EP0393360B1 - Method and device for the production of fibre ribbons with parallel fibre position out of tangled fibre collectives - Google Patents

Method and device for the production of fibre ribbons with parallel fibre position out of tangled fibre collectives Download PDF

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Publication number
EP0393360B1
EP0393360B1 EP90105070A EP90105070A EP0393360B1 EP 0393360 B1 EP0393360 B1 EP 0393360B1 EP 90105070 A EP90105070 A EP 90105070A EP 90105070 A EP90105070 A EP 90105070A EP 0393360 B1 EP0393360 B1 EP 0393360B1
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EP
European Patent Office
Prior art keywords
fiber web
carding
drum
fiber
carding drum
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
EP90105070A
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German (de)
French (fr)
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EP0393360A1 (en
Inventor
René Gloor
Michael Müller
Alfred Beeler
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Siegfried Peyer AG
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Siegfried Peyer AG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Description

Die Erfindung bezieht sich auf ein Verfahren gemäss dem Oberbegriff des Anspruchs 1 und eine Vorrichtung gemäss dem Oberbegriff des Anspruchs 3.The invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 3.

Für die qualitative und quantitative Prüfung von textilen Fasern existieren zahlreiche Verfahren und Apparaturen. Bei vielen Prüfverfahren kann das ungeordnete Fasermaterial, z.B. Baumwolle in Flockenform, nicht sofort gemessen werden, sondern ist zunächst in Faserbänder mit parallelisierter Faserlage aufzubereiten. Solche vorparallelisierte Faserbänder dienen somit als Vorlage für alle Prüfgeräte die als Prüfgut Fasern mit parallelisierter Faserlage benötigen.
Das sind zum Beispiel:

  • Faserrichter zur Endenordnung von Faserbärten.
  • Bürststationen für Faserbärte ohne Endenordnung.
  • Zugprüfgeräte zur Bestimmung der Bündelreissfestigkeit und Dehnung.
  • Optische Scanner, wie Bilddatenanalysegeräte.
  • Faserreifeprüfgeräte.
  • Faserfeinheitsprüfgeräte.
  • Faserklassiergeräte etc.
There are numerous methods and apparatus for the qualitative and quantitative testing of textile fibers. In many test methods, the disordered fiber material, e.g. cotton in flake form, cannot be measured immediately, but must first be processed into fiber tapes with a parallel fiber layer. Such pre-parallelized fiber tapes thus serve as a template for all test devices that require fibers with a parallelized fiber layer as test material.
For example:
  • Fiber judge for the end arrangement of whiskers.
  • Brush stations for beards without end order.
  • Tensile testers for determining the bundle tear strength and elongation.
  • Optical scanners, such as image data analyzers.
  • Maturity testers.
  • Fineness testers.
  • Fiber classifiers etc.

Es sind bereits mechanisierte Geräte zur Herstellung solcher Faserbänder bekannt, beispielsweise aus dem Sonderdruck G.Spiridonow in Melliand Textilberichte 59 (1978). Dieser bekannte Apparat besteht im wesentlichen aus einem einfachen Walzenstreckwerk, d.h. einem Speisewalzenpaar und einem Ausgangswalzenpaar. Es versteht sich von selbst, dass mit dieser einfachen von Hand betriebenen Vorrichtung die Herstellung von Faserbändern mit parallelisierter Faserlage zeitraubend und wenig reproduzierbar ist. Der Handbetrieb erfordert ein hohes Geschick und bewirkt zudem eine ständige Berührung des Rohstoffes mit der blossen Haut, so dass eine Kontamination mit Schweiss nicht verhindert werden kann.Mechanized devices for producing such slivers are already known, for example from the special print G.Spiridonow in Melliand Textilberichte 59 (1978). This known apparatus essentially consists of a simple roller drafting system, i.e. a pair of feed rollers and a pair of output rollers. It goes without saying that with this simple, hand-operated device, the production of fiber tapes with a parallelized fiber layer is time-consuming and not very reproducible. Manual operation requires a high level of skill and also causes the raw material to come into constant contact with the bare skin, so that contamination with sweat cannot be prevented.

Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung von Faserbändern mit parallelisierter Faserlage aus Wirrfaserkollektiven zu schaffen, welches vollautomatisch und ohne Faserbeschädigung arbeitet.The invention seeks to remedy this. The invention has for its object to provide a method for producing fiber tapes with parallelized fiber layer from random fiber collectives, which works fully automatically and without fiber damage.

Die Erfindung löst die gestellte Aufgabe mit einem Verfahren, welches die Merkmale des Anspruchs 1 aufweist, sowie einer Vorrichtung, welche die Merkmale des Anspruchs 3 aufweist.The invention achieves the stated object with a method which has the features of claim 1 and a device which has the features of claim 3.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass dank des erfindungsgemässen Verfahrens Faserbänder mit parallelisierter Faserlage vollautomatisch hergestellt werden können, welche in ihrer Zusammensetzung (Anteile an Fasern verschiedener Länge) weitgehend dem repräsentativen Fasergut der Grundgesamtheit entsprechen.The advantages achieved by the invention are essentially to be seen in the fact that, thanks to the method according to the invention, slivers with parallelized fiber layers can be produced fully automatically, the composition (proportions of fibers of different lengths) largely corresponding to the representative fiber material of the population.

Insbesondere gestattet das erfindungsgemässe Verfahren die Automatisierung der folgenden Funktionen:

  • Kontinuierliche Verstreckung und Doublierung durch automatische Richtungsänderung;
  • Beschickung;
  • Vliesauftrennung;
  • Einzug in das Streckwerk; und
  • Bandauslauf.
In particular, the method according to the invention allows the automation of the following functions:
  • Continuous stretching and doubling through automatic change of direction;
  • Feed;
  • Fleece separation;
  • Moving into the drafting system; and
  • Tape outlet.

Ein Ausführungsbeispiel der Erfindung, welches zugleich das Funktionsprinzip erläutert, ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention, which also explains the principle of operation, is shown in the drawing and will be described in more detail below.

Fig. 1 stellt einen schematischen Querschnitt durch eine Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens dar.1 shows a schematic cross section through a device for carrying out the method according to the invention.

In der Figur ist eine bevorzugte Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens dargestellt, welche in ihrem grundsätzlichen Aufbau aus einer ersten und zweiten, in beiden Drehrichtungen A und B wahlweise (mit nicht dargestellten Antriebsmitteln) antreibbare, zylindrische Garniturtrommel 3,8 mit je einer am Zylindermantel angebrachten Garnitur 9, bzw. 10, einer Zuführvorrichtung 1,2, welche die Beschickung der ersten Garniturtrommel 3 mit dem sich in Wirrlage befindlichen, vorportionierten Fasermaterial gestattet, einem zwischen der ersten und zweiten Garniturtrommel 3,8 angebrachten Streckwerk 7, einem ersten Transporttrum 11, welches die beidseitige Beförderung des Faservlieses zwischen der ersten Garniturtrommel 3 und dem Streckwerk 7 gestattet, einem zweiten Transporttrum 12, welches die beidseitige Beförderung des Faservlieses zwischen der zweiten Garniturtrommel 8 und dem Streckwerk 7 gestattet, einer zwischen den beiden Garniturtrommeln 3,8 oszillierbar angeordneten Trennvorrichtung 4 und einer (nicht dargestellten) Steuerungsvorrichtung für das Zusammenwirken der einzelnen Vorrichtungselemente besteht.In the figure, a preferred device for performing the method according to the invention is shown, which in its basic structure of a first and second, in both directions of rotation A and B optionally (with drive means not shown), cylindrical clothing drum 3.8 each with one on the cylinder jacket attached clothing 9 or 10, a feed device 1, 2, which allows the first clothing drum 3 to be loaded with the pre-portioned fiber material which is in a tangled position, a drafting system 7, which is attached between the first and second clothing drum 3, 8, a first transport strand 11 , which is the double-sided transport of the nonwoven fabric between the first clothing drum 3 and the drafting system 7, a second transport strand 12, which allows the non-woven material to be conveyed on both sides between the second clothing drum 8 and the drafting system 7, a separating device 4 which is arranged in an oscillating manner between the two clothing drums 3, 8 and a control device (not shown) for the There is interaction between the individual device elements.

Im folgenden werden die einzelnen Schritte des erfindungsgemässen Verfahrens anhand dieser bevorzugten Vorrichtung erläutert.The individual steps of the method according to the invention are explained below using this preferred device.

Schritt A (Beschickungsvorgang):Step A (loading process):

Das sich in Wirrlage befindliche, vorportionierte Fasermaterial z.B. Baumwolle in Flockenform, gelangt über ein Speisewalzenpaar 1 und einer damit zusammenwirkenden Auflösewalze 2 auf die erste Garniturtrommel 3. Durch Vorverzug zwischen dem Speisewalzenpaar 1 und der mit einer Garnitur versehenen Auflösewalze 2 entsteht hier sowohl eine Öffnung, als auch eine Vorparallelisierung des Fasermateriales.
Das so vororientierte Fasermaterial lagert sich in Vliesform in der Garnitur 9 am Zylindermantel der ersten Garniturtrommel 3 an. Bei diesem Vorgang dreht sich die erste Garniturtrommel 3 in Drehrichtung A bis der Beschickungsvorgang abgeschlossen ist. Danach wird die Vorrichtung für den nächsten Vorgang gestoppt.
Der Antrieb des Speisewalzenpaars 1 und der damit zusammenwirkenden Auflösewalze 2 erfolgt vorzugsweise motorisch und elektronisch gesteuert, kann jedoch grundsätzlich auch manuell erfolgen.The pre-portioned fiber material in the tangled state, for example cotton in flake form, reaches the first clothing drum 3 via a pair of feed rollers 1 and a dissolving roller 2 interacting therewith. as well as a pre-parallelization of the fiber material.
The fiber material thus pre-oriented is deposited in the form of a fleece in the clothing 9 on the cylinder jacket of the first clothing drum 3. In this process, the first clothing drum 3 rotates in the direction of rotation A until the loading process is completed. The device is then stopped for the next process.
The feed roller pair 1 and the opening roller 2 interacting therewith are preferably driven by a motor and electronically controlled, but can in principle also be done manually.

Schritt B (Auftrennen des Faservlieses)Step B (separation of the nonwoven fabric)

Das nun an der, auf der Trommeloberfläche befindlichen, Garnitur 9 angelagerte, in sich geschlossene Faservlies muss nun für den Einzug in das Streckwerk 7 längs einer Mantelerzeugenden der ersten Garniturtrommel 3 geradlinig aufgetrennt werden. Dazu durchsticht ein zwischen den beiden Garniturtrommeln 3,8 oszillierbar angeordneter Trennkamm 4 das Faservlies und trennt dieses durch eine von der Trennkurve 5 vorgegebene Bewegung auf. Die Nadeln 18 des Trennkamms 4 durchstechen das Faservlies und heben es von der Garniturtrommel 3 ab. Dabei wird das Vlies zwischen der Rückhaltestelle 6 und den Nadeln 18 unterbrochen. Die Trennkurve 5 und das Hebelwerk des Trennkamms 4, das in der bevorzugten Ausführungsform ein Parallelogramm-Gelenk ist, schwenken nun den Trennkamm 4 in solcher Weise, dass das Kopfende des Faservlieses 16,17 aus den Nadeln 18 gleitet.
Während des Trennvorganges wird das Schleppende des Vlieses durch einen Niederhalter 6 an die erste Garniturtrommel 3 gepresst.The self-contained fiber fleece, now attached to the clothing 9 located on the drum surface, must now be separated in a straight line along the length of a jacket of the first clothing drum 3 to be drawn into the drafting system 7. For this purpose, a separating comb 4, which is arranged in an oscillating manner between the two clothing drums 3, 8 pierces the nonwoven fabric and separates it by a movement predetermined by the separating curve 5. The needles 18 of the separation comb 4 pierce the nonwoven fabric and lift it off the clothing drum 3. The fleece between the retention point 6 and the needles 18 is interrupted. The separation curve 5 and the lever mechanism of the separation comb 4, which in the preferred embodiment is a parallelogram joint, now pivot the separation comb 4 in such a way that the head end of the nonwoven fabric 16, 17 slides out of the needles 18.
During the separation process, the trailing end of the fleece is pressed against the first clothing drum 3 by a hold-down device 6.

Schritt C und D (Einzug des Faservlieses in das Streckwerk)Step C and D (pulling the nonwoven into the drafting system)

Das nun durch den Trennvorgang vom Umfang der ersten Garniturtrommel 3 abstehende Kopfende des Vlieses wird durch Trommeldrehung in Drehrichtung A um den Drehwinkelbetrag w (der genaue Betrag dieses Winkels hängt von den geometrischen Verhältnissen der jeweiligen Vorrichtung ab und kann auf einfache Weise empirisch bestimmt werden) in die Streckwerkeinlauf-Position 13 gebracht.The head end of the fleece, which now protrudes from the circumference of the first clothing drum 3 by the separation process, is turned by rotating the drum in the direction of rotation A by the amount of the angle of rotation w (the exact amount of this angle depends on the geometric relationships of the respective device and can be determined empirically in a simple manner) brought the drafting system inlet position 13.

Nun wird die Drehrichtung der ersten Garniturtrommel 3 von A nach B geändert, wobei die Häkchen der Garnitur 9 in Abnahmestellung kommen und das Kopfende des sich vom Trommelumfang ablösenden Vlieses vom Transporttrum 11 mitgenommen und in das Streckwerk eingeführt wird.
Das Faservlies durchläuft nun das symmetrische 4-Riemchenstreckwerk 7, wobei zwischen den Klemmpunkten K1 und K2 ein positiver Verzug erfolgt. Die Verzugsgrössen, also die Differenzen der Umfangsgeschwindigkeiten zwischen den Riemchen 14 des rechten Vorrichtungsteils I und den Riemchen 15 des linken Vorrichtungsteils II sind frei wählbar und betragen vorzugsweise das 2-fache pro Hin-, bzw. Herlauf.Now the direction of rotation of the first clothing drum 3 is changed from A to B, the ticks of the clothing 9 coming into the removal position and the head end of the fleece detaching from the drum circumference being carried along by the transport strand 11 and being introduced into the drafting system.
The nonwoven fabric now runs through the symmetrical 4-apron drafting system 7, with a positive delay between the clamping points K1 and K2. The amounts of distortion, that is to say the differences in the peripheral speeds between the straps 14 of the right-hand device part I and the straps 15 of the left-hand device part II, can be freely selected and are preferably twice as much per run or run.

Schritt E (Doublierung des Faservlieses)Step E (doubling of the nonwoven fabric)

Das gemäss Schritt C abgelöste Vlies, dessen Länge durch den Trommelumfang der ersten Garniturtrommel 3 bestimmt ist, wird im Streckwerk 7, um den Faktor x (Verstreckungsfaktor) verlängert (z.B. verdoppelt). Das so verlängerte Vlies wird nun je nach Verlängerungsgrad mehrfach auf die zweite, in Drehrichtung B rotierende Garniturtrommel 8 aufgewunden, mit anderen Worten doubliert. Die Garniturhäkchen der Garnitur 10 stehen dabei in Aufnahmestellung.The fleece detached according to step C, the length of which is determined by the drum circumference of the first clothing drum 3, is extended (e.g. doubled) by the factor x (stretching factor) in the drafting unit 7. Depending on the degree of elongation, the nonwoven thus elongated is wound several times onto the second clothing drum 8 rotating in the direction of rotation B, in other words doubled. The hooks of the set 10 are in the receiving position.

Schritte F-H (Wiederholung des Vorganges jedoch spiegelverkehrt)Steps F-H (repetition of the process but reversed)

Nachdem nun die gesamte sich in der Vorrichtung befindliche Fasermenge auf die zweite Garniturtrommel 8 aufgelaufen ist, wird diese stillgesetzt, das Vlies analog zu Schritt B und C aufgetrennt und abgewickelt und erneut mit dem neuen Kopfende analog Schritt E in das Streckwerk 7 eingezogen und verstreckt. Der Vorgang läuft somit in völlig analoger Weise von der Maschinenseite II nach der Maschinenseite I ab. Das Fasermaterial wird nun sovielen Verstreck-Doublier-Verstreckzyklen unterworfen bis ein für die bestimmungsgemässe Verwendung ausreichender Parallelisationsgrad erreicht ist.Now that the entire amount of fibers in the device has run onto the second clothing drum 8, the latter is stopped, the fleece is separated and unwound analogously to steps B and C and again drawn and drawn into the drafting unit 7 with the new head end analogously to step E. The process thus runs in a completely analogous manner from machine side II to machine side I. The fiber material is then subjected to as many stretching-doubling-stretching cycles until a degree of parallelization that is sufficient for the intended use is reached.

Claims (5)

  1. A method for making fiber slivers with parallelized fibers from sets of tangled fibers, characterized by the following sequential steps:
    (A) winding a predetermined quantity of tangled fiber material onto a fist carding drum (3);
    (B) detaching the preoriented fiber web annularly wound on the first carding drum (3) at a selected site;
    (C) winding off the detached fiber web from the first carding drum (3) by the detached free end of the fiber web;
    (D) stretching the fiber web by the factor "x";
    (E) winding the stretched fiber web onto a second carding drum (8);
    (F) detaching the doubled fiber web wound on the second carding drum (8) at a selected site;
    (G) winding off the detached fiber web from the second carding drum (8) by the detached free end of the fiber web;
    (H) stretching the fiber web by the factor "x";
    (I) winding the stretched fiber web onto the first carding drum (3);
    (J) repeating the steps (B) through (I); and
    (K) terminating the iteration cycle after step (G).
  2. A method according to claim 1, characterized in that during the detaching procedure of step (B) the trailing end of the fiber web is pressed against the first carding drum (3).
  3. Device for performing the method according to claim 1 or 2, characterized by first and second cylindrical carding drums (3, 8) selectively driveable in both rotational directions (A,B) each having carding (9,10) mounted on the cylinder surface, feed means (1,2) for feeding to the first carding drum (3) a pre-measured amount of tangled fiber material, a stretching device (7) mounted between the first and second carding drums (3,8), a first conveyor belt means (11) for bidirectionally moving the fiber web between said first carding drum (3) and said stretching device (7), a second conveyor belt means (12) for bidirectionally moving the fiber web between the second carding drum (8) and the stretching device (7), a separation device (4) mounted for oscillatory movement between said two carding drums (3,8) and control means for the cooperation of the single elements of the device.
  4. Device according to claim 3, characterized in that the separation device (4), preferably in the form of a separation comb, is displaceably movable along a path defined by a separation cam (5) for detaching at a specific site the fiber web wound onto the carding drums (3,8) and unwinding the unravelled fiber web from the carding drums (3,8) by means of the detached free end of the fiber web along a generatrix of the carding drums (3,8).
  5. Device according to claim 3 or 4, characterized in that it further comprises, additionally to the separation device (4), a depressing device (6) to hold the trailing end of the fiber web against said carding drum (3, respectively 8) during the separation of said web from said drum.
EP90105070A 1989-04-18 1990-03-17 Method and device for the production of fibre ribbons with parallel fibre position out of tangled fibre collectives Expired - Lifetime EP0393360B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1468/89A CH681092A5 (en) 1989-04-18 1989-04-18
CH1468/89 1989-04-18

Publications (2)

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EP0393360A1 EP0393360A1 (en) 1990-10-24
EP0393360B1 true EP0393360B1 (en) 1993-05-19

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EP90105070A Expired - Lifetime EP0393360B1 (en) 1989-04-18 1990-03-17 Method and device for the production of fibre ribbons with parallel fibre position out of tangled fibre collectives

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US (1) US4980951A (en)
EP (1) EP0393360B1 (en)
CH (1) CH681092A5 (en)
DE (1) DE59001473D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH689127A5 (en) * 1994-02-10 1998-10-15 Zellweger Uster Ag Method for measuring the tearing strength of fibers.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185718C (en) *
CA672046A (en) * 1963-10-08 W. Robinson Brian Creeling apparatus
DE2110599B2 (en) * 1971-03-05 1978-04-27 Schuller, Werner Hugo Wilhelm, 8022 Gruenwald Process for the production of a glass fiber fleece by the wet fleece process
DE3532021A1 (en) * 1985-09-07 1987-03-19 Spinnbau Gmbh METHOD AND CRAFT FOR FABRIC PRODUCTION FROM FIBER MATERIAL
DE3708211C2 (en) * 1987-03-13 1998-05-07 Truetzschler Gmbh & Co Kg Device and method for improving the carding process of a card or card

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EP0393360A1 (en) 1990-10-24
CH681092A5 (en) 1993-01-15
DE59001473D1 (en) 1993-06-24
US4980951A (en) 1991-01-01

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