Procedures for adjusting safety zones

Abstract

Method for adjusting safety zones of a first plant section (1) of a production plant and a second plant section (2) of the production plant, in particular for carrying out a plant interaction, wherein - safety functions are performed by the first part of the plant (1) with regard to a first safety area (11), - safety functions are performed by the second part of the plant (2) with regard to a second safety area (22), - the first part of the plant (1) and the second part of the plant (2) are moved relative to each other into an interaction position and - at least part of the second security area (22) is extended to form an extended second security area over at least part of the first security area (11).

Description

Description

[0001] The present invention relates to a method for adjusting safety zones of a first plant section of a production plant and a second plant section of the production plant, in particular for carrying out plant interaction, and to an arrangement comprising a first plant section for a production plant and a second plant section for the production plant according to the features of the preamble of claim 16.

[0002] Automated manufacturing plants incorporate sophisticated safety systems to protect both operating personnel in the vicinity of the plant and to prevent damage to the plant and the products it produces—referred to as components in this application. A central concept of this safety technology is the safety zone. This safety zone of a plant component is continuously monitored for safety, for example, by sensors, protective barriers, and / or monitored access controls. Simultaneously, in many applications, the movement of components of the plant component beyond the safety zone is prevented.

[0003] If, for example, a sensor detects that a foreign object is within the safety zone, various reactions can be triggered to ensure safety. These reactions can range from slowing down operation to shutting down the system or even a complete emergency stop.

[0004] From DE 10 2015 112 656 A1, a method for monitoring a danger zone by means of a protective zone on a movable machine part with at least one safe optoelectronic distance sensor is known, wherein the safe distance sensor is arranged on the movable machine part, wherein a tool is arranged on the movable machine part, wherein a plurality of distance sensors are arranged modularly and the protective zone is adapted to the tool.

[0005] Further monitoring procedures are known from the publications DE 10 2005 005 906 A1, EP 3 330 740 A1 and DE 10 2004 043 514 A1.

[0006] From DE 10 2014 221 763 A1 it is known to use the sensors already present in the unfinished vehicle for monitoring the safety area during the manufacturing of a vehicle.

[0007] Furthermore, DE 10 2016 107 564 A1 discloses the possibility of connecting the "safety circuits" of a production station and a conveying device located within the production station for the duration of the conveying device's stay within the production station. This is to be understood as meaning that the safety functions of the conveying device's safety area are essentially taken over by the production station.

[0008] In modern manufacturing plants, however, plant interactions are also desired, where the first plant section is not completely enclosed within the second (which is a requirement in DE 10 2016 107 564 A1). An example of a desired plant interaction is the transfer of a semi-finished product or component from a forming machine to an autonomously moving transport device via a handling unit, where the latter has no access to the interior of the forming machine. Simply connecting the safety circuits would not work because, for example, this would not enable a handling unit to extend beyond the safety zone of the forming machine to transfer the semi-finished product or component to the transport device.

[0009] The object of the invention is therefore to provide a method and an arrangement that allow - in the simplest possible way - safety-relevant actions to be carried out between adjacent plant components.

[0010] With regard to the method, this problem is solved by the features of claim 1. This is done by - safety functions are performed by the first part of the plant with regard to a first safety area, - safety functions relating to a second safety area are performed by the second part of the plant - the first part of the plant and the second part of the plant are moved into an interaction position relative to each other and - at least part of the second security area is extended to form an extended second security area, encompassing at least part of the first security area.

[0011] With regard to the arrangement, this is done with the features of claim 16. This is done by the first safety device and the second safety device being configured together to extend at least a part of the second safety area to at least a part of the first safety area, forming an extended second safety area.

[0012] Safety functions encompass all functions designed to enhance safety. Classic examples include monitoring a specific area with sensors and access controls, limiting movement within a safety zone, and triggering specific responses when the safety zone is compromised. As mentioned previously, these responses range from slowed operation and shutdown to a complete emergency stop.

[0013] The safety functions relating to the first safety zone and / or the second safety zone encompass all functions of the first plant section and / or the second plant section, or of the first safety device and / or the second safety device, that serve to ensure safety in the first safety zone and / or the second safety zone. This may include the access controls and restrictions already mentioned.

[0014] However, as mentioned, the safety functions relating to the first safety zone and / or the second safety zone can also refer to the function relating to a predetermined area within which the first plant component and / or the second plant component can be moved – in particular without restriction – in order to avoid, for example, collisions with objects and / or personnel outside the safety zone.

[0015] In particular, the first safety zone and / or the second safety zone can be the area that is monitored, classified as safe by this monitoring, and in which the first part of the plant and / or the second part of the plant can move "freely" (within the scope of the setting or programming).

[0016] Regarding the extension of the second safety area, it should be noted that not all safety functions relating to the second safety area actually need to be extended to the extended second safety area. However, within the scope of the invention, it is provided that at least one of the safety functions relating to the second safety area is extended to the extended second safety area.

[0017] In the following, instead of extending at least a part of the second safety area to at least a part of the first safety area, the expression "the extension of the second safety area" is frequently used to make the text as readable as possible. However, this should not be understood to mean that the entire second safety area (or all safety functions relating to it) must always be extended. Rather, it should always be understood to mean that a part of the second safety area and / or a part of the safety functions can be extended to at least a part of the first safety area according to the invention.

[0018] Particularly preferably, the safety function with respect to the second safety area may be implemented in the form of a limitation of the movements of the second part of the plant - in particular an interaction device of the second part of the plant - within the second safety area and extended to the extended second safety area.

[0019] The fundamental problem, namely that without the measures according to the invention the verification of the first safety zone and the second safety zone during a system interaction can mutually trigger safety measures, is elegantly circumvented by the invention, since, for example, there is only one relevant safety zone for the system interactions, namely the extended second safety zone. The complex so-called "muting systems" (i.e., systems for partially disabling safety functions), which are required in the prior art for interactions between, for example, conveyor belt systems and driverless transport systems, can therefore be essentially eliminated by the invention.

[0020] It should be noted that the extension of the second safety zone to the extended second safety zone can occur shortly before, during, and / or after the first and second plant components move into the relative interaction position. In other words, the second safety zone can be extended when the interaction position has already been reached, or while approaching it.

[0021] The first and second safety devices are components that implement the logic of the safety functions for the first and second safety zones in the first and second parts of the plant, respectively. So-called "safe programmable logic controllers" (PLCs) can be used for this purpose, which meet standardized requirements regarding reliability and redundancy in order to minimize the safety risk.

[0022] The relative movement of the first and second plant components into the interaction position can be achieved by moving the first plant component relative to the environment, by moving the second plant component relative to the environment, and / or by moving both the first and second plant components relative to the environment.

[0023] Further advantageous embodiments of the invention are defined in the dependent claims.

[0024] Particularly preferably, it may be provided that, after the extension of the second safety zone, a plant interaction is carried out – in particular using an interaction device of the second plant section – which can be understood to mean, in particular, a physical interaction between the first plant section and the second plant section. As already mentioned, the plant interaction can, for example, involve the transfer of semi-finished products and components, whereby these terms are to be understood generally and can refer to objects of any complexity. The interaction device can, for example, be designed as a transfer head for picking up components and / or semi-finished products.

[0025] It may be provided that, after the plant interaction, the second plant component resumes the safety functions with respect to the second safety area, and the first plant component and the second plant component are moved out of the interaction position relative to each other.

[0026] The extension of at least part of the second safety area can be reversed after the plant interaction, and the first plant part and the second plant part can be moved out of the interaction position relative to each other after the plant interaction.

[0027] It may be provided that, when extending at least part of the second safety zone, at least some of the safety functions performed by the second part of the system with respect to the second safety zone are transferred to the first part of the system – in particular the first safety device. This can occur before, during, or after the extension of the second safety zone.

[0028] The extended second safety zone can thus be monitored from a single location, which facilitates the implementation of the invention. After the system interaction, the second system component—in particular, the second safety device—can resume the safety functions with respect to the (extended) second safety zone. This resumption of the extension of the second safety zone can occur before, during, or after the handover. By handing back the safety functions of the second safety zone, it is possible to prevent the first safety device of the first system component from being overloaded.

[0029] The first and / or second component of the system can be at least one handling device for a forming machine and / or at least one forming machine itself. Forming machines can include injection molding machines, presses, injection molding machines, and the like. The handling device can, for example, include a robot and / or a conveyor belt.

[0030] It is also preferable to provide that a transport device – preferably one that moves at least semi-autonomously – is used as the second and / or first system component, with the first and / or second safety zone preferably moving along with the transport device. An example of transport devices that move at least semi-autonomously would be so-called automated guided vehicles (AGVs), which are already widely used. Of course, it would also be conceivable, in principle, to equip the transport device with a handling device and / or an interaction device.

[0031] It may be provided that, as part of the plant interaction, a semi-finished product or a component is transferred from the first plant part to the second plant part or from the second plant part to the first plant part.

[0032] In addition to assuming the safety functions with respect to the (extended) second safety area, functions relating to the regulation and / or control of at least one actuator of the second plant section can also be transferred, in particular those actuators that are relevant for plant interaction. Preferably, it can be provided that the first plant section assumes the complete control and / or regulation of the second plant section, that is, it controls or regulates all actuators of the second plant section.

[0033] In particular, this can involve controlling and / or regulating the position, speed and / or acceleration of the transport device.

[0034] It may be provided that the extension of the second safety zone to the extended second safety zone is triggered when the first plant part and / or the second plant part is detected reaching and / or approaching the relative interaction position.

[0035] Reaching and / or approaching the relative interaction position can be achieved by a separate detection device that provides a detection signal. In a simple embodiment, this can be accomplished via a first communication device with short-range capability, particularly NFC capability, on the first system component and a second communication device with short-range capability, particularly NFC capability, on the second system component. NFC capability refers to "Near Field Communication." This standardized communication standard enables easy communication over short distances. Other standards that could be used include RFID or Bluetooth. Detection of the interaction position can be triggered, for example, by enabling communication via the short-range capability.In addition to providing information that the interaction state is (almost) reached, further information, for example regarding the identification of the second part of the system, can also be provided.

[0036] For data exchange between the first and second safety devices, a so-called "secure communication interface" can be provided, which meets the aforementioned standardized requirements regarding reliability and redundancy. An example of a communication protocol to be used would be the so-called "Fail Safe Over EtherCAT" (FSOE) function of the proprietary "EtherCAT" fieldbus system.

[0037] The physical implementation of the secure communication interface (apart from the communication protocol used) can be achieved via various types of connections, specifically wireless (e.g., via radio, inductive, or wireless data transmission standards such as NFC, RFID, or Bluetooth) or wired (e.g., via sliding contacts). The transmitted protocol (e.g., FSOE) can then be transmitted over the existing physical connection, for example, using the black channel principle, and is inherently secure by design.

[0038] It is possible for the second plant section and, consequently, the second safety zone to be configured as separate units. The first plant section is positioned in an interaction configuration between a first sub-section and a second sub-section of the second plant section, and the first safety zone is positioned in an interaction configuration between a first sub-safety zone and a second sub-safety zone of the second safety zone. An example of this would be a so-called bridge configuration of a handling robot, which, in this bridge configuration, connects a forming machine, for example, with another (sub)safety zone, within which, for instance, semi-finished products are prepared or packaging takes place. The system interaction between the handling robot and a transport system can then occur between these two sub-sections.

[0039] Although some overlap may exist between the first and second safety zones, it may be specifically designed that the second safety zone, in the interaction position, is located entirely outside the first safety zone. Conversely, the first safety zone, in the interaction position, may be located at least partially—preferably entirely—outside the second safety zone.

[0040] The first and / or second plant section may include a protective barrier that delineates the first and / or second safety zone. This makes a safety zone easily verifiable because objects and operating personnel can only access the safety zone via defined access points due to the protective barrier.

[0041] It should also be noted that the first safety area and / or the second safety area may have different – ​​preferably contiguous – safety zones, with the safety zones being distinguished by different reactions triggered, for example, by foreign objects in the respective safety zone. For instance, an inner safety zone may be provided, in which the corresponding part of the system is immediately shut down if a hazard is detected within this inner safety zone. In the case of a safety zone arranged around the inner safety zone, the detection of a hazard might, for example, "only" result in a slowed movement of the corresponding part of the system.Within the scope of the invention, it may be provided that this substructure of the first security area and / or the second security area (i.e. the security zones) is also transferred when transferring the security functions according to the invention with respect to at least a part of the second security area.

[0042] For example, to achieve greater freedom of movement for devices in the second part of the plant, the second safety zone may be extended beyond the first. This could also be interpreted as a prior modification (extension) of the first safety zone.

[0043] Additional plant components (besides the first and second plant components) can be used, which perform safety functions with respect to associated additional safety zones, wherein at least a part of the extended second safety zone is extended to at least a part of at least one of the additional safety zones. This additional extension of the extended second safety zone to at least one of the second safety zones (or a part thereof) can occur simultaneously or sequentially. Furthermore, the features disclosed here for the first and second plant components, as well as for the first and second safety zones, can of course also be provided for the additional plant components and / or the additional safety zones.

[0044] Additional safety devices for performing safety functions with respect to further safety zones can communicate and interact with each other in various ways. For example, one safety device can perform the safety functions with respect to all extensions of the second safety zone. Alternatively, the extension can be cascaded, meaning the extended second safety zone can be extended to a third safety zone (managed by a third safety device in a third plant section), and the safety functions can be transferred to the third safety device. The cascade can then be repeated analogously for an extension to a fourth safety zone (and beyond), using, for example, a fourth safety device in a fourth plant section.

[0045] Further advantages and details of the invention will become apparent from the figures and the accompanying figure description. These show: Fig. Figures 1a to 1c illustrate a method according to the invention in a first embodiment. Fig. 2 a schematic representation of an arrangement according to the invention, Fig. Figures 3a to 3c illustrate a further embodiment of a method according to the invention. Fig. 4 a visualization of a driverless transport system as well as Fig. 5. An illustration of a method according to the invention in a further embodiment.

[0046] In the Fig. Figures 1a to 1c illustrate a first embodiment of a method according to the invention by means of schematic representations.

[0047] In this embodiment, a first system component 1 is provided in the form of an autonomous transport device 7, which picks up components 24 produced by a forming machine 5 equipped with a handling device 6 in the form of a (linear) robot. This represents the system interaction between the first system component 1 (transport device 7) and the second system component 2 (forming machine 5 with handling device 6). Depending on the precise design of the embodiment, the handling device 6 itself can also be the second system component 2.

[0048] This is a version without a protective guardrail 23.

[0049] The first safety area 11 of the first plant section 1 (transport device 7) moves with the transport device 7 and is divided into safety zones.

[0050] The second safety zone 22 of the second plant section is defined by the area of ​​the second plant section 2 itself (rectangle designated with reference numeral 22 in the Fig. 1a to 1c). However, from a purely mechanical point of view, the handling device 6 has the ability to move an interaction device 16 beyond this second safety area 22, but is prevented from doing so in normal operation - i.e. when the inventive extension of the second safety area 22 is not in force - by the safety functions of the second part of the system 2 with respect to the second safety area 22.

[0051] In this regard, it should be noted that the so-called enabling mode allows a human operator to override safety zones. The enabling button is designed so that it must always be held in a defined neutral position during activation in order to override the respective safety zone. In the event of unforeseen incidents or hazards, the operator releases the button or presses it down (forcefully). As a result, the system is put into a safe state. In the embodiments shown here, the inventive extension of the second safety zone 22 is only provided outside of enabling mode, i.e., when the second safety zone 22 is in effect.

[0052] Within the safety area 22, the movement of the handling device 6, in particular the interaction device 16, is not restricted (full dynamics).

[0053] Accordingly, the interaction device 16 waits near the boundary of the second safety area 22 for the arrival of the transport device 7, which in Fig. 1a is shown.

[0054] As soon as the transport device 7 is in the interaction position - this is in Fig. As shown in 1b, once the interaction state has been reached, the first communication device 3 with NFC function communicates with the second communication device 4 with NFC function, recognizing that the interaction state has been reached.

[0055] Subsequently, the safety functions relating to the handling device 6 in the second safety zone 22 can be transferred to the transport device 7 (as the first plant component 1). Simultaneously, the second safety zone 22 is extended to also include the first safety zone 11. This allows the handling device 6 to move the interaction device 16 beyond the boundaries of the original second safety zone 22.

[0056] In the present embodiment, this occurs without the movements of the handling device 6 being subject to any restrictions in the extended second safety area (full dynamics). Of course, it would also be possible to impose certain restrictions, i.e., generally speaking, to modify the safety functions with respect to the extended second safety area when the second safety area 22 is extended, in particular to adjust them slightly.

[0057] It is not necessary to extend all safety functions relating to the second safety zone 22 in this way. For example, if there are other movable components, such as additional robots in the second part of the system 2, these safety functions can remain limited to the original second safety zone 22.

[0058] After extending the second safety zone 22 to the first safety zone 11 of the transport device 7, the handling device 6 can move the interaction device 16 into the first safety zone 11 and the plant interaction can be carried out.

[0059] In the present embodiment, the interaction device 16 is a transfer head for a component 24 produced by the forming machine 5 – in this case, an injection molding machine. The produced component 24 is removed from the injection molding machine and waits at the transfer head in the Fig. The component 24 is placed on the transport device 7 in the position shown in Figure 1b and classified as safe. As soon as the transport device 7 arrives in the interaction position, which could also be referred to here as the pickup position, the handling device 6 places the component 24 onto the transport device 7. This is shown in Figure 1b. Fig. 1c shown schematically.

[0060] Alternatively or additionally, the transport device 7 could of course also deliver a semi-finished product, e.g. for further use in the forming machine 5.

[0061] The interaction device 16 is then moved back into the original second protection zone 22. Furthermore, the extent of the second protection zone 22 is reduced, and the safety functions relating to the second safety zone 22 are transferred back to the second part of the system 2, in particular to a second safety device 9 thereof.

[0062] Subsequently, the transport device 7 can transport the component 24 to the desired location.

[0063] In Fig. 2 is a plant interaction similar to that from the Fig. 1a to 1c are shown in more detail, but still schematically.

[0064] The first plant part 1 (driverless transport system) formed by a transport device 7 is in the interaction position relative to the second plant part 2.

[0065] The first safety zone 11 of the transport device 7 and the second safety zone 22 of the second part of the plant 2 are shown. In the present embodiment, a protective barrier 23 is provided at the boundary between the first safety zone 11 and the second safety zone 22.

[0066] In this embodiment, the first safety zone 11 and the second safety zone 22 have no overlap whatsoever. The boundary between the two zones is defined in Fig. 2 indicated by a vertical dashed line.

[0067] The second safety zone 22 could also include only the area of ​​the handling device 6, or it could include further devices and / or areas in addition to the forming machine 5 and the handling device 6.

[0068] A movement device 26 is provided for the movement of the transport device.

[0069] As soon as the transport device 7 arrives in the interaction position shown, it is detected by means of the first communication device 3 on the transport device 7 together with the second communication device 4 on the second part of the system 2, which together form the detection device 13.

[0070] Subsequently, the first safety device 8 of the transport device 7 (first plant section 1) communicates with the second safety device 9 of the second plant section 2 via a secure communication interface 14. In this way, safety functions for the movement of the handling device 6 with respect to the second safety zone 22 are transmitted to the first safety device 11 for perception. At the same time, the second safety zone 22 is extended to the first safety zone 11, which allows the interaction device 16 to move into the first safety zone 11, which in Fig. 2 is shown schematically.

[0071] Additionally, data for monitoring and verifying the safety function (diagnostic coverage) can be transmitted between the two system components. This data can be transmitted either securely or via a non-secure communication interface 15 (e.g., EtherCAT).

[0072] In this context, “not safe” does not mean that the relevant functions are “unsafe”, but merely that the requirements regarding reliability and redundancy are not present to such an extent that the relevant standards for safety functions would be met.

[0073] The first safety device 8, the second safety device 8, the secure communication interface 14 and the non-secure communication interface 15 are in Fig. 2 shown purely schematically.

[0074] The second part of the system 2 consists of an injection molding machine 5 together with a handling device 6 in the form of a six-axis robot.

[0075] The handling device 6 has an interaction device 16 in the form of a transfer head, by means of which it places a component 24 in a storage area 25 provided for this purpose on the transport device 7. The interaction device 16 is then moved back to the original second safety area 22. Afterwards, the transfer of the safety functions with respect to the second safety area 22 and the extension of the second safety area can be reversed, and the transport device 7 can transport the transferred component away.

[0076] The embodiment according to the Fig. 3a to 3c is to a certain extent analogous to that from the Fig. 1a to 1c, whereas in contrast, the second plant section 2 is essentially divided into two parts. A first sub-plant section 17 is formed by an arrangement which, in the embodiment according to the Fig. 1a to 1c form the second plant section 2 – essentially the area of ​​the forming machine 5. A second sub-plant section 18 is separated by a protective barrier 23. A handling device 6 in bridge design bridges the gap between the two sub-plant sections. Accordingly, the second safety zone 22 in this embodiment is also divided into two parts and consists of the first sub-safety zone 19, which, analogous to the second safety zone 22, is divided into the Fig. 1a to 1c, and a second sub-safety area 20, which is delimited by the protective barrier 23. The first sub-safety area 19 and the second sub-safety area 20 together form the second safety area 22. Within this area, the handling device 6 can move the interaction device 16 without dynamic restrictions (full dynamics).

[0077] So how does that work? Fig. As can be seen from 3a to 3c, the first sub-safety area 19 and the second sub-safety area 20 are spatially separated from each other, so that the interaction device 16 cannot in principle move from the first sub-safety area 19 to the second sub-safety area 20 and vice versa ( Fig. 3a). This is prevented by a corresponding safety function, since safety is not initially guaranteed in the space between.

[0078] The passageway located between the two sub-safety areas can serve to allow operating personnel to move freely to the machine, for example to perform operating actions, even while the second part of the plant 1 is in operation and producing.

[0079] In order for the interaction device 16 to be able to move between the sub-plant areas, this was solved in the prior art with relatively elaborate safeguards, e.g. in the form of a mechanical overrun protection.

[0080] In the present embodiment, this is no longer necessary. When the second system component 2 – not necessarily a transport device 7 – is in the interaction position, the second safety zone 22 is extended to the first safety zone 11 and beyond ( Fig. 3b), so that the extended second safety area forms a connection between the first sub-safety area 19 and the second sub-safety area 20. This allows the interaction device 16 to move between the first sub-plant section 17 and the second sub-plant section 18, e.g., to transport components and / or semi-finished products between the sub-plant sections, in principle independently of any actual (real physical) plant interaction with the first plant section 1.

[0081] In Fig. Figure 4 visualizes an autonomously moving transport device 7 (driverless transport system). In particular, various, nested safety zones – i.e., the substructure of the first or second safety area – can be identified. These are labeled with reference symbols 27, 28, and 29.

[0082] In the embodiment according to Fig. In addition to the first plant section 1 and the second plant section 2, a third plant section 30 and a fourth plant section 40 are present. In this embodiment, the third plant section 30 and the fourth plant section 40 are also designed as autonomous transport devices 7, wherein the interaction device 16 can interact with all plant sections (for example, picking up and putting down various objects).

[0083] Of course, embodiments of the invention are also conceivable in which the third plant section 30 and the fourth plant section 40 are formed from any combination of different or identical plant sections. For example, a total of two forming machines and two autonomous transport devices 7 could be present.

[0084] In the execution according Fig.5. The second security area 22 will be extended not only to the first security area 11 but also to the third security area 33 and the fourth security area 44 and beyond.

Claims

[1] Method for adapting safety areas of a first part (1) of a production plant and a second part (2) of the production plant, in particular for carrying out a plant interaction, wherein - the first part of the system (1) performs safety functions in relation to a first safety area (11), - the second part of the system (2) performs safety functions in relation to a second safety area (22), - the first system part (1) and the second system part (2) are moved relative to each other into an interaction position and - at least a part of the second security area (22) is extended to at least a part of the first security area (11) to form an extended second security area. [2] Method according to claim 1, characterized bythat after the extension of at least part of the second security area (22) a system interaction is carried out. [3] Method according to claim 2, characterized by that, within the scope of the system interaction, a semi-finished product or a component is transferred from the first system part (1) to the second system part (2) or from the second system part (2) to the first system part (1). [4] Method according to claim 2 or claim 3, characterized by that the extent of at least one part of the second safety area (22) is withdrawn after the system interaction and the first system part (1) and the second system part (2) are moved out of the interaction position relative to one another after the system interaction. [5] Method according to one of the preceding claims, characterized bythat when expanding at least part of the second safety area (22), at least part of the safety functions performed by the second system part (2) with respect to the second safety area (22) are transferred to the first system part (1). [6] Method according to claim 5, characterized by that the second system part (2) takes back the safety functions with respect to the second safety area (22) after the system interaction. [7] Method according to claim 5 or 6, characterized by that with the assumption of the safety functions in relation to at least one part of the second safety area (22) from the first part of the system (1) additionally a control and / or regulation of at least one actuator - preferably all actuators - of the second part of the system (2). [8] Method according to one of the preceding claims, characterized bythat at least one handling device (6) for a shaping machine (5) and / or at least one shaping machine (5) is used as the first part of the system (1) and / or as the second part of the system (2). [9] Method according to claim 8, characterized by that the at least one handling device (6) includes a robot and / or a conveyor belt. [10] Method according to one of the preceding claims, characterized by that a transport device (7) - preferably moving at least partially autonomously - is used as the second system part (2) and / or as the first system part (1), wherein the first safety area (11) and / or the second safety area (22) is preferably moved along with the transport device (7). [11] Method according to claim 6 and claim 10, characterized bythat within the scope of the control and / or regulation of the at least one actuator, a control and / or regulation of a position, a speed and / or an acceleration of the transport device (7) is carried out. [12] Method according to one of the preceding claims, characterized by that the extension of at least one part of the second safety area (22) is triggered when reaching and / or approaching the relative interaction position of the first system part (1) and / or the second system part (2) is detected. [13] Method according to claim 12, characterized by that a first communication device (3) with short-range function on the first system part (1) and a second communication device (4) with short-range function on the second system part (2) are used to detect the reaching of and / or approaching of the relative interaction position. [14] Method according to one of the preceding claims, characterized by that the second security area (22) is extended beyond the first security area (11). [15] Method according to one of the preceding claims, characterized by that further system parts (30, 40) are used which perform safety functions in relation to associated further safety areas (33, 44), wherein at least a part of the extended second safety area (22) is extended to at least a part of at least one of the further safety areas (33, 44). [16] Arrangement comprising a first plant part (1) for a production plant and a second plant part (2) for the production plant, in particular operated according to a method according to one of claims 1 to 15, wherein - the first part of the system (1) has a first safety device (8) for performing safety functions in relation to a first safety area (11), - the second part of the system (2) has a second safety device (9) for performing safety functions in relation to a second safety area (22), - the first system part and / or the second system part has a movement device (26) for moving the first system part and / or the second system part into a relative interaction position and - a detection device (13) is provided for providing a detection signal when the interaction position is reached, characterized by that the first safety device (8) and the second safety device are together designed to extend at least a part of the second safety area (22) to at least a part of the first safety area (11) to form an extended second safety area. [17] Arrangement according to claim 16, characterized bythat an interaction device (16) is provided for carrying out a system interaction between the first system part (1) and the second system part (2). [18] Arrangement according to claim 16 or 17, characterized by that a secure communication interface (14) is provided for data exchange between the first safety device (8) and the second safety device (9). [19] Arrangement according to one of claims 16 to 18, characterized by in that the second system part (2) and correspondingly the second safety area (22) are designed to be divided, wherein the first system part (1) is arranged in the interaction position between a first sub-system part (17) and a second sub-system part (18) of the second system part (2) and the first safety area (11) is arranged in the interaction position between a first sub-safety area (19) and a second sub-safety area (20) of the second safety area (11). [20] Arrangement according to one of claims 16 to 19, characterized by that the first safety area (11) in the interaction position, but before the extension of at least part of the second safety area (22), is located at least partially - preferably completely - outside the second safety area (22). [21] Arrangement according to one of claims 16 to 20, characterized by that the first part of the system (1) and / or the second part of the system (2) includes a protective barrier (23) delimiting the first safety area (11) and / or the second safety area (22).

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