EP0255602B1 - Installation for feeding a fibre-processing machine - Google Patents

Installation for feeding a fibre-processing machine Download PDF

Info

Publication number
EP0255602B1
EP0255602B1 EP87109220A EP87109220A EP0255602B1 EP 0255602 B1 EP0255602 B1 EP 0255602B1 EP 87109220 A EP87109220 A EP 87109220A EP 87109220 A EP87109220 A EP 87109220A EP 0255602 B1 EP0255602 B1 EP 0255602B1
Authority
EP
European Patent Office
Prior art keywords
vanes
arrangement according
needles
fibre
height
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
EP87109220A
Other languages
German (de)
French (fr)
Other versions
EP0255602A1 (en
Inventor
Paul Stäheli
Fritz Knabenhans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0255602A1 publication Critical patent/EP0255602A1/en
Application granted granted Critical
Publication of EP0255602B1 publication Critical patent/EP0255602B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the present invention relates to an arrangement for supplying a fiber processing machine according to the preamble of claim 1.
  • the arrangement has the features listed in the characterizing part of claim 1.
  • the invention thus provides the additional advantages that changes in shape of existing systems, in particular additional space requirements, or bulky units to be attached or are not necessary.
  • the higher homogeneity of the original is obtained by reducing the kinetic energy of the incoming flakes and by deflecting them.
  • the question may therefore arise whether the flock speed is not further increased by the blades additionally provided according to the invention and thus the homogeneity of the original is deteriorated.
  • the filling shaft is closed relatively well at the location of the opening roller and the two pinch rollers, so that as a result of the blades there is only a slight increase in the outside air entering the shaft from the outside, and therefore assuming a constant rotational speed of the roller , there is no cause for a much higher speed of the same.
  • Fiber material transported by a conveyor channel (not shown) is collected in a discharge head 11. From the head 11 it enters a feed shaft 12. At its lower end there are two feed rollers 13 forming a clamping line with one another. A perforated wall separates the shaft 12 from a calming space 14 which leads to an exhaust air housing 15 which has an air outlet opening 16.
  • An opening roller 17 is provided immediately after the feed rollers 13. Distributed over the outer surface 18 of the needles 19 are attached to it.
  • a deflection element 20 and an impact element 21 are provided.
  • the deflection element 20 is pivotable about an axis 22 and adjustable in different angular positions.
  • the impact element 21 in turn can be adjusted as desired between the positions shown in broken lines.
  • the fiber flakes flown into the separating head 11 are collected in the feed shaft 12. This takes place by means of an air flow flowing from the head 11 via the shaft 12 and through the space 14, which flows out again through the housing 15 and the opening 16.
  • the collected flake material 26 is fed by means of the feed rollers 13 to the opening roller 17, which rotates continuously in the direction of arrow 27 about its axis during operation.
  • the needles 19 tear fiber material in the form of cotton flakes with them and hurl it into the filling shaft 23, in which it falls down and is compressed into the template 24.
  • wings 25 are also provided in addition to the needles 19. These are shaped as elongated strips which are parallel to the generatrices of the cylinder of the roller 17 and extend outwards from the circumferential surface 18 thereof stretch. In the examples shown in the figures, they are bent backwards with respect to the direction of rotation of the roller 17 shown by the arrow 27.
  • the needles 19 form rows which run along surface lines of the cylindrical part of the roller 17.
  • Each of the strip-shaped wings 25 extends in its longitudinal direction in the direction parallel to the surface lines over the entire length of the roller 17. The height of the wings 25 above the outer surface 18 is smaller than that Height of the needles above the outer surface 18.
  • the course of the wings 25, since these lie parallel to the rows of needles, is also oblique with respect to the generatrices.
  • the wings 25 do not have to be exactly parallel to the surface lines. However, they are advantageously "essentially” parallel to these.
  • the vanes 25 bring about a better entrainment of the air, so that the provision of the vanes 25 increases the air throughput, which, however, always takes on very modest values, and, above all, increases the air pressure in the filling duct 23. This results in a heavier and more uniform template 24 than would be the case without wings.
  • the increased air pressure and the greater air throughput result in a more even distribution of the fiber material because it is moved more vigorously, and possibly with transverse movements, into the empty spaces that may initially be present between individual flakes.
  • the variation coefficient CVim was 3.6% for a card sliver produced without wing 25 on the opening roller 17 of the feed chute, while the corresponding value of that with wing 25 on the opening roller 17 card sliver produced was 2.96%.
  • the additional use of the action members 20, 21 may be advantageous.
  • the element 20 and the organ 21 serve primarily to reduce the kinetic energy of the flakes and to distribute them evenly.
  • the use of each of the action members 20, 21 alone or both together in combination with the present invention therefore results in an additional homogenization of the template 24.
  • the vanes 25 are bent back over their entire width with respect to the direction of rotation of the roller 17 shown by the arrow 27.
  • the purpose of bending is to prevent fibers from getting caught.
  • the use of such wings results in the further advantage that the swirling of the flakes becomes smaller in the feed chute 23, which also has a positive effect on the uniformity of the feed.
  • they have the shape of flat strips which can even be perpendicular to the lateral surface 18.
  • they are bent back only at their wing part which is remote from the lateral surface and extends in the longitudinal direction of the wing.
  • the wing 25 has a strip-shaped section 33 facing the jacket 18, which is flat. However, a strip-shaped wing part 29 facing away from the lateral surface 18 and one longitudinal side of which is delimited by a free edge 30 is bent. It has a bend in which, at the location of the free edge 30, the tangents 31 perpendicular to the latter on the wing part 29 coincide with the tangents which, at this location, bear against the cylindrical surface 32 described by the edge 30 during its rotation.

Landscapes

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

Description

Die vorliegende Erfindung bezieht sich auf eine Anordnung zum Beliefern einer Faserbearbeitungsmaschine gemäss dem Oberbegriff des Patentanspruchs 1.The present invention relates to an arrangement for supplying a fiber processing machine according to the preamble of claim 1.

Eine solche Anordnung ist durch die Europäische Patentanmeldung Nr. 0 175 851 bereits bekannt. Gemäss dieser wird durch das Vorsehen eines Umlenkelementes bzw. eines Prallorgans eine verbesserte Homogenität des im Füllschacht angesammelten Fasermaterials erhalten.Such an arrangement is already known from European Patent Application No. 0 175 851. According to this, an improved homogeneity of the fiber material accumulated in the filling shaft is obtained by the provision of a deflection element or a baffle.

Es wurde nun gefunden, dass bei einer Anordnung gemäss dem Oberbegriff des Patentanspruchs 1 mit einfachen Mitteln nochmals eine erhebliche Verbesserung des sich im Füllschacht befindlichen Fasermaterials, d.h. der sich im Füllschacht befindlichen Vorlage, erhalten werden kann. Die Verbesserung besteht in einer besseren Homogenität und grösseren Kompaktheit der Vorlage.It has now been found that with an arrangement according to the preamble of claim 1, simple means once again bring about a considerable improvement in the fiber material located in the filling shaft, i.e. the template located in the filling shaft can be obtained. The improvement consists in a better homogeneity and greater compactness of the template.

Erfindungsgemäss weist die Anordnung die im kennzeichnenden Teil des Anspruchs 1 aufgeführten Merkmale auf.According to the invention, the arrangement has the features listed in the characterizing part of claim 1.

Die Erfindung ergibt somit die zusätzlichen Vorteile, dass Formänderungen an bereits bestehenden Anlagen, insbesondere zusätzliche Platzbeanspruchungen, oder anzubringende oder sperrige Aggregate, nicht notwendig sind.The invention thus provides the additional advantages that changes in shape of existing systems, in particular additional space requirements, or bulky units to be attached or are not necessary.

Es ist zu beachten, dass bei der eingangs erwähnten Patentanmeldung die höhere Homogenität der Vorlage durch eine Reduktion der kinetischen Energie der einfliegenden Flocken und durch Ablenken derselben, erhalten wird. Es kann sich daher die Frage stellen, ob durch die gemäss der Erfindung zusätzlich vorgesehenen Flügel die Flockengeschwindigkeit nicht noch weiter erhöht und damit die Homogenität der Vorlage verschlechtert werde. In diesem Zusammenhang ist zu beachten, dass am Ort der Oeffnerwalze und der beiden Klemmwalzen der Füllschacht relativ gut abgeschlossen ist, sodass als Folge der Flügel nur eine geringe Zunahme der von aussen in den Schacht hinein gelangenden Aussenluft eintritt und somit, gleichbleibende Rotationsgeschwindigkeit der Walze vorausgesetzt, keine Ursache für eine wesentlich höhere Geschwindigkeit derselben vorhanden ist.It should be noted that in the patent application mentioned at the outset, the higher homogeneity of the original is obtained by reducing the kinetic energy of the incoming flakes and by deflecting them. The question may therefore arise whether the flock speed is not further increased by the blades additionally provided according to the invention and thus the homogeneity of the original is deteriorated. In this context, it should be noted that the filling shaft is closed relatively well at the location of the opening roller and the two pinch rollers, so that as a result of the blades there is only a slight increase in the outside air entering the shaft from the outside, and therefore assuming a constant rotational speed of the roller , there is no cause for a much higher speed of the same.

Hingegen ergibt sich eine merkliche Erhöhung des Luftdrucks am Eingang des Füllschachts und damit auf die sich in diesem befindliche Vorlage. Der erhöhte Luftdruck, bzw. der erhöhte Luftdurchsatz, bewirkt ein stärkeres Zusammendrücken der Vorlage. Das Zusammendrücken der Vorlage wird nämlich durch den auf sie wirkenden Druck und durch die sie durchquerende Luftmenge erzeugt. Man erhält eine grössere Verdichtung derselben, da, wie die Praxis zeigt, überraschend eine zusätzliche Homogenität der Vorlage dadurch eintritt, dass die Faserflocken gegenseitig in der Weise näher zusammen gedrängt werden, dass insbesondere Fasermaterial in zwischen den Flocken anfänglich vorhandene Hohlräume hineingeschoben wird, sodass die Hohlräume mit Fasern gefüllt und damit ausser durch Zusammendrücken auch auf diese Weise eliminiert werden.On the other hand, there is a noticeable increase in the air pressure at the inlet of the filling shaft and thus on the template in it. The increased air pressure or the increased air throughput causes the original to be compressed more. The compression of the original is namely generated by the pressure acting on it and by the amount of air passing through it. One obtains a greater compression of the same, since, as practice shows, surprisingly an additional homogeneity of the template occurs in that the fiber flakes are pressed closer together in such a way that fiber material in particular is pushed into the cavities initially present between the flakes, so that the Cavities are filled with fibers and can thus be eliminated in this way in addition to being compressed.

Im folgenden sei die Erfindung an Hand von Ausführungsbeispielen und der Figuren der Zeichnung näher erläutert. In der letzteren ist

  • Fig. 1 eine schematische Seitenansicht einer erfindungsgemässen Anordnung,
  • Fig. 2 eine vergrösserte Ansicht des die Oeffnerwalze und die Klemmwalze umfassenden Bereichs, und
  • Fig. 3 eine Darstellung einer speziellen Flügelausbildung.
The invention is explained in more detail below with reference to exemplary embodiments and the figures of the drawing. In the latter is
  • 1 is a schematic side view of an arrangement according to the invention,
  • Fig. 2 is an enlarged view of the area comprising the opening roller and the pinch roller, and
  • Fig. 3 shows a special wing design.

In den Figuren sind gleiche Teile mit den gleichen Bezugszeichen versehen.In the figures, the same parts are provided with the same reference symbols.

In einem Ausscheidekopf 11 wird von einem nicht gezeigten Förderkanal transportiertes Fasermaterial aufgefangen. Vom Kopf 11 gelangt es in einen Speiseschacht 12. An dessen untern Ende befinden sich zwei miteinander eine Klemmlinie bildende Speisewalzen 13. Eine perforierte Wand trennt den Schacht 12 von einem Beruhigungsraum 14, der zu einem Abluftgehäuse 15 führt, das eine Luftaustrittsöffnung 16 besitzt.Fiber material transported by a conveyor channel (not shown) is collected in a discharge head 11. From the head 11 it enters a feed shaft 12. At its lower end there are two feed rollers 13 forming a clamping line with one another. A perforated wall separates the shaft 12 from a calming space 14 which leads to an exhaust air housing 15 which has an air outlet opening 16.

Unmittelbar an die Speisewalzen 13 anschliessend ist eine Oeffnerwalze 17 vorgesehen. Ueber deren Mantelfläche 18 verteilt sind auf dieser nach aussen gerichtete Nadeln 19 angebracht. Ausserdem sind ein Umlenkelement 20 und ein Prallelement 21 vorgesehen. Das Umlenkelement 20 ist um eine Achse 22 schwenkbar und in verschiedenen Winkellagen einstellbar. Das Prallelement 21 wiederum ist zwischen den strichliert gezeichneten Positionen beliebig einstellbar. Von der Oeffnerwalze 17 wird das mittels der Nadeln 19 losgelöste Flockenmaterial in den Füll- oder Vorlageschacht 23 geschleudert. In diesem werden die Flocken zu einer Vorlage 24 gesammelt, und diese wird anschliessend durch nicht gezeigte, sich am untern Ende des Schachts 23 befindliche Mittel weiter befördert und gelangt schliesslich zu einem ebenfalls nicht gezeigten Einzugszylinder einer Karde.An opening roller 17 is provided immediately after the feed rollers 13. Distributed over the outer surface 18 of the needles 19 are attached to it. In addition, a deflection element 20 and an impact element 21 are provided. The deflection element 20 is pivotable about an axis 22 and adjustable in different angular positions. The impact element 21 in turn can be adjusted as desired between the positions shown in broken lines. From the opening roller 17, the flake material released by the needles 19 is thrown into the filling or feed chute 23. In this, the flakes are collected into a template 24, which is then conveyed further by means not shown, which are located at the lower end of the shaft 23, and finally arrives at a carding cylinder, also not shown, of a card.

Zusätzlich zu den Nadeln 19 befinden sich noch Flügel 25 auf dem zylindrischen Teil der Oeffnerwalze 17. Sie sind streifenförmig geformt und verlaufen parallel zu den Mantellinien der Mantelfläche 18 und damit senkrecht zur Zeichenebene.In addition to the needles 19, there are also wings 25 on the cylindrical part of the opening roller 17. They are strip-shaped and run parallel to the surface lines of the outer surface 18 and thus perpendicular to the plane of the drawing.

Im Betrieb der in den Fig. 1 und 2 gezeigten Anordnung werden die in den Ausscheidekopf 11 eingeflogenen Faserflocken im Speiseschacht 12 gesammelt. Dies erfolgt mittels einer vom Kopf 11 über den Schacht 12 und durch den Raum 14 fliessenden Luftströmung, welche durch das Gehäuse 15 und die Oeffnung 16 wieder austritt. Das gesammelte Flockenmaterial 26 wird mittels der Speisewalzen 13 der Oeffnerwalze 17 zugeführt, welche im Betrieb dauernd in Richtung des Pfeils 27 um ihre Achse rotiert. Die Nadeln 19 reissen Fasermaterial in der Form von Watteflocken mit sich und schleudern es in den Füllschacht 23 hinein, in welchem es nach unten fällt und zur Vorlage 24 verdichtet wird.In the operation of the arrangement shown in FIGS. 1 and 2, the fiber flakes flown into the separating head 11 are collected in the feed shaft 12. This takes place by means of an air flow flowing from the head 11 via the shaft 12 and through the space 14, which flows out again through the housing 15 and the opening 16. The collected flake material 26 is fed by means of the feed rollers 13 to the opening roller 17, which rotates continuously in the direction of arrow 27 about its axis during operation. The needles 19 tear fiber material in the form of cotton flakes with them and hurl it into the filling shaft 23, in which it falls down and is compressed into the template 24.

Erfindungsgemäss sind zusätzlich zu den Nadeln 19 noch Flügel 25 vorgesehen. Diese sind als langgestreckte Streifen geformt, welche zu den Mantellinien des Zylinders der Walze 17 parallel sind und sich von dessen Mantelfläche 18 nach aussen erstrecken. In den in den Figuren gezeigten Beispielen sind sie bezüglich der durch den Pfeil 27 gezeigten Rotationsrichtung der Walze 17 nach hinten umgebogen. Im in den Fig. 1 und 2 gezeigten Beispiel bilden die Nadeln 19 Reihen, welche längs Mantellinien des zylindrischen Teils der Walze 17 verlaufen. Dabei befinden sich zwischen je zwei benachbarten Nadelreihen je ein Flügel 25. Jeder der streifenförmigen Flügel 25 erstreckt sich in seiner Längsrichtung in zu den Mantellinien paralleler Richtung über die ganze Länge der Walze 17. Die Höhe der Flügel 25 über der Mantelfläche 18 ist kleiner als die Höhe der Nadeln über der Mantelfläche 18.According to the invention, wings 25 are also provided in addition to the needles 19. These are shaped as elongated strips which are parallel to the generatrices of the cylinder of the roller 17 and extend outwards from the circumferential surface 18 thereof stretch. In the examples shown in the figures, they are bent backwards with respect to the direction of rotation of the roller 17 shown by the arrow 27. In the example shown in FIGS. 1 and 2, the needles 19 form rows which run along surface lines of the cylindrical part of the roller 17. There is a wing 25 between each two adjacent rows of needles. Each of the strip-shaped wings 25 extends in its longitudinal direction in the direction parallel to the surface lines over the entire length of the roller 17. The height of the wings 25 above the outer surface 18 is smaller than that Height of the needles above the outer surface 18.

Bei Ausführungsformen von Oeffnerwalzen, bei denen die Nadelreihen schräg zu den Mantellinien verlaufen, ist der Verlauf der Flügel 25, da diese parallel zu den Nadelreihen liegen, ebenfalls schräg in Bezug auf die Mantellinien. Um die erfindungsgemässen Vorteile zu erhalten, müssen die Flügel 25 nicht genau parallel zu den Mantellinien liegen. Sie sind aber vorteilhafterweise "im wesentlichen" parallel zu diesen.In embodiments of opening rollers, in which the rows of needles run obliquely to the generatrices, the course of the wings 25, since these lie parallel to the rows of needles, is also oblique with respect to the generatrices. In order to obtain the advantages according to the invention, the wings 25 do not have to be exactly parallel to the surface lines. However, they are advantageously "essentially" parallel to these.

Wie bereits eingangs erwähnt, bewirken die Flügel 25 eine bessere Mitnahme der Luft, sodass das Vorsehen der Flügel 25 eine Erhöhung des Luftdurchsatzes, welcher jedoch immer sehr bescheidene Werte einnimmt, und vor allem einen erhöhten Luftdruck im Füllschacht 23 zur Folge hat. Dadurch resultiert eine schwerere und gleichmässigere Vorlage 24, als dies ohne Flügel der Fall wäre. Der erhöhte Luftdruck und der grössere Luftdurchsatz bewirken eine gleichmässigere Verteilung des Fasermaterials, weil dieses kräftiger, und gegebenenfalls unter Ausführen von Querbewegungen, in die leeren Räume, die zwischen einzelnen Flocken anfänglich vorhanden sein können, hineinbewegt wird. Da zwischen den Speisewalzen 13 das durchgeführte Fasermaterial zusammengepresst wird und seitlich dieses Walzenpaares zwischen dessen Walzen 13 und dem Element 20 bzw. der Endkante 28 des gekrümmten Teils des Schachts 23 nur ein minimaler Zwischenraum vorhanden ist, so bewirken, wie ebenfalls eingangs erwähnt, bei gleicher Rotationsgeschwindigkeit der Walze 17 die Flügel 25 keine merkliche Zunahme der Geschwindigkeit der wegfliegenden Flocken, sondern nur eine Erhöhung des naturgemäss sehr bescheidenen Luftdurchsatzes durch die Vorlage 24.As already mentioned at the beginning, the vanes 25 bring about a better entrainment of the air, so that the provision of the vanes 25 increases the air throughput, which, however, always takes on very modest values, and, above all, increases the air pressure in the filling duct 23. This results in a heavier and more uniform template 24 than would be the case without wings. The increased air pressure and the greater air throughput result in a more even distribution of the fiber material because it is moved more vigorously, and possibly with transverse movements, into the empty spaces that may initially be present between individual flakes. Since between the feed rollers 13 the fiber material is pressed together and to the side of this pair of rollers between the rollers 13 and the element 20 or the end edge 28 of the curved part of the shaft 23, there is only a minimal gap, so, as also mentioned at the outset, effect the same Rotation speed of the roller 17, the vanes 25 no noticeable increase in the speed of the flakes flying away, but only an increase in the naturally very modest air throughput through the template 24.

Versuche haben ergeben, dass mit der erfindungsgemässen Anordnung eine schöne, gleichmässige Vorlage erhalten wird, deren Vorlagegewicht im Vergleich zu einer durch eine Oeffnerwalze ohne Flügel gebildeten Vorlage von 610 g/m auf 730 g/m anstieg, also um 20% grösser war.Tests have shown that with the arrangement according to the invention a beautiful, uniform template is obtained, the template weight of which increased by 20% compared to a template formed by an opener roller without a wing from 610 g / m to 730 g / m.

Auch bezüglich der Gleichmässigkeit der erzeugten Vorlage 24 wurde eine eindeutige Verbesserung festgestellt: so war der Variationskoeffizient CVim bei einem, ohne Flügel 25 an der Oeffnerwalze 17 des Vorlageschachtes erzeugten Kardenbandes gleich 3,6 %, während der entsprechende Wert des mit Flügel 25 an der Oeffnerwalze 17 erzeugten Kardenbandes gleich 2,96 % war.A clear improvement was also found with regard to the uniformity of the template 24 produced: for example, the variation coefficient CVim was 3.6% for a card sliver produced without wing 25 on the opening roller 17 of the feed chute, while the corresponding value of that with wing 25 on the opening roller 17 card sliver produced was 2.96%.

Je nach den vorliegenden Umständen kann die zusätzliche Verwendung der Einwirkorgane 20, 21 von Vorteil sein. Das Element 20 und das Organ 21 dienen vor allem zur Reduzierung der kinetischen Energie der Flocken und zur gleichmässigen Verteilung derselben. Die Verwendung jedes der Einwirkorgane 20, 21 für sich allein oder beide zusammen in Kombination mit vorliegender Erfindung ergibt daher eine zusätzliche Homogenisierung der Vorlage 24.Depending on the circumstances, the additional use of the action members 20, 21 may be advantageous. The element 20 and the organ 21 serve primarily to reduce the kinetic energy of the flakes and to distribute them evenly. The use of each of the action members 20, 21 alone or both together in combination with the present invention therefore results in an additional homogenization of the template 24.

Im in den Figuren 1 und 2 gezeigten Beispiel sind die Flügel 25 bezüglich der durch den Pfeil 27 gezeigten Rotationsrichtung der Walze 17 über ihre ganze Breite nach hinten umgebogen. Das Umbiegen hat den Zweck, das Hängenbleiben von Fasern zu vermeiden. Durch die Verwendung solcher Flügel ergibt sich der weitere Vorteil, dass im Vorlageschacht 23 die Verwirblung der Flocken kleiner wird, was sich ebenfalls positiv auf die Gleichmässigkeit der Vorlage auswirkt. In einer andern, nicht gezeigten Ausführungsform haben sie die Form von ebenen Streifen, die auf der Mantelfläche 18 sogar senkrecht stehen können. In einer noch weitern Ausführungsform sind sie nur an ihrem von der Mantelfläche entfernten, sich in der Längsrichtung des Flügels erstreckenden Flügelteil nach hinten umgebogen.In the example shown in FIGS. 1 and 2, the vanes 25 are bent back over their entire width with respect to the direction of rotation of the roller 17 shown by the arrow 27. The purpose of bending is to prevent fibers from getting caught. The use of such wings results in the further advantage that the swirling of the flakes becomes smaller in the feed chute 23, which also has a positive effect on the uniformity of the feed. In another embodiment, not shown, they have the shape of flat strips which can even be perpendicular to the lateral surface 18. In a still further embodiment, they are bent back only at their wing part which is remote from the lateral surface and extends in the longitudinal direction of the wing.

In Fig. 3 ist ein solches Beispiel gezeigt. Der Flügel 25 besitzt ein dem Mantel 18 zugewandtes, streifenförmiges Teilstück 33, das eben ausgebildet ist. Jedoch ist ein von der Mantelfläche 18 abgekehrter, streifenförmiger Flügelteil 29, dessen eine Längsseite von einer freien Kante 30 begrenzt ist, umgebogen. Er weist eine Umbiegung auf, bei welcher am Ort der freien Kante 30 die senkrecht zur letztern am Flügelteil 29 anliegenden Tangenten 31 mit den Tangenten zusammenfallen, welche an diesem Ort an der von der Kante 30 bei ihrer Rotation beschriebenen Zylinderfläche 32 anliegen.Such an example is shown in FIG. The wing 25 has a strip-shaped section 33 facing the jacket 18, which is flat. However, a strip-shaped wing part 29 facing away from the lateral surface 18 and one longitudinal side of which is delimited by a free edge 30 is bent. It has a bend in which, at the location of the free edge 30, the tangents 31 perpendicular to the latter on the wing part 29 coincide with the tangents which, at this location, bear against the cylindrical surface 32 described by the edge 30 during its rotation.

Es werden im allgemeinen gute Resultate erzielt, wenn die Höhe der Flügel sich über der Mantelfläche in einem Bereich befindet, der zwischen der Hälfte und zwei Dritteln der Höhe der Nadeln liegt.Good results are generally achieved if the height of the wings is above the lateral surface in a range which is between half and two thirds of the height of the needles.

Es hat sich als günstig erwiesen, die Flügel 25 aus festem Material herzustellen.It has proven to be advantageous to manufacture the wings 25 from a solid material.

Claims (8)

1. Arrangement for supplying a fibre processing machine, for example a card, with fibre flock material, comprising a feed device with two nip rollers together forming a nip line and serving to feed flock material to a rotatable cylindrical opening roller which has needles distributed over its outer surface and extending outwardly therefrom and which is located at the entrance to a feed chute leading to the processing machine, characterised in that strip-like vanes (25) are provided between the needles (19) on the surface (18), arranged substantially parallel to the generatrices thereof, which vanes are fixedly secured to the cylindrical surface of the opening roller (17) along one of their longitudinal sides and extend outwardly therefrom, the height of the vanes (25) from the outer surface (18) being less than the height of the needles (19) from the outer surface (18).
2. Arrangement according to claim 1, characterised in that an operating element (20, 21) is provided, which is located in the region of the fibre material leaving the opening roller (17), and serves to deflect the direction of flow and to reduce the speed of flow of the fibre material.
3. Arrangement according to claim 1, characterised in that the vanes (25) are curved backwardly with respect to the direction of rotation (27) of the roller (17) at least in a strip-like vane portion (29) remote from the outer surface (18) and extending in the longitudinal direction of the vanes (25).
4. Arrangement according to claim 1, characterised in that the needles (19) are arranged in parallel rows extending along the generatrices of the outer surface (18) and the vanes (25) are arranged alternately between these rows.
5. Arrangement according to claim 1, characterised in that the vanes (25) are made of a rigid material.
6. Arrangement according to claim 1, characterised in that the vanes (25) are formed as plane elements.
7. Arrangement according to claim 1, characterised in that the height of the vanes (25) is between one-half and two-thirds of the height of the needles (19).
8. Arrangement according to claim 3, characterised in that at the location of the free end edge (30) of the strip-like vane portion (29) remote from the outer surface, the tangents (31) to this vane portion (29) normal to the end edge (30) coincide with the tangents at the same location ot the cylindrical surface (32) described by the free end edge (30) during the rotation of the opening roller (17).
EP87109220A 1986-07-08 1987-06-26 Installation for feeding a fibre-processing machine Expired - Lifetime EP0255602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2751/86 1986-07-08
CH275186 1986-07-08

Publications (2)

Publication Number Publication Date
EP0255602A1 EP0255602A1 (en) 1988-02-10
EP0255602B1 true EP0255602B1 (en) 1990-04-11

Family

ID=4240785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109220A Expired - Lifetime EP0255602B1 (en) 1986-07-08 1987-06-26 Installation for feeding a fibre-processing machine

Country Status (5)

Country Link
US (1) US4797979A (en)
EP (1) EP0255602B1 (en)
JP (1) JPS6321928A (en)
DE (1) DE3762244D1 (en)
IN (1) IN170121B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333904A1 (en) * 1988-03-24 1989-09-27 Spinnbau GmbH Apparatus for feeding fibre material to a card or the like
DE3904317A1 (en) * 1989-02-14 1990-08-16 Hollingsworth Gmbh DEVICE FOR PNEUMATICALLY FEEDING FIBER GOODS INTO A SHAFT AND THE LIKE
IT1229406B (en) * 1989-06-01 1991-08-08 Marzoli & C Spa MACHINE FOR THE OPENING AND MIXING OF COTTON IN BOW, WITH PERFECTED STRUCTURE.
IT1303784B1 (en) * 1998-11-24 2001-02-23 Flii Marzoli & C S P A DEVICE FOR PREPARATION AND OPENING OF FIBERS IN BOW TO FEED A CARD.
DE10142488A1 (en) * 2001-08-30 2003-03-20 Schlafhorst & Co W Disintegration device for an open-end spinning device
US7032273B2 (en) * 2003-05-12 2006-04-25 Akiva Pinto Fiber mixing and opening machine
CH702443A1 (en) * 2009-12-17 2011-06-30 Rieter Ag Maschf Cleaning device for fiber flocks.
CN104451964A (en) * 2014-11-13 2015-03-25 江南大学 Down feather channel opening device of down feather impurity removing machine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR682071A (en) * 1929-09-20 1930-05-22 Carding insert for carding machine flywheels
US2068587A (en) * 1934-05-22 1937-01-19 Jr Alfred P Aldrich Hopper feeder
GB1298561A (en) * 1969-03-10 1972-12-06 Stewart & Sons Wm R Improvements relating to carding, drawing and other machines and a method of fixing pins in a matrix
GB1284214A (en) * 1970-02-12 1972-08-02 Carding Spec Canada Improvements relating to the feeding of fibrous material to carding machines
CS176655B1 (en) * 1975-02-04 1977-06-30
CS184602B1 (en) * 1976-06-04 1978-08-31 Jaromir Kasparek Fibre separating device for open-end rotor spinning units
FR2479857A1 (en) * 1980-04-04 1981-10-09 Alsacienne Constr Meca FIBER SEPARATOR FOR FEEDING A FIBER RELEASED FIBER STATION
CA1201354A (en) * 1981-08-26 1986-03-04 David B. Stewart Feeding particulate material, especially tobacco
DE3535684C2 (en) * 1985-10-05 1996-06-05 Truetzschler Gmbh & Co Kg Device for feeding an opener or cleaner for textile fiber flakes

Also Published As

Publication number Publication date
IN170121B (en) 1992-02-15
DE3762244D1 (en) 1990-05-17
JPS6321928A (en) 1988-01-29
US4797979A (en) 1989-01-17
EP0255602A1 (en) 1988-02-10

Similar Documents

Publication Publication Date Title
CH628375A5 (en) Spin method for spinning of individual fibres to a thread.
DE2712715A1 (en) SORTER FOR FIBER SUSPENSIONS
CH635138A5 (en) CARD LOADING.
DE3402566A1 (en) DEVICE FOR OE-FRICTION SPINNING
EP0255602B1 (en) Installation for feeding a fibre-processing machine
DE8428776U1 (en) PNEUMATIC FIBER RECOVERY AND REDISTRIBUTION DEVICE FOR FIBER HIGHFLORED KNITTING MACHINES
WO2007019716A1 (en) Cleaning device for a textile machine
DE1946638U (en) DEVICE FOR SEPARATING LOSSED FIBER FLAKES FROM A TRANSPORT AIRFLOW.
EP0382765A1 (en) Carding machine
CH668272A5 (en) DEVICE FOR FEEDING A CARD OR CRAWLE BY MEANS OF TWO FILLERS.
CH674525A5 (en)
EP0835843A2 (en) Device for mixing a flocculation liquid in a sewage sludge stream and use of the device
DE2059177A1 (en) Process and device for wet spinning
DE10122459A1 (en) Device on a card, cleaning machine, opening machine or the like for fiber material
DE69909715T2 (en) Device for preparing and opening fiber flakes delivered to a card
CH674746A5 (en)
DE2159230A1 (en) Device for combing fibers out of fiber structures for textile machines, in particular machines for spindleless spinning
EP1080259A1 (en) Dirt remover
DE3403964A1 (en) DEVICE FOR OE-FRICTION SPINNING
DE2730545A1 (en) PNEUMATIC SYSTEM FOR FEEDING A VARIETY OF CARDS
CH691380A5 (en) Device for separating the dissolved fiber flocks from an air stream.
CH691861A5 (en) A device for cleaning fiber material at an open-end spinning aggregate.
DE19522995B4 (en) Fibre sepn. from conveying air stream esp. in card chute feed - has high air velocities in air separation chambers to reduce trash deposits
EP3569745B1 (en) Open end spinning arrangement for an open end spinning machine
DE882209C (en) Method and device for the production of a fiber fleece

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19880226

17Q First examination report despatched

Effective date: 19890731

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3762244

Country of ref document: DE

Date of ref document: 19900517

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: GUZZI E RAVIZZA S.R.L.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920520

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930512

Year of fee payment: 7

Ref country code: DE

Payment date: 19930512

Year of fee payment: 7

Ref country code: CH

Payment date: 19930512

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940630

Ref country code: CH

Effective date: 19940630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940626

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050626