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

Abstract

The invention relates to a modular application device (100), in particular a hot melt head, for applying adhesive to containers (10), in particular cans or bottles, 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). Furthermore, the invention relates to a gluing station (100) with a plurality of corresponding application devices (110) and a method for the additive manufacturing of a central module (110) and / or a distribution module (120) for an application device (100).

Description

Technical area

[0001] The invention relates to an application device, in particular a hot melt head, for applying adhesive to containers, in particular cans or bottles. Furthermore, the invention relates to a gluing station with a plurality of corresponding application devices for applying adhesive to containers. Furthermore, the invention relates to a method for the additive manufacturing of a distribution module for a corresponding application device. State of the art

[0002] 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 bond containers together to form a container package. Such systems are known, for example, from the publications DE 10 2012 100 810 A1 or DE 10 2011 106 759 B3.

[0003] Typical application devices feature a distribution unit that distributes the supplied adhesive to the individual application nozzles arranged on the distribution unit. The distribution units are typically manufactured from a solid body using traditional manufacturing methods.

[0004] 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.

[0005] When changing the containers from six-packs to four-packs or if no adhesive dots are to be applied to certain places, it may be necessary to switch off some nozzles.

[0006] 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. Description of the invention

[0007] The invention is therefore based on the object of providing an application device for applying adhesive to containers that eliminates the above-mentioned problems and disadvantages of the prior art. Furthermore, it is the object of the invention to provide a gluing station with a plurality of corresponding application devices and a method for producing a distribution module for a corresponding application device.

[0008] 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.

[0009] 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 cans or bottles. 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.

[0010] 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. The 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.

[0011] 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.

[0012] The modular application device is generally designed to apply or apply adhesive to containers, in particular cans or bottles. The application nozzles that can be connected 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 container.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] For the purposes of the present invention, the term "container" refers to bodies that are one-piece or formed from several firmly connected parts. Each container preferably has a hollow space inside and is designed to separate this hollow space from the surroundings. The containers can be, for example, containers for storing food and / or liquid, viscous, or pasty substances. The containers are particularly preferably bottles or cans.

[0018] In general, an adhesive is a process material capable of bonding materials together through adhesion and / or cohesion. In particular, it is an adhesive suitable for bonding cans or bottles together to form a container. Some examples of adhesives that can be used in this context are listed in DE 103 93 236 T5, DE 101 16 022 A1, DE 197 48 978 A1, and DE 692 18 238 T2.

[0019] 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, particularly PT (polyethylene terephthalate) bottles, a foamed hot melt adhesive is preferably used.

[0020] The foamed hot melt adhesive is preferably foamed with nitrogen. The foam content, or the 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%.

[0021] 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 the 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.

[0022] Regardless, the central module is preferably monolithic, with the central adhesive inlet and preferably the distribution channels being integrated into the central module. The adhesive channels are thus formed or delimited by the central module itself.

[0023] 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 require sealing.

[0024] 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.

[0025] Irrespective of this, the distribution module is preferably monolithic, wherein the adhesive channel is preferably integrated into the distribution module.

[0026] 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.

[0027] The applicant has determined that when an application nozzle is switched off, for example, when changing the packaging layout from six-packs or six-packs to four-packs, carburization of the adhesive 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 over an extended period of time.

[0028] 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 shut down an individual application nozzle and also reduce the temperature in the distribution module associated with the application nozzle to such an extent that carburization of the adhesive no longer occurs or is minimal.

[0029] Thus, by means of the present invention, it is possible to switch off individual application nozzles without having to fear carburization of the adhesive in the adhesive channels.

[0030] Preferably, the central module and / or the distribution module is made of metal, in particular copper, steel, or aluminum. Particularly preferably, the central module and / or the distribution module is made of aluminum, in particular AlSi. 10 Mg trained.

[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 thus 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 the 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 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 inserted into 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).

[0045] 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 separately heating, in particular preheating, the distribution module. Preferably, the distribution module further has a receptacle for receiving a temperature sensor.

[0046] 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.

[0047] 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, cylindrically shaped receptacles.

[0048] For solid hot melt adhesive, which is used particularly for gluing 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 gluing PET bottles, the holder should be arranged and designed such that the distribution module can be preheated to at least 170 °C.

[0049] 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 there, 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, since 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.

[0050] 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.

[0051] 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.

[0052] The target temperature can, in particular, be a temperature between 150°C and 200°C. In particular, 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.

[0053] The cables and / or lines of the heating elements and / or the temperature sensor run, for example, in cable ducts within the distribution module.

[0054] 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 channels for receiving and guiding cables and / or lines.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] According to an advantageous development of the invention, the distribution module can be fastened to the central module, in particular via the associated connecting element, by means of a clamping lock, in particular a toggle lever.

[0059] 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 using a lever or similar device. In particular, the tension lock is a lever tension lock, in which tensioning is achieved using a lever.

[0060] For example, the hook is formed on the connecting element and the bracket is arranged on the central module.

[0061] In general, the clamp lock is a mechanism designed to clamp the distribution module to the central module.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] According to an advantageous development of the invention, the tension lock has a locking device for locking a tensioned position of the tension lock.

[0066] In the tensioned position, the clamp clamps the distribution module and the central module. The distribution module or connecting element is then pressed against the central module with force.

[0067] The locking device is a safety device of the tension lock that prevents the tension lock from opening accidentally.

[0068] 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 the locking device is released, the tension lock can be moved back from the tensioned position to a relaxed position. In this case, the distribution module can be separated from the central module.

[0069] The clamp lock makes it easy to replace the distribution modules.

[0070] In general, the clamp closure represents an independently inventive aspect. Thus, the clamp closure and the associated aspects can be used independently of the thermal decoupling of the distribution module from the central module. The clamp closure is particularly applicable whenever a first component is to be detachably connected to a second component. The clamp closure is particularly suitable when a high contact pressure, for example, at least 1000 Newtons, is required.

[0071] The independent inventive subject matter then relates to a tension lock which is designed to clamp a first element to a second element.

[0072] The first element could be, for example, the connecting element or the distribution module. The second element could be, for example, the central module. If these elements are involved, all aspects and properties related to the elements also apply here.

[0073] 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.

[0074] The thermal insulation housing is designed to shield the distribution module from ambient temperatures. On the one hand, this prevents heat 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 thermal insulation housing is preferably designed such that an air gap between the thermal insulation housing and the distribution module acts as a thermal barrier. More precisely, the stagnant air layer enclosed between the thermal insulation housing and the distribution module acts as insulation, similar to a double-glazed window. For example, the thermal insulation 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.

[0075] In an advantageous development of the invention, the central module and / or the distribution module are manufactured additively.

[0076] Additive manufacturing allows for a free design of the contours, particularly of the channels located in the distribution module or the central module. In particular, channels with curvatures, especially with different curvature angles of more than 90° or less than 90°, can be formed in an additively manufactured module. This allows the channels to be adapted to optimize the flow properties of the adhesive. More generally, the curvatures of the channels, especially the adhesive channels, can be freely designed in an additively manufactured module.

[0077] Furthermore, the problem is solved by means of a gluing station with a plurality of the previously described application devices for applying adhesive to containers, in particular cans or bottles. Since the application devices are the same as those described above, all individual aspects and advantages can also be transferred to the gluing station.

[0078] 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 cans or bottles.

[0079] 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 cans or bottles. 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 in a twisted manner by means of curvatures.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] The central module or the distribution module can be manufactured additively using a computer-implemented process.

[0084] The computer-implemented process includes the additive manufacturing process described above.

[0085] 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.

[0086] Particularly preferably, the application device can be used in conjunction with a container forming device.

[0087] Individual containers can be bonded together using an adhesive to form the bundles. In particular, the containers can be provided with adhesive joints by the application device and later pressed together in a bonding station, thus securing them together. Short description of the drawings

[0088] 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.

[0089] The figures used to explain the embodiments show: Fig. 1 is a schematic representation of a bundle forming device with a gluing station according to the present invention; Fig. 2 a schematic diagram of an application device according to the invention, as shown in Fig. 1 shown gluing station; Fig. 3 a perspective view of an application device according to the present invention; Fig. 4 a perspective view of a distribution module as shown in Fig. 3 shown application device; Fig. 5 a perspective view of a connecting element as shown in Fig. 3 shown application device; and Fig. 6 a perspective view of a tension lock as used in the Fig. 3 can be used with the application device shown. Ways to implement the invention

[0090] Fig. 1 schematically shows a bundle forming device 1000. The bundle forming device 1000 serves to group containers 10 and structurally combine them into bundles.

[0091] 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.

[0092] From the orientation star 400, the containers 10 are transferred to a gluing star 500, where the containers 10 are provided with adhesive, in particular shot at. For this purpose, gluing stations 200 are arranged on the gluing star 500. The gluing stations 200 can have at least one of the Fig. 3 have the modular application devices 100 shown.

[0093] 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 shown in Fig. As can be seen in Figure 1, the pack forming device 1000 is constructed from two mirror-symmetrically opposed systems. Of course, other two-row packs, especially up to 12-packs, are also possible.

[0094] Fig. 2 shows a schematic diagram of a modular application device 100.

[0095] 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 for 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 for foamed hot melt adhesive, which is particularly suitable for forming PET bottles.

[0096] Several distribution channels 112 extend downwards from the central adhesive inlet 111.

[0097] The Fig. The modular application device 100 shown in Figure 1 comprises 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, as later in Fig. 3, can be connected to corresponding application nozzles.

[0098] 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.

[0099] 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.

[0100] In Fig. 3 shows a more detailed perspective view of a modular application device 100 according to the present invention.

[0101] The Fig. 3 are surrounded by a thermal insulation housing 160 which prevents a clear view of the distribution modules 120.

[0102] As in Fig. As can be seen in Figure 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 recessed.

[0103] The application nozzle 130 itself is in Fig. 3, but is located in the cover to which the arrow with the reference number 130 points.

[0104] The thermal insulation housing 160 serves to shield the corresponding distribution module 120 from the ambient heat.

[0105] As 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 later with reference to Fig. 6 explained in more detail.

[0106] In particular, the connecting elements 150, which are connected to the distribution modules 120, are clamped to the central module 110.

[0107] In Fig. 4 is a more detailed view of the Fig. 3 used distribution module 120 is specified. In particular, an interior of the distribution module 120 is also shown.

[0108] The distribution module 120 is at least substantially shoe-shaped. A receiving contour 124 for receiving an application nozzle 130 is located at a front end of the distribution module 120. 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.

[0109] The adhesive channel 121 for supplying adhesive to the application nozzle 130 ends in the receiving contour 124.

[0110] 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.

[0111] 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 routing cables and / or lines can be formed in the distribution module 120.

[0112] The distribution module 120 further comprises a receiving contour 128 for, in particular, positively receiving the connecting part 150. 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.

[0113] In Fig. 5 is a detailed perspective view of a connecting element 150, as used, for example, in the modular application device 100 in Fig. 3 can be used.

[0114] The connecting element 150 has the adhesive channel 151, which here is arranged, for example, in a central region of the connecting element 150. Concentric with the adhesive channel 151 is a sealing seat 153, 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.

[0115] 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.

[0116] In addition, the connecting element 150 has a plurality of cooling fins 152 to dissipate heat from the connecting element 150. Although this is Fig. 5, the cooling fins 152 are also formed on the opposite side and on the rear side.

[0117] 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. In this case, a rounded geometry of the protruding elements 155 on the rear side of the connecting element 150 is positioned in the complementary counterpart on the central module 110. The connecting element 150 can then be pivoted upwards and the hook 154 can be inserted as shown in Fig. 3, by means of the tension lock 180. The front side of the connecting element 150 is held upward by the hook 154, and the rear side of the connecting element 150 is held upward by the contact of the projecting elements 155 with the complementary counterpart of the central module 110.

[0118] 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.

[0119] 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.

[0120] The plate 186 has downwardly projecting portions 187, i.e. in the direction of the connecting elements 150. The projecting portions 187 hold, as for example in Fig. 3, the connecting elements 150 by forming a stop for the connecting elements 150.

[0121] The bracket 181 can be tensioned via a tensioning lever 184. The bracket 181 is moved upwards by pushing the tensioning lever 184 upwards.

[0122] In 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.

[0123] Furthermore, the tension lock 180 has an adjustment device 182 designed to adjust the clamping force and thus the contact force of the connecting element 150 against the central module 110. Here, the adjustment device 182 is designed as a nut 182a, wherein the length of the bracket 181 can be changed by means of the nut 182a.

[0124] Overall, the present invention achieves a modular application device in which the individual distribution modules can be quickly exchanged and their temperature can be individually controlled.

[0125] 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, described method features are also to be regarded as device features belonging to the invention—and vice versa—even if this was not explicitly mentioned.

[0126] 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, such features of individual embodiments described in combination do not necessarily have to be implemented in a particular embodiment. Reference symbol 10 containers 100 application device 110 central module 111 central adhesive feed 112 distribution channels 113 Adhesive inlet 114 Adhesive outlet 120 distribution modules 121 Adhesive channel 122 Holder (for heating element) 123 Holder (for temperature sensor) 124 Recording contour 125 mounting holes 126 mounting slot 127 control channels 128 Recording contour 129 mounting holes 130 application nozzle 140 heating element 150 fasteners 151 Adhesive channel 152 cooling fins 153 Seal seat 154 hooks 155 protruding elements 156 mounting holes 160 thermal insulation housings 170 Seal 180 tension fasteners 181 brackets 182 Adjustment device 183 Locking device 184 clamping lever 185 Release mechanism 186 plate 187 above areas 200 gluing stations 300 binding station 400 orientation star 500 gluing stars 600 transfer star 1000 bundle forming device QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2012 100 810 A1

[0002] DE 10 2011 106 759 B3

[0002] DE 103 93 236 T5

[0018] DE 101 16 022 A1

[0018] DE 197 48 978 A1

[0018] DE 692 18 238 T2

[0018]

Claims

[1] Modular application device (100), in particular a hot melt head, for applying adhesive to containers (10), in particular cans or bottles, 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 by that the distribution module (120) can be connected to the central module (110) via a connecting element (150). [3] Modular application device (100) according to claim 2, characterized bythat the connecting element (150) is designed to be heat-insulating. [4] Modular application device (100) according to claim 3, characterized by 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. [5] Modular application device (100) according to one of claims 2 to 4, characterized by that the connecting element (150) has a plurality of cooling fins (152). [6] Modular application device (110) according to one of claims 2 to 5, characterized by that the connecting element (150) has an adhesive channel (151) and preferably has a sealing seat (153), in particular formed concentrically to the adhesive channel (151). [7] Modular application device (100) according to one of the preceding claims, characterized bythat 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). [8] Modular application device (110) according to one of the preceding claims, characterized by that the distribution module (120) has control channels (127), in particular compressed air channels, for controlling the application nozzle (130) and / or cable channels for receiving and guiding cables and / or lines. [9] Modular application device (100) according to one of the preceding claims, characterized by 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 fastener (180). [10] Modular application device (100) according to claim 9, characterized bythat the clamping closure (180) has an adjusting device (182), in particular a nut (182a), for adjusting the contact pressure on the central module (110). [11] Modular application device (100) according to claim 9 or 10, characterized by that the tension lock (180) has a locking device (183) for locking a tensioned position of the tension lock (180). [12] Modular application device (110) according to one of the preceding claims, characterized by 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). [13] Modular application device (110) according to one of the preceding claims, characterized by that the central module (110) and / or the distribution module (120) are additively manufactured. [14] Gluing station (200) with a plurality of modular application devices (110) for applying adhesive to containers (10), in particular cans or bottles, according to one of the preceding claims. [15] Method for the additive manufacturing of a central module (110) and / or a distribution module (120) for an application device (100), in particular for a hot melt head, for applying adhesive to containers (10), in particular according to one of the preceding claims, wherein the method comprises the following step: Producing the central module (110) and / or 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 in a twisted manner by means of curvatures.

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