EP2527103A1 - Procédé pour déterminer les portions à découper d'un matériau plain à l'aide d'une photo - Google Patents

Procédé pour déterminer les portions à découper d'un matériau plain à l'aide d'une photo Download PDF

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Publication number
EP2527103A1
EP2527103A1 EP12169173A EP12169173A EP2527103A1 EP 2527103 A1 EP2527103 A1 EP 2527103A1 EP 12169173 A EP12169173 A EP 12169173A EP 12169173 A EP12169173 A EP 12169173A EP 2527103 A1 EP2527103 A1 EP 2527103A1
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EP
European Patent Office
Prior art keywords
cut
parts
photo
determination
leather
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.)
Ceased
Application number
EP12169173A
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German (de)
English (en)
Inventor
Matthias Felber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2527103A1 publication Critical patent/EP2527103A1/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/007—Control means comprising cameras, vision or image processing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/10—Making cuts of other than simple rectilinear form

Definitions

  • the present invention relates to a method according to the preamble of claim 1, i. a method by which it is determined from where parts of a flat, limp, or other material auschnchneidende parts are cut from the material.
  • the aforementioned flat, limp material may be, for example but not exclusively, cloth, leather, hide, paper, foil, cork, rubber, felt, etc.
  • the cutting out of the parts to be cut out is nowadays frequently carried out by a computer-controlled automatic cutting machine.
  • Such cutting machines are known for a wide variety of materials and in a variety of embodiments. Also for cutting flat, limp materials there are already appropriate cutting machines. Therefore, and because the cutting machines are of minor importance in the present case, the description of details of the cutters used or used is dispensed with.
  • the control of the cutting machine by the computer is carried out taking into account the previously made determination of where to cut out of the material to be cut to be cut from the material. More specifically, the cutting machine is driven to cut out the cutters Cut parts from the previously defined locations from the material to be cut.
  • the determination of where to cut out of the cut material to be cut from the material is preferably such that the material to be cut is optimally used, that is, as little waste of the material to be cut is left. At the same time, however, care must be taken to ensure that the cut-out parts themselves fulfill certain specifications. That is, it may be required, for example, that the cut-out parts either either none or only certain types or sizes of damage (holes or cracks, etc.), or no or only certain irregularities (within a part changing surface texture or color, Sample defects, etc.) may have, or must meet very specific requirements in terms of color, structure, pattern, etc., or may not have or at least not clearly visible differences to otherrébulden or cut parts.
  • the specifications to be met by the parts to be cut out can vary and depend on the individual case.
  • the determination of where to cut from the material to be cut parts from the material can be done automatically or manually.
  • the material to be cut that is, for example, a piece of leather such as a complete animal skin is scanned and determined on the basis of the data obtained their outline and their location on the surface carrying them.
  • flaws or markings indicative of different quality zones may be appropriate and recognized and taken into account by the computer performing the determination.
  • the computer can then perform an optimal arrangement of the cutting patterns on the material to be cut.
  • experience shows that the result of such nesting is often not optimal.
  • the outlines of the parts to be cut are projected by a projection device in original size on the material to be cut and can be rotated or moved by a person standing next to him as desired. This person can thus already recognize when nesting whether the later cut out parts will meet the quality requirements.
  • Material areas from which parts with particularly high quality requirements are to be cut out can be examined particularly accurately. If one limits this particularly precise examination to those areas of material from which parts with special quality requirements are to be cut out, it can be achieved with a high but often still acceptable expenditure of time that more of the cut-out parts when automatic nesting meets the quality requirements placed on them. However, practice shows that not all cut parts meet the quality requirements placed on them.
  • manual nesting is much more time-consuming than automatic nesting.
  • the present invention is therefore based on the object to find a way by which is quickly and easily fixed, from where a flat, limp, or other material layouts are cut out of the material, in such a way that on average more of the cut parts than previously meet the quality requirements placed on them.
  • the inventive method is characterized in that the determination is carried out using a photo of the material to be cut.
  • the nesting using a photograph of the material to be cut makes it possible to perform the nesting under consideration of information shown on a computer monitor alone. Apart from the photo of the material to be cut, only the cutting patterns defining the parts to be cut and, if appropriate, the quality requirements placed on the parts to be cut out must be displayed on the computer monitor. The nesting can then be done simply by bringing the pattern shown on the computer monitor by moving and rotating in the desired position and location within the on the computer monitor also shown photos of the material to be cut.
  • the photo of the material to be cut shows even if the photo was taken with a medium quality camera was a highly accurate image of the surface of the material to be cut. This eliminates the need for the person performing the nesting to stand next to the material to be cut during the nesting and for the pattern to be projected onto the material to be cut. Errors, irregularities and other visible features of the material being cut can also be detected on the photo of the material being cut on the computer monitor.
  • the inventive method is thus faster, easier, and better fixable, from where a flat, limp, or other material layouts are cut out of the material.
  • the method presented here is used in the example considered in a system for cutting parts of pieces of leather used.
  • One possible construction of such a system is in FIG. 1 illustrated.
  • the system in which the method is used can also be designed differently and / or be provided for a different purpose.
  • the method can also be used, for example, in systems for cutting parts from other flat, limp materials, such as, but by far not exclusively, fabrics, skins, paper, films, cork, rubber, felt, etc.
  • the materials to be cut need not be individual pieces of material, as in the example considered. It may also be sheet material that is unrolled from a supply roll. This is often the case, for example, with textile materials such as fabrics.
  • the method can also be used in equipment for cutting parts of any other materials, such as marble slabs or other non-limp materials.
  • the process does not have to be part of one of the mentioned plants. It can also be used outside of one of these systems.
  • the FIG. 1 shows a plan view of the system from above.
  • the reference numeral 1 denotes an endless conveyor belt which runs over a work table.
  • the conveyor belt 1 serves as a support surface for the pieces of leather to be cut and transports the pieces of leather placed thereon in a in the FIG. 1 A direction.
  • a piece of leather placed on the conveyor belt 1 passes successively through a plurality of workstations, in each of which different work is performed on the pieces of leather to be cut or already cut.
  • a piece of leather to be cut is placed in the laying and photographing station I on the conveyor belt 1 and further transported by this first in the cutting station II, and finally in the Abhoffmstation III.
  • the conveyor belt 1 can thereby be continuous, i. without intermediate interruptions, or intermittently, i. be moved with intermediate stops.
  • a piece of leather to be cut is placed on the conveyor belt 1 and photographed.
  • the leather piece 21 may be a complete animal skin, for example the complete skin of a cow, or only part of it.
  • a photo preferably a color photograph is taken after placing on the conveyor belt.
  • the photograph is taken by a camera 3, which is arranged centrally above the lay-up and photographing I and photographed the leather piece 21 in a frontal plan view from above.
  • the camera 3 is a high-resolution digital camera. In the example considered, a Canon 5D Mark 2 with 21 megapixels is used.
  • the camera 3 is preferably connected to the computer C, so that a so-called tethering can take place.
  • the computer C can make the desired recording settings (time, aperture, sensitivity, etc.) and trigger the recording, and the data representing the photograph can be transmitted immediately to the computer C for viewing and further processing immediately after the recording.
  • the data representing the photograph Once the data representing the photograph has arrived at computer C, it is determined based on which of the parts to be cut out of the leather piece 21 from where to cut out the piece of leather. This, also called nesting process will be described later in more detail.
  • the parts to be cut out of the piece of leather are cut out of the piece of leather.
  • the piece of leather resting on the conveyor belt 1 in the cutting station II is designated by the reference numeral 22.
  • This piece of leather 22 was placed in front of the piece of leather 21 in the lay-up and photographing I on the conveyor belt 1 and photographed and then transported by the conveyor belt 1 in the cutting station II.
  • the cut out the pieces to be cut out of the leather piece 22 are made by a cutting device 5 mounted on a bridge 4, the cutting device being movable along a double arrow C along the bridge 4, and the bridge 4 itself together with the cutting device 5 perpendicular thereto, ie along a double arrow B is movable.
  • the cutting device 5 can operate according to any principle, for example, using a pulling knife, a circular blade, an oscillating knife, which performs an up and down movement, a high-frequency meter whose frequency can reach into the ultrasonic range, a water jet, a laser, or a plasma cutter.
  • the cutting out of the parts to be cut out of the piece of leather takes place according to a previously made determination, which are cut out of the piece of leather 22 from where to cut out of the piece of leather.
  • it is so that the cutting out of the parts to be cut is not started until the nesting for the relevant piece of leather is completed or that the nesting is performed so fast that it is completed when the piece of leather has arrived in the cutting station II and could be started with the cutting.
  • all workstations work simultaneously. That is, while in the clearing station III, the cut piece of leather 23 is cleared from the conveyor belt, the next piece of leather 22 is cut simultaneously in the cutting station II, and at the same time in the laying and photographing I the next piece of leather 21 is placed and photographed.
  • the plant may also contain more or less or other workstations.
  • a further cutting station is present behind the cutting station II.
  • the system is designed and controlled so that it works on as many workstations as possible for as long as possible and, of course, the highest possible throughput is achieved.
  • the in the FIG. 1 The system shown also includes a workstation for an operator. There are a computer CC and an attached computer monitor M.
  • the computer CC is used to control the entire system and to the detailed description below, which parts are cut from where from a piece of leather (nests). For the sake of completeness, it should be noted that the computer CC is also connected to the controllable elements of the workstations I-III.
  • the nesting is done using the material taken in the lay-up and photographing station I or elsewhere from the material to be cut, this photograph being a color photograph in the example under consideration, but it could also be a black-and-white photograph.
  • the photo used for nesting may be the unprocessed photo from the camera 3, or may be subjected to post-processing nests, for example, but not limited to brightness, contrast, color, sharpness, noise reduction, etc., as desired can be.
  • post-processing nests for example, but not limited to brightness, contrast, color, sharpness, noise reduction, etc., as desired can be.
  • the desired post-processing can be carried out at least partially even within the camera.
  • the photograph is preferably taken and / or processed so that both the outline of the photographed piece of leather or other material as well as the appearance of the surface thereof, as well as optionally on the leather piece attached markings are visible.
  • the nesting can be done automatically by the computer CC taking into account only the photograph and the cut patterns defining the parts to be cut and, if necessary, the requirements placed on the parts to be cut.
  • the nesting can also be done manually by a person operating the computer CC.
  • the photograph of the material to be cut and the cutting patterns defining the parts to be cut and, if necessary, further information such as the particular requirements on the computer monitor M placed on the parts to be cut are manually displayed, and the operator's nesting is manually based solely on them information shown to the computer monitor.
  • FIG. 2 An example of the information displayed on the computer monitor M is in FIG. 2 illustrated.
  • the photo is here denoted by the reference M21, and the patterns with the reference M211 - M21z.
  • the representation of the cutting patterns M211-M21z on the computer monitor M is preferably carried out in such a way that only the contour lines of the cutting patterns are represented and the region of the cutting patterns surrounded by the contour lines is transparent. This has the positive effect that, when moving the pattern over the photo, the areas of the photo coming under the transparent areas of the pattern remain visible. As a result, it can be easily recognized whether the part to be cut out comes to lie in an area of the piece of leather which has errors, irregularities and / or other unacceptable visible features. If a piece to be cut out were to lie in such a region of the piece of leather, this would be recognizable on the computer monitor M, and the pattern could be moved to a more suitable location.
  • the photo with the superimposed cutting patterns can be displayed enlarged on demand on the computer monitor M, so that even small errors, irregularities and / or other unacceptable visible peculiarities can be detected reliably on the computer monitor.
  • other information can also be displayed on the computer monitor M, which must be taken into account when nesting. This may, for example, be the quality requirements imposed on the parts to be cut out. Thus, for example, it may be specified that the part M211 may not contain any error at all, and / or that the part M212 may contain up to two smaller errors, and / or that the part M21z has exactly the same color and the same surface structure as the part M211 must have.
  • the respective requirements can be displayed in a variety of ways on the computer monitor. They can be displayed in plain text, or in coded form, for example by displaying the patterns in different colors.
  • an automatic nesting could be carried out, and then the result obtained could be assessed and manually corrected if necessary.
  • the nesting is to take place taking into account flaws and / or different quality zones on the material to be cut, there are various possibilities to recognize the flaws and / or different quality zones.
  • a first possibility is that the defects and / or different quality zones are determined by markings which were applied to the material to be cut before being photographed on the photo and are visible on the photo.
  • Another possibility is that on the material to be cut no defects and / or different quality zones characterizing markings are applied and the defects and / or different quality zones are determined by examining the image contained in the photo of the surface of the material to be cut.
  • the photo of the material to be cut shows a highly accurate image of the surface of the material to be cut. This eliminates the need for the person performing the nesting to stand next to the material to be cut during the nesting and for the pattern to be projected onto the material to be cut. Errors, irregularities and other visible features of the material to be cut can also be detected on the photo displayed on the computer monitor of the material to be cut.
  • the camera is arranged centrally above the surface on which the material to be cut is placed, ie the material is photographed in a frontal plan view from above, errors, irregularities and other visible features of the material to be cut in the photo even better recognize as the direct viewing of the material to be cut by a person standing next to it, because the person next to it has a less favorable viewing angle than the camera, and also are usually at least parts of the material to be cut too far away from the viewer as this still accurate examination after mistakes, irregularities and other visible features.
EP12169173A 2011-05-24 2012-05-23 Procédé pour déterminer les portions à découper d'un matériau plain à l'aide d'une photo Ceased EP2527103A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011050627A DE102011050627A1 (de) 2011-05-24 2011-05-24 Verfahren, durch welches festgelegt wird, von wo aus einem material auszuschneidende teile aus dem material auszuschneiden sind

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EP2527103A1 true EP2527103A1 (fr) 2012-11-28

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EP12169173A Ceased EP2527103A1 (fr) 2011-05-24 2012-05-23 Procédé pour déterminer les portions à découper d'un matériau plain à l'aide d'une photo

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DE (1) DE102011050627A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103640047A (zh) * 2013-11-25 2014-03-19 银川博聚工业产品设计有限公司 照片自动切割装置
ITBO20130085A1 (it) * 2013-02-28 2014-08-29 Bierrebi Italia S R L Apparecchiatura per il taglio di un materiale.
EP2857161A1 (fr) * 2013-09-18 2015-04-08 Kuris-Spezialmaschinen GmbH Installation et procédé de analyse optique et de coupe de matériau en bande plate
EP3260255A1 (fr) * 2016-06-24 2017-12-27 Zünd Systemtechnik Ag Système pour la découpe d'un produit
WO2022096398A1 (fr) 2020-11-03 2022-05-12 Agfa Nv Procédé d'impression par jet d'encre sur des objets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015107438A1 (de) * 2015-05-12 2016-11-17 Fortuna Spezialmaschinen Gmbh Vorrichtung und Verfahren zum Schärfen von Zuschnitten aus biegeschlaffem Material

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DE3519806A1 (de) * 1985-02-01 1986-08-07 Investronica, S.A., Madrid Verfahren und vorrichtung zur anpassung der muster von zuschnitten vor dem schneiden aus bahnenfoermigem gemusterten material
DE4012462A1 (de) * 1990-04-19 1991-10-24 Duerkopp System Technik Gmbh Verfahren zum nesten von naturleder
DE4100534C1 (fr) * 1991-01-10 1992-01-23 Duerkopp Systemtechnik Gmbh, 4800 Bielefeld, De
DE19522717C1 (de) * 1995-06-22 1996-12-12 Duerkopp Adler Ag Verfahren zum Schneiden oder Stanzen einzelner Teile aus einer Tierhaut
GB2385734A (en) * 2002-02-11 2003-08-27 Gerber Technology Inc Method and apparatus for imaging, display and cutting of a sheet material

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FR2548077B1 (fr) * 1983-06-30 1987-03-06 Gerber Scient Inc Appareil pour aider un operateur a resoudre les problemes poses par les defauts des etoffes
AT405497B (de) * 1996-04-02 1999-08-25 Gfm Gmbh Verfahren zum ausschneiden von zuschnitten aus flachen, unregelmässigen werkstücken, insbesondere lederstücken
AT406464B (de) * 1997-08-21 2000-05-25 Gfm Holding Ag Verfahren zum erstellen eines schnittnestes
US6807289B2 (en) * 2001-08-10 2004-10-19 Gerber Technology, Inc. Method to compensate for pattern distortion on sheet-type work material spread onto a support surface
DE102010021274B4 (de) * 2010-05-19 2013-11-14 Wolfgang Bruder Verfahren zum Nesten von Naturleder und Anlage zur Durchführung des Verfahrens

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
DE3519806A1 (de) * 1985-02-01 1986-08-07 Investronica, S.A., Madrid Verfahren und vorrichtung zur anpassung der muster von zuschnitten vor dem schneiden aus bahnenfoermigem gemusterten material
DE4012462A1 (de) * 1990-04-19 1991-10-24 Duerkopp System Technik Gmbh Verfahren zum nesten von naturleder
DE4100534C1 (fr) * 1991-01-10 1992-01-23 Duerkopp Systemtechnik Gmbh, 4800 Bielefeld, De
DE19522717C1 (de) * 1995-06-22 1996-12-12 Duerkopp Adler Ag Verfahren zum Schneiden oder Stanzen einzelner Teile aus einer Tierhaut
GB2385734A (en) * 2002-02-11 2003-08-27 Gerber Technology Inc Method and apparatus for imaging, display and cutting of a sheet material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20130085A1 (it) * 2013-02-28 2014-08-29 Bierrebi Italia S R L Apparecchiatura per il taglio di un materiale.
WO2014132214A3 (fr) * 2013-02-28 2015-01-22 Bierrebi Italia S.R.L. Appareil pour couper une matière
EP2857161A1 (fr) * 2013-09-18 2015-04-08 Kuris-Spezialmaschinen GmbH Installation et procédé de analyse optique et de coupe de matériau en bande plate
CN103640047A (zh) * 2013-11-25 2014-03-19 银川博聚工业产品设计有限公司 照片自动切割装置
EP3260255A1 (fr) * 2016-06-24 2017-12-27 Zünd Systemtechnik Ag Système pour la découpe d'un produit
US10759074B2 (en) 2016-06-24 2020-09-01 Zünd Systemtechnik Ag System for cutting of cutting stock
WO2022096398A1 (fr) 2020-11-03 2022-05-12 Agfa Nv Procédé d'impression par jet d'encre sur des objets

Also Published As

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