EP2692251A1 - Device and method for manufacturing multi-segment filter rods for the tobacco processing industry - Google Patents

Abstract

The method involves wrapping a wrapper paper strip (13) together with multi-segment filters (2,3) of multi-segment filter rod (1). The adhesive glue (9) is coated on overlapping region of wrapper paper strip so as to adhesively bond the paper strip with multi-segment filters. The multi-segment filters are cut from multi-segment filter rod along section line (6), as cutting segment. The additional glue (7,7',8) is provided on cutting segment before the multi-segment filters are wrapped with wrapper paper strip. An independent claim is included for a device for manufacturing multi-segment filter rods.

Description

The invention relates to a method for producing multi-segment filter rods of the tobacco-processing industry, wherein multifilter segments are assembled into at least one multi-segment filter strand and wrapped with a wrapping paper strip which is glued by means of a glue line in an overlapping region of the wrapping paper strip with itself and the coated Multifiltersegmenten, wherein a Part of the multi-segment filter cutting segments that are cut to cut multisegment filter rods from the multi-segment filter strand are apparatus for manufacturing multi-segment filter rods of the tobacco processing industry, comprising a multi-segment filter or group of multi-segment filters, a gluing device for gluing a multi-segment filter strand cover strip, a strand forming device for producing at least one of the wrapping paper strips enveloped A multi-segment filter strand from the multifilter segments and a trimming device for trimming multi-segment filter rods from the multisegment filter strand, wherein a portion of the multifilter segments are cutting segments that are severed to cut to length multifilament rods and a machine of the tobacco processing industry.

In modern multifilament machines, such as the machines sold under the names MULFI-ME or MERLIN by the Applicant, filters made of segments of different materials are assembled, grouped and formed into a multi-segment filter strand which is wrapped with a wrapping paper comprising the filter segments assembled into a strand wrapped and held together. Subsequently, multi-segment filter rods of multiple use length are cut to length and further processed in a filter attachment machine.

The groups of Multifiltersegmenten or multi-segment filter rods can already be wrapped before the strand formation by a paper strip of low density to prevent falling apart of these groups together.

In order to join the segments to the wrapping paper which is being beaten to form a strand about the segment strand, a cold glue, and optionally also a hot glue, is usually applied to the wrapping paper. This is done with a contact nozzle.

Laboratory tests show that the first glued paper absorbs the largest amount of water or moisture.

It has also been found that those segments that when cutting multisegment filter rods from the multisegment filter strand, they are subjected to heavy stress during the cutting process. In some cases, this results in the adhesion of the cut segments, referred to as "cutting segments" in the present patent application, being loosened or completely dissolved on the wrapping paper strip. Such cut cutting segments may rotate in the wrapping paper strip or subsequently fall out of the wrapping paper strip. This leads to a disability of the machine, to increased rejects and possibly to production stoppage.

The loss of the cutting segments takes place, in particular, in a subsequent step in a filter-making machine, for example at the location of a push-in drum, in which the cross-axially conveyed multisegment filter rods are accelerated longitudinally. In this case, the adhesion and adhesion are not sufficient for slowing down the filters in the buffing drum.

In contrast, the present invention has the object to increase the reliability of a corresponding machine and to prevent falling out of cut cutting segments from the cut to length Multisegmentfilterstäben.

This object is achieved by a method for producing multi-segment filter rods of the tobacco-processing industry, wherein multifilter segments are assembled to form at least one multi-segment filter strand and wrapped with a wrapping paper strip which is glued to itself and the coated multifilter segments by means of a glue trace in an overlapping region of the wrapping paper strip. being part of the multi-segment filter Cutting segments are cut through to cut multisegment filter rods from the multi-segment filter strand formed by applying additional glue to the cutting segments prior to wrapping the multi-segment filter strand with the wrapping paper strip and / or the wrapping paper strips in cutting segment regions of the wrapping paper strip which wrap cutting segments on the wrapped multi-segment filter strand ,

The inventive method is based on the basic idea that an additional application of glue leads only to the connection between cutting segments and wrapping strips in the region of the cutting segments, optionally on the cutting segments directly or on the wrapping strip or on both, to a stronger adhesion between cutting segments and wrapping strips, what a later falling out of the cutting segments from the wrapping paper effectively prevented. Since the additional glue application takes place only on the areas of the cutting segments and not on the entire multi-segment filter rod, the additional material costs of glue and the additional contamination of the machine are low.

Due to the additional application of glue, the cutting segment in the wrapping paper is well secured against the stress when cutting multisegment filter bars from the multisegment filter strand. Since now no more cutting segments fall out of the Multisegmentfilterstäben, a high running safety of the machine is guaranteed and there are less downtime of the machine than before.

The additional application of glue preferably takes place without contact or in contact. In the case of a contactless glue application are the pollution The machine and the cleaning effort is very low, since no glue lugs form on a glue nozzle. A glue application in contact with the segment or the wrapping paper strip also offers a high order security.

The additional application of glue preferably takes place with cold glue and / or with hot glue. Thus, the additional glue application can be adapted to the requirements of the product and / or the manufacturing process.

Preferably, the additional application of glue is in the form of a point glue application, in the form of several punctiform glue applications and / or in the form of an intermittent glue trace on the cutting segments and / or in the cutting segment regions of the wrapping paper strip, wherein the additional glue application is synchronized in particular to a machine cycle. These various forms of glue application, which are synchronized in particular to the machine cycle, each provide a secure adhesion of the two halves of the cutting segment on the wrapping paper after cutting the cutting segment.

The or an additional glue application is preferably carried out on the cutting segments before assembling a multi-segment filter strand or on the multisegment filter strand. This makes it possible, for example, to equip existing machines with additional Schnittbeleimungsvorrichtungen in places where there is space for this.

Advantageously, the or an additional application of glue takes place during a conveying of groups of multifilter segments, in particular on an accelerator drum or a loading wheel. At these points, in particular with suitable synchronization, very easy to accomplish an additional glue application.

Preferably, a glue application is omitted to a position of a missing multifilter segment or a missing or incomplete group of multifilter segments if its incompleteness or absence is determined. This saves glue and prevents contamination of the machine. In particular, in a synchronization to a machine cycle can be determined exactly which Beleimungstakt must be omitted.

The object on which the invention is based is also achieved by a device for producing multi-segment filter rods of the tobacco processing industry, comprising a conveying device for multi-segment filters or groups of multi-segment filters, a gluing device for gluing a wrapping strip for a multi-segment filter strand, a strand forming device for producing at least one wrapping paper strip enveloped A multi-segment filter strand from the multi-filter segments and a cutting device for cutting multi-segment filter rods from the multi-segment filter strand, wherein a part of the multi-filter segments are cutting segments which are severed to cut to length Multifilterstäben, which is further characterized in that a Schnittbeleimungsvorrichtung is included, for applying an additional glue application to the Cutting segments before wrapping the Multisegmentfilterstrangs with the wrapping paper strip and / or on the wrapping paper strip in cutting segment regions of the wrapping paper strip, which encase cutting segments on the coated multi-segment filter strand, is formed and arranged.

The corresponding sub-devices of the device according to the invention are in particular designed to each individual sub-steps to carry out the inventive method described above. With the device according to the invention it is also possible to provide the region of the cutting segments either on the wrapping paper strip and / or on the cutting segments themselves with an additional glue application to make the cutting process safer and to prevent subsequent falling out of parts of the cutting segments from the cut multi-segment filter rods ,

Here, preferably, the gluing device is additionally designed as a Schnittbeleimungsvorrichtung. This means that the gluing device is both designed to apply a continuous glue line to the wrapping paper strip as usual, so that it can be glued to itself after wrapping the multisegment filter strand in the overlapping area, and additionally either a glue application roller or one or more contactless or having contacting nozzles, which are formed for additional application of glue in the areas of the wrapping paper strip, which subsequently encase the cutting segments.

Preferably, the Schnittbeleimungsvorrichtung is designed and arranged for contactless or contacting additional glue application.

Also advantageously, the Schnittbeleimungsvorrichtung is designed for glue application in the form of a point glue application, in the form of multiple punctiform glue orders and / or an intermittent glue trace on the cutting segments and / or in the cutting segment areas of the wrapping paper strip and / or controlled, in particular synchronized to a machine cycle.

The incision gluing device is preferably arranged along a conveying path of the multisegment filters or groups of multi-segment filters, in particular associated with an accelerator drum or a loading wheel. This means that the Schnittbeleimungsvorrichtung is arranged in the vicinity of the accelerator drum or the loading wheel, to glue the cutting segments during conveyance on this conveyor.

Further advantageously, the Schnittbeleimungsvorrichtung is arranged on a conveying path of the wrapping paper strip or the Multisegmentfilterstrangs at a location where the multi-segment filter strand is not yet wrapped with the wrapping paper strip.

Advantageously, a mis-segment recognition device is included and the control device is designed to prevent a glue application to a position of a missing multifilter segment or of a missing or incomplete group of multifilter segments or of a missing multisegment filter rod.

Finally, the object underlying the invention is also achieved by a machine of the tobacco-processing industry, in particular filter rod machine, with a device according to the invention described above.

According to the invention, at least one multi-segment filter strand is formed. To increase the production capacity, two-strand or multiple-strand processes and machines are also included according to the invention. For the multiple strands, the same process and device features apply in multiple fashion as for a single strand machine.

The features, properties and advantages mentioned with regard to the individual subject matter of the invention, that is to say the method, the device and the machine, apply correspondingly to the respective other subject matter of the invention, since these correspond to one another and relate to one another.

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

einen Multisegmentfilterstrang mit erfindungsgemäßem Leimauftrag,

Fig. 2

eine schematische Darstellung von Teilen einer erfindungsgemäßen Vorrichtung,

Fig. 3

eine schematische Darstellung von Teilen einer erfindungsgemäßen Vorrichtung,

Fig. 4

eine schematische Darstellung von Teilen einer weiteren erfindungsgemäßen Vorrichtung und

Fig. 5

eine schematische Darstellung eines Multifiltersegmentstrangs mit erfindungsgemäßem Leimauftrag.

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 multisegment filter strand with an inventive glue application,

Fig. 2

a schematic representation of parts of a device according to the invention,

Fig. 3

a schematic representation of parts of a device according to the invention,

Fig. 4

a schematic representation of parts of another device according to the invention and

Fig. 5

a schematic representation of a Multifiltersegmentstrangs with inventive glue application.

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 a section of a multi-segment filter strand 1 is shown, which is processed by a machine according to the invention. The illustrated section of the multi-segment filter strand 1 comprises two multifilter segments 2, 3. The multi-segment filter strand 1 is enveloped by a wrapping paper strip 13 which holds together the segments 2, 3 grouped therein. A multifilter segment is designed as a cutting segment 2. A section line 6 for a subsequent cutting of multi-segment filter rods is indicated.

In order to ensure adherence to the wrapping paper strip 13 and the adherence of the wrapping paper strip 13 to itself, a continuous glue trace 9 is applied to the wrapping paper strip 13 in the region of its overlap with itself. In addition, a glue application is applied to the multisegment filter strand 1 without contact. This glue application can be present in the form of glue dots 7 'or of intermittent glue traces 8. The glue application 7, 8 can be applied contactless, so that contamination of the machine is omitted here. The additional glue application 7 ', 8 takes place only at the location of the cutting segment 2, either on the cutting segment 2 itself or on a cutting segment region of the wrapping paper strip 13, that is to say that region of the wrapping paper strip 13 which encloses a cutting segment 2.

In Fig. 2 the process of the invention is shown schematically by an example. A wrapping paper strip 13 is conveyed in a conveying direction 14 shown by an arrow over several Downstream of the deflection roller 15 "successively multi-segment groups 1 'of a loading wheel 10, which rotates in the direction of rotation 12, placed on the wrapping paper strip 13 and assembled into a multi-segment filter strand 1. Subsequently, the wrapping paper strip 13 is wrapped around the multi-segment filter strand 1 in a formatting device (not shown) and bonded to itself, so that the strand is completely enveloped by the wrapping paper. This is followed by an unillustrated cutting or knife device.

The insert 10 has in Fig. 2 Not shown segment bar holder, which maintain the horizontal orientation of the held multi-segment filter rods 1 during rotation of the insert 10. This is achieved by corresponding gear, not shown.

Below the loading wheel 10, a Schnittbeleimungsvorrichtung 44 is shown schematically in the form of a glue nozzle. This is arranged so that it makes a contactless application of glue to each cutting segment 2 of each multi-segment group 1 ', which is conveyed past the Schnittbeleimungsvorrichtung 44. At this point, a glue application point-like, intermittently in the longitudinal direction of the multi-segment group 1 'or continuously in the longitudinal direction of the multi-segment group 1' take place.

Since the glue application is made in synchronization with a machine cycle from below, the glue wetted spot is the one which makes contact with the wrapping paper strip 13 so that each cutting segment 2 of each multi-segment group 1 'is securely adhered to the wrapping paper strip 13.

In Fig. 3 a first example of a device according to the invention is shown schematically. It is an accelerator drum 20 is shown, which rotates in the direction of rotation 23, ie according to Fig. 3 counterclockwise. The accelerator drum has at its periphery a plurality of receptacles 21 for multi-segment groups 1 ', in which they are held for example by suction. For the sake of clarity, in Fig. 3 the multi-segment groups 1 'not shown. However, they sit in operation in each case in a receptacle 21 of the accelerator drum 20. In the course of the promotion on the accelerator drum 20, the cross-axially promoted multi-segment groups 1 'are guided past a Schnittbeleimungsvorrichtung 31. This comprises two glue supply units 32, 33, z. B. valves, each ending in a glue nozzle 34, 35. Each of the glue supply units 32, 33 is also connected to a glue supply hose 36, 37 which supplies the glue supply units 32, 33 or the glue nozzles 34, 35 with glue from a glue supply (not shown). This can be hot glue or cold glue. The glue nozzles 34, 35 are directed to the location along the conveying path of the multi-segment groups 1 'in the receptacles 21, at which the glue application is to take place. The illustrated Schnittbeleimungsvorrichtung 31 is therefore particularly suitable for a punctual application of glue. If the glue application takes a little longer, glue strips can also be generated transversely to the longitudinal direction of the multi-segment groups 1 '.

In Fig. 4 is a further embodiment of a device according to the invention shown, which also with the device according to Fig. 3 can be combined.

At the right edge of the picture Fig. 4 is the accelerator drum 20 off Fig. 3 shown in detail with their shots 21. The accelerator drum 20 in turn rotates in accordance with the direction of rotation 23 counterclockwise.

Slightly above the central upper image area in Fig. 4 there is a transfer point at which the multisegment groups 1 ', which may also be wrapped in paper, are transferred from the receptacles 21 of the accelerator drum 20 to the segment bar holder 11 of the insert wheel 10, which rotates in the direction of the arrow 12 and the multisegment groups 1' of the accelerator drum 20 takes over. In this case, the horizontal orientation of the multi-segment groups 1 'is maintained by a counter-rotating rotation of the segment rod holders 11 effected by means of a transmission. The initially vertically downward transaxial promotion in the segment rod holder 11 a multi-segment group 1 ', one of which is shown as an example, is thereby converted into a longitudinal axial promotion in the lower reversal point. At this point, a transfer to a wrapping paper strip 13, the conveying direction 14 is also shown with an arrow. The multi-segment groups 1 'are guided tangentially to the wrapping paper strip 13 at the transfer point and handed over there. For this purpose, for example, a suction at the segment rod holders 11 are turned off. There may also be a supporting glue trace in the wrapping paper strip 13 for the inserted segments.

Before the transfer point, ie upstream of the transfer point, are in the embodiment according to Fig. 4 two glue supply units 42, 43 with two glue nozzles 44, 45 shown. Since, at the location of the glue nozzles 44, 45, the multisegment groups 1 'on the loading wheel 10 are guided past substantially longitudinally, punctiform, intermittent or continuous glue application tracks, which run in the direction of the line, can be applied. Also in this case, the application of the glue application is preferably carried out on the underside of the cutting segments 2, which come into contact with the wrapping paper strip 13 and thus secures the adhesion.

This type of gluing is largely pollution-free, so that the machine can be operated longer before it has to be cleaned again, which also increases running safety.

The in Fig. 4 cladding paper strip 13 shown in detail is provided at its edge with a previously applied glue trace, which may have been applied, for example, by means of a glue application device 16 upstream of the loading wheel 10, as in Fig. 2 shown. In this case, the glue trace on the wrapping paper strip 13 and the additional glue applications 7, 7 ', 8 on the multi-segment groups 1' and the wrapping strip 13 cooperate to ensure secure strand formation and secure bonding of the wrapping paper strip 13 to itself and to the multi-segment groups 1 'And especially the cutting segments 2 to ensure.

In Fig. 5 a section of a Multifiltersegmentstrangs 1 with inventive glue application in different variants is shown schematically. The multisegment filter strand 1 has essentially two different types of segments, namely the darkly illustrated multifilter segments 3 and the brightly illustrated multifilter segments 2, 3 '. The difference between the multifilter segments 2, 3 'is that the segments, which are provided with the reference numeral 2, are cutting segments. Dashed lines show cut lines 6 which divide these cutting segments 2 into two halves. Other segment types may additionally be present in the multi-segment filter strand 1.

At the three marked in each case with broken circles points cutting segments 2 are shown, which have different types of additional glue application. The multi-segment filter strand 1 initially has a continuous glue trace 9, which passes through the entire multi-segment filter strand 1. This continuous glue line 9 is the one which has been applied to the wrapping paper strip 13 so that an overlapping portion of the wrapping paper strip 13 is adhered to the overlapping part of the wrapping paper strip 1 after wrapping the multi-segment filter strand 1. At the same time, this continuous glue trace 9 ensures adhesion of the segments 2, 3, 3 'in the wrapping paper strip.

In the two outermost areas highlighted by circles, an intermittent glue trace 8 is applied to the region of the cutting segment 2. This intermittent glue trace 8 assists the adhesion between wrapping paper and cutting segment 2.

In the left central highlighted area, which is shown with a section line 6 and a cutting device 4 in the form of a cutting knife, a single glue application point 7 is shown, which lies on the cutting line 6. This ensures a secure adhesion of both halves of the underlying cutting segment 2 in the wrapping paper strip by the individual glue application point 7.

In the right of the two central highlighted areas, two glue application points 7 'are shown instead, of which in each case one is located centrally in the respective half of the cutting segment 2, which is separated from one another by the cutting line 6.

These different glue application forms consume little glue, there is very little contamination of the machine and the process reliability or running safety of the machine is increased compared to the prior art.

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.

LIST OF REFERENCE NUMBERS

1

Multi-segment filter rod

1'

Multi-segment Groups

2

cutting segment

3

Multi filter segment

4

Cutting device

6

intersection

7

spot of glue

7 '

Mehrfachleimpunkte

8th

intermittent glue trace

9

continuous glue trace

10

insertion wheel

11

Segment rod holder

12

direction of rotation

13

Wrapping paper strips

14

conveying direction

15-15 "

idler pulley

16

glue application

16, 17

Leimversorgungseinheit

18, 19

glue nozzle

20

accelerating drum

21

admission

23

direction of rotation

31

Schnittbeleimungsvorrichtung

32, 33

Leimversorgungseinheit

34, 35

glue nozzle

36, 37

Leimversorgungsschlauch

42, 43

Leimversorgungseinheit

44 - 44 "', 45

Schnittbeleimungsvorrichtung

Claims (15)

A method of making multi-segment filter rods of the tobacco processing industry, wherein multifilter segments are assembled into at least one multi-segment filter strand (1) and wrapped with a wrapping paper strip (13) secured to itself and by means of a glue line (9) in an overlapping region of the wrapping paper strip (13) the coated multi-filter segments (2, 3, 3 ') is glued, wherein a part of the multi-segment filters (2, 3, 3') are cutting segments (2) which are cut to cut multisegment filter rods from the multi-segment filter strand (1), characterized that the cutting segments (2) before wrapping the Multisegmentfilterstrangs (1) with the wrapping paper strip (13) and / or the wrapping paper strips (13) in cutting segment areas of the wrapping paper strip (13) on the coated multi-segment filter strand (1) cutting segments (2) envelop, additional glue application (7, 7 ', 8) received. A method according to claim 1, characterized in that the additional glue application (7, 7 ', 8) takes place without contact or in contact. A method according to claim 1 or 2, characterized in that the additional application of glue (7, 7 ', 8) takes place with cold glue and / or with hot glue. Method according to one of claims 1 to 3, characterized in that the additional glue application (7, 7 ', 8) in the form of a point glue application (7), in the form of a plurality of punctiform glue applications (7') and / or in the form of an intermittent glue trace (8) takes place on the cutting segments (2) and / or in the cutting segment regions of the wrapping paper strip (13), wherein the additional glue application (7, 7 ', 8) is synchronized in particular to a machine cycle. Method according to one of claims 1 to 3, characterized in that the or an additional glue application (7, 7 ', 8) on the cutting segments (2) before assembling a Multisegmentfilterstrangs (1) or at the Multisegmentfilterstrang (1). Method according to claim 5, characterized in that the or an additional glue application (7, 7 ', 8) takes place during a conveying of groups (1') of multifilter segments (2, 3, 3 '), in particular on an accelerator drum (20). or a loading wheel (10). Method according to one of claims 1 to 6, characterized in that when a lack of multifilter segments or a group of multifilter segments is detected, a glue application to a position of the missing multifilter segments or group of multi-segment filters is omitted. Device for producing multi-segment filter rods of the tobacco-processing industry, comprising a conveying device (10, 20) for multi-segment filters (2, 3, 3 ') or groups of multi-segment filters, a gluing device (16) for gluing a wrapping strip (13) for a multi-segment filter strand (1 ), a strand forming device for producing at least one multisegment filter strand (1) from the multifilter segments (2, 3, 3 ') enveloped by the wrapping paper strip (13) and a cutting device (4) for cutting multisegment filter rods from the multi - segment filter strand (1), wherein a part of the Multifiltersegmente (2, 3, 3 ') cutting segments (2) which are cut to cut to length of Multifilterstäben, characterized in that a Schnittbeleimungsvorrichtung (16, 31, 44 - 44 "', 45) is included, which is for applying an additional Glue order (7, 7 ', 8) on the cutting segments (2) before wrapping the Multisegmentfilterstrangs (1) with the wrapping paper strip (13) and / or the wrapping paper strip (13) are formed and arranged in cutting segment regions of the wrapping paper strip (13) which encase cutting segments (2) on the coated multi-segment filter strand (1). Apparatus according to claim 8, characterized in that the gluing device (16) is additionally designed as Schnittbeleimungsvorrichtung. Apparatus according to claim 8 or 9, characterized in that the Schnittbeleimungsvorrichtung (16, 31, 44 - 44 "', 45) for contactless or contacting additional glue application (7, 7', 8) is formed and arranged. Device according to one of claims 8 to 10, characterized in that the Schnittbeleimungsvorrichtung (16, 31, 44 - 44 "', 45) for the glue application in the form of a point glue application (7), in the form of a plurality of punctiform glue orders (7') and / or an intermittent glue trace (8) is formed and / or controlled on the cutting segments (2) and / or in the cutting segment regions of the wrapping paper strip (13), in particular synchronized to a machine cycle. Device according to one of claims 8 to 11, characterized in that the Schnittbeleimungsvorrichtung (16, 31, 44 - 44 "', 45) along a conveying path of the multi-segment filters (2, 3, 3') or groups (1 ') of multi-segment filters ( 2, 3, 3 '), in particular an accelerator drum (20) or a loading wheel (10) is assigned. Device according to one of claims 8 to 12, characterized in that the Schnittbeleimungsvorrichtung (16, 31, 44 - 44 "', 45) on a conveying path of the wrapping paper strip (13) or the Multisegmentfilterstrangs (1) is arranged at a location where the multi-segment filter strand (1) is not enveloped yet with the wrapping paper strip (13). Device according to one of claims 8 to 13, characterized in that a Fehlsegmenterkennungseinrichtung is included and the control device is formed, a To prevent glue application to a position of a missing multifilter segment or a missing group of multifilter segments. Machine of the tobacco processing industry, in particular filter rod machine, with a device according to one of claims 8 to 14.

Images