EP1740745B1 - Spring mechanism for a flex bow - Google Patents

Spring mechanism for a flex bow Download PDF

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Publication number
EP1740745B1
EP1740745B1 EP05714749A EP05714749A EP1740745B1 EP 1740745 B1 EP1740745 B1 EP 1740745B1 EP 05714749 A EP05714749 A EP 05714749A EP 05714749 A EP05714749 A EP 05714749A EP 1740745 B1 EP1740745 B1 EP 1740745B1
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EP
European Patent Office
Prior art keywords
flexible bend
flexible
spring mechanism
spring
bend
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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.)
Not-in-force
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EP05714749A
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German (de)
French (fr)
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EP1740745A1 (en
Inventor
Emil Medvetchi
Roland Styner
Willi Sigg
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP1740745A1 publication Critical patent/EP1740745A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • 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
    • D01G15/28—Supporting arrangements for carding elements; Arrangements for adjusting relative positions of carding elements
    • D01G15/30—Bends

Definitions

  • the present invention relates to a spring device for a flexible bow of a revolving flat card.
  • the lid area together with the drum, forms the main carding zone and has as function the dissolution of the flakes into single fibers, removal of impurities and dust, elimination of very short fibers, the dissolution of nits and the parallelization of the fibers. Since the covers are added by dirt and fibers, it is necessary to clean them. Therefore, the revolving lid was developed with the lids held together by means of a chain or belt together to form an endless circulating band. One part is in direct use opposite the clothing of the drum and the remaining part is transported via deflection rollers in the supine position and can be cleaned and eventually sanded.
  • the covers slide into the working position, when the sets of drum and lid are arranged opposite each other, on arcuate strips, the u.
  • the carding nip is called.
  • the settings of the carding nip are in the range of 0.10 mm to 0.30 mm for cotton or up to 0.40 mm for manmade fibers in the case of a revolving flat card for the cotton spinning mill. Therefore, the precision of the revolving-flat elements, in particular of the flexible bend as such, and the adjustment of these elements to each other of very great importance. However, depending on the type of clothing selected, it may be necessary to have different initial settings of the flexible sheet in the range of up to 3 mm.
  • the range of settings requires that the elastic properties of the flexible bend allow this bending without reaching the plastic area.
  • the flexible sheets are usually cast from a special alloy, which has the necessary elasticity and can give way to the necessary shape.
  • the elastic range and the associated maximum deflection is not always sufficient for the desired adjustment bandwidth. This effect becomes even more severe with a smaller drum diameter of, for example, 1 m or less, since the same bending change increases the effective deflection.
  • it is advantageous that the sheet is freely movable at its end, both in the radial adjustment direction and in the circumferential direction. Possible fixations may obstruct or restrict the movement in the circumferential direction.
  • both radial adjustment directions are desired: for the enlargement of the carding gap, in the radial direction away from the center and for the reduction of the carding gap, in the radial direction in the direction of the center.
  • the flexible bend must be made to the smallest radius and can only be used for an increase in the radius. This limits the setting area. Overstretching the arch beyond the yield point can cause the arch to deform plastically and not return to its original state.
  • the invention is therefore based on the object to provide a device of the type described input, which avoids the disadvantages mentioned.
  • the elastic properties of the bow can be supported.
  • the spring force of the device is arranged such that the arc of the elastic region of the flexible bend is supported in at least one radial direction. In this way, a greater adjustment bandwidth can be achieved, preferably in the radial direction of the arc, which was hitherto covered only by the elastic region of the arc.
  • the spring device according to the invention was aligned in the direction of the center. A flexible bow with a spring device arranged in such a way, no longer needs to be made to the smallest radius, but can also be made to an average sheet setting. For the settings away from the center press the bearing surfaces of the Adjustment means the bow away, because for a reduction of the radius, the spring device of the arch takes over this function.
  • FIG. 1 shows a Wanderdeckelkarde, z.
  • the Rieter C60 card with a working width of 1.5 meters and a drum diameter of 1 meter. Fiber flakes are transported through transport channels (not shown) through the various cleaning process steps and finally fed into the cleaner shaft 9 of the card. Instead of a cleaners well, a normal hopper can be provided. This then passes the fiber flakes to the card as cotton wool.
  • the feed device feeds the fiber flakes to the lickerins 3.
  • the lickerins 3 open the fiber flakes and remove some of the dirt particles.
  • the last licker-in roller passes the fibers to the card drum 1.
  • the card drum 1 cooperates with the lids 6, thereby further parallelizing the fibers.
  • the lids are cleaned by a lid cleaning 8 and possibly reground by means of a grinding device. After the fibers have partly carried out several revolutions on the card drum, they are removed from the doffer roller 4 of the card drum, fed to the take-off rollers in the take-off area 5 and finally stored as a card sliver in a can in a pot (not shown).
  • the covers belong to a system of the revolving lid 2, thereby cover 6 are moved by means of an endless belt or a chain by means of a drive on the drum surface, usually against the direction of rotation of the drum.
  • the lids have at their ends Deckelendköpfe that slide directly or indirectly on the Flexibelbögen 7.
  • the underside of the covers are provided with a set, for example with sawtooth or flexible sets in the form of check mark.
  • the drum also has a set, the so-called SAge leopardgarnitur.
  • a towing lid set consists of around 70 -120 lids, of which only a part are in working position. The number of lids in working position depends inter alia on the diameter of the drum and on the convertible lid arrangement. On average, 20 to 46 lids are in working position.
  • Between the clothing of the drum and the lid is a gap called the carding nip.
  • This carding nip is normally set at a constant distance over the entire contact zone between the lid and the drum. However, the gap can also ⁇ ffnend - the carding gap is steadily larger - or closing - the carding gap is steadily smaller - to be set.
  • slits can be placed in the side of the arch, and gauges can be used to measure the distance between the lid and drum area.
  • FIG. 2 shows a first example of an inventive spring device for a flexible sheet 7.
  • the flexible sheet has in the middle means for adjusting 11, which are fixed to the sheet.
  • the adjustment points 10 at the outer ends of the sheets have only assigned means for adjusting, which have a support surface for the sheet.
  • these means can be set the bow only by pressing radially upwards, away from the center of the radius.
  • the adjustment to a smaller radius can take place without the spring device only by the elastic properties in a limited adjustment range, provided that the arc has been made to the smallest desired radius.
  • a spring device in the form of a leaf spring 12 is arranged under the bow, such that the spring force deforms the flexible bend in the radial direction to the center.
  • This spring device supports the radial adjustment in the direction of the center or completely takes over from the bow.
  • the spring is designed so that its force corresponds to the smallest desired radius.
  • the means for adjusting 10 and 11 For a radial movement away from the center operate the means for adjusting 10 and 11, the means exert only a pressure movement at the outer end of the sheet.
  • the way to the center works either mainly the elastic region of the flexible bend and / or the spring device 12.
  • the spring force of the leaf spring work in this example, especially at certain points directly to the ends of the bow, and are preferably above the bearing surface of the adjusting means 10 attached.
  • the spring is mounted in the center in such a way that it can not make any movement in the circumferential direction or in the radial direction independently of the adjusting means 11.
  • FIG. 3 shows a comparable example like FIG. 2 wherein the arc and the adjusting means are comparable to FIG. 2 , Individual springs 13 together form the spring device, which also exerts a selective spring force on the outer adjustment points 10. With a radial adjustment in the direction of the center, the individual springs pull the bow with.
  • FIG. 4 again shows a bow 7 and adjusting means 10,11, as under FIG. 2 described.
  • the spring device is now arranged such that a punctual distribution of forces does not result, but in such a way that the distribution of forces is uniformly distributed as a line load over the circumference of the arc in the circumferential direction.
  • This can be achieved, for example, by attaching a second material 14, on the side of the sheets 7, to support the elastic properties in the desired radial direction. See also the cross section in FIG. 4a ,

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Details Of Indoor Wiring (AREA)
  • Adjustable Resistors (AREA)

Description

Die vorliegende Erfindung bezieht sich auf eine Federvorrichtung für einen Flexibelbogen einer Wanderdeckelkarde.The present invention relates to a spring device for a flexible bow of a revolving flat card.

Der Deckelbereich bildet zusammen mit der Trommel die Hauptkardierzone und hat als Funktion die Auflösung der Flocken zu Einzelfasern, Ausscheidung von Unreinigkeiten und Staub, Eliminierung von sehr kurzen Fasern, die Auflösung von Nissen und die Parallelisierung der Fasern. Da die Deckel durch Schmutz und Fasern zugesetzt werden, ist es notwendig, diese zu reinigen. Daher wurde der Wanderdeckel entwickelt, wobei die Deckel mittels einer Kette oder Riemen zusammen gehalten werden zu einem endlosen, umlaufenden Band zusammengefasst. Ein Teil steht in direktem Einsatz gegenüber der Garnitur der Trommel und der restliche Teil wird via Umlenkrollen in Rückenlage weitertransportiert und kann gereinigt und eventuell geschliffen werden.The lid area, together with the drum, forms the main carding zone and has as function the dissolution of the flakes into single fibers, removal of impurities and dust, elimination of very short fibers, the dissolution of nits and the parallelization of the fibers. Since the covers are added by dirt and fibers, it is necessary to clean them. Therefore, the revolving lid was developed with the lids held together by means of a chain or belt together to form an endless circulating band. One part is in direct use opposite the clothing of the drum and the remaining part is transported via deflection rollers in the supine position and can be cleaned and eventually sanded.

Die Deckel gleiten in die Arbeitsposition, wenn die Garnituren der Trommel und Deckel gegenüber einander angeordnet sind, auf bogenförmige Leisten, die u. A. Regulierbögen, Flex-Bögen, Flexibelbögen oder Gleitbögen genannt werden. Diese Flexibelbögen stehen ungefähr konzentrisch zur Trommel, jede Seite der Trommel einer, und sind an den Seitenstücken oder Trommelschilder der Karde befestigt, und zwar so, dass sie leicht und sicher nachgestellt werden können. Da mit dem Abschleifen und Abnutzen der Garnituren der Kardierspalt sich ändert, müssen die Flexibelbögen ebenfalls nachgestellt werden können.The covers slide into the working position, when the sets of drum and lid are arranged opposite each other, on arcuate strips, the u. A. Regulierbögen, flex bows, flexible bends or bends are called. These flexures are approximately concentric with the drum, either side of the drum, and are attached to the side pieces or drum labels of the card in a manner that makes them easy and safe to adjust. Since the carding gap changes with the grinding and wearing of the sets, the flexible sheets must also be able to be readjusted.

Für die Einstellung der Deckel sind im Laufe der Zeit verschiedene Deckeleinstellungs-Systeme entwickelt worden. Die älteste Bauart ist eine Dreipunkt-Regulierung, wie beschrieben in Johannsen, Handbuch der Baumwollspinnerei (Band II, 1963, Seite 50ff), wobei der Bogen an drei Punkten durch Tragsupporte gestützt wird. Durch die Einstellung zum oder weg vom Trommelmittelpunkt kann der Radius geändert werden. Dies setzt aber voraus, dass sich die Bogenenden auf ihre Stützpunkte vorschieben müssen. Zu diesem Zweck hat der Bogen an diesen Stützpunkte Schlitze, durch die Einstellmittel hindurchgehen; stellt man den Bogen enger, so nimmt der Radius ab, und das Bogenende schiebt sich vor, am Schluss wird diese Position fixiert. Dieser Grundsatz ist weiter entwickelt worden in Fünfpunkt-Regulierungen, vor allem damit das Gewicht der Deckel besser über die Stützpunkte verteilt und die Durchbiegung der Bögen verhindert werden kann. Diese Regulierung arbeitet mit einem fixierten Scheitelpunkt, die nur in Richtung des Radius geändert werden kann, nach der Seite aber nicht ausweichen kann. Die End- und Zwischenpunkte können in beiden Richtungen nachgeben. Ein Beispiel eine neuere Fünfpunkt-Regulierung ist u. A. in EP 787 841 beschrieben.For the adjustment of the lid various lid adjustment systems have been developed over time. The oldest type is a three-point regulation, as described in Johannsen, Handbuch der Baumwollspinnerei (Volume II, 1963, page 50ff), whereby the sheet is supported at three points by support charges. Adjusting to or away from the center of the drum can change the radius. This requires, however, that the bow ends must advance to their bases. For this purpose, the bow has this Support points slots through which adjustment means pass; If you make the bow narrower, the radius decreases, and the end of the bow pushes forward, at the end this position is fixed. This principle has been further developed in five-point regulations, especially so that the weight of the lid can be better distributed over the support points and the deflection of the bows can be prevented. This regulation works with a fixed vertex that can only be changed in the direction of the radius, but can not escape to the side. The final and intermediate points can yield in both directions. An example of a newer five-point regulation is u. A. in EP 787 841 described.

Zwischen der Garnitur der Deckel und die der Trommel - in direkter Arbeitsposition - formt sich einen sehr engen Spalt, der Kardierspalt genannt wird. Die Einstellungen des Kardierspalts bewegen sich bei einer Wanderdeckelkarde für die Baumwollspinnerei im Bereich von 0.10 mm bis 0.30 mm für Baumwolle oder bis 0.40 mm für Chemiefasern. Daher ist die Präzision von den Wanderdeckel-Elementen, insbesondere von dem Flexibelbogen als solches, und die Einstellung dieser Elemente gegenüber einander von sehr grosser Bedeutung. Allerdings kann es in Abhängigkeit von den gewählten Garniturtypen notwendig sein, unterschiedliche Anfangseinstellungen des Flexibelbogens im Bereich von bis zu 3 mm vor zu sehen.Between the clothing of the lid and the drum - in direct working position - forms a very narrow gap, the carding nip is called. The settings of the carding nip are in the range of 0.10 mm to 0.30 mm for cotton or up to 0.40 mm for manmade fibers in the case of a revolving flat card for the cotton spinning mill. Therefore, the precision of the revolving-flat elements, in particular of the flexible bend as such, and the adjustment of these elements to each other of very great importance. However, depending on the type of clothing selected, it may be necessary to have different initial settings of the flexible sheet in the range of up to 3 mm.

Die Bandbreite der Einstellungen bedingt es, dass die elastischen Eigenschaften der Flexibelbogen diese Verbiegung zulässt ohne den plastischen Bereich zu erreichen. Zu diesem Zweck sind die Flexibelbogen meist aus einer Speziallegierung gegossen, die die notwendige Elastizität hat und der notwendigen Form nachgeben kann. Allerdings ist der elastische Bereich und die damit verbundene maximale Verbiegung nicht immer zureichend für die gewünschte Einstellungsbandbreite. Dieser Effekt wird noch gravierender bei einem kleineren Trommeldurchmesser von zum Beispiel 1 m oder weniger, da bei einer gleichen Veränderung der Einstellung die effektive Verbiegung grösser ist. Für eine optimale Einstellungsvorrichtung ist es von Vorteil, dass der Bogen an seinem Ende frei bewegbar ist, sowohl in der radialen Einstellungsrichtung als auch in der Umfangsrichtung. Mögliche Fixierungen können die Bewegung in der Umfangsrichtung behindern oder einschränken. Durch die Benutzung an den Einstellmitteln am Ende der Flexibelbögen von Auflagefläche ohne jegliche Form von Fixierung der Flexibelbögen wird allerdings die maximale radiale Einstellungsbandbreite eingeschränkt. Grundsätzlich sind beide radiale Einstellungsrichtungen erwünscht: für die Vergrösserung des Kardierspalts, in radialer Richtung weg vom Mittelpunkt und für die Verkleinerung des Kardierspalts, in radialer Richtung in Richtung vom Mittelpunkt.The range of settings requires that the elastic properties of the flexible bend allow this bending without reaching the plastic area. For this purpose, the flexible sheets are usually cast from a special alloy, which has the necessary elasticity and can give way to the necessary shape. However, the elastic range and the associated maximum deflection is not always sufficient for the desired adjustment bandwidth. This effect becomes even more severe with a smaller drum diameter of, for example, 1 m or less, since the same bending change increases the effective deflection. For an optimum adjustment device, it is advantageous that the sheet is freely movable at its end, both in the radial adjustment direction and in the circumferential direction. Possible fixations may obstruct or restrict the movement in the circumferential direction. By the However, use of the adjustment means at the end of the flexible arches of support surface without any form of fixation of the flexible arches limits the maximum radial adjustment bandwidth. Basically, both radial adjustment directions are desired: for the enlargement of the carding gap, in the radial direction away from the center and for the reduction of the carding gap, in the radial direction in the direction of the center.

Wenn man von Einstellungsmittel ausgeht, die an den äusseren Enden der Flexibelbögen nur noch Auflageflächen haben, dann sind diese Einstellungsmittel nur noch im Stande zu stossen oder eine radiale Einstellung weg vom Mittelpunkt zu erzeugen. Der Weg zurück Richtung Mittelpunkt wird durch die elastischen Eigenschaften der Flexibelbögen bewirkt.If one starts from setting means which have only bearing surfaces at the outer ends of the flexible sheets, then these adjustment means are only able to push or create a radial adjustment away from the center. The way back towards the center is effected by the elastic properties of the flexible arches.

Der Flexibelbogen muss auf den kleinsten Radius hergestellt werden und kann nur für eine Vergrösserung des Radius benutzt werden. Hierdurch ist der Einstellungsbereich eingeschränkt. Bei einer Überdehnung der Bogen über der Streckgrenze hinaus kann der Bogen sich plastisch verformen und kehrt nicht mehr zurück in seinen Originalzustand.The flexible bend must be made to the smallest radius and can only be used for an increase in the radius. This limits the setting area. Overstretching the arch beyond the yield point can cause the arch to deform plastically and not return to its original state.

Die Erfindung liegt daher, die Aufgabe zugrunde einer Vorrichtung der Eingangs beschriebenen Art zu schaffen, die die genannten Nachteilen vermeidet.The invention is therefore based on the object to provide a device of the type described input, which avoids the disadvantages mentioned.

Diese Aufgabe wird erfindungsgemäss durch eine Vorrichtung mit den Merkmalen des unabhängigen Patentanspruchs 1 gelöst. Durch die erfinderische Federvorrichtung können die elastischen Eigenschaften der Bogen unterstützt werden. Die Federkraft der Vorrichtung wird derart angeordnet, dass mindestens in einer radialen Richtung der Bogen des elastischen Bereichs des Flexibelbogens unterstützt wird. Hierdurch kann eine grössere Einstellungsbandbreite erreicht werden, vorzugsweise in der radialen Richtung der Bogen, die bis anhin nur durch den elastische Bereich der Bogen abgedeckt war. Im Beispiel vorher wurde die Federvorrichtung gemäss Erfindung in Richtung des Mittelpunktes ausgerichtet. Ein Flexibelbogen mit einer Federvorrichtung derart angeordnet, muss nicht mehr auf den kleinsten Radius hergestellt werden, sondern kann auch auf eine mittlere Bogeneinstellung hergestellt werden. Für die Einstellungen weg vom Mittelpunkt drücken die Auflageflächen des Einstellmittels die Bogen weg, da für eine Verkleinerung des Radius die Federvorrichtung der Bogen diese Funktion übernimmt.This object is achieved according to the invention by a device having the features of independent patent claim 1. By the inventive spring device, the elastic properties of the bow can be supported. The spring force of the device is arranged such that the arc of the elastic region of the flexible bend is supported in at least one radial direction. In this way, a greater adjustment bandwidth can be achieved, preferably in the radial direction of the arc, which was hitherto covered only by the elastic region of the arc. In the example previously, the spring device according to the invention was aligned in the direction of the center. A flexible bow with a spring device arranged in such a way, no longer needs to be made to the smallest radius, but can also be made to an average sheet setting. For the settings away from the center press the bearing surfaces of the Adjustment means the bow away, because for a reduction of the radius, the spring device of the arch takes over this function.

Im Folgenden wird anhand von Beispielen die Erfindung näher erläutert.

Figur 1
Schematische Darstellung der Karde.
Figur 2
Beispiel einer Federvorrichtung nach der Erfindung.
Figur 3
Anordnung einer alternativen Federvorrichtung nach der Erfindung.
Figur 4
Anordnung einer alternativen Federvorrichtung nach der Erfindung.
In the following, the invention is explained in more detail by means of examples.
FIG. 1
Schematic representation of the card.
FIG. 2
Example of a spring device according to the invention.
FIG. 3
Arrangement of an alternative spring device according to the invention.
FIG. 4
Arrangement of an alternative spring device according to the invention.

Figur 1 zeigt eine Wanderdeckelkarde, z. B. die Rieter Karde C60 mit einer Arbeitsbreite von 1,5 Meter und einem Trommeldurchmesser von 1 Meter. Faserflocken werden durch Transportkanäle (nicht gezeigt) durch die verschiedenen Putzereiprozessstufen transportiert und schlussendlich in den Reinigerschacht 9 der Karde zugeführt. Statt eines Reinigerschachtes kann auch ein normaler Füllschacht vorgesehen werden. Dieser gibt die Faserflocken dann als Watte an die Karde weiter. Die Speisevorrichtung speist die Faserflocken zu den Vorreissern 3. Die Vorreisser 3 öffnen die Faserflocken und entfernen einen Teil der Schmutzpartikel. Die letzte Vorreisserwalze übergibt die Fasern an die Kardentrommel 1. Die Kardentrommel 1 arbeitet mit den Deckeln 6 zusammen und parallelisiert hierbei die Fasern noch weiter. Die Deckel werden gereinigt durch eine Deckelreinigung 8 und eventuell nachgeschliffen mittels eine Schleifvorrichtung. Nachdem die Fasern zum Teil mehrere Umläufe auf der Kardentrommel durchgeführt haben, werden sie von der Abnehmerwalze 4 von der Kardentrommel abgenommen, den Abnahmewalzen im Abnahmebereich 5 zugeführt und schliesslich als Kardenband in einem Kannenstock in einer Kanne abgelegt (nicht gezeigt). FIG. 1 shows a Wanderdeckelkarde, z. As the Rieter C60 card with a working width of 1.5 meters and a drum diameter of 1 meter. Fiber flakes are transported through transport channels (not shown) through the various cleaning process steps and finally fed into the cleaner shaft 9 of the card. Instead of a cleaners well, a normal hopper can be provided. This then passes the fiber flakes to the card as cotton wool. The feed device feeds the fiber flakes to the lickerins 3. The lickerins 3 open the fiber flakes and remove some of the dirt particles. The last licker-in roller passes the fibers to the card drum 1. The card drum 1 cooperates with the lids 6, thereby further parallelizing the fibers. The lids are cleaned by a lid cleaning 8 and possibly reground by means of a grinding device. After the fibers have partly carried out several revolutions on the card drum, they are removed from the doffer roller 4 of the card drum, fed to the take-off rollers in the take-off area 5 and finally stored as a card sliver in a can in a pot (not shown).

Die Deckel gehören zu einem System der Wanderdeckel 2, dabei werden Deckel 6 mit Hilfe von einem Endlosriemen oder eine Kette mittels einem Antrieb über der Trommeloberfläche fortbewegt, meistens gegen die Drehrichtung der Trommel. Die Deckel haben an ihren Enden Deckelendköpfe, die auf die Flexibelbögen 7 direkt oder indirekt gleiten. Die Unterseite der Deckel sind mit einem Garnitur versehen, zum Beispiel mit Sägezahngarnitur oder flexible Garnituren in der Form von Häkchen.The covers belong to a system of the revolving lid 2, thereby cover 6 are moved by means of an endless belt or a chain by means of a drive on the drum surface, usually against the direction of rotation of the drum. The lids have at their ends Deckelendköpfe that slide directly or indirectly on the Flexibelbögen 7. The underside of the covers are provided with a set, for example with sawtooth or flexible sets in the form of check mark.

Auch die Trommel hat eine Garnitur, die sogenannte Sägezahngarnitur. Ein Wanderdeckelsatz besteht aus rund 70 -120 Deckel, wovon nur ein Teil in Arbeitsstellung stehen. Die Anzahl Deckel in Arbeitsstellung ist unter anderem abhängig der Durchmesser der Trommel und von der Wandeldeckelanordnung. Im Schnitt sind 20 bis 46 Deckel in Arbeitsstellung. Zwischen der Garnitur der Trommel und die der Deckel ist ein Spalt, der Kardierspalt genannt wird. Dieser Kardierspalt wird normalerweise mit einem gleich bleibenden Abstand über die ganze Kontaktzone zwischen Deckel und Trommel eingestellt. Allerdings kann der Spalt auch Öffnend - der Kardierspalt wird stetig grösser - oder Schliessend - der Kardierspalt wird stetig kleiner - eingestellt werden. Für die Kontrolle der Einstellung können in der Seite der Bogen Schlitze angebracht sein, und mit Messlehren den Abstand zwischen dem Deckel- und Trommelbereich messen zu können.The drum also has a set, the so-called Sägezahngarnitur. A towing lid set consists of around 70 -120 lids, of which only a part are in working position. The number of lids in working position depends inter alia on the diameter of the drum and on the convertible lid arrangement. On average, 20 to 46 lids are in working position. Between the clothing of the drum and the lid is a gap called the carding nip. This carding nip is normally set at a constant distance over the entire contact zone between the lid and the drum. However, the gap can also Öffnend - the carding gap is steadily larger - or closing - the carding gap is steadily smaller - to be set. To check the adjustment, slits can be placed in the side of the arch, and gauges can be used to measure the distance between the lid and drum area.

Figur 2 zeigt ein erstes Beispiel einer erfinderischen Federvorrichtung für einen Flexibelbogen 7. Der Flexibelbogen hat in der Mitte Mittel zum Einstellen 11, die an dem Bogen befestigt sind. Hierdurch kann der Bogen auf diese Position in beide radialen Richtungen eingestellt werden, aber der Einstellungspunkt kann sich nicht seitlich verschieben. Die Einstellungspunkte 10 an den äusseren Enden der Bogen haben nur Mittel zum Einstellen zugeordnet, die eine Auflagefläche für den Bogen haben. Dadurch können diese Mittel den Bogen nur durch drücken radial nach oben, weg vom Mittelpunkt des Radius eingestellt werden. Die Einstellung auf einen kleineren Radius kann ohne die Federvorrichtung nur durch die elastischen Eigenschaften in einem beschränkten Einstellungsbereich stattfinden, unter der Voraussetzung, dass der Bogen auf den kleinsten gewünschten Radius hergestellt wurde. FIG. 2 shows a first example of an inventive spring device for a flexible sheet 7. The flexible sheet has in the middle means for adjusting 11, which are fixed to the sheet. As a result, the sheet can be adjusted to this position in both radial directions, but the adjustment point can not shift laterally. The adjustment points 10 at the outer ends of the sheets have only assigned means for adjusting, which have a support surface for the sheet. Thus, these means can be set the bow only by pressing radially upwards, away from the center of the radius. The adjustment to a smaller radius can take place without the spring device only by the elastic properties in a limited adjustment range, provided that the arc has been made to the smallest desired radius.

Gemäss der Erfindung wird unter dem Bogen eine Federvorrichtung in der Form einer Blattfeder 12 angeordnet, derart, dass die Federkraft den Flexibelbogen in radiale Richtung zum Mittelpunkt deformiert. Der Vorteil ist, dass diese Federvorrichtung die radiale Einstellung in Richtung Mittelpunkt unterstützt oder vom Bogen ganz übernimmt. Wird zum Beispiel der Bogen mit einem mittleren Einstellungsradius hergestellt und so wird die Feder derart ausgelegt, dass seine Kraft den kleinsten gewünschten Radius entspricht. Für eine radiale Bewegung weg vom Mittelpunkt arbeiten die Mittel zum Einstellen 10 und 11, wobei die Mittel am äusserem Ende der Bogen nur ein Druckbewegung ausüben. Für den Weg zum Mittelpunkt arbeitet entweder hauptsächlich der elastische Bereich des Flexibelbogens und/oder die Federvorrichtung 12. Die Federkraft der Blattfeder arbeiten in diesem Beispiel vor allem punktuell direkt auf die Enden der Bogen, und sind vorzugsweise oberhalb der Auflagefläche der Einstellmittel 10 angesetzt. Vorzugsweise ist die Feder im Mittelpunkt derart gelagert, dass sie weder in Umfangsrichtung noch in radialer Richtung eine Bewegung unabhängig vom Einstellmittel 11 machen kann.According to the invention, a spring device in the form of a leaf spring 12 is arranged under the bow, such that the spring force deforms the flexible bend in the radial direction to the center. The advantage is that this spring device supports the radial adjustment in the direction of the center or completely takes over from the bow. For example, if the arc is made with a medium setting radius, then the spring is designed so that its force corresponds to the smallest desired radius. For a radial movement away from the center operate the means for adjusting 10 and 11, the means exert only a pressure movement at the outer end of the sheet. For the way to the center works either mainly the elastic region of the flexible bend and / or the spring device 12. The spring force of the leaf spring work in this example, especially at certain points directly to the ends of the bow, and are preferably above the bearing surface of the adjusting means 10 attached. Preferably, the spring is mounted in the center in such a way that it can not make any movement in the circumferential direction or in the radial direction independently of the adjusting means 11.

Figur 3 zeigt ein vergleichbares Beispiel wie Figur 2, wobei der Bogen und die Einstellmittel vergleichbar sind mit Figur 2. Einzelne Federn 13 formen zusammen die Federvorrichtung, die auch eine punktuelle Federkraft auf die äusseren Einstellpunkte 10 ausübt. Bei einer radialen Einstellung in Richtung des Mittelpunktes ziehen die einzelnen Federn den Bogen mit. FIG. 3 shows a comparable example like FIG. 2 wherein the arc and the adjusting means are comparable to FIG. 2 , Individual springs 13 together form the spring device, which also exerts a selective spring force on the outer adjustment points 10. With a radial adjustment in the direction of the center, the individual springs pull the bow with.

Figur 4 zeigt auch wieder einen Bogen 7 und Einstellmittel 10,11, wie unter Figur 2 beschrieben. Allerdings ist die Federvorrichtung jetzt derart angeordnet, dass sich eine punktuelle Kräfteverteilung nicht ergibt, sondern derart, dass die Kräfteverteilung gleichmässig als Streckenlast über den Umfang der Bogen in Umfangsrichtung verteilt wird. Dieses kann zum Beispiel erreicht werden durch das Anbringen eines zweiten Materials 14, an der Seite der Bogen 7, zur Unterstützung der elastischen Eigenschaften in der gewünschten radialen Richtung. Siehe auch den Querschnitt in Figur 4a. FIG. 4 again shows a bow 7 and adjusting means 10,11, as under FIG. 2 described. However, the spring device is now arranged such that a punctual distribution of forces does not result, but in such a way that the distribution of forces is uniformly distributed as a line load over the circumference of the arc in the circumferential direction. This can be achieved, for example, by attaching a second material 14, on the side of the sheets 7, to support the elastic properties in the desired radial direction. See also the cross section in FIG. 4a ,

Durch die Benutzung einer Federvorrichtung gemäss Erfindung wäre es aber auch möglich, das Material für den Bogen anders zu wählen. Nicht mehr die elastischen Eigenschaften, sondern nur eine Verformbarkeit ist ausreichend. Die Unterstützung des ganzen elastischen Bereichs, die fehlt, kann mit einer Federvorrichtung in den gewünschten radialen Richtungen ausgeglichen werden.By using a spring device according to the invention, it would also be possible to choose the material for the bow differently. No longer the elastic properties, but only a deformability is sufficient. The support of the whole elastic region that is missing can be compensated with a spring device in the desired radial directions.

Claims (9)

  1. A spring mechanism (12, 13) for a flexible bend (7) of a revolving flat card (2), characterized in that the spring mechanism (12, 13) is designed in such a way that it can be arranged on a flexible bend (7) and that the spring mechanism (12, 13) is thereby assisting the bending of the flexible bend (7) in its elastic range in order to reduce the radius of the flexible bend (7), whereby setting means are assigned to setting points (10) at the outer ends of the flexible bends (7) and a spring force operates in a punctiform manner on the setting points (10).
  2. The spring mechanism (12, 13) as claimed in claim 1, characterized in that the spring force (F) is opposite to the direction of the setting element.
  3. A flexible bend (7) for a revolving flat card (2), characterized in that a spring mechanism (12, 13) is arranged at the flexible bend (7), whereby the spring mechanism (12, 13) is assisting the bending of the flexible bend (7) in its elastic range in order to reduce the radius of the flexible bend (7).
  4. The flexible bend (7) as claimed in claim 3, characterized in that setting means are assigned to setting points (10) at the outer ends of the flexible bends (7) and a spring force operates in a punctiform manner on the setting points (10).
  5. The flexible bend (7) as claimed in claim 3, characterized in that the spring mechanism (14) exerts a uniform load in the circumferential direction of the flexible bend (7).
  6. The flexible bend (7) as claimed in one of the claims 3 to 4, characterized in that the spring mechanism contains a leaf spring (12).
  7. The flexible bend (7) as claimed in claim 6, characterized in that the leaf spring (12) exerts a force on the outer setting points (10).
  8. The flexible bend (7) as claimed in claim 5, characterized in that a second material (14), which assists the elastic properties in the desired radial direction, is arranged on the sides of the flexible bend (7).
  9. A card having a flexible bend (7), characterized in that a spring mechanism (12, 13) is arranged on the flexible bend (7) and that the spring mechanism (12, 13) is thereby assisting the bending of the flexible bend (7) in its elastic range in order to reduce the radius of the flexible bend (7).
EP05714749A 2004-04-26 2005-04-12 Spring mechanism for a flex bow Not-in-force EP1740745B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7572004 2004-04-26
PCT/CH2005/000207 WO2005103350A1 (en) 2004-04-26 2005-04-12 Spring mechanism for a flex bow

Publications (2)

Publication Number Publication Date
EP1740745A1 EP1740745A1 (en) 2007-01-10
EP1740745B1 true EP1740745B1 (en) 2009-07-15

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ID=34963092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05714749A Not-in-force EP1740745B1 (en) 2004-04-26 2005-04-12 Spring mechanism for a flex bow

Country Status (5)

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EP (1) EP1740745B1 (en)
CN (1) CN1946887B (en)
BR (1) BRPI0510193A (en)
DE (1) DE502005007705D1 (en)
WO (1) WO2005103350A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH698689A2 (en) 2008-03-20 2009-09-30 Rieter Ag Maschf Flexible bend for a revolving and revolving.
CH703250A1 (en) * 2010-06-02 2011-12-15 Rieter Ag Maschf Supporting a flexible bend in a revolving flat.
CN101984160B (en) * 2010-10-21 2012-04-18 慈溪市益体模具塑料有限公司 Cover plate supporting ring for carding machine
CH713202A1 (en) * 2016-12-06 2018-06-15 Rieter Ag Maschf Flexible sheet of a card.
DE102019110670A1 (en) * 2019-06-06 2020-12-10 TRüTZSCHLER GMBH & CO. KG Card with a revolving lid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037710A1 (en) * 2000-08-02 2002-02-14 Rieter Ag Maschf Device for adjusting the working gap between the tips of cover sets and the tips of the drum set of a card
DE10106315A1 (en) * 2001-02-12 2002-08-29 Rieter Ag Maschf Method for operating a card and a card

Also Published As

Publication number Publication date
BRPI0510193A (en) 2007-10-02
CN1946887A (en) 2007-04-11
DE502005007705D1 (en) 2009-08-27
EP1740745A1 (en) 2007-01-10
WO2005103350A1 (en) 2005-11-03
CN1946887B (en) 2010-09-29

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