EP2285693A1

EP2285693A1 - Method and device for producing cigarette packs

Info

Publication number: EP2285693A1
Application number: EP09757150A
Authority: EP
Inventors: Stefan Harms; Sylvia Rose; Wolfgang Rohwedder
Original assignee: Focke and Co GmbH and Co KG
Current assignee: Focke and Co GmbH and Co KG
Priority date: 2008-06-06
Filing date: 2009-04-21
Publication date: 2011-02-23
Anticipated expiration: 2029-04-21
Also published as: DE102008027259A1; EP2319767B1; EP2319767A1; CN102099252B; EP2285693B1; WO2009146766A1; US8690744B2; ES2655880T3; CN104118604B; CN104118604A; US20110118098A1; CN102099252A

Abstract

The invention relates to a method and a device for producing packs, particularly cigarette packs, from blanks (11, 44), wherein individual regions of a pack blank (11) are glued to each other, and optionally to one or more separate blanks (44), in that the pack blank (11) is provided with individual glue portions (28, 29) by means of a valve, or a group of valves (26), and cut regions to be glued together are subsequently held or pressed together, wherein the individual glue portions (28, 29) are applied onto the cut regions by means of the glue valve (27), or the group of glue valves (26), and/or wherein a control and/or regulating device (65) automatically controls and/or regulates the size or quantity of the glue portion (28, 29) generated in each case by the at least one glue valve (27) during a single valve opening cycle as a function of at least one parameter.

Description

Method and device for producing cigarette packets

description

The invention relates to a method for producing packs, in particular cigarette packs, from blanks, wherein individual areas, in particular folding flaps, of a pack blank are connected to each other and optionally to one or more separate blanks by the pack blank and / or the separate blank by means of a Leimventils or a group of glue valves in areas with individual, spatially separated glue portions, in particular glue drops, is provided and then adhered to the cutting areas adjacent to each other or pressed together. The invention further relates to a device for carrying out the method and a valve, which can be preferably used in the context of the method and as part of the device. In this case, the valve has a valve housing, an outlet or valve opening and a closure member with which the valve can be moved back and / or forth between an open position and a closed position.

In the production of cigarette packs individual areas of the respective blank are glued together. In addition, separate blanks, such as a collar or an inner blank in which the cigarette block is wrapped, are usually glued to the blank. For this purpose, it is known to provide individual areas of the blank using glue valves with individual glue portions, in particular glue dots.

Often, however, there is glue contamination when gluing the blank areas. This is primarily due to the fact that the glue valves apply too much glue in small-area trim areas. The excess glue occurs when pressing together the areas to be bonded undesirable outward and dirty other areas of the blank.

Furthermore, it is disadvantageous in the known gluing of cigarette packet blanks that, during the production process, the constant glue proportion or size set on the glue valves, resulting during a valve opening cycle, or

quantity changed unintentionally. Because unintentionally warms up by the waste heat of the Packaging machine of glue in the course of the production process. This leads to a decrease in the glue viscosity. At the start of production, when all machine parts are still cold, the glue therefore has a higher viscosity than after a certain production period. From a lower adhesive viscosity, however, an otherwise larger unimpaired quantity of the glue leaving the valve during a single opening cycle follows, with otherwise unchanged valve settings.

Based on this prior art, it is an object of the present invention to provide a method and an apparatus of the type mentioned, with which a precise as possible gluing the blanks is possible. It is another object of the present invention to provide a valve that can be used for this purpose.

This object is achieved by a method having the features of claim 1, a method having the features of claim 4, a device having the features of claim 22 and by a valve having the features of claim 18.

Accordingly, the inventive method for producing cigarette packs according to claim 1, characterized in that the individual, spatially separate Leimportionen - especially glue drops - for bonding the individual blank sections targeted in at least two different portion sizes or portion amounts to the respective package blank and / or the respective separate Cut to be applied. It can thus be applied in critical areas of the blank, in particular in marginal areas, for example, smaller portion sizes, so smaller amounts of glue than further inside the blank. Correspondingly, the risk is reduced that glue is pressed outwards or comes to the outside when holding together the blank areas to be glued together.

Accordingly, in this embodiment of the invention, the glue portions which are spatially separated on the blank have different glue amounts or glue sizes. These individual spatially separated portions are advantageously generated only within a single valve opening cycle. In this case, an opening cycle starting from the closed valve comprises the one-time opening of the valve and subsequent closing thereof. Alternatively, in this embodiment, the

2009050784 Invention but also be provided in principle, the individual separate Leimportionen each by repeatedly opening the valve to produce.

In the independent embodiment of the invention according to claim 4, the glue portions are applied to the blank areas by means of the glue valve or the group of glue valves. A control and / or regulating device automatically controls and / or regulates the quantity of the respectively produced glue portion generated by the at least one glue valve during a single valve opening cycle, depending on at least one parameter.

The amount or the size of the respective glue portion in this embodiment thus refers to the portion or portion size which is generated during a single opening cycle, which comprises starting from the closed valve the valve is opened once, followed by closing.

The parameter, depending on which the size or quantity of the produced glue portions is controlled and / or regulated, is preferably a measured quantity which is measured continuously or at predetermined time intervals and influences the size / amount of glue.

In a further embodiment of the invention, this is at least one measuring variable influencing the viscosity of the glue and / or at least one measured variable influenced by the viscosity of the glue. Advantageously, the measured quantity is the temperature of the glue supplied to the glue valve or located in the glue valve and / or the pressure downstream of a feed pump, under which the glue is supplied to the glue valve.

Additionally or alternatively, the measurand may be a characteristic indicative of movements of a closure member that moves at least partially within the glue valve within the glue.

As far as said closure member is concerned, it generally moves between a closed position preventing the release of glue from the valve and an opening position enabling the glue outlet. In order to appropriately control and / or regulate the respective size of the size of the glue, it is therefore advantageous to use the time

2009050784 Dated in which the closure member is in the open position, depending on the mentioned, the viscosity of the glue influencing or influenced by the Leimviscosity measured variable controlled and / or regulated.

A valve for flowable media, which can be used for such a method, according to claim 18, a valve housing, an outlet or valve opening and the closure member, with which the valve between the open position and the closed position back and / or forth , The valve is characterized by at least one sensor for measuring the viscosity of the flowable medium, for example glue, and / or for measuring the at least one variable influencing the viscosity of the flowable medium and / or for measuring the at least one measured variable influenced by the viscosity of the flowable medium , Such a valve can of course be used not only for glue, but for all flowable media with variable viscosity.

In a preferred embodiment, the sensor of the valve is a temperature sensor with which the temperature of the flowable medium or glue present in the valve can be measured and / or a sensor for detecting at least one characteristic which determines the movements of the closure member moving within the medium of the valve. Preferably additionally but also alternatively, the valve can have an acceleration sensor, with which accelerated movements of the closure member within the valve housing of the valve can be detected.

Further features of the invention will become apparent from the appended subclaims, the following description of a preferred embodiment and from the accompanying drawings. Show:

Fig. 1 a spread blank for a cigarette pack, namely a

Folding box (Hinge-Lid) with printed glue dots,

2 shows a blank assembly of a packaging machine for the production of folding boxes in side view (partially cut),

3 is a vertical section through a glue valve of the blank unit of FIG. 2,

2009050784 4 is a current-time diagram showing the current intensity of the electric current through an electromagnet of the glue valve of FIG. 3;

5 shows a schematic illustration of the control / regulation processes in the control / regulation of a group of glue valves according to FIGS. 1 to 3,

Fig. 6a and Fig. 6b show two schematic representations in the valve acting magnetic

Forces.

The details shown in the drawings are concerned with the manufacture of packages 10, namely cigarette packs of the folding box or hinge-lid type from blanks.

A pack 10 essentially consists of a pack blank 11 according to FIG. 1 made of (thin) cardboard. The pack 10 in this case has a lower box part 12 and a lid 13. The lid 13 is connected via a line joint 14 with the lower box part 12.

The relevant package blank 11 forms marked by fold lines surfaces for a front wall 15, a bottom wall 16, a rear wall 17 and inner side tabs 18 and outer side tabs 19. To form the lid 13, the blank 11 consists of a lid rear wall 20, an end wall 21 and This is followed by a lid inner tab 23, which is folded against the inside of the lid front wall 22 and connected thereto. Inner lid side flaps 24 and outer lid side flaps 25 are provided to form lid sidewalls.

The blank 11 is completely prefabricated. Usually, an outside of the finished package 10 is provided with a full-surface printing. An inside of the blank 11 is unprinted.

2009050784 The package blank 11 is provided during manufacture by a group 26 of glue valves 27 with individual, spatially separated glue portions, namely punctiform glue drops. A special feature of the invention is that, in contrast to the prior art, glue spots of different drop size or drop quantity are used.

In the embodiment of FIG. 1, two different drop sizes have been used, namely larger glue spots 29 and smaller glue spots 28.

The glue points 28a, 29a in the region of the outer side tabs 19 and correspondingly the glue points 28b, 29b in the region of the outer lid side tabs 25 serve to connect the side tabs 19, 25 with the associated inner side tabs 18 and 24, respectively.

In the region of the front wall 15 of the box part 12 four glue points 29 c are arranged, which serve for fixing a separate blank 44 with the package blank 11, namely a so-called collar. The collar 44 is further fixed by arranged on the inner side lobes 18 glue points 29c. Further glue spots 29d in the region of the front wall 15 and in the region of the rear wall 17 and the inner side flaps 18 hold the contents of the package, namely a separate inner blank, not shown, surrounding a group of cigarettes, usually made of tinfoil.

For gluing the lid inner flap 23 to the lid front wall 22, glue spots 29e are applied in the area of the lid front wall 22 and, corresponding to this, glue spots 29f in the region of the lid inner flap.

It is particularly important that the smaller glue spots 28 are applied in different marginal areas of the package blank 11, while the larger glue spots 29 are arranged predominantly further inside the blank 11. This is intended in particular to prevent surplus adhesive being present when the individual areas to be bonded are pressed against one another or pressed against one another, which penetrates to the outside and, in particular, contaminates the printed side of the package blank 11.

2009050784 Smaller glue drops 28 are advantageously used according to the invention wherever this necessitates the nature of the surfaces to be bonded to each other.

2 shows that part of a packaging machine for the production of cigarette packs 10, on which the glue drops 28, 29 of different size are applied to the individual blanks 11, namely a so-called cutting unit 30.

From a magazine 31 of the cutting unit 30, the package blanks 11 by means of a separating device, namely a rotating Abrollrad 32, isolated. For this purpose, 32 suction openings are arranged on the peripheral surface of the Abrollrades, which are acted upon by negative pressure. The Abrollrad 32 is disposed below the blank magazine 31 and takes during a rotation in each case the lowest blank 11 of the magazine 31 by suction with, and transfers this in the course of (partial) rotation of a first pair of conveying rollers 36. The first pair of conveying rollers 36 and a subsequent , further pair of conveyor rollers 37 convey the blank 11 along a slightly inclined relative to the horizontal conveyor track 33 which is disposed below the Abrollrades 32.

The blanks 11 are stacked on top of each other within the magazine 31, with one usually printed side of the blank 11 pointing upwards. After the storage of the respective blank 1 1 on the conveyor track 33, the unprinted side of the blank 11 points upwards.

The conveyor track 33 has an upper guide 34 and an underpass 35. Between the upper guide 34 and the underpass 35, the individual blanks 11 are conveyed further in succession by means of the conveyor roller pair 37 until they reach the region of a folding turret 38.

Before reaching the folding turret 38, i. At the beginning of the conveying movement on the conveyor track 33, successive blanks 11 are provided with the glue drops 28, 29 downstream of the second conveyor roller pair 37. For this purpose, the glue valve group 26 of glue valves 27 is positioned above the upper guide 34. The glue valve

2009050784 gruppe is part of a glue application facility, which will be described in more detail later.

After applying the individual glue drops 28, 29, the glued blanks 11 are transported in a manner known per se in the direction of the folding turret 38 until the respective blank 11 lies above a pocket 39 of the folding turret 38. By means of a Justierarms 40, the respective blank 11 is aligned and then pressed by a punch 41 along folding walls 42 of a folding shaft in the pocket 39. During cyclic rotation of the folding turret 38 about a central shaft 43, the blank 11 is guided to various folding stations arranged along a circular arc in which complex folding operations are also carried out in a manner known per se. In particular, cigarette blocks are supplied which are enveloped by blanks derived from stanniolbobins. Further, the respective packing collar 44 is introduced there in the folding process. The provided with glue blank areas of each blank 11 are folded in the manner already described above and already partially glued together. After leaving the folding turret 38, the respective blanks 11 are already largely folded and fed to a Faltweichenstation not shown. There, the last folds and bonds are made.

In a special way, the glue application device is formed, in particular the valve group 26 of the glue application device. FIG. 3 shows a single glue valve 27 of the glue valve group 26. It has a valve housing 45, to which a flowable medium, in this case glue, is supplied via a glue line 46. The individual glue portions can emerge from a lower valve opening 47, which are delimited by a conical or conical valve seat 48. With the valve seat 48, a movable closure member 49 cooperates. The closure member 49 has a valve body 48 and the valve opening 47 facing closing body 50. This closing body 50 is spherical. When the valve opening 47 is closed, the closing body 50 holds a sealing engagement with the valve seat 48. The closing body 50 is connected via an intermediate piece 51 to a piston piece 52 as part of the closure member 49. The piston piece 52 and thus the closure member 49 is within the valve housing 45 in the direction of the valve seat 48 and moved back, so back and / or forth or moved up and down.

2009050784 Above the valve seat 48, a valve chamber 53 is formed, into which the glue line 46 opens and from which glue exits via the valve opening 47 when the valve is open.

The valve housing 45 is provided with a continuous, open on the opposite side to the valve opening 47, in cross-section interior 54. This is closed to the outside, by a threaded bolt 55 with seal 56. The adjustable threaded bolt 55 is also a stop for the reciprocating movements of the closure member 49th

The closure member 49 is movable by an actuator in the closed position and by an antidote in the open position. The actuator is preferably constantly effective, so that the closed position of the valve or the closing piece 50 is the normal position. The return member for moving the closure member 49 into the opening position is an electromagnet 57, which surrounds the closure member 49 at least in a partial region. The metallic piston piece 52 acts within a coil of the electromagnet 57 as its core. When the power supply, therefore, a magnetic force is transmitted to the piston piece 52 and thereby moves the closure member 49 in total in the open position.

The closure member 49 is preferably permanently urged in the closing direction by a closing means. This is formed in the present embodiment as a permanent magnet which exerts a permanent magnetic force on the closure member 49 in the sense of a closing movement. The permanent magnet consists of two individual magnets 58, 59, one of which is firmly attached to the valve housing 45 and the other to the closure member 49. In the present case, the single magnet 58 is attached to the end portion of the threaded bolt 55, in the region of the piston piece 52 facing end surface. The single magnet 58 is seated in a recess or depression in the end region of the threaded bolt 55, and slightly set back relative to the end or end face of the threaded bolt 55. The individual magnet 58 is thereby protected.

The other single magnet 59 is attached in an analogous manner to the (upper) end of the piston piece 52 or embedded in a corresponding recess. The individual magnets

2009050784 58, 59 therefore have a (small) distance from each other even when the glue valve is open.

The adjacent permanent magnets 58, 59 are positioned so that like poles are facing each other, for example the north poles. As a result of the permanent individual magnets 58, 59, a repulsive force is permanently transmitted to the closure member 49, so that it is acted upon in the closed position. The opening movement by the electromagnet 57 overcomes this permanent closing force.

Medium or glue can reach into the area of the permanent magnets 58, 59. The region of the closure member 49 or its piston piece 52 is provided with a polygonal or approximately hexagonal outer contour, so that cavities are formed with respect to the cylindrical inner space 54, through which glue can reach into the region of the individual magnets 58, 59. A spacer 60 at the upper end of the piston piece 52 is provided with radially directed passage openings or interruptions 61, which allow the passage of glue, so that it can flow out of the relevant area again. Instead of a spacer 60 with interruptions 61, a plurality of spacers may be attached, which, like the spacer 60, the minimum distance between the two individual magnets 58, 59 ensure.

The valve may be provided with a single, central valve opening 47. Alternatively, multiple valve or nozzle openings may be present.

It is particularly important that the valve 27 further comprises a temperature sensor 62. This is positioned such that the measuring head 63 of the temperature sensor 62 projects into the valve chamber 53. In other words, the temperature sensor 62 is positioned so that the temperature of the glue in the valve chamber 53 can be measured. The temperature sensor 62 is connected to a cable connection 64 with a control and / or regulating device 65 controlling and / or regulating the glue valve 27.

Furthermore, the valve 27 has an acceleration sensor 66. The acceleration sensor 66 projects from the top side of the valve 27 into the upper housing wall of the valve 27. It is arranged in such a way that it accelerates acceleration.

2009050784 can detect, which completes the closure member 49 in the context of the opening and closing movements. The acceleration sensor 66 is connected to the control and / or regulating device 65 with a cable connection 67.

Depending on the measurement results acquired by the sensors 62, 66, the valve 27 is controlled and / or regulated. This will be explained in more detail below with reference to FIG. 5.

With the glue valve group 26, the glue spots 28, 29 of different size are applied to the respective blank 11. The Leimventilgruppe 26 has for this purpose across the longitudinal extent of the blank six arranged in a row glue valves 27. The individual glue valves 27 are in each case constructed like the glue valve 27 shown in FIG. Each of the size valves 27 is attached to a common carrier 68 of the glue valve group 26. The glue valve group 26 and thus each individual glue valve 27 is supplied with glue via a common glue feed 69. In the interior of the group carrier 68 run individual branch lines that lead the glue from the central, common glue supply 69 to the individual glue valves 27, in particular to the respective glue lines 46 of the glue valves 27th

The glue is supplied by means of a feed pump 70 of the glue application device, which promotes glue from a reservoir, not shown, in the direction of the group valve 26. A downstream of the feed pump 70 arranged pressure regulator 71 allows the setting of a suitable working pressure. By means of a pressure transducer 72 arranged downstream of the pressure regulator 71, the current actual pressure can be read out.

From the individual valves 27 of the valve group 26, control lines 73 respectively lead to corresponding outputs of the control and / or regulating device 65. In the present exemplary embodiment, the transmission of the control signals to the glue valves 27 is wired. In principle, of course, it is also conceivable to transmit the control signals wirelessly.

The power supply of the individual glue valves 27 is effected by a separate, not shown, power source.

2009050784 According to the invention, the sizes of the glue spots 28, 29, which are generated by the glue valves 27, are automatically controlled and / or regulated as a function of at least one parameter. Specifically, in the present case, two measured variables are measured, which are influenced by the viscosity of the glue or are dependent on it.

On the one hand, this is the glue temperature measured by the temperature of the respective temperature sensor 62. On the other hand, accelerated movements of the closure member 49 are detected by the acceleration sensor 66.

All relationships are explained in more detail with reference to FIGS. 3, 4 and 5:

At the beginning of an opening of the glue valve 27, the closing member 49 accelerates upward by the magnetic force caused by the solenoid 57, that is, the shutter 49 is accelerated from the zero speed to a certain terminal speed. This acceleration - initial acceleration 86 in the acceleration / time diagram 87 of FIG. 4 - registers the acceleration sensor 66.

In order to enable the entire, at least initially accelerated opening movement of the closure member 49 through the viscous glue, the closure member 49 is initially charged with a first, relatively larger force - opening force. For this purpose, the electromagnet 57 is flowed through by an electric current 88 of a certain comparatively greater magnitude -opening current-which effects the opening force acting on the closure member 49, cf. the current / time diagram 89 of FIG. 4.

At the end of the opening movement, the closure member 49 abuts on the threaded bolt 55, namely on its underside. The closure member 49 is therefore braked in the moment of attack, namely accelerated negatively to zero speed. This acceleration movement - negative final acceleration 90 - measures the acceleration sensor 66th

In order to hold the closure member 49 now in this open position, only one compared to the opening force lower holding force must be expended. To this

2009050784 Purpose, the flow of current through the electromagnet 57 can be reduced after the stop of the closure member 49 on the threaded bolt 55. Accordingly, only a current 91 of lesser intensity, which is referred to below as the holding current 91, flows relative to the opening current 88.

In order subsequently to return the valve 27 to the closed position, the flow of current through the electromagnet 57 is inhibited, i. reduced to zero.

Since the closure member 49 is moved within the glue, its movements naturally depend directly on the viscosity of the glue. Specifically, in the present case, the viscosity-dependent time duration is measured by means of the acceleration sensor, which requires the closure member 49 to be moved from the closed position to the open position. This period of time - opening time - can be determined by measuring the time t which elapses between the initial acceleration 86 of the closure member 49 at the beginning of the opening movement and the negative final acceleration 90 at the end of the opening movement. Depending on the current viscosity of the glue surrounding the closure member 49, more opening time t or less opening time t.

The measurement results of the opening time flow into the control and / or regulation of the respective glue valve 27 or the glue valve group 26 in that the time duration of the force effect of the opening force, ie the time duration in which the opening flow 88 flows, is adapted to the measured opening time , In the present embodiment, the time period in which the opening current flows through the electromagnet 57, equated to the measured opening time.

As already described, the higher the glue temperature, the lower the viscosity of the glue. This results in otherwise the same conditions correspondingly larger glue drops that pass through the valve opening 47 to the outside. However, in order to achieve a constant glue drop size, for example, in the case of a glue temperature which increases over the course of time in the production process, the times during which the glue valve 27 is opened must be adapted correspondingly to the changing viscosity or to the changing glue temperature. Accordingly, the shutter member 49 of the size-reducing valve 27 becomes in the case of decreasing adhesive viscosity over, respectively

2009050784 kept smaller time intervals in the opening position enabling the glue exit to achieve a constant glue point size. Accordingly, the time period in which the holding current 91 flows through the electromagnet 57 is appropriately lengthened or shortened.

Schematically shown in FIG. 5 by a dot-dashed arrow that the corresponding acceleration signals 74 of each of the glue valves 27 are detected. The acceleration signals 74 are transferred to the control and / or regulating device 65 at their inputs. In a corresponding manner, the temperature signals 75 originating from the respective temperature sensors 62 are likewise communicated to the control and / or regulating device 65. Alternatively, it is of course possible to equip only one of the glue valves 27 of the group valve 26 with the corresponding sensors 62, 66. This selected glue valve would then serve as a representative of the other glue valves 27 and the other glue valves 27 would be controlled and / or controlled in an analogous manner depending on the measurement results on the selected glue valve 27.

As a further input variable of the control and / or regulating device 65, the engine speed 76 is supplied. The measurement of the engine speed takes place in the usual way via an engine speed sensor 77.

Finally, the control and / or regulating device 65 as input variables nor pressure signals 78 passed, which generates the pressure transducer 72.

In the control and / or regulating device 65, the aforementioned input variables are processed or evaluated. Depending on the input variables, the

Valves 27 via the control lines 73 control signals supplied. Become concrete

Control signals supplied, which influence the current flowing through the respective electromagnet 57 of the respective valve 27 current, namely both in terms of

Amperage and in terms of the corresponding times at which the current flows or in terms of time periods of the current flow.

For this purpose, the control and / or regulating device 65 can refer to stored control curves 79 as a function of the input variables. These give time-dependent current intensities, with which the respective electromagnet 57 of the respective

2009050784 Valve 27 is acted upon. In principle, it is also conceivable that the control and / or regulating device 65 independently calculates such control signals as a function of predetermined regularities.

In the selection of the control curves 79 or in the calculation thereof, the control and / or regulating device 65 accesses a database 80 in which various sets of parameters, in particular selectable, are stored, which are to be glued to the cigarette pack 10 or to be glued Blank 11 are associated. This set of parameters may include, for example, machine speed 81. Further, the data memory 80 may include various glue drop sizes 82a-82d.

The operator can therefore choose, for example, which droplet size should be set for the respective cut. This selection can be done individually for each individual valve 27 of the group valve 26 in particular.

Further, various glue dot patterns 83a-83c may be stored in the database 80. The operator can select a glue dot pattern 83 suitable for the blank 11 to be glued. Accordingly, the glue valves 27 and the glue valve group 26 are controlled.

Also, the glue type 84 may be a parameter that enters into the selection of the control curves 79 or in the calculation of the same. Thus, depending on glue types 84a, 84b, different viscosity / temperature curves 85 can be deposited, which are used by the control and / or regulating device 65.

Another important aspect of the invention will finally be explained with reference to FIGS. 6a and 6b. It relates to the alignment of the individual magnets 58, 59 of the valve 27. It has been shown in experiments that the desired, caused by the electromagnet 57 closing movement of the closure member 49 is achieved primarily in the Fig. 6a, 6b illustrated constellations:

In the constellation according to FIG. 6a, the individual magnets 58, 59 are arranged such that their south poles lie directly opposite one another. An opening movement of the valve 27

2009050784 In this case, it is principally possible to initiate when the current flow through the winding of the electromagnet 57 enclosing the threaded bolt 55 and the closure member 49 by suitable polarity of the current source of the electromagnet 57 leads to a magnetic field whose north pole is adjacent to the closing body 50 of the closure member 49 is arranged, the south pole, however, is arranged on the corresponding opposite side of the electromagnet 57, namely adjacent to the top of the threaded bolt 55th

In contrast, in the constellation according to FIG. 6b, the individual magnets 58, 59 are arranged such that their north poles lie directly opposite one another. An opening movement of the valve 27 can be initiated in this case primarily when the current flow through the electromagnet 57 leads to a magnetic field whose south pole is arranged adjacent to the closing body 50 of the closure member 49. Its north pole, on the other hand, is in this case correspondingly arranged on the opposite side of the electromagnet 57, namely adjacent to the upper side of the threaded bolt 55.

2009050784 LIST OF REFERENCE NUMBERS

10 pack 54 interior

11 Blank 55 Threaded bolt

12 lower box part 56 seal

13 Lid 57 Electromagnet

14 line joint 58 single magnet

15 front wall 59 single magnet

16 bottom wall 60 spacer

17 rear wall 61 interruptions

18 internal side lobes 62 temperature sensor

19 Outer side tabs 63 Measuring head 0 Lid rear wall 64 Cable connection 1 End wall 65 Control / regulation 2 Lid front wall device 3 Lid internal tabs 66 Acceleration sensor 4 Inner lid side tabs 67 Cable connection 5 Outer lid side tabs 68 Carrier 6 Group of glue valves 69 Common glue supply 7 Glue valve 70 Feed pump 8a - - 28b smaller glue points 71 Pressure regulator 9a - ^■ 29f larger glue points 72 Thruster 0 Cutting unit 73 Control line 1 Magazine 74 Arrow Acceleration 2 Abroll wheel 75 Temperature signals 3 Conveyor 76 Machine speed 4 Overhead 77 Machine speed sensor 5 Underpass 78 Pressure signals 6 Roller pair 79 Control curve 7 Roller pair 80 Database 8 Folding turret 81 Machine speed 9 Pocket 82a - 82d Glue drop sizes 0 Adjusting arm 83a - 83c Glue dot pattern 1 Punch 84a - 84b Glue grade 2 Folding wall 85 Viscosity / temperature 3 Shaft Curves 4 Collar 86 accelerated start 5 Valve body movement 6 Glue 87 Acceleration / time 7 Valve opening Diagram 8 Valve seat 88 Opening flow 9 Closing device 89 Current / time diagram 0 Closing body 90 Negatively accelerated end stop 1 Adapter movement 2 Piston piece 91 Holding current 3 Valve chamber

2009050784

Claims

claims

1. A method for producing packages (10), in particular cigarette packs, from blanks (11, 44), wherein individual areas, in particular folding flaps, a package blank (11) with each other and optionally with one or more separate blanks (44) are connected by the package blank (11) and / or the separate blank (44) is provided in regions with individual, spatially separated glue portions (28, 29) by means of one or more glue valves (27) and the blank areas to be glued are subsequently held against one another or pressed against each other, characterized in that the individual, spatially separated from each Leimportionen (28, 29) for bonding the individual blank areas are selectively applied in at least two different portion sizes or glue levels on the respective package blank (11) and / or the respective separate blank (44) ,

2. The method according to claim 1, characterized in that the Packungszu- section (11) in each case in areas of to be glued together folding flaps (18, 19, 24,

25) with individual glue portions (28, 29) is provided, wherein in edge regions of at least one folding flap (19, 25) larger glue portions are applied as in more interior areas of this folding flap (19, 25).

3. The method according to claim 1 or 2, characterized in that for connecting the separate blank (44) with the package blank (11) individual glue portions (29c, 29d) are applied, which are larger than those glue portions (28) in the edge regions at least one folding flap (19, 25) are applied.

4. A method for producing packages, in particular cigarette packs, from blanks (11, 44), wherein individual areas of a package blank (11) with each other and optionally with one or more separate blanks (44) are bonded by the package blank (11) by means of a Valve or a group of valves (26) with individual glue portions (28, 29) is provided and to be bonded

2009050784 Blank areas are then held together or pressed against each other, characterized in that the individual glue portions (28, 29) by means of the glue valve (27) or the group of glue valves (26) are applied to the blank areas, wherein a control and / or regulating device (65) which automatically controls and / or regulates the quantity or amount of the respectively produced glue portion (28, 29) generated by the at least one glue valve (27) during a single valve opening cycle, depending on at least one parameter.

5. The method according to claim 4, characterized in that continuously or at predetermined time intervals, at least one of the glue serving size or Leimportionsmenge influencing measure is measured and that depending on the measurement result, the glue valve (27) is controlled / regulated.

6. The method according to claim 5, characterized in that the viscosity of the glue, at least one of the viscosity of the glue affecting the measured variable and / or at least one influenced by the viscosity of the glue measured variable is measured, in particular the temperature of the glue valve or supplied in the Glue and / or the pressure downstream of a feed pump (70), under which the glue is supplied to the glue valve (27) and / or characteristics, the movements of a within the glue valve (27) in the glue moving closure member (49) of the Mark glue valve (27).

7. The method according to claim 6, characterized in that a closure member (49) of the glue valve (27) between a glue outlet from the valve (27) preventing the closed position and the glue outlet enabling opening position and / or is moved, wherein the time period in which the closing member (49) is in the open position, depending on the measured variable influencing the viscosity or influenced by the glue viscosity and / or controlled.

8. The method according to claim 6 or 7, characterized in that the closure member (49) with a first, larger force - opening force - is applied, which moves the closure member (49) from the closed position to the open position, and that the closure member (49 ) then with a comparison with the first,

2009050784 lower second force - holding force - is applied, which holds the closure member (49) in the open position.

9. The method according to claim 8, characterized in that the period of time, with which the closure member (49) is acted upon by the opening force, depending controlled and / or regulated by the viscosity of the glue and / or dependent on the at least one of the viscosity of Glue influencing measured variable and / or dependent on the at least one of the viscosity of the glue influenced measurement.

10. The method according to claim 9, characterized in that indirectly or directly, in particular by means of a movement of the closure member (49) detecting the acceleration sensor (66), the time period is detected, which requires the closure member (49) to move from the closed position in the Opening position - to be moved - and that the duration of the force of the opening force is adapted to the detected opening time, preferably, in that the time duration of the force substantially corresponds to this opening time.

11. The method according to claim 8, characterized in that one of an electric current of certain strength - opening current - flowing through solenoid (57) which acts on the closure member (49) opening force causes the closure member (49) moves from the closed position to the open position , And that then the electromagnet (57) is flowed through by a low-current electric current - holding current - to cause the holding force acting on the closure member (49).

12. The method according to one or more of claims 4 - 11, characterized in that the control and / or regulating device (65) evaluates the measured values of the measured variable based on data, in particular data curves, in one of the control and / or regulating device ( 65) associated data storage are stored.

13. The method according to one or more of claims 4-12, characterized in that in one of the control and / or regulating device (65) associated data memory (80) with the produced package (10) or with the zu

2009050784 glueing blank (11), and that after selecting a parameter set, the glue valve (27) or the glue valve group (26) is controlled depending on the selected parameter set.

14. Method according to claim 13, characterized in that the parameter set comprises data associated with different glue serving sizes or glue serving amounts, data associated with different cut variants, data associated with different (central) machine speeds and / or data associated with different glue size variants.

15. The method according to claim 14, characterized in that for each cut variant data are stored, which are associated with one or more patterns of applied to the blank glue points.

16. The method according to claim 15, characterized in that for each deposited glue dot pattern data are stored which describe the drop size of each individual glue point of the sample and / or times at which the glue valve or the respective glue valve (27) of the glue valve group (26) opened or closed.

17. The method according to one or more of claims 12-16, characterized in that the control and / or regulating device (65) based on the selected parameter set calculated control parameters for controlling the glue valve and / or that the control and / or regulating device (65 ) reads out control parameters of the glue valve from a memory associated with the control and / or regulating device (65) on the basis of the selected parameter set.

18 valve for flowable media, in particular glue valve (27), with a valve housing (45), an outlet or valve opening (47) and a closure member (49) with closing body (50), with which the valve (27) between an open position and a closed position back and / or forth, characterized in that the valve (27) at least one sensor (62, 66) for measuring the viscosity of the flowable medium and / or for measuring at least one of the viscosity of

2009050784 flowable medium influencing the measured variable and / or for measuring at least one of the viscosity of the flowable medium influenced measurement.

19. A valve according to claim 18, characterized in that the sensor is a temperature sensor (62) with which the temperature of the fluid in the valve is measurable and / or a sensor (66) for detecting at least one characteristic, the movements of a characterized within the flowable medium moving closure member (49) of the valve (27).

20. Valve according to claim 19, characterized in that the valve (27) via an acceleration sensor (66), with the accelerated movements of the closure member (49) within the valve housing (45) of the valve (27) can be detected.

21. Valve according to one or more of the preceding claims 18 - 20, characterized in that the closure member (49) within the valve by

Permanent magnets, namely, two opposite with rectified magnetic poles individual magnets (58, 59) is movable into the closed position, in which the closing body (50) is in sealing contact with a valve seat (48) of the valve (27), and in the open position by a Electromagnet (57) whose winding surrounds the closure member (49) at least in sections, a single magnet (59) being arranged at an end remote from the closing body (50) of the closure member and the other individual magnet (58) being disposed opposite to the valve housing (45 ), and wherein a) at their respective north poles opposite individual magnets (58, 59) of the current flow through the electromagnet (57) is such that its south pole of the closing body (50) is adjacent, the north pole, however, at the corresponding opposite end of Electromagnet (57) is arranged, or b) with their respective south poles opposite individual magnets (58, 59), the current flow through the electromagnet (57) is such that the north pole of the closing body (50) of the closure member (49) is adjacent, the north pole, however, is arranged at the corresponding opposite end of the electromagnet (57).

22. An apparatus for producing blanks from blanks (11, 44), in particular for carrying out the method according to one or more of the preceding claims.

2009050784 1-17, with a conveyor, with the blanks (11) for applying glue to a glue valve (27) or to a plurality of glue valves (27) of a glue valve group (26) are conveyed along and with a control and / or regulating device ( 65) for controlling and / or regulating the glue valve (27) or the glue valve group (26), characterized in that the control and / or regulating device (65) is designed such that the of the at least one glue valve (27) generated size or amount of the respective glue portion (28, 29) is automatically controlled and / or regulated depending on at least one parameter.

23. The device according to claim 22, characterized by one or more features of the preceding claims 1 - 21, in particular by one or more valves of claims 18 - 21.

2009050784