EP1250855B1 - Method and device for eliminating a disturbance from a tobacco channel in a rod making machine - Google Patents

Method and device for eliminating a disturbance from a tobacco channel in a rod making machine Download PDF

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Publication number
EP1250855B1
EP1250855B1 EP02007773A EP02007773A EP1250855B1 EP 1250855 B1 EP1250855 B1 EP 1250855B1 EP 02007773 A EP02007773 A EP 02007773A EP 02007773 A EP02007773 A EP 02007773A EP 1250855 B1 EP1250855 B1 EP 1250855B1
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EP
European Patent Office
Prior art keywords
channel
tobacco
fibre
conveyor belt
jam
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Expired - Lifetime
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EP02007773A
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German (de)
French (fr)
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EP1250855A1 (en
Inventor
Uwe Heitmann
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Koerber Technologies GmbH
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Hauni Maschinenbau GmbH
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Publication date
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Publication of EP1250855A1 publication Critical patent/EP1250855A1/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
    • A24C5/14Machines of the continuous-rod type
    • A24C5/31Machines of the continuous-rod type with special arrangements coming into operation during starting, slowing-down or breakdown of the machine, e.g. for diverting or breaking the continuous rod
    • 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
    • A24C5/14Machines of the continuous-rod type
    • A24C5/18Forming the rod

Definitions

  • the invention relates to a method and apparatus for eliminating a disturbance in a substantially a conveyor belt for conveying a strand of tobacco fibers and two from this downwardly extending lateral guides having tobacco channel a known cigarette rod machine "PROTOS", due to a fiber jam in the fiber strand in the channel, according to the respective preamble of claims 1 and 7.
  • a so-called fiber strand is formed in a tobacco channel made of tobacco fibers, which after being leveled is enveloped by a cigarette paper strip to form a cigarette strand.
  • the tobacco channel generally has a moving tobacco conveyor belt, followed by perpendicular thereto lateral guides or boundaries in the form of mostly downwardly extending stationary elongated rails, strips or the like (sometimes called "cheeks").
  • the tobacco channel thus has at least approximately the shape of a downwardly open U.
  • the friction on the stationary side channel walls is not low, it may be due to congestion of the moving tobacco fibers to blockages and unwanted densification of tobacco fibers in the channel, which may affect the further strand promotion and thus cigarette production to a standstill.
  • the machine in general, the machine must be turned off, after which the jammed tobacco fibers can be removed from the channel. Only then can the machine be restarted. In the case of channel blockages, intervention by operating personnel was thus previously required, which first had to clear the channel before it could clean it.
  • the problem underlying the invention is to facilitate the removal of fiber jams in channels of cigarette rod making machines.
  • this is achieved in that at a fiber jam at least one of the guides is moved transversely to the direction of movement of the fiber strand such that the channel cross-section is increased. Due to the larger channel volume, the tobacco fibers may fall down out of the channel.
  • This effect can be reinforced according to a development of the invention in that the conveyor belt is moved at a fiber jamming transversely to the direction of movement of the fiber strand to remove the fibers from the tobacco channel. In a downwardly open channel, the direction of the conveyor belt movement has a vertical component. Additional support for the obstruction removal can be achieved according to a further embodiment of the invention in that the conveyor belt is moved in a fiber jam counter to its direction of movement during undisturbed operation.
  • the obstruction removal can be further improved by the fact that when using an air-permeable conveyor belt, on whose side facing away from the channel negative pressure to hold by suction through the channel and the conveyor belt, the tobacco fibers on the conveyor belt, supplied in the congestion compressed air to the conveyor belt which helps to blow out the tobacco fibers from the channel.
  • a mechanical clearing element preferably a scraper.
  • the determination of a fiber jam or a blockage in the tobacco channel can be made according to the invention by means of a sensor.
  • a correspondingly formed signal can control the movement of the guide rail and / or the conveyor belt transversely to its direction of movement and / or the return of the conveyor belt in the opposite direction to the working direction of movement and / or the use of the movement of the semiconductorlementes.
  • the above-mentioned device according to the invention is characterized by an activated at a fiber jam device for moving at least one of the lateral guides transversely to the direction of movement of the fiber strand in the sense of an enlargement of the channel cross-section. Further device features of the invention can be found in the subordinate device claims.
  • the invention is not for the elimination of clogging in a cigarette rod maker limited. In the same or similar way can blockages as a result of congestion of fibers or similar components in others Machines are eliminated, for example, in machines for cigarillos or cigar production or in machines for the production of filters of tobacco processing Industry using lumpy filter material such as filter fibers.
  • the invention can also be used in so-called two-strand machines find in which the strands of tobacco fibers or other material in be promoted adjacent channels.
  • the advantage associated with the invention is that in case of blockages of aforementioned species due to fiber congestion no longer interfered by hand is needed, but such fiber jam can be automatically eliminated.
  • FIG. 1 shows a cigarette extruder machine of the type PROTOS of the Applicant known in the cigarette industry.
  • a pre-distributor 2 is charged in portions with tobacco fibers.
  • a removal roller 3 of the pre-distributor 2 supplements controlled a reservoir 4 with tobacco, from which a rope conveyor 5 takes tobacco and fed a stowage 6 controlled.
  • From the storage shaft 6 takes a pin roller 7 a uniform stream of tobacco, which is knocked out by a rollover roller 8 of the pins of the pin roller 7 and thrown on a circulating at a constant speed spreading cloth 9.
  • a formed on the spreading cloth 9 tobacco fleece is thrown into a sighting device 11, which consists essentially of an air curtain, the larger or heavier tobacco particles happen while all other tobacco particles from the air in a funnel formed by a pin roller 12 and a wall 13 funnel 14th be steered.
  • the tobacco fibers are thrown in a tobacco channel 16 against a strand conveyor 17, where the tobacco held by means sucked into a vacuum chamber 18 air and a tobacco fiber strand is alsauert.
  • a Egalisator 19 removes excess tobacco from the tobacco fiber strand, which is then placed on a run in synchronized cigarette paper strip 21.
  • the cigarette paper strip 21 is withdrawn from a reel 22, passed through a printing unit 23 and placed on a driven format tape 24.
  • the format strip 24 transports the tobacco rod and the cigarette paper strip 21 through a format 26, in which the cigarette paper strip 21 is folded around the tobacco rod, so that still protrudes an edge which is glued in a known manner by a Glimapparat, not shown. Then the bond is closed and dried by a Tandemnahtplätte 27.
  • a thus formed cigarette rod 28 passes through a strand density meter 29, which controls the Egalizer 19, and is cut by a knife apparatus 31 in double-length cigarettes 32.
  • the double-length cigarettes 32 are transferred from a controlled-arm transfer device 34 to a transfer drum 36 of a filter attachment machine 37, onto the cutting drum 38 of which they are divided by a circular blade into single cigarettes.
  • Conveyor belts 39, 41 promote excess tobacco into one under the reservoir 4 arranged container 42, from the recycled tobacco from the steep conveyor 5 is removed again.
  • FIGS. 2 and 3 show details of the tobacco channel 16 in the area of formation and equalization of a tobacco fiber strand.
  • the housing 18 designed as a vacuum chamber according to FIG. 2
  • deflection rollers 40, 60, 80, 100, 120 and 140 and a drive roller 160 around which an air-permeable suction belt 17 serving as a strand conveyor is guided.
  • the axes of the pulleys and the drive roller are perpendicular to the plane of the drawing.
  • the drive roller 160 drives the suction belt 17 in the direction indicated by the arrows 200 direction. If a fiber accumulation occurs in the channel 16, the direction can be reversed.
  • the suction belt 17 is perpendicular to the plane forming the bottom of the strand forming zone tobacco channel 16.
  • the forming in the conveying direction 240 in the tobacco channel with increasing height tobacco rod is taken after its equalization by the known Egalisator 19 at the end formed by the guide roller 40 end of the tobacco channel finally of other, not shown in Fig.2 processing devices of the cigarette rod machine.
  • a Sensor 300 is provided, which as a the extent of fiber occupancy of the suction belt 17 detecting detector means is used. A possible construction of such a sensor can be taken from Figure 4 and the corresponding description.
  • the sensor 300 outputs a signal to a controller 51 when the occupancy of the suction belt 17 with tobacco fibers exceeds a predetermined level or below.
  • Also connected to the controller 51 is an arrangement 52 for interrupting the supply of the tobacco fiber stream to the tobacco channel 16 and an arrangement 53 for interrupting the from a vacuum source 54 via a controllable valve 56 in the vacuum chamber 18 applied negative pressure.
  • control device 51 a drive 55 of the drive roller 160, so that he the suction conveyor belt 17 in the arrow 240 opposite Direction 241 drives.
  • controller 51 is also provided with a Pulse generator 58 connected to a control signal via a line 59 to a Moving device 61, d. H. their force element 62 ( Figure 3) for moving a lateral guide 260 outputs.
  • FIG. 3 shows details of a tobacco channel 16 in a bottom view according to arrow A in FIG. 2. It has lateral guides 260, 260a (also called “cheeks") extending downwards from the suction conveyor belt.
  • the constructed, not shown Tabakastrang is held by the negative pressure on the suction belt 17 and moved according to arrow 240. Since the guides 260, 260a of the tobacco channel 16 are stationary, a congestion in the moving fiber strand can occur due to friction, which usually leads to disturbances and even interruptions of the strand movement. In general, then an operator must eliminate the jam, ie empty the channel of tobacco, after which the machine can resume production. This manual intervention is undesirable.
  • a device 61 for moving at least one of the lateral guides 260, 260a of the channel 16 transversely to the conveying direction 240 of the suction belt 17 is provided such that the channel cross-section is increased and the tobacco can fall downwards.
  • a fluid-operated force element 62 for example a power cylinder 69, serve, whose piston rod 63 is pivotally connected to the guide 260.
  • the guide 260 is also rigidly or resiliently mounted on handlebar 64, 66 on the cigarette rod machine. 67, 81, 82, 83 and 68 are suitable partially hinged attachment points.
  • the sensor 300 If a fiber jam occurs in the channel 16, the sensor 300, after stopping the suction belt 17, sends a signal to the force element 62 whose non-visible piston in the cylinder 69 and thus also the piston rod 63 move in the direction of the arrow 71.
  • the path of the guide 260 may be relatively small, as the pressure through the congestion in the channel quickly decreases, especially when the additional measures described below are used.
  • the device 61 may also act on both guides 260, 260a. Designated at 72, 73 are stops which limit the movement of the guide 260. If the sensor 300 continues too high or too low fiber occupancy of the suction belt 17 as a result of clogging (fiber jam), the control device 51 receives a signal.
  • the force element 62 of pulse generator 58th activated via lines 59, so that it moves the guide 260 in the sense of increasing the channel cross-section (arrow 71), and the tobacco fibers can fall out.
  • the controller 51 again activates the vacuum supply of the vacuum chamber 18, the drive of the suction belt 17 and the return movement of the lateral guide 260 in its position shown by the force element 62nd
  • supporting stamps 320 (FIG. 2) attached to the vacuum chamber 18 are provided. These push, as indicated by the double arrows 340, by means of actuators 360, the suction belt 17 from above from the conveying position shown by a solid line in the direction of the inlet of the tobacco channel 16 in a position shown by a dashed line 400, if a corresponding Receive signal from the controller 51.
  • the suction belt 17 can be moved with the aid of the punch 320 in such a way, since the deflection roller 120 serving as a tensioning roller is mounted so as to be movable against the action of a clamping force (double arrow 380).
  • the controller 51 causes the actuators 360 to extend the plunger 320 in the direction indicated by arrows 340 from above against the suction belt 17 to push it towards the inlet of the tobacco channel 16, whereby the jammed tobacco rod is pushed out of the tobacco channel 16. Thereafter, the punch 320 go up again.
  • the controller 51 may drive the suction belt 17 to clear the jam in a direction corresponding to arrow 241 against the operational conveying direction 240.
  • an enlargement can also take place by displacement of a guide strip, for example by parallel displacement.
  • a scraper 77 fastened to a belt 76 can also be activated in the region of the end of the suction conveyor belt 17. For example, it may then perform a cleaning movement while the belt 76 makes one or more orbital movements.
  • the vacuum chamber 18 may be briefly connected to a compressed air source.
  • a negative pressure source 54 serving blower can be reversed by the controller 51. The thus acting through the suction belt 17 compressed air pulse supports the emptying of the tobacco channel 16th
  • FIG. 3 a shows a variant of the movement device 61 for the lateral guidance 260 of the tobacco channel 16, in which only the right end of the channel 16 is shown.
  • a rotatable eccentric 91 is connected via a connecting element 92 with the Side guide 260 of the channel 16 connected. With a rotation of the disc 91 According to arrow 93, the guide rail 260 is slightly pivoted, so that the Channel cross-section increases and the tobacco can fall out of the channel.
  • 94 is a resiliently formed support member.
  • FIG. 4 shows a section of the tobacco channel 16 at the level of the sensor 300.
  • Below of the suction belt 17 are in the lateral guides 260 and 260a holes 261 introduced, which at the channel 16 side facing Window 262 are sealed.
  • On the side of the guide 260a are two light sources 301, 302 mounted adjacent to the bores, located on the side of the guide 260 there are two photoreceptors 303, 304.
  • the receivers 303, 304 are provided with evaluation circuits 305,306 connected, in turn, not shown are connected to the controller 51 ( Figure 2).
  • the mode of action of the sensor 300 is as follows: The light of the sources 301, 302 falls through the holes 261 and the Window 262 and through the channel 16 to the receiver 303, 304.
  • the light is the upper Light source 301 shaded by the tobacco, not shown, so that the upper Receiver 303 receives no light while the lower receiver 304 continues illuminated by the light source 302.
  • Now step upstream of the sensor 300 a tobacco accumulation in the channel 16, so that is located in the region of the sensor 300 Tobacco transported by the suction belt 17 while the jam prevents that new tobacco enters the area. Therefore, also the light of the upper Source 301 pass the channel 16 and the upper receiver 303 is illuminated. As soon as this condition persists for longer than e.g. one millisecond at the evaluation circuit 305 of the upper receiver 303 is registered, this reports a congestion the controller 51.
  • a jam occurs in the opposite direction downstream of the sensor 300, so the tobacco is upstream of the jam, including in the area of the sensor 300, dammed in the channel, so that the light from the lower source 302 shaded and the lower receiver 304 is not illuminated.
  • the corresponding Evaluation circuit 306 will report a congestion to the controller 51 as soon as this condition is longer than e.g. one millisecond is registered.
  • the window 262 prevent the penetration of tobacco fibers into the holes 261, resulting in interference the function of the sensor 300 would lead.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)

Abstract

A pile up of tobacco on the conveyor (17) is dislodged by moving one or both side rails (260,260a) to enlarge the belt width or to oscillate to and fro.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Beseitigen einer Störung in einem im wesentlichen ein Förderband zur Förderung eines Stranges aus Tabakfasern und zwei von diesem nach unten verlaufende seitliche Führungen aufweisenden Tabakkanal einer bekannten Zigarettenstrangmaschine "PROTOS", infolge eines Faserstaus in dem Faserstrang in dem Kanal, entsprechend dem jeweiligen Oberbegriff der Ansprüche 1 und 7.The invention relates to a method and apparatus for eliminating a disturbance in a substantially a conveyor belt for conveying a strand of tobacco fibers and two from this downwardly extending lateral guides having tobacco channel a known cigarette rod machine "PROTOS", due to a fiber jam in the fiber strand in the channel, according to the respective preamble of claims 1 and 7.

Bei der Zigarettenherstellung im Strangverfahren wird in einem Tabakkanal aus Tabakfasern ein sogenannter Faserstrang gebildet, der nach Egalisierung von einem Zigarettenpapierstreifen zur Bildung eines Zigarettenstranges umhüllt wird. Der Tabakkanal weist im allgemeinen ein bewegtes Tabakförderband auf, an das sich senkrecht dazu seitliche Führungen oder Begrenzungen in Form von meist nach unten verlaufenden stationären langgestreckten Schienen, Leisten oder dergleichen (manchmal auch "Wangen" genannt) anschließen. Der Tabakkanal hat somit zumindest angenähert die Form eines nach unten offenen U. An der dem Kanal abgewandten Seite des luftdurchlässig ausgebildeten Förderbandes, also eines Saugbandes, befindet sich Unterdruck, so dass die Tabakfasern wegen der das Band durchströmenden Saugluft an dem Band haften bleiben und als Faserstrang mitgenommen werden. Da die Reibung an den stationären seitlichen Kanalwänden nicht gering ist, kann es durch Stau der bewegten Tabakfasern zu Verstopfungen und ungewollten Verdichtungen von Tabakfasern im Kanal kommen, was die weitere Strangförderung und damit die Zigarettenproduktion bis zum Stillstand beeinträchtigen kann. In solchen Fällen muss im allgemeinen die Maschine abgeschaltet werden, wonach die gestauten Tabakfasern aus dem Kanal entfernt werden können. Danach erst kann die Maschine wieder angefahren werden. Bei Kanalverstopfungen war bisher somit ein Eingreifen von Bedienungspersonal erforderlich, das erst den Kanal freilegen musste, bevor es ihn reinigen konnte.
Die der Erfindung zugrundeliegende Problemstellung besteht darin, die Beseitigung von Faserstaus in Kanälen von Zigarettenstrangmaschinen zu erleichtern.
Gemäß der Erfindung wird dies dadurch erreicht, dass bei einem Faserstau mindestens eine der Führungen quer zur Bewegungsrichtung des Faserstranges bewegt wird derart, dass der Kanalquerschnitt vergrößert wird. Infolge des größeren Kanalvolumens können die Tabakfasern nach unten aus dem Kanal herausfallen. Dieser Effekt lässt sich gemäß einer Weiterbildung der Erfindung dadurch verstärken, dass das Förderband bei einem Faserstau quer zur Bewegungsrichtung des Faserstranges zum Entfernen der Fasern aus dem Tabakkanal bewegt wird. Bei einem nach unten offenen Kanal hat die Richtung der Förderbandbewegung eine vertikale Komponente. Eine zusätzliche Unterstützung der Verstopfungsbeseitigung lässt sich nach einer weiteren Ausgestaltung der Erfindung dadurch erreichen, dass das Förderband bei einem Faserstau entgegen seiner Bewegungsrichtung während des ungestörten Betriebs bewegt wird. Gemäß der Erfindung lässt sich die Verstopfungsbeseitigung noch dadurch verbessern, dass bei Verwendung eines luftdurchlässigen Förderbandes, an dessen dem Kanal abgewandten Seite Unterdruck anliegt, um durch Saugluft durch dem Kanal und das Förderband die Tabakfasern an den Förderband zu halten, im Verstopfungsfall Druckluft dem Förderband zugeführt wird, die hilft, die Tabakfasern aus dem Kanal herauszublasen. Außerdem kann es vorteilhaft sein, das Ende des Kanals im Verstopfungsfall mit einem mechanischen Räumelement, vorzugsweise einem Schaber, zu durchsetzen. Die Feststellung eines Faserstaues oder einer Verstopfung im Tabakkanal lässt sich gemäß der Erfindung mittels eines Sensors vornehmen. Ein entsprechend gebildetes Signal kann die Bewegung der Führungsleiste und/oder des Förderbandes quer zu seiner Bewegungsrichtung und/oder den Rücklauf des Förderbandes in entgegengesetzter Richtung zu der Arbeits-Bewegungsrichtung und/oder den Einsatz der Bewegung des Räumelementes steuern.
In the production of cigarettes in the strand process, a so-called fiber strand is formed in a tobacco channel made of tobacco fibers, which after being leveled is enveloped by a cigarette paper strip to form a cigarette strand. The tobacco channel generally has a moving tobacco conveyor belt, followed by perpendicular thereto lateral guides or boundaries in the form of mostly downwardly extending stationary elongated rails, strips or the like (sometimes called "cheeks"). The tobacco channel thus has at least approximately the shape of a downwardly open U. At the side facing away from the channel of the air-permeable conveyor belt, ie a suction belt, there is negative pressure, so that the tobacco fibers adhere to the band because of the suction air flowing through the band and as Fiber strand are taken. Since the friction on the stationary side channel walls is not low, it may be due to congestion of the moving tobacco fibers to blockages and unwanted densification of tobacco fibers in the channel, which may affect the further strand promotion and thus cigarette production to a standstill. In such cases, in general, the machine must be turned off, after which the jammed tobacco fibers can be removed from the channel. Only then can the machine be restarted. In the case of channel blockages, intervention by operating personnel was thus previously required, which first had to clear the channel before it could clean it.
The problem underlying the invention is to facilitate the removal of fiber jams in channels of cigarette rod making machines.
According to the invention this is achieved in that at a fiber jam at least one of the guides is moved transversely to the direction of movement of the fiber strand such that the channel cross-section is increased. Due to the larger channel volume, the tobacco fibers may fall down out of the channel. This effect can be reinforced according to a development of the invention in that the conveyor belt is moved at a fiber jamming transversely to the direction of movement of the fiber strand to remove the fibers from the tobacco channel. In a downwardly open channel, the direction of the conveyor belt movement has a vertical component. Additional support for the obstruction removal can be achieved according to a further embodiment of the invention in that the conveyor belt is moved in a fiber jam counter to its direction of movement during undisturbed operation. According to the invention, the obstruction removal can be further improved by the fact that when using an air-permeable conveyor belt, on whose side facing away from the channel negative pressure to hold by suction through the channel and the conveyor belt, the tobacco fibers on the conveyor belt, supplied in the congestion compressed air to the conveyor belt which helps to blow out the tobacco fibers from the channel. In addition, it may be advantageous to enforce the end of the channel in the constipation case with a mechanical clearing element, preferably a scraper. The determination of a fiber jam or a blockage in the tobacco channel can be made according to the invention by means of a sensor. A correspondingly formed signal can control the movement of the guide rail and / or the conveyor belt transversely to its direction of movement and / or the return of the conveyor belt in the opposite direction to the working direction of movement and / or the use of the movement of the Räumelementes.

Die eingangs genannte Vorrichtung gemäß der Erfindung ist gekennzeichnet durch eine bei einem Faserstau aktivierte Vorrichtung zum Bewegen mindestens einer der seitlichen Führungen quer zur Bewegungsrichtung des Faserstrangs im Sinne einer Vergrößerung des Kanalquerschnitts.
Weitere Vorrichtungsmerkmale der Erfindung sind den untergeordneten Vorrichtungsansprüchen zu entnehmen.
The above-mentioned device according to the invention is characterized by an activated at a fiber jam device for moving at least one of the lateral guides transversely to the direction of movement of the fiber strand in the sense of an enlargement of the channel cross-section.
Further device features of the invention can be found in the subordinate device claims.

Die Erfindung ist nicht auf die Beseitigung einer Verstopfung in einer Zigarettenstrangmaschine beschränkt. Auf die gleiche oder ähnliche Weise können Verstopfungen in Folge von Staus von Fasern oder von ähnlichen Komponenten in anderen Maschinen beseitigt werden, zum Beispiel in Maschinen zur Zigarillos- oder Zigarrenherstellung oder in Maschinen zur Herstellung von Filtern der tabakverarbeitenden Industrie unter Verwendung von stückigem Filtermaterial wie Filterfasern. The invention is not for the elimination of clogging in a cigarette rod maker limited. In the same or similar way can blockages as a result of congestion of fibers or similar components in others Machines are eliminated, for example, in machines for cigarillos or cigar production or in machines for the production of filters of tobacco processing Industry using lumpy filter material such as filter fibers.

Außerdem kann die Erfindung auch bei sogenannten Zweistrangmaschinen Verwendung finden, in denen die Stränge aus Tabakfasern oder anderem Material in nebeneinander liegenden Kanälen gefördert werden.In addition, the invention can also be used in so-called two-strand machines find in which the strands of tobacco fibers or other material in be promoted adjacent channels.

Der mit der Erfindung verbundene Vorteil besteht darin, dass bei Verstopfungen der vorgenannten Arten aufgrund von Faserstaus nicht mehr von Hand eingegriffen zu werden braucht, sondern derartigen Faserstaus automatisch beseitigt werden können. The advantage associated with the invention is that in case of blockages of aforementioned species due to fiber congestion no longer interfered by hand is needed, but such fiber jam can be automatically eliminated.

Die Erfindung wird anhand von Ausführungsbeispielen in der Zeichnung näher erläutert.The invention will be explained in more detail with reference to embodiments in the drawing.

Es zeigen:Show it:

Figur 1FIG. 1
Ein Übersichtsbild einer Zigarettenstrangmaschine mit deren wesentlichen Baugruppen,An overview image of a cigarette rod machine with the essential assemblies,
Figur 2FIG. 2
den Bereich eines Tabakkanals in einer Zigarettenstrangmaschine entsprechend Figur 1 in einer Seitenansicht,the area of a tobacco channel in a cigarette rod machine according to FIG. 1 in a side view,
Figur 3FIG. 3
eine Untersicht des Tabakkanal gemäß Figur 2 in Richtung des Pfeils A mit einer durch ein fluidbetätigtes Kraftelement bewegbare Seitenführung für den Faserstrang,a bottom view of the tobacco channel according to Figure 2 in the direction of the arrow A with a movable by a fluid-operated power element side guide for the fiber strand,
Figur 3aFIG. 3a
eine Variante der Bewegungsvorrichtung für die bewegbare Seitenführung unter Verwendung eines Exzenterantriebes,a variant of the moving device for the movable side guide using an eccentric drive,
Figur 4FIG. 4
eine geschnittene Ansicht des Tabakkanals gemäß Figur 2 entlang der Linie B - B aus Richtung des Pfeils C in Figur 3 in vergrößertem Maßstab.a sectional view of the tobacco channel according to Figure 2 along the line B - B from the direction of arrow C in Figure 3 in enlarged Scale.

Figur 1 zeigt eine in der Zigarettenindustrie bekannte Zigarettenstrangmaschine vom Typ PROTOS der Anmelderin.
Von einer Schleuse 1 wird ein Vorverteiler 2 portionsweise mit Tabakfasern beschickt. Eine Entnahmewalze 3 des Vorverteilers 2 ergänzt gesteuert einen Vorratsbehälter 4 mit Tabak, aus dem ein Seilförderer 5 Tabak entnimmt und einen Stauschacht 6 gesteuert beschickt. Aus dem Stauschacht 6 entnimmt eine Stiftwalze 7 einen gleichförmigen Tabakstrom, der von einer Ausschlagwalze 8 aus den Stiften der Stiftwalze 7 herausgeschlagen und auf ein mit konstanter Geschwindigkeit umlaufendes Streutuch 9 geschleudert wird. Ein auf dem Streutuch 9 gebildetes Tabakvlies wird in eine Sichteinrichtung 11 geschleudert, die im wesentlichen aus einem Luftvorhang besteht, den größere bzw. schwerere Tabakteile passieren, während alle anderen Tabakteilchen von der Luft in einen von einer Stiftwalze 12 und einer Wand 13 gebildeten Trichter 14 gelenkt werden. Von der Stiftwalze 12 werden die Tabakfasern in einem Tabakkanal 16 gegen einen Strangförderer 17 geschleudert, an dem der Tabak mittels in eine Unterdruckkammer 18 gesaugter Luft gehalten und ein Tabakfaserstrang aufgeschauert wird. Ein Egalisator 19 entfemt überschüssigen Tabak von dem Tabakfaserstrang, der dann auf einen im Gleichlauf geführten Zigarettenpapierstreifen 21 gelegt wird. Der Zigarettenpapierstreifen 21 wird von einer Bobine 22 abgezogen, durch ein Druckwerk 23 geführt und auf ein angetriebenes Formatband 24 gelegt. Das Formatband 24 transportiert den Tabakstrang und den Zigarettenpapierstreifen 21 durch ein Format 26, in dem der Zigarettenpapierstreifen 21 um den Tabakstrang gefaltet wird, so dass noch eine Kante absteht, die von einem nicht dargestellten Leimapparat in bekannter Weise beleimt wird. Darauf wird die Klebnaht geschlossen und von einer Tandemnahtplätte 27 getrocknet. Ein so gebildeter Zigarettenstrang 28 durchläuft ein Strangdichtemessgerät 29, das den Egalisator 19 steuert, und wird von einem Messerapparat 31 in doppeltlange Zigaretten 32 geschnitten. Die doppeltlangen Zigaretten 32 werden von einer gesteuerte Arme aufweisenden Übergabevorrichtung 34 einer Übernahmetrommel 36 einer Filteransetzmaschine 37 übergeben, auf deren Schneidtrommel 38 sie mit einem Kreismesser in Einzelzigaretten geteilt werden.
FIG. 1 shows a cigarette extruder machine of the type PROTOS of the Applicant known in the cigarette industry.
From a lock 1, a pre-distributor 2 is charged in portions with tobacco fibers. A removal roller 3 of the pre-distributor 2 supplements controlled a reservoir 4 with tobacco, from which a rope conveyor 5 takes tobacco and fed a stowage 6 controlled. From the storage shaft 6 takes a pin roller 7 a uniform stream of tobacco, which is knocked out by a rollover roller 8 of the pins of the pin roller 7 and thrown on a circulating at a constant speed spreading cloth 9. A formed on the spreading cloth 9 tobacco fleece is thrown into a sighting device 11, which consists essentially of an air curtain, the larger or heavier tobacco particles happen while all other tobacco particles from the air in a funnel formed by a pin roller 12 and a wall 13 funnel 14th be steered. From the pin roller 12, the tobacco fibers are thrown in a tobacco channel 16 against a strand conveyor 17, where the tobacco held by means sucked into a vacuum chamber 18 air and a tobacco fiber strand is aufauert. A Egalisator 19 removes excess tobacco from the tobacco fiber strand, which is then placed on a run in synchronized cigarette paper strip 21. The cigarette paper strip 21 is withdrawn from a reel 22, passed through a printing unit 23 and placed on a driven format tape 24. The format strip 24 transports the tobacco rod and the cigarette paper strip 21 through a format 26, in which the cigarette paper strip 21 is folded around the tobacco rod, so that still protrudes an edge which is glued in a known manner by a Glimapparat, not shown. Then the bond is closed and dried by a Tandemnahtplätte 27. A thus formed cigarette rod 28 passes through a strand density meter 29, which controls the Egalizer 19, and is cut by a knife apparatus 31 in double-length cigarettes 32. The double-length cigarettes 32 are transferred from a controlled-arm transfer device 34 to a transfer drum 36 of a filter attachment machine 37, onto the cutting drum 38 of which they are divided by a circular blade into single cigarettes.

Förderbänder 39, 41 fördern überschüssigen Tabak in einen unter dem Vorratsbehälter 4 angeordneten Behälter 42, aus dem rückgeführter Tabak von dem Steilförderer 5 wieder entnommen wird.Conveyor belts 39, 41 promote excess tobacco into one under the reservoir 4 arranged container 42, from the recycled tobacco from the steep conveyor 5 is removed again.

In den Figuren 2 und 3 sind Details des Tabakkanals 16 im Bereich der Bildung und Egalisation eines Tabakfaserstranges dargestellt.
In dem entsprechend Figur 2 als Unterdruckkammer ausgebildeten Gehäuse 18 befinden sich Umlenkrollen 40, 60, 80, 100, 120 und 140 sowie eine Antriebsrolle 160, um die ein als Strangförderer dienendes luftdurchlässiges Saugband 17 geführt ist. Die Achsen der Umlenkrollen sowie der Antriebsrolle stehen senkrecht zur Zeichenebene. Die Antriebsrolle 160 treibt das Saugband 17 in der durch die Pfeile 200 angedeuteten Richtung an. Bei Auftreten eines Faserstaues in dem Kanal 16 kann die Richtung umgekehrt werden.
Am unteren Rand der in der Figur 2 dargestellten Vorrichtung bildet das senkrecht zur Zeichenebene stehende Saugband 17 den Boden des als Strangbildungszone dienenden Tabakkanals 16. Dieser verläuft von der Umlenkrolle 140 bis zur Umlenkrolle 40. Seitlich, d. h. parallel zur Zeichenebene, wird der Tabakkanal 16 von einer Führung 260 und einer weiteren Führung 260a begrenzt, so dass der Tabakkanal 16 in Förderrichtung 240 gesehen einen Querschnitt aufweist, der die Form eines auf dem Kopf stehenden U aufweist. Dem somit nach unten offenen Tabakkanal 16 wird von unten mit Hilfe der Stiftwalze 12 (Figur 1) ein Faserstrom aus Tabakfasern zugeführt. Durch das von der Unterdruckkammer 18 mit Unterdruck beaufschlagte Saugband 17 werden diese Tabakfasern an das Saugband angesaugt, zwischen den Umlenkrollen 140 und 40 an dem Saugband 17 hängend angesammelt und durch den Tabakkanal 16 gefördert. Der sich in Förderrichtung 240 in dem Tabakkanal mit zunehmender Höhe bildende Tabakstrang wird nach seiner Egalisierung durch den an sich bekannten Egalisator 19 an dem durch die Umlenkrolle 40 gebildeten Ende des Tabakkanals schließlich von weiteren, in Fig.2 nicht dargestellten Verarbeitungsvorrichtungen der Zigarettenstrangmaschine übernommen.
FIGS. 2 and 3 show details of the tobacco channel 16 in the area of formation and equalization of a tobacco fiber strand.
In the housing 18 designed as a vacuum chamber according to FIG. 2, there are deflection rollers 40, 60, 80, 100, 120 and 140 and a drive roller 160 around which an air-permeable suction belt 17 serving as a strand conveyor is guided. The axes of the pulleys and the drive roller are perpendicular to the plane of the drawing. The drive roller 160 drives the suction belt 17 in the direction indicated by the arrows 200 direction. If a fiber accumulation occurs in the channel 16, the direction can be reversed.
At the bottom of the device shown in Figure 2, the suction belt 17 is perpendicular to the plane forming the bottom of the strand forming zone tobacco channel 16. This runs from the guide roller 140 to the guide roller 40. Sideways, ie parallel to the plane, the tobacco channel 16 of a guide 260 and a further guide 260a limited so that the tobacco channel 16 seen in the conveying direction 240 has a cross-section which has the shape of an upside-down U. The thus open down tobacco channel 16 is fed from below by means of the pin roller 12 (Figure 1), a fiber stream of tobacco fibers. By sucked from the vacuum chamber 18 with vacuum suction belt 17, these tobacco fibers are sucked to the suction belt, between the pulleys 140 and 40 accumulated on the suction belt 17 and suspended by the tobacco channel 16. The forming in the conveying direction 240 in the tobacco channel with increasing height tobacco rod is taken after its equalization by the known Egalisator 19 at the end formed by the guide roller 40 end of the tobacco channel finally of other, not shown in Fig.2 processing devices of the cigarette rod machine.

Kurz vor dem durch die Umlenkrolle 40 gebildeten Ende des Tabakkanals 16 ist ein Sensor 300 vorgesehen, der als ein das Ausmaß der Faserbelegung des Saugbandes 17 erfassendes Detektormittel dient. Ein möglicher Aufbau eines solchen Sensors kann der Figur 4 und der entsprechenden Beschreibung entnommen werden. Der Sensor 300 gibt an eine Steuerungseinrichtung 51 ein Signal ab, wenn die Belegung des Saugbandes 17 mit Tabakfasern ein vorgegebenes Maß überschreitet oder unterschreitet. Ebenfalls mit der Steuereinrichtung 51 verbunden ist eine Anordnung 52 zum Unterbrechen der Zufuhr des Tabakfaserstroms zu dem Tabakkanal 16 und eine Anordnung 53 zum Unterbrechen des von einer Unterdruckquelle 54 über ein steuerbares Ventil 56 in der Unterdruckkammer 18 angelegten Unterdrucks. Zusätzlich kann die Steuereinrichtung 51 einen Antrieb 55 der Antriebsrolle 160 umsteuern, so dass er das Saugförderband 17 in zum Pfeil 240 entgegengesetzter Richtung 241 antreibt. Die Steuereinrichtung 51 ist außerdem mit einem Impulsgeber 58 verbunden, der ein Steuersignal über eine Leitung 59 an eine Bewegungsvorrichtung 61, d. h. deren Kraftelement 62 (Figur 3) zum Bewegen einer seitlichen Führung 260 abgibt.Just before the end formed by the guide roller 40 of the tobacco channel 16 is a Sensor 300 is provided, which as a the extent of fiber occupancy of the suction belt 17 detecting detector means is used. A possible construction of such a sensor can be taken from Figure 4 and the corresponding description. The sensor 300 outputs a signal to a controller 51 when the occupancy of the suction belt 17 with tobacco fibers exceeds a predetermined level or below. Also connected to the controller 51 is an arrangement 52 for interrupting the supply of the tobacco fiber stream to the tobacco channel 16 and an arrangement 53 for interrupting the from a vacuum source 54 via a controllable valve 56 in the vacuum chamber 18 applied negative pressure. In addition, the control device 51, a drive 55 of the drive roller 160, so that he the suction conveyor belt 17 in the arrow 240 opposite Direction 241 drives. The controller 51 is also provided with a Pulse generator 58 connected to a control signal via a line 59 to a Moving device 61, d. H. their force element 62 (Figure 3) for moving a lateral guide 260 outputs.

Figur 3 zeigt Details eines Tabakkanals 16 in einer Untersicht entsprechend Pfeil A in Figur 2. Er weist von dem Saugförderband nach unten verlaufende seitliche Führungen 260,260a (auch "Wangen" genannt) auf. In dem so gebildeten U wird der aufgebaute, nicht dargestellte Tabakastrang von dem Unterdruck an dem Saugband 17 gehalten und entsprechend Pfeil 240 bewegt. Da die Führungen 260, 260a des Tabakkanals 16 stationär sind, kann infolge von Reibung ein Stau im bewegten Faserstrang auftreten, der meist zu Störungen und sogar Unterbrechungen der Strangbewegung führt. Im allgemeinen muss dann eine Bedienungsperson den Stau beseitigen, d. h. den Kanal von Tabak entleeren, worauf die Maschine die Produktion wieder aufnehmen kann. Dieses manuelle Eingreifen ist unerwünscht. Daher ist bei der Erfindung eine Vorrichtung 61 zum Bewegen mindestens einer der seitlichen Führungen 260, 260a des Kanals 16 quer zur Förderrichtung 240 des Saugbandes 17 vorgesehen, derart, dass der Kanalquerschnitt vergrößert wird und der Tabak nach unten wegfallen kann. Hierzu kann ein fluidbetriebenes Kraftelement 62, zum Beispiel ein Kraftzylinder 69, dienen, dessen Kolbenstange 63 mit der Führung 260 gelenkig verbunden ist. Die Führung 260 ist außerdem starr oder federnd über Lenker 64, 66 an der Zigarettenstrangmaschine befestigt. 67, 81, 82, 83 und 68 sind geeignete zum Teil gelenkige Befestigungspunkte. Tritt ein Faserstau im Kanal 16 auf, so gibt der Sensor 300 nach Stillsetzen des Saugbandes 17 ein Signal an das Kraftelement 62, dessen nicht sichtbarer Kolben im Zylinder 69 und damit auch die Kolbenstange 63 eine Bewegung in Richtung des Pfeils 71 ausführt. Der Weg der Führung 260 kann relativ klein sein, da der Druck durch den Stau im Kanal schnell nachlässt, insbesondere wenn die nachfolgend beschriebenen zusätzlichen Maßnahmen eingesetzt werden. Die Vorrichtung 61 kann auch auf beide Führungen 260, 260a wirken. Mit 72, 73 sind Anschläge bezeichnet, die die Bewegung der Führung 260 begrenzen.
Stellt der Sensor 300 eine zu hohe oder zu niedrige Faserbelegung des Saugbandes 17 als Folge einer Verstopfung (Faserstau) fort, so erhält die Steuereineinrichtung 51 ein Signal. Sie gibt ihrerseits Steuersignale an die Anordnung 52 zum Unterbrechen der Tabakzufuhr, an die Anordnung 53 zum Abschalten des Unterdrucks im Unterdruckraum 18 durch Schließen des Ventils 56 und die Anordnung 57 zum Abschalten des Antriebsmotors 55 von Rolle 160. Außerdem wird das Kraftelement 62 von Impulsgeber 58 über Leitungen 59 aktiviert, so dass es die Führung 260 im Sinne einer Vergrößerung des Kanalquerschnitts (Pfeil 71) bewegt, und die Tabakfasern herausfallen können. Nach der Entfernung der Fasern aus dem Kanal 16 und Beseitigung des Staus aktiviert die Steuereinrichtung 51 wieder die Unterdruckversorgung der Unterdruckkammer 18, den Antrieb des Saugbandes 17 und die Rückbewegung der seitlichen Führung 260 in ihre gezeichnete Position durch das Kraftelement 62.
FIG. 3 shows details of a tobacco channel 16 in a bottom view according to arrow A in FIG. 2. It has lateral guides 260, 260a (also called "cheeks") extending downwards from the suction conveyor belt. In the U thus formed, the constructed, not shown Tabakastrang is held by the negative pressure on the suction belt 17 and moved according to arrow 240. Since the guides 260, 260a of the tobacco channel 16 are stationary, a congestion in the moving fiber strand can occur due to friction, which usually leads to disturbances and even interruptions of the strand movement. In general, then an operator must eliminate the jam, ie empty the channel of tobacco, after which the machine can resume production. This manual intervention is undesirable. Therefore, in the invention, a device 61 for moving at least one of the lateral guides 260, 260a of the channel 16 transversely to the conveying direction 240 of the suction belt 17 is provided such that the channel cross-section is increased and the tobacco can fall downwards. For this purpose, a fluid-operated force element 62, for example a power cylinder 69, serve, whose piston rod 63 is pivotally connected to the guide 260. The guide 260 is also rigidly or resiliently mounted on handlebar 64, 66 on the cigarette rod machine. 67, 81, 82, 83 and 68 are suitable partially hinged attachment points. If a fiber jam occurs in the channel 16, the sensor 300, after stopping the suction belt 17, sends a signal to the force element 62 whose non-visible piston in the cylinder 69 and thus also the piston rod 63 move in the direction of the arrow 71. The path of the guide 260 may be relatively small, as the pressure through the congestion in the channel quickly decreases, especially when the additional measures described below are used. The device 61 may also act on both guides 260, 260a. Designated at 72, 73 are stops which limit the movement of the guide 260.
If the sensor 300 continues too high or too low fiber occupancy of the suction belt 17 as a result of clogging (fiber jam), the control device 51 receives a signal. It in turn gives control signals to the arrangement 52 for interrupting the tobacco supply, to the arrangement 53 for switching off the negative pressure in the vacuum chamber 18 by closing the valve 56 and the arrangement 57 for switching off the drive motor 55 of roller 160. In addition, the force element 62 of pulse generator 58th activated via lines 59, so that it moves the guide 260 in the sense of increasing the channel cross-section (arrow 71), and the tobacco fibers can fall out. After the removal of the fibers from the channel 16 and elimination of the jam, the controller 51 again activates the vacuum supply of the vacuum chamber 18, the drive of the suction belt 17 and the return movement of the lateral guide 260 in its position shown by the force element 62nd

Zusätzlich zur Bewegung der Seitenführung 260 durch Element 62 und dessen Wirkung unterstützend sind an der Unterdruckkammer 18 befestigte Stempel 320 (Fig.2) vorgesehen. Diese drücken, wie durch die Doppelpfeile 340 angedeutet, mit Hilfe von Antrieben 360 das Saugband 17 von oben aus der durch eine durchgezogene Linie dargestellten Förderposition in Richtung auf den Einlass des Tabakkanals 16 in eine durch eine gestrichelte Linie 400 dargestellte Position, wenn sie ein entsprechendes Signal von der Steuereinrichtung 51 empfangen. Das Saugband 17 lässt sich mit Hilfe der Stempel 320 derart bewegen, da die als Spannrolle dienende Umlenkrolle 120 gegen die Wirkung einer Spannkraft (Doppelpfeil 380) ortsveränderlich gelagert ist. Durch die Bewegung des Saugbandes 17 nach unten wird die Entfernung der Tabakfasern aus dem Kanal unterstützt. Die Steuereinrichtung 51 veranlasst die Antriebe 360, die Stempel 320 in der durch Pfeile 340 angedeuteten Richtung von oben gegen das Saugband 17 herauszufahren, um es in Richtung auf den Einlass des Tabakkanals 16 zu drücken, wodurch der gestaute Tabakstrang aus dem Tabakkanal 16 herausgedrückt wird. Danach fahren die Stempel 320 wieder nach oben.
Zusätzlich zu den vorbeschriebenen Maßnahmen oder unabhängig davon kann die Steuerungseinrichtung 51 das Saugband 17 zur Staubeseitigung in einer Richtung entsprechend Pfeil 241 entgegen der betriebsmäßigen Förderrichtung 240 antreiben.
Anstelle einer Vergrößerung des Kanalquerschnitts durch das dargestellte Verschwenken kann eine Vergrößerung auch durch Verschiebung einer Führungsleiste, zum Beispiel durch Parallelverschiebung, erfolgen. Bei einen Maschinenstop zur Staubeseitigung kann auch ein an einem Band 76 befestigter Schaber 77 im Bereich des Endes von Saugförderband 17 aktiviert werden. Er kann dann beispielsweise eine Reinigungsbewegung ausführen, während das Band 76 eine oder mehrere Umlaufbewegungen ausführt.
Am Ende der Faserbeseitigung aus dem Tabakkanal 16 kann die Unterdruckkammer 18 kurzzeitig mit einer Druckluftquelle verbunden sein. Hierzu kann z.B. die Drehrichtung eines als Unterdruckquelle 54 dienenden Gebläses durch die Steuerung 51 umgesteuert werden. Der damit durch das Saugband 17 wirkende Druckluftimpuls unterstützt die Entleerung des Tabakkanals 16.
In addition to the movement of the side guide 260 by means of the element 62 and its action, supporting stamps 320 (FIG. 2) attached to the vacuum chamber 18 are provided. These push, as indicated by the double arrows 340, by means of actuators 360, the suction belt 17 from above from the conveying position shown by a solid line in the direction of the inlet of the tobacco channel 16 in a position shown by a dashed line 400, if a corresponding Receive signal from the controller 51. The suction belt 17 can be moved with the aid of the punch 320 in such a way, since the deflection roller 120 serving as a tensioning roller is mounted so as to be movable against the action of a clamping force (double arrow 380). By the movement of the suction belt 17 down the removal of tobacco fibers from the channel is supported. The controller 51 causes the actuators 360 to extend the plunger 320 in the direction indicated by arrows 340 from above against the suction belt 17 to push it towards the inlet of the tobacco channel 16, whereby the jammed tobacco rod is pushed out of the tobacco channel 16. Thereafter, the punch 320 go up again.
In addition to the above-described measures or independently thereof, the controller 51 may drive the suction belt 17 to clear the jam in a direction corresponding to arrow 241 against the operational conveying direction 240.
Instead of increasing the channel cross-section through the illustrated pivoting, an enlargement can also take place by displacement of a guide strip, for example by parallel displacement. In a machine stop for removing jams, a scraper 77 fastened to a belt 76 can also be activated in the region of the end of the suction conveyor belt 17. For example, it may then perform a cleaning movement while the belt 76 makes one or more orbital movements.
At the end of the fiber removal from the tobacco channel 16, the vacuum chamber 18 may be briefly connected to a compressed air source. For this purpose, for example, the direction of rotation of a negative pressure source 54 serving blower can be reversed by the controller 51. The thus acting through the suction belt 17 compressed air pulse supports the emptying of the tobacco channel 16th

Figur 3a zeigt eine Variante der Bewegungsvorrichtung 61 für die Seitenführung 260 des Tabakkanals 16, bei der nur das rechte Ende des Kanals 16 dargestellt ist. Eine drehbare Exzenterscheibe 91 ist über ein Verbindungselement 92 mit der Seitenführung 260 des Kanals 16 verbunden. Bei einer Verdrehung der Scheibe 91 entsprechend Pfeil 93 wird die Führungsleiste 260 etwas verschwenkt, so dass der Kanalquerschnitt sich vergrößert und der Tabak aus dem Kanal herausfallen kann. 94 ist ein federnd ausgebildetes Stützelement.FIG. 3 a shows a variant of the movement device 61 for the lateral guidance 260 of the tobacco channel 16, in which only the right end of the channel 16 is shown. A rotatable eccentric 91 is connected via a connecting element 92 with the Side guide 260 of the channel 16 connected. With a rotation of the disc 91 According to arrow 93, the guide rail 260 is slightly pivoted, so that the Channel cross-section increases and the tobacco can fall out of the channel. 94 is a resiliently formed support member.

Figur 4 zeigt einen Schnitt des Tabakkanals 16 in Höhe des Sensors 300. Unterhalb des Saugbandes 17 sind in den seitlichen Führungen 260 und 260a Bohrungen 261 eingebracht, welche an der dem Kanal 16 zugewandten Seite durch Fenster 262 abgedichtet sind. Auf der Seite der Führung 260a sind zwei Lichtquellen 301, 302 neben den Bohrungen angebracht, auf der Seite der Führung 260 befinden sich zwei Photoempfänger 303, 304. Die Empfänger 303, 304 sind mit Auswerteschaltungen 305,306 verbunden, die wiederum auf nicht dargestellte Weise mit der Steuerung 51 (Fig. 2) verbunden sind. Die Wirkungsweise des Sensors 300 ist wie folgt: Das Licht der Quellen 301, 302 fällt durch die Bohrungen 261 und die Fenster 262 und durch den Kanal 16 auf die Empfänger 303,304. Ist der Kanal im Betrieb teilweise mit Tabak gefüllt, so wird beispielsweise das Licht der oberen Lichtquelle 301 durch den nicht dargestellten Tabak abgeschattet, so dass der obere Empfänger 303 kein Licht erhält, während der untere Empfänger 304 weiterhin von der Lichtquelle 302 beleuchtet wird. Tritt nun stromaufwärts des Sensors 300 ein Tabakstau in dem Kanal 16 auf, so wird der im Bereich des Sensors 300 befindliche Tabak durch das Saugband 17 abtransportiert, während der Stau verhindert, dass neuer Tabak in den Bereich gelangt. Daher kann auch das Licht der oberen Quelle 301 den Kanal 16 passieren und der obere Empfänger 303 wird beleuchtet. Sobald dieser Zustand für länger als z.B. eine Millisekunde an der Auswerteschaltung 305 des oberen Empfängers 303 registriert wird, meldet diese einen Stau an die Steuerung 51. Tritt ein Stau dem entgegen stromabwärts des Sensors 300 auf, so wird sich der Tabak stromaufwärts des Staus, also auch im Bereich des Sensors 300, im Kanal aufstauen, so dass auch das Licht der unteren Quelle 302 abgeschattet wird und der untere Empfänger 304 nicht beleuchtet wird. Die entsprechende Auswerteschaltung 306 wird meldet einen Stau an die Steuerung 51, sobald dieser Zustand länger als z.B. eine Millisekunde registriert wird. Die Fenster 262 verhindern das Eindringen von Tabakfasern in die Bohrungen 261, was zu Störungen der Funktion des Sensors 300 führen würde.FIG. 4 shows a section of the tobacco channel 16 at the level of the sensor 300. Below of the suction belt 17 are in the lateral guides 260 and 260a holes 261 introduced, which at the channel 16 side facing Window 262 are sealed. On the side of the guide 260a are two light sources 301, 302 mounted adjacent to the bores, located on the side of the guide 260 there are two photoreceptors 303, 304. The receivers 303, 304 are provided with evaluation circuits 305,306 connected, in turn, not shown are connected to the controller 51 (Figure 2). The mode of action of the sensor 300 is as follows: The light of the sources 301, 302 falls through the holes 261 and the Window 262 and through the channel 16 to the receiver 303, 304. Is the channel in Operation partially filled with tobacco, so for example, the light is the upper Light source 301 shaded by the tobacco, not shown, so that the upper Receiver 303 receives no light while the lower receiver 304 continues illuminated by the light source 302. Now step upstream of the sensor 300 a tobacco accumulation in the channel 16, so that is located in the region of the sensor 300 Tobacco transported by the suction belt 17 while the jam prevents that new tobacco enters the area. Therefore, also the light of the upper Source 301 pass the channel 16 and the upper receiver 303 is illuminated. As soon as this condition persists for longer than e.g. one millisecond at the evaluation circuit 305 of the upper receiver 303 is registered, this reports a congestion the controller 51. If a jam occurs in the opposite direction downstream of the sensor 300, so the tobacco is upstream of the jam, including in the area of the sensor 300, dammed in the channel, so that the light from the lower source 302 shaded and the lower receiver 304 is not illuminated. The corresponding Evaluation circuit 306 will report a congestion to the controller 51 as soon as this condition is longer than e.g. one millisecond is registered. The window 262 prevent the penetration of tobacco fibers into the holes 261, resulting in interference the function of the sensor 300 would lead.

Claims (15)

  1. Method for eliminating a fault in a tobacco channel of a cigarette strand machine due to a fibre jam in the channel, said tobacco channel having, in essence, a conveyor belt, for conveying a strand of tobacco fibres, and two lateral guides extending downwards from said conveyor belt, characterized in that, in the event of a fibre jam, at least one of the guides is moved across the direction of movement of the fibre strand in such a way that the cross-section of the channel is enlarged.
  2. Method according to Claim 1, characterized in that, in the event of a fibre jam, the conveyor belt is moved across the direction of movement of the fibre strand for the purpose of removing the fibres from the tobacco channel.
  3. Method according to Claim 1 and/or 2, characterized in that, in the event of a fibre jam, the conveyor belt is moved contrary to its direction of movement during fault-free operation.
  4. Method according to one or more of the preceding Claims, characterized in that, during fault-free operation, negative pressure is applied on the side of the conveyor belt, designed to be air-permeable, that faces away from the fibre strand, and, in the event of a fibre jam, positive pressure is applied to the conveyor belt.
  5. Method according to one or more of the preceding Claims, characterized in that, in the event of a fibre jam, a clearing element, preferably a scraper blade, which extends at least partially into the tobacco channel, is activated.
  6. Method according to one or more of the preceding Claims, characterized in that a signal generated upon the occurrence of a fibre jam in the channel is used to move at least one guide and also, possibly, the conveyor belt itself.
  7. Device for eliminating a fault in a tobacco channel of a cigarette strand machine due to a fibre jam in the fibre strand in the channel, said tobacco channel having, in essence, a conveyor belt, for conveying a strand of tobacco fibres, and two lateral guides extending downwards from said conveyor belt, characterized by a device (61), activated in the event of a fibre jam, for moving at least one of the lateral guides (260) across the direction of movement (240) of the fibre strand so as to enlarge the cross-section of the channel.
  8. Device according to Claim 7, characterized by a drive (320, 360), activated in the event of a fibre jam, for displacing the conveyor belt (17) across the direction of movement (240) of the fibre strand for the purpose of removing tobacco fibres from the channel (16).
  9. Device according to Claim 7 and/or 8, characterized by a drive (55) for the conveyor belt (17), which reverses (241) the direction of movement (240) of the latter in the event of a conveying jam.
  10. Device according to one or more of Claims 7 to 9, characterized by a negative-pressure chamber (18) on the side of the air-permeable conveyor belt (17) that faces away from the fibre strand, said negative-pressure chamber being connectable to a positive-pressure source in the event of a fibre jam.
  11. Device according to one or more of Claims 7 to 10, characterized by a scraper blade (77) which, in the event of a fibre jam, can be moved to execute a cleaning movement through at least a portion of the channel (16).
  12. Device according to one or more of Claims 7 to 11, characterized by a measuring device (300), for the occurrence of a fibre jam, the output signal of which is supplied to the device (61) for displacing a lateral guide (260).
  13. Device according to one or more of Claims 7 to 12, characterized in that the movement device (61) for at least one of the lateral guides (26) has a fluid-actuated force element (62).
  14. Device according to Claim 13, characterized in that the force element has a fluid-actuated cylinder-piston arrangement (62, 63).
  15. Device according to one or more of Claims 7 to 12, characterized in that the movement device 61 for at least one of the lateral guides (260) has an eccentric arrangement (91...93).
EP02007773A 2001-04-21 2002-04-06 Method and device for eliminating a disturbance from a tobacco channel in a rod making machine Expired - Lifetime EP1250855B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10119617 2001-04-21
DE10119617A DE10119617A1 (en) 2001-04-21 2001-04-21 Method and device for eliminating a malfunction in a tobacco duct of a cigarette rod machine

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EP1250855A1 EP1250855A1 (en) 2002-10-23
EP1250855B1 true EP1250855B1 (en) 2005-06-22

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EP02007773A Expired - Lifetime EP1250855B1 (en) 2001-04-21 2002-04-06 Method and device for eliminating a disturbance from a tobacco channel in a rod making machine

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EP (1) EP1250855B1 (en)
AT (1) ATE298208T1 (en)
DE (2) DE10119617A1 (en)

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EP2465365A1 (en) 2010-12-17 2012-06-20 HAUNI Maschinenbau AG Device and method for conveying strands of fibres for the tobacco industry
EP2465364A1 (en) 2010-12-17 2012-06-20 HAUNI Maschinenbau AG Device and method for conveying strands of fibres for the tobacco industry

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EP1424016B1 (en) * 2002-11-29 2006-07-19 Hauni Maschinenbau AG Circulating conveyor belt for transporting a rod of the tobacco industry
EP1529450B1 (en) * 2003-11-07 2009-03-25 Hauni Maschinenbau AG Method and apparatus for producing at least two fibre strands for the tobacco industry
DE102005025749B4 (en) * 2005-06-02 2013-11-14 Hauni Maschinenbau Ag Cleaning device and cleaning method for a strand guide channel of a strand manufacturing machine of the tobacco processing industry
DE102010040949A1 (en) * 2010-09-17 2012-03-22 Hauni Maschinenbau Ag Apparatus and method for building a continuous strand of the tobacco processing industry
ITBO20110258A1 (en) * 2011-05-09 2012-11-10 Gd Spa FORMATION UNIT OF A TOBACCO CABLE IN A CIGARETTE PACKAGING MACHINE.
DE102011082625A1 (en) 2011-09-13 2013-03-14 Hauni Maschinenbau Ag Control device for controlling at least one parameter of an article of the tobacco processing industry
DE102018105111A1 (en) * 2018-03-06 2019-09-12 Hauni Maschinenbau Gmbh Saugbandförderer and strand machine of the tobacco processing industry and use of a measuring device in a suction belt conveyor a strand machine of the tobacco processing industry
US20220015410A1 (en) * 2019-01-04 2022-01-20 British American Tobacco (Investments) Limited Conveyor and method for conveying strands of aerosol-generating material, and apparatus and method for producing a rod of aerosol-generating material

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FR1525319A (en) * 1967-04-06 1968-05-17 Seita automatic removal of jams in machines for processing split-state materials, especially in cigarette making machines
IT1228401B (en) * 1988-03-29 1991-06-14 Hauni Werke Koerber & Co Kg PROCEDURE AND DEVICE FOR THE MANUFACTURE OF A TOBACCO LODGING.
GB9819404D0 (en) * 1998-09-04 1998-10-28 Molins Plc Apparatus for forming a tabacco stream
EP0988802A1 (en) * 1998-09-22 2000-03-29 Fabriques De Tabac Reunies S.A. Method for removing a blockage in a machine for the manufacturing of tobacco products and machine operating according to said method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2465365A1 (en) 2010-12-17 2012-06-20 HAUNI Maschinenbau AG Device and method for conveying strands of fibres for the tobacco industry
EP2465364A1 (en) 2010-12-17 2012-06-20 HAUNI Maschinenbau AG Device and method for conveying strands of fibres for the tobacco industry
DE102010054992A1 (en) 2010-12-17 2012-06-21 Hauni Maschinenbau Ag Apparatus and method for conveying strands of fibers of the tobacco processing industry
DE102010054991A1 (en) 2010-12-17 2012-06-21 Hauni Maschinenbau Ag Apparatus for conveying a strand of fibers of the tobacco processing industry

Also Published As

Publication number Publication date
DE50203440D1 (en) 2005-07-28
EP1250855A1 (en) 2002-10-23
PL353296A1 (en) 2002-11-04
DE10119617A1 (en) 2002-10-24
ATE298208T1 (en) 2005-07-15

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