EP2448436B1 - Conduit cheek for a rod making device of the tobacco processing industry - Google Patents

Description

The invention relates to a channel cheek one, in particular two or more multi-lane, strand conveyor of a machine of the tobacco processing industry, with an upper side, with a lower side, with an outer side and with a strand conveying channel facing inside.

Furthermore, the invention relates to a device for conveying at least one strand of material of the tobacco-processing industry, wherein a strand conveying channel is provided for the material strand to be formed or formed.

A "material strand of the tobacco-processing industry" is understood to mean, in particular, a fiber strand, preferably of cut tobacco.

For example, in DE 197 33 443 A1 or EP 1 169 926 B2 channel cheeks a stranding machine of the tobacco processing industry described. Such channel cheeks serve essentially to line the fiber strand leading channel, also called tobacco channel or strand conveying channel, in particular to define its width. In particular, the channel cheeks or channel walls in a cigarette rod machine serve to accumulate the fiber strand or tobacco rod or tobacco, which is supplied in the form of a shower to the top of a tobacco channel forming and serving as a strand conveyor belt in a strand formation zone and from this optionally through to remove an excess removal device, the so-called trimmer, in the form of a strand.

As a strand conveyor is used in cigarette rod machines usually the lower strand one of its rear side acted upon by negative pressure suction belt, so that these types of conveyors are also referred to as Saugstrangförderer. The length of the conveyor line of the Saugstrangförderers and the high speed of modern extrusion machines make high demands on the running of the strand conveyor directly or indirectly influencing parts of the device.

Out WO 2005/096851 A1 There is also known a method and apparatus for making a smokable article wherein tobacco is peeled and an extrudate is formed, wherein the extrudate is applied to the whipped tobacco.

Out DE 33 11 886 C2 For example, there is known a process for producing a cigarette in which an admixture of expanded tobacco pulp is applied to a tobacco layer. In addition, it is disclosed that the expandable tobacco pulp may also be provided with a flavorant, for example menthol.

According to EP 0 405 929 A2 is intended to add a liquid strand with additives to cigarette rods, wherein a nozzle is arranged in the region of a Aufschauerbereichs of tobacco, which serves to introduce the fluid into the tobacco.

Out US 2 543 277 A In addition, an apparatus and a method for producing a tobacco rod are known, wherein at predetermined locations of the tobacco rod, a fire-retardant material in the tobacco rod and on the wrapping material is applied.

Furthermore, in WO-A-98/36650 discloses a cigarette rod making machine, the cigarette rod making machine having a through guide with two guide rails for a suction belt. The guide rails have bores so that particulate smoke modifying agents are introduced into a strand of material via a feed tube and the bore communicating with the feed tube.

In EP-A-0 558 447 In addition, a strand forming apparatus is shown, wherein after formation of a tobacco rod and supplying a wrapping strip before the inlet of an inlet funnel by means of an upper-side injection line the partially wrapped tobacco rod from above additives are supplied.

Based on this prior art, the object of the present invention is to improve the addition of an additive to a, in particular quirked, material strand of the tobacco-processing industry, wherein the constructive Effort should be kept as low as possible.

This object is achieved by a channel cheek one, in particular two- or multi-lane, strand conveying a machine of the tobacco industry, with an upper side, with a bottom, with an outside and with a strand conveying channel facing inside, which is further developed by the channel cheek a, in particular designed as a receiving opening, for receiving a nozzle body of a nozzle device, wherein the opening is formed obliquely in the channel cheek such that the inlet opening of the opening for the nozzle body in the outer side opposite the outlet opening of the opening for the nozzle body in the Strangförderkanal facing inside in the longitudinal direction of the channel cheek transversely, in particular at an angle not equal to 90 ° to the longitudinal extension of the channel cheek, offset from one another and upstream in the strand conveying direction, wherein the channel cheek for seitl Ien leadership of a formed or formed material strand along the strand conveying channel is provided.

Furthermore, an embodiment of the channel cheek is characterized in that the inlet opening of the opening for the nozzle body in the outer side opposite the outlet opening of the opening for the nozzle body in the strand conveying channel facing inner side to the underside of the channel cheek is formed closer. Thus, the outlet opening is arranged on the inside opposite the inlet opening on the outside of the channel cheek in the vertical direction higher.

In total, a channel cheek or a channel wall of a strand conveyor of a machine of the tobacco processing industry, provided with a strand conveyor, in particular Saugstrangförderer, facing top and with a or the strand conveyor, in particular Saugstrangförderer, opposite bottom and with a or the inner side of the strand conveyor channel is formed. The outside and inside of the channel cheek extend in the longitudinal direction of the channel cheek.

Moreover, it is provided according to an advantageous embodiment, that the channel cheek has a recess into which a complementary shape holding device for a nozzle device is inserted or used, wherein the holding device has a receiving opening for the nozzle device, wherein in the receiving opening of the holding device, a nozzle body of the nozzle device is introduced or can be introduced.

The invention is based on the idea that on a channel cheek a simple and quick replacement of a nozzle device is made possible, in particular, the accessibility of the nozzle device is improved because, for example, no longer a complete Channel cheek must be removed on a Saugstrangfördereinrichtung a strand machine. Since both the holding device is releasably connected to the channel cheek and the nozzle device is detachably connected to the holding device, it is also possible to exchange the nozzle device in a simple manner, for nozzle nozzles provided only a holding device is required.

The channel cheek is provided for the lateral guidance of a material strand to be formed or formed, in particular tobacco rod, on a suction belt conveyor or the like along the strand conveying channel, wherein the outside of the holding device facing the inside of the channel wall or channel cheek thereby forms a correspondingly smooth guide surface for the container Material strand forms, so that no projection or no uneven surface arises during the transition from the guide surface of the channel cheek or inside the channel cheek to the guide surface or outside of the holding device.

In addition, an additive is introduced through a nozzle opening of the nozzle device in that part of the material of the strand formed, which is to be used for further processing into rod-shaped products.

In the case of a stranding machine, the strand conveying channel for a strand generally comprises two channel walls or channel cheeks arranged at a predetermined spacing, wherein the nozzle body of the nozzle device is arranged in the retaining device, wherein the retaining device is detachably arranged in the recess of the channel cheek. Within the scope of the invention For example, the nozzle device may comprise an extrusion nozzle, by means of which, in particular, preferably a fine atomization of an additive is made possible. The additive may include, for example, a binder, an additive, a flavoring, a fire promoter and / or a fire retardant.

In addition, a further development of the channel cheek is characterized in that the recess is formed on the side facing away from a strand conveyor on the channel cheek. As a result, a simple replacement of the holding device or the nozzle device is made possible in the holding device, since the side of the strand conveyor facing away underside of the channel cheek is easily accessible.

Furthermore, it is advantageous if at least one or more positioning devices for the holding device of the nozzle device, preferably on the underside of the channel cheek facing away from a strand conveyor or suction strand conveyor, are provided, whereby the holding device can be aligned or aligned in a simple manner during assembly.

For this purpose, it is further provided that as positioning at least two positioning sockets, preferably in the recess and / or on the underside of the channel cheek are provided, in particular the positioning sockets are formed at a predetermined distance along the longitudinal side of the channel cheek. The positioning bushings in the recess cooperate with corresponding bushes or bores on or in the holding device. Overall, thereby a secure positioning of the holding device, for example, after an expansion in a Saugbandwechsel the conveyor device, allows when the holding device is used together with the nozzle device.

Furthermore, an embodiment of the channel cheek is characterized in that the nozzle body has a conveying channel for the additive to be applied to the material strand, wherein the conveying channel is rectilinear and emerges from the inside of the channel cheek for strand conveying channel and opens, wherein the conveying channel is formed in that the conveying channel is arranged obliquely to an inner side facing a strand conveying channel at an acute angle, wherein the conveying channel is arranged obliquely to the conveying direction of the strand conveying device or to the conveying direction of the strand in the strand conveying channel at an acute angle. In this way, an additive is selectively introduced into the formed material strand in the conveying channel, wherein the outlet direction of the additive from the conveying channel on the strand conveying channel is formed so that the additive is aligned laterally obliquely from below to the conveying direction of the material strand in the strand conveying channel and in the conveying direction of the material strand.

Furthermore, it is advantageous if the nozzle body has a delivery channel, which is connected on the pressure side with a plurality of delivery lines of a plurality of terminals, so that via a respective delivery line of a terminal, preferably liquid or gaseous medium, the delivery channel of the nozzle body is zuförderbar. For example, it is thus possible to supply atomizing air via a connection and at the same time via a further connection a liquid to the delivery channel of the nozzle body, so that, for example, menthol or a flavoring agent is introduced by means of a liquid-gas mixture into a formed and conveyed tobacco rod.

In one embodiment, it is also advantageous if the, preferably straight, delivery lines of the connections to the delivery channel of the nozzle body are each bent in a predetermined, preferably blunt, angle, resulting in a kinked arrangement of the connections to the nozzle body or the delivery channel of the nozzle body, so that a total of a space-saving arrangement of the nozzle device is achieved.

In addition, it is advantageous in one embodiment of the channel cheek when a heating device is provided on the recess, so that in the arrangement of the holding device with the nozzle device in the recess, the holding device and / or the nozzle device are heated or heated. Overall, this results in an improved and targeted heating of the nozzle device or of the conveyed in the delivery channel of the nozzle body medium, so that the medium is applied at a predetermined temperature on the material strand.

Furthermore, the object is achieved by a device for conveying at least one strand of material of the tobacco-processing industry, wherein a strand conveying channel or guide channel for the material strand to be formed or formed, preferably tobacco rod, is provided, wherein the strand conveying channel two arranged at a predetermined distance from each other and having opposite channel cheeks, wherein a channel cheek of the strand conveying channel is executed or formed as described above. To avoid repetition, reference is made to the above statements on the channel cheek invention.

In addition, it is advantageous if in the device two or more juxtaposed strand conveying channels or guide channels are provided for in each case one strand of material, wherein a channel cheek of a first strand conveying channel is provided with a nozzle device, wherein the channel cheek of the first strand conveying channel is formed as described above and wherein the nozzle device between the channel cheek of the first strand conveying channel and a channel cheek of the first strand conveying channel adjacent channel cheek of a second strand conveying channel is arranged. This results in a space-saving arrangement of the nozzle device between two strand conveying channels or two guide channels, each having two channel cheeks. Thus, the nozzle device can also be used for example in two-strand cigarette rod machines, namely for the strand seen from the operating side or front of the machine behind. Another essential advantage is that the nozzle device arranged in this way enables or does not hinder the strand formation of the front second strand seen from the operating side or front side of the machine.

In addition, the object is achieved by a machine of the tobacco processing industry, in particular rod making machine of the tobacco processing industry, preferably cigarette rod machine, with a channel cheek as described above or with a device for conveying at least one strand of material as described above. To avoid repetition, reference is expressly made to the above statements.

Moreover, the object is achieved by using a channel cheek in a machine of the tobacco-processing industry, in particular extrusion machine of the tobacco-processing industry, preferably cigarette rod machine, wherein the channel cheek is formed as described above.

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 Unteransicht einer Strangfördereinrichtung einer Zigarettenstrangmaschine im Ausschnitt,

Fig. 2

schematisch einen Querschnitt durch die Strangfördereinrichtung aus Fig. 1 der doppelbahnigen Zigarettenstrangmaschine,

Fig. 3

eine perspektivische Ansicht einer Halteeinrichtung für eine Düsenvorrichtung und

Fig. 4a bis 4c

verschiedene Ansichten einer in eine Haltevorrichtung einsetzbaren Düsenvorrichtung.

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

schematically a bottom view of a strand conveyor of a cigarette rod machine in the cutout,

Fig. 2

schematically a cross section through the strand conveyor from Fig. 1 the double-lane cigarette rod machine,

Fig. 3

a perspective view of a holding device for a nozzle device and

Fig. 4a to 4c

different views of an insertable into a holding device nozzle device.

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.

Fig. 1 schematically shows a bottom view of a strand guiding device 10 of a double-lane and schematically designated cigarette rod machine P. For example, under the name PROTOS a cigarette rod machine of the patent applicant is known.

In Fig. 2 is a cross section through the strand guide device 10 is shown schematically in cross section.

In the double-web cigarette machine P or double-strand machine, the strand guiding device 10 has two strand conveying channels 11 and 12 which are bounded laterally by longitudinal channel cheeks 110, 111 and 120, 121 (cf. Fig. 2 ).

The strand conveying channels 11 and 12 are used in the cigarette rod maker P for shaking and conveying off a tobacco rod, wherein an upper-side Saugstrangförderer 21 and 22 in the strand conveying channels 11 and 12 (see. Fig. 2 ) continuously tobacco is sucked and over its length a growing tobacco shower (not shown here) forms. In this case, the tobacco is the Saugstrangförderern 21, 22 fed in the strand conveying channels 11 and 12 via a corresponding feed device of the cigarette rod maker P.

In this case, the strand conveying channels or Saugstrangkanäle 11, 12 serve for churning and discharging a verhauererten tobacco rod, which is subsequently removed by a trimming device, the excess tobacco from the tobacco rod formed, which are then placed on each cigarette paper strip. In further processing steps, the tobacco strands are wrapped by the respective cigarette paper strips and cut into double-length cigarettes.

In the FIGS. 1 and 2 the conveying directions of the tobacco strands in the suction conveying channels 11 and 12 are denoted by the reference symbols F1 and F2. In Fig. 2 the conveying directions F1 and F2 are perpendicular to the drawing plane.

The strand conveying channels 11 and 12 are bounded laterally by channel cheeks 110, 111 or 120, 121 extending longitudinally in the conveying direction (cf. Fig. 2 ), where in Fig. 1 was omitted for the sake of clarity of the representation of the channel cheek 121.

Between the channel cheek 111 of the strand conveying channel 11 and the channel cheek 120 of the strand conveying channel 12, a nozzle device 30 is arranged by means of which an additive is introduced into the strand conveying channel 12 in the tobacco which has been agitated on the strand conveyor 22 ( Fig. 2 ). Here, a gap 31 is provided on the bottom between the channel cheek 111 and the channel cheek 120, in which the terminals 41, 42 of the nozzle device 30 are arranged (see. Fig. 1 ). On the channel cheek 120 of the strand conveying channel 12, a recess is formed in a section into which a holding device 50 for the nozzle device 30 is inserted with positive engagement on the inside of the channel cheek 120 or guide surface for the tobacco rod stranded in the strand conveying channel 12. The holding device 50 will be described below with reference to Fig. 3 explained in more detail.

The holding device 50 has an obliquely running opening 59, into which the nozzle body of the nozzle device 30 can be inserted or introduced, so that the outlet side of the nozzle device 30 points into the strand conveying channel 12. The nozzle device 30 is, for example, adjusted manually and fastened in the holding device 50 by means of a clamping pin, not shown.

Further, the holding device 50 has at its outer ends via holes 51, 52, in the insertion of the holding device 50 in the recess on the channel cheek 120, the positioning sleeve 123, 124 of the channel cheek penetrate. Subsequently, the holding device 50 by means of screws 53, 54 attached to the underside of the channel cheek 120.

In Fig. 2 Furthermore, a heating device 25 is schematically shown in the channel cheek 120, which is arranged in the region of the recess of the channel cheek 120 for the holding device 50 to heat the nozzle body 33 of the nozzle device 30 to a predetermined temperature and to keep the temperature constant.

In Fig. 3 schematically a perspective view of the holding device 50 for the nozzle device 30 is shown. Here, the view from the back, ie the side facing away from the strand conveying channel 12, shown.

The holding device 50 has a reversed or turned upside down T-shaped base body 55. In the outer regions of the base body 55 are each a bore 51, 52 are formed, in which the positioning bushings of the channel cheek 120 (see. Fig. 1 ) are introduced. In addition, the base body 55 has on the side arms of the inverted T via holes 57, 58, are introduced into the arrangement of the holding device on a channel cheek or on the channel cheek 120 screws, so that the holding device 50 is detachably connected to the channel cheek 120 or . becomes.

In the middle region, the base body 55 has an opening 59 which is inclined towards the outside at an angle to the vertical and at an angle to the horizontal, into which the nozzle body 33 of the nozzle device 30 (cf. Fig. 4a ) is introduced. On the outside of the base body 55, a guide plate 60 is arranged, the fit and positive fit into the recess on the inside of the channel cheek (see. Fig. 1 , Reference numeral 120) is fitted. The guide plate 60 or outer plate has a corresponding bore 61, so that the outer side or the nozzle opening of the nozzle device 30 to the inside of the strand conveying channel 12 shows.

In the FIGS. 4a to 4c different views of a nozzle device 30 are shown, which in the holding device, as shown in Fig. 3 is schematically shown, is introduced and which is provided in the opening provided as a receiving opening for a nozzle body 33 of the nozzle device 30 or formed opening 59. The nozzle device 30 has a nozzle body 33 which is connected to the strand conveying channel 120 (cf. Fig. 1 ) facing outside is bevelled. In addition, the nozzle body 33 has a schematically drawn conveying channel 34 for a medium which is introduced into a tobacco rod in the strand conveying channel 12.

On the side of the nozzle device 30 facing away from the strand conveying channel 12, two connections 41, 42 are connected to the nozzle body 33 via a connection body 35 on the nozzle body 33. The connection piece 35 has chamfered connection surfaces for the connections 41, 42, so that the delivery lines in the connections 41, 42 to the delivery channel 34 in the nozzle body 33 are arranged at an obtuse angle to each other. As a result, the terminals 41, 42 of the nozzle device 30 are formed twisted and bent, resulting in a space-saving arrangement of the nozzle device 30 when arranged in a double-lane strand machine.

Here, the nozzle device 30 is in the strand guide device 10 so twisted and kinked that the nozzle device 30 remains between the channel cheeks and thus does not hinder adjacent sponsored tobacco rod. In particular, air and a liquid are respectively introduced via the connections 41, 42, so that a liquid-gas mixture, eg, menthol air, is introduced into the tobacco rod via the delivery channel 34.

LIST OF REFERENCE NUMBERS

10

Strand guide

11

Strand conveyor channel

12

Strand conveyor channel

21

suction rod

22

suction rod

25

heater

30

nozzle device

31

gap

33

nozzle body

34

delivery channel

35

connector

41

connection

42

connection

50

holder

51

drilling

52

drilling

53

screw

54

screw

55

base body

57

drilling

58

drilling

59

opening

60

guide plate

61

drilling

110

channel cheek

111

channel cheek

120

channel cheek

121

channel cheek

123

positioning socket

124

positioning socket

P

Cigarette-making machine

F1

conveying direction

F2

conveying direction

Claims (14)

1. Conduit side wall (120) of a rod conveying device (10) of a machine (P) of the tobacco processing industry, in particular with two or more lanes, having a top face, a bottom face, an external face and an internal face directed towards a rod conveying duct (12), characterised in that the conduit side wall (120) has an orifice (59) for accommodating a nozzle body (33) of a nozzle device (30), the orifice (59) extending obliquely in the conduit side wall (120) in such a way that the inlet orifice of the orifice (59) for the nozzle body (33) in the external face is disposed opposite the outlet orifice of the orifice (59) for the nozzle body (33) in the internal face directed towards the rod conveying duct (12), being transversely offset from one another in the longitudinal direction of the conduit side wall (120), and upstream in the rod conveying direction, and the conduit side wall (120) is provided as a means of laterally guiding a material rod to be formed or formed along the rod conveying duct (12).
2. Conduit side wall (120) as claimed in claim 1, characterised in that the inlet orifice of the orifice (59) for the nozzle body (33) in the external face opposite the outlet opening of the orifice (59) for the nozzle body (33) in the internal face directed towards the rod conveying duct (12) is disposed closer to the bottom face of the conduit side wall.
3. Conduit side wall (120) as claimed in claim 1 or 2, characterised in that the conduit side wall (120) has a cut-out in which a retaining device (50) of complementary shape for a nozzle device (30) is inserted,
   and the retaining device (50) has a mounting orifice (59) for the nozzle device (30), and a nozzle body (33) of the nozzle device (30) is inserted or can be inserted in the mounting orifice (59) of the retaining device (50).
4. Conduit side wall (120) as claimed in claim 3, characterised in that the cut-out is disposed on the conduit side wall (120) in the bottom face remote from a rod conveyor (22), in particular a suction rod conveyor (22).
5. Conduit side wall (120) as claimed in claim 3 or 4, characterised in that at least one or more positioning devices (123, 124) are provided for the retaining device (50) of the nozzle device (30), preferably on the bottom face of the conduit side wall (120) remote from a rod conveyor (22), in particular a suction rod conveyor (22).
6. Conduit side wall (120) as claimed in claim 5, characterised in that at least two positioning bushes are provided as positioning devices (123, 124), preferably in the cut-out and/or the bottom face of the conduit side wall (120).
7. Conduit side wall (120) as claimed in one of claims 1 to 6, characterised in that the conduit side wall (120) comprises a nozzle body (33) having a conveyor duct (34), and the conveyor duct (34) is straight and opens into the rod conveying duct (12) at the internal face, and the conveyor duct (34) is disposed in such a way that the conveyor duct (34) extends obliquely at an acute angle with respect to the internal face directed towards a rod conveyor duct (12), and the conveyor duct (34) extends obliquely at an acute angle with respect to the conveying direction (F2) of the rod conveying device (10).
8. Conduit side wall (120) as claimed in one of claims 1 to 7, characterised in that the conduit side wall (120) comprises a nozzle body (33) having a conveyor duct (34) which on the pressure side is connected to a plurality of conveyor lines of a plurality of connectors (41, 42) so that a preferably liquid or gaseous medium can be conveyed via a conveyor line of a connector (41, 42) respectively to the conveyor duct (34) of the nozzle body (33).
9. Conduit side wall (120) as claimed in claim 8, characterised in that the preferably straight conveyor lines of the connectors (41, 42) to the conveyor duct (34) are disposed respectively in a bent arrangement at a predefined, preferably obtuse, angle.
10. Conduit side wall (120) as claimed in one of claims 3 to 9, characterised in that a heating device (25) is provided on the cut-out, so that when the retaining device (50) is fitted to the nozzle device (30) in the cut-out, the retaining device (50) and/or the nozzle device (30) is or are heated or can be heated.
11. Device (10) for conveying at least one material rod in the tobacco processing industry, wherein a rod conveying duct (12) is provided for the material rod to be formed or formed, and the rod conveying duct (12) comprises conduit side walls (120, 121) disposed at a predefined distance from one another, and one conduit side wall (120) of the rod conveying duct (12) is as claimed in one of claims 1 to 10.
12. Device as claimed in claim 11, characterised in that several adjacently disposed rod conveying ducts (11, 12) are provided, each for a material rod, and a conduit side wall (120) of a first rod conveying duct (12) is provided with a nozzle device (30), and the conduit side wall (120) of the first rod conveying duct (12) is as claimed in one of claims 1 to 10, and the nozzle device (30) is disposed between the conduit side wall (120) of the first rod conveying duct (12) and a conduit side wall (111) of a second rod conveying duct (11) adjacent to the conduit side wall (120) of the first rod conveying duct (12).
13. Machine (P) of the tobacco processing industry, in particular a rod making machine of the tobacco processing industry, preferably a cigarette rod making machine, having a conduit side wall (120) as claimed in one of claims 1 to 10 or having a device as claimed in one of claims 11 or 12.
14. Use of a conduit side wall (120) in a machine (P) of the tobacco processing industry, in particular a rod making machine of the tobacco processing industry, preferably a cigarette rod making machine, the conduit side wall (120) being as claimed in one of claims 1 to 10.

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