EP1657328A2 - Fibre-opening unit having teeth with improved contour - Google Patents

Fibre-opening unit having teeth with improved contour Download PDF

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Publication number
EP1657328A2
EP1657328A2 EP05110353A EP05110353A EP1657328A2 EP 1657328 A2 EP1657328 A2 EP 1657328A2 EP 05110353 A EP05110353 A EP 05110353A EP 05110353 A EP05110353 A EP 05110353A EP 1657328 A2 EP1657328 A2 EP 1657328A2
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EP
European Patent Office
Prior art keywords
tooth
teeth
height
opening device
angle
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.)
Granted
Application number
EP05110353A
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German (de)
French (fr)
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EP1657328B1 (en
EP1657328A3 (en
Inventor
Edmund Schuller
Josef Schermer
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Rieter Ingolstadt GmbH
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Rieter Ingolstadt Spinnereimaschinenbau AG
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Publication of EP1657328A3 publication Critical patent/EP1657328A3/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips

Definitions

  • the present invention relates to an opening device for textile machines, in particular for spinning machines, such as open-end or air jet spinning machines, with an opening roller on the outer circumference of a plurality of teeth is arranged.
  • tooth geometries for resolving devices have been developed which, for example, have as universal characteristics as possible have to be able to process as many types of fibers.
  • Other tooth geometries have been optimized for individual fiber types, resulting in being limited in their utility and being suitable, for example, either only for natural fibers such as cotton or exclusively for synthetic fibers such as viscose or polyester fibers.
  • a Feinffygarnitur an opening roller for an open-end spinning machine is known, which is equipped with teeth whose tooth pitch significantly exceeds the tooth height and which has a positive breast angle.
  • the tooth pitch is at least three times the tooth height and the breast angle at most 10 °.
  • This fine tooth set where the tooth height is less than 2 mm, is specially designed for processing synthetic fiber material.
  • the very close arrangement of the teeth is intended to ensure that the relatively stiff fibers of synthetic material leave the teeth of the opening roller in time at the entrance to the feed channel.
  • the fine, closely spaced teeth prevent that the fibers penetrate too deep into the Fein leopardgarnitur. This causes them to easily peel off what z. B. in the vicinity of a feed channel is desirable.
  • the object of the invention is therefore to provide a tooth geometry, with the help of which a good dissolving power of the fiber material as well as a good release of the fibers after the dissolution process can be achieved.
  • the inventive opening device is characterized in that the teeth are arranged with a tooth spacing of at most 20 mm, preferably of less than 12 mm, consist of at least two sections, wherein a first lying on a tooth tip portion of a positive or at least has vertical chest angle and a second portion is a sloping in the direction of movement of the clothing bevel, and that the distance between the tooth tip and a point of contact of a vertical tangent at the transition region between the first and the second portion forms a technologically effective tooth height, the ratio of technologically more effective Tooth height to tooth spacing is at most 1.
  • the invention has recognized that the subdivision of the tooth in two or more sections is able to solve the task mentioned above.
  • the first section of the tooth which extends from the tooth tip in the direction of the tooth root, forms the region which is responsible for the particularly good resolving power of the inventively designed opening device.
  • the forward and in the direction of movement of the teeth Tooth side called tooth side is perpendicular or slightly inclined forward. The farther the tooth face is inclined forward in the direction of movement, the larger becomes the so-called breast angle. The larger the angle of the breast is, the better the resolving power of the teeth thus formed, since the fibers can attack it particularly well.
  • the present invention now provides a remedy and arranges the second portion of the tooth, which extends for example from a range of half the tooth height down to the tooth root.
  • the second section is designed as a slope, which drops in the direction of movement of the opening device downwards. The slope forming the second portion prevents the fibers attached to the first portion from sliding too deep in the direction of the tooth root along the tooth.
  • the dissolved fibers are held predominantly in the upper region of the tooth and easily detach at the desired location, such as an opening to a fiber feed channel.
  • the inventively designed opening device thus combines the advantage of particularly good dissolving tooth geometries with the advantage of particularly good detaching tooth geometries.
  • an angle of 3 ° -60 °, preferably 30 ° -50 ° is set between the vertical tangent and the second portion. Slopes with an angle in these areas have proven to be particularly effective.
  • the teeth designed according to the invention are formed on a clothing wire which is fastened on an opening roller body.
  • This Gamiturdrähte can be made very efficiently from long wires and then assembled accordingly.
  • a foot height of the clothing wire is less than 2.5 mm.
  • the clothing wire is usually made from a substantially elongated wire. This means that at the latest when garnishing the opening roller body it is to be bent into a spiral shape corresponding to the roller body. This can take place, for example, during garnishing or else in a preceding production step, for example before a hardening process.
  • the invention has found that clothing wires with foot heights of less than 2.5 mm are still well deformed without, for example, by fractures serious damage to Gamiturdraht occur.
  • clothing wires with heights of in the range of 1.5 to 2.4 mm have proven in many applications to be particularly unproblematic in the processing, at the same time sufficient strength.
  • the ratio of technologically effective tooth height to foot height is between 0.2 and 1.5, preferably between 0.7 and 1 in the opening device. If, for example, a technologically effective tooth height of 1 mm and a foot height of 1.8 mm are used, the result is a ratio of about 0.55.
  • opening roller, the Gamiturdraht and the ring gear are also characterized by the fact that it attached tooth contour is configured according to one of the embodiments described above. Accordingly, the same advantages arise for these devices as for the described opening device.
  • FIG. 1 shows a side view of a section of a clothing wire 1 according to the invention.
  • the teeth 2 are each arranged at a tooth spacing of length L z .
  • the intended direction of movement of the clothing wire 1 has according to the arrow 3 to the right.
  • the teeth 2 have a tooth height H z , which extends from a tooth root 4 to a tooth tip 5.
  • the back of the tooth 2 is formed by a tooth back 6, which drops approximately at an angle of 45 °.
  • the front side of the tooth 2 is divided into two sections, the first section being formed by a chest region 7 and the second section by a bevel 8.
  • All sections of the tooth contour, ie back of the teeth 6, chest area 7, bevel 8 and tooth root 4 are tangent-continuous with each other and are each connected by radii of different sizes.
  • a vertical Tangent 10 created whose point of contact with the rounding 9 forms the lower limit of a technologically effective tooth height.
  • the upper limit of the technologically effective tooth height is at the tooth tip 5.
  • a bevel angle W S is set , which in the present case is approximately 45 °.
  • the chest region 7 is in turn arranged with respect to a vertical 11 at a breast angle W B.
  • the breast angle W B is selected to be positive in the example shown, so that the tooth tip 5 projects in the direction of movement 3. It is a positive breast angle, which is approximately 7 ° in the embodiment shown.
  • FIG. 2 shows once more a tooth 2 of the clothing wire 1 from FIG.
  • the position of the technologically effective tooth height H t is particularly well recognizable. This extends from the tooth tip 5 to the point of contact of the tangents 10 with the rounding 9. From this point of contact down to the tooth root 4, the height H S extends the slope 8. From the tooth base 4 down to a lower edge 12 of the clothing wire 1 extends the Foot height H F. From an edge 13 located at the side down to the lower edge 12, the height H G of a toothed path lying between the wound rows of teeth extends.
  • the foot height H F of the inventively formed Gamiturdrumblete should not exceed 2.5 mm.
  • the foot height H F is selected in the range of 1.5-2.2 mm.
  • the height H G is preferably between 1.0 and 1.7 mm.
  • it is also sufficient to choose a technologically effective tooth height H t which is in the range of 0.5 - 1.5 mm.
  • the technologically effective tooth height H t can also be chosen above or below.
  • FIG. 3 shows a sectional view through the clothing wire according to the invention along the line AA in FIG. 1. It can be seen that the left side of the clothing wire runs vertically, whereas the right side of the tooth tapers at an angle, so that the tooth 2 tapers upwards.
  • This is a possible technical embodiment, as is often chosen in the use of punching processes for the production of clothing wires.
  • other, for example, symmetrical design forms of the tooth longitudinal profile in the context of the invention are applicable.
  • the underside of the toothed lane which initially increases from the edge 13 in the direction of the tooth 2 at an angle, can optionally also be formed horizontally, whereby the effect of the invention is not affected.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The teeth of an opening roller are at most spaced (L 2) 20 mm, preferably 12 mm, apart and have a height (H 2) no greater than the spacing (L 2). Near the tip (5) the leading edge (7) makes a positive angle (WB) of 0 to 10 degrees. Near the root the edge (8) is at an angle (WS) to the vertical tangent (10), e.g. at 30 to 50 degrees. The height of the tooth base is less than 2.5 mm, e.g. 0.7 to 1 times the tooth height (H 2). Independent claims are also included for a spinning machine opening roller furnished with such teeth and for card clothing wire or wire rings having teeth of this kind.

Description

Die vorliegende Erfindung betrifft eine Auflöseeinrichtung für Textilmaschinen, insbesondere für Spinnmaschinen, wie beispielsweise Offenend- oder Luftdüsenspinnmaschinen, mit einer Auflösewalze an deren Außenumfang eine Vielzahl von Zähnen angeordnet ist.The present invention relates to an opening device for textile machines, in particular for spinning machines, such as open-end or air jet spinning machines, with an opening roller on the outer circumference of a plurality of teeth is arranged.

Bei modernen Textilmaschinen, wie beispielsweise Spinnmaschinen, ist es zur Erzeugung eines Garns aus einem Fasermaterial erforderlich, das Fasermaterial zunächst zu einzelnen Fasern aufzulösen, bevor es in einem nachfolgenden Arbeitsschritt, wie beispielsweise einem Spinnvorgang, zu einem das Gam bildenden Faserverbund versponnen werden kann. Hierbei werden teilweise ganz unterschiedliche Anforderungen an die verwendeten Auflöseeinrichtungen gestellt. Dies liegt daran, daß teilweise sehr unterschiedliche Faserarten zu verarbeiten sind, die darüber hinaus noch in sehr unterschiedlichen Zuständen zu verarbeiten sind. Beispielsweise sei hier der Unterschied zwischen Naturfasern, wie etwa Baumwollfasern, und Chemiefasern, wie etwa Filamentfasern, erwähnt. Beide Faserarten haben höchst unterschiedliche Fasereigenschaften, die es in einer Auflöseeinrichtung zu beherrschen gilt. Darüber hinaus sind Baumwollfasern häufig von Verunreinigungen, wie beispielsweise Schalen oder Sand begleitet, die es ebenfalls störungsfrei zu verarbeiten gilt.In modern textile machines, such as spinning machines, it is necessary to produce a yarn of a fiber material, the fiber material first to dissolve individual fibers before it can be spun in a subsequent operation, such as a spinning process, to a Gam forming fiber composite. In some cases very different requirements are placed on the dissolving devices used. This is because sometimes very different types of fibers are to be processed, which are also still to process in very different states. For example, mention may be made here of the difference between natural fibers, such as cotton fibers, and man-made fibers, such as filament fibers. Both types of fiber have very different fiber properties, which is to be controlled in a resolving device. In addition, cotton fibers are often accompanied by impurities, such as shells or sand, which also has to be processed trouble-free.

In der Vergangenheit wurden deshalb zahlreiche Zahngeometrien für Auflöseeinrichtungen entwickelt, welche z.B. möglichst universelle Eigenschaften aufweisen, d. h. möglichst viele Faserarten verarbeiten zu können. Andere Zahngeometrien wurden beispielsweise auf einzelne Faserarten hin optimiert, was darin resultiert, daß sie in ihrer Verwendbarkeit beschränkt sind und beispielsweise entweder nur für Naturfasern wie Baumwolle oder ausschließlich für synthetische Fasern, wie beispielsweise Viskose oder Polyesterfasern geeignet sind.In the past, therefore, numerous tooth geometries for resolving devices have been developed which, for example, have as universal characteristics as possible have to be able to process as many types of fibers. Other tooth geometries, for example, have been optimized for individual fiber types, resulting in being limited in their utility and being suitable, for example, either only for natural fibers such as cotton or exclusively for synthetic fibers such as viscose or polyester fibers.

Weiterhin ist aus der DE 199 21 965 A1 eine Feinzahngarnitur einer Auflösewalze für eine Offenend-Spinnmaschine bekannt, die mit Zähnen ausgestattet ist, deren Zahnteilung die Zahnhöhe deutlich übertrifft und die einen positiven Brustwinkel aufweist. Bei dieser Feinzahngarnitur ist vorgesehen, daß die Zahnteilung wenigstens das Dreifache der Zahnhöhe und der Brustwinkel höchstens 10° beträgt. Diese Feinzahngarnitur, bei der die Zahnhöhe unter 2 mm liegt, ist speziell zur Verarbeitung von synthetischem Fasermaterial bestimmt. Die sehr enge Anordnung der Zähne soll gewährleisten, daß die verhältnismäßig steifen Fasern aus synthetischem Material am Eingang zum Speisekanal die Zähne der Auflösewalze rechtzeitig verlassen. Die feinen, eng aneinander angeordneten Zähne verhindern dabei, daß die Fasern allzu tief in die Feinzahngarnitur eindringen. Dies bewirkt, daß sich diese leicht ablösen, was z. B. in der Nähe eines Speisekanals wünschenswert ist.Furthermore, from DE 199 21 965 A1 a Feinzahngarnitur an opening roller for an open-end spinning machine is known, which is equipped with teeth whose tooth pitch significantly exceeds the tooth height and which has a positive breast angle. In this Feinzahngarnitur is provided that the tooth pitch is at least three times the tooth height and the breast angle at most 10 °. This fine tooth set, where the tooth height is less than 2 mm, is specially designed for processing synthetic fiber material. The very close arrangement of the teeth is intended to ensure that the relatively stiff fibers of synthetic material leave the teeth of the opening roller in time at the entrance to the feed channel. The fine, closely spaced teeth prevent that the fibers penetrate too deep into the Feinzahngarnitur. This causes them to easily peel off what z. B. in the vicinity of a feed channel is desirable.

Die technologischen Eigenschaften von Auflöseeinrichtungen werden aber nicht nur durch die Größe der verwendeten Zähne, sondern auch durch deren Geometrie entscheidend beeinflußt. Als Beispiele seien hier der sehr wichtige Brustwinkel der einzelnen Zähne und die vorgesehene Relativgeschwindigkeit zwischen Zahn und Fasern genannt. Ausgehend von diesem Stand der Technik hat sich gezeigt, daß bei bestimmten Anwendungsfällen immer noch Schwierigkeiten bei der Gestaltung der Zahngeometrie bestehen. Dies liegt daran, daß bestimmte Zahngeometrien das Fasermaterial besonders gut auflösen, die einzelnen Fasern jedoch danach nur in unzureichendem Maß wieder abgeben. Andere Zahngeometrien wiederum haben eine gute Abgabe der aufgelösten Fasern, lassen jedoch bei der Auflösung der Fasern zu wünschen übrig.However, the technological properties of resolving devices are not only decisively influenced by the size of the teeth used, but also by their geometry. Examples include the very important breast angle of the individual teeth and the proposed relative speed between tooth and fibers. Based on this prior art has been shown that in certain applications, there are still difficulties in the design of the tooth geometry. This is due to the fact that certain tooth geometries dissolve the fiber material particularly well, but thereafter release the individual fibers only to an insufficient extent. Turn have other tooth geometries a good release of the dissolved fibers, but leave at the resolution of the fibers to be desired.

Aufgabe der Erfindung ist es daher, eine Zahngeometrie zu schaffen, mit deren Hilfe gleichzeitig ein gutes Auflösevermögen des Fasermaterials als auch eine gute Abgabe der Fasern nach dem Auflösevorgang erreichbar ist.The object of the invention is therefore to provide a tooth geometry, with the help of which a good dissolving power of the fiber material as well as a good release of the fibers after the dissolution process can be achieved.

Zur Lösung der vorliegenden Aufgabe ist die erfindungsgemäße Auflöseeinrichtung dadurch gekennzeichnet, daß die Zähne mit einem Zahnabstand von höchstens 20 mm, vorzugsweise von unter 12 mm, angeordnet sind, mindestens aus zwei Abschnitten bestehen, wobei ein erster an einer Zahnspitze liegender Abschnitt einen positiven oder zumindest senkrechten Brustwinkel aufweist und ein zweiter Abschnitt eine in Bewegungsrichtung der Garnitur abfallenden Schräge ist, und daß der Abstand zwischen der Zahnspitze und einem Berührungspunkt einer vertikalen Tangente am Übergangsbereich zwischen dem ersten und dem zweiten Abschnitt eine technologisch wirksame Zahnhöhe bildet, wobei das Verhältnis von technologisch wirksamer Zahnhöhe zu Zahnabstand höchstens 1 beträgt. Bei den für synthetische Fasern bestimmten Garnituren haben sich beispielsweise technologisch wirksame Zahnhöhen von ca. 1 mm und Zahnabstände von ca. 4 mm als besonders vorteilhaft erwiesen, woraus sich eine Verhältniszahl von 0.25 ergibt. Die technologisch wirksamen Zahnhöhen, welche besonders vorteilhaft anwendbar sind, liegen dabei überwiegend im Bereich zwischen 0,3 mm und 1,8 mm, vorzugsweise bei ca. 1 mm.To achieve the object, the inventive opening device is characterized in that the teeth are arranged with a tooth spacing of at most 20 mm, preferably of less than 12 mm, consist of at least two sections, wherein a first lying on a tooth tip portion of a positive or at least has vertical chest angle and a second portion is a sloping in the direction of movement of the clothing bevel, and that the distance between the tooth tip and a point of contact of a vertical tangent at the transition region between the first and the second portion forms a technologically effective tooth height, the ratio of technologically more effective Tooth height to tooth spacing is at most 1. Technically effective tooth heights of about 1 mm and tooth spacings of about 4 mm, for example, have proven to be particularly advantageous in the trimmings intended for synthetic fibers, resulting in a ratio of 0.25. The technologically effective tooth heights, which are particularly advantageous applicable, are predominantly in the range between 0.3 mm and 1.8 mm, preferably at about 1 mm.

Die Erfindung hat erkannt, daß die Unterteilung des Zahnes in zwei oder mehr Abschnitte die eingangs genannte Aufgabenstellung zu lösen vermag. So bildet der erste Abschnitt des Zahnes, der von der Zahnspitze sich in Richtung des Zahnfußes erstreckt, den Bereich, der für das besonders gute Auflösevermögen der erfindungsgemäß gestalteten Auflöseeinrichtung verantwortlich ist. Die in Bewegungsrichtung der Zähne vorne liegende und auch Zahnbrust genannte Zahnseite steht dabei senkrecht oder ist etwas nach vorne geneigt. Je weiter die Zahnbrust in Bewegungsrichtung nach vorne geneigt ist, desto größer wird der sogenannte Brustwinkel. Je größer wiederum der Brustwinkel ist, desto besser ist das Auflösevermögen der so gestalteten Zähne, da die Fasern daran besonders gut angreifen können. Im Gegensatz zu bekannten Zahngeometrien, bei denen die Fasern ebenfalls besonders gut anhaften, wird bei der erfindungsgemäßen Ausführungsform aber zusätzlich erreicht, daß sich die Fasern auch wieder gut lösen. So waren zwar bisher schon Vorrichtungen bekannt die Fasern besonders gut aufzulösen vermögen, diese sind aber mit dem Nachteil des unerwünscht starken Anhaften der Fasern an der Auflöseeinrichtung verbunden. Hier schafft die vorliegende Erfindung nun Abhilfe und ordnet den zweiten Abschnitt am Zahn an, der sich beispielsweise von einem Bereich von der halben Zahnhöhe bis hinunter zum Zahnfuß erstreckt. Der zweite Abschnitt ist dabei als Schräge ausgebildet, die in Bewegungsrichtung der Auflöseeinrichtung nach unten hin abfällt. Die den zweiten Abschnitt bildende Schräge verhindert, daß die am ersten Abschnitt angelagerten Fasern zu tief in Richtung des Zahnfußes am Zahn entlang gleiten. Auf diese Weise werden die aufgelösten Fasern vorwiegend im oberen Bereich des Zahns gehalten und lösen sich an der gewünschten Stelle, wie beispielsweise einer Öffnung zu einem Faserspeisekanal, leicht wieder ab. Die erfindungsgemäß gestaltete Auflöseeinrichtung verbindet damit den Vorteil besonders gut auflösender Zahngeometrien mit dem Vorteil besonders gut ablösender Zahngeometrien.The invention has recognized that the subdivision of the tooth in two or more sections is able to solve the task mentioned above. Thus, the first section of the tooth, which extends from the tooth tip in the direction of the tooth root, forms the region which is responsible for the particularly good resolving power of the inventively designed opening device. The forward and in the direction of movement of the teeth Tooth side called tooth side is perpendicular or slightly inclined forward. The farther the tooth face is inclined forward in the direction of movement, the larger becomes the so-called breast angle. The larger the angle of the breast is, the better the resolving power of the teeth thus formed, since the fibers can attack it particularly well. In contrast to known tooth geometries in which the fibers also adhere particularly well, in the embodiment according to the invention, however, it is additionally achieved that the fibers also dissolve well again. Although devices have hitherto been known which are able to dissolve the fibers particularly well, these are associated with the disadvantage of undesirably strong adhesion of the fibers to the dissolving device. Here, the present invention now provides a remedy and arranges the second portion of the tooth, which extends for example from a range of half the tooth height down to the tooth root. The second section is designed as a slope, which drops in the direction of movement of the opening device downwards. The slope forming the second portion prevents the fibers attached to the first portion from sliding too deep in the direction of the tooth root along the tooth. In this way, the dissolved fibers are held predominantly in the upper region of the tooth and easily detach at the desired location, such as an opening to a fiber feed channel. The inventively designed opening device thus combines the advantage of particularly good dissolving tooth geometries with the advantage of particularly good detaching tooth geometries.

Bei bevorzugten Ausführungsformen der Erfindung ist vorgesehen, daß zwischen der vertikalen Tangente und dem zweiten Abschnitt ein Winkel von 3°-60°, vorzugsweise von 30°-50° eingestellt ist. Schrägen mit einem Winkel in diesen Bereichen haben sich als besonders wirksam erwiesen.In preferred embodiments of the invention, it is provided that an angle of 3 ° -60 °, preferably 30 ° -50 ° is set between the vertical tangent and the second portion. Slopes with an angle in these areas have proven to be particularly effective.

Ganz besonders vorteilhaft ist es auch, wenn die erfindungsgemäß gestalteten Zähne an einem Garniturdraht ausgebildet sind, der auf einem Auflösewalzenkörper befestigt ist. Diese Gamiturdrähte können sehr rationell aus langen Drähten gefertigt und dann entsprechend konfektioniert werden.It is also particularly advantageous if the teeth designed according to the invention are formed on a clothing wire which is fastened on an opening roller body. This Gamiturdrähte can be made very efficiently from long wires and then assembled accordingly.

Als ganz besonders vorteilhaft hat es sich dazu erwiesen, wenn eine Fußhöhe des Garniturdrahts kleiner als 2,5 mm ist. Der Garniturdraht wird meist aus einem im wesentlichen länglichen Draht hergestellt. Dies bedeutet, daß er spätestens beim Garnieren der Auflösewalzenkörper in eine zum Walzenkörper korrespondierende Spiralform zu verbiegen ist. Dies kann beispielsweise beim Garnieren erfolgen oder aber auch in einem vorhergehenden Herstellungsschritt, wie beispielsweise vor einem Härtevorgang. Hier hat die Erfindung herausgefunden, daß Garniturdrähte mit Fußhöhen von unter 2,5 mm noch gut verformbar sind, ohne daß beispielsweise durch Brüche gravierende Beschädigungen am Gamiturdraht auftreten. Insbesondere Garniturdrähte mit Fußhöhen von im Bereich von 1,5 bis 2,4 mm haben sich bei vielen Anwendungsfällen als besonders unproblematisch in der Verarbeitung erwiesen, bei gleichzeitig ausreichender Festigkeit.It has proven to be particularly advantageous if a foot height of the clothing wire is less than 2.5 mm. The clothing wire is usually made from a substantially elongated wire. This means that at the latest when garnishing the opening roller body it is to be bent into a spiral shape corresponding to the roller body. This can take place, for example, during garnishing or else in a preceding production step, for example before a hardening process. Here, the invention has found that clothing wires with foot heights of less than 2.5 mm are still well deformed without, for example, by fractures serious damage to Gamiturdraht occur. In particular, clothing wires with heights of in the range of 1.5 to 2.4 mm have proven in many applications to be particularly unproblematic in the processing, at the same time sufficient strength.

Zur Bestimmung einer besonders gut funktionierenden Zahnkontur hat es sich zudem als vorteilhaft erwiesen, wenn bei der Auflöseeinrichtung das Verhältnis von technologisch wirksamer Zahnhöhe zur Fußhöhe zwischen 0.2 und 1.5, vorzugsweise zwischen 0.7 und 1 liegt. Verwendet man beispielsweise eine technologisch wirksame Zahnhöhe von 1 mm und eine Fußhöhe von 1,8 mm, so ergibt sich daraus ein Verhältnis von etwa 0.55.To determine a particularly well-functioning tooth contour, it has also proven to be advantageous if the ratio of technologically effective tooth height to foot height is between 0.2 and 1.5, preferably between 0.7 and 1 in the opening device. If, for example, a technologically effective tooth height of 1 mm and a foot height of 1.8 mm are used, the result is a ratio of about 0.55.

Darüber hinaus hat es sich für das Auflösevermögen der Zahnkontur als vorteilhaft erwiesen, wenn der Brustwinkel in einem Bereich von 0° bis 10° liegt.In addition, it has proved to be advantageous for the resolving power of the tooth contour when the breast angle is in a range of 0 ° to 10 °.

Die weiterhin von der Erfindung vorgeschlagene Auflösewalze, der Gamiturdraht und der Garniturring zeichnen sich ebenfalls dadurch aus, daß die daran angebrachte Zahnkontur nach einer der zuvor beschriebenen Ausführungsformen ausgestaltet ist. Dementsprechend ergeben sich für diese Vorrichtungen die gleichen Vorteile, wie für die beschriebene Auflöseeinrichtung.The further proposed by the invention opening roller, the Gamiturdraht and the ring gear are also characterized by the fact that it attached tooth contour is configured according to one of the embodiments described above. Accordingly, the same advantages arise for these devices as for the described opening device.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. In der Zeichnung zeigt:

Figur 1
eine Seitenansicht eines Abschnitts eines erfindungsgemäß gestalteten Garniturdrahtes;
Figur 2
eine vergrößerte Darstellung eines einzelnen Zahns des erfindungsgemäßen Garniturdrahts nach Figur 1 und
Figur 3
eine Schnittansicht entlang der Linie A-A durch den erfindungsgemäßen Gamiturdraht nach Figur 1.
Further advantages and features of the invention will become apparent from the following description of an embodiment. In the drawing shows:
FIG. 1
a side view of a portion of an inventively designed Garniturdrahtes;
FIG. 2
an enlarged view of a single tooth of the Garniturdrahts according to Figure 1 and
FIG. 3
a sectional view taken along the line AA through the Gamiturdraht invention of Figure 1.

In Figur 1 ist eine Seitenansicht eines Abschnitts eines erfindungsgemäßen Garniturdrahts 1 dargestellt. An der Oberseite des Garniturdrahts 1 sind vier Zähne 2 angeordnet. Die Zähne 2 sind jeweils in einem Zahnabstand der Länge Lz angeordnet. Die vorgesehene Bewegungsrichtung des Garniturdrahts 1 weist entsprechend dem Pfeil 3 nach rechts. Die Zähne 2 weisen eine Zahnhöhe Hz auf, die von einem Zahnfuß 4 bis zu einer Zahnspitze 5 reicht. Die Rückseite des Zahns 2 wird von einem Zahnrücken 6 gebildet, der in etwa unter einem Winkel von 45° abfällt. Die Vorderseite des Zahns 2 ist in zwei Abschnitte unterteilt, wobei der erste Abschnitt von einem Brustbereich 7 und der zweite Abschnitt von einer Schräge 8 gebildet wird. Alle Abschnitte der Zahnkontur, d.h. Zahnrücken 6, Brustbereich 7, Schräge 8 und Zahnfuß 4 gehen tangentenstetig ineinander über und sind jeweils durch unterschiedlich große Radien miteinander verbunden. An einer Verrundung 9 zwischen dem Brustbereich 7 und der Schräge 8 ist eine vertikale Tangente 10 angelegt, deren Berührpunkt mit der Verrundung 9 die Untergrenze einer technologisch wirksamen Zahnhöhe bildet. Die obere Grenze der technologisch wirksamen Zahnhöhe liegt an der Zahnspitze 5. Zwischen der vertikalen Tangente 10 und der Schrägen 8 ist ein Schrägenwinkel WS aufgespannt, der im vorliegenden Fall ca. 45° beträgt. Der Brustbereich 7 ist seinerseits bezogen auf eine Vertikale 11 unter einem Brustwinkel WB angeordnet. Der Brustwinkel WB ist in dem gezeigten Beispiel positiv gewählt, so daß die Zahnspitze 5 in Bewegungsrichtung 3 vorsteht. Es handelt sich dabei um einen positiven Brustwinkel, der in der gezeigten Ausführungsform ca. 7° beträgt.FIG. 1 shows a side view of a section of a clothing wire 1 according to the invention. At the top of Garniturdrahts 1 four teeth 2 are arranged. The teeth 2 are each arranged at a tooth spacing of length L z . The intended direction of movement of the clothing wire 1 has according to the arrow 3 to the right. The teeth 2 have a tooth height H z , which extends from a tooth root 4 to a tooth tip 5. The back of the tooth 2 is formed by a tooth back 6, which drops approximately at an angle of 45 °. The front side of the tooth 2 is divided into two sections, the first section being formed by a chest region 7 and the second section by a bevel 8. All sections of the tooth contour, ie back of the teeth 6, chest area 7, bevel 8 and tooth root 4 are tangent-continuous with each other and are each connected by radii of different sizes. At a rounding 9 between the chest area 7 and the slope 8 is a vertical Tangent 10 created whose point of contact with the rounding 9 forms the lower limit of a technologically effective tooth height. The upper limit of the technologically effective tooth height is at the tooth tip 5. Between the vertical tangent 10 and the bevels 8, a bevel angle W S is set , which in the present case is approximately 45 °. The chest region 7 is in turn arranged with respect to a vertical 11 at a breast angle W B. The breast angle W B is selected to be positive in the example shown, so that the tooth tip 5 projects in the direction of movement 3. It is a positive breast angle, which is approximately 7 ° in the embodiment shown.

In Figur 2 ist ein Zahn 2 des Garniturdrahts 1 aus Figur 1 nochmals vergrößert dargestellt. Mit der vergrößerten Darstellung ist besonders gut die Lage der technologisch wirksamen Zahnhöhe Ht erkennbar. Diese reicht von der Zahnspitze 5 bis zum Berührpunkt der Tangenten 10 mit der Verrundung 9. Von diesem Berührpunkt abwärts bis zum Zahnfuß 4 erstreckt sich die Höhe HS der Schräge 8. Vom Zahnfuß 4 abwärts bis zu einer Unterkante 12 des Garniturdrahts 1 erstreckt sich die Fußhöhe HF. Von einer an der Seite befindlichen Kante 13 bis hinunter zur Unterkante 12 erstreckt sich die Höhe HG einer zwischen den aufgewickelten Zahnreihen liegenden Zahngasse. Die Fußhöhe HF der erfindungsgemäß ausgebildeten Gamiturdrähte sollte 2,5 mm nicht überschreiten. Bei bevorzugten Ausführungsbeispielen wird die Fußhöhe HF im Bereich von 1,5 - 2,2 mm gewählt. Die Höhe HG ist vorzugsweise zwischen 1,0 und 1,7 mm. In den allermeisten Fällen ist es auch ausreichend, eine technologisch wirksame Zahnhöhe Ht zu wählen, die im Bereich von 0,5 - 1,5 mm liegt. Bei Sonderfällen kann die technologisch wirksame Zahnhöhe Ht aber auch darüber oder darunter gewählt werden.FIG. 2 shows once more a tooth 2 of the clothing wire 1 from FIG. With the enlarged view, the position of the technologically effective tooth height H t is particularly well recognizable. This extends from the tooth tip 5 to the point of contact of the tangents 10 with the rounding 9. From this point of contact down to the tooth root 4, the height H S extends the slope 8. From the tooth base 4 down to a lower edge 12 of the clothing wire 1 extends the Foot height H F. From an edge 13 located at the side down to the lower edge 12, the height H G of a toothed path lying between the wound rows of teeth extends. The foot height H F of the inventively formed Gamiturdrähte should not exceed 2.5 mm. In preferred embodiments, the foot height H F is selected in the range of 1.5-2.2 mm. The height H G is preferably between 1.0 and 1.7 mm. In most cases, it is also sufficient to choose a technologically effective tooth height H t , which is in the range of 0.5 - 1.5 mm. In special cases, the technologically effective tooth height H t can also be chosen above or below.

Die Figur 3 schließlich zeigt ein Schnittansicht durch den erfindungsgemäßen Garniturdraht entsprechend der Linie A-A in Figur 1. Dabei ist erkennbar, daß die linke Seite des Garniturdrahts senkrecht verläuft, wohingegen die rechte Seite des Zahnes winklig zuläuft, so daß sich der Zahn 2 nach oben hin verjüngt. Dies ist eine mögliche technische Ausführungsform, wie sie häufig bei der Verwendung von Stanzverfahren zur Herstellung von Garniturdrähten gewählt wird. Daneben sind aber auch andere, beispielsweise symmetrische Gestaltungsformen des Zahnlängsprofils im Rahmen der Erfindung anwendbar. Auch die Unterseite der Zahngasse, die von der Kante 13 in Richtung des Zahns 2 zunächst unter einem Winkel ansteigt, kann wahlweise auch horizontal ausgebildet sein, wodurch der Effekt der Erfindung nicht beeinflußt wird.Finally, FIG. 3 shows a sectional view through the clothing wire according to the invention along the line AA in FIG. 1. It can be seen that the left side of the clothing wire runs vertically, whereas the right side of the tooth tapers at an angle, so that the tooth 2 tapers upwards. This is a possible technical embodiment, as is often chosen in the use of punching processes for the production of clothing wires. In addition, however, other, for example, symmetrical design forms of the tooth longitudinal profile in the context of the invention are applicable. Also, the underside of the toothed lane, which initially increases from the edge 13 in the direction of the tooth 2 at an angle, can optionally also be formed horizontally, whereby the effect of the invention is not affected.

Darüber hinaus ist die vorliegende Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt. Es sind vielmehr zahlreiche Abwandlungen der Erfindung im Rahmen der Patentansprüche möglich. So können innerhalb der offenbarten Wertebereiche zahlreiche unterschiedliche Konturen entworfen werden, die allesamt die erfindungsgemäßen Vorzüge aufweisen und unter die Erfindung fallen. Außerdem ist die Erfindung gleichermaßen vorteilhaft sowohl an Garniturringen, wie auch an den beschriebenen Garniturdrähten anwendbar.Moreover, the present invention is not limited to the illustrated embodiment. Rather, numerous modifications of the invention within the scope of the claims are possible. Thus, within the disclosed ranges of values, numerous different contours can be designed, all of which have the advantages according to the invention and fall within the scope of the invention. In addition, the invention is equally advantageously applicable both to clothing rings, as well as to the described clothing wires.

Claims (8)

Auflöseeinrichtung für Textilmaschinen, insbesondere für Spinnmaschinen bzw. Offenend-Spinnmaschinen, mit einer Auflösewalze an deren Außenumfang eine Vielzahl von Zähnen (2) angeordnet ist, dadurch gekennzeichnet, daß die Zähne (2) mit einem Zahnabstand (Lz) von höchstens 20 mm, vorzugsweise von unter 12 mm, angeordnet sind und mindestens aus zwei Abschnitten bestehen, wobei ein erster an einer Zahnspitze (5) liegender Abschnitt einen positiven oder zumindest senkrechten Brustwinkel (WB) aufweist und ein zweiter Abschnitt eine in Bewegungsrichtung (3) der Garnitur abfallenden Schräge (8) ist, und daß der Abstand zwischen der Zahnspitze (5) und einem Berührungspunkt einer vertikalen Tangente (10) am Übergangsbereich zwischen dem ersten und dem zweiten Abschnitt eine technologisch wirksame Zahnhöhe (Ht) bildet, wobei das Verhältnis von technologisch wirksamer Zahnhöhe zu Zahnabstand höchstens 1 beträgt.Opening device for textile machines, in particular for spinning machines or open-end spinning machines, with an opening roller on the outer periphery of a plurality of teeth (2) is arranged, characterized in that the teeth (2) with a tooth spacing (L z ) of at most 20 mm, preferably of less than 12 mm, are arranged and consist of at least two sections, wherein a first lying on a tooth tip (5) portion has a positive or at least vertical breast angle (W B ) and a second portion in the direction of movement (3) of the clothing sloping Bevel (8), and that the distance between the tooth tip (5) and a point of contact of a vertical tangent (10) at the transition region between the first and the second portion forms a technologically effective tooth height (H t ), the ratio of more technologically Tooth height to tooth spacing is at most 1. Auflöseeinrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, daß zwischen der vertikalen Tangente (10) und dem zweiten Abschnitt ein Winkel von 3° - 60°, vorzugsweise von 30° - 50°, liegt.Opening device according to the preceding claim, characterized in that an angle of 3 ° -60 °, preferably 30 ° -50 °, is located between the vertical tangent (10) and the second section. Auflöseeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Zähne (2) an einem Gamiturdraht (1) ausgebildet sind, der auf einem Auflösewalzenkörper befestigt ist.Opening device according to one of the preceding claims, characterized in that the teeth (2) on a Gamiturdraht (1) are formed, which is fixed on a Auflösewalzenkörper. Auflöseeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Fußhöhe (HF) des Garniturdrahts kleiner als 2.5 mm ist.Opening device according to one of the preceding claims, characterized in that a foot height (H F ) of the clothing wire is less than 2.5 mm. Auflöseeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Verhältnis von technologisch wirksamer Zahnhöhe (Ht) zur Fußhöhe (HF) zwischen 0.2 und 1.5, vorzugsweise zwischen 0.7 und 1 liegt.Opening device according to one of the preceding claims, characterized in that the ratio of technologically effective tooth height (H t ) to foot height (H F ) is between 0.2 and 1.5, preferably between 0.7 and 1. Auflöseeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Brustwinkel (WB) in einem Bereich von 0°-10° liegt.Opening device according to one of the preceding claims, characterized in that the breast angle (W B ) is in a range of 0 ° -10 °. Auflösewalze für Textilmaschinen , insbesondere für Spinnmaschinen, mit einem Gamiturdraht oder Garniturring, dadurch gekennzeichnet, daß die daran angebrachte Zahnkontur nach einem der vorhergehenden Ansprüche ausgebildet ist.Opening roller for textile machines, in particular for spinning machines, with a Gamiturdraht or ring, characterized in that the attached tooth contour is formed according to one of the preceding claims. Gamiturdraht oder Gamiturring für Textilmaschinen, insbesondere für Spinnmaschinen, dadurch gekennzeichnet, daß die daran angebrachte Zahnkontur nach einem der vorhergehenden Ansprüche ausgebildet ist.Gamiturertraht or Gamiturring for textile machines, in particular for spinning machines, characterized in that the toothed contour attached thereto is formed according to one of the preceding claims.
EP05110353A 2004-11-11 2005-11-04 Fibre-opening unit having teeth with improved contour Not-in-force EP1657328B1 (en)

Applications Claiming Priority (1)

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DE102004054653A DE102004054653A1 (en) 2004-11-11 2004-11-11 Disintegrator with improved contour

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EP1657328A2 true EP1657328A2 (en) 2006-05-17
EP1657328A3 EP1657328A3 (en) 2007-05-30
EP1657328B1 EP1657328B1 (en) 2009-07-15

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EP (1) EP1657328B1 (en)
CN (1) CN1772985B (en)
DE (2) DE102004054653A1 (en)

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CN106557613A (en) * 2016-10-31 2017-04-05 中国五环工程有限公司 A kind of rake teeth method for designing based on discrete element method

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CN104120510A (en) * 2014-07-30 2014-10-29 宁波高新区利威科技有限公司 Sawtooth special for opening woven waste clothing
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Also Published As

Publication number Publication date
EP1657328B1 (en) 2009-07-15
US7313908B2 (en) 2008-01-01
DE102004054653A1 (en) 2006-05-18
CN1772985A (en) 2006-05-17
DE502005007698D1 (en) 2009-08-27
US20060186240A1 (en) 2006-08-24
CN1772985B (en) 2011-08-03
EP1657328A3 (en) 2007-05-30

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