Modular application device, gluing station having a plurality of corresponding application devices, container-forming device and method for additively manufacturing a distribution module for an application device

Abstract

The invention relates to a modular application device (100), in particular a hot-glue head, for applying adhesive to containers (10), in particular beverage containers, preferably cans, bottles or drinks cartons, wherein the modular application device (100) has a central module (110) having a central adhesive supply (111) and at least one distribution module (120) that can be connected to the central module (110), wherein the distribution module (120) is designed to be connectable or connected to an application nozzle (130) and has an adhesive channel (121) for the application nozzle (130) for supplying adhesive to the application nozzle (130), wherein the distribution module (120) is thermally decoupled from the central module (110). The invention also relates to a gluing station (100) having a plurality of corresponding application devices (110), as well as a corresponding container-forming device (1000) and to a method for additively manufacturing a central module (110) and / or a distribution module (120) for an application device (100).

Description

[0001] Modular application device, gluing station with a plurality of corresponding application devices, bundle forming device and method for additive manufacturing of a distribution module for an application device

[0002] Technical area

[0003] The invention relates to an application device, in particular a hot melt head, for applying adhesive to containers, in particular beverage containers, preferably cans, bottles, or beverage cartons. Furthermore, the invention relates to a gluing station with a plurality of corresponding application devices for applying adhesive to containers, in particular beverage containers, preferably cans, bottles, or beverage cartons. Furthermore, the invention relates to a container forming device and a method for the additive manufacturing of a distribution module for a corresponding application device.

[0004] State of the art

[0005] Application devices for applying adhesive, particularly hot melt glue, are generally known. Such application devices, also called application heads or hot melt glue heads, have at least one application nozzle or adhesive nozzle, by means of which the adhesive is dispensed. Such application devices are used, for example, in systems in which containers are provided with spot adhesive applications in order to glue containers together to form a container bundle. Such systems are known, for example, from the publications DE 10 2012 100 810 A1 or DE 10 2011 106 759 B3. Typical application devices have a distribution unit, by means of which supplied adhesive is distributed to the individual application nozzles arranged on the distribution unit. The distribution units are typically manufactured from a solid body using traditional manufacturing methods.

[0006] However, a problem with the known application systems is that when individual nozzles are shut off, adhesive remains in the supply channels to the nozzles. The adhesive remaining in the supply channels reacts to the high prevailing temperatures and begins to carburize. The adhesive hardens and clogs the supply channels.

[0007] When changing the containers from six-packs to four-packs or if adhesive dots are not to be applied to certain areas, it may be necessary to switch off some nozzles.

[0008] It would therefore be desirable to achieve a further development of the known application devices in which the carburization of the adhesive is eliminated or at least minimized, especially when individual nozzles are switched off.

[0009] Description of the invention

[0010] The invention is therefore based on the object of providing an application device for applying adhesive to containers, in particular beverage containers, that eliminates the above-mentioned problems and disadvantages of the prior art. Furthermore, the object of the invention is to provide a gluing station with a plurality of corresponding application devices, a container forming device, and a method for producing a distribution module for a corresponding application device.

[0011] These objects are achieved by the subject matter of the independent claims. Further possible embodiments of the invention are specified in particular in the dependent claims. The solution according to the invention consists in particular in providing a modular application device, in particular a hot melt head, for applying adhesive to containers, in particular beverage containers, preferably cans, bottles, or beverage cartons. The modular application device comprises a central module with a central adhesive inlet and at least one, preferably a plurality of, distribution modules connectable to the central module.

[0012] The modular design of the modular application device means that the modular application device is divided into separate, independent modules that are, in particular, interchangeable. These modules comprise at least the central module and a distribution module. The distribution module is designed to be connectable or connected to an application nozzle and has an adhesive channel for supplying adhesive to the application nozzle.

[0013] According to the invention, the distribution module is thermally decoupled from the central module. Thermally decoupled means that heat transfer between the two elements is separated or at least minimized, in particular so that only a small amount of heat can be transferred from the central module to the distribution module.

[0014] The modular application device is generally designed to apply or apply adhesive to containers, in particular beverage containers, preferably cans, bottles, or beverage cartons. The application nozzles connectable to the modular application device serve to apply adhesive, particularly in a hot and thus liquid or viscous state, to an outer surface of the containers.

[0015] For positioning the application nozzle, the distribution module preferably has a receiving contour. The adhesive channel preferably opens into the corresponding receiving contour. Particularly preferably, the receiving contour is designed to be flat to enable a flat positioning of the application nozzle. This allows for particularly good heat transfer from the heatable distribution module to the application nozzle.

[0016] The receiving contour is preferably designed for the positive positioning of the application nozzle. For example, the receiving contour has a bottom surface and one, preferably two, side surfaces oriented at least substantially perpendicular to the bottom surface for the positive positioning of the application nozzle.

[0017] In general, the mounting contour allows for a particularly secure and stable attachment of the application nozzle, as well as preventing vibrations and movement during operation, thus achieving particularly high precision in adhesive application. The form-fitting arrangement of the application nozzle also ensures particularly good heat transfer between the distribution module and the application nozzle.

[0018] The application device may in particular be a hot melt head which is suitable for use in conjunction with hot melt, in particular at a temperature above 150 °C.

[0019] The term “container” in the sense of the present invention refers to bodies that are one-piece or formed from several parts that are firmly connected to one another. Each container preferably has a hollow space inside and is designed to separate this hollow space from the environment. The containers can be, for example, containers for storing food and / or liquid, viscous, or pasty substances. The containers are particularly preferably beverage containers. In particular, the beverage containers are bottles, cans, or beverage cartons. Adhesive is, in general terms, a process material that is capable of bonding materials by means of adhesion and / or cohesion. In particular, the adhesive is an adhesive that is suitable for bonding cans or bottles together to form a container.Some examples of adhesives that can be used here are mentioned in DE 103 93 236 T5, DE 101 16 022 A1, DE 197 48 978 A1, or DE 692 18 238 T2.

[0020] The adhesive is particularly preferably a hot melt adhesive, which is solid at room temperature and melts and is processable upon heating. The hot melt adhesive is particularly preferably heated to a temperature above 150°C. If the adhesive is to be used to bond cans, a non-foamed or solid hot melt adhesive is preferably used. If the adhesive is to be used to bond bottles, especially PET (polyethylene terephthalate) bottles, a foamed hot melt adhesive is preferably used.

[0021] The foamed hot melt adhesive is preferably foamed with nitrogen. The foam content, or nitrogen content, is preferably 20% to 50%. The adhesive is typically conveyed from a tank to a foaming station, where it is pressurized with nitrogen. The adhesive is then fed to the application nozzles, particularly heated and foamed. In this state, the foamed adhesive has the above-specified foam content of 20% to 50%.

[0022] The central module is fundamentally designed to distribute adhesive to the distribution module(s) connected to the central module or to supply it to the distribution modules. For this purpose, the central module has a central adhesive inlet. Independently of this, the central adhesive inlet is preferably connected or connectable to a tank storing the adhesive or to the foam station. An adhesive connection is used for this purpose. Distribution channels for supplying the adhesive to the distribution modules particularly preferably branch off from the central adhesive channel.

[0023] Regardless, the central module is preferably monolithic, with the central adhesive inlet and preferably the distribution channels integrated into the central module. The adhesive channels are thus formed or delimited by the central module itself.

[0024] The monolithic design results in a particularly high level of robustness and durability of the central module, as there are no multiple interconnected parts. Furthermore, a particularly high level of tightness of the central module and the adhesive channels within the central module is ensured, as there are no joints along the adhesive channels within the central module that need to be sealed.

[0025] The distribution module is fundamentally designed to distribute the adhesive supplied by the central module to the application nozzle attached to the distribution module or to feed it to the application nozzle. For this purpose, the distribution module has the adhesive channel.

[0026] Irrespective of this, the distribution module is preferably monolithic, wherein the adhesive channel is preferably integrated into the distribution module.

[0027] Particularly preferably, at least two, preferably a plurality of, distribution modules are provided, each of which is connectable or connected to a corresponding application nozzle.

[0028] The applicant has determined that when an application nozzle is switched off, for example when changing the container layout from six-packs or six-packs to four-packs, carburization of the adhesive arranged in the supply channels leading to the application nozzle often occurs. This effect occurs even during normal use, i.e., without switching off individual application nozzles for an extended period of time. According to the invention, the application device is therefore designed from several modules, with the modules being thermally decoupled from one another. This makes it possible to switch off an individual application nozzle and also to reduce the temperature in the distribution module assigned to the application nozzle accordingly to such an extent that carburization of the adhesive no longer occurs or is hardly noticeable.

[0029] Thus, the present invention makes it possible to deactivate individual application nozzles without having to fear carburization of the adhesive in the adhesive channels. In particular, containers, especially beverage containers, can be combined in a container forming device to form containers with selectively changeable container sizes. Alternatively or additionally, containers with different container sizes, in particular different circumferences, container side lengths, container depth lengths, and / or container lengths, can be processed.

[0030] Preferably, the central module and / or the distribution module are made of metal, in particular copper, steel, or aluminum. Particularly preferably, the central module and / or the distribution module are made of aluminum, in particular AISiwMg.

[0031] According to an advantageous development of the invention, the distribution module is designed to be connectable to the central module via a connecting element.

[0032] This means that the distribution module is not attached directly to the central module, but indirectly to the central module via the connecting element.

[0033] This makes it easier to thermally decouple the distribution module from the central module.

[0034] The connecting element is another module component of the modular application device. The connecting element serves to connect the distribution module to the central module. Preferably, the connecting element can be designed to be attachable to the distribution module. For example, the connecting element can be designed to be screwed onto the distribution module.

[0035] Irrespective of this, the connecting element is preferably manufactured using a traditional manufacturing process. In particular, the connecting element is preferably manufactured by primary forming, forming, or separating. The connecting element is preferably monolithic.

[0036] The connecting element can preferably be connected to the distribution module and / or the central module in a form-fitting manner. The distribution module and / or the central module can have chamfers to facilitate insertion of the connecting element.

[0037] In an advantageous development of the invention, the connecting element is designed to be heat-insulating. The connecting element thus reduces heat exchange between the central module and the distribution module.

[0038] As a thermally insulating connecting element, the connecting element has a low thermal conductivity. For example, the connecting element consists of a material with a thermal conductivity of less than 2 W / m K, preferably less than 1 W / m K, or at least has this value.

[0039] The connecting element is designed to thermally decouple the distribution module from the central module. This thermal decoupling allows each distribution module to be individually controlled in terms of its temperature, i.e., independently of the central module.

[0040] For example, the connecting element is made of ceramic or a polymer. Particularly preferably, the connecting element is made of polyetheretherketone (PEEK). Then, the connecting element can have a thermal conductivity of 0.23 W / m K. According to an advantageous development of the invention, the connecting element has a plurality of cooling fins.

[0041] The connecting element thus has a structured, particularly rib-like, surface that serves to dissipate heat and cool the connecting element. Generally, the cooling fins are designed to increase the surface area of ​​the connecting element to facilitate heat dissipation to the environment.

[0042] Particularly preferably, the cooling fins are arranged on multiple sides of the connecting element. For example, the cooling fins are arranged on both sides and on the back of the connecting element. Particularly preferably, so many cooling fins are arranged that no heat is transferred from the central module to the distribution module. In other words, the small amount of heat transferred to the connecting element is dissipated to the environment before it reaches the distribution module.

[0043] In an advantageous development of the invention, the connecting element has an adhesive channel. Preferably, the connecting element further has a sealing seat, particularly concentric with the adhesive channel.

[0044] The adhesive channel is fluidically connectable or connected to the central adhesive inlet or a distribution channel thereof and the adhesive channel of the distribution module. In particular, the adhesive channel of the connecting element conducts adhesive from the central adhesive inlet to the adhesive channel of the distribution module. The adhesive is under high pressure in the adhesive channel. For example, the internal pressure during operation can reach a pressure of up to 80 bar. Therefore, a seal, in particular an O-ring, can be used in the sealing seat, which is designed in particular concentrically to the adhesive channel. The O-ring can be, for example, a high-performance O-ring made of perfluoroelastomer (FFKM). According to an advantageous development of the invention, the distribution module has at least one receptacle for receiving a heating element, in particular a heating rod, for in particular separate heating, in particular preheating, of the distribution module.Preferably, the distribution module further comprises a receptacle for receiving a temperature sensor.

[0045] The heating element holder, or rather, the heating element itself, allows the distribution module to be heated separately, i.e., independently of the central module. When the associated application nozzle is switched off, the heating element is also switched off to prevent the adhesive from overheating. The adhesive solidifies in the adhesive channels. When the application nozzle is switched on again, the adhesive must first be liquefied. For this, the distribution module must be heated to a temperature of over 150°C. This is possible using the heating element that can be arranged in the distribution module.

[0046] The heating element is therefore designed to preheat the distribution module. The distribution module can be preheated particularly easily using heating elements. In this case, the distribution module has, in particular, cylindrical receptacles.

[0047] For solid hot melt adhesive, which is used particularly for cans, the holder should be arranged and designed such that the distribution module reaches a temperature of at least 150 °C. For foamed hot melt adhesive, which is used particularly for PET bottles, the holder should be arranged and designed such that the distribution module can be preheated to at least 170 °C.

[0048] Independently of this, the central module preferably also has corresponding receptacles for accommodating heating elements. In particular, the heating of the central module can be improved, for example, by arranging a plurality of heating elements distributed over the central module. Accordingly, the central module then has a plurality of receptacles for accommodating heating elements. In general, preheating can be improved by a monolithic design of the corresponding element, as this enables particularly good heat distribution. Thus, a particularly advantageous design consists in a monolithically designed distribution module or a monolithically designed central module, each with at least one receptacle for accommodating a heating element.

[0049] The temperature sensor is designed to detect the temperature of the distribution module. The temperature sensor can be used to determine whether the distribution unit is sufficiently preheated. It can also be used to limit the temperature of the distribution module. This prevents coking or carburizing of the hot melt due to excessive temperatures, even when an application nozzle is shut off.

[0050] The heating elements and the temperature sensor are preferably connected or connectable to a control unit. Thus, the temperature of the distribution module can be controlled and / or regulated based on the temperature detected by the temperature sensor. For example, the control unit can at least be configured to deactivate or turn off the heating element as soon as a target temperature is detected by the temperature sensor.

[0051] The target temperature can, in particular, be a temperature between 150°C and 200°C. For solid hot melt glue, this is a temperature between 150°C and 180°C, in particular approximately 165°C. For foamed hot melt glue, this is preferably a temperature between 170°C and 200°C, in particular approximately 185°C.

[0052] The cables and / or lines of the heating elements and / or the temperature sensor run, for example, in cable ducts within the distribution module. In an advantageous development of the invention, the distribution module has control channels, in particular compressed air channels, for controlling the application nozzle. Preferably, the distribution module can also have cable ducts for accommodating and guiding cables and / or lines.

[0053] The application nozzle is preferably controlled via pneumatic valves. Accordingly, the control channels are preferably designed as compressed air channels. The application nozzles can be controlled at a sufficiently high frequency using compressed air. The distribution module preferably has two control channels, in particular compressed air channels for the application nozzle. The opening stroke of the application nozzle is controlled via one of the two control channels, and the closing stroke of the application nozzle is controlled via the other of the two control channels. Alternatively, it would also be conceivable for the application nozzle to be spring-returned, so that one control channel is sufficient. Furthermore, it would generally be conceivable for the control channels to be electronic control channels or hydraulic control channels. Overall, the control channels enable precise control of the application nozzle.

[0054] A cable is, in particular, a single- or multi-core combination of electrical conductors. A cable is, in particular, a conductor sheathed with insulating material.

[0055] The cable ducts enable the transmission of power or information into, out of, or within the distribution module. Furthermore, cables arranged within the distribution module allow for particularly clean and orderly routing of cables and lines. This also protects the cables and lines from damage or interference.

[0056] According to an advantageous development of the invention, the distribution module is attachable or detachably attached to the central module, in particular via the associated connecting element, by means of a tension lock, in particular a toggle lever. The tension lock allows the distribution module to be easily attached to the central module. For example, the tension lock has a hook and a bracket that can be engaged with the hook. The bracket can be tensioned via a lever or the like. In particular, the tension lock is a lever tension lock, in which the tensioning is achieved by means of a lever.

[0057] For example, the hook is formed on the connecting element and the bracket is arranged on the central module.

[0058] In general, the clamp lock is a mechanism designed to clamp the distribution module to the central module.

[0059] Irrespective of this, the tension lock preferably has a tension force of more than 1000 Newtons, preferably more than 1500 Newtons, particularly preferably up to 1600 Newtons.

[0060] In an advantageous further development of this embodiment, the tension lock has an adjusting device, in particular a nut, for adjusting the contact pressure on the central module.

[0061] In particular, the adjustment device is designed to change the length of the bracket. Thus, by shortening the length of the bracket, the contact pressure, i.e., the clamping force, can be increased.

[0062] According to an advantageous development of the invention, the tension lock has a locking device for locking a tensioned position of the tension lock.

[0063] In the tensioned position, the clamp lock clamps the distribution module and the central module. The distribution module or connecting element is then pressed firmly against the central module. The locking mechanism is a safety feature of the clamp lock that prevents accidental opening of the clamp lock.

[0064] For example, the locking device can be designed as a spring-loaded locking arm that engages with a counter-element when the tension lock is in the tensioned position. The locking device or locking arm can be released by means of a release mechanism, for example, by counteracting the spring force. After releasing the locking device, the tension lock can be moved back from the tensioned position to a relaxed position. In this process, the distribution module can be separated from the central module.

[0065] The clamp closure makes it easy to replace the distribution modules.

[0066] In general, the clamp fastener represents an independently inventive aspect. Thus, the clamp fastener and the associated aspects can be used independently of the thermal decoupling of the distribution module from the central module. The clamp fastener is particularly suitable whenever a first component is to be detachably connected to a second component. The clamp fastener is particularly suitable when a high contact pressure, for example, at least 1000 Newtons, is required.

[0067] The independent inventive subject matter then relates to a tension lock which is designed to clamp a first element to a second element.

[0068] The first element can be, for example, the connecting element or the distribution module. The second element can be, for example, the central module. If these elements are involved, all aspects and properties related to the elements also apply here. In an advantageous development of the invention, a thermal insulation housing is arranged on the distribution module, which is designed to reduce the passage of thermal energy to the distribution module.

[0069] The thermally insulated housing is designed to shield the distribution module from ambient temperatures. This serves, on the one hand, to prevent thermal energy from being dissipated too quickly from the distribution modules. On the other hand, it prevents surrounding modules, such as the central module, from overheating the distribution module. The thermally insulated housing is preferably designed such that an air gap between the thermally insulated housing and the distribution module acts as a thermal barrier. More precisely, the stagnant air layer enclosed between the thermally insulated housing and the distribution module acts as insulation, similar to a double-glazed window. For example, the thermally insulated housing can be made of a polymer, in particular polyamide 66 (PA66).Preferably, the thermal insulation housing can be formed from several housing parts, for example two housing parts, which can be engaged with one another via a click or snap connection.

[0070] In an advantageous development of the invention, the central module and / or the distribution module are manufactured additively, in particular both the central module and the distribution module are manufactured additively.

[0071] Additive manufacturing allows for a free design of the contours and, in particular, of the channels located in the distribution module or the central module. In particular, in an additively manufactured module, channels with curvatures, in particular with different curvature angles of more than 90° or less than 90°, can be formed. This allows the channels to be adapted to optimize the flow properties of the adhesive. More generally, in an additively manufactured module, the curvatures of the channels, in particular the adhesive channels, can be freely designed. Furthermore, the task is solved by means of a gluing station with a plurality of the previously described application devices for applying adhesive to containers, in particular beverage containers, preferably cans, bottles, or beverage cartons.Since the application devices are the ones described above, all individual aspects and advantages can also be transferred to the gluing station.

[0072] Particularly preferably, the gluing station comprises two application devices arranged one above the other. The application devices are arranged one above the other in such a way that they can apply adhesive to the same containers, in particular beverage containers, preferably cans, bottles, or beverage cartons.

[0073] Furthermore, the object is achieved by means of a bundle forming device for grouping containers, in particular beverage containers, in particular cans, bottles, or beverage cartons. The bundle forming device has at least one gluing star wheel for applying glue to the containers and a binding station for grouping the containers into bundles.

[0074] The container forming device preferably has an orientation star for aligning the containers, particularly in front of the gluing star. Furthermore, the container forming device preferably has a transfer star for transferring the containers from the gluing star to the binding station.

[0075] The gluing star has at least one of the previously described application devices or one of the previously described gluing stations.

[0076] The bundle forming device is preferably designed to form two-row bundles. In particular, the bundle forming device then has two opposing gluing star wheels and preferably two opposing orientation star wheels, as well as preferably two opposing transfer star wheels. The bundle forming device is preferably designed for varying bundle sizes and / or for varying container sizes. In other words, the bundle forming device is particularly designed to form bundles with varying bundle sizes and / or to combine containers, in particular beverage containers, preferably cans, bottles, or beverage cartons, with varying container sizes into bundles.

[0077] In particular, the use of the application devices described above enables a simple and straightforward change of container sizes. For example, changing from four-packs to six-packs is possible. For this purpose, the application nozzles assigned to the application devices can be selectively switched on or off depending on the desired container size.

[0078] Additionally or alternatively, it is also possible to process containers of different sizes, in particular with container sizes that vary from container to container, in the container forming device and to combine them into containers. The container size refers to at least one characteristic dimension of the container, for example, in the case of cans or bottles, a circumference and / or a container length, or in the case of beverage cartons, a container side length and / or a container depth and / or a container length.

[0079] Since the at least one application device is one of the application devices described above, its individual aspects and advantages can also be transferred to the container forming device.

[0080] Furthermore, the object is achieved by means of a method for the additive manufacturing of a central module and / or a distribution module for an application device, in particular for a hot melt head, for applying adhesive to containers, in particular beverage containers, preferably cans, bottles, or beverage cartons. The method comprises the following step: producing the central module and / or the distribution module with an integrated adhesive channel from a plurality of individual layers joined to one another, wherein the individual layers are designed and joined to one another in such a way that the adhesive channel is formed with windings.

[0081] In the case of the central module, the integrated adhesive channel is the central adhesive inlet and preferably the distribution channel(s). The distribution module is the adhesive channel for supplying adhesive to the application nozzle.

[0082] Preferably, the application device is one of the application devices described above, the individual aspects and advantages of which can also be transferred to the method.

[0083] In general, the individual layers can be joined together using many layers of two-dimensional planes, or concentrically around a center point or a rotation axis.

[0084] The central module or the distribution module can be manufactured additively using a computer-implemented process.

[0085] The computer-implemented process includes the additive manufacturing process described above.

[0086] Furthermore, a computer-readable medium is specified which comprises instructions which, when executed on a 3D printer, cause the 3D printer to carry out the method steps of the computer-implemented method and thus of the method for additive manufacturing.

[0087] Particularly preferably, the application device can be used in conjunction with a container forming device. Individual containers can be fixed together using an adhesive to form the containers. In particular, the containers can be provided with adhesive points by the application device and later pressed together in a binding station, thus securing them together.

[0088] Short description of the drawings

[0089] The various and exemplary features described above can be combined with one another according to the invention, provided this is technically reasonable and suitable. Further features, advantages, and embodiments of the invention will become apparent from the following description and from the figures.

[0090] The figures used to explain the embodiments show:

[0091] Fig. 1 is a schematic representation of a bundle forming device with a gluing station according to the present invention;

[0092] Fig. 2 is a schematic diagram of an application device according to the invention, as it can be used in the gluing station shown in Fig. 1;

[0093] Fig. 3 is a perspective view of an application device according to the present invention;

[0094] Fig. 4 is a perspective view of a distribution module as it can be used in the application device shown in Fig. 3;

[0095] Fig. 5 is a perspective view of a connecting element as it can be used in the application device shown in Fig. 3; and

[0096] Fig. 6 is a perspective view of a clamp closure as it can be used in the application device shown in Fig. 3. Ways of implementing the invention

[0097] Fig. 1 shows a schematic representation of a bundle forming device 1000. The bundle forming device 1000 serves to group containers 10 and to structurally combine them into bundles.

[0098] In this case, the containers 10 are first aligned in an orientation star 400 so that the labels or the front sides of the containers 10 are correctly positioned, in particular visible, in the bundled state.

[0099] From the orientation star wheel 400, the containers 10 are transferred to a gluing star wheel 500, where the containers 10 are provided with adhesive, in particular, sprayed with it. For this purpose, gluing stations 200 are arranged on the gluing star wheel 500. The gluing stations 200 can comprise at least one of the modular application devices 100 shown in Fig. 3.

[0100] The containers 10 are then transferred from the gluing starwheel 500 via a transfer starwheel 600 to a binding station 300. In the binding station 300, the containers 10 provided with glue points are grouped and pressed together to form corresponding bundles. Typically, the bundles consist of three containers 10 arranged in two rows and form so-called six-packs. As can be seen in Fig. 1, the bundle forming device 1000 is formed from two mirror-symmetrically opposed systems. Of course, other two-row bundles, in particular up to 12-packs, are also possible.

[0101] Fig. 2 shows a schematic diagram of a modular application device 100.

[0102] The modular application device 100 has a central module 110. A central adhesive inlet 111 is arranged in the central module 110. The central adhesive inlet 111 has an adhesive inlet 113 for supplying adhesive. Furthermore, the central adhesive inlet 111 has an adhesive outlet 114 for returning the adhesive. Such a circuit structure is used in particular with solid hot melt adhesive, which is particularly suitable for forming cans. Alternatively, it would also be conceivable for the central adhesive inlet 111 not to have an adhesive outlet 114. Such a disposable structure is used in particular with foamed hot melt adhesive, which is particularly suitable for forming PET bottles.

[0103] Several distribution channels 112 extend downwards from the central adhesive inlet 111.

[0104] The modular application device 100 shown in Fig. 1 has a plurality of distribution modules 120. The distribution modules 120 are each connected to the central module 110 via a connecting element 150, which is also part of the modular application device 100. In particular, Fig. 2 shows three distribution modules 120, which can be connected to corresponding application nozzles, as described later in Fig. 3.

[0105] The connecting elements 150 each have an adhesive channel 151. Likewise, the distribution modules 120 each have an adhesive channel 121. Thus, adhesive can be supplied from the adhesive inlet 113 via the central adhesive inlet 111 and the respective distribution channel 112, through the adhesive channel 151 of the corresponding connecting element 150, and through the adhesive channel 121 of the corresponding distribution module 120 to the respective application nozzle 130.

[0106] The connecting element 150 is designed to be thermally insulating. The connecting element 150 is preferably made of a material with a thermal conductivity of less than 2 W / m K, preferably less than 1 W / m K. Thus, the connecting element 150 is suitable for thermally decoupling the distribution modules 120 from the central module 110.

[0107] Fig. 3 shows a more detailed perspective view of a modular application device 100 according to the present invention. The distribution modules 120 shown in Fig. 3 are enclosed by a thermally insulating housing 160, which prevents a clear view of the distribution modules 120.

[0108] As can be seen in Fig. 3, the thermal insulation housing 160 surrounds the corresponding distribution module 120 at least substantially completely, i.e., completely. In particular, only an area for connection to the connecting element 150, here an upper area, and an area for the application nozzle 130, here a front area, are left out. The application nozzle 130 itself is not visible in Fig. 3, but is located in the cover, to which the arrow with the reference number 130 points.

[0109] The thermal insulation housing 160 serves to shield the corresponding distribution module 120 from the ambient heat.

[0110] As can be seen in Fig. 3, the distribution modules 120 are attached to the central module 110 by means of clamp fasteners 180. The function of the clamp fastener 180 will be explained in more detail later with reference to Fig. 6.

[0111] In particular, the connecting elements 150, which are connected to the distribution modules 120, are clamped to the central module 110.

[0112] Fig. 4 shows a more detailed view of the distribution module 120 used in Fig. 3. In particular, an interior of the distribution module 120 is also shown.

[0113] The distribution module 120 is at least substantially shoe-shaped. At a front end of the distribution module 120, there is a receiving contour 124 for receiving an application nozzle 130. The application nozzle 130 can be arranged in a form-fitting manner in the receiving contour 124. In particular, the application nozzle 130 is fastened via fastening elements in fastening holes 125. For easier fastening, the distribution module 120 has a mounting slot 126 through which a fastening tool can be inserted. The adhesive channel 121 for supplying adhesive to the application nozzle 130 ends in the receiving contour 124.

[0114] In addition to the adhesive channel 121, two control channels 127 are also arranged in the distribution module 120. The control channels 127 are designed in particular as compressed air channels and serve to effect an opening or closing stroke of the application nozzle 130.

[0115] Furthermore, the distribution module 120 has a receptacle 122 for receiving a heating element 140. The heating element 140 can separately heat the distribution module 120, in particular preheat it. The receptacle 122 for receiving the heating element 140 extends at least substantially in the longitudinal direction of the distribution module 120. Furthermore, the distribution module 120 has a receptacle 123 for receiving a temperature sensor. The receptacle 123 for receiving the temperature sensor also extends in the longitudinal direction of the distribution module 120. Furthermore, cable ducts for receiving and guiding cables and / or lines can be formed in the distribution module 120.

[0116] The distribution module 120 further comprises a receiving contour 128 for receiving the connecting part 150, in particular in a form-fitting manner. The receiving contour 128 is formed in particular on an upper region of the distribution module 120 and serves to receive a lower region of the connecting element 150. Furthermore, fastening bores 129 for fastening the connecting element 150 are preferably formed in or on the receiving contour 128.

[0117] Fig. 5 shows a detailed perspective view of a connecting element 150, such as can be used in the modular application device 100 in Fig. 3.

[0118] The connecting element 150 has the adhesive channel 151, which here, for example, is arranged in a central region of the connecting element 150. Concentric with the adhesive channel 151, a sealing seat 153 is formed, which serves to accommodate a seal 170, in particular an O-ring. The seal 170 seals the connection point of the adhesive channel 151 and the distribution channel 112 to the outside.

[0119] The connecting element 150 further includes a plurality of mounting holes 156. When mounted on the distribution module 120, the mounting holes 156 are aligned with the mounting holes 129 in the distribution module 120. The counterbore of the holes 156 is milled particularly deep, so that the distance between the central module 110 and the screws arranged in the mounting holes 156 is large to minimize heat conduction from the screws.

[0120] In addition, the connecting element 150 has a plurality of cooling fins 152 for dissipating heat from the connecting element 150. Although not visible in Fig. 5, the cooling fins 152 are also formed on the opposite side and on the rear side.

[0121] The connecting element 150 is at least substantially cuboid-shaped, with a hook 154 extending from the connecting element 150 on one side and protruding elements 155 extending on the opposite sides. The protruding elements 155 can be inserted into a complementary counterpart on the central module 110. A rounded geometry of the protruding elements 155 on the rear of the connecting element 150 is positioned in the complementary counterpart on the central module 110. The connecting element 150 can then be pivoted upward and the hook 154 can be tensioned upward by means of the tension lock 180, as shown in Fig. 3. The front of the connecting element 150 is held upward by the hook 154 and the rear of the connecting element 150 is held upward by the contact of the protruding elements 155 with the complementary counterpart of the central module 110. In Fig.Figure 6 shows an enlarged view of the tension lock 180. The tension lock 180 has a bracket 181. The bracket 181 is designed to grip the hook 154 of the connecting element 150. This allows the hook 154 and thus the connecting element 150 to be tensioned upward, i.e., in the direction of the central module 110.

[0122] The tension lock 180 itself is attached to the central module 110. Here, the tension lock 180 is attached to the central module 110 via a plate 186.

[0123] The plate 186 has downwardly projecting portions 187, i.e., in the direction of the connecting elements 150. The projecting portions 187 hold the connecting elements 150, as can be seen, for example, in Fig. 3, by forming a stop for the connecting elements 150.

[0124] The bracket 181 can be tensioned via a tensioning lever 184. The bracket

[0125] 181 is moved upwards by pushing the clamping lever 184 upwards.

[0126] Fig. 6 shows the tension lock 180 in its tensioned position. A locking device 183 is designed to hold the tension lock 180 or the tension lever 184 in its tensioned position. The locking device 183 can be released via a release mechanism 185, so that the tension lever 184 can be released, i.e., moved downward.

[0127] Furthermore, the clamping closure 180 has an adjusting device 182 which is designed to adjust the clamping force and thus the contact force of the connecting element 150 against the central module 110. Here, the adjusting device

[0128] 182 is designed as a nut 182a, whereby the length of the bracket 181 can be changed by means of the nut 182a.

[0129] Overall, the present invention achieves a modular application device in which the individual distribution modules can be quickly exchanged and individually controlled with regard to their temperature. It is understood that in the present invention, there is a connection between, on the one hand, features described in connection with method steps and, on the other hand, features described in connection with corresponding devices. Thus, the method features described are also to be regarded as device features belonging to the invention—and vice versa—even if this was not explicitly mentioned.

[0130] It should be noted that the features of the invention described with reference to individual embodiments or variants, such as the type and design of the individual components as well as their precise dimensions and spatial arrangement, may also be present in other embodiments, unless otherwise stated or prohibited for technical reasons. Furthermore, not all features of such features of individual embodiments described in combination necessarily have to be realized in a given embodiment.

[0131] Reference symbol

[0132] 10 containers

[0133] 100 Application facility

[0134] 110 central module

[0135] 111 central adhesive feed

[0136] 112 distribution channels

[0137] 113 Adhesive inlet

[0138] 114 Adhesive outlet

[0139] 120 distribution modules

[0140] 121 Adhesive channel

[0141] 122 Holder (for heating element)

[0142] 123 Holder (for temperature sensor)

[0143] 124 Recording contour

[0144] 125 mounting holes

[0145] 126 mounting slot

[0146] 127 control channels

[0147] 128 Recording contour

[0148] 129 mounting holes

[0149] 130 application nozzle

[0150] 140 heating element

[0151] 150 fasteners

[0152] 151 Adhesive channel

[0153] 152 cooling fins

[0154] 153 Seal seat

[0155] 154 hooks

[0156] 155 protruding elements

[0157] 156 mounting holes

[0158] 160 thermal insulation housings

[0159] 170 Seal

[0160] 180 Toggle fasteners 181 Brackets

[0161] 182 Adjustment device

[0162] 183 Mealing device

[0163] 184 Clamping lever 185 Release mechanism

[0164] 186 plate

[0165] 187 above areas

[0166] 200 gluing stations

[0167] 300 binding station 400 orientation star

[0168] 500 gluing stars

[0169] 600 transfer star

[0170] 1000 bundle forming device

Claims

Patent claims 1. Modular application device (100), in particular a hot melt head, for applying adhesive to containers (10), in particular beverage containers, preferably cans, bottles or beverage cartons, wherein the modular application device (100) has a central module (110) with a central adhesive inlet (111) and at least one distribution module (120) connectable to the central module (110), wherein the distribution module (120) is designed to be connectable or connected to an application nozzle (130) and has an adhesive channel (121) for the application nozzle (130) for supplying adhesive to the application nozzle (130), wherein the distribution module (120) is thermally decoupled from the central module (110).

2. Modular application device (100) according to claim 1, characterized in that the modular application device (100) has a plurality of distribution modules (120) connectable to the central module (110).

3. Modular application device (100) according to claim 1 or 2, characterized in that the distribution module (120) can be connected to the central module (110) via a connecting element (150).

4. Modular application device (100) according to claim 3, characterized in that the connecting element (150) is designed to be heat-insulating.

5. Modular application device (100) according to claim 4, characterized in that the connecting element (150) is made of a material with a thermal conductivity of less than 2 W / m K, preferably less than 1 W / m K.

6. Modular application device (100) according to one of claims 3 to 5, characterized in that the connecting element (150) has a plurality of cooling fins (152).

7. Modular application device (110) according to one of claims 3 to 6, characterized in that the connecting element (150) has an adhesive channel (151) and preferably has a sealing seat (153), in particular concentric with the adhesive channel (151).

8. Modular application device (100) according to one of the preceding claims, characterized in that the distribution module (120) has at least one receptacle (122) for receiving a heating element (140), in particular a heating rod, for separate heating, in particular preheating, of the distribution module (120).

9. Modular application device (110) according to one of the preceding claims, characterized in that the distribution module (120) has control channels (127), in particular compressed air channels, for controlling the application nozzle (130) and / or has cable channels for receiving and guiding cables and / or lines.

10. Modular application device (100) according to one of the preceding claims, characterized in that the distribution module (120), in particular via the associated connecting element (150), can be fastened to the central module (110) by means of a clamping closure (180).

11. Modular application device (100) according to claim 10, characterized in that the clamping closure (180) has an adjusting device (182), in particular a nut (182a), for adjusting the contact pressure on the central module (110).

12. Modular application device (100) according to claim 10 or 11, characterized in that the tension lock (180) has a locking device (183) for locking a tensioned position of the tension lock (180).

13. Modular application device (110) according to one of the preceding claims, characterized in that a thermal insulation housing (160) is arranged on the distribution module (120), which is designed to reduce the passage of thermal energy to the distribution module (120).

14. Modular application device (110) according to one of the preceding claims, characterized in that the central module (110) and / or the distribution module (120), preferably both the central module (110) and the distribution module (120), are manufactured additively.

15. Gluing station (200) with a plurality of modular application devices (110) for applying adhesive to containers (10), in particular beverage containers, preferably cans, bottles or beverage cartons, according to one of the preceding claims.

16. A bundle forming device (1000) for grouping containers (10), in particular beverage containers, preferably cans, bottles or beverage cartons, with at least one gluing star (500) for gluing the containers (10), in particular two mutually opposite gluing stars (500), and a binding station (300) for grouping the containers (10) into bundles, wherein the gluing star (500) has at least one application device (110) according to one of claims 1 to 14 or a gluing station (200) according to claim 15.

17. Bundle forming device (1000) according to claim 16, characterized in that the bundle forming device (1000) is designed to form bundles with varying bundle sizes and / or to assemble containers (10), in particular beverage containers, preferably cans, bottles or beverage cartons, with varying container sizes into bundles.

18. A method for additively manufacturing a central module (110) and / or a distribution module (120), in particular for additively manufacturing both a central module (110) and a distribution module (120), for an application device (100), in particular for a hot melt head, for applying adhesive to containers (10) according to one of claims 1 to 14, wherein the method comprises the following step: Producing the central module (110) and / or the distribution module (120), in particular both the central module (110) and the distribution module (120), with an integrated adhesive channel (111, 121) from a plurality of individual layers joined to one another, wherein the individual layers are designed and joined to one another in such a way that the adhesive channel (111, 121) is formed as a winding by means of curvatures.

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