EP4114210B1 - Conveying drum for the tobacco-processing industry - Google Patents

Description

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

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

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.

In machines in the tobacco processing industry, especially filter attachment 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.

The conveying of the aforementioned rod-shaped objects during the manufacture of cigarettes, filters and filter cigarettes or so-called heat-not-burn products or e-cigarettes is generally carried out in modern production machines in the tobacco processing industry using conveyor drums, the outer surface or drum body of which is provided with grooves or receiving troughs for receiving the rod-shaped objects for the transverse-axial conveying of rod-shaped objects (cigarettes, filter rods or filter plugs, filter cigarettes). The receiving troughs for the rod-shaped articles have a trough base.

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

Furthermore, it is known in the prior art that devices for turning rod-shaped articles, in particular cigarettes, are provided with 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 attachment machines. In a filter attachment machine, filter cigarettes are produced as rod-shaped articles, whereby 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. The rod-shaped articles or filter cigarettes are then further processed in the filter attachment machines with uniformly aligned filters, whereby the filter cigarettes conveyed in two rows are turned by means of a turning device so that the filter cigarettes in one row are turned by 180° around a transverse axis running perpendicular to the longitudinal axis. Here, the turned filter cigarettes are arranged on a conveyor drum between two non-turned filter cigarettes in a free receiving trough of the conveyor drum, so that after the turning process a row of filter cigarettes is formed.

In order to turn the filter cigarettes, so-called cone turners are also used, among other things. For the turning process, the two rows of opposite filter cigarettes must be spread longitudinally on a spreading drum before being turned, with a row of the filter cigarettes or rod-shaped articles then being transferred to the cone turning drums, on which the rod-shaped articles describe a conical path, in order to then be arranged between the non-turned filter cigarettes on the conveyor drum on which the non-turned rod-shaped articles are conveyed.

For example, in DE 34 45 945 A1 (corresponds US$4,676,360 ), EP 0 627 175 B1 and DE 199 20 760 A1 Devices for turning rod-shaped articles are disclosed. In addition, DE 34 45 575 A1 A method for spacing and turning two coaxial cigarette lengths on a filter fitting machine is described.

In addition, EP 2 904 913 A1 discloses a turning drum, wherein turning segments with two receptacles for rod-shaped articles are arranged in the circumferential direction of the drum. Furthermore, DE 1 178 756 B a trough drum, the trough drum having a row of rigid troughs and another row with rotating receptacles. Furthermore, DE 1 782 864 A1 a conveyor drum in the form of an alignment head is described, wherein the alignment head has gripping elements. Each of the gripping elements performs a rotation of 180° during the rotation of the alignment head.

The object of the invention is to enable a conveyor arrangement for conveying rod-shaped articles to easily turn several rows of rod-shaped articles on a conveyor drum, in particular several rod-shaped articles with different format lengths should be promoted and used regardless of their format.

This object is achieved by a conveyor drum for tobacco processing, as defined in detail in claim 1, with a drum body that can be rotated about a rotation axis or is driven in rotation, in particular a cylinder-shaped drum, wherein two 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 arranged next to one another in the longitudinal extension of the conveyor drum are each rotatable or rotated about an axis of rotation aligned radially to the axis of rotation, preferably independently of one another, wherein the receiving troughs of each row arranged next to one another in the longitudinal extension of the conveyor drum are each movable or moved independently of one another by means of a movement rod that is aligned parallel to the axis of rotation of the conveyor drum and can be moved linearly and is coupled to the respective receiving trough, in particular while the conveyor drum is rotating about the axis of rotation at the same time.

The invention is based on the idea that in the conveyor drum, the rod-shaped articles in the receiving troughs of two adjacently conveyed and arranged rod-shaped articles, such as filter plugs, filter cigarettes, multi-segment filters or, in particular, multi-segment heat-not-burn products, are rotated or turned during the conveying on the conveyor drum, wherein at the same time it is also possible for the longitudinal axial distance between two opposite head ends of the rod-shaped articles of the two rows to be increased or reduced when the articles are received on the conveyor drum in comparison to the opposite head ends of the rotated or turned pairs of rod-shaped articles of the two rows when the rod-shaped articles to a subsequent conveyor drum. This makes it possible for the conveyed rod-shaped articles to be turned on the conveyor drum and for the turned articles of the two rows to be spread apart from one another when they are delivered to a subsequent conveyor drum. For this purpose, in order to move the rotatable receiving troughs of the conveyor drum, the axes of rotation of two receiving troughs of the two rows arranged next to one another are aligned parallel to one another, with the axes of rotation being aligned in the radial direction to the axis of rotation of the conveyor drum. Within the scope of the invention, it can be provided that the linearly movable movement rods for the receiving troughs, which are aligned parallel to the axis of rotation of the conveyor drum, are moved independently of one another or simultaneously.

A movement rod is provided for each axis of rotation of the receiving troughs to move the receiving troughs. The movement of the individual movement rods can be either synchronous or asynchronous.

For this purpose, a further development of the conveyor drum provides that the linearly movable movement rods for the respective receiving troughs can be moved or are moved by means of a lifting link. This creates a movement of the movement rods and thus also a rotation of the receiving troughs around the rotation axes in a simple mechanical manner.

For this purpose, according to a further aspect, it is provided that the receiving troughs are arranged between the lifting guides for the two rows with respect to the axis of rotation of the conveyor drum.

In addition, a further development of the conveyor drum is characterized in that the movement rods for two receiving troughs of the two rows arranged next to each other in the longitudinal extension of the conveyor drum have a different radial distance from the axis of rotation of the conveyor drum.

According to an advantageous embodiment, the conveyor drum is further provided with the lifting guides each having a curved stroke for the movement rods, the respective curved strokes of the lifting guides being designed in such a way that the movement rods simultaneously or staggered in time when the drum body rotates carry out a movement in the same direction and/or the movement rods simultaneously or staggered in time when the drum body rotates carry out lifting movements of the same or different sizes. This allows flexible turning and spreading of the rod-shaped articles from two rows of rod-shaped articles. Before being transferred to the conveyor drum, the rod-shaped articles are aligned in two rows transversely axially one behind the other and are transferred to the conveyor drum in two rows. When the rod-shaped articles are transferred from the conveyor drum to a subsequent conveyor drum after the rod-shaped articles have been turned or flipped on the conveyor drum, the turned rod-shaped articles are placed in two rows of rod-shaped articles arranged transversely axially one behind the other. Article further promoted.

Within the scope of the invention, one embodiment of the conveyor drum can provide that, by providing a corresponding lifting link, a row of rod-shaped articles on the conveyor drum are rotated or turned, while the other row of receiving troughs is not rotated. In this case, the movement rod does not perform a linear movement, with the corresponding lifting link for this movement rod being a flat circular path.

Furthermore, a design of the conveyor drum is characterized in that during a complete rotation of the drum body by 360°, the receiving troughs of each row are rotated by 180° from an initial position and, after reaching a rotation position of 180°, are rotated back to the initial position.

Furthermore, it is advantageously provided in the conveyor drum that the movement rods are designed as toothed racks, wherein the toothed racks each interact with a pinion shaft for the receiving troughs.

For this purpose, it is advantageously provided that the pinion shafts of the receiving troughs are rotatable about the respective axis of rotation of the receiving troughs.

In particular, according to a further aspect, the pinion shafts for the receiving troughs are each rotatably mounted by means of a ball bearing, in particular a deep groove ball bearing, and by means of a needle bearing.

In addition, it is preferred in one embodiment of the conveyor drum that the movement rods for the receiving troughs are each subjected to a force, in particular against the lifting link for the movement rods, by means of a compression spring. This ensures a secure guidance of the movement rods or their ends, the interact with the lifting mechanism.

Advantageously, according to a further aspect, the respective movement rods for a pair of pinion shafts arranged adjacent to one another along the axis of rotation of the conveyor drum are arranged on different sides of the pinion shafts. This achieves a compact arrangement of the movement rods.

According to a further preferred aspect of the conveyor drum, it is provided that the receiving troughs arranged next to one another in the longitudinal extension of the conveyor drum are rotated or can be rotated in the same direction when rotating about their respective axes of rotation.

Furthermore, the invention is characterized in that the movement rods for a pair of receiving troughs arranged next to one another in the longitudinal extension of the conveyor drum are or are movable independently of one another, preferably by means of the respective lifting link.

Furthermore, in one design of the conveyor drum, it is provided that individual receiving troughs in each row or several receiving troughs in each row are each formed on a segment body that can be rotated about the axis of rotation. Depending on the design, the segment bodies can have just one receiving trough for a rod-shaped article or, in a further design, several receiving troughs for each rod-shaped article. If the segment body is provided with several receiving troughs, the receiving troughs are aligned parallel to one another on the segment body. As a result, during the rotation of the conveyor drum, when the respective segment bodies rotate, several rod-shaped articles are rotated or turned about the respective axis of rotation.

In particular, the design of the conveyor drum is provided that the receiving troughs on the respective segment bodies are arranged in such a way that the central longitudinal axes of the receiving troughs run outside the axis of rotation of the segment bodies. This makes it possible that during the conveyance of the rod-shaped articles and when the segment bodies rotate about the axes of rotation, the rod-shaped articles are turned on the conveyor drum and at the same time spread apart from one another in the longitudinal axial direction.

In particular, the conveyor drum is designed as a turning spreading drum.

Furthermore, the object is achieved by a machine of the tobacco processing industry, in particular a filter segment manufacturing machine, for producing rod-shaped articles of the tobacco processing industry, in particular multi-segment filters or heat-not-burn products, which is designed with a conveyor drum according to the invention, as described above. To avoid repetition, express reference is made to the above statements.

Furthermore, the object is achieved by a method for conveying rod-shaped articles of the tobacco processing industry, in particular multi-segment filters or heat-not-burn products, wherein pairs of rod-shaped articles arranged coaxially to one another along a conveying path are conveyed transversely on a first conveying element, in particular a conveying drum, in two rows formed next to one another of rod-shaped articles arranged transversely one behind the other, wherein the rod-shaped articles of both rows are transferred from the first conveying element to a conveying drum according to the invention, wherein during the conveying of the rod-shaped articles on the conveying drum, the rod-shaped articles are each rotated by 180° and, after their rotation, are transferred to a second conveying element, in particular a second conveying drum, wherein during the conveying of the rod-shaped articles on the conveying drum and after rotation by 180°, the mutually arranged and opposite ends of the rod-shaped articles are transferred from both Rows are arranged with a smaller or larger longitudinal axial distance from one another compared to the longitudinal axial distance of the facing and opposite 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, express reference is made to the above statements.

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

Fig. 1

schematisch eine perspektivische Ansicht einer Wende-Spreiztrommel;

Fig. 2

schematisch eine Ansicht von Getriebeantrieben von drehbaren Artikelsegmenten der Wende-Spreiztrommel (vgl. Fig. 1) und

Fig. 3

schematisch ausschnittsweise einen Querschnitt durch eine Ritzelwelle für ein Artikelsegment der Wende-Spreiztrommel (vgl. Fig. 1).

The invention is described below without limiting the general inventive concept using exemplary embodiments with reference to the drawings, whereby express reference is made to the drawings for all details of the invention not explained in more detail in the text. They show:

Fig.1

schematically a perspective view of a turning spreading drum;

Fig. 2

schematic view of gear drives of rotatable article segments of the turning spreading drum (cf. Fig.1 ) and

Fig. 3

schematic section of a cross-section through a pinion shaft for an article segment of the turning spreading drum (cf. Fig.1 ).

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

In the drawings, identical or similar elements and/or parts are provided with the same reference numbers, so that a repeated presentation is dispensed with in each case.

In Fig.1 A perspective view of a turning spreading drum 10 according to the invention is shown schematically. The turning spreading drum 10 is part of a machine for producing rod-shaped articles in the tobacco processing industry, such as multi-segment filters or rod-shaped heat-not-burn products. In addition, the turning spreading drum 10 can also be part of a conveyor arrangement for conveying rod-shaped articles, for example a filter attachment machine.

The turning spreading drum 10 has an outer, cylindrical drum body 12, which is driven to rotate about a rotation axis 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 arranged one behind the other in the circumferential direction are arranged in two rows R1, R2. The article segments 14.1, 14.2 each have receiving troughs 141, 142 on their outside, which are spaced apart and can be subjected to negative pressure. The rod-shaped articles are arranged in the receiving troughs 141, 142 when they are transferred from a conveyor drum arranged upstream in the conveying direction of rod-shaped articles. The rod-shaped articles, such as multi-segment filters, are conveyed in two rows by the upstream conveyor drum in two rows next to one another and arranged transversely axially one behind the other.

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 spreading drum 10. The article segments 14.1 arranged in the longitudinal extension of the turning spreading drum 10 and next to the article segments 14.1 of the row R1 Article segments 14.2 form a second row R2 of article segments 14.2. The article segments 14.1, 14.2 of the rows R1, R2 can each be rotated about a rotation axis 24.1, 24.2. The respective rotation axes 24.1, 24.2 of the article segments 14.1 and 14.2 are in Fig.1 indicated by dashed lines. The rotation axes 24.1, 24.2 of the article segments 14.1, 14.2 are aligned radially outward relative to the rotation axis R of the turning spreading drum 10, with the respective rotation axes 24.1, 24.2 running outside the central longitudinal axes of the receiving troughs 141 and 142 of the article segments 14.1, 14.2. This means that the rotation axes 24.1, 24.2 of the respective article segments 14.1, 14.2 are mounted eccentrically.

After the rod-shaped articles arranged transversely one behind the other have been picked up in the receiving troughs 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 one another, i.e. away from one another and outwards, whereby the picked up rod-shaped articles are turned while the drum body 12 rotates at the same time.

After turning the article segments 14.1, 14.2 or the rod-shaped articles arranged thereon by 180° on the turning-spreading drum 10, the distance between the mutually facing head ends of the turned rod-shaped articles is greater than the longitudinal axial distance between the opposite head ends during or after receiving the rod-shaped articles in the receiving troughs 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 the respective axes of rotation 24.1, 24.2, the received rod-shaped articles are also spread or spaced apart longitudinally. After turning the article segments 14.1, 14.2 by 180°, the turned rod-shaped articles are arranged in two rows transversely axially one behind the other on the turning-spreading drum 10, so that the turned and transversely axially arranged rod-shaped articles are removed from the receiving troughs 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 the turned and transferred as well as longitudinally axially spread or spaced rod-shaped articles are conveyed transversely axially on the subsequent conveyor drum.

In Fig.2 A schematic representation of the structure of a gear for rotating the article segments 14.1, 14.2 of the two rows R1, R2 is shown. For reasons of clarity, further elements of the turning spreading drum 10 have been omitted from the illustration.

Two spaced-apart front curves 16.1, 16.2 are formed inside the drum body 12 of the turning spreading drum 10. The front curves 16.1, 16.2 are arranged in a fixed position relative to the rotating drum body 12 inside the turning spreading drum 10.

The front curves 16.1, 16.2 each have curve guides 17.1, 17.2 that interact with curve rollers 18.1, 18.2, which are each connected to a rack 20.1, 20.2. The racks 20.1, 20.2 are aligned parallel to the rotation axis R of the turning spreading drum 10 and can be moved linearly independently of one another by means of the curve guides 17.1, 17.2. The individual racks 20.1, 20.2 are formed at the end with teeth that engage in a toothed shaft of a pinion shaft 22.1, 22.2. The pinion shafts 22.1, 22.2 are connected on the outside to the article segments 14.1, 14.2 of the two rows R1, R2. The pinion shafts 22.1, 22.2 can each rotate about the radially aligned axes of rotation 24.1, 24.2 by a linear movement of the racks 20.1, 20.2.

The rack 20.1 is in the embodiment in Fig.2 in engagement with the pinion shaft 24.1 from the rear, while the rack 20.2 is in engagement with the pinion shaft 22.2 from the front. The radial distance the rack 20.1 to the rotation axis R is smaller than the radial distance of the horizontally aligned rack 20.2 to the rotation axis R. The racks 20.1, 20.2 can be moved linearly parallel to the rotation axis R. By rolling the cam rollers 18.1, 18.2 connected to the racks 20.1, 20.2 on the respective cam slides 17.1, 17.2 of the front curves 16.1, 16.2, a gear is provided for rotating the article segments 14.1, 14.2. When the drum body 12 rotates, a stroke of the connected racks 20.1, 20.2 is carried out due to the front curves 16.1, 16.2.

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 link 17.1, 17.2 by compression springs 26.1, 26.2. As a result, the cam rollers 18.1, 18.2 follow the respective cam link 17.1, 17.2 of the front curves 16.1, 16.2. Furthermore, the racks 20.1, 20.2, which are designed as movement rods for the article segments 14.1, 14.2 or their receiving recesses 141, 142, engage in 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 rotation axis R, so that the stroke of the racks 20.1 or 20.2 causes the pinion shaft 22.1, 22.2 interacting with them to rotate 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. As a result, when the pinion shafts 22.1 or 22.2 rotate, the article segments 14.1, 14.2 perform a pivoting or rotational movement about the axis of rotation 24.1 or 24.2.

A rotation of the pinion shafts 22.1 and 22.2 by 180° about the respective rotation axis 24.1 and 24.2 is achieved in 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 each interact with the rack 20.1, 20.2.

During or when transferring rod-shaped articles into the receiving troughs of the article segments 14.1, 14.2 from a preceding conveyor drum or to a subsequent conveyor drum, the gradient of the curved guides 17.1, 17.2 is zero. After rod-shaped products have been transferred to a subsequent conveyor drum, the article segments 14.1, 14.2 each swing back. The spring force of the compression springs 26.1, 26.2 presses the racks 26.1, 26.2 against the curved guides 17.1, 17.2.

The curve links 17.1, 17.2 of the front curves 16.1, 16.2 are designed in such a way that the curve strokes or the lifting movements of the racks 20.1, 20.2 take place in the same direction in order to bring about an opposite pivoting direction of the pinion shafts 22.1, 22.2 or their associated article segments 14.1, 14.2 which interact with them due to the lifting movement of the racks 20.1, 20.2.

In Fig.3 a cross-section through a pinion shaft 22.1 of the turning spreading drum 10 is shown in detail. 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. In order to prevent dust from penetrating, for example, corresponding shaft seals 32 are provided on the underside and the top of the pinion shaft 22.1.

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

As from Fig.3 As can be seen, the racks 20.1, 20.2 are arranged at a different radial distance from the rotation axis R. The direction of movement of the racks 20.1, 20.2 is perpendicular to the plane of the drawing. The pinion shafts 22.1 and 22.2 are hollow on the inside, so that within a conveying area the pinion shafts 22.1 and 22.2 can be subjected to negative pressure, whereby the negative pressure is applied in the receiving recesses 141, 142 of the article segments 14.1, 14.2. As a result, the rod-shaped articles are held in the receiving recesses 141, 142 of the article segments 14.1 and 14.2.

When the turned rod-shaped articles are delivered to a subsequent conveyor drum, the negative pressure at the receiving troughs 141, 142 of the article segments 14.1, 14.2 is switched off.

List of reference symbols

10

Turning spreading drum

12

Drum body

14.1, 14.2

Article segments

16.1, 16.2

Forehead curve

17.1, 17.2

Curve backdrop

18.1, 18.2

Curved track

20.1, 20.2

Rack and pinion

22.1, 22.2

Pinion shaft

24.1, 24.2

Rotation axis

26.1, 26.2

Compression spring

28

Deep groove bearings

30

Needle bearing

32

Shaft seal

R

Rotation axis

R1

Row

R2

Row

Claims (15)

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 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, which troughs are arranged one next to the other in the longitudinal extension of the conveying drum (10), 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 the receiving troughs (141, 142) of each row, which troughs are 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, in particular in the case of simultaneous rotation of the conveying drum (10) about the axis of rotation (R), 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 receiving trough (141, 142).
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), wherein the receiving troughs (141, 142) are arranged between the stroke slots (17.1, 17.2) for both rows, in particular with respect to the axis of rotation (R) of the conveying drum (10).
3. The conveying drum (10) according to claim 1 or 2, characterized 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), wherein, in particular, 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 wherein, in particular, 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).
7. The conveying drum (10) according to any one of claims 1 to 6, 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).
8. The conveying drum (10) according to any one of claims 1 to 7, characterized 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 individual receiving troughs (141, 142) of each row or 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).
12. The conveying drum (10) according to claim 11, 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).
13. The conveying drum (10) according to any one of claims 1 to 12, characterized in that the conveying drum (10) is designed as a turning-spreading drum (10).
14. A machine of the tobacco-processing industry, in particular a filter segment production machine, for producing rod-shaped articles 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 13.
15. A method for conveying rod-shaped articles of the tobacco-processing industry, in particular multi-segment filters or heat-not-burn products, wherein pairs of rod-shaped articles 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 articles arranged one behind the other transversely to the axial direction, wherein the rod-shaped articles of both rows are transferred from the first conveying element to a conveying drum (10) according to any one of claims 1 to 13, wherein, when the rod-shaped articles are being conveyed on the conveying drum (10), the rod-shaped articles are in each case swiveled by 180° and, after being swiveled, are transferred to a second conveying element, in particular a second conveying drum (10), wherein, when the rod-shaped articles 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 articles 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, arranged toward one another and opposite one another, of the rod-shaped articles of both rows prior to the swiveling of the rod-shaped articles on the conveying drum (10).

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