EP0230552A2 - Méthode et appareillage pour couper des panties avec des formes différentes - Google Patents

Méthode et appareillage pour couper des panties avec des formes différentes Download PDF

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Publication number
EP0230552A2
EP0230552A2 EP86116343A EP86116343A EP0230552A2 EP 0230552 A2 EP0230552 A2 EP 0230552A2 EP 86116343 A EP86116343 A EP 86116343A EP 86116343 A EP86116343 A EP 86116343A EP 0230552 A2 EP0230552 A2 EP 0230552A2
Authority
EP
European Patent Office
Prior art keywords
template
cut
coding
memory
holes
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.)
Withdrawn
Application number
EP86116343A
Other languages
German (de)
English (en)
Other versions
EP0230552A3 (fr
Inventor
Wolfgang Bruder
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.)
Duerkopp Systemtechnik GmbH
Original Assignee
Duerkopp Systemtechnik 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 Duerkopp Systemtechnik GmbH filed Critical Duerkopp Systemtechnik GmbH
Publication of EP0230552A2 publication Critical patent/EP0230552A2/fr
Publication of EP0230552A3 publication Critical patent/EP0230552A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0605—Cut advances across work surface

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method.
  • a device for automatic cutting of goods from a sheet-like textile material according to the preamble of claim 1 (DE-AS 22 65 123), in which a rotating tool controlling the cutting tool of a coordinate cutting machine optically scans the contour of a template when before the cutting process said template was placed on the spread material to be cut. Scanning an arbitrarily designed contour is time-consuming and there are limits to reproducibility if incisions are made that are transverse to the contour.
  • a photoelectric scanning device for controlling a coordinate cutting machine that can be braked in front of the direction change points of the pattern template (DE-AS 23 25 389) is known, which is suitable for a coordinate cutting machine operating at high driving speed. Since the contour of the pattern template must also be scanned before cutting in this cutting machine, the rational operation of the cutting system is negatively influenced by the time required for this. Incisions directed transversely to the contour course cannot be detected exactly by this scanning device either, which is why the degree of reproducibility drops.
  • the invention has for its object to develop a method by which an optosensory position detection and identification of any pattern placed anywhere on the material to be cut is made possible before the automatic cutting of a part from the flat material to be cut, and to provide a device for carrying out the method , with which the movement of the cutting tool to be carried out in two coordinates can be carried out with high accuracy, which depends only on the quality of the coordinate cutting machine, and in a short time.
  • a further, very advantageous application of the method according to the invention lends itself to the automatic cutting of patterned, flat-like textile material, the pattern of which is checked, strips and the like. having.
  • the top of the template must also be provided with markings that allow the sample to be placed on the material to be cut, so that pattern-cutting from the textile material is subsequently ensured.
  • the device according to the invention immediately informs the cutting tool which pattern template has just been recognized with regard to its contour and its position on the material to be cut, and the cutting tool receives the contour and the current position of the sample template which are necessary for its movement to be carried out in two coordinates Control commands.
  • FIGS. 1 to 11 An exemplary embodiment which is particularly designed for cutting out parts by means of a coherent high-pressure jet of a water jet cutting system is explained with reference to FIGS. 1 to 11.
  • FIG. 1 shows a coordinate cutting machine (1) known per se, the cutting tool (32) of which essentially consists of a nozzle which can be formed by suitable mechanical training, e.g. is movable in two coordinates by a slide that can be moved in two directions.
  • a coherent high-pressure jet preferably a hair-fine water jet with a diameter of 0.1 to 0.3 mm and a pressure of up to 4000 bar, emerges from the nozzle and is directed onto the material to be cut, e.g. a leather skin strikes and thus cuts out a part (2) from the material to be cut (5) according to a predetermined contour.
  • An electronic camera (11) for example a line-resolving or a surface-resolving camera, is arranged in front of the cutting point and detects a detection surface (31) on the work table (33) optically.
  • a detection surface (31) on the work table (33) optically.
  • the latter can be made from cardboard, from plate-shaped plastic or from sheet metal.
  • Each template (3) has a coding that characterizes it, which consists of at least two holes (7).
  • a hole (7) in FIG. 2, 4 and 6 its center of gravity is designated P1 has a small diameter, the other hole (7) or the other holes (7) has a larger diameter. The diameters are determined by the resolution of the camera (11).
  • the holes (7) provided with a defined diameter are arranged in a grid with the same spacing (see FIG. 4), the defined hole spacing "a" being known to a central processor (6).
  • the holes (7) belonging to each possible coding can, according to FIGS. 2, 4 and 6, on a straight line or, according to FIG. 3, on two intersecting ones Straight lines or be arranged on at least two parallel straight lines.
  • each of the sample templates formed there has the smaller hole (7), whose center of gravity is identified by P1.
  • the upper template (3) also has two holes (7) with a larger diameter.
  • the number 20 was assigned to the middle hole belonging to this coding, the number 21 to the top hole.
  • the binary value corresponding to this coding results from 1 ⁇ 21 + 1 ⁇ 20 and is 11.
  • the decimal number corresponding to this binary value is 3, the decimal number being assigned to the “name” of the respective template (3).
  • the template (3 ') is characterized by a code that has only one hole (7) with a larger diameter, the point in the center of the grid between the large and the small hole (7) is not occupied by a hole.
  • the binary value characterizing the template (3 ′) thus results from 1 ⁇ 21 + 0 ⁇ 20 and amounts to 10.
  • This binary value corresponds to the decimal number 2, which is assigned to the “name” of the template (3 ′).
  • the template (3 ") is characterized by a code which also has only one hole (7) with a larger diameter, the upper point corresponding to the number 2 1 in the grid not being occupied by a hole. This results in the template ( 3 ") characterizing binary value from 0 ⁇ 21 + 1 ⁇ 20 and amounts to 01.
  • This binary value corresponds to the decimal number 1, which is assigned to the" name "of the template (3").
  • each A template can be named with a decimal number corresponding to its coding and derived from the respective binary value. It does not matter at which point in the template the coding holes are provided.
  • the holes (7) are deposited on the underside (8) of the template (3) with a black cover strip (9) (Fig. 5), the black color for a with respect to the top (10) of the template (3)
  • Sufficient contrast ratio ensures that an adjustable threshold switch (14), which belongs to a digital image memory (12), can be reliably recognized by analog or digital setting.
  • the center of gravity of the small hole (7) (designated P1 in FIG. 2) represents the template origin. The latter is of crucial importance in the recognition of any template (3).
  • a so-called machine zero point MN is defined, which serves as the reference point for the spacing of the center of gravity of each hole (7) belonging to the coding.
  • the coding of a template (3) shown in FIG. 11 is implemented as a so-called bar coding.
  • the area center of gravity P1 of, for example, the smaller area (37) corresponds to the template origin, and the areas (37) provided above it - like the holes (7) mentioned above - are arranged in the grid while maintaining the same spacing.
  • the surfaces (37) are applied in a suitable manner to the top (10) of the relevant template (3), in such a way that they are largely permanent against abrasion and Like.
  • the electronic camera (11) belongs to a template identification device (4), by means of which the flawless optosensory position detection and identification of each template (3) is made possible, whereby for the subsequent cutting it is assumed that the contour data of the relevant template (3) are stored in a known manner in the template program memory belonging to the CNC control of the coordinate cutting machine (1).
  • the circuit structure of the digital image memory (12) can be seen from FIG. 9 and is explained in more detail in the subsequent description of the mode of operation of the device according to the invention. 10
  • the digital image memory (12), the central processor (6), a program memory (27) for the decoding program, a working memory (28) and a data transmission system (29) are connected to one another by a bidirectional data bus (30).
  • the data collected in the digital image memory (12) are analyzed according to the flow chart according to FIG. 8 for circular areas or also rectangular areas, and the area center of gravity of all holes (7) or areas (37) belonging to the coding of the relevant template 3 is determined.
  • the decoding and 8 is triggered by entering the program start conditions in an alphanumeric keyboard (25) which, like a display (26), is connected to the processor (6).
  • the digitized image of the detection surface (31) is shown on the display (26).
  • the centroids detected by the image decoding system (13) are converted into direct coordinate masses Y2 ′, X2 ′ Y1 ′ , X1 '(see. Fig. 2) converted.
  • the diameter sizes of the holes (7) and the contents of the surfaces (37) are determined and the new reference axes X ′ and Y ′ (see FIG. 2) are determined by the coordinate mass of the center of gravity detected.
  • the center of gravity of the smaller hole (7) or the relevant surface (37) defines the template zero point, while the position of the larger hole / the larger holes (in Fig. 2 e.g.
  • the processor (6) determines the angle ⁇ , the leg of which represents the distance and form the reference axis X '.
  • the processor (6) sets the variable L3 to a value corresponding to the angle ⁇ and furthermore assigns the variables L1 and L2 the coordinate mass corresponding to the center of gravity of all holes (7) or surfaces (37) belonging to the coding, which correspond to each other after a corresponding shift of the template zero point by placing the template (3) anywhere in the material to be cut (5).
  • the variables L1, L2 and L3 which have just been determined and the "name" characterizing the relevant template (3) are communicated to the CNC controller (38) of the coordinate cutting machine (1) via the data transmission system (29).
  • the subroutine corresponding to its contour is called, which was previously in the the template storage belonging to the CNC control (38) was stored in terms of data.
  • the cutting tool (32) is now in a position to cut out the part (2) corresponding to the previously identified template (3) from the material to be cut (5), depending on it by the coordinate dimensions X1 '+ B and Y1' + A shifted and rotated by the angle ⁇ . As already explained, it is not necessary to scan the contour of the relevant template (3) before cutting out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Engineering & Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Image Analysis (AREA)
  • Control Of Cutting Processes (AREA)
EP19860116343 1985-12-14 1986-11-25 Méthode et appareillage pour couper des panties avec des formes différentes Withdrawn EP0230552A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3544251 1985-12-14
DE19853544251 DE3544251A1 (de) 1985-12-14 1985-12-14 Verfahren und vorrichtung zum selbsttaetigen zuschneiden von teilen aus flaechigem naehgut nach mit unterschiedlichen konturen versehenen mustervorlagen auf einer koordinaten-schneidmaschine

Publications (2)

Publication Number Publication Date
EP0230552A2 true EP0230552A2 (fr) 1987-08-05
EP0230552A3 EP0230552A3 (fr) 1989-01-11

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ID=6288437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860116343 Withdrawn EP0230552A3 (fr) 1985-12-14 1986-11-25 Méthode et appareillage pour couper des panties avec des formes différentes

Country Status (4)

Country Link
US (1) US4901359A (fr)
EP (1) EP0230552A3 (fr)
JP (1) JPS62156354A (fr)
DE (1) DE3544251A1 (fr)

Cited By (5)

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FR2659264A1 (fr) * 1990-03-06 1991-09-13 Flandres Manufacture Broderies Dispositif pour la decoupe de pieces detourees depuis une feuille en materiau souple.
WO1991017028A1 (fr) * 1990-04-30 1991-11-14 Krauss U. Reichert Gmbh + Co. Kg Spezialmaschinenfabrik Procede de decoupage d'une piece
EP0750048A2 (fr) * 1995-06-22 1996-12-27 Dürkopp Adler Aktiengesellschaft Procédé pour la coupe ou le poinçonnage de pièces dans les peaux d'animaux
WO2022032365A1 (fr) * 2020-08-13 2022-02-17 Audaces Automação E Informática Industrial Ltda Système et procédé de paramétrage automatique pour machine de coupe multicouches avec lame vibrante

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DE3544251A1 (de) 1987-06-19
JPS62156354A (ja) 1987-07-11
DE3544251C2 (fr) 1988-06-09
EP0230552A3 (fr) 1989-01-11
US4901359A (en) 1990-02-13

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