Shrinkage channel and packaging system

Abstract

The utility model discloses a shrinkage channel (1) with an internal space (IR) and a packaging system, and the internal space (IR) can be used for articles to pass through so as to shrink thermoplastic materials. The constriction channel (1) is configured to adjust the geometry of the outer boundary (17) of the interior space (IR).

Description

Technical Field

[0001] This utility model relates to a shrink channel and a packaging system. Background Technology

[0002] A shrink tunnel is a device for shrinking thermoplastic packaging material onto articles or groups of articles. For this purpose, a shrink tunnel includes a heat-resistant transport device that receives articles from an upstream conveyor and moves them through the shrink tunnel housing. A preset temperature level is maintained within the shrink tunnel housing to shrink the thermoplastic material onto the articles during their movement through the shrink tunnel housing. DE 10 2016 211 632 A1 discloses, for example, such a shrink tunnel.

[0003] To establish and maintain a predetermined temperature level within the internal space of the contraction channel housing, the contraction channel includes at least one heating device. Such heating devices require energy to regulate the temperature of the internal space. For economic and ecological reasons, it is desirable to minimize the energy requirements for operating the contraction channel. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a solution that simply reduces the energy requirement of the contraction channel.

[0005] This utility model relates to a shrinkage channel having an internal space through which an article can pass to shrink a thermoplastic material. Here, the shrinkage channel may include a shrinkage channel housing and a transport device, wherein the transport device extends through the shrinkage channel housing.

[0006] The shrinkage channel is configured to at least partially or locally adjust the geometry of the outer boundary of the internal space. By adjusting the geometry, the volume of the internal space formed in the shrinkage channel can be selectively increased or decreased, thereby achieving a larger volume for the heating chamber only when necessary for shrinking the thermoplastic material.

[0007] In other words, the interior space can be adjusted as needed, especially depending on the specific product and / or material and / or circumstances.

[0008] The heating chamber volume is smaller when handling smaller items, especially when handling larger items.

[0009] The heating chamber volume for tracks handling fewer items is particularly smaller than that for tracks handling more items.

[0010] Adjusting the geometry of the external boundary of the internal space does not refer to replacing, moving, removing, or inserting common well walls, as these well walls typically do not constitute the external boundary of the internal space. During operation, the well walls are typically heated to a similar degree as the internal space; therefore, from a thermal perspective, the well walls can be considered part of the internal space.

[0011] This type of wellbore, which is also common in existing technologies (e.g., see DE10 2011 054 780, position 50), is generally composed of only a long hollow body with discharge nozzles or discharge holes on one side or opposite sides of this hollow body.

[0012] To maintain the temperature over time at the level necessary for shrinking the thermoplastic material, the reduced volume of the heating chamber requires relatively less energy, thus simplifying the energy requirements for operating the shrinkage channel. Furthermore, it advantageously shortens the heating time required to operate the shrinkage channel.

[0013] Whenever the term "internal space" is used in this document, it refers to the corresponding area of ​​the contraction channel, which is defined by the transport device of the contraction channel, the top of the contraction channel, and the two walls of the contraction channel that respectively reach the transport device and the top. Accordingly, the outer boundary can be formed by the transport device, the top of the contraction channel, and the two walls of the contraction channel that respectively reach the transport device and the top.

[0014] The two walls that generally reach the transport device and the top can, for example, be the shell sidewalls of a contraction channel housing that is part of the contraction channel. Alternatively, two walls may be provided in the contraction channel housing that is part of the contraction channel, laterally defining the internal space and generally reaching the top and the transport device, respectively.

[0015] The article capable of moving through the internal space of the shrinkage channel to shrink the thermoplastic material can be a beverage container, particularly a beverage bottle and / or beverage can.

[0016] The items can be pre-wrapped, at least partially, with thermoplastic material in a film packaging machine.

[0017] Furthermore, regarding the contraction channel, the outer boundary of the internal space may be at least partially or partially constituted by at least one movable element having a non-metallic insulating material.

[0018] Furthermore, regarding the shrinkage channel, the shrinkage medium can be heated and guided onto the article to shrink the thermoplastic material. One possible approach is that the movable element does not guide the shrinkage medium onto the article. In other words, the movable element is not a well wall. In other words, the movable element employs a well wall-less construction scheme.

[0019] In another embodiment, the movable element is capable of guiding the contraction medium onto the article. However, this is only true when the outer well wall is, in thermal terms, also the outer boundary of the internal space. This is, for example, when the outer well wall is insulated on the side facing away from the internal space and / or, for example, isolated from the shell side.

[0020] Preferably, at least one moving element is automatically adjustable by means of an actuator. The actuator may be a pneumatic cylinder, an electric motor, a robot, or the like. The moving element can be locked in a corresponding setting or position by a locking mechanism. The locking mechanism can also be automatically operated by the same or another actuator to achieve locking and unlocking.

[0021] Furthermore, regarding the contraction channel, the distance between the heat source for the contraction medium and the internal space can be adjusted.

[0022] Furthermore, nozzles may be provided at the bottom and / or top of the contraction channel for delivering the contraction medium into the internal space. Especially when the internal space is reduced, the nozzles are particularly capable of being partially blocked and / or closed. External nozzles may particularly possess blockable and / or closable characteristics.

[0023] In a proven feasible implementation, the interior space is defined by a contraction channel housing and a transport device, wherein the contraction channel housing is extendable and retractable in the length, width, and / or height directions to adjust the geometry of the outer boundary. With this type of implementation, the geometry of the outer boundary of the interior space can be adjusted in a simple manner.

[0024] As an alternative or supplementary solution, a shrink tunnel can be configured for multi-track transport of items. The shrink tunnel includes at least one well wall positioned between two adjacent tracks, specifically extending at least nearly to the top of the shrink tunnel housing. Furthermore, the at least one well wall can be configured to extend or retract in the vertical direction. This allows for simple and quick adjustment of the shrink tunnel to accommodate items of varying heights.

[0025] The shrinkage medium can be guided from the well wall to the article. When the well wall is positioned between two adjacent tracks, it is preferable to discharge the shrinkage medium on both sides, particularly through openings located in the well wall, i.e., to the article located on the two tracks. For each shrinkage channel, there may be one, two, three, or more than two or three well walls.

[0026] Here, the corresponding well wall may include at least two components or be composed of at least two components, wherein during extension and retraction, the first component is slidably guided within the other component.

[0027] As an alternative or supplementary solution, the contraction channel may include a specific adjustment mechanism that allows both the contraction channel housing and the at least one wellbore to extend or retract in the height direction by manipulating the adjustment mechanism.

[0028] Alternatively, the contraction channel may include a first adjustment mechanism for extending and retracting the contraction channel housing in the height direction, thereby adjusting the geometry of the outer boundary. Furthermore, the contraction channel may include a second adjustment mechanism for extending and retracting the at least one well wall in the height direction. It has been proven feasible here that the at least one well wall includes at least one opening for the outflow of the contraction medium, wherein the cross-sectional area of ​​the at least one opening is adjustable by extending and retracting the at least one well wall. This allows for targeted influence on the amount of contraction medium flowing out from the at least one opening. Here, the at least one well wall may be formed such that, when the at least one retractable well wall is fully extended, the contraction medium can flow out from the at least one opening. Alternatively or supplementarily, the at least one well wall may be formed such that, when the at least one retractable well wall is fully retracted, the contraction medium can flow out from the at least one opening.

[0029] The retractable channel may include at least one actuator and a control device connected to the at least one actuator. The control device may be configured and constructed to control the at least one actuator, thereby causing the retractable channel housing to extend or retract in the length, width, and / or height directions.

[0030] Regarding stretchability in the longitudinal direction, i.e., along the conveying direction, at least one rear top component and two rear sidewalls in the stretching state can be smaller than the front top component or the front sidewall components. The rear sidewall components, in particular, can have a smaller height. The rear top component, in particular, can have a smaller width compared to the front component.

[0031] Furthermore, the outer boundary of the interior space may be provided at least partially by one or more functional elements, which are configured to change volume and preferably have a cylindrical shape. Alternatively or supplementary, the one or more functional elements may be replaceably held on the contraction channel housing and within the interior space, and preferably have a cylindrical shape.

[0032] The one or more functional elements can be held on the retraction channel housing in a certain manner, such that the longitudinal extensions of the one or more functional elements are substantially perpendicular to the conveying direction of the retraction channel. The functional elements can be the aforementioned movable elements.

[0033] The retractable channel, or the system described below, may include at least one industrial robot. Furthermore, the retractable channel may at least indirectly include a control device for controlling the at least one industrial robot, thereby automatically changing the one or more functional elements. Alternatively, the industrial robot may include a controller suitable for this purpose. In different embodiments, the one or more functional elements may be made of or comprise insulating material.

[0034] For example, the one or more functional elements may be held replaceably on top of the contraction channel housing, which is constructed as part of the contraction channel. Alternatively or supplementarily, the one or more functional elements may be held replaceably on the wall or sidewall of the contraction channel housing.

[0035] If the well wall additionally includes insulating material, the functional element may include the well wall itself. In this case, the common well wall (see above) will no longer be mentioned.

[0036] When the contraction channel is in operation, in the first processing procedure, the item may move through the contraction channel only along the first track, while in the other processing procedure, the item may move through the contraction channel along both the first track and a second track that is parallel to the first track and spaced a certain distance apart.

[0037] Since a second track is not required during the first processing step, one or more functional elements can be positioned within the area of ​​the second track after the contraction channel subsequently operates according to the first processing step. Positioning can be implemented, for example, using at least one industrial robot. In this case, the one or more functional elements can form an area of ​​the geometry of the outer boundary of the interior space. In this type of implementation, the geometry of the outer boundary of the interior space can be adjusted in a simple manner.

[0038] If the contraction channel then operates according to the second processing procedure mentioned above, the at least one industrial robot is able to remove one or more functional elements located in the area of ​​the second track, and then cause the contraction channel to operate according to the second processing procedure, and cause the article to move through the contraction channel along the first track and the second track.

[0039] This approach also applies to situations where, for example, a third processing step utilizes three tracks to transport items, followed by a switch to a second processing step that utilizes two tracks. In this case, the at least one industrial robot, worker, or retractable aisle device can position one or more functional elements in tracks not required for the corresponding processing step.

[0040] Furthermore, the outer boundary of the interior space may be at least partially formed by at least one flap, the position of which is adjustable to adjust the geometry of the outer boundary of the interior space. In this type of embodiment, the retractable channel may also include a control device and at least one actuator, wherein the control device is configured and constructed to control the at least one actuator, thereby adjusting the position of the at least one flap. Furthermore, the position of the at least one flap can be adjusted in a manner matching a selected processing procedure.

[0041] In a proven feasible implementation, the at least one flap is deflectable, and the deflection movement of the at least one flap specifically occurs about an axis extending longitudinally along the contraction channel. Alternatively or supplementarily, the at least one flap may form the top of the interior space and define the interior space vertically. In different implementations, the contraction channel may include exactly two flaps corresponding to a common axis, about which exactly two flaps are deflectable. Here, the common axis may extend longitudinally along the contraction channel and preferably has a horizontal orientation.

[0042] As previously described, the interior space may be defined laterally by at least one wall, the position of which is adjustable and, in particular, capable of horizontal movement, thereby adjusting the geometry of the outer boundary. The at least one wall may be at least nearly within reach of the transport device.

[0043] The at least one wall portion may also at least nearly reach the contraction channel housing. The contraction channel may include at least one linear guide for moving the at least one wall portion in a horizontal direction. The at least one linear guide may be arranged on the contraction channel housing or on the top side of the contraction channel housing.

[0044] According to another embodiment, the entire housing wall of the contraction channel is adjustable. This may involve the top or side wall of the contraction channel housing.

[0045] With both sidewalls adjustable, in a configuration with a smaller volume, the cross-section of the contraction channel housing can be generally π-shaped, while in a configuration with a larger volume, the cross-section is generally bracket-shaped (rotated 90°) or U-shaped (rotated 180°).

[0046] If the top of the shell wall can be adjusted as a whole relative to the side walls, the cross-section can be generally H-shaped.

[0047] The volume occupied by the entire contraction channel, defined by the outer wall of the contraction channel shell (including the internal space), can be reduced. In other words, the volume occupied by the contraction channel shell is adjustable. A π-shaped configuration falls into this category, while an H-shaped cross-section does not.

[0048] The flap and / or the wall or shell wall or shell top can also be the aforementioned movable element.

[0049] A converging tunnel can be configured to allow an object to move through the interior space via a single track. Alternatively, a converging tunnel can be configured to allow an object to move through the interior space via multiple tracks. If the converging tunnel is configured to allow an object to move through the interior space via multiple tracks, the converging tunnel may also include at least one well wall arranged between two adjacent tracks.

[0050] The at least one well wall may have at least one opening for introducing a contraction medium into the interior space of the contraction channel. The at least one opening may be configured such that the contraction medium flows out of the at least one opening with a directional component during its introduction into the interior space, the directional component pointing towards a corresponding item moving through the contraction channel via several tracks. The contraction medium may, in particular, be hot air.

[0051] In different implementations, the contraction channel may have at least three parallel tracks positioned perpendicular to the conveying direction, each used to move items through the internal space. In such implementations, at least two well walls may be provided, each arranged between two directly adjacent tracks perpendicular to the conveying direction. The contraction channel may have A1 well walls and A2 adjacent tracks perpendicular to the conveying direction. The number of well walls A1 and the number of tracks A2 may have the following relationship: A2 = A1 + 1.

[0052] In different embodiments, the contraction channel may include a contraction channel housing, wherein the contraction channel housing itself is not constructed to at least partially or locally adjust the geometry of the outer boundary of the internal space. In such embodiments, the contraction channel may

[0053] - Includes at least one wall portion positioned within the contraction channel housing, defining a portion of the outer boundary of the interior space, and its position is adjustable so that the geometry of the outer boundary of the interior space can be adjusted by means of adjustment, and / or, the contraction channel can

[0054] - Includes at least one top positioned within the contraction channel housing, which defines a portion of the outer boundary of the interior space, and whose position is adjustable so that the geometry of the outer boundary of the interior space can be adjusted by means of adjustment.

[0055] In various embodiments, the converging passage may include a transport device for moving articles through the interior space. Here, the transport device may have several independently controllable or independently driveable conveyor belts, wherein the conveyor belts are positioned at least partially adjacent to each other within the interior space. The conveyor belts are particularly parallel to each other, and their top sides extend parallel to the direction of movement of the articles.

[0056] For each available item along the track it moves along as it traverses the interior space, the converging passage can form at least one dedicated conveyor belt. The number of conveyor belts may not be the same as the number of tracks.

[0057] At any given time, at least one track can correspond to two conveyor belts. At another time, this track can correspond to only one or at least three conveyor belts.

[0058] The transport device may include at least two conveyor belts, preferably at least three conveyor belts, particularly at least four conveyor belts, or even at least seven conveyor belts. The conveyor belts may be, for example, mesh belts or the like.

[0059] The retractable channel may include a control device for which information is set regarding the number of tracks along which articles move as they pass through the internal space of the retractable channel. Here, the control device may be configured such that, for conveyor belts on selected tracks that are not required for article transport, the control device does not cause a circumferential drive of those conveyor belts; and, for conveyor belts on selected tracks that are required for article transport, the control device causes a drive of those conveyor belts.

[0060] In this way, during the operation of the contraction channel, the first conveyor belt can be temporarily not driven in a circumferential manner, while the other conveyor belt can be driven in a circumferential manner, and in this case, the transported items pass through the internal space of the contraction channel. In particular, the following scheme can be adopted: the two outer conveyor belts of the transport device are stopped at least temporarily during the operation of the contraction channel, or the two outer conveyor belts are not driven in a circumferential manner at least temporarily during the operation of the contraction channel.

[0061] Alternatively, one of the conveyor belts located between the other two conveyor belts may be temporarily stopped or not driven in a loop during the operation of the shrink tunnel.

[0062] The retractable channel may include a reservoir containing several functional elements. The reservoir may be located in the vicinity of the retractable channel. Specifically, the reservoir may be housed inside or outside the retractable channel housing. The reservoir may be mechanically connected to the retractable channel housing. The reservoir may also be positioned at a distance of at least 10 meters from the retractable channel housing.

[0063] Before the shrink tunnel is put into operation, or before the transported goods pass through the interior space of the shrink tunnel, the functional elements can be removed from the storage and sent into the shrink tunnel housing, where they remain during the operation of the shrink tunnel or during the passage of the transported goods through the interior space of the shrink tunnel.

[0064] At least two, preferably at least four, different functional elements located in the storage device may have different sizes.

[0065] The functional element may be, for example, a cube. These functional elements may have generally closed surfaces. An insulating material may be disposed within the functional element. In other embodiments, the functional element may form a cavity in which pressure conditions lower than atmospheric pressure exist.

[0066] Depending on the available dimensions, different volumes can be filled inside the shrinkage channel.

[0067] When the contraction tunnel is in operation, or when items are being moved through the contraction tunnel housing by a transport device, one or more functional elements may be erected on the transport device of the contraction tunnel. In particular, these functional elements may be erected on conveyor belts that are stopped or not driven in a circular motion during contraction tunnel operation or while transporting items through the interior space of the contraction tunnel. This allows for adjustment of the external boundaries of the interior space.

[0068] Functional components can be positioned on conveyor belts that do not transport items. In this case, the conveyor belt allows the functional components to move into and remain in the interior space of the contraction channel, while simultaneously, during the continuous operation of the contraction channel, items are moved through the interior space by means of other conveyor belts.

[0069] The conveyor belt containing the functional element may have an extension perpendicular to the conveying direction, the extension of which is substantially the same as the extension of the functional element perpendicular to the conveying direction.

[0070] In different implementations, an industrial robot may be provided to position the functional elements on the conveyor belt. This industrial robot may be constructed as part of the contraction channel. Alternatively, an industrial robot may be provided to fix the functional elements within the internal space of the contraction channel or to the top side of the contraction channel housing. The industrial robot may, for example, be a multi-axis robot.

[0071] Information about the planned end of the shrink tunnel operation can be set for the control device of the shrink tunnel, and the conveyor belt will then pull the functional components located on it out of the shrink tunnel housing.

[0072] Furthermore, a first functional element can be fed into the shrinkage channel housing via a first conveyor belt in the region on the front end side of the shrinkage channel housing, and a second functional element can also be fed into the shrinkage channel housing via a second conveyor belt in the region on the rear end side of the shrinkage channel housing.

[0073] To at least partially or locally adjust the geometry of the contraction channel, the manhole wall can be at least partially lowered vertically. Specifically, this adjustment can be achieved using a telescopic mechanism. During the descent, the manhole wall can move relative to the top of the contraction channel housing or relative to its top side. The descent can be performed by establishing or maintaining surface contact between the manhole wall and the transport device used to transport goods through the interior space of the contraction channel. This allows adjustment of the geometry of the outer boundary of the interior space. In the event of surface contact between the manhole wall and the transport device or the conveyor belt, a control device can prevent the circumferential drive of the transport device or its conveyor belt. The extension of the conveyor belt perpendicular to the transport direction can be substantially the same as the extension of the manhole wall perpendicular to the transport direction.

[0074] The position of the well wall perpendicular to the conveying direction of the transport device, which is part of the converging channel, can be adjusted. Prior to this adjustment, the well wall is first vertically raised, thus releasing any previous surface contact with the transport device or the conveyor belt, which is part of the transport device. After raising and adjusting the position, the well wall can be lowered, creating surface contact between the well wall and another conveyor belt of the transport device. During this adjustment or movement perpendicular to the conveying direction, the well wall can also access and move functional elements until they reach a defined position. In different embodiments, this adjustment of the well wall can be implemented using an industrial robot.

[0075] A method for operating a contraction channel containing an internal space is also disclosed, through which an article moves to contract a thermoplastic material. The features mentioned above regarding different embodiments of the contraction channel also apply to the following embodiments of the method, and will not be repeated.

[0076] The features described below for embodiments of the method also apply to embodiments of the contraction channel described above. The contraction channel can be configured to implement the method as described below. The method can also be implemented using the aforementioned embodiments of the contraction channel.

[0077] The article capable of moving through the shrinkage channel to shrink the thermoplastic material can be a beverage container, particularly a beverage bottle and / or can. Specifically, the beverage container assembly is wrapped with a preform made of thermoplastic material that shrinks within the shrinkage channel. The thermoplastic material is particularly a heat-shrinkable film made especially of PE (polyethylene).

[0078] The contraction channel has several different processing programs. These different processing programs can be stored on the control device of the contraction channel. In the method, one of the different processing programs is selected. Furthermore, the geometry of the outer boundary of the internal space is adjusted, at least partially or locally, in a manner matching the selected processing program.

[0079] In a proven implementation, the converging channel automatically adjusts the geometry of the outer boundary of the interior space in a manner matching the selected processing procedure. Alternatively, an industrial robot automatically adjusts the geometry of the outer boundary of the interior space in a manner matching the selected processing procedure.

[0080] The internal space can be defined by a contraction channel housing and a transport device. Accordingly, the bottom side of the internal space can be defined by the upper surface of a conveyor for transporting items. In this case, the geometry of the outer boundary of the internal space is adjusted by extending and retracting the contraction channel housing in the length, height, and / or width directions. Here, the contraction channel housing may include an outer housing wall and an inner housing wall, wherein an insulating material is provided between the outer housing wall and the inner housing wall. The insulating material can be constructed and positioned such that it separates or converges with each other during the extension and retraction of the contraction channel housing. In different embodiments, the insulating material itself is expandable. Thus, even when the contraction channel housing extends and retracts in the length, height, and / or width directions, the contraction channel housing remains insulated.

[0081] At least one actuator may be provided, which is connected to the control device of the retractable channel. The control device is capable of adjusting the external boundaries of the internal space, specifically by manipulating the at least one actuator in a manner matched with a selected processing program, causing the retractable channel housing to extend or retract in the length, height, and / or width directions.

[0082] The outer boundary of the interior space may also be provided, at least partially, by one or more functional elements. Here, the volume of the one or more functional elements may be increased or decreased, thereby adjusting the geometry of the outer boundary of the interior space.

[0083] For example, a liquid or gaseous medium can be introduced into one or more functional elements, causing the volume of the one or more functional elements to increase.

[0084] Furthermore, liquid or gaseous media can subsequently be discharged from the one or more functional elements, causing the one or more functional elements to reduce their volume. Additionally, the volume can be increased or decreased in a manner compatible with the selected processing procedure.

[0085] As an alternative or supplementary solution, one or more functional elements are replaced, and hereby replaced with another or several functional elements having a larger or smaller volume, thereby adjusting the geometry of the outer boundary of the internal space.

[0086] In this regard, an industrial robot may be provided or used for this purpose, which automatically replaces one or more functional elements as needed in a manner that matches the process to be executed or selected.

[0087] Furthermore, the outer boundary of the interior space may be formed at least partially by at least one flap. In this case, the geometry of the outer boundary of the interior space can be adjusted by adjusting the position of the at least one flap.

[0088] In a proven feasible implementation, the position of the at least one flap is adjusted by deflecting it, particularly about an axis extending longitudinally along the contraction channel and preferably horizontally. The at least one flap may be the top of the interior space, defining the interior space vertically. In other implementations, the at least one flap may be a wall defining the interior space laterally.

[0089] Furthermore, the interior space may be defined laterally by at least one wall, and the geometry of the outer boundary can be adjusted by regulating the position of said at least one wall, particularly by moving it horizontally. The position or horizontal movement can be adjusted using actuators based on commands from the control device and in a manner matching a selected or pending processing procedure.

[0090] It has been proven feasible to provide at least one seal between the at least one wall portion and the transport device of the contraction channel. The transport device may include a transport member driven in a wraparound manner, the upper return section of which provides a placement surface for the article. The at least one seal may have surface contact with the upper return section of the wraparound driven transport member.

[0091] In proven feasible embodiments, the material selected for the at least one seal is such that static friction between the transport member and the at least one seal is minimized during circumferential driving of the at least one transport member. The at least one seal may, for example, be made of plastic. In such embodiments, the risk of premature wear of the circumferentially driven transport member due to surface contact with the at least one seal can be eliminated.

[0092] The interior space may also be defined laterally by at least one wall, which can be adjusted and, in particular, stretched or contracted in the vertical direction to adjust the geometry of the outer boundary.

[0093] Shrink tunnels can be incorporated as components of packaging systems for articles. In particular, shrink tunnels can be incorporated as components of packaging systems for beverage containers. The packaging system may include a filling machine for filling articles or beverage containers with liquids, particularly liquid beverages. The filling machine may be arranged upstream of the shrink tunnel in the direction of flow of the articles or in the direction of flow of the beverage containers. Therefore, it should be clarified that such a filling machine may be arranged upstream of the shrink tunnel.

[0094] As an alternative or supplementary solution, the packaging system may include a station located upstream of the shrink tunnel for arranging preforms made of thermoplastic material onto articles, groups of articles, or beverage containers or groups of beverage containers.

[0095] As an alternative or supplementary solution, the packaging system may also include a machine for applying an adhesive bond to articles or beverage containers, by which several articles or beverage containers can be secured to each other as a bundle, particularly as a sub-bundle.

[0096] The packaging solutions mentioned are not restrictive; therefore, stretch winding machines or other packaging modules can also be incorporated into the packaging system.

[0097] The packaging system may also include grouping stations that follow a shrinking channel downstream and are used to bring several items or beverage containers or bundles into a relative arrangement relative to each other, which matches a stackable layer to be formed of several items or beverage containers or bundles.

[0098] Such a grouping workstation may, for example, include at least one Delta motion system robot that brings items, groups of items, or bundles into the relative layout, which matches a stackable layer consisting of several items, several beverage containers, or several bundles.

[0099] The packaging system may also include a station that gathers the already arranged items, beverage containers or bundles together to form a complete stackable layer.

[0100] The packaging system may also include a palletizing station configured to move stackable layers onto corresponding pallets and stack them. The palletizing station is located downstream of the shrink tunnel. In this type of embodiment, the packaging system may include a feeding device that partially or fully autonomously provides the palletizing station with pallets for stacking and accommodating several stackable layers.

[0101] Therefore, this utility model also relates to a packaging system having a shrink channel according to the foregoing embodiment, having a grouping station downstream following the shrink channel configured to establish a relative layout of articles matching stackable layers, having a station capable of gathering articles using the relative layout to form stackable layers, and having a palletizer downstream following the grouping station configured to move stackable layers onto corresponding pallets.

[0102] Here, the items can be constructed as components of a bundle, which is formed by shrinking thermoplastic material onto several items through shrink channels. Specifically, the items can be constructed as beverage containers.

[0103] In addition, a standby mode may be provided, in the event of a specification conversion, a failure of the shrink channel or other upstream or downstream system components, or a shortage or backlog of items for other reasons, in which the shrink channel can operate in standby mode.

[0104] Standby mode is used to save energy during production pauses, but allows for a quick switch back to production mode. In standby mode, a temperature higher than ambient temperature is maintained within the internal space of the retraction tunnel.

[0105] If a specification change occurs that accompanies a production halt, the internal space volume can be reduced during the first half of the production halt, preferably at the beginning of the halt.

[0106] If a specification change occurs that accompanies a production halt, the internal space volume can be increased during the latter part of the production suspension, preferably just before the halt ends.

[0107] In addition, the internal space volume can be reduced, particularly in a manner unrelated to specification changes, failures, and other events, during the first half of the production schedule.

[0108] This also allows the thermoplastic material to move through the internal space. It at least partially wraps the item, especially the entire item assembly, and adheres tightly to the item during heating.

[0109] This invention also relates to a contraction channel with an internal space through which an article can pass to contract a thermoplastic material, wherein the contraction channel is configured to adjust the extension of at least one internal space boundary when viewed from any point. In other words, the distance between a point and at least a portion of the internal wall boundary is adjustable. Here, a common well wall similarly does not define an internal space. This invention encompasses all described herein and the accompanying drawings.

[0110] This invention also relates to a shrinkage channel with an internal space through which an article can pass to shrink a thermoplastic material, wherein the volume of the heatable internal space is adjustable. In terms of method, this can be referred to as adjusting the internal space volume. Here, the common well wall does not affect the internal space volume. For example, the internal space volume can be reduced by sending in an additional, self-insulating object. This invention encompasses all described herein, along with the accompanying drawings and corresponding descriptions. Attached Figure Description

[0111] In the following sections, embodiments of the present invention and their advantages will be explained in more detail with reference to the accompanying drawings. The dimensional proportions of individual elements in the drawings do not always correspond to actual dimensional proportions, as some shapes are simplified and others are enlarged for better illustration compared to other elements.

[0112] Figures 1A to 1C This is a schematic diagram of a first embodiment of the contraction channel of the present invention, and shows the steps that can be taken in various embodiments of the described method.

[0113] Figure 2A and Figure 2B This is a schematic diagram of a second embodiment of the contraction channel of the present invention, and shows the steps that may be used in other embodiments of the described method.

[0114] Figure 3A and Figure 3B This is a schematic diagram of a third embodiment of the contraction channel of the present invention, and shows the steps that may be used in other embodiments of the described method.

[0115] Figure 4A and Figure 4B This is a schematic diagram of a fourth embodiment of the contraction channel of the present invention, and also shows the steps that may be used in other embodiments of the described method.

[0116] Figure 5 The steps are illustrated in a flowchart, and these steps can be performed individually or in sequence. Figure 5 The combinations and sequences shown are arranged in various implementations of the described method.

[0117] Figure 6 and Figure 7 These are schematic diagrams of the fourth and fifth embodiments of the contraction channel of this utility model. Detailed Implementation

[0118] The same reference numerals are used for elements that are identical or have the same effect in this invention. Furthermore, for clarity, only the reference numerals necessary for illustrating the relevant figures are shown in each figure. The embodiments shown are merely examples of the design schemes of this invention and do not represent conclusive limitations.

[0119] Figures 1A to 1C This is a schematic diagram of the first embodiment of the contraction channel 1 of this utility model, and shows the method 100 (see...). Figure 5 The steps that can be taken in various embodiments of the contraction channel 1 are as follows. The contraction channel 1 includes a contraction channel housing 3 and a transport device 19. The transport device 19 extends through the contraction channel housing 3 and carries the article 2 (see...) Figure 4A It moves along the conveying direction TR, thereby shrinking the thermoplastic material onto the article during the movement.

[0120] To allow article 2 to enter the shrinkage channel housing 3, the shrinkage channel housing 3 has an input 7. After the thermoplastic material is shrunk onto the article, the corresponding article 2 exits the shrinkage channel housing 3 through the output 9.

[0121] To ensure that the properties of the thermoplastic material shrunk onto article 2 meet specified target standards, the temperature level formed in the internal space IR of the shrinkage channel 1 needs to remain as constant as possible over time and conform to specified temperature levels. In practice, at least one temperature sensor is provided in the internal space R of the shrinkage channel 1, which is connected to the control device S.

[0122] The control device S can detect the corresponding temperature level in real time via the temperature sensor and, as needed, adjust a heating device (not shown here for clarity), which is part of the shrinkage channel 1, to maintain the temperature level in the internal space IR at least nearly constant over time. It is also necessary to move the article 2 along with the thermoplastic material through the internal space IR at a predetermined speed, so that the thermoplastic material remains in the internal space IR for a predetermined residence time, and to prevent the shrinkage result from being negatively affected by excessively long or short residence times.

[0123] The transport speed of the transport device 19 is also set by the control device S, and for this purpose, the transport device 19 is connected to the control device S.

[0124] Figures 1A to 1C These are schematic longitudinal sectional views of the contraction channel housing 3. Therefore, the top 12 of the contraction channel housing 3 can be identified, but the two opposing side walls 14 and 15 cannot be identified (see [reference]). Figure 3A The internal space IR is defined by the transport device 19, the top 12, and the two opposing side walls 14 and 15 of the contraction channel housing 3.

[0125] The boundary of the internal space IR, or the external boundary, is indicated by reference numeral 17. A heating chamber is defined by the external boundary 17, through which an article is moved by a transport device 19.

[0126] As mentioned earlier, the temperature level in the internal space IR needs to be kept constant over time in order to allow the thermoplastic material to shrink smoothly into item 2 (see [reference]). Figure 4A Preferably, the energy requirement of the heating device for achieving temperature control of the interior space can be reduced in a simple manner.

[0127] To this end, the contraction channel 1 can reduce energy requirements in a simple way by adjusting the geometry of the outer boundary 17 of the internal space IR using an actuator. Furthermore, by adjusting the geometry of the outer boundary 17 as described below, the heating time for the internal space IR can be shortened.

[0128] Here, information about the processing procedure to be executed is first set for the control device S. In the embodiments described herein, and in general, such information may include, for example, the size of the corresponding article 2, the number of tracks for conveying the article 2 to the shrinkage channel 1, the temperature level to be formed in the internal space IR, the predetermined residence time of the article 2 in the shrinkage channel housing 3, the transport speed of the transport device 9, and / or other data related to the processing procedure to be executed through the shrinkage channel 1.

[0129] Subsequently, taking this information into account, the control device S is able to deduce the appropriate geometric dimensions of the outer boundary 17 of the internal space IR, which match the processing procedure to be executed. The information regarding the processing procedure to be executed may also include data on the geometric dimensions of the outer boundary 17 of the internal space IR, based on which the processing procedure is executed via the contraction channel 1.

[0130] The information can be set by the user.

[0131] However, a sensor connected to the control device S may also be provided. The control device S can identify items 2 that have not yet entered the contraction channel 1 through the sensor, and then automatically select a processing procedure in a manner that matches the construction scheme of the identified items 2.

[0132] Therefore, after setting information about the processing procedure to be executed for the control device S, such as... Figures 1A to 1C The shrinkage channel 1 shown in this embodiment can automatically adjust the geometry of the outer boundary 17 of the internal space IR. Figure 1A and Figure 1B The adjustments that can be made to the geometry of the outer boundary 17 of the interior space IR are shown in combination.

[0133] From such Figure 1A The position shown indicates that the upper part 13 of the contraction channel housing 3 will be lowered until the upper part reaches the position shown. Figure 1B The position shown. The descent of the upper part 13 is achieved using an actuator, wherein in a proven feasible embodiment, the retractable channel housing 3 is configured to extend and retract in the height direction, or the two opposing sidewalls 14 and 15 of the retractable channel housing 3 (see...) Figure 3A It adopts a scalable construction scheme. Similar to section 13 above... Figure 1A Compared to the position shown, in the upper part, as Figure 1B In the location shown, the volume to be heated in the internal space IR is smaller, therefore, in Figure 1B In order to heat the internal space IR, which has a reduced volume, the energy requirement of the heating device is reduced.

[0134] Therefore, the energy consumption of the contraction channel 1 can be easily reduced by the processing method shown, because the volume of the internal space IR is matched with the processing program to be executed by adjusting the outer boundary 17 of the internal space IR.

[0135] In practice, in cases such as Figure 1B In the processing procedure shown, for example, items 2 can move through the contraction channel housing 3, and the height of these items is greater than that in... Figure 1A The item 2, which moves through the contraction channel housing 3 in the illustrated processing procedure, is smaller. Figure 1B In this case, the geometry of the outer boundary 17 and the reduced volume of the internal space IR are sufficient to shrink the thermoplastic material onto the article 2 with a reduced height.

[0136] Will Figure 1A and Figure 1B Combining these, it can also be seen that, with Figure 1A compared to, Figure 1B The areas of the input 7 and output 9 of the contraction channel housing 3 are also reduced. This results in a reduction in the area of ​​the input 7 and output 9 of the contraction channel housing 3. Figure 1A Compared to the processing procedure shown, in such a case Figure 1B The processing procedure shown has a smaller proportion of hot air flowing out of the contraction channel housing 3 via input 7 and output 9, further reducing energy demand. Furthermore, it has been proven feasible to provide additional components in the regions of input 7 and output 9 that further suppress the outflow of hot air from the contraction channel housing 3, thereby minimizing energy consumption as much as possible.

[0137] Will Figure 1A , Figure 1B and Figure 1C In combination, other advantages of the embodiment of the contraction channel 1 shown in FIG1 can be seen. Accordingly, the upper part 13 of the contraction channel housing 3 can be moved from, as shown in FIG1... Figure 1A The position shown was further raised to, as Figure 1C The location shown allows the hot air previously stored in the internal space IR to escape completely from the contraction channel housing 3.

[0138] If the workstation following the shrinkage channel 1 needs to be shut down due to a malfunction, the article 2 and its applied thermoplastic material contained in the internal space IR of the shrinkage channel 1 may not be further processed until the malfunction is resolved. Since the internal space IR is hot, and the prolonged residence of article 2 and the thermoplastic material may cause damage to the article or defects in the shrinkage of the thermoplastic material, article 2 and the thermoplastic material, still in the shrinkage channel 1, should be removed from the shrinkage channel 1.

[0139] In known embodiments of the prior art, a horizontal conveyor typically follows the contraction channel 1, with a capacity at least corresponding to the items 2 located in the contraction channel 1 at any given time. If further processing of the items 2 located in the contraction channel 1 is temporarily not possible, all items 2 are removed from the contraction channel 1 and temporarily stored via the horizontal conveyor. In practice, this horizontal conveyor is also referred to as an empty conveyor line.

[0140] By raising the upper part 13, hot air can be completely exhausted from the internal space IR. Therefore, in this type of embodiment, there is no need to provide a horizontal conveyor for temporarily storing items 2 immediately following the contraction channel 1. Thus, by means of the contraction channel 1, Figures 1A to 1C The implementation shown allows for a relatively short and simple packaging line structure.

[0141] Figure 2A and Figure 2B This is a schematic diagram of a second embodiment of the contraction channel 1 of the present invention, and shows the method 100 described (see [reference]). Figure 5 Other implementations of ) may employ steps. (Similar to...) Figures 1A to 1C The illustrated embodiments correspond to, for example Figure 2A and Figure 2B The shrink tunnel 1 in the illustrated embodiment also includes a transport device 19 and a shrink tunnel housing 3, which comprises an upper portion 13 and two opposing sidewalls 14 and 15 (see...). Figure 3A ),in, Figure 2A and Figure 2B All are longitudinal sectional views of the contraction channel 1, therefore in Figure 2A and Figure 2B The two opposing sidewalls 14 and 15 are not shown in the diagram.

[0142] Same as above Figures 1A to 1CAs in the illustrated embodiment, the control device S can be provided with information about the processing procedures to be executed by the contraction channel 1. Several functional elements 16 are provided on the upper part 13 of the contraction channel housing 3, all of which extend toward the image plane, are cylindrical, and form a segment of the outer boundary 17 of the internal space IR.

[0143] The processing procedure shown in Figure 2 requires a large internal space IR volume, while for example... Figure 2B In the illustrated processing procedure, the reduced volume of the internal space IR is sufficient to shrink the thermoplastic material onto article 2. Figure 2A and Figure 2B In the illustrated embodiment, the volume of the internal space IR is set by adjusting the geometry of the outer boundary 17 of the internal space IR through the functional element 16. Figure 2B compared to, Figure 2A The functional element 16 in the middle has a larger cross-sectional diameter.

[0144] In order to achieve the following in functional element 16 Figure 2A and Figure 2B Switching between the construction schemes shown, for example, can be achieved using an industrial robot (not shown) to connect components with... Figure 2A The functional element 16 with the shown cross-sectional diameter is removed from the upper part 13 of the contraction channel housing 3 and replaced with, as shown in the figure Figure 2B The functional element 16 is shown. If the processing program is switched again, the industrial robot can perform tasks such as... Figure 2B The functional element 16 shown is removed from the upper part 13 and then reassembled as shown. Figure 2A The functional element 16 shown is mounted on the upper part 13 of the contraction channel housing 3.

[0145] Alternatively, all functional elements 16 can remain on the upper part 13 of the contraction channel housing 3, and the functional elements 16 can be configured to change their cross-sectional diameter. In this case, for example, a liquid or gaseous medium can be introduced into the functional elements 16, such that the functional elements 16... Figure 2A The cross-sectional diameter shown increases until the functional element 16 reaches the level of... Figure 2B The cross-sectional diameter is shown.

[0146] If it is necessary to reduce the cross-sectional diameter of the functional element 16, the liquid or gaseous medium can be discharged or exported from the functional element 16, thereby reducing the cross-sectional diameter of the functional element 16 again, and in this case, as shown in the example... Figure 2A The construction scheme shown.

[0147] Here, in a preferred embodiment, as... Figure 2BWhen the cross-sectional diameter of the functional element is increased, a liquid medium with high heat storage capacity is introduced into the functional element 16. This type of functional element 16 can store thermal energy by means of the contained liquid medium, thereby further reducing the energy demand of the contraction channel 1.

[0148] Here, the functional element 16 is arranged on the upper part 13 of the contraction channel housing 3. However, as an alternative or supplementary solution, one or more functional elements 16 may also be arranged on the side wall 14 or 15 of the contraction channel housing 3 (see...). Figure 3A The longitudinal extension of functional element 16 is generally perpendicular to the conveying direction TR of the contraction channel 1.

[0149] However, functional element 16 can also be positioned such that its longitudinal extension extends along the conveying direction TR or is oblique to the conveying direction TR. The number of functional elements 16 shown is exactly seven, which is only an example. In other embodiments, the contraction channel 1 may have other numbers of functional elements 16, or the contraction channel 1 may have only one functional element 16.

[0150] The contraction channel housing 3 can also be used in conjunction with the aforementioned... Figures 1A to 1C The description corresponds to a scalable method, and further includes a functional element 16 or several functional elements 16 that at least partially form the geometry of the outer boundary 17 of the internal space IR.

[0151] Figure 3A and Figure 3B This is a schematic diagram of a third embodiment of the contraction channel 1 of this utility model, and shows the method 100 described (see [reference]). Figure 5 Other embodiments of the retractable channel 1 may employ the following steps. The retractable channel 1 includes a transport device 19 and a retractable channel housing 3. Here, the outer boundary 17 of the internal space IR is provided by the side walls 14 and 15 of the retractable channel housing 3, the transport device 19, and two flaps 23 and 24, which form the top 12 of the internal space IR and define the internal space IR vertically. The flaps 23 and 24 are arranged on the upper portion 13 of the retractable channel housing 13.

[0152] Will Figure 3A and Figure 3B In combination, it can be seen that the flip covers 23 and 24 perform a deflection movement, thereby adjusting the geometry of the outer boundary 17 of the internal space IR. Based on the instructions of the control device S, the actuator performs the deflection movement or adjusts the outer boundary 17 of the internal space IR in a manner that matches the processing program to be executed.

[0153] Figure 4A and Figure 4BThis is a schematic diagram of the fourth embodiment of the contraction channel 1 of this utility model, and shows the method 100 described (see [reference]). Figure 5 Other embodiments of the shrinkage channel 1 may employ the following steps. A fourth embodiment of the shrinkage channel 1 also includes a shrinkage channel housing 3 and a transport device 19 by means of which the article 2 is moved in order to shrink the thermoplastic material.

[0154] exist Figure 4A and Figure 4B In the example, item 2 moves along several parallel tracks. Figure 4A In the processing procedure shown, item 2 moves in three parallel tracks, while as... Figure 4B In the processing procedure shown, item 2 is transported through the contraction channel housing 3 in only two parallel tracks.

[0155] like Figure 4A and Figure 4B As shown, item 2 is first transported in three parallel tracks, and then... Figure 4B In the case of transporting items in only two parallel tracks, the volume of the internal space IR or the heating cavity can be reduced. In order to reduce the volume of the internal space IR and thus reduce the energy requirement when adjusting the temperature of the internal space IR, the geometry of the outer boundary 17 of the internal space 17 is also adjusted.

[0156] According to Figure 4A and Figure 4B In this embodiment, the contraction channel 1 includes two walls 26 and 28, both of which are movable in a horizontal direction, thereby decreasing or increasing their distance from each other and adjusting the geometry of the outer boundary 17 of the internal space IR. Both walls 26 and 28 can be arranged on the contraction channel housing 3 by means of a linear guide device.

[0157] Well walls 32 and 34 are provided between directly adjacent tracks, separating them from each other. Well walls 32 and 34 may include openings through which hot air can flow into the internal space IR. Well walls 32 and 34 can also be moved horizontally, thereby allowing hot air to flow from... Figure 4A The three-track transportation switch shown is as follows: Figure 4B The dual-track transport shown.

[0158] Figure 5 The steps are illustrated in a flowchart, and these steps can be performed individually or in sequence. Figure 5 The combinations and sequences shown are arranged in various embodiments of the method 100.

[0159] In the first method step 110, a process is selected from several different processes for the contraction channel 1. After selecting the process according to step 110, the geometry of the outer boundary 17 of the inner space IR of the contraction channel 1 is adjusted (second method step 120), through which the transport device 19 of the contraction channel 1 extends.

[0160] After adjusting the outer boundary 17 of the internal space IR, in the third method step 130, the article 2 is moved through the internal space IR by the transport device 19, wherein the thermoplastic material is contracted onto the article 2.

[0161] Figure 6 The fourth embodiment is shown. Wall portions 26 and 28 are adjustable horizontally, particularly along the guide 61 at the top 60 of the housing. Furthermore, well walls 32 and 34 can be adjusted on the same guide 61 or on another guide (not shown). This embodiment may have a π-shaped cross-section. A seal 51, particularly adjustable together, may be provided, arranged between the housing wall 28 and the transport device 19.

[0162] Figure 7 The fifth embodiment is shown. The top 60 is particularly adjustable vertically along the guide 62. The wellbore walls 32 and 34 can be arranged in a manner that allows them to be adjusted relative to the top 60 (the mechanism including the guide is not shown).

[0163] The top 60, the sidewalls 14 and 15 of the contraction channel housing 3 specifically include insulating materials such as asbestos or the like.

[0164] List of reference numerals

[0165] 1. Contraction Channel

[0166] 2 items

[0167] 3. Contraction Channel Housing

[0168] 7 Input

[0169] 9 Output

[0170] 12 Top

[0171] 13 Upper part (contraction channel shell 3)

[0172] 14. Sidewall (Contraction Channel Shell 3)

[0173] 15. Sidewall (Contraction Channel Shell 3)

[0174] 16 Functional Components

[0175] 17. External Boundary

[0176] 19. Transport equipment

[0177] 23 First flip cover

[0178] 24 Second flip cover

[0179] 26 wall

[0180] 28 wall

[0181] 32 Wellwall

[0182] 34. Well wall

[0183] 51 Seals

[0184] 60 Top

[0185] 61 Guiding Components

[0186] 62 guide components

[0187] 100 methods

[0188] 110 Method Steps, First Method Steps

[0189] Method 120, Step 2

[0190] 130 Method Steps, Third Method Steps

[0191] IR internal space

[0192] S control device

[0193] TR (Transmission Direction)

Claims

1. A shrink tunnel (1) having an internal space (IR) through which an article (2) can pass in order to be shrunk with a thermoplastic material, characterized in that, The contraction channel (1) is configured to at least partially or locally adjust the geometry of the outer boundary (17) of the interior space (IR).

2. The shrink channel (1) according to claim 1, wherein The outer boundary (17) of the inner space (IR) is at least partially or partially composed of at least one movable element having a non-metallic insulating material.

3. The shrink channel (1) according to claim 2, wherein The shrinkage medium is heated and directed onto the article (2) to shrink the thermoplastic material, wherein the movable element does not direct the shrinkage medium onto the article (2).

4. The shrink channel (1) according to claim 1 or claim 2, wherein The internal space (IR) is defined by a contraction channel housing (3) and a transport device (19), wherein the contraction channel housing (3) is configured to be able to stretch and extend in the length, width and / or height directions, thereby adjusting the geometry of the outer boundary (17).

5. The shrink channel (1) according to claim 1 or claim 2, wherein, The outer boundary (17) of the interior space (IR) is provided at least partially by one functional element (16) or by several functional elements (16), said functional element - Constructed to change its volume, and / or - It is held in a replaceable manner on the contraction channel housing (3) and in the internal space (IR).

6. The shrink channel (1) according to claim 5, wherein The functional element (16) has a cylindrical shape.

7. The shrink channel (1) according to claim 1 or claim 2, wherein The outer boundary (17) of the interior space (IR) is at least partially formed by at least one flap (23, 24), the position of which is adjustable in order to adjust the geometry of the outer boundary (17) of the interior space (IR).

8. The shrink channel (1) according to claim 7, wherein The at least one flap (23, 24) is deflectable, and the deflection movement of the at least one flap (23, 24) is particularly about an axis extending longitudinally along the contraction channel (1).

9. The shrink channel (1) according to claim 7, wherein The at least one flap (23, 24) forms the top (12) of the interior space (IR) and defines the interior space (IR) in the vertical direction.

10. The shrink channel (1) according to claim 8, wherein The at least one flap (23, 24) forms the top (12) of the interior space (IR) and defines the interior space (IR) in the vertical direction.

11. The shrink channel (1) according to claim 1 or claim 2, wherein The interior space (IR) is laterally defined by at least one wall (26, 28), the position of which is adjustable and particularly capable of moving in the horizontal direction, thereby adjusting the geometry of the outer boundary (17).

12. The shrink channel (1) according to claim 11, wherein At least one seal is provided between the at least one wall portion (26, 28) and the transport device (19) of the contraction channel (1).

13. The shrink channel (1) according to claim 1 or claim 2, wherein, The distance between the heat source of the contractile medium and the internal space (IR) is adjustable.

14. A packaging system comprising a shrink tunnel (1) as claimed in any one of claims 1 to 13, characterized in that, The packaging system includes a grouping station downstream following the shrinkage channel (1), configured to create a relative layout of articles (2) that matches the stackable layers, including a station capable of bringing together articles (2) using the relative layout to form stackable layers, and a palletizer downstream following the grouping station, the palletizer being configured to move the stackable layers onto corresponding pallets.

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