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EP1020125A2 - Apparatus for forming an enlarged flux of tobacco fibres - Google Patents

Apparatus for forming an enlarged flux of tobacco fibres Download PDF

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Publication number
EP1020125A2
EP1020125A2 EP99125292A EP99125292A EP1020125A2 EP 1020125 A2 EP1020125 A2 EP 1020125A2 EP 99125292 A EP99125292 A EP 99125292A EP 99125292 A EP99125292 A EP 99125292A EP 1020125 A2 EP1020125 A2 EP 1020125A2
Authority
EP
European Patent Office
Prior art keywords
guideway
tobacco
slot nozzles
sliding surface
fiber stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99125292A
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German (de)
French (fr)
Other versions
EP1020125A3 (en
EP1020125B1 (en
Inventor
Uwe Heitmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
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Filing date
Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP1020125A2 publication Critical patent/EP1020125A2/en
Publication of EP1020125A3 publication Critical patent/EP1020125A3/en
Application granted granted Critical
Publication of EP1020125B1 publication Critical patent/EP1020125B1/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod

Definitions

  • the invention relates to a device for generating a spread fiber stream from tobacco fibers along one with in the transport direction of the fiber stream acting concave curved guideway.
  • a guideway of the type mentioned is part of a so-called Distributor of a cigarette rod machine, and forms using essentially blowing air directed in parallel is a so-called fluid bed, with the help of tobacco fibers in the form of a loosened up loosely moving along the guideway and spread tobacco flow to a tobacco fiber to a tobacco rod constructing suction strand conveyor are transferred.
  • the invention is based on the task, the effectiveness or the delivery rate of the fluidized bed with regard to the energy expenditure for the blown air supplied optimize.
  • the goal is to consider the guideway that forms the fluidized bed to improve production, handling and interchangeability or installation and removal.
  • the generatrix of the guideway interrupted by the blast air openings designed as slot nozzles is based on a uniform envelope curve.
  • the slot nozzles opening into the sliding surface of the guideway extend continuously over the width of the guideway.
  • a close-fitting wall flow is achieved according to an advantageous embodiment in that the downstream wall of the slot nozzle merges into the concave sliding surface of the guideway in a constant convex curvature with respect to the direction of conveyance of the fiber stream.
  • a further improvement and improvement of the fluid bed conveyance consists in the fact that the sliding surface of the guideway is interrupted by several slot nozzles which follow one another in the conveying direction of the fiber stream.
  • the slot nozzles are expediently connected to a common pressure chamber.
  • the guideway consist of individual segments is composed, the respective adjacent boundary surfaces of the nozzle walls of the slot nozzles.
  • the guideway can be flexible designed and assembled or replaced in some areas due to wear always with an optimal relative alignment of sliding surface walls and slot nozzles is guaranteed.
  • the advantage achieved by the invention consists in the stepless transition at the sections of the guideway interrupted by a slot nozzle, so that the tobacco meets the blown air directly at the outlet of the slot nozzle, that is to say at a point where the blown air still has its maximum flow velocity and can accelerate the tobacco fibers accordingly. So that the blown air supply can then be operated with a lower air pressure or with a correspondingly reduced fan output, which improves the effectiveness and economy of energy generation and use. Furthermore, there is an economic advantage due to the use of individual segments assembled to form the guideway, the simple outer contour of which makes them virtually predestined for production using the economical extrusion process.
  • FIG. 1 shows a section through the part of a distributor of a cigarette rod machine, which is necessary for understanding the invention.
  • the upstream Tobacco supply to a supply and the removal of the tobacco from the tobacco supply, for example, with a steep conveyor are widely known and do not need any here Description. Reference is made, for example, to US Pat. No. 4,185,644.
  • FIG. 1 shows a storage chute 1 with a tobacco supply 1 a and a removal device 2, which consists of a removal roller 3 and a beater roller 4.
  • the shower 6 of tobacco fibers removed from the storage chute by the removal device 2 enters a feed chute which narrows in the shape of a funnel and in the form of a channel 7, in which an accelerating means 8, which forms a presupering device, in the form of blowing nozzles 11 arranged in a pressure chamber 9, a visual air flow transverse to the conveying direction of the Tobacco shower 6 blows.
  • the visible air flow separates the light tobacco fibers 12 from the heavier tobacco fibers 13 (tobacco ribs) and transports them transversely in the direction of the arrow 14.
  • Some light tobacco fibers 12a sink down with the heavier tobacco ribs 13. You get through a rotary valve 16 into a viewing shaft 17, in which the heavier tobacco ribs 13 sink further down and are discharged, while the lighter tobacco fibers 12a rise due to the injector effect of a blast air jet from a nozzle 18 forming a re-sifter and into the stream of lighter fibers 12 are returned.
  • the tobacco fibers in the example shown are transferred to a guideway 21 in the form of a sliding surface 21a, on which they are built up to a tobacco stream 22 of loosened and spreading tobacco fibers, whereby blowing air and tobacco particles form a close to the sliding surface Form a wall flow along the guide track 21.
  • a guideway 21 in the form of a sliding surface 21a, on which they are built up to a tobacco stream 22 of loosened and spreading tobacco fibers, whereby blowing air and tobacco particles form a close to the sliding surface Form a wall flow along the guide track 21.
  • the loosened and spread tobacco stream 22 arrives in a strand build-up zone 24 to a suction strand conveyor 26, to which a suction draft for forming and holding a tobacco strand is applied from the rear by the suction effect of a vacuum chamber 27. Excess blown air escapes through a sieve 28 into a relaxation space 29.
  • the suction line conveyor 26 runs in a tobacco channel 31 which is laterally delimited by two channel cheeks 32 and 32a.
  • the end section of the sliding surface 21a of the guide track 21 is aligned with one of the channel cheeks 32, so that a seamless, smooth transition of the guide track 21 to the tobacco channel 31 is ensured.
  • the end section of the guideway 21 is designed as a guide body 34 which can be swiveled about a pivot axis 33 in order to ensure better accessibility of the device in the event of faults.
  • the guideway 21 formed in a conventional manner according to FIG. 2 consists of the sliding surface 21a in the conveying direction (arrow 36) of the tobacco flow in stages offset sliding plates or sliding bodies 37, at their respective stages the blowing air nozzles 23 open into the guideway 21.
  • the generatrix of the guideway 21 is based on a uniform envelope curve, so that individual segments 38 of the guideway 21 connect to one another in a stepless manner.
  • Blown air nozzles 23 are formed on the respective abutting edges of the individual segments 38 and are formed as continuous slot nozzles perpendicular to the plane of the drawing that an unbroken continuous wall flow of blown air and tobacco is formed on the sliding surface 21.
  • Tobacco flow and blown air meet directly in the area of the outlet opening of the slot nozzles, so that the blown air hits the tobacco stream at its maximum outlet speed at each slot nozzle.
  • the individual segments 38 are produced as extruded profiles, the adjacent boundary surfaces of which always guarantee optimal flow conditions of the slot nozzles.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

A method for handling a stream of tobacco fibres as a concave guide track (21) assembled from segments (38) separated by slits (23) through which air is blown. The slits are angled in the direction of the tobacco flow and create an air layer on which the fibres are supported. The air layer produces an improved distribution of the fibres and provides a flow into a suction line leading to the next process.

Description

Die Erfindung betrifft eine Vorrichtung zum Erzeugen eines ausgebreiteten Faserstromes aus Tabakfasern entlang einer mit in Transportrichtung des Faserstromes wirkenden Blasluftöffnungen versehenen, konkav gekrümmten Führungsbahn.The invention relates to a device for generating a spread fiber stream from tobacco fibers along one with in the transport direction of the fiber stream acting concave curved guideway.

Eine Führungsbahn der eingangs genannten Art ist Bestandteil eines sogenannten Verteilers einer Zigarettenstrangmaschine, und bildet unter Einsatz von im wesentlichen parallel gerichteter Blasluft ein sogenanntes Fließbett, mit dessen Hilfe Tabakfasern in Form eines dicht an der Führungsbahn entlangbewegten aufgelockerten und ausgebreiteten Tabakstromes zu einem die Tabakfasern zu einem Tabakstrang aufbauenden Saug-Strangförderer überführt werden.A guideway of the type mentioned is part of a so-called Distributor of a cigarette rod machine, and forms using essentially blowing air directed in parallel is a so-called fluid bed, with the help of tobacco fibers in the form of a loosened up loosely moving along the guideway and spread tobacco flow to a tobacco fiber to a tobacco rod constructing suction strand conveyor are transferred.

Der Erfindung liegt die Aufgabe zugrunde, die Wirksamkeit bzw. die Förderleistung des Fließbettes im Hinblick auf den Energieaufwand für die zugeführte Blasluft zu optimieren. The invention is based on the task, the effectiveness or the delivery rate of the fluidized bed with regard to the energy expenditure for the blown air supplied optimize.

Darüber hinaus ist es das Ziel, die das Fließbett bildende Führungsbahn im Hinblick auf Fertigung, Handhabung und Austauschbarkeit bzw. Ein- und Ausbau zu verbessern.In addition, the goal is to consider the guideway that forms the fluidized bed to improve production, handling and interchangeability or installation and removal.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Erzeugende der durch die als Schlitzdüsen ausgebildeten Blasluftöffnungen unterbrochenen Führungsbahn auf einer einheitlichen Hüllkurve basiert.
Zur Optimierung des Förder- und Ausbreitungseffektes wird weiterhin vorgeschlagen, daß die in die Gleitfläche der Führungsbahn mündenden Schlitzdüsen sich durchgehend über die Breite der Führungsbahn erstrecken.
Eine eng anliegende Wandströmung (Coanda-Effekt) wird gemäß einer vorteilhaften Ausgestaltung dadurch erzielt, daß die - bezogen auf die Förderrichtung des Faserstromes - stromabwärtige Wandung der Schlitzdüse in stetiger konvexer Krümmung in die konkave Gleitfläche der Führungsbahn übergeht.
Eine die Fließbettförderung steigernde und vervollkommnende Weiterbildung besteht darin, daß die Gleitfläche der Führungsbahn durch mehrere in Förderrichtung des Faserstromes aufeinanderfolgende Schlitzdüsen unterbrochen ist.
Zweckmäßigerweise stehen die Schlitzdüsen mit einer gemeinsamen Druckkammer in Verbindung.This object is achieved in that the generatrix of the guideway interrupted by the blast air openings designed as slot nozzles is based on a uniform envelope curve.
To optimize the conveying and spreading effect, it is further proposed that the slot nozzles opening into the sliding surface of the guideway extend continuously over the width of the guideway.
A close-fitting wall flow (Coanda effect) is achieved according to an advantageous embodiment in that the downstream wall of the slot nozzle merges into the concave sliding surface of the guideway in a constant convex curvature with respect to the direction of conveyance of the fiber stream.
A further improvement and improvement of the fluid bed conveyance consists in the fact that the sliding surface of the guideway is interrupted by several slot nozzles which follow one another in the conveying direction of the fiber stream.
The slot nozzles are expediently connected to a common pressure chamber.

Gemäß einer bevorzugten Ausgestaltung von selbständigem erfinderischen Rang wird weiterhin vorgeschlagen, daß die Führungsbahn aus einzelnen Segmenten zusammengesetzt ist, deren jeweils benachbarte Begrenzungsflächen Düsenwandungen der Schlitzdüsen bilden. Auf diese Weise kann die Führungsbahn flexibel gestaltet und zusammengesetzt bzw. in Teilbereichen verschleißbedingt ersetzt werden, wobei immer eine optimale relative Ausrichtung von Gleitflächenwandungen und Schlitzdüsen gewährleistet ist. According to a preferred embodiment of independent inventive rank it is further proposed that the guideway consist of individual segments is composed, the respective adjacent boundary surfaces of the nozzle walls of the slot nozzles. In this way, the guideway can be flexible designed and assembled or replaced in some areas due to wear always with an optimal relative alignment of sliding surface walls and slot nozzles is guaranteed.

Die vorteilhaften Wirkungen der Segmentbauweise der Führungsbahn werden durch eine herstellungsspezifische Weiterbildung noch dadurch gesteigert, daß die Führungsbahn-Segemente als Strangpreßprofile ausgebildet sind, deren die Gleitfläche der Führungsbahn begrenzende Wandabschnitte - bezogen auf die Förderrichtung des Faserstromes - eine stromaufwärtige und eine stromabwärtige Düsenwandung an zwei aufeinanderfolgenden Schlitzdüsen bilden.The beneficial effects of the segment construction of the guideway will be through a production-specific training even more so that the Guideway segments are designed as extruded profiles, the sliding surface wall sections delimiting the guideway - in relation to the conveying direction of the fiber stream - an upstream and a downstream nozzle wall form on two successive slot nozzles.

Der mit der Erfindung erzielte Vorteil besteht im stufenlosen Übergang an den durch eine Schlitzdüse unterbrochenen Abschnitten der Führungsbahn, so daß der Tabak unmittelbar am Auslaß der Schlitzdüse mit der Blasluft zusammentrifft, daß heißt an einer Stelle, an der die Blasluft noch ihre maximale Strömungsgeschwindigkeit aufweist und die Tabakfasern entsprechend beschleunigen kann. Damit dann die Blasluftzufuhr mit niedrigerem Luftdruck bzw. mit entsprechend reduzierter Lüfterleistung betrieben werden, was die Effektivität und die Wirtschaftlichkeit der Energieerzeugung und des Energieeinsatzes verbessert.
Des weiteren ergibt sich ein herstellungsbedingter wirtschaftlicher Vorteil durch die Verwendung einzelner zur Führungsbahn zusammengesetzter Segmente, deren einfache Außenkontur sie für die Herstellung im wirtschaftlichen Strangpreßverfahren geradezu prädestiniert. The advantage achieved by the invention consists in the stepless transition at the sections of the guideway interrupted by a slot nozzle, so that the tobacco meets the blown air directly at the outlet of the slot nozzle, that is to say at a point where the blown air still has its maximum flow velocity and can accelerate the tobacco fibers accordingly. So that the blown air supply can then be operated with a lower air pressure or with a correspondingly reduced fan output, which improves the effectiveness and economy of energy generation and use.
Furthermore, there is an economic advantage due to the use of individual segments assembled to form the guideway, the simple outer contour of which makes them virtually predestined for production using the economical extrusion process.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is described below using an exemplary embodiment shown in the drawing explained in more detail.

Hierbei zeigen:

Figur 1
einen schematischen Längsschnitt durch einen Verteiler einer Zigarettenstrangmaschine,
Figur 2
einen vergrößerten Ausschnitt des Verteilers mit einer herkömmlichen Führungsbahn für den Tabak und
Figur 3
eine in erfindungsgemäßer Weise ausgebildete Führungsbahn des Verteilers.
Here show:
Figure 1
2 shows a schematic longitudinal section through a distributor of a cigarette rod machine,
Figure 2
an enlarged section of the distributor with a conventional track for tobacco and
Figure 3
a guide track of the distributor designed in accordance with the invention.

Figur 1 zeigt einen Schnitt durch den Teil eines Verteilers einer Zigarettenstrangmaschine, der für das Verständnis der Erfindung erforderlich ist. Die vorgeschaltete Tabakzufuhr zu einem Vorrat und die Entnahme des Tabaks aus dem Tabakvorrat, zum Beispiel mit einem Steilförderer sind vielfältig bekannt und bedürfen hier keiner Beschreibung. Hingewiesen wird dazu beispielsweise auf die US-PS 4 185 644.FIG. 1 shows a section through the part of a distributor of a cigarette rod machine, which is necessary for understanding the invention. The upstream Tobacco supply to a supply and the removal of the tobacco from the tobacco supply, for example, with a steep conveyor are widely known and do not need any here Description. Reference is made, for example, to US Pat. No. 4,185,644.

Figur zeigt einen Stauschacht 1 mit einem Tabakvorrat 1a und einer Entnahmevorrichtung 2, welche aus einer Entnahmewalze 3 und einer Schlägerwalze 4 besteht. Der von der Entnahmevorrichtung 2 aus dem Stauschacht entnommene Schauer 6 aus Tabakfasern gelangt in einen sich trichterförmig verengenden Zuführfallschacht in Form eines Kanals 7, in dem ein einen Vorsichter bildendes Beschleunigungsmittel 8 in Form von in einer Druckkammer 9 angeordneten Blasdüsen 11 einen Sichtluftstrom quer zur Förderrichtung des Tabakschauers 6 bläst. Der Sichtluftstrom trennt die leichten Tabakfasern 12 von den schwereren Tabakfasern 13 (Tabakrippen) und fördert sie quer in Richtung des Pfeils 14 ab.
Einige leichte Tabakfasern 12a sinken mit den schwereren Tabakrippen 13 nach unten. Sie gelangen durch eine Zellenradschleuse 16 in einen Sichtschacht 17, in dem die schwereren Tabakrippen 13 weiter nach unten sinken und ausgetragen werden, während die leichteren Tabakfasern 12a infolge der Injektorwirkung eines Blasluftstrahls aus einer einen Nachsichter bildenden Düse 18 nach oben steigen und in den Strom der leichteren Fasern 12 zurückgeführt werden. Mit Unterstützung weiterer Blasluftdüsen 19 einer Druckkammer 19a werden die Tabakfasern im dargestellten Beispiel auf eine Führungsbahn 21 in Gestalt einer Gleitfläche 21a überführt, auf der sie zu einem Tabakstrom 22 aufgelockerter und ausgebreiteter Tabakfasern aufgebaut werden, wobei sich Blasluft und Tabakpartikel zu einer dicht an der Gleitfläche 21a der Führungsbahn 21 entlangbewegten Wandströmung ausbilden. Zur Unterstützung der weiteren Förderung des ausgebreiteten und aufgelokkerten Tabakstroms 22 an der Führungsbahn 21 entlang sind Blasluftdüsen 23 einer Druckkammer 23a sowie gegebenenfalls weitere im Verlauf der Führungsbahn 21 angeordnete, in der Zeichnung aber nicht dargestellte Blasluftdüsen vorgesehen.
Der aufgelockerte und ausgebreitete Tabakstrom 22 gelangt in einer Strangaufbauzone 24 zu einem Saugstrangförderer 26, an den durch die Saugwirkung einer Unterdruckkammer 27 von der Rückseite her ein Saugzug zum Bilden und Halten eines Tabakstranges angelegt ist. Überschüssige Blasluft entweicht durch ein Sieb 28 in einen Entspannungsraum 29.
Der Saugstrangförderer 26 läuft in einem Tabakkanal 31 um, der von zwei Kanalwangen 32 und 32a seitlich begrenzt ist. Der Endabschnitt der Gleitfläche 21a der Führungsbahn 21 ist auf eine der Kanalwangen 32 ausgerichtet, so daß ein lückenloser, glatter Übergang der Führungsbahn 21 zum Tabakkanal 31 gewährleistet ist. Der Endabschnitt der Führungsbahn 21 ist als um eine Schwenkachse 33 abschwenkbarer Leitkörper 34 ausgebildet, um eine bessere Zugänglichkeit der Vorrichtung bei Störungen zu gewährleisten.Figure shows a storage chute 1 with a tobacco supply 1 a and a removal device 2, which consists of a removal roller 3 and a beater roller 4. The shower 6 of tobacco fibers removed from the storage chute by the removal device 2 enters a feed chute which narrows in the shape of a funnel and in the form of a channel 7, in which an accelerating means 8, which forms a presupering device, in the form of blowing nozzles 11 arranged in a pressure chamber 9, a visual air flow transverse to the conveying direction of the Tobacco shower 6 blows. The visible air flow separates the light tobacco fibers 12 from the heavier tobacco fibers 13 (tobacco ribs) and transports them transversely in the direction of the arrow 14.
Some light tobacco fibers 12a sink down with the heavier tobacco ribs 13. You get through a rotary valve 16 into a viewing shaft 17, in which the heavier tobacco ribs 13 sink further down and are discharged, while the lighter tobacco fibers 12a rise due to the injector effect of a blast air jet from a nozzle 18 forming a re-sifter and into the stream of lighter fibers 12 are returned. With the support of further blowing air nozzles 19 of a pressure chamber 19a, the tobacco fibers in the example shown are transferred to a guideway 21 in the form of a sliding surface 21a, on which they are built up to a tobacco stream 22 of loosened and spreading tobacco fibers, whereby blowing air and tobacco particles form a close to the sliding surface Form a wall flow along the guide track 21. To support the further conveyance of the spread and loosened tobacco stream 22 along the guideway 21, there are blown air nozzles 23 of a pressure chamber 23a and optionally further blown air nozzles arranged in the course of the guideway 21 but not shown in the drawing.
The loosened and spread tobacco stream 22 arrives in a strand build-up zone 24 to a suction strand conveyor 26, to which a suction draft for forming and holding a tobacco strand is applied from the rear by the suction effect of a vacuum chamber 27. Excess blown air escapes through a sieve 28 into a relaxation space 29.
The suction line conveyor 26 runs in a tobacco channel 31 which is laterally delimited by two channel cheeks 32 and 32a. The end section of the sliding surface 21a of the guide track 21 is aligned with one of the channel cheeks 32, so that a seamless, smooth transition of the guide track 21 to the tobacco channel 31 is ensured. The end section of the guideway 21 is designed as a guide body 34 which can be swiveled about a pivot axis 33 in order to ensure better accessibility of the device in the event of faults.

Bei der gemäß Figur 2 in herkömmlicher Weise ausgebildeten Führungsbahn 21 besteht die Gleitfläche 21a aus in Förderrichtung (Pfeil 36) des Tabakstromes stufenweise abgesetzten Gleitblechen bzw. Gleitkörpern 37, an deren jeweiligen Stufen die Blasluftdüsen 23 in die Führungsbahn 21 einmünden. Diese Ausbildung hat zur Folge, daß der Tabakstrom im Bereich der jeweiligen Stufe zwischen zwei Gleitblechen 37 erst am Ende einer relativ langen freien Flugbahn mit dem aus den Blasluftdüsen 23 austretenden Luftstrom zusammentrifft, nachdem der Luftstrom bereits etwa zwei Drittel seiner Austrittsgeschwindigkeit eingebüßt hat. Um zu erreichen, daß der Tabakstrom auf einen vorgegebenen Wert beschleunigt wird, muß die Strömungsgeschwindigkeit der Blasluft durch eine größere Lüfterleistung erhöht werden, was die Wirtschaftlichkeit beeinträchtigt. In the guideway 21 formed in a conventional manner according to FIG. 2 consists of the sliding surface 21a in the conveying direction (arrow 36) of the tobacco flow in stages offset sliding plates or sliding bodies 37, at their respective stages the blowing air nozzles 23 open into the guideway 21. Has this training the consequence that the tobacco flow in the range of the respective stage between two Sliding plates 37 only at the end of a relatively long free trajectory with the Blowing air nozzles 23 exiting airflow meets after the airflow has already lost about two thirds of its exit speed. To achieve, that the tobacco flow is accelerated to a predetermined value must the flow speed of the blown air is increased by a larger fan power what affects the economy.

Bei der gemäß Figur 3 in erfindungsgemäßer Weise gestalteten Anordnung basiert die Erzeugende der Führungsbahn 21 auf einer einheitlichen Hüllkurve, so daß einzelne Segmente 38 der Führungsbahn 21 stufenlos aneinander anschließen. An den jeweiligen Stoßkanten der einzelnen Segmente 38 werden als senkrecht zur Zeichenebene durchgehende Schlitzdüsen ausgebildete Blasluftdüsen 23 gebildet, deren -bezogen auf die Förderrichtung (Pfeil 36) des Faserstromes - stromabwärtige Wandung in stetiger konvexer Krümmung in die konkave Gleitfläche 21a der Führungsbahn 21 übergeht, so daß eine abrißlose kontinuierliche Wandströmung von Blasluft und Tabak an der Gleitfläche 21 gebildet wird. Tabakstrom und Blasluft treffen unmittelbar im Bereich der Austrittsöffnung der Schlitzdüsen zusammen, so daß an jeder Schlitzdüse die Blasluft mit ihrer maximalen Austrittsgeschwindigkeit auf den Tabakstrom trifft.
Die einzelnen Segmente 38 werden als Strangpreßprofile herstellt, deren jeweils benachbarte Begrenzungsflächen immer optimale Strömungsverhältnisse der Schlitzdüsen garantieren.In the arrangement designed according to the invention in accordance with FIG. 3, the generatrix of the guideway 21 is based on a uniform envelope curve, so that individual segments 38 of the guideway 21 connect to one another in a stepless manner. Blown air nozzles 23 are formed on the respective abutting edges of the individual segments 38 and are formed as continuous slot nozzles perpendicular to the plane of the drawing that an unbroken continuous wall flow of blown air and tobacco is formed on the sliding surface 21. Tobacco flow and blown air meet directly in the area of the outlet opening of the slot nozzles, so that the blown air hits the tobacco stream at its maximum outlet speed at each slot nozzle.
The individual segments 38 are produced as extruded profiles, the adjacent boundary surfaces of which always guarantee optimal flow conditions of the slot nozzles.

Claims (7)

Vorrichtung zum Erzeugen eines ausgebreiteten Faserstromes aus Tabakfasern entlang einer mit in Transportrichtung des Faserstromes wirkenden Blasluftöffnungen versehenen, konkav gekrümmten Führungsbahn, dadurch gekennzeichnet, daß die Erzeugende der durch die als Schlitzdüsen ausgebildeten Blasluftöffnungen (23) unterbrochenen Führungsbahn (21) auf einer einheitlichen Hüllkurve basiert.Device for generating a spread fiber stream from tobacco fibers along a blowing air opening acting in the transport direction of the fiber stream provided, concave curved guideway, characterized, that the generatrix of the blown air openings designed as slot nozzles (23) interrupted guideway (21) is based on a uniform envelope. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die in die Gleitfläche (21a) der Führungsbahn (21) mündenden Schlitzdüsen (23) sich durchgehend über die Breite der Führungsbahn erstecken.Device according to claim 1, characterized in that the in the sliding surface (21a) of the guideway (21) opening slot nozzles (23) continuously cover the width of the guideway. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die - bezogen auf die Förderrichtung (Pfeil 36) des Faserstromes (22) - stromabwärtige Wandung der Schlitzdüse (23) in stetiger konvexer Krümmung in die konkave Gleitfläche (21a) der Führungsbahn (21) übergeht.Device according to claim 1 or 2, characterized in that the - related on the conveying direction (arrow 36) of the fiber stream (22) - downstream Wall of the slot nozzle (23) in a constant convex curvature in the concave sliding surface (21a) passes over the guideway (21). Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Gleitfläche (21a) der Führungsbahn (21) durch mehrere in Förderrichtung (Pfeil 36) des Faserstromes (22) aufeinanderfolgende Schlitzdüsen (23) unterbrochen ist.Device according to one of claims 1 to 3, characterized in that that the sliding surface (21a) of the guide track (21) by several in the conveying direction (Arrow 36) of the fiber stream (22) successive slot nozzles (23) interrupted is. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schlitzdüsen (23) mit einer gemeinsamen Druckkammer (23a) in Verbindung stehen.Device according to one of claims 1 to 4, characterized in that that the slot nozzles (23) with a common pressure chamber (23a) in connection stand. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Führungsbahn (21) aus einzelnen Segmenten (38) zusammengesetzt ist, deren jeweils benachbarte Begrenzungsflächen Düsenwandungen der Schlitzdüsen (23) bilden.Device according to one of claims 1 to 5, characterized in that that the guideway (21) is composed of individual segments (38) is, the respectively adjacent boundary surfaces nozzle walls of the slot nozzles (23) form. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Führungsbahn-Segemente (38) als Strangpreßprofile ausgebildet sind, deren die Gleitfläche (21a) der Führungsbahn (21) begrenzende Wandabschnitte - bezogen auf die Förderrichtung (Pfeil 36) des Faserstromes (22) - eine stromaufwärtige und eine stromabwärtige Düsenwandung an zwei aufeinanderfolgenden Schlitzdüsen (23) bilden.Device according to claim 6, characterized in that the guideway segments (38) are designed as extruded profiles, the sliding surface (21a) of the guideway (21) delimiting wall sections - based on the conveying direction (Arrow 36) of the fiber stream (22) - one upstream and one downstream nozzle wall at two successive slot nozzles (23) form.
EP99125292A 1999-01-14 1999-12-18 Apparatus for forming an enlarged flux of tobacco fibres Expired - Lifetime EP1020125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19901087A DE19901087A1 (en) 1999-01-14 1999-01-14 Device for generating a spread fiber stream from tobacco fibers
DE19901087 1999-01-14

Publications (3)

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EP1020125A2 true EP1020125A2 (en) 2000-07-19
EP1020125A3 EP1020125A3 (en) 2005-04-13
EP1020125B1 EP1020125B1 (en) 2006-08-02

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ID=7894178

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Application Number Title Priority Date Filing Date
EP99125292A Expired - Lifetime EP1020125B1 (en) 1999-01-14 1999-12-18 Apparatus for forming an enlarged flux of tobacco fibres

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US (1) US6701933B2 (en)
EP (1) EP1020125B1 (en)
JP (1) JP4287968B2 (en)
CN (1) CN1144538C (en)
AT (1) ATE334605T1 (en)
DE (2) DE19901087A1 (en)
ES (1) ES2267221T3 (en)
PL (1) PL192182B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174046A3 (en) * 2000-07-20 2003-12-03 Hauni Maschinenbau AG Method and device for separating tobacco fibres

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2499853C (en) * 2004-03-15 2012-11-13 Universal Leaf Tobacco Company, Inc. Apparatus and method for scanning and sorting tobacco leaves
US8281931B2 (en) * 2009-09-18 2012-10-09 Key Technology, Inc. Apparatus and method for post-threshing inspection and sorting of tobacco lamina

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Publication number Priority date Publication date Assignee Title
DE2729730C2 (en) 1976-09-24 1986-11-13 Hauni-Werke Körber & Co KG, 2050 Hamburg Distributor of a rod machine for the manufacture of smoking articles
US4306358A (en) * 1979-08-15 1981-12-22 Amf Incorporated Air drying apparatus
IT1167017B (en) * 1982-12-02 1987-05-06 Hauni Werke Koerber & Co Kg DEVICE TO FORM A LIST OF TOBACCO
IT1244317B (en) * 1989-11-25 1994-07-08 Koerber Ag PROCEDURE AND DEVICE TO PRODUCE A LIST OF TOBACCO
DE4113465A1 (en) * 1991-04-25 1992-10-29 Heidelberger Druckmasch Ag DEVICE FOR FLOATING GUIDING AND / OR PROMOTING RAILWAYS OR ARCHES
DE4336453A1 (en) * 1993-10-26 1995-04-27 Hauni Werke Koerber & Co Kg Method and device for separating tobacco fibers
JP3431716B2 (en) * 1995-02-16 2003-07-28 日本たばこ産業株式会社 Chopped tobacco feeder for cigarette making machine
JPH1086329A (en) * 1996-09-03 1998-04-07 Heidelberger Druckmas Ag Apparatus for guiding sheet without contact for sheet-feed printer
DE19913422A1 (en) * 1999-03-25 2000-09-28 Hauni Maschinenbau Ag Device for transferring filter rods containing powdered or granular particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174046A3 (en) * 2000-07-20 2003-12-03 Hauni Maschinenbau AG Method and device for separating tobacco fibres

Also Published As

Publication number Publication date
US20020162561A1 (en) 2002-11-07
CN1260150A (en) 2000-07-19
US6701933B2 (en) 2004-03-09
ES2267221T3 (en) 2007-03-01
PL337684A1 (en) 2000-07-17
EP1020125A3 (en) 2005-04-13
JP2000210068A (en) 2000-08-02
DE59913731D1 (en) 2006-09-14
EP1020125B1 (en) 2006-08-02
PL192182B1 (en) 2006-09-29
CN1144538C (en) 2004-04-07
JP4287968B2 (en) 2009-07-01
ATE334605T1 (en) 2006-08-15
DE19901087A1 (en) 2000-07-20

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