EP2596709A1 - Device for applying glue to a strip of material in the tobacco processing industry - Google Patents

Abstract

The device has a supply line (43) connected with a glue application unit (30) for providing glue to a glue application organ i.e. raster roll, or applying to a material strip. A discharge line (45) conducts the glue from the glue application unit. A flushing pipe (51) is connected with the supply line and the discharge line to introduce a flushing medium i.e. water, into the glue application unit. Another flushing pipe (61) is connected with the supply and discharge lines for deriving the flushing medium from the glue application unit. The glue application unit is designed as a gluing apparatus. An independent claim is also included for a method for operating a device to apply glue to a material strip of a tobacco processing industry.

Description

The invention relates to a device for applying glue to a material strip of the tobacco-processing industry, in particular tipping paper strip, with a glue application unit, wherein the glue application unit has a glue application element, in particular an anilox roller, wherein glue can be conveyed to the glue application unit by means of a feed line connected to the glue application unit, so that glue is provided to the glue application member for application to the strip of material, and / or wherein glue can be removed from the glue application unit by means of a removal line connected to the glue application unit.

Furthermore, the invention relates to a method for operating a device for applying glue to a material strip of the tobacco-processing industry, in particular tipping paper strips.

For the connection of cigarette filters with tobacco sticks usually tipping papers are provided, on the one hand wrap the filter on the one hand and on the other hand connect a head end of the tobacco rod with the filter with a protruding edge. The assembly of the filter with the tobacco rod is usually done by gluing, wherein on a tipping paper strip from which the tipping paper leaflets are cut, glue is applied.

From the European patent application EP-A-1 147 716 A device for applying glue to a wrapping material or a wrapping strip of a rod-shaped article of the tobacco-processing industry is described. In order to create a glue pattern with glue-free areas on the wrapping strip, the device has means for interrupting the glue supply to the wrapping strip.

Another glue application device is off EP-A-0 616 854 known, wherein by means of the glue application device liquid glue, in particular in the form of a glue pattern, on a web of paper, plastic, cardboard or the like, is applied. Here, a glue from a storage chamber in an engraving receiving and the glue in an application zone in cooperation with a counter roll from the engraving on the web applying transfer roller is provided. The described glue application device is preferably part of a filter attachment machine for cigarettes. In this case, liquid glue, preferably aqueous Polyvinylacetatleim, continuously applied to a tipping paper strip, which is then cut into tipping paper leaflets for connecting tobacco rods and filter plug.

It is also in EP-A-2 218 516 another device for applying glue on a strip of material of the tobacco processing Industry, wherein a glue supply is connected via a supply line with a Leimauftragungsorgan. Furthermore, a discharge line between the Leimauftragungsorgan and the external glue reserve is provided to return excess glue in the external glue stock.

Based on this prior art, the object of the invention is to improve the handling and operation of a Leimauftragungseinrichtung a machine of the tobacco processing industry.

This object is achieved by a device for applying glue to a strip of material of the tobacco-processing industry, in particular tipping paper strips, with a glue application unit, wherein the glue application unit has a glue application member, in particular an anilox roller, wherein glue can be conveyed to the glue application unit by means of a feed line connected to the glue application unit is, so that the glue application member glue is provided for application to the strip of material, and / or wherein by means of a Leimauftragungseinheit associated removal line glue from the Leimauftragungseinheit can be removed, which is further developed by a) at the supply line at least one flushing line to Introducing a flushing medium for the glue application unit is connected in the glue application unit and / or b) at the supply line at least one flushing line for deriving a, preferably in the Leimauftragun and / or c) at least one flushing line for introducing a flushing medium for the glue application unit is connected to the removal line in the glue application unit and / or d) at least one flushing line for the drainage line Deriving a, preferably introduced into the glue application unit, flushing medium for the glue application unit is connected from the glue application unit.

The invention is based on the idea that a rinsing line for feeding a rinsing medium into the glue application unit is connected to a (glue) supply line, by which an external glue supply is connected to the glue application unit, so that a rinsing medium for cleaning the glue application unit via the rinse line and for cleaning the Leimauftragungsorgans Leimauftragungseinheit is introduced. In this case, for introducing the flushing medium and the portion of the feed line between the connection point and the glue application unit as (further) purge line in the case of the cleaning process, i. for introducing the flushing medium into the glue application unit, used temporarily.

In a further embodiment, alternatively or additionally, a flushing line for introducing a flushing medium into the glue application unit may be connected to a (glue) discharge line which connects the glue application unit to the external glue supply. Furthermore, it is possible in further embodiments that a purge line for discharging a flushing medium from the glue application unit is provided on the discharge line, so that using the portion of the discharge line between the glue application unit and the junction of the discharge line with the purge line for discharging the purge medium and the connected Purge line for discharging the flushing medium after cleaning the Leimauftragungsorgans or Leimauftragungseinheit the used flushing medium is conveyed away.

It is also provided in the context of the invention that at a Supply line and a purge line for discharging a purge medium from the Leimauftragungseinheit is connected, wherein corresponding portions of the supply line for cleaning the Leimauftragungseinheit be used.

During normal operation of the glue application unit, glue is conveyed to the glue application unit from a glue supply via the supply line, also referred to as a glue supply line, so that the glue application device of the glue application unit is supplied with glue, whereby during operation of the device a conveyed material strip, such as e.g. a tipping paper strip on a filter tipping machine, the material strip is provided with a predetermined glue pattern. In particular, an anilox roller is provided in the context of the invention as Leimauftragungsorgan, in particular, the anilox roller is provided as the only glue application member for applying a glue pattern on the strip of material. In this respect, the material strip is provided with glue only by means of a single glue application member.

In order to clean the glue application unit, preferably a liquid flushing medium, in particular water or another cleaning liquid, is introduced into the glue application unit via the flushing line. Moreover, it is also possible within the scope of the invention for a vaporous medium or a gaseous medium, such as e.g. dry air, is introduced into the Leimauftragungsorgan, wherein, for example, using dry and hot air components of the Leimauftragungseinheit are dried quickly after a cleaning process with a liquid.

Characterized in that after cleaning the glue application unit, a flushing medium is introduced and after cleaning the corresponding In the case of the glue application unit, if the rinsing medium is removed from the glue application unit, it is possible that the devices to be cleaned no longer have to be removed manually from the glue application unit. Rather, an automatic cleaning process is performed, whereby the devices to be cleaned, such as the anilox roller, remain in the glue application unit, whereby the risk of damage during the cleaning process for the devices to be cleaned is reduced. In addition, the risk of injury is reduced by persons in the removal of facilities to be cleaned, since now remain through the automatic cleaning of the glue application unit, the devices to be cleaned in the glue application unit.

In addition, it is provided in a development of the device that the flushing line or the flushing lines for introducing a flushing medium outside the glue application unit to the (glue) supply line and / or to the (glue) discharge line are connected.

Furthermore, it is provided in one embodiment of the invention that the flushing line or the flushing lines are connected for deriving a flushing medium from the glue application unit outside the glue application unit to the supply line and / or to the discharge line.

In addition, a development of the device is characterized in that at least one purge line for introducing a flushing medium using a, in particular switchable, valve, in particular control valve, is connected to the supply line and / or to the discharge line and / or at least one purge line for deriving a Flushing medium using a, in particular switchable, valve, in particular control valve, is connected to the supply line and / or to the discharge line. In this way it is provided that corresponding valves are provided in the connection of a purge line to the supply line and / or with the discharge line for the glue at the respective connection points, so that during operation of the glue application unit for gluing a strip of material, the valve for the purge line for introducing a Flushing medium or the flushing line for discharging a flushing medium is in each case in a blocking position, while the valve are switched in passage position for the supply and the valve in the discharge line in passage position, which glue is conveyed from the glue supply to the glue application unit and glue from the glue application unit via the discharge line back into the glue supply.

In order to subsequently clean the glue application unit, the valve for the supply line in the blocking position and the valve for the discharge line is brought into blocking position, so that the purge line for introducing a flushing medium and the purge line for discharging a flushing medium, the cleaning and / or drying the cleaned units of the glue application unit is performed, wherein for passing a flushing medium, a portion of the supply line between the connection point of the flushing line to the supply line and a portion of the discharge line between the glue application unit and the connection point of a flushing line are used for deriving the flushing medium for the cleaning process.

Moreover, it is also conceivable within the scope of the invention that the flushing medium via the flushing line and a portion of the discharge line flushing medium via a flushing line connected to the discharge line for introducing a flushing medium is introduced into the Leimauftragungsorgan and then the flushing medium over a portion of the feed line and connected to the feed line flushing line for discharging a flushing medium, the flushing medium is conveyed from the Leimauftragungseinheit.

In addition, further modifications are possible in the connection of flushing lines to the feed lines for the glue and on the discharge line for removing the glue from the glue application unit.

In addition, a development of the facilities is characterized in that in the supply line, a switching valve is provided so that depending on the position of the switching valve glue or the rinsing medium arranged on the Leimauftragungsorgan, preferably closed, glue chamber can be fed and / or glue or the rinsing medium a formed in a housing of the glue application unit open container for a medium can be fed.

Characterized in that with respect to the conveying direction of the flushing medium after the connection point of the flushing line with the supply line or the discharge line, a valve is provided, it is possible to selectively direct the flushing medium to the devices to be cleaned, preferably to glue deposits on these devices of the glue application unit clean. For example, by means of a so-called (closed) doctoring chamber, which is arranged on an anilox roller as Leimauftragungsorgan, the flushing medium are passed into the doctoring chamber to clean both the doctor chamber in the interior and the anilox roller on its surface. In addition, in another position of the valve, the flushing medium, for example, to an open container in which For example, if glue that has not been applied is collected, it can be directed there to also apply and clean this container with a flushing medium.

Furthermore, it is also possible within the scope of the invention that glue is removed from the container from this open container during normal operation of the glue application unit and is brought to the surface of the anilox roller. In this respect, in carrying out a cleaning of the glue application unit, the flushing medium can be introduced into the open container accordingly.

In addition, it is accordingly provided in the device that in the discharge line and / or in the supply line, preferably second, switching valve is provided so that depending on the position of the switching valve glue or the flushing medium from a arranged on the Leimauftragungsorgan, preferably closed, glue chamber removable and / or glue or the flushing medium from a formed in a housing of the glue application unit open container for a medium can be removed. As a result, the flushing medium, in particular water, is conveyed away from the glue application unit via a flushing line for draining off the flushing medium, so that the devices of the glue application unit which have been cleaned with the flushing medium can subsequently be dried. In this case, the flushing medium is removed by the different positions of the switching valve selectively or in a predetermined order from the different devices of the glue application unit via the flushing line from the housing of the glue application unit. Also, for example, gaseous Trocknungsspülmedien in this case can be carried away from the Glimauftragungseinheit of the cleaned facilities (eg anilox roller or glue chamber or squeegee). Thus, after Spülmediumbeaufschlagung In the context of the cleaning process, the devices of the glue application unit that are acted upon by a flushing medium are conveyed away from the glue application unit by the glue application unit. In normal operation, for example, the glue chamber, is removed from the glue by means of arranged on the glue chamber anilox roller, conveyed to glue or excess glue via a discharge line from the glue application unit to the external glue stock returned or promoted.

In particular, it is provided in a further development of the device that a pressure pump is provided on the flushing line for introducing a flushing medium, so that a flushing medium pressurized by the flushing line is conveyed to the glue application unit.

Furthermore, it is advantageous in one embodiment of the device that a suction pump is provided on the purge line for draining at least one flushing medium from the glue application unit, so that the flushing medium provided with dirt particles is quickly discharged from the glue application unit.

Furthermore, a preferred embodiment of the device is characterized in that in the supply line to Leimauftragungseinheit between a first feed pump and a housing of Leimauftragungseinheit two, in particular controllable, valves, preferably in front of the entrance to the housing, are provided and in the discharge line between a housing the glue application unit and a second delivery pump two, in particular controllable, valves are provided. Characterized in that at least two switchable valves are provided in the discharge line, a safe operation is designed as a glueing apparatus Leimauftragungseinheit achieved during the production of products of the machine on a tobacco processing industry, as reliably when switching the valves in the forward direction glue from a Leimvorrat is conveyed via the supply line by means of a pressure pump in the Leimauftragungseinheit and at the same time from the discharge line via the valves connected in the passage position is sucked from the output side of the second arranged suction pump glue from the housing of the glue application unit.

In a preferred embodiment of the device is provided, between two valves of the supply line and between two valves of the discharge line, a connecting line between the supply line and the discharge line is provided. As a result, a kind of bypass line is formed between the supply line and the discharge line.

Preferably, in the connecting line between the two valves of the supply line and between the two valves of the discharge line in the connecting line a, in particular controllable, valve is arranged. By a corresponding control or circuit of the valves in the supply line and in the discharge line and in the interposed connecting line on the existing pressure pump and the suction pump also present, a part of the discharge line is filled before starting the gluing device with glue, in which case the first on the housing output side valve of the discharge line is switched to the discharge position, while the second valve of the discharge line is in the blocking position, so that glue from the pressure pump on the first output side valve of the supply and via the valve located in the passage of the connecting line is conveyed to the discharge line, said the first output-side valve in the discharge line is also in passage position, while the input-side valve is in the blocking position on the housing to the suction pump. To start up the glue application unit, the valves in the supply line and in the discharge line are switched to the passage position, while the valve in the connecting line between the supply line and the discharge line is brought into blocking position. To form a glue circulation while the pressure pump in the supply and the suction pump in Abführkreis is connected to a common glue stock, so that is conveyed by the pressure pump glue from the glue stock, while the suction pump via the discharge line the removed from the housing of the glue application unit glue returns the glue supply ,

For removing the glue application unit with the housing e.g. The first output-side valve on the pressure pump is switched into the blocking position by a machine, while the second valve is in the forward position. Further, in Abführleitungskreis the output side on the housing first valve in the blocking position, while in the discharge line, the second valve disposed on the input side of the suction valve valve is in passage position, wherein the arranged in the connecting line between the supply line and the discharge valve is also in the passage position, so that glue is removed from the supply line and the glue application unit by applying a negative pressure via the suction pump before removal of the glue application unit designed as a glueing apparatus.

When removing or disassembling the glue application unit of the production machine of the tobacco processing industry, for example, Filteransetzmaschine, are the valves of the supply and the valve in the connecting line in the locked position, while with activated suction pump and mounted glue application unit the valves on the discharge line are in passage position, so that glue is pumped out of the housing of the glue application unit. This is preferably done for a predetermined time to remove a predetermined amount of glue from the housing of the glue application unit. For removal, all valves are in the blocking position, in which case both pumps, ie both the pressure pump and the suction pump, are switched off.

Moreover, a closed glue circuit is formed on a machine in that the pressure pump or the first feed pump are connected on the input side with a glue reservoir and / or the suction pump or second feed pump on the output side with a glue reservoir, wherein in particular preferably the pressure pump and the suction pump with the same glue supply are connected.

In addition, it is advantageously provided in the device that an external glue supply is connected to the glue application unit via the supply line and / or a glue supply for the glue application unit is connected to the glue application unit via the discharge line, wherein a first feed pump is connected to the glue reservoir and / or the second Feed pump output side are connected to a glue supply.

Furthermore, the object is achieved by a method for operating a device for applying glue to a material strip of the tobacco-processing industry, in particular tipping paper strips, the device being designed as described above, wherein a flushing line for introducing a flushing medium, a flushing medium, in particular a cleaning liquid or a gaseous medium introduced into the glue application unit so that the glue application member of the glue application unit and / or parts of the glue application unit are cleaned and / or that flushing medium introduced into the glue application unit is removed via the flushing line for draining a flushing medium from the glue application unit. To avoid repetition, reference is expressly made to the above statements.

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 einen mit Spülleitungen versehenen Kreislauf für die Versorgung einer Leimauftragungseinheit;

Fig. 2

schematisch eine Darstellung einer Leimauftragungseinheit im Längsschnitt;

Fig. 3 und 4

jeweils schematisch einen erfindungsgemäßen mit Spülleitungen versehenen Leimkreislauf zur Versorgung eines Leimauftragungsorgans der Tabak verarbeitenden Industrie mit Leim.

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 circuit provided with flushing lines for the supply of a Leimauftragungseinheit;

Fig. 2

a schematic representation of a glue application unit in longitudinal section;

3 and 4

in each case schematically a glue circuit according to the invention provided with flushing lines for supplying a glue application device of the tobacco-processing industry with glue.

In the following figures are the same or similar elements or corresponding parts provided with the same reference numerals, so that is apart from a corresponding reimagination.

Fig. 1 schematically shows a circuit for the supply of a Leimauftragungsorgans the tobacco-processing industry, which is arranged in a housing 4 of a schematically illustrated Leimauftragungseinheit 30.

In order to supply glue to the glue application member arranged in the housing 4 from a glue reservoir 40, a feed pump or pressure pump 42 is connected to the glue reservoir 40 via a line 41. On the output side, the pressure pump 42 is connected via a feed line 43 to the input side of the housing 4.

To remove glue from the housing 4 or the glue container, the housing 4 has on its output side via a connection to a discharge line 45, which is connected to a suction pump 46. By means of the suction pump 46, excess glue is removed from the housing 4 of the glue application unit 30 or the glue container and returned to the external glue reservoir 40 via a connecting line 47.

The in Fig.1 illustrated circuit for supplying the arranged in the housing 4 Leimauftragungsorgans is part of a in Fig. 1 schematically designated Filteransetzmaschine M. Under the name MAX, for example, a filter attachment machine of HAUNI Maschinenbau AG, Hamburg, known.

In the feed line 43, a switchable, in particular controllable, valve 55 is disposed outside of the glue application unit 30, which is in Fig. 1 in Durchlassstellung for the promotion of the glue is connected from the glue supply 40 in the glue application unit 30.

A purge line 51 for introducing a cleaning fluid provided as flushing medium for the glue application unit 30 is also connected to the valve 55, so that the valve 55 is switched to clean devices of the glue application unit 30 and the cleaning fluid is passed through the purge line 51 and a section of the feed line 43 the valve 55 and the housing 4 of the glue application unit 30 is introduced. For this purpose, the flushing medium is pressurized in the flushing line 51 for introducing the flushing medium using a provided in the flushing line 51 pressure pump 53 with pressure. The rinse medium is stored in a rinse medium supply 54, e.g. Container, so that for cleaning the glue application unit 30, the flushing medium, e.g. Water is conveyed from the Spülmediumvorrat 54 by means of the pressure pump 53 through the purge line 51 into the glue application unit 30. As a result, after a production run of the glue application unit 30, the devices of the glue application unit 30 brought into contact with glue are cleaned by the introduced flushing medium.

In order to remove the flushing medium from the glue application unit 30, a preferably controllable valve 65 is arranged on the output side of the housing 4 from the glue application unit 30, so that with appropriate switching of the valve 65, the flushing medium provided with glue residues from the glue application unit 30 in FIG a purge line 61 for discharging the purge medium is conveyed. In this case, a suction pump 63 is provided in the purge line 61, whereby the contaminated flushing medium is sucked. The rinsing medium is subsequently collected in a rinsing medium collecting container 64.

In an alternative, not shown here, the purge line 51 are arranged for introducing a flushing medium to the discharge line 45 and arranged the purge line 61 for discharging a flushing medium to the feed line 43 or connected, so that the flow direction of the flushing medium during the cleaning process against the conveying direction of the glue in Production operation of the glue application unit 30 is.

After cleaning the devices of the glue application unit 30, the purge lines 51, 61 can be used for carrying out a drying process, for example by conveying dry hot air through the purge lines 51, 61 connected to the feed line 43 and to the discharge line 45 and through the glue application unit 30 ,

Based on Fig. 2 the operation of a glue application unit 30 or a gluing apparatus of the tobacco-processing industry will be explained by way of example. Fig. 2 shows in longitudinal section a glue application unit 30. The glue application unit 30 has a (single) disposed in a housing 4 and rotatably driven anilox roller 5, which is driven in rotation in the direction of the arrow 6 shown. The cups of the anilox roller 5 enter a glue distribution chamber 7 of a glue chamber 3 and take up the glue introduced in the glue distribution chamber 7 and exit in the region of an upper-side scraper or squeegee 8. Subsequently, the cells filled with glue are conveyed to a glue application zone 9 with rotation of the roller 5, through which a paper web 10 to be continuously glued is conveyed.

At the bottom of the paper web 10 is by the inclusion of Glue from the wells of the anilox roller 5 applied a corresponding glue pattern. For safe guidance of the paper web 10 in the region of the glue application zone 9, guide rods 11 or guide rollers are provided on the upper side. In a further embodiment, it is conceivable that the anilox roller 5 cooperates in the region of the glue application zone 9 with a counter roller in order to apply a corresponding glue pattern to the underside of the paper web 10. After removal of glue from the wells of the anilox roller 5, the wells are again rotated to the glue distribution chamber 7.

The glue distribution chamber 7 is spread over the external feed line 43 (see FIG. Fig. 1 ) and an internal supply line 13 of the glue distribution chamber 7 supplied. For this purpose, the feed line 43 on the input side with the feed pump 42 (see. Fig. 1 ), so that glue is fed into the supply line 13 from an external glue reservoir via the external feed line 43.

The glue not consumed in the glue chamber 3 is removed from the glue chamber 3 via the discharge line 45. In an alternative not shown here, the glue not consumed in the glue chamber 3 is collected in the glue container or in the housing 4 on the underside of the housing. Here, the glue collected in a glue sump in the housing 4 by means of a (not shown here) suction pipe, which with the discharge line 45 (see. Fig. 1 ), emptied. In this case, a negative pressure generated by the suction pump 46 via the discharge line 45 (see. Fig. 1 ) and the suction pipe immersed in the collected and unused glue is applied, so that the glue collected at the bottom of the housing is removed from the housing interior of the glue application unit 30 from the housing bottom.

During a production stop in which no gluing of a paper web 10 takes place, a container 21 filled with a liquid, in particular water, is delivered to the anilox roller 5 so that the wells of the anilox roller 5 pass through the water bath present in the container 21 and subsequently to the glue distribution chamber 7 be encouraged. This measure prevents the glue from drying during production stop or interruption.

As in Fig. 2 shown schematically, the feed line 43 is connected to a purge line 51 for introducing a flushing medium. This can also be done using a valve in one embodiment. In order to promote the flushing medium to various devices in a cleaning of the facilities of the glue application unit 30, a valve 71 is arranged in the delivery line, so that depending on the position of the valve 71, the fresh flushing medium to the container 21 via a connected to the valve 71 line 72 promoted or the flushing medium is conveyed via the internal supply line 13 into the glue distribution chamber 7, so that the glue distribution chamber 7 and the anilox roller 5 and their wells are cleaned by the introduced flushing medium.

The enriched with dirt particles flushing medium is then removed from the glue distribution chamber 7 via the connected to the discharge line 45 purge line 61 for discharging the purge medium.

To optionally remove the introduced into the container 21 flushing medium from the container 21, a line 76 is connected to the discharge line 45 via a, preferably controllable, valve 75, so that via line 76 at corresponding Circuit of the valve 75 after the cleaning of the container 21, the flushing medium is conveyed away to the flushing line 61.

In the FIGS. 3 to 4 various schematic representations of a glue circuit for the supply of a arranged in the housing 4 Leimauftragungsorgans Leimauftragungseinheit 30 are shown, are provided by the Leimauftragungsorgans strips of tobacco processing industry, especially paper webs, with glue or with a glue pattern, wherein the flushing line 51 for introducing a Rinsing medium in the glue application unit 30 and the purge line 61 are connected to derive a flushing medium from the glue application unit at different connection points to the glue delivery lines.

The supply line 43 of glue in the housing 4 and the Leimauftragungsorgan in the housing 4 has two controllable valves 111, 112. The Leimvorrat 40 returning discharge line 45 also has two valves arranged in series 113, 114. Between the feed 43 and the discharge line 45 is formed between the valves 111 and 112 and between the valves 113 and 114 of the discharge line 115, a further connecting line 120, wherein in the connecting line 120, a valve 121, in particular control valve, is arranged. Depending on the circuit of the valves 111, 112, 113, 114, 121 and the operation of the feed pump 42 and the suction pump 46 different operating modes are possible.

Hereinafter, various operation modes based on the embodiment according to Fig. 3 briefly described: To fill, for example, the housing 4 at the bottom of the housing with glue, the valves 112 and 113 are in the blocking position, wherein the valves 111, 121 and 114 are connected in the forward position, so that at switched feed pump 42 glue from the glue reservoir 40 is conveyed into the housing 4 until a corresponding glue level is reached in the housing. For example, detects a level sensor a predetermined glue level in the housing 4, so that subsequently the feed pump 42 is turned off.

In the production situation, the valves 111, 112 are connected in the supply line 43 in the passage position. The valves 113, 114 in the discharge line 45 are connected in the passage position. The valve 121 is in the blocking position, so that no glue is conveyed from the feed pump 42 to the discharge line 45. When the feed pump 42 is activated, glue is conveyed from the glue supply 40 into the housing 4 or to the glue application member, so that glue images are applied to a material web, in particular a paper web, by means of the glue application member in order to glue toffing paper leaflets, for example on a filter attachment machine. The unused glue is pumped out of the housing 4 via the discharge line 45 with the valves 113, 114 switched on and the suction pump 46 switched on, back into the glue reservoir 40.

If the glue application unit 30 is to be removed from the machine after a production run, glue is first removed from the glue application device in the supply line 43 and on the printing side glue. For this purpose, the pressure pump 42 is turned off while the suction pump 46 is turned on. The valves 111 and 114 are in the locked position, so that when switched, i. in the passage position switched valves 112, 121 and 113 glue from the pressure side of the glue application unit 30 from the housing 4 in the glue reservoir 40 is conveyed back.

Upon removal of the glue application unit 30 with the housing 4, ie, during disassembly of the housing 4 of the machine M, the pressure pump 42 is turned off and the valves 111, 112 and 121 connected in the blocking position. With the valves 113, 114 switched on and the suction pump 46 switched on, glue is returned from the suction side of the housing 4 to the glue reservoir, in particular the suction pump 46 being turned on for a predetermined period of time to remove a corresponding predetermined amount of glue from the housing 4.

Subsequently, the suction pump 46 is turned off and the valves 113, 114 are switched to the blocking position, so that the glue application unit 30 can be separated with its housing 4 from the lines 43 and 45 and a virtually glue-free Glimauftragungseinheit 30, i. that little glue is in the housing 4, can be removed from the machine.

In the case where the glue application unit 30 remains on the machine for cleaning, according to the embodiment in FIG Fig. 3 the valves 111, 113 and 121 brought into blocking position. Between the valves 111 and 112, a purge line 51 for introducing a flushing medium with a controllable valve 52 is connected to the feed line 43.

The valve 52 in the purge line 51 is brought from the blocking position into the passage position for cleaning the glue application unit 30, so that the purge medium is introduced from the pressure pump 53 via the purge line 51 through the valve 112 connected in passage position in the feed line 43 into the glue application unit 30 becomes. After cleaning, for example, a glue distribution chamber or an open container of the glue application unit 30 is connected via the discharge line 45 and through the arranged in the discharge line 45 and in the passage position Valve 114 carries away the contaminated with glue residues flushing medium. After passage of the flushing medium through the valve 114, the flushing medium is conveyed away via a flushing line 61 connected to the removal line 45 between the valves 114 and 113 for discharging the flushing medium, wherein the flushing medium is passed through a valve 62 connected in the passage position. In order to discharge the flushing medium, a suction pump 63 is provided on the flushing line 61.

After cleaning of the glue application unit 30, the valves 52, 62 of the flushing lines 51 and 62 are brought into blocking positions, so that subsequently the cleaned glue application unit 30 is again provided with glue in the manner described above.

According to the embodiment in Fig. 4 For the purpose of cleaning the glue application unit 30, the flushing line 51 is connected between the valve 112 and the inlet of the feed line 43 into the housing 4 of the glue application unit 30. The purge line 61 for discharging a purge medium is connected to the supply line 43 between the valves 111 and 112.

For cleaning the glue application unit 30, the valves 111, 112 and 113 are brought into the blocking position, while the valves 114 and 121 are in the passage position. From the pressure pump 53, the flushing medium is introduced through the purge line 51 into the feed line 43 between the valve 112 and the glue application unit 30, while the flushing medium is conveyed to the devices of the glue application unit 30 to be cleaned. The rinsing medium contaminated with adhesive residue is conveyed via the discharge line 45 through the valve 114 which is opened in the passage position and through the valve 121 to the rinse line 61 for the purpose of diverting the rinsing medium promoted.

In the context of the invention, further variations of the connection possibilities of the purge lines 51, 61 to the (glue) feed line 43 and (glue) discharge line 45 are conceivable.

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

3

Leimkammer

4

casing

5

anilox roller

6

arrow

7

Leimverteilungskammer

8th

doctor

9

glue-applying

10

paper web

11

guide rod

13

supply line

21

container

30

glue-applying unit

40

Leimvorrat

41

management

42

pressure pump

43

Zuförderleitung

45

delivery line

46

suction pump

47

delivery line

51

flushing line

53

pressure pump

54

Spülmediumvorrat

55

Valve

61

flushing line

63

suction pump

64

Spülmediumsammelbehältnis

65

Valve

71

Valve

72

management

75

Valve

76

management

111

Valve

112

Valve

113

Valve

114

Valve

120

connecting line

121

Valve

M

filter attachment

Claims (13)

Device for applying glue to a material strip (10) of the tobacco-processing industry, in particular tipping paper strip (10), with a glue application unit (30), wherein the glue application unit (30) has a glue application element (5), in particular an anilox roller (5), wherein glue can be conveyed to the glue application unit (30) by means of a feed line (43) connected to the glue application unit (30), so that the glue application member (5) is or will be provided with glue for application to the material strip (10), and / or wherein with the glue-applying unit (30) discharge pipe connected (45) of glue from the glue-applying unit (30) is conveyed away, characterized in that on the feed line (43) at least one flushing line (51) for introducing a flushing medium for the glue-applying unit (30) in the glue-applying unit (30) connected and / or at the feed line (43) at least one rinse line (61) for discharging a, preferably in the Leimauftragungseinheit (30) introduced, rinsing medium for the Leimauftragungseinheit (30) from the Leimauftragungseinheit (30) is connected and / or on the discharge line (45) at least one rinse line (51) for introducing a rinsing medium for the glue application unit (30) in the Leimauftragungseinheit (30) is connected and / or at the discharge line (45) at least one rinsing line (61) for discharging a, preferably in the Leimauftragungseinheit (30) introduced, rinsing medium for the glue application unit (30) from the glue application unit (30) is connected. Device according to claim 1, characterized in that the flushing line (51) or the flushing lines (51) for introducing a flushing medium outside the glue application unit (30) to the supply line (43) and / or to the discharge line (45) are connected. Device according to claim 1 or 2, characterized in that the flushing line (61) or the flushing lines (61) for discharging a flushing medium from the glue application unit (30) outside the glue application unit (30) to the supply line (43) and / or to the discharge line (45) are connected. Device according to one of claims 1 to 3, characterized in that at least one flushing line (51) for introducing a flushing medium using a, in particular switchable, valve (55), in particular control valve (55), to the supply line (43) and / or is connected to the discharge line (45) and / or at least one purge line (61) for discharging a purge medium using a, in particular switchable, valve (65), in particular control valve (65), to the supply line (43) and / or to the discharge line (45) is connected. Device according to one of claims 1 to 4, characterized in that in the feed line (43) and / or in the discharge line (45), a switching valve (71) is provided, so that depending on the position of the switching valve glue or the flushing medium at The Leimauftragungsorgan (5) arranged, preferably closed, Leimkammer is fed and / or glue or the flushing medium in a housing of the Leimauftragungseinheit (30) formed open container (21) can be fed to a medium. Device according to one of claims 1 to 4, characterized in that in the discharge line (45) and / or in the supply line (43) a, preferably second, switching valve (75) is provided, so that depending on the position of the switching valve glue or the rinsing medium can be removed from a, preferably closed, glue chamber arranged on the glue application member (5) and / or glue or the rinsing medium can be removed from a open container (21) formed in a housing of the glue application unit (30) for a medium. Device according to one of claims 1 to 6, characterized in that on the flushing line (51) for introducing a flushing medium, a pressure pump (53) is provided. Device according to one of claims 1 to 7, characterized in that on the flushing line (61) for discharging a flushing medium, a suction pump (63) is provided. Device according to one of claims 1 to 8, characterized in that in the feed line (43) to the glue application unit (30) between a first feed pump (42) and a housing (4) of the glue application unit (30) two, in particular controllable, valves (111 , 112), preferably in front of the entrance to the housing (4), and in the discharge line (45) between a housing (4) of the glue application unit (30) and a second delivery pump (46) two, in particular controllable, valves (113, 114) are provided. Device according to claim 8, characterized in that between two valves (111, 112) of the feed line (43) and between two valves (113, 114) of the discharge line (45), a connecting line (120) between the feed line (43) and the discharge line (45) is provided. Device according to claim 10, characterized in that in the connecting line (120) a, in particular controllable, valve (121) is arranged. Device according to one of claims 1 to 11, characterized in that a glue supply (40) via the feed line (43) with the glue application unit (30) is connected and / or a glue supply (40) for the glue application unit (30) via the discharge line ( 45) is connected to the glue application unit (30), wherein a first feed pump (42) on the input side with a glue supply (40) and / or a second feed pump (46) on the output side with a glue supply (40) are connected. A method for operating a device for applying glue to a strip of material (10) of the tobacco-processing industry, in particular tipping paper strip (10) according to one of claims 1 to 12, wherein a flushing line (51) for introducing a flushing medium, a flushing medium, in particular a Cleaning liquid or a gaseous medium, in the glue application unit (30) is introduced, so that the Leimauftragungsorgan (5) of the Leimauftragungseinheit (30) and / or parts of the Leimauftragungseinheit (30) are cleaned and / or introduced into the Leimauftragungseinheit (30) rinsing medium is removed from the glue application unit (30) via the purge line (61) for draining a purge medium.

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