DE102018117997B4 - Machine of the tobacco processing industry for loading a strand machine and method for operating such a machine - Google Patents

Abstract

The invention relates to a machine (2) in the tobacco processing industry for feeding a strand machine, which comprises a shredding device (8), a first and a second suction strand conveyor (10, 12). The comminution device (8) comprises two interacting rollers (81, 82), which form a pair of rollers rotating in opposite directions, flat foil material (6) being able to be fed to the pair of rollers and comminuted foil material being dispensable. The first suction strand conveyor (10) comprises a first suction belt (18) with a first transport side (34), the second suction strand conveyor (12) comprises a second suction belt (20) with a second transport side (36). The first suction line conveyor (10) and the shredding device (8) are arranged relative to one another in such a way that shredded film material can be transferred from the discharge zone (28) to the first transport side (34). The first and second suction strand conveyors (10, 12) are arranged with respect to one another such that the first transport side (34) faces the second transport side (36) and the shredded film material can be transferred from the first suction belt (18) to the second suction belt (20) is.

Description

The invention relates to a machine in the tobacco processing industry for feeding a strand machine. The invention further relates to a method for operating a machine in the tobacco processing industry for feeding a strand machine.

A distributor device is arranged upstream of the rod machine in the production of cigarettes. This serves to meter the tobacco stream supplied in an air stream, to sift it and to form one or more tobacco strands from the tobacco material sighted. The tobacco rod or tobacco rods is / are fed to the downstream rod machine.

From the DE 1 954 036 A1 shows an apparatus for manufacturing a cigarette-like product. An endless band of tobacco leaf material is fed to the device known from this document via a feed device. This is cut into several endless tobacco strips by a tobacco strip cutting machine. The tobacco strips are pushed together in a transport device perpendicular to the transport direction. A uniform strand is formed, which is then wrapped.

DE 10 2015 001 618 A1 discloses a method and an apparatus for producing rod-shaped articles of the food and beverage industry, in particular the tobacco processing industry, from a film web. The film web is drawn off from a film supply and cut into film sections which are subsequently wound and / or rolled into rod-shaped articles.

It is an object of the invention to provide an improved machine for the tobacco processing industry for feeding a strand machine and an improved method for operating such a machine.

• - die Zerkleinerungsvorrichtung zwei miteinander in Wechselwirkung stehende Walzen umfasst, die ein gegenläufig rotierendes Walzenpaar bilden, auf dessen stromaufwärts gelegener Seite eine Zufuhrzone vorhanden ist, über die dem Walzenpaar flaches Folienmaterial zuführbar ist, und auf dessen stromabwärts gelegener Seite eine Ausgabezone vorhanden ist, über die von dem Walzenpaar zerkleinertes Folienmaterial ausgebbar ist,
• - der erste Saugstrangförderer ein erstes Saugband mit einer ersten Transportseite und der zweite Saugstrangförderer ein zweites Saugband mit einer zweiten Transportseite umfasst,
• - die erste und die zweite Transportseite zum Transport des zerkleinerten Folienmaterials eingerichtet sind,
• - der erste Saugstrangförderer und die Zerkleinerungsvorrichtung derart zueinander angeordnet sind, dass zerkleinertes Folienmaterial von der Ausgabezone auf die erste Transportseite übergebbar ist und der erste und der zweite Saugstrangförderer derart zueinander angeordnet sind, dass die erste Transportseite der zweiten Transportseite zugewandt ist und das zerkleinerte Folienmaterial von dem ersten Saugband an das zweite Saugband übergebbar ist,
• - die Maschine ferner eine Steuereinheit umfasst, die dazu eingerichtet ist, einen von der Zerkleinerungsvorrichtung über die Ausgabezone abgegebenen ersten Fluss an zerkleinertem Folienmaterial und einen von dem ersten Saugstrangförderer geförderten zweiten Fluss an zerkleinertem Folienmaterial derart zu steuern oder zu regeln, dass der erste und der zweite Fluss um weniger als einen vorgebbaren Differenzgrenzwert voneinander abweichen.

The object is achieved by a machine of the tobacco processing industry for feeding a strand machine, this machine being further developed in that the machine comprises a size reduction device, a first and a second suction strand conveyor arranged in succession in a material flow direction, wherein

• - The comminution device comprises two mutually interacting rollers which form a counter-rotating pair of rollers, on the upstream side of which there is a feed zone, via which flat foil material can be fed to the pair of rollers, and on whose downstream side there is an output zone, via which film material shredded by the pair of rollers can be dispensed,
• the first suction train conveyor comprises a first suction belt with a first transport side and the second suction train conveyor comprises a second suction belt with a second transport side,
• the first and second transport sides are set up for transporting the shredded film material,
• - The first suction strand conveyor and the shredding device are arranged in relation to one another in such a way that shredded film material can be transferred from the discharge zone to the first transport side and the first and the second suction strand conveyor are arranged in relation to one another such that the first transport side faces the second transport side and the shredded film material from the first suction belt can be transferred to the second suction belt,
• - The machine further comprises a control unit which is set up to control or regulate a first flow of shredded film material discharged by the shredding device via the discharge zone and a second flow of shredded film material conveyed by the first suction line conveyor in such a way that the first and the second flow differ from one another by less than a predeterminable differential limit.

The film material is, for example, flat, reconstituted tobacco material, flat PLA film or another flat plastic material.

The machine of the tobacco processing industry could be significantly simplified in construction compared to conventional machines, such as those used to form a tobacco rod from tobacco material. The shredded film material can advantageously be placed directly on the first suction line conveyor. The material flow shaped in this way can be fed directly to the extrusion machine after transfer to the second suction line conveyor. Compared to conventional machines, the preparation of the tobacco in the primary and the transport of the cut tobacco to the machine are advantageously eliminated. In addition, unlike conventional tobacco processing, no distributor is required or used to feed the strand machine. There is no longer any material discharge, such as a rib discharge on a classifier. There is also no pneumatic feeding of the distributor. This is particularly advantageous since the lock, the classifier and the dosing unit, such as a cellular wheel lock, which are otherwise necessary can also be dispensed with.

The physical and aromatic properties of reconstituted tobacco material are very constant and therefore easy to control. If reconstituted tobacco material is used as the film material, the efficiency in the production of rod-shaped articles in the tobacco processing industry, for example cigarettes or HNB articles, is very high and the reject rate is very low. Finally, the reconstituted tobacco material processed in the machine has a very high density, which is why the transport and storage costs are correspondingly low.

The machine of the tobacco processing industry is particularly well suited for loading a strand machine that is set up for the production of HNB articles (for English: Heat-Not-Burn articles).

The control unit is set up to control or regulate the first and the second flow in such a way that their values differ from one another by less than a predeterminable limit value. These two values therefore only deviate from one another by process-related and unavoidable fluctuations and are the same in this sense. The first and second flow are two quantities, which can be both a mass flow and a volume flow.

For example, the conveying mass of the first suction line conveyor and the mass throughput of the comminution device are coordinated with one another in such a way that the two values differ from one another only by process-related and unavoidable fluctuations and are the same in this sense.

Mass synchronization (or volume synchronization) is advantageously achieved between the comminution device and the first suction line conveyor. So there is no jamming of the material after the shredding device, which would occur if the conveying flow is too low or the conveying mass of the first suction strand conveyor is too low, and there is no breakdown of the material flow, which is due to too high a conveying flow or too high a conveying mass of the first suction train conveyor would happen.

The size reduction device, the first and the second suction line conveyor are arranged relative to one another such that the first suction line conveyor is arranged downstream of the size reduction device, in particular downstream of the output zone of the size reduction device, based on the material flow. In particular, the first suction line conveyor is arranged immediately downstream of the discharge zone of the shredding device, which means that there are no further internals, devices or units between these two units which carry out processing steps on the shredded film material. For example, a funnel or the like through which the shredded film material slides onto the suction belt should not be understood in this sense as a unit that carries out processing steps on the shredded film material. The second suction strand conveyor is arranged downstream of the first suction strand conveyor. The first suction train conveyor can also be arranged immediately downstream of the second suction train conveyor.

It is also particularly provided that the shredded film material is trimmed when it is conveyed on the second suction line conveyor. Such trimming is therefore optionally provided.

According to an advantageous embodiment, it is provided that the first suction line conveyor is arranged below the discharge zone. In other words, the first suction line conveyor is arranged geodetically lower than the output zone. Material that leaves the shredding device via the discharge zone arrives at the first suction line conveyor under the force of gravity. In this context, it is provided in particular that the first suction line conveyor is arranged directly below the output zone in the direction of gravity. With such an arrangement, the material leaving the discharge zone falls directly onto the transport side of the first suction belt of the first suction strand conveyor. The first transport side of the first suction line conveyor faces the output zone. In particular, it is provided that the first transport side is oriented at least approximately horizontally.

According to further embodiments, it is also provided that the first suction line conveyor is not arranged directly below the comminution device but laterally of the discharge zone. In this case too, however, it is located at a geodetically lower position, so that the shredded foil material travels along an arcuate path through the discharge zone to the laterally arranged first suction line conveyor.

According to a further advantageous embodiment, the machine is further developed in that a compressed air unit for providing a compressed air flow to a compressed air nozzle is provided, which is arranged in such a way that a compressed air flow emerging from the compressed air nozzle accelerates the shredded film material leaving the discharge zone in a first transport direction of the first suction line conveyor .

The compressed air unit used accelerates the material flow of shredded film material leaving the discharge zone in the direction of the conveying direction of the first suction line conveyor. By accelerating the material flow before it interacts with the suction belt conveyor, the acceleration of the film material in the material flow is less when it comes into contact with the suction belt. This protects the film material and therefore exposes it to less mechanical stress. The material flow is advantageously prevented from being torn off, but at least the material flow is much less likely to be torn off.

According to a further advantageous embodiment, the machine is further developed in that the rollers of the pair of rollers of the comminution device each comprise a plurality of disk knives arranged in parallel to one another or are designed as cutting rollers, the pair of rollers being set up to feed the flat foil material into a plurality of parallel foil strips shred, which reach the first suction belt of the first suction strand conveyor via the discharge zone.

In this context, it is provided in particular that the pair of rollers comprises a first roller which is rotatable about a first axis of rotation and a second roller which is rotatable about a second axis of rotation, the first and the second axis of rotation defining a first plane which encloses an angle greater than 0 ° and less than or equal to 90 ° with a longitudinal direction of the first suction belt oriented in a material flow direction.

The longitudinal direction lies in the surface of the transport side of the first suction belt. The surface of the transport side of the first suction belt is in particular not arranged parallel to the plane in which the two axes of rotation extend. At the same time, the plane intersects the transport side along a line that is perpendicular to the transport direction. The plane defined by the two axes of rotation is thus inclined in only one direction.

Due to the inclined arrangement of the pair of rollers, the film strips provided by the comminution device have a speed component which points in the direction of the transport direction of the first suction train conveyor. When the film strips come into contact with the suction train conveyor, less acceleration is required than would be the case if the film strips hit the surface of the suction train conveyor perpendicularly. The consequence of this is that the cut film strips are treated much more gently, that is, they are exposed to a lower mechanical load.

According to a further advantageous embodiment, it is provided that the control unit is also set up to control or regulate a conveying speed of the first suction line conveyor and a cutting speed with which the parallel film strips leave the comminution device in such a way that the conveying speed and the cutting speed are reduced by less than deviate from each other by a second predeterminable limit value.

The cutting speed of the comminution device and the conveying speed of the first suction line conveyor are advantageously matched to one another. The speeds are the same except for process-related and unavoidable fluctuations. This synchronism of speeds ensures that the material behind the shredding device does not jam, which would be the case if the first suction train conveyor was too slow, nor are the film strips exposed to unnecessary tensile loads and the material flow is torn off, which is the case when the first suction train conveyor is too fast would be the case.

According to a further advantageous embodiment, it is provided that the shredding device comprises a pair of longitudinal and cross-cutting rollers and is set up to shred the flat film material into a large number of individual small film parts which reach the first suction line conveyor via the discharge zone.

A pair of longitudinal and cross cutting rollers is set up to cut the film material both in the longitudinal direction (ie essentially parallel to the transport direction) and in the transverse direction. As a result, isolated small film parts are made available. A longitudinal and cross-cutting roller pair is often referred to as a cross-cut cutting roller pair due to the cross-cutting directions.

If the shredding device, as provided in accordance with the aforementioned embodiment, is set up to produce small film parts, a process decoupling takes place between the shredding and the subsequent conveying of the small film material parts. There is no longer any need to synchronize the speed of the comminution device and the first suction train conveyor. Nevertheless, there should be at least approximately mass and / or volume synchronization, so that the film material does not jam after the shredding device and a strand with constant density can be provided.

According to a further embodiment, it is provided that the comminution device is a punching device, for example a roll punch, which comprises a punching roll and a counter roll interacting with it. It is also provided, for example, that the punch roll and the counter roll cooperate along a punch line which is also in the plane of the two previously mentioned axes of rotation of the pair of rolls. Strictly speaking, according to such an exemplary embodiment, it is no longer a pair of rollers, but rather a punching device comprising a roller punch and a counter roller. Exceptionally, such a punching device should also be understood as a pair of rollers in the context of the present description.

The machine of the tobacco processing industry for loading a strand machine is furthermore particularly set up to feed the strand machine exclusively with the shredded foil material produced from the foil material. In particular, the second suction strand conveyor of the machine is already a suction strand conveyor of the strand machine.

It is furthermore particularly provided that the machine comprises a storage for the flat film material, which is furthermore rolled up in particular on a reel. A bobbin changing device is provided as the storage device, for example, which is furthermore particularly designed to connect a running end of flat film material rolled up on a first bobbin to a beginning of flat film material rolled up on a second bobbin, so that flat film material can be fed continuously to the comminution device.

• - die Zerkleinerungsvorrichtung zwei miteinander in Wechselwirkung stehende Walzen umfasst, die ein gegenläufig rotierendes Walzenpaar bilden, auf dessen stromaufwärts gelegener Seite eine Zufuhrzone vorhanden ist, über die dem Walzenpaar flaches Folienmaterial zugeführt wird, und auf dessen stromabwärts gelegener Seite eine Ausgabezone vorhanden ist, über die von dem Walzenpaar zerkleinertes Folienmaterial ausgegeben wird,
• - der erste Saugstrangförderer ein erstes Saugband mit einer ersten Transportseite und der zweite Saugstrangförderer ein zweites Saugband mit einer zweiten Transportseite umfasst,
• - auf der ersten und der zweiten Transportseite zerkleinertes Folienmaterial transportiert wird,
• - der erste Saugstrangförderer und die Zerkleinerungsvorrichtung derart zueinander angeordnet sind, dass zerkleinertes Folienmaterial von der Ausgabezone auf die erste Transportseite übergeben wird und der erste und der zweite Saugstrangförderer derart zueinander angeordnet sind, dass die erste Transportseite der zweiten Transportseite zugewandt ist und das zerkleinerte Folienmaterial von dem ersten Saugband an das zweite Saugband übergeben wird,
• - die Maschine ferner eine Steuereinheit umfasst, die einen von der Zerkleinerungsvorrichtung über die Ausgabezone abgegebenen ersten Fluss an zerkleinertem Folienmaterial und einen von dem ersten Saugstrangförderer geförderten zweiten Fluss an zerkleinertem Folienmaterial derart steuert oder regelt, dass der erste und der zweite Fluss um weniger als einen vorgebbaren Differenzgrenzwert voneinander abweichen.

The object is further achieved by a method for operating a machine in the tobacco processing industry for feeding a strand machine, the method being further developed in that the machine comprises a shredding device, a first and a second suction line conveyor arranged in succession in a material flow direction, wherein

• - The comminution device comprises two mutually interacting rollers which form a counter-rotating pair of rollers, on the upstream side of which there is a feed zone, via which flat film material is fed to the pair of rollers, and on whose downstream side there is an output zone, via which output of shredded film material from the pair of rollers,
• the first suction train conveyor comprises a first suction belt with a first transport side and the second suction train conveyor comprises a second suction belt with a second transport side,
• - shredded film material is transported on the first and second transport sides,
• - The first suction strand conveyor and the shredding device are arranged in relation to one another in such a way that shredded film material is transferred from the discharge zone to the first transport side and the first and the second suction strand conveyor are arranged in relation to one another such that the first transport side faces the second transport side and the shredded film material from the first suction belt is handed over to the second suction belt,
• the machine further comprises a control unit which controls or regulates a first flow of shredded film material discharged from the shredding device via the discharge zone and a second flow of shredded film material conveyed by the first suction line conveyor in such a way that the first and second flows by less than one predeterminable difference limit differ.

The same or similar advantages apply to the process as have already been mentioned with regard to the machine of the tobacco processing industry itself, so that repetitions are to be avoided.

The film strips are output in a direction that lies with the material flow direction on the first suction belt in a further plane that is perpendicular to the transport side of the first suction belt.

The method is further developed in particular in that the machine comprises a compressed air unit for providing a compressed air flow to a compressed air nozzle, which is arranged in such a way that a compressed air flow emerging from the compressed air nozzle accelerates the shredded film material leaving the discharge zone in a first transport direction of the first suction line conveyor.

In particular, it is provided that the pair of rollers of the shredding device each comprise a plurality of disc knives arranged parallel to one another or are designed as cutting rollers with which the flat foil material is separated into a plurality of parallel foil strips, and the foil strips reach the first suction strand conveyor via the discharge zone.

According to a further advantageous embodiment, the method is further developed in that the film strips from the Comminution device are output in a direction that includes an angle of less than 90 ° and greater than or equal to 0 ° with a material flow direction that the film strips occupy on the first suction belt.

According to a further advantageous embodiment, it is provided that the control unit controls or regulates a conveying speed of the first suction strand conveyor and a speed at which the parallel film strips leave the comminution device in such a way that the conveying speed and the cutting speed differ from one another by less than a second predeterminable differential limit.

In addition, it is particularly provided that the shredding device comprises a pair of longitudinal and cross cutting rollers and divides the flat film material into a large number of individual small film parts which reach the first suction line conveyor via the output zone.

Further features of the invention will become apparent from the description of embodiments according to the invention together with the claims and the accompanying drawings. Embodiments according to the invention can fulfill individual features or a combination of several features.

• 1 eine Maschine der Tabak verarbeitenden Industrie zum Beschicken einer Strangmaschine in schematisch vereinfachter perspektivischer Darstellung,
• 2 die aus 1 bekannte Maschine, wobei Teile der Verkleidung nicht dargestellt sind,
• 3 eine schematisch vereinfachte Detailansicht der aus 1 bekannten Maschine, wobei ein Walzenpaar gezeigt ist, mit dem flaches Folienmaterial zu Folienstreifen geschnitten wird,
• 4 eine weitere schematisch vereinfachte perspektivische Darstellung eines Details der aus 1 bekannten Maschine der Tabak verarbeitenden Industrie im Bereich des Walzenpaars und des ersten Saugstrangförderers und
• 5 die aus 4 bekannte Darstellung, wobei, um die einzelnen Saugbänder der Saugstrangförderer leicht erkennen zu können, Teile des ersten und zweiten Saugstrangförderers nicht dargestellt sind.

The invention is described below without restricting the general inventive concept on the basis of exemplary embodiments with reference to the drawings, reference being expressly made to the drawings with regard to all details according to the invention not explained in detail in the text. Show it:

• 1 a machine of the tobacco processing industry for loading a strand machine in a schematically simplified perspective view,
• 2nd from 1 known machine, parts of the covering are not shown,
• 3rd a schematically simplified detailed view of the from 1 known machine, a pair of rollers is shown, with which flat film material is cut into film strips,
• 4th a further schematically simplified perspective view of a detail of the from 1 known machine of the tobacco processing industry in the area of the roller pair and the first suction line conveyor and
• 5 from 4th Known representation, parts of the first and second suction strand conveyor not being shown, in order to be able to easily recognize the individual suction belts of the suction strand conveyor.

In the drawings, the same or similar elements and / or parts are provided with the same reference numbers, so that a renewed presentation is not given.

1 shows a schematically simplified perspective view of a machine 2nd the tobacco processing industry, which is set up to feed a rod machine, not shown. The machine 2nd is about tensioners 41 , 42 , 43 flat film material in a material flow direction 6 fed. The machine comprises successively in the material flow direction 2nd a shredder 8th , a first suction line conveyor 10th and a second suction train conveyor 12th .

The shredder 8th comprises a first roller 81 and a second roller 82 which form a pair of rollers rotating in opposite directions. The first roller 81 is about a first axis of rotation R1 and the second roller 82 is about a second axis of rotation R2 rotatable. The directions of rotation of the two rollers 81 , 82 are opposed to each other so that there is a feed zone on the upstream side of the roller pair 24th is available, over which the pair of rollers the flat film material 6 is fed. An output zone is located on the downstream side of the pair of rollers 28 , via which the shredded sheet material is output by the pair of rollers. The shredded film material comes from the shredding device 8th directly on the first suction line conveyor 10th . The first thing that fails is a collecting funnel 14 who is above a in 1 invisible first suction tape 18th of the first suction line conveyor 10th is arranged. The shredded film material is from the first suction line conveyor 10th to the second suction line conveyor 12th passed, the second suction train conveyor 12th can already be part of the strand machine.

The machine 2nd the tobacco processing industry also includes a control unit 16 , which is set up the crushing device 8th and at least the first suction train 10th to control or regulate that one over the output zone 28 dispensed first flow of shredded film material from the shredder 8th is discharged, and one from the first suction line conveyor 10th promoted second flow of shredded film material deviate from each other by less than a predetermined difference value. The first and second flows can be volume flows and / or mass flows. In other words, it is the control unit 16 set up the crusher 8th and the first suction line conveyor 10th to be controlled in such a way that mass synchronization and / or volume synchronization can be implemented between these two units. The control unit 16 is also set up, in particular, also a volume and / or mass synchronization between the first suction line conveyor 10th and the second suction train conveyor 12th to manufacture. The ability of the control unit 16 who have favourited Crushing Device 8th , the first suction line conveyor 10th and possibly also the second suction line conveyor 12th control is in 1 represented schematically and simplified with arrows.

2nd shows that out 1 well-known machine 2nd the tobacco processing industry, the housing of the first and second suction line conveyor 10th and 12th are not shown. The first suction line conveyor 10th comprises a first suction belt 18th , which has different deflection and tensioning rollers within the first suction line conveyor, which are not provided with reference numerals 10th is led. The second suction line conveyor 12th includes a second suction belt 20th , which is also guided over different deflection and tensioning rollers, which are not provided with reference numerals.

3rd shows a schematically simplified detail view of the pair of rollers, which the crushing device 8th forms. Examples include the first roller 81 and also the second roller 82 in each case a plurality of disc knives arranged parallel to one another 22 that are along the first or second axis of rotation R1 , R2 are arranged one behind the other and each parallel to each other. Alternatively, the first roller 81 and also the second roller 82 also be designed as cutting rollers. Every elevation of a cutting roller or every disc knife 22 is perpendicular to the first or second axis of rotation R1 , R2 . There is a disc knife 22 the first roller 81 with a disc knife 22 the second roller 82 interacting. That to the shredder 8th over the feed zone 24th supplied film material 6 comes in a variety of parallel film strips 26 separated or cut and crushed in this sense. The parallel film strips 26 leave the shredder 8th over the output zone 28 . The feed zone 24th is an area which, starting from the pair of rollers upstream over the entire width of the pair of rollers, is a short distance from the rollers 81 , 82 extends. The feed zone is upstream 24th small. It is only intended to denote that area in which the flat film material of the comminution device 8th is fed. Their expansion in this direction is, for example, only a few centimeters or only a few millimeters. The output zone extends accordingly 28 on the opposite side of the pair of rollers, i.e. downstream, also in an area that is directly connected to the first and second rollers 81 , 82 adjacent. The output zone 28 extends across the entire width of the pair of rollers. The size of the output zone is in the direction of the material flow 28 as well as the extension of the feed zone 24th contrary to the direction of the material flow, it is very small and is, for example, only a few centimeters or millimeters. The output zone 28 should denote that area over which the shredded film material the shredding device 8th immediately leaves.

From the multitude of film strips 26 is on the first suction line conveyor 10th , more precisely on its first suction belt 18th which in 3rd is not shown, a strand 30th made of foil material 6 shaped. It is provided according to one embodiment that this strand 30th in cross section, i.e. perpendicular to the material flow direction M which, at this point, the conveying direction of the first suction line conveyor 10th corresponds, is rectangular, furthermore, for example, square. The material flow direction M is in 3rd exemplarily and schematically represented in some places with arrows. Downstream of the shredder 8th follows the material flow direction M essentially the longitudinal direction of the film strips 26 .

According to a further exemplary embodiment, it is provided that the pair of rollers of the comminution device 8th is a longitudinal and cross cutting roller pair. The flat foil material 6 is in such an embodiment not shredded into strips of film but into a large number of isolated small parts. The small film parts leave the shredding device 8th over the output zone 28 and get to the first suction line conveyor 10th .

4th shows a further schematically simplified perspective view of a detail of the machine 2nd the tobacco manufacturing industry, being in addition to the representation in 3rd sections of the first and second suction train conveyor 10th , 12th are shown. The shredded film material in the form of the film strips 26 reaches the first suction belt 18th , a lateral guidance of the shredded film material with the help of the guide jaws 32 is provided.

5 shows that out 4th known representation, the guide jaws 32 and other components are not shown to run the first and second suction belt 18th , 20th to be able to recognize.

The shredded film material reaches a first transport side from above 34 of the first suction belt 18th . On the first transport page 34 becomes the strand 30th shaped and then to the second suction line conveyor 12th to hand over. There is a transfer to the second suction belt 20th , on its second transport side 36 the strand 30th is transported. The first and the second transport side 34 , 36 are so for transporting the shredded Foil material or the strand formed therefrom 30th set up.

The first and second suction train conveyors 10th , 12th are arranged to each other in such a way that the first transport side 34 of the first suction belt 18th the second transport side 36 of the second suction belt 20th is facing so that the shredded film material or the strand formed therefrom 30th from the first suction belt 18th to the second suction belt 20th can be handed over. The first suction line conveyor 10th is arranged such that the first suction belt 18th immediately below the issue zone 28 located, which means that there are no further internals or units between the output zone 28 and the first transport side 34 of the first suction belt 18th available. This relates to internals or units which carry out one or more processing steps on the shredded film material. The collecting funnel 14 is not a unity in this sense. In other words, the shredded film material from the shredding device 8th directly and without further processing on the transport side 34 of the first suction belt 18th of the first suction line conveyor 10th given.

The shredder 8th gives over the output zone 28 a first flow of shredded film material. From the first suction line conveyor 10th will be on the first transport page 34 of the first suction belt 18th promoted a second flow of shredded film material. The control unit 16 the machine 2nd the tobacco processing industry (cf. 1 ) is set up in such a way that this first flow and the second flow differ from one another by less than a predeterminable difference value. In particular, the control unit 16 set up, the crushing device 8th and the first suction line conveyor 10th to control or regulate in such a way that the values of the first and the second flow are the same except for unavoidable and system-related deviations. This is not opposed to that on the first suction belt 18th shaped strand 30th of film material may have a slight slip compared to the first suction belt 18th Has. The speed of the first suction belt 18th can be slightly faster than the speed at which the strand 30th is promoted from foil material.

The first and second flow can be a mass flow and / or a volume flow. So a mass synchronization and / or a volume synchronization between the comminution device is advantageous 8th and the first suction line conveyor 10th reached. In this way, it is both avoided that there is a jam of the shredded film material after the shredding device 8th comes as well that the shredded film material is subjected to unnecessary tensile forces, which would be the case if the second flow was too great compared to the first. It is furthermore particularly provided that the mass and / or volume flow, which is from the second suction line conveyor 12th is promoted to the mass and / or volume flow of the first suction line conveyor 10th is adjusted.

In the example in 5 shown arrangement, the shredded film material leaves the shredding device 8th directly downwards, i.e. in the direction of gravity. The shredded film material initially has no horizontal speed component, which is why it comes into contact with the first transport side 34 of the first suction belt 18th of the first suction line conveyor 10th undergoes a great acceleration.

The machine can support this acceleration of the shredded film material and thus reduce the mechanical loads acting on the shredded film material 2nd according to a further exemplary embodiment an in 5 schematically and simplified compressed air unit 38 include. This compressed air unit 38 includes a source of compressed air 40 , which is, for example, a connection to a compressed air supply system or a compressor, a compressed air connection line 46 which is the compressed air source 40 with a compressed air nozzle 44 connects, as well as the compressed air nozzle 44 itself. At the compressed air nozzle 44 a compressed air flow indicated by an arrow is provided, which is the output zone 28 leaving shredded film material in a first transport direction T1 of the first suction line conveyor 10th accelerates.

According to a further exemplary embodiment, which in connection with 2nd to be explained, it is provided that the shredded film material has a speed component in the horizontal direction, ie essentially in the direction of the first transport direction T1 of the first suction line conveyor 10th to give by the reels 81 , 82 the shredding device 8th be inclined. The first roller 81 rotates around the first axis of rotation R1 . The second roller 82 rotates around the second axis of rotation R2 . The two axes of rotation R1 and R2 lay a first level E1 firmly. The first transport page 34 of the first suction belt 18th of the first suction line conveyor 10th defines a second level E2 . The rotation axes R1 and R2 defined first level E1 becomes opposite to the second level E2 through an angle α tilted, which is between 0 ° and 90 °. In other words, the level lies E1 no longer parallel to the plane E2 . The angle α around which the first and second levels E1 , E2 are tilted against each other is in 2nd indicated. Through this tilting, the shredder receives this 8th shredded film material a speed component, which is in the direction of the first transport direction T1 of the first suction line conveyor 10th points.

According to a further embodiment not shown in the figures, it is provided that the comminution device 8th comprises a longitudinal and cross-cutting roller pair, which is set up to shred the flat film material into a large number of individual small film parts. In this embodiment, no film strips leave 26 , but individual small film parts the output zone 28 the shredding device 8th and get to the first transport page 34 of the first suction belt 18th of the first suction line conveyor 10th . Due to the complete shredding of the flat film material, a process decoupling takes place between the shredding and the transport of the film material. In such a case there would be a mass and / or volume synchronization between the comminution device 8th and the first suction line conveyor 10th no longer required at any point in time, but there would be a build-up of the shredded sheet material over time if the shredding device 8th permanently produces more material than the first suction line conveyor 10th promotes. Conversely, the density of the strand would 30th should decrease continuously, that of the shredder 8th ejected mass of shredded film material should be permanently lower than that of the first suction line conveyor 10th removed mass.

All of the features mentioned, including those that can be seen in the drawings alone and also individual features that are disclosed in combination with other features, are considered to be essential to the invention, alone and in combination. Embodiments according to the invention can be fulfilled by individual features or a combination of several features. In the context of the invention, features that are labeled “in particular” or “preferably” are to be understood as optional features.

Reference list

2nd

Machine of the tobacco processing industry

6

flat foil material

8th

Shredding device

10th

first suction line conveyor

12th

second suction line conveyor

14

Collecting funnel

16

Control unit

18th

first suction belt

20th

second suction belt

22

Disc knife

24th

Feed zone

26

Film strips

28

Output zone

30th

strand

32

Guide jaws

34

first transport page

36

second transport side

38

Compressed air unit

40

Compressed air source

44

Compressed air nozzle

46

Connecting line

41, 42, 43

Idlers

81

first roller

82

second roller

R1

first axis of rotation

R2

second axis of rotation

M

Material flow

T1

first transport direction

E1

first floor

E2

second level

Claims (13)

Machine (2) of the tobacco processing industry for loading a strand machine, characterized in that the machine (2) arranged in a material flow direction (M) one after the other comprises a shredding device (8), a first and a second suction strand conveyor (10, 12), wherein - The comminution device (8) comprises two mutually interacting rollers (81, 82) which form a pair of rollers rotating in opposite directions, on the upstream side of which there is a feed zone (24) via which flat foil material (6) can be fed to the pair of rollers , and on the downstream side of which there is an output zone (28) via which film material shredded by the pair of rollers can be discharged, - the first suction strand conveyor (10) has a first suction belt (18) with a first transport side (34) and the second suction strand conveyor ( 12) comprises a second suction belt (20) with a second transport side (36), - the first and the second T transport side (34, 36) are set up for transporting the shredded film material, the first suction line conveyor (10) and the comminution device (8) are arranged relative to one another in such a way that shredded film material can be transferred from the discharge zone (28) to the first transport side (34) and the first and second suction line conveyors (10, 12) are arranged relative to one another are that the first transport side (34) faces the second transport side (36) and the shredded film material can be transferred from the first suction belt (18) to the second suction belt (20), - the machine (2) also a control unit (16) which is set up to control or regulate a first flow of shredded film material emitted by the shredding device (8) via the discharge zone (28) and a second flow of shredded film material conveyed by the first suction line conveyor (10) such that the the first and the second flow differ from one another by less than a predeterminable differential limit. Machine (2) after Claim 1 , characterized in that the first suction line conveyor (10) is arranged below the discharge zone (28). Machine (2) after Claim 1 or 2nd , characterized in that a compressed air unit (38) is provided for providing a compressed air flow at a compressed air nozzle (44), which is arranged in such a way that a compressed air flow emerging from the compressed air nozzle (44) contains the shredded film material leaving the discharge zone (28) in a first Transport direction (T1) of the first suction line conveyor (10) accelerated. Machine (2) according to one of claims 1 to 3, characterized in that the rollers (81, 82) of the roller pair of the comminution device (8) each comprise a plurality of disc knives (22) arranged in parallel to one another or are designed as cutting rollers, the The pair of rollers is set up to shred the flat film material (6) into a multiplicity of parallel film strips (26), which reach the first suction belt (18) of the first suction strand conveyor (10) via the discharge zone (28). Machine (2) after Claim 4 , characterized in that the pair of rollers comprises a first roller (81) which is rotatable about a first axis of rotation (R1) and a second roller (82) which is rotatable about a second axis of rotation (R2), the first and the second axis of rotation (R1, R2) define a first plane (E1) which, with a longitudinal direction of the first suction belt (18) oriented in a material flow direction, encloses an angle greater than 0 ° and less than or equal to 90 °. Machine (2) after Claim 4 or 5 , characterized in that the control unit (16) is further configured to control or regulate a conveying speed of the first suction line conveyor (10) and a cutting speed with which the parallel film strips (26) leave the comminution device (8) in such a way that the conveying speed and the cutting speed differ from one another by less than a second predefinable limit value. Machine (2) according to one of Claims 1 to 3, characterized in that the comminuting device (8) comprises a pair of longitudinal and transverse cutting rollers and is set up to comminute the flat film material (6) into a large number of individual small film parts, which reach the first suction line conveyor (10) via the discharge zone (28). Method for operating a machine (2) in the tobacco processing industry for feeding a strand machine, characterized in that the machine (2), arranged in succession in a material flow direction, comprises a comminution device (8), a first and a second suction line conveyor (10, 12), wherein - the comminution device (8) comprises two mutually interacting rollers which form a counter-rotating pair of rollers, on the upstream side of which there is a feed zone (24) via which flat film material is fed to the pair of rollers, and on the downstream side thereof there is an output zone (28), through which the material of the film shredded by the pair of rollers is output, - the first suction line conveyor (10) has a first suction belt (18) with a first transport side (34) and the second suction line conveyor (12) has a second suction belt (20 ) with a second transport side (36), - on which it most and the second transport side (34, 36) of shredded film material is transported, - the first suction line conveyor (10) and the shredding device (8) are arranged in such a way that shredded film material is transferred from the discharge zone (28) to the first transport side (34) and the first and second suction strand conveyors (10, 12) are arranged with respect to one another such that the first transport side (34) faces the second transport side (36) and the shredded film material from the first suction belt (18) to the second suction belt (20 ) is transferred, - the machine (2) further comprises a control unit (16) which has a first flow of shredded film material which is delivered by the shredding device (8) via the discharge zone (28) and a second flow which is conveyed by the first suction train conveyor (10) on shredded film material controls or regulates in such a way that the first and the second flow by less than a predetermined difference limit value differ from each other. Procedure according to Claim 8 , characterized in that the machine (2) comprises a compressed air unit (38) for providing a compressed air flow to a compressed air nozzle (44), which is arranged in such a way that a compressed air flow emerging from the compressed air nozzle (44) comminutes the comminuted leaving the discharge zone (28) Film material accelerated in a first transport direction (T1) of the first suction line conveyor (10). Procedure according to Claim 8 or 9 , characterized in that the rollers (81, 82) of the roller pair of the comminution device (8) each comprise a plurality of disc knives (22) arranged parallel to one another or are designed as cutting rollers with which the flat foil material is inserted into a plurality of parallel foil strips (26 ) is separated, and the film strips (26) reach the first suction strand conveyor (10) via the discharge zone (28). Procedure according to Claim 10 , characterized in that the film strips (26) are output by the comminution device (8) in a direction which is less than 90 ° and larger with a material flow direction which the film strips (26) assume on the first suction belt (18) includes 0 °. Procedure according to Claim 10 or 11 , characterized in that the control unit (16) controls or regulates a conveying speed of the first suction strand conveyor (10) and a cutting speed at which the parallel film strips (26) leave the comminution device (8) in such a way that the conveying speed and the cutting speed are less deviate from one another as a second predeterminable limit value. Procedure according to Claim 8 , characterized in that the shredding device (8) comprises a pair of longitudinal and cross-cutting rollers and divides the flat film material into a large number of individual small film parts which reach the first suction line conveyor (10) via the discharge zone (28).

Images