Method, computer program product and system for guiding user in process transforms

Abstract

The invention relates to a method (100) for guiding a user when an extrusion system (10) carries out a process change from a processing process (200) for producing a first film material (201) to a subsequent process (210) for producing a second film material (211). The invention also relates to a computer program product and to a system (1).

Description

Technical Field

[0001] The invention relates to a method for guiding a user during a process change of an extrusion plant, a computer program product and a system for guiding a user during a process change. Background Art

[0002] In principle, it is known to use extrusion equipment in the form of film machines to produce different products. In this case, the products usually differ in different recipes. Thus, a series of different orders are processed in succession with different recipes. To switch between two recipes, a change is made from the currently used recipe to the next subsequent recipe. In known solutions, this change is usually carried out manually based on the experience of the machine operator.

[0003] The disadvantage of such solutions is that the quality and, in particular, the time required for changing from one recipe to a subsequent recipe depends solely on the knowledge of the machine operator. Therefore, especially in the case of inexperienced machine operators, high scrap rates can occur during the changeover between recipes. In particular, it is not possible to achieve clear and consistent quality requirements for all subsequent recipe changes in this way. In particular, the possibility of errors cannot be excluded.

[0004] Thus, DE 102015108972 A1 discloses step-by-step guidance of a machine operator during a recipe change. This prevents inexperienced machine operators from adopting incorrect strategies during a recipe change, i.e., an incorrect sequence of the change steps, or significantly reduces the risk of such an incorrect configuration. However, it would be desirable to provide effective assistance to both inexperienced and experienced machine operators during a process change. Summary of the invention

[0005] The object of the present invention is to at least partially eliminate the above-mentioned disadvantages known from the prior art. In particular, the object of the present invention is to better guide the user during process changes of the extrusion equipment, so that the machine operator can understand the processing technology being carried out and at the same time simplify the process change.

[0006] The above object is achieved by a method having the features of claim 1, a computer program product having the features of claim 17 and a system having the features of claim 18. Further features and details of the invention are derived from the respective dependent claims, the description and the drawings. Here, the features and details described with respect to the method according to the invention are obviously also applicable in connection with the computer program product according to the invention and / or the system according to the invention, and vice versa, so that the disclosures of the various inventive aspects are always referred to or can be referred to one another.

[0007] According to a first aspect of the present invention, a method for guiding a user to change an extrusion equipment process from a processing process for producing a first film material to a subsequent process for producing a second film material is provided. The method comprises, in particular, the following method steps:

[0008] - acquiring a set of process parameters of a process for producing the first film material, in particular by means of a control system and / or a sensor device of the extrusion device,

[0009] - determining a target subsequent parameter set of the subsequent process which is assigned to the process parameter set, in particular by calling up the process parameter set from a memory unit of the control system,

[0010] - comparing the process parameter set with a target subsequent parameter set and determining comparison data, in particular by means of the control system, in order to identify deviations of the target subsequent parameter set from the process parameter set,

[0011] - outputting, in particular by means of the control system, display data for jointly displaying a plurality of comparison elements for representing deviations based on the comparison data during the machining process,

[0012] - detecting, in particular by means of the control system, user interactions for controlling the extrusion device, these interactions being used to at least partially or completely adjust the set of process parameters,

[0013] - preferably during the machining process, display data, in particular contrast elements, are updated, in particular by the control system, as a function of an adaptation of the process parameter set.

[0014] The extrusion device can preferably be a film making machine, in particular a film injection machine and / or a film blowing machine. Here, the extrusion device can include one or more extruders for heating, mixing and / or conveying raw materials.

[0015] Preferably, the first and second film materials are designed as plastic films, respectively. The first film material and the second film material may preferably differ from each other in terms of formulation (i.e., in particular material composition) and / or specifications. For example, different raw materials and / or different raw material usage proportions may be used for the first and second film materials. The specifications may preferably refer to the geometric design of the first and second film materials, such as film width and / or film thickness. The product of the processing technology may include a first film product, such as a tubular film and / or a flat film. The product of the subsequent process may include a second film product, such as a tubular film and / or a flat film. Here, the first and second film products may be produced and / or processed in separate film segments or in a continuous manner, respectively. It may be provided that the type of process change is identified by determining whether the process change includes a specification change and / or a material change. Display data and / or comparison elements may be determined based on the type of process change, so as to provide an adjusted operating interface in particular.

[0016] The processing technology and the subsequent process may include respective production orders. It is preferred that the process change is carried out without stopping the extrusion device, so that the processing technology and the subsequent process are connected to each other and / or the film material is produced continuously. The processing technology refers in particular to the good production of the first film material, that is, the production of the first film material meets at least one first film material quality standard, especially with respect to the sale of the first film material. The subsequent process refers in particular to the good production of the second film material, that is, the production of the second film material meets at least one second film material quality standard, especially with respect to the sale of the second film material. A conversion process can be implemented between the processing technology and the subsequent process, during which only material waste is produced, which neither meets the quality standard of the first film material nor the quality standard of the second film material. The conversion process is preferably minimized by the method of the present invention.

[0017] The process parameter set may include one or more process parameters for the process, which come from actual machine data and / or target machine data of the extrusion device, in particular in the form of sensor data and / or control data and / or adjustment data. For example, the process parameter set may include temperature data of the extrusion device and / or material conveying data of the extrusion device, in particular in the form of conveying speed and / or extruder speed. It can be provided that the process parameter set is acquired and preferably updated continuously or intermittently, in particular during the process. The acquisition of the process parameter set preferably takes place in real time during the process.

[0018] The target subsequent parameter set may include one or more target subsequent parameters for a subsequent process, which come from target machine data of the extrusion device, in particular in the form of control data and / or adjustment data. In particular, the target subsequent parameter set may include temperature data of the extrusion device and / or material conveying data of the extrusion device, in particular in the form of conveying speed and / or extruder speed. Therefore, the target subsequent parameter set may include one or more target subsequent parameters, which correspond to one or more process parameters assigned to the process parameter set, but relate to the subsequent process. When determining the target subsequent parameter set, the target subsequent parameter set can be called from a memory unit and / or a database, for example. However, it is also conceivable that the target subsequent parameter set is obtained by user input, in particular at the extrusion device.

[0019] In order to determine the comparison data, for example, the difference between the target subsequent parameter and the process parameter can be calculated. The comparison element can advantageously include a qualitative and / or quantitative representation of the comparison data. For example, the comparison element can include a display of the difference between the target subsequent parameter and the process parameter. But it is also conceivable that the deviation from the comparison data is represented in color by the comparison element in the display data. The common display of the comparison element can refer to the simultaneous display of multiple deviations, especially in the same view. Here, the display data can include a user interface, and the comparison element and the deviation are integrated in the user interface in a graphical manner. When outputting the display data, the display data can be displayed on a display device or sent to the display device, for example. It is conceivable that the output of the display data includes displaying the display data directly on the extrusion device and / or displaying it on the control center. When updating the display data, the display data can be output again. The display data can also include additional information, such as order data and / or recipe data of the first and / or second film material.

[0020] It can be provided that the extrusion device is controlled manually and / or automatically, in particular electronically, in dependence on the user interaction. The detection of the user interaction can be achieved by detecting a user input, in particular at the extrusion device. For example, the user interaction can include a control action and / or a data communication for controlling the extrusion device. In addition, the user interaction can be achieved by detecting a confirmation of the user interaction, in particular at a display device. The adjustment of the process parameter set can here include keeping one or more (preferably all) process parameters of the process parameter set at least partially or completely consistent with the respective corresponding target subsequent parameters of the target subsequent parameter set. In particular, the detection of the user interaction and / or the updating of the display data can be repeated continuously or intermittently.

[0021] Therefore, the method particularly comprises a dynamic process control for user interaction with the extrusion device during the ongoing process in order to prepare for the subsequent process. In this way, the process change, in particular the change time and / or the material consumption can be shortened. By jointly displaying the comparison elements during the process, both experienced and inexperienced users can have a comprehensive understanding of the current process parameter set and the adjustments required for the subsequent process. Through the user interaction, the user can decide which adjustments he makes based on the comparison data in the display data. It can be provided that the display data (in particular the comparison elements) contain a description of the deviation. Thus, inexperienced users can, for example, selectively rely more on the guidance of the display data than experienced users. At the same time, the output of the display data during the process can also provide an overview of the current process, so that the process safety can be ensured before the process change is completed and / or the process ends. In addition, the current adjustment can be continuously checked by updating the display data to see whether it meets the requirements of the process and / or the subsequent process. In this way, incorrect operations and / or unfavorable operating behaviors can be identified to take corresponding countermeasures. In addition, the user can always understand how the user interaction affects other process parameters, so that subsequent user interactions can be adjusted accordingly. By means of the preparatory measures for the process change, the process change can at least partially extend into the machining process, so that the boundary between the machining process and the subsequent process is preferably blurred.

[0022] It can also be advantageously provided in the method of the present invention that the process parameter set and / or the comparison element include material data of the material composition and / or sensor data of the extrusion equipment sensor. The sensor data may, for example, include the motor current value of the motor, the temperature value of the extrusion equipment component and / or the temperature change curve, etc. The sensor data therefore refers in particular to the actual process parameters that can be compared with the target subsequent parameters of the subsequent process. Based on this, the progress of the process transformation of the extrusion equipment can be known at any time. In addition, the sensor data may include image data in particular for identifying the shape of the film bubble. The material data may, for example, include the material type, the material composition (in particular the percentage of the material composition) and / or the material properties (such as the viscosity of the material composition). The material composition may in particular refer to the raw materials of the processing technology. When the process parameter set is compared with the target subsequent parameter set, the purging preparation and / or temperature adjustment required for the subsequent process can be determined by comparing the material data of the processing technology and the subsequent process. The raw material transformation process from the processing technology to the subsequent process can be simplified thereby.

[0023] It is also conceivable that in the method of the present invention, the method comprises the following steps:

[0024] - determining at least one operational suggestion based on the comparison data for adapting a set of process parameters preferably during the machining process to a subsequent process,

[0025] In particular, the operation suggestion is output together with the (preferably updated) display data, in particular through a control system and / or a display device. The operation suggestion can be integrated into the display data and / or can also be displayed as a supplement to the display data. It is conceivable that the operation suggestion is designed as an explanatory content in the display data. For example, the operation suggestion can be presented in text form, or realized by highlighting in the display data. For example, the control element (such as a button) of the operation suggestion can be highlighted in the display data. In addition, the operation suggestion can be output before and / or after the user interaction. In particular, when determining the operation suggestion, the user interaction can be evaluated according to the process conditions of the processing technology and / or subsequent processes. The process conditions can include the quality standards and / or process stability standards of the first and / or second film materials. Therefore, better interaction between the operator and the processing technology can be achieved through the operation suggestion to implement and / or prepare process changes. It can be provided that the operation suggestion includes a process warning. Here, it is preferred to maintain the current configuration of the process parameter set until the user confirms the process warning, so as to prevent in particular erroneous process control and perhaps the process interruption caused thereby. Preferably, the determination of the operating recommendation is carried out in accordance with a target parameter to be optimized, in particular wherein the target parameter comprises the material quantity, the changeover time of the process changeover, the quality standard of the first film material and / or the second film material and / or the process safety when carrying out the process changeover. The material quantity may relate to the material composition for the first and / or the second film material, i.e. in particular the raw material. However, it is also conceivable that the target parameter comprises the material quantity of the film material processed by the extrusion device, i.e. in particular the finished material.

[0026] It can also be advantageously provided in the method of the present invention that the operational recommendations include manual operation and / or extrusion equipment control recommendations. The operational recommendations may in particular refer to instructions for operating the extrusion equipment and / or implementing preparatory work. The manual operation may, for example, include maintenance work on the extrusion equipment, in particular in the form of cleaning work, and / or in the form of emptying at least one filter. In addition, the manual operation may include material acquisition. Therefore, the user can deliver the subsequent film material from the warehouse to the extrusion equipment under the guidance of the operational recommendations, or convert the suction pipe used to supply raw materials to the extrusion equipment. The recommended control operation of the extrusion equipment can preferably be implemented directly through the control system and / or the display device. For example, the comparison data may include a link to the control command, so that the user can interact directly with the extrusion equipment and / or the display data.

[0027] It can also be advantageously provided in the method according to the invention that the method comprises the following steps:

[0028] - Based on the comparison data, in particular by means of a control system and / or a display device, at least one process course for the machining process and / or a subsequent process is planned, in particular wherein the operational recommendations are determined based on one and / or more process courses. A process course may comprise an expected course and / or a forecast of the remainder of the machining process (in particular when planning a process course) and / or a subsequent process. In particular, the process change may be represented by a process course. The process course can advantageously be output together with the display data. The process course may thus form a process plan for the operator. Based on the process course, the influence of the operational recommendations on the process parameters of the process parameter set may also be checked in order to determine the operational recommendations. In particular, a plurality of possible process courses may be simulated when determining the operational recommendations. This makes it possible to identify complex relationships during the machining process and to determine better operational recommendations.

[0029] It is also conceivable in the method according to the invention that the process comprises a time curve of a process parameter set for defining the time change, wherein the output of the display data and / or the determination of the operating recommendations are carried out according to the time curve. By means of the time curve, in particular, the system response of the extrusion device can be represented according to at least a partial adjustment of the process parameter set. For example, the process can include an increase in the temperature of a machine component to a target temperature and / or a material consumption until a specified material level of a hopper and / or a silo is reached. In particular, the time change of individual process parameters of the process parameter set can be represented by the process process. Therefore, in particular, the time can be defined as a uniform scale of the process parameter set. In this way, different process parameters of the process parameter set for process changes can also be represented, and the process of adjusting the process parameter set can be carried out at least partially in parallel and / or in chronological order. It is also conceivable to take into account external events, such as planned shift changes and / or maintenance intervals of the extrusion device, when planning the process, for defining the time change.

[0030] It is also conceivable in the method of the invention that when determining the operation suggestions, a plurality of operation suggestions are determined to define an operation sequence, in particular wherein the operation sequence comprises a time sequence of the operation suggestions. Each of the operation suggestions may here relate to a user interaction operation required for a process change. Here, the operation sequence may at least partially relate to a processing technology. In addition, the operation sequence may extend beyond the processing technology to a subsequent process. The time sequence is preferably determined based on the process progress and / or based on the priority of the operation suggestions. Prioritization may be performed, for example, based on target parameters. By means of priority sorting, it is possible, for example, to avoid first executing a user interaction operation that presupposes another user interaction operation in the processing technology. It is also conceivable, for example, to connect high-cost raw materials last before starting a subsequent process in order to minimize or avoid waste of high-cost raw materials.

[0031] It is also conceivable within the scope of the invention that, in order to define an operation sequence, the time curve of the process parameter set is taken into account when determining the operation suggestion. Depending on the time sequence of the operation suggestions, the operation suggestions can also be integrated into the time curve of the process parameter set to represent the change of the process over time. Preferably, a plurality of operation sequences can be integrated into the process sequentially and / or at least partially in parallel. Based on the time curve of the process parameter set, a time point that is particularly optimal for the target parameters can be determined to output the operation suggestion and the display data. It can therefore be provided that the operation suggestion is output together with the display data based on the time curve of the process parameter set, that is, in particular, the respective operation suggestion and / or the respective operation sequence is only displayed when the respective operation suggestion and / or the respective operation sequence is preset in the planned process. This can simplify the operator's time arrangement of the operation suggestion. In particular, it can be provided that the operator only executes such operation suggestions that have been displayed to the operator by the display data. It can be provided that maintenance intervals for maintaining the extrusion device during the intermediate process are determined for the operation sequence. This can avoid that dust generated during the maintenance period has an adverse effect on the processing technology and / or the production of good products in the subsequent process. The operation sequence can also include operation suggestions that exceed the process change.

[0032] It is also conceivable within the scope of the invention that, in order to define an operating sequence, the operating suggestions are grouped in time so as to form time intervals between the groups. It is particularly conceivable that each operating sequence comprises a group of operating suggestions that need to be executed continuously. It is also conceivable that each operating sequence and / or each operating suggestion is assigned the time required by the operator to execute the corresponding operating sequence and / or operating suggestion, in particular with an additional tolerance. Between the groups, time intervals between the groups can be defined in the process. Thus, it is possible to define batch processing of the operating suggestions by the operator based on the time curve of the process parameter set, so that the operator can, for example, operate other machines in the time intervals between the operating sequences.

[0033] It can also be thought that in the method of the present invention, the process and / or the operation sequence are updated according to the user interaction operation, in particular, the updating of the display data is carried out according to the updated process. Here, the determination of the updated process and / or the operation suggestion can be carried out according to the target parameters of the processing technology, for example in the form of the material consumption to be minimized, the process change time to be minimized, the quality standard of the first film material and / or the second film material and / or the process stability standard. The target parameters can be obtained by user input. Through the updating of the process, the operation suggestion can be adjusted according to the user interaction operation. Thus, the process can be adjusted in the case of unexpected behavior of the operator and / or unexpected response of the system, in particular, in order to achieve an improved or optimal process change with respect to the target parameters, especially under the premise of changes. Therefore, when each operation of the operator affects the process planning, the operator can also be guided to complete the process change in the form of navigation from the macro perspective of the process change.

[0034] It can also be advantageously provided in the method of the present invention that when determining the target subsequent parameter set, the parameter sets of multiple planned processing processes are found, wherein a prioritization process is performed to determine one of the planned processing processes as a subsequent process by comparing the planned processing processes according to at least one target parameter. In particular, like the process process, the target parameter for prioritization can be determined in the form of material consumption to be minimized, process change time to be minimized, quality standards of the first film material and / or the second film material, and / or process stability standards. It is conceivable that multiple target parameters are considered in the prioritization process. The planned processing process can, for example, include an order list of the film material to be processed. Through the prioritization process, the subsequent process can be automatically determined from the planned processing process so that the subsequent process is coordinated with the processing process being carried out. The process change can thus be simplified. In the prioritization process, the process parameter set of the ongoing processing process can be compared with the parameter set of the planned processing process. For example, the similarity of the recipe of the planned processing process and the recipe of the ongoing processing process can be checked in the prioritization process. Thus, material waste in the process change and / or the complexity of the process change for the operator can be reduced.

[0035] It is also conceivable within the scope of the invention that the output of display data and / or the determination of operating recommendations is carried out based on historical data (including process parameter sets and / or user interactions of previous processing technologies) and / or reference data (including at least one process parameter set and / or user interactions of a reference transformation for a process change). The reference transformation can be, in particular, a recorded process transformation for which there is an identical or similar recipe to the current process change. For example, the reference transformation can be manually carried out by an experienced operator (for example, a so-called chief operator) for recording. As a result, other operators with less experience in process changes can be guided to implement the process change based on the reference transformation. For example, the operation sequence and / or the process course can be determined based on the reference transformation. Preferably, the reference data of the reference transformation are output and / or displayed together with the display data (in particular, the comparison element). As a result, the operator can always know how his process control and / or time arrangement compares with the reference transformation. It is also conceivable that the historical data form a reference. Here, the process course can be optimized based on the previous processing technology and / or process change. For example, the process course can be planned based on the majority of historical data and / or based on the average value of historical data. Preferably, the control system can have artificial intelligence, in particular in the form of an artificial neural network. Here, historical data and / or reference data can form training data for the artificial intelligence. Preferably, the process parameter set and the target subsequent parameter set can be provided as input data to the artificial intelligence to obtain a plan of the process and / or at least one operation sequence as output data. In this way, the method can be designed to be self-learning.

[0036] Advantageously, provision can be made in the method according to the invention that execution data of user interactions and / or process changes, in particular based on sensor data, are stored as part of historical data for use in other subsequent processes. The execution data may include material data, a set of process parameters, a set of target subsequent parameters, at least one quality standard and / or other process data. Therefore, user interactions and / or current process changes can be integrated into a database available to the control system, thereby improving in particular the know-how for operating the extrusion device. In particular, when sensor data is stored together with the execution data, the response of the system to user interactions can also be identified and evaluated. In particular, the evaluation can be stored together with the execution data based on the sensor data. Based on the execution data, for example, an artificial intelligence can be trained. Therefore, the method can be designed to be self-learning. It can also be provided that the operator's behavior is analyzed based on the execution data to determine another operation suggestion and / or to update the process based on the execution data.

[0037] Preferably, it can be provided in the method of the present invention that an artificial intelligence is provided, the process parameter set and the target subsequent parameter set are provided as input data to the artificial intelligence to obtain comparative data and / or operation suggestions as output data, and / or the execution data and / or historical data together with the sensor data, the process parameter set and the target subsequent parameter set are provided as training data to the artificial intelligence, so as to provide input data to the artificial intelligence in other subsequent processes and obtain output data. Preferably, the control system (especially the control unit of the control system) can have artificial intelligence, especially in the form of an artificial neural network. A self-learning system can be provided by artificial intelligence. In addition, large amounts of data can be processed by artificial intelligence to optimize process changes.

[0038] In addition, it is conceivable in the method of the present invention to carry out an authentication process for verifying the operator's authority, wherein the output of the display data and / or the determination of the operating suggestions are carried out in accordance with the authentication process. The control system can in particular include user groups with different rights. In the authentication process, the operator itself or a certain authority group can be verified. When verifying the operator, it can be checked whether the operator belongs to one of his authority groups and / or to which authority group the operator belongs. For example, the degree of detail of the operating suggestions in the display data can be determined in accordance with the authentication process. It is also conceivable that the display data can be personalized in accordance with the authority verification. Therefore, the operating suggestions can be personalized to simplify the process changes of the operator. In addition, the recipe and / or the user interface can have a write protection that can be released in accordance with the authentication process. It can also be provided that the process course and / or the reference transformation can be changed in accordance with the operator's authority.

[0039] In addition, it can be advantageously provided in the method of the present invention that the first film material quantity and / or the material component quantity of the input extrusion device are calculated, in particular, the determination of the operation suggestion and / or the planning of the process are carried out according to the calculation. The calculation can be carried out for the executed processing technology part. In particular, the processing technology can be divided into a plurality of process stages, and the calculation is carried out separately for these process stages. For example, these process stages may include a start-up phase for starting the processing technology, good product production, defective product production and / or a phase of different film quality. The first film material quantity and / or the material component quantity of the input can be measured in particular for calculation. The first film material quantity and / or the material component quantity of the input can include weight. The first film material quantity can also be obtained by determining the number of meters of the first film material processed, the first film material area processed and / or the number of rolls processed. The material component quantity of the input can be measured, for example, in one or more extruders of the extrusion device and / or before. But it is also conceivable that the calculation is carried out according to one or more user inputs. For this purpose, an input request can be output to the user.

[0040] Preferably, it can be advantageously provided in the method of the present invention that, preferably in order to determine the operating suggestion, a process inflection point is determined according to the calculation and / or according to the process end point, from which the processing technology cannot be continued while complying with the quality standard and / or process stability standard of the first film material. Preferably, the process change to the subsequent process is enforced in an electronic form after the process inflection point. For example, the extension of the processing technology can be automatically and / or by the operator before the process inflection point, and / or it can be prevented in an electronic manner after the process inflection point. The process inflection point can be output to the operator as information, in particular with the display data. In particular, the process inflection point can be used to prevent, for example, the unknowing production of defective products due to user interaction during the processing technology, which is then converted to good product production by extending the processing technology. It can also be provided that, in particular before the output of the operating suggestion and / or before the user interaction, the operator is required to confirm the process inflection point. This can prevent the process inflection point from being reached without the consent of the operator, in particular by preparatory measures.

[0041] It is also conceivable within the scope of the present invention to determine the material flow in the process change within the extrusion device based on the process parameter set and the target process parameter set, wherein the determination of comparative data, the planning of the process course and / or the determination of the operating recommendations are implemented based on the material flow. When determining the material flow, the material flow can advantageously be calculated and / or determined empirically, especially in analytical and / or numerical form. For example, it is conceivable to extrapolate the material flow observed within a certain period of time. In order to determine the material flow, information about boundary conditions and / or material composition can be provided by the process parameter set and the target process parameter set. For example, it can be determined based on the process parameter set and the target process parameter set whether the process change requires certain operations, such as a purge process, so that the subsequent process is set according to the target process parameter set. These operations can determine the material flow, such as the flow of the purge material. It can be provided that an operator query is performed based on the material flow to inquire about the material composition and / or the time at which the purge material should arrive at the film bubble. It is also conceivable that material data can be determined based on the process parameter set in order to describe in particular the material properties of at least one first material component used in the processing process, and that subsequent material data can be determined based on the target process parameter set in order to describe in particular the material properties of at least one second material component used in the subsequent process instead of the first material component. Thus, in particular material change processes can be simulated in order to at least partially predict the course of the process in advance. This allows for better preparation of comparative data and / or operating recommendations.

[0042] According to another aspect of the invention, a computer program product is provided, which contains instructions which, when executed by a control system, cause the control system to carry out the method of the invention.

[0043] The computer program product of the present invention thus brings the same advantages as those already described in detail with respect to the method of the present invention. The method may in particular be a computer-implemented method. The computer program product may be implemented as a computer-readable instruction code. Furthermore, the computer program product may be stored on a computer-readable storage medium, such as a data disk, a removable drive, a volatile or non-volatile memory or a built-in memory / processor. Furthermore, the computer program product may be provided or made available in the form of a network (e.g. the Internet), from which the user may download it as needed or execute it online. The computer program product may be implemented not only by means of software, but also by means of one or more dedicated electronic circuits (i.e. hardware), or in any hybrid form (i.e. by means of software components and hardware components).

[0044] According to another aspect of the present invention, a user-guided system for process changeover is provided. The system includes an extrusion device for performing a process for producing a first film material. The system also includes a control system for performing the method of the present invention.

[0045] Therefore, the system of the present invention brings the same advantages as those already described in detail with respect to the method of the present invention and / or the computer program product of the present invention. The control system can preferably have a control unit, in particular with a processor and / or a microprocessor, for implementing the method. In addition, the control unit can be integrated into a control device and / or a control center of the extrusion device. The control center can include a server and / or a cloud. It is also conceivable that the control system has a plurality of control units, in particular decentralized control units, for implementing the method. In addition, the control system can include a memory unit and / or a database for providing a target subsequent parameter set, historical data and / or reference data. The system can also include a display device for displaying the display data. For example, the display device can have a display and / or a touch screen. Here, the display device can be advantageously integrated into the extrusion device and / or the control center. It is also conceivable that the display device is a mobile terminal device, such as a smart phone or a pager. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Further advantages, features and details of the invention are derived from the following description of embodiments of the invention in detail with reference to the accompanying drawings. The features mentioned in the claims and in the description may be essential to the invention individually or in any combination. The accompanying drawings schematically show:

[0047] Figure 1 The system of the present invention when implementing the method of the present invention is shown,

[0048] Figure 2a and 2b The components of the extrusion equipment of the system are shown when the process is changed.

[0049] Figure 3Shows the process progress when the process changes.

[0050] Figure 4 showing user interaction of the process for process change,

[0051] Figure 5 Shows the process correction after the system response,

[0052] Figure 6 The method is illustrated schematically in the form of method steps.

[0053] In the following description of several embodiments of the present invention, the same technical features are denoted by the same reference numerals even in different embodiments. DETAILED DESCRIPTION

[0054] Figure 1 A system 1 according to a first embodiment of the present invention is shown, wherein the system 1 is used to guide a user to perform a process change of a processing process 200 when implementing the method 100 according to the present invention, so as to assist in at least one process change from a processing process 200 for producing a first film material 201 to a subsequent process 210 for producing a second film material 211. The processing process 200 for producing the first film material 201 is performed by an extrusion device 10. Figure 2a and 2b As shown, the extrusion device 10 includes a plurality of extruders 11 for extruding plastic material. In addition, the extrusion device 10 has a plurality of feed devices 12, whereby different material components 206 are fed to the extruders 11. Figure 2b As shown, the extrusion device 10 in this embodiment is a film blowing machine, whose film blowing head 14 is used to generate film bubbles, in whose area the first film material 201 is cooled. However, it is also conceivable that the extrusion device 10 of the system 1 is, for example, an injection molding machine.

[0055] When the order for producing the first film material 201 is completed, the process change from the processing process 200 of the first film material 201 to the subsequent process 210 of the second film material 211 is performed without stopping the extrusion device 10. Figure 2b As shown, the process change may include a transition from a first film material 201 to a second film material 211. The transition may be, for example, stepless and / or implemented by executing an intermediate process 200.3 for processing an intermediate material 211.1 to simplify and / or implement the process change. In order to assist the process change from the processing process 200 to the subsequent process 210, the system 1 has a control system 20, in particular with a control unit 23 in the form of a processor and / or microprocessor for executing the method 100. Preferably, a computer program product may be provided, which includes commands that cause the control system 20 to implement the method 100 when it is run by the control system 20. Figure 6 The method steps of method 100 are schematically shown.

[0056] In the method 100, a process parameter set 202 of a processing technology 200 for producing a first film material 201 by an extrusion device 10 is first acquired 101. The process parameter set 202 can preferably include sensor data 207 of a sensor 13 of the extrusion device 10. Therefore, the process parameter set 202 can include actual machine data of the extrusion device 10, which are at least partially measured directly on the extrusion device 10. In addition, the process parameter set 202 can include setting data for the processing technology 200. For example, the process parameter set 202 can include material data of a material composition 206 (i.e., in particular raw materials) and / or control data and / or adjustment data for controlling the extrusion device 10 by a control unit. The processing technology 200 can preferably be completely defined by the process parameter set 202.

[0057] Additionally, in the method 100, a target subsequent parameter set 212 for a subsequent process 210 corresponding to the process parameter set 202 is determined 102. Figure 1 As shown, the process parameter set 202 has in particular a plurality of process parameters 202.1. The target subsequent parameter set 212 may have a corresponding target subsequent parameter 212.1 for each of the process parameters 202.1. Therefore, the subsequent process 210 may be preferably completely defined by the target subsequent parameter set 212. The subsequent process 210 may be acquired by user input and / or called from the memory unit 21 of the control system 20. Advantageously, when determining 102 the target subsequent parameter set 212, parameter sets of a plurality of planned processing processes 200.1 may be determined. The planned processing processes 200 may be stored as an order list in the memory unit 21 of the control system 20. The subsequent process 210 may be determined in this way, that is, a prioritization process is performed, wherein the planned processing processes 200.1 are compared according to at least one target parameter. In this process, one of the planned processing processes 200.1 may be determined as the subsequent process 210 of the current processing process 200, which is as optimal as possible with respect to the target parameters. It is conceivable that when determining 102 the target subsequent parameter set 212 , the order of the planned machining processes 200 . 1 is determined.

[0058] By comparing the process parameter set 202 with the target subsequent parameter set 212, in particular by the control unit 23, in the method 100, comparative data 221 are also determined 103 for identifying deviations between the target subsequent parameter set 212 and the process parameter set 202. For example, a difference between the target subsequent parameter 212.1 and the process parameter 202.1 can be determined in this case, for example, in order to determine control data and / or a system adjustment that enables a process change. The comparative data 221 form the basis for displaying a comparative element 221.1.

[0059] Based on the comparison data 221, at least one process step 203 for the machining process 200 and / or the subsequent process 210 is also planned 104. The process step 203 is Figure 3 Here, the process change particularly includes an intermediate process 200.3, in which an intermediate material 211.1 is processed to achieve a transition from the first film material 201 to the second film material 211. When processing the intermediate material 211.1, for example, the material component 206 of the second film material 211 can be gradually mixed in.

[0060] like Figure 4 As shown, the process 203 also defines, in particular, the time variation of the process parameter set 202 in the time variation curve over time t. Here, the process 203 includes the process of user interaction 233 and the resulting system response, i.e., at least partially adjusting the process parameters 202.1 to adapt to the respective corresponding target subsequent parameters 212.1.

[0061] At least one operating suggestion 232 is determined 105 based on the process progress 203, in particular by the control system 20, based on the comparison data 221. The operating suggestion 232 includes information that recommends a user-interactive operation 233 in the form of a manual operation and / or a control of the extrusion device 10. It can be provided that when determining 105 the operating suggestion 232, a plurality of operating suggestions 232 are determined, in particular based on the process progress 203, for defining an operating sequence 234 and a temporal sequence of the operating suggestions 232. For defining the operating sequence 234, the temporal variation of the process parameter set 202 is taken into account when determining 103 the operating suggestion 232. In this way, an optimal process change sequence can be defined at the time of determining 105 the operating suggestion 232. Advantageously, the operating suggestions 232 for defining the operating sequence 234 are grouped in time, so that a time interval 234.1 is left between these groups. As a result, the operator can perform other work within the time interval 234.1, for example, operate a second extrusion device 10 or assist other operators.

[0062] like Figure 3As shown, it may be advantageous that certain user interaction operations 233 for process changes can be performed already during the processing process 200 and / or prepared by visualization and / or by actions of the operator and / or control system 20, especially when the change conditions of the process change are known based on the comparison data 220. In addition, the user interaction operation 233 can be performed at least partially during the intermediate process 200.3. The user interaction operation 233 can include manual operations and / or control actions for controlling the extrusion device 10. The operation suggestion 232 can respectively include at least one information for recommending at least one user interaction operation 233 for the purge process 236.1, the adjustment 236.2 of the process parameter 202.1 in the form of the temperature of the extrusion device 10 and / or the change 236.3 of the process data 202 for maintaining the stability of the film bubble, especially during the temperature adjustment 236.2. It is also conceivable that the operation suggestion 232 includes a change in the material reserve 12.1 and / or the start-up process of the intermediate process 200.3.

[0063] In order to better predict the process progress 203, a calculation 224 can be performed on the amount of the first film material 201 and / or the amount of the material component 206 introduced into the extrusion device 10. In addition, a material flow 225 in the process changeover within the extrusion device 10 can be determined based on the process parameter set 202 and the target process parameter set 212. Subsequently, an operating recommendation 232 can be determined 105 and / or a process progress 203 can be planned 104 based on the calculation 224 and / or the material flow 225. This allows the process changeover to be at least partially material controlled. In particular, in order to determine 105 the operating recommendation 232, based on the calculation 224 and / or the process end point 204, a process inflection point 209 is determined, from which it is no longer possible to continue the processing process 200 while complying with the quality standard of the first film material 201. The process inflection point 209 can be output by means of display data 231. After the process inflection point 209, the control unit 23 can electronically force a process changeover to a subsequent process 210.

[0064] For user guidance, in the method 100, display data 231 is also output 106 for jointly displaying a plurality of comparison elements 221.1 during the machining process 200, so as to display the deviations based on the comparison data 221. It can be provided that each of the comparison elements 221.1 includes in the display data 231 a separate comparison between a process parameter 202.1 and its corresponding target subsequent parameter 212.1. Preferably, the comparison element 221.1 includes a selection for a comparison between the process parameter 202.1 and its corresponding target subsequent parameter 212.1 and / or a preparation for a comparison between the process parameter set 202 and the target subsequent parameter set 212. For example, the comparison data 221 may include a predetermined selection for a separate comparison between the process parameter 202.1 and the respective corresponding target subsequent parameter 212.1 and / or an indicator calculation for comparison visualization. The display data 231 includes the comparison element 221.1, in particular in a visualized form of the comparison data 221, for example including a graphical element. As Figure 1 As shown, when the display data 231 is output 106, the display data 231 is sent from the control unit 23 of the control system 20 to the display device 22, which performs the joint display of the comparison element 221.1. In addition, the operation sequence 234 and / or the operation suggestion 232 are taken into account in the display data 231. This enables the operator to directly obtain a prompt of which user interaction operation 233 should be performed based on the comparison data 221.

[0065] The output 106 of the display data 231 and / or the determination 105 of the operation suggestion 232 may be performed based on the historical data 250 and / or the reference data 223. The historical data 250 may include the process parameter set 202 and / or the user interaction operation 233 of the previous processing process 200.2. The reference data 223 may include at least one process parameter set 202 and / or the user interaction operation 233 of a reference transformation 251 for a process transformation. The reference transformation 251 may be a process transformation that is or has been performed by an experienced operator (in particular a chief operator). The reference data 223 may in particular include a record of the reference transformation 251.

[0066] Subsequently, a user interaction operation 233 for controlling the extrusion device 10 is acquired 107 in order to at least partially adjust the process parameter set 202. The user interaction operation 233 may include setting an adjusted value for one of the process parameters 202.1 of the process parameter set 202. For example, the user interaction operation 233 can be performed directly on the display device 22 in the form of a user input in order to control the extrusion device 10. However, it is also conceivable that the user interaction operation 233 includes a human operation for controlling the extrusion device 10, such as moving a component, opening a valve, etc. When acquiring 101 the user interaction operation 233, in particular a system response and / or a control instruction of the extrusion device 10 can be identified. For example, the user interaction operation 233 can be acquired in such a way that a change is made to the process parameter set 202 or a target value is set for a process parameter 202.1 of the process parameter set 202.

[0067] Depending on the adjustment of the process parameter set 202 (preferably during the processing process 200), the method 100 also includes an updating 108 of the display data 231. For this purpose, for example, the comparison data 221 can be repeatedly determined 103 using the adjusted process parameter set 202. When the display data 231 is updated 108, it is particularly preferred to update the comparison element 221 in such a way that the system response to the respective user interaction 233 is visualized by the comparison element, such as Figure 4 and 5 As shown. Figure 5 As shown, the process 203 and / or the operation sequence 234 can also be updated according to the user interaction 233. Thus, when unexpected behaviors of the operator and / or unexpected system responses of the extrusion device 10 occur, the process 203 can be adjusted to guide the user to complete the process change as best as possible.

[0068] Provision may be made for an authentication process 237 to be carried out for verifying the authority of the operator, based on which the output 106 of the display data 231 and / or the determination 102 of the operating recommendations 232 are carried out. This allows for an individual configuration of the display data 231. It can also be ensured that the operating recommendations 232 are adapted to the authority level of the authenticated operator. For example, experienced operators may be allowed greater freedom in process changes and / or the level of detail of the operating recommendations 232 may be reduced.

[0069] Furthermore, in particular based on the sensor data 207, the execution data 252 of the user interaction operation 233 (in particular as part of the historical data 250) is preferably stored in the memory unit 22 of the control system 20 for use in other subsequent processes 210, so as to achieve learning effects and improvements based on the execution data 252, in particular to improve the know-how within the enterprise. In particular, the control unit 23 can have an artificial intelligence 24, into which the process parameter set 202 and the target subsequent parameter set 212 are input as input data to obtain the comparison data 221 and / or the operation suggestion 232 as output data. Additionally or alternatively, the execution data 252 and / or the historical data 250 as well as the sensor data 207, the process parameter set 202 and the target subsequent parameter set 212 can be input into the artificial intelligence 24 together as training data for the artificial intelligence 24.

[0070] Thus, the method 100 comprises in particular a dynamic process guide for the user to interact with the extrusion device 10, in particular already at least partially during the ongoing processing 200 in order to prepare for the subsequent process 210. Certain steps can be completed before the end of the processing 200. By means of the preparatory measures for the process change, the process change can be extended at least partially into the processing 200, so that the boundary between the processing 200 and the subsequent process 210 is preferably blurred. By jointly displaying the comparative data 221 during the processing 200, both experienced and inexperienced users can have a comprehensive overview of the current process parameter set 202 and the adjustments required for the subsequent process 210 at any time. In addition, by updating 108 the display data 231, a navigation-like continuous check can be carried out to verify whether the current adjustments meet the requirements of the processing 200 and / or the subsequent process 210. In this case, the operator can be indicated with each update 108 of the display data 231 the best path for the process change. Incorrect operation and / or unfavorable operating behavior can thus be identified so that corresponding adjustments can be made.

[0071] The above description of the embodiments describes the invention only within the scope of examples. Obviously, the individual features of the embodiments can be combined freely with each other as long as it makes technical sense, without exceeding the scope of the invention.

[0072] Reference numerals list

[0073] 1 System

[0074] 10 Extrusion equipment

[0075] 11 Extruder

[0076] 12 Feeding device

[0077] 12.1 Material reserves

[0078] 13 Sensors

[0079] 14 Film blowing head

[0080] 20 Control System

[0081] 21 Memory Cells

[0082] 22 Display device

[0083] 23 Control unit

[0084] 100 Methods

[0085] Acquisition of 101 202

[0086] Determination of 102 212

[0087] 103 221 Identification

[0088] Planning of 104 203

[0089] 105 232 Determination

[0090] Output of 106 231

[0091] 107 233 Acquisition

[0092] 108 230 Update

[0093] 200 Processing Technology

[0094] 200.1 Planning Process

[0095] 200.2 Prior Processing Technology

[0096] 200.3 Intermediate Process

[0097] 201 First Film Material

[0098] 202 Process parameter sets

[0099] 202.1 Process parameters

[0100] 203 Process

[0101] 206 Material composition

[0102] 207 Sensor data

[0103] 210 Subsequent Process

[0104] 211 Second film material

[0105] 211.1 Intermediate Materials

[0106] 212 Target subsequent parameter set

[0107] 212.1 Target follow-up parameters

[0108] 221 Comparative Data

[0109] 221.1 Contrasting elements

[0110] 223 Reference Data

[0111] 224 Accounting

[0112] 231 Display data

[0113] 232 Operational Suggestions

[0114] 233 User Interaction Operations

[0115] 234 Operation sequence

[0116] 234.1 Interval

[0117] 236.1 Purge process

[0118] 236.2 Temperature Adjustment

[0119] 236.3 Variation of 202 to maintain bubble stability

[0120] 237 Certification Process

[0121] 250 Historical Data

[0122] 251 Reference Transformation

[0123] 252 Execution Data

[0124] t time

Claims

1. A method (100) for guiding a user when an extrusion device (10) performs a process change from a processing process (200) for producing a first film material (201) to a subsequent process (210) for producing a second film material (211), comprising: - obtaining (101) a set of process parameters (202) of the processing technology (200) for producing the first film material (201), - determining (102) a target subsequent parameter set (212) of the subsequent process (210) corresponding to the process parameter set (202), - ascertaining (103) comparative data (221) comparing the process parameter set (202) with the target subsequent parameter set (212) to identify deviations between the target subsequent parameter set (212) and the process parameter set (202), - outputting (106) display data (231) for jointly displaying a plurality of contrast elements (221.1) during the machining process (200) in order to display the deviation based on the contrast data (221), - acquiring (101) a user interaction operation (233) for controlling the extrusion device (10) to at least partially adjust the set of process parameters (202), - Updating (108) the display data (231) according to the adjustment of the process parameter set (202).

2. The method (100) according to claim 1, characterized in that: The process parameter set (202) and / or the comparison element (221.1) include material data of a material component (206) and / or sensor data (207) of a sensor (13) of the extrusion device (10).

3. The method (100) according to claim 1 or 2, characterized in that: The method (100) comprises the following steps: - determining (105) at least one operating suggestion (232) for the subsequent process (210) based on the comparison data (221) for preferably adjusting the set of process parameters (202) during the machining process (200), The operation suggestion (232) is output together with the display data (231).

4. The method (100) according to any one of the preceding claims, characterized in that The operation suggestions (232) include human operations and / or suggestions for controlling the extrusion device (10).

5. The method (100) according to any one of the preceding claims, characterized in that The method (100) comprises the following steps: - planning (104) at least one process step (203) for the machining process (200) and / or the subsequent process (210) based on the comparison data (221), In particular, the determination (105) of the operational recommendation (232) is performed based on the process (203).

6. The method (100) according to any one of the preceding claims, characterized in that The process (203) comprises a time curve of the process parameter set (202) for defining a time course, wherein the output (106) of the display data (231) and / or the determination (105) of the operating recommendation (232) are carried out as a function of the time curve.

7. The method (100) according to any one of the preceding claims, characterized in that When determining (105) the operation suggestion (232), a plurality of operation suggestions (232) are determined to define an operation sequence (234), in particular wherein the operation sequence (234) includes a time sequence of the operation suggestions (232).

8. The method (100) according to any one of the preceding claims, characterized in that In order to define the operating sequence (234), the time profile of the process parameter set (202) is taken into account when determining (103) the operating recommendation (232).

9. The method (100) according to any one of the preceding claims, characterized in that The operation suggestions (232) are grouped in time for defining the operation sequence (234), so that time intervals (234.1) can be formed between the groups.

10. The method (100) according to any of the preceding claims, characterized in that The process (203) and / or the operation sequence (234) are updated according to the user interaction operation (233), and in particular, the display data (231) is updated (108) according to the updated process (203).

11. The method (100) according to any one of the preceding claims, characterized in that When determining (102) the target subsequent parameter set (212), parameter sets of multiple planned processing processes (200.1) are determined, wherein a prioritization process is performed, during which these planned processing processes (200.1) are compared based on at least one target parameter to determine one of these planned processing processes (200.1) as the subsequent process (210).

12. The method (100) according to any one of the preceding claims, characterized in that The output (106) of the display data (231) and / or the determination (105) of the operation suggestion (232) are performed based on historical data (250) and / or reference data (223), wherein the historical data includes a process parameter set (202) and / or a user interaction operation (233) of a previous processing process (200.2), and the reference data includes at least one process parameter set (202) and / or a user interaction operation (233) of a reference transformation (251) for the process transformation.

13. The method (100) according to any one of the preceding claims, characterized in that The execution data (252) of the user interaction operation (233) is stored as part of the historical data (250) based on the sensor data (207) for use in other subsequent processes (210).

14. The method according to any one of the preceding claims, characterized in that An artificial intelligence (24) is provided, the process parameter set (202) and the target subsequent parameter set (212) being provided as input data to the artificial intelligence in order to obtain the comparison data (221) and / or the operation suggestion (232) as output data, and / or The execution data (252) and / or the historical data (250) are provided to the artificial intelligence (24) as training data together with the sensor data (207), the process parameter set (202) and the target subsequent parameter set (212).

15. The method (100) according to any one of the preceding claims, characterized in that An authentication process (237) is performed for verifying the operator's authority, wherein the output (106) of the display data (231) and / or the determination (105) of the operation suggestion (232) is performed in accordance with the authentication process (237).

16. The method (100) according to any one of the preceding claims, characterized in that The quantity of the first film material (201) and / or the quantity of the material component (206) fed into the extrusion device (10) is calculated (224), in particular, the determination (105) of the operating suggestion (232) and / or the planning (104) of the process (203) are carried out based on the calculation (224).

17. The method according to any one of the preceding claims, characterized in that In order to determine (105) the operation recommendation (232), a process inflection point (209) is determined based on the calculation (224) and / or based on the process endpoint (204), from which the processing process (200) can no longer be continued while satisfying the quality standards of the first film material (201).

18. The method according to any one of the preceding claims, characterized in that Based on the process parameter set (202) and the target process parameter set (212), the material flow (225) within the extrusion device (10) during the process change is determined, wherein the determination of the comparison data (221), the planning (104) of the process course (203) and / or the determination (105) of the operation recommendation (232) are carried out based on the material flow (225).

19. A computer program product comprising commands which, when executed by a control system (20), cause the control system (20) to perform the method (100) according to one of the preceding claims.

20. A system (1) for guiding a user during a process change, comprising: An extrusion device (10) for performing a processing process (200) to produce a first film material (201), and A control system (20) for carrying out the method (100) according to any one of claims 1 to 18.

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