EP3047738B1 - Transport drum for the tobacco processing industry - Google Patents

Description

The invention relates to a conveyor drum of the tobacco-processing industry, wherein in the circumferential direction of the conveyor drum pivotable lever arms are provided, wherein the lever arms each have one or more receptacles for rod-shaped articles, wherein the lever arms are pivotable by means of a pivoting gate, wherein the lever arms by means of the pivoting gate in a Transfer area for the rod-shaped article between a receiving area for receiving rod-shaped articles in the receptacles and a delivery area for discharging the rod-shaped articles controlled from the recordings during rotation of the conveyor drum are movable.

Furthermore, the invention relates to a drum assembly for Queraxialen conveying rod-shaped articles and a machine of the tobacco processing industry, in particular a machine for producing multi-segment filters.

In the present context, rod-shaped articles of the tobacco-processing industry are understood to mean articles which, in single-layer or multi-layer series, are conveyed by means of suction air on conveyors, such as e.g. held on conveyor drums, in filter or cigarette making machines and promoted by these in a transfer area. Such articles are filter cigarettes, cigars, cigarillos as well as filter rods, filter segments, etc. If, for the sake of simplicity, we now speak of cigarettes or filter rods, then the same applies analogously to other articles to be conveyed of the aforementioned type, such as e.g. Filter segments or filter segment groups.

In cigarette machines, cigarettes are held in the receiving cavities of the drums transversely to their longitudinal axial orientation on conveyor drums, which are primarily drums of cigarette making machines or filter tying machines.

In addition, it is known that in drum arrangements for the transverse axial conveying of rod-shaped articles conveyor drums are used, wherein so-called accelerator drums are used due to process conditions along the conveying path of the rod-shaped articles. Here, accelerator drums are used, which have pivotable lever arms, so that upon rotation of the conveyor drums and the pivoting of the lever arms an acceleration is exerted on the conveyed rod-shaped article, so that an accelerated transfer of the rod-shaped article takes place at the subsequent conveyor drums.

In addition, it is known that accelerator drums are also used in so-called multi-segment filter production machines become. For example, in EP 2 653 044 A2 discloses an accelerator drum in a multi-segment filter group assembler.

Furthermore, in DE-A-10 2011 007 428 an arrangement for conveying rod-shaped articles of the tobacco-processing industry described, wherein a conveyor drum has pivotable arms, which are pivoted about their respective pivot axes by means of a pivoting backdrop.

It is also in EP-A-1 287 753 discloses a transfer device for transferring rod-shaped articles of the tobacco processing industry, wherein the transfer device comprises pairs of receiving pivot arms for the rod-shaped articles.

Furthermore, in US-A-3,286,809 a staggering drum shown on the removed from a magazine filter rods are cut into filter pieces.

Based on this prior art, the object of the invention is to make the transfer of rod-shaped articles between conveyor drums for Queraxialen conveying the rod-shaped article variable.

This object is achieved by a conveyor drum of the tobacco-processing industry, wherein in the circumferential direction of the conveyor drum pivotable lever arms are provided, wherein the lever arms each have one or more receptacles for rod-shaped articles, wherein the lever arms are pivotable by means of a pivoting gate, wherein the lever arms by means of the pivoting gate in a transfer area for the rod-shaped article between a receiving area for receiving rod-shaped articles in the receptacles and a delivery area for dispensing the rod-shaped articles from the recordings during rotation of the conveyor drum are controlled movable, which is further developed in that the pivoting gate for the lever arms has at least two different gate sections for the delivery area, so that according to the type of rod-shaped article to be conveyed a gate section is effective in the delivery area, whereby the rod-shaped articles are given different speed depending on the effective gate section to the subsequent conveyor organ when delivering the article, wherein a first gate section for or a first movement of the lever arms in promoting rod-shaped articles of a first type and a second link section for or a second movement of the lever arms in promoting rod-shaped articles of a second type, which differs from the rod-shaped articles of the ers differ th, are provided in the transfer area, and wherein the pivoting gate is adjustable, so that, when selectively promoting the rod-shaped article of the first kind at least in the delivery area of the first link section of the pivoting gate is effective or at least promoting the rod-shaped article of the second kind in the delivery region of the second link section is effective, wherein the lever arms have at least one or more, in particular two, rollers which cooperate with the pivoting gate during rotation of the conveyor drum to perform a pivotal movement of the lever arms, and wherein the conveyor drum is formed as an accelerator drum.

The invention is based on the idea that a conveyor drum has a pivoting gate for lever arms, wherein the pivoting gate at least two different gate sections for the delivery area , so that according to the type of rod-shaped article to be conveyed, a gate section is effective in the delivery area, whereby the rod-shaped articles are delivered at different speeds to the subsequent conveyor element at the delivery of the articles.

By the respective effective gate section in the delivery area, the rod-shaped articles are optionally accelerated at different speeds on the drum depending on the type. For example, the rod-shaped articles or article groups of a first type to be conveyed and the rod-shaped articles or article groups of a second type differ in the length of the articles or the article group.

If e.g. promoted on the conveyor drum short rod-shaped articles or groups of products with a predetermined article group length and accelerated by the first link section in the delivery area due to the effective first link section, so is in a format change and subsequent promotion of rod-shaped articles or groups of articles with a longer article length by the set, second gate section accelerated less in the delivery area delivered with a higher compared to the shorter article groups of the first type conveying speed to the subsequent conveying member.

The fact that the pivoting link for the lever arms at the same time two different gate sections in or for the delivery area has the conveyor drum, it is possible to swap the first gate section for the delivery area against the second gate section for the delivery area by a simple selective switching in a format change on a machine. In this case, for example, the pivoting gate with the first gate section and the second gate section is rotated and adjusted in a format change in a simple manner, without the entire swing gate must be replaced. The pivoting guide according to the invention remains on the conveyor drum.

This makes it possible to promote different lengths of articles or groups of articles in the receptacles or in the receiving troughs of the conveyor arms provided with lever arms, without a complete replacement of an entire pivoting backdrop must be done. Overall, this achieves a rapid adjustment of the pivoting guide on the conveyor drum, which is preferably designed as an accelerator drum.

In an optional change of the rod-shaped article to be promoted a first type to rod-shaped articles of a second type active in the delivery area of the conveyor drum link sections are exchanged or changed or adjusted, so that when dispensing the rod-shaped article from the receiving troughs to a subsequent conveying member, the rod-shaped Article are delivered at a corresponding conveying speed. Here, the gate sections of the pivoting gate for the delivery area differ such that the conveying speed of the rod-shaped article of the first type due to the movement characteristic of the gate section and the conveying speed of the rod-shaped article of the second type by the movement characteristic of the lever segments through the second gate section are different.

For this purpose, it is provided on a development of the conveyor drum, that in the circumferential direction of the pivoting link, the second link section is formed for the lever arms following the first link section. In the context of the invention, it is possible that the pivoting link has a plurality of link sections, by the respective different delivery speeds in the delivery area or different movement characteristics of the lever arms in the delivery area, i. be achieved in the delivery of the promotional or promoted rod-shaped article to the subsequent conveying member.

In addition, the conveyor drum is characterized in that a gate section of the pivoting gate is designed for the receiving area such that regardless of the set in the delivery area effective first or second gate section of the gate section for the receiving area for receiving the article in the receiving wells is the same or unchanged.

This ensures that when receiving rod-shaped articles of the tobacco-processing industry in the receptacles or receiving cavities of the lever arms of the conveyor drum of the transfer point is unchanged for this purpose. For this purpose, the pivoting gate in the region of the transfer area is designed so that the positions of the conveying members or conveyor drums remain unchanged during a format change. Also, the transfer area or delivery area of rod-shaped articles to a subsequent conveying member remains unchanged.

The lever arms have at least one or more, in particular two, rollers each, which cooperate with the pivoting guide during rotation of the conveyor drum to a pivoting movement to execute the lever arms during rotation of the conveyor drum. The rollers are connected via pivot arms or the like with the lever arms.

In addition, it is preferred for drums that the pivoting link has two juxtaposed guideways, wherein the guideways are formed offset from each other and each one guideway cooperates with a respective roller of a lever arm.

Furthermore, in one embodiment, it is preferred for the conveyor drum that an adjustment mechanism, in particular a pivoting mechanism for the pivoting guide, is provided such that, for a change in the type of the rod-shaped articles to be conveyed, e.g. is exchanged or adjusted in a format change by the adjustment of the effective gate section in the delivery area or is.

Furthermore, the object is achieved by a drum arrangement for the cross-axial conveying rod-shaped articles of the tobacco-processing industry, which is formed with a conveying drum described above. To avoid repetition, reference is expressly made to the above statements.

Furthermore, the object is achieved by a machine of the tobacco-processing industry, in particular a machine for producing multi-segment filters, with a conveying drum described above. For this purpose, the above statements expressly referred.

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 eine perspektivische Ansicht einer als Beschleunigertrommel ausgebildeten Fördertrommel der Tabak verarbeitenden Industrie,

Fig. 2

eine perspektivische Darstellung von Bestandteilen im Inneren der Fördertrommeln von Fig. 1 ohne Trommelkörper,

Fig. 3

schematisch eine Prinzipdarstellung eines bewegbaren Hebelarms der Fördertrommel,

Fig. 4

schematisch ein Ausführungsbeispiel für eine Kontur für eine Schwenkkulisse einer Fördertrommel.

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 schematically a perspective view of a conveyor drum of the tobacco processing industry designed as an accelerator drum,

Fig. 2

a perspective view of components inside the conveyor drums of Fig. 1 without drum body,

Fig. 3

schematically a schematic diagram of a movable lever arm of the conveyor drum,

Fig. 4

schematically an embodiment of a contour for a pivoting backdrop of a conveyor drum.

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 is schematically illustrated as an accelerator drum conveyor drum 10 for the transverse axial conveying of rod-shaped articles, in particular filter rods or multi-segment filter groups represented.

The conveyor drum 10 is in this case part of a schematically designated drum arrangement T, as they are for example in Fig. 1 the European patent application EP 2 653 044 A2 is shown. The in this document in Fig. 1 For example, shown drum assembly has an accelerator drum (reference numeral 50).

Of course, it is possible within the scope of the invention that the in Fig. 1 illustrated conveyor drum 10 is also part of a machine of the tobacco-processing industry for the production of rod-shaped articles.

The conveyor drum 10 has an outer drum body 12, on the outside of which pivotable lever arms 14 are arranged in the circumferential direction. The lever arms 14 are in this case mounted pivotably about a pivot axis. On the outside, the lever arms 14 receiving troughs 16 for rod-shaped articles or groups of items such. B. multi-segment filter groups on. In the context of the invention, it is also possible that a lever arm has a plurality of receiving troughs for a plurality of rod-shaped articles or groups of articles.

During rotation of the conveyor drum, the lever arms 14 perform a pivoting movement. The drum body 12 is further driven by means of a (not shown here) drive and offset in rotation during operation of the conveyor drum 10.

The drum body 12 is rotatable relative to a stationary holding body 18, wherein the holding body 18 is arranged on a machine frame or the like. By appropriate Saugluftbohrungen the receiving troughs 16 of the lever arms 14 are subjected to negative pressure when receiving rod-shaped articles. In this case, a corresponding vacuum is provided in the interior of the drum body 12, wherein the negative pressure is switched by using corresponding control bodies in the interior of the conveyor drum 10.

The swiveling movement of the lever arms 14 takes place by means of a curved track 20 according to the invention which is arranged or formed in the interior of the drum body 12 (cf. Fig. 2 ).

In Fig. 2 the components of the conveyor drum 10 present in the interior of the drum body are shown schematically. Here, a groove-like curved track 20 is formed or arranged on the holding body 18. In particular, the cam track 20 is formed in a cam. This curve track 20 is groove-like formed as a kind of depression on the holding body 18.

Within the cam track 20 engage roller pairs that are connected to the lever arms 14 (see. Fig. 3 ), so that due to the contour of the cam track 20, the lever arms 14 are pivoted about their respective pivot axis upon rotation of the drum body 12.

The curved track 20 is not circular in the circumferential direction and has a plurality of curved sections K1, K2 (see FIG. Fig. 4 ) on. In Fig. 4 is shown schematically a plan view of the contour of a schematic curve track. The curve sections K1 and K2 are hereby curve sections that interact cause one or more roles of the lever arms 14 that the lever arms 14 are pivoted.

In particular, it is provided according to the invention that the curve sections K1, K2 of the cam track 20 are aligned or positioned in the interior of the conveyor drum, so that when dispensing rod-shaped articles from the receptacles 16 of the lever arms 14, the rod-shaped articles experience an acceleration in the discharge point ,

Here, in the delivery area, for example, the curve section K1 is arranged for rod-shaped articles of a first type, so that the rod-shaped articles of a predetermined length are transferred at an increased conveying speed to the subsequent conveyor drum or to the subsequent conveyor element. In a format conversion, the curved track 20 is changed in the interior of the conveyor drum 10, so that in the conveyor drum 10 for the longer rod-shaped article of the second type, the second curve section K2 is arranged in the delivery area of the conveyor drum, so that the longer rod-shaped article of the second type with a other (lower) conveying speed to be passed to the subsequent conveyor.

In the context of the invention, it is also possible in one embodiment that the first curve section K1 is arranged for the longer rod-shaped article in the delivery area, whereby the longer rod-shaped articles are transferred at a lower conveying speed to the subsequent conveyor, and the second curve section K2 for the shorter rod-shaped article is placed in the delivery area, whereby the shorter rod-shaped articles are transferred at a higher conveying speed to the subsequent conveyor.

In Fig. 2 is schematically only a curve section K1 visible due to the perspective view.

Depending on the length of the rod-shaped articles to be conveyed, the curved track 20 with the curve sections K1 and K2 for the delivery area can optionally be arranged such that a corresponding curve section K1 or K2 is arranged in the delivery area. In this case, in the delivery region of the conveyor drum, only one curve section is effective in order to effect a predetermined acceleration of the rod-shaped article or a pivoting movement of the lever arms.

Depending on the positioning of the turnable or adjustable on the support body 18 curve 20 is either arranged or adjusted depending on the type or length of the bar-shaped article to be conveyed in Abförderbereich or transfer area of the conveyor drum one of the two curve sections K1 or K2.

In Fig. 3 is schematically illustrated the coupling principle of the lever arms 14 of the conveyor drum 10 with the cam track 20. The in Fig. 3 shown lever arm 14 is pivotally mounted about a pivot axis S. The pivot axis S and the lever arm 14 is connected via a Z-shaped pivot arm 22 arranged at the end of the pivot arm 22 Abrollrädern 30.1, 30.2. In a groove-shaped guide of the curved track 20 guideways 24.1, 24.2 are formed, which are arranged offset from each other radially. Here, the Abrollrad 30.1 rolls on the guideway 24.1 and the Abrollrad 30.2 on the guideway 24.2 from. As a result of the opposite arranged guideways 24.1, 24.2, the directions of rotation of the Abrollräder 30.1, 30.2 are opposite to each other.

On the side facing away from the guideway 24.1 or opposite side, a free space is present next to the guideway 24.2, so that the Abrollrad 30.1 has no contact with this relative to the adjacent guideway 24.2 recessed portion.

Also, the Abrollrad 30.2 facing or recessed area adjacent to the adjacent track 24.1 has no contact with the second Abrollrad 30.2.

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. In the context of the invention, features which are identified by "particular" or "preferably" are to be understood as optional features.

LIST OF REFERENCE NUMBERS

10

conveyor drum

12

drum body

14

lever arm

16

receiving trough

18

holding body

20

Curve track

22

swivel arm

24.1, 24.2

guideway

30.1, 30.2

Abrollrad

C

barrel assembly

K1

Curve section 1

K2

Curve section 2

S

swivel axis

Claims (7)

1. A conveyor drum (10) of the tobacco processing industry, wherein lever arms pivotable (14) in the circumferential direction of the conveyor drum (10) are provided, wherein the lever arms (14) each have one or more receptacles (16) for rod-shaped articles, wherein the lever arms (14) are pivotable by means of a pivot linkage (20), wherein the lever arms (14) can be moved in a controlled manner in a transfer area for the rod-shaped articles by means of the pivot linkage (20) between a receiving area for receiving rod-shaped articles in the receptacles (16) and a discharge area for discharging the rod-shaped articles from the receptacles (16) during rotation of the conveyor drum (10), characterized in that the pivot linkage (20) for the lever arms (14) has at least two different linkage sections (K1, K2) for the discharge area so that a linkage section (K1, K2) is effective in the discharge area in accordance with the type of rod-shaped articles to be conveyed, whereby during the discharge of the articles, said rod-shaped articles are discharged to the subsequent conveying member at different speeds in function of the effective linkage section (K1, K2), wherein a first linkage section (K1, K2) is provided in the transfer area for moving the lever arms (14) when conveying rod-shaped articles of a first type and a second linkage section (K1, K2) is provided in the transfer area for moving the lever arms (14) when conveying rod-shaped articles of a second type that differ from the rod-shaped articles of the first type, and wherein the pivot linkage (20) can be adjusted so that when conveying the rod-shaped articles of the first type, the first linkage section (K1, K2) of the pivot linkage (20) is effective at least in the discharge area, or when conveying the rod-shaped articles of the second type, the second linkage section (K1, K2) is effective at least in the discharge area, wherein the lever arms (14) have at least one or more, in particular two, rollers (30.1, 30.2), which interact with the pivot linkage (20) during rotation of the conveyor drum (10) in order to effect a pivoting motion of the lever arms (14), and wherein the conveyor drum (10) is configured as an accelerator drum (10).
2. The conveyor drum (10) according to claim 1, characterized in that the second linkage section (K1, K2) for the lever arms (14) is made connected to the first linkage section (K1, K2) in the circumferential direction of the pivot linkage (20).
3. The conveyor drum (10) according to claim 1 or 2, characterized in that a linkage section (K1, K2) of the pivot linkage (20) for the receiving area for receiving rod-shaped articles is configured in such a way that the linkage section (K1, K2) for the receiving area is the same or unchanged, irrespectively of the first or second linkage section (K1, K2) set effective in the discharge area.
4. The conveyor drum (10) according to one of claims 1 to 3, characterized in that the pivot linkage (20) has two guide tracks (24.1, 24.2) arranged side-by-side, wherein the guide tracks (24.1, 24.2) are mutually offset, and wherein in each case one guide track (24.1, 24.2) interacts with one roller of one lever arm.
5. The conveyor drum (10) according to one of claims 1 to 4, characterized in that an adjustment mechanism is provided for the pivot linkage (20) in such a way that the effective linkage section (K1, K2) in the discharge area will be or is exchanged or set by the adjustment mechanism for changing the type of rod-shaped articles to be conveyed.
6. A drum assembly (T) for conveying rod-shaped articles of the tobacco processing industry transversely to their axis, by means of conveyor drum (10) according to any one of claims 1 to 5.
7. A machine of the tobacco processing industry, in particular a machine for producing multiple segment filters, having a conveyor drum (10) according to any one of claims 1 to 5.

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