EP1513421A1 - Roll pair for stretching strips of filter material - Google Patents

Roll pair for stretching strips of filter material

Info

Publication number
EP1513421A1
EP1513421A1 EP03732427A EP03732427A EP1513421A1 EP 1513421 A1 EP1513421 A1 EP 1513421A1 EP 03732427 A EP03732427 A EP 03732427A EP 03732427 A EP03732427 A EP 03732427A EP 1513421 A1 EP1513421 A1 EP 1513421A1
Authority
EP
European Patent Office
Prior art keywords
roller
drive
pair
rollers
rollers according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03732427A
Other languages
German (de)
French (fr)
Other versions
EP1513421B1 (en
Inventor
Firdausia Chehab
Stefan Fietkau
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.)
International Tobacco Machinery BV
Original Assignee
International Tobacco Machinery BV
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 International Tobacco Machinery BV filed Critical International Tobacco Machinery BV
Publication of EP1513421A1 publication Critical patent/EP1513421A1/en
Application granted granted Critical
Publication of EP1513421B1 publication Critical patent/EP1513421B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02Manufacture of tobacco smoke filters
    • A24D3/0204Preliminary operations before the filter rod forming process, e.g. crimping, blooming

Definitions

  • the invention relates to a pair of rollers for tensioning strands of filter material in the manufacture of cigarette filters according to the preamble of patent claim 1.
  • the filters of filter cigarettes are usually made from a so-called filter tow made of cellulose acetate. It is drawn off from a bale of cellulose acetate and formed into a sheet or strand before being fed to the machine in which the filter plugs are made. The "cable" drawn off the bale is heavily crimped and is therefore placed under tension to spread it.
  • two spaced-apart roller pairs are provided, of which the one in front in the transport direction is driven at a higher speed than the rear one, in order in this way to tension to create.
  • pairs of rollers used for this purpose are supported at one end on the frame of the machine, one roller consisting of metal and the other a surface layer made of elastic material, e.g. Has rubber or the like.
  • Such arrangements include described in DE 1 532 142 or DE 2008 033.
  • the roller made of metal lying at the top is driven, while the lower roller is supported in a rotating manner.
  • the lower roller is mounted so that it can pivot about a horizontal axis close to its mounting.
  • a linear pneumatic drive is provided to actuate the pivoting. So that a certain stretching of the tow can take place without slipping, the lower roller must be pressed on with a relatively high pressing force. As a result, however, the rubber coating of the lower roller is subject to considerable wear.
  • the invention has for its object to modify the pair of rollers specified that the wear is reduced.
  • the second roller can also be driven by a drive via a second drive shaft and an articulated shaft.
  • the second drive shaft is coupled to the first drive shaft via a gear transmission. An additional drive is therefore not necessary.
  • the second roller is also mounted in such a way that the size of the gap between the rollers can be changed over its length to match the thickness of the material.
  • the contact pressure only has to be so great that the acetate fibers can be held between the spaced-apart roller pairs in order to stretch them in a certain ratio. In this way, the wear of the lining of the second roller is significantly reduced.
  • the second roller is not only pivotally mounted away from the first roller, but can also pivot within limits during operation or suffer an adjustment parallel to itself, if this is appropriate due to the thickness of the material.
  • the resistance that must be overcome with such a movement of the second roller is that of the swivel drive, which therefore expediently acts on the second roller via a spring medium.
  • the actuating device in turn contains a pneumatic cylinder which automatically allows the roller to be pivoted to a limited extent.
  • another actuating device can act on the pivoting of the second roller via a spring medium.
  • the second roller is coupled to the second drive shaft via a universal joint shaft.
  • the second drive shaft can be the output shaft of a gear transmission, the input shaft of which represents the motor shaft.
  • the second roller is hollow.
  • a drive flange is fastened inside, which interacts with a roller bearing, the inner ring of which is pivotally mounted on a sleeve-shaped bearing component about a horizontal axis.
  • the cardan shaft is passed through the sleeve-shaped component.
  • the sleeve-shaped component is in turn pivoted on the frame about a horizontal axis.
  • the bearing component is pivotally mounted and can transmit this movement to the roller.
  • the roller is in turn pivotally mounted on the bearing component, so that it can also be adjusted parallel to itself for the purpose of adaptation to the thickness of the filter tow.
  • the arrangement of the pair of rollers including the gear parts can be designed so that it can be attached to a conventional roller drive.
  • the frame has a vertical support plate on which the drive motor is flanged on one side, as is known per se.
  • a gear box for the gear transmission is attached, which in turn enables the storage of the second roller.
  • a second drive can therefore be provided for the second roller, which preferably runs with a torque that compensates for the bearing friction.
  • the speed of the second drive is set such that the circumferential speed of both rollers is the same so that friction does not occur in the nip.
  • the z. B. can be an air motor or a hydraulic motor, the contact pressure between the rollers can be reduced because the frictional forces of the bearings no longer have to be overcome.
  • a one-way clutch is provided for the rapid run-up phase of the machine up to the production speed. This allows the second roller to follow the first. Under certain circumstances it may be necessary to briefly increase the contact pressure during this start-up time.
  • the system described last represents a relatively elastic drive, which can compensate for speed fluctuations very easily and ensures that the upper and lower rollers move in step.
  • Fig. 1 shows a section through a pair of rollers according to the invention with the lower roller open.
  • Fig. 2 shows the arrangement of Fig. 1 with the lower roller closed.
  • FIG. 3 shows the arrangement of FIG. 1 in a similar representation.
  • FIG. 4 shows a section through the lower roller as shown in FIG. 1, but with a section perpendicular to the section according to FIG. 1.
  • Fig. 5 shows in perspective a second embodiment of a pair of rollers according to the invention.
  • a support plate 10 can be seen, which is part of a machine frame of a machine, which is used to process a so-called filter tow.
  • This system includes two pairs of rollers, one of which is shown in Figures 1 to 3. The second pair can have the same structure or can be of conventional design.
  • FIGS. 1 to 3 An upper roller 12 and a lower roller 14 can be seen in FIGS. 1 to 3.
  • the upper hollow roller is made of metal, while the lower roller 14 has a hollow metal shell 16 and a rubber covering 18.
  • An electric motor 20 is flanged on the left side of the vertical support plate 10. Its drive shaft 22 is coupled via a coupling to a further shaft 24, which extends into a sleeve-shaped bearing body 26.
  • the bearing body 26 is flanged to a gear housing 28 which receives two spur gears 30, 32.
  • the spur gear 30 sits on the shaft 24 and meshes with the second spur gear 32.
  • the transmission ratio is 1: 1.
  • the gear housing 28 is fixedly connected to the support plate 10.
  • the shaft 24 is rotatably connected to a flange 34, which in turn is clamped within the roller 32. A rotation of the shaft 24 thus leads to a corresponding rotation of the roller 12.
  • the roller 12 is only held in the middle at one point. The load is taken up via the shaft 24, which is supported by means of roller bearings 36, 38 within the bearing body 26.
  • a bearing flange 40 is connected to the outside of the gear housing 30 by screw fastening, which by means of two roller bearings 42, 44 rotatably supports a pin 46 which is connected to the lower spur gear 32 in a rotationally fixed manner.
  • a sleeve-shaped bearing component 50 is pivotably supported by the bearing flange 32.
  • this storage takes place about a horizontal axis. 4
  • the sleeve-shaped bearing component 50 supports the inner rings of two roller bearings 56, 58 with the aid of two diametrically opposed bearing pins 52, 54.
  • the outer ring of the bearings 56, 58 is connected to the inside of the roller 14 in a rotationally fixed manner
  • a flange 60 is connected to the outer ring of the roller bearings 56, 58, with which the right end of an articulated shaft 62 is coupled in a rotationally rigid manner.
  • the propeller shaft has a first universal joint 64 and a second universal joint 66, by means of which the latter is articulated to the pin 46.
  • the cardan shaft 62 extends through the interior of the sleeve-shaped bearing component 50. The interior thereof is protected against the ingress of dirt by a protective membrane 68.
  • An angled component 70 is screwed onto the underside of the sleeve-shaped bearing component 50, which in FIG. 1 bears against a stop 72 which is connected to the transmission housing 28.
  • a pneumatic adjusting cylinder arrangement 74 is articulated on the lower leg of the component 70. With the aid of the adjusting cylinder arrangement 74, the lower roller can thus be pivoted upward, as shown in FIG. 2. The pressure at which the two rollers 12, 14 are pressed against one another is predetermined by the pressure in the cylinder arrangement 74.
  • two rollers 12 and 14 are again used, comparable to the rollers 12 and 14 according to FIGS. 1 to 4.
  • the upper roller 12 is driven by the electric motor 20.
  • the lower roller 14 is driven by a separate air motor 80 which is coupled to the lower roller 14 via a one-way clutch 82.
  • the air motor 80 is driven at a speed that ensures that both rollers 12, 14 have the same peripheral speed.
  • the set torque of the compressed air motor 80 compensates for the frictional losses in the bearings.
  • the lower rollers 14 can be pivoted in the same way as described for the above exemplary embodiment.

Landscapes

  • Preliminary Treatment Of Fibers (AREA)
  • Press Drives And Press Lines (AREA)
  • Filtering Materials (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Metal Rolling (AREA)
  • Details Of Cutting Devices (AREA)
  • Paper (AREA)

Abstract

Roller pair for tensioning strands of filter material in the manufacture of cigarette filters with a first roller made of metal which is rotatably driven by a drive and a second roller of which the surface consists of a resilient material, the two rollers being mounted on one side on a frame or the like and the second roller being pivotally mounted about a horizontal axis perpendicular to its longitudinal axis, away from the first roller and towards the latter, and an actuation device for pivoting the second roller, the second roller able to be driven by a drive via a second drive shaft and an articulated shaft and being mounted such that the size of the gap between the rollers can be altered along its length to adapt to the thickness of the material.

Description

Walzenpaar zum Spannen von Strängen aus Filtermaterial Pair of rollers for tensioning strands of filter material
Die Erfindung bezieht sich auf ein Walzenpaar zum Spannen von Strängen aus Filtermaterial bei der Herstellung von Zigarettenfiltern nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a pair of rollers for tensioning strands of filter material in the manufacture of cigarette filters according to the preamble of patent claim 1.
Die Filter von Filterzigaretten werden üblicherweise aus einem sogenannten Filter- tow aus Zelluloseacetat hergestellt. Es wird von einem Ballen aus Zelluloseacetat abgezogen und zu einer Bahn oder einem Strang geformt, bevor es der Maschine zugeleitet wird, in welcher die Filterpfropfen hergestellt werden. Das vom Ballen abgezogene „Kabel" ist stark gekräuselt und wird daher zur Ausbreitung unter Zugspannung gesetzt. Zu diesem Zwecke sind zwei beabstandete Walzenpaare vorgesehen, von denen das in Transportrichtung vorn liegende mit größerer Geschwindigkeit angetrieben wird als das hintere, um auf diese Weise eine Spannung zu erzeugen.The filters of filter cigarettes are usually made from a so-called filter tow made of cellulose acetate. It is drawn off from a bale of cellulose acetate and formed into a sheet or strand before being fed to the machine in which the filter plugs are made. The "cable" drawn off the bale is heavily crimped and is therefore placed under tension to spread it. For this purpose, two spaced-apart roller pairs are provided, of which the one in front in the transport direction is driven at a higher speed than the rear one, in order in this way to tension to create.
Die hierzu verwendeten Walzenpaare sind am Rahmen der Maschine einendig gelagert, wobei eine Walze aus Metall besteht und die andere eine Oberflächen- schicht aus elastischem Material, z.B. Gummi oder dergleichen aufweist. Derartige Vorkehrungen sind u.a. in DE 1 532 142 oder DE 2008 033 beschrieben.The pairs of rollers used for this purpose are supported at one end on the frame of the machine, one roller consisting of metal and the other a surface layer made of elastic material, e.g. Has rubber or the like. Such arrangements include described in DE 1 532 142 or DE 2008 033.
Bei den bekannten Walzenpaaren ist die oben liegende aus Metall bestehende Walze angetrieben, während die untere Walze mitlaufend gelagert ist. Zum Einfädeln des Filtertows ist die untere Walze um eine horizontale Achse nahe ihrer Lagerung schwenkbar gelagert. Zur Betätigung der Verschwenkung ist ein linearer pneumatischer Antrieb vorgesehen. Damit eine gewisse Reckung des Tows schlupffrei erfolgen kann, muß die untere Walze mit relativ hoher Preßkraft angedrückt werden. Hierdurch erfährt die Gummibeschichtung der unteren Walze jedoch einen nicht unbeträchtlichen Verschleiß.In the known pairs of rollers, the roller made of metal lying at the top is driven, while the lower roller is supported in a rotating manner. To thread the filter tow, the lower roller is mounted so that it can pivot about a horizontal axis close to its mounting. A linear pneumatic drive is provided to actuate the pivoting. So that a certain stretching of the tow can take place without slipping, the lower roller must be pressed on with a relatively high pressing force. As a result, however, the rubber coating of the lower roller is subject to considerable wear.
Der Erfindung liegt die Aufgabe zugrunde, Walzenpaar der angegebenen Art dahingehend abzuändern, daß der Verschleiß verringert wird.The invention has for its object to modify the pair of rollers specified that the wear is reduced.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of patent claim 1.
Bei der Erfindung ist auch die zweite Walze von einem Antrieb über eine zweite Antriebswelle und eine Gelenkwelle antreibbar. Nach einer Ausgestaltung der Erfindung ist die zweite Antriebswelle über ein Zahnradgetriebe mit der ersten Antriebswelle gekoppelt. Daher ist ein zusätzlicher Antrieb nicht erforderlich.In the invention, the second roller can also be driven by a drive via a second drive shaft and an articulated shaft. According to one embodiment of the invention, the second drive shaft is coupled to the first drive shaft via a gear transmission. An additional drive is therefore not necessary.
Erfmdungsgemäß ist ferner die zweite Walze so gelagert, daß die Größe des Spaltes zwischen den Walzen in Anpassung an die Dicke des Materials über seine Länge veränderbar ist.According to the invention, the second roller is also mounted in such a way that the size of the gap between the rollers can be changed over its length to match the thickness of the material.
Bei der Erfindung muß der Anpreßdruck nur noch so groß sein, daß die Acetatfasern zwischen den beabstandeten Walzenpaaren festgehalten werden können, um sie in einem bestimmten Verhältnis zu recken. Auf diese Weise wird der Verschleiß des Belags der zweiten Walze deutlich verringert.In the invention, the contact pressure only has to be so great that the acetate fibers can be held between the spaced-apart roller pairs in order to stretch them in a certain ratio. In this way, the wear of the lining of the second roller is significantly reduced.
Bei der Erfindung ist die zweite Walze nicht nur wegschwenkbar von der ersten Walze gelagert, sondern kann auch während des Betriebes in Grenzen eine Ver- schwenkung vornehmen bzw. eine Verstellung parallel zu sich selbst erleiden, wenn dies aufgrund der Dicke des Materials zweckmäßig ist. Der Widerstand, der bei einer derartigen Bewegung der zweiten Walze überwunden werden muß, ist der des Schwenkantriebs, der daher zweckmäßigerweise über ein Federmedium auf die zweite Walze einwirkt. Dies kann z.B. dadurch geschehen, daß die Betätigungsvorrichtung ihrerseits einen Pneumatikzylinder enthält, der automatisch eine begrenzte Verschwenkung der Walze erlaubt. Alternativ kann auch eine andere Betätigungs Vorrichtung über ein Federmedium auf die Verschwenkung der zweiten Walze einwirken.In the invention, the second roller is not only pivotally mounted away from the first roller, but can also pivot within limits during operation or suffer an adjustment parallel to itself, if this is appropriate due to the thickness of the material. The resistance that must be overcome with such a movement of the second roller is that of the swivel drive, which therefore expediently acts on the second roller via a spring medium. This can happen, for example, in that the actuating device in turn contains a pneumatic cylinder which automatically allows the roller to be pivoted to a limited extent. Alternatively, another actuating device can act on the pivoting of the second roller via a spring medium.
Nach einer anderen Ausgestaltung der Erfindung ist die zweite Walze über eine Kreuzgelenkwelle an die zweite Antriebswelle gekoppelt. Die zweite Antriebswelle kann, wie bereits erwähnt, die Abtriebswelle eines Zahnradgetriebes sein, dessen Eingangswelle die Motorwelle darstellt.According to another embodiment of the invention, the second roller is coupled to the second drive shaft via a universal joint shaft. As already mentioned, the second drive shaft can be the output shaft of a gear transmission, the input shaft of which represents the motor shaft.
Nach einer anderen Ausgestaltung der Erfindung ist die zweite Walze hohl. Im Inneren ist ein Antriebsflansch befestigt, der mit einem Rollenlager zusammenwirkt, dessen Innenring um eine horizontale Achse schwenkbar auf einem hülsenförmigen Lagerbauteil gelagert ist. Die Gelenkwelle ist durch das hülsenförmige Bauteil hindurchgeführt. Das hülsenförmige Bauteil ist seinerseits noch einmal um eine horizontale Achse am Rahmen schwenkbar gelagert. Somit ist zum einen das Lagerbauteil schwenkbar gelagert und kann diese Bewegung auf die Walze übertragen. Zum anderen ist die Walze ihrerseits schwenkbar auf dem Lagerbauteil gelagert, so daß sie auch parallel zu sich selbst verstellbar ist zwecks Anpassung an die Dicke des Filtertows.According to another embodiment of the invention, the second roller is hollow. A drive flange is fastened inside, which interacts with a roller bearing, the inner ring of which is pivotally mounted on a sleeve-shaped bearing component about a horizontal axis. The cardan shaft is passed through the sleeve-shaped component. The sleeve-shaped component is in turn pivoted on the frame about a horizontal axis. Thus, on the one hand, the bearing component is pivotally mounted and can transmit this movement to the roller. On the other hand, the roller is in turn pivotally mounted on the bearing component, so that it can also be adjusted parallel to itself for the purpose of adaptation to the thickness of the filter tow.
Die Anordnung des Walzenpaares einschließlich der Getriebeteile kann so ausgeführt sein, daß sie an einen herkömmlichen Walzenantrieb anbringbar ist. Nach einer Ausgestaltung der Erfindung weist der Rahmen eine vertikale Tragplatte auf, an der auf einer Seite der Antriebsmotor angeflanscht ist, wie es an sich bekannt ist. Auf der gegenüberliegenden Seite der Platte ist ein Getriebekasten für das Zahnradgetriebe angebracht, der seinerseits die Lagerung der zweiten Walze ermöglicht. Bei einem Austausch der Walzenpaare in einer Filterherstellungsmaschine durch solche nach der Erfindung ist daher nur ein geringer Aufwand erforderlich. Die Walzen können zusammen mit dem Getriebekasten und dem darin aufgenommenen Getriebe als Einheit an die herkömmliche Tragplatte angebracht werden.The arrangement of the pair of rollers including the gear parts can be designed so that it can be attached to a conventional roller drive. According to one embodiment of the invention, the frame has a vertical support plate on which the drive motor is flanged on one side, as is known per se. On the opposite side of the plate, a gear box for the gear transmission is attached, which in turn enables the storage of the second roller. When the roller pairs in a filter production machine are replaced by those according to the invention, therefore, only little effort is required. The rollers can be attached together with the gear box and the gear housed therein as a unit to the conventional support plate.
Bei Verwendung eines einzigen Antriebs für beiden Walzen sind hohe Fertigungstoleranzen erforderlich, damit beide Walzen mit gleicher Geschwindigkeit laufen. Ist dies nicht der Fall, kommt es wegen Reibung zu Verschleiß. Alternativ kann daher ein zweiter Antrieb vorgesehen werden für die zweite Walze, der vorzugsweise mit einem Drehmoment läuft, der die Lagerreibungen kompensiert. Die Drehzahl des zweiten Antriebs wird derart eingestellt, daß die Umfangsgeschwindigkeit beider Walzen gleich ist, so daß Reibungen im Walzenspalt nicht auftreten.When using a single drive for both rollers, high manufacturing tolerances are required so that both rollers run at the same speed. If this is not the case, wear will occur due to friction. Alternatively, a second drive can therefore be provided for the second roller, which preferably runs with a torque that compensates for the bearing friction. The speed of the second drive is set such that the circumferential speed of both rollers is the same so that friction does not occur in the nip.
Durch den zweiten Antrieb, der z. B. ein Luftmotor oder ein Hydraulikmotor sein kann, kann die Anpreßkraft zwischen den Walzen reduziert werden, weil die Reibungskräfte der Lager nicht mehr überwunden werden müssen.By the second drive, the z. B. can be an air motor or a hydraulic motor, the contact pressure between the rollers can be reduced because the frictional forces of the bearings no longer have to be overcome.
Bei Verwendung eines Druckluftmotors muß berücksichtigt werden, daß dieser relativ träge reagiert. Daher ist nach einer Ausgestaltung der Erfindung für die schnelle Hochlaufphase der Maschine bis zur Produktionsgeschwindigkeit eine Freilaufkupplung vorgesehen. Dadurch kann die zweite Walze der ersten folgen. Es kann unter Umständen erforderlich sein, während dieser Hochfahrzeit den Anpreßdruck kurzzeitig zu erhöhen. Das zuletzt beschriebene System stellt einen relativ elastischen Antrieb dar, der Geschwindigkeitsschwankungen sehr einfach ausgleichen kann und gewährleistet, daß obere und untere Walze im Gleichschritt fahren.When using an air motor it must be taken into account that it reacts relatively sluggishly. Therefore, according to one embodiment of the invention, a one-way clutch is provided for the rapid run-up phase of the machine up to the production speed. This allows the second roller to follow the first. Under certain circumstances it may be necessary to briefly increase the contact pressure during this start-up time. The system described last represents a relatively elastic drive, which can compensate for speed fluctuations very easily and ensures that the upper and lower rollers move in step.
Die Erfindung wird nachfolgend anhand von Zeichnungen näher erläutert.The invention is explained in more detail below with reference to drawings.
Fig. 1 zeigt einen Schnitt durch ein Walzenpaar nach der Erfindung mit geöffneter unterer Walze.Fig. 1 shows a section through a pair of rollers according to the invention with the lower roller open.
Fig. 2 zeigt die Anordnung von Fig. 1 mit geschlossener unterer Walze.Fig. 2 shows the arrangement of Fig. 1 with the lower roller closed.
Fig. 3 zeigt die Anordnung nach Fig. 1 in einer ähnlichen Darstellung.Fig. 3 shows the arrangement of FIG. 1 in a similar representation.
Fig. 4 zeigt einen Schnitt durch die untere Walze gemäß der Darstellung nach Fig. 1, jedoch mit einem Schnitt senkrecht zum Schnitt nach Fig. 1.FIG. 4 shows a section through the lower roller as shown in FIG. 1, but with a section perpendicular to the section according to FIG. 1.
Fig. 5 zeigt perspektivisch eine zweite Ausführungsform eines Walzenpaars nach der Erfindung.Fig. 5 shows in perspective a second embodiment of a pair of rollers according to the invention.
In den Figuren 1 bis 4 ist eine Tragplatte 10 zu erkennen, die Bestandteil eines Maschinenrahmens einer Maschine ist, welche zur Aufbereitung eines sogenannten Filtertows dient. Zu dieser Anlage gehören zwei Paare von Walzen, von denen eines in den Figuren 1 bis 3 dargestellt ist. Das zweite Paar kann einen gleichen Aufbau haben oder herkömmlich ausgeführt sein.1 to 4, a support plate 10 can be seen, which is part of a machine frame of a machine, which is used to process a so-called filter tow. This system includes two pairs of rollers, one of which is shown in Figures 1 to 3. The second pair can have the same structure or can be of conventional design.
In den Figuren 1 bis 3 ist eine obere Walze 12 und eine untere Walze 14 zu erkennen. Die obere hohle Walze besteht aus Metall, während die untere Walze 14 einen hohlen Metallmantel 16 und einen Gummibelag 18 aufweist. Auf der linken Seite der vertikalen Tragplatte 10 ist ein Elektromotor 20 angeflanscht. Seine Antriebswelle 22 ist über eine Kupplung mit einer weiteren Welle 24 gekuppelt, die sich in einen hülsenförmigen Lagerkörper 26 hineinerstreckt. Der Lagerkörper 26 ist an ein Getriebegehäuse 28 angeflanscht, das zwei Stirnzahnräder 30, 32 aufnimmt. Das Stirnrad 30 sitzt auf der Welle 24 und kämmt mit dem zweiten Stirnrad 32. Das Übersetzungsverhältnis ist 1:1. Das Getriebegehäuse 28 ist fest mit der Tragplatte 10 verbunden.An upper roller 12 and a lower roller 14 can be seen in FIGS. 1 to 3. The upper hollow roller is made of metal, while the lower roller 14 has a hollow metal shell 16 and a rubber covering 18. An electric motor 20 is flanged on the left side of the vertical support plate 10. Its drive shaft 22 is coupled via a coupling to a further shaft 24, which extends into a sleeve-shaped bearing body 26. The bearing body 26 is flanged to a gear housing 28 which receives two spur gears 30, 32. The spur gear 30 sits on the shaft 24 and meshes with the second spur gear 32. The transmission ratio is 1: 1. The gear housing 28 is fixedly connected to the support plate 10.
Die Welle 24 ist drehfest mit einem Flansch 34 verbunden, der seinerseits innerhalb der Walze 32 eingespannt ist. Eine Drehung der Welle 24 führt damit zu einer entsprechenden Drehung der Walze 12. Die Walze 12 ist nur an einer Stelle mittig gehalten. Die Lastaufnahme erfolgt über die Welle 24, die mit Hilfe von Wälzlagern 36, 38 innerhalb des Lagerkörpers 26 gelagert ist.The shaft 24 is rotatably connected to a flange 34, which in turn is clamped within the roller 32. A rotation of the shaft 24 thus leads to a corresponding rotation of the roller 12. The roller 12 is only held in the middle at one point. The load is taken up via the shaft 24, which is supported by means of roller bearings 36, 38 within the bearing body 26.
Mit der Außenseite des Getriebegehäuses 30 ist ein Lagerflansch 40 durch Schraubbefestigung verbunden, der mittels zweier Wälzlager 42, 44 einen Zapfen 46 drehbar lagert, der drehfest mit dem unteren Stirnrad 32 verbunden ist.A bearing flange 40 is connected to the outside of the gear housing 30 by screw fastening, which by means of two roller bearings 42, 44 rotatably supports a pin 46 which is connected to the lower spur gear 32 in a rotationally fixed manner.
Mit Hilfe von zwei diametral gegenüberliegenden Lagerzapfen 48, 50 ist vom Lagerflansch 32 ein hülsenförmiges Lagerbauteil 50 schwenkbar gelagert. In den Figuren 1 bis 3 erfolgt diese Lagerung um eine horizontale Achse. Wie ferner aus Fig. 4 hervorgeht, lagert das hülsenförmige Lagerbauteil 50 mit Hilfe von zwei diametral gegenüberliegenden Lagerzapfen 52, 54 die inneren Ringe von zwei Wälzlagern 56, 58. Der äußere Ring der Lager 56, 58 ist drehfest mit der Innenseite der Walze 14 verbunden. Mit dem äußeren Ring der Wälzlager 56, 58 ist ein Flansch 60 verbunden, mit dem das rechte Ende einer Gelenkwelle 62 drehstarr gekoppelt ist. Die Gelenkwelle weist ein erstes Kreuzgelenk 64 und ein zweites Kreuzgelenk 66 auf, durch welch letzteres eine Anlenkung an den Zapfen 46 erfolgt. Wie erkennbar, erstreckt sich die Gelenkwelle 62 durch das Innere des hülsenförmigen Lagerbauteils 50. Deren Inneres ist durch eine Schutzmembran 68 gegenüber Eindringen von Schmutz geschützt.With the aid of two diametrically opposed bearing journals 48, 50, a sleeve-shaped bearing component 50 is pivotably supported by the bearing flange 32. In Figures 1 to 3 this storage takes place about a horizontal axis. 4, the sleeve-shaped bearing component 50 supports the inner rings of two roller bearings 56, 58 with the aid of two diametrically opposed bearing pins 52, 54. The outer ring of the bearings 56, 58 is connected to the inside of the roller 14 in a rotationally fixed manner , A flange 60 is connected to the outer ring of the roller bearings 56, 58, with which the right end of an articulated shaft 62 is coupled in a rotationally rigid manner. The propeller shaft has a first universal joint 64 and a second universal joint 66, by means of which the latter is articulated to the pin 46. As can be seen, the cardan shaft 62 extends through the interior of the sleeve-shaped bearing component 50. The interior thereof is protected against the ingress of dirt by a protective membrane 68.
An das hülsenförmige Lagerbauteil 50 ist an der Unterseite ein winkelförmiges Bauteil 70 angeschraubt, das in Fig. 1 an einem Anschlag 72 anliegt, der mit dem Getriebegehäuse 28 verbunden ist. An dem unteren Schenkel des Bauteils 70 ist eine pneumatische Verstellzylinderanordnung 74 angelenkt. Mit Hilfe der Verstell- zylinderanordnung 74 kann mithin die untere Walze nach oben geschwenkt werden, wie dies in Fig. 2 dargestellt ist. Der Druck, mit dem die beiden Walzen 12, 14 gegeneinander gepreßt werden, wird durch den Druck in der Zylinderanordnung 74 vorgegeben.An angled component 70 is screwed onto the underside of the sleeve-shaped bearing component 50, which in FIG. 1 bears against a stop 72 which is connected to the transmission housing 28. A pneumatic adjusting cylinder arrangement 74 is articulated on the lower leg of the component 70. With the aid of the adjusting cylinder arrangement 74, the lower roller can thus be pivoted upward, as shown in FIG. 2. The pressure at which the two rollers 12, 14 are pressed against one another is predetermined by the pressure in the cylinder arrangement 74.
Während des Betriebes, wie er in Fig. 2 dargestellt ist, wird nicht nur die obere Walze 12 angetrieben, sondern auch die untere Walze 14, und zwar synchron. Die beschriebene Lagerung der unteren Walze 14 ermöglicht jedoch im Betrieb ein Kippen der unteren Walze 14, wie dies in Fig. 3 dargestellt ist oder auch ein Kippen in die entgegengesetzte Richtung, wie dies in Fig. 3 dargestellt ist. Schließlich ist auch möglich, die Walze 14a über einen mehr oder weniger großen Spalt von der oberen Walze 12 zu entfernen. Dabei erstrecken sich die Längsachsen der Walzen 12, 14 parallel zueinander, während die Gelenkwelle 62 und auch das Lagerbauteil 50 nach unten geneigt sind. Der Antrieb der unteren Walze 14 erfolgt jedoch unverändert. Es sei noch erwähnt, daß statt der gezeigten Gelenkwelle auch andere gelenkige Wellen zum Einsatz kommen können oder eine einteilige in sich elastische Welle.During operation, as shown in Fig. 2, not only the upper roller 12 is driven, but also the lower roller 14, in synchronism. The described mounting of the lower roller 14, however, enables the lower roller 14 to tilt in operation, as shown in FIG. 3, or also tilt in the opposite direction, as shown in FIG. 3. Finally, it is also possible to remove the roller 14a from the upper roller 12 via a more or less large gap. The longitudinal axes of the rollers 12, 14 extend parallel to one another, while the drive shaft 62 and also the bearing component 50 are inclined downward. However, the lower roller 14 is driven unchanged. It should also be mentioned that instead of the cardan shaft shown, other articulated shafts can also be used or a one-piece elastic shaft.
Bei der Ausführungsform nach Fig. 5 werden wiederum zwei Walzen 12 und 14 verwendet vergleichbar den Walzen 12 und 14 nach den Fign. 1 bis 4. Die obere Walze 12 wird vom Elektromotor 20 angetrieben. Auch insoweit besteht Übereinstimmung mit der voran beschriebenen Ausführungsform. Die untere Walze 14 wird durch einen getrennten Druckluftmotor 80 angetrieben, der über eine Freilaufkupplung 82 an die untere Walze 14 gekoppelt ist. Der Druckluftmotor 80 wird mit einer Drehzahl angetrieben, die gewährleistet, daß beide Walzen 12, 14 die gleich Umfangsgeschwindigkeit haben. Das eingestellte Drehmoment des Druckluftmotors 80 kompensiert die Reibungsverluste der Lager. Die Schwenkbetätigung der unteren Walzen 14 kann auf gleiche Weise erfolgen wie zum obigen Ausiuhrungsbeispiel beschrieben. In the embodiment according to FIG. 5, two rollers 12 and 14 are again used, comparable to the rollers 12 and 14 according to FIGS. 1 to 4. The upper roller 12 is driven by the electric motor 20. In this respect there is also agreement with the embodiment described above. The lower roller 14 is driven by a separate air motor 80 which is coupled to the lower roller 14 via a one-way clutch 82. The air motor 80 is driven at a speed that ensures that both rollers 12, 14 have the same peripheral speed. The set torque of the compressed air motor 80 compensates for the frictional losses in the bearings. The lower rollers 14 can be pivoted in the same way as described for the above exemplary embodiment.

Claims

A n s p r ü c h e Expectations
1. Walzenpaar zum Spannen von Strängen aus Filtermaterial bei der Herstellung von Zigarettenfiltern, mit einer ersten Walze aus Metall, die von einem Antrieb drehend angetrieben ist und einer zweiten Walze, deren Oberfläche aus elastischem Material besteht, wobei beide Walzen an einem Rahmen oder dergleichen einseitig gelagert sind und die zweite Walze um eine horizontale Achse senkrecht zu ihrer Längsachse von der ersten Walze fort und auf diese zu schwenkbar gelagert ist und einer Betätigungsvorrichtung zur Verschwenkung der zweiten Walze, dadurch gekennzeichnet, daß die zweite Walze (14) von einem Antrieb (20) über eine zweite Antriebswelle (46) und eine Gelenkwelle (62) antreibbar und so gelagert ist, daß die Größe des Spalts zwischen den Walzen (12, 14) in Anpassung an die Dicke des Materials über seine Länge veränderbar ist.1. pair of rollers for tensioning strands of filter material in the manufacture of cigarette filters, with a first roller made of metal, which is driven by a drive and a second roller, the surface of which consists of elastic material, both rollers on one frame or the like on one side are mounted and the second roller is mounted about a horizontal axis perpendicular to its longitudinal axis away from the first roller and can be pivoted thereon and an actuating device for pivoting the second roller, characterized in that the second roller (14) is driven by a drive (20 ) can be driven via a second drive shaft (46) and a cardan shaft (62) and is mounted in such a way that the size of the gap between the rollers (12, 14) can be changed over its length to match the thickness of the material.
2. Walzenpaar nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Walze (14) über eine Kreuzgelenkwelle (62) an die zweite Antriebswelle (46) angekoppelt ist.2. pair of rollers according to claim 1, characterized in that the second roller (14) via a universal joint shaft (62) is coupled to the second drive shaft (46).
3. Walzenpaar nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zweite Antriebswelle (42) über ein Zahnradgetriebe (30, 32) an die erste Antriebswelle (22) gekoppelt ist.3. pair of rollers according to claim 1 or 2, characterized in that the second drive shaft (42) via a gear transmission (30, 32) is coupled to the first drive shaft (22).
4. Walzenpaar nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die zweite Walze (14) hohl ist und innen einen Antriebsflansch (60) aufweist, der mittels eines Rollenlagers (56, 58) um eine horizontale Achse schwenkbar an einem hülsenförmigen Lagerbauteil (50) gelagert ist, durch den die Gelenkwelle (62) geführt ist und das seinerseits über eine horizontale Achse schwenkbar am Rahmen gelagert ist.4. A pair of rollers according to one of claims 1 to 3, characterized in that the second roller (14) is hollow and inside has a drive flange (60) which can be pivoted about a horizontal axis on a sleeve-shaped bearing component by means of a roller bearing (56, 58) (50) is supported by the drive shaft (62) is guided and which in turn is pivotally mounted on the frame via a horizontal axis.
5. Walzenpaar nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Rahmen eine vertikale Tragplatte (10) aufweist, an der auf einer Seite ein Antriebsmotor (20) angeflanscht ist, auf der anderen Seite der Tragplatte (10) ein Getriebegehäuse (28) für das Zahnradgetriebe angebracht ist und die zweite Walze (14) an der Außenseite des Getriebegehäuses (28) schwenkbar gelagert ist.5. A pair of rollers according to claim 3 or 4, characterized in that the frame has a vertical support plate (10) on which on one side a drive motor (20) is flanged, on the other side of the support plate (10) a gear housing (28) is mounted for the gear transmission and the second roller (14) is pivotally mounted on the outside of the gear housing (28).
6. Walzenpaar nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß das Zahnradgetriebe zwei Stirnräder (30, 32) aufweist.6. pair of rollers according to one of claims 3 to 5, characterized in that the gear transmission has two spur gears (30, 32).
7. Walzenpaar nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Walze (14) über einen getrennten zweiten Antrieb (80) angetrieben ist.7. pair of rollers according to claim 1, characterized in that the second roller (14) via a separate second drive (80) is driven.
8. Walzenpaar nach Anspruch 7, dadurch gekennzeichnet, daß ein Hydro- oder Pneumomotor (80) als zweiter Antrieb vorgesehen ist.8. pair of rollers according to claim 7, characterized in that a hydraulic or pneumatic motor (80) is provided as the second drive.
9. Walzenpaar nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß der zweite Antrieb (80) über eine Freilaufkupplung (82) an die zweite Walze (14) gekoppelt ist.9. pair of rollers according to claim 7 or 8, characterized in that the second drive (80) via a one-way clutch (82) is coupled to the second roller (14).
10. Walzenpaar nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß der zweite Antrieb (80) mit einem Drehmoment angetrieben ist, der die Reibungsverluste der Lager kompensiert. 10. A pair of rollers according to one of claims 7 to 9, characterized in that the second drive (80) is driven with a torque which compensates for the frictional losses of the bearings.
EP03732427A 2002-06-20 2003-05-20 Roll pair for stretching strips of filter material Expired - Lifetime EP1513421B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10227378A DE10227378B4 (en) 2002-06-20 2002-06-20 Roller pair for tensioning strands of filter material
DE10227378 2002-06-20
PCT/EP2003/005287 WO2004000046A1 (en) 2002-06-20 2003-05-20 Roll pair for stretching strips of filter material

Publications (2)

Publication Number Publication Date
EP1513421A1 true EP1513421A1 (en) 2005-03-16
EP1513421B1 EP1513421B1 (en) 2006-08-09

Family

ID=29719259

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Application Number Title Priority Date Filing Date
EP03732427A Expired - Lifetime EP1513421B1 (en) 2002-06-20 2003-05-20 Roll pair for stretching strips of filter material

Country Status (7)

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US (1) US7308735B2 (en)
EP (1) EP1513421B1 (en)
AT (1) ATE335413T1 (en)
AU (1) AU2003238363A1 (en)
DE (2) DE10227378B4 (en)
ES (1) ES2266824T3 (en)
WO (1) WO2004000046A1 (en)

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CN103453118A (en) * 2013-08-30 2013-12-18 湖北中烟工业有限责任公司 Double-bearing over-positioning device
CN105852205A (en) * 2016-04-28 2016-08-17 宜兴市新建烟机配件有限公司 Polyurethane rubber roller applied to opener for cigarette filter tip
CH712427A1 (en) * 2016-05-02 2017-11-15 Rieter Ag Maschf Drafting of a textile machine.

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Also Published As

Publication number Publication date
DE10227378A1 (en) 2004-01-08
EP1513421B1 (en) 2006-08-09
ATE335413T1 (en) 2006-09-15
US20060179615A1 (en) 2006-08-17
DE50304585D1 (en) 2006-09-21
AU2003238363A1 (en) 2004-01-06
WO2004000046A1 (en) 2003-12-31
US7308735B2 (en) 2007-12-18
ES2266824T3 (en) 2007-03-01
DE10227378B4 (en) 2008-07-17

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