EP4479195A1 - Sortierverfahren zum automatischen absortieren und sortiervorrichtung - Google Patents
Sortierverfahren zum automatischen absortieren und sortiervorrichtungInfo
- Publication number
- EP4479195A1 EP4479195A1 EP23701373.5A EP23701373A EP4479195A1 EP 4479195 A1 EP4479195 A1 EP 4479195A1 EP 23701373 A EP23701373 A EP 23701373A EP 4479195 A1 EP4479195 A1 EP 4479195A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sorting
- workpieces
- actual image
- removal area
- actual
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
- B07C2501/0063—Using robots
Definitions
- Sorting method for automatic sorting and sorting device.
- the invention relates to a sorting method for the automatic sorting of workpieces arranged in a removal area of a flat bed machine tool, in particular a laser cutting machine or a punching machine, into a storage area after a sorting process.
- the invention also relates to a sorting device.
- Such a sorting method and such a sorting device is usually used after the workpieces have been manufactured in a flatbed machine tool, with the workpieces being positioned in the removal area of the flatbed machine tool.
- a production table of the flatbed machine tool which is used to support the workpieces during production, is moved to the removal area.
- process disruptions can occur that impair the intended sorting process or even make it impossible.
- Process disturbances of this kind can arise, for example, as a result of displaced and/or overlapping workpieces, as a result of which, for example, the workpiece can be prevented from being picked up by a gripper.
- a process disruption in the form of a between the support webs tilted component or contamination of the support webs for example a production residue jammed between the support webs.
- Process disturbances of this kind are not recognized in conventional sorting methods, which means that the sorting of the workpieces can be prolonged due to unsuccessful attempts by the gripper to remove them.
- the gripper and/or the workpieces can be damaged as a result of the process disruption, since there can be a collision between the gripper and the workpiece, for example.
- This has a disadvantageous effect on process reliability and process speed of the sorting process.
- the intervention of a specialist is necessary in order to react appropriately to process disturbances. This also disadvantageously reduces the degree of automation.
- EP 3 514 639 A1 discloses a method for palletizing parts processed in a processing machine, in which the parts processed in the processing machine are moved to an unloading area with a gripping device and positioned at a storage location on a storage area in the unloading area.
- the storage area available in the unloading area and the storage location of the parts are determined by means of a detection device directed towards the unloading area and a data evaluation device.
- DE 10 2016 120 131 A1 discloses a method for assisting an operator in a manual sorting process of workpieces arranged on a sorting table, in which a sorting signal is generated from a sorting image data set, which contains information about the type, location and/or include the shape of at least one extracted workpiece.
- a sorting signal is generated from a sorting image data set, which contains information about the type, location and/or include the shape of at least one extracted workpiece.
- the object is achieved by a sorting method for automatically sorting workpieces arranged in a removal area of a flatbed machine tool, in particular a laser cutting machine or a punching machine, into a storage area after a sorting process; characterized by the steps:
- the actual image depicts the actual state of the removal area of the flat bed machine tool.
- the as-is image captures features of the extraction area.
- the actual image is preferably a two-dimensional image of the removal area.
- the actual image can map a surface of the removal area that can be detected from a specific imaging angle, with the detected features, such as a change in the surface contour, being able to be imaged in the actual image.
- Analyzing the as-is image may include recognizing the features captured in the as-image.
- the features are preferably recognized by image processing of the actual image.
- predetermined components in particular workpieces, workpiece support
- Characteristic features of the components to be determined are preferably provided for this purpose. For example, by recognizing a cut contour, a workpiece having this contour can be determined in the actual image.
- a process disturbance can be identified by analyzing the actual image. Provision can be made here for properties to be determined for the ascertained components and compared with predetermined reference properties. If a discrepancy is found between the specific properties of the determined components and the reference properties, the process disturbance is deemed to have been identified.
- the process disruption is preferably only identified when a predetermined degree of deviation is determined.
- a process disruption is understood to mean an impairment of the sorting process in which the sorting is significantly disrupted or even made impossible.
- a process disruption can occur in the form of the events listed below.
- “Shifted workpiece” This can change the removal position of one or more workpieces, causing the gripper to move to the wrong position when removing the workpiece.
- a scrap skeleton can be viewed as a workpiece overlap another work piece, and in all cases gripper access may be unsafe or inadequate, which could result in damage to the work pieces and/or the gripper.
- "Tilted Workpiece” A tilted workpiece may be in the correct position for picking, but in an orientation that prevents access by the gripper. This can prevent the picking of the workpiece, thereby prolonging the sorting of the workpieces.
- Contaminated workpiece support The remaining of production residues on and/or in the workpiece support prevents the correct positioning of further workpieces to be removed, which also makes sorting after the sorting process more difficult. This is particularly problematic when using workpiece supports with a so-called web support a contaminated workpiece support can occur due to wear and/or dirt, which can make it difficult to properly support the workpieces and thus to sort them.
- the workpiece can be attached to another workpiece, in particular the scrap skeleton, after manufacture in such a way that removal by the gripper is impossible. This can damage and/or shift the Workpieces and damage to the gripper occur In any case, the sorting of the workpieces is prolonged.
- Incorrect assignment of the workpiece support Incorrect assignment of the workpiece support by the workpieces prevents the removal of the workpieces after the predetermined sorting process. Sorting can be significantly extended or even prevented as a result.
- the measure for adapting the sorting process is initiated automatically. In other words, the process disturbance is automatically responded to.
- the measure for adapting the sorting process can consist in bypassing the process disruption, for example by skipping the removal in the case of a missing part, or in eliminating the process disruption, for example by cleaning the contaminated workpiece support.
- exemplary measures may consist of changing the order in which the workpieces are removed, attempting to remove them with changed access settings and/or issuing an instruction.
- An instruction preferably relates to changing the occupancy of the workpiece support, reproducing missing or incorrectly cut workpieces and/or intervention by a specialist. In this way, a process disruption that has its cause beyond the possibilities of intervention by the sorting method can be counteracted, as a result of which further process disruptions can be prevented.
- the method according to the invention is set up for monitoring the removal area and for identifying existing and/or occurring process disturbances, with the sorting method reacting automatically when the process disturbance is identified.
- the process reliability, the process speed and the degree of automation of the sorting process can be increased.
- a suddenly occurring process disruption can be identified, for example.
- process reliability in particular can be further increased.
- a process disruption occurring after the removal can be identified, for example.
- the measure can then already be initiated while the workpiece is being set down. In this way, the process speed in particular can be further increased.
- the correct removal of the workpiece can be monitored by creating the actual image and identifying the process disruption, in particular immediately before and after removal.
- the process reliability in particular can advantageously be further increased by adapting a removal strategy of the gripper.
- a sensory creation of the actual image has particular advantages in the case of removal areas in which an, in particular continuous, detection of the entire removal area is prevented by optical blockages, for example in the form of dust and/or objects.
- a sensory representation of the actual situation can take place, for example, by means of a surface scan. The surface image is then preferably converted into an image format, which means that the actual image can be analyzed by means of graphic image evaluation.
- the sorting method in which at least two actual images are created and the process disturbance is identified by analyzing the two actual images.
- the actual images are preferably produced using two different imaging devices, for example two cameras and/or from different directions.
- the process disturbance can be identified redundantly by analyzing both actual images.
- the position of the workpiece can be understood, for example, as the geometric center point of the workpiece.
- An ideal access position of the gripper can preferably be determined from the position of the workpiece. As a result, the position of the workpiece can be approached by the gripper in a particularly simple manner.
- a target image which represents the expected state of the removal area and the process disruption from a predetermined deviation in the spatial position of the workpieces between the actual image and the target image and/or or is identified from a predetermined deviation in the spatial orientation of the workpieces between the actual image and the target image.
- An "expected state” can include, for example, an expected position and/or orientation of the workpieces and/or an expected state of the removal area.
- the target image has expected features of the removal area.
- the target image can, for example, be in the form of a Production plan of the workpieces of the flat bed machine tool and/or a reference image, in which the expected features were determined.
- the actual image of a first comparison can be used as a reference image for a subsequent comparison. This is preferably stored automatically.
- the process disruption is identified by comparing a state of a sorted removal area determined from the actual image with a correct state of the sorted removal area determined from the target image.
- the sorting process is adapted by the gripper by suspending the sorting process, changing the order in which the workpieces are removed, issuing a warning, informing an operator, cleaning the removal area and/or changing a removal strategy.
- the Process disruption either resolved or bypassed so that automatic sorting can continue.
- the underlying object is also achieved by a sorting device for automatically removing workpieces from a removal area of a flat bed machine tool and depositing the workpieces in a storage area after a sorting process.
- the sorting device is preferably set up to carry out the sorting method described above.
- the sorting device has a controller for controlling a gripper of the sorting device, the gripper being designed to grip the workpieces.
- the sorting device also has at least one imaging device that is set up to create an actual image of the removal area.
- the sorting device has an evaluation unit that is set up to identify a process disruption by analyzing the actual image of the removal area.
- the at least one imaging means is designed as a camera, a laser scanner and/or a light section sensor.
- the sorting device in which the at least one imaging means is positioned in a stationary manner above the removal area.
- a corresponding arrangement enables the removal area to be imaged as a whole from a fixed position with a fixed one Angle. This favors the analysis of the actual image by the evaluation unit.
- the sorting device has at least two imaging means, with at least one of the imaging means being attached to the gripper.
- a further imaging means enables a redundant imaging of the removal area, in particular from a further imaging direction. In this way, for example in the event of a partial blockage of one imaging means, an analysis can be carried out using the actual imaging of the other imaging means.
- the at least one imaging means attached to the gripper is set up to create an actual image of the storage area.
- a process disruption in the storage area for example a tipped over storage pile, is identified by analyzing the actual image of the storage area. For identification, it can be provided that the actual image of the storage area is compared with a provided target image of the storage area. As a result, process reliability can be further increased.
- FIG. 1 shows an arrangement with a flat bed machine tool and a sorting device according to the invention in a perspective view.
- FIG. 2 shows the method according to the invention in a schematic flow chart.
- FIG. 3 shows an actual image of a removal area with workpieces positioned on a workpiece support with a displaced workpiece in a schematic representation.
- FIG. 4 shows a target image of the removal area from FIG. 2 with an expected position of the workpieces.
- FIG. 5 shows a first removal area after initiation of a first measure for adapting a sorting process in a sectional schematic illustration.
- FIG. 6 shows a second removal area after initiation of a second measure for adapting the sorting process in a sectional schematic view.
- FIG. 7 shows a third removal area after initiation of a third measure for adapting the sorting process in a sectional schematic representation.
- Fig. 1 shows an arrangement 10 with a flatbed machine tool 12 in the form of a laser cutting machine, a sorting device 14, a removal area 16 and a storage area 18.
- the sorting device 14 designed by way of example has a gripper 20 which, by being arranged on a boom 22 via a rail guide 24 can be moved along an axis 26 between the removal area 16 and the storage area 18 . Furthermore, the gripper 20 can be moved translationally and rotationally with respect to the boom 22 .
- a workpiece support 28 is positioned in the removal area 16 .
- the workpiece support 24 has a web support 30 .
- On the workpiece support 28 several workpieces 32 are positioned, previously in the Flatbed machine tool 12 were manufactured (for reasons of clarity, only one workpiece 32 is provided with a reference number).
- An imaging means 34 embodied as a camera of the sorting device 14 is fastened above the removal area 16 .
- the imaging means 34 is directed vertically downwards onto the removal area 16 and is set up for the holistic imaging of this.
- a storage pallet 36 is positioned in the storage area 18 and is used for storing and further transporting the workpieces 32 .
- the gripper 20 is moved according to a sorting sequence stored in a controller 37 of the sorting device 14 until the workpieces 32 have been removed from the removal area 16 and deposited in the storage area 18 .
- the gripper 20 moves, for example, along the axis 26 over the removal area 16 and is deflected in the vertical direction up to the workpieces 32 .
- the gripper 20 then grips, for example, one of the workpieces 32 and is then moved upwards in the vertical direction.
- the gripper 20 is then moved along the axis 26 into the storage area 18 and is deflected there in an analogous manner in order to deposit the workpiece 32 that has been picked up.
- FIG. 2 shows a schematic representation of a sorting method 38 according to the invention, which will be explained by way of example with reference to FIGS.
- an actual image 42 (see FIG. 3) of the removal area 16 is created.
- the actual image 42 is created, for example, by the imaging means 34 designed as a camera (see FIG. 1). and can be in the form of a two-dimensional photograph.
- the actual image 42 can capture the removal area 16 as a whole, as shown in FIG.
- a subsequent method step "Analyzing the actual image” 44 the actual image 42 is analyzed or evaluated.
- the image areas shown in the actual image 42 are assigned to predetermined components based on their characteristics. Features of the image areas can, for example, be the brightness, the structure and/or shape.
- the removal area 16 in the actual image 42 according to FIG. 3 can be distinguished from the workpieces 32 by its surface structure.
- the workpieces 32 can be differentiated from one another by a cut edge that differs from the imaging regions of the workpieces 32 .
- Analyzing also includes determining predetermined properties of the determined components based on which a process disturbance can be identified.
- a predetermined property of the determined components can be a minimum distance to another component.
- all workpieces 32 with the exception of a defective part 46 and a residual skeleton 48, have a minimum distance from the other workpieces 32 in each case. It is preferably determined on the basis of the properties of the remaining workpieces 32 that the residual skeleton 48 is arranged correctly and only the defective part 46 is out of place with respect to the workpieces 32 .
- a deviation of the properties of the components determined in the actual image 42 from predetermined properties can be identified as a process disturbance. For example, the fact that the defective part 46 does not have the required minimum distance from the residual skeleton 48 a process disturbance can be identified.
- a measure to adapt the Sorting process initiated automatically.
- at least one measure to be taken is stored in the controller 37 of the sorting device 14 for each process disturbance that occurs.
- the sorting process can be adjusted by changing from a removal access by the gripper 20.
- it can be provided, for example, that the faulty part 46 is first rotated by the gripper 20 and then removed.
- the removal of the defective part 46 takes place only after the removal of the remaining workpieces 32 .
- the method step "Analyzing the actual image” 44 can compare the actual image 42 with a target image 54 (as shown in FIG. 4).
- the target image 54 preferably represents the same Section of the removal area 16 as the actual image 42.
- the target image 54 represents the expected state of the removal area 16.
- 5 shows the removal area 16 after initiation of a measure to adapt the sorting process.
- the removal area 16 has the defective part 46 , which rests on one of the workpieces 32 on the one hand and on the web support 30 of the workpiece support 28 on the other hand.
- the error part 46 has a position changed by a translational deflection 56 and an orientation changed by an angle 58, so that the gripper 20 may not be able to grip the error part 46 when proceeding according to the originally intended sorting sequence.
- the method step "Analyze an actual image" 44 see Fig. 2)
- the error part 46 was determined.
- the process error "tilted workpiece” was identified because the error part 46 has a position and orientation deviating from its expected position and orientation.
- the sorting sequence was automatically changed by aligning the position and orientation of the gripper with the position and orientation of the defective part 46.
- FIG. 6 shows the removal area 16 after initiation of a further measure for adapting the sorting process.
- the removal area 16 has the defective part 46 , which is arranged on the one hand between the workpiece 32 and the web support 30 and on the other hand rests on the web support 30 .
- the faulty part 46 has slipped under the workpiece 32 by the deflection 56 . Removal of the faulty part 46 by the gripper 20 can lead to a significant displacement of the workpiece 32, as a result of which the workpiece 32 could be damaged or tilt.
- the error part 46 was determined.
- the process error "jammed and/or jammed workpiece” was identified .
- the sorting process was changed automatically, firstly by using a retaining device 60 and secondly by adapting a removal strategy of the gripper 20. While the restraining means 60 applies a restraining force to the workpiece 32 in the vertical direction in order to avoid lifting and shifting the same, the gripper 20 leads to the Gripping the error part 46 initially a return movement against the deflection 56. As a result, the faulty part 46 can be unthreaded without the workpieces 32 being displaced.
- the removal area 16 has a production residue 62, in particular a slug, and an impurity 64, in particular slag, which are arranged in the web support 30 and prevent positioning of workpieces 32 or already the production of the Affect workpieces 32 in the flatbed machine tool 12 (see Fig. 1) negatively.
- the process step “Analyze an actual image” 44 (see FIG. 2), the production residue 62 and the contamination 64 were determined.
- the process step “Identify a process fault” 50 for example, the process fault “contaminated workpiece support” was identified.
- the sorting process is automatically changed by the use of a cleaning agent 66 in the form of a brush. While the gripper 20 remains in a rest position, the cleaning agent 66 is inserted into the web pad 30 and drawn therethrough in a horizontal direction. As a result, both the production residue 62 and the contamination 64 can be effectively eliminated.
Landscapes
- Sorting Of Articles (AREA)
- Feeding Of Workpieces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022103890.4A DE102022103890A1 (de) | 2022-02-18 | 2022-02-18 | Sortierverfahren zum automatischen Absortieren und Sortiervorrichtung |
| PCT/EP2023/051182 WO2023156120A1 (de) | 2022-02-18 | 2023-01-19 | Sortierverfahren zum automatischen absortieren und sortiervorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4479195A1 true EP4479195A1 (de) | 2024-12-25 |
Family
ID=85036369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23701373.5A Pending EP4479195A1 (de) | 2022-02-18 | 2023-01-19 | Sortierverfahren zum automatischen absortieren und sortiervorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240383010A1 (de) |
| EP (1) | EP4479195A1 (de) |
| JP (1) | JP2025507504A (de) |
| CN (1) | CN118613335A (de) |
| DE (1) | DE102022103890A1 (de) |
| WO (1) | WO2023156120A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2025153260A (ja) * | 2024-03-29 | 2025-10-10 | 株式会社小矢部精機 | 搬送システム |
| DE102024117458A1 (de) * | 2024-06-20 | 2025-12-24 | TRUMPF Werkzeugmaschinen SE + Co. KG | Computergestütztes Palettierungsverfahren |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6180717U (de) * | 1984-11-02 | 1986-05-29 | ||
| JPH0192082A (ja) * | 1987-10-05 | 1989-04-11 | Japan Em Kk | パーツフィーダ用部品判別装置 |
| JPH10296577A (ja) * | 1997-04-22 | 1998-11-10 | Amada Co Ltd | 加工製品自動仕分け装置 |
| JP2003200115A (ja) * | 2002-01-09 | 2003-07-15 | Asahi Glass Co Ltd | ガラス片セパレータ、ガラス片の回収方法および板ガラスの製造方法 |
| DE102016102656B4 (de) * | 2016-02-16 | 2024-03-28 | Schuler Pressen Gmbh | Vorrichtung und Verfahren zur Verarbeitung von metallischen Ausgangsteilen und zum Sortieren von metallischen Abfallteilen |
| DE102016120131B4 (de) | 2016-10-21 | 2020-08-06 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Absortierunterstützungsverfahren und Flachbettwerkzeugmaschine |
| DE102016124400A1 (de) * | 2016-12-14 | 2018-06-14 | Krones Ag | Verfahren und Vorrichtung zum Erfassen von Störungen beim Objekttransport |
| EP3514639B1 (de) | 2018-01-17 | 2023-03-01 | TRUMPF Werkzeugmaschinen GmbH + Co. KG | Verfahren zur palettierung von in einer bearbeitungsmaschine bearbeiteten teilen |
| JP7059156B2 (ja) * | 2018-09-27 | 2022-04-25 | アンリツ株式会社 | 物品検査装置 |
| DE102018133524A1 (de) * | 2018-12-21 | 2020-06-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Bereitstellen von Tafelplanungsgeometriedaten, Verfahren und Laserflachbettmaschine zum Ausschneiden von Werkstücken |
| JP7281910B2 (ja) * | 2019-01-28 | 2023-05-26 | 株式会社Fuji | ロボット制御システム |
| CN113758926A (zh) * | 2020-06-03 | 2021-12-07 | 泰连服务有限公司 | 具有视觉检查站的产品组装机 |
-
2022
- 2022-02-18 DE DE102022103890.4A patent/DE102022103890A1/de active Pending
-
2023
- 2023-01-19 EP EP23701373.5A patent/EP4479195A1/de active Pending
- 2023-01-19 CN CN202380017518.3A patent/CN118613335A/zh active Pending
- 2023-01-19 WO PCT/EP2023/051182 patent/WO2023156120A1/de not_active Ceased
- 2023-01-19 JP JP2024543059A patent/JP2025507504A/ja active Pending
-
2024
- 2024-07-29 US US18/786,703 patent/US20240383010A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022103890A1 (de) | 2023-08-24 |
| CN118613335A (zh) | 2024-09-06 |
| JP2025507504A (ja) | 2025-03-21 |
| WO2023156120A1 (de) | 2023-08-24 |
| US20240383010A1 (en) | 2024-11-21 |
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