EP3354426B1 - Position correction for registration marks when cutting corrugated cardboard - Google Patents

Position correction for registration marks when cutting corrugated cardboard Download PDF

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Publication number
EP3354426B1
EP3354426B1 EP18152293.9A EP18152293A EP3354426B1 EP 3354426 B1 EP3354426 B1 EP 3354426B1 EP 18152293 A EP18152293 A EP 18152293A EP 3354426 B1 EP3354426 B1 EP 3354426B1
Authority
EP
European Patent Office
Prior art keywords
register mark
corrugated cardboard
cut
web
registration mark
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.)
Active
Application number
EP18152293.9A
Other languages
German (de)
French (fr)
Other versions
EP3354426A1 (en
Inventor
Friedrich Bayer
Christian Mühlbach
Frank HIBINGER
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.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Corrugated Maschinen und Anlagenbau 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 BHS Corrugated Maschinen und Anlagenbau GmbH filed Critical BHS Corrugated Maschinen und Anlagenbau GmbH
Publication of EP3354426A1 publication Critical patent/EP3354426A1/en
Application granted granted Critical
Publication of EP3354426B1 publication Critical patent/EP3354426B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26D5/20—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
    • B26D5/32—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 with the record carrier formed by the work itself
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D11/00—Combinations of several similar cutting apparatus
    • 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
    • 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
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2822—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard involving additional operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2831—Control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll

Definitions

  • the invention relates to a corrugated board plant for producing sheets of corrugated board. Furthermore, the invention is directed to a method for producing sheets of corrugated cardboard.
  • Corrugated cardboard systems are generally known from the prior art.
  • a corrugated board manufacturing device with a CCD camera for detecting press marks on a web of corrugated board laminated on one side and an image processing unit that detects a distance between adjacent press marks.
  • a cross-cutting device comprises a CCD camera to detect press marks on a corrugated board web laminated on both sides, and an image processing unit capable of calculating a position of the press marks.
  • the cross-cutting device also has a control unit that is activated when one of the press marks deviates from a cutting position or corrugation tip position of the web of corrugated board laminated on both sides. If a deviation of a cutting position and a corrugation tip is detected, the control unit changes the actuation of the cutting elements.
  • the system includes a rotary cutting device with knife rollers arranged in pairs or a knife roller and a counter roller. Brands cooperate with a sensor and control system to align a printed image and/or markings on an outside after folding and cutting operations. There are sensors that control the cutting device. Detected locations of the marks are compared to optimal locations by the control system. Should an upstream or downstream arrangement of the markers be recognized, cutting elements are displaced upstream or downstream accordingly.
  • the U.S. 3,058,869 discloses a corrugator in which a cutting position is aligned with ends of each printed image. Marks are placed on an outer sheet to indicate the cutting position. The marks are detected and it is ensured that the cutting positions fall between print images. The conveying speed of the web of corrugated board can be changed accordingly for this purpose.
  • a corrugated cardboard sheets are produced by means of a rotary cross-cutting device.
  • a leading end of a sheet of corrugated board is captured by a camera.
  • a positional relationship between a printed mark and a width margin is obtained.
  • the invention is based on the object of creating an improved corrugated board plant.
  • the corrugated board system should be able to produce individual sheets of corrugated board with extreme precision from a web of corrugated board, in particular an endless web. A corresponding procedure is also to be provided.
  • the at least one detected registration mark triggers the registration mark cutting device.
  • the essence of the invention lies in the fact that an automatic or independent position correction of the at least one registration mark section is carried out by means of the registration mark section position correction device, if necessary, which is extremely economical. In particular, the position is corrected while the corrugated board system is running.
  • the at least one registration mark cut has repeatedly been offset in or against the transport direction of the web of corrugated cardboard or sheets of corrugated cardboard, which is avoided according to the invention.
  • the registration mark cutting device directly or immediately implements the position correction of the at least one registration mark cut in or against the transport direction of the web of corrugated board or corrugated board sheets, so that the subsequent registration mark cuts or Corrugated cardboard sheets correspond exactly to a target specification.
  • the corrugated cardboard sheets produced have a length in the transport direction that corresponds exactly to the target specification.
  • the registration mark cutting device can preferably be actuated independently of a fixed cutting length.
  • the at least one registration mark is advantageously arranged at the edge in relation to the web of corrugated cardboard. It is advantageous if the at least one registration mark is printed on the web of corrugated cardboard. It is formed, for example, by at least one bar or a bow tie. Alternatively, the at least one registration mark is formed, for example, by at least one slot, an RFID component or the like. Conveniently, a variety of registration marks is available in the direction of transport Corrugated web or corrugated sheets are spaced from each other.
  • the registration mark detection device advantageously works without contact. It is preferably an optical registration mark detection device.
  • the registration mark cutting device is designed as a cross cutting device. It is expedient if this has at least one rotationally drivable roller with at least one radially running blade.
  • the control arrangement is preferably an electrical or electronic control arrangement.
  • the signal connections are, for example, wireless or wired. They preferably exist at least temporarily. Signals can advantageously be transmitted via the signal connections.
  • the control arrangement has a direct or indirect signal connection to the registration mark cutting device and/or to the registration mark detection device.
  • the register mark cut position correction device is part of the control arrangement. Alternatively, this is part of the registration mark cutting device, for example.
  • the registration mark cutting device advantageously comprises at least two registration mark cutting devices for cutting partial webs of the web of corrugated board. It is advantageous if the registration mark detection device has at least two registration mark detection devices Detecting at least one registration mark on partial webs of the web of corrugated board.
  • the web of corrugated board production arrangement is preferably capable of producing multi-ply, in particular three-ply, five-ply or seven-ply, webs of corrugated board.
  • it favorably comprises at least one device for producing a web of corrugated cardboard laminated on one side.
  • the web of corrugated board preferably has at least one smooth cover web, one smooth liner web and one corrugated web arranged between them.
  • the register mark cut detection arrangement is advantageously designed as an optical register mark cut detection arrangement.
  • Each registration mark cutting device of the registration mark cutting device is preferably followed by at least one registration mark cut detection device of the registration mark cut detection arrangement for detecting the at least one registration mark cut in the respective web of corrugated board.
  • the register mark cut position evaluation device is advantageously part of the control arrangement. It is preferably of an electrical or electronic nature.
  • upstream relates in particular to a transport direction of the web of corrugated board or the sheets of corrugated board.
  • the registration mark cut detection arrangement is designed as a camera arrangement.
  • Other designs are alternatively possible.
  • the register mark cut detection devices assigned to the web of corrugated board according to dependent claim 3 are advantageously arranged opposite one another.
  • the web of corrugated board is preferably passed between them.
  • the image processing unit according to dependent claim 5 advantageously uses a corresponding image processing program.
  • the recorded image of the at least one register mark section is preferably processed there.
  • the register mark cut position correction device is directly or indirectly signal-connected to the register mark cut position evaluation device and the register mark cutting device.
  • a setpoint or a tolerance can be specified for the register mark intersection position correction device.
  • a corrugated board plant as in 1 is illustrated in a simplified manner in its entirety, comprises a web of corrugated board production arrangement 1 for producing an endless web of corrugated board 2 .
  • a first web of material 6 is fed from a first unwinding device 5 to the device 3 for producing the web of corrugated board 4 laminated on one side.
  • a preheating device 18 for preheating the first web of material 6 is located between the first unwinding device 5 and the device 3 for producing the web of corrugated board 4 laminated on one side.
  • the first web of material 6 is brought together in the device 3 for producing the web of corrugated board 4 laminated on one side with a second web of material 7 which is unwound by a second unwinding device 8 .
  • the webs of material 6, 7 are preferably endless.
  • the unwinding devices 5, 8 advantageously have corresponding splicing units (not shown).
  • the second web of material 7 is guided through to produce a corrugation between a first and second corrugating roller 9, 10, which are arranged adjacent to one another and rotate about their axes during corrugation. After this passage, the second web of material 7 is in the form of a corrugated web 11 .
  • Tips of the corrugated web 11 are then glued by a gluing device 12, which is part of the device 3 for producing the corrugated web 4 laminated on one side.
  • the corrugated web 11 provided with glue and the first material web 6 are then formed in the device 3 for producing the single-faced corrugated web 4 in a gap between the first corrugating roller 9, which is arranged above the second corrugating roller 10, and a pressing device 13 the single-faced web of corrugated board 4 is compressed and adhesively bonded to one another.
  • the one-side-laminated corrugated cardboard web 4 formed from the material webs 6, 7 is then fed out of the device 3 for producing the single-sided corrugated cardboard web 4 and guided around a deflection roller 14 to a preheating device 15 of the corrugated cardboard web production arrangement 1.
  • the corrugated cardboard web production arrangement 1 also has a third unwinding device 16 for a third, preferably endless, material web 17.
  • the third material web 17 forms a laminating web for the corrugated cardboard web 4 laminated on one side.
  • the third material web 17 is also fed to the preheating device 15.
  • the preheating device 15 has two heatable heating rollers 19, 20 arranged one above the other.
  • the web of corrugated board 4 laminated on one side and the third web of material 17 run at a distance one above the other in the preheating device 15 and touch the respective heating roller 19 or 20 in some areas on the outside.
  • the corrugated board web production arrangement 1 comprises a gluing unit 21 which is arranged downstream of the preheating device 15 .
  • the gluing unit 21 has a gluing roller 22 which is partially immersed in a glue bath 23 .
  • the corrugated web 4 laminated on one side is located with its corrugated web 11 in contact with the gluing roller 22, so that glue is transferred from the glue bath 23 to the corrugated web 11, in particular to its tips.
  • the corrugated web production arrangement 1 also has a heating and pressing device 24 which is arranged downstream of the gluing unit 21 .
  • the heating presser 24 comprises a horizontal table 25 provided with heating elements (not shown). Above the table 25, the heating presser 24 has an endless press belt 27 guided around rollers 26. Between the press belt 27 and the table 25, a pressure gap 28 is formed, through which the one-sidedly laminated web of corrugated board 4 and the third material web 17 are transported and pressed against one another there.
  • the endless web of corrugated cardboard 2 is formed, which, according to this preferred embodiment, has three layers and is transported continuously in a transport direction 29 .
  • the corrugator Downstream of the heating pressing device 24 with respect to the transport direction 29, the corrugator has a short cross-cutter 30.
  • the short cross-cutter 30 has a knife cylinder 31 and an anvil cylinder 32 arranged below the same.
  • the blade cylinder 31 and the counter-cylinder 32 are rotatably mounted, with their axes of rotation running parallel to one another and perpendicular to the transport direction 29 of the endless web of corrugated board 2 .
  • the blade cylinder 31 has a cylinder jacket on which a blade (not shown) is attached with a cutting edge.
  • the counter-cylinder 32 also has a cylinder jacket on which a counter-knife (not shown) with a cutting edge is attached.
  • a series of counter-body elements are also arranged on the cylinder jacket of the counter-cylinder 32 and can be displaced between two radially projecting stops (not shown) fastened on the cylinder jacket.
  • the short cross cutter 30 is capable of making a cut that extends across the full width of the continuous web 2 of corrugated board.
  • the blade cylinder 31 and the counter-cylinder 32 are rotated in such a way that they or their blades interact with one another during the cutting process.
  • the short cross cutter 30 is capable of making a cut of a specified length and a specified distance from a longitudinal edge of the continuous web of corrugated fiberboard 2 .
  • the counter-body elements are selected or adjusted accordingly.
  • the blade cylinder 31 and the counter-cylinder 32 are rotated in such a way that the blade of the blade cylinder 31 interacts with the counter-body elements.
  • FIG DE 10 2004 003 560 A1 reference is made to FIG DE 10 2004 003 560 A1 referred.
  • the short transverse cutting device 30 can also have a different design or be absent.
  • the corrugated board plant Downstream of the short cross-cutting device 30 with respect to the transport direction 29, the corrugated board plant has a slitting/creating device 33, which comprises two creasing stations 34 arranged one behind the other and two longitudinal cutting stations 35 arranged one behind the other.
  • Each creasing station 34 has two creasing tools 36 arranged one above the other in pairs, between which the endless web of corrugated board 2 is passed.
  • Each slitting station 35 has a rotationally drivable knife 37 which can be brought into engagement with the endless web of corrugated cardboard 2 for severing the same longitudinally.
  • the corrugated board plant Downstream of the slitting/creating device 33 in relation to the transport direction 29, the corrugated board plant comprises a diverter 38, in which an endless, longitudinally cut, first web section 39 and an endless, longitudinally cut, second web section 40 of the endless corrugated board web 2 are separated from one another become.
  • the web sections 39, 40 come from the endless web of corrugated board 2 and form endless partial webs of the endless web of corrugated board 2.
  • the corrugated board system Downstream of the diverter 38 with respect to the transport direction 29, the corrugated board system has a registration mark detection device 41 for detecting registration marks 42 ( Figures 2 to 5 ) on the endless web of corrugated cardboard 2 or the web sections 39, 40.
  • the registration mark detection device 41 has a first upper registration mark detection device 43 and a second lower registration mark detection device 44.
  • the first registration mark detection device 43 is associated with the first track section 39 for detecting registration marks 42 on the same, while the second Registration mark detection device 44 is assigned to the second web section 40 for detecting registration marks 42 on the same.
  • the first registration mark detection device 43 has two opposing first registration mark detection sensors 45 which are arranged adjacent and upstream with respect to the transport direction 29 to a first pair of guide rollers 46 for guiding the first web section 39 .
  • the first web section 39 is led through between the two first registration mark detection sensors 45 .
  • the first registration mark detection sensors 45 detect the upper side 47 and lower side 48 of the first web section 39.
  • the second registration mark detection device 44 is designed in accordance with the first registration mark detection device 43 . It comprises two second registration mark detection sensors 49 which are arranged adjacent and upstream with respect to the transport direction 29 to a second pair of guide rollers 50 for guiding the second web section 40 .
  • the second web section 40 is between the two second registration mark detection sensors 49 passed through.
  • the second registration mark detection sensors 49 detect the upper side 51 and lower side 52 of the second web section 40.
  • a registration mark cutting device 53 is arranged downstream of the registration mark detection device 41 with respect to the transport direction 29 1 again simplified and in 2 is shown in detail.
  • the registration mark cutting device 53 is arranged adjacent to the registration mark detection device 41 . It has a first registration mark cutting device 54 with a first registration mark cutting roller pair 55 for the first web section 39 and a second registration mark cutting device 56 with a second registration mark cutting roller pair 57 for the second web section 40 .
  • Each first roller 58 of the first registration mark cutting roller pair 55 carries a first cutter bar 59 which extends radially outwards and runs perpendicularly to the transport direction 29.
  • the first cutter bars 59 act to cut through the first web section 39 transversely, producing a first registration mark cut 60 ( Figures 3 to 5 ) together.
  • Each second roller 61 of the second register mark cutting roller pair 57 carries a second cutter bar 62 which extends radially outwards and runs perpendicularly to the transport direction 29.
  • the second cutter bars 62 work together to transversely cut through the second web section 40, forming a second register mark cut 63 .
  • Each registration mark cutting roller pair 55, 57 can be driven in rotation by a motor.
  • the motors rotate the rollers 58, 61 of the respective registration mark cutting roller pair 55 or 57 can be driven in rotation about their central axis.
  • first introduction roller pairs 64 Upstream in relation to the transport direction 29 to the first registration mark cutting device 54 are two first introduction roller pairs 64 for the exact introduction of the first web section 39 into the first registration mark cutting device 54 .
  • the first web section 39 is passed through the first infeed roller pairs 64 .
  • Two second pairs of introductory rollers 65 for the exact introduction of the second web section 40 into the second register mark cutting device 56 are arranged upstream in relation to the transport direction 29 to the second register mark cutting device 56 .
  • the second web section 40 is passed through the second infeed roller pairs 65 .
  • Two first pairs of delivery rollers 66 are arranged downstream of the first registration mark cutting device 54 with respect to the transport direction 29 and are used for the exact delivery of the first web section 39.
  • the first web section 39 is guided through the first pairs of delivery rollers 66.
  • Two second pairs of outfeed rollers 67 are arranged downstream of the second registration mark cutter 56 with respect to the transport device 29 and serve to precisely feed out the second web section 40.
  • the second web section 39 is guided through the second pairs of outfeed rollers 67.
  • the first registration mark cut detection device 68 is formed by two opposing first registration mark cut detection cameras 69 between which the first web section 39 is passed in the transport direction 29 .
  • the first registration mark cut detection cameras 69 capture both the upper side 47 and the lower side 48 of the first web section 39.
  • a second registration mark cut detection device 70 for detecting the second registration mark cut 63 in the second web section 40 is arranged between the second pairs of delivery rollers 67 .
  • the second register mark cut detection device 70 is formed by two opposing, second register mark cut detection cameras 71 between which the second web section 40 is passed in the transport direction 29 .
  • the second registration mark cut detection cameras 71 capture the top side 51 and bottom side 52 of the second web section 40.
  • the registration mark cut detection devices 68, 70 form a registration mark cut detection arrangement.
  • the registration mark cutters 54, 56, the registration mark cut detectors 68, 70, the infeed roller pairs 64, 65 and the outfeed roller pairs 66, 67 are conveniently arranged on a common machine frame.
  • a conveyor belt arrangement 72 is arranged downstream of the registration mark cutting device 53 .
  • the conveyor belt arrangement 72 has a first conveyor belt 73 which is guided around first rollers 74 which can be driven in rotation.
  • the first conveyor belt 73 serves to convey first sheets of corrugated board 75 which have been produced from the first web section 39 by means of the first registration mark cutting device 54 .
  • the first sheets of corrugated cardboard 75 are conveyed in a shingled manner to a first tray 76, where they are stacked to form a first stack 77.
  • the conveyor belt arrangement 72 comprises a second conveyor belt 78 which is guided around second rollers 79 which can be driven in rotation.
  • the second conveyor belt 78 serves to convey second sheets of corrugated board 80 which have been produced from the second web section 40 by means of the second registration mark cutting device 56 .
  • the second sheets of corrugated board 80 are conveyed shingled on the second conveyor belt 78 to a second tray 81 where they are stacked to form a second stack 82 .
  • the control of the registration mark cutting device 53 is explained in more detail below.
  • the web sections 39, 40 are each transported in the transport direction 29. In doing so, they pass the first registration mark detection device 43 or the second registration mark detection device 44.
  • Corresponding first registration mark signals of the registration marks 42 detected by the first registration mark detection sensors 45 on the first web section 39 are supplied to a first electronic information processing device 84 via first signal lines 83 .
  • the first information processing device 84 has a signal connection to a first control arrangement 86 via a second signal line 85 .
  • the first control arrangement 86 receives corresponding signals from the first information processing device 84 .
  • the first control arrangement 86 in turn has a signal connection via a third signal line 87 to a first drive motor 88 of the first registration mark cutting device 54 for the corresponding rotary drive of the first registration mark cutting roller pair 55 .
  • the first drive motor 88 thus receives corresponding cutting signals from the first control arrangement 86 for cutting the first web section 39 to form the first corrugated cardboard sheets 75. This cutting process is triggered by the detected registration marks 42.
  • the first register mark cut detection device 68 detects the respective first register mark cut 60 that is generated.
  • the first register mark cut position evaluation device 90 evaluates whether the generated first register mark cut 60 has been correctly executed in relation to the register marks 42 . If so, no correction or change is made by the first registration mark cutting device 54. If no, correction signals are supplied to a first registration mark cutting position correction device 92 via a fifth signal line 91.
  • the first registration mark cutting position correction device 92 is advantageously part of the first control arrangement 86 and ensures a correspondingly corrected activation of the first registration mark cutting device 54.
  • a properly executed registration mark cut 60, 63 is shown.
  • the register mark cut 60, 63 is carried out exactly in relation to the associated register mark 42. In particular, it is not offset in the direction of transport 29 or counter to the direction of transport 29 with respect to the respective registration mark 42 .
  • Faulty registration mark cuts 60, 63 are in 4 , 5 shown. They are offset in or against the transport direction 29, as shown by the register marks 42, which are cut in an offset manner.
  • the control of the second registration mark cutting device 56 is analogous.
  • Corresponding second registration mark signals of the registration marks 42 detected by the second registration mark detection sensors 49 on the second web section 40 are supplied to a second electronic information processing device 94 via sixth signal lines 93 .
  • the second information processing device 94 is in signal connection with a second control arrangement 96 via a seventh signal line 95 .
  • the second control arrangement 96 receives corresponding signals from the second information processing device 94 .
  • the second control arrangement 96 in turn has a signal connection via an eighth signal line 97 to a second drive motor 98 of the second registration mark cutting device 56 for the corresponding rotary drive of the second registration mark cutting roller pair 57 .
  • the second drive motor 98 thus receives corresponding cutting signals from the second control arrangement 96 for cutting the second web section 40 into the second sheets of corrugated cardboard 80. This cutting process is triggered by the detected registration marks 42.
  • the second registration mark cut detection device 70 thereby detects the respective second registration mark cut 63 generated.
  • the second registration mark cut position evaluation device 100 evaluates whether the generated second registration mark section 63 has been correctly executed in relation to the registration marks 42 . If so, no correction or change is made by the second registration mark cutting device 56. If no, correction signals are fed to a second registration mark cutting position correction device 102 via a tenth signal line 101.
  • the second registration mark cutting position correction device 102 is advantageously part of the second control arrangement 96 and ensures a correspondingly corrected activation of the second registration mark cutting device 56.
  • Erroneous registration mark cuts 60, 63 are in 4 , 5 shown. They are offset in or against the direction of transport 29 .
  • the registration mark cutting position correction is explained again in more detail using the first registration mark cutting device 54 .
  • the correction takes place analogously by means of the second registration mark cutting device 56 .
  • a first step 103 the first conveyed corrugated cardboard sheets 75 are recorded by means of the first registration mark cut detection cameras 69. Adjacent corrugated sheets 75 are conveniently spaced from each other.
  • a second step 104 the images recorded by the first registration mark intersection detection cameras 69 are transmitted to the first registration mark intersection position evaluation device 90 via the fourth signal lines 89 .
  • the cutting edges 106, 107 produced by the first registration mark cutting device 54 are detected in an image processing unit of the registration mark cutting position evaluation device 90 on adjacent first sheets of corrugated cardboard 75.
  • the cutting edges 106, 107 are adjacent and parallel to each other.
  • step 108 the associated register mark 42 for the register mark section 60 is detected in the first register mark section position evaluation device 90 .
  • Step 108 can occur before or after step 105.
  • the distance between the cutting edges 106, 107 and the associated register mark 42 in the transport direction 29 or counter to it is determined in the first registration mark cut position evaluation device 90.
  • a distance measuring unit of the registration mark cut position evaluation device 90 is used for this purpose.
  • next step 110 corresponding distance signals are transmitted to the first control arrangement 86 via the fifth signal line 91 .
  • the next step 111 there is a comparison of the distance between the cutting edges 106, 107 and the associated register mark 42 with a tolerable register mark offset from order data.
  • the first control arrangement has a corresponding distance comparison unit.
  • a registration mark intersection position correction is calculated in the first control arrangement 86, if required.
  • a corresponding calculation unit is available for this.
  • the first registration mark cut position correction device 92 is used, if necessary, to correct or shift the first registration mark cut 60 by changing the control of the first registration mark cutting device 54.
  • the correction of the second registration mark cutting device 56 is carried out analogously.
  • the specified signal connections or signal lines can be wireless or wired.
  • Figures 6 to 8 show alternative versions of usable registration marks 42.
  • this registration mark 42 is formed by exactly one bar running perpendicularly to the transport direction 29 .
  • each registration mark 42 is formed by two bars which run parallel to one another. They are arranged at a distance from one another in the transport direction 29 and run perpendicularly to the adjacent longitudinal edge.

Description

Die Erfindung betrifft eine Wellpappe-Anlage zum Herstellen von Wellpappe-Bögen. Ferner richtet sich die Erfindung auf ein Verfahren zum Herstellen von Wellpappe-Bögen.The invention relates to a corrugated board plant for producing sheets of corrugated board. Furthermore, the invention is directed to a method for producing sheets of corrugated cardboard.

Wellpappe-Anlagen sind aus dem Stand der Technik allgemein bekannt.Corrugated cardboard systems are generally known from the prior art.

Eine aus der gattungsbildenden US 2015/0053349 A1 bekannte Wellpappe-Anlage hat eine Wellpappe-Herstellvorrichtung mit einer CCD-Kamera zum Detektieren von Pressmarken auf einer einseitig kaschierten Wellpappe-Bahn und einer Bild-Bearbeitungseinheit, die einen Abstand zwischen benachbarten Pressmarken detektiert. Eine Querschneidevorrichtung umfasst eine CCD-Kamera, um Pressmarken auf einer beidseitig kaschierten Wellpappe-Bahn zu detektieren, und eine Bild-Bearbeitungseinheit, die imstande ist, eine Position der Pressmarken zu berechnen. Die Querschneidevorrichtung weist außerdem eine Steuereinheit auf, die aktiviert wird, wenn bezüglich einer Schneidposition beziehungsweise Riffelungsspitzenposition der beidseitig kaschierten Wellpappe-Bahn eine der Pressmarken eine Abweichung hat. Falls eine Abweichung einer Schneidposition und einer Riffelungsspitze erkannt wird, ändert die Steuereinheit die Betätigung der Schneidelemente.One of the generic US 2015/0053349 A1 known corrugated board plant has a corrugated board manufacturing device with a CCD camera for detecting press marks on a web of corrugated board laminated on one side and an image processing unit that detects a distance between adjacent press marks. A cross-cutting device comprises a CCD camera to detect press marks on a corrugated board web laminated on both sides, and an image processing unit capable of calculating a position of the press marks. The cross-cutting device also has a control unit that is activated when one of the press marks deviates from a cutting position or corrugation tip position of the web of corrugated board laminated on both sides. If a deviation of a cutting position and a corrugation tip is detected, the control unit changes the actuation of the cutting elements.

Aus der US 2005/0209075 A1 ist eine Anlage zur Herstellung von Wellpappe-Karton-Zuschnitten bekannt. Die Anlage umfasst eine Rotations-Schneidvorrichtung mit paarweise angeordneten Messerwalzen oder einer Messerwalze und einer Gegenwalze. Marken kooperieren mit einem Sensor- und Steuersystem, um ein Druckbild und/oder Markierungen auf einer Außenseite nach Falt- und Schneidvorgängen auszurichten. Dafür sind Sensoren vorhanden, die die Schneidvorrichtung steuern. Detektierte Stellen der Marken werden von dem Steuersystem mit optimalen Stellen verglichen. Sollte eine stromaufwärtige oder stromabwärtige Anordnung der Marken erkannt werden, so werden Schneidelemente entsprechend stromaufwärts oder stromabwärts verlagert.From the U.S. 2005/0209075 A1 a plant for the production of corrugated cardboard blanks is known. The system includes a rotary cutting device with knife rollers arranged in pairs or a knife roller and a counter roller. Brands cooperate with a sensor and control system to align a printed image and/or markings on an outside after folding and cutting operations. There are sensors that control the cutting device. Detected locations of the marks are compared to optimal locations by the control system. Should an upstream or downstream arrangement of the markers be recognized, cutting elements are displaced upstream or downstream accordingly.

Die US 3,058,869 offenbart eine Wellpappe-Anlage, bei der eine Schneidposition nach Enden von jedem Druckbild ausgerichtet wird. Auf eine Außenbahn werden Marken aufgebracht, um die Schneidposition anzugeben. Die Marken werden erfasst und es wird sichergestellt, dass die Schneidpositionen zwischen Druckbilder fallen. Dafür ist die Fördergeschwindigkeit der Wellpappe-Bahn entsprechend veränderbar.The U.S. 3,058,869 discloses a corrugator in which a cutting position is aligned with ends of each printed image. Marks are placed on an outer sheet to indicate the cutting position. The marks are detected and it is ensured that the cutting positions fall between print images. The conveying speed of the web of corrugated board can be changed accordingly for this purpose.

Bei der JP 2002-273800 A werden mittels einer Rotations-Querschneidevorrichtung Wellpappe-Bögen erzeugt. Ein führendes Ende eines Wellpappe-Bogens wird mittels einer Kamera erfasst. Eine positionsbezogene Beziehung zwischen einer aufgedruckten Marke und einem Breiten-Schneidrand wird erhalten.In the JP 2002-273800 A corrugated cardboard sheets are produced by means of a rotary cross-cutting device. A leading end of a sheet of corrugated board is captured by a camera. A positional relationship between a printed mark and a width margin is obtained.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Wellpappe-Anlage zu schaffen. Insbesondere soll die Wellpappe-Anlage im Stande sein, äußerst genau einzelne Wellpappe-Bögen aus einer, insbesondere endlosen, Wellpappe-Bahn zu erzeugen. Ein entsprechendes Verfahren soll außerdem geliefert werden.The invention is based on the object of creating an improved corrugated board plant. In particular, the corrugated board system should be able to produce individual sheets of corrugated board with extreme precision from a web of corrugated board, in particular an endless web. A corresponding procedure is also to be provided.

Diese Aufgabe wird erfindungsgemäß durch die in den unabhängigen Ansprüchen 1 und 11 angegebenen Merkmale gelöst. Die mindestens eine detektierte Passmarke löst die Passmarken-Schneidvorrichtung aus. Der Kern der Erfindung liegt darin, dass eine automatische bzw. selbständige Positionskorrektur des mindestens einen Passmarken-Schnitts mittels der Passmarken-Schnitt-Positionskorrektureinrichtung, sofern erforderlich, erfolgt, was äußerst wirtschaftlich ist. Insbesondere erfolgt die Positionskorrektur bei laufender Wellpappe-Anlage. Im Betrieb von Wellpappe-Anlagen des Stands der Technik ist es immer wieder zu einem Versatz des mindestens einen Passmarken-Schnitts in der bzw. gegen die Transportrichtung der Wellpappe-Bahn bzw. Wellpappe-Bögen gekommen, was erfindungsgemäß vermieden wird.According to the invention, this object is achieved by the features specified in independent claims 1 and 11 . The at least one detected registration mark triggers the registration mark cutting device. The essence of the invention lies in the fact that an automatic or independent position correction of the at least one registration mark section is carried out by means of the registration mark section position correction device, if necessary, which is extremely economical. In particular, the position is corrected while the corrugated board system is running. In the operation of corrugated cardboard systems of the prior art, the at least one registration mark cut has repeatedly been offset in or against the transport direction of the web of corrugated cardboard or sheets of corrugated cardboard, which is avoided according to the invention.

Es ist von Vorteil, wenn die Passmarken-Schneidvorrichtung die Positionskorrektur des mindestens einen Passmarken-Schnitts in der bzw. gegen die Transportrichtung der Wellpappe-Bahn bzw. der Wellpappe-Bögen unmittelbar bzw. sofort entsprechend umsetzt, so dass die nachfolgenden Passmarken-Schnitte bzw. Wellpappe-Bögen exakt einer Soll-Vorgabe entsprechen. Die erzeugten Wellpappe-Bögen haben in Transportrichtung eine Länge, die exakt der Soll-Vorgabe entspricht. Die Passmarken-Schneidvorrichtung ist vorzugsweise losgelöst von einer festen Haulänge betätigbar.It is advantageous if the registration mark cutting device directly or immediately implements the position correction of the at least one registration mark cut in or against the transport direction of the web of corrugated board or corrugated board sheets, so that the subsequent registration mark cuts or Corrugated cardboard sheets correspond exactly to a target specification. The corrugated cardboard sheets produced have a length in the transport direction that corresponds exactly to the target specification. The registration mark cutting device can preferably be actuated independently of a fixed cutting length.

Die mindestens eine Passmarke ist günstigerweise randseitig in Bezug auf die Wellpappe-Bahn angeordnet. Es ist von Vorteil, wenn die mindestens eine Passmarke auf die Wellpappe-Bahn aufgedruckt ist. Sie ist beispielsweise durch mindestens einen Balken oder eine Fliege gebildet. Alternativ ist die mindestens eine Passmarke beispielsweise durch mindestens einen Schlitz, eine RFID-Komponente oder dergleichen gebildet. Günstigerweise ist eine Vielzahl von Passmarken vorhanden, die in Transportrichtung der Wellpappe-Bahn bzw. Wellpappe-Bögen beabstandet zueinander angeordnet sind.The at least one registration mark is advantageously arranged at the edge in relation to the web of corrugated cardboard. It is advantageous if the at least one registration mark is printed on the web of corrugated cardboard. It is formed, for example, by at least one bar or a bow tie. Alternatively, the at least one registration mark is formed, for example, by at least one slot, an RFID component or the like. Conveniently, a variety of registration marks is available in the direction of transport Corrugated web or corrugated sheets are spaced from each other.

Die Passmarken-Detektionsvorrichtung arbeitet günstigerweise berührungslos. Sie ist vorzugsweise eine optische Passmarken-Detektionsvorrichtung.The registration mark detection device advantageously works without contact. It is preferably an optical registration mark detection device.

Es ist von Vorteil, wenn die Passmarken-Schneidvorrichtung als Querschneidvorrichtung ausgeführt ist. Es ist zweckmäßig, wenn diese mindestens eine drehantreibbare Walze mit mindestens einem radial verlaufenden Messer aufweist.It is advantageous if the registration mark cutting device is designed as a cross cutting device. It is expedient if this has at least one rotationally drivable roller with at least one radially running blade.

Vorzugsweise ist die Steuerungsanordnung eine elektrische bzw. elektronische Steuerungsanordnung. Die Signalverbindungen sind beispielsweise drahtlos oder drahtgebunden ausgeführt. Sie bestehen vorzugsweise mindestens zeitweise. Über die Signalverbindungen sind günstigerweise Signale übertragbar. Die Steuerungsanordnung steht mit der Passmarken-Schneidvorrichtung und/oder mit der Passmarken-Detektionsvorrichtung in direkter oder indirekter Signalverbindung.The control arrangement is preferably an electrical or electronic control arrangement. The signal connections are, for example, wireless or wired. They preferably exist at least temporarily. Signals can advantageously be transmitted via the signal connections. The control arrangement has a direct or indirect signal connection to the registration mark cutting device and/or to the registration mark detection device.

Es ist von Vorteil, wenn die Passmarken-Schnitt-Positionskorrektureinrichtungen Bestandteil der Steuerungsanordnung ist. Alternativ ist diese beispielsweise Bestandteil der Passmarken-Schneidvorrichtung.It is advantageous if the register mark cut position correction device is part of the control arrangement. Alternatively, this is part of the registration mark cutting device, for example.

Die Passmarken-Schneidvorrichtung umfasst günstigerweise mindestens zwei Passmarken-Schneideinrichtungen zum Schneiden von Teilbahnen der Wellpappe-Bahn. Es ist von Vorteil, wenn die Passmarken-Detektionsvorrichtung mindestens zwei Passmarken-Detektionseinrichtungen zum Detektieren mindestens einer Passmarke auf Teilbahnen der Wellpappe-Bahn hat.The registration mark cutting device advantageously comprises at least two registration mark cutting devices for cutting partial webs of the web of corrugated board. It is advantageous if the registration mark detection device has at least two registration mark detection devices Detecting at least one registration mark on partial webs of the web of corrugated board.

Die Wellpappe-Bahn-Produktionsanordnung ist bevorzugt im Stande, mehrlagige, insbesondere dreilagige, fünflagige oder siebenlagige, Wellpappe-Bahnen zu erzeugen. Sie umfasst dafür günstigerweise mindestens eine Vorrichtung zur Herstellung einer einseitig kaschierten Wellpappe-Bahn. Die Wellpappe-Bahn weist vorzugsweise mindestens eine glatte Deckbahn, eine glatte Kaschierbahn und eine zwischen diesen angeordnete Wellbahn auf.The web of corrugated board production arrangement is preferably capable of producing multi-ply, in particular three-ply, five-ply or seven-ply, webs of corrugated board. For this purpose, it favorably comprises at least one device for producing a web of corrugated cardboard laminated on one side. The web of corrugated board preferably has at least one smooth cover web, one smooth liner web and one corrugated web arranged between them.

Günstigerweise ist die Passmarken-Schnitt-Erfassungsanordnung als optische Passmarken-Schnitt-Erfassungsanordnung ausgeführt. Vorzugsweise ist jeder Passmarken-Schneideinrichtung der Passmarken-Schneidvorrichtung mindestens eine Passmarken-Schnitt-Erfassungseinrichtung der Passmarken-Schnitt-Erfassungsanordnung zum Erfassen des mindestens einen Passmarken-Schnitts in der jeweiligen Wellpappe-Bahn nachgeordnet.The register mark cut detection arrangement is advantageously designed as an optical register mark cut detection arrangement. Each registration mark cutting device of the registration mark cutting device is preferably followed by at least one registration mark cut detection device of the registration mark cut detection arrangement for detecting the at least one registration mark cut in the respective web of corrugated board.

Die Passmarken-Schnitt-Positionsauswerteeinrichtung ist günstigerweise Bestandteil der Steuerungsanordnung. Sie ist vorzugsweise elektrischer bzw. elektronischer Art.The register mark cut position evaluation device is advantageously part of the control arrangement. It is preferably of an electrical or electronic nature.

Die hier verwendeten Ausdrücke "vorgeordnet", "nachgeordnet", "stromaufwärts", "stromabwärts" oder dergleichen sind insbesondere auf eine Transportrichtung der Wellpappe-Bahn bzw. der Wellpappe-Bögen bezogen.The expressions "upstream", "downstream", "upstream", "downstream" or the like used here relate in particular to a transport direction of the web of corrugated board or the sheets of corrugated board.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous refinements of the invention are specified in the dependent claims.

Gemäß dem Unteranspruch 2 ist die Passmarken-Schnitt-Erfassungsanordnung als Kameraanordnung ausgeführt. Andere Ausbildungen sind alternativ möglich.According to dependent claim 2, the registration mark cut detection arrangement is designed as a camera arrangement. Other designs are alternatively possible.

Die der Wellpappe-Bahn zugeordneten Passmarken-Schnitt-Erfassungseinrichtungen gemäß dem Unteranspruch 3 sind günstigerweise einander gegenüberliegend angeordnet. Die Wellpappe-Bahn ist vorzugsweise zwischen diesen hindurchgeführt.The register mark cut detection devices assigned to the web of corrugated board according to dependent claim 3 are advantageously arranged opposite one another. The web of corrugated board is preferably passed between them.

Die Bildverarbeitungseinheit gemäß dem Unteranspruch 5 nutzt günstigerweise ein entsprechendes Bildverarbeitungsprogramm. Vorzugsweise wird dort das aufgenommene Bild des mindestens einen Passmarken-Schnitts verarbeitet.The image processing unit according to dependent claim 5 advantageously uses a corresponding image processing program. The recorded image of the at least one register mark section is preferably processed there.

Die Passmarken-Schnitt-Positionskorrektureinrichtung steht gemäß dem Unteranspruch 7 mit der Passmarken-Schnitt-Positionsauswerteeinrichtung und der Passmarken-Schneidvorrichtung direkt oder indirekt in Signalverbindung.According to dependent claim 7, the register mark cut position correction device is directly or indirectly signal-connected to the register mark cut position evaluation device and the register mark cutting device.

Mit der Sollwert-Intervall-Vorgabeeinheit gemäß dem Unteranspruch 8 ist der Passmarken-Schnitt-Positionskorrektureinrichtung ein Sollwert bzw. eine Toleranz vorgebbar.With the setpoint interval specification unit according to dependent claim 8, a setpoint or a tolerance can be specified for the register mark intersection position correction device.

Nachfolgend wird unter Bezugnahme auf die beigefügte Zeichnung eine bevorzugte Ausführungsform der Erfindung beispielhaft beschrieben. Dabei zeigen:

Fig. 1
eine schematische Seitenansicht einer erfindungsgemäßen Wellpappe-Anlage,
Fig. 2
eine Seitenansicht der Passmarken-Detektionsvorrichtung und der Passmarken-Schneidvorrichtung der in Fig. 1 gezeigten Wellpappe-Anlage,
Fig. 3
eine Draufsicht auf eine Wellpappe-Bahn, die mittels eines Passmarken-Schnitts der Passmarken-Schneidvorrichtung gemäß Fig. 1 bzw. 2 ordnungsgemäß durchtrennt worden ist,
Fig. 4, 5
die in Fig. 3 gezeigte Wellpappe-Bahn, wobei die Passmarken-Schnitte fehlerhaft ausgeführt worden sind,
Fig. 6 - 8
alternative Ausführungen von Passmarken, und
Fig. 9
ein Blockdiagramm, das den Ablauf der Passmarken-Schnitt-Positionskorrektur der Wellpappe-Anlage gemäß Fig. 1 veranschaulicht.
A preferred embodiment of the invention is described below by way of example with reference to the accompanying drawings. show:
1
a schematic side view of a corrugator according to the invention,
2
a side view of the registration mark detection device and the registration mark cutting device of FIG 1 shown corrugated board plant,
3
12 is a plan view of a web of corrugated board made by means of a registration mark cut of the registration mark cutting device according to FIG 1 or 2 has been properly severed,
Figures 4, 5
in the 3 web of corrugated board shown, where the registration mark cuts have been made incorrectly,
Figures 6 - 8
alternative designs of registration marks, and
9
Fig. 12 is a block diagram showing the flow of registration mark cut position correction of the corrugator 1 illustrated.

Eine Wellpappe-Anlage, wie sie in Fig. 1 vereinfacht in ihrer Gesamtheit veranschaulicht ist, umfasst eine Wellpappe-Bahn-Produktionsanordnung 1 zur Herstellung einer endlosen Wellpappe-Bahn 2. Die Wellpappe-Bahn-Produktionsanordnung 1 weist eine Vorrichtung 3 zur Herstellung einer einseitig kaschierten Wellpappe-Bahn 4 auf.A corrugated board plant as in 1 is illustrated in a simplified manner in its entirety, comprises a web of corrugated board production arrangement 1 for producing an endless web of corrugated board 2 .

Von einer ersten Abrolleinrichtung 5 wird eine erste Materialbahn 6 der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappe-Bahn 4 zugeführt. Zwischen der ersten Abrolleinrichtung 5 und der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappe-Bahn 4 befindet sich eine Vorheizeinrichtung 18 zum Vorheizen der ersten Materialbahn 6.A first web of material 6 is fed from a first unwinding device 5 to the device 3 for producing the web of corrugated board 4 laminated on one side. A preheating device 18 for preheating the first web of material 6 is located between the first unwinding device 5 and the device 3 for producing the web of corrugated board 4 laminated on one side.

Die erste Materialbahn 6 wird in der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappe-Bahn 4 mit einer zweiten Materialbahn 7 zusammengeführt, die von einer zweiten Abrolleinrichtung 8 abgerollt wird.The first web of material 6 is brought together in the device 3 for producing the web of corrugated board 4 laminated on one side with a second web of material 7 which is unwound by a second unwinding device 8 .

Die Materialbahnen 6, 7 sind vorzugsweise endlos. Dafür haben die Abrolleinrichtungen 5, 8 günstigerweise entsprechende Spliceeinheiten (nicht dargestellt).The webs of material 6, 7 are preferably endless. For this purpose, the unwinding devices 5, 8 advantageously have corresponding splicing units (not shown).

Die zweite Materialbahn 7 wird in der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappe-Bahn 4 zur Erzeugung einer Wellung zwischen einer ersten und zweiten Riffelwalze 9, 10 hindurchgeführt, die benachbart zueinander angeordnet sind und beim Riffeln um ihre Achsen rotieren. Die zweite Materialbahn 7 liegt nach dieser Durchführung als Wellbahn 11 vor.In the device 3 for producing the single-faced web of corrugated cardboard 4, the second web of material 7 is guided through to produce a corrugation between a first and second corrugating roller 9, 10, which are arranged adjacent to one another and rotate about their axes during corrugation. After this passage, the second web of material 7 is in the form of a corrugated web 11 .

Anschließend werden Spitzen der Wellbahn 11 von einer Beleimungseinrichtung 12 beleimt, die Bestandteil der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappebahn 4 ist.Tips of the corrugated web 11 are then glued by a gluing device 12, which is part of the device 3 for producing the corrugated web 4 laminated on one side.

Die mit Leim versehene Wellbahn 11 und die erste Materialbahn 6 werden dann in der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappe-Bahn 4 in einem Spalt zwischen der ersten Riffelwalze 9, die oberhalb der zweiten Riffelwalze 10 angeordnet ist, und einer Anpresseinrichtung 13 unter Bildung der einseitig kaschierten Wellpappe-Bahn 4 zusammengedrückt und klebend miteinander verbunden.The corrugated web 11 provided with glue and the first material web 6 are then formed in the device 3 for producing the single-faced corrugated web 4 in a gap between the first corrugating roller 9, which is arranged above the second corrugating roller 10, and a pressing device 13 the single-faced web of corrugated board 4 is compressed and adhesively bonded to one another.

Aus der Vorrichtung 3 zur Herstellung der einseitig kaschierten Wellpappe-Bahn 4 wird dann die aus den Materialbahnen 6, 7 gebildete, einseitig kaschierte Wellpappe-Bahn 4 herausgeführt und um eine Umlenkwalze 14 zu einer Vorheizvorrichtung 15 der Wellpappe-Bahn-Produktionsanordnung 1 geführt.The one-side-laminated corrugated cardboard web 4 formed from the material webs 6, 7 is then fed out of the device 3 for producing the single-sided corrugated cardboard web 4 and guided around a deflection roller 14 to a preheating device 15 of the corrugated cardboard web production arrangement 1.

Die Wellpappe-Bahn-Produktionsanordnung 1 hat außerdem eine dritte Abrolleinrichtung 16 für eine dritte, vorzugsweise endlose, Materialbahn 17. Die dritte Materialbahn 17 bildet eine Kaschierbahn für die einseitig kaschierte Wellpappe-Bahn 4. Auch die dritte Materialbahn 17 wird der Vorheizvorrichtung 15 zugeführt.The corrugated cardboard web production arrangement 1 also has a third unwinding device 16 for a third, preferably endless, material web 17. The third material web 17 forms a laminating web for the corrugated cardboard web 4 laminated on one side. The third material web 17 is also fed to the preheating device 15.

Die Vorheizvorrichtung 15 weist zwei übereinander angeordnete beheizbare Heizwalzen 19, 20 auf. Die einseitig kaschierte Wellpappe-Bahn 4 und die dritte Materialbahn 17 laufen in der Vorheizvorrichtung 15 beabstandet übereinander und berühren bereichsweise außenseitig die jeweilige Heizwalze 19 bzw. 20.The preheating device 15 has two heatable heating rollers 19, 20 arranged one above the other. The web of corrugated board 4 laminated on one side and the third web of material 17 run at a distance one above the other in the preheating device 15 and touch the respective heating roller 19 or 20 in some areas on the outside.

Ferner umfasst die Wellpappe-Bahn-Produktionsanordnung 1 ein Leimwerk 21, das stromabwärts zu der Vorheizvorrichtung 15 angeordnet ist. Das Leimwerk 21 hat eine Beleimungswalze 22, die teilweise in ein Leimbad 23 eintaucht. Die einseitig kaschierte Wellpappe-Bahn 4 befindet sich mit ihrer Wellbahn 11 in Kontakt mit der Beleimungswalze 22, so dass Leim aus dem Leimbad 23 auf die Wellbahn 11, insbesondere auf deren Spitzen, übertragen wird.Furthermore, the corrugated board web production arrangement 1 comprises a gluing unit 21 which is arranged downstream of the preheating device 15 . The gluing unit 21 has a gluing roller 22 which is partially immersed in a glue bath 23 . The corrugated web 4 laminated on one side is located with its corrugated web 11 in contact with the gluing roller 22, so that glue is transferred from the glue bath 23 to the corrugated web 11, in particular to its tips.

Die Wellpappe-Bahn-Produktionsanordnung 1 weist außerdem eine Heiz-Andrück-Vorrichtung 24 auf, die stromabwärts zu dem Leimwerk 21 angeordnet ist. Die Heiz-Andrück-Vorrichtung 24 umfasst einen horizontalen, mit Heizelementen (nicht dargestellten) versehenen Tisch 25. Oberhalb des Tisches 25 hat die Heiz-Andrück-Vorrichtung 24 einen um Walzen 26 geführten, endlosen Andrückgurt 27. Zwischen dem Andrückgurt 27 und dem Tisch 25 ist ein Andrückspalt 28 ausgebildet, durch den die einseitig kaschierte Wellpappe-Bahn 4 und die dritte Materialbahn 17 transportiert und dort aneinander gedrückt werden. In der Heiz-Andrück-Vorrichtung 24 wird die endlose Wellpappe-Bahn 2 gebildet, die gemäß dieser bevorzugten Ausführungsform dreilagig ist und in einer Transportrichtung 29 kontinuierlich transportiert wird.The corrugated web production arrangement 1 also has a heating and pressing device 24 which is arranged downstream of the gluing unit 21 . The heating presser 24 comprises a horizontal table 25 provided with heating elements (not shown). Above the table 25, the heating presser 24 has an endless press belt 27 guided around rollers 26. Between the press belt 27 and the table 25, a pressure gap 28 is formed, through which the one-sidedly laminated web of corrugated board 4 and the third material web 17 are transported and pressed against one another there. In the heating and pressing device 24 the endless web of corrugated cardboard 2 is formed, which, according to this preferred embodiment, has three layers and is transported continuously in a transport direction 29 .

Stromabwärts zu der Heiz-Andrück-Vorrichtung 24 in Bezug auf die Transportrichtung 29 hat die Wellpappe-Anlage eine Kurz-Querschneidevorrichtung 30. Die Kurz-Querschneidevorrichtung 30 weist einen Messerzylinder 31 und einen unterhalb desselben angeordneten Gegenzylinder 32 auf. Der Messerzylinder 31 und der Gegenzylinder 32 sind drehbar gelagert, wobei deren Drehachsen parallel zueinander und senkrecht zu der Transportrichtung 29 der endlosen Wellpappe-Bahn 2 verlaufen.Downstream of the heating pressing device 24 with respect to the transport direction 29, the corrugator has a short cross-cutter 30. The short cross-cutter 30 has a knife cylinder 31 and an anvil cylinder 32 arranged below the same. The blade cylinder 31 and the counter-cylinder 32 are rotatably mounted, with their axes of rotation running parallel to one another and perpendicular to the transport direction 29 of the endless web of corrugated board 2 .

Der Messerzylinder 31 hat einen Zylindermantel, an dem ein Messer (nicht dargestellt) mit einer Schneidkante befestigt ist. Auch der Gegenzylinder 32 hat einen Zylindermantel, an dem ein Gegenmesser (nicht dargestellt) mit einer Schneidkante angebracht ist.The blade cylinder 31 has a cylinder jacket on which a blade (not shown) is attached with a cutting edge. The counter-cylinder 32 also has a cylinder jacket on which a counter-knife (not shown) with a cutting edge is attached.

Auf dem Zylindermantel des Gegenzylinders 32 ist ferner eine Reihe von Gegenkörperelementen (nicht dargestellt) angeordnet, die zwischen zwei auf dem Zylindermantel befestigten, radial vorstehenden Anschlägen (nicht dargestellt) verschiebbar sind.A series of counter-body elements (not shown) are also arranged on the cylinder jacket of the counter-cylinder 32 and can be displaced between two radially projecting stops (not shown) fastened on the cylinder jacket.

Die Kurz-Querschneidevorrichtung 30 ist imstande, einen Schnitt zu erzeugen, der sich über die volle Breite der endlosen Wellpappe-Bahn 2 erstreckt. Dazu werden der Messerzylinder 31 und der Gegenzylinder 32 derart in Rotation versetzt, dass sie bzw. deren Messer bei dem Schneidvorgang miteinander wechselwirken.The short cross cutter 30 is capable of making a cut that extends across the full width of the continuous web 2 of corrugated board. For this purpose, the blade cylinder 31 and the counter-cylinder 32 are rotated in such a way that they or their blades interact with one another during the cutting process.

Ferner ist die Kurz-Querschneidevorrichtung 30 imstande, einen Schnitt mit einer bestimmten Länge und mit einem bestimmten Abstand von einem Längsrand der endlosen Wellpappe-Bahn 2 zu erzeugen. Dazu werden die Gegenkörperelemente entsprechend gewählt bzw. verstellt. Für den Schneidvorgang werden der Messerzylinder 31 und der Gegenzylinder 32 derart in Rotation versetzt, dass das Messer des Messerzylinders 31 mit den Gegenkörperelementen wechselwirkt. Bezüglich des Detailaufbaus der Kurz-Querschneidevorrichtung 30 und deren Funktion wird auf die DE 10 2004 003 560 A1 verwiesen. Die Kurz-Querschneidevorrichtung 30 kann auch konstruktiv anders ausgebildet sein oder fehlen.Further, the short cross cutter 30 is capable of making a cut of a specified length and a specified distance from a longitudinal edge of the continuous web of corrugated fiberboard 2 . For this purpose, the counter-body elements are selected or adjusted accordingly. For the cutting process, the blade cylinder 31 and the counter-cylinder 32 are rotated in such a way that the blade of the blade cylinder 31 interacts with the counter-body elements. With regard to the detailed construction of the short cross-cutting device 30 and its function, reference is made to FIG DE 10 2004 003 560 A1 referred. The short transverse cutting device 30 can also have a different design or be absent.

Stromabwärts der Kurz-Querschneidevorrichtung 30 in Bezug auf die Transportrichtung 29 weist die Wellpappe-Anlage eine Längsschneide-/Rillvorrichtung 33 auf, die zwei hintereinander angeordnete Rillstationen 34 und zwei hintereinander angeordnete Längsschneidestationen 35 umfasst. Jede Rillstation 34 hat zwei paarweise übereinander angeordnete Rillwerkzeuge 36, zwischen welchen die endlose Wellpappe-Bahn 2 hindurchgeführt ist. Jede Längsschneidestation 35 weist ein drehantreibbares Messer 37 auf, das mit der endlosen Wellpappe-Bahn 2 zur Längsdurchtrennung derselben in Eingriff bringbar ist.Downstream of the short cross-cutting device 30 with respect to the transport direction 29, the corrugated board plant has a slitting/creating device 33, which comprises two creasing stations 34 arranged one behind the other and two longitudinal cutting stations 35 arranged one behind the other. Each creasing station 34 has two creasing tools 36 arranged one above the other in pairs, between which the endless web of corrugated board 2 is passed. Each slitting station 35 has a rotationally drivable knife 37 which can be brought into engagement with the endless web of corrugated cardboard 2 for severing the same longitudinally.

Stromabwärts zu der Längsschneide-/Rillvorrichtung 33 in Bezug auf die Transportrichtung 29 umfasst die Wellpappe-Anlage eine Weiche 38, in der ein endloser, längsgeschnittener, erster Bahnabschnitt 39 und ein endloser, längsgeschnittener, zweiter Bahnschnitt 40 der endlosen Wellpappe-Bahn 2 voneinander getrennt werden. Die Bahnabschnitte 39, 40 stammen aus der endlosen Wellpappe-Bahn 2 und bilden endlose Teilbahnen der endlosen Wellpappe-Bahn 2.Downstream of the slitting/creating device 33 in relation to the transport direction 29, the corrugated board plant comprises a diverter 38, in which an endless, longitudinally cut, first web section 39 and an endless, longitudinally cut, second web section 40 of the endless corrugated board web 2 are separated from one another become. The web sections 39, 40 come from the endless web of corrugated board 2 and form endless partial webs of the endless web of corrugated board 2.

Stromabwärts zu der Weiche 38 in Bezug auf die Transportrichtung 29 weist die Wellpappe-Anlage eine Passmarken-Detektionsvorrichtung 41 zum Detektieren von Passmarken 42 (Fig. 2 bis 5) auf der endlosen Wellpappe-Bahn 2 bzw. den Bahnabschnitten 39, 40 auf.Downstream of the diverter 38 with respect to the transport direction 29, the corrugated board system has a registration mark detection device 41 for detecting registration marks 42 ( Figures 2 to 5 ) on the endless web of corrugated cardboard 2 or the web sections 39, 40.

Wie Fig. 2 zeigt, in welcher die Passmarken-Detektionsvorrichtung 41 gemäß Fig. 1 im Detail veranschaulicht ist, hat die Passmarken-Detektionsvorrichtung 41 eine erste obere Passmarken-Detektionseinrichtung 43 und eine zweite untere Passmarken-Detektionseinrichtung 44. Die erste Passmarken-Detektionseinrichtung 43 ist dem ersten Bahnabschnitt 39 zum Detektieren von Passmarken 42 auf demselben zugeordnet, während die zweite Passmarken-Detektionseinrichtung 44 dem zweiten Bahnabschnitt 40 zum Detektieren von Passmarken 42 auf demselben zugeordnet ist.How 2 shows, in which the registration mark detection device 41 according to 1 is illustrated in detail, the registration mark detection device 41 has a first upper registration mark detection device 43 and a second lower registration mark detection device 44. The first registration mark detection device 43 is associated with the first track section 39 for detecting registration marks 42 on the same, while the second Registration mark detection device 44 is assigned to the second web section 40 for detecting registration marks 42 on the same.

Die erste Passmarken-Detektionseinrichtung 43 hat zwei einander gegenüberliegende erste Passmarken-Detektionssensoren 45, die benachbart und stromaufwärts in Bezug auf die Transportrichtung 29 zu einem ersten Führungswalzenpaar 46 zum Führen des ersten Bahnabschnitts 39 angeordnet sind. Der erste Bahnabschnitt 39 ist zwischen den beiden ersten Passmarken-Detektionssensoren 45 hindurchgeführt. Die ersten Passmarken-Detektionssensoren 45 erfassen dabei die Oberseite 47 und Unterseite 48 des ersten Bahnabschnitts 39.The first registration mark detection device 43 has two opposing first registration mark detection sensors 45 which are arranged adjacent and upstream with respect to the transport direction 29 to a first pair of guide rollers 46 for guiding the first web section 39 . The first web section 39 is led through between the two first registration mark detection sensors 45 . The first registration mark detection sensors 45 detect the upper side 47 and lower side 48 of the first web section 39.

Die zweite Passmarken-Detektionseinrichtung 44 ist entsprechend der ersten Passmarken-Detektionseinrichtung 43 ausgebildet. Sie umfasst zwei zweite Passmarken-Detektionssensoren 49, die benachbart und stromaufwärts in Bezug auf die Transportrichtung 29 zu einem zweiten Führungswalzenpaar 50 zum Führen des zweiten Bahnabschnitts 40 angeordnet sind. Der zweite Bahnabschnitt 40 ist zwischen den beiden zweiten Passmarken-Detektionssensoren 49 hindurchgeführt. Die zweiten Passmarken-Detektionssensoren 49 erfassen die Oberseite 51 und Unterseite 52 des zweiten Bahnabschnittes 40.The second registration mark detection device 44 is designed in accordance with the first registration mark detection device 43 . It comprises two second registration mark detection sensors 49 which are arranged adjacent and upstream with respect to the transport direction 29 to a second pair of guide rollers 50 for guiding the second web section 40 . The second web section 40 is between the two second registration mark detection sensors 49 passed through. The second registration mark detection sensors 49 detect the upper side 51 and lower side 52 of the second web section 40.

Der Passmarken-Detektionsvorrichtung 41 ist in Bezug auf die Transportrichtung 29 eine Passmarken-Schneidvorrichtung 53 nachgeordnet, die in Fig. 1 wieder vereinfacht und in Fig. 2 im Detail dargestellt ist. Die Passmarken-Schneidvorrichtung 53 ist benachbart zu der Passmarken-Detektionsvorrichtung 41 angeordnet. Sie weist für den ersten Bahnabschnitt 39 eine erste Passmarken-Schneideinrichtung 54 mit einem ersten Passmarken-Schneid-Walzenpaar 55 und für den zweiten Bahnabschnitt 40 eine zweite Passmarken-Schneideinrichtung 56 mit einem zweiten Passmarken-Schneid-Walzenpaar 57 auf.A registration mark cutting device 53 is arranged downstream of the registration mark detection device 41 with respect to the transport direction 29 1 again simplified and in 2 is shown in detail. The registration mark cutting device 53 is arranged adjacent to the registration mark detection device 41 . It has a first registration mark cutting device 54 with a first registration mark cutting roller pair 55 for the first web section 39 and a second registration mark cutting device 56 with a second registration mark cutting roller pair 57 for the second web section 40 .

Jede erste Walze 58 des ersten Passmarken-Schneid-Walzenpaares 55 trägt einen sich radial nach außen erstreckenden und senkrecht zu der Transportrichtung 29 verlaufenden ersten Messerbalken 59. Die ersten Messerbalken 59 wirken zur Querdurchtrennung des ersten Bahnabschnitts 39 unter Erzeugung eines ersten Passmarken-Schnitts 60 (Fig. 3 bis 5) zusammen.Each first roller 58 of the first registration mark cutting roller pair 55 carries a first cutter bar 59 which extends radially outwards and runs perpendicularly to the transport direction 29. The first cutter bars 59 act to cut through the first web section 39 transversely, producing a first registration mark cut 60 ( Figures 3 to 5 ) together.

Jede zweite Walze 61 des zweiten Passmarken-Schneid-Walzenpaares 57 trägt einen sich radial nach außen erstreckenden und senkrecht zu der Transportrichtung 29 verlaufenden zweiten Messerbalken 62. Die zweiten Messerbalken 62 wirken zur Querdurchtrennung des zweiten Bahnabschnitts 40 unter Bildung eines zweiten Passmarken-Schnitts 63 zusammen.Each second roller 61 of the second register mark cutting roller pair 57 carries a second cutter bar 62 which extends radially outwards and runs perpendicularly to the transport direction 29. The second cutter bars 62 work together to transversely cut through the second web section 40, forming a second register mark cut 63 .

Jedes Passmarken-Schneid-Walzenpaar 55, 57 ist durch einen Motor drehantreibbar. Insbesondere sind durch die Motoren die Walzen 58, 61 des jeweiligen Passmarken-Schneid-Walzenpaares 55 bzw. 57 um deren Mittelachse drehantreibbar.Each registration mark cutting roller pair 55, 57 can be driven in rotation by a motor. In particular, the motors rotate the rollers 58, 61 of the respective registration mark cutting roller pair 55 or 57 can be driven in rotation about their central axis.

Stromaufwärts in Bezug auf die Transportrichtung 29 sind zu der ersten Passmarken-Schneideinrichtung 54 zwei erste Einführungs-Walzenpaare 64 zum exakten Einführen des ersten Bahnabschnitts 39 in die erste Passmarken-Schneideinrichtung 54 angeordnet. Der erste Bahnabschnitt 39 ist durch die ersten Einführungs-Walzenpaare 64 hindurchgeführt.Upstream in relation to the transport direction 29 to the first registration mark cutting device 54 are two first introduction roller pairs 64 for the exact introduction of the first web section 39 into the first registration mark cutting device 54 . The first web section 39 is passed through the first infeed roller pairs 64 .

Stromaufwärts in Bezug auf die Transportrichtung 29 sind zu der zweiten Passmarken-Schneideinrichtung 56 zwei zweite Einführungs-Walzenpaare 65 zum exakten Einführen des zweiten Bahnabschnitts 40 in die zweite Passmarken-Schneideinrichtung 56 angeordnet. Der zweite Bahnabschnitt 40 ist durch die zweiten Einführungs-Walzenpaare 65 hindurchgeführt.Two second pairs of introductory rollers 65 for the exact introduction of the second web section 40 into the second register mark cutting device 56 are arranged upstream in relation to the transport direction 29 to the second register mark cutting device 56 . The second web section 40 is passed through the second infeed roller pairs 65 .

Zwei erste Ausführungs-Walzenpaare 66 sind in Bezug auf die Transportrichtung 29 stromabwärts zu der ersten Passmarken-Schneideinrichtung 54 angeordnet und dienen zum exakten Ausführen des ersten Bahnabschnitts 39. Der erste Bahnabschnitt 39 ist durch die ersten Ausführungs-Walzenpaare 66 hindurchgeführt.Two first pairs of delivery rollers 66 are arranged downstream of the first registration mark cutting device 54 with respect to the transport direction 29 and are used for the exact delivery of the first web section 39. The first web section 39 is guided through the first pairs of delivery rollers 66.

Zwei zweite Ausführungs-Walzenpaare 67 sind in Bezug auf die Transportvorrichtung 29 stromabwärts zu der zweiten Passmarken-Schneideinrichtung 56 angeordnet und dienen zum exakten Ausführen des zweiten Bahnabschnitts 40. Der zweite Bahnabschnitt 39 ist durch die zweiten Ausführungs-Walzenpaare 67 hindurchgeführt.Two second pairs of outfeed rollers 67 are arranged downstream of the second registration mark cutter 56 with respect to the transport device 29 and serve to precisely feed out the second web section 40. The second web section 39 is guided through the second pairs of outfeed rollers 67.

Zwischen den ersten Ausführungs-Walzenpaaren 66 ist eine erste Passmarken-Schnitt-Erfassungseinrichtung 68 zum Erfassen des ersten Passmarken-Schnitts 60 in dem ersten Bahnschnitt 39 angeordnet. Die erste Passmarken-Schnitt-Erfassungseinrichtung 68 ist durch zwei einander gegenüberliegende, erste Passmarken-Schnitt-Erfassungskameras 69 gebildet, zwischen welchen der erste Bahnabschnitt 39 in der Transportrichtung 29 hindurchgeführt ist. Die ersten Passmarken-Schnitt-Erfassungskameras 69 erfassen sowohl die Oberseite 47 als auch die Unterseite 48 des ersten Bahnabschnitts 39.Between the first delivery roller pairs 66 is a first registration mark cut detector 68 for detecting the first registration mark cut 60 arranged in the first web section 39. The first registration mark cut detection device 68 is formed by two opposing first registration mark cut detection cameras 69 between which the first web section 39 is passed in the transport direction 29 . The first registration mark cut detection cameras 69 capture both the upper side 47 and the lower side 48 of the first web section 39.

Zwischen den zweiten Ausführungswalzen-Paaren 67 ist eine zweite Passmarken-Schnitt-Erfassungseinrichtung 70 zum Erfassen des zweiten Passmarken-Schnitts 63 in dem zweiten Bahnabschnitt 40 angeordnet. Die zweite Passmarken-Schnitt-Erfassungseinrichtung 70 ist durch zwei einander gegenüberliegende, zweite Passmarken-Schnitt-Erfassungskameras 71 gebildet, zwischen welchen der zweite Bahnabschnitt 40 in der Transportrichtung 29 hindurchgeführt ist. Die zweiten Passmarken-Schnitt-Erfassungskameras 71 erfassen die Oberseite 51 und Unterseite 52 des zweiten Bahnabschnitts 40.A second registration mark cut detection device 70 for detecting the second registration mark cut 63 in the second web section 40 is arranged between the second pairs of delivery rollers 67 . The second register mark cut detection device 70 is formed by two opposing, second register mark cut detection cameras 71 between which the second web section 40 is passed in the transport direction 29 . The second registration mark cut detection cameras 71 capture the top side 51 and bottom side 52 of the second web section 40.

Die Passmarken-Schnitt-Erfassungseinrichtungen 68, 70 bilden eine Passmarken-Schnitt-Erfassungsanordnung.The registration mark cut detection devices 68, 70 form a registration mark cut detection arrangement.

Die Passmarken-Schneideinrichtungen 54, 56, die Passmarken-Schnitt-Erfassungseinrichtungen 68, 70, die Einführungs-Walzenpaare 64, 65 und die Ausführungs-Walzenpaare 66, 67 sind günstigerweise an einem gemeinsamen Maschinengestell angeordnet.The registration mark cutters 54, 56, the registration mark cut detectors 68, 70, the infeed roller pairs 64, 65 and the outfeed roller pairs 66, 67 are conveniently arranged on a common machine frame.

Der Passmarken-Schneidvorrichtung 53 ist eine Förderbandanordnung 72 nachgeordnet. Die Förderbandanordnung 72 hat ein erstes Förderband 73, das um drehantreibbare erste Walzen 74 geführt ist. Das erste Förderband 73 dient zur Förderung erster Wellpappe-Bögen 75, die mittels der ersten Passmarken-Schneideinrichtung 54 aus dem ersten Bahnabschnitt 39 erzeugt worden sind. Auf dem ersten Förderband 73 werden die ersten Wellpappe-Bögen 75 geschuppt zu einer ersten Ablage 76 gefördert, wo diese zu einem ersten Stapel 77 gestapelt werden.A conveyor belt arrangement 72 is arranged downstream of the registration mark cutting device 53 . The conveyor belt arrangement 72 has a first conveyor belt 73 which is guided around first rollers 74 which can be driven in rotation. The first conveyor belt 73 serves to convey first sheets of corrugated board 75 which have been produced from the first web section 39 by means of the first registration mark cutting device 54 . On the first conveyor belt 73, the first sheets of corrugated cardboard 75 are conveyed in a shingled manner to a first tray 76, where they are stacked to form a first stack 77.

Die Förderbandanordnung 72 umfasst ein zweites Förderband 78, das um drehantreibbare zweite Walzen 79 geführt ist. Das zweite Förderband 78 dient zur Förderung zweiter Wellpappe-Bögen 80, die mittels der zweiten Passmarken-Schneideinrichtung 56 aus dem zweiten Bahnabschnitt 40 erzeugt worden sind. Die zweiten Wellpappe-Bögen 80 werden geschuppt auf dem zweiten Förderband 78 zu einer zweiten Ablage 81 gefördert, wo diese zu einem zweiten Stapel 82 gestapelt werden.The conveyor belt arrangement 72 comprises a second conveyor belt 78 which is guided around second rollers 79 which can be driven in rotation. The second conveyor belt 78 serves to convey second sheets of corrugated board 80 which have been produced from the second web section 40 by means of the second registration mark cutting device 56 . The second sheets of corrugated board 80 are conveyed shingled on the second conveyor belt 78 to a second tray 81 where they are stacked to form a second stack 82 .

Nachfolgend wird die Ansteuerung der Passmarken-Schneidvorrichtung 53 näher erläutert. Die Bahnabschnitte 39, 40 werden jeweils in der Transportrichtung 29 transportiert. Dabei passieren sie die erste Passmarken-Detektionseinrichtung 43 bzw. die zweite Passmarken-Detektionseinrichtung 44.The control of the registration mark cutting device 53 is explained in more detail below. The web sections 39, 40 are each transported in the transport direction 29. In doing so, they pass the first registration mark detection device 43 or the second registration mark detection device 44.

Korrespondierende erste Passmarken-Signale der von den ersten Passmarken-Detektionssensoren 45 erfassten Passmarken 42 auf dem ersten Bahnabschnitt 39 werden über erste Signalleitungen 83 einer ersten elektronischen Informations-Verarbeitungseinrichtung 84 zugeführt.Corresponding first registration mark signals of the registration marks 42 detected by the first registration mark detection sensors 45 on the first web section 39 are supplied to a first electronic information processing device 84 via first signal lines 83 .

Die erste Informations-Verarbeitungseinrichtung 84 steht über eine zweite Signalleitung 85 mit einer ersten Steuerungsanordnung 86 in Signalverbindung. Die erste Steuerungsanordnung 86 empfängt von der ersten Informations-Verarbeitungseinrichtung 84 entsprechende Signale.The first information processing device 84 has a signal connection to a first control arrangement 86 via a second signal line 85 . The first control arrangement 86 receives corresponding signals from the first information processing device 84 .

Die erste Steuerungsanordnung 86 steht wiederum über eine dritte Signalleitung 87 mit einem ersten Antriebsmotor 88 der ersten Passmarken-Schneideinrichtung 54 zum entsprechenden Drehantrieb des ersten Passmarken-Schneid-Walzenpaares 55 in Signalverbindung. Der erste Antriebsmotor 88 empfängt so entsprechende Schnittsignale von der ersten Steuerungsanordnung 86 zum Schneiden des ersten Bahnabschnitts 39 zu den ersten Wellpappe-Bögen 75. Ausgelöst wird dieser Schneidvorgang durch die detektierten Passmarken 42.The first control arrangement 86 in turn has a signal connection via a third signal line 87 to a first drive motor 88 of the first registration mark cutting device 54 for the corresponding rotary drive of the first registration mark cutting roller pair 55 . The first drive motor 88 thus receives corresponding cutting signals from the first control arrangement 86 for cutting the first web section 39 to form the first corrugated cardboard sheets 75. This cutting process is triggered by the detected registration marks 42.

Die erste Passmarken-Schnitt-Erfassungseinrichtung 68 erfasst dabei den jeweiligen erzeugten ersten Passmarken-Schnitt 60. Entsprechende Passmarken-Schnitt-Positionssignale werden über vierte Signalleitungen 89 einer ersten Passmarken-Schnitt-Positionsauswerteeinrichtung 90 zugeführt. Die erste Passmarken-Schnitt-Positionsauswerteeinrichtung 90 wertet aus, ob der erzeugte erste Passmarken-Schnitt 60 ordnungsgemäß in Bezug auf die Passmarken 42 ausgeführt worden ist. Falls ja, erfolgt keine Korrektur bzw. Änderung der ersten Passmarken-Schneideinrichtung 54. Falls nein, werden über eine fünfte Signalleitung 91 Korrektursignale einer ersten Passmarken-Schnitt-Positionskorrektureinrichtung 92 zugeführt. Die erste Passmarken-Schnitt-Positionskorrektureinrichtung 92 ist günstigerweise Bestandteil der ersten Steuerungsanordnung 86 und sorgt für eine entsprechende korrigierte Ansteuerung der ersten Passmarken-Schneideinrichtung 54.The first register mark cut detection device 68 detects the respective first register mark cut 60 that is generated. The first register mark cut position evaluation device 90 evaluates whether the generated first register mark cut 60 has been correctly executed in relation to the register marks 42 . If so, no correction or change is made by the first registration mark cutting device 54. If no, correction signals are supplied to a first registration mark cutting position correction device 92 via a fifth signal line 91. The first registration mark cutting position correction device 92 is advantageously part of the first control arrangement 86 and ensures a correspondingly corrected activation of the first registration mark cutting device 54.

In Fig. 3 ist ein ordnungsgemäß ausgeführter Passmarken-Schnitt 60, 63 gezeigt. Der Passmarken-Schnitt 60, 63 ist exakt in Bezug auf die zugehörige Passmarke 42 ausgeführt. Er ist insbesondere unversetzt in der Transportrichtung 29 bzw. entgegen der Transportrichtung 29 in Bezug auf die jeweilige Passmarke 42 ausgeführt. Fehlerhafte Passmarken-Schnitte 60, 63 sind in Fig. 4, 5 dargestellt. Sie sind in bzw. gegen der Transportrichtung 29 versetzt, wie die versetzt durchtrennten Passmarken 42 zeigen.In 3 a properly executed registration mark cut 60, 63 is shown. The register mark cut 60, 63 is carried out exactly in relation to the associated register mark 42. In particular, it is not offset in the direction of transport 29 or counter to the direction of transport 29 with respect to the respective registration mark 42 . Faulty registration mark cuts 60, 63 are in 4 , 5 shown. They are offset in or against the transport direction 29, as shown by the register marks 42, which are cut in an offset manner.

Die Ansteuerung der zweiten Passmarken-Schneideinrichtung 56 erfolgt analog. Korrespondierende zweite Passmarken-Signale der von den zweiten Passmarken-Detektionssensoren 49 erfassten Passmarken 42 auf dem zweiten Bahnabschnitt 40 werden über sechste Signalleitungen 93 einer zweiten elektronischen Informations-Verarbeitungseinrichtung 94 zugeführt.The control of the second registration mark cutting device 56 is analogous. Corresponding second registration mark signals of the registration marks 42 detected by the second registration mark detection sensors 49 on the second web section 40 are supplied to a second electronic information processing device 94 via sixth signal lines 93 .

Die zweite Informations-Verarbeitungseinrichtung 94 steht über eine siebte Signalleitung 95 mit einer zweiten Steuerungsanordnung 96 in Signalverbindung. Die zweite Steuerungsanordnung 96 empfängt von der zweiten Informations-Verarbeitungseinrichtung 94 entsprechende Signale.The second information processing device 94 is in signal connection with a second control arrangement 96 via a seventh signal line 95 . The second control arrangement 96 receives corresponding signals from the second information processing device 94 .

Die zweite Steuerungsanordnung 96 steht wiederum über eine achte Signalleitung 97 mit einem zweiten Antriebsmotor 98 der zweiten Passmarken-Schneideinrichtung 56 zum entsprechenden Drehantrieb des zweiten Passmarken-Schneid-Walzenpaares 57 in Signalverbindung. Der zweite Antriebsmotor 98 empfängt so entsprechende Schnittsignale von der zweiten Steuerungsanordnung 96 zum Schneiden des zweiten Bahnabschnitts 40 zu den zweiten Wellpappe-Bögen 80. Ausgelöst wird dieser Schneidvorgang durch die detektierten Passmarken 42.The second control arrangement 96 in turn has a signal connection via an eighth signal line 97 to a second drive motor 98 of the second registration mark cutting device 56 for the corresponding rotary drive of the second registration mark cutting roller pair 57 . The second drive motor 98 thus receives corresponding cutting signals from the second control arrangement 96 for cutting the second web section 40 into the second sheets of corrugated cardboard 80. This cutting process is triggered by the detected registration marks 42.

Die zweite Passmarken-Schnitt-Erfassungseinrichtung 70 erfasst dabei den jeweiligen erzeugten zweiten Passmarken-Schnitt 63. Entsprechende Passmarken-Schnitt-Positionssignale werden über neunte Signalleitungen 99 einer zweiten Passmarken-Schnitt-Positionsauswerteeinrichtung 100 zugeführt. Die zweite Passmarken-Schnitt-Positionsauswerteeinrichtung 100 wertet aus, ob der erzeugte zweite Passmarken-Schnitt 63 ordnungsgemäß in Bezug auf die Passmarken 42 ausgeführt worden ist. Falls ja, erfolgt keine Korrektur bzw. Änderung der zweiten Passmarken-Schneideinrichtung 56. Falls nein, werden über eine zehnte Signalleitung 101 Korrektursignale einer zweiten Passmarken-Schnitt-Positionskorrektureinrichtung 102 zugeführt. Die zweite Passmarken-Schnitt-Positionskorrektureinrichtung 102 ist günstigerweise Bestandteil der zweiten Steuerungsanordnung 96 und sorgt für eine entsprechende korrigierte Ansteuerung der zweiten Passmarken-Schneideinrichtung 56.The second registration mark cut detection device 70 thereby detects the respective second registration mark cut 63 generated. The second registration mark cut position evaluation device 100 evaluates whether the generated second registration mark section 63 has been correctly executed in relation to the registration marks 42 . If so, no correction or change is made by the second registration mark cutting device 56. If no, correction signals are fed to a second registration mark cutting position correction device 102 via a tenth signal line 101. The second registration mark cutting position correction device 102 is advantageously part of the second control arrangement 96 and ensures a correspondingly corrected activation of the second registration mark cutting device 56.

Fehlerhafte Passmarken-Schnitte 60, 63 sind in Fig. 4, 5 dargestellt. Sie sind in bzw. gegen der Transportrichtung 29 versetzt.Erroneous registration mark cuts 60, 63 are in 4 , 5 shown. They are offset in or against the direction of transport 29 .

Nachfolgend wird unter Bezugnahme auf Fig. 9 die Passmarken-Schnitt-Positionskorrektur anhand der ersten Passmarken-Schneideinrichtung 54 nochmals detaillierter erläutert. Die Korrektur erfolgt mittels der zweiten Passmarken-Schneideinrichtung 56 analog.Below, with reference to 9 the registration mark cutting position correction is explained again in more detail using the first registration mark cutting device 54 . The correction takes place analogously by means of the second registration mark cutting device 56 .

In einem ersten Schritt 103 werden mittels der ersten Passmarken-Schnitt-Erfassungskameras 69 die ersten geförderten Wellpappe-Bögen 75 aufgenommen. Benachbarte Wellpappe-Bögen 75 sind günstigerweise beabstandet zueinander angeordnet.In a first step 103, the first conveyed corrugated cardboard sheets 75 are recorded by means of the first registration mark cut detection cameras 69. Adjacent corrugated sheets 75 are conveniently spaced from each other.

In einem zweiten Schritt 104 werden die von den ersten Passmarken-Schnitt-Erfassungskameras 69 aufgenommenen Bilder über die vierten Signalleitungen 89 an die erste Passmarken-Schnitt-Positionsauswerteeinrichtung 90 übermittelt.In a second step 104 the images recorded by the first registration mark intersection detection cameras 69 are transmitted to the first registration mark intersection position evaluation device 90 via the fourth signal lines 89 .

Hier werden in einer Bildverarbeitungseinheit der Passmarken-Schnitt-Positionsauswerteeinrichtung 90 als dritter Schritt 105 die durch die erste Passmarken-Schneideinrichtung 54 erzeugten Schneidkanten 106, 107 an benachbart angeordneten ersten Wellpappe-Bögen 75 detektiert. Die Schneidkanten 106, 107 verlaufen benachbart und parallel zueinander.As a third step 105, the cutting edges 106, 107 produced by the first registration mark cutting device 54 are detected in an image processing unit of the registration mark cutting position evaluation device 90 on adjacent first sheets of corrugated cardboard 75. The cutting edges 106, 107 are adjacent and parallel to each other.

Als Schritt 108 wird in der ersten Passmarken-Schnitt-Positionsauswerteeinrichtung 90 die zugehörige Passmarke 42 zu dem Passmarken-Schnitt 60 detektiert. Schritt 108 kann vor oder nach Schritt 105 erfolgen.As step 108 , the associated register mark 42 for the register mark section 60 is detected in the first register mark section position evaluation device 90 . Step 108 can occur before or after step 105.

Als nächster Schritt 109 wird in der ersten Passmarken-Schnitt-Positionsauswerteeinrichtung 90 der Abstand der Schneidkanten 106, 107 zu der zugehörigen Passmarke 42 in Transportrichtung 29 bzw. entgegen derselben ermittelt. Dazu wird eine Abstandsmesseinheit der Passmarken-Schnitt-Positionsauswerteeinrichtung 90 herangezogen.As the next step 109, the distance between the cutting edges 106, 107 and the associated register mark 42 in the transport direction 29 or counter to it is determined in the first registration mark cut position evaluation device 90. A distance measuring unit of the registration mark cut position evaluation device 90 is used for this purpose.

Entsprechende Abstandssignale werden als nächster Schritt 110 über die fünfte Signalleitung 91 der ersten Steuerungsanordnung 86 übermittelt.In the next step 110 , corresponding distance signals are transmitted to the first control arrangement 86 via the fifth signal line 91 .

Dort erfolgt als nächster Schritt 111 ein Vergleich des Abstands zwischen der Schneidkanten 106, 107 zu der zugehörigen Passmarke 42 mit einem tolerierbaren Passmarkenversatz aus Auftragsdaten. Dazu hat die erste Steuerungsanordnung eine entsprechende Abstandvergleichseinheit.The next step 111 there is a comparison of the distance between the cutting edges 106, 107 and the associated register mark 42 with a tolerable register mark offset from order data. For this purpose, the first control arrangement has a corresponding distance comparison unit.

Als nächster Schritt 112 wird, falls erforderlich, in der ersten Steuerungsanordnung 86 eine Passmarken-Schnitt-Positionskorrektur berechnet. Eine entsprechende Berechnungseinheit ist dazu vorhanden.As a next step 112, a registration mark intersection position correction is calculated in the first control arrangement 86, if required. A corresponding calculation unit is available for this.

Als nächster Schritt 113 erfolgt mittels der ersten Passmarken-Schnitt-Positionskorrektureinrichtung 92, sofern erforderlich, eine Korrektur bzw. Verlagerung des ersten Passmarken-Schnitts 60 durch geänderte Ansteuerung der ersten Passmarken-Schneideinrichtung 54.In the next step 113, the first registration mark cut position correction device 92 is used, if necessary, to correct or shift the first registration mark cut 60 by changing the control of the first registration mark cutting device 54.

Die Korrektur der zweiten Passmarken-Schneideinrichtung 56 erfolgt analog.The correction of the second registration mark cutting device 56 is carried out analogously.

Die angegebenen Signalverbindungen bzw. Signalleitungen können drahtlos oder drahtgebunden ausgeführt sein.The specified signal connections or signal lines can be wireless or wired.

Fig. 6 bis 8 zeigen alternative Ausführungen einsetzbarer Passmarken 42. Gemäß Fig. 6 ist diese Passmarke 42 durch genau einen senkrecht zu der Transportrichtung 29 verlaufenden Balken gebildet. Figures 6 to 8 show alternative versions of usable registration marks 42. According to 6 this registration mark 42 is formed by exactly one bar running perpendicularly to the transport direction 29 .

Gemäß Fig. 7 ist jede Passmarke 42 durch zwei Balken gebildet, die parallel zueinander verlaufen. Sie sind in der Transportrichtung 29 beabstandet zueinander angeordnet und verlaufen senkrecht zu der benachbarten Längskante.According to 7 each registration mark 42 is formed by two bars which run parallel to one another. They are arranged at a distance from one another in the transport direction 29 and run perpendicularly to the adjacent longitudinal edge.

Gemäß Fig. 8 sind drei Balken vorhanden, die parallel zueinander verlaufen und in der Transportrichtung 29 äquidistant zueinander angeordnet sind.According to 8 there are three bars which run parallel to one another and are arranged equidistantly from one another in the transport direction 29 .

Claims (11)

  1. Corrugated cardboard plant, comprising
    a) a corrugated cardboard web production assembly (1) for producing a corrugated cardboard web (2, 39, 40),
    b) a register mark cutting device (53), disposed downstream of the corrugated cardboard web production assembly (1), for cutting the corrugated cardboard web (2, 39, 40) into corrugated cardboard sheets (75, 80),
    c) a register mark detection device (41), disposed upstream of the register mark cutting device (53), for detecting at least one register mark (42) on the corrugated cardboard web (2, 39, 40),
    d) a control assembly (86, 96) which
    i. is in signal connection with the register mark cutting device (53),
    ii. is in signal connection with the register mark detection device (41), and
    iii. depending on the at least one detected register mark (42), actuates the register mark cutting device (53) for cutting the corrugated cardboard web (2, 39, 40) into the corrugated cardboard sheets (75, 80), while generating at least one register mark cut (60, 63), and
    e) a register mark cut position correction installation (92, 102) for automatic correction of a position of the at least one register mark cut (60, 63) in relation to the at least one register mark (42) in the case of an undesirable deviation of a position of the at least one register mark cut (60, 63),
    characterized by
    f) a register mark cut detection assembly (68, 70), disposed downstream of the register mark cutting device (53), for detecting the at least one register mark cut (60, 63), and
    g) a register mark cut position evaluation installation (90, 100) for evaluating a position of the at least one register mark cut (60, 63) in relation to the at least one associated register mark (42).
  2. Corrugated cardboard plant according to claim 1, characterized in that the register mark cut detection assembly (68, 70) is configured as a camera assembly.
  3. Corrugated cardboard plant according to claim 1 or 2, characterized in that the register mark cut detection assembly (68, 70) comprises a register mark cut detection installation (68, 70), facing an upper side (47, 51) of the corrugated cardboard sheets (75, 80), for detecting the upper side (47, 51) of the corrugated cardboard sheets (75, 80), and a further register mark cut detection installation (68, 70), facing a lower side (48, 52) of the corrugated cardboard sheets (75, 80), and a further register mark cut detection installation (68, 70), facing a lower side (48, 52) of the corrugated cardboard sheets (75, 80), for detecting the lower side (48, 52) of the corrugated cardboard sheets (75, 80).
  4. Corrugated cardboard plant according to one of the preceding claims, characterized in that the register mark cut detection assembly (68, 70) is disposed upstream of a depository (76, 81) for depositing the corrugated cardboard sheets (75, 80) in stacks (77, 82).
  5. Corrugated cardboard plant according to one of the preceding claims, characterized in that the register mark cut position evaluation installation (90, 100) comprises an image processing unit.
  6. Corrugated cardboard plant according to one of the preceding claims, characterized in that the register mark cut position evaluation installation (90, 100) comprises a spacing measuring unit for measuring at least one spacing between at least one register mark cutting edge (96, 97) on the at least one corrugated cardboard sheet (75, 80) generated, and the at least one associated register mark (42).
  7. Corrugated cardboard plant according to one of the preceding claims, characterized in that the register mark cut position correction installation (92, 102) is in signal connection with the register mark cut position evaluation installation (90, 100) and the register mark cutting device (53).
  8. Corrugated cardboard plant according to one of the preceding claims, characterized by a nominal interval parameter unit for correcting a position of the at least one register mark cut (60, 63) in the case of deviation from a nominal interval.
  9. Corrugated cardboard plant according to one of the preceding claims, characterized in that the register mark cutting device (53) converts the position correction of the at least one register mark cut (60, 63) in or against a transport direction (29) of the corrugated cardboard web (2, 39, 40) or the corrugated cardboard sheets (75, 80) in such a manner that the subsequent register mark cuts (60, 63) correspond to a desired specification.
  10. Corrugated cardboard plant according to one of the preceding claims, characterized in that the register mark cut position evaluation installation (90) comprises a spacing measuring unit for determining a spacing of the at least one register mark cut (60, 63) to the associated register mark (42) in the transport direction (29) or against the latter.
  11. Method for the production of corrugated cardboard sheets (75, 80), comprising
    - producing a corrugated cardboard web (2, 39, 40) by means of a corrugated cardboard web production assembly (1),
    - cutting the corrugated cardboard web (2, 39, 40) into corrugated cardboard sheets (75, 80) by a register mark cutting device (53) that is disposed downstream of the corrugated cardboard web production assembly (1),
    - detecting at least one register mark (42) on the corrugated cardboard web (2, 39, 40) by means of a register mark detection device (41) which is disposed upstream of the register mark cutting device (53),
    - actuating the register mark cutting device (53) for cutting the corrugated cardboard web (2, 39, 40) into the corrugated cardboard sheets (75, 80) by means of a control assembly (86, 96) depending on the at least one detected register mark (42) by generating at least one register mark cut (60, 63), wherein the control assembly (86, 96) is in signal connection with the register mark cutting device (53) and the register mark detection device (41),
    - automatically correcting a position of the at least one register mark cut (60, 63) in relation to the at least one register mark (42) in the case of an undesirable deviation of a position of the at least one register mark cut (60, 63) by means of a register mark cut position correction installation (92, 102),
    - detecting the at least one register mark cut (60, 63) by means of a register mark cut detection assembly (68, 70) that is disposed downstream of the registration mark cutting device (53), and
    - evaluating a position of the at least one register mark cut (60, 63) in relation to the at least one associated register mark (42) by means of a register mark cut position evaluation installation (90, 100).
EP18152293.9A 2017-01-27 2018-01-18 Position correction for registration marks when cutting corrugated cardboard Active EP3354426B1 (en)

Applications Claiming Priority (1)

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DE102017201371.0A DE102017201371A1 (en) 2017-01-27 2017-01-27 Corrugating machine

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EP3354426B1 true EP3354426B1 (en) 2023-03-22

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EP (1) EP3354426B1 (en)
CN (1) CN108357153B (en)
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ES (1) ES2947035T3 (en)

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EP3354426A1 (en) 2018-08-01
CN108357153B (en) 2021-06-04
ES2947035T3 (en) 2023-07-31
US20180215061A1 (en) 2018-08-02
US10576650B2 (en) 2020-03-03
CN108357153A (en) 2018-08-03
DE102017201371A1 (en) 2018-08-02

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