EP1300354A2 - Device for detecting the position of an edge of a processed material - Google Patents

Device for detecting the position of an edge of a processed material Download PDF

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Publication number
EP1300354A2
EP1300354A2 EP02020909A EP02020909A EP1300354A2 EP 1300354 A2 EP1300354 A2 EP 1300354A2 EP 02020909 A EP02020909 A EP 02020909A EP 02020909 A EP02020909 A EP 02020909A EP 1300354 A2 EP1300354 A2 EP 1300354A2
Authority
EP
European Patent Office
Prior art keywords
ccd
row
ccd lines
line
edge
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
EP02020909A
Other languages
German (de)
French (fr)
Other versions
EP1300354B1 (en
EP1300354A3 (en
Inventor
Arndt Jentzsch
Jörg Seefeld
Gerald Quapil
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication date
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Publication of EP1300354A2 publication Critical patent/EP1300354A2/en
Publication of EP1300354A3 publication Critical patent/EP1300354A3/en
Application granted granted Critical
Publication of EP1300354B1 publication Critical patent/EP1300354B1/en
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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
    • 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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect
    • 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
    • B65H7/06—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 responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/10—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 responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect side register
    • 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
    • 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
    • B65H2553/41—Photoelectric detectors
    • B65H2553/414—Photoelectric detectors involving receptor receiving light reflected by a reflecting surface and emitted by a separate emitter
    • 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
    • B65H2553/41—Photoelectric detectors
    • B65H2553/416—Array arrangement, i.e. row of emitters 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
    • B65H2553/00—Sensing or detecting means
    • B65H2553/80—Arangement of the sensing means
    • B65H2553/82—Arangement of the sensing means with regard to the direction of transport of the handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/50—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves
    • B65H2557/512—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves infrared
    • 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

Definitions

  • the invention relates to a device for detecting the position of an edge of a material to be processed, which is fed to a printing press with a reflex line optoelectric measuring device consisting of an illumination device and at least one there are two consecutive receivers with CCD lines.
  • the object of the invention is to design a known reflex line so that it is without restrictions Edges of all formats occurring within a format difference range can capture.
  • the object is achieved by a device according to the features of the claim 1 solved.
  • the solution according to the invention makes it possible to minimize the evaluation times and a trouble-free detection of the position of an edge within a format difference area to realize.
  • a feed table 1 with processing goods 2, which is designed as a sheet 3, is shown.
  • the sheets 3 are transported in the conveying direction 4 on the feed table 1 and with the front edge against front marks 5.
  • a channel 7 is provided in the feed table 1, which runs transverse to the conveying direction 4.
  • the channel 7 extends over at least one format difference area 8 that is characteristic of the respective printing press.
  • the format difference area 8 is formed from the difference between the maximum and the minimum format of the sheets to be processed, so that the sheet 3 each has a format difference area 8.
  • the device is only described on the basis of the format difference area 8 located on the left in the conveying direction 4.
  • An optoelectric measuring device designed as a reflex line 9 is arranged in the channel 7.
  • the reflex line 9 is permanently installed in the channel 7 and also extends at least over the format difference area 8. This ensures that the edge 6 of the processing material 2 supplied within the format difference area 8 can be detected.
  • the channel 7 is closed with a transparent cover strip 10, so that the surface of the feed table 1 and the cover strip 10 form a common plane.
  • the reflex line 9 consists of CCD lines 11, 12, 13, 14, 15, which are arranged with gaps in a row in a first row and in a second row.
  • the first row and the second row run parallel to one another at a distance from one another, the CCD lines 12, 14 of the second row and the CCD lines 11, 13, 15 of the first row being arranged with a gap to one another.
  • the opposite CCD lines form overlaps X.
  • Each of the CCD lines 11 to 15 is assigned an LED line 16 as the lighting device.
  • the CCD lines 11, 12, 13, 14, 15 consist of a large number of measuring elements arranged side by side in a row.
  • the CCD lines 11 to 15 and the LED lines 16 assigned to them are arranged at a distance from the material to be processed 2.
  • the rays emitted by the LED lines 16 are reflected in the area covered by the processed item 2 from the underside of the processed item and detected by the measuring elements of the CCD lines 11 to 15, while none or in the area that is not covered by the processed item 2 there is only a slight reflection of the rays, so that the position of the edge 6 is shown as a light / dark difference on the CCD lines 11 to 15.
  • An actual signal is generated by the respective CCD line 11 to 15 and is fed to processing electronics.
  • the actual signal is compared with a target signal stored in the processing electronics and, in the event of a deviation, an actuating signal is generated which is fed to actuating elements for bringing the edge 6 of the material to be processed 2 into the target position.
  • the CCD line 11-15 on which the edge 6 is formed is determined by the processing electronics when the support is changed.
  • the entire reflex line 9 is activated and a sheet 3 is transported onto the feed table 1 and with the front edge against the front marks 5.
  • the edge 6 forms on one of the CCD lines 11-15, which generates a signal which is recorded by the processing electronics and thus defines the CCD line 11-15, which is required for the processing of the order.
  • the edge 6 on the CCD line 11 shows the edge 6 on the CCD line 11, so that only this, including the associated LED line 16, is controlled by the processing electronics. It is of course taken into account that on both sides of the position of the edge 6 shown in FIG. 1, a tolerance range is to be taken into account in which the arcs 3 run in offset. If a format is processed in which the sheet 3 runs in with the edge 6, for example in the area of the overlap X formed by the CCD lines 12, 14, the processing electronics activate the CCD lines 12, 14 including the associated LED lines 16 and thus realizes short evaluation times.
  • the CCD lines 11-15 colored light emitted from the LED rows 16 is used as a contrast-enhancing agent.
  • a contrast-enhancing means at a distance above the reflex line 9, which is designed as a colored or reflective layer applied to a carrier material.

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Handling Of Cut Paper (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

Device for detecting the position of the edge of print material (2) or paper sheets (3) using an optoelectronic measurement unit or reflex row, comprising two parallel CCD rows arranged behind one another in the transport direction. The CCD rows (11-15) are staggered relative to each other in a direction perpendicular to the transport direction, so that gaps in one row are covered by CCD cells in the other row.

Description

Die Erfindung betrifft eine Einrichtung zum Erfassen der Lage einer Kante eines Verarbeitungsgutes, das einer Druckmaschine zugeführt wird, mit einer als Reflexzeile ausgebildeten optoelektrischen Messeinrichtung, die aus einer Beleuchtungseinrichtung und einem mindestens zwei hintereinander angeordnete CCD-Zeilen aufweisenden Empfänger besteht.The invention relates to a device for detecting the position of an edge of a material to be processed, which is fed to a printing press with a reflex line optoelectric measuring device consisting of an illumination device and at least one there are two consecutive receivers with CCD lines.

Aus der DE 101 36 870 A1 ist es bekannt, eine optoelektrische Messeinrichtung zum Erfassen der Lage der Kante eines Verarbeitungsgutes als ortsfest angeordnete, sich über den gesamten Formatdifferenzbereich erstreckende. Reflexzeile auszubilden. Die Reflexzeile besteht aus einer Beleuchtungseinrichtung und einem Empfänger, der sich aus einzelnen, hintereinander geschalteten, als funktionelle Einheiten ausgebildeten CCD-Zeilen zusammensetzt.From DE 101 36 870 A1 it is known to use an optoelectric measuring device for detection the position of the edge of a material to be processed as a fixed, over the entire format difference range. Train reflex line. The reflex line exists from a lighting device and a receiver, which is made up of individual, one behind the other switched CCD lines formed as functional units.

Nachteilig ist, dass eine in den Bereichen zwischen jeweils zwei benachbarten CCD-Zeilen sich abbildende Kante von den CCD-Zeilen nicht erfasst wird. Das bedeutet, dass eine derartige Reflexzeile nur eingeschränkt für das Erfassen des innerhalb eines Formatdifferenzbereiches anfallenden Formatspektrums geeignet ist.
Außerdem ist es von Nachteil, dass sich aufgrund der Länge der sich über den gesamten Formatdifferenzbereich erstreckenden, aus hintereinander geschalteten CCD-Zeilen bestehenden Reflexzeile, lange Auswertzeiten ergeben, die nachteilig die Effektivität der Einrichtung beeinflussen.It is disadvantageous that an edge which is formed in the areas between two adjacent CCD lines is not detected by the CCD lines. This means that such a reflex line is only suitable to a limited extent for capturing the format spectrum that arises within a format difference range.
In addition, it is disadvantageous that, due to the length of the reflex line, which consists of CCD lines connected in series and extends over the entire format difference range, long evaluation times result, which adversely affect the effectiveness of the device.

Aufgabe der Erfindung ist, eine bekannte Reflexzeile so auszugestalten, dass diese ohne Einschränkungen Kanten sämtlicher innerhalb eines Formatdifferenzbereiches anfallender Formate erfassen kann.The object of the invention is to design a known reflex line so that it is without restrictions Edges of all formats occurring within a format difference range can capture.

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

Durch die erfindungsgemäße Lösung ist es möglich, die Auswertzeiten zu minimieren und eine störungsfreie Erfassung der Lage einer Kante innerhalb eines Formatdifferenzbereiches zu realisieren.The solution according to the invention makes it possible to minimize the evaluation times and a trouble-free detection of the position of an edge within a format difference area to realize.

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

In den zugehörigen Zeichnungen zeigen

Fig. 1
eine Draufsicht auf eine schematische Darstellung eines Anlegtischs mit einer die Lage einer Kante erfassenden Einrichtung,
Fig. 2
eine Schnittdarstellung gem. der Linie A-A in Fig. 1.
Show in the accompanying drawings
Fig. 1
2 shows a plan view of a schematic illustration of a feed table with a device that detects the position of an edge,
Fig. 2
a sectional view acc. the line AA in Fig. 1st

In Figur 1 ist ein Anlegtisch 1 mit Verarbeitungsgut 2, das als Bogen 3 ausgebildet ist, dargestellt. Die Bogen 3 werden in Förderrichtung 4 auf den Anlegtisch 1 und mit der Vorderkante gegen Vordermarken 5 transportiert. Zum Erfassen der Lage einer Kante 6 des Bogens 3 ist im Anlegtisch 1 ein Kanal 7 vorgesehen, der quer zur Förderrichtung 4 verläuft. Der Kanal 7 erstreckt sich mindestens über einen für die jeweilige Druckmaschine charakteristischen Formatdifferenzbereich 8. Der Formatdifferenzbereich 8 wird gebildet aus der Differenz zwischen dem maximalen und dem minimalen Format der zur Verarbeitung gelangenden Bogen, so dass sich beidseitig der Bogen 3 jeweils ein Formatdifferenzbereich 8 ergibt. Es wird jedoch nur anhand des in Förderrichtung 4 auf der linken Seite gelegenen Formatdifferenzbereichs 8 die Einrichtung beschrieben.
Im Kanal 7 ist eine als Reflexzeile 9 ausgebildete optoelektrische Messeinrichtung angeordnet. Die Reflexzeile 9 ist fest im Kanal 7 installiert und erstreckt sich ebenfalls mindestens über den Formatdifferenzbereich 8. Damit wird sichergestellt, dass die Kante 6 des innerhalb des Formatdifferenzbereichs 8 zugeführten Verarbeitungsgutes 2 erfasst werden kann.
Der Kanal 7 ist mit einem durchsichtigen Abdeckstreifen 10 verschlossen, so dass die Oberfläche des Anlegtischs 1 und des Abdeckstreifens 10 eine gemeinsame Ebene bilden.
Die Reflexzeile 9 besteht im Ausführungsbeispiel aus CCD-Zeilen 11, 12, 13, 14, 15, die mit Lücken hintereinander in einer ersten Reihe und in einer zweiten Reihe angeordnet sind. Es ist aber auch möglich, weitere n CCD-Zeilen vorzusehen.
Die erste Reihe und die zweite Reihe verlaufen parallel in einem Abstand zueinander, wobei die CCD-Zeilen 12, 14 der zweiten Reihe und die CCD-Zeilen 11, 13, 15 der ersten Reihe auf Lücke zueinander angeordnet sind. Dabei bilden die sich gegenüberliegenden CCD-Zeilen Überschneidungen X.
Jeder der CCD-Zeilen 11 bis 15 ist eine LED-Zeile 16 als Beleuchtungseinrichtung zugeordnet. Es ist aber auch möglich, eine als funktionelle Einheit ausgebildete, sich über die gesamte Länge der Reflexzeile 9 erstreckende Beleuchtungseinrichtung vorzusehen. In Figure 1, a feed table 1 with processing goods 2, which is designed as a sheet 3, is shown. The sheets 3 are transported in the conveying direction 4 on the feed table 1 and with the front edge against front marks 5. To detect the position of an edge 6 of the sheet 3, a channel 7 is provided in the feed table 1, which runs transverse to the conveying direction 4. The channel 7 extends over at least one format difference area 8 that is characteristic of the respective printing press. The format difference area 8 is formed from the difference between the maximum and the minimum format of the sheets to be processed, so that the sheet 3 each has a format difference area 8. However, the device is only described on the basis of the format difference area 8 located on the left in the conveying direction 4.
An optoelectric measuring device designed as a reflex line 9 is arranged in the channel 7. The reflex line 9 is permanently installed in the channel 7 and also extends at least over the format difference area 8. This ensures that the edge 6 of the processing material 2 supplied within the format difference area 8 can be detected.
The channel 7 is closed with a transparent cover strip 10, so that the surface of the feed table 1 and the cover strip 10 form a common plane.
In the exemplary embodiment, the reflex line 9 consists of CCD lines 11, 12, 13, 14, 15, which are arranged with gaps in a row in a first row and in a second row. However, it is also possible to provide further n CCD lines.
The first row and the second row run parallel to one another at a distance from one another, the CCD lines 12, 14 of the second row and the CCD lines 11, 13, 15 of the first row being arranged with a gap to one another. The opposite CCD lines form overlaps X.
Each of the CCD lines 11 to 15 is assigned an LED line 16 as the lighting device. However, it is also possible to provide a lighting device designed as a functional unit and extending over the entire length of the reflex line 9.

Die CCD-Zeilen 11, 12, 13, 14, 15 bestehen aus einer Vielzahl von in einer Reihe nebeneinander angeordneten Messelementen.
Die CCD-Zeilen 11 bis 15 und die ihnen zugeordneten LED-Zeilen 16 sind in einem Abstand zum Verarbeitungsgut 2 angeordnet. Die von den LED-Zeilen 16 ausgesendeten Strahlen werden im vom Verarbeitungsgut 2 abgedeckten Bereich von der Unterseite des Verarbeitungsgutes reflektiert und von den Messelementen der CCD-Zeilen 11 bis 15 erfasst, während in dem Bereich, der nicht vom Verarbeitungsgut 2 abgedeckt ist, keine oder nur eine geringe Reflexion der Strahlen erfolgt, so dass sich die Lage der Kante 6 als Hell/Dunkelunterschied auf den CCD-Zeilen 11 bis 15 abbildet. Durch die jeweilige CCD-Zeile 11 bis 15 wird ein Istsignal generiert, welches einer Verarbeitungselektronik zugeführt wird. In der Verarbeitungselektronik wird das Istsignal mit einem in der Verarbeitungselektronik abgelegten Sollsignal verglichen und bei einer Abweichung ein Stellsignal generiert, das Stellelementen zum Verbringen der Kante 6 des Verarbeitungsgutes 2 in die Sollposition zugeführt wird. Um die Auswertzeiten der Reflexzeile 9 zu verkürzen, wird bei einem Auflagewechsel durch die Verarbeitungselektronik die CCD-Zeile 11-15 bestimmt, auf der sich die Kante 6 abbildet. Dazu wird die gesamte Reflexzeile 9 aktiviert und ein Bogen 3 auf den Anlegtisch 1 und mit der Vorderkante gegen die Vordermarken 5 transportiert. Dabei bildet sich die Kante 6 auf einer der CCD-Zeilen 11 - 15 ab, die ein Signal generiert, welches von der Verarbeitungselektronik erfasst und damit die CCD-Zeile 11-15 festlegt, welche für die Abarbeitung des Auftrages erforderlich ist. Im Ausführungsbeispiel gem. Fig. 1 bildet sich die Kante 6 auf der CCD-Zeile 11 ab, so dass lediglich diese einschließlich der zugeordneten LED-Zeile 16 von der Verarbeitungselektronik angesteuert wird. Dabei wird natürlich berücksichtigt, dass beidseitig der in der Figur 1 eingezeichneten Lage der Kante 6 ein Toleranzbereich zu berücksichtigen ist, in dem die Bogen 3 versetzt einlaufen.
Wird ein Format verarbeitet, bei dem die Bogen 3 mit der Kante 6 z.B. im Bereich der von den CCD-Zeilen 12, 14 gebildeten Überschneidung X einläuft, werden durch die Verarbeitungselektronik die CCD-Zeilen 12, 14 einschließlich der zugehörigen LED-Zeilen 16 aktiviert und damit geringe Auswertzeiten realisiert.
Um zu sichern, dass bei der Verarbeitung jeden Materials, d.h. unabhängig von der Struktur der Oberfläche, der Farbe oder davon, ob das Material durchsichtig oder undurchsichtig ist, eine exakte Erfassung der Lage der Kante 6 durch die CCD-Zeilen 11-15 realisiert werden kann, wird als ein kontrastunterstützendes Mittel farbiges Licht verwendet, das von den LED-Zeilen 16 emittiert wird. Es ist aber auch möglich, in einem Abstand über der Reflexzeile 9 ein kontrastunterstützendes Mittel vorzusehen, das als einer auf einem Trägermaterial aufgebrachten farbigen oder reflektierenden Schicht ausgebildet ist.
Statt die Reflexzeile 9 im Kanal 7 des Anlegtischs anzuordnen, ist es auch möglich, diese an einer in einem Abstand über dem Anlegtisch 1 vorgesehene Traverse anzuordnen und ggf. die Oberfläche des Anlegtischs 1 als kontrastunterstützendes Mittel auszubilden. The CCD lines 11, 12, 13, 14, 15 consist of a large number of measuring elements arranged side by side in a row.
The CCD lines 11 to 15 and the LED lines 16 assigned to them are arranged at a distance from the material to be processed 2. The rays emitted by the LED lines 16 are reflected in the area covered by the processed item 2 from the underside of the processed item and detected by the measuring elements of the CCD lines 11 to 15, while none or in the area that is not covered by the processed item 2 there is only a slight reflection of the rays, so that the position of the edge 6 is shown as a light / dark difference on the CCD lines 11 to 15. An actual signal is generated by the respective CCD line 11 to 15 and is fed to processing electronics. In the processing electronics, the actual signal is compared with a target signal stored in the processing electronics and, in the event of a deviation, an actuating signal is generated which is fed to actuating elements for bringing the edge 6 of the material to be processed 2 into the target position. In order to shorten the evaluation times of the reflex line 9, the CCD line 11-15 on which the edge 6 is formed is determined by the processing electronics when the support is changed. For this purpose, the entire reflex line 9 is activated and a sheet 3 is transported onto the feed table 1 and with the front edge against the front marks 5. In this case, the edge 6 forms on one of the CCD lines 11-15, which generates a signal which is recorded by the processing electronics and thus defines the CCD line 11-15, which is required for the processing of the order. In the embodiment according to 1 shows the edge 6 on the CCD line 11, so that only this, including the associated LED line 16, is controlled by the processing electronics. It is of course taken into account that on both sides of the position of the edge 6 shown in FIG. 1, a tolerance range is to be taken into account in which the arcs 3 run in offset.
If a format is processed in which the sheet 3 runs in with the edge 6, for example in the area of the overlap X formed by the CCD lines 12, 14, the processing electronics activate the CCD lines 12, 14 including the associated LED lines 16 and thus realizes short evaluation times.
To ensure that when processing any material, ie regardless of the structure of the surface, the color or whether the material is transparent or opaque, an exact detection of the position of the edge 6 is realized by the CCD lines 11-15 colored light emitted from the LED rows 16 is used as a contrast-enhancing agent. However, it is also possible to provide a contrast-enhancing means at a distance above the reflex line 9, which is designed as a colored or reflective layer applied to a carrier material.
Instead of arranging the reflex line 9 in the channel 7 of the feed table, it is also possible to arrange it on a traverse provided at a distance above the feed table 1 and, if necessary, to design the surface of the feed table 1 as a contrast-enhancing means.

Aufstellung der verwendeten BezugszeichenList of the reference numerals used

11
Anlegtischfeed table
22
Verarbeitungsgutprocess material
33
Bogen'Arc'
44
Förderrichtungconveying direction
55
Vordermarkefront lay
66
Kanteedge
77
Kanalchannel
88th
FormatdifferenzbereichFormat difference range
99
Reflexzeilereflex line
1010
Abdeckstreifenflap
1111
CCD-ZeileCCD line
1212
CCD-ZeileCCD line
1313
CCD-ZeileCCD line
1414
CCD-ZeileCCD line
1515
CCD-ZeileCCD line
1616
LED-ZeileLED line
XX
Überschneidungoverlap

Claims (7)

Einrichtung zum Erfassen der Lage einer Kante eines Verarbeitungsgutes, das einer Druckmaschine zugeführt wird, mit einer als Reflexzeile ausgebildeten optoelektrischen Messeinrichtung, die aus einer Beleuchtungseinrichtung und einem mindestens zwei hintereinander angeordnete CCD-Zeilen aufweisenden Empfänger besteht, dadurch gekennzeichnet, dass die CCD-Zeilen (11, 12, 13, 14, 15 bis n) in einer ersten Reihe und in einer zu dieser parallel in einem Abstand verlaufenden zweiten Reihe in Lücken hintereinander angeordnet sind, wobei den Lücken zwischen den CCD-Zeilen (11, 13, 15, n) der ersten Reihe die CCD-Zeilen (12, 14, n±1) der zweiten Reihe gegenüberliegend angeordnet sind und jede der CCD-Zeilen (11 bis n+1) direkt mit einer Verarbeitungselektronik verbunden sind.Device for detecting the position of an edge of a material to be processed, which is fed to a printing press, with an optoelectric measuring device designed as a reflex line, which consists of an illumination device and a receiver having at least two CCD lines arranged one behind the other, characterized in that the CCD lines ( 11, 12, 13, 14, 15 to n) are arranged one behind the other in a first row and in a second row running parallel to and spaced apart in gaps, the gaps between the CCD lines (11, 13, 15, n ) the first row, the CCD lines (12, 14, n ± 1) of the second row are arranged opposite each other and each of the CCD lines (11 to n + 1) are directly connected to processing electronics. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jeder CCD-Zeile (11 bis n+1) eine als LED-Zeile (16) ausgebildete Beleuchtungseinrichtung zugeordnet ist.Device according to claim 1, characterized in that each CCD line (11 to n + 1) is assigned a lighting device designed as an LED line (16). Einrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die LED-Zeile (16) als eine sich über die gesamte Länge der Reflexzeile (9) erstreckende Beleuchtungseinrichtung ausgebildet ist.Device according to claim 1 and 2, characterized in that the LED line (16) is designed as a lighting device extending over the entire length of the reflex line (9). Einrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass jede der LED-Zeilen (16) direkt mit der Verarbeitungselektronik gekoppelt ist.Device according to claim 1 and 2, characterized in that each of the LED rows (16) is directly coupled to the processing electronics. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass eine der CCD-Zeilen (11, 13, 15, n) der ersten Reihe zu den CCD-Zeilen (12, 14, n±1) so angeordnet sind, dass diese eine Überschneidung (X) bilden.Device according to claim 1, characterized in that one of the CCD lines (11, 13, 15, n) of the first row to the CCD lines (12, 14, n ± 1) are arranged such that they overlap (X ) form. Einrichtung nach Anspruch 1 und 5, dadurch gekennzeichnet, dass jeweils eine der CCD-Zeilen (11 bis n+1) zum Erfassen der Lage der Kante (6) durch die Verarbeitungselektronik aktivierbar ist.Device according to claim 1 and 5, characterized in that one of the CCD lines (11 to n + 1) can be activated by the processing electronics for detecting the position of the edge (6). Einrichtung nach Anspruch 1 und 5, dadurch gekennzeichnet, dass jeweils zwei eine Überschneidung (X) bildende CCD-Zeilen (11 bis n+1) durch die Verarbeitungselektronik aktivierbar sind.Device according to claims 1 and 5, characterized in that two CCD lines (11 to n + 1) forming an overlap (X) can be activated by the processing electronics.
EP02020909A 2001-10-06 2002-09-19 Device for detecting the position of an edge of a processed material Expired - Lifetime EP1300354B1 (en)

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EP1300354B1 (en) 2007-01-03
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EP1300354A3 (en) 2004-06-23

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