Conveyor drum for the tobacco processing industry

Abstract

The invention relates, inter alia, to a conveying drum (10) for the tobacco processing industry with a drum body (12) that is rotatable or rotatably driven about an axis of rotation (R), in particular a cylindrical drum body (12), wherein two adjacent rows of receiving troughs (141, 142) arranged one behind the other for rod-shaped articles of the tobacco processing industry are provided in the circumferential direction of the drum body (12), wherein the receiving troughs (141, 142) of each row are rotatable or are rotated about an axis of rotation (24.1, 24.2) oriented radially to the axis of rotation (R), wherein several receiving troughs (141, 142) of each row are each formed on a segment body (14.1, 14.2) rotatable about the axis of rotation (24.1, 24.2).

Description

[0001] The invention relates to a conveyor drum for the tobacco processing industry.

[0002] Furthermore, the invention relates to a machine for the tobacco processing industry, in particular a filter segment manufacturing machine, for the production of rod-shaped articles for the tobacco processing industry, in particular multi-segment filters or heat-not-burn products.

[0003] Furthermore, the invention relates to a method for conveying rod-shaped articles of the tobacco processing industry, in particular multi-segment filters or heat-not-burn products.

[0004] In machines used in the tobacco processing industry, especially filter-fitting machines or machines for the production of alternative rod-shaped smoking products such as heat-not-burn products or e-cigarettes, conveyor drums are used to transport cigarettes, filter pieces or their components.

[0005] The conveying of the aforementioned rod-shaped objects during the production of cigarettes, filters, filter cigarettes, so-called heat-not-burn products, or e-cigarettes is generally carried out in modern production machines of the tobacco processing industry by means of conveying drums. The outer surface or drum body of these drums is equipped with grooves or receiving recesses for the transverse axial conveying of rod-shaped objects (cigarettes, filter rods or plugs, filter cigarettes). The receiving recesses for the rod-shaped objects have a recessed base.

[0006] During transport, these rod-shaped articles of the tobacco processing industry are generally arranged in rows transversely one behind the other in receiving troughs.

[0007] Furthermore, it is known in the prior art that devices for turning rod-shaped articles, in particular cigarettes, include a turning drum by means of which the rod-shaped articles are turned. Such devices are used, for example, in cigarette manufacturing machines or filter-setting machines. In a filter-setting machine, filter cigarettes are produced as rod-shaped articles, wherein the articles are produced, for example, with twice the usable length and are then cut into two single-length products (filter cigarettes) or articles by means of a cutting device. Subsequently, in the filter-setting machines, the rod-shaped articles or articles are...Filter cigarettes with uniformly aligned filters are further processed, whereby the filter cigarettes, conveyed in two rows, are turned by means of a turning device, so that the filter cigarettes in a row are rotated 180° around a transverse axis perpendicular to the longitudinal axis. The turned filter cigarettes are then arranged on a conveyor drum between two unturned filter cigarettes in a free receiving trough of the conveyor drum, so that after the turning process a row of filter cigarettes is formed.

[0008] To turn the filter cigarettes, so-called cone turners are also used, among other things, whereby for the turning process the two rows of opposing filter cigarettes must be spread longitudinally axially on a spreading drum before turning, whereby a row of the filter cigarettes or rod-shaped articles is then transferred to the cone turning drums, on which the rod-shaped articles describe a conical path, in order to then be arranged between the unturned filter cigarettes on the conveyor drum on which the unturned rod-shaped articles are conveyed.

[0009] For example, devices for turning rod-shaped articles are disclosed in DE 34 45 945 A1, EP 0 627 175 B1 and DE 199 20 760 A1. Furthermore, a method for spacing and turning two coaxial cigarette-length segments on a filter-attaching machine is described in DE 34 45 575 A1.

[0010] EP 2 904 913 A1 discloses a turning drum, wherein turning segments with two adjacent rows of several receptacles for rod-shaped articles are arranged in the circumferential direction of the drum.

[0011] Furthermore, US 4,676,360 discloses a conveyor drum with receiving recesses designed as carrying trays for stick-shaped cigarettes.

[0012] Furthermore, DE 1 178 756 B discloses a trough drum, wherein the trough drum has a series of rigid troughs and another series with individually rotatable receptacles.

[0013] The object of the invention is to enable the simple turning of several rows of rod-shaped articles on a conveyor drum in a conveying arrangement for conveying rod-shaped articles, wherein in particular several rod-shaped articles with different format lengths are to be conveyed and turned independently of their format.

[0014] The problem is solved by a conveying drum for the tobacco processing industry with the features of claim 1. Furthermore, the problem is solved by a machine for the tobacco processing industry with the features of claim 13. Finally, the problem is solved by a method for conveying rod-shaped articles for the tobacco processing industry with the features of claim 14. Advantageous embodiments are specified in the dependent claims.

[0015] A conveying drum for the tobacco processing industry is designed with a drum body, in particular cylindrical, which is rotatable or driven in rotation about an axis of rotation, wherein two adjacent rows of receiving troughs arranged one behind the other for rod-shaped articles of the tobacco processing industry are provided in the circumferential direction of the drum body, wherein the receiving troughs of each row are rotatable or rotated about an axis of rotation oriented radially to the axis of rotation, preferably independently of each other, wherein several receiving troughs of each row are each formed on a segment body rotatable about the axis of rotation.

[0016] In particular, it is provided that the receiving troughs of each row can be moved or moved independently of one another by means of a linearly movable movement rod aligned parallel to the axis of rotation of the conveyor drum and coupled to the respective receiving trough, especially when the conveyor drum is simultaneously rotating around the axis of rotation.

[0017] In the conveying drum, the rod-shaped articles, such as filter plugs, filter cigarettes, multi-segment filters, or, in particular, multi-segment heat-not-burn products, which are conveyed and arranged in the receiving troughs of two adjacent rows, are rotated or turned during conveying on the drum. Simultaneously, the longitudinal axial distance between two opposing end ends of the rod-shaped articles of the two rows can be increased or decreased when the articles are loaded onto the conveying drum, compared to the distance between the opposing end ends of the rotated or turned pairs of rod-shaped articles of the two rows when the articles are discharged to a subsequent conveying drum. This allows the conveyed rod-shaped articles to be turned on the drum and, upon discharge to a subsequent conveying drum, to be spread apart from one another.For this purpose, to move the rotatable receiving troughs of the conveyor drum, the axes of rotation of two adjacent receiving troughs in the two rows are aligned parallel to each other, with the axes of rotation being aligned radially to the axis of rotation of the conveyor drum. Preferably, the linearly movable connecting rods for the receiving troughs, aligned parallel to the axis of rotation of the conveyor drum, are moved independently of each other or simultaneously.

[0018] For the movement of the receiving recesses, a moving rod is provided for each axis of rotation of the receiving recesses. The movement of the individual moving rods can be either synchronous or asynchronous.

[0019] In a further development of the conveyor drum, it is provided that the linearly movable drive rods for the respective receiving troughs can be moved or are moved by means of a lifting cam. This creates, in a simple mechanical way, a movement of the drive rods and thus also a rotation of the receiving troughs around the axes of rotation.

[0020] In addition, according to a further aspect, it is provided that, with respect to the axis of rotation of the conveyor drum, the receiving troughs are arranged between the lifting cams for the two rows.

[0021] Furthermore, a further development of the conveyor drum is characterized by the fact that the movement rods for two receiving recesses of the two rows arranged side by side in the longitudinal extension of the conveyor drum have a different radial distance to the axis of rotation of the conveyor drum.

[0022] According to an advantageous embodiment, the conveying drum is further provided that the lifting cams each have a curved stroke for the drive rods, wherein the respective curved strokes of the lifting cams are designed such that the drive rods perform a movement in the same direction simultaneously or with a time delay when the drum body rotates, and / or the drive rods perform stroke movements of the same or different magnitudes simultaneously or with a time delay when the drum body rotates. This enables flexible turning and spreading of the rod-shaped articles from two rows of rod-shaped articles. Before being transferred to the conveying drum, the rod-shaped articles are aligned transversely one behind the other in two rows and are transferred to the conveying drum in two rows. When the rod-shaped articles are discharged from the conveying drum after rotation or...When the rod-shaped articles on the conveyor drum are turned towards a subsequent conveyor drum, the turned rod-shaped articles are conveyed further in two rows of rod-shaped articles arranged transversely axially one behind the other.

[0023] In one design of the conveyor drum, it can be provided that, by means of a corresponding lifting track, a series of rod-shaped articles on the conveyor drum are rotated or turned, while the other series of receiving troughs remains stationary. In this case, the moving rod does not perform a linear movement, and the corresponding lifting track for this moving rod is a flat circular path.

[0024] Furthermore, one design of the conveyor drum is characterized by the fact that during a complete rotation of the drum body by 360°, the receiving troughs of each row are rotated from a starting position by 180° and, after reaching a rotation position of 180°, are rotated back to the starting position.

[0025] Furthermore, it is advantageously provided in the conveyor drum that the moving rods are designed as racks, with the racks interacting with a pinion shaft for the receiving recesses.

[0026] It is advantageously provided that the pinion shafts of the receiving recesses are rotatable about the respective axis of rotation of the receiving recesses.

[0027] In particular, according to another aspect, the pinion shafts for the receiving recesses are rotatably mounted by means of a ball bearing, in particular a deep groove ball bearing, and a needle bearing.

[0028] Furthermore, in one embodiment of the conveyor drum, it is preferred that the moving rods for the receiving troughs are each subjected, or can be subjected, to a force by means of a compression spring, in particular against the lifting cam for the moving rods. This ensures reliable guidance of the moving rods or their ends, which interact with the lifting cam.

[0029] Advantageously, according to another aspect, the respective drive rods for a pair of pinion shafts arranged adjacent to each other along the axis of rotation of the conveyor drum are located on opposite sides of the pinion shafts. This results in a compact arrangement of the drive rods.

[0030] According to a further preferred aspect of the conveyor drum, it is provided that the receiving troughs arranged side by side in the longitudinal extension of the conveyor drum are rotated in the same direction or are rotatable when rotating about their respective axes of rotation.

[0031] Furthermore, a further development of the conveyor drums is characterized by the fact that the movement rods for a pair of receiving recesses arranged side by side in the longitudinal extension of the conveyor drum are movable or can be moved independently of each other, preferably by means of the respective lifting cam.

[0032] Furthermore, in one design of the conveyor drum, individual receiving recesses in each row, or multiple receiving recesses in each row, are formed on a segment body that can rotate around the axis of rotation. Depending on the design, the segment bodies can have either a single receiving recess for a rod-shaped article or, in another design, multiple receiving recesses, each for a rod-shaped article. If the segment body has multiple receiving recesses, these recesses are aligned parallel to each other on the segment body. As the conveyor drum rotates, the respective segment bodies, each holding multiple rod-shaped articles, are rotated or turned around their respective axis of rotation.

[0033] In particular, one design of the conveyor drum provides that the receiving recesses on the respective segment bodies are arranged such that the central longitudinal axes of the receiving recesses run outside the axis of rotation of the segment bodies. This makes it possible for the rod-shaped articles to be turned on the conveyor drum and simultaneously spread apart in the longitudinal axial direction during conveying and rotation of the segment bodies around their axes of rotation.

[0034] In particular, the conveyor drum is designed as a reversing and spreading drum.

[0035] Furthermore, a machine for the tobacco processing industry, in particular a filter segment manufacturing machine, for the production of rod-shaped articles for the tobacco processing industry, especially multi-segment filters or heat-not-burn products, is designed with a conveying drum as described above. To avoid repetition, explicit reference is made to the above statements.

[0036] Furthermore, a method for conveying rod-shaped articles of the tobacco processing industry, in particular multi-segment filters or heat-not-burn products, is provided, wherein pairs of rod-shaped articles arranged coaxially to one another along a conveying path are conveyed transversely axially on a first conveying element, in particular a conveying drum, wherein the rod-shaped articles of both rows are conveyed by the first conveying element to a conveying drum according to one of claims 1 to 13 with a drum body rotatable or driven in rotation about an axis of rotation, in particular cylindrical, wherein in the circumferential direction of the

[0037] The drum body is provided with two adjacent rows of consecutively arranged receiving troughs for rod-shaped articles of the tobacco processing industry, wherein the receiving troughs of each row are rotatable or rotated about an axis of rotation radially aligned to the axis of rotation, wherein several receiving troughs of each row are formed on a segment body rotatable about the axis of rotation, wherein during the conveying of the rod-shaped articles on the conveying drum the rod-shaped articles are rotated by 180° and after their rotation are transferred to a second conveying element, in particular a second conveying drum.During the conveying of the rod-shaped articles on the conveyor drum, and after a 180° rotation, the opposing ends of the rod-shaped articles from both rows are arranged with a smaller or larger longitudinal axial distance from each other compared to the longitudinal axial distance of the facing and opposing ends of the rod-shaped articles of both rows before the rotation of the rod-shaped articles on the conveyor drum. The method is carried out using the conveyor drum described above. To avoid repetition, explicit reference is made to the above statements.

[0038] 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 may fulfill individual features or a combination of several features.

[0039] The invention is described below, without limiting the general concept of the invention, with reference to exemplary embodiments and the drawings, whereby for all details of the invention not explained in detail in the text, explicit reference is made to the drawings. The drawings show: Fig. 1 schematically shows a perspective view of a rotating spreader drum; Fig. 2 schematically shows a view of gear drives for rotatable article segments of the rotating spreader drum (cf. Fig. 1 ) and Fig. 3 schematically shows a partial cross-section through a pinion shaft for an article segment of the turning spreader drum (cf. Fig. 1 ).

[0040] Within the scope of the invention, features marked with "in particular" or "preferably" are to be understood as optional features.

[0041] In the drawings, identical or similar elements and / or parts are provided with the same reference numbers, so that a re-presentation is omitted.

[0042] In Fig. 1 Figure 10 is a schematic perspective view of a rotating and spreading drum 10 according to the invention. The rotating and spreading drum 10 is a component of a machine for the production of rod-shaped articles for the tobacco processing industry, such as multi-segment filters or rod-shaped heat-not-burn products. Furthermore, the rotating and spreading drum 10 can also be a component of a conveying arrangement for conveying rod-shaped articles, for example, a filter-fitting machine.

[0043] The reversing spreader drum 10 has an outer, cylindrical drum body 12, which is driven to rotate about an axis of rotation R by means of a drive, such as a single drive. On the outside of the drum body 12, article segments 14.1, 14.2 are arranged circumferentially one behind the other in two rows R1, R2. The article segments 14.1, 14.2 each have spaced-apart receiving recesses 141, 142 on their outer surface, which can be pressurized with negative pressure. During the transfer from a conveying drum arranged upstream in the conveying direction of rod-shaped articles, the rod-shaped articles are arranged in the receiving recesses 141, 142. In this process, the rod-shaped articles, such as multi-segment filters, are conveyed by the upstream conveying drum in two rows side by side and arranged transversely one behind the other.

[0044] The article segments 14.1 form a row R1 of article segments 14.1 arranged one behind the other in the circumferential direction of the turning and spreading drum 10. The article segments 14.2, arranged longitudinally along the turning and spreading drum 10 and next to the article segments 14.1 of row R1, form a second row R2 of article segments 14.2. The article segments 14.1 and 14.2 of rows R1 and R2 are each rotatable about a pivot axis 24.1 and 24.2, respectively. The respective pivot axes 24.1 and 24.2 of the article segments 14.1 and 14.2 are oriented in Fig. 1Indicated by dashed lines. The axes of rotation 24.1, 24.2 of the article segments 14.1, 14.2 are oriented radially outwards with respect to the axis of rotation R of the turning spreader drum 10, with the respective axes of rotation 24.1, 24.2 running outside the central longitudinal axes of the receiving recesses 141 and 142 of the article segments 14.1, 14.2. This means that the axes of rotation 24.1, 24.2 of the respective article segments 14.1, 14.2 are mounted eccentrically.

[0045] After the transversely axially arranged rod-shaped articles are received in the receiving recesses 141, 142 of the article segments 14.1, 14.2 of the two rows R1, R2, the article segments 14.1, 14.2 are moved in opposite directions to each other, i.e. away from each other to the outside, whereby the received rod-shaped articles are turned over while the drum body 12 is rotated.

[0046] After a 180° rotation of the article segments 14.1, 14.2, or of the rod-shaped articles arranged thereon on the rotating-spreading drum 10, the distance between the mutually facing head ends of the rotated rod-shaped articles is greater than the longitudinal axial distance between the opposite head ends when or after the rod-shaped articles are received in the receiving recesses 141, 142. Thus, during the rotation of the drum body 12, due to the simultaneous rotation of the article segments 14.1, 14.2 about their respective axes of rotation 24.1, 24.2, a spreading or longitudinal axial spacing of the received rod-shaped articles is also carried out. After the article segments 14.1, 14.2 have been turned by 180°, the turned rod-shaped articles are arranged in two rows transversely one behind the other on the turning-spreading drum 10, so that the turned and transversely one behind the other rod-shaped articles are removed from the receiving recesses 141, 142 of the article segments 14.1, 14.2 are transferred to a subsequent conveyor drum and its receiving troughs in two rows, so that on the subsequent conveyor drum the turned and transferred as well as longitudinally axially spread or spaced rod-shaped articles are conveyed transversely axially on the subsequent conveyor drum.

[0047] In Fig. 2 The diagram schematically shows the structure of a gearbox for rotating the article segments 14.1 and 14.2 of the two rows R1 and R2. For the sake of clarity, further elements of the reversing spreading drum 10 have been omitted.

[0048] Inside the drum body 12 of the reversing spreader drum 10, two spaced-apart end cams 16.1, 16.2 are formed. The end cams 16.1, 16.2 are fixed in position relative to the rotating drum body 12 inside the reversing spreader drum 10.

[0049] The end cams 16.1, 16.2 each have cam cams 17.1, 17.2, which interact with cam rollers 18.1, 18.2, each connected to a rack 20.1, 20.2. The racks 20.1, 20.2 are aligned parallel to the axis of rotation R of the turning spreader drum 10 and are linearly movable independently of each other by means of the cam cams 17.1, 17.2. The individual racks 20.1, 20.2 have teeth at their ends that engage with a toothed shaft of a pinion shaft 22.1, 22.2. The pinion shafts 22.1, 22.2 are connected on their outer sides to the article segments 14.1, 14.2 of the two rows R1, R2. The pinion shafts 22.1, 22.2 are each rotatable about the radially aligned axes of rotation 24.1, 24.2 by a linear movement of the racks 20.1, 20.2.

[0050] The rack 20.1 is in the embodiment in Fig. 2The rack 20.2 engages with the pinion shaft 24.1 from the rear, while the rack 20.2 engages with the pinion shaft 22.2 from the front. The radial distance of the rack 20.1 to the axis of rotation R is smaller than the radial distance of the horizontally oriented rack 20.2 to the axis of rotation R. The racks 20.1 and 20.2 are linearly movable parallel to the axis of rotation R. The cam rollers 18.1 and 18.2, connected to the racks 20.1 and 20.2, roll along the respective cam tracks 17.1 and 17.2 of the face cams 16.1 and 16.2, creating a mechanism for rotating the article segments 14.1 and 14.2. When the drum body 12 is rotated, a stroke of the associated racks 20.1, 20.2 is executed due to the front cams 16.1, 16.2.

[0051] The cam rollers 18.1, 18.2 are attached to the racks 20.1, 20.2 and are each pressed outwards against the respective cam cam 17.1, 17.2 by compression springs 26.1, 26.2. This allows the cam rollers 18.1, 18.2 to follow the respective cam cam 17.1, 17.2 of the end cams 16.1, 16.2. Furthermore, the racks 20.1, 20.2, which serve as drive rods for the article segments 14.1, 14.2 and their receiving recesses 141, 142, engage with the pinion shafts 22.1, 22.2 for the article segments 14.1, 14.2. During the rotation of the drum body 12, the racks 20.1, 20.2 independently execute a linear stroke along the axis of rotation R, such that the stroke of the racks 20.1 and 20.2 respectively sets the respective cooperating pinion shaft 22.1, 22.2 into rotation about the respective axis of rotation 24.1, 24.2. The article segments 14.1, 14.2 are rigidly connected to the respective pinion shafts 22.1, 22.2. Therefore, when the pinion shafts 22.1 and 22.2 rotate, the article segments 14.1 and 14.2 are rigidly connected to the respective pinion shafts 22.1, 22.2.22.2 a pivoting or rotating movement of the article segments 14.1,14.2 about the axis of rotation 24.1 or 24.2 is carried out.

[0052] A rotation of the pinion shafts 22.1 and 22.2 about their respective axis of rotation 24.1 and 24.2 by 180° is achieved by ensuring that the stroke length of the respective racks 20.1, 20.2 is half the pinion circumference of the pinion shaft 22.1, 22.2, which interact with the rack 20.1, 20.2.

[0053] During or upon the transfer of rod-shaped articles into the receiving troughs of article segments 14.1, 14.2 from a preceding conveyor drum or to a subsequent conveyor drum, the slope of the cam profiles 17.1, 17.2 is zero. After the discharge of rod-shaped products to a subsequent conveyor drum, the article segments 14.1, 14.2 pivot back. The spring force of the compression springs 26.1, 26.2 presses the racks 26.1, 26.2 against the cam profiles 17.1, 17.2.

[0054] The curve cams 17.1, 17.2 of the end curves 16.1, 16.2 are designed such that the curve strokes or the stroke movements of the racks 20.1, 20.2 occur in the same direction in order to effect an opposite pivoting direction of the pinion shafts 22.1, 22.2 or their associated article segments 14.1, 14.2 which interact with the stroke movement of the racks 20.1, 20.2.

[0055] In Fig. 3 Figure 1 shows a cross-section through a pinion shaft 22.1 of the reversing spreader drum 10. The pinion shaft 22.1 is rotatably mounted in the drum body 12 by means of a deep groove ball bearing 28 designed as a fixed bearing and a needle bearing 30 designed as a floating bearing. To prevent, for example, the ingress of dust, corresponding shaft seals 32 are provided on the underside and the top side of the pinion shaft 22.1.

[0056] At the in Fig. 3The pinion shaft 22.2 shown engages with the rack 20.2. The second rack 20.1 for the adjacent pinion shaft 22.1 is not engaged with the pinion shaft 22.2, but with the pinion shaft 22.1, which is not shown here.

[0057] As from Fig. 3 As can be seen, the racks 20.1 and 20.2 are arranged at different radial distances from the axis of rotation R. The direction of movement of the racks 20.1 and 20.2 is perpendicular to the plane of the drawing. The pinion shafts 22.1 and 22.2 are hollow inside, so that within a conveying range, the pinion shafts 22.1 and 22.2 can be subjected to a vacuum, with the vacuum being applied in the receiving recesses 141 and 142 of the article segments 14.1 and 14.2, respectively. This holds the rod-shaped articles in the receiving recesses 141 and 142 of the article segments 14.1 and 14.2.

[0058] When the inverted rod-shaped articles are transferred to a subsequent conveyor drum, the negative pressure at the receiving recesses 141, 142 of the article segments 14.1, 14.2 is switched off. Reference symbol list

[0059] 10 Reversing spreader drum 12 Drum body 14.1, 14.2 Article segments 16.1, 16.2 End curve 17.1, 17.2 Curve cam 18.1, 18.2 Curve track 20.1, 20.2 Rack 22.1, 22.2 Pinion shaft 24.1, 24.2 Pivot axis 26.1, 26.2 Compression spring 28 Deep groove bearing 30 Needle bearing 32 Shaft seal RRotation axis R1row R2row

Claims

1. A conveying drum (10) of the tobacco-processing industry having an, in particular cylindrical, drum body (12) which is rotatable or driven in rotation about an axis of rotation (R), wherein two rows, arranged one next to the other, of receiving troughs (141, 142) arranged one behind the other for rod-shaped items of the tobacco-processing industry are provided in the circumferential direction of the drum body (12), wherein the receiving troughs (141, 142) of each row in each case can be swiveled or are swiveled about a swivel axis (24.1, 24.2) oriented radially with respect to the axis of rotation (R), wherein several receiving troughs (141, 142) of each row are in each case formed on a segment body (14.1, 14.2) which can be swiveled about the swivel axis (24.1, 24.2), wherein the receiving troughs (141, 142) of each row can be moved or are moved independently of one another in each case by means of a movement bar (20.1, 20.2) which is oriented and linearly movable in parallel with the axis of rotation (R) of the conveying drum (10) and which is coupled to the relevant segment body (14.1, 14.2), in particular in the case of simultaneous rotation of the conveying drum (10) about the axis of rotation (R).

2. The conveying drum (10) according to claim 1, characterized in that the linearly movable movement bars (20.1, 20.2) for the respective receiving troughs (141, 142) in each case can be moved or are moved by means of a stroke slot (17.1, 17.2).

3. The conveying drum (10) according to claim 2, characterized in that the receiving troughs (141, 142) are arranged between the stroke slots (17.1, 17.2) for both rows with respect to the axis of rotation (R) of the conveying drum (10) and / or in that the movement bars (20.1, 20.2) for two receiving troughs (141, 142) of both rows, which troughs are arranged one next to the other in the longitudinal extension of the conveying drum (10), are at a different radial distance from the axis of rotation (R) of the conveying drum (10).

4. The conveying drum (10) according to claim 2 or 3, characterized in that the stroke slots (17.1, 17.2) in each case have a curved stroke for the movement bars (20.1, 20.2), wherein the respective curved strokes of the stroke slots (17.1, 17.2) are designed such that the movement bars (20.1, 20.2) perform a movement in the same direction simultaneously or in a temporally offset manner when the drum body (12) rotates and / or the movement bars (20.1, 20.2) perform stroke movements of the same magnitude or of different magnitudes simultaneously or in a temporally offset manner when the drum body (12) rotates.

5. The conveying drum (10) according to any one of claims 1 to 4, characterized in that, during a complete revolution of the drum body (12) by 360°, the receiving troughs (141, 142) of each row are swiveled from a starting position by 180° and, after reaching a swivel position of 180°, are swiveled back into the starting position.

6. The conveying drum (10) according to any one of claims 1 to 5, characterized in that the movement bars (20.1, 20.2) are designed as toothed racks, wherein the toothed racks cooperate in each case with a pinion shaft (22.1, 22.2) for the receiving troughs (141, 142).

7. The conveying drum (10) according to claim 6, characterized in that the pinion shafts (22.1, 22.2) of the receiving troughs (141, 142) can be swiveled about the relevant swivel axis (24.1, 24.2) of the receiving troughs (141, 142) and / or in that the pinion shafts (22.1, 22.2) for the receiving troughs (141, 142) are swivelably mounted in each case by means of a ball bearing (28), in particular a deep-groove ball bearing, and by means of a needle bearing (30).

8. The conveying drum (10) according to any one of claims 1 to 7, characterized in that the movement bars (20.1, 20.2) for the receiving troughs (141, 142) are or can be subjected to a force, in particular counter to the stroke slot (17.1, 17.2) for the movement bars (20.1, 20.2), in each case by means of a compression spring (26.1, 26.2) and / or in that the respective movement bars (20.1, 20.2) for a pair of pinion shafts (22.1, 22.2) arranged adjacently to one another along the axis of rotation (R) of the conveying drum (10) are arranged on different sides of the pinion shafts (22.1, 22.2).

9. The conveying drum (10) according to any one of claims 1 to 8, characterized in that the receiving troughs (141, 142) arranged one next to the other in the longitudinal extension of the conveying drum (10) are swiveled or can be swiveled in the same direction when rotated about their respective swivel axes (24.1, 24.2).

10. The conveying drum (10) according to any one of claims 1 to 9, characterized in that the movement bars (20.1, 20.2) for a pair of receiving troughs (141, 142) arranged one next to the other in the longitudinal extension of the conveying drum (10) can be moved or are moved independently of one another, preferably by means of the relevant stroke slot (17.1, 17.2).

11. The conveying drum (10) according to any one of claims 1 to 10, characterized in that the receiving troughs (141, 142) are arranged on the respective segment bodies (14.1, 14.2) such that the central longitudinal axes of the receiving troughs (141, 142) extend outside the swivel axis (24.1, 24.2) of the segment bodies (14.1, 14.2).

12. The conveying drum (10) according to any one of claims 1 to 11, characterized in that the conveying drum (10) is designed as a turning-spreading drum (10).

13. A machine of the tobacco-processing industry, in particular a filter segment production machine, for producing rod-shaped items of the tobacco-processing industry, in particular multi-segment filters or heat-not-burn products, having a conveying drum (10) according to any one of claims 1 to 12.

14. A method for conveying rod-shaped items of the tobacco-processing industry, in particular multi-segment filters or heat-not-burn products, wherein pairs of rod-shaped items that are arranged coaxially with respect to one another are conveyed along a conveying path transversely to the axial direction on a first conveying element, in particular a conveying drum (10), in two rows, formed one next to the other, of rod-shaped items arranged one behind the other transversely to the axial direction, wherein the rod-shaped items of both rows are transferred from the first conveying element to a conveying drum (10) according to any one of claims 1 to 12, wherein, when the rod-shaped items are being conveyed on the conveying drum (10) and after they have been swiveled by 180°, the ends, arranged toward one another and opposite one another, of the rod-shaped items of both rows are arranged at a greater or lesser distance from one another along the longitudinal axis compared with the distance along the longitudinal axis between the ends, facing one another and opposite one another, of the rod-shaped items of both rows prior to the swiveling of the rod-shaped items on the conveying drum (10).

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