EP2422972A1 - Swivelling inspection device - Google Patents
Swivelling inspection device Download PDFInfo
- Publication number
- EP2422972A1 EP2422972A1 EP11173908A EP11173908A EP2422972A1 EP 2422972 A1 EP2422972 A1 EP 2422972A1 EP 11173908 A EP11173908 A EP 11173908A EP 11173908 A EP11173908 A EP 11173908A EP 2422972 A1 EP2422972 A1 EP 2422972A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inspection device
- housing
- light source
- control system
- camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000123 paper Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000005286 illumination Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 206010039737 Scratch Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
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- 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/006—Controlling; Regulating; Measuring; Improving safety
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
- B65H2301/542—Quality control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/25—Driving or guiding arrangements
- B65H2404/254—Arrangement for varying the guiding or transport length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/26—Particular arrangement of belt, or belts
- B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
- B65H2404/2613—Means for changing the transport path, e.g. deforming, lengthening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
- B65H2553/42—Cameras
Definitions
- the invention relates to an inspection device for flat, sheet-like material made of paper, cardboard or the like according to the preamble of claim 1.
- control systems comprising at least one line scan camera and a corresponding lighting device.
- the control device is arranged above and / or below the sheet transport plane.
- Different systems are known for transporting the sheets past the control system.
- transport systems which have two or more conveying means for transporting the sheets.
- transport systems are known which have at least one upper conveyor belt and at least one lower conveyor belt, between which the sheets are transported trapped.
- systems are known in which the sheets are transported by means of conveyor belts, which act together with a suction roll.
- Other transport systems which can not be enumerated here in detail, are known and can be combined in an appropriate arrangement with control systems to control the lower and / or upper side of a sheet.
- the sheets are first printed wide web in a printing press. On the sheets, several benefits of the cartons to be produced are printed in each case, which are then punched out in a punch. The punched-out folding box blanks are then fed to a folding box gluing machine and processed here into folding boxes.
- the individual processing stations have conveying means driven for transporting the folding box blanks. These consist, for example, each one arranged on the side of the machine upper and lower conveyor belt, the lower conveyor belt is guided in a roller cheek and the upper conveyor belt in a roller rail.
- the conveyor belts are arranged transversely adjustable and can thus be adjusted to the respective folding carton blank format.
- the blanks are transported printed side down between the top and bottom conveyor belts. From the DE 10 2004 022 344 A1 Such a folding box gluing machine is known.
- the line scan camera Since the blanks are transported in the Faltschachtelklebemaschine with the printed side down from the transport device through the individual processing stations, the line scan camera must be located below the blank transport plane. Since the camera is to take a picture of the entire printed cut width, interfere with the lower continuous conveyor elements. From the DE 10 2005 050 040 A1 a device is known in which an inspection of a resting on a conveyor belt sheet on the back is possible. The camera is mounted in a gap of the conveyor belt below the sheet transport plane. For this purpose, the conveyor belt is placed over pulleys in a loop.
- the problem with controlling the sheets is the recognition of different errors. For example, color smudges are easier to see when the light source is oriented perpendicular to the object to be inspected instead of obliquely. If the light source illuminates the object vertically, the contrast increases and color smear can be better detected. On the other hand, for example, scratches on the sheets can be better recognized if the light source is arranged at an angle to the object to be inspected is because the scratches due to other reflective properties of the surface can be better recognized by the oblique illumination. The angle of the camera to the object as well as the angle between the camera and the light source influence the control possibilities of the errors to be examined.
- a digital scanning device for decoding a digitally coded symbol comprising a light source having a plurality of individually controllable light elements for generating dark field illumination and additionally a bright field light source for providing bright field illumination.
- the control of the light sources via a controller depending on the decoding quality of the symbol.
- the solution shown is complex and not suitable for the processing of sheets with high transport speed.
- the inspection device comprises a control system, which consists of a camera, a light source and a housing.
- Arc-shaped material is passed by means of a transport device to the control system.
- the control system is arranged above and / or below the transport device.
- the camera angle with respect to the surface of the sheet material to be controlled and / or the angle of incidence of the rays of the light source on the sheet material via an adjustment of the camera and / or the light source and / or the transport device is changeable.
- the inspection device can be adapted in a simple manner to different inspection requirements, so that errors of different types are easier to detect.
- the light source is arranged either part of the housing and / or inside or outside the housing.
- the housing can be pivoted via a pivoting device. This allows a particularly simple adjustment of the camera angle and the illumination angle.
- the light source can be pivoted relative to the camera.
- the bulge angle can be adjusted relative to the camera.
- control system is mounted adjustably transversely to the sheet or box transport direction.
- the camera is mounted with housing, for example, on two round guides and can be adjusted in a known manner by means of a spindle transverse to the transport direction of the sheet or cartons.
- a control at any point across the product transport, even off-center, easily adjustable can be arranged side by side and / or one behind the other in this way easily, whereby the inspection device can be adapted to different working widths and controls in a simple and cost-effective manner.
- the housing of the camera is connected to a blown air connection, via which an air flow is conducted into the housing, which exits at the upper gap of the housing, which is slit-shaped.
- the upper gap is formed either by the housing itself or from the combination of housing and light source.
- the inspection device has a transport device which has at least one upper and one lower conveying device with contacting conveying means.
- the lower conveyor is designed split and consists of at least two conveyors with a gap between these conveyors.
- the control system is placed in the gap between these lower conveyors.
- the upper conveyor can be carried out divided.
- the gap between the two lower conveyors is variable in their distance. This can be achieved for example via telescopic lower belt conveyors. Thus, the gap can be adapted to different camera or housing dimensions or angular positions.
- the inspection device is integrated into an already existing processing module.
- the print image control system can also be integrated into a separate inspection module, which is then installed between two existing processing modules within the machine group of Faltschachtelklebemaschine. This increases the flexibility with respect to the place of use.
- the inspection device can also be used as an offline device, and thus combined in an advantageous manner with the necessary for the specific application further modules such as feeder, discharge device and boom become.
- a sorting device is useful for the discharge device when it comes to the sorting of various products.
- FIG. 1 shows by way of example individual processing stations a Faltschachtelklebemaschine.
- the folder gluer starts in FIG. 1 bottom right with an insert 1, which pulls off the blanks to be processed at high speed from a stack one after the other and feeds them individually to the subsequent processing station.
- an alignment station 4 in which the blanks are individually aligned against a lateral stop.
- the alignment station is used to guide transversely positionable machine components in the form of two belt pairs, which serve as conveyor elements and can be transversely positioned via actuators.
- transversely positionable machine components in the form of belt pairs guide the conveyor elements, which are positioned transversely with an actuator depending on the type of blank.
- the folding module 7 is followed by a turning station 9.
- the turning station 9 contains for rotating the blanks about a vertical axis by 90 ° two parallel juxtaposed Conveyor lines whose speed is separately adjustable.
- the blanks are on both conveyor lines, so that they are rotated at different speeds of the two conveyor lines.
- the two conveyor lines contain driven rollers as conveying elements.
- a further alignment station 10 which corresponds in its construction of the alignment station behind the insert 1. It thus again contains transversely positionable machine components in the form of pairs of conveyor belts as conveying elements.
- the next processing station 13 serves to perform box-type dependent processing operations; For example, further score lines are pre-broken or special folds are performed. Also through the processing station 13 lead belt pairs as conveying elements that can be positioned transversely with actuators.
- a folding station 14 in which the blank parts previously provided with an adhesive seam are folded over by 180 °.
- the folding station 14 includes pairs of belts as conveying elements and an adhesive applicator, which can be moved by means of actuators in their dependent of the cutting type transverse position.
- a transfer station 15 from which the folded blanks, provided with not yet set adhesive seams, are exactly aligned in all parts with the subsequent collecting and pressing device 16.
- a shingled stream of folded blanks is first formed, which is subsequently held under pressure for some time between conveying press belts, so that the adhesive seams set.
- the transfer station also contains pairs of belts, which can be transversely adjusted by means of actuators.
- FIG. 2 shows by way of example a transport device 8, each with a left and right upper conveyor 3, 3 'and in each case a left and right lower conveyor 2.2', which in the present example as a belt conveyor with corresponding conveyor belts as conveying means 5, 5 ', 12, 12' is trained.
- the Conveyors 3, 3 ', 2, 2' are mounted on round trusses 11, so that they can be adjusted to the respective box cutting width.
- FIG. 3 shows an inspection device according to the invention.
- the sheet-like material 24 to be checked such as folding box blanks, is transported by the conveying module 30 in the conveying direction 25 by means of a transport device 20.
- the transport device 20 has an upper conveyor 21 with an endless conveyor 23, which is guided around deflection rollers, not shown.
- two lower conveyors 22, 22 ' which form a gap with the distance width b to each other.
- Both lower conveyors 22, 22 ' also have conveying means 23, which are guided around deflection rollers 26.
- the roller 27 is connected to a drive, not shown, and thus serves as a drive roller 27 for the conveyor 23 of the lower conveyor.
- the conveying means 23 in the present embodiment are designed as endless conveyor belts.
- the upper conveyor is mounted in a known manner in a roller rail 29 and the lower conveyor in non-illustrated roller cheeks.
- a control system 40 is mounted within the gap between the lower conveyors 22, 22 'such that the sheets transported across the gap can be tested from below by means of the control system 40.
- the control system 40 comprises a camera 41, a light source 42 and a housing 43, wherein the light source 42 may be disposed either inside or outside of the housing 43, or as may be part of the housing 43 in the present example.
- the housing 43 is provided with a blown air connection 44, via the blown air 45, which is guided, for example via a blower not shown in detail or even a side channel or roller compressor in the housing 43.
- the blown air flows around the camera and possibly the light source and exits from a gap 46 at the upper end of the housing 43, which is preferably slit-shaped, from, strikes the sheet-like material and presses this against the upper conveyor 23. This has a positive effect on the smoothness of the sheet material in the control system.
- the gap between the conveying devices 22, 2 'points in the FIG. 3 the distance b on.
- the lower conveyor devices are designed telescopically in a known manner, which is indicated by the arrows 31, 32.
- the gap between the two lower conveying devices 22, 22 'is thus variable via the telescopic conveying devices, which results in FIG. 4 also by the changed distance width b 'is shown.
- FIG. 3 is further shown that the housing 43 is connected via a flange 49 with a frame-fixed pivot bracket 50.
- the pivot bracket 50 has a circular segment-shaped slot 51.
- the pivot bracket 50 is pivotally connected, for example via a screw 48 to the lower part of the flange 49.
- the upper part of the flange 49 is connected via a fastening element 47 with the pivot bracket 50.
- the slot 51 allows the pivoting of the housing 43 by a pivot angle ⁇ .
- the light source 42 is mounted outside of the housing 43 and forms part of the housing 43.
- the two conveying devices 22, 22 ' have moved further apart via the telescopic devices (not shown) and form a gap with the distance b'.
- This lighting is particularly suitable for the inspection of Folding cartons with Braille in the area to be tested. Due to the vertical lighting a shadow is avoided at the Braille points.
- the angle between the light source and the camera in a manner not shown can also be adjusted against each other, especially if the light source 42 is mounted only on or in the housing 43 and is not part of the housing 43.
- control system 40 can also be formed with other transport devices 20 to form an inspection module, as already explained above.
- control system can of course also be used in other sheet-processing machines, such as in printing presses, folding machines or other finishing machines. It is also possible to use the control system as an inspection system in a separate offline facility for error control.
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Making Paper Articles (AREA)
Abstract
Description
Die Erfindung betrifft eine Inspektionsvorrichtung für flaches, bogenförmiges Material aus Papier, Pappe oder dergleichen gemäß dem Oberbegriff von Anspruch 1.The invention relates to an inspection device for flat, sheet-like material made of paper, cardboard or the like according to the preamble of claim 1.
Bei der Produktion von hochwertigen Druckprodukten beispielsweise Faltschachteln für die Pharma- und Kosmetikindustrie werden hohe Anforderungen an die Qualität sowohl der bedruckten Bogen, als auch der ausgestanzten Faltschachtelzuschnitte bis hin zu den fertig gefalzten und geklebten Faltschachteln, und zusätzlich von der Pharmaindustrie hohe Anforderungen an die Exaktheit der Aufdrucke der hergestellten Faltschachteln gestellt. Dies macht bereits bei der Herstellung während des gesamten Produktionsworkflows eine Fehlerkontrolle auf beispielsweise:
- Papierfehler wie z.B. Kartoneinschlüsse
- Fremde Partikel, z.B. Staub, unerwünschte Folienreste, Stanzabfälle, Aufkleber und Leimreste
- Farbabweichungen oder Lackfehler (fehlender Lack, Lack auf unerwünschten Flächen, Lackspritzer), unscharfe Konturen
- Registerversatz
- Textfehler
- Fehler in der Heißfolienprägung (Löcher in der Fläche, ausgefranste Kanten, fehlende Flächen)
- Kratzer und mechanische Fehler in der Bogenoberfläche (im unbedruckten Karton, im Druckbild, im Lack oder in der Folie)
- Matrixcodes
- Fehlende Fenster oder andere Applikationen aus vorgelagerten Produktionsschritten
- Sortenreinheit der Nutzen
- Übereinstimmung von Strichcodes und/oder Brailleprägungen mit der lesbaren Inhaltsangabe
- Paper defects such as cardboard inclusions
- Foreign particles, eg dust, unwanted film residues, punching waste, stickers and glue residues
- Color deviations or paint defects (missing paint, paint on unwanted surfaces, paint splashes), blurred contours
- register offset
- text error
- Errors in hot foil stamping (holes in the surface, frayed edges, missing surfaces)
- Scratches and mechanical defects in the sheet surface (in unprinted cardboard, in the printed image, in the paint or in the film)
- matrix codes
- Missing windows or other applications from upstream production steps
- Varietal purity the benefits
- Correspondence of barcodes and / or Braille embossings with the readable table of contents
Diese Kontrollen werden in der Regel mit Kontrollsystemen durchgeführt, die zumindest eine Zeilenkamera und eine entsprechende Beleuchtungsvorrichtung umfassen. Je nachdem, welche Fläche des Bogens kontrolliert werden soll, ist die Kontrollvorrichtung oberhalb und / oder unterhalb der Bogentransportebene angeordnet. Für den Transport der Bögen vorbei am Kontrollsystem sind unterschiedliche Systeme bekannt. Es gibt Transportsysteme, die nur ein Fördermittel, bspw. ein Saugband, zum Transport der Bögen aufweist. Weiterhin gibt es Transportsysteme, die zwei oder mehr Fördermittel zum Transport der Bögen aufweisen. Hier sind beispielsweise Transportsysteme bekannt, die mindestens einen oberen Förderriemen und mindestens einen unteren Förderriemen auf weisen, zwischen denen die Bögen eingeklemmt transportiert werden. Weiterhin sind auch Systeme bekannt, bei denen die Bögen mittels Förderriemen transportiert werden, die mit einer Saugwalze zusammen wirken. Auch weitere Transportsysteme, die hier nicht abschließend aufgezählt werden können, sind bekannt und können in entsprechender Anordnung mit Kontrollsystemen kombiniert werden, um die untere und / oder obere Seite eines Bogens zu kontrollieren.These checks are usually carried out with control systems comprising at least one line scan camera and a corresponding lighting device. Depending on which surface of the sheet is to be controlled, the control device is arranged above and / or below the sheet transport plane. Different systems are known for transporting the sheets past the control system. There are transport systems which have only one conveying means, for example a suction belt, for transporting the sheets. Furthermore, there are transport systems which have two or more conveying means for transporting the sheets. Here, for example, transport systems are known which have at least one upper conveyor belt and at least one lower conveyor belt, between which the sheets are transported trapped. Furthermore, systems are known in which the sheets are transported by means of conveyor belts, which act together with a suction roll. Other transport systems, which can not be enumerated here in detail, are known and can be combined in an appropriate arrangement with control systems to control the lower and / or upper side of a sheet.
Zur Herstellung von Faltschachteln werden die Bögen zunächst breitbahnig in einer Druckmaschine bedruckt. Auf den Bögen sind jeweils mehrere Nutzen der herzustellenden Faltschachteln aufgedruckt, die dann in einer Stanze ausgestanzt werden. Die ausgestanzten Faltschachtelzuschnitte werden anschließend einer Faltschachtelklebemaschine zugeführt und hier zu Faltschachteln verarbeitet.For the production of folding cartons, the sheets are first printed wide web in a printing press. On the sheets, several benefits of the cartons to be produced are printed in each case, which are then punched out in a punch. The punched-out folding box blanks are then fed to a folding box gluing machine and processed here into folding boxes.
Faltschachtelklebemaschinen zur Herstellung von Faltschachteln aus Faltschachtelzuschnitten weisen bekanntermaßen zumindest die folgenden Module als Bearbeitungsstationen auf:
- Einen Einleger, der die zu verarbeitenden Zuschnitte mit hoher Geschwindigkeit aus einem Stapel nacheinander abzieht und einzeln der nachfolgenden ersten Bearbeitungsstation zuführt,
- Ein Auftragwerk für Klebstoff, üblicherweise Leim, das auf die zu verklebenden Faltlappen einen Klebstoffstreifen aufträgt und
- Eine Faltstation, in der die mit einem Klebestreifen versehenen Zuschnittteile zur Herstellung einer Klebeverbindung um 180° umgelegt, also gefaltet werden.
- Im Anschluss an die Faltstation ist üblicherweise eine sogenannte Überleitstation angeordnet, in der die Schachteln gezählt, markiert und - falls schadhaft - ausgeschleust werden können.
- Danach folgt eine Pressstation, an deren Anfang ein Schuppenstrom aus gefalteten Zuschnitten gebildet wird, der in der Pressstation für einige Zeit unter Druck gehalten wird, damit die Klebenähte besser abbinden.
- A feeder, which pulls the blanks to be processed at high speed from a stack one after the other and feeds them individually to the subsequent first processing station,
- An applicator for glue, usually glue, which applies an adhesive strip to the folding flaps to be glued and
- A folding station in which the blank parts provided with an adhesive strip are folded by 180 °, ie folded, to produce an adhesive bond.
- Following the folding station usually a so-called transfer station is arranged, in which the boxes can be counted, marked and - if defective - can be discharged.
- This is followed by a pressing station, at the beginning of which a shingled stream of folded blanks is formed, which is held in the pressing station for some time under pressure, so that the adhesive seams set better.
Die einzelnen Bearbeitungsstationen weisen zum Transport der Faltschachtelzuschnitte angetriebene Fördermittel auf. Diese bestehen beispielsweise aus jeweils einem an der Seite der Maschine angeordneten oberen und unteren Förderriemen, wobei der untere Förderriemen in einer Rollenwange und der obere Förderriemen in einer Rollschiene geführt ist. Die Förderriemen sind querverstellbar angeordnet und können somit auf das jeweilige Faltschachtelzuschnittformat eingestellt werden. Die Zuschnitte werden mit der bedruckten Seite nach unten zwischen dem oberen und unteren Förderriemen transportiert. Aus der
Da die Zuschnitte in der Faltschachtelklebemaschine mit der bedruckten Seite nach unten von der Transportvorrichtung durch die einzelnen Bearbeitungsstationen transportiert werden, muss die Zeilenkamera unterhalb der Zuschnitttransportebene angeordnet sein. Da die Kamera ein Bild der gesamten bedruckten Zuschnittbreite aufnehmen soll, stören die unteren durchgehenden Förderelemente. Aus der
Problematisch bei der Kontrolle der Bögen ist die Erkennung unterschiedlicher Fehler. So sind beispielsweise Farbverschmierungen besser zu erkennen, wenn die Lichtquelle senkrecht statt schräg auf das zu kontrollierende Objekt ausgerichtet ist. Beleuchtet die Lichtquelle das Objekt senkrecht, so verstärkt sich der Kontrast und Farbverschmierungen können besser erkannt werden. Dahingegen sind beispielsweise Kratzer auf den Bögen besser zu erkennen, wenn die Lichtquelle schräg zum kontrollierenden Objekt angeordnet ist, weil die Kratzer aufgrund anderer Reflexionseigenschaften der Oberfläche durch die schräge Beleuchtung besser erkannt werden können. Auch der Winkel der Kamera zum Objekt sowie der Winkel zwischen Kamera und Lichtquelle beeinflussen die Kontrollmöglichkeiten der zu untersuchenden Fehler.The problem with controlling the sheets is the recognition of different errors. For example, color smudges are easier to see when the light source is oriented perpendicular to the object to be inspected instead of obliquely. If the light source illuminates the object vertically, the contrast increases and color smear can be better detected. On the other hand, for example, scratches on the sheets can be better recognized if the light source is arranged at an angle to the object to be inspected is because the scratches due to other reflective properties of the surface can be better recognized by the oblique illumination. The angle of the camera to the object as well as the angle between the camera and the light source influence the control possibilities of the errors to be examined.
Aus der
Es ist deshalb die Aufgabe der vorliegenden Erfindung, eine Inspektionsvorrichtung zu schaffen, welche einfach auf unterschiedliche Inspektionsanforderungen angepasst werden kann, und so ein sicheres Identifizieren von Fehlern unterschiedlicher Art gewährleistet.It is therefore the object of the present invention to provide an inspection device which can be easily adapted to different inspection requirements, thus ensuring a secure identification of errors of different types.
Diese Aufgabe wird gelöst durch die kennzeichnenden Merkmale von Anspruch 1.This object is achieved by the characterizing features of claim 1.
In einer bevorzugten Ausführungsform weist die Inspektionsvorrichtung ein Kontrollsystem auf, welches aus einer Kamera, einer Lichtquelle und einem Gehäuse besteht. Bogenförmiges Material wird mittels einer Transportvorrichtung an dem Kontrollsystem vorbeigeführt. Je nach zu prüfender Fläche des bogenförmigen Materials ist das Kontrollsystem oberhalb und / oder unterhalb der Transportvorrichtung engordnet. Bei dem Kontrollsystem ist der Kamerawinkel bezüglich der zu kontrollierenden Oberfläche des bogenförmigen Materials und / oder der Auftreffwinkel der Strahlen der Lichtquelle auf das bogenförmige Material über eine Verstellung der Kamera und / oder der Lichtquelle und / oder der Transportvorrichtung veränderbar.In a preferred embodiment, the inspection device comprises a control system, which consists of a camera, a light source and a housing. Arc-shaped material is passed by means of a transport device to the control system. Depending on the surface of the sheet material to be tested, the control system is arranged above and / or below the transport device. In the control system, the camera angle with respect to the surface of the sheet material to be controlled and / or the angle of incidence of the rays of the light source on the sheet material via an adjustment of the camera and / or the light source and / or the transport device is changeable.
Durch diese Verstellmöglichkeiten kann die Inspektionsvorrichtung auf einfache Art und Weise an unterschiedliche Inspektionsanforderungen angepasst werden, so dass Fehler unterschiedlicher Art leichter zu detektieren sind.By means of these adjustment possibilities, the inspection device can be adapted in a simple manner to different inspection requirements, so that errors of different types are easier to detect.
In weiteren bevorzugten Ausführungsformen ist die Lichtquelle entweder Teil des Gehäuses und / oder innerhalb oder außerhalb des Gehäuses angeordnet.In further preferred embodiments, the light source is arranged either part of the housing and / or inside or outside the housing.
In einer besonders bevorzugten Ausführungsform kann das Gehäuse über eine Schwenkvorrichtung verschwenkt werden. Dies ermöglicht eine besonders einfache Verstellung des Kamerawinkels und des Beleuchtungswinkels.In a particularly preferred embodiment, the housing can be pivoted via a pivoting device. This allows a particularly simple adjustment of the camera angle and the illumination angle.
Um die Ausleuchtung und Detektion von Fehlern weiter zu optimieren, kann in einer weiteren bevorzugten Ausführungsform die Lichtquelle relativ zur Kamera verschwenkt werden. Hierdurch ist auch eine Anpassung des Ausbuchtungswinkels zum Kamerawinkel möglich.In order to further optimize the illumination and detection of errors, in a further preferred embodiment, the light source can be pivoted relative to the camera. As a result, an adaptation of the bulge angle to the camera angle is possible.
In einer weiteren bevorzugten Ausführungsform ist das Kontrollsystem quer zur Bogen- bzw. Schachteltransportrichtung verstellbar gelagert. Hierdurch ist nicht nur eine Anpassung des Kamera- bzw. Ausleuchtungswinkels möglich, sondern auch die Anpassung an ganz spezifische Bogen- bzw. Schachtelausschnitte. Hierzu ist die Kamera mit Gehäuse beispielsweise auf zwei Rundführungen gelagert und kann so in bekannter Weise mittels einer Spindel quer zur Transportrichtung der Bogen oder Faltschachteln verstellt werden. Hierdurch ist eine Kontrolle an jeder Stelle quer zum Produkttransport, auch außermittig, einfach einstellbar. Weiterhin können auch mehrere Kameras nebeneinander und / oder hintereinander auf diese Weise einfach angeordnet werden, wodurch die Inspektionseinrichtung auf einfache und kostengünstige Art und Weise auf unterschiedliche Arbeitsbreiten und Kontrollen angepasst werden kann.In a further preferred embodiment, the control system is mounted adjustably transversely to the sheet or box transport direction. As a result, not only an adjustment of the camera or illumination angle is possible, but also the adaptation to very specific sheet or Schachtelausschnitte. For this purpose, the camera is mounted with housing, for example, on two round guides and can be adjusted in a known manner by means of a spindle transverse to the transport direction of the sheet or cartons. As a result, a control at any point across the product transport, even off-center, easily adjustable. Furthermore, several cameras can be arranged side by side and / or one behind the other in this way easily, whereby the inspection device can be adapted to different working widths and controls in a simple and cost-effective manner.
In einer weiteren vorteilhaften Ausführungsform ist das Gehäuse der Kamera mit einem Blasluftanschluss verbunden, über den ein Luftstrom in das Gehäuse geführt wird, der am oberen Spalt des Gehäuses, der schlitzförmig ist, austritt. Hierbei wird der obere Spalt entweder durch das Gehäuse selbst oder aus dem Verbund von Gehäuse und Lichtquelle gebildet. Durch den nach oben gerichteten Luftstrom durch das Gehäuse und den schlitzförmigen Spalt wird zum Einen das bogenförmige Material, beispielsweise ein Schachtelzuschnitt, gegen das obere Förderelement gepresst, was die Laufruhe des Schachtelzuschnitts im Bereich der Kamera wesentlich erhöht und somit die Inspektion auch mit hoher Auflösung möglich macht. Zum Anderen wird durch die Blasluft eine Verwirbelung innerhalb des Gehäuses erreicht, wodurch die Optik der Kamera sowie der Schachtelzuschnitt gereinigt wird, und da im Gehäuse ein Überdruck herrscht, das Eintreten von Staub und Stanzresten weitestgehend vermieden. Weiterhin wird durch die Blasluft die Lichtquelle des Kontrollsystems gekühlt, was zu einer höheren Lebensdauer der LEDs führt.In a further advantageous embodiment, the housing of the camera is connected to a blown air connection, via which an air flow is conducted into the housing, which exits at the upper gap of the housing, which is slit-shaped. Here, the upper gap is formed either by the housing itself or from the combination of housing and light source. By the upward flow of air through the housing and the slot-shaped gap on the one hand, the arcuate material, such as a box blank, pressed against the upper conveyor element, which the smoothness of the Box cut significantly increased in the field of camera and thus makes the inspection even with high resolution possible. On the other hand, a turbulence within the housing is achieved by the blowing air, whereby the optics of the camera and the box blank is cleaned, and there is an overpressure in the housing, the occurrence of dust and punching remains largely avoided. Furthermore, the light source of the control system is cooled by the blowing air, resulting in a longer life of the LEDs.
In einer besonders bevorzugten Ausführungsform weist die Inspektionsvorrichtung eine Transportvorrichtung auf, die mindestens eine obere und eine untere Fördereinrichtung mit sich berührenden Fördermittel aufweist. Die untere Fördereinrichtung ist geteilt ausgeführt und besteht aus mindestens zwei Fördereinrichtungen mit einer Lücke zwischen diesen Fördereinrichtungen. Das Kontrollsystem wird in der Lücke zwischen diesen unteren Fördereinrichtungen angeordnet. Selbstverständlich kann auch zusätzlich die obere Fördereinrichtung geteilt ausgeführt sein.In a particularly preferred embodiment, the inspection device has a transport device which has at least one upper and one lower conveying device with contacting conveying means. The lower conveyor is designed split and consists of at least two conveyors with a gap between these conveyors. The control system is placed in the gap between these lower conveyors. Of course, in addition, the upper conveyor can be carried out divided.
Die Lücke zwischen den beiden unteren Fördereinrichtungen ist in ihrem Abstand veränderbar. Dies kann beispielsweise über teleskopierbare untere Riemenförderer verwirklicht werden. Damit kann die Lücke auf unterschiedliche Kamera- bzw. Gehäuseabmessungen bzw. Winkelstellungen angepasst werden.The gap between the two lower conveyors is variable in their distance. This can be achieved for example via telescopic lower belt conveyors. Thus, the gap can be adapted to different camera or housing dimensions or angular positions.
In einer weiteren vorteilhaften Ausführungsform ist die Inspektionsvorrichtung in ein bereits vorhandenes Bearbeitungsmodul integriert. Dies ist eine besonders kostengünstige Lösung. Alternativ kann das Druckbildkontrollsystem auch in ein eigenes Inspektionsmodul integriert werden, welches dann zwischen zwei bereits vorhandenen Bearbeitungsmodulen innerhalb des Maschinenverbandes der Faltschachtelklebemaschine eingebaut wird. Hierdurch wird die Flexibilität bezüglich des Einsatzortes erhöht.In a further advantageous embodiment, the inspection device is integrated into an already existing processing module. This is a particularly cost effective solution. Alternatively, the print image control system can also be integrated into a separate inspection module, which is then installed between two existing processing modules within the machine group of Faltschachtelklebemaschine. This increases the flexibility with respect to the place of use.
Die Inspektionsvorrichtung kann aber auch als Offlineeinrichtung verwendet werden, und so in vorteilhafter Weise mit den für den speziellen Anwendungsfall notwendigen weiteren Modulen wie beispielsweise Anleger, Ausschleusevorrichtung und Ausleger kombiniert werden. Alternativ ist zur Ausschleusevorrichtung auch eine Sortiereinrichtung sinnvoll, wenn es um die Sortierung diverser Produkte geht.However, the inspection device can also be used as an offline device, and thus combined in an advantageous manner with the necessary for the specific application further modules such as feeder, discharge device and boom become. Alternatively, a sorting device is useful for the discharge device when it comes to the sorting of various products.
Nachfolgend wird die erfindungsgemäße Inspektionsvorrichtung anhand einer ausgewählten Ausführungsform in einer Faltschachtelklebemaschine erläutert:
- Figur 1
- zeigt in einer perspektivischen Darstellung beispielhaft einzelne Bearbeitungsstationen einer Faltschachtelklebemaschine
Figur 2- zeigt die durchgehende Transportvorrichtung gemäß Stand der Technik in einer Bearbeitungsstation einer Faltschachtelklebemaschine
Figur 3- erfindungsgemäßes Inspektionsmodul
Figur 4- eine erfindungsgemäße Inspektionsvorrichtung mit verschwenktem Kontrollsystem
- FIG. 1
- shows in a perspective view by way of example individual processing stations a Faltschachtelklebemaschine
- FIG. 2
- shows the continuous transport device according to the prior art in a processing station a Faltschachtelklebemaschine
- FIG. 3
- Inspection module according to the invention
- FIG. 4
- an inspection device according to the invention with a pivoted control system
Die Faltschachtelklebemaschine beginnt in
Anschließend folgt ein Vorbrecher 6 und ein erstes Faltmodul 7. Sowohl durch den Vorbrecher 6 als auch durch das Faltmodul 7 führen quer positionierbare Maschinenkomponenten in Form von Riemenpaaren als Förderelemente, die abhängig vom Zuschnittstyp mit einem Stellantrieb quer positioniert werden.This is followed by a
Auf das Faltmodul 7 folgt eine Drehstation 9. Die Drehstation 9 enthält zum Drehen der Zuschnitte um eine senkrechte Achse um 90° zwei parallel nebeneinander angeordnete Förderstrecken, deren Geschwindigkeit getrennt einstellbar ist. Die Zuschnitte liegen auf beiden Förderstrecken auf, so dass sie bei unterschiedlichen Geschwindigkeiten der beiden Förderstrecken gedreht werden. Die beiden Förderstrecken enthalten angetriebene Rollen als Förderelemente.The folding module 7 is followed by a turning station 9. The turning station 9 contains for rotating the blanks about a vertical axis by 90 ° two parallel juxtaposed Conveyor lines whose speed is separately adjustable. The blanks are on both conveyor lines, so that they are rotated at different speeds of the two conveyor lines. The two conveyor lines contain driven rollers as conveying elements.
Im Anschluss an die Drehstation 9 folgt eine weitere Ausrichtestation 10, die in ihrem Aufbau der Ausrichtestation hinter dem Einleger 1 entspricht. Sie enthält somit wiederum quer positionierbare Maschinenkomponenten in Form von Förderriemenpaaren als Förderelemente.Subsequent to the turning station 9 is followed by a
Die nächste Bearbeitungsstation 13 dient dazu, vom Schachteltyp abhängige Bearbeitungsvorgänge durchzuführen; beispielsweise werden weitere Rilllinien vorgebrochen oder Sonderfaltungen durchgeführt. Auch durch die Bearbeitungsstation 13 führen Riemenpaare als Förderelemente, die mit Stellantrieben quer positioniert werden können.The
Anschließend folgt eine Faltstation 14, in der vorher mit einer Klebenaht versehene Zuschnittteile um 180° umgefaltet werden. Die Faltstation 14 enthält Riemenpaare als Förderelemente und ein Klebstoffauftragwerk, die mittels Stellantrieben in ihre vom Zuschnittstyp abhängige Querposition bewegt werden können. Anschließend folgt eine Überleitstation 15, von der die gefalteten, mit noch nicht abgebundenen Klebenähten versehenen Zuschnitte in allen Teilen exakt ausgerichtet der nachfolgenden Sammel- und Presseinrichtung 16 zugeführt werden. In der Sammel- und Presseinrichtung 16 wird zunächst ein Schuppenstrom aus gefalteten Zuschnitten gebildet, der anschließend zwischen fördernden Pressbändern für einige Zeit unter Druck gehalten wird, damit die Klebenähte abbinden. Die Überleitstation enthält ebenfalls Riemenpaare, die mittels Stellantrieben querverstellt werden können.This is followed by a
In den folgenden schematischen Darstellungen wird der besseren Übersichtlichkeit wegen jeweils nur eine obere und untere Fördereinrichtung dargestellt.In the following schematic illustrations, for better clarity, only one upper and one lower conveyor is shown.
Die Lücke zwischen den Fördervorrichtungen 22, 2' weist in der
In
In dem in der
In der
Das erfindungsgemäße Kontrollsystem 40 kann natürlich auch mit anderen Transportvorrichtungen 20 zu einem Inspektionsmodul gebildet werden, wie bereits weiter oben ausgeführt. Weiterhin kann das Kontrollsystem natürlich auch in anderen Bogen verarbeitenden Maschinen eingesetzt werden, wie beispielsweise in Druckmaschinen, Falzmaschinen oder anderen Weiterverarbeitungsmaschinen. Ebenso ist es möglich, das Kontrollsystem als Inspektionssystem in einer separaten Offline -Einrichtung zur Fehlerkontrolle zu verwenden.Of course, the
- 11
- Einlegerdepositors
- 2, 2'2, 2 '
- untere Fördereinrichtunglower conveyor
- 3,3'3,3 '
- obere Fördereinrichtungupper conveyor
- 44
- Ausrichtestationaligner
- 5, 5'5, 5 '
- Fördermittelfunding
- 66
- Vorbrecherprimary crusher
- 77
- Faltmodulfolding module
- 88th
- Transportvorrichtungtransport device
- 99
- Drehstationturning station
- 1010
- Ausrichtestationaligner
- 1111
- Rundtraversearound Traverse
- 12, 12'12, 12 '
- Fördermittelfunding
- 1313
- Bearbeitungsstationprocessing station
- 1414
- Faltstationfolding station
- 1515
- Überleitstationtransfer station
- 1616
- Sammel- und PresseinrichtungCollecting and pressing device
- 2020
- Transportvorrichtungtransport device
- 2121
- obere Fördereinrichtungupper conveyor
- 22, 22'22, 22 '
- untere Fördereinrichtunglower conveyor
- 2323
- Fördermittelfunding
- 2424
- bogenförmiges Materialarched material
- 2525
- Förderrichtungconveying direction
- 2626
- Umlenkrollenguide rollers
- 2727
- angetriebene Umlenkrolledriven pulley
- 2929
- Rollschieneroll bar
- 3030
- Inspektionsmodulinspection module
- 3131
- Verstellrichtung FördervorrichtungAdjustment direction conveyor
- 3232
- Verstellrichtung FördervorrichtungAdjustment direction conveyor
- 4040
- Kontrollsystemcontrol system
- 4141
- Kameracamera
- 4242
- Lichtquellelight source
- 4343
- Gehäusecasing
- 4444
- Blasluftanschlussair ventilation
- 4545
- Blasluftblowing air
- 4646
- Spalt im oberen GehäuseteilGap in the upper housing part
- 4747
- Befestigungattachment
- 4848
- Befestigungattachment
- 4949
- Flanschflange
- 5050
- Schwenkhalterungswiveling holder
- 5151
- LanglochLong hole
- b, b'b, b '
- AbstandsbreiteGap width
- αα
- Kamerawinkelcamera angle
- ββ
- Auftreffwinkel der Strahlen der LichtquelleAngle of incidence of the rays of the light source
- γγ
- Schwenkwinkelswivel angle
Claims (10)
dadurch gekennzeichnet,
dass der Kamerawinkel (α) bezüglich der zu kontrollierenden Oberfläche des bogenförmigen Materials (24) und / oder der Auftreffwinkel (β) der Strahlen der Lichtquelle (42) auf das bogenförmige Material (24) über eine Verstellung der Kamera (41) und / oder der Lichtquelle (42) und / oder der Transportvorrichtung veränderbar ist.Inspection device for flat sheet material (24) made of paper, cardboard or the like, in particular printed or unprinted sheets, folding box blanks or folded boxes, comprising a control system (40) comprising at least one camera (41), a light source (42) and a housing ( 43), wherein the sheet material (24) is passed by means of a transport device to the control system (40), and wherein the control system (40) is arranged above and / or below the transport device,
characterized,
that the camera angle (α) with respect to the surface of the sheet material (24) to be controlled and / or the angle of incidence (β) of the rays of the light source (42) on the sheet material (24) via an adjustment of the camera (41) and / or the light source (42) and / or the transport device is changeable.
dadurch gekennzeichnet,
dass die Lichtquelle (42) Teil des Gehäuses (43) ist.Inspection device according to claim 1,
characterized,
that the light source (42) is part of the housing (43).
dadurch gekennzeichnet,
dass die Lichtquelle (42) innerhalb des Gehäuses (43) angeordnet ist.Inspection device according to claim 1 or 2,
characterized,
in that the light source (42) is arranged inside the housing (43).
dadurch gekennzeichnet,
dass die Lichtquelle (42) außerhalb des Gehäuses (43) angeordnet ist.Inspection device according to claim 1 or 2,
characterized,
in that the light source (42) is arranged outside the housing (43).
dadurch gekennzeichnet,
dass das Gehäuse (43) über eine Schwenkvorrichtung (49, 50, 51) verschwenkt werden kann.Inspection device according to one of the preceding claims,
characterized,
in that the housing (43) is pivoted via a pivoting device (49, 50, 51) can.
dadurch gekennzeichnet,
dass die Lichtquelle (42) relativ zur Kamera (41) verschwenkt werden kann.Inspection device according to one of the preceding claims,
characterized,
that the light source (42) relative to the camera can be pivoted (41).
dadurch gekennzeichnet,
dass das Kontrollsystem (40) quer zur Bogen- bzw. Schachteltransportrichtung (25) verstellbar gelagert ist.Inspection device according to claim 5 or 6,
characterized,
in that the control system (40) is adjustably mounted transversely to the sheet or box transport direction (25).
dadurch gekennzeichnet,
dass das Gehäuse (43) mit einem Blasluftanschluss (44) verbunden ist, über den ein Luftstrom (45) in das Gehäuse (43) gerührt wird, der am oberen Spalt (46) des Gehäuses (43) austritt.Inspection device according to one of the preceding claims,
characterized,
in that the housing (43) is connected to a blown air connection (44) via which an air flow (45) is stirred into the housing (43) which emerges at the upper gap (46) of the housing (43).
dadurch gekennzeichnet,
dass die Transportvorrichtung mindestens eine obere (21) und eine untere Fördereinrichtung (22) mit sich berührenden Fördermitteln (23) aufweist, und dass die untere Fördereinrichtung (22) geteilt ausgeführt ist und aus mindestens zwei Fördereinrichtungen (22, 22') mit einer variablen Lücke zwischen den Fördereinrichtungen besteht, wobei in der Lücke das Kontrollsystem (40) verschwenkbar angeordnet ist.Inspection device according to one of the preceding claims,
characterized,
in that the transport device has at least one upper (21) and one lower conveyor (22) with contacting conveying means (23), and in that the lower conveyor (22) is split and comprises at least two conveyors (22, 22 ') with a variable conveyor There is a gap between the conveyors, wherein in the gap, the control system (40) is pivotally mounted.
dadurch gekennzeichnet,
dass die Inspektionsvorrichtung als separates Modul einer Faltschachtelklebemaschine in einem eigenen Inspektionsmodul ausgeführt ist, welches zwischen zwei Bearbeitungsmodulen angeordnet ist, oder dass die Inspektionsvorrichtung in einem Bearbeitungsmodul zur Herstellung von Faltschachteln integriert ist.Folding box gluing machine with an inspection device according to one of the preceding claims,
characterized,
that the inspection device is designed as a separate module of a folding box gluer in a separate inspection module, which is arranged between two processing modules, or that the inspection device in a Processing module for the production of folding cartons is integrated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102010036012 | 2010-08-31 | ||
DE102011012807A DE102011012807A1 (en) | 2010-08-31 | 2011-03-02 | Swiveling inspection device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2422972A1 true EP2422972A1 (en) | 2012-02-29 |
EP2422972B1 EP2422972B1 (en) | 2013-09-11 |
EP2422972B2 EP2422972B2 (en) | 2017-08-23 |
Family
ID=44719183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11173908.2A Active EP2422972B2 (en) | 2010-08-31 | 2011-07-14 | Swivelling inspection device |
Country Status (2)
Country | Link |
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EP (1) | EP2422972B2 (en) |
DE (1) | DE102011012807A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2422969B1 (en) | 2010-08-31 | 2013-09-11 | Heidelberger Druckmaschinen AG | Folding box gluing machine |
DE102019105217A1 (en) * | 2019-03-01 | 2020-09-03 | Wilhelm Bahmüller Maschinenbau Präzisionswerkzeuge GmbH | Folding machine for folding box blanks and method for detecting grooves and / or gaps in a folding box blank in real time |
DE102020108611A1 (en) | 2020-03-27 | 2021-09-30 | Sig Technology Ag | Process for the production of packaging material blanks |
WO2023118099A1 (en) * | 2021-12-22 | 2023-06-29 | Bobst Mex Sa | Adjustable conveyor system for a converting machine |
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EP0820865B1 (en) * | 1996-07-25 | 2001-11-28 | Komori Corporation | Sheet inspection apparatus for sheet-fed offset printing press |
DE102004021600A1 (en) † | 2004-05-03 | 2005-12-08 | Gretag-Macbeth Ag | Device for inline monitoring of print quality in sheetfed offset presses |
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- 2011-03-02 DE DE102011012807A patent/DE102011012807A1/en not_active Withdrawn
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EP0668577A1 (en) * | 1994-02-04 | 1995-08-23 | De La Rue Giori S.A. | Quality control assembly for printed sheets, in particular for value-papers |
EP0675466A2 (en) * | 1994-03-28 | 1995-10-04 | Österreichisches Forschungszentrum Seibersdorf Ges.m.b.H. | Method and device for recognizing or checking objects |
EP0842765A2 (en) * | 1996-11-14 | 1998-05-20 | Cmd Corporation | Method and apparatus for detecting a seal on a plastic bag |
DE602004011979T2 (en) | 2003-10-24 | 2009-02-12 | Cognex Technology and Investment Corp., Mountain View | METHOD AND DEVICE FOR PROVIDING OMNIDIRECTIONAL LIGHTING IN A SCANNING DEVICE |
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DE102005050040A1 (en) | 2004-11-15 | 2006-05-18 | Heidelberger Druckmaschinen Ag | Printer e.g. ink-jet printer, controlling device, has camera for imprint on one side of product and connected with control unit for operating printer, and conveyor belt laid along conveying path in loop, where camera is arranged in loop |
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Also Published As
Publication number | Publication date |
---|---|
EP2422972B2 (en) | 2017-08-23 |
EP2422972B1 (en) | 2013-09-11 |
DE102011012807A1 (en) | 2012-03-01 |
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