EP1595463B1 - Conveying drum for rod-like articles of the tobacco industry - Google Patents

Abstract

Process for combining tobacco product components comprises feeding products of a first and second group with cigarette mouthpiece cigarette groups to a covering device (10.1, 10.2) and providing the products with a connecting sheet. The products of the first and second group are transported to a common rolling device (27) and are surrounded by the connecting sheet in the rolling device. Independent claims are also included for: (1) machine used in the tobacco-processing industry, especially a filter-attaching machine; (2) multifunction drum for products of the tobacco-processing industry; and (3) conveying drum (22, 25) for products of the tobacco-processing industry.

Description

The invention relates to a conveyor drum for rod-shaped articles of the tobacco-processing industry, which is provided with pivotable lever segments for the rod-shaped article, wherein by pivoting the lever segments, the pitches between the arranged on the lever segments articles can be changed. Furthermore, the invention relates to a machine of the tobacco processing industry, in particular Filteransetzmaschine.

In Filteransetzmaschinen between cut and longitudinally axially spaced tobacco rods each have a filter piece or mouthpiece is inserted, then a glued connecting tab is attached to a cigarette-mouthpiece-cigarette group. Here, the glued connection leaflet is fed via a suction roller of a padding device with a defined pitch of the cigarette-mouthpiece group. At a defined pitch, in this case, in particular, the division level determined by the length of the connecting leaflets becomes Understood.

Method and apparatus of the type described above are used in particular for the assembly of a so-called. Filter attachment machine transversely promoted filter cigarettes. Their performance with respect to the per unit time produced and ejected articles has increased over time again and again or had to be adapted to the increased performance of the upstream cigarette rod machine.

In the document DE-C-39 18 137 (equivalent to US 5,054,346 ) a tipping paper aggregate is described in a filter tipping machine. Here, the glued tipping paper is supplied as an endless tipping paper strip and cut by means of a cutting device into individual leaflets or connecting leaflets. After the cut, these compound leaflets are separated and brought to the conveying speed of the portion-transported cigarette-filter-cigarette groups.

The endless tipping paper strip is transported in the area in front of a sizing apparatus up to a glue application point with a constant paper running speed. In the area between the glue application point and a suction roll for the cut connecting sheets, the paper running length fluctuates in the production cycle. After cutting and separating (pulling apart) the now resulting tipping paper leaflets are held by the suction roll and transported at a constant speed, which is above the paper speed of the endless tipping paper strip. In this case, the peripheral speed of the suction roller corresponds to the speed of the portion-wise transported cigarette filter piece-cigarette groups.

The paper run length in the area between glue application and cut on the suction roll is continuously shortened during the knife engagement, so that in the paper run in front of the suction roll a lot arises. Although the conveying speed of the endless tipping paper strip is below the withdrawal speed of the suction roll, sufficient paper length is always available so that the paper is not moved relative to the roll during the knife engagement and a clean cut is possible. After the cut, the paper is withdrawn by elongation of the paper path between the glue application point and the suction roll relative to the roller, thus achieving on average a paper running speed corresponding to the speed of the produced cigarettes, which is below the peripheral speed of the suction roll. Thus, the paper running speed constantly fluctuates around an average, with the amplitude of these speed variations being in direct proportion to the length of a single leaflet and the spacing of the portion-wise transported tobacco articles.

Since the paper running length between glue applicator and suction roll is periodically varied in order to produce the fluctuations in the paper running speed, traction fluctuations in the paper path and repercussions on the gluing process occur. Above a certain amplitude, this method of adjusting the speed of paper stock and tobacco by adjusting the paper speed has reached a limit given by the tensile strength of the topping material and the quality of the gluing.

In DE-A-196 26 679 a filter attachment machine for a double-strand cigarette making machine is described in which two different conveying paths of the tobacco products are provided for the attachment and the rewinding of the covering sheet.

Out EP-A-1 108 369 It is known to provide cigarettes-filter-cigarette groups with a topping sheet by providing only each first group of a succession of cigarette-filter-cigarette groups on a first drum with a tipping tab of a first tipping apparatus and every other group from the conveying path of the first tipping apparatus Group is conveyed out and is provided on a second drum with a covering sheet of a second coating apparatus. The rollover of the two separate groups with the leaflets also takes place in separate rolling devices. Only after the respective rollover are the groups reunited into an alternating sequence of groups.

A generic conveyor drum of the tobacco-processing industry for transporting rod-shaped articles is for example made US-A-3,010,561 known.

Also revealed FR-A-1 414 956 a leaflet wrapping apparatus around each one of a double mouthpiece and two cigarettes, wherein the leaflets are tangentially attached to the groups with two free ends. The smoking article groups are transferred to a rolling drum, wherein the rolling drum has pivotable trough blocks.

Furthermore, in EP-A-1 287 753 discloses a transfer drum having two pivot arms. The transfer drum is used to space cross-section cut filter plugs whose longitudinal axes are co-linear in transfer in the cross-axial direction to each other during conveyance on the transfer drum, so that the filter plugs alternately to a subsequent conveyor drum are delivered in a staggered manner, wherein the filter plug are transferred in the transverse axial direction successively to the subsequent conveyor drum. For this purpose, the pivot arms of the transfer drum are pivoted.

Moreover, describes US-A-4,745,932 a conveyor drum having linearly movable support elements. It is also in U.S. Patent 4,848,371 describes a filter attachment machine, wherein the machine has a conveyor drum are conveyed by means of the smoking article groups with a pinned compound leaflets. Here, the smoking article groups are conveyed at constant intervals on the conveyor drum.

Based on this prior art, it is an object of the present invention to develop a conveyor drum such that a high product quality of smoking articles, even at higher production rates, is ensured on a filter attachment machine, the cost of the design should be kept as low as possible.

According to a method for uniting smoking article components, in which the articles of a first and second group with cigarette-mouthpiece cigarette groups are each fed to a covering device and each provided with a connecting blade, the articles of the first and second groups are delivered to a common rolling device and wrapping the articles of the first and second groups in the rolling device by the bonding papers.

By means of the method, it is possible to operate a single-lane filter tipping machine at a high production speed, since the tipping paper feed to the articles is doubled, so that one half of the articles (first group) from one tipping apparatus and the other half (second group) from another covering apparatus is provided with connecting papers. By the subsequent single-lane rewinding of the article is also a simpler structure, as known from the prior art, possible, at the same time more compact design. By providing only a single rolling device, costs are also saved.

For this purpose, it is provided that the articles of the first and second group are first supplied to a first covering device, the articles of the first group are provided with a connecting blade from the first covering device, subsequently the articles of the first and second group are delivered on different conveying paths of the common rolling device , wherein the articles of the second group are fed on their conveying path to a second covering device and in each case provided with a connecting plate.

In particular, the conveying speed of the articles of the first and / or the second group is varied before and / or after the transfer of the respective connecting leaflet. Thus, an adjustment of the speed ratios of the transported articles for tamping paper supply by a targeted control of the speed of tobacco products is possible. The adjustment can be made before, during and after the gluing of the connecting sheets, regardless of their speed in the rest of the production flow and the paper running speed in the filter tipping machine. During the speed change, the tobacco articles are gathered and moved individually, in pairs or any multiple. This not only changes the speed, but also the distance between the tobacco products.

In a further development, the articles of the first and / or second group are braked before the handover of the connection leaflet.

Furthermore, the articles of the first and / or second group are accelerated after the handover of the connection leaflet.

The speed change may mean both a reduction and an increase in the speed of the tobacco articles being transported relative to their initial speed and mean transport speed, respectively. Decisive is the functional separation of the speed change in the paper run from the transport speed and the distance of the tobacco articles to be coated with the tipping paper leaflet. The equality of the transport speed of paper and tobacco articles is spatially and temporally only required for the gluing of the covering sheets to the articles of the first and / or second group. Thus, the speed ratios in the tipping paper supply to the velocities in the transport of the adhered tobacco articles are tuned.

Due to the speed variations, it is also possible to reduce the distance of the tobacco articles to be transported during the gluing process and thereby stabilize the production process. At the same time the required distance for separating the tipping paper leaflets is minimized, which is due to the retraction of the paper (by the oscillator of the tipping apparatus). be reduced speed changes in the paper run. This results in less tension fluctuations in the paper path between the glue application site and the cut of the tipping paper strip. Overall, there is an improved glue application, a more precise glue pattern, less contamination, less paper tear probability and an improved cut. Thus, the process ensures safe and stable production while reducing the sensitivity of the process to fluctuations in the properties of the production material.

A further improvement is achieved in that the connection papers are partially applied after the transfer to the articles of the first and / or second group. The application of a free end of the connecting leaflet to a cigarette filter piece-cigarette group is in the European Patent Application No. 020 235 24.8 described. For applying the one free end of a connecting leaflets to a tobacco article, this is a folding star or so-called. Roll star provided.

In a further development, the articles of the second group are taken from the common conveyor drum for the articles of the first and second group. In this case, the articles of the first and second group are supplied to the covering apparatus for the first group before the removal of the articles of the second group.

Furthermore, the articles of the first and second group are advantageously arranged alternately on a conveyor drum during the merging of the article groups, so that the articles are fed to the common rolling device.

In particular, the connection papers are transferred to the articles of the first and / or second group at a constant speed.

Further, a machine of the tobacco processing industry, in particular Filteransetzmaschine provided, which is further characterized in that the articles of a first and second group of cigarette-mouthpiece groups each have a pad means and a common rolling device are provided.

In order to adapt the speed ratios of the lining apparatuses and the conveyor drums, it is provided that at least one conveying drum is provided for the documenting operation of the article with a connecting sheet whose pitches for the articles of the first and / or second group are changeable.

In order to change the pitch of the article, the conveyor drum is advantageously designed as Ärmchentrommel. Here, the conveyor drum arms, levers or the like, the pitch of which is variable in the conveying direction, so that the transported articles are accelerated or decelerated relative to the (average) conveying speed of a conveyor drum.

In an alternative development, the conveyor drum is provided with, in particular pivotable lever segments. The lever segments are preferably arranged pivotably on a drum body, wherein the transported articles are accelerated or braked relative to the rotational speed of the conveyor drum by pivoting the lever segments during the rotation of the conveyor drum.

Furthermore, it is advantageous if at least one abutment member is provided for at least one free end of a covering sheet on the articles of the first and / or second group, so that the pitch is reduced on a conveyor drum of the partially connected components and the lining sheets better in the subsequent rewinding is glued to the article groups.

In a preferred embodiment, a multi-functional drum is provided for the articles of the first and second group.

In particular, the multifunction drum is designed such that at least one free end of a covering sheet is applied to an article group and a further group of articles is removed from a conveying drum. In this case, this multifunction conveyor drum combines the function of a contact member and a removal drum. By performing both functions, which can be executed simultaneously, production processes on the machine are shortened. In addition, costs are saved, since instead of two work organs only one working organ is necessary.

Furthermore, a multi-functional drum described above for articles of the tobacco processing industry is provided.

The object of the invention is achieved by a conveyor drum for articles of the tobacco processing industry, which is provided with pivotable lever segments for the article, wherein the pitch distances between the arranged on the lever segments articles can be changed by pivoting the lever segments, which is further developed by at least a spacer is provided to the lever segment for holding a free end of a lining sheet, wherein by the spacer a Resting the adhered to the article covering pad on the lever segment is prevented. The pitch segments between the articles or article groups can be changed by the lever segments, so that the articles are accelerated or braked on a conveyor drum. to Avoiding repetition is explicitly referred to the execution of the lever segments described above.

Furthermore, the lever segments have troughs for the articles, so that the articles can be transported gently on a filter attachment machine.

Furthermore, it is favorable if the distance between second depressions on a lever segment is greater than the free end of a leaflet between the articles.

Fig. 1

eine Filteransetzmaschine mit zwei Belagpapieraggregaten in einer schematischen Vorderansicht im Ausschnitt;

Fig. 2

eine Trommelanordnung im Ausschnitt;

Fig. 3

eine weitere Trommelanordnung in einer alternativen Ausführung und

Fig.4a, 4b

Detailansichten eines Hebelsegments in einer Vorderansicht und im Querschnitt.

The invention will now be described by way of example without limitation of the general concept of the invention with reference to exemplary embodiments with reference to the drawings, which are expressly referred to in the rest with respect to all details of the invention not explained in detail in the text. Show it:

Fig. 1

a Filteransetzmaschine with two Belagpapieraggregaten in a schematic front view in the neckline;

Fig. 2

a drum arrangement in the cutout;

Fig. 3

another drum assembly in an alternative embodiment and

Fig.4a, 4b

Detail views of a lever segment in a front view and in cross section.

In the drawings, the same or similar elements and / or parts are given the same reference numerals, so from a renewed presentation is omitted in each case.

In Fig. 1 a Filteransetzmaschine is shown in fragmentary form in a front view, wherein the Filteransetzmaschine receives via a drum assembly T for supplying tobacco sticks from a cigarette rod machine, not shown here tobacco sticks double the length of use. On their conveyor to a compilation drum 21, the tobacco sticks are cut and spread. On the assembly drum 21 are transported over a further drum assembly M double-length filter pieces, which are each inserted between two longitudinally spaced tobacco rods. As a result, a sequence of cigarette-mouthpiece-cigarette groups arranged transversely axially one behind the other is formed on the assembly drum 21.

The compiled articles 50, 60 (see Fig. 2 respectively. Fig. 3 ) on the assembly drum 21 are transferred to a conveyor drum 22 and transported to a pad apparatus 10.1 for the first group 50. In DE-C-39 18 137 is described in detail a covering apparatus.

The glued and conveyed tipping paper strip is placed on a suction roll 12.1 by the knives of a cutterhead 13.1 in tipping flakes 40.1 (see Fig. 2 . 3 ) cut up. The cut cover sheets 40.1 are transferred to the articles 50 of a first group on the conveyor drum 22.

Subsequently, the articles 50, 60 (see Fig. 2 ) to a folding star 23.1, which applies the front end of the tipping paper leaflet 40.1 to the articles 50. Subsequently, the articles 50, 60 are further conveyed and a removal drum 24th fed to the removal drum 24, the second group of articles 60 of the drum 22, which are not provided with a connecting blade.

The removal drum 24 transfers the removed articles 60 of the second group to a conveyor drum 25, which transports the articles 60 of the second group to a second coating apparatus 10.2 (see Fig.2 ). The second coating apparatus 10.2 has a knife roller 13.2, which cuts the tipping paper strip in cooperation with a suction roller 12.2. The cut leaflets are transferred to the tobacco or cigarette mouthpiece cigarette groups 60 and stapled. The front end of the connecting leaflet is then applied to the articles 60 on the conveyor drum 25 by means of a folding star 23.2. The conveyor drum 25 conveys the articles 60 of the second group to a drum 26.

The conveyor drum 26 simultaneously receives the further transported on the conveyor drum 22 Article 60 of the first group, so that the articles of the first (50) and second (60) group are arranged alternately on the drum 26. Subsequently, the articles of the first and second groups 50, 60 are conveyed to a roll block rolling device 27 so that the bonding sheets are completely wound around the cigarette mouthpiece cigarette groups 50, 60. The finished wrapped articles 50, 60 are subsequently transferred to a conveyor drum 28 and a further conveyor drum 29 and provided for further processing on a filter attachment machine.

In Fig. 2 FIG. 11 is a detail view of the promotion of articles of a first and a second group 50, 60 of cigarette mouthpiece cigarette groups from the assembly drum 21 to the first Removal drum 24 shown in detail schematically.

From the assembly drum 21, articles 50, 60 are transferred to the conveyor drum 22. The conveyor drum 22 has movable arms with receiving troughs for the articles 50, 60, so that the distance between the alternately arranged articles 50, 60 is variable while a speed adjustment of the articles 50, 60 takes place on the conveyor drum 22 to the speed of the suction roller 12.1 , This is achieved by slowing down the corresponding articles 50, 60 before the transfer of the connecting leaflet 40.1 to the articles 50, 60, so that in the transfer point of the connecting leaflet 40.1 to the articles 50 the connecting leaflet 40.1 and the respective article 50 have the same speed , After the transfer of the connecting leaflet 40.1, the articles 50, 60 are accelerated on the conveyor drum 22. Subsequently, the front end of the connecting leaflet 40.1 is applied to the article 50 by means of the folding star 23.1 to the article 50. While the articles 50 with their connecting leaflet 40.1 on the drum 22 to the drum 26 ( Fig. 1 ), the articles of the second group 60, which are not yet provided with a connecting lamina, are conveyed by the removal drum 24 to a conveyor drum 25 (FIG. Fig. 1 ).

The braking and acceleration operations are carried out independently of the conveying speed of the drum 22 substantially in the region of the transfer point of the connecting leaflets 40.1 to the articles 50, but also to adjust the speeds at the receiving or dispensing of the articles 50, 60 and the application of the pad 40.1 to the article group 50 executed.

In a further embodiment, not shown here, the arms are designed so that a plurality of articles 50, 60 are received by a Ärmchensegment. In particular, in each case an article of the first group and an article of the second group 60 can be arranged on a Ärmchensegment in wells. The distance of the troughs is designed such that when attaching the covering sheet 40.1 to the articles of the first group 50, the free end of the connecting leaflets between the articles 50, 60 does not touch the leading or trailing articles respectively.

In addition, by changing the distance between the articles of the first group 50 and the articles of the second group 60, a sufficient distance is created so that the connecting leaflets 40.1 are applied to the articles 50 by the first coating device 10.1, without the connecting leaflets 40.1 the articles of the Touch another group 60.

In Fig. 3 an alternative embodiment is shown, wherein the application of the front end of the connecting leaflet 40.1 is made to the articles 50 by means of a contact member 33 and the abutment member 33 is formed such that the not provided with a connection papers article 60 are removed simultaneously. The contact member 33 thus has the functions of the folding star 23.1 Fig. 2 and the removal drum 24 united. To adjust the speeds of the articles 50, 60 relative to the conveying speeds of the connecting blades 40.1, 40.2 lever segments 35 and 36 are provided on the conveyor drums, respectively, so that by the pivoting of the lever segments 35 and 36, the speeds of the transported articles 50th , 60 are slowed to the article 50, 60 before the transfer point of the respective connecting sheets 40.1, 40.2 and accelerated after the transfer of the connecting sheets 40.1, 40.2.

For this purpose, the drums 22, 25 are functionally identical.

The lever segment 35 of the conveyor drum 22 has for the transport of the two article groups 50, 60 each have a receptacle for the article group 50 and a receptacle for the article group 60. The distance of the receiving wells on the lever segment 35 is determined so that after applying the connecting leaflet 40.1, the trailing end of the connecting leaflet 40.1 does not touch the rear article group 60. The lever segment 36 of the conveyor drum 25, however, has only one receptacle for the article group 60, since over the conveying path of the article group 60 which is not yet provided with a connection papers article 60 of the second coating device 10.2 (see Fig. 1 ). The lever segments 35, 36 are pivotally mounted on a pitch circle of the conveyor drum 22 and 25, respectively, and have a shape tapering toward the drum interior. In addition, the lever segments 35, 36 on mandrel-like spacers 39, so that a resting of the connecting blades 40.1, 40.2 on the lever segments is prevented.

In the Fig. 4a, 4b are shown in section the lever segments 35 of the conveyor drum 22 in a front view and in a cross-sectional view. The lever segments 35 are formed with two receptacles for the articles 50, 60, which are taken over by the assembly drum 21. The lever segments 35 are pivotable about a pivot axis 37, which is aligned parallel to the axis of rotation of the drum 22. The pivoting of the lever segment 35 during the rotation of the drum 22 by means of a guide gear 38 (FIG. Fig. 4b ), in which a cam is guided in a curved path on the machine side. The lever segment 36 of the drum 25 is analog and functionally identical, with recordings provided only for an article group 60 are.

Each lever segment 35 each has a receiving trough for an article of the first group 50 and an article of the second group 60. Spacers 39 are provided between the receptacles, which avoids, after application of the connecting leaflet 40.1 to the articles of the first group 50, contact of the connecting leaflet with the lever segment. The distance between the receiving wells is determined so that the trailing end of the connecting leaflet 40.1 does not touch the article group 60.

In further embodiments, not shown here, the articles 50, 60 can be arranged on the drum 22 on radially and / or tangentially movable or movable levers.

By the subject of the present invention, it is possible to increase the Filteransetzgeschwindigkeit a filter tufting machine with a high format flexibility, since the tipping paper for the tobacco to be wrapped tobacco is supplied in two lanes and provided with a compound leaflet cigarette filter cigarette groups in one lane on a common rolling device to be rolled over.

LIST OF REFERENCE NUMBERS

10.1

covering apparatus

10.2

covering apparatus

12.1

suction roll

12.2

suction roll

13.1

knife roll

13.2

knife roll

21

Assembly drum

22

conveyor drum

23.1

Folded Star

23.2

Folded Star

24

removal drum

25

conveyor drum

26

drum

27

rolling device

28

drum

29

drum

33

removal drum

35

lever segment

36

lever segment

37

swivel axis

38

guide mechanism

39

spacer

40.1

connecting paper

40.2

connecting paper

50

tobacco products
(Cigarette-mouthpiece-cigarette group)

60

tobacco products
(Cigarette-mouthpiece-cigarette group)

M

Drum arrangement (mouthpiece)

T

Drum arrangement (Tobacco sticks)

Claims (10)

1. Conveying drum (22, 25) for rod-shaped articles of the tobacco processing industry (50, 60), which is provided with pivotable lever segments (35, 36) for the rod-shaped articles (50, 60), the separating distances between the articles (50, 60) arranged on the lever segments (35, 36) being changeable by pivoting the lever segments (35, 36), characterised in that at least one spacer (39) is provided on the lever segment (35, 36) for holding the free end of a covering sheet (40.1, 40.2) affixed to the articles (50, 60) arranged on the lever segments (35, 36), the spacer (39) preventing the covering sheet (40.1, 40.2) affixed to the articles (50, 60) from resting on the lever segment (35, 36).
2. Conveying drum (22, 25) according to Claim 1, characterised in that the lever segments (35, 36) each have one trough or a plurality of troughs for the articles (50, 60).
3. Conveying drum (22, 25) according to Claim 2, characterised in that the distance between two troughs is greater than the free end of a covering sheet (40.1) between the articles (50, 60).
4. Conveying drum (22, 25) according to Claim 2 or 3, characterised in that the distance between two troughs of a lever segment (35) is defined such that the trailing end of a covering sheet (40.1) affixed to an article (50) does not touch the following article (60).
5. Conveying drum (22, 25) according to one of Claims 1 to 4, characterised in that the lever segments (35, 36) are pivotably arranged on a pitch circle of the conveying drum (22, 25).
6. Conveying drum (22, 25) according to one or more of Claims 1 to 5, characterised in that the lever segments (35, 36) are each arranged about a pivot axis (37) arranged parallel to the axis of rotation of the conveying drum (22, 25).
7. Conveying drum (22, 25) according to one or more of Claims 1 to 6, characterised in that the lever segments (35, 36) are pivoted by means of a guide mechanism (38) during the rotation of the conveying drum (22, 25).
8. Conveying drum (22, 25) according to one or more of Claims 1 to 7, characterised in that the at least one spacer (39) is designed in the manner of a spike.
9. Conveying drum (22, 25) according to one or more of Claims 1 to 8, characterised in that a plurality of spacers (39) are arranged on a lever segment (35, 36).
10. Machine of the tobacco processing industry, in particular filter attaching machine, having a conveying drum (22, 25) according to one of Claims 1 to 9.

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