PACKAGING MACHINE OR PACKAGING LINE WITH DYNAMIC RECIPE CHANGE

Description

[0001] The present invention relates to a device for a packaging process according to claim 1. Furthermore, the invention relates to a method for performing a recipe change on an intermittently operating packaging machine or on an intermittently operating packaging line according to method claim 10.

[0002] On a packaging machine, and especially on a packaging line composed of several (packaging) machines, operators are confronted with a variety of tasks when changing items, i.e., when changing recipes, which may involve a change of format and / or product, for example, with numerous process parameter readjustments and / or tool changeovers.

[0003] Traditionally, when changing recipes on a packaging line or machine, the currently produced packaging type is completely emptied. Then, the operator performs all necessary changeover actions in one go to produce the new packaging recipe, for example, a different packaging type. However, this approach, in which the packaging machine or line is first completely emptied and then completely reconfigured or reset in a single, often extensive changeover process, consumes a lot of raw materials (film, labels, etc.) and time. Furthermore, experience shows that this results in significant downtime for the packaging line or machine, thus increasing packaging production costs.

[0004] EP 3 133 022 B1 discloses a process for completely emptying the packaging line or packaging machine in order to change recipes. This traditionally involves a complex changeover procedure that is both labor-intensive and time-consuming, particularly dependent on the operator's expertise, as all stations of the packaging line or packaging machine must be set up and / or reconfigured for the new recipe at once. This poses a significant challenge for the operating personnel.

[0005] DE 10 2012 221 458 B3 discloses a packaging machine with several drive units which can be adjusted sequentially for format changes. The respective format change at each drive unit only takes place after the last component of an old format has passed the respective drive unit.

[0006] DE 10 2017 125 077 A1 discloses a thermoforming packaging machine with several workstations configured for processing different packaging formats. With regard to the position of the respective packaging format relative to the pre-set workstation, different feed length requirements can be determined for the respective packaging formats, on the basis of which the feed of a feed unit for transporting the packaging film can be controlled.

[0007] The object of the invention is to make recipe changes easier for the operating personnel of a packaging machine or packaging line, which also results in an increased potential for increasing the efficiency of the packaging machine or packaging line.

[0008] This problem is solved by a device according to claim 1 and by means of a method according to claim 10.

[0009] Advantageous further developments of the invention are given by the respective subject matter of the dependent claims.

[0010] The invention relates to a device for a packaging process, wherein the device is in the form of a stepwise operating packaging machine or is designed as a stepwise operating packaging line, each comprising at least one first workstation, at least one second workstation spaced apart from the first workstation in the production direction, and at least one control device functionally connected to the first and the second workstation, which is configured to, by means of a first control step in response to a recipe change activated on the packaging machine or on the packaging line, switch from one packaging recipe to another,The second packaging recipe for the production of a work cycle formed in the production direction first within the first workstation according to the second packaging recipe, automatically sets at least one process parameter required for this at the first workstation and / or indicates to an operator at least one changeover action of the first workstation, wherein the control device is further configured to automatically set at least one process parameter required for this at the second workstation and / or indicate to an operator at least one changeover action of the second workstation in response to the activated recipe change by means of a second control step for the production of the work cycle formed in the production direction first within the second workstation according to the second packaging recipe.

[0011] According to the invention, the control device is designed to perform the second control step only after the first control step has been carried out when a work cycle directly preceding the first work cycle formed according to the second packaging recipe in the production direction, and which was last formed according to the first packaging recipe within the first work station, has advanced from the first work station to the second work station or has at least partially been processed therein.

[0012] In other words, in the invention, despite the activated recipe change, the packaging batch produced up to that point along the packaging machine or packaging line according to the first packaging recipe, i.e., the work cycle located within the first workstation at the time of activation of the desired recipe change, as well as the work cycles preceding it in the production direction along the packaging machine or packaging line, are still completely produced to completion.In this process, the respective workstations of the packaging machine or packaging line, which need to be reset and / or retooled for the recipe change, can be switched to the second packaging recipe step by step, one after the other, i.e., only when the work cycle that is in the preceding first workstation at the time of activation of the desired recipe change arrives in them at a later time or is at least partially completed in them.

[0013] The changeover of individual workstations from operation according to the first packaging recipe to operation according to the second packaging recipe thus takes place sequentially, one after the other, at intervals from workstation to workstation. The point in time at which changeover and / or retooling actions can be activated at the respective workstations positioned one after the other in the production direction depends on the number of intervening work cycles. Consequently, significantly less material waste is generated, or it can be reduced to a minimum, because the recipe change occurs virtually seamlessly.

[0014] The invention allows recipe changes to be integrated economically and in a manageable way for the operator into the ongoing packaging process. Unlike the prior art, the invention eliminates the need to completely empty the packaging machine or line and perform a lengthy machine or line stoppage to carry out all changeover actions at once before the packaging process continues for the new recipe. Instead, the invention achieves significantly shorter downtimes for retooling the packaging line or packaging machine because the changeover actions, such as various tool changes at individual workstations and / or new parameter settings, are carried out sequentially from workstation to workstation, while the packaging process continues in between. Thus, along the packaging machine or...Along the packaging line, the workstations, arranged sequentially in the production direction, are optimally configured one after the other for the new recipe. In other words, the invention allows the conventional large changeover project required of the operator for recipe changes to be divided into several smaller, more manageable changeover projects.

[0015] Since, in the invention, the respective workstations are only converted for the new packaging recipe and / or assigned new process parameters when a corresponding work cycle is imminent at the respective workstation, the consumption of raw material for the recipe change can be greatly reduced.

[0016] A recipe change within the meaning of the invention means the switch between different packaging recipes or recipe creations, in particular a format-specific change, for example a change from 2x2 to 3x3 packages per machine cycle, the change to a different packaging type, for example the change to a different thermoforming tray shape, at least one process parameter-based change, preferably at least one desired target process value, for example a desired vacuum value, a desired evacuation and / or gassing pressure, a desired sealing temperature, a product-based change, for example the change to a different food product as the packaging material, and / or at least one material-specific change, e.g. the change to a new film type.

[0017] It is conceivable that the operator could use the control unit, in particular by accessing various recipe creations from a connected memory and / or database, for example, a cloud-based database. Each recipe creation could contain a multitude of the aforementioned changes. The operator could then activate the different recipe batches via the control unit at the touch of a button, thereby initiating the recipe change on the packaging machine or packaging line.

[0018] One variant provides that the control unit is configured to execute the first control step when the work cycle directly preceding the work cycle to be produced first according to the second packaging recipe, and the work cycle to be produced last according to the first packaging recipe, has advanced into the first work station or has at least partially been processed there. Between this and the subsequent work cycle, the control unit can define a changeover limit, the interval-wise shifting of which in the production direction of the packaging machine or packaging line is visualizable for an operator.

[0019] Preferably, the device includes a display device, which is particularly present as part of the control unit. Based on the first control step, the display device visualizes at least one instruction for the operator to perform the changeover of the first workstation, and / or based on the second control step, at least one instruction for the operator to perform the changeover of the second workstation. This instruction could, for example, be a task list for changing over the respective workstation and / or a video illustrating the necessary steps for changing over the respective workstation. According to one variant, the display device can also visualize the changeover limit.

[0020] It is conceivable that the control unit is configured, in response to the activated recipe change, to define a work cycle that has arrived at the first workstation at that time, for example, a packaging format of 2x2 packages, as the last work cycle to be produced according to the first packaging recipe, and to track its intermittent feed, in particular the changeover point between it and the first subsequent work cycle to be produced according to the second packaging recipe, along the packaging machine or along the packaging line and / or to visualize it using the display device. This allows for tracking of the progress of the recipe change.

[0021] In particular, recipe changes for the packaging machine or packaging line can be activated via the control unit by selecting a stored packaging recipe for a specific packaging type. One variant involves the control unit having an RFID reader, which can read various recipe creations stored on different RFID chips, thereby triggering a recipe change.

[0022] A particular embodiment provides that the device includes at least one VR headset for the operator, functionally connected to the control unit, which allows for the visualization of at least one instruction for the changeover operation of the first and / or the second workstation. Such VR headsets, configured for the packaging machine or packaging line, serve as a portable aid for the operator, enabling them to be instructed using a virtual changeover scenario created for the respective workstations and displayed in response to the respective control steps. The VR headset can thus be used as a virtual changeover assistant for various changeover and / or adjustment operations directly at the respective workstations, without the operator being dependent on the location of the control unit.

[0023] Preferably, the first workstation is configured as a forming station with at least one tool component for producing (deep-drawn) troughs and / or the second workstation is configured as a sealing station with at least one tool component for producing sealed troughs.

[0024] Specifically, the first control step applies to the tooling component of the forming station, and the second control step applies to the tooling component of the sealing station. As soon as the second control step for the recipe change occurs, the operator has already completely reconfigured and / or recalibrated the forming station for the recipe change based on the first control step.

[0025] According to an advantageous embodiment, the packaging machine or packaging line has at least one conveying device which can be controlled by the control unit for the step-by-step transport of the work cycles processed within the first workstation to the second workstation located at a distance from it. At the time when one of the workstations is being retooled and / or reconfigured for a recipe change, the conveying device can be deactivated, and its operation can be resumed after the retooling and / or reconfiguration of the workstation is completed.

[0026] Furthermore, the invention relates to a method for performing a recipe change on an intermittently operating packaging machine or for performing a recipe change on an intermittently operating packaging line, wherein a control device, in response to a recipe change activated on the packaging machine or on the packaging line from a first packaging recipe to another, second packaging recipe, automatically sets at least one process parameter required for this purpose at the first workstation and / or indicates to an operator at least one changeover action of the first workstation by means of a first control step for the production of a work cycle formed in the production direction first within a first workstation according to the second packaging recipe.wherein, in response to the activated recipe change, the control device, by means of a second control step, automatically sets at least one process parameter required at the second workstation and / or indicates to the operator at least one changeover action of the second workstation for the production of the work cycle formed in the production direction first within a second workstation spaced apart from the first in the production direction according to the second packaging recipe.

[0027] According to the invention, after the first control step, the control device only executes the second control step when a work cycle directly preceding the first work cycle formed according to the second packaging recipe, and which was formed last within the first work station according to the first packaging recipe, has advanced from the first work station to the second work station, which is positioned at a distance from the first work station in the production direction, or has at least partially been processed therein. This results in, in particular, a manufacturing process with reduced material waste, leading to increased machine utilization, as well as simplified machine operation by the operating personnel.

[0028] The control device may be configured to perform the first control step when the work step directly preceding the work step to be produced first according to the second packaging recipe, and the work step to be produced last according to the first packaging recipe, has advanced into the first workstation or has at least partially been processed there. Preferably, the first control step is performed when the recipe change is activated and a work step to be produced according to the first packaging recipe, which is located in the first workstation, has been completely processed, for example, fully formed.

[0029] Preferably, the control device has a display device by means of which, based on the first control step, at least one instruction for the changeover action of the first workstation and / or by means of which, based on the second control step, at least one instruction for the changeover action of the second workstation is visualized for the operator.

[0030] The invention is explained in more detail with reference to exemplary embodiments according to the following figures. Specifically, the figures show: Fig. 1 a schematic side view of a packaging machine configured as a thermoforming packaging machine, Fig. 2 a schematic side view of a packaging line, Fig. 3 the packaging line Figure 2 in a top view, and Fig. 4A to 4H A schematically illustrated, step-by-step recipe change, exemplified by a thermoforming packaging machine.

[0031] Identical components are consistently labelled with the same reference symbols in the figures.

[0032] Figure 1 Figure 1 shows a schematic side view of an intermittently operating packaging machine T, configured as a thermoforming packaging machine 1. This thermoforming packaging machine 1 has a forming station 2, a sealing station 3, a cross-cutting unit 4, and a longitudinal cutting unit 5, arranged in this order along a production direction R on a machine frame 6. At the inlet side of the machine frame 6 is a feed roller 7 from which a bottom film 8 is unwound. Furthermore, the thermoforming packaging machine 1 has a transport chain 9 that grips the bottom film 8 and conveys it along the production direction R for each main work cycle.

[0033] In the illustrated embodiment, the forming station 2 is designed as a thermoforming station in which cavities are formed in the base film 8 by thermoforming, for example, using compressed air and / or vacuum. The forming station 2 can be configured such that several cavities M are formed side by side in the direction perpendicular to the production direction R. Downstream of the forming station 2 in the production direction R, a filling section or insertion area 10 is provided in which the cavities M formed in the base film 8 are filled with products. The filling of the cavities M can be carried out manually by an operator.

[0034] The sealing station 3 has a hermetically sealable chamber 3a in which the atmosphere in the recesses M can be evacuated and / or replaced by gas purging with a replacement gas or with a gas mixture before sealing with the top film 12 dispensed from a top film receiver 11.

[0035] The cross-cutting device 4 can be designed as a punch that cuts the bottom film 8 and the top film 12 in a direction transverse to the production direction R between adjacent troughs M. The cross-cutting device 4 operates in such a way that the bottom film 8 is not cut across its entire width, but at least in one edge area remains intact. This allows for controlled onward transport through the conveyor chain 9.

[0036] The longitudinal cutting device 5 can be designed as a knife arrangement with which the lower film 8 and the upper film 12 are cut between adjacent recesses M and at the lateral edge of the lower film 8 in the production direction R, so that individual packages V are present behind the longitudinal cutting device 5.

[0037] The thermoforming packaging machine 1 also has a control unit 13. Its function is to control and monitor the processes taking place in the thermoforming packaging machine 1. A display device 14 serves to visualize and / or influence the process sequences in the thermoforming packaging machine 1 for or by an operator.

[0038] Figure 2Figure 1 shows a packaging line B. Packaging line B comprises a slicing machine 15 for producing individual products, a weighing system 16 for weighing the individual products, a feeding device 17, two loading stations 18, and a tray sealer 19 for sealing with product-loaded trays, which are arranged in this order in the production direction R. The slicing machine 15, also known as a portioner, is designed to slice products, such as ribs, at the entrance to packaging line B. Each rib is weighed by the weighing system 16, arranged into a specific format along the feeding device 17, loaded into trays within the loading stations 18, and then transported to the tray sealer 19, where it is gas-tightly packaged in the trays.

[0039] Figure 3 shows packaging line B Figure 2From a top view. The loading stations 18, arranged side by side, are used to load trays provided therein with products fed into the loading stations 18. Furthermore, the loading stations 18 are designed to transport the product-loaded trays towards the tray sealer 19. An image acquisition system 20, also called a vision system, is positioned at the entrance of the loading station 18 that is the first one arranged in the production direction R.

[0040] The Figures 4A to 4E The schematic representation shows how the concept of a recipe change W according to the invention can take place on the thermoforming packaging machine 1.

[0041] Figure 4A Figure 1 shows thermoforming packaging machine 1, which is set up to produce a first packaging recipe V1. The thermoforming packaging machine 1 is made of... Figure 4A The forming station 2, positioned at the beginning, is the first workstation 21. The sealing station 3 of the thermoforming packaging machine 1 is located in Figure 4Aas the second workstation 22, which is positioned at a distance from the first workstation 21 in the production direction R.

[0042] In Figure 4A It is shown that there are a total of three work cycles A between the first workstation 21 and the second workstation 22. The individual work cycles A can, for example, each have a packaging format of 2x2 packages according to the first packaging recipe V1 and are advanced stepwise in the production direction R according to a main machine work cycle of the thermoforming packaging machine 1. The transport chain 9 can be used for this intermittent transport.

[0043] In Figure 4A For the production of the first packaging recipe V1, the first workstation 21 and the second workstation 22 are equipped with appropriate tool components and / or set with appropriate process parameters.

[0044] In Figure 4BA recipe change W is activated at the control unit 13 of the thermoforming packaging machine 1. According to the recipe change W, the thermoforming packaging machine 1 is to be switched from the first packaging recipe V1 to a different, second packaging recipe V2. Figure 4B This shows that a work cycle A, positioned immediately before the first work station 21, is to be produced as the first work cycle according to the second packaging recipe V2. However, the preceding work cycle A, positioned within the first work station 21, is still produced according to the first packaging recipe V1. A changeover boundary G is thus defined between these two work cycles A.

[0045] The in Figure 4B The activated recipe change W can be initiated by an operator at the control unit 13, for example by pressing a button on a display attached to it.

[0046] Figure 4CThis shows that, in response to the recipe change W activated on the thermoforming packaging machine 1 from the first packaging format V1 to the other, second packaging format V2, a process parameter P required for this purpose is automatically set at the first workstation 21 and / or the operator is notified of at least one changeover action at the first workstation 21 for the production of the work cycle A formed in the production direction R first within the first workstation 21 according to the second packaging format V2. Figure 4C This is exemplified by a warning sign 22. A corresponding warning can be displayed to the operator by means of the display device 14. Alternatively or additionally, a process parameter P1 for the operation of the first workstation 21 according to the packaging recipe V2 can be changed by the control unit 13.

[0047] To produce work cycles A according to the second packaging recipe V2, the packaging process of thermoforming packaging machine 1 may be interrupted for a predetermined changeover or recalibration interval. From then on, the first workstation 21 produces packages according to the second packaging recipe V2. Other workstations on the thermoforming packaging machine 1, positioned downstream of the first workstation 21 in the production direction R, such as the sealing station 3, continue to operate according to the first packaging recipe V1 for the time being.

[0048] Figure 4DThis indicates that the changeover and / or setup process at the first workstation 21 is complete and that the work cycle A, which has moved into the first workstation 21, is being produced according to the second packaging recipe V2; in other words, the first workstation 21 is operating according to the second packaging recipe V2 for the first time. The work cycles A preceding this work cycle A in production direction R, however, continue to be produced according to the first packaging recipe V1.

[0049] Figure 4EThis shows that the changeover limit G has advanced to just before the second workstation 22, meaning that the work cycle A produced first within the first workstation 21 according to the second packaging recipe V2 is immediately before the second workstation 22 and would follow next into the second workstation 22 according to the subsequent main machine work cycle of the thermoforming packaging machine 1. The work cycles A preceding this were still produced according to the first packaging recipe V1.

[0050] Figure 4F shows that in response to the previously reported issue with thermoforming packaging machine 1 Figure 4BThe activated recipe change W for the production of the work cycle A formed first within the second work station 22 according to the second packaging format V2 in the production direction R is automatically set at least one process parameter P2 required for this at the second work station 22 and / or a changeover action of the second work station 22 is displayed to the operator, whereby this occurs when the work cycle A formed last according to the first packaging format V1 in the production direction R has advanced from the first work station 21 to the second work station 22, i.e. the changeover limit G is immediately before the second work station 22.This makes it possible to set up and / or retool the second workstation 22 for the production of the second packaging recipe V2 only when the work cycle A initially formed within the first workstation 21 according to the second packaging recipe V2 has advanced several main machine work cycles and finally arrived at the second workstation 22. Intermediate work cycles A can accordingly be completed according to the first packaging recipe V1.

[0051] Figure 4GThis shows that the second workstation 22 has been switched to the second packaging recipe V2 and is producing for the first time within the second workstation 22 according to the second packaging recipe V2. The work cycles A preceding the first work cycle A produced according to the second packaging recipe V2 are still separated in the subsequent workstations, i.e., in the cross-cutting device 4 and in the longitudinal cutting device 5, according to the first packaging recipe V1.

[0052] In a manner comparable to the first and second workstations 21, 22 described above, the workstations following these, for example the cross-cutting device 4 and the longitudinal cutting device 5, can be adapted step by step, one after the other, for the production of the second packaging recipe V2.

[0053] Figure 4Hshows that the thermoforming packaging machine 1 is fully set up and / or retooled for the production of the second packaging recipe V2. The illustrations of the Figures 4A to 4H The distance tracking can be displayed to the operator via the display device 14, allowing the operator to monitor the progress of a changeover of the thermoforming packaging machine 1 between the first packaging recipe V1 and the second packaging recipe V2. In particular, the distance tracking can indicate the advancement of the changeover limit G, so that the operator can see when and which workstation needs to be reconfigured.

[0054] The recipe change W according to the invention can be used on various packaging machines or packaging lines, in particular on intermittently operating packaging machines or packaging lines.

Claims

1. A device for a packaging process, wherein the device is provided in the form of a step-by-step packaging machine (T), or is configured as a step-by-step packaging line (B), each comprising at least a first workstation (21), at least one second work station (22) mounted at a distance from the first work station (21) in the production direction (R) and at least one control device (13) functionally connected to the first and second work stations (21, 22), which is configured, on the basis of a first control step, in response to a recipe change (W) activated on the packaging machine (T) or on the packaging line (B) from one first packaging recipe (V1) to another, second packaging recipe (V2) for producing a work cycle (A) formed first in the production direction (R) within the first work station (21) in accordance with the second packaging recipe (V2) to set automatically at least one process parameter (P1) required for this at the first workstation (21) and / or to notify an operator of at least one retooling measure of the first work station (21), wherein the control device (13) is further configured, in response to the activated recipe change (W) by means of a second control step for producing the work cycle (A) formed first in the production direction (R) within the second work station (22) in accordance with the second packaging recipe (V2), to automatically set at least one process parameter (P2) required for this at the second work station (22) and / or to notify the operator of at least one retooling measure of the second work station (22), characterised in that the control device (13) is configured to perform the second control step after the first control step at the time when a work cycle (A) directly preceding, in the production direction (R), the work cycle (A) first formed according to the second packaging recipe (V2) and last formed according to the first packaging recipe (V1) within the first work station (21) has advanced from the first work station (21) into the second work station or has been at least partially further processed therein.

2. Device according to claim 1, characterised in that the control device (13) is configured to carry out the first control step when the work cycle (A) preceding directly in the production direction (R) the work cycle (A) to be produced first in accordance with the second packaging recipe (V2) and to be produced last in accordance with the first packaging recipe (V1) has advanced into the first work station (21) or has been at least partially processed further therein.

3. Device according to claim 1 or 2, characterised in that the control device (13) includes a display device (14) by means of which, on the basis of the first control step for the operator, at least one instruction for the retooling measure of the first work station (21) and / or by means of which, on the basis of the second control step for the operator, at least one instruction for the retooling measure of the second work station (22) can be visualized.

4. Device according to any of the preceding claims, characterised in that the control device (13) is configured to define, in response to the activated recipe change (W), a work cycle (A) arriving at that moment within the first work station (21) as the last work cycle (A) to be produced according to the first packaging recipe (V1) and to follow its intermittent advance along the packaging machine (T) or along the packaging line (B) and / or to visualize it by means of the display device (14).

5. Device according to any of the preceding claims, characterised in that the recipe change (W) for the packaging machine (T) or for the packaging line (B) can be activated by means of the control device (13) by an input made thereto for the selection of a packaging recipe of a specific packaging type stored therein.

6. Device according to any of the preceding claims, characterised in that the device is provided with at least one pair of VR goggles for the operator, by means of which at least one instruction for the retooling measure of the first and / or the second work station (21, 22) can be visualised.

7. Device according to any of the preceding claims, characterised in that the first working station (21) is configured as a forming station (2) with at least one tool component for producing trays (M) and the second working station (22) is configured as a sealing station (3) with at least one tool component for producing sealed trays (M).

8. Device according to claim 7, characterised in that the first control step applies to the tool component of the forming station (2) and the second control step applies to the tool component of the sealing station (3).

9. Device according to any of the preceding claims, characterised in that the packaging machine (T) or the packaging line (B) includes at least one transfer device which can be controlled by means of the control device (13) for a step-by-step transport of the work cycles (A) processed within the first work station (21) to the second work station (22) spaced apart from this.

10. A method for carrying out a recipe change (W) on an intermittently operating packaging machine (T) or for carrying out a recipe change (W) on an intermittently operating packaging line (B), wherein a control device (13) sets, in response to a recipe change (W) activated on the packaging machine (T) or on the packaging line (B) from one first packaging recipe (V1) to another, second packaging recipe (V2) for producing a work cycle (A) formed first in the production direction (R) within a first work station (21) in accordance with the second packaging recipe (V2), on the basis of a first control step, automatically at least one process parameter (P1) required for this at the first workstation (21) and / or notifies an operator of at least one retooling measure of the first work station (21), wherein the control device (13) further sets, in response to the activated recipe change (W) by means of a second control step for producing the work cycle (A) formed first in second work station (22), spaced apart from the first work station in production direction (R), in accordance with the second packaging recipe (V2), at least one process parameter (P2) required for this at the second work station (22) and / or notifies the operator of at least one retooling measure of the second work station (22), characterised in that the control device (13) performs the second control step after the first control step at the time when a work cycle (A) directly preceding, in the production direction (R), the work cycle (A) first formed according to the second packaging recipe (V2) and last formed according to the first packaging recipe (21) within the first work station (V1) has advanced from the first work station (21) into the second work station (22), positioned spaced apart from the first work station (21) in production direction (R), or has been at least partially further processed therein.

11. Method according to claim 10 characterised in that the control device (13) carries out the first control step when the work cycle (A) preceding directly in the production direction (R) the work cycle (A) to be produced first in accordance with the second packaging recipe (V2) and to be produced last in accordance with the first packaging recipe (V1) has advanced into the first work station (21) or has been at least partially processed further therein.

12. Method according to claim 10 or 11, characterised in that the control device (13) includes a display device (14) by means of which, on the basis of the first control step for the operator, at least one instruction for the retooling measure of the first work station (21) and / or by means of which, on the basis of the second control step for the operator, at least one instruction for the retooling measure of the second work station (21) is visualized.