EP1325685B1 - Apparatus and method for treating a strip of filter material in the tobacco industry - Google Patents

Apparatus and method for treating a strip of filter material in the tobacco industry Download PDF

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Publication number
EP1325685B1
EP1325685B1 EP02027381A EP02027381A EP1325685B1 EP 1325685 B1 EP1325685 B1 EP 1325685B1 EP 02027381 A EP02027381 A EP 02027381A EP 02027381 A EP02027381 A EP 02027381A EP 1325685 B1 EP1325685 B1 EP 1325685B1
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EP
European Patent Office
Prior art keywords
air
strip
filter
stretching
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02027381A
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German (de)
French (fr)
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EP1325685A2 (en
EP1325685A3 (en
Inventor
Stephan Wolff
Stephan Peters
Harald Ditombee
Jürgen Pehmöller
Thomas Meins
Volker Fricke
Peter-Franz Arnold
Sönke Horn
Joachim Glogasa
Jens Moje
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Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
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Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP1325685A2 publication Critical patent/EP1325685A2/en
Publication of EP1325685A3 publication Critical patent/EP1325685A3/en
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Publication of EP1325685B1 publication Critical patent/EP1325685B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming

Definitions

  • the invention relates to a device and a method for processing at least one strip Filter material for the tobacco processing industry, in particular filter tow strips, along a conveyor line and with at least one compressed air element, in particular for the strip.
  • filter rods for the Tobacco industry will strip out one Filter material, in particular filter tow, from each other connected fibers, e.g. of cellulose acetate, continuous from a supply, e.g. from a bale, deducted, spread, stretched and with a solvent, e.g. Triazetin sprayed, laterally ruffled, one with blast air applied nozzle and then a funnel supplied, from which the processed and compressed Filter strip fed to a filter rod machine becomes.
  • a solvent e.g. Triazetin sprayed, laterally ruffled
  • a funnel supplied from which the processed and compressed Filter strip fed to a filter rod machine becomes.
  • the filter rod machine is the one to Filter strand shaped strips under further compression continuously wrapped with a wrapping material strip, then filter rods from the wrapped filter strand be cut off.
  • Proven processing equipment of the type described above are named AF 1, AF 2 and AF 3 by the Applicant built and sold.
  • Proven filter rod machines the type described are under the Designation KDF 2 and KDF 3 built by the applicant and distributed.
  • the object is in a device of the beginning mentioned type achieved in that at least one Suction device is provided, the suction side of the Conveyor section of the strip is arranged and the pressure side connected to the compressed air element.
  • a compressed air element for a strip represents, for example, a Spreader nozzle, which from a compressed air source with Compressed air is supplied. Through the return of Suction air as blowing air to the compressed air can on the Compressed air source can be dispensed with. At the same time Impurities e.g. avoided in the area of the stretch zone, because the tow fibers are led away from this area.
  • other Compressed air organs as a spreader nozzle of the suction device be supplied with air.
  • the suction device in particular on the suction side, at least one filter device and / or one Cleaning device for the suction air has.
  • a filter device can coarsen the air flow and fine dust particles are removed, so that clean Blowing air to the compressed air organs are passed can. This will clean the machine and the environment held, e.g. fine tow fibers retained and should not be blown into the ambient air.
  • the suction device especially on the pressure side, at least one, preferably controllable throttle device to Blowing air to the compressed air consumers with an adjustable To deliver pressure.
  • control device and / or control device for the suction device is provided, as this provides an optimal setting and function for the suction and the individual spreader nozzles For example, is guaranteed.
  • the suction device can regulated and / or controlled accordingly become.
  • an operation of the device taking into account an economic mode of operation be optimized.
  • control device and / or the control device by means of a machine center, in particular programmable logic controller (PLC) is formed.
  • PLC programmable logic controller
  • the machine center will be all processes on a machine aggregate or in the entire machine summarized controlled and / or , regulated. As suitable control of such complex Machines has become the programmable logic controller proven.
  • the device according to the invention is advantageously further developed in that the suction side of the suction device in a stretch zone of a stretch of the Conveyor line is arranged.
  • This can be a Device as known from DE 198 11 014 A1, be improved because already a suction device is available. This suction can total be operated even more economically.
  • the suctioned Air filtered and / or cleaned.
  • the air pressure side preferably by means of a, in particular controllable, Throttle device, throttled.
  • Optimum operation can be achieved if the Air flow as a function of the air pressure on the Regulated suction side and / or the pressure side and / or is controlled.
  • PLC programmable logic Control
  • the air is at the end a section of the conveyor line, in particular Stretching line and / or order section and / or Raffumble, sucked so that existing suction can be used.
  • the processing device for a withdrawn from a bale strip 2 Filter tow, e.g. Cellulose acetate, with related Fibers, the following main assemblies, the strip 2 passes through, on: a withdrawal line 3, a Vorreckorder 4, a stretching line 6, a job path 7, a Raffsort 8 and a feed line.
  • the feed path 9 serves to supply a strip section to an inlet device of a schematic shown filter rod machine 11, e.g. from in the tobacco processing industry known type KDF 2 or KDF 3 of the Applicant.
  • the trigger line 3 in which the one from here illustrated bales withdrawn filter material strip 2 is conveyed, has a spreader nozzle 16, the Compressed air instead of a compressed air source from the According to the invention described below suction device receives.
  • the compressed air is used to spread the subsidized Filter Tert tissue in this section.
  • One - controllable spreading gland is e.g. in US-A-4,259 769 described.
  • rollers 22, 23 are from Towed tow, i. they run with more or less resistance empty. If necessary, you can be driven by a motor. You can also in one in a known manner with controllable force against each other be pressed.
  • the filter tow 2 pre-stretched. It can be a controllable drying device trained conditioning device happen.
  • a drying device is, for example, in EP 654 224 B1 described in detail.
  • the stretching line 6 connects, in the filter tow 2 vertically or with a vertical component conveyed from top to bottom becomes.
  • a another pair of rollers 39 from motor-driven Rolls 41, 42, the peripheral speeds something are larger than the peripheral speeds of the rollers 26, 27, so that defines the elastic filter tow is stretched.
  • the roller pairs 24 and 39 thus form the actual stretching device.
  • the rollers 26 and 41 have a rigid, grooved surface, each one compliant surface of the rollers 27 and 42 touch.
  • Such roll configurations are by the aforementioned Filter Tertters AF 1, AF 2 and AF 3 of the Applicant known and e.g. in US-A-3,317,965 and US-A-3 255 506.
  • the roller pair 39 is a further pair of rollers 43 downstream, whose peripheral speeds are lower than those of the rollers 41, 42, so that the filter tow 2 relaxes slightly during its promotion.
  • the roller pair 43 again has a roller 44 with a rigid, grooved Surface on that with the yielding surface the rollers 46 is in contact.
  • the roller pairs 39 and 43 thus limit that, in the present case approximately horizontally arranged, order line 7, in an applicator in the form of a spraying device is arranged.
  • the spraying device can be formed as described in US-A-4,313,974 and sprayed the transported filter tow 2 of one or both sides with fine droplets of one Solvent for the filter tow material e.g. Triacetin.
  • the spraying device is preceded by a spreader nozzle 18, so that the stretched filter tow 2 spread and the solvent has a larger surface area Wet filter tape 2.
  • This spreader nozzle 18 and the front of the pair of rollers 21 of the pre-stretching 4 upstream spreading nozzle 17 are compressed air applied in the manner described below.
  • a Raffset 8 Downstream of the order section 7 is a Raffset 8, in which the filter tow 2 with predominantly vertical Component of a pair of rollers 51 with motor driven rollers 52, 53 conveyed from bottom to top becomes.
  • the roller 52 has again a rigid, grooved Surface, the touch of the roller a yielding Surface.
  • a supply path 9 Downstream of the guide roller pair 51 is a supply path 9, in which the filter tow strip 2 of adhesive, for further processing adverse electrostatic Charges are freed.
  • the feeder range 9 is also a known so-called. Stopfdüsa present, with compressed air from a compressed air source or beanfschlagt in the manner of the invention carried out below. After passing through the Stopfdüse the filter tow is a Filter strand machine 11 supplied.
  • Wind tunnel 32 passed, in which a parallel extending to the conveying direction of the filter tow band Air flow is generated.
  • Air flow is the wind tunnel 32 at the end of the stretch 6 with a with the suction side of a fan 38 connected suction air connection 54 provided.
  • the wind tunnel 32 is open and thus forms a Air intake off.
  • the wind tunnel 32 is through duct walls 33, 34 limited, the transverse to the broad side of the Filter Tertz strip are adjustable.
  • alternative Designs can the air in the wind tunnel 32 in the area of the roller pair 39, and in particular in the region of Inlet gap of the pair of rollers 39 are sucked.
  • the wind tunnel 32 is below via the suction air connection 54 Interposition of a filter mat 36 via the connecting line 37 connected to the blower 38.
  • the Filter mat 36 removes entrained from the suction air flow Particles and fiber particles as well as dust.
  • the fan 38 is also connected to a control unit 31, which regulates the performance of the compressor fan 38.
  • a throttle unit 49 connected to the blower 38.
  • the throttle unit 49 is connected with respect to the Consumer groups by means of a connected to it Control unit 47 adjustable.
  • the spreader nozzle 16 has a U-shaped Housing 71, a hinge joint 73 at a Leg of the "U" s, on which a lid 72 hinged is.
  • a channel 74 inside the Spreader nozzle 16 is formed. Through the channel 74 is in a plane perpendicular to the plane shown Transported filter tow.
  • the spreader nozzle 16 is a flat, hinged nozzle in which the tow running.
  • the nozzle 16 During filter production, the nozzle 16 must be fixed be closed. For this purpose, at the hinge joint 73rd opposite legs 69 of the housing 71 magnets 75 trained. To make a good lock is the magnet 75 of the housing 71 is compared with a magnet 76. Alternatively, the lid 72 in the region of Magnet 75 be magnetic.
  • the Nozzle 16 can be opened to insert the filter tow. Subsequently, the nozzle 16 is closed again.
  • the strength of the magnets 75 and 76 is chosen so that a Open during operation of the machine or the Device is not possible.
  • a Handle 77 is provided, which is rotatable about a pivot point 78 is mounted and has a lever arm 79, the at Opening the lid 72, the leg 69 of the housing 71st touched.
  • handle 77 and lever arm 79 Due to suitable lever ratios of handle 77 and lever arm 79 can with a small force of Distance between the magnets 75 and 76 increased which also reduces the magnetic forces become.
  • the handle 77 is designed as a lever, so that the separation of the magnets 75, 76 in addition mechanically is supported. This will be much less Force needed to open the lid 72 without the Locking function of the nozzle 16 to affect.

Abstract

The machine for making filter strip for cigarettes has a conveyor (3,4,6-9) to feed the filter strand (2) using an air pressure drive nozzle (16-18). There is at least one suction head (38) mounted with its suction side on the conveyor feed path and connected to the nozzle. The suction head can have a filter (36) and a cleaner. Claims include a method of feeding filter material using the machine.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Aufbereiten wenigstens eines Streifens aus Filtermaterial für die tabakverarbeitende Industrie, insbesondere Filtertowstreifen, entlang einer Förderstrecke und mit wenigstens einem Druckluftorgan, insbesondere für den Streifen.The invention relates to a device and a method for processing at least one strip Filter material for the tobacco processing industry, in particular filter tow strips, along a conveyor line and with at least one compressed air element, in particular for the strip.

Eine derartige Vorrichtung ist aus EP 654 224 B1 bekannt. Zum Herstellen von Filterstäben für die tabakverarbeitende Industrie wird ein Streifen aus Filtermaterial, insbesondere Filtertow, aus miteinander verbundenen Fasern, z.B. aus Celluloseacetat, fortlaufend von einem Vorrat, z.B. von einem Ballen, abgezogen, ausgebreitet, gereckt und mit einem Lösungsmittel, z.B. Triazetin besprüht, seitlich gerafft, einer mit Blasluft beaufschlagten Düse und anschließend einem Trichter zugeführt, von dem aus der aufbereitete und verdichtete Filterstreifen einer Filterstrangmaschine zugeführt wird. In der Filterstrangmaschine wird der zu einem Filterstrang geformte Streifen unter weiterer Verdichtung fortlaufend mit einem Hüllmaterialstreifen umhüllt, wonach von dem umhüllten Filterstrang Filterstäbe abgeschnitten werden.Such a device is known from EP 654 224 B1. For producing filter rods for the Tobacco industry will strip out one Filter material, in particular filter tow, from each other connected fibers, e.g. of cellulose acetate, continuous from a supply, e.g. from a bale, deducted, spread, stretched and with a solvent, e.g. Triazetin sprayed, laterally ruffled, one with blast air applied nozzle and then a funnel supplied, from which the processed and compressed Filter strip fed to a filter rod machine becomes. In the filter rod machine is the one to Filter strand shaped strips under further compression continuously wrapped with a wrapping material strip, then filter rods from the wrapped filter strand be cut off.

Bewährte Aufbereitungsgeräte der vorbeschriebenen Art werden unter der Bezeichnung AF 1, AF 2 und AF 3 von der Anmelderin gebaut und vertrieben. Bewährte Filterstrangmaschinen der beschriebenen Art werden unter der Bezeichnung KDF 2 und KDF 3 von der Anmelderin gebaut und vertrieben.Proven processing equipment of the type described above are named AF 1, AF 2 and AF 3 by the Applicant built and sold. Proven filter rod machines the type described are under the Designation KDF 2 and KDF 3 built by the applicant and distributed.

In DE 198 11 014 A1 ist ebenfalls eine Vorrichtung zum Herstellung von Filterstäben für stabförmige Artikel der tabakverarbeitenden Industrie beschrieben, bei der der Filtertowstreifen entlang einer Reckstrecke, Auftragsstrecke, Raffstrecke, durch einen mit einer in Förderrichtung des Towstreifens geführten Luftströmung beaufschlagten Windkanal hindurchgeführt ist. Die den Filtertowstreifen begleitende laminare Luftströmung verhindert Luftwirbel, so daß eine störungsfreie, bzw. homogene spezifische Towbehandlung in der Reckzone, der Entspannungszone und Raffzone gewährleistet ist. Die Luftströmung dient gleichzeitig als Transportmedium zum Entfernen von abgelösten bzw. lose haftenden Towfasern, so daß auch bei hohen Fördergeschwindigkeiten des Filtertowstreifens eine homogene Aufbereitung und Verteilung des Filtermaterials im Filterstrang erreicht wird. In DE 198 11 014 A1 is also an apparatus for Production of filter rods for rod-shaped articles of the Tobacco industry described in the Filter tow strips along a stretch, order line, Raffstrecke, by one with a in the conveying direction of the towstrip guided airflow Wind tunnel is passed. The the Filter tow strips accompanying laminar air flow prevents air turbulence, so that a trouble-free, or homogeneous specific tow treatment in the stretch zone, the Relaxation zone and Raffzone is guaranteed. The Air flow serves as a transport medium for Removal of detached or loosely adherent tow fibers, so that even at high conveying speeds of the Filter teaspoon a homogeneous processing and Distribution of the filter material in the filter strand reached becomes.

Ausgehend von dem Stand der Technik ist es Aufgabe der Erfindung, die Verunreinigung der Vorrichtung durch Staubpartikel, insbesondere Towfasern, zu verringern und gleichzeitig den Betrieb einer derartigen Vorrichtung wirtschaftlicher zu gestalten.Based on the state of the art, it is the task of Invention, the contamination of the device by To reduce dust particles, especially tow fibers, and at the same time the operation of such a device more economical.

Die Aufgabe wird bei einer Vorrichtung der eingangs genannten Art dadurch gelöst, daß wenigstens eine Absaugeinrichtung vorgesehen ist, die saugseitig an der Förderstrecke des Streifens angeordnet ist und druckseitig mit dem Druckluftorgan verbunden ist. Ein Druckluftorgan für ein Streifen stellt bspw. eine Ausbreiterdüse dar, die von einer Druckluftquelle mit Druckluft versorgt wird. Durch die Rückführung von Saugluft als Blasluft zu dem Druckluftorgan kann auf die Druckluftquelle verzichtet werden. Gleichzeitig werden Verunreinigungen z.B. im Bereich der Reckzone vermieden, da die Towfasern aus diesem Bereich weggeführt werden. Selbstverständlich können erfindungsgemäß auch andere Druckluftorgane als eine Ausbreiterdüse von der Absaugeinrichtung mit Luft versorgt werden.The object is in a device of the beginning mentioned type achieved in that at least one Suction device is provided, the suction side of the Conveyor section of the strip is arranged and the pressure side connected to the compressed air element. A compressed air element for a strip represents, for example, a Spreader nozzle, which from a compressed air source with Compressed air is supplied. Through the return of Suction air as blowing air to the compressed air can on the Compressed air source can be dispensed with. At the same time Impurities e.g. avoided in the area of the stretch zone, because the tow fibers are led away from this area. Of course, according to the invention, other Compressed air organs as a spreader nozzle of the suction device be supplied with air.

Zur Verringerung von Verunreinigungen ist es vorteilhaft, wenn die Absaugeinrichtung, insbesondere saugseitig, wenigstens eine Filtereinrichtung und/oder eine Reinigungseinrichtung für die Saugluft aufweist. Durch eine Filtereinrichtung bspw. können dem Luftstrom grobe und feine Staubpartikel entzogen werden, so daß saubere Blasluft an die Druckluftorgane weitergegeben werden kann. Dadurch werden die Maschine und die Umwelt sauber gehalten, da z.B. feine Towfasern zurückgehalten und nicht in die Umgebungsluft geblasen werden.To reduce contamination, it is advantageous if the suction device, in particular on the suction side, at least one filter device and / or one Cleaning device for the suction air has. By For example, a filter device can coarsen the air flow and fine dust particles are removed, so that clean Blowing air to the compressed air organs are passed can. This will clean the machine and the environment held, e.g. fine tow fibers retained and should not be blown into the ambient air.

In einer Weiterbildung der Erfindung weist die Absaugeinrichtung, insbesondere druckseitig, wenigstens eine, vorzugsweise steuerbare, Drosseleinrichtung auf, um Blasluft an die Druckluftverbraucher mit einem einstellbaren Druck zu liefern.In a further development of the invention, the suction device, especially on the pressure side, at least one, preferably controllable throttle device to Blowing air to the compressed air consumers with an adjustable To deliver pressure.

Ferner ist es von Vorteil, wenn eine Regeleinrichtung und/oder Steuereinrichtung für die Absaugeinrichtung vorgesehen ist, da hierdurch eine optimale Einstellung und Funktion für die Absaugung und der einzelnen Ausbreiterdüsen bspw. gewährleistet ist.Furthermore, it is advantageous if a control device and / or control device for the suction device is provided, as this provides an optimal setting and function for the suction and the individual spreader nozzles For example, is guaranteed.

In einer Weiterbildung der Erfindung ist vorteilhafterweise wenigstens eine Druckmeßeinrichtung saugseitig und/oder druckseitig mit der Regeleinrichtung und/oder Steuereinrichtung verbunden. Durch die Erfassung des Unterdrucks auf der Saugseite und/oder durch die Druckmessungen an den Druckluftorganen, kann die Absaugeinrichtung entsprechend geregelt und/oder gesteuert werden. Außerdem kann somit ein Betrieb der Vorrichtung unter Berücksichtigung einer wirtschaftlichen Betriebsweise optimiert werden.In a further development of the invention is advantageously at least one pressure measuring device on the suction side and / or pressure side with the control device and / or Control device connected. By capturing the Vacuum on the suction side and / or by the pressure measurements on the compressed air organs, the suction device can regulated and / or controlled accordingly become. In addition, thus, an operation of the device taking into account an economic mode of operation be optimized.

Besonders vorteilhaft ist es, wenn die Regeleinrichtung und/oder die Steuereinrichtung mittels einer Maschinenzentrale, insbesondere speicherprogrammierbare Steuerung (SPS), ausgebildet ist. In der Maschinenzentrale werden sämtliche Prozesse an einem Maschinenaggregat bzw. in der gesamten Maschine zusammenfassend gesteuert und/oder . geregelt. Als geeignete Steuerung solcher komplexen Maschinen hat sich die speicherprogrammierbare Steuerung bewährt.It is particularly advantageous if the control device and / or the control device by means of a machine center, in particular programmable logic controller (PLC) is formed. In the machine center will be all processes on a machine aggregate or in the entire machine summarized controlled and / or , regulated. As suitable control of such complex Machines has become the programmable logic controller proven.

Die erfindungsgemäße Vorrichtung wird vorteilhafterweise dadurch weitergebildet, daß die Saugseite der Absaugeinrichtung in einer Reckzone einer Reckstrecke der Förderstrecke angeordnet ist. Hierdurch kann eine Vorrichtung, wie sie aus DE 198 11 014 A1 bekannt ist, verbessert werden, da bereits eine Absaugeinrichtung vorhanden ist. Diese Absaugeinrichtung kann insgesamt noch wirtschaftlicher betrieben werden. Zudem kann auf den Einbau von Druckluftquellen für die Druckluftorgane vollständig verzichtet werden. In einer Alternative ist die Saugseite der Absaugeinrichtung am Ende eines Streckenabschnitts der Förderstrecke, insbesondere Reckstrecke und/oder Auftragsstrecke und/oder Raffstrecke, angeordnet.The device according to the invention is advantageously further developed in that the suction side of the suction device in a stretch zone of a stretch of the Conveyor line is arranged. This can be a Device as known from DE 198 11 014 A1, be improved because already a suction device is available. This suction can total be operated even more economically. In addition, can on the installation of compressed air sources for the compressed air organs completely dispensed with. In an alternative is the suction side of the suction device at the end of a Track section of the conveyor line, in particular Stretching line and / or order section and / or Raffstrecke, arranged.

Ferner besteht die Lösung beim Verfahren der eingangs genannten Art darin, daß Luft an der Förderstrecke abgesaugt wird und an das Druckluftorgan geliefert wird. Eine Absaugeinrichtung kann daher gleichzeitig die Funktionen der Luftansaugung und der Luftbeförderung verwirklichen. Daneben ergeben sich auch konstruktive Verbesserungen, da auf eine Druckluftquelle für das Druckluftorgan verzichtet werden kann.Furthermore, the solution in the method of the above mentioned type in that air at the conveyor line is sucked off and delivered to the compressed air element. A suction device can therefore simultaneously the Functions of air intake and air transportation realize. In addition, there are constructive Improvements, since on a source of compressed air for the Compressed air can be dispensed with.

In einer Weiterbildung der Erfindung wird die abgesaugte Luft gefiltert und/oder gereinigt.In one embodiment of the invention, the suctioned Air filtered and / or cleaned.

Weiterhin wird vorteilhafterweise die Luft druckseitig, vorzugsweise mittels einer, insbesondere steuerbaren, Drosseleinrichtung, gedrosselt.Furthermore, advantageously the air pressure side, preferably by means of a, in particular controllable, Throttle device, throttled.

Darüber hinaus ist es von Vorteil, wenn die Strömung der Luft geregelt und/oder gesteuert wird.In addition, it is beneficial if the flow of Air is regulated and / or controlled.

Ein optimaler Betrieb läßt sich erreichen, wenn die Luftströmung in Abhängigkeit des Luftdrucks auf der Saugseite und/oder der Druckseite geregelt und/oder gesteuert wird. Optimum operation can be achieved if the Air flow as a function of the air pressure on the Regulated suction side and / or the pressure side and / or is controlled.

Vorteilhafterweise wird die Luftströmung mittels einer Maschinenzentrale, insbesondere speicherprogrammierbare Steuerung (SPS), geregelt und/oder gesteuert.Advantageously, the air flow by means of a Machine center, in particular programmable logic Control (PLC), regulated and / or controlled.

Im Falle, daß zuviel Blas- oder Druckluft während des Betriebs entsteht, ist es von Vorteil, wenn, insbesondere überschüssige, Luft auf der Druckseite an die Atmosphäre abgegeben wird. Neben einer Druckentlastung findet auch eine Reinigung der Umgebungsluft hierdurch statt.In the event that too much blow or compressed air during the Operation arises, it is beneficial if, in particular excess, air on the pressure side to the Atmosphere is delivered. In addition to a pressure relief also finds a cleaning of the ambient air hereby instead of.

Weiterhin wird bevorzugt die Luft in einer Reckzone einer Reckstrecke der Förderstrecke abgesaugt.Furthermore, preference is given to the air in a stretching zone aspirated a stretch of the conveyor line.

Alternativ wird vorteilhafterweise die Luft am Ende eines Streckenabschnitts der Förderstrecke, insbesondere Reckstrecke und/oder Auftragsstrecke und/oder Raffstrecke, abgesaugt, so daß bestehende Absaugeinrichtungen genutzt werden können.Alternatively, advantageously, the air is at the end a section of the conveyor line, in particular Stretching line and / or order section and / or Raffstrecke, sucked so that existing suction can be used.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen in den Zeichnungen ohne Beschränkung des allgemeinen Erfindungsgedankens exemplarisch beschrieben. Es zeigen:

Fig. 1
schematisch eine Aufbereitungsvorrichtung gemäß der Erfindung und
Fig. 2
einen Querschnitt durch eine Ausbreiterdüse.
The invention will be described by way of example with reference to embodiments in the drawings without limiting the general inventive idea. Show it:
Fig. 1
schematically a treatment device according to the invention and
Fig. 2
a cross section through a spreader nozzle.

Gemäß Fig. 1 weist die Aufbereitungsvorrichtung für einen von einem Ballen abgezogenen Streifen 2 aus Filtertow, z.B. Celluloseacetat, mit zusammenhängenden Fasern, folgende Hauptbaugruppen, die der Streifen 2 nachfolgend durchläuft, auf: eine Abzugsstrecke 3, eine Vorreckstrecke 4, eine Reckstrecke 6, eine Auftragsstrecke 7, eine Raffstrecke 8 und eine Zufuhrstrecke 9. Die Zufuhrstrecke 9 dient zum Zuführen eines Streifenabschnitts zu einer Einlaufeinrichtung einer schematisch dargestellten Filterstrangmaschine 11, z.B. vom in der tabakverarbeitenden Industrie bekannten Typ KDF 2 oder KDF 3 der Anmelderin.According to Fig. 1, the processing device for a withdrawn from a bale strip 2 Filter tow, e.g. Cellulose acetate, with related Fibers, the following main assemblies, the strip 2 passes through, on: a withdrawal line 3, a Vorreckstrecke 4, a stretching line 6, a job path 7, a Raffstrecke 8 and a feed line. 9 The feed path 9 serves to supply a strip section to an inlet device of a schematic shown filter rod machine 11, e.g. from in the tobacco processing industry known type KDF 2 or KDF 3 of the Applicant.

Die Abzugsstrecke 3, in der der von einem hier nicht dargestellten Ballen abgezogenen Filtermaterialstreifen 2 gefördert wird, weist eine Ausbreiterdüse 16 auf, die Druckluft anstelle von einer Druckluftquelle von der erfindungsgemäßen unten beschriebenen Absaugeinrichtung erhält. Die Druckluft dient zur Ausbreitung des geförderten Filtertowgewebes in diesem Abschnitt. Eine - steuerbare - Ausbreiterdrüse ist z.B. in der US-A-4 259 769 beschrieben.The trigger line 3, in which the one from here illustrated bales withdrawn filter material strip 2 is conveyed, has a spreader nozzle 16, the Compressed air instead of a compressed air source from the According to the invention described below suction device receives. The compressed air is used to spread the subsidized Filter Tert tissue in this section. One - controllable spreading gland is e.g. in US-A-4,259 769 described.

Über eine Umlenkrolle 19 gelangt der Filtertowstreifen 2 in die Vorreckstrecke 4, die einerseits von einem Walzenpaar 21 mit den Walzen 22, 23, andererseits von einem Walzenpaar 24 mit motorisch angetriebenen Walzen 26, 27 begrenzt ist. Die Walzen 22, 23 werden vom Towstreifen geschleppt, d.h. sie laufen mit mehr oder weniger Widerstand leer. Wenn erforderlich, können sie motorisch angetrieben werden. Sie können auch in einer an sich bekannten Weise mit steuerbarer Kraft gegeneinander gedrückt werden.About a pulley 19 of the filter tow 2 passes in the Vorreckstrecke 4, on the one hand by a Roller pair 21 with the rollers 22, 23, on the other hand of a pair of rollers 24 with motor-driven rollers 26, 27 is limited. The rollers 22, 23 are from Towed tow, i. they run with more or less resistance empty. If necessary, you can be driven by a motor. You can also in one in a known manner with controllable force against each other be pressed.

In der Vorreckstrecke 4, in der der Streifenabschnitt schräg nach unten gefördert wird, wird das Filtertow 2 vorgereckt. Es kann dabei eine als steuerbare Trocknungsvorrichtung ausgebildete Konditioniereinrichtung passieren. Eine Trocknungsvorrichtung ist bspw. in EP 654 224 B1 ausführlich beschrieben. In the Vorreckstrecke 4, in which the strip section is conveyed obliquely down, the filter tow 2 pre-stretched. It can be a controllable drying device trained conditioning device happen. A drying device is, for example, in EP 654 224 B1 described in detail.

An das Walzenpaar 24 schließt sich die Reckstrecke 6 an, in der der Filtertowstreifen 2 senkrecht oder mit einer senkrechten Komponente von oben nach unten gefördert wird. Am Ende der Reckstrecke 6 befindet sich ein weiteres Walzenpaar 39 aus motorisch angetriebenen Walzen 41, 42, deren Umfangsgeschwindigkeiten etwas größer sind als die Umfangsgeschwindigkeiten der Walzen 26, 27, so daß das elastische Filtertow definiert gereckt wird. Die Walzenpaare 24 und 39 bilden somit die eigentliche Reckeinrichtung. Die Walzen 26 und 41 weisen eine starre, gerillte Oberfläche auf, die jeweils eine nachgiebige Oberfläche der Walzen 27 bzw. 42 berühren. Derartige Walzenkonfigurationen sind durch die vorerwähnten Filtertow-Aufbereitungsgeräte AF 1, AF 2 und AF 3 der Anmelderin bekannt und z.B. in der US-A-3 317 965 und US-A-3 255 506 beschrieben.At the pair of rollers 24, the stretching line 6 connects, in the filter tow 2 vertically or with a vertical component conveyed from top to bottom becomes. At the end of the stretch 6 is a another pair of rollers 39 from motor-driven Rolls 41, 42, the peripheral speeds something are larger than the peripheral speeds of the rollers 26, 27, so that defines the elastic filter tow is stretched. The roller pairs 24 and 39 thus form the actual stretching device. The rollers 26 and 41 have a rigid, grooved surface, each one compliant surface of the rollers 27 and 42 touch. Such roll configurations are by the aforementioned Filter Tertters AF 1, AF 2 and AF 3 of the Applicant known and e.g. in US-A-3,317,965 and US-A-3 255 506.

Dem Walzenpaar 39 ist ein weiteres Walzenpaar 43 nachgeordnet, deren Umfangsgeschwindigkeiten geringer sind als diejenigen der Walzen 41, 42, so daß das Filtertow 2 sich bei seiner Förderung leicht entspannt. Das Walzenpaar 43 weist wieder eine Walze 44 mit starrer, gerillter Oberfläche auf, die mit der nachgiebigen Oberfläche der Walzen 46 in Berührung steht. Die Walzenpaare 39 und 43 begrenzen somit die, im vorliegenden Fall annähernd horizontal angeordnete, Auftragsstrecke 7, in der eine Auftrageinrichtung in Form einer Besprühvorrichtung angeordnet ist. Die Besprühvorrichtung kann ausgebildet sein, wie in der US-A-4 313 974 beschrieben und besprüht den transportierten Filtertowstreifen 2 von einer oder beiden Seiten mit feinen Tröpfchen eines Lösungsmittels für das Filtertowmaterial z.B. Triazetin. Der Besprühvorrichtung vorgeordnet ist eine Ausbreiterdüse 18, so daß das gereckte Filtertow 2 ausgebreitet wird und das Lösungsmittel eine größere Oberfläche des Filtertowstreifens 2 benetzt. Diese Ausbreiterdüse 18 sowie die vor dem Walzenpaar 21 der Vorreckstrecke 4 vorgelagerte Ausbreiterdüse 17 werden mit Druckluft beaufschlagt auf die unten beschriebene Weise.The roller pair 39 is a further pair of rollers 43 downstream, whose peripheral speeds are lower than those of the rollers 41, 42, so that the filter tow 2 relaxes slightly during its promotion. The roller pair 43 again has a roller 44 with a rigid, grooved Surface on that with the yielding surface the rollers 46 is in contact. The roller pairs 39 and 43 thus limit that, in the present case approximately horizontally arranged, order line 7, in an applicator in the form of a spraying device is arranged. The spraying device can be formed as described in US-A-4,313,974 and sprayed the transported filter tow 2 of one or both sides with fine droplets of one Solvent for the filter tow material e.g. Triacetin. The spraying device is preceded by a spreader nozzle 18, so that the stretched filter tow 2 spread and the solvent has a larger surface area Wet filter tape 2. This spreader nozzle 18 and the front of the pair of rollers 21 of the pre-stretching 4 upstream spreading nozzle 17 are compressed air applied in the manner described below.

Der Auftragsstrecke 7 nachgeordnet ist eine Raffstrecke 8, in der der Filtertowstreifen 2 mit überwiegend senkrechter Komponente von einem Walzenpaar 51 mit motorisch angetriebenen Walzen 52, 53 von unten nach oben gefördert wird. Die Walze 52 hat wieder eine starre, gerillte Oberfläche, die Berührung der Walze eine nachgiebige Oberfläche.Downstream of the order section 7 is a Raffstrecke 8, in which the filter tow 2 with predominantly vertical Component of a pair of rollers 51 with motor driven rollers 52, 53 conveyed from bottom to top becomes. The roller 52 has again a rigid, grooved Surface, the touch of the roller a yielding Surface.

Dem Umlenkwalzenpaar 51 nachgeordnet ist eine Zufuhrstrecke 9, in der der Filtertowstreifen 2 von anhaftenden, für die weitere Bearbeitung nachteiligen elektrostatischen Ladungen befreit werden. In der Zufuhrstrecke 9 ist außerdem eine an sich bekannte sog. stopfdüsa vorhanden, die mit Druckluft von einer Druckluftquelle oder auf die unten ausgeführte erfindungsgemäße Weise beanfschlagt ist. Nach Durchlaufen der Stopfdüse wird das Filtertow einer Filterstrangmaschine 11 zugeführt.Downstream of the guide roller pair 51 is a supply path 9, in which the filter tow strip 2 of adhesive, for further processing adverse electrostatic Charges are freed. In the feeder range 9 is also a known so-called. Stopfdüsa present, with compressed air from a compressed air source or beanfschlagt in the manner of the invention carried out below. After passing through the Stopfdüse the filter tow is a Filter strand machine 11 supplied.

Bezüglich weiterer Einzelheiten wird ausdrücklich auf die US-A-5 590 449 verwiesen.For more details is expressly on US-A-5 590 449.

Innerhalb der Reckstrecke 6 ist der Filtertowstreifen durch einen zwischen den Walzenpaaren 24 und 39 zu beiden Seiten des Filtertowstreifens 2 erstreckenden Windkanal 32 hindurchgeführt, in welchem eine parallel zur Förderrichtung des Filtertowstreifens verlaufende Luftströmung erzeugt wird. Zum Erzeugen der Luftströmung ist der Windkanal 32 am Ende der Reckstrecke 6 mit einem mit der Saugseite eines Gebläses 38 verbundenen Saugluftanschluß 54 versehen. Am Eingang der Reckstrecke 6 ist der Windkanal 32 offen und bildet somit einen Lufteinlaß aus. Der Windkanal 32 ist durch Kanalwandungen 33, 34 begrenzt, die quer zur Breitseite des Filtertowstreifens einstellbar sind. In alternativen Ausführungen kann die Luft im Windkanal 32 im Bereich des Walzenpaares 39, und insbesondere im Bereich eines Einlaufspaltes des Walzenpaares 39 abgesaugt werden.Within the stretching section 6 is the filter tow by one between the roller pairs 24 and 39 too extending on both sides of the filter tow strip 2 Wind tunnel 32 passed, in which a parallel extending to the conveying direction of the filter tow band Air flow is generated. For generating the air flow is the wind tunnel 32 at the end of the stretch 6 with a with the suction side of a fan 38 connected suction air connection 54 provided. At the entrance of the stretch 6 the wind tunnel 32 is open and thus forms a Air intake off. The wind tunnel 32 is through duct walls 33, 34 limited, the transverse to the broad side of the Filter Tertz strip are adjustable. In alternative Designs can the air in the wind tunnel 32 in the area of the roller pair 39, and in particular in the region of Inlet gap of the pair of rollers 39 are sucked.

Der Windkanal 32 und die Wirkungsweise des Windkanals 32 entlang der Reckstrecke 6 ist ausführlich in DE 198 11 014 A1 beschrieben, worauf explizit verwiesen wird.The wind tunnel 32 and the operation of the wind tunnel 32nd along the stretch 6 is detailed in DE 198 11 014 A1, to which reference is explicitly made.

Der Windkanal 32 ist über den Saugluftanschluß 54 unter Zwischenschaltung einer Filtermatte 36 über die Verbindungsleitung 37 mit dem Gebläse 38 verbunden. Die Filtermatte 36 entfernt aus dem Saugluftstrom mitgerissene Partikel und Faserteilchen sowie Staub. Das Gebläse 38 ist darüber hinaus mit einer Regeleinheit 31 verbunden, die die Leistung des Verdichtergebläses 38 regelt.The wind tunnel 32 is below via the suction air connection 54 Interposition of a filter mat 36 via the connecting line 37 connected to the blower 38. The Filter mat 36 removes entrained from the suction air flow Particles and fiber particles as well as dust. The fan 38 is also connected to a control unit 31, which regulates the performance of the compressor fan 38.

Auf der Druckseite des Gebläses 38 ist über eine Leitung 48 eine Drosseleinheit 49 mit dem Gebläse 38 verbunden. Die Drosseleinheit 49 ist hinsichtlich der angeschlossenen Verbraucherkreise mittels einer mit ihr verbundenen Steuereinheit 47 einstellbar.On the pressure side of the blower 38 is via a line 48, a throttle unit 49 connected to the blower 38. The throttle unit 49 is connected with respect to the Consumer groups by means of a connected to it Control unit 47 adjustable.

Mit der Drosseleinheit 49 verbunden sind ausgangsseitig verschiedene Druckluftorgane, die mit Druckluft beaufschlagt werden. Bspw. werden von der Drosseleinheit 49 Ober eine Druckluftleitung 12 die Ausbreiterdüse 16 in der Abzugstrecke 3 mit Druckluft versorgt. Entsprechend werden die Ausbreiterdüsen 17 in der Vorreckstrecke 4 und die Ausbreiterdüse 18 in der Raffstrecke 8 über Verbindungen 13 und 14 jeweils mit Druckluft versorgt. Wenn ein zu großer Überdruck in der Druckluftleitung 48 durch den Verdichter 38 entsteht, kann über einen Auslaß 59 an der Drosseleinheit 49 Luft an die Atmosphäre, d.h. in die Umgebung der Vorrichtung abgelassen werden.Connected to the throttle unit 49 are the output side various compressed air devices that act on compressed air become. For example. are from the throttle unit 49th Above a compressed air line 12 the spreader nozzle 16 in the trigger line 3 supplied with compressed air. Corresponding become the spreader nozzles 17 in the Vorreckstrecke. 4 and the spreader nozzle 18 in the Raffstrecke 8 via Connections 13 and 14 each supplied with compressed air. If too much pressure in the compressed air line 48 produced by the compressor 38, can via an outlet 59 at the throttle unit 49 air to the atmosphere, i. be discharged into the environment of the device.

Selbstverständlich ist es im Rahmen der Erfindung möglich, auch andere Druckluftverbraucher z.B. Stopfdüse mit Druckluft zu versorgen, wobei Saugluft, die an einem oder mehreren Arbeitsorganen der Vorrichtung entsteht, hierzu verwendet wird. Erfindungsgemäß werden bereits vorhandene Absaugeinrichtungen bzw. Gebläse derart weitergebildet, daß die Rückführung der Saugluft als Blasluft an Druckluftorgane der Vorrichtung erfolgt. Außerdem kann die Regelung der Luftströme optimiert werden, wenn die Regeleinheit 31 des Gebläses 38 mit hier nicht dargestellten Meßeinrichtungen auf der Saugseite z.B. in dem Saugluftanschluß und weiteren Druckmeßeinrichtungen auf der Druckseite z.B. in den Ausbreiterdüsen 16, 17, 18 verbunden ist. In einer Alternative ist anstelle der Regeleinheit 31 eine Steuereinrichtung vorgesehen.Of course, it is within the scope of the invention possible, also other compressed air consumers e.g. Stopfdüse to supply with compressed air, whereby suction air, which at a or more work organs of the device arises, is used for this purpose. According to the invention already existing suction or blower such further developed that the return of the suction air as Blowing air to compressed air organs of the device takes place. In addition, the regulation of the air flows can be optimized when the control unit 31 of the blower 38 with Measuring devices not shown on the Suction side e.g. in the suction air connection and more Pressure measuring devices on the pressure side, e.g. in the Spreader nozzles 16, 17, 18 is connected. In a Alternative is instead of the control unit 31 a Control device provided.

In Fig. 2 ist im Querschnitt die Ausbreiterdüse aus Fig. 1 dargestellt. Die Ausbreiterdüse 16 verfügt über ein U-förmiges Gehäuse 71, das ein Scharniergelenk 73 an einem Schenkel des "U"s aufweist, an dem ein Deckel 72 angelenkt ist. Im geschlossenen Zustand, d.h. im Betrieb der Vorrichtung, ist ein Kanal 74 im Inneren der Ausbreiterdüse 16 ausgebildet. Durch den Kanal 74 wird in einer Ebene senkrecht zur dargestellten Ebene ein Filtertowstreifen transportiert. Die Ausbreiterdüse 16 ist eine flache, aufklappbare Düse, in der das Tow läuft.2, the spreader nozzle from FIG. 1 shown. The spreader nozzle 16 has a U-shaped Housing 71, a hinge joint 73 at a Leg of the "U" s, on which a lid 72 hinged is. In the closed state, i. in operation of the Device, is a channel 74 inside the Spreader nozzle 16 is formed. Through the channel 74 is in a plane perpendicular to the plane shown Transported filter tow. The spreader nozzle 16 is a flat, hinged nozzle in which the tow running.

Während der Filterproduktion muß die Düse 16 fest zugeklappt sein. Hierzu sind an dem Scharniergelenk 73 gegenüberliegenden Schenkel 69 des Gehäuses 71 Magnete 75 ausgebildet. Um einen guten Verschluß zu bilden, ist dem Magnet 75 des Gehäuses 71 ein Magnet 76 gegenübergestellt. Alternativ kann der Deckel 72 im Bereich des Magneten 75 magnetisch sein.During filter production, the nozzle 16 must be fixed be closed. For this purpose, at the hinge joint 73rd opposite legs 69 of the housing 71 magnets 75 trained. To make a good lock is the magnet 75 of the housing 71 is compared with a magnet 76. Alternatively, the lid 72 in the region of Magnet 75 be magnetic.

Um die Ausbreiterdüse 16 während des Betriebs geschlossen zu halten, sind die einander gegenüberliegenden Magnete 75 und 76 von verschiedener Polarität, so daß der Deckel 72 an dem Gehäuse 71 gehalten wird.Closed around the spreader nozzle 16 during operation to hold, are the opposite Magnets 75 and 76 of different polarity, so that the lid 72 is held on the housing 71.

Um die Vorrichtung betriebsbereit zu machen, muß die Düse 16 aufgeklappt werden, um das Filtertow einzulegen. Anschließend wird die Düse 16 wieder geschlossen.To make the device operational, the Nozzle 16 can be opened to insert the filter tow. Subsequently, the nozzle 16 is closed again.

Die Stärke der Magnete 75 und 76 ist so gewählt, daß ein Öffnen während des Betriebs der, Maschine bzw. der Vorrichtung nicht möglich ist. Um das Öffnen der Düse bzw. des Deckels 72 zu erleichtern, ist am Deckel 72 ein Griff 77 vorgesehen, der um einen Drehpunkt 78 drehbar gelagert ist und einen Hebelarm 79 aufweist, der beim Öffnen des Deckels 72 den Schenkel 69 des Gehäuses 71 berührt.The strength of the magnets 75 and 76 is chosen so that a Open during operation of the machine or the Device is not possible. To open the nozzle or the lid 72 is on the lid 72 a Handle 77 is provided, which is rotatable about a pivot point 78 is mounted and has a lever arm 79, the at Opening the lid 72, the leg 69 of the housing 71st touched.

Aufgrund von geeigneten Hebelverhältnissen von Griff 77 und Hebelarm 79 kann mit einer geringen Kraft der Abstand zwischen den Magneten 75 und 76 vergrößert werden, wodurch auch die magnetischen Kräfte herabgesetzt werden. Der Griff 77 ist als Hebel ausgeführt, so daß das Trennen der Magneten 75, 76 zusätzlich mechanisch unterstützt wird. Dadurch wird wesentlich weniger Kraft zum Öffnen des Deckels 72 benötigt, ohne die Zuhaltefunktion der Düse 16 zu beeinträchtigen. Due to suitable lever ratios of handle 77 and lever arm 79 can with a small force of Distance between the magnets 75 and 76 increased which also reduces the magnetic forces become. The handle 77 is designed as a lever, so that the separation of the magnets 75, 76 in addition mechanically is supported. This will be much less Force needed to open the lid 72 without the Locking function of the nozzle 16 to affect.

Außerdem ist es günstig, wenn der Abstand des Drehpunkts 78 vom Scharniergelenk 73 größer ist als der Abstand zwischen den Magneten 76 und dem Scharniergelenk 73. Hierdurch entstehen bessere Hebelverhältnisse, so daß durch diese Maßnahme weniger Kraft zum Öffnen der Düse 16 erforderlich ist.Besides, it is convenient if the distance of the pivot point 78 from the hinge joint 73 is greater than the distance between the magnets 76 and the hinge joint 73rd This results in better leverage, so that less force to open the nozzle by this measure 16 is required.

Durch den Hebelgriff 77, den Drehpunkt 78 und den Hebelarm 79 sind mechanische Mittel vorhanden, die das Öffnen der Ausbreiterdüse 16 und das Einlegen eines Filtertowstreifens erleichtern. By the lever handle 77, the pivot point 78 and the Lever arm 79 mechanical means are present, the Opening the spreader nozzle 16 and inserting a Lighten filter towband.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

22
Streifenstrip
33
Abzugsstreckeextraction path
44
Vorreckstreckepre-stretching
66
Reckstreckestretching section
77
Auftragsstreckecoating section
88th
Raffstreckegathering section
99
Zufuhrstreckesupply route
1111
FilterstrangmaschineFilter rod machine
1212
Versorgungsleitungsupply line
1313
Versorgungsleitungsupply line
1414
Versorgungsleitungsupply line
1616
Ausbreiterdüsespreading nozzle
1717
Ausbreiterdüsespreading nozzle
1818
Ausbreiterdüsespreading nozzle
1919
Umlenkrolleidler pulley
2121
Walzenpaarroller pair
2222
Walzenroll
2323
Walzeroller
2424
Walzenpaarroller pair
2626
Walzeroller
2727
Walzeroller
3131
Regeleinheitcontrol unit
3232
Windkanalwind Tunnel
3333
Wandwall
3434
Wandwall
3636
Filtermattefilter mat
3737
Leitungmanagement
3838
Verdichtercompressor
3939
Walzenpaarroller pair
4141
Walzeroller
4242
Walzeroller
4343
Walzenpaarroller pair
4444
Walze roller
4646
Walzeroller
4747
Steuereinheitcontrol unit
4848
Leitungmanagement
4949
Drosseleinheitrestrictor
5151
Walzenpaarroller pair
5252
Walzeroller
5353
Walzeroller
5454
Saugluftanschlußsuction air
5959
Auslaßoutlet
6969
Schenkelleg
7171
Gehäusecasing
7272
Deckelcover
7373
Scharniergelenkhinge
7474
Kanalchannel
7575
Magnetmagnet
7676
Magnetmagnet
7777
GriffHandle
7878
Drehpunktpivot point
7979
Hebelarmlever arm

Claims (17)

  1. Device for treating at least one strip (2) of filter material for the tobacco-processing industry, in particular filter tow strips, along a conveyor path (3, 4, 6, 7, 8, 9), and comprising at least one compressed-air element (16, 17, 18), in particular for the strip (2), characterised in that at least one scavenging device (38) is provided that is arranged on the suction side on the conveyor path (3, 4, 6, 7, 8, 9) of the strip and is connected on the pressure side to the compressed air element (16, 17, 18).
  2. Device according to claim 1, characterised in that the scavenging device (38) includes, at least on the suction side, at least one filtering device (36) and/or cleaning device.
  3. Device according to claim 1 or 2, characterised in that the scavenging device (38) includes, at least on the pressure side, at least one, preferably controllable, throttling device (49).
  4. Device according to one or more of claims 1 to 3, characterised in that a regulating device (31) and/or control device is provided for the scavenging device (38).
  5. Device according to claim 4, characterised in that at least one pressure measuring device is connected on the suction and/or pressure side to the regulating device (31) and/or control device.
  6. Device according to claim 4 or 5, characterised in that the regulating device (31) and/or control device is formed by a machine control centre, in particular a store-programmable control (SPC).
  7. Device according to one or more of claims 1 to 4, characterised in that the suction side of the scavenging device (38) is arranged in a stretching zone of a stretching portion (6) of the conveyor path (3, 4, 6, 7, 8, 9).
  8. Device according to one or more of claims 1 to 4, characterised in that the suction side of the scavenging device (38) is arranged at the end of a stretching section of the conveyor path (3, 4, 6, 7, 8, 9), in particular a stretching portion (6) and/or application portion (7) and/or gathering portion (8).
  9. Method for treating at least one strip (2) of filter material for the tobacco-processing industry, in particular filter tow strips, along a conveyor path (3, 4, 6, 7, 8, 9) and by means of at least one compressed air element (16, 17, 18), in particular for the strip (2), characterised in that air is scavenged on the conveyor path (3, 4, 6, 7, 8, 9) and is supplied to the compressed air element (16, 17, 18).
  10. Method according to claim 9, characterised in that the scavenged air is filtered and/or cleaned.
  11. Method according to claim 9 or 10, characterised in that the air is throttled on the pressure side, preferably by means of an, in particular controllable, throttling device (49).
  12. Method according to one or more of claims 9 to 11, characterised in that the flow of air is regulated and/or controlled.
  13. Method according to claim 12, characterised in that the air flow is regulated and/or controlled as a function of the air pressure on the suction side and/or the pressure side.
  14. Method according to claim 12 or 13, characterised in that the air flow is regulated and/or controlled by means of a machine control centre, in particular a store-programmable control (SPC).
  15. Method according to one or more of claims 9 to 14, characterised in that, in particular surplus air on the pressure side is discharged to the atmosphere.
  16. Method according to one or more of claims 9 to 15, characterised in that the air is scavenged at the end of a stretching zone of a stretching portion (6) of the conveyor path (3, 4, 6, 7, 8, 9).
  17. Method according to one or more of claims 9 to 15, characterised in that the air is scavenged at the end of a stretching section of the conveyor path (3, 4, 6, 7, 8, 9), in particular a stretching portion (6) and/or application portion (7) and/or gathering portion (8).
EP02027381A 2002-01-07 2002-12-09 Apparatus and method for treating a strip of filter material in the tobacco industry Expired - Lifetime EP1325685B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10200326 2002-01-07
DE10200326A DE10200326A1 (en) 2002-01-07 2002-01-07 Device and method for preparing at least one strip of filter material for the tobacco processing industry

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EP1325685A2 EP1325685A2 (en) 2003-07-09
EP1325685A3 EP1325685A3 (en) 2004-05-12
EP1325685B1 true EP1325685B1 (en) 2005-06-08

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EP (1) EP1325685B1 (en)
AT (1) ATE297139T1 (en)
DE (2) DE10200326A1 (en)
PL (1) PL204896B1 (en)

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DE2814605A1 (en) 1978-04-05 1979-10-18 Hauni Werke Koerber & Co Kg METHOD AND DEVICE FOR SPREADING A MOVING AIR-PERMEABLE WEB OF FABRIC
DE2814681A1 (en) 1978-04-05 1979-10-18 Hauni Werke Koerber & Co Kg METHOD AND DEVICE FOR APPLYING PLASTICIZER TO A MOVING FABRIC
US4747814A (en) * 1986-07-23 1988-05-31 American Filtrona Corporation Fiber separator
GB9200904D0 (en) * 1992-01-16 1992-03-11 Molins Plc Cigarette filter manufacture
IT1272020B (en) * 1992-03-26 1997-06-10 Koerber Ag PROCEDURE AND MACHINE FOR TREATING MATERIAL FOR A FILTER CORD.
DE4345569B4 (en) 1993-11-24 2006-06-08 Hauni Maschinenbau Ag Arrangement for processing a strip of filter material
DE19811014A1 (en) * 1998-03-13 1999-09-16 Hauni Maschinenbau Ag Method and device for producing filter rods for rod-shaped articles in the tobacco processing industry

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DE10200326A1 (en) 2003-07-17
ATE297139T1 (en) 2005-06-15
DE50203329D1 (en) 2005-07-14
PL204896B1 (en) 2010-02-26
EP1325685A2 (en) 2003-07-09
PL358113A1 (en) 2003-07-14
EP1325685A3 (en) 2004-05-12

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