EP3771772A1 - Device and method for forming a fibre mat of staple fibres or flakes - Google Patents

Device and method for forming a fibre mat of staple fibres or flakes Download PDF

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Publication number
EP3771772A1
EP3771772A1 EP20188086.1A EP20188086A EP3771772A1 EP 3771772 A1 EP3771772 A1 EP 3771772A1 EP 20188086 A EP20188086 A EP 20188086A EP 3771772 A1 EP3771772 A1 EP 3771772A1
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EP
European Patent Office
Prior art keywords
belts
sieve
belt
flakes
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP20188086.1A
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German (de)
French (fr)
Inventor
Hubert Hergeth
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Individual
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Individual
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • 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
    • D04H1/02—Cotton wool; Wadding
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
    • D—TEXTILES; PAPER
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay

Definitions

  • the object of the invention is to create an easily adjustable storage system that avoids the shingling effect.
  • the invention provides a device according to claim 1 and a method according to claim 6.
  • the invention is initially based on Fig. 1 described.
  • An opening or chopping roller 1) delivers fibers / flakes, which are chopped off at a knife 2), into a shaft which is formed on two sides by sieve belts 3).
  • a fill level monitor 9) prevents overfilling of the shaft and can influence the fill quantity.
  • the falling fibers are compressed by the rotating sieve belts 3).
  • Suctions 4) are provided so that the fibers do not slip through the sieve belts and dust escapes.
  • the distance between the sieve belts can be adjusted at the outlet 10).
  • the angle a) that the sieve surfaces of the sieve belts occupy on the suction side to the fiber transport direction can be between 0 ° and 30 °.
  • the sieve belts form two sides of a chute that is parallel or tapering in the direction of material flow.
  • a suction 4) is assigned to each sieve belt 3) in such a way that the suction 4) extends along at least a section of the sieve belt 3) running vertically or at the angle mentioned in the area of the shaft.
  • the suction 4) is provided on the side of the sieve belt 3) facing away from the fiber flow and thus generates a suction air flow through the sieve belt 3), which sucks the fibers onto the sieve belt 3) and sucks dust and the like through the sieve belt 3).
  • the two sides of the discharge chute not formed by sieve belts are formed by wedge-shaped walls, preferably made of transparent plastic. This creates an angle ⁇ ).
  • the belts can be provided with an automatic internal and external cleaning system.
  • the belts are driven by gear motors, preferably on an upper roller 5).
  • the belt speed of the main belts 3) is a maximum of 20% slower than the speed of the discharge belt 8). In order to additionally compact the mat, it can also be up to 100% faster.
  • the deflection roller 7) or 11) around which the formed fiber mat is deflected and carried away by the discharge conveyor 8) should have a greater distance from the discharge conveyor than the other of the two.
  • the Figure 2 shows a corresponding embodiment in which the deflection roller 7), around which the formed fiber mat is deflected and carried away by the discharge conveyor belt 8), has a greater distance from the discharge conveyor belt than the deflection roller 11). Otherwise, the embodiment is according to Figure 2 identical to that according to Figure 1 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Zur Bildung eines Vlieses aus Stapelfasern werden die Fasern zwischen zwei Siebbänder (3) geworfen. Die Verdichtung erfolgt zwischen den Siebbändern (3). Funktionswinkel sind einstellbar.To form a fleece from staple fibers, the fibers are thrown between two sieve belts (3). The compression takes place between the main belts (3). Function angles are adjustable.

Description

In der Textilindustrie gibt es neben dem Herstellen eines Vlieses mittels eines Doffers seit Jahrzehnten die aerodynamische Vliesherstellung. Hierbei werden typischerweise die Fasern von einer letzten Trommel abgesaugt und auf eine Siebtrommel oder ein Siebband angesaugt, z.B. US 3,906,588 . Bei hohen Flächengewichten ist die einseitige Ansaugung an ein Sieb oder an eine Trommel nicht ausreichend. Es werden deshalb zwei Siebtrommeln wie in AT 207674 oder ein Siebband und eine Siebtrommel verwendet. Bei diesen Konstruktionen ist es schwierig, das Maß, auf das die gebildete Vliesmatte zusammengepresst wird, zu variieren. Bei einer Kombination von Siebband und Saugtrommel sind die Ansaugspunkte versetzt und die Fasern werden schräg abgelegt. Es entsteht der unerwünschte Schindeleffekt.In the textile industry, in addition to the production of a nonwoven using a doffer, there has been aerodynamic nonwoven production for decades. Here, the fibers are typically sucked off a last drum and sucked onto a sieve drum or a sieve belt, e.g. U.S. 3,906,588 . With high weights per unit area, suction on one side of a sieve or drum is not sufficient. Therefore two sieve drums are used as in AT 207674 or a sieve belt and a sieve drum are used. With these constructions it is difficult to vary the amount to which the nonwoven mat formed is compressed. In the case of a combination of sieve belt and suction drum, the suction points are offset and the fibers are placed at an angle. The undesirable shingle effect is created.

Aufgabe der Erfindung ist es, ein leicht zu verstellendes Ablagesystem zu schaffen, das den Schindeleffekt vermeidet.The object of the invention is to create an easily adjustable storage system that avoids the shingling effect.

Die Erfindung sieht dazu eine Vorrichtung gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 6 vor.To this end, the invention provides a device according to claim 1 and a method according to claim 6.

Die Erfindung wird zunächst anhand von Fig. 1 beschrieben.The invention is initially based on Fig. 1 described.

Eine Auflöse- oder Abschlagwalze 1) liefert Fasern/Flocken, die an einem Messer 2) abgeschlagen werden, in einen Schacht, der an zwei Seiten durch Siebbänder 3) gebildet wird. Eine Füllhöhenüberwachung 9) verhindert ein Überfüllen des Schachtes und kann die Einfüllmenge beeinflussen.An opening or chopping roller 1) delivers fibers / flakes, which are chopped off at a knife 2), into a shaft which is formed on two sides by sieve belts 3). A fill level monitor 9) prevents overfilling of the shaft and can influence the fill quantity.

Die herabfallenden Fasern werden durch die umlaufenden Siebbänder 3) verdichtet. Ansaugungen 4) sind vorgesehen, damit die Fasern an den Siebbändern nicht durchrutschen und Staub austritt. Die Siebbänder können in ihrem Abstand am Auslauf 10) eingestellt werden. Der Winkel a), den die Siebflächen der Siebbänder an der Saugseite zur Fasertransportrichtung einnehmen, kann zwischen 0° und 30° betragen. Die Siebbänder bilden zwei Seiten eines parallelen oder in Materiallaufrichtung sich verjüngenden Schachtes. Jedem Siebband 3) ist eine Ansaugung 4) so zugeordnet, dass die Ansaugung 4) sich entlang zumindest einer Teilstrecke des vertikal oder unter dem genannten Winkel laufenden Siebbands 3) im Bereich des Schachtes erstreckt. Die Ansaugung 4) ist dabei auf der dem Faserstrom abgewandten Seite des Siebbands 3) vorgesehen und erzeugt somit einen Saugluftstrom durch das Siebband 3) hindurch, der die Fasern an das Siebband 3) ansaugt und Staub und dergleichen durch das Siebband 3) hindurch absaugt.The falling fibers are compressed by the rotating sieve belts 3). Suctions 4) are provided so that the fibers do not slip through the sieve belts and dust escapes. The distance between the sieve belts can be adjusted at the outlet 10). The angle a) that the sieve surfaces of the sieve belts occupy on the suction side to the fiber transport direction can be between 0 ° and 30 °. The sieve belts form two sides of a chute that is parallel or tapering in the direction of material flow. A suction 4) is assigned to each sieve belt 3) in such a way that the suction 4) extends along at least a section of the sieve belt 3) running vertically or at the angle mentioned in the area of the shaft. The suction 4) is provided on the side of the sieve belt 3) facing away from the fiber flow and thus generates a suction air flow through the sieve belt 3), which sucks the fibers onto the sieve belt 3) and sucks dust and the like through the sieve belt 3).

Es ist vorteilhaft, die Umlenkwalzen 6) in einem weiteren Abstand zum Abförderband 8) als die Umlenkwalzen 7) und 11) zu platzieren, um ein Stauchen der abzuführenden Fasermatte zu verhindern.It is advantageous to place the deflecting rollers 6) at a greater distance from the discharge belt 8) than the deflecting rollers 7) and 11) in order to prevent the fiber mat to be removed from being compressed.

Die beiden nicht durch Siebbänder gebildeten Seiten des Abführschachtes werden durch keilförmige Wände, vorzugsweise aus durchsichtigem Kunststoff, gebildet. Dadurch entsteht ein Winkel β).The two sides of the discharge chute not formed by sieve belts are formed by wedge-shaped walls, preferably made of transparent plastic. This creates an angle β).

Die Bänder können mit einer automatischen Innen- und Außenreinigung versehen sein.The belts can be provided with an automatic internal and external cleaning system.

Die Bänder werden durch Getriebemotoren vorzugsweise an einer oberen Walze 5) angetrieben. Die Bandgeschwindigkeit der Siebbänder 3) ist maximal 20 % langsamer als die Geschwindigkeit des Abförderbandes 8). Um zusätzlich die Matte zu verdichten, kann sie auch bis zu 100 % schneller sein.The belts are driven by gear motors, preferably on an upper roller 5). The belt speed of the main belts 3) is a maximum of 20% slower than the speed of the discharge belt 8). In order to additionally compact the mat, it can also be up to 100% faster.

Die Umlenkwalze 7) oder 11), um die die gebildete Fasermatte umgelenkt und von dem Abförderband 8) abgeführt wird, sollte einen größeren Abstand vom Abförderband haben als die andere der beiden. Die Figur 2 zeigt eine entsprechende Ausführungsform, in der die Umlenkwalze 7), um die die gebildete Fasermatte umgelenkt und von dem Abförderband 8) abgeführt wird, einen größeren Abstand vom Abförderband hat als die Umlenkwalze 11). Im übrigen ist die Ausführungsform gemäß Figur 2 identisch mit derjenigen gemäß Figur 1.The deflection roller 7) or 11) around which the formed fiber mat is deflected and carried away by the discharge conveyor 8) should have a greater distance from the discharge conveyor than the other of the two. The Figure 2 shows a corresponding embodiment in which the deflection roller 7), around which the formed fiber mat is deflected and carried away by the discharge conveyor belt 8), has a greater distance from the discharge conveyor belt than the deflection roller 11). Otherwise, the embodiment is according to Figure 2 identical to that according to Figure 1 .

Claims (10)

Vorrichtung zur Bildung einer Fasermatte aus Stapelfasern oder Flocken, bei der das Material von einer mit Garnitur oder Stiften versehenen Walze (1) abgelöst wird und in einen Schacht gelangt,
dadurch gekennzeichnet, dass
zwei gegenüberliegende Seiten des Schachtes aus besaugten Siebbändern (3) bestehen, die in Materiallaufrichtung bewegbar sind.Device for forming a fiber mat from staple fibers or flakes, in which the material is detached from a roller (1) provided with clothing or pins and enters a shaft,
characterized in that
two opposite sides of the shaft consist of suction belts (3) which can be moved in the direction of material flow. Vorrichtung nach Anspruch 1, bei welcher die Siebbänder (3) sich in Materiallaufrichtung gesehen in einem Winkel von 0° - 25° zur Transportrichtung annähern.Device according to Claim 1, in which the sieve belts (3) approach one another at an angle of 0 ° -25 ° to the direction of transport, viewed in the direction of material flow. Vorrichtung nach Anspruch 1 oder 2, bei welcher der Abstand der beiden Siebbänder (3) voneinander einstellbar ist.Device according to Claim 1 or 2, in which the distance between the two screen belts (3) from one another is adjustable. Vorrichtung nach einem der Ansprüche 1 bis 3, bei welcher der Abstand zweier einem Abförderband (8) am nächsten gelegenen Umlenkwalzen (7, 11) zum Abförderband (8) unterschiedlich ist.Device according to one of Claims 1 to 3, in which the distance between two deflecting rollers (7, 11) located closest to a discharge conveyor belt (8) and the discharge conveyor belt (8) is different. Vorrichtung nach einem der Ansprüche 1 bis 4, bei welcher die Geschwindigkeit der Siebbänder (3) zwischen 80 % und 200 % der Geschwindigkeit des Abförderbandes (8) beträgt.Apparatus according to one of Claims 1 to 4, in which the speed of the sieve belts (3) is between 80% and 200% of the speed of the discharge belt (8). Verfahren zur Bildung einer Fasermatte aus Stapelfasern oder Flocken, bei dem das Material von einer mit Garnitur oder Stiften versehenen Walze (1) abgelöst wird und in einen Schacht gelangt,
dadurch gekennzeichnet, dass
zwei gegenüberliegende Seiten des Schachtes aus besaugten Siebbändern (3) bestehen, die in Materiallaufrichtung bewegt werden.Process for the formation of a fiber mat from staple fibers or flakes, in which the material is detached from a roller (1) provided with clothing or pins and enters a shaft,
characterized in that
two opposite sides of the shaft consist of suction belts (3) that are moved in the direction of material flow. Verfahren nach Anspruch 6, bei welchem die Siebbänder (3) sich in Materiallaufrichtung gesehen in einem Winkel von 0° - 25° zur Transportrichtung annähern.Method according to Claim 6, in which the sieve belts (3) approach one another at an angle of 0 ° -25 ° to the direction of transport, viewed in the direction of material flow. Verfahren nach Anspruch 6 oder 7, bei welchem der Abstand der beiden Siebbänder (3) voneinander einstellbar ist.Method according to Claim 6 or 7, in which the distance between the two screen belts (3) from one another is adjustable. Verfahren nach einem der Ansprüche 6 bis 8, bei welchem der Abstand zweier einem Abförderband (8) am nächsten gelegenen Umlenkwalzen (7, 11) zum Abförderband unterschiedlich ist.Method according to one of Claims 6 to 8, in which the distance between two deflecting rollers (7, 11) located closest to a discharge conveyor belt (8) is different from the discharge conveyor belt. Verfahren nach einem der Ansprüche 6 bis 9, bei welchem die Geschwindigkeit der Siebbänder (3) zwischen 80 % und 200 % der Geschwindigkeit des Abförderbandes (8) beträgt.Method according to one of Claims 6 to 9, in which the speed of the sieve belts (3) is between 80% and 200% of the speed of the discharge belt (8).
EP20188086.1A 2019-07-30 2020-07-28 Device and method for forming a fibre mat of staple fibres or flakes Withdrawn EP3771772A1 (en)

Applications Claiming Priority (1)

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DE102019005316.8A DE102019005316A1 (en) 2019-07-30 2019-07-30 V mat

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EP3771772A1 true EP3771772A1 (en) 2021-02-03

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EP20188086.1A Withdrawn EP3771772A1 (en) 2019-07-30 2020-07-28 Device and method for forming a fibre mat of staple fibres or flakes

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CN (1) CN112301538A (en)
DE (1) DE102019005316A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT207674B (en) 1959-01-14 1960-02-25 Otto Dr Angleitner Textile nonwoven and process and device for its manufacture
US3906588A (en) 1971-04-20 1975-09-23 Du Pont Air-laydown apparatus for assembling fibers into webs
DE4340173A1 (en) * 1993-11-25 1995-06-01 Hergeth Hubert A Detecting and removing alien bodies
EP2695976A1 (en) * 2012-08-06 2014-02-12 Oskar Dilo Maschinenfabrik KG Supply device for delivering opened fibres or flocked fibres to a transport device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2009149A1 (en) * 2007-06-25 2008-12-31 Oskar Dilo Maschinenfabrik KG Feed device for flock and method for feeding fibres or flock
AT505788B1 (en) * 2007-08-22 2013-06-15 Hergeth Hubert BAY FOR THE FORMATION OF A FIBER MAT

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT207674B (en) 1959-01-14 1960-02-25 Otto Dr Angleitner Textile nonwoven and process and device for its manufacture
US3906588A (en) 1971-04-20 1975-09-23 Du Pont Air-laydown apparatus for assembling fibers into webs
DE4340173A1 (en) * 1993-11-25 1995-06-01 Hergeth Hubert A Detecting and removing alien bodies
EP2695976A1 (en) * 2012-08-06 2014-02-12 Oskar Dilo Maschinenfabrik KG Supply device for delivering opened fibres or flocked fibres to a transport device

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Publication number Publication date
CN112301538A (en) 2021-02-02
DE102019005316A1 (en) 2021-02-04

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