EP3473754A1 - Card wire - Google Patents

Card wire Download PDF

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Publication number
EP3473754A1
EP3473754A1 EP17197463.7A EP17197463A EP3473754A1 EP 3473754 A1 EP3473754 A1 EP 3473754A1 EP 17197463 A EP17197463 A EP 17197463A EP 3473754 A1 EP3473754 A1 EP 3473754A1
Authority
EP
European Patent Office
Prior art keywords
tooth
wire
pitch
longitudinal direction
face
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
EP17197463.7A
Other languages
German (de)
French (fr)
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EP3473754B1 (en
Inventor
Peter HEISSEL
Stefan Lohrmann
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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 Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP17197463.7A priority Critical patent/EP3473754B1/en
Priority to BR102018014143-0A priority patent/BR102018014143B1/en
Priority to JP2018179205A priority patent/JP2019077978A/en
Priority to KR1020180123674A priority patent/KR102652089B1/en
Priority to US16/165,338 priority patent/US10988863B2/en
Priority to CN201811222115.XA priority patent/CN109695075B/en
Publication of EP3473754A1 publication Critical patent/EP3473754A1/en
Application granted granted Critical
Publication of EP3473754B1 publication Critical patent/EP3473754B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • 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
    • 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
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/26—Arrangements or disposition of carding elements
    • 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
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/465—Doffing arrangements for removing fibres using, or cooperating with, pneumatic means
    • 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 invention relates to a clothing wire for a roll of a carding machine.
  • Carding machines, carding machines or carding machines are used to open (to separate) or to align, to homogenize (in nonwoven production) and / or to parallelize the fibers of a fiber material, for example a wool, cotton or else of synthetic fibers or of a fiber mixture (in US Pat yarn).
  • the carding process can be used to produce a batt of fibrous material.
  • the batt consists of a loose composite of ordered individual fibers. From such a batt, for example, a nonwoven fabric can be produced.
  • the batt results in carding by the fibers are removed and summarized by a designated also as a tambour large Garniturwalze using a pickup.
  • the carding machine can have various clothing rollers. Each set roller is occupied with approximately radially outward teeth, teeth or points. The number and / or the size / or the density of the teeth, points or points, their shape and shape may vary.
  • the clothing rollers are usually provided with all-steel accessories. These consist of a profiled clothing wire which is wound under tension on the relevant clothing roller.
  • the clothing wire has a foot portion and a blade portion.
  • the foot portion may be rectangular or square in cross-section, for example. From the foot section of the blade section protrudes, in the use position approximately transversely to the lateral surface of the clothing roller.
  • the blade section has a sawtooth profile to form the teeth or serrations.
  • the clothing wire is wound around the outer surface of the clothing roller under longitudinal tension and the two ends are fastened to the clothing roller.
  • Dressing wires are known in many different designs.
  • For various functions of the respective clothing roller in the carding machine are also special Groups of clothing wires each having specific geometric features proposed.
  • the WO00 / 26450A1 , the WO2011 / 138322A1 and the WO2013 / 037711A1 Show clothing wires, which are particularly suitable for so-called worker rolls, doffer rollers or transfer rollers.
  • the teeth of these clothing wires are typically stamped relatively deep compared to the overall height of the clothing wire and are inclined with their tooth face relatively strongly forward towards the foot portion.
  • the tooth face is the side of the tooth that comes in direct contact with the fibers during carding.
  • the cited documents show areas of the tooth face, which are further inclined to the foot of the clothing to increase the carding effect of the clothing.
  • a region of the tooth face inclined more towards the foot of the clothing can be referred to as an undercut.
  • the WO2013 / 037711A1 Therefore proposes the development of WO00 / 26450A1 a special geometry in the course of the tooth face, in particular in the undercut before.
  • the object is achieved by a clothing wire according to claim 1.
  • the clothing wire according to the invention is particularly suitable for a pickup set, a worker's set or a transmission set.
  • the clothing wire In its longitudinal direction, the clothing wire has successive teeth which are spaced apart in the longitudinal direction at a pitch.
  • the pitch of the pitch can be advantageously measured from tooth tip to tooth tip.
  • the teeth are bounded longitudinally by a first side of a tooth face and by a second side by a tooth back.
  • the toothbrace and the tooth backs of successive teeth viewed in the height direction of the clothing wire downward, merge into one another in a tooth root.
  • the tooth face and the back of the tooth form the tooth tip at their point of intersection.
  • the tooth depth is determined by the greatest distance in the height direction of the clothing wire from the tooth tip to the tooth base.
  • the clothing wire according to the invention is characterized in that a distance, measured perpendicular to a tangent to a turning point between tooth back and tooth base, from this turning point to the opposite tooth face is greater than a quarter of the pitch. It is also advantageous if the distance is greater than the quotient of the division and 3.5 or greater than the quotient of the division and 3. As a result of the increased distance in the lower region of the tooth cutout between successive teeth, fibers in this lower region of the tooth cutout jam less frequently and the clothing sets less frequently.
  • the inflection point in the transition from the tooth back to the tooth base can be clearly determined as follows.
  • the back of the teeth, apart from local form elements such as elevations or depressions, has a tangent essentially at every point, which encloses an acute angle to the longitudinal direction.
  • the clothing wire according to the invention preferably has a pitch smaller than 3.2 mm. Particularly advantageous is a pitch smaller than 2.6 mm.
  • the clothing wire may have an angle to the longitudinal direction between 45 ° and 65 ° in the tooth face.
  • the clothing wire may have an angle to the longitudinal direction between 50 ° and 60 ° in the tooth face.
  • This angle range can be present at the tooth face in a particularly advantageous manner below a possibly present steeper tip section and below an optionally present undercut.
  • the tooth face can run straight and have a single angle value from this area. But it is also possible that the tooth face is bent and assumes different angles from this angular range in the course of the tooth face.
  • the clothing wire may be configured in the form of a circular arc in the base of the tooth.
  • a rounded tooth base is particularly advantageous, because then no edges or corners occur at which fibers easily jam.
  • the rounded tooth base merges tangentially and without kinking into the adjacent tooth back and the adjacent tooth face.
  • the radius in the tooth root of the clothing wire can be greater than one-eighth of the pitch.
  • a radius can be greater than 0.4mm.
  • the clothing wire may have a tooth back having two or more straight sections.
  • a straight portion adjacent to the tooth root may have a larger angle to the longitudinal direction of the clothing wire than another straight portion of the tooth back.
  • the straight portion adjoining the tooth base preferably transitions tangentially into the tooth base.
  • the adjoining the tooth base, straight portion of the tooth back of the clothing wire extends preferably up to a maximum of 50% of the tooth depth in the direction of the tip upwards. This ensures on the one hand, that the teeth can have the required distance in the tooth base. On the other hand, the teeth can still be performed with the required small pitch and yet with a small angle to the longitudinal direction in the tooth face or with an undercut.
  • the clothing wire may have an undercut in the tooth face.
  • the undercut is more inclined to the longitudinal direction than the subsequent lower part of the tooth face. In other words, the undercut has a smaller angle Lengthwise as the subsequent part of the tooth face.
  • the angle of the undercut is preferably between 0 ° and 40 ° to the longitudinal direction.
  • the angle of the undercut can be between 5 ° and 35 ° to the longitudinal direction.
  • FIG. 1 shows a clothing wire (1) according to the prior art.
  • a section of a clothing wire comprising 4 teeth (2).
  • the clothing wire (1) is shown in a view perpendicular to the longitudinal direction (L) and perpendicular to the height direction (H).
  • the division (3) and the tooth depth (7) are shown with arrows.
  • the pitch (3) is measured in the longitudinal direction (L), the tooth depth (7) in the height direction (H).
  • the auxiliary lines for the arrow representing the division (3) are applied to two tooth tips (8) of successive teeth (2).
  • the arrow for representing the tooth depth (7) is shown between the lowest point of a tooth base (6) and on an auxiliary line, which in turn is applied to a tooth tip (8).
  • the illustrated clothing wire (1) has an undercut (11).
  • the tooth back (5) and the tooth face (4) run straight below the undercut (11). Above the undercut (11) in the direction of the tip, the tooth back (5) and the tooth face (4) have a deviating area.
  • the clothing wire according to the invention in FIG. 2 largely corresponds to the clothing wire FIG. 1 , In Zahn ground (6), the clothing wire (1) has a distance (9) which is greater than a quarter of the pitch (3).
  • the distance (9) is measured from a turning point (10) at the transition from the tooth base (6) to the back of the tooth (5) to the opposite tooth face (4).
  • FIG. 3 a section from FIG. 2 shown enlarged.
  • FIG. 3 shows two teeth (2) of a Garniturdrahts (1) according to the invention.
  • the foot section is not completely displayed, but at the bottom of the FIG. 3 cut off.
  • the distance (9), starting from the Turning point (10) is measured at an angle of 90 ° to the tangent at the inflection point (10).
  • the tooth base (6) extends in a circular arc and merges tangentially into the tooth back (5). Starting from the turning point (10) upwards the tooth back (5) runs straight.
  • the angle of the tangent at the point of inflection (10) at which the circular arc of the tooth base (6) merges tangentially into the adjacent straight line of the tooth back (5) does not change in the entire first straight section of the tooth back (5).
  • the inflection point (10) is defined according to its definition clearly at the location shown.
  • the straight region adjoining the tooth base (6) has a larger angle (12) to the longitudinal direction (L) than the angle (13) of a straight region arranged above.
  • the angle (14) of the tooth face (4) is shown for the sake of completeness.

Abstract

Ein Garniturdraht weist in seiner Längsrichtung aufeinander folgende Zähne, die in der Längsrichtung in einer Teilung beabstandet angeordnet sind, auf. Die Zähne sind in Längsrichtung von einer ersten Seite von einer Zahnbrust und von einer zweiten Seite von einem Zahnrücken begrenzt. Die Zahnbrust und der Zahnrücken von aufeinander folgenden Zähnen gehen in der Höhenrichtung des Garniturdrahts nach unten in einem Zahngrund in einander über und bilden in der Höhenrichtung des Garniturdrahts nach oben eine Zahnspitze. Die Zahntiefe ist durch den größten Abstand in Höhenrichtung des Garniturdrahts von der Zahnspitze zum Zahngrund bestimmt. Ein Verhältnis von Teilung zu Zahntiefe ist kleiner 1,1. Der Garniturdraht ist dadurch gekennzeichnet, dass ein Abstand, gemessen senkrecht zu einer Tangente an einen Wendepunkt zwischen Zahnrücken und Zahngrund, von diesem Wendpunkt zur gegenüberliegenden Zahnbrust größer ist als ein Viertel der Teilung.A clothing wire has successive teeth in its longitudinal direction which are spaced apart in the longitudinal direction at a pitch. The teeth are bounded longitudinally by a first side of a tooth face and by a second side by a tooth back. The tooth face and the tooth back of consecutive teeth merge into each other in the height direction of the clothing wire downward in a tooth base and form a tooth tip in the height direction of the clothing wire upward. The tooth depth is determined by the greatest distance in the height direction of the clothing wire from the tooth tip to the tooth base. A ratio of pitch to tooth depth is less than 1.1. The clothing wire is characterized in that a distance, measured perpendicular to a tangent at a turning point between tooth back and tooth root, from this turning point to the opposite tooth face is greater than a quarter of the pitch.

Description

Die Erfindung betrifft einen Garniturdraht für eine Walze einer Kardiermaschine.The invention relates to a clothing wire for a roll of a carding machine.

Kardiermaschinen, Karden oder Krempeln werden dazu verwendet die Fasern eines Fasermaterials, beispielsweise einer Wolle, Baumwolle oder auch von Kunstfasern oder eines Fasergemischs zu öffnen (zu vereinzeln) bzw. auszurichten, zu homogenisieren (in der Vliesherstellung) und/oder zu parallelisieren (in der Garnherstellung). Durch den Kardiervorgang kann aus einem Fasermaterial ein Faserflor erzeugt werden. Der Faserflor besteht aus einem losen Verbund geordneter Einzelfasern. Aus einem solchen Faserflor kann beispielweise ein Vlies hergestellt werden. Der Faserflor entsteht beim Kardieren, indem die Fasern von einer auch als Tambour bezeichneten großen Garniturwalze mit Hilfe eines Abnahmemittels abgenommen und zusammengefasst werden.Carding machines, carding machines or carding machines are used to open (to separate) or to align, to homogenize (in nonwoven production) and / or to parallelize the fibers of a fiber material, for example a wool, cotton or else of synthetic fibers or of a fiber mixture (in US Pat yarn). The carding process can be used to produce a batt of fibrous material. The batt consists of a loose composite of ordered individual fibers. From such a batt, for example, a nonwoven fabric can be produced. The batt results in carding by the fibers are removed and summarized by a designated also as a tambour large Garniturwalze using a pickup.

Die Kardiermaschine kann verschiedene Garniturwalzen aufweisen. Jede Garniturwalze ist mit in etwa radial nach außen stehenden Zähnen, Zacken oder Spitzen besetzt. Die Anzahl und/oder die Crröße/oder die Dichte der Zähne, Zacken oder Spitzen, deren Form und Gestalt kann variieren.The carding machine can have various clothing rollers. Each set roller is occupied with approximately radially outward teeth, teeth or points. The number and / or the size / or the density of the teeth, points or points, their shape and shape may vary.

Die Garniturwalzen sind üblicherweise mit Ganzstahlgarnituren versehen. Diese bestehen aus einem profilierten Garniturdraht, der unter Spannung auf die betreffende Garniturwalze aufgewickelt ist. Der Garniturdraht weist einen Fußabschnitt und einen Blattabschnitt auf. Der Fußabschnitt kann im Querschnitt beispielsweise rechteckförmig oder quadratisch sein. Vom Fußabschnitt ragt der Blattabschnitt weg, in Gebrauchslage in etwa quer zur Mantelfläche der Garniturwalze. Am Blattabschnitt ist ein Sägezahnprofil zur Bildung der Zähne oder Zacken vorhanden. Der Garniturdraht wird um die Mantelfläche der Garniturwalze herum unter Längsspannung aufgewickelt und die beiden Enden werden an der Garniturwalze befestigt.The clothing rollers are usually provided with all-steel accessories. These consist of a profiled clothing wire which is wound under tension on the relevant clothing roller. The clothing wire has a foot portion and a blade portion. The foot portion may be rectangular or square in cross-section, for example. From the foot section of the blade section protrudes, in the use position approximately transversely to the lateral surface of the clothing roller. The blade section has a sawtooth profile to form the teeth or serrations. The clothing wire is wound around the outer surface of the clothing roller under longitudinal tension and the two ends are fastened to the clothing roller.

Garniturdrähte sind in vielen verschiedenen Ausführungen bekannt. Für verschiedene Funktionen der jeweiligen Garniturwalze in der Kardiermaschine werden auch spezielle Gruppen von Garniturdrähten mit jeweils spezifischen geometrischen Merkmalen vorgeschlagen.Dressing wires are known in many different designs. For various functions of the respective clothing roller in the carding machine are also special Groups of clothing wires each having specific geometric features proposed.

Die WO00/26450A1 , die WO2011/138322A1 und die WO2013/037711A1 zeigen Garniturdrähte, die besonders für sogenannte Arbeiterwalzen, Abnehmerwalzen oder Übertragungswalzen geeignet sind. Die Zähne dieser Garniturdrähte sind typischerweise im Vergleich zu Gesamthöhe des Garniturdrahts relativ tief eingestanzt und sind mit ihrer Zahnbrust relativ stark nach vorne in Richtung auf den Fußabschnitt geneigt. Die Zahnbrust ist die Seite des Zahnes, die mit den Fasern beim Kardieren in direkten Kontakt tritt. Die angegebenen Druckschriften zeigen Bereiche der Zahnbrust, die nochmals weiter zum Fuß der Garnitur geneigt sind, um die Kardierwirkung der Garnitur zu erhöhen. Ein stärker zum Fuß der Garnitur geneigter Bereich der Zahnbrust kann als Hinterschnitt bezeichnet werden. Durch einen solchen Hinterschnitt kann die Stabilität der Zähne negativ beeinflusst werden, insbesondere wenn die aufeinander abfolgenden Zähne näher zusammenrücken. Die WO2013/037711A1 schlägt deshalb zur Weiterbildung der WO00/26450A1 eine spezielle Geometrie im Verlauf der Zahnbrust, insbesondere im Hinterschnitt vor.The WO00 / 26450A1 , the WO2011 / 138322A1 and the WO2013 / 037711A1 Show clothing wires, which are particularly suitable for so-called worker rolls, doffer rollers or transfer rollers. The teeth of these clothing wires are typically stamped relatively deep compared to the overall height of the clothing wire and are inclined with their tooth face relatively strongly forward towards the foot portion. The tooth face is the side of the tooth that comes in direct contact with the fibers during carding. The cited documents show areas of the tooth face, which are further inclined to the foot of the clothing to increase the carding effect of the clothing. A region of the tooth face inclined more towards the foot of the clothing can be referred to as an undercut. By such an undercut, the stability of the teeth can be adversely affected, especially when the successive teeth closer together. The WO2013 / 037711A1 Therefore proposes the development of WO00 / 26450A1 a special geometry in the course of the tooth face, in particular in the undercut before.

Bei den Garniturdrähten in den oben angegebenen Druckschriften, aber auch bei Garniturdrähten für Arbeiterwalzen, Abnehmerwalzen oder Übertragungswalzen ohne einen Hinterschnitt, ergibt sich bei im Vergleich zur Zahntiefe kleiner Teilung der Zähne das Problem, dass sich im Zahnausschnitt in Richtung auf den Zahngrund Fasern verklemmen können und sich die Garnitur mit der Zeit zusetzt. Auch wenn im unteren Bereich des Zahnausschnitts (in der Nähe des Zahngrunds) normalerweise nicht viele Fasern gehalten werden, kann es schnell zu einer unerwünschten Ansammlung von Fasern kommen, wenn erste Fasern eingeklemmt wurden.In the clothing wires in the above-mentioned documents, but also in clothing wires for worker rolls, doffer rollers or transfer rollers without an undercut, resulting in compared to the tooth depth small pitch of the teeth, the problem that can jam in the tooth cut towards the tooth base fibers and the clothing becomes more and more over time. Although not many fibers are normally held in the lower portion of the tooth cutout (near the tooth base), unwanted accumulation of fibers can quickly occur when first fibers are pinched.

Es ist die Aufgabe dieser Erfindung einen Garniturdraht anzugeben, bei dem das Verklemmen von Fasern verringert und das Zusetzen der Garnitur reduziert wird.It is the object of this invention to provide a clothing wire in which the jamming of fibers is reduced and the clogging of the clothing is reduced.

Die Aufgabe wird durch einen Garniturdraht gemäß Anspruch 1 gelöst.The object is achieved by a clothing wire according to claim 1.

Der erfindungsgemäße Garniturdraht ist insbesondere für eine Abnehmergarnitur, eine Arbeitergarnitur oder eine Übertragungsgarnitur geeignet. In seiner Längsrichtung weist der Garniturdraht aufeinander folgende Zähne auf, die in der Längsrichtung in einer Teilung beabstandet angeordnet sind. Das Abstandsmaß der Teilung kann vorteilhaft von Zahnspitze zu Zahnspitze gemessen werden. Die Zähne sind in Längsrichtung von einer ersten Seite von einer Zahnbrust und von einer zweiten Seite von einem Zahnrücken begrenzt. Die Zahnbrust und der Zahnrücken von aufeinander folgenden Zähnen gehen, in der Höhenrichtung des Garniturdrahts nach unten betrachtet, in einem Zahngrund in einander über. In der Höhenrichtung des Garniturdrahts nach oben betrachtet bilden die Zahnbrust und der Zahnrücken an ihrem Schnittpunkt die Zahnspitze. Die Zahntiefe ist durch den größten Abstand in der Höhenrichtung des Garniturdrahts von der Zahnspitze zum Zahngrund bestimmt. Wenn ein rechnerisches Verhältnis von der Teilung zu Zahntiefe kleiner als 1,1 ist, ergeben sich im Zahnausschnitt Verhältnisse, die ein Verklemmen von Fasern im unteren Bereich des Zahnausschnitts begünstigen. Der erfindungsgemäße Garniturdraht ist dadurch gekennzeichnet, dass ein Abstand, gemessen senkrecht zu einer Tangente an einen Wendepunkt zwischen Zahnrücken und Zahngrund, von diesem Wendpunkt zur gegenüberliegenden Zahnbrust größer ist als ein Viertel der Teilung. Vorteilhaft ist es auch, wenn der Abstand größer als der Quotient aus der Teilung und 3,5 oder größer als der Quotient aus der Teilung und 3 ist. Durch den vergrößerten Abstand im unteren Bereich des Zahnausschnitts zwischen aufeinanderfolgenden Zähnen verklemmen in diesem unteren Bereich des Zahnausschnittes seltener Fasern und die Garnitur setzt sich weniger häufig zu. Durch den größeren Abstand entsteht zusätzlich der synergetische Effekt, dass die Oberfläche an der Zahnbrust bei vielen der betreffenden Garniturdrähte glatter ist. Dadurch wird das anfängliche Verklemmen von Fasern weiter verringert, weil die Fasern leichter an der Oberfläche abgleiten können. Bei den meisten der betreffenden Garniturdrähten findet bekanntermaßen zu einem späten Zeitpunkt während der Herstellung eine Bearbeitung der Oberfläche statt, die auch zu einer Glättung der Oberfläche führt. Diese Bearbeitung führt bei größerem Abstand zwischen den Zähnen zu einer besseren Glättung.The clothing wire according to the invention is particularly suitable for a pickup set, a worker's set or a transmission set. In its longitudinal direction, the clothing wire has successive teeth which are spaced apart in the longitudinal direction at a pitch. The pitch of the pitch can be advantageously measured from tooth tip to tooth tip. The teeth are bounded longitudinally by a first side of a tooth face and by a second side by a tooth back. The toothbrace and the tooth backs of successive teeth, viewed in the height direction of the clothing wire downward, merge into one another in a tooth root. When viewed in the height direction of the clothing wire, the tooth face and the back of the tooth form the tooth tip at their point of intersection. The tooth depth is determined by the greatest distance in the height direction of the clothing wire from the tooth tip to the tooth base. If a computational ratio of the pitch to tooth depth is less than 1.1, results in the tooth cut conditions that promote jamming of fibers in the lower part of the tooth cut. The clothing wire according to the invention is characterized in that a distance, measured perpendicular to a tangent to a turning point between tooth back and tooth base, from this turning point to the opposite tooth face is greater than a quarter of the pitch. It is also advantageous if the distance is greater than the quotient of the division and 3.5 or greater than the quotient of the division and 3. As a result of the increased distance in the lower region of the tooth cutout between successive teeth, fibers in this lower region of the tooth cutout jam less frequently and the clothing sets less frequently. Due to the greater distance, the synergetic effect additionally arises that the surface on the tooth face is smoother in many of the wire threads concerned. This further reduces the initial jamming of fibers because the fibers are more likely to slip off the surface. In most of the clothing wires concerned, processing of the surface, which also leads to a smoothing of the surface, is known to take place at a late point in time during production. This processing leads to a better smoothing with larger distance between the teeth.

Der Wendepunkt im Übergang vom Zahnrücken zum Zahngrund kann wie folgt eindeutig bestimmt werden. Der Zahnrücken weist abgesehen von lokalen Formelementen wie Erhöhungen oder Vertiefungen im Wesentlichen an jeder Stelle eine Tangente auf, die einen spitzen Winkel zur Längsrichtung einschließt. Im Zahngrund gibt es mindestens eine Stelle, an der die Tangente an den Garniturdraht in Längsrichtung verläuft. Ausgehend von dieser Stelle mit einer Tangente in Längsrichtung zum Zahnrücken liegt der Wendepunkt an der ersten Stelle, an der der Winkel der Tangente an dieser Stelle im Vergleich zum nächstliegenden vorherigen Punkt einen kleineren oder gleich großen Winkel zur Längsrichtung annimmt.The inflection point in the transition from the tooth back to the tooth base can be clearly determined as follows. The back of the teeth, apart from local form elements such as elevations or depressions, has a tangent essentially at every point, which encloses an acute angle to the longitudinal direction. There is at least one point in the tooth base where the tangent to the clothing wire runs lengthwise. Starting from this point with a longitudinal tangent to the back of the tooth, the inflection point is at the first point where the angle of the tangent at that point assumes a smaller or equal angle to the longitudinal direction compared to the nearest previous point.

Der erfindungsgemäße Garniturdraht weist vorzugsweise eine Teilung kleiner als 3,2mm auf. Besonders vorteilhaft liegt eine Teilung kleiner 2,6mm vor.The clothing wire according to the invention preferably has a pitch smaller than 3.2 mm. Particularly advantageous is a pitch smaller than 2.6 mm.

Der Garniturdraht kann in der Zahnbrust einen Winkel zur Längsrichtung zwischen 45° und 65° aufweisen. Der Garniturdraht kann in der Zahnbrust einen Winkel zur Längsrichtung zwischen 50° und 60° aufweisen. Dieser Winkelbereich kann an der Zahnbrust besonders vorteilhaft unterhalb eines eventuell vorliegenden steileren Spitzenabschnitts und unterhalb eines eventuell vorliegenden Hinterschnitts vorliegen. Die Zahnbrust kann dabei gerade verlaufen und einen einzigen Winkelwert aus diesem Bereich aufweisen. Es ist aber auch möglich, dass die Zahnbrust gebogen verläuft und im Verlauf der Zahnbrust verschiedene Winkel aus diesem Winkelbereich annimmt.The clothing wire may have an angle to the longitudinal direction between 45 ° and 65 ° in the tooth face. The clothing wire may have an angle to the longitudinal direction between 50 ° and 60 ° in the tooth face. This angle range can be present at the tooth face in a particularly advantageous manner below a possibly present steeper tip section and below an optionally present undercut. The tooth face can run straight and have a single angle value from this area. But it is also possible that the tooth face is bent and assumes different angles from this angular range in the course of the tooth face.

Der Garniturdraht kann im Zahngrund kreisbogenförmig ausgestaltet sein. Ein gerundet verlaufender Zahngrund ist besonders vorteilhaft, weil dann keine Kanten oder Ecken auftreten, an denen Fasern leichter verklemmen. Vorteilhafterweise geht der gerundete Zahngrund tangential und ohne Knick in den angrenzenden Zahnrücken und die angrenzende Zahnbrust über.The clothing wire may be configured in the form of a circular arc in the base of the tooth. A rounded tooth base is particularly advantageous, because then no edges or corners occur at which fibers easily jam. Advantageously, the rounded tooth base merges tangentially and without kinking into the adjacent tooth back and the adjacent tooth face.

Der Radius im Zahngrund des Garniturdrahts kann größer als ein Achtel der Teilung sein. Besonders vorteilhaft kann ein Radius größer als 0,4mm sein. Vorteilhaft ist auch ein Radius größer als ein Siebtel oder ein Sechstel der Teilung.The radius in the tooth root of the clothing wire can be greater than one-eighth of the pitch. Particularly advantageously, a radius can be greater than 0.4mm. Advantageously, a radius greater than one-seventh or one-sixth of the pitch.

Der Garniturdraht kann einen Zahnrücken mit zwei oder mehr geraden Abschnitten aufweisen. Ein gerader Abschnitt, der an den Zahngrund angrenzt, kann einen größeren Winkel zur Längsrichtung des Garniturdrahts aufweisen, als ein anderer gerader Abschnitt des Zahnrückens. Der an den Zahngrund angrenzende gerade Abschnitt geht vorzugsweise tangential in den Zahngrund über. Der an den Zahngrund angrenzende, gerade Abschnitt des Zahnrückens des Garniturdrahts reicht vorzugsweise bis maximal 50% der Zahntiefe in Richtung auf die Spitze nach oben. Dadurch wird zum Einen sichergestellt, dass die Zähne den erforderlichen Abstand im Zahngrund aufweisen können. Zum Anderen können die Zähne dadurch aber dennoch mit der erforderlichen kleinen Teilung und doch mit einem kleinen Winkel zur Längsrichtung in der Zahnbrust oder mit einem Hinterschnitt ausgeführt werden.The clothing wire may have a tooth back having two or more straight sections. A straight portion adjacent to the tooth root may have a larger angle to the longitudinal direction of the clothing wire than another straight portion of the tooth back. The straight portion adjoining the tooth base preferably transitions tangentially into the tooth base. The adjoining the tooth base, straight portion of the tooth back of the clothing wire extends preferably up to a maximum of 50% of the tooth depth in the direction of the tip upwards. This ensures on the one hand, that the teeth can have the required distance in the tooth base. On the other hand, the teeth can still be performed with the required small pitch and yet with a small angle to the longitudinal direction in the tooth face or with an undercut.

Der Garniturdraht kann einen Hinterschnitt in der Zahnbrust aufweisen. Der Hinterschnitt ist stärker zur Längsrichtung geneigt als der unten anschließende Teil der Zahnbrust. In anderen Worten weist der Hinterschnitt einen kleineren Winkel zur Längsrichtung auf als der anschließende Teil der Zahnbrust. Der Winkel des Hinterschnitts beträgt vorzugsweise zwischen 0° und 40° zur Längsrichtung. Der Winkel des Hinterschnitts kann zwischen 5° und 35° zur Längsrichtung betragen.The clothing wire may have an undercut in the tooth face. The undercut is more inclined to the longitudinal direction than the subsequent lower part of the tooth face. In other words, the undercut has a smaller angle Lengthwise as the subsequent part of the tooth face. The angle of the undercut is preferably between 0 ° and 40 ° to the longitudinal direction. The angle of the undercut can be between 5 ° and 35 ° to the longitudinal direction.

Der Fußabschnitt kann für den erfindungsgemäßen Garniturdraht nach der jeweiligen genauen Anwendung frei ausgewählt werden. Es können zum Beispiel prismen- oder v-förmige verkettete oder einfache rechteckförmige Fußformen am Garniturdraht vorliegen.

Fig. 1
Figur 1 zeigt einen Garniturdraht nach dem Stand der Technik
Fig. 2
Figur 2 zeigt ein Ausführungsbeispiel eines erfindungsgemäßen Garniturdrahts
Fig. 3
Figur 3 zeigt einen vergrößerten Ausschnitt aus Figur 2
The foot section can be freely selected for the clothing wire according to the invention for the specific application. For example, prismatic or V-shaped chained or simple rectangular foot shapes may be present on the clothing wire.
Fig. 1
FIG. 1 shows a clothing wire according to the prior art
Fig. 2
FIG. 2 shows an embodiment of a Garniturdrahts invention
Fig. 3
FIG. 3 shows an enlarged section FIG. 2

Figur 1 zeigt einen Garniturdraht (1) nach dem Stand der Technik. Es ist ein Abschnitt eines Garniturdrahtes gezeigt, der 4 Zähne (2) umfasst. Der Garniturdraht (1) ist in einer Ansicht senkrecht zur Längsrichtung (L) und senkrecht zur Höhenrichtung (H) dargestellt. Die Teilung (3) und die Zahntiefe (7) sind mit Pfeilen dargestellt. Die Teilung (3) wird in Längsrichtung (L), die Zahntiefe (7) in Höhenrichtung (H) gemessen. Die Hilfslinien für den Pfeil zur Darstellung der Teilung (3) sind an zwei Zahnspitzen (8) von aufeinanderfolgenden Zähnen (2) angelegt. Der Pfeil zur Darstellung der Zahntiefe (7) ist zwischen der tiefsten Stelle eines Zahngrunds (6) und an einer Hilfslinie, die wiederum an einer Zahnspitze (8) angelegt ist, dargestellt. Der dargestellte Garniturdraht (1) weist einen Hinterschnitt (11) auf. Der Zahnrücken (5) und die Zahnbrust (4) verlaufen unterhalb des Hinterschnitts (11) gerade. Oberhalb des Hinterschnitts (11) in Richtung zur Spitze weisen der Zahnrücken (5) und die Zahnbrust (4) einen abweichend verlaufenden Bereich auf. FIG. 1 shows a clothing wire (1) according to the prior art. There is shown a section of a clothing wire comprising 4 teeth (2). The clothing wire (1) is shown in a view perpendicular to the longitudinal direction (L) and perpendicular to the height direction (H). The division (3) and the tooth depth (7) are shown with arrows. The pitch (3) is measured in the longitudinal direction (L), the tooth depth (7) in the height direction (H). The auxiliary lines for the arrow representing the division (3) are applied to two tooth tips (8) of successive teeth (2). The arrow for representing the tooth depth (7) is shown between the lowest point of a tooth base (6) and on an auxiliary line, which in turn is applied to a tooth tip (8). The illustrated clothing wire (1) has an undercut (11). The tooth back (5) and the tooth face (4) run straight below the undercut (11). Above the undercut (11) in the direction of the tip, the tooth back (5) and the tooth face (4) have a deviating area.

Der erfindungsgemäße Garniturdraht in Figur 2 entspricht zu großen Teilen dem Garniturdraht aus Figur 1. Im Zahngrund (6) weist der Garniturdraht (1) einen Abstand (9) auf, der größer ist als ein Viertel der Teilung (3). Der Abstand (9) wird gemessen von einem Wendepunkt (10) am Übergang vom Zahngrund (6) zum Zahnrücken (5) zur gegenüberliegenden Zahnbrust(4). Zur besseren Übersicht ist in Figur 3 ein Ausschnitt aus Figur 2 vergrößert dargestellt.The clothing wire according to the invention in FIG. 2 largely corresponds to the clothing wire FIG. 1 , In Zahngrund (6), the clothing wire (1) has a distance (9) which is greater than a quarter of the pitch (3). The distance (9) is measured from a turning point (10) at the transition from the tooth base (6) to the back of the tooth (5) to the opposite tooth face (4). For a better overview, see FIG. 3 a section from FIG. 2 shown enlarged.

Figur 3 zeigt zwei Zähne (2) eines erfindungsgemäßen Garniturdrahts (1). Der Fußabschnitt ist nicht mehr vollständig abgebildet, sondern am unteren Rand der Figur 3 abgeschnitten. Insbesondere ist zu erkennen, dass der Abstand (9) ausgehend vom Wendepunkt (10) unter einem Winkel von 90° zur Tangente am Wendepunkt (10) gemessen wird. Der Zahngrund (6) verläuft kreisbogenförmig und geht tangential in den Zahnrücken (5) über. Ausgehend vom Wendepunkt (10) nach oben verläuft der Zahnrücken (5) gerade. Der Winkel der Tangente am Wendepunkt (10), an dem der Kreisbogen des Zahngrunds (6) tangential in die angrenzende Gerade des Zahnrückens (5) übergeht, ändert sich im gesamten ersten geraden Abschnitt des Zahnrückens (5) nicht. Dadurch ist der Wendepunkt (10) gemäß seiner Definition eindeutig an der gezeigten Stelle festgelegt. Der an den Zahngrund (6) angrenzende gerade Bereich hat einen größeren Winkel (12) zur Längsrichtung (L) als der Winkel (13) eines weiter oben angeordneten geraden Bereichs. Der Winkel (14) der Zahnbrust (4) ist der Vollständigkeit halber dargestellt. Bezugszeichenliste 1 Garniturdraht 2 Zahn 3 Teilung 4 Zahnbrust 5 Zahnrücken 6 Zahngrund 7 Zahntiefe 8 Zahnspitze 9 Abstand 10 Wendepunkt 11 Hinterschnitt 12 Winkel des an den Zahngrund angrenzenden geraden Abschnitts des Zahnrückens 13 Winkel eines weiteren geraden Abschnitts 14 Winkel der Zahnbrust L Längsrichtung des Garniturdrahts H Höhenrichtung des Garniturdrahts FIG. 3 shows two teeth (2) of a Garniturdrahts (1) according to the invention. The foot section is not completely displayed, but at the bottom of the FIG. 3 cut off. In particular, it can be seen that the distance (9), starting from the Turning point (10) is measured at an angle of 90 ° to the tangent at the inflection point (10). The tooth base (6) extends in a circular arc and merges tangentially into the tooth back (5). Starting from the turning point (10) upwards the tooth back (5) runs straight. The angle of the tangent at the point of inflection (10) at which the circular arc of the tooth base (6) merges tangentially into the adjacent straight line of the tooth back (5) does not change in the entire first straight section of the tooth back (5). As a result, the inflection point (10) is defined according to its definition clearly at the location shown. The straight region adjoining the tooth base (6) has a larger angle (12) to the longitudinal direction (L) than the angle (13) of a straight region arranged above. The angle (14) of the tooth face (4) is shown for the sake of completeness. LIST OF REFERENCE NUMBERS 1 clothing wire 2 tooth 3 division 4 tooth face 5 tooth back 6 tooth root 7 tooth depth 8th tooth tip 9 distance 10 turning point 11 undercut 12 Angle of the straight portion of the tooth back adjacent to the tooth base 13 Angle of another straight section 14 Angle of the tooth face L Longitudinal direction of the clothing wire H Height direction of the clothing wire

Claims (9)

Garniturdraht (1) insbesondere für eine Abnehmergarnitur, eine Arbeitergarnitur oder eine Übertragungsgarnitur, der in seiner Längsrichtung (L) aufeinander folgende Zähne (2), die in der Längsrichtung (L) in einer Teilung (3) beabstandet angeordnet sind, aufweist,
wobei die Zähne (2) in Längsrichtung (L) von einer ersten Seite von einer Zahnbrust (4) und von einer zweiten Seite von einem Zahnrücken (5) begrenzt sind,
wobei die Zahnbrust (4) und der Zahnrücken (5) von aufeinander folgenden Zähnen (2) in der Höhenrichtung (H) des Garniturdrahts (1) nach unten in einem Zahngrund (6) in einander übergehen und in der Höhenrichtung (H) des Garniturdrahts (1) nach oben eine Zahnspitze (8) bilden,
wobei die Zahntiefe (7) durch den größten Abstand in Höhenrichtung (H) des Garniturdrahts (1) von der Zahnspitze (8) zum Zahngrund (6) bestimmt ist,
wobei ein Verhältnis von Teilung (3) zu Zahntiefe (7) kleiner 1,1 ist,
dadurch gekennzeichnet, dass
ein Abstand (9), gemessen senkrecht zu einer Tangente an einen Wendepunkt (10) zwischen Zahnrücken (5) und Zahngrund (6), von diesem Wendpunkt (10) zur gegenüberliegenden Zahnbrust (4) größer ist als ein Viertel der Teilung (3).Fitting wire (1) in particular for a pickup assembly, a worker's set or a transfer set, which in its longitudinal direction (L) successive teeth (2) which are arranged in the longitudinal direction (L) in a pitch (3) spaced apart,
wherein the teeth (2) are delimited in the longitudinal direction (L) by a first side of a tooth face (4) and by a second side by a tooth back (5),
wherein the tooth face (4) and the tooth back (5) of successive teeth (2) in the height direction (H) of the Garniturdrahts (1) down in a tooth base (6) into each other and in the height direction (H) of the Garniturdrahts (1) forming a tooth tip (8) upwards,
wherein the tooth depth (7) is determined by the greatest distance in the height direction (H) of the clothing wire (1) from the tooth tip (8) to the tooth base (6),
wherein a ratio of pitch (3) to tooth depth (7) is less than 1.1,
characterized in that
a distance (9), measured perpendicular to a tangent to a point of inflection (10) between tooth back (5) and tooth base (6), from this inflection point (10) to the opposite tooth face (4) is greater than a quarter of the pitch (3) , Garniturdraht (1) nach Anspruch 1
dadurch gekennzeichnet, dass
die Teilung (3) kleiner 3,2mm ist.Dressing wire (1) according to claim 1
characterized in that
the pitch (3) is less than 3.2mm. Garniturdraht (1) nach einem der vorhergehenden Ansprüche
dadurch gekennzeichnet, dass
der Winkel der Zahnbrust (4) zur Längsrichtung (L) zwischen 45° und 65° beträgt.Dressing wire (1) according to one of the preceding claims
characterized in that
the angle of the tooth face (4) to the longitudinal direction (L) is between 45 ° and 65 °. Garniturdraht (1) nach einem der vorhergehenden Ansprüche
dadurch gekennzeichnet, dass
der Zahngrund (6) kreisbogenförmig ausgeformt ist.Dressing wire (1) according to one of the preceding claims
characterized in that
the tooth base (6) is formed in a circular arc. Garniturdraht (1) nach dem vorhergehenden Anspruch
dadurch gekennzeichnet, dass
der Zahngrund (6) einen Radius größer als ein Achtel der Teilung (3) und/oder größer als 0,4mm, aufweist.Dressing wire (1) according to the preceding claim
characterized in that
the tooth base (6) has a radius greater than one-eighth of the pitch (3) and / or greater than 0.4 mm. Garniturdraht (1) nach einem der vorhergehenden Ansprüche
dadurch gekennzeichnet, dass
der Zahnrücken (5) mindestens zwei gerade Abschnitte umfasst, wobei ein gerader Abschnitt, der an den Zahngrund (6) angrenzt, einen größeren Winkel zur Längsrichtung (L) aufweist als ein anderer gerader Abschnitt.Dressing wire (1) according to one of the preceding claims
characterized in that
the tooth back (5) comprises at least two straight sections, wherein a straight section adjacent to the tooth base (6) has a greater angle to the longitudinal direction (L) than another straight section. Garniturdraht (1) nach dem vorhergehenden Anspruch
dadurch gekennzeichnet, dass
der an den Zahngrund (6) angrenzende gerade Abschnitt bis maximal 50% der Zahntiefe (7) reicht.Dressing wire (1) according to the preceding claim
characterized in that
the on the tooth base (6) adjacent straight section to a maximum of 50% of the tooth depth (7) ranges. Garniturdraht (1) nach einem der vorhergehenden Ansprüche
dadurch gekennzeichnet, dass
ein Hinterschnitt (11) in der Zahnbrust (4) vorliegt.Dressing wire (1) according to one of the preceding claims
characterized in that
an undercut (11) in the tooth face (4) is present. Garniturdraht (1) nach Anspruch 8
dadurch gekennzeichnet, dass
der Hinterschnitt (11) in der Zahnbrust (4) einen Winkel von 0° bis 45° zur Längsrichtung (L) aufweist.Fitting wire (1) according to claim 8
characterized in that
the undercut (11) in the tooth face (4) has an angle of 0 ° to 45 ° to the longitudinal direction (L).
EP17197463.7A 2017-10-20 2017-10-20 Card wire Active EP3473754B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP17197463.7A EP3473754B1 (en) 2017-10-20 2017-10-20 Card wire
BR102018014143-0A BR102018014143B1 (en) 2017-10-20 2018-07-11 CARD WIRE
JP2018179205A JP2019077978A (en) 2017-10-20 2018-09-25 Card wire
KR1020180123674A KR102652089B1 (en) 2017-10-20 2018-10-17 Card wire
US16/165,338 US10988863B2 (en) 2017-10-20 2018-10-19 Card wire
CN201811222115.XA CN109695075B (en) 2017-10-20 2018-10-19 Comb needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17197463.7A EP3473754B1 (en) 2017-10-20 2017-10-20 Card wire

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EP3473754A1 true EP3473754A1 (en) 2019-04-24
EP3473754B1 EP3473754B1 (en) 2021-05-19

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US (1) US10988863B2 (en)
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JP (1) JP2019077978A (en)
KR (1) KR102652089B1 (en)
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Citations (5)

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Publication number Priority date Publication date Assignee Title
DE19509743A1 (en) * 1995-03-17 1996-09-19 Fritz Stahlecker Toothed clothing for open end spinner fibre loosening roller
WO2000026450A1 (en) 1998-10-30 2000-05-11 Commonwealth Scientific And Industrial Research Organisation Card wire, especially for doffers and workers
WO2011138322A1 (en) 2010-05-04 2011-11-10 Nv Bekaert Sa Wire profile for card clothing
EP2489766A2 (en) * 2011-02-18 2012-08-22 Graf + Cie AG All steel trimming
WO2013037711A1 (en) 2011-09-15 2013-03-21 Nv Bekaert Sa Card wire with improved tooth shape

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ES288973Y (en) * 1984-10-11 1987-02-01 Sole Leris Roger PERFECTED RIGID GARNISH FOR BUTTONS FOR CARDS.
US5755012A (en) * 1996-03-05 1998-05-26 Hollingsworth; John D. Metallic clothing for carding segments and flats
EP1099783B1 (en) * 1999-11-10 2003-07-30 Graf + Cie Ag Saw-toothed wire
EP2808429B1 (en) * 2013-05-27 2017-06-28 Groz-Beckert KG Wire for a roller of a carding machine
CN103498215A (en) * 2013-09-29 2014-01-08 无锡众望四维科技有限公司 Metal card clothing of carding machine
WO2015110304A1 (en) * 2014-01-23 2015-07-30 Groz-Beckert Kommanditgesellschaft Card wire
DE102014107079B3 (en) * 2014-04-07 2015-06-18 TRüTZSCHLER GMBH & CO. KG All-steel set for a card

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509743A1 (en) * 1995-03-17 1996-09-19 Fritz Stahlecker Toothed clothing for open end spinner fibre loosening roller
WO2000026450A1 (en) 1998-10-30 2000-05-11 Commonwealth Scientific And Industrial Research Organisation Card wire, especially for doffers and workers
WO2011138322A1 (en) 2010-05-04 2011-11-10 Nv Bekaert Sa Wire profile for card clothing
EP2489766A2 (en) * 2011-02-18 2012-08-22 Graf + Cie AG All steel trimming
WO2013037711A1 (en) 2011-09-15 2013-03-21 Nv Bekaert Sa Card wire with improved tooth shape

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BR102018014143A2 (en) 2019-05-07
JP2019077978A (en) 2019-05-23
US20190119832A1 (en) 2019-04-25
KR102652089B1 (en) 2024-03-29
US10988863B2 (en) 2021-04-27
CN109695075A (en) 2019-04-30
EP3473754B1 (en) 2021-05-19
CN109695075B (en) 2023-02-17
KR20190044514A (en) 2019-04-30

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