EP2026669A1

EP2026669A1 - Method of operating a rod-making machine and rod-making machine

Info

Publication number: EP2026669A1
Application number: EP07725901A
Authority: EP
Inventors: Jörg Tobias; Franz-Peter Koch; Hans-Hugo Severin; Matthias Krause
Original assignee: Hauni Maschinenbau GmbH
Current assignee: Koerber Technologies GmbH
Priority date: 2006-06-13
Filing date: 2007-06-07
Publication date: 2009-02-25
Anticipated expiration: 2027-06-07
Also published as: CN101466278B; EP2026669B1; WO2007144109A1; ATE467359T1; PL2026669T3; DE502007003752D1; JP5119245B2; DE102006027597A1; CN101466278A; JP2009539389A

Abstract

The invention relates to a method for operating a rod-making machine in the tobacco-processing industry. The invention also relates to a rod-making machine in the tobacco-processing industry. The method according to the invention is distinguished in that, in order to start up the rod-making machine, rod material (107, 117) is scattered onto a suction-type rod conveyor (17, 106) and it is ascertained as to whether the suction-type rod conveyor (17, 106) is occupied by a predeterminable quantity of rod material (107, 117), wherein, in the case where the suction-type rod conveyor (17, 106) is occupied by the predeterminable quantity of rod material (107, 117), an additive (101) is fed to the rod material (107, 117) in the region of the suction-type rod conveyor (17, 106) and, in the case where the suction-type rod conveyor (17, 106) is not occupied by a predeterminable quantity of rod material (107, 117), the feed of additive does not take place. The rod-making machine according to the invention comprises a first sensor (118, 118') which detects whether or not a suction-type rod conveyor (17, 106) is occupied by rod material (107, 117).

Description

Method for operating a stranding machine and stranding machine

description

The invention relates to a method for operating a stranding machine and a stranding machine of the tobacco-processing industry.

WO 2005/096851 A1 discloses a method and a device for producing a smokable article in which tobacco is peeled open and an extrudate is formed, wherein the extrudate is applied to the tobacco which has been quenched.

From DE 33 11 886 C2 a method for producing a cigarette is known in which an admixture of expanded tobacco pulp is added to a tobacco layer. In addition, it is disclosed that the expandable tobacco pulp may also be provided with a flavoring agent, for example menthol.

From EP 0 405 929 A2 is provided, a liquid strand with Add 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.

It is an object of the present invention to provide a rod maker of the tobacco-processing industry and a method for operating a rod machine of the tobacco processing industry, by means of which even when adding an additive, a uniform and homogeneous fiber strand, for example from tobacco fibers or from filter material fibers are produced can.

It should also be possible to achieve long service life of the stranding machine.

This object is achieved by a method for operating an extrusion machine of the tobacco-processing industry, wherein, in particular for starting the stranding machine, strand material is aufauert on a suction conveyor and is detected, whether the Saugstrangförderer is covered with a predetermined amount of strand material, in which case, that the Saugstrangförderer is covered with the predetermined amount of strand material, an additive is supplied to the strand material in the region of the Saugstrangförderers and in the case in which the Saugstrangförderer is not covered with the predetermined amount of strand material, no supply of an additive takes place. As a result, a very uniform strand can be produced and at the same time at startup or in

Take operation and set when shutting down or out of service of the strand machine that components of the strand machine, such as the Saugstrangförderer and, for example, a Saugstrangförderer arranged suction belt, are not contaminated with the additive, so that the

Significantly increase service lives of the stranding machine. The additive preferably comprises or is a fluid or an extrudate. The additive may, for example, be a pasty mass which is squeezed out or injected under pressure from an additive supply device, for example a nozzle. The additive may in this case be finely atomized, but may also be present as a continuous strip or in the form of strip pieces or smaller chunks or particles or splashes. In particular, in the context of this invention, in the event that no supply of additive takes place, in particular no additive is dispensed onto the strand material or parts of the strand machine. It is also possible, when starting the stranding machine, which is to be understood in particular in the context of the invention, a commissioning of the strand machine, only then provide the supply of additive when strand material is arranged on the suction belt conveyor.

In particular, if the operation or shutdown of the stranding machine is interrupted, the supply of additive is interrupted or the additive is released into a collecting container or no additional additive is made available.

Preferably, the additive is supplied to the strand material only shortly before the connection until at the latest to the connection of a gluing of a strip of material enveloping the strand material.

Preferably, the additive is supplied to the strand material at the latest at a time in which the strand material is detected in a strand guiding device.

Preferably, the additive is at a time between the connection of a gluing of a the strand material um- - A -

enveloping strips of material and the activation of a strand stripper supplied to the strand material. The Strandabschläger is usually used when the strand produced has the desired properties and should be transferred for further processing in the processing process.

Preferably, the additive is in the case of Hersteilens a wrapping material strip free strand supplied at the latest then the strand material in which a Strandabschläger is activated.

If it is detected in the conveying direction of the strand material upstream of the supply of the additive to the strand material, whether the suction belt conveyor is covered with strand material, is very well prevented that the suction belt conveyor comprising, for example

Saugband, is not polluted, since no or substantially no additive can reach the Saugstrangförderer. The detection upstream of the supply of the additive to the strand material is particularly well-suited to determine quickly enough whether strand material is placed on the suction belt conveyor.

Preferably, the predeterminable amount of strand material can be designed so that in the presence of strand material on the Saugstrangförderer the additive is added and in the case in which no strand material is arranged on the Saugstrangförderer, also no supply of additive takes place. The predeterminable amount can also be a layer of strand material which is substantially opaque, ie in which the suction strand conveyor is substantially completely covered with the material.

Preferably, in the region of the additive feed to the strand material, in particular immediately downstream of a reference material supply device, checks whether there is a stop-causing irregularity in the strand material arranged on the suction belt conveyor, wherein in the presence of such an irregularity, the additive supply is interrupted or additive is discharged into a collecting container. Such an irregularity is also referred to as choke. These are clumps or accumulations of the strand material, which can lead to stoppers.

In a strand machine stop, when an extruder stop signal is used to stop the additive feed or dump additive into a catch tray, strand machine stop prevents parts of the skein machine from becoming contaminated.

Instead of detecting a sufficient amount of strand material or a predeterminable amount of strand material, it is also possible when starting the stranding machine to wait for a predeterminable time, to which the additive is then fed to the strand material.

Preferably, the strand material comprises isolated fibers of tobacco or filter material.

The object is further achieved by a rod making machine of the tobacco processing industry with a first sensor which detects the occupancy of a Saugstrangförderers with strand material, wherein a device for supplying additive (Zusatzstoffzuführvorrichtung) is provided to the arranged on the Saugstrangförderer strand material. The stranding machine according to the invention makes it possible to add an additive to the strand material at the right time. The additive feed device tion is preferably arranged downstream of the first sensor in order to determine the time or the moment of supplying additive to the strand material more accurately.

If a second sensor is provided to detect irregularities in the strand material applied to the suction belt conveyor, which may lead to a stoppage of the strand machine, the supply of additive may be ended in time to reduce the amount of strand material that can no longer be used. gladly.

Preferably, a control device is provided, which is connected to the first sensor and / or the second sensor and controls the additive supply device. Preferably, the strand material comprises fibers of tobacco and / or filter material.

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:

1 is a schematic side view of a part of a strand machine according to the invention,

2 shows a schematic sectional view of the device according to the invention from FIG. 1 in a position tilted by 90 °, FIG.

Fig. 3 is a schematic sectional view of the device according to the invention of FIG. 1 in a top view tilted by 90 °, and Fig. 4 is a schematic three-dimensional representation of a

Rod machine.

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 shows a schematic side view of part of a strand machine according to the invention of the tobacco-processing industry, wherein from a suction channel 1 13, which is shown in Fig. 2, only one side wall or channel wall 103 is shown. On the channel wall 103, an additive supply device, namely in this case a nozzle device 102 is provided with a nozzle body 115 having a nozzle opening 1 10, from which a fluid 101 flows. The fluid 101 may be a binder, flavor, or other agent, for example, supplied to tobacco or filter material. It can also be an extrudate, which is pressed out of the nozzle opening 10 as a pasty mass and optionally atomized.

A fibrous material, such as tobacco or filter fibers, is sucked by suction air through a suction chute 113 to a suction belt 106. The suction belt 106 moves in Fig. 1 from right to left in Saugbandförderrichtung 109. It forms thereby from a quenched fibers 107 existing nonwoven fabric on the Aufschauerfläche 1 16. The fibers 1 17 may also be mixed with granules or powder.

Since in this exemplary embodiment the nozzle device 102 projects into the suction channel 13, the transport air flow 108 is interrupted. curved in sections in the suction channel 113. The fibers 1 17 are also indicated schematically. In Fig. 2, the embodiment of Fig. 1 is shown in a rotated by 90 ° schematic sectional view. 2, the second channel wall 105 is additionally shown, which has a recess 104 relative to the nozzle device 102. The recess 104 serves to provide no narrowing of the suction channel 1 13 in the region of the nozzle device 102. The recess is initially in the conveying direction of the fibers 17 1, the cross-section of the channel 1 13 expanding and then tapered back to the suction belt 106 back. This results in a convex bulge in the channel wall 105th

Fig. 3 shows the embodiment of Fig. 1 in a schematic plan view in a sectional view tilted 90 ° downwards. The transitions of the bulge may be formed without edges, contrary to the representation of FIG.

In order to introduce a fluid 101 into, for example, a tobacco rod, a nozzle or nozzle device 102 is incorporated in the one channel cheek or channel wall 103 and a pocket or recess 104 in the opposite channel cheek or channel wall 105. The device is to be designed such that the already thawed tobacco 107 on the suction belt 106 and the further shudder is not or substantially not influenced.

In this case, the nozzle device 102 is preferably mounted or arranged on the channel wall 103, which is less flowed by the tobacco stream or material flow. In suction shafts or when using suction channels 1 13 in combination with fluid bed conveyors, which are not shown, this is done in particular by centrifugal forces, through which the material flow more or less clinging to one side. The nozzle device 102 can be in the form of a partially flowed volume body, such as in the examples of FIGS. 1 to 3, or as a capillary or as a combination of a partially flowed or full flow volume body with a capillary, which is not shown. Through the capillary tube, a better backflow of an introduced fluid is made possible.

The nozzle devices used are preferably extrusion nozzle devices.

As is also shown schematically in FIG. 1, the extruded strand material 107 provided with additive is fed in the direction of the arrow 109 to a format device 126, after the nonwoven fabric 107 has been trimmed as usual. For this purpose, the nonwoven fabric is placed on a wrapping strip 121, for example made of paper, which runs on a format strip 127 in the format device 126. In the formatting device 126, the strand material is wrapped with the wrapping strip 121, the wrapping strip 121 is completely wrapped around the strand material and glued, optionally cured and, if the strand is proper, cut to length by the strand stripper 122, so that in the moment the tee provided upstream of the Abschlagägers strand can be fed to further processing.

In Fig. 2, a first sensor 118 is shown, which detects whether a sufficient amount of strand material 107 is aufauert on the suction belt 106. The sensor 118 may be integrated into the channel wall 105, as shown in FIGS. 2 and 3. It may also be a corresponding sensor 1 18 'may be provided, which also detects whether a sufficient amount of strand material is aufauert on the suction belt 106. However, the first sensor 1 18 'is in the nozzle body 1 15 of the nozzle device 102 integrated. The first sensor 118 'is arranged upstream of the nozzle opening 110. There are also sensors 1 19 and 119 'are provided to detect irregularities in the strand material, which can lead to a stop of the strand machine, for example due to a

Jams of the strand material during insertion into the format device. It may be sufficient to provide only a first sensor 118, 1 18 'and a second sensor 119, 1 19'.

The signals of the sensors 1 18, 1 18 ', 1 19, 1 19' are fed to a control device 120, which controls the nozzle device 102. This is indicated by dashed lines. The control device 120 also controls the operation of a collecting container 123 or a suction device, which ensures that negative pressure prevails in the collecting container 123, a suction tube 125 and the suction bore 124, which ensures in the region of the nozzle opening 110 that the fluid 101 passes through the suction hole 124, the suction tube 125 passes into the collecting container 123.

The invention is particularly suitable for preventing or largely avoiding that strand material provided with an additive, for example a tobacco rod, gets into the weft, for example a shredder. For this purpose, the startup times and stop times are to be adjusted to the connection and disconnection of the additive feed. The connection is preferably made when the strand is detected on a prism rail following the Strandabschläger 122, behind a measuring head, which measures the properties of the tobacco rod.

In order to avoid contamination of the suction belt 106, no additive may reach the unoccupied suction belt 106 at the start or at the stop. For this purpose, the Saugbandbelegung over a suitable sensor 118, 118 'interrogated. A sensor 119, 1 19 'directly behind the nozzle 102 or 1 10 should detect so-called chokes and terminate the additive addition immediately upon detection of such chokes.

4 shows a schematic three-dimensional representation of a stranding machine, which is in particular a tobacco rod machine, by means of which a cigarette rod or tobacco rod is produced.

From a lock 1, a pre-distributor is charged in portions with, for example, tobacco. A removal roller 3 of the pre-distributor 2 fills a storage container 4 with tobacco, from which a vertical conveyor 5 removes tobacco and sends a stowage 6 under control. From the storage shaft 6 takes a pin roller 7 a uniform stream of tobacco, which is knocked out by a rollover roller 8 of the pins of the pin roller 7 and thrown on a circulating at a constant speed spreading cloth 9.

A formed on the spreading cloth 9 tobacco fleece is thrown into a sighting device 1 1, which consists essentially of an air curtain, the larger or heavier tobacco particles pass, while all other tobacco particles from the air into a funnel formed by a pin roller 12 and a wall 13 funnel 14 are steered.

From the pin roller 12, the tobacco is thrown into a tobacco channel 16 against a strand conveyor 17 or suction belt conveyor 17, on which the tobacco is held by means sucked into a vacuum chamber air and a tobacco rod is aufauert. An equalizer 19 or trimmer 19 removes excess tobacco from the tobacco strand, which is then placed on a synchronously guided cigarette paper 21 strips. The cigarette paper strip 21 is withdrawn from a reel 22, passed through a printing unit 23 and placed on a driven format tape 24.

The format strip 24 transports the tobacco rod and the cigarette paper strip 21 through a format 26 by folding the cigarette paper strip 21 around the tobacco rod, so that an edge is still projecting, which is glued in a known manner by a sizing apparatus (not shown). Then the bond is closed and dried by a Tandemnahtplätte 27.

A cigarette strand 28 thus formed passes through a strand density measuring device 29, which is preceded by a strand guiding device or in which a strand guiding device is integrated. The

Extrusion meter 29 controls the equalizer 19 or trimmer 19. The cigarette rod 29 is cut by a knife apparatus into double-length cigarettes 32. The double-length cigarettes 32 are transferred from a transfer device 34, which has controlled arms 33, to a transfer drum 36 of a filter attachment machine 37, onto the cutting drum 38 of which they are divided by a circular knife into single cigarettes.

Conveyor belts 39, 41 promote excess tobacco in a arranged under the reservoir 4 container 42, from which the recycled tobacco is removed from the vertical conveyor 5 again.

Usually incurred fiber material is returned during the startup and shutdown process of a stranding machine to the fiber material to be processed. By the invention it is avoided that provided with additive fiber material is recycled, which is a important criterion for a consistent fiber strand quality.

LIST OF REFERENCE NUMBERS

1 lock

2 pre-distributors

3 removal roller

4 storage containers

5 steep conveyors

6 stowage night

7 pin roller

8 deflection roller

9 sprinkler

11 viewing device

12 pin roller

13 wall

14 funnels

16 tobacco channel

17 Saugstrangförderer

18 vacuum chamber

19 trimmers

21 cigarette paper strips

22 Bobine

23 printing unit

24 format tape

26 format

27 tandem squares

28 cigarette rod

29 strand density meter

31 Knife apparatus

32 double-long cigarettes

33 arms

34 transfer device

36 transfer drum 37 filter attachment machine

38 cutting drum

39, 41 conveyor belt

42 containers

101 fluid

102 nozzle device

103 canal wall

104 recess

105 canal wall

106 suction belt

107 fibers quenched

108 transport air flow

109 Saugbandförderrichtung

1 10 nozzle opening

1 13 suction shaft

115 nozzle body

116 Aufschauerfläche

1 17 fibers

118, 118 'sensor

119, 119 'sensor

120 control device

121 serving strips

122 string cutters

123 collection container

124 suction hole

125 suction tube

126 format device

127 format tape

Claims

Method for operating a stranding machine and stranding machine patent claims

1. A method for operating a strand machine of the tobacco-processing industry, wherein, in particular for starting the stranding machine, strand material (107, 1 17) on a suction strand conveyor (17, 106) is woken up and is detected, whether the Saugstrangförderer (17, 106 ) is covered with a predetermined amount of strand material (107, 117), wherein in the case that the suction strand conveyor (17, 106) with the predetermined amount of strand material (107, 117) is occupied, an additive (101) to the strand material (107, 17) in the area of

Saugstrangförderers (17, 106) is supplied and in the case in which the Saugstrangförderer (17, 106) is not covered with the predetermined amount of strand material (107, 1 17), no supply of the additive takes place.

2. The method according to claim 1, characterized in that the additive (101) until shortly before the connection until late testens for connecting a gluing of a strand material (107) enveloping strips of material (121) is fed to the strand material (107).

3. The method according to claim 1, characterized in that the additive 101 is supplied at the latest at a time to the strand material (107), to which the strand material (107) in a strand guiding device (29) is detected. 0

4. The method according to claim 3, characterized in that the additive (101) at a time between the connection of a gluing of a strand material (107) enveloping strips of material (121) and activating a 5 Strangabschlägers (122) the strand material (107). is supplied.

5. The method according to claim 1, characterized in that the additive (101) in the case of producing a umhül- o lungsmaterialstreifenfreien strand at the latest in the moment the strand material (107) is supplied, in which a Strandabschläger (122) is activated.

6. The method according to any one of claims 1 to 5, characterized 5 indicates that in the conveying direction (109) of the strand material (107) upstream of the supply of the additive (101) to the strand material (107) is detected, whether the Saugstrangförderer (17, 106) with strand material (107) is occupied.

0 7. The method according to any one of claims 1 to 6, characterized in that in the region of the additive supply to the strand material (107), in particular directly Ström- down from an additive supply device (102, 110, 15), it is checked whether there is a stop-causing abnormality in the strand material (107) disposed on the suction belt conveyor (17, 106), in the presence of such an irregularity Adding feed is interrupted or additive (101) is discharged into a collecting container (123).

8. The method according to any one of claims 1 to 7, characterized in o characterizes that at a strand machine stop a the

Strangmaschinenstopp causing signal serves, the

To interrupt supply of additive or to deliver additive (101) into a collecting container (123).

9. The method according to any one of claims 1 to 8, characterized in that the strand material (107, 117) comprises isolated fibers of tobacco or filter material, and / or that the additive comprises or is an extrudate.

O

10. strand machine of the tobacco-processing industry with a first sensor (1 18, 118 '), the occupancy of a Saugstrangförderers (17, 106) with strand material (107, 117) Detek- ted, wherein a device (102, 1 10, 1 15) for supplying additive (101) (additive supply device) to the strand material (107) arranged on the suction belt conveyor (17, 106).

1 1. A stranding machine according to claim 10, characterized in that the Zusatzstoffzuführvorrichtung (102, 1 10, 115) downstream 0 of the first sensor (1 18, 1 18 ') is arranged.

12. Rope machine according to claims 10 or 11, characterized indicates that a second sensor (119, 119 ') is provided in order to detect irregularities in the strand material (107) applied to the suction belt conveyor (17, 106), which leads to a stop of the strand machine.

13. strand machine according to one of claims 10 to 12, characterized in that a control device (120) is provided which is connected to the first sensor (118, 1 18 ') and / or the second sensor (119, 1 19') and which controls the additive feed device (102, 110, 15).

14. Rope machine according to one of claims 10 to 13, characterized in that the strand material (107, 17) comprises fibers of tobacco and / or filter material and / or that the additive comprises or is an extrudate.