EP4584074A1 - Verfahren zur unterstützung eines prozesswechsels, computerprogrammprodukt sowie system - Google Patents
Verfahren zur unterstützung eines prozesswechsels, computerprogrammprodukt sowie systemInfo
- Publication number
- EP4584074A1 EP4584074A1 EP23771807.7A EP23771807A EP4584074A1 EP 4584074 A1 EP4584074 A1 EP 4584074A1 EP 23771807 A EP23771807 A EP 23771807A EP 4584074 A1 EP4584074 A1 EP 4584074A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parameter set
- manufacturing process
- data
- extrusion device
- subsequent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/9298—Start-up, shut-down or parameter setting phase; Emergency shut-down; Material change; Test or laboratory equipment or studies
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32135—APC advanced process control applications
Definitions
- the invention relates to a method for supporting a process change, a computer program product, and a system.
- the extrusion device can advantageously be a film machine, in particular a cast film machine and/or a blown film machine.
- the extrusion device can include one or more extruders to heat, mix and/or convey raw material.
- the first and second film material are each designed as a plastic film.
- the first film material and the second film material can preferably be in one recipe, i.e. H. in particular a material composition, and/or in a format.
- different raw materials and/or different proportions of raw materials can be used for the first and second film material.
- the format can preferably be a geometric design, such as: B. a film width and / or film thickness, of the first and second film material can be understood.
- a production result of the manufacturing process can be a first film product, e.g. B. a tubular and/or flat film
- a production result of the subsequent process can be a second film product, e.g. B. include a tubular and/or flat film.
- the first and second film products can each be produced and/or processed in individual film sections or contiguously.
- the manufacturing process and the subsequent process can each include a manufacturing order.
- the process change can preferably take place without stopping the extrusion device, so that the manufacturing process and the subsequent process merge into one another and/or film material is produced permanently.
- the manufacturing process is understood in particular to mean a good production of the first film material, ie a production of the first film material that meets at least one quality criterion for the first film material, in particular for the sale of the first film material.
- the subsequent process is understood in particular to mean good production of the second film material, ie a production of the second film material that meets at least one quality criterion for the second film material, in particular for the sale of the second film material.
- a changeover process can be carried out between the manufacturing process and the subsequent process in which only material scrap is produced that neither meets the quality criterion for the first film material nor the quality criterion for the second film material.
- the changeover process is preferably minimized by the method according to the invention.
- the process parameter set can include one or more process parameters of actual machine data and/or target machine data of the extrusion device, in particular in the form of sensor data and/or control and/or regulation data, of the manufacturing process.
- the process parameter set can include temperature data of the extrusion device and/or material conveying data of the extrusion device, in particular in the form of a conveying speed and/or an extruder speed. It can be provided that a continuous or discontinuous control and/or regulation of the extrusion device is carried out by the process parameter set when controlling the extrusion device during the manufacturing process.
- the process parameter set can be transferred from the control system to the extrusion device, in particular to components of the extrusion device.
- an influence of the adaptation on the manufacturing process is preferably evaluated and the preparatory measure is determined depending on the influence of the adaptation on the manufacturing process.
- the adaptation can be varied in order to optimize the preparation process, particularly with regard to the influence of the adaptation on the manufacturing process.
- the planning of the preparation process is carried out depending on a target variable, in particular to be optimized, in particular where the target variable is a quantity of material, a change time of the process change, a quality criterion for the first film material and / or the second film material and / or a process reliability when carrying out the Process change includes.
- the amount of material can relate to a material ingredient, ie in particular a raw material, for the first and/or second film material.
- the target size comprises an amount of material of a film material produced by the extrusion device, ie in particular a starting material.
- a limit parameter set for limiting the adaptation of the process parameter set is determined.
- the limit parameter set can e.g. B. be defined based on a quality criterion for the first film material.
- a limit parameter and/or a limit range can preferably be defined for each process parameter.
- the limit parameter set can be determined.
- the limit parameter set can be provided and/or retrieved from a storage unit.
- the limit parameter set, e.g. B. is calculated based on a calculation model for the extrusion device and/or the manufacturing process.
- the method in particular in the form of a method step, comprises:
- the process goal can e.g. B. include an amount of the first film material to be produced.
- the process goal can have a correlation to one or more quality criteria of the first film material and/or a process stability of the manufacturing process. It is therefore conceivable that the process goal includes a certain amount of a first film quality and a certain amount of a second film quality of the first film material.
- the amount of the first film material can, for. B. be specified in weight and / or in wraps produced.
- material data from the manufacturing process for producing the first film is preferably recorded.
- the material data may include input data of a raw material and/or output data of a produced quantity of the first film material.
- the material data can include a material type, a material composition, in particular with percentages of material ingredients, and / or material properties, such as. B. a viscosity of the material ingredients.
- the material ingredients can be understood to mean, in particular, raw materials from the manufacturing process.
- a rinsing process is required to set up the subsequent process based on the target process parameter set.
- These actions can affect the flow of materials, e.g. B. a flushing material.
- material data in particular for depicting a material behavior, of at least one first material ingredient used in the manufacturing process, and on the basis of the target process parameter set, subsequent material data, in particular for depicting a material behavior, of at least one second material ingredient used in the subsequent process instead of the first material ingredient is determined can be.
- the material progression can therefore be simulated in particular in order to at least partially calculate in advance whether the process goal will be achieved. This allows the comparison data and/or the recommendation for action to be prepared in an improved manner.
- the preparatory measure involves automatically controlling the extrusion device to carry out the at least partial adjustment of the process parameter set during the manufacturing process, i.e. H. especially before the process is completed.
- the control system can send a signal to the extrusion device for controlling and/or regulating the extrusion device for the manufacturing process.
- the control signal can include the adjustment of the process parameter set, in particular in the form of target process parameters and/or target curves of process parameters.
- an assessment of material sections of the first film material produced is carried out with regard to a quality criterion of the first film material and, in order to predict the fulfillment of the process goal, it is checked which of the material sections meet the quality criterion.
- the material sections can relate to different phases of the manufacturing process.
- the phases of the manufacturing process can include an initialization process of the manufacturing process, e.g. B. in the form of starting up the extrusion device and / or good production.
- the material sections can be divided into batches of the first film material.
- a film quality of the first film material can preferably be measured.
- a process turning point is determined based on the balancing and/or based on the process completion, from which a continuation of the manufacturing process in compliance with a quality criterion and / or a process stability criterion of the first film material is no longer possible.
- the quality criterion can be the quality criterion of the material sections.
- the process change to the subsequent process is forced to be carried out, in particular electronically.
- an extension of the manufacturing process can be initiated automatically and/or by an operator before the process turning point and/or can be prevented, in particular electronically, after the process turning point.
- the process turning point can be used as information for an operator be issued.
- the process turning point can prevent e.g. B. due to manual user interaction during the manufacturing process, poor production occurs unnoticed, which then changes back into good production due to a subsequent extension of the manufacturing process.
- confirmation of the process turning point by an operator is expected before the preparatory measure is carried out. This can prevent the process turning point from being reached without the consent of the operator, in particular through the preparatory measure.
- the method includes:
- the preparatory measure is interrupted and/or a countermeasure is carried out if it is determined based on the sensor data that the process condition is not met.
- the sensor data can include, for example, motor current values of an electric motor, temperature values and/or a temperature curve on a component of the extrusion device and/or the like. This allows you to see at any time how far the process change has been implemented on the extrusion device.
- the sensor data can include image data from a camera, in particular for detecting a bubble shape.
- the process condition may include maintaining a bubble shape in order to prevent film tearing and thus an interruption of the manufacturing process. Monitoring can thus be carried out using the sensor data in order to be able to control the influence of the preparatory measure on the manufacturing process.
- the method comprises:
- Determining the subsequent process based on a process collection for the production of different film materials by analyzing the process collection based on the process parameter set of the manufacturing process with regard to the at least partial adaptation of the process parameter set.
- a target variable for determining the subsequent process can be set in the form of a material consumption to be minimized, a process change time to be minimized, a quality criterion of the first and/or second film material and/or a process stability criterion. It is conceivable that several target variables are taken into account when determining the subsequent process.
- the process collection can include several planned manufacturing processes, for example in the form of an order list of film materials to be manufactured.
- the subsequent process can be automatically determined from the planned manufacturing processes in order to coordinate the subsequent process with the ongoing manufacturing process. This can simplify the process change.
- a parameter comparison of the process parameter set of the current manufacturing process can be carried out with parameter sets of the planned manufacturing processes.
- the recipes of the planned manufacturing processes can be checked during the prioritization process for similarity to the recipe of the ongoing manufacturing process.
- the process collection can be sorted to determine the subsequent process in order to determine an order of the manufacturing processes.
- reference data of at least one reference change and/or a process history of previous manufacturing processes are provided for the ongoing manufacturing process, with the planning of the preparation process and/or the calculation of the process completion being carried out depending on the reference data.
- the reference change can in particular be a recorded process change, in particular in which the same or similar recipes were present compared to the current process change.
- the reference change can be carried out by an experienced operator, such as. B. a so-called lead operator, can be carried out manually for recording. This allows other operators who are less experienced with the process change to be guided by the reference change to execute the process change.
- the control system can have artificial intelligence, in particular in the form of an artificial neural network.
- the reference data can form training data for artificial intelligence.
- implementation data of the preparatory measure are stored as part of the process history to make them available for further subsequent processes.
- the implementation data can include the material data, the process parameter set, the target subsequent parameter set, the at least one quality criterion and/or further process data.
- the preparatory measure and/or the current process change can thus be incorporated into the database available to the control system and, in particular, the know-how of the operation of the extrusion device can be improved.
- a system reaction to the preparatory measure can also be recognized and evaluated.
- the evaluation based on the sensor data can be saved with the implementation data.
- the method can therefore be designed to be self-learning.
- control system in particular a control unit of the control system, can have artificial intelligence, in particular in the form of an artificial neural network.
- Artificial intelligence can create a self-learning system.
- artificial intelligence can process large amounts of data in order to optimize the process change.
- the control system can preferably have a control unit, in particular with a processor and/or microprocessor, for carrying out the method.
- the control unit can be integrated into a control unit of the extrusion device and/or into a control center.
- the control center can include a server and/or a cloud.
- the control system has several control units, in particular arranged in a distributed manner, for carrying out the method.
- the control system can include a storage unit and/or a database for providing the target follow-up parameter set.
- FIG. 1 shows a system according to the invention when executing a method according to the invention
- Figure 3 shows a process flow during the process change
- Figure 5 shows the process in a schematic representation of process steps.
- the identical reference numbers are used for the same technical features in different exemplary embodiments.
- a computer program product may be provided that includes instructions that, when executed by the control system 20, cause the control system 20 to execute the method 100.
- Process steps of the process 100 are shown schematically in Figure 5.
- the method 100 first involves controlling 101 of the extrusion device 10 with at least one process parameter set 202.
- the process parameter set 202 in particular includes one or more process parameters 202.1 of actual machine data and/or target machine data of the extrusion device 10, in particular in the form of sensor data 207 and/or control and/or regulation data, for the manufacturing process 200.
- the process parameter set 202 can in particular be defined at least partially based on a recipe for the first film material 201.
- a current status of the extrusion device 10 and the manufacturing process 200 is represented by the process parameter set 202.
- the first film material 201 can be produced at least in sections.
- the method 100 also involves planning 105 of a preparation process 220 to prepare the subsequent process 210 for at least partially adapting the process parameter set 202.
- the preparation process 220 is shown in FIG and/or automatic change actions 236 to carry out the process change.
- the preparatory measure 230 can z. B. at least one or more changing actions 236 for a rinsing process 236.1, an adjustment 236.2 of a process parameter 202.1 in the form of a temperature of the extrusion device 10 and / or a change 236.3 of the process parameter set 202 to obtain bubble stability of a film bubble, in particular during the adjustment of the temperature.
- the preparatory measure 230 includes a change to a material supply 12.1 and/or a starting process for the intermediate process 200.3.
- some changing actions 236 can be carried out and/or prepared before the manufacturing process 200 is completed.
- at least one preparatory measure 230 for executing the preparation process 220 for the process change can be defined.
- the process parameter set 202 can be at least partially adapted to the assigned target subsequent parameter set 212. It is therefore conceivable that the process parameter set 202 includes temperature data of the extrusion device 10 and/or material conveying data of the extrusion device 10, in particular in the form of a conveying speed and/or an extruder speed, the adjustment of which is determined during the preparation process 220.
- the first film material 201 can continue to be produced even if individual process parameters 202.1 are already changed. Therefore, when planning 105 of the preparation process 220 for the process parameter set 202 of the Manufacturing process 200 preferably determines a limit parameter set 222 to limit the adaptation to the target subsequent parameter set 212.
- the limit parameter set 222 can, for example, be taken from predetermined process data of the manufacturing process 200.
- a process completion 204 of the manufacturing process 200 is preferably pre-calculated depending on the process parameter set 202. This makes it possible, for example, to determine at what point in time the adaptation of the process parameter set 202 should be completed in order to begin the next phase of the process change and/or the subsequent process 210 after the adaptation.
- a determination 104 of a process goal 205 of the manufacturing process 200 for producing the first film material 201 can first be carried out.
- the process goal 205 can e.g. B. based on order data for the manufacturing process
- the process completion 204 can then be precalculated depending on the process goal 205 and the at least partial adaptation of the process parameter set 202 to the assigned target subsequent parameter set 212.
- the process completion 204 can be dynamically coordinated with the order-related boundary conditions in the form of the process goal 205 and/or the process-related planning of the adjustment of the process parameter set 202.
- the method 100 also carries out an accounting 224 of a produced quantity of the first film material 201 and/or a quantity of a material ingredient 206 introduced into the extrusion device 10.
- material data in particular weight data, volume data, delivery data and/or the like, can be measured on the extrusion device 10.
- the balancing 224 is taken into account in particular when planning 105 the preparation process 220 in order to enable the adjustment to be scheduled and/or to define an optimal time for the adjustment.
- a product-related analysis of the balanced quantity can also be realized in that for the balancing 224 an assessment of material sections of the first film material 201 produced with regard to a quality criterion of the first film material
- the Preparation process 220 can also be used to determine a material flow 225 within the extrusion device 10 for the process change depending on the process parameter set 202 and the target subsequent parameter set 212.
- the material flow 225 may represent a movement of a material boundary between two successive raw materials 206 in the extrusion device 10. This means that the process change can be at least partially material-controlled.
- a process turning point 209 is determined based on the balancing 224 and/or based on the process completion 204, from which a continuation of the manufacturing process 200 while maintaining a quality criterion of the first film material 201 is no longer possible.
- the process turning point 209 can be output by the display device 22.
- reference data 223 of at least one reference change 251 can also be provided for the ongoing manufacturing process 200.
- the reference change 251 can be a process change that is or was carried out by an experienced operator, in particular a lead operator.
- the reference data 223 can in particular include a recording of the reference change 251. Additionally or alternatively, the reference data 223 can include a process history 250 of previous manufacturing processes 200, which is retrieved from the storage unit 21.
- the planning 105 of the preparation process 220 and/or the calculation of the process completion 204 is carried out depending on the reference data 223.
- the preparatory measure 230 preferably includes an automatic control 230.1 of the extrusion device 10 for carrying out the at least partial adaptation of the process parameter set 202 during the manufacturing process 200. Additionally or alternatively, it is conceivable that the preparatory process 220 requires a user interaction 233 and the preparatory measure 230 requires an output of a recommendation for action 232 for carrying out the user interaction 233 to an operator, in particular through a display device 22 of the control system 20.
- the implementation 106 of the preparatory measure 230 is preferably carried out in time depending on the process completion 204 in order to match the process completion 204 to allow timing. Furthermore, in preparation for the end of the process 204, in particular before carrying out 106 the preparatory measure 230, an automatic change of a material inflow to at least one extruder 11 and/or a feed device 12 of the extrusion device 10 can be carried out.
- a detection 107 of sensor data 207 takes place in order to detect 103 a change in the manufacturing process 200 by one or more sensors 13 of the extrusion device 10, which depends on the preparatory measure 230 occurs.
- the sensor data 207 are monitored with regard to a process condition 208 of the manufacturing process 200.
- the process condition 208 includes the quality criterion of the first film material 201 and/or a process stability criterion of the manufacturing process 200.
- implementation data 252 of the preparatory measure 230 are preferably stored, in particular, as part of the process history 250 to make them available for further subsequent processes 210 in the storage unit 22 of the control system 20, in order to use the implementation data 252 to create a learning effect and an improvement in the especially internal know-how.
- the control unit 23 can have an artificial intelligence 24, to which the process parameter set 202 and the target subsequent parameter set 212 are supplied as input data in order to obtain the planning of the preparatory process 220 and/or the preparatory measure 230 as output data.
- the implementation data 252 and/or the process history 250 with the sensor data 207, the process parameter set 202 and the target subsequent parameter set 212 of the artificial intelligence 24 can be supplied to the artificial intelligence 24 as training data.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022123024.4A DE102022123024A1 (de) | 2022-09-09 | 2022-09-09 | Verfahren zur Unterstützung eines Prozesswechsels, Computerprogrammprodukt sowie System |
| PCT/EP2023/074796 WO2024052559A1 (de) | 2022-09-09 | 2023-09-08 | Verfahren zur unterstützung eines prozesswechsels, computerprogrammprodukt sowie system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4584074A1 true EP4584074A1 (de) | 2025-07-16 |
Family
ID=88068902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23771807.7A Pending EP4584074A1 (de) | 2022-09-09 | 2023-09-08 | Verfahren zur unterstützung eines prozesswechsels, computerprogrammprodukt sowie system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20260079476A1 (de) |
| EP (1) | EP4584074A1 (de) |
| CN (1) | CN119768263A (de) |
| DE (1) | DE102022123024A1 (de) |
| WO (1) | WO2024052559A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015108972A1 (de) * | 2015-06-08 | 2016-12-08 | Windmöller & Hölscher Kg | Verfahren für die schrittweise Führung eines Maschinenbedieners einer Extrusionsvorrichtung beim Wechsel von einer Einsatzrezeptur auf eine Folgerezeptur |
| DE102015108979A1 (de) * | 2015-06-08 | 2016-12-08 | Windmöller & Hölscher Kg | Verfahren für die Durchführung eines Materialwechsels bei einer Extrusionsvorrichtung |
| DE102015108974A1 (de) | 2015-06-08 | 2016-12-08 | Windmöller & Hölscher Kg | Verfahren für die Vorbereitung eines Materialwechsels bei einer Extrusionsvorrichtung für eine Folienmaschine |
| DE102016119754A1 (de) * | 2016-10-17 | 2018-04-19 | Windmöller & Hölscher Kg | Verfahren für die Durchführung eines Materialwechsels bei einer Vorlagevorrichtung eines Extruders |
-
2022
- 2022-09-09 DE DE102022123024.4A patent/DE102022123024A1/de active Pending
-
2023
- 2023-09-08 WO PCT/EP2023/074796 patent/WO2024052559A1/de not_active Ceased
- 2023-09-08 US US19/109,933 patent/US20260079476A1/en active Pending
- 2023-09-08 EP EP23771807.7A patent/EP4584074A1/de active Pending
- 2023-09-08 CN CN202380062040.6A patent/CN119768263A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN119768263A (zh) | 2025-04-04 |
| DE102022123024A1 (de) | 2024-03-14 |
| WO2024052559A1 (de) | 2024-03-14 |
| US20260079476A1 (en) | 2026-03-19 |
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Legal Events
| Date | Code | Title | Description |
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