EP1033082A1 - Apparatus for making a continuous tobacco rod - Google Patents

Apparatus for making a continuous tobacco rod Download PDF

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Publication number
EP1033082A1
EP1033082A1 EP00103566A EP00103566A EP1033082A1 EP 1033082 A1 EP1033082 A1 EP 1033082A1 EP 00103566 A EP00103566 A EP 00103566A EP 00103566 A EP00103566 A EP 00103566A EP 1033082 A1 EP1033082 A1 EP 1033082A1
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EP
European Patent Office
Prior art keywords
suction
strand
conveyor
pressure plate
air duct
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
EP00103566A
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German (de)
French (fr)
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EP1033082B1 (en
Inventor
Henning Thiele
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Koerber Technologies GmbH
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Hauni Maschinenbau GmbH
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Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP1033082A1 publication Critical patent/EP1033082A1/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
    • A24C5/1807—Forming the rod with compressing means, e.g. garniture
    • 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
    • A24C5/1857—Belt construction or driving means

Definitions

  • the invention relates to a device for building a continuous Tobacco rod, with a along a construction line with a suction chamber in Actively connected suction line conveyor, which is in the line inlet area a format device forming the tobacco rod into a wrapped cigarette rod passed around a press disk rotating with the suction strand conveyor is.
  • individualized and loosened tobacco fibers are usually piled up on a rod conveyor in the form of an endless conveyor belt rotating in a tobacco channel to a fiber strand which is continuously conveyed out of the strand building area and equalized before it is moved onto a belt with a circulating format belt into a format device
  • the wrapping material strip is deposited and wrapped in the format device with the wrapping material strip, for example a cigarette paper strip.
  • the wrapping material strip which is initially just arriving in the infeed area of the format device, is first shaped U-shaped around the fiber strand as it passes through the format device before it is completely wrapped around the strand and, to form a cylindrical sheath along an overlap seam, generally by gluing around the strand is closed.
  • An air-permeable fabric belt is usually used as the strand conveyor, in which tobacco particles from the strand can adhere and detach at another point due to the negative pressure applied or due to the mechanical pressure when the fiber strand is compressed, so that a proper transfer of all particles of the strand into the format device is prevented.
  • this device has a device for stripping tobacco particles, a so-called scraper, at its inlet end.
  • This device consists of a base body and has one Scraper edge, which is positioned close to the surface of the strand conveyor and wipes the tobacco particles of the strand from the strand conveyor.
  • the invention has for its object the functional reliability of such with regard to a better strand formation optimized belt deflection as well to increase their service life.
  • the pressure disk is delimited in the region of a wrap-free circumferential section by an air channel which is in flow connection on the one hand with the inner storage space of the pressure disk and on the other hand with the suction chamber.
  • the pressure plate is cleaned equally on all inner and outer dust-depositing surfaces by a permanent suction.
  • the inner surfaces are best achieved by the suction according to a further development in that the flow connection to the storage space of the pressure plate is established by air slots emerging on both sides at the peripheral edge of the pressure plate, which are expediently designed in the form of at least eight radial edge slots.
  • an even more effective dust collection and dust extraction is achieved according to a further proposal in that the thrust link block below the openings in the air duct opening in the side walls is provided with a scraper-like particle retention wedge which engages between the lower peripheral portion of the press disk and the suction line conveyor.
  • a defined dedusting zone is achieved in that the air duct, which runs essentially concentrically to the pressure plate, extends between the lower retaining wedge of the thrust block and an upper scraper connected to the thrust block and placed against the pressure plate. The dedusting of the storage space of the press disk is further facilitated in that the end faces of the press disk have openings.
  • the advantage achieved with the invention is that by a permanent Dedusting or keeping the particularly sensitive functional areas free of dust, especially the bearing points and the belt guide surface of the press disk, on the one hand, their long-term operational safety is maintained in full load operation and along with this, in the long term, secure tape guidance and thus one Increasing the belt life is guaranteed.
  • the invention is based on an embodiment shown in the drawing explained in more detail.
  • the format inlet of a cigarette rod machine is shown. It shows the discharge end of a suction strand conveyor 1 designed as an air-permeable endless conveyor belt and part of a format device 2 with a format bed 3 indicated by dash-dotted lines and an inlet finger 4.
  • the suction strand conveyor 1 rotates in the direction of arrow 6 in a tobacco channel 7 and conveys a fiber strand made of tobacco fibers (not shown) from a strand build-up zone (also not shown) for delivery to a format device 2.
  • a format belt 13 is guided in the direction of the arrow 12 and carries a strip of wrapping material 14 through the format device 2.
  • This technique of such machines is well known, so that a detailed description and description is not necessary here.
  • the suction strand conveyor 1 converges to the strand guiding surface 9 of the format bed 3 and places the tobacco strand, which has been shaken up in a strand construction zone (not shown) and leveled in the usual way, on the wrapping material strips 14 moved by the format device 2.
  • the tobacco rod is passed through the inlet cone 11 strongly compressed under the action of the suction strand conveyor 1 and deformed in accordance with the cross-sectional change of the inlet cone in the conveying direction 12 of the format belt 13 so that it can enter the strand channel partially enclosed by the strand guide surface 9 of the format bed 3.
  • the entry finger 4 is arranged as a further strand guide means with a scraper 16, which together with the strand guide surface 9 of the format bed 3 forms a strand guide that further compresses and forms the fiber strand.
  • the scraper 16 is attached to the end of the inlet finger 4 of the format device 2.
  • the underside is designed as a strand guide surface 17 and, in the installed position of the scraper, is opposite the strand guide surface 9 of the format bed 3, so that both strand guide surfaces 9 and 17 enclose a strand guide channel.
  • the strand guide surface 17 is concavely curved and aligned with a subsequent strand guide surface 18, which is formed on the underside of the inlet finger 4. This configuration of the strand guide surfaces causes the incoming tobacco rod to be deformed in a known manner into a cylindrical fiber strand while at the same time enveloping this fiber strand with the wrapping material strip 14.
  • the suction strand conveyor 1 is guided at its discharge end around a press disk 19 set in rotation by the suction strand conveyor 1, the entire discharge end and the press disk 19 being covered by side walls embodied as knife strips 21, which extend underneath along the strand guide surface 9 in Format bed 3 extend.
  • a so-called thrust link block 22 is inserted between the two knife bars 21 for guiding the suction strand conveyor 1 and is engaged with a scraper-like retaining wedge 23 at a distance in the tenths of a millimeter range in the lower gusset formed between the pressure disc 19 and the suction strand conveyor 1 against the pressure disc 19.
  • the upper side of the push-track block 22 is equipped with a scraper 24 placed against the circumferential surface of the pressure plate 19.
  • the thrust link block 22 is provided with a recess in the form of an air duct 26 which, in an approximately concentric course to the pressing disk, has its free circumferential section of the pressing disk 19 running between the upper and lower run of the suction strand conveyor 1 between the scraper 24 and the retaining wedge 23 limited.
  • the air duct 26 is connected on the one hand to the suction chamber 8 and on the other hand to the inner storage space 27 of the pressure plate 19.
  • the pressure plate 19 is provided with a total of eight radial air slots 28 emerging on both sides at its peripheral edge, so that a flow connection between the storage space 27 of the pressure plate 19 and the suction chamber 8 in the area of the air duct 26 when the air slots 28 released by the suction line conveyor 1 pass will be produced.
  • openings 29 are also provided in the end wall of the pressure plate 19 and in the two male strips 21 in the region of the lower end of the air duct 26 openings 31.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

A suction -conveyor (1) for the length of tobacco operates in conjunction with a suction chamber (8). The conveyor, at the entry part of a formatting appliance (2) molding the length of tobacco into a length of rolled cigarettes, is guided round a compression disc (19) turning with the suction-conveyor. The compression disc, where the section of the periphery is free of wrapping, is defined by an air-duct (26) connected with the inner storage space (27) of the compression disc, and with the suction chamber.

Description

Die Erfindung betrifft eine Vorrichtung zum Aufbauen eines kontinuierlichen Tabakstranges, mit einem entlang einer Aufbaustrecke mit einer Saugkammer in Wirkverbindung stehenden Saugstrangförderer, welcher im Strangeinlaufbereich einer den Tabakstrang zu einem umhüllten Zigarettenstrang formenden Formateinrichtung um eine mit dem Saugstrangförderer umlaufende Preßscheibe herumgeführt ist.The invention relates to a device for building a continuous Tobacco rod, with a along a construction line with a suction chamber in Actively connected suction line conveyor, which is in the line inlet area a format device forming the tobacco rod into a wrapped cigarette rod passed around a press disk rotating with the suction strand conveyor is.

Zum Herstellen eines Zigarettenstrangs werden gewöhnlich vereinzelte und aufgelockerte Tabakfasern auf einem in einem Tabakkanal umlaufenden Strangförderer in Form eines Endlos-Förderbandes zu einem Faserstrang aufgeschauert, der kontinuierlich aus dem Strangaufbaubereich abgefördert und egalisiert wird, bevor er auf einen mit einem umlaufenden Formatband in eine Formateinrichtung bewegten Hüllmaterialstreifen abgelegt und in der Formateinrichtung mit dem Hüllmaterialstreifen, zum Beispiel einem Zigarettenpapierstreifen, umhüllt wird. Der im Einlaufbereich der Formateinrichtung zunächst noch eben einlaufende Hüllmaterialstreifen wird beim Durchgang durch die Formateinrichtung zunächst U-förmig um den Faserstrang geformt, bevor er ganz um den Strang herumgelegt und zur Bildung einer zylindrischen Hülle entlang einer Überlappungsnaht in der Regel durch Verkleben um den Strang herum geschlossen wird.
Als Strangförderer wird gewöhnlich ein luftdurchlässiges Gewebeband eingesetzt, in dem sich durch den angelegten Unterdruck oder infolge des mechanischen Drucks beim Komprimieren des Faserstrangs Tabakpartikel aus dem Strang festsetzen und an anderer Stelle wieder ablösen können, so daß eine ordnungsgemäße Übergabe aller Teilchen des Strangs in die Formateinrichtung verhindert wird. Um sicherzustellen, daß alle Teilchen des Strangs, auch solche, die sich am Strangförderer festgesetzt haben, in die Formateinrichtung abgegeben werden, weist diese an ihrem Einlaufende eine Vorrichtung zum Abstreifen von Tabakteilchen, einen sogenannten Schaber, auf Dieser besteht aus einem Grundkörper und weist eine Abstreifkante auf, die dicht an der Oberfläche des Strangförderers positioniert ist und die Tabakteilchen des Strangs vom Strangförderer abstreift.
Um die kritische Übergabezone des Tabakstranges vom oberen Saugstrangförderer auf den mit dem Formatband zugeführten unteren, in das Format einlaufenden Zigarettenpapierstreifen zu entschärfen, sollte sie möglichst kurz bemessen sein bzw. sich möglichst dicht am Formateinlauf erstrecken.
Gute Ergebnisse werden mit einer möglichst kleinen, den Saugstrangförderer umlenkenden Preßscheibe erzielt, die einerseits hohe Fliehkräfte zur besseren Ablösung des Tabakstranges erzeugt und andererseits eine optimale Anstellung und Ausbildung eines dem Saugstrangförderer zugeordneten Schabers erlaubt.To produce a cigarette rod, individualized and loosened tobacco fibers are usually piled up on a rod conveyor in the form of an endless conveyor belt rotating in a tobacco channel to a fiber strand which is continuously conveyed out of the strand building area and equalized before it is moved onto a belt with a circulating format belt into a format device The wrapping material strip is deposited and wrapped in the format device with the wrapping material strip, for example a cigarette paper strip. The wrapping material strip, which is initially just arriving in the infeed area of the format device, is first shaped U-shaped around the fiber strand as it passes through the format device before it is completely wrapped around the strand and, to form a cylindrical sheath along an overlap seam, generally by gluing around the strand is closed.
An air-permeable fabric belt is usually used as the strand conveyor, in which tobacco particles from the strand can adhere and detach at another point due to the negative pressure applied or due to the mechanical pressure when the fiber strand is compressed, so that a proper transfer of all particles of the strand into the format device is prevented. In order to ensure that all particles of the strand, including those that have attached themselves to the strand conveyor, are released into the format device, this device has a device for stripping tobacco particles, a so-called scraper, at its inlet end. This device consists of a base body and has one Scraper edge, which is positioned close to the surface of the strand conveyor and wipes the tobacco particles of the strand from the strand conveyor.
In order to defuse the critical transfer zone of the tobacco rod from the upper suction line conveyor to the lower cigarette paper strips that are fed into the format with the format belt, it should be as short as possible or extend as close as possible to the format inlet.
Good results are achieved with the smallest possible pressing disk deflecting the suction line conveyor, which on the one hand generates high centrifugal forces for better detachment of the tobacco rod and on the other hand allows optimal adjustment and formation of a scraper assigned to the suction line conveyor.

Hingegen ist eine relativ eng bemessene Bandumlenkung extrem empfindlich gegen den in diesem Bereich zwangsläufig anfallenden Tabakstaub, der zerstörend auf die Lagerung einer derartigen Preßscheibe einwirkt und sich auf der Scheibenumfangsfläche ablagert, so daß das Förderband abgehoben wird und durch den Schaber zerstört werden kann. On the other hand, a relatively narrow belt deflection is extremely sensitive against the tobacco dust that inevitably arises in this area, which is destructive acts on the bearing of such a press washer and on the disk peripheral surface deposits, so that the conveyor belt is lifted and by the Scraper can be destroyed.

Der Versuch, durch die Anstellung eines Schabers Staubablagerungen von der Scheibenumfangsfläche zu entfernen, hat zu keinen befriedigenden Ergebnissen geführt.Trying to remove dust from the dust by placing a scraper Removing the peripheral surface of the pane has unsatisfactory results guided.

Der Erfindung liegt die Aufgabe zugrunde, die Funktionssicherheit einer derartigen im Hinblick auf eine bessere Strangbildung optimierten Bandumlenkung sowie deren Standzeit zu erhöhen.The invention has for its object the functional reliability of such with regard to a better strand formation optimized belt deflection as well to increase their service life.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Preßscheibe im Bereich eines umschlingungsfreien Umfangsabschnitts durch einen einerseits mit dem inneren Lagerraum der Preßscheibe und andererseits mit der Saugkammer in Strömungsverbindung stehenden Luftkanal begrenzt ist.
Auf diese Weise wird die Preßscheibe gleichermaßen an allen inneren und äußeren staubablagernden Flächen durch einen permanent wirkenden Saugzug gereinigt. Die inneren Flächen werden durch den Saugzug gemäß einer Weiterbildung am besten dadurch erreicht, daß die Strömungsverbindung zum Lagerraum der Preßscheibe durch beidseitig am Umfangsrand der Preßscheibe austretende Luftschlitze hergestellt wird, welche zweckmäßigerweise in Form von wenigstens acht Radial-Randschlitzen ausgebildet sind.
Gewöhnlich ist das Förderband kurz vor seinem Umlauf um die Preßscheibe an einem feststehenden Schubstreckenklotz entlanggeführt, welcher gemäß einer Weiterbildung dazu genutzt wird, den Luftkanal durch eine Ausnehmung in dem den Saugstrangförderer führenden Schubstreckenklotz zu bilden.
Die Effektivität des Luftkanals wird gemäß einer Weiterbildung dadurch optimiert, daß er seitlich durch als Messerleisten ausgebildetete Seitenwände begrenzt ist, welche Durchbrechungen aufweisen, die den Luftkanal mit der Atmosphäre verbinden. This object is achieved according to the invention in that the pressure disk is delimited in the region of a wrap-free circumferential section by an air channel which is in flow connection on the one hand with the inner storage space of the pressure disk and on the other hand with the suction chamber.
In this way, the pressure plate is cleaned equally on all inner and outer dust-depositing surfaces by a permanent suction. The inner surfaces are best achieved by the suction according to a further development in that the flow connection to the storage space of the pressure plate is established by air slots emerging on both sides at the peripheral edge of the pressure plate, which are expediently designed in the form of at least eight radial edge slots.
The conveyor belt is usually guided shortly before it rotates around the pressure disk along a fixed thrust block, which according to a further development is used to form the air channel through a recess in the thrust block leading the suction line conveyor.
According to a further development, the effectiveness of the air duct is optimized in that it is laterally delimited by side walls designed as knife strips, which have openings which connect the air duct with the atmosphere.

Eine noch effektivere Stauberfassung und Staubabsaugung wird nach einem weiteren Vorschlag dadurch erreicht, daß der Schubstreckenklotz unterhalb der in den Luftkanal einmündenden Durchbrechungen der Seitenwände mit einem in den zwischen dem unteren Umfangsabschnitt der Preßscheibe und dem Saugstrangförderer gebildeten Zwickel eingreifenden schaberartigen Partikel-Rückhaltekeil versehen ist.
Eine definierte Entstaubungszone wird nach einem weiteren Vorschlag dadurch erreicht, daß der im wesentlichen konzentrisch zur Preßscheibe verlaufende Luftkanal sich zwischen dem unteren Rückhaltekeil des Schubstreckenklotzes und einem oberen mit dem Schubstreckenklotz verbundenen, gegen die Preßscheibe angestellten Schaber erstreckt. Die Entstaubung des Lagerraumes der Preßscheibe wird noch dadurch erleichtert, daß die Stirnflächen der Preßscheibe Durchbrechungen aufweisen.An even more effective dust collection and dust extraction is achieved according to a further proposal in that the thrust link block below the openings in the air duct opening in the side walls is provided with a scraper-like particle retention wedge which engages between the lower peripheral portion of the press disk and the suction line conveyor.
According to a further proposal, a defined dedusting zone is achieved in that the air duct, which runs essentially concentrically to the pressure plate, extends between the lower retaining wedge of the thrust block and an upper scraper connected to the thrust block and placed against the pressure plate. The dedusting of the storage space of the press disk is further facilitated in that the end faces of the press disk have openings.

Der mit der Erfindung erzielte Vorteil besteht darin, daß durch eine permanente Entstaubung bzw. Staubfreihaltung der besonders sensiblen Funktionsbereiche, insbesondere der Lagerstellen und der Bandführungsfläche der Preßscheibe, einerseits deren Betriebssicherheit im Vollastbetrieb langfristig erhalten bleibt und damit einhergehend langfristig auch eine sichere Bandführung und somit eine Erhöhung der Bandstandzeit gewährleistet ist. The advantage achieved with the invention is that by a permanent Dedusting or keeping the particularly sensitive functional areas free of dust, especially the bearing points and the belt guide surface of the press disk, on the one hand, their long-term operational safety is maintained in full load operation and along with this, in the long term, secure tape guidance and thus one Increasing the belt life is guaranteed.

Die Erfindung wird anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is based on an embodiment shown in the drawing explained in more detail.

Hierbei zeigen:

Figur 1
Ausschnittweise eine Strangfördereinheit einer Zigarettenstrangmaschine,
Figur 2
einen Querschnitt durch eine erfindungsgemäße Preßscheibe der Strangfördereinheit entlang der Linie A-A gemäß Figur 1 und
Figur 3
eine perspektivische Ansicht der Preßscheibe.
Here show:
Figure 1
A section of a line conveyor unit of a cigarette rod machine,
Figure 2
a cross section through a press disk according to the invention of the extrusion conveyor unit along the line AA according to Figure 1 and
Figure 3
a perspective view of the pressure plate.

In Figur 1 ist der Formateinlauf einer Zigarettenstrangmaschine dargestellt. Sie zeigt das Abgabeende eines als luftdurchlässiges Endlos-Förderband ausgbildeten Saugstrangförderers 1 und einen Teil einer Formateinrichtung 2 mit einem strichpunktiert angedeuteten Formatbett 3 und einem Einlauffinger 4. Der Saugstrangförderer 1 läuft in Pfeilrichtung 6 in einem Tabakkanal 7 um und fördert einen Faserstrang aus Tabakfasern (nicht dargestellt) von einer Strangaufbauzone (ebenfalls nicht dargestellt) zur Abgabe an eine Formateinrichtung 2. Der Faserstrang wird hängend am Saugstrangförderer 1 im Tabakkanal 7 gefördert, wobei er mittels eines durch den Saugstrangförderer 1 hindurchwirkenden Saugzugs aus einer den Saugstrangförderer umschließenden Saugkammer 8 am Saugstrangförderer gehalten wird. Das Formatbett 3 weist gemäß Figur 2 eine Strangführungsfläche 9 auf, die einen im Querschnitt gewölbten Strangkanal bildet, dessen Wölbungsradius in Laufrichtung des Strangs vom Einlaufkonus 11 zum Formatteil hin kontinuierlich abnimmt und der in einen entsprechend der gewünschten Strangform ausgebildeten, nicht weiter dargestellten Strangkanal der Formateinrichtung 2 mündet. Im Einlaufkonus 11 entlang der Strangführungsfläche 9 und in dem nicht weiter dargestellten Strangkanal der Formateinrichtung 2 ist ein in Pfeilrichtung 12 umlaufendes Formatband 13 geführt, das einen Hüllmaterialstreifen 14 durch die Formateinrichtung 2 trägt. Diese Technik derartiger Maschinen ist hinlänglich bekannt, so daß eine nähere Darstellung und Beschreibung hier nicht erforderlich ist. Im Bereich des Einlaufkonus 11 konvergiert der Saugstrangförderer 1 zur Strangführungsfläche 9 des Formatbetts 3 und legt den in einer nicht dargestellten Strangaufbauzone aufgeschauerten und in üblicher Weise egalisierten Tabakstrang auf den durch die Formateinrichtung 2 bewegten Hüllmaterialstreifen 14 auf Dabei wird der Tabakstrang bei seiner Passage durch den Einlaufkonus 11 unter der Wirkung des Saugstrangförderers 1 stark komprimiert und entsprechend der Querschnittsveränderung des Einlaufkonus in Förderrichtung 12 des Formatbandes 13 so verformt, daß er in den teilweise von der Strangführungsfläche 9 des Formatbettes 3 umschlossenen Strangkanal einlaufen kann. Im Bereich der Strangführungsfläche 9 ist dem Formatbett 3 benachbart als weiteres Strangführungsmittel der Einlauffinger 4 mit einem Schaber 16 angeordnet, der zusammen mit der Strangführungsfläche 9 des Formatbettes 3 eine den Faserstrang weiter komprimierende und formende Strangführung bildet.
Der Schaber 16 ist stirnseitig am Einlauffinger 4 der Formateinrichtung 2 befestigt. Seine Unterseite ist als Strangführungsfläche 17 ausgebildet und liegt in der Einbauposition des Schabers der Strangführungsfläche 9 des Formatbettes 3 gegenüber, so daß beide Strangführungsflächen 9 und 17 einen Strangführungskanal einschließen. Die Strangführungsfläche 17 ist dabei konkav gewölbt und fluchtet mit einer anschließenden Strangführungsfläche 18, die an der Unterseite des Einlauffingers 4 ausgebildet ist. Diese Ausbildung der Strangführungsflächen bewirkt in bekannter Weise das Verformen des ankommenden Tabakstrangs zu einem zylindrischen Faserstrang bei gleichzeitiger Umhüllung dieses Faserstrangs mit dem Hüllmaterialstreifen 14.
Im Bereich des Formateinlaufes ist der Saugstrangförderer 1 an seinem Abgabeende um eine durch den Saugstrangförderer 1 in Umdrehung versetzte Preßscheibe 19 herumgeführt, wobei das gesamte Abgabeende und die Preßscheibe 19 durch als Messerleisten 21 ausgebildete Seitenwände abgedeckt ist, die sich unterseitig bis entlang der Strangführungsfläche 9 im Formatbett 3 erstrecken. Zwischen den beiden Messerleisten 21 ist zur Führung des Saugstrangförderers 1 ein sogenannter Schubstreckenklotz 22 eingefügt, der mit einem schaberartigen Rückhaltekeil 23 mit einem Abstand im zehntel Millimeterbereich in dem zwischen der Preßscheibe 19 und dem Saugstrangförderer 1 gebildeten unteren Zwickel gegen die Preßscheibe 19 angestellt ist. Oberseitig ist der Schubstreckenklotz 22 mit einem gegen die Umfangsfläche der Preßscheibe 19 angestellten Schaber 24 ausgestattet. Oberhalb des Rückhaltekeils 23 ist der Schubstreckenklotz 22 mit einer Ausnehmung in Form eines Luftkanals 26 versehen, welcher in einem etwa konzentrischen Verlauf zur Preßscheibe deren zwischen dem Ober- und Untertrum des Saugstrangförderers 1 verlaufenden freien Umfangsabschnitt der Preßscheibe 19 zwischen dem Schaber 24 und dem Rückhaltekeil 23 begrenzt. Der Luftkanal 26 steht einerseits mit der Saugkammer 8 und andererseits mit dem inneren Lagerraum 27 der Preßscheibe 19 in Verbindung. Zu diesem Zweck ist die Preßscheibe 19 mit insgesamt acht beidseitig an ihrem Umfangsrand austretenden radialen Luftschlitzen 28 versehen, so daß beim Vorbeilauf der durch den Saugstrangförderer 1 freigegebenen Luftschlitze 28 im Bereich des Luftkanals 26 eine Strömungsverbindung zwischen dem Lagerraum 27 der Preßscheibe 19 und der Saugkammer 8 hergestellt wird. Zur Effektivitätssteigerung der Saugströmung sind außerdem Durchbrechungen 29 in der Stirnwand der Preßscheibe 19 sowie in den beiden Messerleisten 21 jeweils im Bereich des unteren Endes des Luftkanals 26 Durchbrechungen 31 vorgesehen. Durch die auf diese Weise erzeugte permanente Saugluftströmung von der Preßscheibe 19 zur Saugkammer 8 werden Staubpartikel, die vom Schaber 24 nicht erfaßt und abgenommen werden konnten von der Umfangsfläche der Preßscheibe 19 abgesaugt, so daß sich kein Tabakstaub zwischen der Umfangsfläche der Preßscheibe 19 und dem Saugstrangförderer ansammeln und zum Auftragen des Saugstrangförderers führen kann und somit eine Beschädigung des Saugstrangförderers 1 durch den Schaber 17 verhindert wird. Gleichzeitig werden durch die Passage des Luftkanals durch die Luftschlitze 28 Staubablagerungen im Lagerraum 27 der Preßscheibe 19 unterbunden, so daß langfristig Lagerschäden verhindert werden.In Figure 1, the format inlet of a cigarette rod machine is shown. It shows the discharge end of a suction strand conveyor 1 designed as an air-permeable endless conveyor belt and part of a format device 2 with a format bed 3 indicated by dash-dotted lines and an inlet finger 4. The suction strand conveyor 1 rotates in the direction of arrow 6 in a tobacco channel 7 and conveys a fiber strand made of tobacco fibers (not shown) from a strand build-up zone (also not shown) for delivery to a format device 2. The fiber strand is conveyed hanging on the suction strand conveyor 1 in the tobacco duct 7, being held on the suction strand conveyor by means of a suction pull acting through the suction strand conveyor 1 from a suction chamber 8 surrounding the suction strand conveyor . According to FIG. 2, the format bed 3 has a strand guide surface 9, which forms a strand channel which is curved in cross section, the radius of curvature of which continuously decreases in the running direction of the strand from the inlet cone 11 to the format part, and the strand channel of the format device which is designed in accordance with the desired strand shape and is not shown further 2 flows. In the inlet cone 11 along the strand guide surface 9 and in the strand channel of the format device 2, which is not shown in any more detail, a format belt 13 is guided in the direction of the arrow 12 and carries a strip of wrapping material 14 through the format device 2. This technique of such machines is well known, so that a detailed description and description is not necessary here. In the area of the inlet cone 11, the suction strand conveyor 1 converges to the strand guiding surface 9 of the format bed 3 and places the tobacco strand, which has been shaken up in a strand construction zone (not shown) and leveled in the usual way, on the wrapping material strips 14 moved by the format device 2. The tobacco rod is passed through the inlet cone 11 strongly compressed under the action of the suction strand conveyor 1 and deformed in accordance with the cross-sectional change of the inlet cone in the conveying direction 12 of the format belt 13 so that it can enter the strand channel partially enclosed by the strand guide surface 9 of the format bed 3. In the area of the strand guide surface 9, adjacent to the format bed 3, the entry finger 4 is arranged as a further strand guide means with a scraper 16, which together with the strand guide surface 9 of the format bed 3 forms a strand guide that further compresses and forms the fiber strand.
The scraper 16 is attached to the end of the inlet finger 4 of the format device 2. Its underside is designed as a strand guide surface 17 and, in the installed position of the scraper, is opposite the strand guide surface 9 of the format bed 3, so that both strand guide surfaces 9 and 17 enclose a strand guide channel. The strand guide surface 17 is concavely curved and aligned with a subsequent strand guide surface 18, which is formed on the underside of the inlet finger 4. This configuration of the strand guide surfaces causes the incoming tobacco rod to be deformed in a known manner into a cylindrical fiber strand while at the same time enveloping this fiber strand with the wrapping material strip 14.
In the area of the format inlet, the suction strand conveyor 1 is guided at its discharge end around a press disk 19 set in rotation by the suction strand conveyor 1, the entire discharge end and the press disk 19 being covered by side walls embodied as knife strips 21, which extend underneath along the strand guide surface 9 in Format bed 3 extend. A so-called thrust link block 22 is inserted between the two knife bars 21 for guiding the suction strand conveyor 1 and is engaged with a scraper-like retaining wedge 23 at a distance in the tenths of a millimeter range in the lower gusset formed between the pressure disc 19 and the suction strand conveyor 1 against the pressure disc 19. The upper side of the push-track block 22 is equipped with a scraper 24 placed against the circumferential surface of the pressure plate 19. Above the retaining wedge 23, the thrust link block 22 is provided with a recess in the form of an air duct 26 which, in an approximately concentric course to the pressing disk, has its free circumferential section of the pressing disk 19 running between the upper and lower run of the suction strand conveyor 1 between the scraper 24 and the retaining wedge 23 limited. The air duct 26 is connected on the one hand to the suction chamber 8 and on the other hand to the inner storage space 27 of the pressure plate 19. For this purpose, the pressure plate 19 is provided with a total of eight radial air slots 28 emerging on both sides at its peripheral edge, so that a flow connection between the storage space 27 of the pressure plate 19 and the suction chamber 8 in the area of the air duct 26 when the air slots 28 released by the suction line conveyor 1 pass will be produced. To increase the effectiveness of the suction flow, openings 29 are also provided in the end wall of the pressure plate 19 and in the two male strips 21 in the region of the lower end of the air duct 26 openings 31. Due to the permanent suction air flow generated in this way from the pressure plate 19 to the suction chamber 8, dust particles which could not be grasped and removed by the scraper 24 are sucked off from the peripheral surface of the pressure plate 19, so that no tobacco dust is present between the peripheral surface of the pressure plate 19 and the suction line conveyor can accumulate and lead to application of the suction strand conveyor and thus damage to the suction strand conveyor 1 by the scraper 17 is prevented. At the same time 28 dust deposits in the storage space 27 of the pressure plate 19 are prevented by the passage of the air channel through the air slots, so that long-term bearing damage is prevented.

Claims (8)

Vorrichtung zum Aufbauen eines kontinuierlichen Tabakstranges, mit einem entlang einer Aufbaustrecke mit einer Saugkammer in Wirkverbindung stehenden Saugstrangförderer, welcher im Strangeinlaufbereich einer den Tabakstrang zu einem umhüllten Zigarettenstrang formenden Formateinrichtung um eine mit dem Saugstrangförderer umlaufende Preßscheibe herumgeführt ist, dadurch gekennzeichnet, daß die Preßscheibe (19) im Bereich eines umschlingungsfreien Umfangsabschnitts durch einen einerseits mit dem inneren Lagerraum (27) der Preßscheibe und andererseits mit der Saugkammer (8) in Strömungsverbindung stehenden Luftkanal (26) begrenzt ist.Device for building up a continuous tobacco rod, with a are operatively connected along a construction route with a suction chamber Suction line conveyor, which in the line inlet area to the tobacco line an encased cigarette rod format device by one with the Suction-line conveyor circumferential pressure disc is guided, characterized in that that the pressure plate (19) in the region of a wrap-free peripheral section by one with the inner storage space (27) of the press disk and on the other hand in flow connection with the suction chamber (8) Air duct (26) is limited. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Strömungsverbindung zum Lagerraum (27) der Preßscheibe (19) durch beidseitig am Umfangsrand der Preßscheibe austretende Luftschlitze (28) hergestellt wird.Device according to claim 1, characterized in that the flow connection to the storage space (27) of the pressure plate (19) through on both sides on the peripheral edge the air slots (28) emerging from the press disk. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Luftschlitze (28) in Form von wenigstens acht Radial-Randschlitzen ausgebildet sind.Device according to claim 2, characterized in that the air slots (28) in the form of at least eight radial edge slots. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Luftkanal (26) durch eine Ausnehmung in einem den Saugstrangförderer (1) führenden Schubstreckenklotz (22) gebildet wird.Device according to one of claims 1 to 3, characterized in that that the air duct (26) through a recess in the suction line conveyor (1) leading thrust block (22) is formed. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Luftkanal (26) seitlich durch als Messerleisten ausgebildete Seitenwände (21) begrenzt ist, welche Durchbrechungen (31) aufweisen, die den Luftkanal mit der Atmosphäre verbinden. Device according to one of claims 1 to 4, characterized in that that the air duct (26) laterally through side walls designed as knife strips (21) is limited, which have openings (31) that the air duct with connect the atmosphere. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Schubstreckenklotz (22) unterhalb der in den Luftkanal (26) einmündenden Durchbrechungen (31) der Seitenwände (21) mit einem in den zwischen dem unteren Umfangsabschnitt der Preßscheibe (19) und dem Saugstrangförderer (1) gebildeten Zwickel eingreifenden schaberartigen Partikel-Rückhaltekeil (23) versehen ist.Device according to one of claims 1 to 5, characterized in that that the thrust block (22) below the opening in the air duct (26) Openings (31) of the side walls (21) with one in between the lower Circumferential portion of the pressure plate (19) and the suction strand conveyor (1) formed Gusset-engaging scraper-like particle retention wedge (23) is. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der im wesentlichen konzentrisch zur Preßscheibe (19) verlaufende Luftkanal (26) sich zwischen dem unteren Rückhaltekeil (23) des Schubstreckenklotzes (22) und einem oberen mit dem Schubstreckenklotz verbundenen, gegen die Preßscheibe angestellten Schaber (24) erstreckt.Device according to one of claims 1 to 6, characterized in that that the air channel runs essentially concentrically to the pressure plate (19) (26) between the lower retaining wedge (23) of the pusher block (22) and an upper one connected to the pusher block against the pressure disc hired scraper (24) extends. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Stirnflächen der Preßscheibe (19) Durchbrechungen (31) aufweisen.Device according to one of claims 1 to 7, characterized in that that the end faces of the pressure plate (19) have openings (31).
EP00103566A 1999-03-03 2000-02-19 Apparatus for making a continuous tobacco rod Expired - Lifetime EP1033082B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909216 1999-03-03
DE19909216A DE19909216A1 (en) 1999-03-03 1999-03-03 Device for building up a continuous tobacco rod

Publications (2)

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EP1033082A1 true EP1033082A1 (en) 2000-09-06
EP1033082B1 EP1033082B1 (en) 2003-05-07

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US (1) US6321756B1 (en)
EP (1) EP1033082B1 (en)
JP (1) JP4521740B2 (en)
CN (1) CN1138487C (en)
AT (1) ATE239390T1 (en)
DE (2) DE19909216A1 (en)
ES (1) ES2194637T3 (en)
PL (1) PL190749B1 (en)

Cited By (2)

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EP2417861A1 (en) * 2010-08-09 2012-02-15 HAUNI Maschinenbau AG Device and method for conveying a strand for the tobacco industry
EP2430929A1 (en) * 2010-09-17 2012-03-21 HAUNI Maschinenbau AG Device and method for manufacturing a continuous strand for the tobacco industry

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
ATE552741T1 (en) * 2006-12-28 2012-04-15 Philip Morris Prod PRODUCTION OF A TOBACCO STICK HAVING A HOLLOW CYLINDER-SHAPED THROUGH TUBE
DE102011100365A1 (en) * 2010-06-29 2011-12-29 Hauni Maschinenbau Ag Device for producing rod-shaped products of the tobacco-processing industry

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Publication number Priority date Publication date Assignee Title
EP2417861A1 (en) * 2010-08-09 2012-02-15 HAUNI Maschinenbau AG Device and method for conveying a strand for the tobacco industry
CN102372153A (en) * 2010-08-09 2012-03-14 豪尼机械制造股份公司 Device and method for conveying a strand for the tobacco industry
EP2430929A1 (en) * 2010-09-17 2012-03-21 HAUNI Maschinenbau AG Device and method for manufacturing a continuous strand for the tobacco industry

Also Published As

Publication number Publication date
CN1138487C (en) 2004-02-18
DE50002035D1 (en) 2003-06-12
ES2194637T3 (en) 2003-12-01
CN1265858A (en) 2000-09-13
JP4521740B2 (en) 2010-08-11
PL338762A1 (en) 2000-09-11
JP2000245427A (en) 2000-09-12
DE19909216A1 (en) 2000-09-07
EP1033082B1 (en) 2003-05-07
US6321756B1 (en) 2001-11-27
ATE239390T1 (en) 2003-05-15
PL190749B1 (en) 2006-01-31

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