EP2430929A1 - Device and method for manufacturing a continuous strand for the tobacco industry - Google Patents

Abstract

The device has a suction strand conveyor (11) staying in active connection with a suction chamber (12) along a manufacturing path. The conveyor is guided around a pressure disk in a strand inlet region of lower and upper dimensioning devices (21, 24) forming the strand. A compressed air nozzle (36) is arranged upstream of the disk in a region of the conveyor on a side of the conveyor. The disk includes air ducts with openings on a circumferential surface of the disk. The ducts are inclinedly arranged in an angle to a radial of the disk and in or against a strand conveyor direction. An independent claim is also included for a method for manufacturing a continuous strand for a tobacco industry.

Description

The invention relates to a device for constructing a continuous strand of the tobacco-processing industry, in particular a tobacco rod or a filter strand, with a Saugstrangförderer operatively connected along a construction section with a suction chamber in the Strangeinlaufbereich a strand forming format device to a rotating with the Saugstrangförderer pressure washer is led around.

• Aufschauern von Strangmaterial auf einen Saugstrangförderer,
• Fördern des aufgeschauerten Strangmaterials in Richtung einer Formatvorrichtung,
• Verdichten bzw. Anpressen des aufgeschauerten Strangmaterials zwischen einer Pressscheibe und einem Unterformat (21) der Formatvorrichtung,
• Ablösen des Strangmaterials und Formen eines Strangs in der Formatvorrichtung.

The invention further relates to a method for building a continuous strand of the tobacco processing industry, in particular a tobacco rod or filter rod, with the following method steps:

• Shuddering of strand material onto a suction belt conveyor,
• Conveying the swelled strand material in the direction of a format device,
• Compacting or pressing the creased strand material between a dummy block and a sub-format (21) of the format device,
• Peeling off the strand material and forming a strand in the format device.

For producing a cigarette rod and in particular also a filter strand usually sporadic fiber materials, optionally mixed with granular materials or other materials on a circulating in a suction channel strand conveyor in the form of an endless conveyor wound into a strand, which is continuously conveyed away from the strand building area and leveled before he placed on a with a circulating format tape in a format device moving wrapping material strips or without wrapping material strips and in the format device with the wrapping material strips, eg a paper strip, is wrapped or shaped. The wrapping material strip, which in the inlet area of the formatting device initially just enters, is first formed into a U-shape around the strand during the passage through the format device, before it is placed all around the strand and, as a rule, by gluing around the strand to form a cylindrical shell along an overlapping seam is closed around.

As a strand conveyor usually an air-permeable fabric tape is used, in which set by the applied negative pressure or due to a mechanical pressure in compressing the strand fibers or other strand materials in the fabric tape and replace it elsewhere, so that a proper transfer of all strand components is prevented in the format device. In order to ensure that as far as possible all components of the strand, including those which have settled on the strand conveyor, are delivered to the format device, this has at its inlet end a device for stripping strand materials, a so-called scraper or an inlet finger. This consists of a base body and has a scraper edge, which is positioned close to the surface of the strand conveyor and strips the components of the strand from the strand conveyor.

However, the dissolution of fibers that have penetrated into the fabric band or into the strand conveyor proves to be problematic, so that a not inconsiderable part of the filter material or strand material passes through a gap formed between the scraper and the strand conveyor, in particular during filter strand production. It can also happen that the materials discharged from the strand will back up and return to the strand, causing irregularities to form in the strand formed.

Out EP 1 033 082 B1 is an apparatus for building a continuous tobacco rod, with a along a construction route with a suction chamber operatively connected Saugstrangförderer known, which is guided in the Strangeinlaufbereich a tobacco rod forming a wrapped cigarette rod format device around a circulating with the Saugstrangförderer pressure washer, wherein the pressure plate in the area a loop-free peripheral portion is bounded by an on the one hand with the inner storage space of the dummy block and on the other hand in fluid communication with the suction chamber in communication. This serves to increase the reliability and to achieve a better strand formation with an optimized band deflection. In this case, a press disk is shown, which has on both sides at the peripheral edge of the press disk exiting air slots, which are formed in this document in the form of at least eight radial edge slots. By the measure EP 1 033 082 B1 Dust particles that could not be detected and removed by the scraper are sucked from the peripheral surface of the dummy block by a generated permanent suction air flow from the dummy block to the suction chamber, so that no tobacco dust between the peripheral surface of the dummy block and the Saugstrangförderer accumulate and lead to the application of the Saugstrangförderers can and thus damage to the Saugstrangförderers is prevented by the scraper.

It is an object of the present invention to provide a high quality strand of the tobacco processing industry.

This object is achieved by a device for building a continuous strand of the tobacco-processing industry, in particular a tobacco rod or a filter strand, with a along a construction section with a suction chamber in operative connection Saugstrangförderer in the Strangeinlaufbereich a strand forming format device to one with the Saugstrangförderer revolving around the pressing disc, which is further developed in that a Druckluftbeaufschlagungsvorrichtung is arranged upstream of the dummy block in the region of the Saugstrangförderers on the side of the Saugstrangförderers, which is opposite to the side, which is used to build the strand and / or that the press plate air ducts with openings a peripheral surface of the dummy block, wherein the air ducts are arranged obliquely at an angle to the radial of the pressure disk and in or against the strand conveying direction. In or against the strand conveying direction in the context of the invention means, in particular, that a component of the orientation is arranged in this way.

By the first measure according to the invention, that a compressed air supply device upstream of the dummy block in the region of Saugstrangförderers on the side of the Saugstrangförderers is located, which is opposite to the side, which serves to build the strand, a pre-release of the built-up strand is made possible by the Saugstrangförderer, so that At this point, the fibers which have penetrated into the suction belt or into the suction strand conveyor are at least partially released from the composite with the suction belt or the suction belt conveyor.

The Druckluftbeaufschlagungsvorrichtung is then designed so that a compressed air opening is arranged in the direction of the strand to be formed. As a result, a subsequent detachment of the strand formed is simplified, since after applying compressed air less partially penetrated into the Saugstrangförderer and there entangled fibers remain in this state, but are dissolved out of the Saugstrangförderer.

Correspondingly, alternatively or additionally, according to the invention, the press disk can have air ducts with openings on a circumferential surface of the press disk, wherein the air ducts are arranged obliquely at an angle to the radial of the press disk and in or against the strand conveying direction. As a result of this, the detachment process of the strand is also conveyed by the suction strand conveyor, with fibers that are at least partially penetrated here, in particular, being well activated in the suction belt of the suction belt conveyor can. In the embodiment in which the air channels are also arranged in the strand conveying direction, a particularly efficient additional Abförderluftströmung for strand material can be generated, which passes through the slot between the inlet finger and the Saugstrangförderer and thus does not continue to strand formation. In the context of the invention, the feature at an angle to the radial of the dummy block and arranged in or against the strand conveying direction not exactly parallel or antiparallel or perpendicular to the strand conveying direction.

Preferably, the Druckluftbeaufschlagungsvorrichtung is arranged in a region of the Saugstrangförderers, in which a sub-format of the formatting device is present. This avoids that the constructed and formed strand is completely detached and thus disturbed and thus the formed strand undergoes irregularities. Preferably, the Druckluftbeaufschlagungsvorrichtung comprises a nozzle. The nozzle may be a slot nozzle having, for example, a slot which is oriented transversely or perpendicular to the suction belt conveyor or the conveying direction of the suction belt conveyor.

Preferably, the angle of the air passages of the pressure disk in a range of 10 ° to 20 °, in particular between 14 ° and 16 °, to the radial. Preferably, 10 to 50 air ducts are provided in the pressure disk or preferably approximately 25 air ducts are provided in the pressure disk. The air ducts may also be formed as slots whose longitudinal extent are arranged on the surface of the pressure disk substantially parallel to the axis of rotation of the pressure disk. By the compressed air application device according to the invention and also by the air channels according to the invention in the pressure disk, it is possible to compressed air from the direction of the Saugstrangförderers against the on the To direct suction belt conveyor strand constructed so that a pre-detachment of the strand or a support of the detachment of the strand is given by Saugstrangförderer.

Preferably, the suction chamber of the Saugstrangförderers is formed so that no suction air passes through the Saugstrangförderer on one or the upstream side of the body region of the strand on the Saugstrangförderer. This will prevent fibers or other strand materials from entering the suction strand conveyor at the very beginning of the construction of the fiber strand, i. hook with the suction belt. This penetration of the strand material in the suction belt of the suction belt conveyor is in particular prevented by the measure that no suction air passes at the beginning of the strand structure through the Saugstrangförderer, additionally an air flow device is provided, the one, in particular obliquely to the Saugstrangförderer flowing air flow in the conveying direction of Saugstrangförderers produced, wherein the air flow device is arranged in or on a suction duct wall, which is upstream of the conveying direction of the Saugstrangförderers. As a result, the strand materials receive a direction of movement in the strand conveying direction, so that, for example, fiber ends which would otherwise penetrate into the fabric band by suction air now only come into contact with the fabric band.

Preferably, the prevention of suction air passing through the suction belt conveyor on the upstream side of the body region of the strand is achieved by providing a cover in the suction belt conveyor which prevents the passage of suction air or the suction chamber is absent in that region, ie the suction chamber is shortened in total compared to conventional suction chambers, namely the area in which no Suction air should flow through the Saugstrangförderer.

Preferably, an inlet finger for detaching the strand is provided by the Saugstrangförderer, which acts on the strand in the region of the dummy block, wherein the inlet finger is integrally formed and / or has a steady ramp. By providing a one-piece run-in finger with a steady ramp, it has a smooth surface, i. a surface without joint seams or other irregularities, which takes place to a damming of lossy strand material, so strand material that passes through the gap between the finger and the Saugstrangförderer takes place. A continuous ramp is understood to mean a ramp which exists at least in sections without an edge or without interruption. The ramp is provided above the engagement region of the inlet finger with the strand material arranged on the suction strand conveyor.

Further preferably, the Saugstrangförderer on a supporting device which comprises a longitudinally extending in the conveying direction of the Saugstrangförderers sword. The sword is here designed as a slim or narrow counter-bearing to the suction belt of the Saugstrangförderers and acts as an abutment on the side facing away from the strand of the Saugstrangförderers. As a result, a very uniform guidance of the suction belt of the Saugstrangförderers is possible, whereby a very uniform strand formation or a very uniform structure of the strand is made possible.

• Aufschauern von Strangmaterial auf einen Saugstrangförderer,
• Fördern des aufgeschauerten Strangmaterials in Richtung einer Formatvorrichtung,
• Verdichten bzw. Anpressen des aufgeschauerten Strangmaterials zwischen einer Pressscheibe und einem Unterformat der Formatvorrichtung,
• Ablösen des Strangmaterials und Formen eines Strangs in der Formatvorrichtung, das dadurch weitergebildet ist, dass stromaufwärts der Pressscheibe ein Druckluftstrom durch den Saugstrangförderer gegen das aufgeschauerte Strangmaterial ausgebildet ist und/oder im Bereich der Pressscheibe ein Druckluftstrom quer zur Radialen der Pressscheibe durch den Saugstrangförderer auf das Strangmaterial wirkt.

The object is further achieved by a method for constructing a continuous strand of the tobacco-processing industry, in particular a tobacco rod or filter rod, with the following method steps:

• Shuddering of strand material onto a suction belt conveyor,
• Conveying the swelled strand material in the direction of a format device,
• Compacting or pressing the swelled strand material between a dummy block and a sub-format of the format device,
• Detachment of the strand material and forming a strand in the format device, which is further developed in that upstream of the pressure disk, a compressed air flow through the Saugstrangförderer is formed against the Aufwartserstrang material and / or in the pressure disk a compressed air flow across the radial of the pressure disk by the Saugstrangförderer on the Strand material acts.

By the method according to the invention a very efficient and safe strand forming process is possible. In the context of the invention, the terminology in the direction away from the suction belt conveyor in particular includes a penetration of the suction belt conveyor.

Preferably, the compressed air flow acts transversely to the radial of the pressure disk in the conveying direction of the strand material. This means in particular that a component of the compressed air flow is formed in the conveying direction of the strand material. As a result, a very good removal of not removed by the inlet finger or detached strand materials is possible.

Preferably, the compressed air flow upstream of the dummy block, which is formed by the Saugstrangförderer against the Aufauerte strand material, formed in the region of the lower format flowing. Preferably, this compressed air flow is continuous.

Preferably, in the step of upsetting strand material onto the suction belt conveyor in a region of the suction belt conveyor located on the upstream side of the skimmer region, no suction air flows. This can already be prevented that strand material at least partially penetrates into the suction belt of the Saugstrangförderers. The area here lies in particular on the upstream side of the Aufschauerbereichs.

Preferably, in a suction shaft, followed by the Saugstrangförderer, an air flow is generated, which is directed on the upstream side of the Aufschauerbereichs obliquely against the Saugstrangförderer and in the conveying direction of the Saugstrangförderers. As a result, a preferential orientation of the fiber material or strand materials flowing to the suction-strand conveyor in the suction shaft is made possible in the region which is remote from the format device, as a result of which less strand materials penetrate into the suction belt of the suction-strand conveyor. Instead, they attach themselves to the suction belt.

Preferably, the strand material that is lost in the step of stripping the strand material and forming the strand for forming the strand is detected by a transport air stream and carried away.

Fig. 1

eine schematische Seitenansicht einer erfindungsgemäßen Vorrichtung zum Aufbau eines kontinuierlichen Strangs der Tabak verarbeitenden Industrie,

Fig. 2

einen vergrößerten Ausschnitt des Bereichs B aus Fig. 1 in schematischer Darstellung,

Fig. 3

eine schematische Darstellung eines vergrößerten Bereichs A aus Fig. 1,

Fig. 4

eine noch weiter vergrößerte Darstellung der Fig. 3 mit weiteren Elementen in schematischer Darstellung,

Fig. 5

eine schematische Darstellung eines Teils einer Vorrichtung zum Aufbau eines kontinuierlichen Strangs der Tabak verarbeitenden Industrie in einer weiteren Ausführungsform,

Fig. 6

eine Schnittdarstellung durch einen Saugstrangförderer und

Fig. 7

eine Schnittdarstellung entlang C-C der Fig. 6 in schematischer Darstellung.

The invention will hereinafter be understood without limitation of the general The invention is described with reference to exemplary embodiments with reference to the drawings, reference being expressly made to the drawings with regard to all details of the invention which are not explained in greater detail in the text. Show it:

Fig. 1

a schematic side view of an apparatus according to the invention for building a continuous strand of the tobacco processing industry,

Fig. 2

an enlarged section of the area B from Fig. 1 in a schematic representation,

Fig. 3

a schematic representation of an enlarged area A from Fig. 1 .

Fig. 4

a still further enlarged representation of Fig. 3 with further elements in a schematic representation,

Fig. 5

a schematic representation of a part of an apparatus for building a continuous strand of the tobacco processing industry in a further embodiment,

Fig. 6

a sectional view through a Saugstrangförderer and

Fig. 7

a sectional view along CC the Fig. 6 in a schematic representation.

In the following figures, the same or similar elements or corresponding parts are provided with the same reference numerals, so apart from a corresponding renewed idea becomes.

Fig. 1 schematically shows a view of an apparatus according to the invention for building a continuous strand of the tobacco-processing industry, in particular a tobacco rod or a filter strand. In the following, the description assumes a filter strand, wherein the invention is explicitly not limited to the structure of a filter strand. Filter materials or strand materials, the in Fig. 1 not shown, but in Fig. 2 are indicated schematically as 18 and 18 'as fibers enter Fig. 1 from below into the suction shaft 10 up to Saugstrangförderer 11 and are thrown up there or formulated more generally.

The suction belt conveyor 11 comprises a suction belt 25, which is formed continuously encircling and is usually a fabric belt. Preferably, a fabric tape is used, which in the German patent application DE 10 2010 003 287.5 is described. This is a suction belt, which consists of a warp and weft threads fabric, wherein the suction belt is endless or quasi-endless, wherein the height of the warp threads of the suction belt along a weft thread is different, so that the suction belt on one side and flat on the other hand uneven. The uneven side is preferably the inner side, so the side on which the strand material is not aufauert. The uneven side is thus at the deflection elements, such as pulleys or a pressure plate 22 at. This serves for better detachment of a built-up strand from the suction strand conveyor in the region of the pressure disk, which will be discussed in more detail below.

Above the Saugstrangförderer opposite the side, which serves to build the strand, a suction chamber 12 is provided, in which there is a negative pressure, so that there is a suction air flow through the Saugstrangförderer 11. An exception to this is the upstream region of the construction section 38 or of the suction shaft 10, in particular in an initial region of the construction section 38, in which a cover 13 ensures that no or substantially no suction air through the Saugstrangförderer at this point where the cover thirteenth is arranged, passes. This is below in Fig. 2 , in which schematically the area B off Fig. 1 shown enlarged, explained again.

The cover 13 is here introduced into the suction chamber 12, so that in this area no suction air flows through the Saugstrangförderer 11 and the suction belt 25. It is thus achieved that the fibers which are used for strand formation and which are transported in the suction air flow direction 17 in the suction chamber 12 from bottom to top to the suction strand conveyor 11 can not move into the suction belt 25.

With 18 'is shown a fiber in which a corresponding inward movement of the fiber 18' is done in the suction belt 25 to illustrate this process schematically. This can be done in particular in the initial area of the construction line 38, since there fibers that reach the suction belt 25 of the Saugstrangförderers 11, meet directly on the suction belt 25 and not already aufschauerte fibers. If suction air is sucked through the suction belt 25 there, correspondingly fibers can be sucked at least partially into the suction belt. This is prevented by the cover 13. Alternatively, the suction chamber 12 may be correspondingly formed such that it does not extend to the beginning region of the construction stretch 38, that is to say the region which is remote from the format device, for example comprising a sub-format 21 is arranged, ends.

Furthermore, in Fig. 2 shown a further measure, which is to prevent penetration of the fibers 18 in the suction belt 25. For this purpose, a nozzle 15 is provided, which generates an obliquely arranged air flow 16. This gives the fibers 18 an orientation which is aligned parallel to the suction belt 25. Overall, results from these measures a resulting air flow 20, which ensures that fewer fibers 18 can get caught in the suction belt 25. Additionally is in Fig. 2 one of the channel cheeks 19 of the Saugstrangförderers shown, which leads the aufgeauerte material side.

Fig. 3 schematically shows an enlarged view of the area A from Fig. 1 , For better representability because of some elements, such as pulleys, in Fig. 3 not shown. It is very schematically illustrated on the suction belt 25 strand 46 shown. The strand 46 is conveyed in a conveying direction narrowing or tapering intermediate space 45 in the direction of the pressure plate 22 and detached from the inlet finger 23, which is formed in the region of the pressure plate 22 as a scraper. The gap 45 results from a distance between the lower format 21 and the suction belt 25, above which the suction chamber 12 is arranged. As a result, the built-up strand 46 is compressed on the way to the dummy block 22.

After the strand has been detached by the inlet finger 23 of the upper format 24, the strand is correspondingly formed between the upper format 24 and the lower format 21. A wrapping material strip may also be provided, which is arranged on top of the lower format on a format strip, in order to form the strand in the format device around the strand material to be wrapped. However, the wrapping material strip and the format strip are not shown in the figures.

An air flow 30 serves to discharge the material which has not been detached by the scraper or inlet finger 23 and thus passes through the gap between the inlet finger 23 and the suction belt 25 resting on the pressure plate. This is again in more detail in an enlarged view schematically in Fig. 4 shown. The dashed line 31 is intended to represent the fiber flow or the strand material flow passing through the gap between the inlet finger 23 and the suction belt 25 arranged around the pressure plate 22. This material or the fiber stream 31 is detected by the air flow 30. As a result, the strand material not forming a strand can be removed very efficiently.

The dashed line 31 thus shows the continuous losses that penetrate through the scrape gap or inlet finger gap. It makes sense that these fibers can pass and leave the space above the scraper or inlet finger 23 unhindered, otherwise they would back up to the scraper gap and build up on the edge of the scraper and tear off into the strand. This tearing of built-up fibers from the edge of the scraper into the strand leads to so-called soft spots in the strand.

In the Fig. 4 illustrated embodiment of the inlet finger 23 allows the fiber losses, unhindered to pass the space above the edge of the scraper. In this case, the surface of the inlet finger, which is arranged upwards to the pressure plate 22, designed as a smooth or continuous ramp, which generates a continuous opening of the free space above the inlet finger 23. In particular, a scavenge air channel 39 is formed, which passes through the cover 35 and the pressure plate 22 is limited. If the fiber losses have reached the upper region of the free space above the inlet finger 23, they are detected by the air flow 30, which flows from the left into the open space or the scavenging air channel 39. The air flow 30 ruptures the fiber losses 31 with it in the suction belt conveyor and further into a disposal cabinet, not shown. The inlet finger 23 is here formed in one piece, resulting in a smooth or steady ramp.

Furthermore, in Fig. 4 represented very well the channels 26 of the pressure plate 22, can flow through the compressed air 44. In this embodiment, the channels are each arranged at an angle from the radial and additionally in the conveying direction 40 of the suction belt conveyor or partially in the conveying direction of the suction belt conveyor. In operation, compressed air 44 is only in the in Fig. 4 shown portion of the arrow passed through the Saugstrangförderer 11. From reaching the inlet finger 23 to almost to reach the arrow 44, the compressed air is switched off. The compressed air thus acts only in a rotation angle range of the pressure disk from 2 ° to 15 °.

In addition, there are still pulleys 33 and 34 in Fig. 4 shown, which serve to deflect the suction belt 25.

In order to support the critical process step of strand detachment from the suction belt, in a further embodiment of the invention, which is disclosed in US Pat Fig. 5 a support of strand separation by means of compressed air 37, which flows through a compressed air nozzle 36 through the Saugstrangförderer 11 and the suction belt 25 passes through and acts on the Aufgescherten or constructed strand provided. In this way, in the suction belt 25 entangled strand materials, such as fibers, triggered from the suction belt become. The compressed air used is in a range of 1 to 3 bar and can preferably be adjusted via a proportional valve. The compressed air 37 is preferably switched on with the start of the seam gluing of the wrapping material strip. The introduction of the compressed air 37 takes place in this embodiment in a region in which the strand is already guided from below through the lower format 21, ie in the inlet chamber.

In Fig. 6 schematically is a section through a suction belt conveyor 11, comprising a suction belt 25, shown. For guiding the suction belt 25, a side rail 41 and a side rail 42 are provided, which leads the suction belt to the side and upwards. In addition, a sword 43, so a slender or narrow counter-bearing is provided substantially centrally to the suction belt 25, which extends longitudinally with the suction belt. In Fig. 7 is a schematic sectional view along the section C of Fig. 6 shown. It can be seen in particular the longitudinal extent of the sword 43 with the suction belt 25.

The air passages 26 of the pressure disk 22 may be formed as slits extending substantially parallel to the axis of rotation on the surface of the pressure plate 22 and having an opening to an interior of the pressure plate, can be fed to the pressure. The overpressure can here be in the range of 1 to 5 bar. In addition, the channels can be configured as conical slots. Further, the channels 26 are employed at an angle to the strand conveying direction and to the respective radial of the pressure disk.

All of these features, including the drawings to be taken alone as well as individual features that are disclosed in combination with other features are alone and in combination regarded as essential to the invention. Embodiments of the invention may be accomplished by individual features or a combination of several features.

LIST OF REFERENCE NUMBERS

10

suction well

11

suction rod

12

suction chamber

13

cover

14

wall

15

jet

16

airflow

17

suction air

18

fiber

18 '

fiber

19

channel cheek

20

resulting airflow

21

under format

22

dummy block

23

intake finger

24

upper format

25

suction belt

26

channel

30

airflow

31

fiber stream

32

ramp

33

idler pulley

34

idler pulley

35

cover

36

compressed air nozzle

37

compressed air

38

build-up zone

39

scavenging air

40

Strand conveying direction

41

sidebar

42

sidebar

43

sword

44

compressed air

Claims (15)

Apparatus for constructing a continuous strand of the tobacco-processing industry, in particular a tobacco rod or a filter strand, with a suction strand conveyor (11) operatively connected to a suction chamber (12) along a construction section (38), which in the strand inlet region of a forming device forming the strand (21 , 24) is guided around a pressing disc (22) rotating with the suction-strand conveyor (11), characterized in that a compressed-air loading device (36) is arranged upstream of the pressing disc (22) in the region of the suction-strand conveyor (11) on the side of the suction-strand conveyor (11) which is opposite to the side which serves to build up the strand, and / or that the pressing disc (22) has air channels (26) with openings on a peripheral surface of the pressing disc (22), wherein the air channels (26) are inclined are arranged at an angle to the radial of the pressure disc (22) and in or against the strand conveying direction (40). Apparatus according to claim 1, characterized in that the Druckluftbeaufschlagungsvorrichtung (36) in a region of the Saugstrangförderers (11) is arranged, in which a Unterformat (21) of the format device (21, 24) is present. Apparatus according to claim 1 or 2, characterized in that the Druckluftbeaufschlagungsvorrichtung (36) comprises a nozzle. Device according to one of claims 1 to 3, characterized in that the angle of the air ducts (26) in the range of 10 ° to 20 °, in particular between 14 ° and 16 °, to the radial of the pressure plate (22). Device according to one of claims 1 to 4, characterized in that the suction chamber (12) is formed so that on an upstream side of the body region (38) of the strand on the suction belt conveyor (11) no suction air passes through the suction belt conveyor (11). Device according to one of claims 1 to 5, characterized in that an air flow device (15) is provided which generates a, in particular obliquely to Saugstrangförderer (11) flowing air flow (16) in the conveying direction (40) of the Saugstrangförderers (11), said is arranged in or on a suction duct wall (14), which is upstream of the conveying direction (40) of the Saugstrangförderers (11). Device according to one of claims 1 to 6, characterized in that an inlet finger (23) for detaching the strand from the suction strand conveyor (11) is provided, which acts in the region of the pressing disc (22) on the strand, wherein the inlet finger (23). has an integral design and / or a continuous ramp (32). Device according to one of claims 1 to 7, characterized in that a scavenging air duct (39) in the region of the pressure plate (11) is provided. Device according to one of claims 1 to 8, characterized in that the Saugstrangförderer (11) comprises a supporting device (41-43) which comprises a longitudinal direction in the conveying direction (40) of the Saugstrangförderers (11) sword (43). Method for building up a continuous strand of the tobacco-processing industry, in particular a tobacco rod or filter rod, with the method steps: - Churning of strand material on a suction belt conveyor (11), Conveying the quilted strand material in the direction of a format device (21, 24), Compacting the swelled strand material between a pressure disk (22) and a sub-format (21) of the format device (21, 24), Detaching the strand material and forming a strand in the format device (21, 24), characterized in that upstream of the pressure plate (22) a compressed air flow (37) is formed by the suction strand conveyor (11) against the stranded strand material and / or in the region of Press disc (22) a compressed air flow (44) transversely to the radial of the pressure plate (22) through the suction belt conveyor (11) acts on the strand material. A method according to claim 10, characterized in that the compressed air flow (44) acts transversely to the radial of the pressure disk (22) also in the conveying direction (40) of the strand material. A method according to claim 10 or 11, characterized in that the compressed air flow (37) upstream of the pressure disc (22), which is formed by the Saugstrangförderer (11) against the Aufschauerte strand material, in the region of the lower format (21) flows. Method according to one of claims 10 to 12, characterized in that in the step of the Aufspraufen of strand material on the Saugstrangförderer (11) in a Aufschauerbereich (38) of the Saugstrangförderers (11), which lies on the upstream side of the Aufschauerbereichs (38), none Suction air flows. Method according to one of claims 10 to 13, characterized in that in a suction shaft (10), which is followed by the Saugstrangförderer (11), an air flow (16) is generated, on the upstream side of the Aufschauerbereiches (38) obliquely against directed to the Saugstrangförderer (11) and in the conveying direction (40) of the Saugstrangförderers (11) is. Method according to one of claims 10 to 14, characterized in that the strand material, which is lost in the step of detaching the strand material and forming the strand for forming the strand, is detected by a transport air flow and conveyed away.

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