongated cross-section (such as the fiber floss in a lap-forming cotton machine or the fleece of a card of the staple fiber spinning mill), in which the fibers in one any shape (e.g. as longitudinal single fibers or flakes), and which essentially only stick together through the adhesive forces of the fibers to each other.

Es ist bekannt, eine Faservorlage damit zu trennen, dass sie durch die Klemmlinien zweier sich folgenden, angetriebenen Walzenpaaren geführt wird, deren Oberflächengeschwindigkeiten (welche für die kontinuierliche Beförderung der Faservorlage ohne einen Verzug derselben gleich groß oder, falls zwischen den Klemmlinien ein bestimmter Verzug geschehen, soll, um den gewollten Verzug verschieden sein können) relativ zueinander in einem solchen Maß geändert werden, daß die Faservorlage auseinandergerissen und somit getrennt wird. Solche Trennmethoden sind z. B. in der DE-C 910 754 und in der GB-A 967 366 beschrieben. Die DE-C 910 754 zeigt auch bereits nach einer Lösung, wie die Trennung durch eine plötzliche Beschleunigung des in Laufrichtung der Faservorlage gesehen vorderen Walzenpaares, d. h. des Auslaufwalzenpaares, bzw. wie sie, nach einer weiteren Lösung, durch die plötzliche Abbremsung des in Laufrichtung gesehen hinteren Walzenpaares, d. h. des Einlaufwalzenpaares, geschehen kann. Diese beiden gezeigten Lösungen arbeiten unter Anwendung mindestens einer Kupplung, mit welcher der Antrieb des Auslaufwalzenpaares mit einer schneller rotierenden Welle für die Beschleunigung angekuppelt werden kann, bzw. der Antrieb des Einlaufwalzenpaares ausgekuppelt und somit das Einlaufwalzenpaar stillgesetzt werden kann.It is known to separate a fiber template by passing it through the clamping lines of two succeeding, driven roller pairs, the surface speeds of which (which are the same for the continuous conveyance of the fiber template without a delay, or if there is a certain delay between the clamping lines) , should be different by the desired delay) relative to each other to such an extent that the fiber template is torn apart and thus separated. Such separation methods are e.g. B. in DE-C 910 754 and in GB-A 967 366. DE-C 910 754 already shows, even after a solution, how the separation is caused by a sudden acceleration of the front pair of rollers as seen in the running direction of the fiber template, i. H. of the outlet roller pair, or as they, after a further solution, by the sudden braking of the rear roller pair seen in the direction of travel, d. H. of the pair of inlet rollers can happen. These two solutions shown work using at least one clutch, with which the drive of the outlet roller pair can be coupled with a faster rotating shaft for acceleration, or the drive of the inlet roller pair can be disengaged and thus the inlet roller pair can be stopped.

Die GB-A 967 366 beschreibt auch Trennmethoden bzw. Vorrichtungen zur Trennung einer Faservorlage, bei denen eine Kupplung benötigt wird, um den Antrieb zu dem in Laufrichtung gesehen hinteren Walzenpaar zu unterbrechen und damit eine Trennung der Faservorlage durch den durch die Betätigung der Kupplung nicht unterbrochenen Antrieb des vorderen Walzenpaares zu bewerkstelligen. Zwar zeigt auch die Fig. 6 der GB-A 967 366 eine andere Lösung, bei der die Faservorlage durch einen gesonderten Antrieb für das vordere Walzenpaar getrennt werden kann, jedoch erfordert diese Lösung genau wie die anderen der GB-A 967 366 beschriebenen Lösungen eine Vielzahl von Zahnrädern, was zu hohen Herstellungskosten führt.GB-A 967 366 also describes separation methods or devices for separating a fiber template, in which a clutch is required to interrupt the drive to the rear pair of rollers as seen in the direction of travel and thus does not separate the fiber template by actuating the clutch interrupted drive of the front pair of rollers. Although Fig. 6 of GB-A 967 366 also shows another solution in which the fiber template can be separated by a separate drive for the front pair of rollers, this solution, just like the other solutions described in GB-A 967 366, requires one Large number of gears, which leads to high manufacturing costs.

Diese bekannten Lösungen gemäß der DE-C 910 754 bzw. der GB-A 967 366 weisen daher den Nachteil auf, daß sie ein kompliziertes Antriebssystem der Walzenpaare, bzw. mindestens eine Kupplung, bedingen, was die Vorrichtung verteuert und einen hohen Aufwand an Unterhaltsarbeiten erfordert.These known solutions according to DE-C 910 754 and GB-A 967 366 therefore have the disadvantage that they require a complicated drive system for the roller pairs, or at least one clutch, which makes the device more expensive and requires a lot of maintenance work required.

Aufgabe der vorliegenden Erfindung ist es also, eine Vorrichtung der eingangs erwähnten Art vorzuschlagen, welche einfach und zuverlässig in der Konstruktion ist, einen geringen Aufwand an Unterhaltsarbeiten und insbesondere keine Kupplung im Antriebssystem beider Walzenpaare verlangt.The object of the present invention is therefore to propose a device of the type mentioned at the outset which is simple and reliable in construction, requires little maintenance work and in particular does not require a clutch in the drive system of both pairs of rollers.

Diese Aufgabe wird mit einer Vorrichtung der eingangs erwähnten Art gelöst, welche dadurch gekennzeichnet ist, daß die zwei Walzenpaare mittels eines flexiblen Kraftübertragungselementes kinematisch gekoppelt sind, und daß das Element um die Antriebsrolle der angetriebenen Walze jedes Walzenpaares und um mindestens zwei weitere ortsfeste Umlenkrollen, sowie um zwei zu einem Rollentandem verbundene, ortsbewegliche Rollen so geführt wird, daß es zwischen den Antriebsrollen eine über eine der Rollen des Tandems führende Schlaufe, und zwischen den zwei Umlenkrollen eine über die andere Rolle des Tandems führende Schlaufe bildet, so daß durch Verschiebung des ortsbeweglichen Rollentandems eine der Schlaufen um einen bestimmten Betrag kürzer, während die andere um den gleichen Betrag länger wird und somit erreicht wird, daß ein Walzenpaar relativ zum andern gedreht werden kann und die zwischen den Klemmlinien geklemmte Faservorlage durch Auseinanderziehen getrennt wird.This object is achieved with a device of the type mentioned, which is characterized in that the two pairs of rollers are kinematically coupled by means of a flexible force transmission element, and that the element around the drive roller of the driven roller of each pair of rollers and at least two further stationary deflection rollers, and around two connected to a roller tandem, movable rollers is guided so that it forms a loop leading over one of the rollers of the tandem loop between the drive rollers, and between the two deflection rollers forms a loop leading over the other role of the tandem, so that by moving the portable Roll tandems make one of the loops shorter by a certain amount, while the other becomes longer by the same amount, so that one pair of rollers can be rotated relative to the other and the fiber template clamped between the clamping lines is separated by pulling apart.

Anhand eines illustrierten Beispieles werden weitere bevorzugte Ausführungsformen der Vorrichtung näher erläutert.Further preferred embodiments of the device are explained in more detail using an illustrated example.

Die Figur zeigt die erfindungsgemässe Vorrichtung in einer schematischen, stark vereinfachten Darstellung, und zwar angewendet, nach einer bevorzugten Ausführungsform der Erfindung, in einer wickelbildenden Wattemaschine des Kämmereivorbereitungsprozesses.The figure shows the device according to the invention in a schematic, greatly simplified representation, and that is applied, according to a preferred embodiment of the invention, in a winding-forming cotton machine of the combing preparation process.

Bei einer solchen Maschine wird eine Mehrzahl von Stapelfaserbändern (im Beispiel sind nur 2 dargestellt) aus den Vorlagekannen 1 und 2 (welche in der Figur nur schematisch und in einem stark verkleinerten Massstab dargestellt sind) herausgezogen und mit geeigneten, nicht gezeigten Mitteln doubliert, d. h. durch seitliches Aneinanderreihen zu einer breiten Faservorlage 3 vereinigt. Eine solche Faservorlage 3 weist normalerweise eine Breite von ca. 30 cm auf. Diese Faservorlage 3, welche eine dicke Watte bildet, wird auf einen Wickel 4 aufgewunden. Dies geschieht dadurch, dass die Faservorlage 3 am Anfang des Aufwickelprozesses auf der Oberfläche der Hülse 5 in irgend einer Weise befestigt wird. Die Hülse 5 stützt sich auf eine Reibungswalze 6, welche mit später noch erwähnten Mitteln angetrieben wird, und wird durch diese durch Reibungsschluss in Rotation versetzt. Dabei wickelt sich die Faservorlage 3 um die Hülse 5 auf und bildet einen im Durchmesser immer grösser werdenden Wickel 4. Die Hülse 5 muss sich natürlich gegenüber der Reibungswalze 6 entsprechend dem grösser werdenden Durchmesser verschieben, was durch entsprechende Haltemittel gewährleistet wird. Im gezeigten Beispiel weisen solche Haltemittel die Form von zwei zur Reibungswalze 6 senkrecht stehenden Führungen 7, 8 auf, welche die Hülse 5 an beiden Rändern (nur ein Rand dargestellt) führen. Selbstverständlich können andere Arten von Haltemitteln für die Hülse 5 vorgesehen sein, wie z. B. Schliessarme, welche die Hülse 5 längs einer kreisförmigen Bahn führen, usw.In such a machine, a plurality of staple fiber tapes (only 2 are shown in the example) are pulled out of the supply cans 1 and 2 (which are only shown schematically and on a much reduced scale in the figure) and doubled, that is, by suitable means, not shown united by side by side to a wide fiber template 3. Such a fiber template 3 normally has a width of approximately 30 cm. This fiber template 3, which forms a thick cotton wool, is wound onto a roll 4. This happens that the fiber template 3 is attached to the surface of the sleeve 5 in any way at the beginning of the winding process. The sleeve 5 is supported on a friction roller 6, which is driven by means mentioned later, and is set in rotation by this by frictional engagement. The fiber template 3 winds up around the sleeve 5 and forms a winder 4 that becomes ever larger in diameter. The sleeve 5 must of course shift relative to the friction roller 6 in accordance with the widening diameter, which is ensured by appropriate holding means. In the example shown, such holding means have the form of two guides 7, 8 which are perpendicular to the friction roller 6 and which guide the sleeve 5 on both edges (only one edge shown). Of course, other types of holding means for the sleeve 5 can be provided, such as. B. closing arms, which guide the sleeve 5 along a circular path, etc.

Ebenfalls kann es vorgesehen sein, dass die Hülse 5 mit passenden Mitteln (nicht gezeigt), zwecks Erhöhung der Mitnahme durch die Reibungswalze 6, an diese angedrückt wird. Weiter kann es vorgesehen sein, dass der Antrieb des Wickels 4 nicht mittels Reinbungsschluss durch die Reibungswalze 6 erfolgt, sondern dass die Hülse 5 selber mittels nicht gezeigter Antriebsorgane angetrieben wird, wobei dann durch geeignete Steuermittel dafür gesorgt wird, dass die Drehzahl des Wickels 4 dem grösser werdenden Durchmesser desselben kontinuierlich angepasst wird. Auch gemischte Antriebsarten, d. h. solche bei welchen der Wickel 4 durch direkten Antrieb der Hülse 5 und durch eine Reibungswalze kombiniert in Rotation versetzt wird, sind im Rahmen dieser Erfindung anwendbar.It can also be provided that the sleeve 5 is pressed onto it by suitable means (not shown) in order to increase the entrainment by the friction roller 6. It can further be provided that the drive of the winding 4 does not take place by means of cleaning by the friction roller 6, but that the sleeve 5 itself is driven by means of drive elements (not shown), with suitable control means then ensuring that the speed of the winding 4 corresponds to that increasing diameter of the same is continuously adjusted. Mixed drive types, i. H. those in which the winding 4 is set in rotation by direct drive of the sleeve 5 and combined by a friction roller can be used in the context of this invention.

Unmittelbar vor dem Wickel 4, in Laufrichtung der Faservorlage 3 gesehen, sind erfindungsgemäss zwei Walzenpaare 9/10 und 11/12 vorgesehen, welche zwei Klemmlinien m und n für die dazwischen geführte Faservorlage 3 bilden. Die unteren Walzen 9 und 11 der Walzenpaare sind dabei angetriebene Walzen, wie es noch genauer erklärt wird, und sind mit nicht gezeigten ortsfesten Lagern in einem ebenfalls nicht gezeigten Gestell der Maschine um die Achsen 13 und 14 drehbar gelagert.Immediately in front of the roll 4, seen in the direction of travel of the fiber template 3, two pairs of rollers 9/10 and 11/12 are provided according to the invention, which form two clamping lines m and n for the fiber template 3 guided between them. The lower rollers 9 and 11 of the roller pairs are driven rollers, as will be explained in more detail, and are rotatably supported about the axes 13 and 14 in a frame of the machine, also not shown, with stationary bearings, not shown.

Die oberen Walzen 10 und 12 der Walzenpaare sind hingegen als Druckwalzen ausgebildet, welche in einem mit vertikalen Führungen für die entsprechenden Achsen 15 und 16 versehenen, ortsfesten Körper 17 senkrecht beweglich geführt werden und mittels Druckfeder 18 gegen die angetriebenen Walzen 9 bzw. 11 angedrückt werden.The upper rollers 10 and 12 of the roller pairs, on the other hand, are designed as pressure rollers, which are guided vertically movably in a stationary body 17 provided with vertical guides for the corresponding axes 15 and 16 and are pressed against the driven rollers 9 and 11 by means of compression spring 18 .

Die zwei angetriebenen Walzen 9 und 11 der Walzenpaare 9/10 und 11/12 sind nun erfindungsgemäss mittels eines flexiblen Kraftübertragungselementes 19 kinematisch gekoppelt, wobei das Element 19 vorzugsweise ein schlupffrei arbeitendes Element ist. Nach einer bevorzugten Variante der Erfindung ist das Kraftübertragungselement 19 eine Kette oder ein Zahnriemen, welche bzw. welcher mit entsprechenden Kettenrädern oder Zahnriemenscheiben, zwecks schlupffreier Kraft- und Bewegungsübertragung, im Eingriff steht.The two driven rollers 9 and 11 of the roller pairs 9/10 and 11/12 are now kinematically coupled according to the invention by means of a flexible force transmission element 19, the element 19 preferably being a slip-free working element. According to a preferred variant of the invention, the force transmission element 19 is a chain or a toothed belt which is in engagement with corresponding chain wheels or toothed belt pulleys for the purpose of non-slip transmission of force and movement.

Das Kraftübertragungselement 19 wird dabei um die Antriebsrolle 20 bzw. 21 der angetriebenen Walze 9 bzw. 11 jedes Walzenpaares und um mindestens zwei weitere ortsfeste Umlenkrollen 22 und 23, deren entsprechende Achsen 24 und 25 im nicht gezeigten Gestell der Maschine drehbar gelagert sind, geführt. Weiter sind in der Laufbahn des Kraftübertragungselementes 19 zwei zu einem Rollentandem 26 verbundene, ortsbewegliche Rollen 27 und 28 vorhanden. Die Achsen 29 und 30 der Rollen 27 und 28 sind zu diesem Zweck in einem gemeinsamen Lagerkörper 31 drehbar gelagert. Durch diese Anordnung der Rollen 20, 21, 22, 23, 27 und 28 bildet das Kraftübertragungselement 19 zwischen den Antriebsrollen 20 und 21 und der Rolle 27 und zwischen den zwei Umlenkrollen 22, 23 und der Rolle 28 je eine Schlaufe 32 und 33. Da die Rollen 20, 21, 22 und 23 ortsfest gelagert sind, ist der Umfang des flexiblen Kraftübertragungselementes 19 unabhängig von der Lage des Rollentandems 26. Durch eine Verschiebung des Tandems 26, z. B. von der in der Figur mit ausgezogenen Linien dargestellten Lage A in die mit gestrichelten Linien dargestellte Lage B, wird also eine Verkürzung der Schlaufe 32 um die Strecke L und eine Verlängerung der Schlaufe 33 um die gleiche Strecke L erreicht, was allerdings die relative Verdrehung eines der Walzenpaare 9/10 und 11/12 gegenüber dem anderen bedingt.The force transmission element 19 is guided around the drive roller 20 or 21 of the driven roller 9 or 11 of each pair of rollers and at least two further stationary deflection rollers 22 and 23, the corresponding axes 24 and 25 of which are rotatably mounted in the frame of the machine, not shown. Furthermore, two movable rollers 27 and 28 connected to a roller tandem 26 are present in the track of the force transmission element 19. For this purpose, the axes 29 and 30 of the rollers 27 and 28 are rotatably mounted in a common bearing body 31. With this arrangement of the rollers 20, 21, 22, 23, 27 and 28, the force transmission element 19 forms a loop 32 and 33 between the drive rollers 20 and 21 and the roller 27 and between the two deflection rollers 22, 23 and the roller 28 the rollers 20, 21, 22 and 23 are fixed in place, the scope of the flexible force transmission element 19 is independent of the position of the roller tandem 26. By moving the tandem 26, z. B. from the position A shown in the figure with solid lines to the position B shown with dashed lines, a shortening of the loop 32 by the distance L and an extension of the loop 33 by the same distance L is achieved, but this is relative Conditional rotation of one of the roller pairs 9/10 and 11/12 relative to the other.

Für die Verschiebung des Tandems 26 ist in Fig. 1 ein System Kolben/Zylinder 34, 35 vorgesehen, dessen Kolbenstange 36 direkt mit dem Lagerkörper 31 verbunden ist. Der Zylinder 35 ist mittels einer Leitung 37 mit Ventil 38 mit einer Druckquelle (nicht gezeigt) für ein geeignetes Fluidum verbunden und beinhaltet eine Rückstellfeder 39. Durch das Oeffnen des Ventils 38 strömt das Druckmittel von unten in den Zylinder 35 hinein und schiebt den Kolben 34 samt Kolbenstange 36, unter Ueberwindung der durch die Rückstellfeder 39 ausgeübten Kraft, von unten nach oben, womit der Lagerkörper 31 z. B. von der Lage A zur Lage B verschoben wird. Durch Ablassen des Druckes im Zylinder 35 kann dann der Kolben 34 samt Lagerkörper 31 unter dem Einfluss der Kraft der Rückstellfeder 39 in seine Anfangslage zurückgebracht werden. Selbstverständlich sind für die Verschiebung des Tandems 26 auch andere Methoden (z. B. rein mechanische Antriebe mit Zahnstange und Ritzel, nicht gezeigt) geeignet.For the displacement of the tandem 26, a piston / cylinder 34, 35 system is provided in FIG. 1, the piston rod 36 of which is connected directly to the bearing body 31. The cylinder 35 is connected by means of a line 37 with a valve 38 to a pressure source (not shown) for a suitable fluid and contains a return spring 39. When the valve 38 is opened, the pressure medium flows into the cylinder 35 from below and pushes the piston 34 together with piston rod 36, overcoming the force exerted by the return spring 39, from bottom to top, with which the bearing body 31 z. B. is shifted from position A to position B. By releasing the pressure in the cylinder 35, the piston 34 together with the bearing body 31 can then be returned to its initial position under the influence of the force of the return spring 39. Of course, other methods (e.g. purely mechanical drives with toothed rack and pinion, not shown) are also suitable for moving the tandem 26.

Für den Antrieb der Rollen und des Kraftübertragungselementes 19 ist im Beispiel der Figur vorgesehen, dass die Achse 24 der Umlenkrolle 22 mit einer Riemenscheibe 40 für einen Riemen 41 ausgerüstet ist. Der Riemen 41 wird durch einen Motor 42 mit Riemenscheibe 43 angetrieben und setzt somit das Kraftübertragungselement 19 in Umlauf. Weiter ist es vorgesehen, dass die Reibungswalze 6, ausgehend von der Achse 14 der Walze 11, mittels Riemenscheibe 44, Riemen 45 und Riemenscheibe 46 angetrieben wird, sodass zwischen der Walze 11 und der Reibungswalze 6 eine kinematische Kopplung besteht. Der Riemen 45 wird dabei vorzugsweise als Zahnriemen gewählt. Anstatt eines Riemenantriebs kann für die Reibungswalze 6 natürlich auch ein Kettenantrieb in Frage kommen. Das Verhältnis der Durchmesser der Riemenscheiben 44 und 46 wird dabei im wesentlichen gleich dem Verhältnis zwischen den Durchmessern der Walze 11 und der Reibungswalze 6 gewählt, sodass zwischen der Klemmlinie n und der Reibungswalze 6 die Faservorlage 3 keinem Verzug (wenn man von einem eventuellen, hier vernachlässigbaren Anspannungsverzug absieht) unterworfen wird.For driving the rollers and the force transmission element 19, it is provided in the example of the figure that the axis 24 of the deflection roller 22 is equipped with a pulley 40 for a belt 41. The belt 41 is driven by a motor 42 with a pulley 43 and thus sets the power transmission element ment 19 in circulation. It is further provided that the friction roller 6, starting from the axis 14 of the roller 11, is driven by means of the pulley 44, belt 45 and pulley 46, so that there is a kinematic coupling between the roller 11 and the friction roller 6. The belt 45 is preferably selected as a toothed belt. Instead of a belt drive, a chain drive can of course also be used for the friction roller 6. The ratio of the diameters of the pulleys 44 and 46 is chosen essentially equal to the ratio between the diameters of the roller 11 and the friction roller 6, so that between the clamping line n and the friction roller 6 the fiber template 3 does not warp (if one is from a possible here negligible tension delay) is subjected.

Die hier gezeigte Art von Antrieb des Kraftübertragungselementes 19 und der Reibungswalze 6 ist nicht die einzige, welche im Rahmen dieser Erfindung in Frage kommen kann : so könnte das Element 19 z. B. durch Antrieb der Achse 13 der Walze 9 angetrieben werden, während die Reibungswalze 6 durch kinematische Kopplung mit der Achse 25 der Umlenkrolle 23 angetrieben werden könnte.The type of drive of the power transmission element 19 and the friction roller 6 shown here is not the only one that can come into question in the context of this invention. B. driven by driving the axis 13 of the roller 9, while the friction roller 6 could be driven by kinematic coupling with the axis 25 of the guide roller 23.

Weiter sei noch bemerkt, dass es nicht zwingend ist, dass die Walzen 9 und 11 (wie in der Figur gezeigt) den gleichen Durchmesser aufweisen und/oder mittels gleich grossen Antriebsrollen 20 und 21 kinematisch gekoppelt sind. Wenn dies der Fall ist, dann haben beide angetriebenen Walzen 9 und 11 der Walzenpaare 9/10 und 11/12 die gleiche Oberflächengeschwindigkeit, womit die Faservorlage 3 beim Umlauf des Kraftübertragungselementes 19 um das im Raum stillstehende Tandem 26 zwischen den Klemmlinien m und n ohne Verzüge weitertransportiert wird. Will man hingegen, dass zwischen den Klemmlinien m und n die Faservorlage 3 immer, beim Betrieb der Vorrichtung, einem bestimmten Verzug unterworfen wird, dann braucht man nur die oben genannten Durchmesser der Walzen 9 und 11 und/oder der Antriebsrollen 20 und 21 entsprechend zu wählen : die Walzenpaare 9/10 und 11/12 verhalten sich dann in bekannter wie das Einzugswalzenpaar 9/10, bzw. das Austrittswalzenpaar 11/12, des Streckfeldes eines Streckwerkes.It should also be noted that it is not imperative that the rollers 9 and 11 (as shown in the figure) have the same diameter and / or are kinematically coupled by means of drive rollers 20 and 21 of the same size. If this is the case, then both driven rollers 9 and 11 of the roller pairs 9/10 and 11/12 have the same surface speed, with which the fiber template 3 during the rotation of the force transmission element 19 around the stationary tandem 26 between the clamping lines m and n without Delays are transported further. If, on the other hand, you want the fiber template 3 to always be subjected to a certain distortion between the clamping lines m and n when the device is in operation, then only the diameters of the rollers 9 and 11 and / or the drive rollers 20 and 21 mentioned above are required accordingly choose: the roller pairs 9/10 and 11/12 then behave in a more familiar manner than the feed roller pair 9/10 or the outlet roller pair 11/12 of the drafting field of a drafting system.

In einer bevorzugten Variante der Vorrichtung ist es weiter vorgesehen, dass während der Verschiebung des Rollentandems 26 eines der Walzenpaare gegenüber dem andern stilIgehalten wird, womit die relative Drehung des zweiten Walzenpaares gegenüber einem stillstehenden Rollenpaar erfolgen muss. Dies wird z. B. in der gezeigten Vorrichtung der Figur dadurch realisiert, dass die Walze 9 mittels einer durch ein System Zylinder 47/Kolben 48 und Kolbenstange 49 betätigten Bremse 50 direkt gebremst wird. Die Betätigung des Kolbens 48 erfolgt mittels Leitung 51 und Ventil 52. Diese gezeigte Art, um das Walzenpaar 9/10 stillzuhalten, ist nur eine von vielen Möglichkeiten, welche verwendet werden können : so wäre z. B. die Anwendung eines sogenannten Stoppmotors, d. h. eines mit einer Bremse ausgerüsteten Motors, anstelle von Motor 42 ebenfalls eine sehr gute Lösung.In a preferred variant of the device, it is further provided that one of the roller pairs is kept in relation to the other during the displacement of the roller tandem 26, so that the relative rotation of the second roller pair must take place in relation to a stationary roller pair. This is e.g. B. realized in the device of the figure shown that the roller 9 is braked directly by means of a brake 50 operated by a system cylinder 47 / piston 48 and piston rod 49. The piston 48 is actuated by means of the line 51 and the valve 52. B. the use of a so-called stop motor, d. H. a motor equipped with a brake, also a very good solution instead of motor 42.

Die gezeigte Vorrichtung funktioniert nun folgendermassen :

  • Im Normalbetrieb des Wickels 4, d. h. während der Aufbauphase desselben, sind die Zylinder 35 und 47 drucklos, d. h. das Tandem 26 steht in seiner tieferen Lage A, und die Walze 9 ist nicht gebremst.
The device shown now works as follows:
  • In normal operation of the roll 4, ie during the build-up phase thereof, the cylinders 35 and 47 are depressurized, ie the tandem 26 is in its lower position A, and the roller 9 is not braked.

Der Motor 42 treibt dabei über den Riemen 41 und das Kraftübertragungselement 19 die Walzenpaare 9/10 und 11/12 an, welche die Faservorlage 3 kontinuierlich aus den Kannen 1 und 2 herausziehen und zum Wickel 4 befördern. Der Wickel 4 rotiert durch Reibung auf der ebenfalls vom Motor 42 angetriebenen Reibungswalze 6, und die Faservorlage 3 wird auf die Wickeloberfläche aufgewunden.The motor 42 drives the roller pairs 9/10 and 11/12 via the belt 41 and the force transmission element 19, which continuously pull the fiber template 3 out of the cans 1 and 2 and convey them to the winding 4. The winding 4 rotates by friction on the friction roller 6, which is also driven by the motor 42, and the fiber template 3 is wound onto the winding surface.

Wenn der Wickel 4 den vorgesehenen Enddurchmesser erreicht hat, wird der Motor 42 abgestellt. Dabei bleibt die Faservorlage 3 zwischen den Klemmlinien m und n und von der Klemmlinie n bis zum Wickel 4 durchgehend erhalten.When the winding 4 has reached the intended final diameter, the motor 42 is switched off. The fiber template 3 between the clamping lines m and n and from the clamping line n to the roll 4 is maintained throughout.

Nun muss der Wickel 4 gegen eine neue, leere Hülse 5 ausgewechselt und die Faservorlage 3 dabei getrennt werden.Now the winding 4 has to be exchanged for a new, empty sleeve 5 and the fiber template 3 has to be separated.

Zu diesem Zweck werden simultan oder kurz nacheinander die Ventile 52 und 38 betätigt, womit die Bremse 50 in Aktion tritt und das Rollentandem 26 von seiner unteren Lage A in die gestrichelt gezeichnete obere Lage B verschoben wird. Durch die Verschiebung des Rollentandems 26 um die Strecke L bei gebremster Walze 9 müssen die Antriebsrolle 21 und die Umlenkrolle 23 eine Rotation im Uhrzeigersinn ausführen, was die Verdrehung der Walzen 11, 12 im Sinne einer Beförderung der Faservorlage 3 von links nach rechts zur Folge hat. Da die Walzen 9, 10 still stehen, wird die Faservorlage 3 zwischen den Klemmlinien m und n durch Auseinanderziehen getrennt, was der Zweck der Erfindung ist.For this purpose, the valves 52 and 38 are actuated simultaneously or in quick succession, with which the brake 50 comes into action and the roller tandem 26 is shifted from its lower position A to the upper position B shown in broken lines. By moving the roller tandem 26 by the distance L when the roller 9 is braked, the drive roller 21 and the deflecting roller 23 must rotate clockwise, which causes the rollers 11, 12 to rotate in the sense of conveying the fiber template 3 from left to right . Since the rollers 9, 10 stand still, the fiber template 3 is separated between the clamping lines m and n by pulling apart, which is the purpose of the invention.

Zwischem dem Verschiebungsweg L des Tandems 26, dem Durchmesser d der Antriebsrolle 21 der angetriebenen Walze 11 des weiter gedrehten Walzenpaares 11/12, dem Durchmesser D der angetriebenen Walze 11 und der maximalen Stapellänge s der Faservorlage 3 besteht dabei vorzugsweise folgende Beziehung

Figure imgb0001
Between the displacement path L of the tandem 26, the diameter d of the drive roller 21 of the driven roller 11 of the further rotated roller pair 11/12, the diameter D of the driven roller 11 and the maximum stack length s of the fiber template 3 there is preferably the following relationship
Figure imgb0001

Durch Einhaltung dieser Beziehung wird gewährleistet, dass die Verschiebung der Faservorlage 3 nach rechts durch das Walzenpaar 11/12 grösser als die maximale Stapellänge s ist, d. h. dass die Faservorlage komplett getrennt wird.Compliance with this relationship ensures that the displacement of the fiber template 3 to the right by the pair of rollers 11/12 is greater than the maximum stack length s, i. H. that the fiber template is completely separated.

Es sei bemerkt, dass mit der Rotation der Walze 11 immer auch die Reibungswalze 6, welche mit der Walze 11 kinematisch gekoppelt ist, um dieselbe oberflächliche Strecke weitergedreht wird, sodass die Faservorlage 3 immer ordnungsgemässauf die Oberfläche des Wickels 4 aufgewunden wird.It should be noted that with the rotation of the roller 11, the friction roller 6, which is kinematically coupled to the roller 11, is also rotated by the same superficial distance, so that the fiber template 3 is always in order is wound onto the surface of the winding 4.

Nach der erfolgten Trennung der Faservorlage 3 zwischen den Klemmlinien m und n kann nun das abgetrennte Vorlage-Ende (nicht gezeigt) auf die Oberfläche des Wickels 4 nach zwei Methoden aufgewickelt werden, womit der Wickel 4 für seine Auswechslung bereit gestellt wird.After the fiber template 3 has been separated between the clamping lines m and n, the severed template end (not shown) can now be wound onto the surface of the roll 4 by two methods, thus providing the roll 4 for its replacement.

Nach einer ersten Methode kann dazu der Motor 42 für eine kurze Zeit wieder in Betrieb genommen werden ; dadurch werden, wie während des Normalbetriebes, die Walzen 9, 11 und 6 angetrieben, womit die Faservorlage vor und nach der Trennstelle von links nach rechts verschoben wird. Wenn das wickelseitige Vorlageende die Oberfläche des Wickels 4 erreicht hat, wird der Motor 42 wieder abgestellt und der Wickel 4 entweder von Hand oder automatisch, mit nicht gezeigten, bekannten Mitteln, gegen eine neue, leere Hülse 5 ausgetauscht.According to a first method, the motor 42 can be put into operation again for a short time; as a result, as during normal operation, the rollers 9, 11 and 6 are driven, with the result that the fiber feed is shifted from left to right before and after the separation point. When the winding-side template end has reached the surface of the winding 4, the motor 42 is switched off again and the winding 4 is exchanged for a new, empty sleeve 5 either manually or automatically, using known means, not shown.

Nach einer zweiten Methode kann es vorgesehen werden, dass der Verschiebungsweg L des Tandems 26 so gross gewählt wird, dass durch die relative Rotation der Walzen 11, 12 und 6 gegenüber den Walzen 9, 10 nicht nur die Faservorlage 3 getrennt würde, sondern dass die Trennstelle der Faservorlage 3, bzw. das wickelseitige Ende derselben, bis zur Oberfläche des Wickels 4 gefördert wird, während die Walzen 9 und 10 still stehen. Auch hier kann die Wickelwechseloperation in bekannter Art erfolgen.According to a second method, it can be provided that the displacement path L of the tandem 26 is chosen so large that not only the fiber template 3 would be separated by the relative rotation of the rollers 11, 12 and 6 compared to the rollers 9, 10, but that the Separation point of the fiber template 3, or the end thereof on the winding side, is conveyed to the surface of the winding 4, while the rollers 9 and 10 are stationary. Here, too, the winding change operation can be carried out in a known manner.

Die Rückstellung des Tandems 26 von der Stellung B zur Stellung des Normalbetriebes A (was von der Rückstellfeder 39 bei entlastetem Zylinder 35 besorgt wird) kann in diesem zweiten Fall (bei welchem zwischen der Klemmlinie n der Walze 11, 12 keine Faservorlage 3 bleibt) sofort während der Wechseloperation erfolgen ; es spielt hier nämlich keine Rolle, ob die Walzen 11 und 12 dazu sich zurückdrehen (im Gegenuhrzeigersinn) müssen. Wenn dagegen nach der erstgenannten Methode gearbeitet wird, bei welcher die Faserwatte 3 bereits vor der Wechseloperation durch die Klemmlinie n des Walzenpaares 11/12 durchgezogen wird, muss die Zurückstellung des Rollentandems 26 von der Lage B in die Lage A während des Normalbetriebes, d. h. während der folgenden Aufbauphase für den nächsten Wickel 4 erfolgen. Dabei führt man diese Bewegung mit einer solch kleinen Geschwindigkeit gegenüber der Oberflächengeschwindigkeit der Walzen 9, 11 und 6 aus, dass die naturgemäss gegebene Aenderung der Fasermasse der Faservorlage 3 nach den Walzen 11, 12 vernachlässigbar ist.The return of the tandem 26 from the position B to the position of normal operation A (which is provided by the return spring 39 when the cylinder 35 is unloaded) can in this second case (in which no fiber template 3 remains between the clamping line n of the roller 11, 12) immediately done during the change operation; it does not matter here whether the rollers 11 and 12 have to turn back (counterclockwise). If, on the other hand, the first method is used, in which the fiber wadding 3 is already pulled through the clamping line n of the pair of rollers 11/12 before the change operation, the resetting of the roller tandem 26 from position B to position A during normal operation, i. H. during the following construction phase for the next winding 4. This movement is carried out at such a low speed compared to the surface speed of the rollers 9, 11 and 6 that the change in the fiber mass of the fiber template 3 after the rollers 11, 12, which is naturally given, is negligible.

Claims (10)

1. Apparatus for severing a fibre layer of mutually slideable staple fibres, the apparatus having two driven pairs of rolls, which form two nip lines for the fibre layer guided therebetween, characterised in that the two pairs of rolls (9/10 ; 11/12) are kinematically coupled by means of a flexible power transmitting element (19), and in that the element (19) is guided about the drive roller (20, and 21 respectively) for the driven roll (9, and 11 respectively) of each pair of rolls (9/10 ; 11/12), and about at least two further deflecting rollers (22, 23) of fixed location, as well as about two rollers (27, 28) of movable location which are connected to form a roller tandem (26), in such manner that the flexible power transmitting element forms a loop (32) extending over one (27) of the rollers (27, 28) of the tandem (26) between the drive rollers (20, 21), and a loop (33) over the other roller (28) of the tandem (26) between the two deflecting rollers (22, 23), such that through displacement of the movable roller tandem (26) one of the loops (32, or 33 respectively) is shortened by a certain amount (L) while the other one (33, or 32 respectively) is lengthened by the same amount (L), and thus that one pair of rolls (11, 12) can be rotated relative to the other (9, 10), and the fibre layer (3) clamped between the nip lines (m, n) can be severed by being pulled apart.
2. Apparatus according to claim 1, characterised in that the power transmitting element (19) operates without slippage.
3. Apparatus according to claim 2, characterised in that the element which operates without slippage is a chain or a toothed belt.
4. Apparatus according to claim 1, characterised in that one of the pairs of rolls (9/10 ; 11/12) is held stationary during the movement of the roller tandem (26).
5. Apparatus according to claim 4, characterised in that the rear pair of rolls (9, 10) as seen in the direction of movement is held stationary during the displacement of the roller tandem (26), and in that a friction roller (6) which winds the fibre layer (3) into a coil (4) is kinematically coupled with the driven roll (11) of the front pair of rolls (11, 12), whereby even after severing of the fibre layer (3) the latter can always be wound in correct manner onto the surface of the coil (4).
6. Apparatus according to claim 4, characterised in that the following relationship applies :
Figure imgb0003
where
L = extent of displacement of the tandem (26),
s = maximum staple length of the fibres forming the fibre layer (3),
D = diameter of the driven roll (11) of the pair of rolls (11/12) driven on by the movement of the roller tandem (26),
d = diameter of the drive roller (21) for the driven roll (11).
7. Apparatus in accordance with one of the preceding claims, characterised in that the roller- tandem (26) is moved by a piston/cylinder arrangement (34, 35) actuated by a fluid.
8. Apparatus in accordance with claim 7, characterised in that the piston/cylinder arrangement (34, 35) is reset by a resetting spring (39).
9. Apparatus in accordance with one of the claims 4, 5, 7 and 8, characterised in that the driven roll (9) of the rear pair of rolls (9, 10) as seen in the direction of movement of the fibre layer (3) is braked during the displacement of the roller tandem (26) by means of a brake (50) actuated by a fluid.
10. Use of the apparatus in accordance with claim 1, characterised in that the apparatus is incorporated in a coil forming of the combing preparatory process and is used for severing the fibre layer (3) as the coil is changed.
EP80901271A 1979-07-09 1981-01-26 Apparatus for severing a fibe layer of staple fibres Expired EP0031830B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80901271T ATE7311T1 (en) 1979-07-09 1980-07-05 DEVICE FOR SEPARATING A FIBER PATTERN FROM STAPLE FIBERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH637879 1979-07-09
CH6378/79 1979-07-09

Publications (2)

Publication Number Publication Date
EP0031830A1 EP0031830A1 (en) 1981-07-15
EP0031830B1 true EP0031830B1 (en) 1984-05-02

Family

ID=4308634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80901271A Expired EP0031830B1 (en) 1979-07-09 1981-01-26 Apparatus for severing a fibe layer of staple fibres

Country Status (10)

Country Link
EP (1) EP0031830B1 (en)
JP (1) JPS56500852A (en)
AT (1) ATE7311T1 (en)
AU (1) AU6022380A (en)
BR (1) BR8008746A (en)
DE (1) DE3067684D1 (en)
ES (1) ES8105795A1 (en)
IN (1) IN153136B (en)
IT (1) IT1131941B (en)
WO (1) WO1981000118A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630925A1 (en) * 1996-07-31 1998-02-05 Rieter Ag Maschf Winding device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807239C2 (en) * 1988-03-05 1996-08-29 Truetzschler Gmbh & Co Kg Device for depositing a sliver supplied by a spinning preparation machine
GB2255353B (en) * 1991-05-01 1994-11-30 Hollingsworth On Wheels John D Drive between an autoleveller and a coiler
EP0544425A1 (en) * 1991-11-26 1993-06-02 Hollingsworth (U.K.) Limited A coiler
ATE290504T1 (en) * 1997-01-25 2005-03-15 Voith Paper Patent Gmbh WINDING MACHINE AND METHOD FOR CONTINUOUSLY WINDING A WEB OF MATERIAL
DE19702715A1 (en) * 1997-01-25 1998-07-30 Voith Sulzer Papiermasch Gmbh Continuous winding machine for paper/cardboard
CH695690A5 (en) * 2002-07-25 2006-07-31 Rieter Ag Maschf Drive for calender rolls.
CH719790A1 (en) * 2022-06-20 2023-12-29 Rieter Ag Maschf Device for producing a cotton wrap.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE456591A (en) *
IT649415A (en) * 1960-05-06
FR1362599A (en) * 1963-04-23 1964-06-05 Schlumberger Cie N Ribbon cutter for textile machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630925A1 (en) * 1996-07-31 1998-02-05 Rieter Ag Maschf Winding device

Also Published As

Publication number Publication date
IN153136B (en) 1984-06-02
EP0031830A1 (en) 1981-07-15
BR8008746A (en) 1981-04-28
IT8023345A0 (en) 1980-07-09
JPS56500852A (en) 1981-06-25
WO1981000118A1 (en) 1981-01-22
ES493612A0 (en) 1981-06-16
IT1131941B (en) 1986-06-25
DE3067684D1 (en) 1984-06-07
ES8105795A1 (en) 1981-06-16
ATE7311T1 (en) 1984-05-15
AU6022380A (en) 1981-01-15

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