EP3318138A1 - Device and method for conveying a band of material for the tobacco processing industry - Google Patents

Device and method for conveying a band of material for the tobacco processing industry Download PDF

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Publication number
EP3318138A1
EP3318138A1 EP17198557.5A EP17198557A EP3318138A1 EP 3318138 A1 EP3318138 A1 EP 3318138A1 EP 17198557 A EP17198557 A EP 17198557A EP 3318138 A1 EP3318138 A1 EP 3318138A1
Authority
EP
European Patent Office
Prior art keywords
adjusting device
material web
roller
length
adjusting
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.)
Withdrawn
Application number
EP17198557.5A
Other languages
German (de)
French (fr)
Inventor
Alexander Gansewig
Frank Grothaus
Peter Kalus
Clemens Schmick
Bernd Timmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP3318138A1 publication Critical patent/EP3318138A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • A24C5/472—Applying adhesives to the connecting band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers

Definitions

  • the present invention relates to a device for conveying a material web of the tobacco-processing industry, comprising a roller and an adjusting device acting on the material web, wherein the looping length of the material web on the roller can be changed by adjusting the adjusting device.
  • the invention further relates to a corresponding method.
  • the wrap of the glue roller denotes the length of the distance over which the paper to be glued has contact with the roller. For example, the longer the wrap around a glue applicator roll, the more glue is applied to the paper. In the prior art, this can be set, for example, via a fixed setting of an end stop. If you want to transfer more or less glue, the machine must be stopped and the stop mechanically adjusted.
  • WO 99/06153 A1 discloses a gluing device for gluing a tipping paper strip, wherein in the region of an application zone a pressing means in the form of a counterpressure roller or a pressure element presses the tipping paper strip against the peripheral surface of the rotating glue roller.
  • the pressure means is arranged on a pivotally mounted on the housing pivot arm. An active adjustment of the pressure means is just as impossible as a change in the wrap length of the material web on the glue application roller.
  • EP 1 323 357 B1 discloses a gluing device for gluing a tipping paper strip with a puller for Peeling off the tipping paper strip from a reel and a cutting device for cutting the glued tipping paper strip into tipping paper leaflets.
  • a synchronous drive separate from the main drive is provided, which synchronously drives the removal device and the cutting device with an associated gear unit.
  • the synchronous drive is decoupled from the main drive. This ensures that cut even with a shutdown of the machine equal tipping paper leaflets.
  • this solution is complicated and complicated due to the required gear unit and the decoupling of the drives when shutting down.
  • WO 2006/093126 A1 discloses a gluing apparatus for a filter attachment machine having a guide member having two guide rollers for the pad paper strip.
  • the guide element is fastened to a holder which can be pivoted by means of a pneumatic cylinder between an operating position in which the tipping paper wraps around the glue application roller over a defined length and a rest position in which the tipping paper rests tangentially on the glue application roller.
  • the object of the invention is to provide a device which allows simple means an exact and reproducible adjustment of the adjustment and thus a change in the loop length of the web on the roller during operation of the machine.
  • the adjusting device is adjustable by means of a servo drive. Made possible by means of this measure
  • the invention provides a precise and stepless adjustment of the adjusting device and thus a corresponding change in the looping length of the material web on the roller during operation.
  • an adjustable length compensation device is provided to compensate for the change in length of the material web caused by the adjustment of the adjustment device.
  • the length compensation device is also adjusted by means of a servo drive. A gear unit between adjusting and length compensation device is then not required.
  • the length compensation is effected by speed change of a driven drum for the material web.
  • the adjusting device comprises an articulated arm, which is further advantageous eccentrically articulated to a rotating drive element of the adjusting device.
  • This will be two Dead points created in which a manual adjustment of the adjustment of the material web side is not possible.
  • the adjusting device has a maximum distance to the roller. This has the advantage that when the machine is switched off, in which the adjusting device has a maximum distance from the roller, an inadvertent or unintentional adjustment of the adjusting device from the outside, ie from the material web side, is not possible.
  • Servo drive referred to in this application, as usual, a unit of servo motor and servocontroller.
  • a servomotor electric motors are called, which allow the control of the angular position of their motor shaft and the rotational speed and acceleration.
  • a servomotor consists of an electric motor, which is additionally equipped with a sensor for position determination. The determined by the sensor rotational position of the motor shaft is transmitted continuously to a usually outside of the actual motor mounted control electronics, the so-called servo drive, the movement of the motor according to one or more adjustable setpoints - such as target angular position of the shaft or setpoint speed - in a control loop regulates.
  • the invention is advantageously applicable to a gluing device in a filter attachment machine, but not limited thereto.
  • the invention in the tobacco processing industry is everywhere applicable where the change of the wrap of a roll or drum with a material web with simple means should be adjustable precisely and reproducibly continuously during production. Also, applications without application of a substance to the material web are conceivable if a modification of the loop according to the invention is advantageous for other reasons.
  • FIG. 1 1 shows an infeed drum 1, the tobacco rods produced on a rod machine, not shown, on stubble drums 2, which graduate the staggered tobacco rods and deliver in rows of two pieces with a gap between the cigarettes to a compilation drum 3.
  • Filter rods pass from a magazine 4 to a cutting drum 6, where they are cut into filter stoppers of double use length, staggered on a staggering drum 7, aligned by a sliding drum 8 to a series of consecutive plugs and stored by an accelerator drum 9 in the interstices of the cigarette rows on the compilation drum 3 ,
  • the tobacco rod filter tobacco rod groups are pushed together and taken over by a transfer drum 11.
  • a tipping paper strip 12 drawn off from a reel 13 by means of a take-off roller pair 15 is subsequently glued by a gluing device 14 and then cut in a cutting device 16 on a cutting drum 17 by the knives 43 of a knife drum 18 in tipping paper flakes.
  • the severed Tipping paper leaflets are adhered to the tobacco rod filter tobacco rod groups on the transfer drum 11 and rolled on a roller drum 19 around the cigarette filter groups.
  • the finished double-filter cigarettes are fed via a drying drum 21 to a cutting drum 22 and assembled thereon by means of central cutting through the filter plugs through to single-filter cigarettes.
  • a description of the further product run through the filter attachment machine 10 can be omitted here, since this is irrelevant to the invention.
  • the gluing device 14 consists of a removal roller 24 dipping into a glue reservoir 23 and a glue application roller 25 which applies a glue layer to the tipping paper strip 12.
  • a Einwalzenbeleimung is possible.
  • About a deflection of the tipping paper strip 12 is guided to the cutting drum 17, which he wraps around the cutterhead 18 in a predetermined angle section.
  • the knife drum 18 carries at its periphery transverse to the direction of rotation knife 43 for cutting the tipping paper strip 12 into individual tipping paper leaflets.
  • FIG. 2 A part of the gluing device 14 is in FIG. 2 shown in more detail.
  • a contact device 26 is provided, which is embodied here as a pivot arm 27 which is pivotably articulated about the pivot bearing 31 and has an end-side, freely rotatable deflection roller 28 for the tipping paper 12.
  • the adjusting device 29 is provided, which advantageously here as an articulated arm 33 with an end, freely rotatable deflection roller 34 is executed for the tipping paper 12.
  • the articulated arm 33 advantageously comprises a pivot arm 30, which is articulated pivotably about a machine-fixed pivot bearing 32.
  • the pivot arm 30 is connected via a free pivot joint 36 with a coupling rod 35 which is pivotally hinged at the other end eccentrically on an eccentric disc 37.
  • the eccentric disc 37 is rotatably driven by means of a servo drive 38 shown only schematically, which is controlled by an electronic control device 42, such as the machine control.
  • the pivot arm 30 can as in FIG. 2 however, it is not absolutely necessary to have two legs 30A, 30B fixedly connected at an angle.
  • the adjustment 29 is adjustable between two extreme positions, namely the in FIG. 2 dashed line position in which the reference numerals of various elements (tipping paper 12 ', pivot arm 30', pulley 34 ', coupling rod 35', pivot joint 36 ') are provided with apostrophe, and an opposite position.
  • the position shown in dashed lines is the one in which the guide roller 34 has a maximum distance to the glue roller 25; the paper run of the pad paper is here marked with 12 '. This corresponds to the rest position of the adjusting device 29, which is taken automatically by appropriate control of the servo motor 38, in particular when the machine is switched off.
  • the opposite position is that in which the diverting pulley 34 is at a minimum distance from the glue roller 25. In the FIG. 2 shown operating position (solid tipping paper run 12) is usually between the two described maximum positions.
  • the mode of action of in FIG. 2 The device shown will be described below.
  • the tipping paper 12 is pivoted by the applying device 26 in the direction of the glue roller 25 and so the in FIG. 2 shown operational readiness of the application device 26 produced.
  • the servo drive 38 is driven to pivot the pivot arm 30 and thus the guide roller 34 and with her the tipping paper 12 to the glue roller 25 until the desired wrapping of the glue roller 25 is reached with the tipping paper 12. Then the glue transfer from the glue roller 25 to the tipping paper 12 and thus production can begin.
  • FIG. 2 It is clearly evident that the paper path of the tipping paper 12, 12 'in the device or in the machine changes due to the adjustment of the adjusting device 29. Furthermore, it is off FIG. 2 also seen that the guide roller 34 is non-contacting with respect to the glue roller 25 operates. In this way, the deflection roller 34 of the application differs from a contacting, the tipping paper 12 to the glue roller 25 and Wegenden counter pressure roller of the prior art.
  • the resulting due to the pivoting movement of the pivot arm 30 change in length of the lining paper 12 is by means of a in FIG. 2 only schematically illustrated length compensation device 40 balanced.
  • the length compensation device 40 may, for example, from one or the take-off rollers 15 from FIG. 1 be formed. It is driven by means of a servo drive 41 which is independently controllable by the electronic control device 42, for example, the machine control.
  • the speed control of the length compensation device 40 is carried out under the proviso of the described length compensation depending on the position of the adjusting device 29. A corresponding unambiguous relationship is stored in the electronic control device 42.
  • a prerequisite for the described length compensation by speed control of a drum 15 is that the adhesion of the lining paper 12 on the drum 15 is sufficiently high, so that a change in the rotational speed of the drum 15 is converted into a correspondingly changed conveying speed of the lining paper 12.
  • the length compensation device 40 is preferably arranged upstream of the adjusting device 29.
  • the length compensation device 40 can also be formed, for example, by another driven (traction) drum in the machine.
  • eccentric 37 instead of the eccentric 37 and a differently shaped eccentric element may be used, for example, a non-rotatably mounted on the shaft 44 of the servo drive 38 rod whose distal end is rotatably connected to the coupling rod 35.
  • a linear drive for the guide roller 34 may be provided.

Abstract

Eine Vorrichtung zum Fördern einer Materialbahn (12) der Tabak verarbeitenden Industrie umfasst eine Walze (25) und eine auf die Materialbahn (12) einwirkende Verstelleinrichtung (29), wobei durch Verstellen der Verstelleinrichtung (29) die Umschlingungslänge der Materialbahn (12) an der Walze (25) veränderbar ist. Die Verstelleinrichtung (29) ist mittels eines Servoantriebs (38) verstellbar. Vorteilhaft ist eine Längenausgleichseinrichtung (40) zum Ausgleich einer durch die Verstelleinrichtung (29) hervorgerufenen Längenänderung der Materialbahn (12) vorgesehen.A device for conveying a material web (12) of the tobacco-processing industry comprises a roller (25) and an adjusting device (29) acting on the material web (12), wherein the adjustment length of the material web (12) is adjusted by adjusting the adjusting device (29) Roller (25) is variable. The adjusting device (29) is adjustable by means of a servo drive (38). Advantageously, a length compensation device (40) is provided for compensating a change in length of the material web (12) caused by the adjusting device (29).

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Fördern einer Materialbahn der Tabak verarbeitenden Industrie, umfassend eine Walze und eine auf die Materialbahn einwirkende Verstelleinrichtung, wobei durch Verstellen der Verstelleinrichtung die Umschlingungslänge der Materialbahn an der Walze veränderbar ist. Die Erfindung betrifft des Weiteren ein entsprechendes Verfahren.The present invention relates to a device for conveying a material web of the tobacco-processing industry, comprising a roller and an adjusting device acting on the material web, wherein the looping length of the material web on the roller can be changed by adjusting the adjusting device. The invention further relates to a corresponding method.

Die Umschlingung der Leimwalze bezeichnet die Länge der Strecke, über die das zu beleimende Papier Kontakt mit der Walze hat. Je länger die Umschlingung beispielsweise bei einer Leimauftragswalze ist, desto mehr Leim wird auf das Papier aufgetragen. Im Stand der Technik kann dies beispielsweise über eine feste Einstellung eines Endanschlags eingestellt werden. Will man mehr oder weniger Leim übertragen, so muss die Maschine gestoppt und der Anschlag mechanisch verstellt werden.The wrap of the glue roller denotes the length of the distance over which the paper to be glued has contact with the roller. For example, the longer the wrap around a glue applicator roll, the more glue is applied to the paper. In the prior art, this can be set, for example, via a fixed setting of an end stop. If you want to transfer more or less glue, the machine must be stopped and the stop mechanically adjusted.

WO 99/06153 A1 offenbart eine Beleimungsvorrichtung zum Beleimen eines Belagpapierstreifens, wobei im Bereich einer Auftragszone ein Andruckmittel in Form einer Gegendruckwalze bzw. eines Andruckelements den Belagpapierstreifen gegen die Umfangsfläche der rotierenden Leimwalze drückt. Das Andruckmittel ist an einem am Gehäuse schwenkbar gelagerten Schwenkarm angeordnet. Eine aktive Verstellung des Andruckmittels ist ebenso wenig möglich wie eine Änderung der Umschlingungslänge der Materialbahn an der Leimauftragswalze. WO 99/06153 A1 discloses a gluing device for gluing a tipping paper strip, wherein in the region of an application zone a pressing means in the form of a counterpressure roller or a pressure element presses the tipping paper strip against the peripheral surface of the rotating glue roller. The pressure means is arranged on a pivotally mounted on the housing pivot arm. An active adjustment of the pressure means is just as impossible as a change in the wrap length of the material web on the glue application roller.

EP 1 323 357 B1 offenbart eine Beleimungsvorrichtung zum Beleimen eines Belagpapierstreifens mit einer Abziehvorrichtung zum Abziehen des Belagpapierstreifens von einer Bobine und einer Schneidvorrichtung zum Zerschneiden des beleimten Belagpapierstreifens in Belagpapierblättchen. Für die Abziehvorrichtung und die Schneidvorrichtung ist ein von dem Hauptantrieb separater Synchronantrieb vorgesehen, der mit einer dazugehörenden Getriebeeinheit die Abziehvorrichtung und die Schneidvorrichtung synchron antreibt. Beim Herunterfahren der Maschine wird der Synchronantrieb vom Hauptantrieb entkoppelt. Hierdurch wird erreicht, dass auch bei einem Abschalten der Maschine gleich lange Belagpapierblättchen geschnitten werden. Jedoch ist diese Lösung aufgrund der erforderlichen Getriebeeinheit und der Entkopplung der Antriebe beim Herunterfahren aufwändig und kompliziert. EP 1 323 357 B1 discloses a gluing device for gluing a tipping paper strip with a puller for Peeling off the tipping paper strip from a reel and a cutting device for cutting the glued tipping paper strip into tipping paper leaflets. For the removal device and the cutting device, a synchronous drive separate from the main drive is provided, which synchronously drives the removal device and the cutting device with an associated gear unit. When shutting down the machine, the synchronous drive is decoupled from the main drive. This ensures that cut even with a shutdown of the machine equal tipping paper leaflets. However, this solution is complicated and complicated due to the required gear unit and the decoupling of the drives when shutting down.

WO 2006/093126 A1 offenbart eine Beleimungsvorrichtung für eine Filteransetzmaschine mit einem Führungselement, das zwei Führungsrollen für den Belagpapierstreifen aufweist. Das Führungselement ist an einem Halter befestigt, der mittels eines Pneumatikzylinders zwischen einer Betriebsposition, in der das Belagpapier die Leimauftragswalze auf einer definierten Länge umschlingt, und einer Ruheposition, in der das Belagpapier tangential an der Leimauftragswalze anliegt, verschwenkbar ist. WO 2006/093126 A1 discloses a gluing apparatus for a filter attachment machine having a guide member having two guide rollers for the pad paper strip. The guide element is fastened to a holder which can be pivoted by means of a pneumatic cylinder between an operating position in which the tipping paper wraps around the glue application roller over a defined length and a rest position in which the tipping paper rests tangentially on the glue application roller.

Die Aufgabe der Erfindung besteht darin, eine Vorrichtung bereitzustellen, die mit einfachen Mitteln eine exakte und reproduzierbare Verstellung der Verstelleinrichtung und somit eine Änderung der Umschlingungslänge der Materialbahn an der Walze im laufenden Betrieb der Maschine ermöglicht.The object of the invention is to provide a device which allows simple means an exact and reproducible adjustment of the adjustment and thus a change in the loop length of the web on the roller during operation of the machine.

Die Erfindung löst diese Aufgabe mit den Merkmalen der unabhängigen Ansprüche. Erfindungsgemäß ist die Verstelleinrichtung mittels eines Servoantriebs verstellbar. Mittels dieser Maßnahme ermöglicht die Erfindung eine präzise und stufenlose Verstellung der Verstelleinrichtung und somit eine entsprechende Änderung der Umschlingungslänge der Materialbahn an der Walze im laufenden Betrieb.The invention solves this problem with the features of the independent claims. According to the invention the adjusting device is adjustable by means of a servo drive. Made possible by means of this measure The invention provides a precise and stepless adjustment of the adjusting device and thus a corresponding change in the looping length of the material web on the roller during operation.

Neben einem gegenüber dem Stand der Technik deutlich einfacheren mechanischen Aufbau kann online die Einstellung der Umschlingung über die Maschinensteuerung erfolgen und so bei laufender Maschine die Menge einer auf die Materialbahn aufzutragenden Substanz, beispielsweise Leim, verändert werden. Reproduzierbare Veränderungen der Umschlingung der Walze bei laufender Maschine sind somit möglich. Ebenso kann die Umschlingung in Abhängigkeit von der Produktionsgeschwindigkeit automatisch geändert und/oder angepasst werden.In addition to a comparison with the state of the art significantly simpler mechanical structure can be done online setting the wrap on the machine control and so the amount of material to be applied to the web, such as glue, are changed while the machine is running. Reproducible changes in the wrapping of the roller while the machine is running are thus possible. Likewise, the looping can be changed and / or adjusted automatically depending on the production speed.

Vorzugsweise ist eine verstellbare Längenausgleichseinrichtung zum Ausgleich der durch die Verstellung der Verstelleinrichtung hervorgerufenen Längenänderung der Materialbahn vorgesehen. Hierdurch wird insbesondere beim Anfahren und Herunterfahren der Maschine verhindert, dass Ausschuss aufgrund sich verändernder Längen der Belagpapierblättchen entsteht. Besonders vorteilhaft ist es, wenn auch die Längenausgleichseinrichtung mittels eines Servoantriebs verstellt wird. Eine Getriebeeinheit zwischen Verstelleinrichtung und Längenausgleichseinrichtung ist dann nicht erforderlich. In einer vorteilhaften Ausführungsform der Erfindung wird der Längenausgleich durch Drehzahländerung einer angetriebenen Trommel für die Materialbahn bewirkt.Preferably, an adjustable length compensation device is provided to compensate for the change in length of the material web caused by the adjustment of the adjustment device. As a result, in particular when starting and shutting down the machine prevents rejects due to changing lengths of the tipping paper leaflets. It is particularly advantageous if the length compensation device is also adjusted by means of a servo drive. A gear unit between adjusting and length compensation device is then not required. In an advantageous embodiment of the invention, the length compensation is effected by speed change of a driven drum for the material web.

Vorzugsweise umfasst die Verstelleinrichtung einen Gelenkarm, der weiter vorteilhaft exzentrisch an einem rotierenden Antriebselement der Verstelleinrichtung angelenkt ist. Auf diese Weise werden zwei Totpunkte geschaffen, bei denen eine manuelle Verstellung der Verstelleinrichtung von der Materialbahnseite her nicht möglich ist. In einem dieser Totpunkte weist die Verstelleinrichtung einen maximalen Abstand zu der Walze auf. Dies hat den Vorteil, dass bei ausgeschalteter Maschine, in der die Verstelleinrichtung einen maximalen Abstand zu der Walze aufweist, eine versehentliche bzw. ungewollte Verstellung der Verstelleinrichtung von außen, d.h. von der Materialbahnseite her, nicht möglich ist.Preferably, the adjusting device comprises an articulated arm, which is further advantageous eccentrically articulated to a rotating drive element of the adjusting device. This will be two Dead points created in which a manual adjustment of the adjustment of the material web side is not possible. In one of these dead centers, the adjusting device has a maximum distance to the roller. This has the advantage that when the machine is switched off, in which the adjusting device has a maximum distance from the roller, an inadvertent or unintentional adjustment of the adjusting device from the outside, ie from the material web side, is not possible.

Servoantrieb bezeichnet in dieser Anmeldung wie üblich eine Einheit aus Servomotor und Servoregler. Als Servomotor werden Elektromotoren bezeichnet, die die Kontrolle der Winkelposition ihrer Motorwelle sowie der Drehgeschwindigkeit und Beschleunigung erlauben. Ein Servomotor besteht aus einem Elektromotor, der zusätzlich mit einem Sensor zur Positionsbestimmung ausgestattet ist. Die vom Sensor ermittelte Drehposition der Motorwelle wird kontinuierlich an eine meist außerhalb des eigentlichen Motors angebrachte Regelelektronik übermittelt, den so genannten Servoregler, der die Bewegung des Motors entsprechend einem oder mehreren einstellbaren Sollwerten - wie etwa Soll-Winkelposition der Welle oder Solldrehzahl - in einem Regelkreis regelt.Servo drive referred to in this application, as usual, a unit of servo motor and servocontroller. As a servomotor electric motors are called, which allow the control of the angular position of their motor shaft and the rotational speed and acceleration. A servomotor consists of an electric motor, which is additionally equipped with a sensor for position determination. The determined by the sensor rotational position of the motor shaft is transmitted continuously to a usually outside of the actual motor mounted control electronics, the so-called servo drive, the movement of the motor according to one or more adjustable setpoints - such as target angular position of the shaft or setpoint speed - in a control loop regulates.

Die Erfindung ist vorteilhaft bei einer Beleimungsvorrichtung in einer Filteransetzmaschine anwendbar, jedoch hierauf nicht beschränkt. Generell ist die Erfindung in der Tabak verarbeitenden Industrie überall dort anwendbar, wo die Änderung der Umschlingung einer Walze oder Trommel mit einer Materialbahn mit einfachen Mittel genau und reproduzierbar auch während der Produktion stufenlos einstellbar sein soll. Auch Anwendungen ohne Auftrag einer Substanz auf die Materialbahn sind denkbar, wenn eine erfindungsgemäße Änderung der Umschlingung aus anderen Gründen vorteilhaft ist.The invention is advantageously applicable to a gluing device in a filter attachment machine, but not limited thereto. In general, the invention in the tobacco processing industry is everywhere applicable where the change of the wrap of a roll or drum with a material web with simple means should be adjustable precisely and reproducibly continuously during production. Also, applications without application of a substance to the material web are conceivable if a modification of the loop according to the invention is advantageous for other reasons.

Die Erfindung wird im Folgenden anhand bevorzugter Ausführungsformen unter Bezugnahme auf die beigefügten Figuren erläutert.The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures.

Dabei zeigt

Fig. 1
eine Filteransetzmaschine für eine Zigarettenherstellmaschine; und
Fig. 2
einen schematischen Ausschnitt der Filteransetzmaschine im Bereich der Beleimungsvorrichtung.
It shows
Fig. 1
a filter attachment machine for a cigarette manufacturing machine; and
Fig. 2
a schematic section of the filter attachment machine in the field of gluing device.

Bei der in Figur 1 gezeigten Filteransetzmaschine 10 übergibt eine Einlauftrommel 1 die auf einer nicht gezeigten Strangmaschine produzierten Tabakstöcke an Staffeltrommeln 2, welche die gestaffelt zugeführten Tabakstöcke entstaffeln und in Reihen zu je zwei Stück mit einem Zwischenraum zwischen den Zigaretten an eine Zusammenstelltrommel 3 abgeben. Filterstäbe gelangen aus einem Magazin 4 auf eine Schneidtrommel 6, werden dort zu Filterstopfen doppelter Gebrauchslänge geschnitten, auf einer Staffeltrommel 7 gestaffelt, von einer Schiebetrommel 8 zu einer Reihe hintereinanderliegender Stopfen ausgerichtet und von einer Beschleunigertrommel 9 in die Zwischenräume der Zigarettenreihen auf der Zusammenstelltrommel 3 abgelegt. Die Tabakstock-Filter-Tabakstock-Gruppen werden zusammengeschoben und von einer Übergabetrommel 11 übernommen.At the in FIG. 1 1 shows an infeed drum 1, the tobacco rods produced on a rod machine, not shown, on stubble drums 2, which graduate the staggered tobacco rods and deliver in rows of two pieces with a gap between the cigarettes to a compilation drum 3. Filter rods pass from a magazine 4 to a cutting drum 6, where they are cut into filter stoppers of double use length, staggered on a staggering drum 7, aligned by a sliding drum 8 to a series of consecutive plugs and stored by an accelerator drum 9 in the interstices of the cigarette rows on the compilation drum 3 , The tobacco rod filter tobacco rod groups are pushed together and taken over by a transfer drum 11.

Ein von einer Bobine 13 mittels eines Abzugswalzenpaares 15 abgezogener Belagpapierstreifen 12 wird von einer Beleimungsvorrichtung 14 nachfolgend beleimt und anschließend in einer Schneidvorrichtung 16 auf einer Schneidtrommel 17 von den Messern 43 einer Messertrommel 18 in Belagpapierblättchen zerschnitten. Die abgetrennten Belagpapierblättchen werden an die Tabakstock-Filter-Tabakstock-Gruppen auf der Übergabetrommel 11 angeheftet und auf einer Rolltrommel 19 um die Zigarettenfiltergruppen herumgerollt. Die fertigen Doppelfilterzigaretten werden über eine Trockentrommel 21 einer Schneidtrommel 22 zugeführt und auf dieser durch mittiges Schneiden durch die Filterstopfen hindurch zu Einzelfilterzigaretten konfektioniert. Auf eine Beschreibung des weiteren Produktlaufs durch die Filteransetzmaschine 10 kann hier verzichtet werden, da dies für die Erfindung ohne Bedeutung ist.A tipping paper strip 12 drawn off from a reel 13 by means of a take-off roller pair 15 is subsequently glued by a gluing device 14 and then cut in a cutting device 16 on a cutting drum 17 by the knives 43 of a knife drum 18 in tipping paper flakes. The severed Tipping paper leaflets are adhered to the tobacco rod filter tobacco rod groups on the transfer drum 11 and rolled on a roller drum 19 around the cigarette filter groups. The finished double-filter cigarettes are fed via a drying drum 21 to a cutting drum 22 and assembled thereon by means of central cutting through the filter plugs through to single-filter cigarettes. A description of the further product run through the filter attachment machine 10 can be omitted here, since this is irrelevant to the invention.

Die Beleimungsvorrichtung 14 besteht aus einer in ein Leimreservoir 23 eintauchenden Entnahmewalze 24 und einer Leimauftragswalze 25, welche eine Leimschicht auf den Belagpapierstreifen 12 aufträgt. Selbstverständlich ist auch eine Einwalzenbeleimung möglich. Über eine Umlenkanordnung wird der Belagpapierstreifen 12 zur Schneidtrommel 17 geführt, welche er gegenüber der Messertrommel 18 in einem vorgegebenen Winkelabschnitt umschlingt. Die Messertrommel 18 trägt an ihrem Umfang quer zur Umlaufrichtung verlaufende Messer 43 zum Zerschneiden des Belagpapierstreifens 12 in einzelne Belagpapierblättchen.The gluing device 14 consists of a removal roller 24 dipping into a glue reservoir 23 and a glue application roller 25 which applies a glue layer to the tipping paper strip 12. Of course, a Einwalzenbeleimung is possible. About a deflection of the tipping paper strip 12 is guided to the cutting drum 17, which he wraps around the cutterhead 18 in a predetermined angle section. The knife drum 18 carries at its periphery transverse to the direction of rotation knife 43 for cutting the tipping paper strip 12 into individual tipping paper leaflets.

Ein Teil der Beleimungsvorrichtung 14 ist in Figur 2 genauer dargestellt. Vorzugsweise stromabwärts von der Leimwalze 25 ist eine Anlegeeinrichtung 26 vorgesehen, die hier als ein um das Schwenklager 31 schwenkbar angelenkter Schwenkarm 27 mit einer endseitigen, frei rotierbaren Umlenkrolle 28 für das Belagpapier 12 ausgeführt ist.A part of the gluing device 14 is in FIG. 2 shown in more detail. Preferably, downstream of the glue roller 25, a contact device 26 is provided, which is embodied here as a pivot arm 27 which is pivotably articulated about the pivot bearing 31 and has an end-side, freely rotatable deflection roller 28 for the tipping paper 12.

Vorzugsweise stromaufwärts von der Leimwalze 25 ist die erfindungsgemäße Verstelleinrichtung 29 vorgesehen, die hier vorteilhaft als Gelenkarm 33 mit einer endseitigen, frei rotierbaren Umlenkrolle 34 für das Belagpapier 12 ausgeführt ist. Der Gelenkarm 33 umfasst vorteilhaft einen Schwenkarm 30, der um ein maschinenfestes Schwenklager 32 schwenkbar angelenkt ist. Der Schwenkarm 30 ist über ein freies Schwenkgelenk 36 mit einer Koppelstange 35 verbunden, die am anderen Ende exzentrisch an einer Exzenterscheibe 37 schwenkbar angelenkt ist. Die Exzenterscheibe 37 ist mittels eines nur schematisch dargestellten Servoantriebs 38, der von einer elektronischen Steuereinrichtung 42, beispielsweise der Maschinensteuerung, ansteuerbar ist, rotierbar angetrieben. Der Schwenkarm 30 kann wie in Figur 2 gezeigt zwei unter einem Winkel fest miteinander verbundene Schenkel 30A, 30B aufweisen, dies ist jedoch nicht zwingend erforderlich.Preferably, upstream of the glue roller 25, the adjusting device 29 according to the invention is provided, which advantageously here as an articulated arm 33 with an end, freely rotatable deflection roller 34 is executed for the tipping paper 12. The articulated arm 33 advantageously comprises a pivot arm 30, which is articulated pivotably about a machine-fixed pivot bearing 32. The pivot arm 30 is connected via a free pivot joint 36 with a coupling rod 35 which is pivotally hinged at the other end eccentrically on an eccentric disc 37. The eccentric disc 37 is rotatably driven by means of a servo drive 38 shown only schematically, which is controlled by an electronic control device 42, such as the machine control. The pivot arm 30 can as in FIG. 2 however, it is not absolutely necessary to have two legs 30A, 30B fixedly connected at an angle.

Aufgrund der zuvor beschriebenen Gelenkarmkonstruktion mit Exzenterscheibe 37 ist die Verstelleinrichtung 29 zwischen zwei Extrempositionen verstellbar, nämlich der in Figur 2 gestrichelt dargestellten Position, bei der die Bezugszeichen verschiedener Elemente (Belagpapier 12', Schwenkarm 30', Umlenkrolle 34', Koppelstange 35', Schwenkgelenk 36') mit Apostroph versehen sind, und einer entgegengesetzten Position.Due to the above-described Gelenkarmkonstruktion with eccentric 37, the adjustment 29 is adjustable between two extreme positions, namely the in FIG. 2 dashed line position in which the reference numerals of various elements (tipping paper 12 ', pivot arm 30', pulley 34 ', coupling rod 35', pivot joint 36 ') are provided with apostrophe, and an opposite position.

Die gestrichelt dargestellte Position ist diejenige, bei der die Umlenkrolle 34 einen maximalen Abstand zu der Leimwalze 25 aufweist; der Papierlauf des Belagpapiers ist hier mit 12' gekennzeichnet. Dies entspricht der Ruheposition der Verstelleinrichtung 29, die insbesondere bei ausgeschalteter Maschine automatisch durch entsprechende Ansteuerung des Servomotors 38 eingenommen wird. Die entgegengesetzte Position ist diejenige, bei der die Umlenkrolle 34 einen minimalen Abstand zu der Leimwalze 25 aufweist. Die in Figur 2 gezeigte Betriebsposition (durchgezogener Belagpapierlauf 12) liegt üblicherweise zwischen den beiden beschriebenen Maximalpositionen.The position shown in dashed lines is the one in which the guide roller 34 has a maximum distance to the glue roller 25; the paper run of the pad paper is here marked with 12 '. This corresponds to the rest position of the adjusting device 29, which is taken automatically by appropriate control of the servo motor 38, in particular when the machine is switched off. The opposite position is that in which the diverting pulley 34 is at a minimum distance from the glue roller 25. In the FIG. 2 shown operating position (solid tipping paper run 12) is usually between the two described maximum positions.

Die Wirkungsweise der in Figur 2 gezeigten Vorrichtung wird im Folgenden beschrieben. Das Belagpapier 12 wird durch die Anlegeeinrichtung 26 in Richtung zu der Leimwalze 25 geschwenkt und so die in Figur 2 gezeigte Betriebsbereitschaft der Anlegeeinrichtung 26 hergestellt. Sobald die Produktion gestartet wird, wird der Servoantrieb 38 angesteuert, um den Schwenkarm 30 und somit die Umlenkrolle 34 und mit ihr das Belagpapier 12 an die Leimwalze 25 zu schwenken, bis die gewünschte Umschlingung der Leimwalze 25 mit dem Belagpapier 12 erreicht ist. Sodann kann die Leimübertragung von der Leimwalze 25 auf das Belagpapier 12 und somit die Produktion beginnen.The mode of action of in FIG. 2 The device shown will be described below. The tipping paper 12 is pivoted by the applying device 26 in the direction of the glue roller 25 and so the in FIG. 2 shown operational readiness of the application device 26 produced. Once the production is started, the servo drive 38 is driven to pivot the pivot arm 30 and thus the guide roller 34 and with her the tipping paper 12 to the glue roller 25 until the desired wrapping of the glue roller 25 is reached with the tipping paper 12. Then the glue transfer from the glue roller 25 to the tipping paper 12 and thus production can begin.

Im Produktionsbetrieb kann über den Servoantrieb 38 der Drehwinkel der Exzenterscheibe 37 und über den Gelenkarm 33 die Position der Umlenkrolle 34 und somit die Umschlingung der Leimwalze 25 mit Belagpapier 12 stufenlos wie gewünscht einstellt werden. Aus Figur 2 ist klar ersichtlich, dass sich der Papierlauf des Belagpapiers 12, 12' in der Vorrichtung bzw. in der Maschine aufgrund der Verstellung der Verstelleinrichtung 29 ändert. Des Weiteren ist aus Figur 2 ebenfalls ersichtlich, dass die Umlenkrolle 34 nichtkontaktierend in Bezug auf die Leimwalze 25 arbeitet. Hierdurch unterscheidet sich die Umlenkrolle 34 der Anmeldung von einer kontaktierenden, das Belagpapier 12 an die Leimwalze 25 andrückenden Gegendruckwalze des Standes der Technik.In production mode, the rotational angle of the eccentric disc 37 and the articulated arm 33 via the servo drive 38, the position of the guide roller 34 and thus the looping of the glue roller 25 with tipping paper 12 are continuously adjusted as desired. Out FIG. 2 It is clearly evident that the paper path of the tipping paper 12, 12 'in the device or in the machine changes due to the adjustment of the adjusting device 29. Furthermore, it is off FIG. 2 also seen that the guide roller 34 is non-contacting with respect to the glue roller 25 operates. In this way, the deflection roller 34 of the application differs from a contacting, the tipping paper 12 to the glue roller 25 andrückenden counter pressure roller of the prior art.

Die aufgrund der Schwenkbewegung des Schwenkarms 30 entstehende Längenänderung des Belagpapiers 12 wird mittels einer in Figur 2 nur schematisch dargestellten Längenausgleichseinrichtung 40 ausgeglichen. Die Längenausgleichseinrichtung 40 kann beispielsweise von einer oder den Abzugswalzen 15 aus Figur 1 gebildet werden. Sie wird mittels eines Servoantriebs 41 angetrieben, der von der elektronischen Steuereinrichtung 42, beispielsweise der Maschinensteuerung, unabhängig ansteuerbar ist. Die Drehzahlansteuerung der Längenausgleichseinrichtung 40 erfolgt unter der Maßgabe des geschilderten Längenausgleichs in Abhängigkeit der Position der Verstelleinrichtung 29. Ein entsprechender eindeutiger Zusammenhang ist in der elektronischen Steuereinrichtung 42 hinterlegt.The resulting due to the pivoting movement of the pivot arm 30 change in length of the lining paper 12 is by means of a in FIG. 2 only schematically illustrated length compensation device 40 balanced. The length compensation device 40 may, for example, from one or the take-off rollers 15 from FIG. 1 be formed. It is driven by means of a servo drive 41 which is independently controllable by the electronic control device 42, for example, the machine control. The speed control of the length compensation device 40 is carried out under the proviso of the described length compensation depending on the position of the adjusting device 29. A corresponding unambiguous relationship is stored in the electronic control device 42.

Aufgrund der gekoppelten Steuerung der Servoantriebe 38, 41 kann auf ein aufwändiges mechanisches Getriebe verzichtet werden. Voraussetzung für den geschilderten Längenausgleich durch Drehzahlsteuerung einer Trommel 15 ist, dass die Haftung des Belagpapiers 12 auf der Trommel 15 ausreichend hoch ist, so dass eine Änderung der Drehzahl der Trommel 15 in eine entsprechend geänderte Fördergeschwindigkeit des Belagpapiers 12 umgesetzt wird.Due to the coupled control of the servo drives 38, 41 can be dispensed with a complex mechanical transmission. A prerequisite for the described length compensation by speed control of a drum 15 is that the adhesion of the lining paper 12 on the drum 15 is sufficiently high, so that a change in the rotational speed of the drum 15 is converted into a correspondingly changed conveying speed of the lining paper 12.

Die Längenausgleichseinrichtung 40 ist vorzugsweise stromaufwärts von der Verstelleinrichtung 29 angeordnet. Die Längenausgleichseinrichtung 40 kann beispielsweise auch von einer anderen angetriebenen (Zug-)Trommel in der Maschine gebildet werden.The length compensation device 40 is preferably arranged upstream of the adjusting device 29. The length compensation device 40 can also be formed, for example, by another driven (traction) drum in the machine.

Anstelle der Exzenterscheibe 37 kann auch ein anders geformtes Exzenterelement verwendet werden, beispielsweise eine drehfest an der Welle 44 des Servoantriebs 38 befestigte Stange, deren entferntes Ende drehbar mit der Koppelstange 35 verbunden ist.Instead of the eccentric 37 and a differently shaped eccentric element may be used, for example, a non-rotatably mounted on the shaft 44 of the servo drive 38 rod whose distal end is rotatably connected to the coupling rod 35.

Anstelle des Schwenkarms 30 kann beispielsweise auch ein Linearantrieb für die Umlenkrolle 34 vorgesehen sein.Instead of the pivot arm 30, for example, a linear drive for the guide roller 34 may be provided.

Claims (13)

Vorrichtung zum Fördern einer Materialbahn (12) der Tabak verarbeitenden Industrie, umfassend eine Walze (25) und eine auf die Materialbahn (12) einwirkende Verstelleinrichtung (29), wobei durch Verstellen der Verstelleinrichtung (29) die Umschlingungslänge der Materialbahn (12) an der Walze (25) veränderbar ist, dadurch gekennzeichnet, dass die Verstelleinrichtung (29) mittels eines Servoantriebs (38) verstellbar ist.Apparatus for conveying a material web (12) of the tobacco-processing industry, comprising a roller (25) and an adjusting device (29) acting on the material web (12), wherein by adjusting the adjusting device (29) the length of the belt webbing (12) on the Roller (25) is variable, characterized in that the adjusting device (29) by means of a servo drive (38) is adjustable. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass eine verstellbare Längenausgleichseinrichtung (40) zum Ausgleich der durch die Verstellung der Verstelleinrichtung (29) hervorgerufenen Längenänderung der Materialbahn vorgesehen ist.Apparatus according to claim 1, characterized in that an adjustable length compensation device (40) for compensating caused by the adjustment of the adjusting device (29) caused change in length of the material web is provided. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Längenausgleichseinrichtung (40) mittels eines Servoantriebs (41) verstellbar ist.Apparatus according to claim 2, characterized in that the length compensation device (40) by means of a servo drive (41) is adjustable. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Längenausgleichseinrichtung (40) stromaufwärts von der Verstelleinrichtung (29) angeordnet ist.Apparatus according to claim 2 or 3, characterized in that the length compensation device (40) upstream of the adjusting device (29) is arranged. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Längenausgleichseinrichtung (40) von einer mit variabler Drehzahl angetriebenen Zugtrommel (15) für die Materialbahn (12) gebildet wird.Device according to one of claims 2 to 4, characterized in that the length compensation device (40) is formed by a variable speed driven pulling drum (15) for the material web (12). Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Verstelleinrichtung (29) einen Gelenkarm (33) umfasst.Device according to one of the preceding claims, characterized in that the adjusting device (29) comprises an articulated arm (33). Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Gelenkarm (33) exzentrisch an einem rotierenden Antriebselement (37) der Verstelleinrichtung (29) angelenkt ist.Apparatus according to claim 6, characterized in that the articulated arm (33) is articulated eccentrically on a rotating drive element (37) of the adjusting device (29). Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Gelenkarm (33) einen Schwenkarm (30) mit einer endseitig angeordneten Umlenkrolle (34) für das Belagpapier (12) aufweist.Apparatus according to claim 6 or 7, characterized in that the articulated arm (33) has a pivot arm (30) with an end arranged deflection roller (34) for the tipping paper (12). Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Gelenkarm (33) eine Koppelstange (35) aufweist, die den Schwenkarm (30) mit dem rotierenden Antriebselement (37) verbindet.Apparatus according to claim 8, characterized in that the articulated arm (33) has a coupling rod (35) which connects the pivot arm (30) with the rotary drive element (37). Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Verstelleinrichtung (29) stromaufwärts von der Walze (25) angeordnet ist.Device according to one of the preceding claims, characterized in that the adjusting device (29) is arranged upstream of the roller (25). Maschine (10) der Tabak verarbeitenden Industrie, insbesondere Filteransetzmaschine, dadurch gekennzeichnet, dass die Maschine (10) eine Vorrichtung nach einem der vorangehenden Ansprüche aufweist.Machine (10) of the tobacco processing industry, in particular filter attachment machine, characterized in that the machine (10) comprises a device according to one of the preceding claims. Verfahren zum Fördern einer Materialbahn (12) der Tabak verarbeitenden Industrie, wobei durch Verstellen einer Verstelleinrichtung (29) die Umschlingungslänge der Materialbahn (12) an einer Walze (25) verändert wird, dadurch gekennzeichnet, dass die Verstelleinrichtung (29) mittels eines Servoantriebs (38) verstellt wird.Method for conveying a material web (12) of the tobacco-processing industry, wherein the looping length of the material web (12) on a roll (25) is changed by adjusting an adjusting device (29), characterized in that the adjusting device (29) is adjusted by means of a servo drive (38). Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass der Längenausgleich durch Drehzahländerung einer angetriebenen Trommel (15) für die Materialbahn (12) bewirkt wird.A method according to claim 12, characterized in that the length compensation is effected by speed change of a driven drum (15) for the material web (12).
EP17198557.5A 2016-11-02 2017-10-26 Device and method for conveying a band of material for the tobacco processing industry Withdrawn EP3318138A1 (en)

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CN111096475A (en) * 2019-11-21 2020-05-05 南京智晟达自动化科技有限公司 Equipment capable of improving quality of cigarette mouthpiece and control method thereof

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EP2727652A1 (en) * 2008-04-17 2014-05-07 HAUNI Maschinenbau AG Application of glue to strips of material for the tobacco processing industry
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GB2531034A (en) * 2014-10-08 2016-04-13 British American Tobacco Investments Ltd Adhesive applicator

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