EP0316587A2 - Contour cut - Google Patents

Contour cut Download PDF

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Publication number
EP0316587A2
EP0316587A2 EP88117201A EP88117201A EP0316587A2 EP 0316587 A2 EP0316587 A2 EP 0316587A2 EP 88117201 A EP88117201 A EP 88117201A EP 88117201 A EP88117201 A EP 88117201A EP 0316587 A2 EP0316587 A2 EP 0316587A2
Authority
EP
European Patent Office
Prior art keywords
cutting
segment
cutting area
cut
pallet
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.)
Granted
Application number
EP88117201A
Other languages
German (de)
French (fr)
Other versions
EP0316587B1 (en
EP0316587A3 (en
Inventor
Wolfgang Bruder
Klaus Biervert
Jürgen Meybrink
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 Adler AG
Original Assignee
Duerkopp Systemtechnik GmbH
Duerkopp Adler AG
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, Duerkopp Adler AG filed Critical Duerkopp Systemtechnik GmbH
Publication of EP0316587A2 publication Critical patent/EP0316587A2/en
Publication of EP0316587A3 publication Critical patent/EP0316587A3/en
Application granted granted Critical
Publication of EP0316587B1 publication Critical patent/EP0316587B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
    • 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
    • B26F2001/3873—Cutting-out; Stamping-out advancing the material stepwise onto the work surface of the cutting machine
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/929—Particular nature of work or product
    • Y10S83/936—Cloth or leather
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/929—Particular nature of work or product
    • Y10S83/936—Cloth or leather
    • Y10S83/937—From continuous or wound supply
    • 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
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0529—Blanking and cutting
    • 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
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/463—Work-feed element contacts and moves with work
    • Y10T83/4632—Comprises a work-moving gripper
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6579—With means to press work to work-carrier
    • 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
    • Y10T83/889—Tool with either work holder or means to hold work supply
    • Y10T83/896—Rotatable wound package supply
    • Y10T83/902—Plural supply sources

Definitions

  • the invention relates to a method for cutting blanks from material webs which are moved over a cutting table and which are cut by means of cutting means, the blanks resulting in sectional position images which are shorter or longer than the cutting table.
  • the respective layer lengths must be a certain amount of safety (usually 3 to 5 cm) larger than the cut length to be cut in order to obtain a clean cut line at the end of each individual contour and also any tolerances when laying on the individual layers on the pallets or in the cutting tool setting.
  • a disadvantage of both methods is that the placement of the layers outside the cutting area results in high cycle times and the necessary safety additions require a high amount of waste for each layer, which not only increases the manufacturing costs, but also more or less depending on the type of material used causes high environmental pollution with the necessary waste disposal.
  • DE-AS 23 01 736 discloses a device for cutting a flat material, with which a more efficient way of working is possible, but the cutting method to be carried out with this device has the disadvantage that the material web always Equal distances are fed regardless of the cut to be cut. This results in long cycle times and a large machine length.
  • the invention is based on the object of specifying a method for cutting blanks from material webs with which low cycle times can be realized and which also makes it possible to dispense with the safety zone in the individual layers and to provide a device for carrying out the method.
  • FIG. 1 shows the cutting device, which essentially consists of the cutting system 2, the upstream laying station 9 and the downstream clearing station 10.
  • the laying station 9 contains the roll changer 1, a plurality of pallets P and the stationary clamping beam 5 and one or more carriages W1 ... Wn which are mounted so as to be longitudinally displaceable on the pallets P and on which the material rolls D1 ... Dn can be rotatably attached.
  • the clearing stations 10 serve to remove the cut-out patterns.
  • the portal 11 of the cutting system 2 is provided with a limit switch, not shown, which responds when a pallet P has entered the cutting area A and passes this switch.
  • material rolls D are loaded onto the trolleys W in accordance with the desired layer thickness of the material web 7.
  • the material rolls D are rotatably attached to the carriage W and these are applied to the roll changer 1 via the loading and unloading carriage 8 at each point X and material on the roll is passed under the tensioning bars 5, 6 (“threaded”).
  • the carriage W (in the drawing) is pushed to the left, so that it assumes the position X1 not previously occupied and the support point X becomes free again.
  • the entire sectional image SB is divided into individual segments S, the length of the individual segments S corresponding to the length of the cutting area A.
  • the individual patterns to be cut out are distributed within the overall sectional image SB taking into account the respective material width b in such a way that only a minimal waste remains. Possible methods for this are known from DE-OS 36 27 110. By using the method described below, it is irrelevant whether the contours to be cut extend beyond the segment boundaries SG or not, ie whether they are inside or still outside the cutting area A.
  • the cutting is started from the direction of the clearing station 10 to the laying station 9. It can be done with a double portal or as shown be worked with a mono cutting system.
  • the path-controlled cutting can be carried out by means of a conventional retraction control, wherein the individual contour data can be stored in the working memory of the control unit (how this can be done is shown in DE-OS 36 27 110 and DE-AS 23 01 736).
  • a contour cut K is made over the full width b of the material web 7, so that it is separated from the rolls.
  • this contour cut K does not take place in a straight line, but rather — as shown — encloses the patterns lying within the cutting area A, which extend beyond the respective limit of the currently cut segment S.
  • Patterns M1, M2, M3, which extend over two adjacent segments S, are therefore only partially cut out.
  • the NC-controlled cutting portal 11 moves back to the point Z of the partially cut-out pattern, which extends as far as possible into the cutting area A. This is necessary so that, as will be explained further below, the pallet P2 can be guided under the partially cut contours.
  • the stationary clamping bar 5 is lowered onto the material web 7 still connected to the rollers D, so that it is held on the laying station 9.
  • the subsequent pallet P2 is transported so far forward that it (almost) abuts the pallet P1 located in the cutting area A.
  • the fixation by means of the clamping bar 5 ensures that the material web 7 does not crease when it comes into contact with the pallet 2.
  • Both pallets P1 and P2 are moved to the right at the same speed (in the drawing) until the pallet P2 passes the limit switch (not shown) on the cutting portal 11 and the further transport is interrupted. Now it is ensured that all partially cut out patterns M1 or M2 or M3 have come to rest completely on the pallet P2.
  • the clamping bar 6 is lowered while the fixed clamping bar 5 is released, as a result of which the material web 7 is fixed on the pallet 2, and both pallets P1, P2 are transported further until the pallet P1 has completely reached the clearing station 10 and the pallet P2 in the cutting area A. is.
  • the clamping bar 6 is released and returned to its starting point.
  • the clamping bar 6 can be provided with its own drive, which runs synchronously with the feed device.
  • a suitable control program makes it possible to convert the coordinates (x / y) of the point Z into the current coordinates (xo / y) and the cutting portal 11 can move to the point at which the pattern has already been partially cut, and with the further cutting is continued again from the direction of the clearing station 10 to the laying station 9; at the end again a contour cut K over the complete Width b of the material web 7 is carried out and the process described so far begins again.
  • the cut-out patterns can be removed at the clearing station 10 during the cutting program.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laser Beam Processing (AREA)
  • Control Of Cutting Processes (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

Es wird ein Verfahren zum Schneiden von Zuschnitten aus Materialbahnen (7) beschrieben, bei welchem die Zuschnitte die länger als der Schneidtisch sind, entweder nicht oder nur teilweise ausgeschnitten und nach Vorschub des nachfolgenden Segmentes (S) oder Teilsegmentes voll aus der Kontur getrennt werden.A method for cutting blanks from material webs (7) is described, in which the blanks which are longer than the cutting table are either not or only partially cut out and are completely separated from the contour after advancement of the following segment (S) or partial segment.

Description

Die Erfindung betrifft ein Verfahren zum Schneiden von Zuschnitten aus Materialbahnen, die über einen Schneidtisch bewegt werden und die mittels Schneid­mittel geschnitten werden, wobei die Zuschnitte Schnittlagenbilder ergeben, die kürzer oder länger als der Schneidtisch sind.The invention relates to a method for cutting blanks from material webs which are moved over a cutting table and which are cut by means of cutting means, the blanks resulting in sectional position images which are shorter or longer than the cutting table.

Beim Zuschnitt dieser Materialen, beispielsweise Textilien, müssen Lagen vorgelegt werden, die der jeweiligen Schnittbildlänge entsprechen. In der Bekleidungsindustrie wird vorwiegend mit einer Lagenlänge von 4 bis 7 Meter gearbeitet, aus denen dann verschiedene Muster herausgeschnitten werden. In der Polstermöbelindustrie sind Lagen-(Schnitt­bild-)Längen von bis zu 15 Metern üblich. Die (Stoff-)Lagen werden außerhalb des Schneidtisches von Hand oder mittels einer Legemaschine auf Pa­letten ausgelegt. Daran anschließend wird jeweils eine Palette auf den Schneidtisch aufgelegt, bevor der Zuschnitt über handgeführte Stichmesser oder einer automatische Schneideinrichtung (zum Beispiel Wasser - oder Laserstrahl-Schneidanlage) vorgenommen werden kann.When cutting these materials, such as textiles, layers must be provided that correspond to the length of the cut pattern. The clothing industry mainly works with a layer length of 4 to 7 meters, from which various patterns are then cut out. Layer (sectional view) lengths of up to 15 meters are common in the upholstered furniture industry. The (fabric) layers are laid out on the pallet by hand or using a laying machine. A pallet is then placed on the cutting table before the cut can be made using hand-held stitch knives or an automatic cutting device (for example water or laser beam cutting system).

Bei diesem Verfahren ist die maximal mögliche Schnittbildlänge begrenzt durch die Länge des Schneidtisches.With this method, the maximum possible sectional image length is limited by the length of the cutting table.

Für größere Längen ist es bekannt auf dem Schneid­tisch rotierende Bürsten vorzusehen, die eine ent­sprechend längere Palette über den Schneidtisch bzw. durch den eigentlichen Schneidbereich hindurch transportieren können.
Es ist durchaus üblich, auch mehrere Lagen über­einander auszulegen und in einem Arbeitsgang zu schneiden.For longer lengths, it is known to provide rotating brushes on the cutting table, which can transport a correspondingly longer pallet over the cutting table or through the actual cutting area.
It is quite common to lay out several layers on top of one another and cut them in one operation.

Für beide Verfahren ist zu berücksichtigen, daß die jeweiligen Lagenlängen um einen gewissen Sicher­heitsbetrag (üblicherweise 3 bis 5 cm) größer sein müssen als die auszuschneidende Schnittlänge, um auch am Ende jeder einzelnen Kontur eine saubere Schnittlinie zu erhalten und außerdem etwaige Tole­ranzen beim Auf legen der einzelnen Lagen auf die Paletten oder in der Schneidwerkzeugeinstellung berücksichtigen zu können.For both methods it must be taken into account that the respective layer lengths must be a certain amount of safety (usually 3 to 5 cm) larger than the cut length to be cut in order to obtain a clean cut line at the end of each individual contour and also any tolerances when laying on the individual layers on the pallets or in the cutting tool setting.

Nachteilig an beiden Verfahren ist, daß aus dem Auflegen der Lagen außerhalb des Schneidbereichs hohe Taktzeiten resultieren und die notwendigen Sicherheitszugaben bei jeder Lage insgesamt einen hohen Verschnitt bedingen, der nicht nur die Her­stellkosten erhöht, sondern je nach Art des verwen­deten Materials auch eine mehr oder weniger hohe Umweltbelastung bei der notwendigen Abfallbeseitung verursacht.A disadvantage of both methods is that the placement of the layers outside the cutting area results in high cycle times and the necessary safety additions require a high amount of waste for each layer, which not only increases the manufacturing costs, but also more or less depending on the type of material used causes high environmental pollution with the necessary waste disposal.

Die DE-AS 23 01 736 offenbart eine Vorrichtung zum Schneiden eines Flachmaterials, mit dem eine ra­tionellere Arbeitsweise möglich ist, dem mit dieser Vorrichtung auszuführenden Zuschneidverfahren haftet aber der Nachteil an, daß die Materialbahn in immer gleichen Abständen vorgeschoben wird unabhängig von dem auszuschneidenden Zuschnitt. Dadurch erhält man lange Taktzeiten und eine große Maschinenlänge.DE-AS 23 01 736 discloses a device for cutting a flat material, with which a more efficient way of working is possible, but the cutting method to be carried out with this device has the disadvantage that the material web always Equal distances are fed regardless of the cut to be cut. This results in long cycle times and a large machine length.

Der Erfindung liegt die Aufgabe zugrunde ein Ver­fahren zum Schneiden von Zuschnitten aus Material­bahnen anzugeben mit dem niedrigen Taktzeiten reali­sierbar sind und das es zudem gestattet auf die Sicherheitszone bei den einzelnen Lagen zu verzich­ten, sowie eine Vorrichtung zu schaffen zur Durch­führung des Verfahrens.The invention is based on the object of specifying a method for cutting blanks from material webs with which low cycle times can be realized and which also makes it possible to dispense with the safety zone in the individual layers and to provide a device for carrying out the method.

Die Lösung der Aufgabe erfolgt durch die Kennzei­chenteile der Ansprüche 1 und 2. Die Unteransprüche geben sinnvolle Ausgestaltungen der Vorrichtung wieder.The problem is solved by the characterizing parts of claims 1 and 2. The subclaims give meaningful refinements of the device.

Anhand von Zeichnungen soll die Erfindung näher erläutert werden.The invention will be explained in more detail with reference to drawings.

Es zeigt:

  • Figur 1 die Ansicht einer kompletten Schneidvor­richtung.
  • Figur 2 die Draufsicht der Schneidvorrichtung nach Figur 1.
  • Figur 3 ein in einzelne Segmente unterteiltes Schnittbild.
It shows:
  • 1 shows the view of a complete cutting device.
  • FIG. 2 shows the top view of the cutting device according to FIG. 1.
  • 3 shows a sectional image divided into individual segments.

Figur 1 zeigt die Schneidvorrichtung, die im wesent­lichen aus der Schneidanlage 2, der vorgeordneten Legestation 9 und der nachgeordneten Abräumstation 10 besteht.FIG. 1 shows the cutting device, which essentially consists of the cutting system 2, the upstream laying station 9 and the downstream clearing station 10.

Die Legestation 9 beinhaltet den Rollenwechsler 1, mehrere Paletten P und den ortsfesten Klemmbalken 5 sowie ein oder mehrere über den Paletten P längs­verschiebbar gelagerte Wagen W1 ... Wn, auf denen die Materialrollen D1 ... Dn drehbar befestigt werden können.
Die Abräumstationen 10 dient zum Entnehmen der ausge­schnittenen Muster.
Das Portal 11 der Schneidanlage 2 ist mit einem nicht näher dargestellten Endlagenschalter versehen, der dann anspricht, wenn eine Palette P in den Schneid­bereich A eingefahren ist und diesen Schalter passiert.The laying station 9 contains the roll changer 1, a plurality of pallets P and the stationary clamping beam 5 and one or more carriages W1 ... Wn which are mounted so as to be longitudinally displaceable on the pallets P and on which the material rolls D1 ... Dn can be rotatably attached.
The clearing stations 10 serve to remove the cut-out patterns.
The portal 11 of the cutting system 2 is provided with a limit switch, not shown, which responds when a pallet P has entered the cutting area A and passes this switch.

Vor Beginn des Zuschnitts werden entsprechend der gewünschten Lagenstärke der Materialbahn 7, Material­rollen D auf die Wagen W geladen. Dazu werden die Materialrollen D auf den Wagen W drehbar befestigt und diese über den Be- und Entladewagen 8 jeweils an der Stelle X auf den Rollenwechsler 1 aufgebracht und auf der Rolle befindliches Material unter den Spannbalken 5, 6 hindurchgeführt ("eingefädelt"). Daran anschließend wird der Wagen W (auf der Zeich­nung) nach links geschoben, so daß er die bis dahin nicht besetzte Position X1 einnimmt und die Auflage­stelle X wieder frei wird. Mit dem zweiten Wagen wird der zuvor beschriebene Ladevorgang wiederholt und nachdem auch die zweite Stoffbahn unter den Spann­balken 5, 6 hindurchgeführt wurde, wird der Wagen W wieder (auf der Zeichnung) nach links geschoben, so daß die Auflegestelle X wieder frei wird und jetzt die Position X1 und X2 besetzt sind.Before the start of the cut, material rolls D are loaded onto the trolleys W in accordance with the desired layer thickness of the material web 7. For this purpose, the material rolls D are rotatably attached to the carriage W and these are applied to the roll changer 1 via the loading and unloading carriage 8 at each point X and material on the roll is passed under the tensioning bars 5, 6 (“threaded”). Subsequently, the carriage W (in the drawing) is pushed to the left, so that it assumes the position X1 not previously occupied and the support point X becomes free again. With the second car, the loading process described above is repeated and after the second fabric has also been passed under the tensioning beams 5, 6, the car W is again pushed (in the drawing) to the left, so that the loading point X is free again and now the Positions X1 and X2 are occupied.

Dieser Vorgang wird so lange wiederholt, bis unter den Klemmbalken 5, 6 so viele einzelne Stoffbahnen übereinander geschichtet sind, daß sie der gewünsch­ten Lagenstärke der Materialbahn 7 entsprechen. Der Klemmbalken 6 wird abgesenkt und die Material­bahn 7 auf die Palette P1 gezogen und dort fixiert. Die Länge jeder Palette entspricht mindestens der Länge des Schneidbereichs A. Zusammen mit dem Klemm­balken 6 wird die Palette P1 in den Schneidbereich A transportiert, wobei entsprechend der zurückgelegten Wegstrecke das Material von den Rollen D abgewickelt wird. Eine bekannte Kantensteuerung sorgt dabei für kantengenaues Legen.
Hat die Palette P1 ihre Endposition erreicht wird der Spannbalken 6 gelöst und in seine Ausgangsposi­tion zurückgeführt. Hiernach kann der Schneidvorgang beginnen.This process is repeated until so many individual strips of material are layered one above the other under the clamping beams 5, 6 that they correspond to the desired layer thickness of the material web 7. The clamping bar 6 is lowered and the material web 7 is drawn onto the pallet P1 and fixed there. The length of each pallet corresponds at least to the length of the cutting area A. Together with the clamping bar 6, the pallet P1 is transported into the cutting area A, the material being unwound from the rolls D in accordance with the distance traveled. A well-known edge control ensures precise laying.
When the pallet P1 has reached its end position, the clamping bar 6 is released and returned to its starting position. The cutting process can then begin.

Wie Figur 3 zeigt, wird das gesamte Schnittbild SB in einzelne Segmente S unterteilt, wobei die Länge der einzelnen Segmente S jeweils der Länge des Schneidbereichs A entspricht.
Die einzelnen auszuschneidenden Muster werden inner­halb des Gesamtschnittbildes SB unter Berücksichti­gung der jeweiligen Materialbreite b so verteilt, daß nur ein minimaler Verschnitt bleibt. Mögliche Verfahren dazu sind aus der DE-OS 36 27 110 bekannt. Durch Anwendung des nachfolgend beschriebenen Ver­fahrens ist es dabei unerheblich, ob die zu schnei­denden Konturen über die Segmentgrenzen SG hinaus­reichen oder nicht, sich also innerhalb oder noch außerhalb des Schneidbereichs A befinden.As FIG. 3 shows, the entire sectional image SB is divided into individual segments S, the length of the individual segments S corresponding to the length of the cutting area A.
The individual patterns to be cut out are distributed within the overall sectional image SB taking into account the respective material width b in such a way that only a minimal waste remains. Possible methods for this are known from DE-OS 36 27 110. By using the method described below, it is irrelevant whether the contours to be cut extend beyond the segment boundaries SG or not, ie whether they are inside or still outside the cutting area A.

Mit dem Zuschneiden wird von der Richtung der Ab­räumstation 10 zur Legestation 9 hin begonnen. Es kann wie gezeigt mit einer Doppelportal- oder aber mit einer Monoschneidanlage gearbeitet werden. Der bahngesteuerte Zuschnitt kann mittels einer üblichen Einziehsteuerung durchgeführt werden, wobei die einzelnen Konturdaten im Arbeitsspeicher des Steuer­werks gespeichert sein können (wie dies geschehen kann ist in der DE-OS 36 27 110 und der DE-AS 23 01 736 gezeigt).
Ist das Schneidportal 11 am Ende des Schneidbereichs A angelangt, wird ein Konturschnitt K über die vollständige Breite b der Materialbahn 7 durchge­führt, so daß diese von den Rollen abgetrennt wird. Dieser Konturschnitt K erfolgt aber in aller Regel nicht geradlinig sondern umschließt - wie gezeigt - die innerhalb des Schneidbereichs A liegenden Mu­ster, die über die jeweilige Grenze des momentan geschnittenen Segments S hinausreichen.The cutting is started from the direction of the clearing station 10 to the laying station 9. It can be done with a double portal or as shown be worked with a mono cutting system. The path-controlled cutting can be carried out by means of a conventional retraction control, wherein the individual contour data can be stored in the working memory of the control unit (how this can be done is shown in DE-OS 36 27 110 and DE-AS 23 01 736).
When the cutting portal 11 has reached the end of the cutting area A, a contour cut K is made over the full width b of the material web 7, so that it is separated from the rolls. As a rule, however, this contour cut K does not take place in a straight line, but rather — as shown — encloses the patterns lying within the cutting area A, which extend beyond the respective limit of the currently cut segment S.

Es ist nicht zwingend notwendig, den Konturschnitt K am Ende des Schneidbereichs auszuführen, sondern wie an Hand von Segment S2 in Figur 3 dargestellt ist, kann dies auch in der Mitte des Schneidbereichs A erfolgen, sofern durch die optimierte Musterauslage kein späterer Schnitt über die vollständige Breite b möglich sein sollte.It is not absolutely necessary to carry out the contour cut K at the end of the cutting area, but as is shown with the aid of segment S2 in FIG. 3, this can also take place in the middle of the cutting area A, provided that the later pattern cut does not result in a later cut across the complete area Width b should be possible.

Dazu ist es natürlich notwendig ein entsprechendes Steuerprogramm zu verwenden, dessen Erstellung einem Softwaredesigner aber keine Schwierigkeit bereiten wird. Es werden also Muster M1, M2, M3, die sich über zwei benachbarte Segmente S erstrecken nur teilweise ausgeschnitten. Hieran anschließend fährt das NC - gesteuerte Schneidportal 11 an die Stelle Z des teilweise ausgeschnittenen Musters zurück, die am weitestens in den Schneidbereich A hineinreicht. Dies ist notwendig, damit, wie weiter unten erläu­tert wird, die Palette P2 unter die teilweise ge­schnittenen Konturen geführt werden kann.To do this, it is of course necessary to use an appropriate control program, the creation of which will not be a problem for a software designer. Patterns M1, M2, M3, which extend over two adjacent segments S, are therefore only partially cut out. Subsequently, the NC-controlled cutting portal 11 moves back to the point Z of the partially cut-out pattern, which extends as far as possible into the cutting area A. This is necessary so that, as will be explained further below, the pallet P2 can be guided under the partially cut contours.

Der ortsfeste Klemmbalken 5 wird auf die noch mit den Rollen D verbundene Materialbahn 7 abgesenkt, so daß diese an der Legestation 9 festgehalten wird. Die nachfolgende Palette P2 wird so weit nach vorne transportiert, daß sie (fast) an die sich im Schneidbereich A befindenden Palette P1 anstößt. Durch die Fixierung mittels des Klemmbalkens 5 ist sichergestellt, daß die Materialbahn 7 bei Berührung mit der Palette 2 keine Falten wirft. Beide Paletten P1 und P2 werden mit gleicher Geschwindigkeit (auf der Zeichnung) nach rechts bewegt, und zwar so weit, bis die Palette P2 den am Schneidportal 11 befind­lichen (nicht gezeigten) Endschalter passiert und der Weitertransport unterbrochen wird. Jetzt ist sichergestellt, daß alle teilweise ausgeschnittenen Muster M1 oder M2 oder M3 vollständig auf der Pa­lette P2 zu liegen gekommen sind.The stationary clamping bar 5 is lowered onto the material web 7 still connected to the rollers D, so that it is held on the laying station 9. The subsequent pallet P2 is transported so far forward that it (almost) abuts the pallet P1 located in the cutting area A. The fixation by means of the clamping bar 5 ensures that the material web 7 does not crease when it comes into contact with the pallet 2. Both pallets P1 and P2 are moved to the right at the same speed (in the drawing) until the pallet P2 passes the limit switch (not shown) on the cutting portal 11 and the further transport is interrupted. Now it is ensured that all partially cut out patterns M1 or M2 or M3 have come to rest completely on the pallet P2.

Der Klemmbalken 6 wird abgesenkt, während der fest­stehende Klemmbalken 5 gelöst wird, wodurch die Materialbahn 7 auf der Palette 2 fixiert wird, und beide Paletten P1, P2 werden weiter transportiert, bis Palette P1 vollständig an der Abräumstation 10 und Palette P2 im Schneidbereich A angelangt ist. Der Klemmbalken 6 wird gelöst und an seinen Aus­gangspunkt zurückgeführt. Der Klemmbalken 6 kann mit einem eigenen Antrieb versehen sein, der synchron mit der Vorschubeinrichtung läuft. Durch ein ge­eignetes Steuerprogramm ist es möglich, die Koordi­naten (x/y) des Punktes Z in die jetzigen Koordi­naten (xo/y) umzurechnen und das Schneidportal 11 kann an die Stelle, an der das Muster bereits teil­weise geschnitten ist, fahren und mit dem weiteren Zuschnitt wird wieder von Richtung der Abräumstation 10 zur Legestation 9 hin fortgefahren; an dessen Ende erneut ein Konturschnitt K über die vollständige Breite b der Materialbahn 7 durchgeführt wird und der bisher beschriebene Vorgang erneut beginnt.The clamping bar 6 is lowered while the fixed clamping bar 5 is released, as a result of which the material web 7 is fixed on the pallet 2, and both pallets P1, P2 are transported further until the pallet P1 has completely reached the clearing station 10 and the pallet P2 in the cutting area A. is. The clamping bar 6 is released and returned to its starting point. The clamping bar 6 can be provided with its own drive, which runs synchronously with the feed device. A suitable control program makes it possible to convert the coordinates (x / y) of the point Z into the current coordinates (xo / y) and the cutting portal 11 can move to the point at which the pattern has already been partially cut, and with the further cutting is continued again from the direction of the clearing station 10 to the laying station 9; at the end again a contour cut K over the complete Width b of the material web 7 is carried out and the process described so far begins again.

Während des Schneidprogramms können an der Abräum­station 10 die ausgeschnittenen Muster entfernt werden.The cut-out patterns can be removed at the clearing station 10 during the cutting program.

In einer weiteren Ausgestaltung der Erfindung ist es denkbar den Transport der Paletten P von der Abräum­station 10 zur Legestation 9 unterhalb der Schneid­vorrichtung vorzunehmen, so daß ein kontinuierlicher Umlauf von mindestens 4 Paletten erfolgen kann, was die Taktzeiten weiter reduziert.In a further embodiment of the invention, it is conceivable to transport the pallets P from the clearing station 10 to the laying station 9 below the cutting device, so that a continuous circulation of at least 4 pallets can take place, which further reduces the cycle times.

Claims (4)

1. Verfahren zum Schneiden von Zuschnitten aus Materialbahnen, die über einen Schneidtisch bewegt werden und die mittels Schneidmittel geschnitten werden, wobei die Zuschnitte Schnitt­lagenbilder ergeben, die kürzer oder länger als der Schneidtisch sind, dadurch gekennzeichnet, daß
- die Schnittlagenbilder unter Berücksichtigung der jeweiligen Materialbahnbreite in Segmente, die der Tischlänge des Schneidtisches entspre­chen, aufgeteilt werden,
- der Zuschnitt, welcher in ein nachfolgendes Segment hineinreicht, wird entweder im ersten Segment nur teilweise ausgeschnitten, so daß nach Vorschub des nachfolgenden Segmentes die volle Zuschnittkontur ausgeschnitten wird, oder im ersten Segment nicht ausgeschnitten, so daß erst nach Vorschub des nachfolgenden Segmentes oder Teilsegmentes der Zuschnitt in einem Durchgang voll aus seiner Kontur getrennt wird,
- die Zuschnitte werden so auf der Materialbahn verteilt, daß auf und zwischen den einzelnen Segmenten die Schnittbilder ohne wesentlichen Verschnitt aneinandergereiht sind.1. A method for cutting blanks from material webs which are moved over a cutting table and which are cut by means of cutting means, wherein the blanks result in sectional position images which are shorter or longer than the cutting table, characterized in that
- the sectional layer images are divided into segments that correspond to the table length of the cutting table, taking into account the respective material web width,
- The blank, which extends into a subsequent segment, is either only partially cut out in the first segment, so that the full contour is cut out after the next segment has been fed, or not cut out in the first segment, so that only after the next segment or sub-segment has been advanced the blank is completely separated from its contour in one pass,
- The blanks are distributed on the material web in such a way that the sectional images are lined up on and between the individual segments without any significant waste. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß
- vor der Schneidanlage (2) eine der gewünschten Lagendicke der Materialbahn (7) entsprechende Anzahl von Materialrollen (D) anordbar ist,
- die Materialrollen (D) auf längsverschiebbar gelagerten Wagen (W) drehbar zu befestigen sind,
- die Wagen (W) auf auf dem Rollenwechsler (1) angeordneten Schienen (3 und 4) aufsetzbar sind,
- zwischen der ersten Materialrolle (D₁) bzw. dem ersten Wagen (W₁) und dem Schneidbereich (A) zwei Spannbalken (5, 6) angeordnet ist, unter denen das Material jeder Rolle (D) hindurch­führbar ist, wobei die Materialbahn (7) mittels des in den Schneidbereich (A) transportierbaren Spannbalkens (6) auf der vor dem Schneidbereich (A) angeordneten Palette (P₁) fixierbar ist, und
- die Palette (P₁) in den Schneidbereich (A) ver­schiebbar ist.2. Device for performing the method according to claim 1, characterized in that
a number of material rolls (D) corresponding to the desired layer thickness of the material web (7) can be arranged in front of the cutting system (2),
- The material rolls (D) are rotatably fastened on carriages (W) which are mounted in a longitudinally displaceable manner,
- The carriages (W) can be placed on rails (3 and 4) arranged on the reel changer (1),
- Between the first roll of material (D₁) or the first carriage (W₁) and the cutting area (A) two clamping bars (5, 6) is arranged, under which the material of each roll (D) can be passed, the material web (7) by means of the clamping bar (6), which can be transported into the cutting area (A), can be fixed on the pallet (P 1) arranged in front of the cutting area (A), and
- The pallet (P₁) in the cutting area (A) is displaceable. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeich­net, daß unterhalb der Wagen (W) mehrere Paletten (P₁ P₂ ...) stationiert sind und jeweils die­jenige, die in den Schneidbereich (A) eingefahren ist durch eine neue ersetzbar ist.3. Apparatus according to claim 2, characterized in that below the carriage (W) a plurality of pallets (P₁ P₂ ...) are stationed and in each case the one which is moved into the cutting area (A) can be replaced by a new one. 4.Vorrichtung nach Anspruch 2, dadurch gekennzeich­net, daß der Rollenwechsler (1) mit mindestens einer entlang seiner Längsseite verschiebbar gelagerten Auf- und Abladeeinrichtung (8) in Wirkverbindung steht.4.Device according to claim 2, characterized in that the reel changer (1) is in operative connection with at least one displaceably mounted loading and unloading device (8) along its longitudinal side.
EP88117201A 1987-11-19 1988-10-15 Contour cut Expired - Lifetime EP0316587B1 (en)

Applications Claiming Priority (2)

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DE3739201A DE3739201C3 (en) 1987-11-19 1987-11-19 Contour cut
DE3739201 1987-11-19

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EP0316587A2 true EP0316587A2 (en) 1989-05-24
EP0316587A3 EP0316587A3 (en) 1991-08-21
EP0316587B1 EP0316587B1 (en) 1996-02-07

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JP (1) JP2779629B2 (en)
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Also Published As

Publication number Publication date
JP2779629B2 (en) 1998-07-23
EP0316587B1 (en) 1996-02-07
EP0316587A3 (en) 1991-08-21
US5146821A (en) 1992-09-15
DE3739201C3 (en) 1996-06-13
JPH01246096A (en) 1989-10-02
DE3739201C2 (en) 1989-09-21
US4972745A (en) 1990-11-27
DE3854988D1 (en) 1996-03-21
DD283577A5 (en) 1990-10-17
DE3739201A1 (en) 1989-06-01

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