WO1991017029A1 - Coupe a dimension exacte par rapport a un dessin a repetition - Google Patents

Coupe a dimension exacte par rapport a un dessin a repetition Download PDF

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Publication number
WO1991017029A1
WO1991017029A1 PCT/EP1991/000683 EP9100683W WO9117029A1 WO 1991017029 A1 WO1991017029 A1 WO 1991017029A1 EP 9100683 W EP9100683 W EP 9100683W WO 9117029 A1 WO9117029 A1 WO 9117029A1
Authority
WO
WIPO (PCT)
Prior art keywords
parts
cutting
cut
outer contour
control device
Prior art date
Application number
PCT/EP1991/000683
Other languages
German (de)
English (en)
Inventor
Winfried Buchmann
Bodo Deutschmann
Thomas Heinrichs
Original Assignee
Krauss U. Reichert Gmbh + Co. Kg Spezialmaschinenfabrik
Karl Reichert Gmbh
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 Krauss U. Reichert Gmbh + Co. Kg Spezialmaschinenfabrik, Karl Reichert Gmbh filed Critical Krauss U. Reichert Gmbh + Co. Kg Spezialmaschinenfabrik
Publication of WO1991017029A1 publication Critical patent/WO1991017029A1/fr

Links

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
    • B26D5/005—Computer numerical control means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • 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—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/408—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
    • G05B19/4083—Adapting programme, configuration
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
    • G06Q10/043—Optimisation of two dimensional placement, e.g. cutting of clothes or wood
    • 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
    • B26D2005/002—Performing a pattern matching operation

Definitions

  • the invention relates to a method for accurate cutting-out cutting of cut parts from a material web having a pattern with a pattern repeat by means of a control device storing an outer contour of the cut parts and allowing the relative position of the outer contours to the pattern to be shifted, by means of which a cutting unit can be controlled.
  • each blank part must be individually aligned relative to the pattern and that it is no longer possible to arrange the blank parts relative to one another in a position that is optimized with regard to the resulting blend. Only after such a little optimized arrangement of the blank parts relative to one another can the position of the blank parts stored in a control computer for the cutting unit be recorded and entered in accordance with their respective orientation, so that finally the blanking parts can finally be cut to the exact repeat position.
  • the known method has the further disadvantage that it is extremely cumbersome and time-consuming.
  • the invention is therefore based on the object of improving a method of the generic type in such a way that it can be carried out as simply, time-saving and with as little waste as possible.
  • the object is achieved according to the invention in a method of the type described in the introduction in that the cut parts are arranged in a defined relative position in an optimized sectional image, in that the sectional image is subdivided into sub-sections between reference sections arranged at predetermined control intervals, in that the Repeat-accurate position of an outer contour of the first reference part is determined that after cutting out the subsection following the first reference part, the repeatable position of the outer contour of the next reference part is determined and compared with that of the first reference part, that a position difference between the repeat-accurate positions the outer contours of the reference parts are determined and transmitted to the control device as a correction quantity and that the next subsection is cut out taking into account the correction quantity.
  • This method according to the invention thus offers the possibility of cutting material-saving and also faster with sufficient repeat accuracy.
  • the repeat accuracy can be determined by the control intervals at which reference parts are arranged in order to check the repeat repeat and, if necessary, to correct the position of the cut parts in the next subsection.
  • the outer contour of the first reference part is cut out to determine the position of the latter. It is also advantageous if, in order to determine the position of the outer contour of the next reference part, this is cut out.
  • the reference parts have an outer contour with an edge parallel to the X axis. It is also advantageous if the reference parts have an outer contour with an edge parallel to the Y axis.
  • an embodiment which is particularly advantageous for the method according to the invention provides that the reference parts have a corner region formed by an edge which is parallel to the X axis and an edge which is parallel to the Y axis.
  • the comparison of the relative position of the outer contours can be carried out in a particularly simple manner if the repeatable position of the outer contour of the reference parts following the first reference part is compared with that of the first reference part.
  • the object according to the invention is also achieved by a device for accurately cutting out cut parts from a material web having a pattern with a pattern repeat, with a control device which stores an outer contour of the cut parts and an input unit for shifting a position of the outer contour Relative to the material web, and solved according to the invention with a cutting unit that can be controlled by the control device, in that the control device keeps the cut parts in a defined relative position in the form of a sectional image, and that the control device is arranged in the sectional image at predetermined control intervals Keeps reference parts, by which the sectional image is divided into subsections, and that the control device uses the input unit a correction quantity for a position correction of all the blank parts of the in each case to cut out upcoming subsection and carry out the position correction. It has proven particularly advantageous within the scope of the solution according to the invention if the control device is designed such that after the respective reference part has been cut out, the cutting out of the cut parts of the following subsection is stopped.
  • control device continues to cut out the cut parts of the next subsection after entering the correction size.
  • control device automatically activates and then deactivates the input unit for entering the correction variable after cutting out one of the reference parts, since then an erroneous input of correction variables and in particular also the input of incorrect correction variables minimizes can be.
  • the input unit is a screen device.
  • FIG. 1 shows a side view of a first exemplary embodiment of the solution according to the invention
  • 2 shows a plan view of the first exemplary embodiment
  • 3 shows a sectional image projected onto a material web without a repeat of the repeat
  • FIG. 4 shows the sectional view according to FIG. 3 with a repeat offset
  • FIG. 5 shows a side view of a second exemplary embodiment of the device according to the invention.
  • FIG. 6 shows a plan view of a second embodiment of the device according to the invention.
  • An embodiment of a device according to the invention comprises a cutting table 10, over which a cutting assembly, designated as a whole by 12, can be moved.
  • the cutting unit 12 is slidably mounted on a guide rail 14, for example below the cutting table 10 and parallel to it, with a guide part 16 of a bridge 18, which extends, for example, in a U-shaped manner over the cutting table 10.
  • a guide track 20 which extends across the cutting table 10 and on which the cutting unit 10 can be displaced across the cutting table 10 by means of a carriage 22.
  • a displacement of the cutting unit 12 by means of the carriage 22 along the guide track 20 across the cutting table 10 is referred to as a displacement of the cutting unit 12 in the Y direction
  • a displacement of the cutting unit 12 together with the bridge 18 and the guide part 16 is held by the guide rail 14 in the longitudinal direction of the cutting table 10 is referred to as a displacement in the X direction.
  • the cutting unit 12 is displaced in the Y and X directions preferably by means of a motor drive, for this purpose the cutting unit 12 with a motor 24 for displacing it in the Y direction and the guide part 16 with a motor 26 for displacing the same is provided in the X direction.
  • the cutting unit 12 is also provided with a Y-displacement sensor 28 and the guide part 16 with an X-displacement sensor 30, both of which are connected to a control computer 32, which in turn controls the motors 24 and 26.
  • the cutting unit 12 can be moved on the cutting table in a CNC-controlled manner by the control computer 32.
  • the cutting unit 12 is provided with a cutting knife 36 for cutting a material web 34 lying on the cutting table 10, which can preferably be moved up and down by the cutting unit 12 perpendicular to a plane 38 of the cutting table 10.
  • the cutting table is provided with a layer 40 of bristles standing perpendicular to the plane 38, which is able to carry the material web 34, but allows the cutting knife 36 to penetrate in an oscillating manner.
  • FIGS. 1 and 2 For example, an exemplary embodiment of a method according to the invention shown in the drawing in FIG. 3 can be carried out.
  • This exemplary embodiment is a method for cutting a sectional image 72 with exact repetition with a readjustment of the same when repeat tolerances occur.
  • This sectional view 72 shown in FIG. 3 comprises a large number of cut parts 74, which are preferably arranged in the sectional view 72 in a cutting-optimized manner. Furthermore, a first reference part 76 is also provided in the sectional image 72, as well as a second reference part 78 and a third reference part 80, these reference parts 76 to 80 being arranged in the sectional image 72 in such a way that their spacings A are an integral multiple of a pattern repeat RX in the X direction and a pattern repeat RY in the Y direction.
  • the pattern repeat RX or RY is the distance in the respective direction with which a pattern element 82, for example consisting of the two quadrilaterals 84 and 86, is repeated in the X and Y directions and thus overall the pattern 88 on the material web 34 results.
  • the pattern 88 is shown so that the pattern repeat RX and RY is constant.
  • the reference parts 76, 78, 80 arranged at a distance A are also each in identical relative orientation to the square 84.
  • the pattern repeat RX and RY is not constant over the entire material web 34, but a considerable repeat offset can occur, which is caused, for example, by warping of the material web 34 when laying it out or a variety of other reasons. If such a repeat of the pattern occurs, the individual pattern elements, for example the quadrilaterals 84 and 86, are not in the originally intended position (as shown in broken lines in FIG. 4) relative to the cut parts 74, but rather are shifted relative to this position.
  • the sectional image 72 is divided into subsections U1, U2 and U3 by the reference parts 76 to 80 arranged at intervals A.
  • the subsection Ul includes the reference part 76, which is located at the beginning thereof, the subsection U2 the reference part 78 and the subsection U3 the reference part 80.
  • the sectional image 72 is aligned relative to the material web 34, so that all cut parts can be cut out of the material web.
  • the cutting of the cut pieces 74 is then started by an operator via the control computer 32.
  • the cutting unit 12 cuts out the first reference part 76 and the cut parts 74 in the subsection U1. Then the second reference part 78 is also cut out.
  • the control computer stops the further cutting out of the cut-out parts 74 in the subsection U2 and waits for the input of a correction variable K via the input unit 44, which is, for example, a keypad with a screen.
  • a mask is specified on the screen of the input unit 44, for example, which requires the correction variable K to be entered with the values KX for the repeat offset in the X direction and KY for the repeat offset in the Y direction.
  • the operator determines the correction size K by taking the first cut-out reference part 76 and placing it on the second, likewise cut-out reference part 74 in a pattern or repeat and determining the correction variable with the values KX and KY by comparing an outer contour 90 thereof.
  • All reference parts 76 to 80 are preferably of identical design, so that the size and shape of an outer contour 90 are identical.
  • the outer contour 90 is preferably selected such that it has a corner region 92 with an outer edge 94 parallel to the X axis and an edge 96 parallel to the Y axis.
  • KX and KY are transmitted to the control computer 32, for example, via a keypad of the input unit 44.
  • the control computer now corrects the position of the cut parts 74 in the subsection U2, so that they again have a position relative to the pattern 88, ie to its rectangles 84 and 86, which corresponds to the position which exists in the absence of a repeat pattern was provided.
  • the control computer 32 automatically continues the cutting of these blank parts 74 and also cuts out the reference part 80.
  • the cutting is stopped again automatically and the first reference part 76 is placed on the third reference part 80 with pattern or repeat accuracy.
  • the correction size K can be determined with the values KX and KY and the position of the cut parts 74 in the subsection U3 can be corrected.
  • the bridge 18 is provided, for example, with a guideway 42 opposite the guideway 20 for an input unit designated 44 'as a whole.
  • This input unit 44 'can in turn be moved across the cutting table 16 in the Y direction by a motor 46 and is provided with a Y displacement sensor 18.
  • the input unit 44 'can be displaced in a controlled manner in the Y direction by means of the control computer 32 and can be moved in the X direction simultaneously with the cutting unit 12 and the motor 26 provided for this purpose using the X displacement sensor.
  • the input unit 44 'further comprises a Y projection unit 50 and an X projection unit 52, with the Y projection unit 50 being able to project Y light strips extending parallel to the Y direction onto the material web and with the X- Projection unit 52 an X light strip 56 running parallel to the X direction, the light strips 54 and 56 intersecting at a point 58.
  • the input unit 44 can also be moved on the cutting table 10 by a manual control unit 60 with the aid of the control computer 32 in both the X and Y directions.
  • the Y light strip 54 and the X light strip 56 can now be used to precisely position the sectional image 72 relative to the pattern 88, with one of the squares 84 or 86, for example, with the X and Y light strips 56 and 54 is approached on the material web and its position is transmitted to the control computer 32.
  • the control computer 32 is thus able to align the stored blank parts 74, to which the coordinates of the rectangles 84 and 86 are additionally stored, relative to the position of the rectangles 84 and 86 on the material web.
  • the sectional image 72 can thus be positioned with respect to the rectangles 84 and 86 exactly relative to the material web 72 at the beginning of the cutting process.
  • the cutting process is now carried out as already described above, first being cut out as the first reference part 76 and the cut parts 74 of the subsection U1 and then next as the second reference part 78.
  • first reference part 76 is placed on the second reference part 78 in a pattern or repeat, there is the possibility, with the aid of the input unit 44 'with the light strips 54 and 56, to shift the edges 94 and 96 between the first and the second reference part 76 and 78, whereby the light strips 54 and 56 are first applied to the edges 96 and 94 of the second blank 78, this coordinate value is stored in the control computer 32 and then the light strips 54 and 56 to the edges 96 and 94 of the first reference part 76 are created, this coordinate value is now also stored.
  • the control computer 32 is now able to determine the difference between these two coordinate values and thus also automatically the correction variable K with the values KX and KY and, on the basis of these values, to carry out the correction of the position of the blank parts 74 of the subsection U2.
  • the cutting process is then continued as already described in connection with the first exemplary embodiment and the third reference part 80 is also cut out.
  • the correction size K which is determined by the relative position of the third reference part 80 to the first reference part 76, which is placed on the pattern or in a pattern-accurate manner, can also be determined in accordance with the method described above by means of the light strips 54 and 56.

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Abstract

Afin d'améliorer un procédé de coupe à dimension exacte de pièces (74) dans une bande de matériau (34) ayant un dessin (88) à répétition (R), le dessin à découper (72) est subdivisé par des pièces de référence (76-80) agencées à intervalles de contrôle prédéterminés en sections intermédiaires (U1, U2, U3), et la position précise par rapport au dessin du contour extérieur de la première pièce de référence (76) est déterminée. Une fois que la section qui suit la première pièce de référence a été découpée, la position précise par rapport au dessin du contour extérieur de la pièce suivante de référence est déterminée et comparée avec celle de la première pièce de référence, la différence entre les positions précises par rapport au dessin des contours extérieurs des pièces de référence est déterminée et transmise en tant que valeur de correction (K) au dispositif de commande et la section suivante est découpée en tenant compte de la valeur de correction.
PCT/EP1991/000683 1990-04-30 1991-04-11 Coupe a dimension exacte par rapport a un dessin a repetition WO1991017029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904013837 DE4013837A1 (de) 1990-04-30 1990-04-30 Rapportgenaues zuschneiden
DEP4013837.2 1990-04-30

Publications (1)

Publication Number Publication Date
WO1991017029A1 true WO1991017029A1 (fr) 1991-11-14

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ID=6405427

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/000683 WO1991017029A1 (fr) 1990-04-30 1991-04-11 Coupe a dimension exacte par rapport a un dessin a repetition

Country Status (4)

Country Link
EP (1) EP0479976A1 (fr)
JP (1) JPH04506776A (fr)
DE (1) DE4013837A1 (fr)
WO (1) WO1991017029A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626896A1 (fr) * 1992-02-19 1994-12-07 Trumpf Inc. Etalonnage d'un systeme de guidage d'un poste de soudage au laser
FR2731595A1 (fr) * 1995-03-17 1996-09-20 Lectra Systemes Sa Procede pour la coupe automatique de pieces dans un tissu a motif
CN107796648A (zh) * 2017-11-22 2018-03-13 北京国能电池科技有限公司 取样器和可取样涂布机
WO2019105863A1 (fr) * 2017-11-30 2019-06-06 Held-Systems Gmbh Procédé de coupe de pièces découpées et dispositif de coupe

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6314585B1 (en) * 2001-01-29 2001-11-13 Charles D. Mann Process of making image-displaying garments
DE102008058561A1 (de) * 2008-11-21 2010-05-27 Caroline Glasow Verfahren zur Herstellung von zwei oder mehr Schnittteilen
JP4592808B1 (ja) * 2009-06-24 2010-12-08 有限会社ナムックス 裁断装置
CN107009412B (zh) * 2017-04-12 2019-05-28 广东工业大学 一种证件照自动裁剪方法、装置以及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764775A (en) * 1972-01-19 1973-10-09 Hughes Aircraft Co Error compensation in tool movement over intermittently advanced work support surface
FR2357680A1 (fr) * 1976-07-09 1978-02-03 Hughes Aircraft Co Procede et appareil de mesure de dessins repetitifs, par exemple d'etoffes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764775A (en) * 1972-01-19 1973-10-09 Hughes Aircraft Co Error compensation in tool movement over intermittently advanced work support surface
FR2357680A1 (fr) * 1976-07-09 1978-02-03 Hughes Aircraft Co Procede et appareil de mesure de dessins repetitifs, par exemple d'etoffes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626896A1 (fr) * 1992-02-19 1994-12-07 Trumpf Inc. Etalonnage d'un systeme de guidage d'un poste de soudage au laser
EP0626896A4 (en) * 1992-02-19 1994-12-14 Trumpf Inc. Laser work station guidance system calibration.
FR2731595A1 (fr) * 1995-03-17 1996-09-20 Lectra Systemes Sa Procede pour la coupe automatique de pieces dans un tissu a motif
WO1996028985A1 (fr) * 1995-03-17 1996-09-26 Lectra Systemes Procede pour la coupe automatique de pieces dans un tissu a motif
US5975743A (en) * 1995-03-17 1999-11-02 Lectra Systems Method for automatically cutting portions of a patterned fabric
CN107796648A (zh) * 2017-11-22 2018-03-13 北京国能电池科技有限公司 取样器和可取样涂布机
WO2019105863A1 (fr) * 2017-11-30 2019-06-06 Held-Systems Gmbh Procédé de coupe de pièces découpées et dispositif de coupe
US11919188B2 (en) 2017-11-30 2024-03-05 Hefa Holding Gmbh Method for cutting cut parts and cutting device

Also Published As

Publication number Publication date
JPH04506776A (ja) 1992-11-26
EP0479976A1 (fr) 1992-04-15
DE4013837A1 (de) 1991-10-31

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