EP2668857A2 - Transport drum for the tobacco processing industry - Google Patents

Abstract

The conveying drum (100) has stops (24) that are provided at the side of the receiving troughs (20). A cover (40) for receiving troughs is provided in conveying region of the conveying drum in the circumferential direction. The cover is provided to cover conveying region of the conveying drum between the end stops of the receiving troughs for the rod-shaped articles. An independent claim is included for machine.

Description

The invention relates to a conveyor drum of the tobacco-processing industry for conveying rod-shaped articles of the tobacco industry, in particular filter rods and filter rod segments, in transverse axial direction with on the outer circumference of the conveyor drum in, preferably regular, spaced receiving troughs for the rod-shaped article.

Furthermore, the invention relates to a machine of the tobacco processing industry, in particular filter manufacturing machine or filter attachment machine, and a filter rod segment providing means for providing filter rod segments made of filter rods.

In machines of the tobacco processing industry, in particular filter attachment machines, conveyor drums are used to transport cigarettes, filter pieces or their components. Under For the purposes of the invention, the term "components" of the cigarettes and filter rods are also understood to mean sections of paper and the like of flat and / or sheet material, eg sections and / or panels of cigarette paper, filter paper or tipping paper for joining tobacco pieces with filter plugs.

The conveyance of the aforementioned objects during the manufacture of cigarettes, filters and filter cigarettes is performed in modern production machines of the tobacco processing industry generally by means of conveyor drums, the lateral surface or the drum body for Queraxialen conveyance of rod-shaped objects (cigarettes, filter rods or filter plugs, filter cigarettes) Grooves or receiving troughs for receiving the objects is provided.

During promotion, these rod-shaped articles of the tobacco processing industry are held in receiving troughs of suction air on the conveyor drums, which bear against corresponding Saugluftöffnungen the receiving troughs. These receiving wells are generally arranged in rows transversely axially one behind the other.

In filter-tying machines, bar-shaped articles, such as e.g. Tobacco sticks or filter plug or filter rods, transversely promoted in receiving troughs of the conveyor drum. Here, the receiving troughs are arranged at predetermined pitches on the peripheral surface of the conveyor drum.

In addition, as conveying drums and sliding / cutting drums are known, which are moved longitudinally axially on a rod-shaped article from a combination of a transport drum, and at least one cutting device or a cutting blade for the transported articles. For example, it is off EP-A-1 700 528 Such a sliding cutting drum known.

These drums are commonly used in the assembly of filter rods and filter cigarettes, with multi-use filter rod components in a so-called cross-process, i. transverse to their longitudinal axes, by single or multiple subdivision, staggering and sequential series for their subsequent connection with other filter components or smoking article components are prepared. For this purpose, a large number of conveyor drums for carrying out the processing steps is necessary. In the course of these processing and handling steps, in particular a defined longitudinal axial positioning or mutual alignment of the filter rod components in their receiving troughs required for a separating cut on successive filter rod components is of importance for the number of tumors determining the length of the conveying path.

In EP-A-1 013 181 a further sliding / cutting drum is disclosed, wherein the smoking article components or filter pieces are moved in the receiving troughs by applying suction air to suction holes of the recordings against longitudinally displaceable stops in a pneumatic manner.

Based on this prior art, the object of the invention is to provide a conveyor drum of the tobacco processing industry, in particular a sliding / cutting drum, to be executed in the simple manner variable longitudinal axial sliding operations of promotional rod-shaped articles on the conveyor drum.

This problem is solved by a conveyor drum of tobacco processing industry for conveying rod-shaped articles of the tobacco processing industry, in particular filter rods and / or filter rod segments, in transverse axial direction with on the outer circumference of the conveyor drum in, preferably regular, spaced receiving troughs for the rod-shaped article, which is further developed by the side of or in the receiving troughs fixed or rigid and the receiving troughs limiting stops are provided, and that in a conveyor region of the conveyor drum in the circumferential direction a cover for a plurality of receiving troughs is provided, covered in the covered by the cover conveyor region of the conveyor drum between the end stops of the receiving troughs at least one further stop can be arranged or arranged for the rod-shaped article.

The invention is based on the idea that on the side or in the receiving wells fixed, i. rigid stops for the rod-shaped articles with respect to the respective receiving wells, preferably during the longitudinal-axial displacement processes, are arranged, so that the rod-shaped articles, such as e.g. Filter rod segments are conveyed by a longitudinal axial displacement in the receiving troughs laterally to the stops of the receiving troughs, while the arranged in the receiving troughs filter rod segments are conveyed on the conveyor drum transversely. In one embodiment may be further provided in the context of the invention that the attacks are designed as non-movable or non-moving stops.

In addition, between the two lateral stops of the receiving wells a further, in particular variable in its position, stop provided on the conveyor drum, so that using appropriate displacement means for Filter rod segments at least a portion of the filter rod segments is promoted against the other stop and positioned on this further stop.

This makes it possible within the scope of the invention, using sliding means or by switching corresponding displacement means, such as. Suction air to obtain a specific arrangement of the individual filter rod segments in the transfer of the filter rod segments to a subsequent conveyor drum, in which case the number of shift operations for the queraxial funded Filterstabsegmente on the conveyor drum can be kept small, creating a low mechanical load or exposure to the filter rod segments becomes.

By providing a cover for a plurality of receiving wells on the drum, it is possible that during delivery of the rod-shaped articles, such as filter rod segments within the conveying region of the cover, the filter rod segments are not subjected to negative pressure for holding the filter rod segments in the receiving wells , By switching off the holding air or the retaining vacuum at the corresponding holes in the receiving troughs, it is possible to promote the funded filter rod segments by acting on longitudinal axial acting suction air for moving the filter rod segments in the longitudinal axial direction against the attacks. In this case, the rod-shaped articles or filter rod segments are moved or sucked against the stops by means of the sliding suction air. By a corresponding circuit of the displacement suction air and using lateral stops on the receiving troughs and the stops between the lateral stops, for example, two initially or initially juxtaposed filter rod segments in the receiving cavities longitudinally axially spaced from each other, so that after the spacing and implementation of longitudinal axial displacement processes of the filter rod segments within or in the receiving troughs the spaced apart in the transfer from each other in the receiving trough filter rod segments for a further conveyor drum and further processing are provided.

According to the invention, it is provided that the further stops provided between the two lateral stops are not part of the conveyor drum and, for example, protrude from the outside to the inside into the receiving troughs of the conveyor drum and the other stops do not rotate with the receiving troughs. By contrast, the rigid stops provided for the receiving cavities at both ends rotate with the receiving cavities and are stationary with respect to the (movable or circulating) receiving cavities.

In the context of the invention, it is provided that corresponding lateral rigid stops are provided on each receiving recess of the conveyor drum on both sides. In addition, it is provided in the context of the invention that only a fixed stop is provided on one side at one end of the receiving troughs.

In addition, an embodiment of the conveyor drum is characterized in that in the region of the lateral rigid or fixed stops of the receiving troughs can be acted upon with vacuum suction air holes, preferably in a drum body of the conveyor drum, respectively provided.

In particular, an embodiment of the conveyor drum is characterized in that the receiving troughs of the conveyor drum are formed like a trough, wherein in particular the, preferably maximum, depth of the receiving wells for the rod-shaped article is equal to or greater than the diameter of the rod-shaped article to be conveyed, so that the to be conveyed rod-shaped articles in the receiving wells, in particular completely or almost completely, are added , Due to the trough-like design of the receiving troughs with the respective lateral stops is achieved that when receiving the rod-shaped article in the conveying region of the cover in the interaction of the recessed receiving troughs and the cover, the receiving wells are almost completely covered, whereby the arranged in the receiving troughs rod-shaped article encapsulated or capsule-like are received in the receiving cavities and formed by the boundaries of the receiving troughs in cooperation with the cover a sliding space for the rod-shaped article.

In addition, it is provided in a further development of the conveyor drum that in the covered by the cover conveyor area of the conveyor drum by forming negative pressure in the limited by the top or outside stationary cover receiving the recorded in the receiving troughs rod-shaped article laterally displaced or pneumatically in the direction of the stops are. In this way, a conveyor drum, which is also designed as a cutting / sliding drum, provided with deep wells, wherein in the deep wells, for example, after the cut of filter rods in filter rod segments, the filter rod segments independently by the formation of längsaxial directional displacement air streams or displacement vacuum to the stops during conveyance in the covered by the cover conveyor area are moved longitudinally axially.

For this purpose, in one embodiment of the conveyor drum is also provided that when forming a negative pressure for longitudinal axial displacement of the rod-shaped article in the receiving wells in one or in the cover covered by the cover receiving the cover has an opening, wherein the opening of the cover in an area of the cover is formed, which faces away from the displacement region of the receiving wells in which the rod-shaped articles are pneumatically displaceable or displaced. As a result, the displacement operations of the rod-shaped article in the conveying region of the cover are facilitated because on the one side of the rod-shaped article due to the intended opening atmospheric pressure is present and on the side facing away from the opening, the rod-shaped articles are subjected to negative pressure, so that the rod-shaped article pneumatically be moved longitudinally axially.

In addition, it is provided in a development of the conveyor drum, that is arranged at least one further stop between the two lateral stops on the receiving troughs on the cover, wherein the at least one further stationary stop projects from outside to inside in the receiving trough or engages. For this purpose, the receiving wells are formed in the region of the further stop with corresponding grooves in the circumferential direction.

In addition, the conveyor drum is characterized in that a holding device is provided for holding the cover, wherein in particular the holding device is arranged on the outside of the conveyor drum. In addition, in one embodiment, the holding device may be arranged on a machine frame of a machine in order to position the cover in a stationary manner on the conveyor drum.

In order to provide a plurality of displacements in the longitudinal axial direction, for example of filter rod segments in a receiving trough during the promotion of the filter rod segments on the conveyor drum, it is proposed that the cover for the receiving troughs in the circumferential direction of the conveyor drum has a length of more than one third, preferably more than half having the outer circumference of the conveyor drum.

In addition, the conveyor drum is characterized in that in the covered by the cover conveyor region of the conveyor drum and between the lateral stops of the respective receiving troughs, the cover has a vacuum acted upon or acted upon Saugluftöffnung. As a result, a negative pressure air flow is formed between the lateral stops of the receiving troughs, whereby the Filterstabsegmente can be moved within the receiving troughs with the help of the side and longitudinal axial effective vacuum air flow.

For this purpose, it is further advantageously provided that to the Saugluftöffnung in the cover, a vacuum source via a provided outside the conveyor drum suction air line is connected to provide a Saugluftstrom for longitudinal axial displacement of the rod-shaped article or filter rod segments in the receiving cavities in the longitudinal axial direction.

In addition, the conveyor drum is characterized in one embodiment in that a cutting device for cutting the rod-shaped article is provided on the conveyor drum, wherein in particular the conveyor drum is designed as a sliding / cutting drum. By combining the conveyor drum with a cutting device, such as cutting blade, it is possible to filter rods to cut in filter rod segments on the conveyor drum, wherein then the cut filter rod segments are moved longitudinally axially in the receiving troughs of the conveyor drum by the formation of displacement air currents or the like in the receiving troughs in a pneumatic manner.

For this purpose, it is further provided that the cutting device is arranged in the region of the cover and thus between the ends of the cover in the circumferential direction of the conveyor drum on the cover.

In addition, an embodiment of the conveyor drum is characterized in that the cutting device, in particular cutting blade, with respect to the conveying direction of the conveyor drum downstream of a between the two lateral stops of the receiving wells, preferably on the cover, arranged stop is provided.

In addition, the object is achieved by a machine of the tobacco-processing industry, in particular filter-making machine or filter attachment machine, which is formed with a conveying drum or sliding / cutting drum according to the invention described above. To avoid repetition, reference is expressly made to the above statements.

In addition, the object is achieved by a filter rod segment providing device for providing filter rod segments produced from filter rods, wherein the filter rods and / or the filter rod segments are conveyed or conveyed transversely axially on the filter rod segment provision device and wherein the filter rod segment provision device is formed with a conveyor drum described above. This will also be done expressly referred to the above statements.

According to the invention, a conveyor drum for rod-shaped articles is provided, wherein during the transverse axial conveying of the rod-shaped articles on the conveyor drum, the rod-shaped articles are moved longitudinally axially in the receiving troughs to form Saugluftströmen in the area provided for at the receiving troughs cover. As a result, different sliding operations can be carried out on a single conveyor drum or sliding drum for the rod-shaped articles, e.g. Filter rod segments form, wherein the transfer to a subsequent conveyor drum, the rod-shaped articles or filter rod segments are positioned in a predetermined manner in the receiving troughs and spaced from each other. In particular, a plurality of filter segments are respectively arranged at predetermined positions in the receiving cavities. For this purpose, two fixed (stationary) outer stops are provided on the receiving troughs in the conveying drum, wherein the stops may be formed, for example, as stop plates or as revolving with the conveyor drum ram or the like.

In addition, at least one or more stops are provided in the displacement space between the two outer stops on the receiving wells. For this purpose, the other stops are attached to a, preferably tubular, bridge which is fixedly arranged on the rotating conveyor drum and wherein the stops protrude from the outside through a drum cover into the sliding space of the drum. As a result, depending on the design of displacement air flows filter rod segments, such as filter plug, moved by means of the flowing air or the formed negative pressure in the receiving troughs within the receiving troughs in the longitudinal axial direction.

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 of the invention may satisfy individual features or a combination of several features.

Fig. 1

schematisch ein abgewickeltes Ablaufdiagramm der Filterstabbearbeitung auf einer erfindungsgemäßen Schneid-/Schiebetrommel der Tabak verarbeitenden Industrie,

Fig. 2a

eine perspektivische Ansicht einer erfindungsgemäßen Fördertrommel zum Fördern von stabförmigen Artikeln der Tabak verarbeitenden Industrie,

Fig. 2b, 2c

weitere perspektivische Ansichten der Fördertrommel im Ausschnitt,

Fig. 2d

eine Frontansicht auf die Fördertrommel im Ausschnitt,

Fig. 2e

schematisch einen Querschnitt durch die Fördertrommel gemäß der in Fig. 2d dargestellten Schnittlinie E-E,

Fig. 3

schematisch einen Ablauf von Verschiebevorgängen auf einer erfindungsgemäßen Fördertrommel gemäß einem ersten Ausführungsbeispiel,

Fig. 4

schematisch einen Ablauf von Verschiebevorgängen auf einer erfindungsgemäßen Fördertrommel gemäß einem zweiten Ausführungsbeispiel,

Fig. 5

schematisch einen Ablauf von Verschiebevorgängen auf einer erfindungsgemäßen Fördertrommel gemäß einem dritten Ausführungsbeispiel,

Fig. 6

schematisch einen Ablauf von Verschiebevorgängen auf einer erfindungsgemäßen Fördertrommel gemäß einem vierten Ausführungsbeispiel,

Fig. 7a, 7b

schematisch jeweils einen Längsschnitt durch eine erfindungsgemäße Fördertrommel mit jeweils einem außenseitig an der Fördertrommel angeordneten Saugkopf gemäß zwei unterschiedlichen Ausführungsbeispielen.

The invention will be described below without limiting the general inventive idea by means of embodiments with reference to the drawings, reference being expressly made to the drawings with respect to all in the text unspecified details of the invention. Show it:

Fig. 1

1 is a developed flow diagram of the filter rod processing on a cutting / sliding drum of the tobacco processing industry according to the invention,

Fig. 2a

a perspective view of a conveyor drum according to the invention for conveying rod-shaped articles of the tobacco processing industry,

Fig. 2b, 2c

further perspective views of the conveyor drum in the neck,

Fig. 2d

a front view of the conveyor drum in the neck,

Fig. 2e

schematically a cross section through the conveyor drum according to the in Fig. 2d illustrated section line EE,

Fig. 3

schematically a sequence of displacement operations on a conveyor drum according to the invention according to a first embodiment,

Fig. 4

1 schematically a sequence of displacement processes on a conveyor drum according to the invention according to a second exemplary embodiment,

Fig. 5

1 schematically a sequence of displacement processes on a conveyor drum according to the invention according to a third exemplary embodiment,

Fig. 6

FIG. 2 schematically shows a sequence of displacement processes on a conveyor drum according to the invention according to a fourth exemplary embodiment, FIG.

Fig. 7a, 7b

schematically in each case a longitudinal section through a conveyor drum according to the invention, each with a suction nozzle arranged on the outside of the conveyor drum according to two different embodiments.

In the drawings, the same or similar elements and / or parts are provided with the same reference numerals, so that apart from a new idea each.

In Fig. 1 schematically shows a flow diagram for the processing of rod-shaped articles, such as filter rods, and cut from the filter rods filter rod segments on a cutting / sliding drum 10 according to the invention. The cutting / sliding drum 10 is preferably part of a machine of the tobacco processing industry for the production of cigarettes or multi-segment filters, wherein in particular the cutting / sliding drum 10 at a supply device or unit for a Filter rod segment is arranged. The cutting / sliding drum 10 has receiving cavities 20 formed on the circumference of a drum body, on each of which rigid stops 22, 24 are arranged on both ends at each end with respect to the respective receiving recess 20.

In method step A, filter rods 30 are arranged in the receiving troughs 20 of the sliding / cutting drum 10 by a conveyor drum (not shown here). For this purpose, a combing device 12 is arranged in the process step A in the filter rod receiving or filter rod receiving to position the accepted filter rods 30 in the receiving troughs 20 between the lateral stops 22, 24 of the receiving troughs. In the following method step B, the filter rods 30 are moved longitudinally axially within the receiving troughs 20 and positioned. In this case, the filter rods 30 are conveyed by rotation of the cutting / sliding drum 10 into a conveying region which is determined by a cover 40 arranged on the outside of the conveying drum. The cover 40 is in the embodiment in Fig. 1 shown schematically.

The cover 40 is arranged at a predetermined distance from the curved surface or curved peripheral surface of the cutting / sliding drum 10. In particular, the cover 40 is arranged as a cover on the cutting / sliding drum 10 for the receiving wells 20, wherein the cover 40 completely covers the receiving cavities 20 of the sliding / cutting drum 10 which have been conveyed into the conveying area. For example, the cover 40 is made of plastic, such as polyethylene (PE), or another bendable or moldable material.

During the promotion of the filter rods 30 within the limited range of the cover 40, the filter rods 30 are moved longitudinally axially in a pneumatic manner against a arranged on the cover 40 and hineingreifenden into the receiving wells stop 42 longitudinal axial in the step B until the filter rods 30 at the end of the process step B laterally against the stop 42. By the stop 42, the filter rods 30 to be cut are aligned centrally with respect to a arranged on the cover 40 and on the cutting / sliding drum 10 cutting blade 44.

The cutting of the aligned by means of the stop 42 filter rods 30 takes place in step C by means of the cutting blade 44, so that from the filter rods 30 two filter rod segments 32, 34 are cut. When cutting the filter rods 30 44 clamping devices or clamping plates 46 are arranged on both sides of the cutting blade to prevent displacement of the filter rods 30 and the filter rod segments 32, 34 in the receiving wells 20.

After cutting the filter rods 30 in step C, the cut filter rod segments 32, 34 in the subsequent step D longitudinally axially spaced from each other by moving the filter rod segments 32, 34 in the receiving wells 20 against the end-side stops 22, 24. In this case, negative pressure is provided at the lateral stops 22, 24 in the conveying region of method step D. Due to the forming or formed air flow, the filter rods 30 and the filter rod segments 32, 34 are moved longitudinally or moved. As a result, the filter rod segments 32, 34 are moved into the receiving troughs 20 in a pneumatic manner by applying laterally acting suction air.

During the promotion of the filter rods 30 and the filter rod segments 32, 34 in covered by the cover 40 conveyor area on the cutting / sliding drum 10 is no holding vacuum for holding the rod-shaped article to the corresponding suction holes of the receiving wells 20 when moving the rod-shaped article, whereby the Filter rods 30 and the filter rod segments 32, 34 in the formation of laterally acting suction air for moving the filter rods 30 and the filter rod segments 32, 34 are moved longitudinally axially within the receiving wells 20 and moved.

For example, to move the filter rods 30 in step B against the stop 42 within the receiving wells 20, for example, a negative pressure between the stops 22 and the stop 42 is formed so that when the holding air is turned off at the receiving troughs and switched sliding suction the filter rods 30 on Stop 42 are positioned.

To move the filter rod segments 32, 34 separated from each other within the receiving trough 20 against the end-side stops 22, 24 in the method step D, the cover 40 has a slot-like opening 41, wherein in the recess 41 a separating body 48 is arranged, whereby the displacement Suction air streams within the receiving wells 20 when moving the filter rod segments 32, 34 do not affect each other. In addition, it is achieved by the separating body 48, such as a separating plate or the like, that on the side remote from the suction air side of the filter rod segments 32, 34 atmospheric pressure is applied, so that thereby the longitudinal axial displacement of the filter rod segments 32, 34 is facilitated. Subsequently, in the further process step E and at the exit of the shifted Filter rod segments 32, 34 from the coverage area covered by the cover 40 passed to the stops 22, 24 respectively arranged filter rod segments 32, 34 to a subsequent conveyor drum (not shown here). Here, in order to support the delivery of the filter rod segments 32, 34 Auskämmeinrichtungen 14 in the region of the filter rod segments 32, 34 disposed on the cutting / sliding drum 10.

The positioning of the lateral stops 22, 24 on the receiving cavities 20 and the positioning of the stop 42 within the delivery area covered by the cover 40 (see method steps B, C, D) make it possible to transfer the filter rod segments 32, 34 align with a predetermined distance to each other as well as different length filter rods 30 to easily edit on the cutting / sliding drum 10 or process. When changing the Filterstablänge the filter rods 30 according to the invention, the stop 42 is aligned with respect to the stationary on the cutting / sliding drum 10 arranged cutting blade 44 so that the filter rods to be cut 30 by means of the variable stopper 42 always centered to the cutting plane of the cutting blade 44th be aligned.

In the context of the invention, at both ends of the receiving trough 20 or receiving troughs 20 stops 22, 24 are provided, each rotate with the receiving wells 20 and with respect to the (movable or rotating) receiving troughs 20 are stationary. In particular, the mechanical stops 22, 24 are rigid.

In the context of the invention, it is also possible according to an embodiment that the stops 22, 24 during the displacement movements in the receiving wells 20 are rigid ie non-moved and before and after the displacement movements of the filter rods 30 or the filter rod segments 32, 34 are moved longitudinally axially or are movable.

In the Fig. 2a to 2e are various views of a conveyor drum 100 for conveying rod-shaped articles, such as filter rods, shown in cross-axial direction schematically in the cutout. The conveyor drum 100 has a rotatable or rotationally driven drum body 110, on the outside of which tub-like receiving troughs 20 are arranged at regular intervals in the circumferential direction one behind the other.

In a conveyor region, the cover 40 is arranged on the outside of the conveyor drum 100, wherein the cover 40 is arranged on the outside of the conveyor drum 100 via a holder 140. In addition, 140 holding arms 141, 142 are provided or mounted on the holder, to which stops 42, 52 are attached. The adjustable in position stops 42, 52 for the rod-shaped article are arranged between the end-side stops 22, 24 in the receiving wells 20, so that when promoting filter rods or filter rod segments covered by the cover 40 conveying area this longitudinal axial by the application of longitudinal axial, ie laterally acting suction air for moving the filter rods or their filter rod segments are moved in the longitudinal axial direction within the receiving troughs.

In addition, 40 openings 54, 56, 58 are formed in the cover, which are offset in the conveying direction and in the longitudinal axial direction to each other. Here, in the cover 40, for example, as recesses formed openings 54, 56, 58th provided to cause a pressure equalization within the receiving troughs when moving the rod-shaped article in forming a flow of air in the longitudinal axial direction for moving the rod-shaped article within the receiving troughs 20.

In the Fig. 2b to 2e was omitted from the marking of the holding devices and other elements for reasons of clarity accordingly.

The in the Fig. 2a to 2e The conveyor drum 100 shown is used for the transverse axial conveying of rod-shaped articles, wherein the conveyor drum 100 is combined in one embodiment with a cutting blade, which is arranged on the conveyor drum 100, to cut the rod-shaped articles into article segments accordingly. As a result, a cutting / sliding drum is provided when the conveyor drum 100 is combined with the cutting device.

Within the scope of the invention, it is conceivable that the conveyor drum 100 can be used without a cutting device in a filter rod supply device or on another machine of the tobacco processing industry for conveying and aligning as well as for displacing rod-shaped articles, such as e.g. Filter rod segments, is used.

In the Fig. 3 to 6 In each case, different displacement processes are schematically illustrated on a conveyor drum according to the invention, wherein the displacement processes carried out beneath a cover 40 arranged on the conveyor drum 100 are each shown in a region framed in dashed lines.

According to the in Fig. 3 illustrated embodiment are in the receiving troughs 20 of the conveyor drum 100 pair filter rod segments 32, 34 introduced into the covered by the cover 40 conveyor area on the conveyor drum 100, wherein during the promotion of the filter rod segments 32, 34 within the delivery region of the holding vacuum at suction holes of the receiving troughs for fixing the filter rod segments 32, 34th is turned off in the receiving wells 20.

The filter rod segments 32, 34 initially arranged centrally in the receiving cavities 20 are moved longitudinally axially against the stop 24 in the direction of the stop 24 due to a suction air bore 124 connected to the fixed stop 24 of the receiving cavities 20 via a lateral suction air bore 124 and with a vacuum source. Here, on the other fixed stop 22 of the receiving wells 20 provided Saugluftbohrung 122 is not subjected to negative pressure, so that the two filter rod segments 32, 34 are promoted against the one end stop 24 of the receiving trough 20 and positioned there.

Subsequently, the arranged on the stop 24 filter rod segments 34 are held by means of suction in position on the adjacent stop 24, while creating a negative pressure on the Saugluftbohrung 122 on the opposite stop 22, a negative pressure within the receiving wells 20, so that from the stop 24 on removed filter rod segment 32 is displaced in the longitudinal axial direction in the direction of the stopper 22 within the respective receiving trough 20 until the displaced filter rod segment 32 is supported against the stop 42.

Due to the arranged on the cover 40 stop 42 between the two lateral end-side stops 22, 24 at the receiving trough 20, the second filter rod segment 32 is also aligned correspondingly at a predetermined distance from the filter rod segment 34 positioned on the stop 24. Before leaving the conveyor area covered by the cover 40, the filter rod segments 32 positioned by the stop 42 are also fixed with a holding vacuum to a corresponding suction bore within the receiving cavity 20 so that after leaving the receiving cavity 20 from the conveyor area covered by the cover 40 the filter rod segments 32, 34 are positioned at a predetermined distance from each other and passed to a subsequent conveyor drum.

In Fig. 4 If filter filament segments 32, 34 are arranged adjacent to one another in a receiving trough 20, the filter rod segments 32, 34 are displaced adjacent to one another against stop 42. In one embodiment of the invention, it is possible that the filter rod segments 32, 34 are already transferred from a preceding conveyor drum to the conveyor drum 100, so that the transferred filter rod segments 32, 34 by a sliding operation within the receiving troughs 20 when entering the cover 40 covered area no longer be postponed.

Further, it is provided in the invention according to an embodiment that filter rods are transferred to the receiving troughs 20 of the conveyor drum 100 and the filter rods are first aligned in the region of the cover 40 to a stop to a cutting device (see. Fig. 1 ) and then cut by means of the cutting device into filter rod segments 32, 34, so that the cutting operation of the filter rods takes place within the coverage area covered by the cover 40. After positioning the filter rod segments 32, 34 on the stop 42 within the coverage area covered by the cover 40, the filter rod segments 32 arranged on the stop 42 are fixed with retaining air in the receiving cavities 20, while the adjacent filter rod segments 34 by applying suction to the outer side Saugluftbohrung 124th the receiving wells 20 are moved longitudinally axially on the stop 24 in the direction of the stop 24. Here, the shifted filter rod segments 34 are moved against another, provided on the cover stopper 40, so that after reaching the position of the filter rod segments 34 on the stop 52, the filter rod segments 34 are also fixed with a holding vacuum, whereby upon transfer of the filter rod segments 32, 34 at a further conveyor drum from the receiving troughs 20 of the conveyor drum 100, the two filter rod segments 32, 34 are aligned longitudinally axially at a predetermined distance due to the selected distance between the two stops 42, 52 to each other.

At the in Fig. 5 In the schematic embodiment shown, the filter rod segments 32, 34 are taken in a staggered manner in the longitudinal axial direction and transverse axial direction in the receiving troughs 20 of the conveyor drum 100 from a preceding conveyor drum.

After entering into the receiving wells 20 in pairs and longitudinally spaced apart filter rod segments 32, 34 of the holding vacuum at the suction holes for fixing the filter rod segments 32, 34 are turned off in the receiving wells 20 and the filter rod segments 32, 34 with laterally acting negative pressure at the Saugluftbohrungen 122, 124 applied to the two end stops 22, 24 with negative pressure. Due to the applied displacement negative pressure at the respective suction air holes 122, 124, the filter rod segments 32 are positioned by the resulting air flow at the end stops 22, while the filter rod segments 34 are positioned on the stop 24 by applying negative pressure to the Saugluftbohrungen 124. After reaching its first end position on the stops 22, 24, the filter rod segments 32, 34 are further promoted cross-axial, wherein the displacement negative pressure at the Saugluftbohrungen 122, 124 is turned off or is.

Subsequently, the filter rod segments 32, 34 which are spaced apart from each other on the outside are brought into the region of the two side by side and parallel stops 42, 52 on the cover 40, wherein between the two stops 42, 52 which project into the receptacles 20 of the conveyor drum 110, a Vacuum is formed via a corresponding suction air opening 126 arranged therebetween, the suction air opening 126 being formed in the receiving cavities 20 in one embodiment.

In a further embodiment (cf. Fig. 7a, 7b) the suction air opening 126 is arranged on the cover 40 via an external suction device.

By forming a suction air flow for displacing the filter rod segments 32, 34, the filter rod segments 32, 34 are moved from the outer stops 22, 24 to the inner stops 42, 52 until the filter rod segments 32, 34 are disposed on the stops 42, 52.

Before the exit of the arranged in the receiving troughs 20 filter rod segments 32, 34 from the covered by the cover 40 In the conveying region, the filter rod segments 32, 34 are fixed in the receiving cavities 20 by means of retaining vacuum via corresponding suction air bores, so that the filter rod segments 32, 34 are transferred to a subsequent conveyor drum at a predetermined longitudinal axial distance.

At the in Fig. 6 illustrated embodiment, two filter rod segment pairs 32, 132 and 34, 134 are arranged in the receiving troughs 20 of the conveyor drum 100 of a preceding conveyor drum. When introducing the receiving wells 20 with the filter rod segments 32, 132, 134, 34 in the coverage area covered by the cover 40 on the conveyor drum 100, the outer Saugluftbohrungen 122, 124 of the receiving wells 20 are acted upon by suction to the respective outer filter rod segments 32, 34 at the outer end-side stops 22, 24 of the receiving wells 20 to position.

Subsequently, the displacement negative pressure at the receiving troughs 122, 124 is switched off and negative pressure between the centrally arranged stops 42, 52, which protrude on the cover 40 from outside to inside the receiving troughs 20, applied. In this case, by means of the Saugluftöffnung 126, a negative pressure within the receiving troughs 20 is generated, so that the inner filter rod segments 132, 134 are moved against the stops 42, 52. Subsequently, the longitudinally axially spaced from each other in the receiving wells 20 filter rod segments 32, 132, 134, 34 are transferred to a subsequent conveyor drum.

In Fig. 7a and 7b In each case, different embodiments of a suction head 60 arranged on the conveyor drum 100 are shown schematically and in section. Here, the suction head 60 is on the outside of the conveyor drum 100 in the region of the cover 40 arranged centrally to the receiving wells 20 and connected to a vacuum source.

In this case, the suction head 60 is formed with the Saugluftöffnung 126 between the arranged on the suction head 60 stops 42, 54, so that the filter rod segments 32, 34 to the center of the receiving trough 20 against the stops 42, 52 by means of the formed air flow in the receiving trough 20 by applying the Saugluftöffnung 126 pushed or moved with negative pressure.

By means of the suction head 60 arranged on the outside of the conveyor drum 100, a hollow, in particular tubular, bridge is formed, wherein the stops 42, 52 are arranged supported on the suction head 60.

For example, in Fig. 7a illustrated embodiment in the shifting operations according to Fig. 5 used. The in Fig. 7b shown suction head 60 is in the in Fig. 6 used schematically shifting operations.

Using the above-described conveyor drum 100, it is possible to move filter rod segments or filter rods in the receiving troughs of the conveyor drum 100 longitudinally in the region of the cover arranged on the conveyor drum 100, wherein at the end of the shifting operations a predetermined arrangement and longitudinal axial spacing of the individual filter rod segments within the respective Receiving trough is obtained. In particular, when using the conveyor drum 100, the number of displacement operations and thus also the mechanical load of the filter rods or the filter rod segments are kept small, for example, in a Filterstabsegmentbereitstellungseinrichtung. All mentioned features, including the drawings alone to be taken as well as individual features that are disclosed in combination with other features are considered alone and in combination as essential to the invention. Embodiments of the invention may be accomplished by individual features or a combination of several features. <U> REFERENCE LIST </ u> 10 Sliding / cutting drum 12 combing out 14 combing out 20 receiving trough 22 attack 24 attack 30 filter rod 32 Filter rod segment 34 Filter rod segment 40 cover 41 recess 42 attack 44 cutting blade 46 clamping plate 48 separating body 52 attack 54 opening 56 opening 58 opening 60 suction head 100 conveyor drum 110 drum body 122 Saugluftbohrung 124 Saugluftbohrung 126 suction air 140 bracket 141 holding arm 142 holding arm

Claims (15)

Conveying drum (10, 100) of the tobacco processing industry for conveying rod-shaped articles (32, 34, 132, 134) of the tobacco processing industry, in particular filter rods (30) and / or filter rod segments (32, 34, 132, 134), in Queraxialer Direction with on the outer circumference of the conveyor drum (10, 100) in, preferably regular, spaced receiving cavities (20) for the rod-shaped article (32, 34, 132, 134), characterized in that the side of the receiving wells (20) fixed and the receiving troughs (20) limiting stops (22, 24) are provided, and that in a conveying region of the conveyor drum (10, 100) in the circumferential direction a cover (40) for a plurality of receiving wells (20) is provided, wherein in the cover (40 ) covered conveying region of the conveyor drum (10, 100) between the end-side stops (22, 24) of the receiving wells (20) at least one further stop (42, 52) for the rod-shaped Article (32, 34, 132, 134) can be arranged or arranged. Conveyor drum (10, 100) according to claim 1, characterized in that in the region of the lateral stops (22, 24) of the receiving troughs (20) acted upon by vacuum Saugluftlöcher (122, 124), preferably in a drum body (110) of the conveyor drum (10 , 100), respectively. Conveying drum (10, 100) according to claim 1 or 2, characterized in that the receiving troughs (20) are formed like a trough, wherein in particular the, preferably maximum, depth of the receiving troughs (20) equal to or greater than the diameter of the to be conveyed rod-shaped article ( 32, 34, 132, 134), so that the rod-shaped articles (32, 34, 132, 134) to be conveyed are received in the receiving cavities (20), in particular completely or almost completely. Conveying drum (10, 100) according to any one of claims 1 to 3, characterized in that covered by the cover (40) conveying region of the conveyor drum (10, 100) by forming negative pressure in the through the top cover (40) limited receiving troughs ( 20) in the receiving troughs (20) recorded rod-shaped article (32, 34, 132, 134) laterally in the direction of the stops (22, 24, 42, 52) are pneumatically displaced or displaced. Conveying drum (10, 100) according to claim 4, characterized in that when forming a negative pressure for moving the rod-shaped articles (32, 34, 132, 134) in the receiving troughs (20) in one or in the cover (40) covered Receiving wells (20) the cover (40) has an opening (52, 54, 56), wherein the opening (52, 54, 56) of the cover (40) in a region of the cover (40) is formed facing away from the displacement region of the receiving wells (20) in which the rod-shaped articles (32, 34, 132, 134) are pneumatically displaceable or displaced , Conveying drum (10, 100) according to one of claims 1 to 5, characterized in that the at least one further stop (42, 52) is mounted on the cover (40). Conveying drum (10, 100) according to one of claims 1 to 6, characterized in that a holding device (140) for holding the cover (40) is provided, wherein in particular the holding device (140) on the outside of the conveyor drum (10, 100). is arranged. Conveying drum (10, 100) according to one of claims 1 to 7, characterized in that the cover (40) for the receiving troughs (20) in the circumferential direction of the conveyor drum (10, 100) has a length of more than one third, preferably more than half, the outer circumference of the conveyor drum (10, 100). Conveying drum (10, 100) according to any one of claims 1 to 8, characterized in that in the covered by the cover (40) conveying region of the conveyor drum (10, 100) and between the lateral stops (22, 24) of the respective receiving troughs (20). the cover (40) has a suction air opening (126) which can be acted upon or acted upon by negative pressure. Conveyor drum (10, 100) according to claim 9, characterized in that on the Saugluftöffnung (125) in the cover (40) a vacuum source via a outside of the conveyor drum (10, 100) provided suction air line is connected. Conveying drum (10, 100) according to any one of claims 1 to 10, characterized in that on the conveyor drum (10, 100) a cutting device (44) for cutting the rod-shaped article (32, 34, 132, 134) is provided, in particular the conveyor drum (10, 100) is designed as a sliding / cutting drum (10). Conveying drum (10, 100) according to claim 11, characterized in that the cutting device (44) in the region of the cover (40) is arranged. Conveying drum (10, 100) according to claim 11 or 12, characterized in that the cutting device (44), in particular cutting blade, based on the conveying direction of the conveyor drum (10, 100) downstream of one between the two lateral stops (22, 24) of the receiving troughs (20), preferably on the cover (40) arranged stop (42, 52) is provided. Machine of the tobacco-processing industry, in particular filter-making machine or filter-tying machine, with a conveyor drum (10, 100) according to one of claims 1 to 13. Filter rod segment providing means for providing filter rod segments made of filter rods, wherein the filter rods and / or the filter rod segments on the filter rod segment providing means be conveyed transaxially or are conveyed, with a conveyor drum (10, 100) according to one of claims 1 to 13.

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