EP0636322B1 - Feeding device for producing an uniform layer - Google Patents

Feeding device for producing an uniform layer Download PDF

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Publication number
EP0636322B1
EP0636322B1 EP94111024A EP94111024A EP0636322B1 EP 0636322 B1 EP0636322 B1 EP 0636322B1 EP 94111024 A EP94111024 A EP 94111024A EP 94111024 A EP94111024 A EP 94111024A EP 0636322 B1 EP0636322 B1 EP 0636322B1
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EP
European Patent Office
Prior art keywords
feed
tobacco
conveyor
installation according
delivery component
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.)
Expired - Lifetime
Application number
EP94111024A
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German (de)
French (fr)
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EP0636322A3 (en
EP0636322A2 (en
Inventor
Friedemann Dr. Roether
Heiko Niehues
Uwe Leckband
Harry Drewes
Horst-Udo Christ
Hans Dierken
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Koerber Technologies GmbH
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Hauni Maschinenbau GmbH
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Publication date
Priority claimed from DE19934325838 external-priority patent/DE4325838A1/en
Priority claimed from DE19934335385 external-priority patent/DE4335385A1/en
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP0636322A2 publication Critical patent/EP0636322A2/en
Publication of EP0636322A3 publication Critical patent/EP0636322A3/en
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24CMACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/39Tobacco feeding devices
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00Preparing tobacco in the factory
    • A24B3/18Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24CMACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/39Tobacco feeding devices
    • A24C5/397Tobacco feeding devices with means for regulating the tobacco quantity

Definitions

  • the invention relates to a conveyor device for generating a further treatment supplied tobacco monolayer from a continuously moving tobacco stream comprehensive funding for supplying the tobacco flow and for separating the Tobacco wedges within the tobacco stream, the funding at least two in Direction of conveyance successive, with different conveying speeds drivable conveyor elements forming a feeder and a removal conveyor have, of which - based on the conveying direction - arranged downstream Ab freelanceelement has a higher conveying speed.
  • Tobacco monolayer in the sense of the invention is to be understood as meaning a tobacco fleece consisting mainly of tobacco parts lying side by side or isolated (strips, ribs and the like obtained by pretreatment).
  • a tobacco monolayer is in many cases a prerequisite for successful further treatment of the tobacco during the course of a work process in preparation for the manufacture of rod-shaped end products in the form of cigarettes, filter cigarettes and the like.
  • Such further processing or processing steps are, for example, the sighting or spraying of the tobacco stream and in particular the scanning or opto-electronic scanning of the tobacco stream in connection with the detection and separation of foreign bodies, which are to be eliminated as early as possible, in order to disrupt the processing process and impair the quality of the Exclude final product.
  • a conveyor device of the type described at the outset is known, for example, from DE-B-1 011 798.
  • a tobacco cutter according to US Pat. No. 4,244,382 it is known to compress a tobacco mass by means of a promotional pressing action between two conveyor belt strands arranged one above the other.
  • a changeable chute configuration is disclosed in US-A-4,457,840.
  • the object of the invention is to create a conveying device which is optimized in relation to its conveying capacity and its distribution and equalization effect.
  • This object is achieved in that the discharge element consists of two conveyor belts forming a conveying channel, arranged on the top and bottom and synchronously drivable in the conveying direction.
  • the feed element located upstream in relation to the conveying direction is designed as an oscillating conveyor.
  • the vibratory conveyor ensures loosening and transverse distribution of tobacco or a solution of tobacco clumps and the faster belt conveyor for stretching the tobacco flow along the conveying direction.
  • the vibratory conveyor is inclined downwards in the conveying direction, the inclination of the vibratory conveyor being adjustable upwards and downwards according to an additional proposal, based on an angle of attack in the size range of approximately 15 °.
  • An additional configuration according to which the vibratory conveyor is provided with a stepped bottom, exerts an additional detaching effect on the components of the tobacco stream that may still adhere to one another.
  • a foreign body separator is expediently arranged at the discharge end of the discharge element.
  • the conveying element which is inclined in the conveying direction is followed by a substantially horizontally running third conveying element which is designed as a conveyor belt and which has an identical or preferably lower conveying speed relative to the conveying element.
  • the advantage achieved by the invention is that the spread of the individual Components of the tobacco flow transversely to the conveying direction as well as the extension of the tobacco fleece formed along the conveying direction to form a tobacco monolayer from adjacent or isolated components a higher tobacco throughput is achieved, in conjunction with a downstream Foreign body cutter the desired sorting result with regard to the type, shape and size of the detected foreign bodies is guaranteed.
  • Funding upstream consists of a first Conveyor element 4 in the form of a vibratory conveyor 6 and a Belt conveyor formed second conveyor element 7 in the form a lower conveyor belt 8 and an upper conveyor belt Conveyor belt 9, which in this way in the conveying direction if necessary, form a converging delivery channel 11 through Side walls 12 is limited and the up and down adjustment of the upper conveyor belt 9 in its clear height is changeable.
  • the conveyor belts 8, 9 operated synchronously with common or own drive means have a higher conveying speed than the vibratory conveyor 6.
  • the vibratory conveyor 6 is provided with a stepped and optionally profiled floor 13 and is inclined downwards in the direction of conveyance (arrow 2) by about 15 ° , whereby the inclination can be adjusted up and down.
  • the entire conveyor element 7 is also set in the conveying direction with a lower inclination of approximately 10 °.
  • 19 with a funding for receiving and removing the tobacco flow 3 freed from foreign bodies 17 and 21 is a funding for collecting and removing the sorted foreign bodies 17.
  • the discharge end of the vibrating conveyor 6 ending above the conveyor belt 8 of the belt conveyor 7 has, in accordance with FIG 24 distributed.
  • the discharge edge delimitation 23 is designed in the form of a discharge fork or is divided into numerous discharge edge sections 27 which are alternately staggered in relation to the conveying direction (arrow 2) and are connected by longitudinal edges 26.
  • the distance between the longitudinal edges of the fork tines is expediently greater than the tine width.
  • the tobacco falls with each forward oscillation of the vibratory conveyor 6 from the front and rear discharge edge sections 27 running parallel to one another transversely to the conveying direction 2 and from the longitudinal edges 26 extending in the conveying direction in the form of a surface distribution on the conveyor belt 8 Quantities of tobacco in the successive forward vibrations of the vibratory conveyor 6 to each other without gaps, so that a virtually closed tobacco monolayer is formed.
  • the discharge edge course or the discharge edge limitation results 323 from a the bottom surface of the vibratory conveyor 6 delimiting outer end edge 331 and several transverse to Conveying direction 302 adjacent openings or Slits 332 in the bottom chute inner chute portions 333.
  • this design with rectangular Slits 332 drop the tobacco on each forward stroke of the vibratory conveyor 306 across the slots across and lengthwise the discharge edge sections 333 and the tobacco moving forward between the slits finally over the end edge 331 onto the conveyor belt 308.
  • the slots 432 have a slightly different or triangular shape Configuration with discharge edges diverging in the conveying direction 434 on which the tobacco within the drop area profile 424 in a slightly different distribution on the conveyor belt 408 reached.
  • the mode of action is as follows:
  • the tobacco which is preferably fed over the full width perpendicular to the plane of the drawing onto the rear end of the vibratory conveyor 6, for example by an upward conveyor, is advanced by the oscillating movement in the direction of the arrow 2, with an additional detaching or separating effect on sheet parts still adhering when passing through the gradations 13 achieved and thus a separation and width distribution of the components of the tobacco flow is supported perpendicular to the plane of the drawing.
  • the tobacco flow is greatly accelerated and stretched in such a way that the sheet material and the foreign bodies 17 are also separated in the conveying direction.
  • the air flow entrained when the tobacco enters the conveying channel 11 creates an additional ventilation effect which ensures accelerated entrainment of the tobacco flow even at relatively high belt speeds of the conveyor belts 8, 9.
  • the tobacco fleece 3 released in this way in the form of a monolayer from the conveyor belt 8 passes the laser detectors 14, which react over the full width (perpendicular to the plane of the drawing) to foreign bodies 17 flying past and emit corresponding signals.
  • the Image processing processor By signaling very specific detectors 14, the Image processing processor also the respective position of the foreign body 17 within the tobacco stream 3 and controls the corresponding Blow-out nozzles 18 for the targeted separation of the recognized foreign body 17. The especially at relative small foreign objects 17 simultaneously with blown tobacco leaves are then sorted out again and in the processing process returned.
  • the variant shown in FIG. 6 differs from the first embodiment only in that the conveying means 107 is followed in the conveying direction 102 by a further, essentially horizontally running conveyor belt 122 which operates to optimize the tobacco monolayer of the tobacco fleece with the same or preferably a lower conveying speed than the conveying means 107 becomes.
  • the conveying means 107 is followed in the conveying direction 102 by a further, essentially horizontally running conveyor belt 122 which operates to optimize the tobacco monolayer of the tobacco fleece with the same or preferably a lower conveying speed than the conveying means 107 becomes.
  • This additional conveyor belt 122 is then the foreign body separator 101 assigned.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Die Erfindung betrifft eine Fördervorrichtung zum Erzeugen einer der Weiterbehandlung zugeführten Tabakmonolage aus einem kontinuierlich bewegten Tabakstrom umfassend Fördermittel zum Zuführen des Tabakstromes sowie zum Vereinzeln der Tabakeile innerhalb des Tabakstromes, wobei die Fördermittel wenigstens zwei in Förderrichtung aufeinanderfolgende, mit unterschiedlichen Fördergeschwindigkeiten antreibbare, einen Anförderer und einen Abförderer bildende Förderelemente aufweisen, von denen das - bezogen auf die Förderrichtung - stromab angeordnete Abförderelement eine höhere Fördergeschwindigkeit aufweist.The invention relates to a conveyor device for generating a further treatment supplied tobacco monolayer from a continuously moving tobacco stream comprehensive funding for supplying the tobacco flow and for separating the Tobacco wedges within the tobacco stream, the funding at least two in Direction of conveyance successive, with different conveying speeds drivable conveyor elements forming a feeder and a removal conveyor have, of which - based on the conveying direction - arranged downstream Abförderelement has a higher conveying speed.

Unter einer

Figure 00010001
Tabakmonolage" ist im erfindungsgemäßen Sinn ein aus überwiegend nebeneinanderliegenden bzw. vereinzelten Tabakteilen (durch Vorbehandlung erhaltene Strips, Rippen und dergleichen) bestehendes Tabakvlies zu verstehen.
Eine derartige Tabakmonolage ist in vielen Fällen Voraussetzung für eine erfolgreiche Weiterbehandlung des Tabaks beim Durchlaufen eines Arbeitsprozesses zur Vorbereitung auf eine Konfektionierung stabförmiger Endprodukte in Form von Zigaretten, Filterzigaretten und dergleichen.
Derartige Weiterbehandlungs- bzw. Bearbeitungsschritte sind beispielsweise das Sichten oder das Besprühen des Tabakstromes und insbesondere das Scannen bzw. opto-elektronische Abtasten des Tabakstromes in Verbindung mit der Erkennung und Abscheidung von Fremdkörpern, die möglichst frühzeitig auszusondern sind, um Störungen im Verarbeitungsprozeß sowie Qualitätsbeeinträchtigungen des Endproduktes auszuschließen.
Bei allen diesen Behandlungsmaßnahmen hängt die Erzielung eines optimalen Arbeitsergebnisses mit einer möglichst gleichmäßigen Ausbreitung der Tabakmonolage eng zusammen.
Insbesondere Blattabak bzw. entrippter Blattabak in Form von sogenannten Strips", die in Form und Größe unter Umständen den Fremdbestandteilen sehr ähneln, stellt besondere Anforderungen fördertechnischer Art im Hinblick auf eine eindeutige Identifizierung derartiger Fremdkörper im bewegten Tabakstrom.Under one
Figure 00010001
Tobacco monolayer "in the sense of the invention is to be understood as meaning a tobacco fleece consisting mainly of tobacco parts lying side by side or isolated (strips, ribs and the like obtained by pretreatment).
Such a tobacco monolayer is in many cases a prerequisite for successful further treatment of the tobacco during the course of a work process in preparation for the manufacture of rod-shaped end products in the form of cigarettes, filter cigarettes and the like.
Such further processing or processing steps are, for example, the sighting or spraying of the tobacco stream and in particular the scanning or opto-electronic scanning of the tobacco stream in connection with the detection and separation of foreign bodies, which are to be eliminated as early as possible, in order to disrupt the processing process and impair the quality of the Exclude final product.
In all of these treatment measures, achieving an optimal work result is closely related to spreading the tobacco monolayer as evenly as possible.
In particular leaf tobacco or stripped leaf tobacco in the form of so-called Strips ", which may be very similar in shape and size to the foreign components, places special demands on conveyor technology with regard to the clear identification of such foreign bodies in the moving tobacco stream.

Eine Fördervorrichtung der eingangs bezeichneten Art ist beispielsweise durch die DE-B-1 011 798 bekannt.
Bei einem Tabakschneider nach der US-A-4 244 382 ist es bekannt, durch eine fördernde Preßwirkung zwischen zwei übereinander angeordneten Förderbandtrumen eine Tabakmasse zu verdichten.
Eine veränderbare Abwurfkantenkonfiguration ist in der US-A-4 457 840 offenbart.
A conveyor device of the type described at the outset is known, for example, from DE-B-1 011 798.
In a tobacco cutter according to US Pat. No. 4,244,382, it is known to compress a tobacco mass by means of a promotional pressing action between two conveyor belt strands arranged one above the other.
A changeable chute configuration is disclosed in US-A-4,457,840.

Der Erfindung liegt die Aufgabe zugrunde, eine, bezogen auf ihre Förderleistung sowie ihren Verteilungs- und Vergleichmäßigungseffekt optimierte Fördervorrichtung zu schaffen. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Abförderelement aus zwei einen Förderkanal bildenden, unter- und oberseitig angeordneten sowie in Förderrichtung synchron antreibbaren Förderbändern besteht.
Gemäß einer zusätzlichen Weiterbildung ist außerdem vorgesehen, daß das - bezogen auf die Förderrichtung - stromauf gelegene Anförderelement als Schwingförderer ausgebildet ist. Bei dieser im Hinblick auf den Durchsatz des Tabakstromes pro Zeiteinheit recht leistungsfähigen Kombination von Fördermitteln, bei der die Fördergeschwindigkeit der Bandfördermittel beispielsweise bis etwa dem Fünffachen der Fördergeschwindigkeit des - bezogen auf die Förderrichtung - stromauf angeordneten Schwingförderers entspricht, sorgt der Schwingförderer für eine Auflockerung und Querverteilung des Tabaks bzw. eine Lösung von Tabakverklumpungen und der schnellere Bandförderer für eine Streckung des Tabakstromes längs der Förderrichtung.
The object of the invention is to create a conveying device which is optimized in relation to its conveying capacity and its distribution and equalization effect. This object is achieved in that the discharge element consists of two conveyor belts forming a conveying channel, arranged on the top and bottom and synchronously drivable in the conveying direction.
According to an additional development, it is also provided that the feed element located upstream in relation to the conveying direction is designed as an oscillating conveyor. With this combination of conveyors, which is quite powerful in terms of the throughput of the tobacco flow per unit of time, in which the conveying speed of the belt conveyors corresponds, for example, to about five times the conveying speed of the vibratory conveyor arranged upstream in relation to the conveying direction, the vibratory conveyor ensures loosening and transverse distribution of tobacco or a solution of tobacco clumps and the faster belt conveyor for stretching the tobacco flow along the conveying direction.

Gemäß weiteren Ausgestaltungen ist der Schwingförderer in Förderrichtung abwärts geneigt, wobei die Neigung des Schwingförderers nach einem zusätzlichen Vorschlag - bezogen auf einen Anstellwinkel im Größenbereich von etwa 15° - nach oben und unten einstellbar ist.
Durch eine zusätzliche Ausgestaltung, gemäß welcher der Schwingförderer mit einem abgestuften Boden versehen ist, wird ein zusätzlicher Löseeffekt auf die unter Umständen noch aneinanderhaftenden Komponenten des Tabakstromes ausgeübt.
According to further refinements, the vibratory conveyor is inclined downwards in the conveying direction, the inclination of the vibratory conveyor being adjustable upwards and downwards according to an additional proposal, based on an angle of attack in the size range of approximately 15 °.
An additional configuration, according to which the vibratory conveyor is provided with a stepped bottom, exerts an additional detaching effect on the components of the tobacco stream that may still adhere to one another.

Zweckmäßigerweise ist am Abgabeende des Abförderelementes ein Fremdkörperabscheider angeordnet.
Nach einer alternativen Ausführungsform der Erfindung folgt auf das in Förderrichtung geneigt verlaufende Abförderelement ein im wesentlichen horizontal verlaufendes, als Förderband ausgebildetes drittes Förderelement, das eine relativ zum Abförderelement gleiche oder vorzugsweise geringere Fördergeschwindigkeit aufweist. Auf diese Weise werden die durch die Streckung des Tabakstromes längs der Förderrichtung entstandenen Abstände zwischen den einzelnen Komponenten des Tabakstromes in der erzielten Tabakmonolage anschließend durch Stauchung wieder verringert, so daß eine optimale, nahezu geschlossene Tabakmonolage entsteht, die mit relativ hoher Durchsatzgeschwindigkeit den Fremdkörperabscheider passiert.
A foreign body separator is expediently arranged at the discharge end of the discharge element.
According to an alternative embodiment of the invention, the conveying element which is inclined in the conveying direction is followed by a substantially horizontally running third conveying element which is designed as a conveyor belt and which has an identical or preferably lower conveying speed relative to the conveying element. In this way, the distances between the individual components of the tobacco flow in the achieved tobacco monolayer resulting from the stretching of the tobacco stream along the conveying direction are then reduced again by upsetting, so that an optimal, almost closed tobacco monolayer is created which passes the foreign matter separator at a relatively high throughput rate.

Der mit der Erfindung erzielte Vorteil besteht darin, daß die Ausbreitung der einzelnen Komponenten des Tabakstrome quer zur Förderrichtung sowie die Streckung des gebildeten Tabakvlieses längs der Förderrichtung zwecks Bildung einer Tabakmonolage aus nebeneinanderliegenden bzw. vereinzelten Komponenten bei einem höheren Tabakdurchsatz erzielt wird, wobei in Verbindung mit einem nachgeschaltenten Fremdkörperabschneider das angestrebte Aussonderungsergebnis hinsichtlich der Art, Form und Größe der erfaßten Fremdkörper gewährleistet ist. The advantage achieved by the invention is that the spread of the individual Components of the tobacco flow transversely to the conveying direction as well as the extension of the tobacco fleece formed along the conveying direction to form a tobacco monolayer from adjacent or isolated components a higher tobacco throughput is achieved, in conjunction with a downstream Foreign body cutter the desired sorting result with regard to the type, shape and size of the detected foreign bodies is guaranteed.

Die Erfindung wird nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert.The invention is illustrated below in the drawing illustrated embodiments explained in more detail.

Hierbei zeigen:

Figur 1
eine Fördervorrichtung zur Entfernung von Fremdkörpern aus einem Tabakstrom in der Seitenansicht,
Figuren 2 bis 5
unterschiedliche Ausführungsbeispiele der Überführungszone zwischen einem Schwingförderer und einem Bandförderer in der Draufsicht A gemäß Figur 1 und
Figur 6
eine Variante der Fördervorrichtung in der Seitenansicht.
Here show:
Figure 1
a conveyor device for removing foreign bodies from a tobacco stream in side view,
Figures 2 to 5
different embodiments of the transfer zone between a vibratory conveyor and a belt conveyor in plan view A according to Figure 1 and
Figure 6
a variant of the conveyor in the side view.

Die in Figur 1 dargestellten, einem Fremdkörperabscheider 1, bezogen auf die Förderrichtung (Pfeil 2) eines Tabakstromes 3, stromauf vorgeordneten Fördermittel bestehen aus einem ersten Förderelement 4 in Form eines Schwingförderers 6 und einem als Bandförderer ausgebildeten zweiten Förderelement 7 in Form eines unterseitigen Förderbandes 8 und eines oberseitigen Förderbandes 9, die auf diese Weise einen in Förderrichtung gegebenenfalls konvergierenden Förderkanal 11 bilden, der durch Seitenwände 12 begrenzt ist und der durch Auf- und Abwärtsverstellung des oberen Förderbandes 9 in seiner lichten Höhe veränderbar ist.The foreign matter separator 1 shown in FIG. based on the conveying direction (arrow 2) of a tobacco stream 3, Funding upstream consists of a first Conveyor element 4 in the form of a vibratory conveyor 6 and a Belt conveyor formed second conveyor element 7 in the form a lower conveyor belt 8 and an upper conveyor belt Conveyor belt 9, which in this way in the conveying direction if necessary, form a converging delivery channel 11 through Side walls 12 is limited and the up and down adjustment of the upper conveyor belt 9 in its clear height is changeable.

Die mit gemeinsamen oder eigenen Antriebsmitteln synchron betriebenen Förderbänder 8, 9 haben eine höhere Fördergeschwindigkeit als der Schwingförderer 6. Der Schwingförderer 6 ist mit einem abgestuften und gegebenenfalls profilierten Boden 13 versehen und in Förderrichtung (Pfeil 2) in einer Größenordnung von etwa 15° abwärtsgeneigt angeordnet, wobei die Neigung nach oben und unten verstellt werden kann.
Zur Erzielung eines fließenden Übergangs des Tabakstromes 3 vom Schwingförderer 6 auf das Förderband 8 des Bandförderers 7 ist das gesamte Förderelement 7 ebenfalls in Förderrichtung mit einer allerdings geringeren Neigung von etwa 10° angestellt.
The conveyor belts 8, 9 operated synchronously with common or own drive means have a higher conveying speed than the vibratory conveyor 6. The vibratory conveyor 6 is provided with a stepped and optionally profiled floor 13 and is inclined downwards in the direction of conveyance (arrow 2) by about 15 ° , whereby the inclination can be adjusted up and down.
In order to achieve a smooth transition of the tobacco stream 3 from the vibratory conveyor 6 to the conveyor belt 8 of the belt conveyor 7, the entire conveyor element 7 is also set in the conveying direction with a lower inclination of approximately 10 °.

Dem in Förderrichtung relativ zum oberen Förderband 9 vorgezogenen Ende des unteren Förderbandes 8 ist der Fremdkörperabscheider 1 zugeordnet, bestehend aus an sich bekannten Laser-Detektoren 14 zum Abtasten des Tabakstromes 3, einer farblich auf den Tabak abgestimmten Referenztrommel 16, einem auf bekannte, in den Fremdkörperabscheider 1 integrierten, nicht dargestellten Bildverarbeitungsprozessor zur Erkennung und Lagebestimmung von Fremdkörpern 17 sowie Ausblasdüsen 18 zum Selektieren der Fremdkörper 17.
Mit 19 ist ein Fördermittel zur Aufnahme und Abförderung des von Fremdkörpern 17 befreiten Tabakstromes 3 und mit 21 ein Fördermittel zum Auffangen und Abfördern der aussortierten Fremdkörper 17 bezeichnet.
The end of the lower conveyor belt 8, which is pulled forward in the conveying direction relative to the upper conveyor belt 9, is assigned the foreign body separator 1, consisting of laser detectors 14 known per se for scanning the tobacco stream 3, a reference drum 16 which is color-matched to the tobacco, one of known ones in the Foreign body separator 1, integrated image processing processor (not shown) for recognizing and determining the position of foreign bodies 17 and blow-out nozzles 18 for selecting the foreign bodies 17.
19 with a funding for receiving and removing the tobacco flow 3 freed from foreign bodies 17 and 21 is a funding for collecting and removing the sorted foreign bodies 17.

Das über dem Förderband 8 des Bandförderers 7 endende Abgabeende des Schwingförderers 6 weist gemäß Figur 2 eine derartige Abwurfkantenbegrenzung 23 auf, daß sich der bei jeder Vorwärtsschwingung des Schwingförderers 6 abgeworfene Tabak auf dem Förderband 8 auf einer Fläche mit einem in der äußeren Umgrenzung etwa rechteckigen Abwurfflächenprofil 24 verteilt.
Erreicht wird dies dadurch, daß die Abwurfkantenbegrenzung 23 in Form einer Abwurfgabel ausgebildet ist bzw. in zahlreiche - bezogen auf die Förderrichtung (Pfeil 2) - wechselweise versetzt hintereinanderliegende, durch Längskanten 26 verbundene Abwurfkantenabschnitte 27 unterteilt ist. Zweckmäßigerweise ist der Abstand zwischen den Längskanten der Gabelzinken größer als die Zinkenbreite. Auf diese Weise fällt der Tabak bei jeder Vorwärtsschwingung des Schwingförderers 6 von den quer zur Förderrichtung 2 parallel zueinander verlaufenden vorderen und hinteren Abwurfkantenabschnitten 27 sowie von den sich in Förderrichtung erstreckenden Längskanten 26 in Form einer flächenhaften Verteilung auf das Förderband 8. Damit reihen sich die abgeworfenen Tabakmengen in den aufeinanderfolgenden Vorwärtsschwingungen des Schwingförderers 6 lückenlos aneinander an, so daß eine quasi geschlossene Tabakmonolage entsteht.
The discharge end of the vibrating conveyor 6 ending above the conveyor belt 8 of the belt conveyor 7 has, in accordance with FIG 24 distributed.
This is achieved in that the discharge edge delimitation 23 is designed in the form of a discharge fork or is divided into numerous discharge edge sections 27 which are alternately staggered in relation to the conveying direction (arrow 2) and are connected by longitudinal edges 26. The distance between the longitudinal edges of the fork tines is expediently greater than the tine width. In this way, the tobacco falls with each forward oscillation of the vibratory conveyor 6 from the front and rear discharge edge sections 27 running parallel to one another transversely to the conveying direction 2 and from the longitudinal edges 26 extending in the conveying direction in the form of a surface distribution on the conveyor belt 8 Quantities of tobacco in the successive forward vibrations of the vibratory conveyor 6 to each other without gaps, so that a virtually closed tobacco monolayer is formed.

Bei der in Figur 3 dargestellten abgewandelten Ausführungsform ist die durch die Abwurfkantenbegrenzung 223 gebildete Abwurfgabel mit Abwurfzinken 228 versehen, die von in der Förderebene in Förderrichtung 202 konvergierenden Abwurfkantenabschnitten 229 begrenzt sind. Bei dieser Gestaltung ergibt sich durch den über die schrägen Abwurfkantenabschnitte 229 abgeworfenen Tabak lediglich eine etwas andere Verteilung innerhalb des ebenfalls rechteckförmigen Abwurfflächenprofils 224. In the modified embodiment shown in Figure 3 is the discharge fork formed by the discharge edge limitation 223 with discharge tines 228 provided by in the conveyor plane Throwing edge sections converging in the conveying direction 202 229 are limited. In this design, the tobacco dropped over the sloping discharge edge portions 229 just a slightly different distribution within the also rectangular discharge surface profile 224.

Beim nochmals abgewandelten Ausführungsbeispiel gemäß Figur 4 ergibt sich der Abwurfkantenverlauf bzw. die Abwurfkantenbegrenzung 323 aus einer die Bodenfläche des Schwingförderers 6 begrenzenden äußeren Abschlußkante 331 und mehrere quer zur Förderrichtung 302 nebeneinanderliegende Durchbrechungen bzw. Schlitze 332 in der Bodenfläche begrenzenden inneren Abwurfkantenabschnitten 333. Bei dieser Gestaltung mit rechteckförmigen Schlitzen 332 fällt der Tabak bei jedem Vorwärtshub des Schwingförderers 306 über die die Schlitze quer und längs der Förderrichtung begrenzenden Abwurfkantenabschnitte 333 und der zwischen den Schlitzen hindurch nach vorn bewegte Tabak schließlich über die Abschlußkante 331 auf das Förderband 308.In the again modified embodiment according to FIG. 4 the discharge edge course or the discharge edge limitation results 323 from a the bottom surface of the vibratory conveyor 6 delimiting outer end edge 331 and several transverse to Conveying direction 302 adjacent openings or Slits 332 in the bottom chute inner chute portions 333. In this design with rectangular Slits 332 drop the tobacco on each forward stroke of the vibratory conveyor 306 across the slots across and lengthwise the discharge edge sections 333 and the tobacco moving forward between the slits finally over the end edge 331 onto the conveyor belt 308.

Bei dem nochmals veränderten Ausführungsbeispiel gemäß Figur 5 weisen die Schlitze 432 eine etwas andere bzw. dreieckförmige Konfiguration mit in Förderrichtung divergierenden Abwurfkanten 434 auf, über die der Tabak innerhalb des AbwurfflächenprofilS 424 in einer etwas anderen Verteilung auf das Förderband 408 gelangt.In the again modified embodiment according to FIG. 5 the slots 432 have a slightly different or triangular shape Configuration with discharge edges diverging in the conveying direction 434 on which the tobacco within the drop area profile 424 in a slightly different distribution on the conveyor belt 408 reached.

Die Wirkungsweise ist wie folgt:
Der vorzugsweise über die volle Breite senkrecht zur Zeichenebene auf das hintere Ende des Schwingförderers 6 beispielsweise durch einen Aufwärtsförderer aufgegebene Tabak wird durch die Schwingbewegung in Richtung des Pfeils 2 vorbewegt, wobei auf noch zusammenhaftende Blatteile beim Passieren der Bodenabstufungen 13 ein zusätzlicher Löse- bzw. Trennungseffekt erzielt und damit eine Vereinzelung und Breitenverteilung der Komponenten des Tabakstromes senkrecht zur Zeichenebene unterstützt wird.
Nach dem Übertritt des Tabaks auf das Förderband 8 wird der Tabakstrom stark beschleunigt und dabei derart gestreckt, daß das Blattgut sowie die Fremdkörper 17 auch in Förderrichtung vereinzelt werden. Durch die beim Eintritt des Tabaks in den Förderkanal 11 mitgerissene Luftströmung entsteht eine zusätzliche Ventilationswirkung, welche ein beschleunigtes Mitreißen des Tabakstromes selbst bei relativ hohen Bandgeschwindigkeiten der Förderbänder 8, 9 gewährleistet. Das auf diese Weise in Form einer Monolage vom Förderband 8 abgegebene Tabakvlies 3 passiert die Laser-Detektoren 14, welche über die volle Breite (senkrecht zur Zeichenebene) auf vorbeifliegende Fremdkörper 17 reagieren und entsprechende Signale abgeben.
The mode of action is as follows:
The tobacco, which is preferably fed over the full width perpendicular to the plane of the drawing onto the rear end of the vibratory conveyor 6, for example by an upward conveyor, is advanced by the oscillating movement in the direction of the arrow 2, with an additional detaching or separating effect on sheet parts still adhering when passing through the gradations 13 achieved and thus a separation and width distribution of the components of the tobacco flow is supported perpendicular to the plane of the drawing.
After the tobacco has passed onto the conveyor belt 8, the tobacco flow is greatly accelerated and stretched in such a way that the sheet material and the foreign bodies 17 are also separated in the conveying direction. The air flow entrained when the tobacco enters the conveying channel 11 creates an additional ventilation effect which ensures accelerated entrainment of the tobacco flow even at relatively high belt speeds of the conveyor belts 8, 9. The tobacco fleece 3 released in this way in the form of a monolayer from the conveyor belt 8 passes the laser detectors 14, which react over the full width (perpendicular to the plane of the drawing) to foreign bodies 17 flying past and emit corresponding signals.

Durch Signalgabe ganz bestimmter Detektoren 14 erkennt der Bildverarbeitungsprozessor auch die jeweilige Lage der Fremdkörper 17 innerhalb des Tabakstromes 3 und steuert die entsprechenden Ausblasdüsen 18 zur gezielten Aussonderung der erkannten Fremdkörper 17 an. Die insbesondere bei relativ kleinen Fremdkörpern 17 gleichzeitig mit ausgeblasenen Tabakblätter werden danach wieder aussortiert und in den Verarbeitungsprozeß zurückgeführt.By signaling very specific detectors 14, the Image processing processor also the respective position of the foreign body 17 within the tobacco stream 3 and controls the corresponding Blow-out nozzles 18 for the targeted separation of the recognized foreign body 17. The especially at relative small foreign objects 17 simultaneously with blown tobacco leaves are then sorted out again and in the processing process returned.

Bei der in Figur 6 dargestellten Variante sind Elemente, die denen des Ausführungsbeispiels gemäß Figur 1 entsprechen, mit um hundert erhöhten Bezugszahlen versehen und nicht noch einmal besonders erläutert.
Die Variante unterscheidet sich nur dadurch von der ersten Ausführungsform, daß dem Fördermittel 107 in Förderrichtung 102 ein weiteres, im wesentlichen horizontal verlaufendes Förderband 122 folgt, das zur Optimierung der Tabakmonolage des Tabakvlieses mit der gleichen oder vorzugsweise mit einer niedrigeren Fördergeschwindigkeit als das Fördermittel 107 betrieben wird. Dadurch können zu große Abstände zwischen den Komponenten des Tabakstromes wieder verkürzt, d. h. der Tabakstrom nach der mit Sicherheit erzielten Vereinzelung seiner Komponenten längs der Förderrichtung wieder soweit gestaucht bzw. geschlossen und damit verlangsamt werden, daß die Ausscheidungsrate für kleine Fremdkörper verbessert wird.
In the variant shown in FIG. 6, elements which correspond to those of the exemplary embodiment according to FIG. 1 are provided with reference numbers increased by a hundred and are not explained again in particular.
The variant differs from the first embodiment only in that the conveying means 107 is followed in the conveying direction 102 by a further, essentially horizontally running conveyor belt 122 which operates to optimize the tobacco monolayer of the tobacco fleece with the same or preferably a lower conveying speed than the conveying means 107 becomes. As a result, excessively large distances between the components of the tobacco stream can be shortened again, ie the tobacco stream after the separation of its components which has been achieved with certainty along the conveying direction is compressed or closed again and thus slowed down so that the excretion rate for small foreign bodies is improved.

Anschließend ist diesem zusätzlichen Förderband 122 der Fremdkörperabscheider 101 zugeordnet.This additional conveyor belt 122 is then the foreign body separator 101 assigned.

Claims (7)

  1. A feed installation for producing a tobacco monolayer from a continuously moving flow of tobacco for further processing, comprising feed means for conveying the tobacco flow and for separating the tobacco pieces within the tobacco flow, wherein the feed means comprise, in the feed direction (arrow 2; 102), at least two successive feed components (4, 7; 104, 107) which are drivable at different feed rates and form a supply means and a delivery means and of which the delivery component (7; 107), arranged downstream relative to the feed direction (2; 102), has a higher feed rate, characterised in that the delivery component (7; 107) comprises two conveyor belts (8, 9; 108, 109) which form a feed channel (11; 111), are arranged one above the other and are synchronously drivable in the feed direction (2; 102).
  2. A feed installation according to claim 1, characterised in that the supply component (4; 104), arranged upstream relative to the feed direction (2; 102), is formed as a vibrating conveyor (6; 106).
  3. A feed installation according to claim 1 or 2, characterised in that the vibrating conveyor (6; 106) is inclined downwards in the feed direction (2; 102).
  4. A feed installation according to claim 3, characterised in that the inclination of the vibrating conveyor (6; 106) is adjustable upwards and downwards in relation to a starting angle in the region of approximately 15°.
  5. A feed installation according to claim 3 or 4, characterised in that the vibrating conveyor (6; 106) is provided with a stepped floor (13; 113).
  6. A feed installation according to any one of claims 1 to 5, characterised in that a foreign-body separator (1) is arranged at the output end of the delivery component (7).
  7. A feed installation according to any one of claims 1 to 6, characterised in that the delivery component (107), extending at an angle in the feed direction (102), is followed by a third, substantially horizontally extending feed component formed as a conveyor belt (122) which, relative to the delivery component (107), has a same or preferably lower feed rate.
EP94111024A 1993-07-31 1994-07-15 Feeding device for producing an uniform layer Expired - Lifetime EP0636322B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19934325838 DE4325838A1 (en) 1993-07-31 1993-07-31 Device for separating foreign bodies from a flow of tobacco
DE4325838 1993-07-31
DE4335385 1993-10-16
DE19934335385 DE4335385A1 (en) 1993-10-16 1993-10-16 Conveying apparatus for producing a single layer of tobacco

Publications (3)

Publication Number Publication Date
EP0636322A2 EP0636322A2 (en) 1995-02-01
EP0636322A3 EP0636322A3 (en) 1998-08-05
EP0636322B1 true EP0636322B1 (en) 2000-12-06

Family

ID=25928240

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Application Number Title Priority Date Filing Date
EP94111024A Expired - Lifetime EP0636322B1 (en) 1993-07-31 1994-07-15 Feeding device for producing an uniform layer

Country Status (6)

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US (1) US5558199A (en)
EP (1) EP0636322B1 (en)
JP (1) JP3615791B2 (en)
CN (1) CN1039670C (en)
DE (1) DE59409600D1 (en)
ES (1) ES2153399T3 (en)

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Also Published As

Publication number Publication date
EP0636322A3 (en) 1998-08-05
CN1039670C (en) 1998-09-09
US5558199A (en) 1996-09-24
JPH07147961A (en) 1995-06-13
DE59409600D1 (en) 2001-01-11
ES2153399T3 (en) 2001-03-01
CN1102556A (en) 1995-05-17
EP0636322A2 (en) 1995-02-01
JP3615791B2 (en) 2005-02-02

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