EP1308406A2 - Device for detecting the position of a side edge - Google Patents

Device for detecting the position of a side edge Download PDF

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Publication number
EP1308406A2
EP1308406A2 EP02023701A EP02023701A EP1308406A2 EP 1308406 A2 EP1308406 A2 EP 1308406A2 EP 02023701 A EP02023701 A EP 02023701A EP 02023701 A EP02023701 A EP 02023701A EP 1308406 A2 EP1308406 A2 EP 1308406A2
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EP
European Patent Office
Prior art keywords
camera
format
sensor system
feed table
format difference
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02023701A
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German (de)
French (fr)
Other versions
EP1308406A3 (en
EP1308406B1 (en
EP1308406B2 (en
Inventor
Arndt Jentsch
Stefan Singer
Bernd Stöber
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Koenig and Bauer AG
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Koenig and Bauer AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/23—Coordinates, e.g. three dimensional coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/60—Optical characteristics, e.g. colour, light
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1315—Edges side edges, i.e. regarded in context of transport

Definitions

  • the invention relates to a device for detecting the position of a side edge of a on a feed table and the sheet fed with the leading edge against front marks, with the side edges within a minimum and a maximum for processing possible format certain format difference range and with the help a measuring device designed as a camera can be detected.
  • a device in which one is designed as a camera Measuring device on a crossbar provided at a distance above the feed table is arranged. Since it is common in sheet-processing machines, either either The camera is to capture the right or left side edge in the sheet transport direction slidably arranged on the traverse. This allows the camera to focus on the spreading area be set in which the sheet to be aligned with the side edge on the Feed table are promoted. This means that the camera must be able to handle the different sheet formats mechanically adjusted and their position to a reference point are recorded.
  • This device requires its implementation and to achieve sufficient Measurement accuracy a lot of work.
  • the object of the invention is to provide a device for detecting the position of the side edge create that can be realized with little effort and with a high measuring accuracy the position of the side edge detected.
  • the object is achieved by a device according to the features of the claim 1 or 6 solved.
  • the solution according to the invention makes it possible without mechanical adjustment the measuring device for any format within the format difference range to capture the actual position of a side edge and with a predetermined target position to compare, a high measuring accuracy is achieved with simple means.
  • a feed table 1 with front marks 4 is shown in FIGS. 1 and 4.
  • the contact marks 4 are spaced apart from one another over the width of the feed table 1 and can be moved from the position on the feed table 1 to a position under the feed table 1 by means not shown.
  • a cross member 5 is provided fixed to the frame at a distance from the surface of the feed table 1. 3, a camera 6 is provided on the crossmember 5, which is firmly connected to the crossmember 5, while in one exemplary embodiment according to FIG. Fig. 2 on the crossbar 5, a first camera 7 and a second camera 8 are firmly connected to the crossbar 5.
  • the camera 6 consists of a housing 9 and a lens 10.
  • a first sensor system 11 is provided in the housing 9 and a second sensor system 12 is spaced apart from it.
  • the sensor systems 11, 12 are designed as image sensors, preferably in line form.
  • the first and second cameras 7, 8 each consist of a housing 13 with a lens 14.
  • a sensor system 15 is provided in each housing 13, which is also designed as an image sensor, preferably in line form.
  • a light source 21 can be assigned to each of the cameras 6, 7, 8, as shown in FIG. 1.
  • the sheets 2 are generally conveyed onto the feed table 1 approximately symmetrically to a machine center 15, the sheet 2 format being able to move between a minimum sheet format F min and a maximum sheet format F max .
  • the first format difference area 17 is assigned to a section located on the left in the sheet transport direction 3, while the second format difference area 18 is located on the opposite side Side is provided. 4, the sheet 2 runs with its side edge 19 into the first format difference area 17 and with the opposite side edge 20 into the second format difference area 18.
  • the first camera 7 is assigned to the first format difference area 17 and the second camera 8 to the second format difference area 18.
  • the first and second cameras 7, 8 are designed in such a way that at least the respective entire format difference area 17, 18 is imaged on the sensor system 15 of the assigned cameras 7, 8.
  • the actual position of the incoming sheet 2 or the sheet 2 aligned with the front marks 4 is to be recorded, the actual position of one of the side edges 19, 20 must be recorded.
  • the left side edge 19 was provided for this purpose, ie the second camera 8 is out of operation and the first camera 7 is activated.
  • the format area 17 is imaged on the sensor system 15 of the first camera 7 by the lens 14 of the first camera 7.
  • the edge 19 of the sheet 2 is formed on the sensor system 15 due to the different reflectivity of the feed table 1 / sheet 2 as a light / dark difference.
  • An actual signal characterizing the actual position of the side edge 19 is generated by the sensor system 15 and fed to processing electronics.
  • the actual signal is compared with a target signal characterizing the target position of the side edge 19 and stored in the processing electronics.
  • an actuating signal is generated in the processing electronics and is fed to actuating elements for moving the left side edge 19 into the desired position.
  • FIG. 3 shows a further embodiment of the solution according to the invention, wherein a camera 6 is firmly connected to the crossbar 5 which is arranged fixed to the frame.
  • the camera 6 has a housing 9 and a lens 10.
  • the camera 6 is arranged approximately symmetrically to the machine center 16, dashed line in FIG. 4, and the lens 10 and the distance between the camera 6 and the surface of the feed table 1 are selected such that the maximum format F max in the camera 6 maps.
  • a first sensor system 11 and a second sensor system 12 are provided in the camera 6.
  • the first format difference area 17 is imaged on the first sensor system 11 and the second format difference area 18 on the second sensor area 12.
  • the format difference areas 17, 18 can optionally be activated, so that the first sensor system 11 is activated for detecting the actual position of the left side edge 19 arriving in the first format difference area 17 and the second sensor system 12 for detecting the right side edge 20 arriving in the second format difference area 18.
  • the actual position of the left side edge 19 is shown on the first sensor system 11 by a light / dark difference and the right side edge 20 on the second sensor system 12 by a light / dark difference.
  • An actual signal is generated by the sensor system 11 or 12, which is compared with a target signal stored in the processing electronics. If the signals do not match, an actuating signal is generated which is supplied with actuating means by which the desired position of the respective side edge 19, 20 is realized.
  • the light source 21 can be designed in such a way that colored light, preferably red, green or blue light, is emitted or different mixed colors are realized from these colors.
  • the surface of the feed table 1 can also be formed as a contrast-enhancing means by polishing it, providing it with a layer of color or with a reflection means. It is also possible to provide exchangeable contrast-enhancing means in the area of the feed table 1 facing the sheet 2. It is also possible, using the surface properties of the sheets 2, to implement a contrast enhancement via an angular arrangement of the light source 21. For this purpose, it is conceivable to eliminate the surface reflection, including the surface of the feed table 1.
  • polarization filters can additionally be brought into the optical beam path.

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

Arrangement for detection of the position of side edges of a sheet on a printer support table when the leading edge of the sheet is aligned against front edge marks and the sheet edges lie within the allowable format range. The arrangement comprises two cameras arranged above format difference regions (17,18) on either side of the sheet in a rigid frame. <??>An Independent claim is made for a detection arrangement with a single camera (6), a single lens (10) and first and second sensor systems (11,12).

Description

Die Erfindung betrifft eine Einrichtung zum Erfassen der Position einer Seitenkante eines auf einen Anlegtisch und mit der Vorderkante gegen Vordermarken geförderten Bogens, wobei die Seitenkanten innerhalb eines durch ein minimales und ein maximales zur Verarbeitung möglichen Formats bestimmten Formatdifferenzbereiches einlaufen und mit Hilfe einer als Kamera ausgebildeten Messeinrichtung detektiert werden.The invention relates to a device for detecting the position of a side edge of a on a feed table and the sheet fed with the leading edge against front marks, with the side edges within a minimum and a maximum for processing possible format certain format difference range and with the help a measuring device designed as a camera can be detected.

Aus der DE 101 36 876 A1 ist eine Vorrichtung bekannt, bei der eine als Kamera ausgebildete Messeinrichtung an einer in einem Abstand über dem Anlegtisch vorgesehenen Traverse angeordnet ist. Da es bei bogenverarbeitenden Maschinen üblich ist, wahlweise entweder die in Bogentransportrichtung rechte oder linke Seitenkante zu erfassen, ist die Kamera verschiebbar auf der Traverse angeordnet. Damit kann die Kamera auf den Streubereich eingestellt werden, in dem die auszurichtenden Bogen mit der Seitenkante auf den Anlegtisch gefördert werden. D.h., die Kamera muss auf die unterschiedlichen Bogenformate mechanisch eingestellt und ihre Lage zu einem Bezugspunkt erfasst werden.From DE 101 36 876 A1 a device is known in which one is designed as a camera Measuring device on a crossbar provided at a distance above the feed table is arranged. Since it is common in sheet-processing machines, either either The camera is to capture the right or left side edge in the sheet transport direction slidably arranged on the traverse. This allows the camera to focus on the spreading area be set in which the sheet to be aligned with the side edge on the Feed table are promoted. This means that the camera must be able to handle the different sheet formats mechanically adjusted and their position to a reference point are recorded.

Diese Vorrichtung erfordert zu ihrer Realisierung sowie zum Erreichen einer ausreichenden Messgenauigkeit einen hohen Aufwand.This device requires its implementation and to achieve sufficient Measurement accuracy a lot of work.

Aufgabe der Erfindung ist es, eine Einrichtung zum Erfassen der Lage der Seitenkante zu schaffen, die mit einem geringen Aufwand zu realisieren ist und mit einer hohen Messgenauigkeit die Lage der Seitenkante erfasst.The object of the invention is to provide a device for detecting the position of the side edge create that can be realized with little effort and with a high measuring accuracy the position of the side edge detected.

Erfindungsgemäß wird die Aufgabe durch eine Einrichtung nach den Merkmalen des Anspruchs 1 oder 6 gelöst.According to the invention the object is achieved by a device according to the features of the claim 1 or 6 solved.

Durch die erfindungsgemäße Lösung ist es möglich, ohne eine mechanische Verstellung der Messeinrichtung bei jedem innerhalb des Formatdifferenzbereiches anfallenden Formats die Istposition einer Seitenkante zu erfassen und mit einer vorgegebenen Sollposition zu vergleichen, wobei mit einfachen Mitteln eine hohe Messgenauigkeit realisiert wird.The solution according to the invention makes it possible without mechanical adjustment the measuring device for any format within the format difference range to capture the actual position of a side edge and with a predetermined target position to compare, a high measuring accuracy is achieved with simple means.

Die Erfindung wird an einem Ausführungsbeispiel näher erläutert. The invention is explained in more detail using an exemplary embodiment.

In den zugehörigen Zeichnungen zeigen

Fig. 1
eine schematische Darstellung eines Anlegtischs mit einer erfindungsgemäßen Einrichtung,
Fig. 2
eine Schnittdarstellung entlang der Linie A-A in Fig. 1,
Fig. 3
eine weitere Ausführungsform,
Fig. 4
einen Anlegtisch in der Draufsicht.
Show in the accompanying drawings
Fig. 1
1 shows a schematic illustration of a feed table with a device according to the invention,
Fig. 2
2 shows a sectional illustration along the line AA in FIG. 1,
Fig. 3
another embodiment,
Fig. 4
a feed table in top view.

In den Figuren 1 und 4 ist ein Anlegtisch 1 mit Vordermarken 4 dargestellt. Die Anlegmarken 4 sind in Abständen zueinander verteilt über die Breite des Anlegtischs 1 angeordnet und durch nicht dargestellte Mittel aus der Position am Anlegtisch 1 in eine Position unter dem Anlegtisch 1 verbringbar ausgeführt. Auf dem Anlegtisch 1 liegt ein Bogen 2, der von einem nicht dargestellten Bändertisch in Bogentransportrichtung 3 auf den Anlegtisch 1 sowie mit der Vorderkante gegen die Vordermarken 4 gefördert wurde. In einem Abstand zur Oberfläche des Anlegtischs 1 ist gestellfest eine Traverse 5 vorgesehen. An der Traverse 5 ist in einem Ausführungsbeispiel nach Fig. 3 eine Kamera 6 vorgesehen, die fest mit der Traverse 5 verbunden ist, während in einem Ausführungsbeispiel gem. Fig. 2 an der Traverse 5 eine erste Kamera 7 und eine zweite Kamera 8 fest mit der Traverse 5 verbunden sind. Die Kamera 6 besteht aus einem Gehäuse 9 und einem Objektiv 10. Im Gehäuse 9 ist ein erstes Sensorsystem 11 und beabstandet dazu ein zweites Sensorsystem 12 vorgesehen. Die Sensorsysteme 11, 12 sind als Bildsensoren, vorzugsweise in Linienform ausgebildet. Die ersten und zweiten Kameras 7,8 bestehen jeweils aus einem Gehäuse 13 mit einem Objektiv 14. In jedem Gehäuse 13 ist ein Sensorsystem 15 vorgesehen, das ebenfalls als Bildsensor, vorzugsweise in Linienform ausgebildet ist. Den Kameras 6,7,8 kann jeweils eine Lichtquelle 21 zugeordnet sein, wie in Fig. 1 gezeigt.
Die Bogen 2 werden in der Regel etwa symmetrisch zu einer Maschinenmitte 15 auf den Anlegtisch 1 gefördert, wobei das Format der Bogen 2 sich zwischen einem minimalen Bogenformat Fmin und einem maximalen Bogenformat Fmax bewegen kann. Damit ergibt sich auf beiden Seiten der auf den Anlegtisch 1 geförderten Bogen 2 jeweils ein Formatdifferenzbereich 17 und 18. In der Figur 4 ist der erste Formatdifferenzbereich 17 einem in Bogentransportrichtung 3 auf der linken Seite gelegenen Abschnitt zugeordnet, während der zweite Formatdifferenzbereich 18 auf der gegenüberliegenden Seite vorgesehen ist. Damit läuft in der Fig. 4 der Bogen 2 mit seiner Seitenkante 19 in den ersten Formatdifferenzbereich 17 und mit der gegenüberliegenden Seitenkante 20 in den zweiten Formatdifferenzbereich 18 ein. Dem ersten Formatdifferenzbereich 17 ist die erste Kamera 7 und dem zweiten Formatdifferenzbereich 18 die zweite Kamera 8 zugeordnet. Die erste und zweite Kamera 7,8 sind so konzipiert, dass sich mindestens der jeweilige gesamte Formatdifferenzbereich 17,18 auf dem Sensorsystem 15 der zugeordneten Kameras 7,8 abbildet.
Soll die Istposition des einlaufenden oder des an den Vordermarken 4 ausgerichteten Bogens 2 erfasst werden, ist die Istposition einer der Seitenkanten 19, 20 zu erfassen. Im Ausführungsbeispiel nach Fig. 4 wurde dazu die linke Seitenkante 19 vorgesehen, d.h. die zweite Kamera 8 ist außer Betrieb und die erste Kamera 7 aktiviert. Durch das Objektiv 14 der ersten Kamera 7 wird der Formatbereich 17 auf dem Sensorsystem 15 der ersten Kamera 7 abgebildet. Dabei bildet sich die Kante 19 des Bogens 2 auf dem Sensorsystem 15, bedingt durch das unterschiedliche Reflexionsvermögen Anlegtisch 1/Bogen 2 als Hell-/Dunkelunterschied ab. Durch das Sensorsystem 15 wird ein die tatsächliche Position der Seitenkante 19 charakterisierendes Istsignal generiert und einer Verarbeitungselektronik zugeführt. In der Verarbeitungselektronik wird das Istsignal mit einem die Sollposition der Seitenkante 19 charakterisierenden, in der Verarbeitungselektronik abgelegten Sollsignal verglichen. Bei Abweichungen wird in der Verarbeitungselektronik ein Stellsignal generiert, das Stellelementen zum Verbringen der linken Seitenkante 19 in die Sollposition zugeführt wird.A feed table 1 with front marks 4 is shown in FIGS. 1 and 4. The contact marks 4 are spaced apart from one another over the width of the feed table 1 and can be moved from the position on the feed table 1 to a position under the feed table 1 by means not shown. On the feed table 1 there is a sheet 2 which was conveyed from a belt table (not shown) in the sheet transport direction 3 onto the feed table 1 and with the front edge against the front marks 4. A cross member 5 is provided fixed to the frame at a distance from the surface of the feed table 1. 3, a camera 6 is provided on the crossmember 5, which is firmly connected to the crossmember 5, while in one exemplary embodiment according to FIG. Fig. 2 on the crossbar 5, a first camera 7 and a second camera 8 are firmly connected to the crossbar 5. The camera 6 consists of a housing 9 and a lens 10. A first sensor system 11 is provided in the housing 9 and a second sensor system 12 is spaced apart from it. The sensor systems 11, 12 are designed as image sensors, preferably in line form. The first and second cameras 7, 8 each consist of a housing 13 with a lens 14. A sensor system 15 is provided in each housing 13, which is also designed as an image sensor, preferably in line form. A light source 21 can be assigned to each of the cameras 6, 7, 8, as shown in FIG. 1.
The sheets 2 are generally conveyed onto the feed table 1 approximately symmetrically to a machine center 15, the sheet 2 format being able to move between a minimum sheet format F min and a maximum sheet format F max . This results in a format difference area 17 and 18 on both sides of the sheets 2 conveyed on the feed table 1. In FIG. 4, the first format difference area 17 is assigned to a section located on the left in the sheet transport direction 3, while the second format difference area 18 is located on the opposite side Side is provided. 4, the sheet 2 runs with its side edge 19 into the first format difference area 17 and with the opposite side edge 20 into the second format difference area 18. The first camera 7 is assigned to the first format difference area 17 and the second camera 8 to the second format difference area 18. The first and second cameras 7, 8 are designed in such a way that at least the respective entire format difference area 17, 18 is imaged on the sensor system 15 of the assigned cameras 7, 8.
If the actual position of the incoming sheet 2 or the sheet 2 aligned with the front marks 4 is to be recorded, the actual position of one of the side edges 19, 20 must be recorded. In the exemplary embodiment according to FIG. 4, the left side edge 19 was provided for this purpose, ie the second camera 8 is out of operation and the first camera 7 is activated. The format area 17 is imaged on the sensor system 15 of the first camera 7 by the lens 14 of the first camera 7. The edge 19 of the sheet 2 is formed on the sensor system 15 due to the different reflectivity of the feed table 1 / sheet 2 as a light / dark difference. An actual signal characterizing the actual position of the side edge 19 is generated by the sensor system 15 and fed to processing electronics. In the processing electronics, the actual signal is compared with a target signal characterizing the target position of the side edge 19 and stored in the processing electronics. In the event of deviations, an actuating signal is generated in the processing electronics and is fed to actuating elements for moving the left side edge 19 into the desired position.

In Figur 3 ist eine weitere Ausführungsform der erfindungsgemäßen Lösung dargestellt, wobei eine Kamera 6 fest mit der gestellfest angeordneten Traverse 5 verbunden ist. Die Kamera 6 weist ein Gehäuse 9 und ein Objektiv 10 auf. Die Kamera 6 ist etwa symmetrisch zur Maschinenmitte 16 angeordnet, gestrichelte Darstellung in Fig. 4, und das Objektiv 10 sowie der Abstand zwischen der Kamera 6 und der Oberfläche des Anlegtischs 1 sind so gewählt, dass sich das maximale Format Fmax in der Kamera 6 abbildet. Da jedoch zur Bestimmung der Istposition der Seitenkanten 19, 20 lediglich ein Erfassen der Formatbereiche 17, 18 erforderlich ist, sind in der Kamera 6 ein erstes Sensorsystem 11 und ein zweites Sensorsystem 12 vorgesehen. Auf dem ersten Sensorsystem 11 wird der erste Formatdifferenzbereich 17 und auf dem zweiten Sensorbereich 12 der zweite Formatdifferenzbereich 18 abgebildet. Die Formatdifferenzbereiche 17, 18 können wahlweise aktiviert werden, so dass zum Erfassen der Istposition der im ersten Formatdifferenzbereich 17 einlaufenden linken Seitenkante 19 das erste Sensorsystem 11 und zum Erfassen der in den zweiten Formatdifferenzbereich 18 einlaufenden rechten Seitenkante 20 das zweite Sensorsystem 12 aktiviert wird. Entsprechend bildet sich auf dem ersten Sensorsystem 11 durch einen Hell-/Dunkelunterschied die Istposition der linken Seitenkante 19 und auf dem zweiten Sensorsystem 12 durch einen Hell-/Dunkelunterschied die rechte Seitenkante 20 ab. Durch das Sensorsystem 11 oder 12 wird ein Istsignal generiert, das mit einem in der Verarbeitungselektronik abgelegten Sollsignal verglichen wird. Bei Nichtübereinstimmung der Signale wird ein Stellsignal generiert, welches Stellmitteln zugeführt wird, durch die die Sollposition der jeweiligen Seitenkante 19,20 realisiert wird.
Um unabhängig von der Beschaffenheit des zur Verarbeitung gelangenden Bogenmaterials die Seitenkanten 19 oder 20 erfassen zu können, ist es möglich, kontrastunterstützende Mittel vorzusehen. So kann die Lichtquelle 21 so ausgebildet sein, dass wahlweise farbiges Licht, vorzugsweise rotes, grünes oder blaues Licht emittiert wird oder aus diesen Farben unterschiedliche Mischfarben realisiert werden. Als kontrastunterstützendes Mittel kann auch die Oberfläche des Anlegtischs 1 ausgebildet werden, indem diese poliert, mit einer Farbschicht oder mit einem Reflexionsmittel versehen wird. Außerdem ist es möglich, in dem dem Bogen 2 zugewandten Bereich des Anlegtischs 1 austauschbar kontrastunterstützende Mittel vorzusehen.
Es ist auch möglich, unter Ausnutzung der Oberflächeneigenschaften der Bogen 2 über Winkelanordnung der Lichtquelle 21 eine Kontrastverstärkung zu realisieren. Hierzu ist es denkbar, unter Einbeziehung der Oberfläche des Anlegtischs 1 den Oberflächenreflex zu eliminieren.
Als kontrastverstärkendes Mittel können hierbei zusätzlich Polarisationsfilter in den optischen Strahlengang gebracht werden. FIG. 3 shows a further embodiment of the solution according to the invention, wherein a camera 6 is firmly connected to the crossbar 5 which is arranged fixed to the frame. The camera 6 has a housing 9 and a lens 10. The camera 6 is arranged approximately symmetrically to the machine center 16, dashed line in FIG. 4, and the lens 10 and the distance between the camera 6 and the surface of the feed table 1 are selected such that the maximum format F max in the camera 6 maps. However, since only a detection of the format areas 17, 18 is required to determine the actual position of the side edges 19, 20, a first sensor system 11 and a second sensor system 12 are provided in the camera 6. The first format difference area 17 is imaged on the first sensor system 11 and the second format difference area 18 on the second sensor area 12. The format difference areas 17, 18 can optionally be activated, so that the first sensor system 11 is activated for detecting the actual position of the left side edge 19 arriving in the first format difference area 17 and the second sensor system 12 for detecting the right side edge 20 arriving in the second format difference area 18. Correspondingly, the actual position of the left side edge 19 is shown on the first sensor system 11 by a light / dark difference and the right side edge 20 on the second sensor system 12 by a light / dark difference. An actual signal is generated by the sensor system 11 or 12, which is compared with a target signal stored in the processing electronics. If the signals do not match, an actuating signal is generated which is supplied with actuating means by which the desired position of the respective side edge 19, 20 is realized.
In order to be able to detect the side edges 19 or 20 regardless of the nature of the sheet material being processed, it is possible to provide contrast-enhancing means. For example, the light source 21 can be designed in such a way that colored light, preferably red, green or blue light, is emitted or different mixed colors are realized from these colors. The surface of the feed table 1 can also be formed as a contrast-enhancing means by polishing it, providing it with a layer of color or with a reflection means. It is also possible to provide exchangeable contrast-enhancing means in the area of the feed table 1 facing the sheet 2.
It is also possible, using the surface properties of the sheets 2, to implement a contrast enhancement via an angular arrangement of the light source 21. For this purpose, it is conceivable to eliminate the surface reflection, including the surface of the feed table 1.
As a contrast-enhancing means, polarization filters can additionally be brought into the optical beam path.

Aufstellung der verwendeten BezugszeichenList of the reference numerals used

11
Anlegtischfeed table
22
Bogenarc
33
BogentransportrichtungSheet transport direction
44
Vordermarkefront lay
55
Traversetraverse
66
Kameracamera
77
erste Kamerafirst camera
88th
zweite Kamerasecond camera
99
Gehäusecasing
1010
Objektivlens
1111
erstes Sensorsystemfirst sensor system
1212
zweites Sensorsystemsecond sensor system
1313
Gehäusecasing
1414
Objektivlens
1515
Sensorsystemsensor system
1616
Maschinenmittemachine center
1717
erster Formatdifferenzbereichfirst format difference range
1818
zweiter Formatdifferenzbereichsecond format difference range
1919
linke Seitenkanteleft side edge
2020
rechte Seitenkanteright side edge
2121
Lichtquellelight source
Fmin F min
minimales Formatminimal format
Fmax F max
maximales Formatmaximum format

Claims (14)

Einrichtung zum Erfassen der Position einer Seitenkante eines auf einem Anlegtisch und mit der Vorderkante gegen Vordermarken geförderten Bogens, wobei die Seitenkanten innerhalb eines durch ein minimales und ein maximales zur Verarbeitung möglichen Formats bestimmten Formatdifferenzbereiches einlaufen und mit Hilfe einer als Kamera ausgebildeten Messeinrichtung detektiert werden, dadurch gekennzeichnet, dass dem ersten Formatdifferenzbereich (17) eine erste Kamera (7) und dem zweiten Formatdifferenzbereich (18) eine zweite Kamera (8) in einem Abstand über dem Anlegtisch (1) gestellfest zugeordnet ist und durch die Kameras (7;8) eine Abbildung des gesamten zugeordneten Formatdifferenzbereichs (17; 18) erfolgt.Means for detecting the position of a side edge of a on a feed table and with the front edge against front marks conveyed sheet, wherein the side edges run in within a minimum of one and a maximum possible processing format specific format difference range and are detected by means of a configured as a camera measuring device, characterized characterized in that the first format difference area (17) is assigned a first camera (7) and the second format difference area (18) is assigned a second camera (8) at a distance above the feed table (1) and one by the cameras (7; 8) The entire assigned format difference range (17; 18) is mapped. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Kameras (7;8) wahlweise aktivierbar sind.Device according to claim 1, characterized in that the cameras (7; 8) can optionally be activated. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Kameras (7;8) ein Objektiv (14) und ein Sensorsystem (15) aufweisen, das aus einem in Linienform ausgeprägten Bildsensor besteht.Device according to claim 1, characterized in that the cameras (7; 8) have a lens (14) and a sensor system (15) which consists of an image sensor which is shaped in line form. Einrichtung nach Anspruch 1 und 3, dadurch gekennzeichnet, dass das Objektiv (14) der Kamera (7) den gesamten Formatdifferenzbereich (17) auf dem Sensorsystem (15) abbildet.Device according to claims 1 and 3, characterized in that the lens (14) of the camera (7) images the entire format difference area (17) on the sensor system (15). Einrichtung nach Anspruch 1 und 3, dadurch gekennzeichnet, dass das Objektiv (14) der Kamera (8) den gesamten Formatdifferenzbereich (18) auf dem Sensorsystem (15) abbildet.Device according to claims 1 and 3, characterized in that the lens (14) of the camera (8) images the entire format difference area (18) on the sensor system (15). Einrichtung zum Erfassen der Position einer Seitenkante eines auf einem Anlegtisch und mit der Vorderkante gegen Vordermarken geförderten Bogens, wobei die Seitenkanten innerhalb eines durch ein minimales und ein maximales zur Verarbeitung möglichen Formats bestimmten Formatdifferenzbereiches einlaufen und mit Hilfe einer als Kamera ausgebildeten Messeinrichtung detektiert werden, dadurch gekennzeichnet, dass in einem Abstand über dem Anlegtisch (1) eine Kamera (6) gestellfest angeordnet ist, durch die eine Abbildung des gesamten zur Verarbeitung gelangenden maximalen Formatbereichs (Fmax) erfolgt. Means for detecting the position of a side edge of a on a feed table and with the front edge against front marks conveyed sheet, wherein the side edges run in within a minimum of one and a maximum possible processing format specific format difference range and are detected by means of a configured as a camera measuring device, characterized characterized in that a camera (6) is arranged fixed to the frame at a distance above the feed table (1), by means of which the entire maximum format range (F max ) to be processed is imaged. Einrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Kamera (6) ein Objektiv (10) sowie ein erstes Sensorsystem (11) und ein zweites Sensorsystem (12) aufweist.Device according to claim 6, characterized in that the camera (6) has a lens (10) and a first sensor system (11) and a second sensor system (12). Einrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Objektiv (10) den ersten Formatdifferenzbereich (17) auf dem ersten Sensorsystem (11) und den zweiten Formatdifferenzbereich (18) auf dem zweiten Sensorsystem (12) abbildet.Device according to claim 6, characterized in that the objective (10) images the first format difference area (17) on the first sensor system (11) and the second format difference area (18) on the second sensor system (12). Einrichtung nach Anspruch 6 bis 9, dadurch gekennzeichnet, dass die Sensorsysteme (11,12) wahlweise aktivierbar sind.Device according to claims 6 to 9, characterized in that the sensor systems (11, 12) can optionally be activated. Einrichtung nach Anspruch 1 und 6 und 10, dadurch gekennzeichnet, dass den Kameras (6,7,8) kontrastunterstützende Mittel zugeordnet sind.Device according to claim 1 and 6 and 10, characterized in that contrast-supporting means are assigned to the cameras (6, 7, 8). Einrichtung nach Anspruch 1, 6 und 10, dadurch gekennzeichnet, dass als kontrastunterstützendes Mittel den Kameras (6,7,8) eine Lichtquelle (21) zugeordnet ist.Device according to claim 1, 6 and 10, characterized in that a light source (21) is assigned to the cameras (6, 7, 8) as a contrast-enhancing means. Einrichtung nach Anspruch 1, 6, 10 und 11, dadurch gekennzeichnet, dass die Lichtquelle (21) wahlweise farbiges Licht emittiert.Device according to claim 1, 6, 10 and 11, characterized in that the light source (21) optionally emits colored light. Einrichtung nach Anspruch 1 und 6, dadurch gekennzeichnet, dass als kontrastunterstützendes Mittel die Oberfläche des Anlegtischs (1) mit einer Farb- oder Reflexionsschicht versehen ist.Device according to claims 1 and 6, characterized in that the surface of the feed table (1) is provided with a color or reflection layer as a contrast-enhancing means. Einrichtung nach Anspruch 1, 6 und 13, dadurch gekennzeichnet, dass in der Oberfläche des Anlegtischs (1) als kontrastunterstützendes Mittel mit einer Farbschicht oder Reflexionsschicht versehene auswechselbare Einschübe vorgesehen sind.Device according to claim 1, 6 and 13, characterized in that interchangeable inserts provided with a color layer or reflection layer are provided in the surface of the feed table (1) as a contrast-enhancing means.
EP02023701A 2001-11-02 2002-10-23 Device for detecting the position of a side edge Expired - Lifetime EP1308406B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10154036 2001-11-02
DE10154036A DE10154036A1 (en) 2001-11-02 2001-11-02 Device for detecting the position of a side edge

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EP1308406A2 true EP1308406A2 (en) 2003-05-07
EP1308406A3 EP1308406A3 (en) 2004-03-17
EP1308406B1 EP1308406B1 (en) 2006-03-08
EP1308406B2 EP1308406B2 (en) 2009-07-08

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CN108820945A (en) * 2018-06-15 2018-11-16 南通大学 A kind of film automatic charging device

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DE102022105873A1 (en) 2022-03-14 2023-09-14 Körber Technologies Gmbh Measuring device in the energy cell producing industry for measuring the position and/or orientation of flat elements conveyed in a conveying direction

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Also Published As

Publication number Publication date
EP1308406A3 (en) 2004-03-17
EP1308406B1 (en) 2006-03-08
EP1308406B2 (en) 2009-07-08
DE10154036A1 (en) 2003-05-15
DE50205999D1 (en) 2006-05-04

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