EP0448977B1 - Method and device for the manufacture of a coaxial tobacco or filter rod - Google Patents

Method and device for the manufacture of a coaxial tobacco or filter rod Download PDF

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Publication number
EP0448977B1
EP0448977B1 EP91102958A EP91102958A EP0448977B1 EP 0448977 B1 EP0448977 B1 EP 0448977B1 EP 91102958 A EP91102958 A EP 91102958A EP 91102958 A EP91102958 A EP 91102958A EP 0448977 B1 EP0448977 B1 EP 0448977B1
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EP
European Patent Office
Prior art keywords
magazine
strand
preformed
preformed rod
rod
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
EP91102958A
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German (de)
French (fr)
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EP0448977A3 (en
EP0448977A2 (en
Inventor
Otto Blaffert
Meinhard Dipl.-Ing. Meier
Herbert Struck
Arno Dipl.-Ing. Weiss
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British American Tobacco Germany GmbH
Original Assignee
British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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Publication of EP0448977A2 publication Critical patent/EP0448977A2/en
Publication of EP0448977A3 publication Critical patent/EP0448977A3/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1821—Forming the rod containing different tobacco mixtures, e.g. composite rods
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes

Definitions

  • the invention relates to a method and a device for producing coaxial tobacco or filter strands according to the preambles of claims 1 and 13 and to a coaxial tobacco or filter strand produced using this method.
  • the preamble of claim 1 is based on a generic method, as described in DE 36 02 846 A1. In this method, two immediately consecutive strand machines are used, the first preforming an inner strand made of filler material and a casing made of web-like material and the second wrapping this immediately afterwards and without intermediate storage with a web made of an outer casing material and a stream of smoke material.
  • the advantage of the method and the device according to the invention is first of all that when a preformed strand coming from the first production machine is stored in a memory, it is then emptied again from the memory at the appropriate time and further in the second production machine To be processed into the coaxial smokable article, a decoupling of the two manufacturing machines is possible, which leads to a decisive increase in the overall efficiency of the two manufacturing machines, since even in the event of a malfunction of one of the machines, further processing of the material is possible, both with the first as well as in the second manufacturing machine.
  • strand machines If a preformed strand that comes from the first production machine is stored in a memory in order to be emptied from the memory again at the appropriate time and further processed in the second production machine to form the coaxial smokable article, then the two production machines can be decoupled leading to a significant increase in overall efficiency of the two manufacturing machines leads, which will be referred to as strand machines in the following.
  • the preformed strand can be stored independently, solely following gravity, in the memory which is rotated about its longitudinal axis.
  • the subsequent unloading of the preformed strand from the store is made considerably easier in that, by avoiding intertwining or crosswise overlapping strand turns of a layer, breaks in the preformed strand are prevented and natural vibrations of the strand are reduced.
  • deflection devices in particular deflection rollers and / or transport rollers, in such a way that the preformed strand can be lowered into the memory from above.
  • control device In order to be able to store different diameters of the prefabricated strand in an orderly manner in the memory, it is advantageous if the control device also makes the change in the rotational speed of the memory dependent on the radius dependent on the diameter of the prefabricated strand. This has the advantage that the method according to the invention can be used even more variably.
  • the preformed strand can be stored in the memory in an even more orderly manner if it is introduced into the memory in such a way that the storage area in the memory corresponds to a theoretically calculated, currently valid point of a spiral in the memory, the calculation parameters for the spirals and others. consist of the strand thickness, the minimum and maximum diameter of the storage and the storage speed.
  • the storage device can have an arm that is driven by a motor and is displaceably mounted along the radius of the storage device and that is provided with a guide rail. The motor drive of the arm is supplied with control pulses by a control device.
  • a body When loading, a body is provided in the store, which can later be removed from the store. This then creates a cavity through which a later unloading process can easily be carried out. This avoids that the strand is designed with a too narrow radius, which could tear or break. So this body serves as a kind of coil core.
  • the storage device When unloading, the storage device can be operated essentially at a constant rotational speed, although, of course, changing rotational speeds can also be used.
  • changing rotational speeds can also be used.
  • the strand is removed from the storage via a guide arranged above the storage.
  • the guide can consist of a hollow cylinder which narrows conically towards the center and widens again from the center, which can "strip off" the natural vibrations of the prefabricated strand that is passed through.
  • the prefabricated strand removed from the memory can be deflected, for example, via a roller. This role can be held by a weight or pressure sensitive measuring device. As soon as the tensile force acting on the prefabricated strand increases, this is indicated by the weight- or pressure-sensitive measuring device, which forwards the measured value to a control device.
  • the control device now supplies a control pulse to the motor that rotates the accumulator, which causes the motor and thus the accumulator to rotate faster, thereby reducing the tensile force loading the prefabricated strand.
  • the tensile force can of course also be increased if the measuring device detects an impermissible drop in the tensile force acting on the prefabricated strand.
  • Such a configuration has the advantage that the prefabricated Strand that has different transport properties, such as diameter, weight per unit length and the like. can always run into the format of the second strand machine under the same conditions. This measure guarantees a uniform quality of the process or device product.
  • the tensile force acting on the strand can still be controlled by deflecting the deflection roller to a greater or lesser extent.
  • the unloading of the prefabricated strand can additionally be made more uniform in that the unloading device is tracked within predetermined limit values in accordance with the fill level of the store or the distance between the guide and the take-off point.
  • the guide device can be raised or lowered by a motor, or the height of the bottom of the storage device can be moved.
  • sensors can be provided in the reservoir at certain heights, which measure the current fill level. Based on the measured values, a controlled motor, which is coupled to the unloading or guiding device, can make the necessary adjustments to the fill level.
  • each turntable should have the counter coupling belonging to the coupling on the storage device in order to be able to realize the above-mentioned advantage.
  • a drive shaft can also be provided, onto which the accumulator for loading or unloading is placed or plugged, the drive shaft also having a counterpart to the coupling on the accumulator.
  • first strand machine 20 and the second strand machine 40 are designed essentially as is known from DE-OS 36 02 846.
  • the reference numeral 20 designates a first strand machine which produces a preformed strand from a filler material and a first casing.
  • Devices for transporting, lifting and depositing the preformed strand 12 into a memory 10 are indicated by the reference numerals 22 and 14. These are essentially conveyor rollers 22, as well as transport rollers or conveyor rollers 14 for lifting or depositing the preformed strand 12 into the store 10.
  • the store 10 is a barrel-like container, the storage volume of which is given towards the inside of the container by a wall 44 or through a body 45 and towards the outside of the container through a peripheral wall 46.
  • the body 45 can be removed from the memory 10.
  • the spiral-shaped layers of the preformed strand 12 laid out in the memory 10 are indicated by the reference symbol 12a.
  • the bottom 48 of the memory 10 can be moved in height.
  • the storage height or the height difference between the loading device 14 and the current position of the preformed strand can be kept constant during the storage process of the preformed strand 12 in the store 10. This possibility can also be used during the unloading process.
  • a motor 16 which is controlled by a control device 18 via a control line 26, causes the memory 10 to rotate about its vertical axis.
  • the speed at which the memory 10 is rotated by the motor 16 is variable and depends on the production parameters of the strand machine 20, which are transmitted to the control device 18 via a data line 24 for evaluation and determination of the necessary rotational speed.
  • the data used to determine the speed of rotation exist e.g. from the production speed at which the preformed strand 12 runs out of the strand machine 20 or with which the preformed strand 12 is transported and deposited, and the diameter of the preformed strand 12.
  • the dimensions of the memory 10 also go into the calculation of the currently valid one Speed.
  • the memory 10 can be provided with a clutch, not shown here, with which it is placed, for example, on a turntable which is provided with the counterpart for coupling the memory 10.
  • the turntable is driven by the motor 16. It is also possible to establish the mechanical and motor connection between the motor 16 and the To produce memory 10 by a connecting shaft on which said coupling part is provided.
  • Such couplings are preferably designed as quick couplings.
  • the preformed strand 12 runs out of the strand machine 20 in the direction of arrow 50 from the strand machine.
  • Corresponding measuring devices in the strand machine 20 continuously provide data about the production speed and production parameters of the preformed strand via the data line 24 to the control device 18.
  • the preformed strand 12 is fed via one or more transport or conveyor rollers 22 in the direction of arrow 50 to the loading device 14 funded.
  • the preformed strand 12 can also be raised.
  • the strand 12 is then lowered into the rotating accumulator 10.
  • the strand 12 is deposited in layers in a spiral from the outside in and then from the inside out, etc.
  • the speed of rotation of the store 10 is adjusted so that the product of the speed of the store 10 and its current storage volume is equal to the production speed or conveying speed with which the preformed strand 12 is manufactured by the strand machine 20 or transported by it to the store 10 becomes.
  • the diameter of the preformed strand is also used to determine the currently valid deposit radius, which can be done quite simply by addition or subtraction. Additional safety distances between the individual strand turns of a layer can also be taken into account.
  • FIG. 2 contains all the essential features of the embodiment according to FIG. 1.
  • an arm 28 is provided here, which is connected to a Guide 32 is equipped.
  • the arm 28 is displaceable in the radial direction of the rotationally symmetrical accumulator 10 via a motor 16a.
  • the displacement of the arm 28 and thus the guide 32 is controlled so that the preformed strand 12 can be deposited vertically from top to bottom in the memory 10.
  • the controller 18 receives information about the current position of the guide 32 or the arm 28 via a data line 24a.
  • the control device 18 is able to use the data about the thickness of the strand 12 and the rotational speed as well as the dimensions of the memory 10 Time to calculate theoretically valid storage radius in memory 10.
  • the preformed strand 12a stored in the memory 10 on the one hand forms layers that are as dense as possible, but on the other hand there are no overlaps between adjacent strand turns. This is necessary in order to utilize the storage capacity of the memory 10 as completely as possible and to avoid entanglement of the spiral windings or the layers due to the large distances between the spiral windings or layers. Incorrect loading results can damage or even tear off the preformed strand when the storage device 10 is subsequently unloaded.
  • control pulses resulting from the calculation by the control device 18 are transmitted via a data line 26a to the motor 16a, which sets the currently required position of the arm 28 or the guide 32.
  • the sensors pass on their measurement signals via data lines 24c to a control device 18a (this function could also be performed by the control device 18).
  • the control device 18a gives control pulses to a motor 16b, which moves the guide 32 up and down via a holding device 30 which is installed on the arm 28.
  • This configuration makes it possible to place the preformed strand 12 in the store 10 even more precisely. It would also be conceivable to provide further guides or even a longer guide tube between the part 14 of the loading device and the guide 32.
  • the memory 10 can be exchanged for an empty memory 10 after it is completely filled.
  • the stores 10 can then be stored as required or can also be passed on to a second strand machine 40 or an associated unloading device.
  • the part of an apparatus for producing coaxial tobacco or filter strands shown in FIG. 4 contains a second strand machine 40, in which the preformed strand 12 is provided with filter or smokable material and a further covering.
  • the preformed strand 12 is first removed from the memory 10.
  • the speed of rotation can be constant or variable.
  • the guide 32 'of the unloading device is designed such that natural vibrations of the preformed strand 12 can be reduced. This is necessary because the strand 12 has the rotational movement of the memory 10. This, seen from above, the spiral natural vibration of the strand 12 is "stripped" by a correspondingly shaped guide 32 'and thus almost eliminated.
  • the guide 32 ′ is provided with a passage which tapers continuously in the transport direction and is arranged on the vertical central axis of the store 10. The passage can widen again after it has reached a certain degree of rejuvenation.
  • the inner profile of the guide part 32 'can also have a hyperbolic shape or the like. to have.
  • the memory 10 is coupled to the motor 16 and the end of the preformed strand 12 is threaded into the unloading device or into the strand machine 40.
  • the threading path runs through the guide 32 ', over the transport rollers 14a, 22 and finally into the second strand machine 40.
  • the second strand machine 40 regulates the rotational speed of the memory 10 essentially via its processing speed by means of the control device 18 and the motor 16.
  • the memory 10 is decoupled from the motor 16 and another filled reservoir 10 is connected to the motor 16 for further processing of the preformed strand 12 stored therein to the unloading device 32 ', 14a, 22 in order to be further processed in the strand machine 40.
  • the embodiment shown in FIG. 5 corresponds essentially to the embodiment according to FIG. 4 and is equipped with a measuring device for detecting the tensile force acting on the preformed strand 12.
  • the measuring device has a movable roller 34a which bears against a resilient sensor element 34b presses. This part 34b can register the compressive force with which the preformed strand 12 acts on the roller 34a. Since this compressive force of the strand 12 is proportional to the tensile force that acts on the preformed strand 12, the tensile force can be detected.
  • control device 18 sends control pulses to the drive motor 16, whereupon the memory 10 is rotated at a higher speed and thus the preformed strand 12 is relieved.
  • the measuring part 34b it is possible to supplement the measuring part 34b with a deflecting part which, depending on the acceptable tensile force, deflects the roller 34a either in a direction perpendicular to the direction of conveyance of the strand 12, or if the tensile force becomes too small, which could cause the strand 12 to sag , the tensile force is increased by a greater deflection of the roller 34a.
  • a deflecting part which, depending on the acceptable tensile force, deflects the roller 34a either in a direction perpendicular to the direction of conveyance of the strand 12, or if the tensile force becomes too small, which could cause the strand 12 to sag , the tensile force is increased by a greater deflection of the roller 34a.
  • control data necessary for this are determined by the controller 18.
  • the embodiment shown in FIG. 6 has essentially the same features as the embodiments shown in FIGS. 4 and 5.
  • the embodiment according to FIG. 6, however, contains the possibility of moving the guide 32 ′ in height in order to ensure that the guide properties and thus the loads acting on the preformed strand 12 remain unchanged regardless of the fill level of the store 10.
  • sensors 42 are attached to the accumulator 10 at different heights.
  • the sensors 42 receive a reflection signal, possibly from an additional light source, they emit a corresponding signal to the controller 18a, which thus knows that the spiral of the strand 12 is no longer present at the height of the corresponding sensor or sensors 42.
  • the sensors 42 can be mounted on a fixed bar, for example on the housing of the motor 16, which has the advantage that not every individual memory 10 has to be provided with sensors and there are therefore no problems with the handling of control lines , for example via sliding contacts. This function could also be performed with a single sensor that can be moved along the bar.
  • the coaxial tobacco or filter strand which can be seen from FIG. 7 and which is produced by the method according to the invention or with the device according to the invention is generally identified by reference number 100.
  • This tobacco or filter strand 100 consists of an inner strand 110 produced in the first strand machine 20 from a filler material. This filler is surrounded by a first wrapper 112, for example a paper.
  • the inner strand 110 is surrounded by filterable or smokable material 104.
  • the inner strand 110 is arranged coaxially in the outer strand.
  • the indirect coupling according to the invention of the first strand machine 20 to the second strand machine 40 via storage 10 and loading and unloading devices leads to an overall efficiency of 75%, although in the example given here the respective efficiency is only 75% in the strand machine.

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

Abstract

The coaxial strands of tobacco or filter material are formed using a first machine (20) to produce the first strand from strip-type wrapping material and a strand of filler material. A second machine produces the coaxial strand from the first strand, second strip-type wrapping material, and a strand of filler material. - The strand (12) from the first machine is held in a buffer storage unit before further processing in the second machine. It is pref. deposited in a storage vessel (10), from which it is extracted and fed to the second machine.

Description

Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Herstellung koaxialer Tabak- oder Filterstränge nach den Oberbegriffen der Ansprüche 1 bzw. 13 sowie einen mit diesem Verfahren hergestellten koaxialen Tabak- oder Filterstrang.The invention relates to a method and a device for producing coaxial tobacco or filter strands according to the preambles of claims 1 and 13 and to a coaxial tobacco or filter strand produced using this method.

Der Oberbegriff des Patentanspruchs 1 geht von einem gattungsgemäßen Verfahren aus, wie es in der DE 36 02 846 A1 beschrieben ist. Bei diesem Verfahren werden zwei unmittelbar aufeinanderfolgende Strangmaschinen verwendet, wobei die erste einen inneren Strang aus Füllmaterial und einer Hülle aus bahnartigem Material vorformt und die zweite diesen unmittelbar danach und ohne Zwischenspeicherung mit einer Bahn aus einem äußeren Umhüllungsmaterial und einem Strom eines Rauchmaterials umhüllt.The preamble of claim 1 is based on a generic method, as described in DE 36 02 846 A1. In this method, two immediately consecutive strand machines are used, the first preforming an inner strand made of filler material and a casing made of web-like material and the second wrapping this immediately afterwards and without intermediate storage with a web made of an outer casing material and a stream of smoke material.

Der Hauptnachteil dieses Verfahrens und der damit beschriebenen Vorrichtung liegt darin, daß beim Ausfall oder bei Störungen einer der Strangmaschinen beide Maschinen abgeschaltet werden müssen, was sich sehr ungünstig auf den Wirkungsgrad der Anlage auswirkt.The main disadvantage of this method and the device described with it is that in the event of failure or malfunction of one of the strand machines, both machines must be switched off, which has a very unfavorable effect on the efficiency of the system.

Aus der britischen Patentanmeldung GB 2 069 310 ist ein Verfahren bekannt, bei dem ein Strom aus Füllmaterial von einem bahnartigen Tabakmaterial umhüllt wird, ohne daß der Strom aus Füllmaterial mit einem gesonderten Umhüllungsmaterial umgeben wird. Das bahnartige Tabakmaterial wird von einer Rolle abgerollt. Nachteilig wirkt sich hier aus, daß die Herstellung schon wegen des Fehlens einer Umhüllung für den ersten Strom aus Füllmaterial nicht dadurch entkoppelt werden kann, daß dieser Strom zwischengespeichert wird. Sowohl beim Ausfall der Einheit, welche das bahnartige Tabakmaterial zuführt als auch beim Ausfall der Zuführungseinheit für das Füllmaterial muß die gesamte Anlage, wie sie in Fig. 1 dargestellt ist, angehalten werden und kann nicht modular mittels gesicherter Betriebsmaterialien weiter betrieben werden.From the British patent application GB 2 069 310 a method is known in which a stream of filler material is enveloped by a web-like tobacco material without the stream of filler material being surrounded by a separate wrapping material. The web-like tobacco material is unrolled from a roll. The disadvantage here is that the production cannot be decoupled, simply because there is no casing for the first stream of filler material, in that this stream is temporarily stored. Both in the event of the failure of the unit which feeds the web-like tobacco material and the failure of the feed unit for the filling material, the entire system, as shown in FIG. 1, must be stopped and cannot be operated in a modular manner by means of secured operating materials.

Aus der europäischen Patentanmeldung mit der Veröffentlichungsnummer 0 081 446 A1 sind ein Verfahren und eine Vorrichtung zum Rollen von Spulen zur Ausrüstung elektrischer Apparate bekannt. Das hier gezeigte lagenweise spiralförmige Aufrollen dient der Herstellung von elektrischen Spulen für Transformatoren und beschreibt die Aufwicklung eines elektrischen Leiters um einen Spulenträger. Hierbei ist nicht vorgesehen, die angefertigte Spule zur Weiterverarbeitung wieder zu entrollen, um somit gespeichertes Material einer weiteren Verarbeitung im wieder gerade ausgerichteten Zustand zuzuführen.From the European patent application with the publication number 0 081 446 A1 a method and a device for rolling coils for the equipment of electrical devices are known. The layered spiral winding shown here is used to manufacture electrical coils for transformers and describes the winding of an electrical conductor around a coil carrier. In this case, it is not intended to unroll the manufactured reel for further processing in order to thus feed stored material for further processing in the straightened state.

Es ist die Aufgabe der vorliegenden Erfindung, ein Verfahren und eine Vorrichtung zur Herstellung koaxialer Tabak- oder Filterstränge vorzuschlagen, die den oben genannten Nachteil des Standes der Technik nicht mehr aufweisen. Insbesondere sollen ein Verfahren und eine Vorrichtung der oben genannten Gattung geschaffen werden, welche auch bei einem Ausfall einer Herstellungsmaschine die Möglichkeit der Weiterverwendung der anderen Herstellungsmaschine geben, um so das System zu entkoppeln und effizienter zu machen.It is the object of the present invention to propose a method and a device for producing coaxial tobacco or filter strands which no longer have the above-mentioned disadvantage of the prior art. In particular, a method and a device of the above-mentioned type are to be created which, even in the event of a failure of one production machine, give the possibility of further use of the other production machine in order to decouple the system and make it more efficient.

Diese Aufgabe wird durch ein Verfahren und eine Vorrichtung zur Herstellung koaxialer Tabak- oder Filterstränge gelöst, wie sie in den Patentansprüchen 1 und 13 beansprucht werden.This object is achieved by a method and a device for producing coaxial tobacco or filter strands, as claimed in claims 1 and 13.

Die Unteransprüche betreffen bevorzugte Ausgestaltungsmöglichkeiten des Verfahrens sowie der Vorrichtung gemäß der vorliegenden Erfindung.The subclaims relate to preferred design options for the method and the device according to the present invention.

Der Vorteil des Verfahrens und der Vorrichtung gemäß der Erfindung liegt zunächst darin, daß, wenn ein vorgeformter Strang, der von der ersten Herstellungsmaschine kommt, in einem Speicher abgelegt wird, um dann zu gegebener Zeit wieder aus dem Speicher entleert und in der zweiten Herstellungsmaschine weiter zu dem koaxialen rauchbaren Artikel verarbeitet zu werden, eine Entkopplung der beiden Herstellungsmaschinen möglich ist, was zu einer entscheidenden Steigerung des Gesamtwirkungsgrades der beiden Herstellungsmaschinen führt, da auch im Falle einer Störung einer der Maschinen eine Weiterverarbeitung des Materials möglich ist, und zwar sowohl bei der ersten als auch bei der zweiten Herstellungsmaschine.The advantage of the method and the device according to the invention is first of all that when a preformed strand coming from the first production machine is stored in a memory, it is then emptied again from the memory at the appropriate time and further in the second production machine To be processed into the coaxial smokable article, a decoupling of the two manufacturing machines is possible, which leads to a decisive increase in the overall efficiency of the two manufacturing machines, since even in the event of a malfunction of one of the machines, further processing of the material is possible, both with the first as well as in the second manufacturing machine.

Das lagenweise und spiralförmige Ablegen des vorgeformten Strangs im Inneren des Speichers auswärts bzw. vom Äußeren des Speichers einwärts stellt eine wesentliche Erleichterung der späteren Entladung des vorgeformten Stranges aus dem Speicher dar, da durch die Vermeidung von Verschlingungen oder kreuzweise übereinanderliegenden Strangwindungen einer Lage Abrisse und Eigenschwingungen des vorgeformten Strangs verhindert werden können. Auch können lagenweise spiralförmig abgelegte Stränge besonders gut, z.B. als Stapel, platzsparend gelagert werden.Laying the preformed strand in layers in the interior of the store outwards or from the outside of the store inwards is a significant relief for the later unloading of the preformed strand from the store, since tearing and self-oscillating strand turns of a layer cause tears and natural vibrations to be avoided of the preformed strand can be prevented. Layers of spirally laid strands can also be particularly good, e.g. can be stored as a stack to save space.

Wird ein vorgeformter Strang, der von der ersten Herstellungsmaschine kommt, in einem Speicher abgelegt, um dann zu gegebener Zeit wieder aus dem Speicher entleert und in der zweiten Herstellungsmaschine weiter zu dem koaxialen rauchbaren Artikel verarbeitet zu werden, so ist eine Entkopplung der beiden Herstellungsmaschinen möglich, die zu einer entscheidenden Steigerung des Gesamtwirkungsgrades der beiden Herstellungsmaschinen führt, die im folgenden als Strangmaschinen bezeichnet werden sollen.If a preformed strand that comes from the first production machine is stored in a memory in order to be emptied from the memory again at the appropriate time and further processed in the second production machine to form the coaxial smokable article, then the two production machines can be decoupled leading to a significant increase in overall efficiency of the two manufacturing machines leads, which will be referred to as strand machines in the following.

In einer besonders einfachen Verfahrensvariante kann der vorgeformte Strang selbständig, allein der Schwerkraft folgend, in dem Speicher abgelegt werden, der um seine Längsachse gedreht wird.In a particularly simple method variant, the preformed strand can be stored independently, solely following gravity, in the memory which is rotated about its longitudinal axis.

Wird der vorgeformte Strang lagenweise spiralförmige abgelegt, so wird die spätere Entladung des vorgeformten Stranges aus dem Speicher insofern wesentlich erleichtert, als durch die Vermeidung von Verschlingungen oder kreuzweise übereinander liegenden Strangwindungen einer Lage Abrisse des vorgeformten Stranges verhindert und Eigenschwingungen des Stranges gemindert werden.If the preformed strand is deposited in layers in a spiral, the subsequent unloading of the preformed strand from the store is made considerably easier in that, by avoiding intertwining or crosswise overlapping strand turns of a layer, breaks in the preformed strand are prevented and natural vibrations of the strand are reduced.

Um die geordnete Ablage des vorgeformten Stranges im Speicher zusätzlich sicherzustellen, ist es vorteilhaft, den vorgeformten Strang über Umlenkeinrichtungen, insbesondere Umlenkrollen und/oder Transportrollen derart anzuheben, daß der vorgeformte Strang von oben in den Speicher abgesenkt werden kann.In order to additionally ensure the orderly storage of the preformed strand in the memory, it is advantageous to raise the preformed strand via deflection devices, in particular deflection rollers and / or transport rollers, in such a way that the preformed strand can be lowered into the memory from above.

Um die vom momentanen Ablageradius abhängige Ablagelänge des vorgeformten Stranges pro Speicherdrehung an die Herstellungsgeschwindigkeit der ersten Strangmaschine anzupassen, ist es vorteilhaft, wenn eine Steuervorrichtung vorhanden ist, mit der die Drehgeschwindigkeit des Speichers so gesteuert werden kann, daß bei der Ablage nahe der Speicherachse der Speicher schneller dreht, während er mit zunehmendem Ablageradius langsamer dreht und umgekehrt.In order to adapt the storage length of the preformed strand per storage rotation, which is dependent on the current storage radius, to the production speed of the first strand machine, it is advantageous if there is a control device with which the rotation speed of the storage can be controlled so that the storage near the storage axis turns faster, while it rotates more slowly with increasing deposit radius and vice versa.

Um unterschiedliche Durchmesser des vorgefertigten Stranges geordnet im Speicher ablegen zu können, ist es vorteilhaft, wenn die Steuervorrichtung die vom Radius abhängige Änderung der Drehgeschwindigkeit des Speichers zusätzlich von dem Durchmesser des vorgefertigten Stranges abhängig macht. Dieses hat den Vorteil, daß das erfindungsgemäße Verfahren noch variabler anwendbar ist.In order to be able to store different diameters of the prefabricated strand in an orderly manner in the memory, it is advantageous if the control device also makes the change in the rotational speed of the memory dependent on the radius dependent on the diameter of the prefabricated strand. This has the advantage that the method according to the invention can be used even more variably.

Der vorgeformte Strang läßt sich noch geordneter im Speicher ablegen, wenn er derart in den Speicher eingeführt wird, daß der Ablagebereich im Speicher einem theoretisch berechneten, momentan gültigen Punkt einer Spirale im Speicher entspricht, wobei die Berechnungsparameter für die Spiralen u.a. aus der Strangdicke, dem minimalen und dem maximalen Durchmesser des Speichers sowie der Ablagegeschwindigkeit bestehen. Die Ablagevorrichtung kann dabei einen mit einem Motor angetriebenen, längs des Radius des Speichers verschiebbar gelagerten Arm aufweisen, der mit einer Führungsschiene versehen ist. Der Motorantrieb des Armes wird von einer Steuervorrichtung mit Steuerimpulsen versorgt.The preformed strand can be stored in the memory in an even more orderly manner if it is introduced into the memory in such a way that the storage area in the memory corresponds to a theoretically calculated, currently valid point of a spiral in the memory, the calculation parameters for the spirals and others. consist of the strand thickness, the minimum and maximum diameter of the storage and the storage speed. The storage device can have an arm that is driven by a motor and is displaceably mounted along the radius of the storage device and that is provided with a guide rail. The motor drive of the arm is supplied with control pulses by a control device.

Bei der Beladung ist in dem Speicher ein Körper vorgesehen, der dem Speicher später entnommen werden kann. Dadurch entsteht dann ein Hohlraum über den ein späterer Entladevorgang leicht vorgenommen werden kann. Hierdurch wird vermieden, daß der Strang mit einem zu engen Radius ausgelegt wird, wodurch er einreißen oder brechen könnte. Dieser Körper dient also als eine Art Spulenkern.When loading, a body is provided in the store, which can later be removed from the store. This then creates a cavity through which a later unloading process can easily be carried out. This avoids that the strand is designed with a too narrow radius, which could tear or break. So this body serves as a kind of coil core.

Bei der Entladung kann der Speicher im wesentlichen mit konstanter Drehgeschwindigkeit betrieben werden, wobei natürlich auch wechselnde Drehgeschwindigkeiten verwenbar sind. Bei der Entladung auftretende Eigenschwingungen sind nicht so relevant wie beim Beladen des Speichers, da diese Eigenschwingungen größten Teils von der Transportvorrichtung vor der zweiten Strangmaschine absorbiert werden.When unloading, the storage device can be operated essentially at a constant rotational speed, although, of course, changing rotational speeds can also be used. Are natural vibrations that occur during discharge not as relevant as when loading the storage, since these natural vibrations are largely absorbed by the transport device in front of the second strand machine.

Um die Eigenschwingungen des aus dem Speicher abgeführten, vorgefertigten Stranges weiterhin zu eliminieren, wird der Strang über eine oberhalb des Speichers angeordnete Führung aus dem Speicher entnommen. Die Führung kann dabei auf einem sich konisch zur Mitte hin verengenden und von der Mitte aus wieder erweiternden Hohlzylinder bestehen, der die Eigenschwingungen des hindurchgeführten, vorgefertigten Stranges "abstreifen" kann.In order to further eliminate the natural vibrations of the prefabricated strand removed from the storage, the strand is removed from the storage via a guide arranged above the storage. The guide can consist of a hollow cylinder which narrows conically towards the center and widens again from the center, which can "strip off" the natural vibrations of the prefabricated strand that is passed through.

Um die Zugbelastungen, die auf den vorgefertigten Strang einwirken und diesen beschädigen oder sogar zerreißen können, zu minimieren, ist es vorteilhaft, die Drehgeschwindigkeit, mit der der Speicher gedreht wird, zusätzlich über die Zugkraft, die auf der vorgefertigten Strang einwirkt, zu steuern. Dabei kann der aus dem Speicher entnommene vorgefertigte Strang z.B. über eine Rolle umgelenkt werden. Diese Rolle kann über eine gewichts- oder druckempfindliche Meßeinrichtung gehaltert sein. Sobald sich nun die Zugkraft, die auf den vorgefertigten Strang einwirkt, verstärkt, wird dies von der gewichts- bzw. druckempfindlichen Meßeinrichtung angezeigt, die den gemessenen Wert an eine Steuereinrichtung weitergibt. Die Steuereinrichtung führt nun dem Motor, der den Speicher dreht, einen Steuerimpuls zu, der den Motor und damit den Speicher schneller drehen läßt, wodurch die den vorgefertigten Strang belastende Zugkraft verringert wird. Umgekehrt kann natürlich auch die Zugkraft verstärkt werden, falls die Meßeinrichtung einen unzulässigen Abfall der auf den vorgefertigten Strang einwirkenden Zugkraft feststellt. Eine derartige Ausgestaltung hat den Vorteil, daß der vorgefertigte Strang, der unterschiedliche Transporteigenschaften, wie z.B. Durchmesser, Gewicht pro Längeneinheit u.dgl. aufweisen kann, immer unter gleichen Bedingungen in das Format der zweiten Strangmaschine einlaufen kann. Diese Maßnahme garantiert eine gleichmäßige Qualität des Verfahrens- bzw. Vorrichtungsproduktes.In order to minimize the tensile loads that act on the prefabricated strand and can damage or even tear it, it is advantageous to additionally control the rotational speed at which the accumulator is rotated via the tensile force acting on the prefabricated strand. The prefabricated strand removed from the memory can be deflected, for example, via a roller. This role can be held by a weight or pressure sensitive measuring device. As soon as the tensile force acting on the prefabricated strand increases, this is indicated by the weight- or pressure-sensitive measuring device, which forwards the measured value to a control device. The control device now supplies a control pulse to the motor that rotates the accumulator, which causes the motor and thus the accumulator to rotate faster, thereby reducing the tensile force loading the prefabricated strand. Conversely, the tensile force can of course also be increased if the measuring device detects an impermissible drop in the tensile force acting on the prefabricated strand. Such a configuration has the advantage that the prefabricated Strand that has different transport properties, such as diameter, weight per unit length and the like. can always run into the format of the second strand machine under the same conditions. This measure guarantees a uniform quality of the process or device product.

Andererseits läßt sich die Zugkraft, die auf den Strang wirkt, noch steuern, indem die Umlenkrolle mehr oder weniger stark auslenkt.On the other hand, the tensile force acting on the strand can still be controlled by deflecting the deflection roller to a greater or lesser extent.

Außerdem läßt sich die Entladung des vorgefertigten Stranges zusätzlich dadurch gleichmäßiger gestalten, daß die Entladevorrichtung entsprechend der Füllhöhe des Speichers bzw. des Abstandes zwischen Führung und Abnahmepunkt innerhalb vorgegebener Grenzwerte nachgeführt wird. Hierzu kann entweder die Führungsvorrichtung motorisch angehoben bzw. abgesenkt werden oder aber der Boden des Speichers in seiner Höhe verfahrbar sein. Zur sensorischen Erfassung der Füllhöhe des vorgefertigten Stranges können am Speicher in bestimmten Höhen Sensoren vorgesehen sein, die den momentanen Füllstand messen. Anhand der Meßwerte kann ein geregelter Motor, der an die Entlade- bzw. Führungsvorrichtung angekoppelt ist, die notwendigen Anpassungen an die Füllstandshöhe vornehmen.In addition, the unloading of the prefabricated strand can additionally be made more uniform in that the unloading device is tracked within predetermined limit values in accordance with the fill level of the store or the distance between the guide and the take-off point. For this purpose, either the guide device can be raised or lowered by a motor, or the height of the bottom of the storage device can be moved. For sensory detection of the fill level of the prefabricated strand, sensors can be provided in the reservoir at certain heights, which measure the current fill level. Based on the measured values, a controlled motor, which is coupled to the unloading or guiding device, can make the necessary adjustments to the fill level.

Um den Speicher möglichst schnell austauschen zu können, ist es von Vorteil, den Speicher mit einer Kupplung zu versehen. Hierdurch wird es bei der Verwendung von Schnellkupplungen möglich, die Zeiten zu verkürzen, die notwendig sind, um die Strangmaschinen mit leeren bzw. vollen Speichern zu bestücken.In order to be able to replace the memory as quickly as possible, it is advantageous to provide the memory with a clutch. This makes it possible, when using quick-release couplings, to shorten the times required to fill the strand machines with empty or full stores.

Für den Drehantrieb eines Speichers bei der Be- bzw. Entladung ist es vorteilhaft, jeweils mindestens einen Drehteller für beide Ladegänge vorzusehen. Jeder Drehteller sollte die zur Kupplung am Speicher gehörige Gegenkupplung aufweisen, um den vorgenannten Vorteil realisieren zu können.For the rotary drive of a storage device during loading or unloading, it is advantageous to provide at least one turntable for each of the two load paths. Each turntable should have the counter coupling belonging to the coupling on the storage device in order to be able to realize the above-mentioned advantage.

Genausogut kann statt eines Drehtellers mit einer Kupplung auch eine Antriebswelle vorgesehen sein, auf die der Speicher für die Be- bzw. Entladung aufgesetzt bzw. aufgesteckt wird, wobei die Antriebswelle auch ein Gegenstück zur Kupplung am Speicher aufweisen sollte.Instead of a turntable with a coupling, a drive shaft can also be provided, onto which the accumulator for loading or unloading is placed or plugged, the drive shaft also having a counterpart to the coupling on the accumulator.

Die Erfindung wird weiterhin in Bezug auf einige besonders vorteilhafte Ausführungsformen bzw. Verfahrensvarianten unter Bezugnahme auf die beiliegenden Figuren erläutert, wobei weitere wesentliche Merkmale und Vorteile der Erfindung offenbar werden. Es zeigen:

Fig. 1
eine sehr vereinfachte Ansicht einer ersten Strangmaschine, einer Beladevorrichtung und eines Speichers;
Fig. 2
eine Ausführungsform der erfindungsgemäßen Vorrichtung mit einer radial zum Speicher verfahrbaren Beladeeinrichtung;
Fig. 3
eine schematische Ansicht einer Ausführungsform, bei der die Beladevorrichtung zusätzlich in der Höhe verfahrbar ist;
Fig. 4
eine Ausführungsform, bei der ein zum Teil gefüllter Speicher mit einer Entladevorrichtung und einer zweiten Strangmaschine dargestellt ist;
Fig. 5
die Ausführungsform nach Fig. 4 mit einer Meßeinrichtung zum Bestimmen der Zugkraft, die auf den vorgeformten Strang einwirkt;
Fig. 6
die Ausführungsform nach Fig. 5, wobei die Entladevorrichtung zusätzlich in der Höhe verfahrbar und der Speicher mit Sensoren versehen ist; und
Fig. 7
eine perspektivische Teilschnittansicht eines Tabak- oder Filterstrangs, der nach dem erfindungsgemäßen Verfahren bzw. mit der erfindungsgemäßen Vorrichtung hergestellt worden ist.
The invention is further explained with reference to some particularly advantageous embodiments or method variants with reference to the accompanying figures, further essential features and advantages of the invention being disclosed. Show it:
Fig. 1
a very simplified view of a first strand machine, a loading device and a memory;
Fig. 2
an embodiment of the device according to the invention with a loading device which can be moved radially to the store;
Fig. 3
a schematic view of an embodiment in which the loading device is additionally movable in height;
Fig. 4
an embodiment in which a partially filled memory is shown with an unloading device and a second strand machine;
Fig. 5
the embodiment of Figure 4 with a measuring device for determining the tensile force acting on the preformed strand.
Fig. 6
the embodiment of Figure 5, wherein the unloading device is additionally movable in height and the memory is provided with sensors. and
Fig. 7
a partial perspective sectional view of a tobacco or filter strand, which has been produced by the method according to the invention or with the device according to the invention.

Vorab sei angemerkt, daß die erste Strangmaschine 20 und die zweite Strangmaschine 40 im wesentlichen so ausgebildet sind, wie aus der DE-OS 36 02 846 bekannt ist.It should be noted in advance that the first strand machine 20 and the second strand machine 40 are designed essentially as is known from DE-OS 36 02 846.

Aus der Darstellung gemäß Fig. 1 ist die Vorrichtung zur Ausführung insbesondere des beschriebenen Verfahrens nur zum Teil ersichtlich. Mit dem Bezugszeichen 20 ist eine erste Strangmaschine gekennzeichnet, die einen vorgeformten Strang aus einem Füllmaterial und einer ersten Umhüllung herstellt. Vorrichtungen zum Transportieren, zum Anheben und zum Ablegen des vorgeformten Stranges 12 in einen Speicher 10 sind durch die Bezugszeichen 22 und 14 angedeutet. Dabei handelt es sich im wesentlichen um Förderrollen 22, sowie um Transportrollen bzw. Förderrollen 14 zum Anheben bzw. zum Ablegen des vorgeformten Stranges 12 in den Speicher 10.1 shows only partially the device for executing the described method. The reference numeral 20 designates a first strand machine which produces a preformed strand from a filler material and a first casing. Devices for transporting, lifting and depositing the preformed strand 12 into a memory 10 are indicated by the reference numerals 22 and 14. These are essentially conveyor rollers 22, as well as transport rollers or conveyor rollers 14 for lifting or depositing the preformed strand 12 into the store 10.

Bei dem Speicher 10 handelt es sich um einen tonnenartigen Behälter, dessen Lagervolumen zum Behälterinneren hin durch eine Wandung 44 bzw. durch einen Körper 45 und zum Behälteräußeren hin durch eine Umfangswand 46 gegeben ist.The store 10 is a barrel-like container, the storage volume of which is given towards the inside of the container by a wall 44 or through a body 45 and towards the outside of the container through a peripheral wall 46.

Der Körper 45 läßt sich aus dem Speicher 10 entfernen. Die im Speicher 10 ausgelegten, spiralförmigen Lagen des vorgeformten Stranges 12 sind durch das Bezugszeichen 12a angedeutet. Der Boden 48 des Speichers 10 ist in der Höhe verfahrbar. Dadurch läßt sich während des Ablagevorganges des vorgeformten Stranges 12 im Speicher 10 die Ablagehöhe bzw. der Höhenunterschied zwischen der Beladevorrichtung 14 und der momentanen Lage des vorgeformten Stranges konstant halten. Diese Möglichkeit läßt sich auch beim Entladevorgang ausnutzen.The body 45 can be removed from the memory 10. The spiral-shaped layers of the preformed strand 12 laid out in the memory 10 are indicated by the reference symbol 12a. The bottom 48 of the memory 10 can be moved in height. As a result, the storage height or the height difference between the loading device 14 and the current position of the preformed strand can be kept constant during the storage process of the preformed strand 12 in the store 10. This possibility can also be used during the unloading process.

Ein von einer Steuereinrichtung 18 über eine Steuerleitung 26 gesteuerter Motor 16 bewirkt die Drehbewegung des Speichers 10 um seine vertikale Achse. Die Geschwindigkeit, mit der der Speicher 10 vom Motor 16 aus gedreht wird, ist variabel und hängt von den Herstellungsparametern der Strangmaschine 20 ab, die zur Auswertung und zur Bestimmung der notwendigen Drehgeschwindigkeit über eine Datenleitung 24 an die Steuereinrichtung 18 übermittelt werden. Die Daten, die zur Bestimmung der Drehgeschwindigkeit herangezogen werden, bestehen z.B. aus der Fertigungsgeschwindigkeit, mit der der vorgeformte Strang 12 aus der Strangmaschine 20 ausläuft bzw. mit der der vorgeformte Strang 12 transportiert und abgelegt wird, und dem Durchmesser des vorgeformten Stranges 12. Außerdem gehen noch die Abmessungen des Speichers 10 bei der Berechnung der momentan gültigen Drehgeschwindigkeit ein.A motor 16, which is controlled by a control device 18 via a control line 26, causes the memory 10 to rotate about its vertical axis. The speed at which the memory 10 is rotated by the motor 16 is variable and depends on the production parameters of the strand machine 20, which are transmitted to the control device 18 via a data line 24 for evaluation and determination of the necessary rotational speed. The data used to determine the speed of rotation exist e.g. from the production speed at which the preformed strand 12 runs out of the strand machine 20 or with which the preformed strand 12 is transported and deposited, and the diameter of the preformed strand 12. In addition, the dimensions of the memory 10 also go into the calculation of the currently valid one Speed.

Der Speicher 10 kann mit einer hier nicht dargestellten Kupplung versehen sein, mit der er z.B. auf einem Drehteller abgesetzt wird, der mit dem Gegenstück zur Kupplung des Speichers 10 versehen ist. Der Drehteller wird von dem Motor 16 angetrieben. Es ist auch möglich, die mechanische und motorische Verbindung zwischen dem Motor 16 und dem Speicher 10 durch eine Verbindungswelle herzustellen, an der das genannte Kupplungsteil vorgesehen ist. Derartige Kupplungen werden bevorzugt als Schnellkupplungen ausgebildet.The memory 10 can be provided with a clutch, not shown here, with which it is placed, for example, on a turntable which is provided with the counterpart for coupling the memory 10. The turntable is driven by the motor 16. It is also possible to establish the mechanical and motor connection between the motor 16 and the To produce memory 10 by a connecting shaft on which said coupling part is provided. Such couplings are preferably designed as quick couplings.

Im Betrieb läuft der vorgeformte Strang 12 aus der Strangmaschine 20 in Richtung des Pfeiles 50 aus der Strangmaschine heraus. Dabei geben entsprechende Meßeinrichtungen in der Strangmaschine 20 permanent Daten über die Herstellungsgeschwindigkeit und Herstellungsparameter des vorgeformten Stranges über die Datenleitung 24 an die Steuereinrichtung 18. Der vorgeformte Strang 12 wird über eine bzw. mehrere Transport- bzw. Förderrollen 22 in Richtung des Pfeiles 50 zur Beladevorrichtung 14 gefördert. Dabei kann der vorgeformte Strang 12 auch angehoben werden.In operation, the preformed strand 12 runs out of the strand machine 20 in the direction of arrow 50 from the strand machine. Corresponding measuring devices in the strand machine 20 continuously provide data about the production speed and production parameters of the preformed strand via the data line 24 to the control device 18. The preformed strand 12 is fed via one or more transport or conveyor rollers 22 in the direction of arrow 50 to the loading device 14 funded. The preformed strand 12 can also be raised.

Der Strang 12 wird anschließend in den sich drehenden Speicher 10 hinabgelassen. Im Speicher 10 wird der Strang 12 lagenweise spiralförmig von außen nach innen und anschließend von innen nach außen usw. abgelegt. Die Drehgeschwindigkeit des Speichers 10 wird dabei so angepaßt, daß das Produkt aus der Drehzahl des Speichers 10 und dessen momentanen Ablageumfang gleich der Herstellungsgeschwindigkeit bzw. Fördergeschwindigkeit ist, mit der der vorgeformte Strang 12 von der Strangmaschine 20 hergestellt bzw. von dieser zum Speicher 10 transportiert wird. Dabei wird auch der Durchmesser des vorgeformten Stranges zur Bestimmung des momentan gültigen Ablageradiusses verwendet, was ganz einfach durch Addition bzw. Substraktion geschehen kann. Es können auch noch zusätzliche Sicherheitsabstände zwischen den einzelnen Strangwindungen einer Lage berücksichtigt werden.The strand 12 is then lowered into the rotating accumulator 10. In the memory 10, the strand 12 is deposited in layers in a spiral from the outside in and then from the inside out, etc. The speed of rotation of the store 10 is adjusted so that the product of the speed of the store 10 and its current storage volume is equal to the production speed or conveying speed with which the preformed strand 12 is manufactured by the strand machine 20 or transported by it to the store 10 becomes. The diameter of the preformed strand is also used to determine the currently valid deposit radius, which can be done quite simply by addition or subtraction. Additional safety distances between the individual strand turns of a layer can also be taken into account.

Die aus Fig. 2 ersichtliche Ausführungsform enthält alle wesentlichen Merkmale der Ausführungsform nach Fig. 1. Zusätzlich ist hier ein Arm 28 vorgesehen, der mit einer Führung 32 ausgestattet ist. Der Arm 28 ist in der radialen Richtung des rotationssymmetrischen Speichers 10 über einen Motor 16a verschiebbar. Die Verschiebung des Armes 28 und damit der Führung 32 wird so gesteuert, daß die Ablage des vorgeformten Stranges 12 senkrecht von oben nach unten in den Speicher 10 erfolgen kann. Über eine Datenleitung 24a erhält die Steuerung 18 Informationen über die momentane Position der Führung 32 bzw. des Armes 28. Die Steuereinrichtung 18 ist in der Lage, aus den Daten über die Dicke des Stranges 12 und die Drehgeschwindigkeit sowie die Abmessungen des Speichers 10 den zur Zeit theoretisch gültigen Ablageradius im Speicher 10 zu errechnen.The embodiment shown in FIG. 2 contains all the essential features of the embodiment according to FIG. 1. In addition, an arm 28 is provided here, which is connected to a Guide 32 is equipped. The arm 28 is displaceable in the radial direction of the rotationally symmetrical accumulator 10 via a motor 16a. The displacement of the arm 28 and thus the guide 32 is controlled so that the preformed strand 12 can be deposited vertically from top to bottom in the memory 10. The controller 18 receives information about the current position of the guide 32 or the arm 28 via a data line 24a. The control device 18 is able to use the data about the thickness of the strand 12 and the rotational speed as well as the dimensions of the memory 10 Time to calculate theoretically valid storage radius in memory 10.

Es ist hier besonders wichtig, daß der im Speicher 10 abgelegte vorgeformte Strang 12a einerseits möglichst dichte Lagen bildet, andererseits aber keine Überschneidungen zwischen benachbarten Strangwindungen vorkommen. Dies ist notwendig, um die Speicherkapazität des Speichers 10 möglichst vollständig auszunutzen und um Verwicklungen der Spiralwindungen bzw. der Lagen durch zu große Abstände zwischen den Spiralwindungen bzw. Lagen zu vermeiden. Hier können fehlerhafte Beladeergebnisse zu einer Beschädigung oder sogar zum Abriß des vorgeformten Stranges bei der späteren Entladung des Speichers 10 führen.It is particularly important here that the preformed strand 12a stored in the memory 10 on the one hand forms layers that are as dense as possible, but on the other hand there are no overlaps between adjacent strand turns. This is necessary in order to utilize the storage capacity of the memory 10 as completely as possible and to avoid entanglement of the spiral windings or the layers due to the large distances between the spiral windings or layers. Incorrect loading results can damage or even tear off the preformed strand when the storage device 10 is subsequently unloaded.

Die aus der Berechnung durch die Steuereinrichtung 18 resultierenden Steuerimpulse werden über eine Datenleitung 26a an den Motor 16a übermittelt, der die momentan erforderliche Lage des Armes 28 bzw. der Führung 32 einstellt.The control pulses resulting from the calculation by the control device 18 are transmitted via a data line 26a to the motor 16a, which sets the currently required position of the arm 28 or the guide 32.

Die Ausführungsform nach Fig. 3 zeigt alle wesentlichen Merkmale der Ausführungsformen nach Fig. 2 bzw. nach Fig. 1. Zusätzlich ist bei dieser Ausführungsform die Möglichkeit vorhanden, die Führung 32 in ihrer Höhe zu verändern. Diese Veränderung ist abhängig von der momentanen Füllhöhe des vorgeformten Stranges 12a im Speicher 10. Sensoren 42 zur Bestimmung des momentanen Füllstands des Speichers 10 sind an der Außenwandung 46 des Speichers 10 vorgesehen.The embodiment according to FIG. 3 shows all the essential features of the embodiments according to FIG. 2 or according to FIG. 1. In addition, this embodiment offers the possibility of changing the height of the guide 32. This change depends on the instantaneous fill level of the preformed strand 12a in the memory 10. Sensors 42 for determining the instantaneous fill level of the memory 10 are provided on the outer wall 46 of the memory 10.

Hierbei kann es sich um Kontaktfühler, Feldsensoren, Lichtschranken u.dgl. handeln. Die Sensoren geben ihre Meßsignale über Datenleitungen 24c an eine Steuereinrichtung 18a (diese Funktion könnte auch die Steuereinrichtung 18 mit erfüllen) weiter. Die Steuereinrichtung 18a gibt Steuerimpulse an einen Motor 16b, der die Führung 32 über eine Halteeinrichtung 30, die am Arm 28 installiert ist, auf- bzw. abbewegt. Durch diese Ausgestaltung ist es möglich, den vorgeformten Strang 12 im Speicher 10 noch genauer zu plazieren. Es wäre auch denkbar, zwischen dem Teil 14 der Beladevorrichtung und der Führung 32 noch weitere Führungen oder gar ein längeres Führungsrohr vorzusehen.This can be contact sensors, field sensors, light barriers and the like. act. The sensors pass on their measurement signals via data lines 24c to a control device 18a (this function could also be performed by the control device 18). The control device 18a gives control pulses to a motor 16b, which moves the guide 32 up and down via a holding device 30 which is installed on the arm 28. This configuration makes it possible to place the preformed strand 12 in the store 10 even more precisely. It would also be conceivable to provide further guides or even a longer guide tube between the part 14 of the loading device and the guide 32.

Generell läßt sich sagen, daß der Speicher 10, nachdem er vollständig gefüllt ist, gegen einen leeren Speicher 10 ausgetauscht werden kann. Die Speicher 10 können dann je nach Bedarf gelagert werden oder aber auch gleich an eine zweite Strangmaschine 40 bzw. eine damit verbundene Entladevorrrichtung weitergegeben werden.In general, it can be said that the memory 10 can be exchanged for an empty memory 10 after it is completely filled. The stores 10 can then be stored as required or can also be passed on to a second strand machine 40 or an associated unloading device.

Der in Fig. 4 dargestellte Teil einer Vorrichtung zur Herstellung koaxialer Tabak- oder Filterstränge enthält eine zweite Strangmaschine 40, in der der vorgeformte Strang 12 mit Filter- oder rauchbarem Material und einer weiteren Umhüllung versehen wird. Der vorgeformte Strang 12 wird hierzu zunächst aus dem Speicher 10 entnommen. Die Drehgeschwindigkeit kann hierbei konstant oder variabel sein.The part of an apparatus for producing coaxial tobacco or filter strands shown in FIG. 4 contains a second strand machine 40, in which the preformed strand 12 is provided with filter or smokable material and a further covering. For this purpose, the preformed strand 12 is first removed from the memory 10. The speed of rotation can be constant or variable.

Die Führung 32' der Entladevorrichtung ist so beschaffen, daß sich Eigenschwingungen des vorgeformten Stranges 12 reduzieren lassen. Dies ist notwendig, da der Strang 12 die Drehbewegung des Speichers 10 innehat. Diese, von oben gesehen, spiralförmige Eigenschwingung des Stranges 12 wird von einer entsprechend geformten Führung 32' "abgestreift" und damit nahezu eliminiert. Zu diesem Zweck ist die Führung 32' mit einem sich in Transportrichtung kontinierlich verjüngenden Durchgang versehen und auf der vertikalen zentralen Achse des Speichers 10 angeordnet. Der Durchgang kann sich, nachdem er einen gewissen Verjüngungsgrad erreicht hat, wieder erweitern. Das innere Profil des Führungsteils 32' kann auch eine hyperbolische Form o.dgl. haben.The guide 32 'of the unloading device is designed such that natural vibrations of the preformed strand 12 can be reduced. This is necessary because the strand 12 has the rotational movement of the memory 10. This, seen from above, the spiral natural vibration of the strand 12 is "stripped" by a correspondingly shaped guide 32 'and thus almost eliminated. For this purpose, the guide 32 ′ is provided with a passage which tapers continuously in the transport direction and is arranged on the vertical central axis of the store 10. The passage can widen again after it has reached a certain degree of rejuvenation. The inner profile of the guide part 32 'can also have a hyperbolic shape or the like. to have.

Soll ein vorgeformter Strang in der Strangmaschine 40 weiter verarbeitet werden, so wird der Speicher 10 an den Motor 16 angekoppelt, und das Ende des vorgeformten Stranges 12 wird in die Entladevorrichtung bzw. in die Strangmaschine 40 eingefädelt. Dabei verläuft der Einfädelweg durch die Führung 32', über die Transportrollen 14a, 22 und schließlich in die zweite Strangmaschine 40 hinein. Die zweite Strangmaschine 40 regelt die Drehgeschwindigkeit des Speichers 10 im wesentlichen über ihre Verarbeitungsgeschwindigkeit mittels der Steuervorrichtung 18 und des Motors 16. Ist der vorgeformte Strang 12 in seiner gesamten Länge aus dem Speicher 10 entnommen, so wird der Speicher 10 vom Motor 16 abgekoppelt, und es wird ein anderer, gefüllter Speicher 10 an den Motor 16 zur Weiterverarbeitung des darin gespeicherten vorgeformten Stranges 12 an die Entladevorrichtung 32', 14a, 22 angeschlossen, um in der Strangmaschine 40 weiter verarbeitet zu werden.If a preformed strand is to be processed further in the strand machine 40, the memory 10 is coupled to the motor 16 and the end of the preformed strand 12 is threaded into the unloading device or into the strand machine 40. The threading path runs through the guide 32 ', over the transport rollers 14a, 22 and finally into the second strand machine 40. The second strand machine 40 regulates the rotational speed of the memory 10 essentially via its processing speed by means of the control device 18 and the motor 16. If the entire length of the preformed strand 12 is removed from the memory 10, the memory 10 is decoupled from the motor 16 and another filled reservoir 10 is connected to the motor 16 for further processing of the preformed strand 12 stored therein to the unloading device 32 ', 14a, 22 in order to be further processed in the strand machine 40.

Die in der Fig. 5 dargestellte Ausführungsform entspricht im wesentlichen der Ausführungsform nach Fig. 4 und ist mit einer Meßeinrichtung zur Erfassung der auf den vorgeformten Strang 12 einwirkenden Zugkraft ausgestattet. Die Meßeinrichtung weist eine bewegliche Laufrolle 34a auf, die gegen ein federndes sensorisch wirkendes Teil 34b drückt. Dieses Teil 34b kann die Druckkraft registrieren, mit der der vorgeformte Strang 12 auf die Laufrolle 34a einwirkt. Da diese Druckkraft des Stranges 12 proportional der Zugkraft ist, die auf den vorgeformten Strang 12 einwirkt läßt sich die Zugkraft erfassen. Sobald nämlich die Zugkraft auf den Strang 12 einen Grenzwert übersteigt, der von Stabilitätsdaten des vorgeformten Stranges 12 abhängig ist, gibt die Steuereinrichtung 18 Steuerimpulse an den Antriebsmotor 16, woraufhin der Speicher 10 mit höherer Geschwindigkeit gedreht und damit der vorgeformte Strang 12 entlastet wird.The embodiment shown in FIG. 5 corresponds essentially to the embodiment according to FIG. 4 and is equipped with a measuring device for detecting the tensile force acting on the preformed strand 12. The measuring device has a movable roller 34a which bears against a resilient sensor element 34b presses. This part 34b can register the compressive force with which the preformed strand 12 acts on the roller 34a. Since this compressive force of the strand 12 is proportional to the tensile force that acts on the preformed strand 12, the tensile force can be detected. As soon as the tensile force on the strand 12 exceeds a limit value which is dependent on the stability data of the preformed strand 12, the control device 18 sends control pulses to the drive motor 16, whereupon the memory 10 is rotated at a higher speed and thus the preformed strand 12 is relieved.

Außerdem ist es möglich, das Meßteil 34b durch ein Auslenkteil zu ergänzen, das je nach der vertretbaren Zugkraft die Rolle 34a entweder in senkrechter Richtung zur Förderrichtung des Stranges 12 auslenkt, oder aber, falls die Zugkraft zu gering wird, wodurch der Strang 12 durchhängen könnte, die Zugkraft durch eine stärkere Auslenkung der Rolle 34a vergrößert.In addition, it is possible to supplement the measuring part 34b with a deflecting part which, depending on the acceptable tensile force, deflects the roller 34a either in a direction perpendicular to the direction of conveyance of the strand 12, or if the tensile force becomes too small, which could cause the strand 12 to sag , the tensile force is increased by a greater deflection of the roller 34a.

Die hierfür notwendigen Steuerdaten werden von der Steuerung 18 bestimmt.The control data necessary for this are determined by the controller 18.

Die in Fig. 6 dargestellte Ausführungsform weist im wesentlichen die gleichen Merkmale auf wie die in den Fig. 4 und 5 dargestellten Ausführungsformen. Zusätzlich enthält die Ausführungsform nach der Fig. 6 jedoch die Möglichkeit, die Führung 32' in der Höhe zu verfahren, um sicherzustellen, daß die Führungseigenschaften und damit die auf den vorgeformten Strang 12 wirkenden Belastungen unabhängig von der Füllhöhe des Speichers 10 unverändert bleiben. Zur Bestimmung der Füllhöhe sind Sensoren 42 in verschiedenen Höhen am Speicher 10 befestigt. Als Alternative können am Speicher 10 auch Löcher vorhanden sein, durch die die Sensoren 42 die Füllhöhe im Speicher detektieren. Zu diesem Zweck können gegenüber den besagten Löchern an der gegenüberliegenden Wandung des Speichers 10 spiegelnde Flächen vorhanden sein, die den Meßstrahl der Sensoren 42 reflektieren. Erhalten die Sensoren 42 ein Reflexionssignal, gegebenenfalls von einer zusätzlichen Lichtquelle, so geben sie ein entsprechendes Signal an die Steuerung 18a ab, die somit weiß, daß in der Höhe des bzw. der entsprechenden Sensoren 42 keine spiralförmigen Lagen des Stranges 12 mehr vorhanden sind. Bei dieser Ausgestaltung können die Sensoren 42 an einer fest, z.B. am Gehäuse des Motors 16, installierten Leiste montiert sein, was den Vorteil hat, daß nicht jeder einzelne Speicher 10 mit Sensoren versehen werden muß und es damit auch keine Probleme mit der Handhabung von Steuerleitungen, z.B. über Schleifkontakte, gibt. Diese Funktion ließe sich auch mit einem einzelnen entlang der Leiste verfahrbaren Sensor erfüllen.The embodiment shown in FIG. 6 has essentially the same features as the embodiments shown in FIGS. 4 and 5. In addition, the embodiment according to FIG. 6, however, contains the possibility of moving the guide 32 ′ in height in order to ensure that the guide properties and thus the loads acting on the preformed strand 12 remain unchanged regardless of the fill level of the store 10. To determine the fill level, sensors 42 are attached to the accumulator 10 at different heights. As an alternative, there may also be holes in the store 10, through which the sensors 42 detect the fill level in the memory. For this purpose, there may be reflecting surfaces on the opposite wall of the memory 10 relative to the said holes, which reflect the measuring beam from the sensors 42. If the sensors 42 receive a reflection signal, possibly from an additional light source, they emit a corresponding signal to the controller 18a, which thus knows that the spiral of the strand 12 is no longer present at the height of the corresponding sensor or sensors 42. In this embodiment, the sensors 42 can be mounted on a fixed bar, for example on the housing of the motor 16, which has the advantage that not every individual memory 10 has to be provided with sensors and there are therefore no problems with the handling of control lines , for example via sliding contacts. This function could also be performed with a single sensor that can be moved along the bar.

Wie bereits gesagt, geben die Sensoren 42 aktuelle Meßwerte über den momentanen Füllstand des Speichers 10 über die Steuerleitung 24c an die Steuereinrichtung 18a weiter. In der Steuereinrichtung 18a werden Steuerdaten erzeugt, die einen Motor 16b dazu veranlassen, die Führung 32' über eine Halterung 30a, mit der die Führung 32' am Motor 16b gehalten ist, in ihrer Höhe zu verfahren.As already mentioned, the sensors 42 forward current measured values on the current fill level of the memory 10 to the control device 18a via the control line 24c. Control data are generated in the control device 18a, which cause a motor 16b to move the height of the guide 32 'via a holder 30a with which the guide 32' is held on the motor 16b.

Der aus Fig. 7 ersichtliche koaxiale Tabak- oder Filterstrang, der nach dem erfindungsgemäßen Verfahren bzw. mit der erfindungsgemäßen Vorrichtung hergestellt ist, ist allgemein durch das Bezugszeichen 100 gekennzeichnet. Dieser Tabak- oder Filterstrang 100 besteht aus einem inneren, in der ersten Strangmaschine 20 hergestellten Strang 110 aus einem Füllmaterial. Dieses Füllmaterial ist von einer ersten Umhüllung 112, z.B. einem Papier, umgeben. Der innere Strang 110 ist von Filter- oder rauchbarem Material 104 umgeben. Schließlich ist eine äußere Umhüllung, z.B. Papier, vorhanden. Der innere Strang 110 ist koaxial im äußeren Strang angeordnet.The coaxial tobacco or filter strand which can be seen from FIG. 7 and which is produced by the method according to the invention or with the device according to the invention is generally identified by reference number 100. This tobacco or filter strand 100 consists of an inner strand 110 produced in the first strand machine 20 from a filler material. This filler is surrounded by a first wrapper 112, for example a paper. The inner strand 110 is surrounded by filterable or smokable material 104. Finally, there is an outer wrapping, for example paper. The inner strand 110 is arranged coaxially in the outer strand.

Abschließend sei angemerkt, daß sich der Wirkungsgrad bei einer Ausführungsform nach der vorliegenden Erfindung in bemerkenswerter Weise steigern läßt. So errechnet sich der Wirkungsgrad bei der bekannten direkten Kopplung der ersten Strangmaschine 20 mit der zweiten Strangmaschine 40 mit 60%, wenn jede der beiden Strangmaschinen 20, 40 mit einem Wirkungsgrad von 80% arbeitet.Finally, it should be noted that the efficiency can be remarkably increased in an embodiment according to the present invention. The efficiency in the known direct coupling of the first strand machine 20 to the second strand machine 40 is calculated at 60% if each of the two strand machines 20, 40 works with an efficiency of 80%.

Dagegen führt die erfindungsgemäße indirekte Kopplung der ersten Strangmaschine 20 mit der zweiten Strangmaschine 40 über Speicher 10 und Be- bzw. Entladevorrichtungen zu einem Gesamtwirkungsgrad von 75%, obwohl bei dem hier angegebenen Beispiel der jeweilige Wirkungsgrad der bei der Strangmaschine nur 75% ausmacht.In contrast, the indirect coupling according to the invention of the first strand machine 20 to the second strand machine 40 via storage 10 and loading and unloading devices leads to an overall efficiency of 75%, although in the example given here the respective efficiency is only 75% in the strand machine.

Bei einer Versuchsanordnung hat der Speicher 10 einen Aussendurchmesser von 1,25 m, einen Innendurchmesser von 0,4 m und eine Höhe von 1,0 m gehabt. Hierbei ließ sich bei einem Füllgrad (Volumenausnutzung) von ca. 55% eine Stranglänge von 11.000 m im Speicher 10 unterbringen. Dieser Füllgrad ermöglichte bei einer Stranggeschwindigkeit von 5 m/s (entsprechend 300 m/min) eine Herstellungszeit in der Strangmaschine 40 von ca. 48 Minuten.In an experimental arrangement, the reservoir 10 had an outer diameter of 1.25 m, an inner diameter of 0.4 m and a height of 1.0 m. With a degree of filling (volume utilization) of approx. 55%, a string length of 11,000 m could be accommodated in the store 10. This degree of filling enabled a production time in the strand machine 40 of approximately 48 minutes at a strand speed of 5 m / s (corresponding to 300 m / min).

Für längere Herstellungszeiten sind selbstverständlich größere Volumina für die Speicher 10 erforderlich. Dabei erhöht sich jedoch gleichzeitig der Gewichtsdruck, den die unteren Lagen der vorgeformten Stränge 12 auszuhalten haben. Dem ließe sich entgegenwirken, indem Speicher 10 verwendet werden, die z.B. die Form eines auf der Spitze stehenden, in einer gewissen Höhe abgeschnittenen Kegels haben. Hierdurch ließe sich der Druck auf die unteren, spiralförmigen Lagen des Stranges 12a wesentlich vermindern. Gleichzeitig würde damit das Volumen des Speichers erhöht und die mögliche maximale Weiterverarbeitungszeit in der Strangmaschine 40 verlängert werden. Alternativ ist es auch möglich den Zwischenspeicher in Form einer Spule auszugestalten und den vorgefertigten Strang darauf aufzuwickeln und anschließend wieder abzuwickeln.Larger volumes are of course required for the memories 10 for longer production times. Here however, at the same time the weight pressure which the lower layers of the preformed strands 12 have to endure increases. This could be counteracted by using memories 10 which, for example, have the shape of a cone standing on top, cut off at a certain height. This would significantly reduce the pressure on the lower, spiral layers of the strand 12a. At the same time, this would increase the volume of the memory and extend the possible maximum further processing time in the strand machine 40. Alternatively, it is also possible to design the intermediate store in the form of a coil and to wind the prefabricated strand on it and then to unwind it again.

Claims (25)

  1. A method for producing coaxial tobacco or filter rods in which a first production machine (20) forms a preformed rod (12) from a strip-like first wrapping material and a stream of filling material and a second production machine (40) forms from the preformed rod (12), a strip-like second wrapping material and a stream of filling material the coaxial tobacco or filter rod,
       characterized in that
    the preformed rod (12) coming from the first production machine (20) is intermediately stored in a magazine (10) by depositing in radial direction outwardly or inwardly the preformed rod (12) substantially in layers spirally from the inside of the magazine (10) or the outside of the magazine (10), and that the preformed rod (12) is subsequently again removed from the magazine (10) and supplied to the second production machine (40).
  2. A method according to claim 1, characterized in that the preformed rod (12) is deposited in the rotating magazine (10).
  3. A method according to claim 1 or 2, characterized in that the preformed rod (12) is raised by a conveying means (14, 22), in particular deflection rollers and/or transport rollers, before it is conveyed to the magazine (10).
  4. A method according to one of claims 1 to 3, characterized in that the rotational speed of the magazine (10) is controlled so that the preformed rod (12) entering the magazine (10) at constant production or conveying speed from the first production machine (20) is laid-out uniformly in the magazine (10) independent of the radius on which the preformed rod (12) is instantaneously deposited in the magazine (10) and dependent on the diameter of the preformed rod (12).
  5. A method according to one of claims 1 to 4, characterized in that the preformed rod (12) is guided in such a manner that its depositing point in the magazine (10) corresponds to a theoretically calculated, instantaneously valid point of a spiral in the magazine (10).
  6. A method according to one of claims 1 to 5, characterized in that the preformed rod (12) is guided in the magazine (10) in adaptation to the instantaneous filling height.
  7. A method according to one of claims 1 to 6, characterized in that the respective uppermost layer of the laid-out preformed rod (12) is held at a predetermined height in that the bottom of the magazine (10) is moved vertically.
  8. A method according to one of claims 1 to 7, characterized in that the preformed rod is taken out of the magazine (10) by a discharge means (32).
  9. A method according to claim 8, characterized in that the magazine (10) is rotated at a substantially constant rotational speed during the discharge operation.
  10. A method according to one of claims 1 to 9, characterized in that the natural oscillations of the preformed rod (12) withdrawn from the magazine (10) during the discharge operation are substantially eliminated in that the rod (12) is removed by a guide (32', 14a) provided above the magazine.
  11. A method according to one of claims 1 to 8 or 10, characterized in that the rotational speed of the magazine (10) is additionally controlled during a discharge operation via the tensile force exerted on the preformed rod (12).
  12. A method according to claim 11, characterized in that the distance between the guide (32') and the removal point is guided within predetermined limit values.
  13. An apparatus for the production of coaxial tobacco or filter rods, in particular for performing the method according to claim 1, comprising a first production machine (20) for producing a preformed rod (12) from a strip-like first wrapping material and a stream of filling material and a second production machine (40) for combining and processing the preformed rod (12) with a strip-like second wrapping material and stream of filling material into the coaxial tobacco or filter rod,
       characterized in that
    between the first production machine (20) and the second production machine (40) a preferably rotation-symmetrical magazine (10) for the preformed rod (12) is disposed, and that there is provided a means for depositing the preformed rod (12) substantially in layers spirally outwardly or inwardly in the magazine (10) as well as a discharge means.
  14. An apparatus according to claim 13, characterized in that the magazine (10) is mounted rotably about its longitudinal axis and is rotatable via a drive shaft which engages on the longitudinal axis, a drive motor (16) engaging the drive shaft.
  15. An apparatus according to claim 13 or 14, characterized in that between the first production machine (20) and the magazine (10) a deflection or conveying means is disposed comprising deflection rollers and/or transport rollers as well as a drive means.
  16. An apparatus according to one of claims 13 to 15, characterized in that a control means (18) is provided which controls the deposit of the preformed rod (12) in the magazine (10) in dependence on the diameter of the rod (12) in such a manner that the rod production rate is independent of the instantaneous depositing point in the magazine (10), for which purpose the magazine (10) has to be turned faster when the deposit is nearer to the center of the magazine and slower in the outer region of the magazine (10).
  17. An apparatus according to one of claims 13 to 16, characterized in that the magazine (10) is provided with a rotation-symmetrical, removable body (45) which is arranged on the longitudinal axis of the magazine (10).
  18. An apparatus according to one of claims 13 to 17, characterized in that the depositing means is provided with means (16a, 28, 32) enabling it to deposit the preformed rod (12) in layers on a spiral path predetermined by the control means (18).
  19. An apparatus according to one of claims 13 to 18, characterized in that the depositing means (28, 39, 32) is mounted movably corresponding to the instantaneous filling height in the magazine (10).
  20. An apparatus according to one of claims 13 to 19, characterized in that the bottom (48) of the magazine (10) is movable in its height.
  21. An apparatus according to one of claims 13 to 20, characterized in that on the discharge means a guide (32') is provided which takes up the natural oscillations of the preformed rod (12).
  22. An apparatus according to one of claims 13 to 21, characterized in that on the discharge means means (34) are provided with which the tensile force exerted on the preformed rod is measured.
  23. An apparatus according to one of claims 13 to 22, characterized in that the magazine (10) is provided with a clutch.
  24. An apparatus according to one of claims 13 to 23, characterized in that driveable rotation means, for example rotary tables, are provided onto which the magazine (10) can be placed for charging or discharging.
  25. An apparatus according to claim 24, characterized in that the rotation means is provided with counterpieces to the clutch on the magzine (10).
EP91102958A 1990-03-26 1991-02-27 Method and device for the manufacture of a coaxial tobacco or filter rod Expired - Lifetime EP0448977B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4009657 1990-03-26
DE4009657A DE4009657C2 (en) 1990-03-26 1990-03-26 Method and device for producing coaxial tobacco or filter strands

Publications (3)

Publication Number Publication Date
EP0448977A2 EP0448977A2 (en) 1991-10-02
EP0448977A3 EP0448977A3 (en) 1993-01-13
EP0448977B1 true EP0448977B1 (en) 1996-01-17

Family

ID=6403073

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Application Number Title Priority Date Filing Date
EP91102958A Expired - Lifetime EP0448977B1 (en) 1990-03-26 1991-02-27 Method and device for the manufacture of a coaxial tobacco or filter rod

Country Status (8)

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US (1) US5201328A (en)
EP (1) EP0448977B1 (en)
JP (1) JP3248921B2 (en)
AT (1) ATE133039T1 (en)
DE (2) DE4009657C2 (en)
DK (1) DK0448977T3 (en)
ES (1) ES2084050T3 (en)
GR (1) GR3018950T3 (en)

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CN105555154A (en) * 2013-09-27 2016-05-04 塔恩纸业有限公司 Coating method

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DE102008016827A1 (en) * 2008-04-01 2009-10-08 Hauni Maschinenbau Ag Device for transporting a filter tow
DE102010043348A1 (en) * 2010-11-03 2012-05-03 Hauni Maschinenbau Ag Device for producing coaxial filters for rod-shaped smoking articles
DE102010043350A1 (en) * 2010-11-03 2012-05-03 Hauni Maschinenbau Ag Apparatus for the production of coaxial filters for rod-shaped smoking articles
DE102010043343A1 (en) * 2010-11-03 2012-05-03 Hauni Maschinenbau Ag Apparatus for the production of coaxial filters for rod-shaped smoking articles

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US3162199A (en) * 1961-04-21 1964-12-22 Brown & Williamson Tobacco Smoking articles having encapsulated tobacco additives and their manufacture
US3445077A (en) * 1967-08-03 1969-05-20 Nassau Smelting & Refining Co Strand distributing and receiving apparatus and method
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GB2070409A (en) * 1980-01-18 1981-09-09 British American Tobacco Co Filament, comprising smoke- modifying agent, in smoking article
GB2069310B (en) * 1980-02-20 1983-09-14 Molins Ltd Manufacture of cigarettes
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105555154A (en) * 2013-09-27 2016-05-04 塔恩纸业有限公司 Coating method

Also Published As

Publication number Publication date
DE4009657C2 (en) 1994-04-07
DE4009657A1 (en) 1991-10-02
EP0448977A3 (en) 1993-01-13
GR3018950T3 (en) 1996-05-31
ES2084050T3 (en) 1996-05-01
JPH04211353A (en) 1992-08-03
US5201328A (en) 1993-04-13
EP0448977A2 (en) 1991-10-02
DE59107263D1 (en) 1996-02-29
DK0448977T3 (en) 1996-05-28
JP3248921B2 (en) 2002-01-21
ATE133039T1 (en) 1996-02-15

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