EP2664244A2 - Gluing of strips of material for the tobacco processing industry - Google Patents

Abstract

The device has glue application unit such as screen roller that is arranged in housing (4). The glue is fed to the glue application unit through the supply line (43) that is connected with housing. The glue is conveyed from the housing through the discharge line (45) that is connected with housing. The controllable valves (111,112) are located at the entrance of the housing and arranged between the conveying pump (42) and housing through the supply line. The controllable valves (113,114) are arranged between the housing and feed pump (46) through the discharge line. An independent claim is included for filter setting machine.

Description

The invention relates to a device for applying glue to a strip of material of the tobacco-processing industry with a glue applicator arranged in a housing, in particular anilox roller, wherein by means of a supply line connected to the lead glue is conveyed to the housing or Leimauftragungsorgan or is and / or wherein by means of a With the housing connected discharge line glue is conveyed away from the housing or is.

Furthermore, the invention relates to a method for operating such a device and a housing of a Leimauftragungsorgans the tobacco-processing industry and a machine of the tobacco processing industry, in particular Filteransetzmaschine.

For the connection of cigarette filters with tobacco sticks usually tipping papers are provided on the one hand in each case the Wrap filter 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.

In addition, under the name TPA3000 from the company CB Kaymich & Co. Limited, Sheffield, Great Britain, a gluing device for gluing tipping paper strips known, for example, in filter attachment machines with the designation MAX of the patent applicant can be used. In this case, glue is removed from a glue reservoir by means of a rotating wheel and introduced into a glue chamber. Glue is removed from the glue chamber by means of the screen roller having the cups and applied to a tipping paper strip conveyed at a predetermined transport speed.

At high production speeds on a filter tipping machine, e.g. up to 20,000 cigarettes per minute, it is possible that the gluing on the tipping paper strip is insufficiently applied or that gaps or interruptions due to process-related disturbances in the gluing system form.

It is also in EP-B-1 500 438 a device for applying a flowable mass to a moving web of the tobacco-processing industry, in particular for applying glue to a web of paper, which is used as gluing device in a filter attachment machine for the production of filter cigarettes. With this device, liquid glue from a supply is continuously applied to a tipping paper strip, which is then cut in the tipping paper leaflet for connecting tobacco rods and filter plugs. With such a device flowable materials, such as glue, of different kinds are applied to different webs.

Based on this prior art, the object of the present invention is to improve the handling of Beleimungseinrichtungen the tobacco processing industry when used on machines of the tobacco processing industry, in particular Filteransetzmaschinen, in particular, the degree of cleanliness should be increased in a simple manner.

In a device for applying glue to a strip of material of the tobacco-processing industry with an arranged in a housing Leimauftragungsorgan, in particular anilox roller, is conveyed by means of a housing connected to the feed line glue or Leimauftragungsorgan or and / or wherein by means of a with the Housing connected discharge line glue is conveyed away from the housing or is, it is provided that at least one flow blocking device is provided in the supply, such that a flow or backflow of conveyed in the feed line or conveyable glue is prevented or reduced and / or in the discharge line is provided at least one flow blocking device, such that a flow or backflow of the conveyed in the discharge line or conveyable glue is prevented or reduced or is.

It is provided that during a production stop of a machine of the tobacco processing industry, in particular filter attachment, a gluing apparatus having an outer housing and in the housing a Leimauftragungsorgan, for example in the form of an anilox roller, completely removed from the machine or removed, wherein for this purpose the supply line and / or the discharge line are detachably coupled to the housing of the gluing apparatus, whereby uncontrolled leakage of glue from the housing or glue pot of the gluing apparatus or from the supply line and / or the discharge line to the, in particular open, using the flow blocking devices , Joints is prevented. Since no glue escapes from the lines or from the housing due to the intended Leimfließsperreinrichtungen at the connection points, the cleanliness in the area of the gluing apparatus on the machine is significantly increased. Thus, the machine is kept clean and the handling of the gluing apparatus improved. Preferably, the flow blocking device in the supply line between a pump, in particular pressure pump, and the housing and / or the flow blocking device is arranged in the discharge line between a pump, in particular suction pump, and the housing. Here, the pump of the supply and the pump discharge line outside the housing, ie outside the housing, and in particular on the machine side of the machine arranged.

In addition, a development is characterized in that the flow blocking device is designed as a, in particular with respect to the cross-section of the supply line or the discharge line, constriction or as a conduit constriction device. A targeted narrowing of the flow cross section in the supply line and / or in the discharge line also prevents flow or backflow of the glue in the supply lines.

For this purpose, it is further provided that the conduit constriction device is designed as a flow-blocking disc or as, preferably controllable or controllable, valve. In this case, the flow-blocking disc is preferably elastic, wherein the flow-blocking disc is self-opening, so that when applying a delivery pressure or suction glue passes through the locking disc with promotion of glue, while switching off the delivery pressure, the locking disc automatically the passage or the exit of glue on the locking disc prevented. For this purpose, for example, the flow-blocking disc is formed as an elastic disc with one or more slots. Flow of the glue in the supply lines, ie in the supply line and in the discharge line can also be achieved by a switchable or adjustable valve, so that closed before removing the gluing apparatus, the valve is or is, so that no glue is conveyed in the supply lines, whereby no glue at the separation point of the supply line or the supply line and the discharge line exits from the housing or the lines.

Furthermore, it is provided in a preferred embodiment that the supply line and / or the discharge line each have at least one, preferably arranged on the housing of Leimauftragungsorgans, line coupling or connecting piece, wherein preferably the flow blocking device is formed in the region of the line coupling or in the line coupling. For example, the housing of the Leimauftragungsorgans has connection stubs which are coupled to the supply and / or the discharge line, wherein the flow blocking device is formed for example in the form of a valve, wherein the valve is closed when removing the gluing apparatus from the machine and when inserted on the machine and connection with the supply line and / or the discharge line is opened or is.

Preferably, the line coupling of the supply line and / or the line coupling of the discharge line each have a, preferably on the housing of Leimauftragungsorgans outwardly projecting, nozzle or connecting piece, so that the gluing apparatus or the housing of the gluing apparatus when mounted on the machine in a simple manner is connected or coupled to the glue supply lines or is. Accordingly, a safe decoupling of the glue supply lines is possible even when disassembling the gluing apparatus from the machine.

In one embodiment, the nozzle or the connection piece on the housing corresponding flow blocking devices to prevent dripping or accidental leakage of glue from the nozzle, for example during disassembly.

Moreover, it is favorable if the flow blocking device is designed as a vacuum source arranged in or on the feed line, so that glue in the feed line is conveyed or conveyable counter to the direction of flow of the glue provided in the feed line, or if the flow blocking device is in or on the discharge line arranged vacuum source is formed so that glue in the discharge line in the direction provided in the discharge line flow direction of the glue, preferably in interrupted or stopped glue supply in the supply line, is conveyed or conveyed.

This makes it possible, for example, that glue is withdrawn from the coupling point in the supply line or in the discharge line, whereby a flow blocking device is accordingly formed. By moving the glue under negative pressure at the point of contact of the coupling or at the connection point, the glue is also prevented from dripping off.

Further, in a method of operating a device for applying glue to a strip of material, the tobacco processing industry is provided with a glue application member, in particular anilox roller, mounted in a housing, wherein glue is delivered to the housing or glue application member by means of a supply line connected to the housing Leim is conveyed out of the housing by means of a removal line connected to the housing, the housing being detachably couplable to the supply line and / or the discharge line, that prior to decoupling the housing from the supply line glue is sucked out of the supply line and / or from the housing by means of a vacuum source and / or before decoupling of the housing from the discharge line glue from the discharge line and the housing is removed.

It is provided that prior to disassembly of the gluing apparatus from a machine or before removal of the housing of the glue application member or gluing device glue from the housing and glue in the supply or in the discharge line from these at least partially removed, so that after Removal or suction of the glue from the lines and / or the housing during the disassembly of the gluing apparatus dries no glue from the corresponding facilities and the joints, whereby a clean removal of the gluing apparatus is possible.

In addition, it is additionally or alternatively possible in one embodiment of the method that after coupling the housing of the gluing apparatus with the discharge line, the discharge line and the housing with glue, in particular before the application of glue to a strip of material, are filled. Due to the fact that an empty discharge line and an empty housing is introduced into the discharge lines and the housing before the machine or glueing of a material strip of the tobacco-processing industry glue is achieved after start-up of the machine or the gluing apparatus that little or no air in the glue, which is derived from the housing via the discharge line is located.

The object is achieved by a device for applying glue to a material strip of the tobacco-processing industry with a glue application member arranged in a housing, in particular an anilox roller, wherein glue is conveyed to the glue application member by means of a supply line connected to the housing and / or wherein glue is conveyed out of the housing by means of a discharge line connected to the housing, which is further developed thereby in that two, in particular controllable, valves, preferably in front of the inlet to the housing, are provided in the supply line to the housing between a first feed pump or pressure pump and the housing and two, in particular, in the discharge line between the housing and a second feed pump or suction pump controllable, valves are provided.

By the use of at least two switchable valves in the supply and in the discharge line on the one hand safe operation of a gluing apparatus during the production of products on a machine of the tobacco-processing industry is achieved because reliable when switching the valves in the forward direction glue on the supply line by means of Pressure pump is conveyed and simultaneously sucked out of the discharge line via the valves connected in the passage position and an output side of the second arranged suction pump glue from the housing. In addition, a drip-free removal or disassembly of the gluing apparatus is achieved by the machine when the four valves are switched to the blocking position, so that dripping or run-on of glue in the supply line or in the discharge line is avoided.

Moreover, it is possible in a further embodiment of the device that 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, whereby a kind of bypass line between the supply line and the discharge line is achieved.

It is further advantageously provided that 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. This makes it possible that by appropriate switching of the valves in the feed line and the discharge line and in the interposed connecting line on the existing pressure pump and the suction pump also present after insertion of the gluing apparatus at the appropriate point of the machine of the tobacco processing industry part of the In this case, the first output-side valve of the discharge line is switched to the passage position, while the second valve of the discharge line is in the blocking position, so that glue from the pressure pump via the first output-side valve of the supply line and is conveyed via the valve located in the passage position of the connecting line to the discharge line, wherein the first output-side valve in the discharge line is also in passage position, while the input-side valve on the housing to the suction pump in locked position is located. After placement of the gluing apparatus on the machine, the valves in the supply line and the discharge line are switched to the passage position, while the valve in the connecting line between the supply line and the discharge line are in the blocking position. To form a glue circuit 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 from the housing of the Leimauftragungsorgan removed glue to the glue supply.

To remove the gluing apparatus with the housing, the first output-side valve on the pressure pump is switched to the blocking position, 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 before removal of the gluing apparatus glue from the supply line and the gluing apparatus is discharged by applying a negative pressure via the suction pump.

In the removal or disassembly of the gluing apparatus of the production machine of the tobacco processing industry, for example, Filteransetzmaschine, the valves of the supply and the valve in the connecting line in the blocking position, while with the suction pump, the valves on the discharge line in the passage position, so that glue is pumped out of the housing of the gluing apparatus. This is preferably done for a predetermined time to remove a predetermined amount of glue from the housing of the gluing apparatus. For removal, all valves are in the locked position, in which case both pumps, i. both pressure pump and 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 on the input side with a glue supply and / or the suction pump or second feed pump on the output side with a glue supply are connected, in particular preferably, the pressure pump and the suction pump are connected to the same glue stock.

A further solution of the problem is further provided by a device for applying glue to a strip of material of the tobacco processing industry with a arranged in a housing Leimauftragungsorgan, in particular anilox roller, which is conveyed by means of a housing connected to the supply of glue to the housing or Leimauftragungsorgan or is and / or wherein glue is conveyed away from the housing by means of a removal line connected to the housing, which is further developed in that the discharge line is connected to a glue supply, the discharge line being formed with an air separation device, preferably arranged in the glue supply to separate air bubbles from the glue contained in the removed glue. By the use of an air separation device in the formed glue circuit for the gluing apparatus, air is reliably removed from the glue, whereby preferably the separation of the air takes place as a result of gravity.

For this purpose, it is advantageously provided that the air separation device is arranged as a standpipe in the glue supply, so that the glue flowing back into the discharge line is introduced through a riser pipe into the glue supply.

Furthermore, the device is advantageously further developed in that in the lower region of the riser pipe and in the region of the connection of the discharge line with the glue supply a Leimentnahmestelle is provided outside of the riser, with the supply line for supplying glue to Leimauftragungsorgan connected is. This makes it possible that at an opening of the Leimvorrats recycled glue is introduced via the discharge line in the Leimvorrat and at the same time using the riser, the air or air bubbles are deposited in the recycled glue, wherein also at the same point of contact with the glue supply or at the opening a removal point is also provided, wherein the glue to be removed is removed in the lower region of the riser.

A further solution of the problem is carried out by a housing of a Leimauftragungsorgans, the tobacco-processing industry with an arranged in the housing Leimauftragungsorgan, in particular anilox, which is further developed in that on the outside of the housing, a connection coupling for connecting a supply line for supplying glue into the housing is provided, wherein below the connection coupling, a collecting container is arranged and / or on the outside of the housing, a connection coupling for connecting a discharge line for discharging glue from the housing is provided, wherein a collecting container is disposed below the coupling coupling. The use of collecting containers below the coupling couplings a reliable drip protection is achieved in the removal of a gluing apparatus on the housing of the apparatus.

Furthermore, the object is achieved by a housing of Leimauftragungsorgans the tobacco processing industry with an arranged in the housing Leimauftragungsorgan, in particular anilox roller, which is further characterized in that a sensor is provided above the housing bottom, wherein by means of the sensor in a non-contact manner the level of glue in the Housing is detected. Thereby, that the glue level on the case bottom up is determined contactless manner, the level is reliably and directly monitored during the operation of a Leimauftragungsorgans on a machine of the tobacco processing industry, since the sensor is directed to the free surface of the glue, so that the glue level in the housing not laterally against the wall surfaces of the housing is monitored, which due to the adhesion of the viscous glue no reliable level measurement is possible.

For this purpose, it is further provided that the sensor is designed as an ultrasonic sensor, wherein by means of the sensor, a generated ultrasonic measurement signal is directed from above, preferably vertically, on the free surface of the glue in the housing or on the housing bottom or is.

For this purpose, it is proposed according to an advantageous embodiment that a guide channel is arranged on the ultrasonic sensor, so that the ultrasonic measurement signal is guided in the guide channel to an outlet side of the guide channel or, wherein at the exit side the ultrasonic measurement signal from above, in particular vertically, on the surface of the glue or the bottom of the housing is or will be. In this case, the guide channel with the sensor, preferably releasably, be connected to the coupling side of the ultrasonic measurement signal. The position of the sensor can be chosen arbitrarily; It is crucial that the ultrasound measuring signal emerging at the outlet side of the guide channel is directed vertically downwards above the glue in the housing or above the housing bottom.

In addition, it is further provided that the sensor is arranged according to the housing top.

Furthermore, the object is achieved by a machine of the tobacco processing industry, in particular filter attachment machine with a device described above for applying glue to a strip of material of the tobacco processing industry or with a housing of a Leimauftragungsorgans the tobacco-processing industry is formed, to avoid repetition of the above statements expressly referenced.

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 Kreislauf für die Versorgung einer Leimauftragungsvorrichtung;

Fig. 2

schematisch eine Darstellung einer Leimauftragungsvorrichtung im Längsschnitt;

Fig. 3a, 3b

schematisch einen Verbindungsstutzen in einer perspektivischen Darstelllung und in einem Querschnitt

Fig. 4a, 4b

schematisch verschiedene Ansichten eines weiteren Verbindungsstutzens;

Fig.5a

einen Querschnitt durch eine weitere Ausführungsform eines Verbindungsstutzens;

Fig. 6a, 6b

verschiedene Ansichten der Außenseite eines Gehäuses eines Leimauftragungsorgans;

Fig. 7

schematisch eine Verbindungskupplung einer Zuführ- und Abführleitung für Leim an einem Leimvorrat;

Fig. 8a bis 8d

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

Below, the invention will be described by way of example with reference to embodiments without limitation of the general inventive idea, with respect to all in the text unspecified details of the invention is expressly made to the figures. Show it:

Fig. 1

schematically a circuit for the supply of a glue application device;

Fig. 2

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

Fig. 3a, 3b

schematically a connecting piece in a perspective view and in a cross section

Fig. 4a, 4b

schematically different views of another connecting piece;

5a

a cross section through a further embodiment of a connecting piece;

Fig. 6a, 6b

various views of the outside of a housing of a Glimauftragungsorgans;

Fig. 7

schematically a connection coupling a supply and discharge line for glue on a glue stock;

Fig. 8a to 8d

schematically a glue circuit according to the invention for supplying a Leimauftragungsorgans the tobacco processing industry with glue.

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 circuit for the supply of a Leimauftragungsorgans the tobacco-processing industry, which is arranged in a housing 4 and a glue container.

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 with 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 or the glue container and returned to the 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 of the patent applicant is known.

Based on Fig. 2 the operation of a glue application device 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 device. The glue application device has an arranged in a housing 4 and rotatably driven anilox roller 5, which is driven in rotation in the direction of the arrow 6. 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, a corresponding glue pattern is applied by the inclusion of glue from the wells of the anilox roller 5. 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 in the region of the glue application zone 9 cooperates with a counter-roller to apply a corresponding glue pattern on 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 delivery line 43 on the input side with the feed pump 42 (see. Fig. 1 ), so that from an external glue reservoir via the external feed line 43 glue is conveyed into the supply line 13.

How out Fig. 2 Furthermore, it can be seen that the glue chamber 3 is pressed against the surface of the anilox roller 5 via a pressing device 22 arranged on the back side of the glue chamber 3. The pressing device 22 may be formed in one embodiment by means of springs or pneumatic cylinders or the like.

The glue not consumed in the glue chamber 3 is removed from the glue chamber 3 and collected in the glue container or in the housing 4 on the underside of the housing. In this case, the glue 20 collected in a glue sump in the housing 4 by means of a suction tube 26, which with the discharge line 45 (see FIG. 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 tube 26 immersed in the glue 20, so that the glue collected at the bottom of the housing 20 is removed from the inside of the housing.

Furthermore, an ultrasound sensor 21 is arranged above the glue 20 or above the housing bottom on the upper side of the housing so that the level can be determined by means of the ultrasonic sensor 21 of the collected glue 20 in the housing 4 is detected. In this case, the ultrasonic measurement signal of the ultrasonic sensor 21 is directed vertically downwards on the free surface of the glue 20, so that by means of the ultrasonic sensor 21, the level of glue in the housing 4 is detected, whereby at a predetermined glue level of the collected glue 20 by suction from the suction pump 46th (see. Fig. 1 ) via the suction pipe 26 and the discharge line 45 (see. Fig. 1 ) Will get removed.

Below the ultrasonic sensor 21, a straight guide channel 27 is arranged, are coupled into the ultrasonic measurement signals of the ultrasonic sensor 21 on the upper side or upper inlet side and passed through the guide channel 27 to the lower outlet side or out. The ultrasound measuring signals at the outlet side of the guide channel 27 are directed vertically downwards onto the free surface of the glue 20 or onto the housing bottom. In an embodiment, not shown here, the guide channel 27 may also have bends or arcs, wherein the ultrasound measuring signals are directed downward on the glue 20 at the exit side of a provided with bends or curves guide channel. This makes it possible to provide the sensor at an arbitrary or preferred location on the housing, wherein the ultrasonic measurement signals of the sensor are passed through the, preferably laterally closed, guide channel.

In the FIGS. 3a, 3b different views of a connecting piece 51 are shown. Fig. 3a schematically shows a perspective view of the connecting piece 51, while in Fig. 3b a cross section through the connecting piece 51 is shown. The connection piece 51 has a shaft-like insertion side 52 and an outer ring 54 and a connection side 53 facing away from the insertion side 52, wherein the insertion side 52, for example, to the housing outer wall of a housing 4 (see. Fig. 1 . Fig. 2 ) of a gluing apparatus is inserted into a bore or the like, so that the connecting head portion 53 communicates with the conveying line 43 or 45 (see FIG. Fig. 1 ) can be connected. The connecting head 53 protrudes from the housing. The connecting head 53 is circular and has a kidney-shaped passage region 54, is conveyed by the glue.

In Fig. 3b is shown a cross section through the connecting piece 51. How out Fig. 3b it can be seen, the insertion side 52 is hollow or hollow cylindrical inside, wherein the insertion side 52 has a constant inner diameter over the entire length. Compared to the inner cross-sectional area of the insertion side 52, the passage region 54 is narrowed, wherein the passage region 54 is formed with a predetermined inclination relative to the hollow-cylindrical delivery region of the insertion side 52.

The constriction of the flow cross section and the ramp-like rise of the passage region 54 ensures that when the connection head 54 is separated from a delivery line, e.g. when disassembling the Leimauftragungsorgans with the housing 4 of the machine, glue due to the ramp-like formation of the passage area 54 can not escape from the connecting piece 51, since due to the rising passage area 54 of the glue can not pass over the outer edge of the passage area.

In this respect, flowing or refluxing of the glue from the interior of the insertion side 52 is prevented by the rise of the passage region 54. Thus, thereby an inventive Flow blocking device formed so that when separating the housing with the Leimauftragungsorgan of a delivery line using a in Fig. 3a and 3b shown connecting piece little or no glue can escape from the connection piece.

In Fig. 4a and 4b is another connecting piece 61 shown, which also prevents flow or backflow of glue. The in the FIGS. 4a and 4b Also shown on the outer side of the connecting head 63, a circular locking disc 66 made of rubber or other elastic material is disposed inside the locking disk 66 has slots 67 , which are arranged star-like to each other.

When the connection head 63 is connected to a feed line for feeding or discharging glue from a casing, and glue is supplied in one direction through the connection pipe 61 by applying a discharge pressure or a suction pressure, the pie-like parts formed by the slits 67 become Locking disc 66 pushed away from each other or pressed apart, so that glue passes through the locking disc 66.

If no glue is conveyed, then the elastic cake piece-like disk parts of the locking disk 67 move back to their original rest position, whereby glue from the interior of the connecting piece 66 does not escape to the outside. In the rest position, a blocking effect of the locking disc 66 is achieved, whereby a flow or backflow of glue from the interior of the connecting piece 61 is prevented.

Fig. 5 shows in cross section a connecting piece 71 which is formed in the manner of an automatic shut-off valve. For this purpose, the connecting piece 71 in the interior has a compression spring 73 mounted on one side, by means of which a ball 74 arranged on the other side of the spring is pressed against the other narrowed outlet of the connecting piece 71. If the connection piece 71 is withdrawn from a delivery line, then the ball 74 closes the right opening of the connection area due to the application of the spring force by the spring 73, by flowing or flowing glue back into the connection body 71 from the right opening of the connection piece 71 is prevented.

In order to open the check valve in the connecting piece 71, the corresponding connected area of a delivery line has a pin or the like to push the ball in the connecting piece 71 inwardly, whereby the passage opening is opened in the right area and thus glue are conveyed through the connecting piece 71 can.

By means of the in Fig. 3a, 3b and 4a, 4b and Fig. 5 shown connecting pieces 51, 61 and 71, a flow or back flow of glue from the connecting piece with unaffected delivery pressure or disassembly of the delivery lines, a flow or back flow of glue from the connecting piece to the outside prevented. Are the connecting pieces 51, 61 and 71 arranged with their Einsteckseiten to the housing outer walls of a housing for a Leimauftragungsorgan, it is thus disassembly of a gluing apparatus of a machine of the tobacco processing industry, the leakage of glue from the housing or from the connecting piece prevented, thereby there is a clean handling of the gluing apparatus.

In Fig. 6a and 6b are shown in further embodiments, perspective views of a housing outer wall of a gluing apparatus, wherein collecting container below the connection points 81, 82 are arranged for the feed lines for feeding and for conveying glue into the housing 4 and from the housing 4. Below the terminals 81, 82, a collecting container 83 is arranged so that when disassembling a gluing apparatus from the terminals 81, 82 dripping glue from the collecting container 83 is collected, whereby the mounting point on the machine of the tobacco processing industry of glue is kept clean.

At the in Fig. 6b shown embodiment, a collecting container 84, 85 is shown on the housing wall below the terminals 81 in order to absorb at the disassembly of the gluing apparatus from the housing 4 leaking glue at the connection points 81, 82 for the delivery lines.

In Fig. 7 schematically a glue supply 91, for example in the form of a bag or the like, shown. The glue supply 91 has on the lower side of a removal point 92 at the same time glue is removed from the glue supply 91 and at the same time glue on the connecting line 48 (see FIG. Fig. 1 ) Leim from a housing of a Leimauftragungsorgans in the glue supply 91 is returned. For this purpose, the connection line 47 is connected via a connection 93 with a connection head 94.

The connection head 94 is fixedly connected to the glue supply 91 at a corresponding opening of the glue supply 91. Inside the glue supply 91, the connection head 94 has a riser 95, which in the region of the connection region with the delivery line 47 at the bottom of holes or apertures 97, so that the conveyed back by a Leimauftragungsorgan glue through the openings 97 passes into the interior of the riser 95, and the glue, which may have air bubbles or air bubbles, is conveyed in the interior of the riser 95 upwards , whereby the air bubbles are separated from the glue. At the upper end of the riser 95, the degassed glue exits and flows to the amount of glue present in the glue reservoir 91, which is provided with the reference numeral 96.

The riser 95 protrudes into the glue reservoir 91 and is surrounded in the region of the removal point 92 in the lower region of the glue supply 91 by a nozzle 98, wherein between the outer wall of the riser 95 and the inner wall of the nozzle 98 glue can flow down to the removal point 92, because the outer wall of the riser 95 and the inner wall of the nozzle 97 are spaced from each other. By applying a negative pressure to the delivery line 41, glue is removed from the glue supply 91 via a connection 89 connected to the connection head 94.

In order to safely separate the return of glue from the housing 4 of the glue application member into the glue supply 91 and the removal of glue from the glue supply 91, the connection head 94 has a seal 88 which is arranged on the riser 95 outside the glue supply 91 that glue can be removed from the glue supply via the delivery line 41.

In the FIGS. 8a to 8d are various schematic representations of a glue circuit for the supply of a arranged in the housing 4 Leimauftragungsorgans, with the material strips of the tobacco-processing industry, especially paper webs, with Glue or be provided with a glue pattern. In the FIGS. 8a to 8d Different operating modes are shown.

The supply line 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 line 43 and the Outlet 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.

In Fig. 8a the operating situation is shown, in which the gluing apparatus with the housing 4 is mounted on the machine or is used, for this purpose, the housing 4 is filled with glue on the suction side until a level sensor detects a predetermined glue level in the housing 4, so that the Feed pump 42 is turned off. In this case, the valve 112 and 113 in the blocking position, wherein the valves 111, 121 and 114 are connected in passage position, so that when the 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.

The production situation is in Fig. 8b shown schematically. Here, the valves 111, 112 are connected in the supply line 43 in the passage position. Likewise, the valves 113, 114 in the discharge line 45 are also connected in the passage position. The valve 121 is in the blocking position, so that no glue from the feed pump 42 to Outlet line 45 is promoted. 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 with the valves 113, 114 switched on and the suction pump 46 switched on, back into the glue reservoir 40.

If, after a production run, the gluing apparatus is to be removed from the machine, then the devices are to be removed in accordance with the method described in Fig. 8c operated mode shown. In this case, glue in the feed line 43 and on the pressure side glue is first removed from the glue application device. 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 blocking position so that when the valves 112, 121 and 113 are switched on, ie in the passage position, glue is conveyed back from the housing 4 into the glue reservoir 40 from the pressure side of the gluing apparatus.

When removing the gluing apparatus (cf. Fig. 8d ) With the housing 4, that is, when disassembling the housing 4 from the machine, 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 connected in blocking position, so that the lining apparatus with its housing 4 can be separated from the lines 43 and 45, and a virtually glue-free gluing apparatus, ie that little glue is in the housing 4, can be dismantled from the machine.

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. <U> REFERENCE LIST </ u> 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 20 glue 21 ultrasonic sensor 22 pressing device 26 suction tube 27 guide channel 40 Leimvorrat 41 management 42 pressure pump 43 delivery line 45 delivery line 46 suction pump 47 delivery line 51 connecting pieces 52 insertion side 53 connecting head 54 Passage region 55 ring 61 connecting pieces 62 insertion side 63 connecting head 65 ring 66 locking disc 67 slot 71 connecting pieces 81 connection 82 connection 83 receptacle 84 receptacle 85 receptacle 88 poetry 89 connection 91 Leimvorrat 92 sampling point 93 connection 94 connecting head 95 riser 96 glue 97 perforation 98 Support 111 Valve 112 Valve 113 Valve 114 Valve 120 connecting line 121 Valve M filter attachment

Claims (10)

Device for applying glue to a material strip (9) of the tobacco-processing industry with a glue application element (5), in particular anilox roller (5), arranged in a housing (4), glue being attached by means of a feed line (43) connected to the housing (4) is conveyed to the Leimauftragungsorgan (5) or is and / or being removed by means of a with the housing (4) discharge line (45) glue from the housing (4) or is, characterized in that in the feed line (43) to the housing (4) between a first feed pump (42) and the housing (4) two, in particular controllable, valves (111, 112), preferably in front of the entrance to the housing (4) are provided and in the discharge line (45) between the housing (4) and a second pump (46) two, in particular controllable, valves (113, 114) are provided. Device according to claim 1, 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 2, characterized in that in the connecting line (120) a, in particular controllable, valve (121) is arranged. Device according to one of claims 1 to 3, characterized in that the first feed pump (42) on the input side with a glue supply (40) and / or the second feed pump (46) on the output side with a glue supply (40) are connected. Device according to one of claims 1 to 4, characterized in that the discharge line (45) is connected to a Leimvorrat, wherein the discharge line (45) is formed with a, preferably arranged in the glue reservoir, Luftabscheideeinrichtung to contained in the conveyed glue contained air bubbles to segregate the glue. Device according to one of claims 1 to 5, characterized in that on the outside of the housing (4) a connection coupling for connecting a supply line (43) for supplying glue in the housing (4) is provided, wherein arranged below the coupling connection a collecting container is and / or on the outside of the housing (4) a connection coupling for connecting a discharge line (45) for removing glue from the housing (4) is provided, wherein below the connection coupling a collecting container is arranged. Method for operating a device for applying glue to a material strip (9) of the tobacco-processing industry with a glue application element (5), in particular anilox roller (5), arranged in a housing (4), wherein by means of a supply line connected to the housing (4) (43) glue is conveyed to the glue application element (5) and / or wherein glue is conveyed away from the housing (4) by means of a discharge line (45) connected to the housing (4), the device being according to one of claims 1 to 6 is formed. Device for applying glue to a material strip (9) of the tobacco-processing industry with a glue application element (5), in particular anilox roller (5), arranged in a housing (4), glue being attached by means of a feed line (43) connected to the housing (4) is conveyed to the housing (4) or glue application member (5) and / or wherein glue is conveyed away from the housing (4) by means of a discharge line (45) connected to the housing (4), characterized in that the discharge line ( 45) is connected to a glue reservoir, wherein the discharge line (45) is arranged with a, preferably arranged in the glue reservoir, Luftabscheideeinrichtung to separate air bubbles contained in the conveyed glue from the glue. Housing (4) of a glue applicator (5), the tobacco processing industry with a in the housing (4) Leimauftragungsorgan (5), characterized in that on the outside of the housing (4) has a connection coupling for connecting a feed line (43) for feeding of glue in the housing (4) is provided, wherein below the coupling connection a collecting container is arranged and / or on the outside of the housing (4) a connection coupling for connecting a discharge line (45) for removing glue from the housing (4) is provided, wherein below the connection coupling a collecting container is arranged. Machine of the tobacco processing industry, in particular a filter attachment machine, with a device for applying glue to a material strip of the tobacco processing industry according to one of claims 1 to 6 or according to claim 8 or with a housing according to claim 9.

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