EP3162927B1 - Revolving flat card - Google Patents

Revolving flat card Download PDF

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Publication number
EP3162927B1
EP3162927B1 EP16194072.1A EP16194072A EP3162927B1 EP 3162927 B1 EP3162927 B1 EP 3162927B1 EP 16194072 A EP16194072 A EP 16194072A EP 3162927 B1 EP3162927 B1 EP 3162927B1
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EP
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Prior art keywords
licker
drum
cylinder
diameter
carding
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EP16194072.1A
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German (de)
French (fr)
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EP3162927A1 (en
Inventor
Rudolf HÄRDI
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP3162927A1 publication Critical patent/EP3162927A1/en
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02Carding machines
    • D01G15/12Details
    • D01G15/26Arrangements or disposition of carding elements

Definitions

  • the present invention relates to a revolving flat card.
  • the lid area forms the main carding zone together with the drum and has the function of dissolving the fiber flakes into individual fibers, eliminating impurities and dust, eliminating very short fibers, dissolving nits and parallelizing the fibers.
  • fixed lids, revolving lids or a mixture of fixed and revolving lids are used.
  • a narrow gap known as a carding gap, is formed between the clothing of the cover and the clothing of the drum.
  • revolving lids It results from the use of revolving lids in that the revolving lids, guided by curved strips - so-called flexible bends, regulating bends, flex bends or sliding bends - are guided along the circumference of the drum at a distance determined by these strips.
  • the size of the carding gap for a revolving flat card is between 0.10 and 0.30 mm for cotton or up to 0.40 mm for man-made fibers.
  • Revolving flat cards are suitable for processing fibers with an average fiber length of 8 to 60 mm.
  • the fiber flakes are fed via a flake feed to a licker-in arranged on the circumference of the drum, which opens the fiber flakes and feeds them to the drum.
  • the licker-in is a roller equipped with a clothing, which removes the fiber flakes from the feed and transfers them to the drum with the clothing.
  • the drum now guides the fibers past fixed lids and revolving lids to a customer arranged on their circumference. The customer serves to remove the now processed fibers from the drum and to hand them over in the form of a fleece for further processing.
  • the object of the invention of the present application is to create a revolving flat card, which is characterized by a low overall height, with the longest possible processing time for carding and cleaning the fibers in order to avoid fiber damage.
  • a revolving flat card for processing fibers with a fiber feed channel, a drum, with a licker-in arranged on the circumference of the drum and a customer arranged on the circumference of the drum.
  • the drum has a working width, a drum axis, a drum diameter and a drum rotation direction.
  • the fibers to be processed are transported from the licker-in to the customer in a fiber transport direction determined by the direction of drum rotation.
  • the licker-in has a licker-in axis and a licker-in diameter.
  • the customer has a customer axis and a customer diameter.
  • a revolving cover assembly is also arranged on the circumference of the drum between the licker-in and the customer, the revolving cover assembly being arranged after the licker-in, viewed in the fiber transport direction.
  • carding elements and cleaning elements for processing the fibers are provided, adapted to the respective requirements.
  • the drum axis and the licker-in axis lie in a licker-in plane and the pick-up axis and the drum axis lie in a pick-up plane.
  • a carding length is determined by a partial circumference of the drum surface between the licker-in level and the pick-up level in the fiber transport direction.
  • the remaining part of the circumference of the drum, which lies in the fiber transport direction between the customer level and the licker-in level, is for carding and cleaning the Fibers of minor importance.
  • This part of the drum circumference is used, for example, for the use of a grinding device for fitting the drum or for controlling the air balance.
  • the actual carding and cleaning of the fibers is determined by the partial circumference between the licker-in level and the customer level.
  • the revolving lapping unit is housed in a main carding zone and the cleaning elements and carding elements in the pre-carding zone and the post-carding zone.
  • the cleaning and carding elements must act aggressively on the fibers in order to achieve a high effect.
  • aggressive processing of the fibers leads to fiber damage, the fibers are torn or kinked.
  • a large number of good fibers are also carried away by the cleaning elements, which leads to poor use of raw materials and an increased amount of waste.
  • the path which the fibers travel during their processing is determined by the drum diameter and the angle between the licker-in level and the pick-up level, which determines the size of the partial circumference, which is equipped with carding and cleaning elements. It has been shown that a carding length of more than 3,000 mm is necessary in order to achieve high-quality carding and cleaning of the fibers with minimal fiber damage.
  • the carding length is advantageously greater than 3,100 mm. It is easy for the person skilled in the art to understand that increasing the drum diameter would result in an ever increasing carding length. However, an increase in the drum diameter also results in an increase in the centrifugal forces acting on the fibers with the drum rotating at a constant speed. The speed and the drum diameter determine the peripheral speed of the drum surface. The peripheral speed in turn determines the time period in which the fibers to be processed pass through the intended carding length. At a high speed at which the fibers are guided past the cleaning and carding elements, there is also high fiber damage. Cleaning and carding with a slow movement of the fibers results in a correspondingly gentle treatment of the fibers. Of course, the productivity of a revolving flat card can also be increased by increasing the working width of the drum, whereby today there is a technological limit of 1,500 mm for the working width of a carding drum.
  • a dimension of 1150 to 1250 mm represents the best possible compromise between high production and the fiber damage that has to be accepted.
  • a diameter of 1180 mm has proven to be particularly advantageous. For a production of approximately 100 kg per hour, this results in a drum speed of 580 revolutions per minute with a working width of 1500 mm. The length of time a fiber stays on the drum surface is 0.12 seconds. This time is available for cleaning and carding the fiber. A fiber is therefore already removed from the drum surface by the customer after an eighth of a second after it has been transferred from the licker to the drum surface. A further increase in the rotational speed of the drum also results in an increase in fiber damage due to an increase in the centrifugal forces acting on the fibers. It has been shown that for optimal operation of a card, taking into account the above reasoning regarding the quality of the fiber processing and the required productivity, a drum diameter of 1150 mm to 1250 mm at a drum speed of 500 to 650 revolutions per minute is suitable.
  • the pre-carding zone and the post-carding zone have the same length with respect to the drum surface. Because the individual fibers run through the entire carding length two to three times on average, it has proven to be advantageous to ensure uniform processing of the fibers by the built-in carding and cleaning elements.
  • the pre-carding zone is used to prepare the fibers for the subsequent main carding zone.
  • the post-carding zone calms down the fibers that are heavily used in the main carding zone. For both areas, the pre-carding zone and the postcarding zone, the longest possible area of the carding length must be made available.
  • the fibers in the form of a fleece are removed from the drum by the customer after processing.
  • the fleece can subsequently be combined into a so-called sliver.
  • the circumferential speed of the customer must be selected depending on the thickness of the removed fleece or the subsequent sliver.
  • the peripheral speed of the customer resulting from the customer diameter and the rotational speed of the customer is determined by a necessary take-over capacity due to the required strength of the fiber sliver and a fiber damage that is still to be accepted. It has been shown that a customer diameter of 50% to 60% of the drum diameter is a preferred compromise. A customer diameter of 58% in relation to the drum diameter is particularly preferred. For a sufficient removal capacity, the peripheral speed of the customer should not be selected higher than 15% of the peripheral speed of the drum surface.
  • a known revolving flat card 1 is shown, fiber flakes being fed from a filling shaft 2 to a fiber feed channel 3 and a subsequent drum 4.
  • the revolving flat card 1 comprises a single drum 4 (master cylinder or so-called drum) which is rotatably carried in a machine frame 5.
  • the drum 4 works in a known manner with a revolving cover assembly 6, a fiber feeding device in the form of a licker-in 7, and a fiber removal system 8, the latter in particular having a so-called doffer 9.
  • Carding elements and cleaning elements, as well as fiber guiding elements, which are not shown here, can be arranged between the revolving lid unit 6, the licker-in 7 and the taker 9.
  • the fiber removal system 8 conveys the fiber sliver 10 to a schematically indicated fiber sliver tray 11.
  • a large number of traveling lids 12 are provided on the revolving lid assembly 6, in which Figure 1 only individual revolving covers 12 are shown schematically.
  • Today's revolving cover assemblies 6 comprise several closely spaced revolving covers 12 which run around.
  • the revolving cover 12 is carried in the vicinity of its respective end faces by endless belts 13 and moved against or with the direction of rotation of the drum 4.
  • FIG. 2 shows a schematic representation of an embodiment according to the invention.
  • a licker-in 7 Arranged on the circumference of the drum 4 are a licker-in 7, a traveling lid assembly 6 and a pick-up 9.
  • the fibers applied to the drum 4 by the licker-in 7 are transported from the drum 4 in the fiber transport direction 30 past the traveling lid assembly 6 to the buyer 9.
  • the fiber transport direction 30 results from the drum rotation direction 29.
  • the licker-in axis 23 and the drum axis 21 lie in the licker-in plane 26.
  • the pick-up axis 25 and the drum axis 21 lie in the pick-up plane 27.
  • the carding zone is divided into a pre-carding zone 31, a main carding zone and a post-carding zone 32.
  • the pre-carding zone 31 and the post-carding zone 32 are provided with cleaning, carding and fiber guide elements which are arranged opposite the drum surface 28.
  • the elements are in different designs and sequences, adapted to the purpose of the card and the fibers to be processed.
  • the main carding zone is occupied by the revolving flat unit 6, which extends over the angle ⁇ between the pre-carding zone 31 and the post-carding zone 32.
  • the angle ⁇ is between 100 ° and 150 °, depending on the extension of the revolving cover assembly 6, a number of revolving covers are used.
  • the pre-carding zone 31 and the post-carding zone 32 extend over an identical length along the drum surface 28.
  • the licker-in 7 is on the side of the fiber feed and the pick-up 9 on the opposite side of the drum 4 arranged.
  • the licker-in 7 is arranged at a certain angle ⁇ to a vertical plane 33 through the drum axis 21.
  • the customer 9 is arranged according to the length of the carding zone.
  • the angle ⁇ is 15 ° in the exemplary embodiment shown.
  • the overall height 34 which results from the arrangement of licker-in 7, pickup 9 and revolving cover assembly 6, is also determined by the drum diameter 20 and the doffer diameter 24.
  • the licker-in 7 is arranged in the vertical plane 33, the licker-in diameter 22 can also have an influence have a height of 34.
  • the overall height 34 affects in particular the operability of the elements arranged above the drum 4 and should therefore be kept as low as possible.
  • the drum 4 has a diameter 20 of 1180 mm, the licker-in 7 a diameter 22 of 250 mm and the customer 9 a diameter 24 of 680 mm.
  • the licker-in 7 is arranged at an angle ⁇ of 12 ° against the vertical plane 33 and the inclination of the fiber feed channel 3 is 24 °.
  • the licker-in level 26 and the customer level 27 close an angle ⁇ of 307 °, which results in a carding length of 3160 mm.

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

Description

Die vorliegende Erfindung betrifft eine Wanderdeckelkarde. In einer Wanderdeckelkarde bildet der Deckelbereich zusammen mit der Trommel die Hauptkardierzone und hat als Funktion die Auflösung der Faserflocken zu Einzelfasern, Ausscheidung von Verunreinigungen und Staub, Eliminierung von sehr kurzen Fasern, die Auflösung von Nissen und die Parallelisierung der Fasern. Je nach Anwendung einer Wanderdeckelkarde werden dabei Festdeckel, Wanderdeckel oder eine Mischung aus Fest- und Wanderdeckel eingesetzt. Zwischen den Garnituren der Deckel und der Garnitur der Trommel formt sich ein enger Spalt, der Kardierspalt genannt wird. Er ergibt sich beim Einsatz von Wanderdeckeln indem die Wanderdeckel, geführt durch bogenförmige Leisten - sogenannte Flexibelbogen, Regulierbogen, Flexbogen oder Gleitbogen -, in einem durch diese Leisten bestimmten Abstand, in Umfangsrichtung der Trommel entlang geführt werden. Die Grösse des Kardierspaltes liegt bei einer Wanderdeckelkarde zwischen 0.10 bis 0.30 mm für Baumwolle oder bis 0.40 mm für Chemiefasern. Wanderdeckelkarden eignen sich für die Verarbeitung von Fasern mit einer mittleren Faserlänge von 8 bis 60 mm.The present invention relates to a revolving flat card. In a revolving flat card, the lid area forms the main carding zone together with the drum and has the function of dissolving the fiber flakes into individual fibers, eliminating impurities and dust, eliminating very short fibers, dissolving nits and parallelizing the fibers. Depending on the application of a revolving flat card, fixed lids, revolving lids or a mixture of fixed and revolving lids are used. A narrow gap, known as a carding gap, is formed between the clothing of the cover and the clothing of the drum. It results from the use of revolving lids in that the revolving lids, guided by curved strips - so-called flexible bends, regulating bends, flex bends or sliding bends - are guided along the circumference of the drum at a distance determined by these strips. The size of the carding gap for a revolving flat card is between 0.10 and 0.30 mm for cotton or up to 0.40 mm for man-made fibers. Revolving flat cards are suitable for processing fibers with an average fiber length of 8 to 60 mm.

Bei einer bekannten Wanderdeckelkarde werden die Faserflocken über eine Flockenspeisung einem am Umfang der Trommel angeordneten Vorreisser zugeführt, welcher die Faserflocken öffnet und der Trommel zuführt. Der Vorreisser ist eine mit einer Garnitur versehene Walze, welche die Faserflocken aus der Speisung entnimmt und mit Hilfe der Garnitur auf die Trommel überträgt. Die Trommel führt nun die Fasern vorbei an Festdeckeln und Wanderdeckeln zu einem an ihrem Umfang angeordneten Abnehmer. Der Abnehmer dient dazu die nun bearbeiteten Fasern von der Trommel abzunehmen und diese in Form eines Vlieses der weiteren Bearbeitung zu übergeben.In a known revolving flat card, the fiber flakes are fed via a flake feed to a licker-in arranged on the circumference of the drum, which opens the fiber flakes and feeds them to the drum. The licker-in is a roller equipped with a clothing, which removes the fiber flakes from the feed and transfers them to the drum with the clothing. The drum now guides the fibers past fixed lids and revolving lids to a customer arranged on their circumference. The customer serves to remove the now processed fibers from the drum and to hand them over in the form of a fleece for further processing.

In der EP 2 527 505 wurde eine Wanderdeckelkarde offenbart, welche eine bestimmte geometrische Anordnung von Vorreisser und Abnehmer zur Erreichung einer hohen Produktivität vorschlägt. Die gesamte Geometrie richtet sich dabei nach einer horizontalen Ausrichtung der Karde. Nachteilig an der Vorrichtung ist, dass sich durch die Anordnung von Vorreisser und Abnehmer eine grosse Bauhöhe der Karde ergibt und dabei ein möglicher Transportweg auf der Trommel nicht genutzt wird. In der EP 0 866 153 A1 wurde eine Wanderdeckelkarde offenbart, welche eine neuartige kleintambourige Karde vorsieht. Durch den kleinen Durchmesser der Trommel wird unter anderem eine Begrenzung der Unterkardierzone vorgesehen. Dabei schliessen der Vorreisser und der Abnehmer einen Winkel von 60 bis 75 Winkelgrade ein. Die gesamte Geometrie richtet sich dabei nach dem Durchmesser der Trommel, wobei auf die Anordnung der einzelnen Aggregate rund um die Trommel nicht näher eingegangen wird.In the EP 2 527 505 A revolving flat card was disclosed, which suggests a certain geometric arrangement of licker-in and taker in order to achieve high productivity. The entire geometry is based on a horizontal alignment of the card. The disadvantage of the device is that the arrangement of the licker-in and customer results in a large overall height of the card and a possible transport route on the drum is not used. In the EP 0 866 153 A1 a revolving flat card was disclosed, which provides a novel small-drum card. Due to the small diameter of the drum, a limitation of the sub-carding zone is provided. The licker-in and the taker enclose an angle of 60 to 75 degrees. The entire geometry is based on the diameter of the drum, whereby the arrangement of the individual units around the drum is not discussed in detail.

Der Erfindung der vorliegenden Anmeldung liegt die Aufgabe zugrunde, eine Wanderdeckelkarde zu schaffen, welche sich durch eine geringe Bauhöhe auszeichnet, wobei eine möglichst lange Bearbeitungsdauer für die Kardierung und Reinigung der Fasern zur Vermeidung von Faserschädigungen vorzusehen ist.The object of the invention of the present application is to create a revolving flat card, which is characterized by a low overall height, with the longest possible processing time for carding and cleaning the fibers in order to avoid fiber damage.

Die Aufgabe wird gelöst durch die Merkmale im kennzeichnenden Teil des unabhängigen Anspruchs.The object is achieved by the features in the characterizing part of the independent claim.

Zur Lösung der Aufgabe wird eine Wanderdeckelkarde zur Bearbeitung von Fasern mit einem Faserzuführungskanal, einer Trommel, mit einem am Umfang der Trommel angeordneten Vorreisser und einem am Umfang der Trommel angeordneten Abnehmer vorgeschlagen. Die Trommel hat eine Arbeitsbreite, eine Trommelachse, einen Trommeldurchmesser und eine Trommeldrehrichtung. Die zu bearbeitenden Fasern werden durch die Trommel in einer durch die Trommeldrehrichtung bestimmten Fasertransportrichtung vom Vorreisser zum Abnehmer transportiert. Der Vorreisser hat eine Vorreisserachse und einen Vorreisserdurchmesser. Der Abnehmer hat eine Abnehmerachse und einen Abnehmerdurchmesser. Ebenfalls am Umfang der Trommel ist zwischen dem Vorreisser und dem Abnehmer ein Wanderdeckelaggregat angeordnet, wobei das Wanderdeckelaggregat in Fasertransportrichtung gesehen nach dem Vorreisser angeordnet ist. Zwischen dem Vorreisser und dem Wanderdeckelaggregat ist eine Vorkardierzone und zwischen dem Wanderdeckelaggregat und dem Abnehmer eine Nachkardi erzone gebildet. In der Vorkardierzone und der Nachkardierzone sind dem jeweiligen Bedarf angepasst Kardierelemente und Reinigungselemente zur Bearbeitung der Fasern vorgesehen. Die Trommelachse und die Vorreisserachse liegen in einer Vorreisserebene und die Abnehmerachse und die Trommelachse liegen in einer Abnehmerebene. Durch einen Teilumfang der Trommeloberfläche zwischen der Vorreisserebene und der Abnehmerebene in Fasertransportrichtung ist eine Kardierlänge bestimmt. Der restliche Teilumfang der Trommel, welcher in Fasertransportrichtung zwischen der Abnehmerebene und der Vorreisserebene liegt ist für die Kardierung und Reinigung der Fasern von untergeordneter Bedeutung. Dieser Teil des Trommelumfangs wird beispielsweise für den Einsatz eines Schleifgerätes für die Garnitur der Trommel oder auch die Steuerung des Lufthaushaltes genutzt.
Die eigentliche Kardierung und Reinigung der Fasern wird über den Teilumfang zwischen der Vorreisserebene und der Abnehmerebene bestimmt. Über diesem Teil der Trommeloberfläche sind in einer Hauptkardierzone das Wanderdeckelaggregat und in der Vorkardierzone und der Nachkardierzone die Reinigungselemente und Kardierelemente untergebracht. Zudem hat es sich gezeigt, dass eine Faser, welche über den Faserzuführungskanal an den Vorreisser und von diesem auf die Trommel überführt wurde, im Mittel etwa zwei- bis dreimal um die Trommel umläuft bis sie durch den Abnehmer von der Trommel abgenommen wird. Um nun während dieser zwei Umläufe eine möglichst schonende Reinigung und Kardierung der Fasern zu erreichen, ist es vorteilhaft wenn die Fasern einen möglichst langen Weg zurücklegen. Dies wird dadurch erreicht, dass die Vorreisserebene und die Abnehmerebene in Fasertransportrichtung gesehen einen Winkel von mehr als 305° einschliessen.
To solve the problem, a revolving flat card is proposed for processing fibers with a fiber feed channel, a drum, with a licker-in arranged on the circumference of the drum and a customer arranged on the circumference of the drum. The drum has a working width, a drum axis, a drum diameter and a drum rotation direction. The fibers to be processed are transported from the licker-in to the customer in a fiber transport direction determined by the direction of drum rotation. The licker-in has a licker-in axis and a licker-in diameter. The customer has a customer axis and a customer diameter. A revolving cover assembly is also arranged on the circumference of the drum between the licker-in and the customer, the revolving cover assembly being arranged after the licker-in, viewed in the fiber transport direction. There is a pre-carding zone between the licker-in and the revolving flat aggregate and a post-cardi between the revolving flat aggregate and the customer erzone formed. In the pre-carding zone and the post-carding zone, carding elements and cleaning elements for processing the fibers are provided, adapted to the respective requirements. The drum axis and the licker-in axis lie in a licker-in plane and the pick-up axis and the drum axis lie in a pick-up plane. A carding length is determined by a partial circumference of the drum surface between the licker-in level and the pick-up level in the fiber transport direction. The remaining part of the circumference of the drum, which lies in the fiber transport direction between the customer level and the licker-in level, is for carding and cleaning the Fibers of minor importance. This part of the drum circumference is used, for example, for the use of a grinding device for fitting the drum or for controlling the air balance.
The actual carding and cleaning of the fibers is determined by the partial circumference between the licker-in level and the customer level. Above this part of the drum surface, the revolving lapping unit is housed in a main carding zone and the cleaning elements and carding elements in the pre-carding zone and the post-carding zone. In addition, it has been shown that a fiber which has been transferred to the licker-in and from the licker-in to the drum via the fiber feed channel rotates around the drum about two to three times on average until it is removed from the drum by the customer. In order to achieve the most gentle cleaning and carding of the fibers during these two cycles, it is advantageous if the fibers cover the longest possible route. This is achieved in that the licker-in level and the pick-up level form an angle of more than 305 ° when viewed in the fiber transport direction.

Umso länger der Weg ist, während dem die Fasern für eine Reinigung und Kardierung zur Verfügung stehen, desto schonender kann deren Behandlung erfolgen. Steht hingegen nur ein kurzer Weg zur Verfügung, müssen die Reinigungs- und Kardierelemente aggressiv auf die Fasern einwirken um eine hohe Wirkung zu erzielen. Eine aggressive Bearbeitung der Fasern führt jedoch zu Faserschädigungen, die Fasern werden zerrissen oder geknickt. Auch wird durch die Reinigungselemente eine grössere Anzahl Gutfasern mitgerissen, was zu einer schlechten Rohstoffausnutzung und zu einem erhöhten Anfall von Abfall führt. Der Weg welchen die Fasern während ihrer Bearbeitung zurücklegen wird bestimmt durch den Trommeldurchmesser und den Winkel zwischen der Vorreisserebene und der Abnehmerebene, welcher die Grösse des Teilumfangs bestimmt, welcher mit Kardier- und Reinigungselementen bestückt ist. Es hat sich gezeigt, dass eine Kardierlänge von mehr als 3'000 mm notwendig ist um eine qualitativ hochwertige Kardierung und Reinigung der Fasern bei einer minimalen Faserschädigung zu erreichen.The longer the path along which the fibers are available for cleaning and carding, the gentler they can be treated. If, on the other hand, there is only a short path available, the cleaning and carding elements must act aggressively on the fibers in order to achieve a high effect. However, aggressive processing of the fibers leads to fiber damage, the fibers are torn or kinked. A large number of good fibers are also carried away by the cleaning elements, which leads to poor use of raw materials and an increased amount of waste. The path which the fibers travel during their processing is determined by the drum diameter and the angle between the licker-in level and the pick-up level, which determines the size of the partial circumference, which is equipped with carding and cleaning elements. It has been shown that a carding length of more than 3,000 mm is necessary in order to achieve high-quality carding and cleaning of the fibers with minimal fiber damage.

Vorteilhafterweise ist die Kardierlänge grösser als 3'100 mm. Es ist für den Fachmann einfach verständlich, dass eine Vergrösserung des Trommeldurchmessers zu einer immer grösseren Kardierlänge führen würde. Jedoch ergibt sich aus einer Vergrösserung des Trommeldurchmessers auch eine Vergrösserung der auf die Fasern wirkenden Fliehkräfte bei gleichbleibender Drehzahl der Trommel. Die Drehzahl und der Trommeldurchmesser bestimmen die Umfangsgeschwindigkeit der Trommeloberfläche. Die Umfangsgeschwindigkeit wiederum bestimmt die Zeitdauer, in welcher die zu bearbeitenden Fasern die vorgesehene Kardierlänge durchlaufen. Bei einer hohen Geschwindigkeit, mit welcher die Fasern an den Reinigungs- und Kardierelementen vorbeigeführt werden, entsteht auch eine hohe Faserschädigung. Eine Reinigung und Kardierung mit einer langsamen Bewegung der Fasern ergibt eine entsprechend schonende Behandlung der Fasern. Selbstverständlich kann die Produktivität einer Wanderdeckelkarde auch durch eine Vergrösserung der Arbeitsbreite der Trommel gesteigert werden, wobei bei der Arbeitsbreite einer Trommel einer Karde heute eine technologische Grenze von 1'500 mm vorherrscht.The carding length is advantageously greater than 3,100 mm. It is easy for the person skilled in the art to understand that increasing the drum diameter would result in an ever increasing carding length. However, an increase in the drum diameter also results in an increase in the centrifugal forces acting on the fibers with the drum rotating at a constant speed. The speed and the drum diameter determine the peripheral speed of the drum surface. The peripheral speed in turn determines the time period in which the fibers to be processed pass through the intended carding length. At a high speed at which the fibers are guided past the cleaning and carding elements, there is also high fiber damage. Cleaning and carding with a slow movement of the fibers results in a correspondingly gentle treatment of the fibers. Of course, the productivity of a revolving flat card can also be increased by increasing the working width of the drum, whereby today there is a technological limit of 1,500 mm for the working width of a carding drum.

Für den Trommeldurchmesser hat sich gezeigt, dass eine Abmessung von 1150 bis 1250 mm als der bestmögliche Kompromiss zwischen einer hohen Produktion und der in Kauf zu nehmenden Faserschädigung darstellt. Als besonders vorteilhaft hat sich ein Durchmesser von 1180 mm hervorgetan. Für eine Produktion von etwa 100 kg pro Stunde ergibt sich daraus bei einer Arbeitsbreite von 1500 mm eine Drehzahl der Trommel von 580 Umdrehungen pro Minute. Die Aufenthaltsdauer einer Faser auf der Trommeloberfläche ergibt sich dabei zu 0.12 Sekunden. Diese Zeit steht für die Reinigung und Kardierung der Faser zur Verfügung. Eine Faser wird also bereits nach einer achtel Sekunde, nachdem sie vom Vorreisser auf die Trommeloberfläche überführt wurde, vom Abnehmer bereits wieder von der Trommeloberfläche entfernt. Eine weitere Steigerung der Drehzahl der Trommel ergibt durch eine Zunahme der auf die Fasern wirkenden Fliehkräfte ebenfalls eine Erhöhung der Faserschädigung. Es hat sich gezeigt, dass sich für einen optimalen Betrieb einer Karde, unter Berücksichtigung obiger Argumentation hinsichtlich der Qualität der Faserbearbeitung und der geforderten Produktivität, ein Trommeldurchmesser von 1150 mm bis 1250 mm bei einer Drehzahl der Trommel von 500 bis 650 Umdrehungen pro Minute eignet.For the drum diameter, it has been shown that a dimension of 1150 to 1250 mm represents the best possible compromise between high production and the fiber damage that has to be accepted. A diameter of 1180 mm has proven to be particularly advantageous. For a production of approximately 100 kg per hour, this results in a drum speed of 580 revolutions per minute with a working width of 1500 mm. The length of time a fiber stays on the drum surface is 0.12 seconds. This time is available for cleaning and carding the fiber. A fiber is therefore already removed from the drum surface by the customer after an eighth of a second after it has been transferred from the licker to the drum surface. A further increase in the rotational speed of the drum also results in an increase in fiber damage due to an increase in the centrifugal forces acting on the fibers. It has been shown that for optimal operation of a card, taking into account the above reasoning regarding the quality of the fiber processing and the required productivity, a drum diameter of 1150 mm to 1250 mm at a drum speed of 500 to 650 revolutions per minute is suitable.

Weiterhin ist es vorteilhaft, wenn die Vorkardierzone und die Nachkardierzone bezüglich der Trommeloberfläche die gleiche Länge aufweisen. Dadurch, dass die einzelnen Fasern im Mittel zwei- bis dreimal die gesamte Kardierlänge durchlaufen, hat es sich als vorteilhaft erwiesen eine gleichmässige Bearbeitung der Fasern durch die eingebauten Kardier- und Reinigungselemente zu gewährleisten. Die Vorkardierzone dient der Vorbereitung der Fasern auf die nachfolgende Hauptkardierzone. Durch die Nachkardierzone wird eine Beruhigung der in der Hauptkardierzone stark beanspruchten Fasern erreicht. Für beide Bereiche, Vorkardierzone sowie Nachkardierzone ist ein möglichst langer Bereich der Kardierlänge zur Verfügung zu stellen.It is also advantageous if the pre-carding zone and the post-carding zone have the same length with respect to the drum surface. Because the individual fibers run through the entire carding length two to three times on average, it has proven to be advantageous to ensure uniform processing of the fibers by the built-in carding and cleaning elements. The pre-carding zone is used to prepare the fibers for the subsequent main carding zone. The post-carding zone calms down the fibers that are heavily used in the main carding zone. For both areas, the pre-carding zone and the postcarding zone, the longest possible area of the carding length must be made available.

Durch den Abnehmer werden die Fasern in Form eines Vlieses von der Trommel nach deren Bearbeitung abgenommen. Das Vlies kann in der Folge zu einem sogenannten Faserband zusammengefasst werden. Abhängig davon, in welcher Stärke das abgenommene Vlies oder das nachfolgende Faserband ausgeführt sein sollen, ist die Umfangsgeschwindigkeit des Abnehmers zu wählen. Die sich durch den Abnehmerdurchmesser und die Drehzahl des Abnehmers ergebende Umfangsgeschwindigkeit des Abnehmers wird bestimmt durch eine notwendige Übernahmekapazität aufgrund der geforderten Stärke des Faserbandes und eine noch zu akzeptierende Faserschädigung. Es hat sich gezeigt, dass ein Abnehmerdurchmesser von 50% bis 60% des Trommeldurchmessers ein zu bevorzugender Kompromiss darstellt. Besonders zu bevorzugen ist ein Abnehmerdurchmesser von 58% in Bezug zum Trommeldurchmesser. Für eine genügende Abnahmekapazität ist die Umfangsgeschwindigkeit des Abnehmers nicht höher als 15% der Umfangsgeschwindigkeit der Trommeloberfläche zu wählen.The fibers in the form of a fleece are removed from the drum by the customer after processing. The fleece can subsequently be combined into a so-called sliver. The circumferential speed of the customer must be selected depending on the thickness of the removed fleece or the subsequent sliver. The peripheral speed of the customer resulting from the customer diameter and the rotational speed of the customer is determined by a necessary take-over capacity due to the required strength of the fiber sliver and a fiber damage that is still to be accepted. It has been shown that a customer diameter of 50% to 60% of the drum diameter is a preferred compromise. A customer diameter of 58% in relation to the drum diameter is particularly preferred. For a sufficient removal capacity, the peripheral speed of the customer should not be selected higher than 15% of the peripheral speed of the drum surface.

Durch den Vorreisser werden die Fasern aus dem Faserzuführungskanal entnommen und auf die Trommel übergeben. Die Übergabe der Fasern erfolgt mittels einer Dosierungsstelle, welche unmittelbar am Vorreisser angebracht ist. Üblicherweise werden sogenannte Speisemulden verwendet. Mit der Speisemulde wird die Weite des Durchgangs vom Faserzuführungskanal zum Vorreisser geregelt, wodurch eine gleichmässige und einem aktuellen Bedarf entsprechende Menge an Fasern vom Vorreisser aus dem Faserzuführungskanal entnommen wird. Zur besseren Entnahme der Fasern ist der Faserführungskanal mit einer Neigung von 10° bis 25° an den Vorreisser herangeführt. Um eine Stauung der Fasern auf dem Vorreisser zu verhindern, ist zu gewährleisten, dass die Fasern welche vom Vorreisser dem Faserzuführungskanal entnommen wurden möglichst im ersten Umlauf um den Vorreisser durch die Trommel übernommen werden. Dies wird dadurch erreicht, dass die Umfangsgeschwindigkeit des Vorreissers auf seinem Umfang 45% bis 55% der Umfangsgeschwindigkeit der Trommel entspricht. Umso geringer jedoch der Durchmesser des Vorreissers ist, desto höher ist die Drehzahl des Vorreissers zu wählen, was wiederum zu einer Verschlechterung der Verhältnisse auf der Vorreisseroberfläche für den Fasertransport (Fliehkräfte, Faserschädigung) ergibt. Als vorteilhaft hat es sich erwiesen, wenn der Vorreisserdurchmesser 18% bis 25% des Trommeldurchmessers beträgt. Besonders zu bevorzugen ist ein Vorreisserdurchmesser von 22% in Bezug zum Trommeldurchmesser.
Für die Anordnung von Abnehmer und Vorreisser am Umfang der Trommel ist zu beachten, dass die zu bedienenden Elemente der Wanderdeckelkarde nicht in Bereiche verlegt werden, welche durch das Bedienpersonal unerreichbar sind. Die Höhe der Wanderdeckelkarde wir im Wesentlichen bestimmt durch die Anordnung des Abnehmers und das Wanderdeckelaggregat. Üblicherweise wird das Wanderdeckelaggregat zumindest teilweise über der Trommel geführt. Dadurch das sich die Vorreisserebene und die Abnehmerebene auf weniger als 55° einander nähern, kommen Vorreisser wie auch Abnehmer seitlich unterhalb der Trommel zu liegen, wenn die Hauptkardierzone oberhalb des Zenits der Trommel angeordnet werden soll. Um die Bauhöhe der gesamten Wanderdeckelkarde möglichst gering zu halten ist es erfindungsgemäß vorgesehen, dass die Vorreisserebene in Fasertransportrichtung einen Winkel von 0° bis 20° zu einer lotrechten Ebene durch die Trommelachse einschliesst. Besonders zu bevorzugen ist eine Anordnung der Vorreisserebene mit einem Winkel von 5° bis 15° zur lotrechten Ebene durch die Trommelachse.
Im Folgenden wird die Erfindung anhand einer beispielhaften Ausführungsform erklärt und durch Figuren näher erläutert.

  • Figur 1 Schematische Darstellung einer Wanderdeckelkarde
  • Figur 2 Schematische Darstellung einer Ausführungsform nach der Erfindung
The licker removes the fibers from the fiber feed channel and transfers them to the drum. The fibers are transferred by means of a dosing point, which is attached directly to the licker-in. So-called food troughs are usually used. The feed trough regulates the width of the passage from the fiber feed channel to the licker-in, which means that a uniform amount of fibers is taken from the licker-in from the fiber feed channel in accordance with a current requirement. For better removal of the fibers the fiber guide channel is guided to the licker with an inclination of 10 ° to 25 °. In order to prevent the fibers from jamming on the licker-in, it must be ensured that the fibers which have been taken from the licker-in from the fiber feed channel are taken over by the drum in the first circulation around the licker-in, if possible. This is achieved in that the peripheral speed of the licker corresponds on its circumference 45% to 55% of the peripheral speed of the drum. However, the smaller the diameter of the licker-in, the higher the speed of the licker-in must be selected, which in turn leads to a deterioration in the conditions on the licker-in surface for fiber transport (centrifugal forces, fiber damage). It has proven to be advantageous if the licker-in diameter is 18% to 25% of the drum diameter. A licker-in diameter of 22% in relation to the drum diameter is particularly preferred.
When arranging the customer and the licker-in on the circumference of the drum, it should be noted that the elements of the revolving flat card to be operated are not moved to areas that are inaccessible to the operating personnel. The height of the revolving flat card is essentially determined by the arrangement of the customer and the revolving flat aggregate. The revolving cover assembly is usually guided at least partially over the drum. Due to the fact that the licker-in level and the pick-up level approach each other at less than 55 °, licker-in as well as takers come to lie laterally below the drum if the main carding zone is to be arranged above the zenith of the drum. In order to keep the overall height of the entire revolving flat card as low as possible, the invention provides that the licker-in plane includes an angle of 0 ° to 20 ° to a vertical plane through the drum axis in the fiber transport direction. An arrangement of the licker-in plane at an angle of 5 ° to 15 ° to the vertical plane through the drum axis is particularly preferred.
The invention is explained below using an exemplary embodiment and explained in more detail by means of figures.
  • Figure 1 Schematic representation of a revolving flat card
  • Figure 2 Schematic representation of an embodiment according to the invention

In der Figur 1 ist eine bekannte Wanderdeckelkarde 1 dargestellt, wobei Faserflocken von einem Füllschacht 2 einem Faserzuführungskanal 3 und einer nachfolgenden Trommel 4 zugeführt werden. Die Wanderdeckelkarde 1 umfasst eine einzige Trommel 4 (Hauptzylinder oder sogenannter Tambour), die drehbar in einem Maschinengestell 5 getragen wird. Die Trommel 4 arbeitet in bekannter Weise mit einem Wanderdeckelaggregat 6, einer Faserspeisevorrichtung in Form eines Vorreissers 7, sowie einem Faserabnehmersystem 8 zusammen, wobei letzteres insbesondere einen sogenannten Abnehmer 9 aufweist. Zwischen dem Wanderdeckelaggregat 6, dem Vorreisser 7 und dem Abnehmer 9 können Kardierelemente und Reinigungselemente sowie Faserleitelemente angeordnet sein, die hier nicht näher gezeigt sind. Das Faserabnehmersystem 8 fördert das Faserband 10 zu einer schematisch angedeuteten Faserbandablage 11. Am genannten Wanderdeckelaggregat 6 ist eine Vielzahl von Wanderdeckeln 12 vorgesehen, wobei in der Figur 1 nur einzelne Wanderdeckel 12 schematisch abgebildet sind. Heute gebräuchliche Wanderdeckelaggregate 6 umfassen mehrere eng beabstandete Wanderdeckel 12, die umlaufen. Hierzu werden die Wanderdeckel 12 in der Nähe ihrer jeweiligen Stirnseiten von Endlosbändern 13 getragen und gegen oder mit der Drehrichtung der Trommel 4 bewegt.In the Figure 1 A known revolving flat card 1 is shown, fiber flakes being fed from a filling shaft 2 to a fiber feed channel 3 and a subsequent drum 4. The revolving flat card 1 comprises a single drum 4 (master cylinder or so-called drum) which is rotatably carried in a machine frame 5. The drum 4 works in a known manner with a revolving cover assembly 6, a fiber feeding device in the form of a licker-in 7, and a fiber removal system 8, the latter in particular having a so-called doffer 9. Carding elements and cleaning elements, as well as fiber guiding elements, which are not shown here, can be arranged between the revolving lid unit 6, the licker-in 7 and the taker 9. The fiber removal system 8 conveys the fiber sliver 10 to a schematically indicated fiber sliver tray 11. A large number of traveling lids 12 are provided on the revolving lid assembly 6, in which Figure 1 only individual revolving covers 12 are shown schematically. Today's revolving cover assemblies 6 comprise several closely spaced revolving covers 12 which run around. For this purpose, the revolving cover 12 is carried in the vicinity of its respective end faces by endless belts 13 and moved against or with the direction of rotation of the drum 4.

Figur 2 zeigt in schematischer Darstellung eine Ausführungsform nach der Erfindung. Am Umfang der Trommel 4 angeordnet sind ein Vorreisser 7, ein Wanderdeckelaggregat 6 und ein Abnehmer 9. Die durch den Vorreisser 7 auf die Trommel 4 aufgebrachten Fasern werden von der Trommel 4 in der Fasertransportrichtung 30 vorbei am Wanderdeckelaggregat 6 zum Abnehmer 9 transportiert. Die Fasertransportrichtung 30 ergibt sich aus der Trommeldrehrichtung 29. Figure 2 shows a schematic representation of an embodiment according to the invention. Arranged on the circumference of the drum 4 are a licker-in 7, a traveling lid assembly 6 and a pick-up 9. The fibers applied to the drum 4 by the licker-in 7 are transported from the drum 4 in the fiber transport direction 30 past the traveling lid assembly 6 to the buyer 9. The fiber transport direction 30 results from the drum rotation direction 29.

Die Vorreisserachse 23 und die Trommelachse 21 liegen in der Vorreisserebene 26. Die Abnehmerachse 25 und die Trommelachse 21 liegen in der Abnehmerebene 27. Zwischen der Vorreisserebene 26 und der Abnehmerebene 27 befindet sich in Fasertransportrichtung 30 gesehen die Kardierzone, welche sich über einen Winkel α von mehr als 305° erstreckt. Die Kardierzone teilt sich auf in eine Vorkardierzone 31, eine Hauptkardierzone und eine Nachkardierzone 32. Die Vorkardierzone 31 und die Nachkardierzone 32 sind mit Reinigungs-, Kardier- und Faserleitelementen versehen, welche gegenüber der Trommeloberfläche 28 angeordnet sind. Die Elemente (nicht dargestellt) sind in unterschiedlicher Bauart und Reihenfolge, angepasst an den Einsatzzweck der Karde sowie die zu verarbeitenden Fasern. Die Hauptkardierzone wird durch das Wanderdeckelaggregat 6 eingenommen, welches sich über den Winkel γ zwischen der Vorkardierzone 31 und der Nachkardierzone 32 erstreckt. Der Winkel γ beträgt zwischen 100° und 150°, entsprechend der Ausdehnung des Wanderdeckelaggregates 6 kommt eine Anzahl Wanderdeckel zum Einsatz. Die Vorkardierzone 31 und die Nachkardierzone 32 erstrecken sich über eine identische Länge entlang der Trommeloberfläche 28.The licker-in axis 23 and the drum axis 21 lie in the licker-in plane 26. The pick-up axis 25 and the drum axis 21 lie in the pick-up plane 27. Between the licker-in plane 26 and the pick-up plane 27, in the fiber transport direction 30, there is the carding zone, which is at an angle α of extends more than 305 °. The carding zone is divided into a pre-carding zone 31, a main carding zone and a post-carding zone 32. The pre-carding zone 31 and the post-carding zone 32 are provided with cleaning, carding and fiber guide elements which are arranged opposite the drum surface 28. The elements (not shown) are in different designs and sequences, adapted to the purpose of the card and the fibers to be processed. The main carding zone is occupied by the revolving flat unit 6, which extends over the angle γ between the pre-carding zone 31 and the post-carding zone 32. The angle γ is between 100 ° and 150 °, depending on the extension of the revolving cover assembly 6, a number of revolving covers are used. The pre-carding zone 31 and the post-carding zone 32 extend over an identical length along the drum surface 28.

Bedingt durch den Faserfluss innerhalb der Karde, Speisung der Fasern von der einen Seite der Trommel 4 und Abfluss der bearbeiteten Fasern auf der gegenüberliegenden Seite der Trommel 4, ist der Vorreisser 7 auf der Seite der Faserzuführung und der Abnehmer 9 auf der gegenüberliegenden Seite der Trommel 4 angeordnet. Dabei ist der Vorreisser 7 in einem bestimmten Winkel β zu einer lotrechten Ebene 33 durch die Trommelachse 21 angeordnet. Der Abnehmer 9 ist entsprechend der Länge der Kardierzone angeordnet. Der Winkel β beträgt im gezeigten Ausführungsbeispiel 15°.Due to the fiber flow within the card, feeding of the fibers from one side of the drum 4 and discharge of the processed fibers on the opposite side of the drum 4, the licker-in 7 is on the side of the fiber feed and the pick-up 9 on the opposite side of the drum 4 arranged. The licker-in 7 is arranged at a certain angle β to a vertical plane 33 through the drum axis 21. The customer 9 is arranged according to the length of the carding zone. The angle β is 15 ° in the exemplary embodiment shown.

Die Bauhöhe 34 welche sich durch die Anordnung von Vorreisser 7, Abnehmer 9 und Wanderdeckelaggregat 6 ergibt, wird auch mitbestimmt durch den Trommeldurchmesser 20 und den Abnehmerdurchmesser 24. Bei einer Anordnung des Vorreissers 7 in der lotrechten Ebene 33 kann auch der Vorreisserdurchmesser 22 einen Einfluss auf die Bauhöhe 34 haben. Die Bauhöhe 34 wirkt sich insbesondere aus auf die Bedienbarkeit der oberhalb der Trommel 4 angeordneten Elemente und sollte deshalb möglichst gering gehalten werden.The overall height 34, which results from the arrangement of licker-in 7, pickup 9 and revolving cover assembly 6, is also determined by the drum diameter 20 and the doffer diameter 24. When the licker-in 7 is arranged in the vertical plane 33, the licker-in diameter 22 can also have an influence have a height of 34. The overall height 34 affects in particular the operability of the elements arranged above the drum 4 and should therefore be kept as low as possible.

In einer besonders bevorzugten Ausführung der Wanderdeckelkarde 1 hat die Trommel 4 einen Durchmesser 20 von 1180 mm, der Vorreisser 7 einen Durchmesser 22 von 250 mm und der Abnehmer 9 einen Durchmesser 24 von 680 mm. Der Vorreisser 7 ist mit einem Winkel β von 12° gegen die lotrechte Ebene 33 angeordnet und die Neigung des Faserzuführungskanals 3 beträgt 24°. Die Vorreisserebene 26 und die Abnehmerebene 27 schliessen einen Winkel α von 307°, dadurch ergibt sich eine Kardierlänge von 3160 mm.In a particularly preferred embodiment of the revolving flat card 1, the drum 4 has a diameter 20 of 1180 mm, the licker-in 7 a diameter 22 of 250 mm and the customer 9 a diameter 24 of 680 mm. The licker-in 7 is arranged at an angle β of 12 ° against the vertical plane 33 and the inclination of the fiber feed channel 3 is 24 °. The licker-in level 26 and the customer level 27 close an angle α of 307 °, which results in a carding length of 3160 mm.

LegendeLegend

11
WanderdeckelkardeCard with revolving flats
22nd
FüllschachtFilling shaft
33rd
FaserzuführungskanalFiber feed channel
44th
Trommeldrum
55
MaschinengestellMachine frame
66
WanderdeckelaggregatRevolving lid aggregate
77
VorreisserRunaway
88th
FaserabnehmersystemFiber pickup system
99
Abnehmercustomer
1010th
FaserbandSliver
1111
FaserbandablageSliver storage
1212th
WanderdeckelRevolving cover
1313
EndlosbandEndless belt
2020th
TrommeldurchmesserDrum diameter
2121
TrommelachseDrum axis
2222
VorreisserdurchmesserLicker diameter
2323
VorreisserachseLickerin axis
2424th
AbnehmerdurchmesserCustomer diameter
2525th
AbnehmerachseCustomer axis
2626
VorreisserebenePioneer level
2727
AbnehmerebeneCustomer level
2828
TrommeloberflächeDrum surface
2929
TrommeldrehrichtungDrum direction of rotation
3030th
FasertransportrichtungDirection of fiber transport
3131
VorkardierzonePrecarding zone
3232
NachkardierzonePostcarding zone
3333
Lotrechte EbeneVertical level
3434
BauhöheOverall height
αα
Winkel Vorreisserebene zu AbnehmerebeneAngle of the licker-in level to the customer level
ββ
Winkel VorreisserebeneLicker-in angle
γγ
Winkel WanderdeckelaggregatAngle revolving lid aggregate

Claims (8)

  1. A revolving flat card (1) for processing fibers,
    - including a cylinder (4) having a cylinder axis (21), a cylinder diameter (20), a cylinder surface (28), and a cylinder rotational direction (29), and
    - including a licker-in (7), having a licker-in axis (23) and a licker-in diameter (22), situated on the circumference of the cylinder (4), and
    - including a doffer (9), having a doffer axis (25) and a doffer diameter (24), situated on the circumference of the cylinder (4), and
    - including a revolving flat unit (6) situated on the circumference of the cylinder (4),
    - wherein a fiber transport direction (30) is determined by the cylinder rotational direction (29) in the direction from the licker-in (7) to the doffer (9), and
    - wherein the revolving flat unit (6) is situated between the licker-in (7) and the doffer (9), and is situated after the licker-in (7), viewed in the fiber transport direction (30), and
    - wherein a precarding zone (31) is situated between the licker-in (7) and the revolving flat unit (6), and a postcarding zone (32) is formed between the revolving flat unit (6) and the doffer (9),
    - wherein the cylinder axis (21) and the licker-in axis (23) lie in a licker-in plane (26), and the cylinder axis (21) and the doffer axis (25) lie in a doffer plane (27), and
    - wherein a carding length is determined by a partial circumference of the cylinder surface (28) between the licker-in plane (26) and the doffer plane (27) in the fiber transport direction (30),
    characterized in that
    - the carding length is greater than 3000 mm,
    - the licker-in plane (26) and the doffer plane (27), starting from the licker-in plane (26) viewed in the fiber transport direction (30), enclose an angle (α) of greater than 305°, and
    - the licker-in plane (26) in the fiber transport direction (30) encloses an angle (β) of 0° to 20° with respect to a perpendicular plane (33) through the cylinder axis (21).
  2. The revolving flat card (1) according to Claim 1, characterized in that the carding length is greater than 3100 mm.
  3. The revolving flat card (1) according to one of the preceding claims, characterized in that the cylinder diameter (20) is between 1150 and 1250 mm, preferably 1180 mm.
  4. The revolving flat card (1) according to one of the preceding claims, characterized in that the precarding zone (31) and the postcarding zone (32) have the same length with respect to the cylinder surface (28).
  5. The revolving flat card (1) according to one of the preceding claims, characterized in that the doffer diameter (24) is 50% to 60%, preferably 58%, of the cylinder diameter (20).
  6. The revolving flat card (1) according to one of the preceding claims, characterized in that the licker-in diameter (22) is 18% to 25%, preferably 22%, of the cylinder diameter (20).
  7. The revolving flat card (1) according to one of the preceding claims, characterized in that the licker-in plane (26) in the fiber transport direction (30) encloses an angle (β) of 5° to 15° with respect to a perpendicular plane (33) through the cylinder axis (21).
  8. The revolving flat card (1) according to one of the preceding claims, characterized in that a fiber supply channel (3) having an inclination of 10° to 25° is provided.
EP16194072.1A 2015-10-27 2016-10-17 Revolving flat card Active EP3162927B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01562/15A CH711685A1 (en) 2015-10-27 2015-10-27 Revolving.

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Publication Number Publication Date
EP3162927A1 EP3162927A1 (en) 2017-05-03
EP3162927B1 true EP3162927B1 (en) 2020-04-22

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EP16194072.1A Active EP3162927B1 (en) 2015-10-27 2016-10-17 Revolving flat card

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EP (1) EP3162927B1 (en)
CH (1) CH711685A1 (en)

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Publication number Priority date Publication date Assignee Title
CN110670178B (en) * 2019-11-05 2024-03-01 恒天重工股份有限公司 Pre-carding impurity removing device for improving impurity removing and carding capabilities of carding machine
DE102022108808A1 (en) 2022-03-16 2023-09-21 Trützschler Group SE card
WO2023174588A1 (en) 2022-03-16 2023-09-21 Trützschler Group SE Carding machine

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Publication number Priority date Publication date Assignee Title
EP0866153B2 (en) * 1997-02-24 2004-11-24 Maschinenfabrik Rieter Ag High performance carding machine
EP0989213B2 (en) * 1998-09-04 2006-03-29 Maschinenfabrik Rieter Ag Carding machine respectively woolen carding machine
ITBS20110073A1 (en) * 2011-05-20 2012-11-21 Marzoli Spa CARDING MACHINE FOR A SPINNING PREPARATION LINE
CN203451683U (en) * 2012-07-04 2014-02-26 朗维机械有限公司 Device used for process fibers and carding machine

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EP3162927A1 (en) 2017-05-03
CH711685A1 (en) 2017-04-28

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