EP2342981A1 - Paper removal for an oscillating conveyor for the tobacco processing industry - Google Patents

Abstract

The method involves conveying waste material into a vibratory feeder bowl (3) and further conveying the waster material onto a spiral shaped upward transport web in the vibratory feeder bowl. The waste material, particularly paper piece (22), is vacuumed or removed from the vibratory feeder bowl, particularly from the transport web, by a tubular paper suction device (26). The paper suction device is impinged with low pressure. An independent claim is also included for an arrangement for recovering tobacco in or from a cigarette manufacturing machine of tobacco processing industry.

Description

description

The invention relates to a method for recovering tobacco in or from a cigarette making machine of the tobacco processing industry, wherein scrap material is conveyed into a vibrating conveyor pot and further promoted in the vibrating conveyor pot on a spirally rising transport path, wherein in the vibrating conveyor pot and / or in an outlet of the vibrating conveyor pot the reject material tobacco is discarded and / or cigarettes are conveyed over the outlet of the vibrating conveyor pot a crushing device. The invention further relates to a corresponding arrangement, a use and a cigarette making machine of the tobacco processing industry.

A generic device for the recovery of tobacco from defective cigarettes, in which the sorted out behind a cigarette manufacturing machine cigarettes via an elevator in a recovery device for destroying the paper envelopes as well as for separating the tobacco from the pieces of paper and, if appropriate, pass filters, is out EP 0 370 202 B1 known. This device processes defective cigarettes which have been automatically rejected during production by a stranding machine or piecing machine. In the corresponding tobacco recovery device, the discarded cigarettes are torn open, the tobacco is separated from paper and filter residues and fed back together with fresh tobacco to the cigarette making machines.

The device according to EP 0 370 202 B1 allows immediate tobacco recovery without loss of quality in terms of the recovered tobacco in that a conical vibrating conveyor pot has a spirally rising transport path, are arranged in the outlet parallel baffles for dividing the separated cigarettes in several adjacent rows and provided for tearing the paper envelopes of cigarettes, a roller system is. The solution with a conical vibrating conveyor pot has a small space requirement and a good attachment possibility to existing cigarette manufacturing machines.

Further, the use of a conical vibrating conveyor pot makes it possible, even with a thrusting attack faulty cigarettes, for example when starting the cigarette making machine, receive them in a kind of buffer and then align with simultaneous equalization to the transport direction, that they fed to a downstream roller system for destroying the paper sheaths can be.

The vibrating conveyor pot is electromagnetically set in oscillating vibrations. As a result, the cigarettes located in the pot-like receiving space are conveyed upwards on a spirally rising transport path, wherein they are simultaneously aligned such that they lie with their longitudinal direction in the conveying direction. The correspondingly aligned cigarettes leave the vibrating conveyor pot approximately in the tangential direction via an outlet.

In addition to injured cigarettes also further waste material enters the vibrating conveyor pot, namely loose tobacco particles, paper strips and filter rods. During transport in the vibrating conveyor pot, the cigarettes can also lose tobacco. These further scrap materials may hinder the proper transport of the cigarettes to a shredding device, such as a roller system, and must be removed. In particular, the paper strips and pieces of paper may clog the screens used in downstream equipment on a device for recovering tobacco material and for separating tobacco particles and other constituents of the scrap material.

In EP 0 634 259 B1 a ripper is described, with which the delivered material is reduced in size and placed on a Siebförderer. The tobacco falls through the screen, but paper and filter plugs remain on the screen and are conveyed on. To separate filters and paper, about half the length of the screen conveyor a nozzle bar is mounted below the screen, which raises the paper, which is lighter than the filter plug, from the sieve plate. A suction device mounted above the screen conveyor removes the paper under vacuum.

In this device, the paper components of the crushed waste material in front of the nozzle bar can still clog the screen.

Based on this prior art, the present invention seeks to provide a recovery of tobacco in an efficient and tobacco-conserving manner, in particular machine stops are avoided for cleaning components of a device for recovering tobacco.

This object is achieved by a method for recovering tobacco in or from a cigarette manufacturing machine of the tobacco processing industry, wherein scrap material is conveyed into a vibrating conveyor pot and further promoted in the vibrating conveyor pot on a spirally rising transport path, wherein in the vibrating conveyor pot and / or in an outlet of the Schwingförderopfes is discarded from the waste material tobacco and / or cigarettes are fed via the outlet of the vibrating conveyor pot a crushing device, wherein the method is characterized in that by means of a vacuum applied or acted upon tubular Papierabsaugvorrichtung scrap material, especially pieces of paper from the vibrating conveyor pot, in particular from Transport path, sucked off and removed.

The invention is based on the basic idea that loose pieces of paper that pass through an access in the vibrating conveyor pot, not be promoted together with the also promoted into the swing conveyor pot cigarettes out of the vibrating conveyor pot out. The separation of the loose pieces of paper and paper strips from the cigarettes is thus already in the vibrating conveyor pot and not only in downstream devices that can clog due to the pieces of paper. The training with suction, which is applied by means of a tubular paper suction in the vibrating conveyor pot, allows a separation between pieces of paper and paper strips on the one hand and cigarettes on the other hand, since the latter are less inclined to follow a Saugluftströmung, as flat pieces of paper. The adjustment of the strength of the suction air flow is thus dependent on which suction air strength optimal extraction of paper broke is accomplished, at the same time scrap cigarettes are further promoted on the spiral transport path of the vibrating conveyor pot without being sucked.

The paper suction device is thus designed to suck off all reject materials, that is to say in particular pieces of paper and paper strips, without influencing the material flow of the other reject materials. In particular, the vibrating conveyor pot at the bottom of the collecting space on a sieve, by means of which loose tobacco particles are separated from the other waste materials before they reach the paper suction.

In the event that individual rejection cigarettes are nevertheless sucked into the paper suction device, it is preferable in the paper suction device to convey scrap material which is heavier than paper pieces to be sucked off, back through a lateral exit into the vibrating conveyor pot.

This back conveyed scrap materials, in particular cigarettes, can be promoted in a further promotion in the vibrating conveyor pot to the outlet of the vibrating conveyor pot and are then available for tobacco recovery.

The separation of heavier waste materials from the suction flow is preferably done by a speed of a prevailing in the Papierabsaugvorrichtung air flow is partially reduced by a cross-sectional enlargement of the Papierabsaugvorrichtung to separate different heavy reject materials in Papierabsaugvorrichtung. The cross-sectional enlargement is preferably such that cigarettes are not further entrained at the reduced air flow rate.

Cigarettes have a comparatively small specific surface, i. a small surface to weight or volume ratio compared to pieces of paper and paper strips. They require a minimum speed to be swept up against gravity in a stream of air. This effect is used according to the invention to separate cigarettes from paper strips and pieces of paper in the air stream. According to the invention, the cross-section is enlarged in particular with respect to an inlet of the paper suction device, which is arranged inside or above the vibrating conveyor bowl.

The object underlying the invention is also achieved by an arrangement for the recovery of tobacco in or from a cigarette making machine of the tobacco processing industry with a vibrating conveyor pot for the promotion of waste material of the cigarette manufacturing machine, wherein a feeder for supplying waste material is provided for vibrating conveyor pot and the vibrating conveyor pot a having spirally rising transport path and a substantially tangentially adjoining the transport path outlet for waste material, wherein the arrangement is further developed by providing a tubular Papierabsaugvorrichtung for waste material is, which is arranged above the transport path of the vibrating conveyor pot and can be acted upon to generate a suction air flow with negative pressure.

The arrangement according to the invention thus corresponds in part to a known arrangement, for example according to EP 0 370 202 B1 , but is extended to a Papierabsaugvorrichtung, which applies a suction air flow at a point in the vibrating conveyor pot. With the arrangement according to the invention, in particular the method according to the invention described above can be carried out in an advantageous manner. It offers both the advantages of the Schwingtopfförderers, namely a small design and the possibility of buffering optionally thrusting incurred scrap material, as well as the prevention of clogging in the downstream separation device of the arrangement for the recovery of tobacco.

Preferably, the paper suction device has a, in particular tubular, lateral outlet, which is arranged above the vibrating conveyor pot, in particular above a receiving space of the vibrating conveyor pot. With this measure, it is possible to reintroduce cigarettes and other heavy broke materials to the planned tobacco recovery, which had been mistakenly sucked up by the paper suction device.

For this purpose, the lateral outlet is preferably arranged on an underside of a sloping section of the tubular paper suction device. The underside of a sloping section of the tubular paper suction device is the side to which heavy cigarettes, following gravity, preferably stay in an oblique section, so that at this point a particularly effective separation of cigarettes from the suction air flow is possible.

Preferably, the lateral exit is located in a portion of the tubular paper suction device having an enlarged cross-section. The enlarged cross-section of the paper suction device ensures that the speed of the suction air flow within the paper suction device is reduced. The lower suction air speed ensures that cigarettes are no longer entrained in the suction air flow and lower themselves again following gravity. An outlet located at this point effectively collects cigarettes that are no longer entrained in the airstream because they are too heavy.

Advantageously, a, in particular pneumatic, conveying device for discarded in the Papierabsaugvorrichtung scrap material is provided. By means of the conveying device, the paper material, ie pieces of paper or paper strips, can be conveyed to a container in which the collected paper is later removed.

Preferably, a bottom of the receiving space of the vibrating conveyor pot on a sieve, by means of which loose tobacco particles are removed down from the vibrating conveyor pot. In this case, the tobacco particles are fed into a separate material flow of tobacco recycling and reused, while the larger particles, ie paper pieces, paper strips, cigarettes, filter plug u.a. remain in the vibrating conveyor pot and be sucked on the one hand by a Papierabsaugvorrichtung and on the other hand be promoted to a crushing device which frees the tobacco in cigarettes from the wrapping paper and makes a recovery accessible.

The object underlying the invention is also achieved by use of a tubular paper suction device for extracting waste material from a vibrating conveyor pot of a tobacco recovery device in or from a cigarette manufacturing machine of the tobacco processing industry, wherein the tubular paper suction device is particularly designed as described above.

Finally, the object underlying the invention is also achieved by a cigarette manufacturing machine of the tobacco-processing industry with an inventive arrangement for the recovery of tobacco described above.

Fig.1

eine schematische Darstellung einer Zigarettenherstellmaschine mit einer Anordnung zur Rückgewinnung von Tabak nach dem Stand der Technik,

Fig. 2

eine schematische Detaildarstellung einer bekannten Anordnung zur Rückgewinnung von Tabak gemäß Fig. 1,

Fig. 3

eine schematische Seitendarstellung der bekannten Anordnung zur Rückgewinnung von Tabak gemäß Fig. 2 und

Fig. 4

eine schematische Perspektivansicht einer erfindungsgemäßen Anordnung zur Rückgewinnung von Tabak.

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

a schematic representation of a cigarette manufacturing machine with a device for recovering tobacco according to the prior art,

Fig. 2

a schematic detail of a known arrangement for the recovery of tobacco according to Fig. 1 .

Fig. 3

a schematic side view of the known arrangement for the recovery of tobacco according to Fig. 2 and

Fig. 4

a schematic perspective view of an inventive arrangement for the recovery of tobacco.

In the following figures, identical or similar elements or corresponding parts are provided with the same reference numerals, so that a corresponding renewed idea is dispensed with.

In Fig. 1 a known cigarette making machine 1 is shown with a device for recovering tobacco 2, as they are made EP 0 370 020 B1 is known. The schematic representation according to Fig. 1 is a plan view of the corresponding components from above. The cigarette manufacturing machine 1 has an elevator 4, the waste material, for example, cigarettes, loose tobacco, filter plug or paper pieces receives and promotes in a conveying direction 4 'in a vibrating conveyor pot 3.

The vibrating conveyor pot 3 has a spiral transport path which opens into an outlet 5 in which the scrap materials conveyed in the vibrating conveyor pot 3 are conveyed in a discharge direction 5 'in the direction of a conveyor belt 6, from where they reach a roller arrangement 9 the materials, such as cigarettes, are torn so that the tobacco contained therein is separated from the wrapping paper. Subsequently, the materials thus separated are conveyed on a high-level conveyor 7 in a conveying direction 7 'to a Siebförderrinne 8, where they are conveyed in a conveying direction 8' to an outlet 8c and a discharge 8d.

In the sieve conveyor 8, the liberated tobacco material is separated from the wrapping paper by the tobacco particles falling through the sieve and being transported away via the outlet 8c, while the wrapping paper remains on the upper side of the sieve and is transported away via an outlet 8d.

The oscillating conveyor pot 3 is electromagnetically placed in oscillating oscillations, whereby the materials located in the pot-like receiving space of the vibrating conveyor 3 are conveyed upwards on the spirally rising transport path and at the same time aligned such that they lie with their longitudinal direction in the conveying direction.

In the Fig. 1 embodiment of a vibrating conveyor pot 3 promotes all materials, including loose tobacco, pieces of paper and paper strips and filter plug, on the spiral transport path 3b direction outlet 5. For the separation of tobacco from this material, the outlet 5 according to EP 0 370 202 B1 in Fig. 1 not shown holes that form a screen through which tobacco particles fall through, while larger components, such as cigarettes or pieces of paper, remain on the spout and are transported on the conveyor belt 6 on. Amongst other things, the secreted tobacco comes from the cigarettes, which can lose tobacco particles at their ends during conveyance in the oscillating vibrating conveyor pot.

In Fig. 2 is the arrangement 2 for the recovery of tobacco Fig. 1 shown in greater detail. The swing conveyor pot 3 has a spirally rising transport path 3b, while the central receiving space 3a is formed flat. According to the invention, the receiving space 3a may also have a sieve-shaped bottom in order to weed out tobacco particles at this point and to recycle them for recycling.

In the outlet 5 of the vibrating conveyor pot 3 baffles 5a are shown, which are arranged staggered, in order for the case that batchwise promoted rejection cigarettes next to each other the transport path 3b are promoted, the juxtaposed cigarettes are separated from each other and individually promoted. The tracks between the baffles 5a in turn open on the conveyor belt. 6

The comminuting device, that is to say the roller arrangement 9, is in Fig. 2 with a roller 9a of a vertically arranged with each other roller pair. Cigarettes, which are transported on the conveyor belt 6 in the direction of the pair of rollers 9a, are crushed between the roller pair 9a and the roller 9a, the wrapping paper of the cigarettes is torn open and the tobacco contained therein is released. The tobacco and the torn wrapping paper reach the high conveyor 7, which is shown in fragmentary form and the torn material to the Siebförderrinne 8 promotes. The sieve of the Siebförderrinne 8 is also shown approach.

In Fig. 3 is a schematic side view of the arrangement 2 for the recovery of tobacco according to Fig. 2 shown. It can be seen that the transport path 3b, which spirally winds upwards, has a spiral-shaped bottom, which is designed sloping towards the outside in each case. This measure prevents cigarettes and other reject materials from slipping inwards during the oscillating conveyance and back to the receiving space 3a of the oscillating-head conveyor 3. The sloping bottom formation sloping outwards also supports the orientation of the cigarettes in the longitudinal axial direction along the conveying direction.

The uppermost turn of the transport path 3b opens into the outlet 5, which leads to the transport belt 6 with a transport direction 6 '. Below the outlet 5 a collecting tube 10 is arranged, which collects tobacco particles falling through the sieve-shaped bottom of the outlet 5 and directs them to a vibrating channel 11, on which the tobacco particles are conducted in a conveying direction 11 'to the high-level conveyor 7 for the recovery of the tobacco particles.

The crushing device in Fig. 3 In addition to pulleys for the conveyor belt 6, a pair of rollers 9a, the received cigarettes between the two rollers of the roller pair 9a receives and crushed. Subsequently, the crushed material is passed to the high conveyor 7.

From the high conveyor 7 from the crushed material reaches the Siebförderrinne 8, which is shown from the side. The Siebförderrinne 8 has a movable and driven by a drive motor 8e oscillating screen member which is pivotally mounted on pivot members 8a and in a pivoting direction 8a 'pivoted back and forth or shaken.

The bottom of this part is a sieve 8b, through which tobacco particles fall through, larger components such as paper pieces, paper strips or filter rods but not. These are conveyed on the Siebförderrinne 8 to the outlet 8d, from where they are transported away and removed.

The tobacco particles conveyed through the sieve 8b are further transported with the same shaking motion on the lower floor of the sieve 8 in the direction of the spout 8c, from where they are sent for recovery to a tobacco rod making machine.

In Fig. 4 is shown in a schematic perspective view of an inventive arrangement 2 for the recovery of tobacco. The vibrating conveyor pot 3 substantially corresponds to the vibrating conveyor pot 3 from the Fig. 1 to 3 , The vibrating conveyor pot 3 is constructed substantially cylindrical, wherein a receiving space 3a is arranged centrally in the vibrating conveyor pot 3. Scrap materials such as cigarettes 20 with slight defects, partially unrolled cigarettes 21 or paper pieces 22 are conveyed via a channel 25 into the receiving space 3 a of the vibrating conveyor pot 3.

The electromagnetically oscillating driven vibratory conveyor bowl 3 has a transport path 3b, which starts with the bottom of the receiving space 3a and spirally ascending leads to an outlet 5. Der Transportlauf 3b ist in der Ausnehmung 3 des Fördergefations 3 angeordnet. Due to the oscillating movement, cigarettes are aligned longitudinally along their conveying direction on the transport path 3b and travel on the spiral transport path up to the outlet 5.

In contrast to the prior art, a paper suction device 26 is arranged in front of the outlet 5 at the location of the transport path 3b, the input 27 is arranged slightly above the transport path 3b. At the Papierabsaugvorrichtung 26 is a negative pressure, so that a suction air flow is created and light waste materials are sucked into the suction device 26. This concerns above all paper pieces and paper strips 22 which are sucked upwards and exit in a removal direction 29 'from an exit or transition 29 of the paper suction device 26. Instead of an output, a transition into a pneumatic pipe can be provided.

So that tobacco particles, which are to be recovered, are not sucked into the suction air stream by means of the paper suction device, it is also provided that the bottom of the receiving space 3a is designed as a sieve, so that tobacco particles are already on be removed from the committee stream.

The paper suction device 26 has a slightly oblique and enlarged in cross-section section 28, from which a tubular side outlet 30 branches off again downwards in the direction of the pivoting conveyor pot 3 and the receiving space 3a of the pivoting conveyor pot 3.

The enlargement of the cross section of the paper suction device in the section 28 leads to a reduction of the speed of the air flow inside the paper suction device 26. Since the speed of the air flow is reduced at this point, cigarettes 20, 21, which are unintentionally sucked into the paper suction device 26, paper pieces and paper strips 22 are separated in the air stream by the heavier cigarettes are no longer entrained in the slowed air flow.

The cigarettes descend, following gravity, down to where the lateral exit 30 is located at the bottom of the chamfered section 28. In this there is no air flow or only a very small air flow, which also does not hold the cigarettes 20, 21, so that they fall in a direction 30 'from the Papierabsaugvorrichtung 26 out on the bottom of the receiving space 3a of the vibrating conveyor pot 3. From there they are in turn conveyed on the spirally rising transport path 3b in the direction of the outlet 5, from where they reach a reduction device and a separating device for tobacco particles and torn wrapping papers of cigarettes.

All of these features, including the drawings to be taken alone as well as individual features that are disclosed in combination with other features are alone and in combination regarded as essential to the invention. Embodiments of the invention may be accomplished by individual features or a combination of several features.

Bezuaszeichenliste

1

Cigarette maker

2

Arrangement for the recovery of tobacco

3

Vibratory conveying pot

3a

accommodation space

3b

transport path

4

Elevator

4 '

conveying direction

5

outlet

5 '

exit direction

5a

sheet metal plate

6

Conveyor belt

6 '

transport direction

7

high conveyor

7 '

conveying direction

8th

Siebförderrinne

8th'

conveying direction

8a

pivot member

8a '

pan direction

8b

scree

8c

outlet

8d

exit

8e

Drive motor for sieve conveyor trough

9

roll arrangement

9a

roller

10

manifold

11

Vibrationsrinne

11 '

transport direction

20

imposed cigarette

21

partially processed cigarette

22

piece of paper

25

gutter

26

Papierabsaugvorrichtung

27

entrance opening

28

oblique section with enlarged cross-section

29

Exit or transition

29 '

removal direction

30

lateral exit

30 '

conveying direction

Claims (11)

Process for the recovery of tobacco in or from a cigarette manufacturing machine (1) of the tobacco processing industry, wherein scrap material (20, 21, 22) conveyed into a vibrating conveyor pot (3) and further in the vibratory conveying pot (3) on a spirally rising transport path (3a) is promoted, wherein in the vibrating conveyor pot (3) and / or in an outlet (5) of the vibrating conveyor pot (3) from the waste material (20, 21, 22) tobacco is discarded and / or cigarettes (20, 21) via the outlet (5 ) of the vibrating conveyor pot (3) are conveyed to a comminution device, characterized in that by means of a pressurized or acted upon by vacuum tubular Papierabsaugvorrichtung (26) waste material (20, 21, 22), in particular paper pieces (22), from the vibrating conveyor pot (3), in particular from the transport path (3a), sucked off and removed becomes. A method according to claim 1, characterized in that in the paper suction device (26) scrap material (20, 21), which is heavier than paper pieces (22) to be sucked, is conveyed back through a lateral exit (28) into the vibrating conveyor pot (3). A method according to claim 2, characterized in that for the separation of different heavy broke materials (20, 21, 22) in the Papierabsaugvorrichtung (26), a speed of in the Papierabsaugvorrichtung (26) prevailing air flow is partially reduced by a cross-sectional enlargement of the Papierabsaugvorrichtung (26). Arrangement (2) for the recovery of tobacco in or from a cigarette manufacturing machine (1) of the tobacco processing industry with a vibrating conveyor pot (3) for conveying scrap material (20, 21, 22) of the cigarette manufacturing machine (1), wherein a feeding device (2, 25 ) is provided for feeding waste material (20, 21, 22) to the vibrating conveyor pot (3) and the vibrating conveyor pot (3) a spirally rising transport path (3b) and a substantially tangentially to the transport path (3b) adjoining outlet (5) for waste material (20, 21, 22), characterized in that a tubular Papierabsaugvorrichtung (26) for scrap material (20, 21, 22) is provided, which is above the transport path (3b) of the vibrating conveyor pot (3) and for generating a suction air stream can be acted upon by negative pressure. Arrangement (2) according to claim 4, characterized in that the paper suction device (26) has a, in particular tubular, lateral outlet (30) which is arranged above the vibrating conveyor pot (3), in particular above a receiving space (3a) of the vibrating conveyor pot (3). Arrangement (2) according to claim 5, characterized in that the lateral outlet (30) is arranged on an underside of an inclined section (28) of the tubular paper suction device (26). Arrangement (2) according to claim 5 or 6, characterized in that the lateral outlet (30) is arranged in a section (28) of the tubular paper suction device (26) which has an enlarged cross-section. Arrangement (2) according to one of claims 4 to 7, characterized in that a, in particular pneumatic, conveying device for in the paper suction device (26) discarded reject material (22) is provided. Arrangement (2) according to one of claims 4 to 8, characterized in that a bottom of the receiving space (3a) of the vibrating conveyor pot (3) comprises a sieve. Use of a tubular paper suction device (26) for extracting scrap material (22) from a vibrating conveyor pot (3) of an arrangement (2) for recovering tobacco into or out of a cigarette manufacturing machine (1) of the tobacco processing industry. Cigarette manufacturing machine (1) of the tobacco processing industry with an arrangement (2) for the recovery of tobacco according to one of claims 4 to 9.

Images