EP1854751A1 - Device for controlling plane products held together in a clamp - Google Patents

Device for controlling plane products held together in a clamp Download PDF

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Publication number
EP1854751A1
EP1854751A1 EP07002590A EP07002590A EP1854751A1 EP 1854751 A1 EP1854751 A1 EP 1854751A1 EP 07002590 A EP07002590 A EP 07002590A EP 07002590 A EP07002590 A EP 07002590A EP 1854751 A1 EP1854751 A1 EP 1854751A1
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EP
European Patent Office
Prior art keywords
sensor
products
detection
product
clamp
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
EP07002590A
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German (de)
French (fr)
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EP1854751B1 (en
Inventor
Carl Conrad Mäder
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Ferag AG
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Ferag AG
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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
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4224—Gripping piles, sets or stacks of articles
    • B65H2301/42244—Sets in which articles are offset to each other
    • 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
    • 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
    • B65H2511/512—Marks, e.g. invisible to the human eye; Patterns

Definitions

  • the present invention relates to a device for controlling flat products transported by means of clamps in a transport device, in particular printed products, according to claim 1.
  • the object is to provide an alternative control device which makes it possible to control the number of sheet-like products transported in a clamp in the simplest and most reliable manner possible.
  • the device according to the invention serves for the control of flat products transported by means of clamps of a transport device in a conveying direction. Each two at least partially overlapping products are held by a clamp in a first side edge region.
  • the device is equipped with two sensors, wherein a first sensor is intended to generate a first detection signal called a reference signal when a clamp passes a reference region associated with the first sensor.
  • a second sensor is arranged such that a so-called second detection signal is generated when at least a portion of one of the products of one of the free second side edge region passes through a second detection sensor associated with the second sensor.
  • the second sensor is directed to the free second side edge region, a possible spatial obstruction of the transport means moving the clamps is avoided.
  • the assembly, maintenance and adjustment costs for the second sensor can be reduced in this arrangement.
  • FIG. 1 shows a schematic side view of a section of a transport device 10 in which staples 12, of which only one is shown, are arranged at a distance from one another on a conveying member 14.
  • the conveying member 14 may be formed, for example, as a conveyor chain or a conveyor belt. It is driven in a conveying direction F with a conveying speed v.
  • the clamps 12 it is of course also possible for the clamps 12 to be arranged, for example, on rail-guided carriages, which in particular are also moved gravitationally in sections.
  • the clamps 12 have a clamp mouth 16, which can be opened and closed by mechanical actuation.
  • a respective first printed product 20 leading in the conveying direction F and a trailing second printed product 22 are held together.
  • the printed products 20, 22 are, for example, folded printed products such as newspapers and magazines, but also other single-layer or multi-layered flat products.
  • the printed products 20, 22 lie partially over one another with the formation of overlapping-free edge sections 24.
  • the second printed product 22 trailing in the conveying direction F is closer to the base 26 of the clamping mouth 16
  • the leading in the conveying direction F first printed product 20 is arranged closer to the bottom 26 of the clamp mouth 16 as the trailing in the conveying direction F second printed product 22.
  • Due to the clamping of the two Printed products 20, 22 in the staple mouth 16 is a first side edge portion 28 which extends from the free ends of the staple jaws 18 in the direction of the base 26 of the clamp mouth 16 at the two printed products 20, 22, held firmly.
  • the first side edge region 28 is essentially formed by fold-side sections of the printed products 20, 22.
  • a second side edge region 29 lying opposite the first side edge region 28 comprises the free, to a certain extent also freely movable end regions of the printed products 20, 22 including an overlap-free edge section 24 of the first printed product 20.
  • the first sensor 32 is a so-called “clamp sensor” and monitors an associated reference region 38, which is represented by the dotted line emanating from it. As soon as a clamp 12 passes this reference region 38, the sensor triggers a first detection signal designated as a reference signal.
  • This reference signal is forwarded to an evaluation circuit 39 and serves to trigger a predetermined time interval, in which a so-called second detection signal of the second sensor 34 and a so-called third detection signal of the third sensor 36 are detected.
  • the first sensor 32 can also be arranged upstream of the conveying direction F at a distance from the second sensor 34 and the third sensor 36 that is greater than the distance shown in FIG. 1.
  • the predetermined period of time preferably starts at a delayed time after the passage of the clamp 12 which has been set in response to the distance of the first sensor 32 from the second and third sensors 34, 36 and the conveying speed v.
  • the second sensor 34 is arranged such that its associated detection area 40 is aligned with the second side edge area 29, which is opposite to the clip 12, in particular with the lower overlap-free edge area 24 of the first printed product 20. With such an arrangement of the second sensor 34 below and away from the conveyor member 14, its installation and alignment is very easy and with good accessibility possible.
  • the second detection signal of this sensor 34 is forwarded to the evaluation circuit 39 and the presence of the first printed product 20 is registered. Should the overlap-free edge portion 24 not within the triggered period of time Detection area 40 pass, so no second detection signal is forwarded to the evaluation circuit 39 and the evaluation 39 registers after the completion of the period of absence of the first printed product 20.
  • the evaluation circuit 39 can then forward control signals to downstream processing facilities to a special treatment of not with the first Pressure range product 20 initiated clamp 12 to initiate.
  • the third sensor 36 In order to determine the presence of the second printed product 22 trailing in the conveying direction F, the third sensor 36 is aligned such that its detection region 42 monitors the overlap-free edge portion 24 of the second printed product 22 in the first side edge region 28. Analogously to the mode of operation of the second sensor 34, the third sensor 36 also transmits the third detection signal to the evaluation circuit 39 as soon as the second printed product 22 passes the detection area 42 within the triggered time segment. If there is no detection of the second printed product 22, since, for example, the detection area 42 has not been passed through by the second printed product 22 or the printed products 20, 22 are congruent to one another at the position of the first printed product 20, an error from the evaluation circuit 39 will also result in this case registered and appropriate error handling procedures triggered.
  • FIG. 2 shows a further embodiment of the control device according to the invention.
  • the illustrated section of the transport device 10 to the Control point 30 are two brackets 12, each with a first printed product 20 and a second printed product 22, which are at least partially superimposed to form overlap-free edge portions 24, shown.
  • the first printed product 20 leading in the conveying direction F extends further into the clamping mouth 16 than the trailing second printed product 22.
  • the first sensor 32 detects the passage of a clamp 12 through its reference area 38 and triggers the forwarding of its reference signal to the evaluation circuit 39 a time window in which second detection signals generated by the second sensor 34 can be registered.
  • the second sensor 34 is associated with a ramp-shaped deflection element 44, for example in the form of a support plate.
  • the detection region 40 of the second sensor 34 extends in the direction of the conveying direction F in the shadow of the deflection element 44. As the clips 12 approach the printed products 20, 22, the second side edge region 29 of the printed products 20, 22 slides onto the deflection element 44. When passing a in the conveying direction F rear deflecting edge 46 of the deflector 44 then oscillates the second If the first printed product 20 has been present and held in a correct position in the clip 12, this is detected by the second sensor 34 and sends a corresponding second detection signal to the first sensor Evaluation circuit 39 on.
  • the signal quantity U as a function of the time t when passing the checkpoint 30 of two clamps 12, each having a first printed product 20 and a second printed product 22 for the in FIG 2 shows the embodiment of the control device according to the invention shown.
  • the signal curve has two double peaks spaced apart from each other by a time difference T, wherein the respective earlier smaller signal peak of the passage of the first printed product 20 through the detection area 40 of the second sensor 34 and the respectively later larger signal peak of the passage of the second printed product 22 through the detection area 40 of FIG second sensor 34 is assigned.
  • the time difference T between the respectively earlier and the respective later signal peaks corresponds at least approximately to the quotient of the distance of the clamps 12 and their conveying speed v, provided that the two variables remain constant between the passage of the detection area 40.
  • the time segment W also entered in the diagram designates a time window triggered by the reference signal, in which the second detection signals of the second sensor 34 are expected when the printed products 20, 22 are completely equipped or in which they are detected or taken into account by the evaluation circuit 39.
  • the signal magnitudes of the signal peaks which are respectively assigned to the first printed product 20 and the second printed product 22, differ because of the mutually shifted position of the printed products 20, 22 different sized sections of the detection area 40 of the second sensor 34 through the printed products 20, 22nd to be covered.
  • due to the signal size due to the signal size, a positionally correct mounting of the printed products 20, 22 in the clamps 12 can also be assessed.
  • the sensors 32, 34, 36 are preferably designed as very inexpensive, non-contact, optical sensors, for example optical proximity sensors, light barriers, etc., or as mechanical sensors.
  • optical sensors for example optical proximity sensors, light barriers, etc.
  • mechanical sensors such as digital cameras
  • the first sensor 32 for detecting the clamps 12 may also be designed as a mechanical, capacitive or inductive proximity switch.
  • the reference area 38, as well as the detection areas 40 and 42, are often not line-shaped in practice but depending on the type of sensor used spatially extended.
  • the fact that the reference area 38 or the detection areas 40, 42 also encompass overlapping sections of the printed products 20, 22 during the detection of the passage of overlapping-free edge sections 24 of the printed products 20, 22 does not play a significant role for the control device according to the invention optionally, as already mentioned above, to determine whether the printed products are held in the correct position in the brackets, are used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Discharge By Other Means (AREA)

Abstract

The device has clamps (12) for holding printing plant products (20,22) in a lateral edge area (28), such that the products form overlapping free border section (24). The device has two sensors (32,34). One sensor is designed for generating a specific detection signal as reference signal, if a clamp passes one of the sensors assigned to a reference area (38). The other sensor is arranged such that it generates another detection signal, if a section of a product passes through detection area (40) assigned to the sensor in a lateral edge area (29).

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur Kontrolle von mittels Klammern in einer Transporteinrichtung transportierten flächigen Produkten, insbesondere Druckereiprodukten, gemäss dem Patentanspruch 1.The present invention relates to a device for controlling flat products transported by means of clamps in a transport device, in particular printed products, according to claim 1.

Aus dem Schweizer Patentgesuch mit der Anmeldenummer 01276/05 ist ein Verfahren und eine Vorrichtung zur Kontrolle von jeweils zwei mit Identifikationsinformationen versehenen flächigen Produkten, die jeweils in einer Klammer einer Transporteinrichtung transportiert werden, bekannt. Beim Vorbeibewegen an einer Kontrollstelle werden die Produkte einer opto-elektronischen Kontrolle mit einem Bildaufnahmegerät unterzogen. Die dabei aufgenommenen Bilder der Identifikationsinformationen werden in einer elektronischen Weiterverarbeitungseinrichtung mit vorgegebenen Eichbildern verglichen. Anhand dieses Vergleichs kann festgestellt werden, ob die Klammer mit den vorbestimmten Produkten bestückt war. Im Fehlerfall können Steuersignale an nachgeordnete Verarbeitungseinrichtungen weitergeleitet werden, so dass eine gesonderte Behandlung fehlerhaft bestückter Klammern eingeleitet werden kann.From the Swiss patent application with the application number 01276/05 a method and a device for controlling two each provided with identification information sheet products, which are transported in each case in a bracket of a transport device known. When moving past a control point, the products are subjected to an optoelectronic control with an image recorder. The captured images of the identification information are compared in an electronic processing device with predetermined calibration images. From this comparison, it can be determined whether the clamp was loaded with the predetermined products. In the event of an error, control signals can be forwarded to downstream processing devices, so that a separate handling of faulty populated brackets can be initiated.

Um eine hohe Zuverlässigkeit bei der Aufnahme der Identifikationsinformationen zu gewährleisten, ist es notwendig, dass diese bei der Aufnahme stets in etwa die gleichen Positionen durchlaufen. In der oben genannten Patentanmeldung wird dies dadurch sichergestellt, dass die Identifikationsinformationen jeweils auf Randabschnitten in einem Seitenkantenbereich der Produkte angebracht ist, der von Klammerbacken der Klammer fest übergriffen ist. Da bei der Aufnahme der Identifikationsinformationen das Bildaufnahmegerät in relativer Nähe zu den passierenden Klammern angeordnet sein sollte, können aufgrund eines beschränkten Platzangebotes bei einigen Klammertransporteinrichtungen Platzierungs- bzw. Montageprobleme auftreten.In order to ensure high reliability in the recording of the identification information, it is necessary that they always go through the same positions when recording. In the abovementioned patent application, this is ensured by the fact that the Identification information is mounted on each edge portions in a side edge portion of the products, which is firmly overlapped by staple jaws of the clip. Because the image pickup device should be located in relative proximity to the passing clips when taking the identification information, placement or mounting problems may occur in some staple transport devices due to limited space.

Daher besteht die Aufgabe, eine alternative Kontrolleinrichtung bereitzustellen, die es ermöglicht, die Anzahl von in einer Klammer transportierten flächigen Produkten auf eine möglichst einfache und zuverlässige Weise zu kontrollieren.Therefore, the object is to provide an alternative control device which makes it possible to control the number of sheet-like products transported in a clamp in the simplest and most reliable manner possible.

Diese Aufgabe wird durch eine Vorrichtung gemäss dem Patentanspruch 1 gelöst. Besonders vorteilhafte Ausführungsformen sind mit den in den abhängigen Patentansprüchen genannten Merkmalen ausgestattet.This object is achieved by a device according to claim 1. Particularly advantageous embodiments are equipped with the features mentioned in the dependent claims.

Die erfindungsgemässe Vorrichtung dient der Kontrolle von mittels Klammern einer Transporteinrichtung in einer Förderrichtung transportierten flächigen Produkten. Jeweils zwei sich wenigstens teilweise überlappende Produkte werden von einer Klammer in einem ersten Seitenkantenbereich festgehalten. Die Vorrichtung ist mit zwei Sensoren ausgestattet, wobei ein erster Sensor dazu bestimmt ist, eine als Referenzsignal bezeichnetes erstes Detektionssignal zu erzeugen, wenn eine Klammer einen dem ersten Sensor zugeordneten Referenzbereich passiert. Ein zweiter Sensor ist derart angeordnet, dass dann ein so genanntes zweites Detektionssignal erzeugt wird, wenn wenigstens ein Abschnitt eines der Produkte aus einem von den Klammern freien zweiten Seitenkantenbereich einen dem zweiten Sensor zugeordneten Detektionsbereich durchläuft.The device according to the invention serves for the control of flat products transported by means of clamps of a transport device in a conveying direction. Each two at least partially overlapping products are held by a clamp in a first side edge region. The device is equipped with two sensors, wherein a first sensor is intended to generate a first detection signal called a reference signal when a clamp passes a reference region associated with the first sensor. A second sensor is arranged such that a so-called second detection signal is generated when at least a portion of one of the products of one of the free second side edge region passes through a second detection sensor associated with the second sensor.

Durch die Anordnung, bei welcher der zweite Sensor auf den freien zweiten Seitenkantenbereich gerichtet ist, wird eine mögliche räumliche Behinderung der die Klammern bewegenden Transporteinrichtung vermieden. Zudem kann der Montage-, Wartungs- und Justageaufwand für den zweiten Sensor bei dieser Anordnung verringert werden.By the arrangement in which the second sensor is directed to the free second side edge region, a possible spatial obstruction of the transport means moving the clamps is avoided. In addition, the assembly, maintenance and adjustment costs for the second sensor can be reduced in this arrangement.

Zudem ist es gegenüber dem Stand der Technik möglich, auf Identifikationsinformationen an den Produkten zu verzichten und anstelle von Bildaufnahmegeräten besonders kostengünstige Sensoren, beispielsweise einzellige Photodetektoren, einzusetzen.In addition, it is possible over the prior art to dispense with identification information on the products and instead of imaging devices particularly inexpensive sensors, such as single-cell photodetectors to use.

Die Erfindung wird nun anhand der nachfolgend detailliert beschriebenen Zeichnung für zwei besonders bevorzugte Ausführungsbeispiele näher erläutert. Die Figuren der Zeichnungen zeigen im Einzelnen rein schematisch:

Fig. 1
in Seitenansicht eine erste Ausführungsform einer erfindungsgemässen Kontrolleinrichtung, die mit drei Sensoren ausgestattet ist;
Fig. 2
in Seitenansicht eine weitere Ausführungsform der erfindungsgemässen Kontrollvorrichtung mit zwei Sensoren, wobei der zweite Sensor in Förderrichtung einem Ablenkelement nachgeordnet ist; und
Fig. 3
in einem Diagramm ein Detektionssignal des zweiten Sensors in Abhängigkeit von der Signalgrösse U und der Zeit t für die in Fig. 2 gezeigte Ausführungsform beim Passieren des dem zweiten Sensor zugeordneten Detektionsbereichs von zwei vollständig bestückten Klammern mit je zwei flächigen Produkten.
The invention will now be explained in more detail with reference to the drawing described in detail below for two particularly preferred embodiments. The figures of the drawings show in detail purely schematically:
Fig. 1
in side view a first embodiment of an inventive control device, which is equipped with three sensors;
Fig. 2
in side view, another embodiment of the inventive control device with two sensors, wherein the second sensor is arranged downstream of a deflection in the conveying direction; and
Fig. 3
in a diagram, a detection signal of the second sensor as a function of the signal magnitude U and the time t for the embodiment shown in Fig. 2 when passing the the second sensor associated detection range of two fully populated brackets, each with two flat products.

Fig. 1 zeigt in einer Seitenansicht schematisch einen Abschnitt einer Transporteinrichtung 10, bei welcher Klammern 12, von denen lediglich eine gezeigt ist, hintereinander beabstandet an einem Förderorgan 14 angeordnet sind. Das Förderorgan 14 kann beispielsweise als eine Förderkette oder ein Förderband ausgebildet sein. Es ist in einer Förderrichtung F mit einer Fördergeschwindigkeit v angetrieben. Alternativ ist es natürlich auch möglich, dass die Klammern 12 beispielsweise an schienengeführten Wagen, die insbesondere auch abschnittsweise schwerkraftunterstützt bewegt werden, angeordnet sind.1 shows a schematic side view of a section of a transport device 10 in which staples 12, of which only one is shown, are arranged at a distance from one another on a conveying member 14. The conveying member 14 may be formed, for example, as a conveyor chain or a conveyor belt. It is driven in a conveying direction F with a conveying speed v. Alternatively, it is of course also possible for the clamps 12 to be arranged, for example, on rail-guided carriages, which in particular are also moved gravitationally in sections.

Die Klammern 12 weisen ein Klammermaul 16 auf, welches durch mechanische Betätigung geöffnet und geschlossen werden kann. Im Klammermaul 16 zwischen zwei Klammerbacken 18 werden gemeinsam jeweils ein in Förderrichtung F vorlaufendes erstes Druckereiprodukt 20 und ein nachlaufendes zweites Druckereiprodukt 22 gehalten. Bei den Druckereiprodukten 20, 22 handelt es sich beispielsweise um gefaltete Druckereiprodukte wie Zeitungen und Zeitschriften aber auch andere ein- oder mehrlagige flächige Produkte.The clamps 12 have a clamp mouth 16, which can be opened and closed by mechanical actuation. In the clamp mouth 16 between two clamp jaws 18, a respective first printed product 20 leading in the conveying direction F and a trailing second printed product 22 are held together. The printed products 20, 22 are, for example, folded printed products such as newspapers and magazines, but also other single-layer or multi-layered flat products.

Die Druckereiprodukte 20, 22 liegen unter Bildung überlappungsfreier Randabschnitte 24 teilweise übereinander. Bei der in Fig. 1 gezeigten Ausführungsform ist dabei das in der Förderrichtung F nachlaufende zweite Druckereiprodukt 22 näher am Grund 26 des Klammermauls 16 angeordnet als das in Förderrichtung F vorlaufende erste Druckereiprodukt 20. Alternativ ist es auch möglich, dass das in Förderrichtung F vorlaufende erste Druckereiprodukt 20 näher am Grund 26 des Klammermauls 16 angeordnet ist als das in Förderrichtung F nachlaufende zweite Druckereiprodukt 22. Aufgrund der Klemmung der beiden Druckereiprodukte 20, 22 im Klammermaul 16 ist ein erster Seitenkantenbereich 28, der sich von den freien Enden der Klammerbacken 18 in Richtung zum Grund 26 des Klammermauls 16 an den beiden Druckereiprodukten 20, 22 erstreckt, fest gehalten. Bei der gezeigten Ausführungsform wird der erste Seitenkantenbereich 28 im Wesentlichen durch falzseitige Abschnitte der Druckereiprodukte 20, 22 gebildet.The printed products 20, 22 lie partially over one another with the formation of overlapping-free edge sections 24. In the embodiment shown in FIG. 1, the second printed product 22 trailing in the conveying direction F is closer to the base 26 of the clamping mouth 16 Alternatively, it is also possible that the leading in the conveying direction F first printed product 20 is arranged closer to the bottom 26 of the clamp mouth 16 as the trailing in the conveying direction F second printed product 22. Due to the clamping of the two Printed products 20, 22 in the staple mouth 16 is a first side edge portion 28 which extends from the free ends of the staple jaws 18 in the direction of the base 26 of the clamp mouth 16 at the two printed products 20, 22, held firmly. In the embodiment shown, the first side edge region 28 is essentially formed by fold-side sections of the printed products 20, 22.

Ein dem ersten Seitenkantenbereich 28 gegenüberliegender zweiter Seitenkantenbereich 29 umfasst die freien, in einem gewissen Masse auch frei beweglichen Endbereiche der Druckereiprodukte 20, 22 einschliesslich eines überlappungsfreien Randabschnitts 24 des ersten Druckereiproduktes 20.A second side edge region 29 lying opposite the first side edge region 28 comprises the free, to a certain extent also freely movable end regions of the printed products 20, 22 including an overlap-free edge section 24 of the first printed product 20.

An einer Kontrollstelle 30 sind drei stationäre Sensoren, namentlich ein erster Sensor 32, ein zweiter Sensor 34 und ein dritter Sensor 36 angeordnet. Der erste Sensor 32 ist ein sogenannter "Klammersensor" und überwacht einen zugeordneten Referenzbereich 38, der durch die von ihm ausgehende strichpunktierte Linie dargestellt ist. Sobald eine Klammer 12 diesen Referenzbereich 38 passiert, löst der Sensor ein als Referenzsignal bezeichnetes erstes Detektionssignal aus. Dieses Referenzsignal wird an eine Auswerteschaltung 39 weitergeleitet und dient der Triggerung eines vorbestimmten Zeitabschnitts, in dem ein so genanntes zweites Detektionssignal des zweiten Sensors 34 und ein so genanntes drittes Detektionssignal des dritten Sensors 36 erfasst werden.At a control point 30, three stationary sensors, namely a first sensor 32, a second sensor 34 and a third sensor 36 are arranged. The first sensor 32 is a so-called "clamp sensor" and monitors an associated reference region 38, which is represented by the dotted line emanating from it. As soon as a clamp 12 passes this reference region 38, the sensor triggers a first detection signal designated as a reference signal. This reference signal is forwarded to an evaluation circuit 39 and serves to trigger a predetermined time interval, in which a so-called second detection signal of the second sensor 34 and a so-called third detection signal of the third sensor 36 are detected.

Natürlich kann dabei der erste Sensor 32 auch in einer grösseren als der in Fig. 1 gezeigten Entfernung vom zweiten Sensor 34 und dritten Sensor 36 stromaufwärts bezüglich der Förderrichtung F angeordnet sein. In diesem Fall beginnt der vorbestimmte Zeitabschnitt vorzugsweise zu einem verzögerten Zeitpunkt nach der Passage der Klammer 12, der in Abhängigkeit von der Entfernung des ersten Sensors 32 vom zweiten bzw. dritten Sensor 34, 36 und der Fördergeschwindigkeit v festgelegt worden ist.Of course, in this case, the first sensor 32 can also be arranged upstream of the conveying direction F at a distance from the second sensor 34 and the third sensor 36 that is greater than the distance shown in FIG. 1. In this case, the predetermined period of time preferably starts at a delayed time after the passage of the clamp 12 which has been set in response to the distance of the first sensor 32 from the second and third sensors 34, 36 and the conveying speed v.

Der zweite Sensor 34 ist derart angeordnet, dass sein zugeordneter Detektionsbereich 40 auf den zweiten Seitenkantenbereich 29, welcher der Klammer 12 gegenüberliegt, insbesondere auf den unteren überlappungsfreien Randabschnitt 24 des ersten Druckereiprodukts 20, ausgerichtet ist. Bei einer derartigen Anordnung des zweiten Sensors 34 unterhalb und entfernt vom Förderorgan 14, ist seine Montage und Ausrichtung sehr einfach und mit guter Zugänglichkeit möglich.The second sensor 34 is arranged such that its associated detection area 40 is aligned with the second side edge area 29, which is opposite to the clip 12, in particular with the lower overlap-free edge area 24 of the first printed product 20. With such an arrangement of the second sensor 34 below and away from the conveyor member 14, its installation and alignment is very easy and with good accessibility possible.

Durchläuft innerhalb eines vom Referenzsignal des ersten Sensors 32 getriggerten Zeitabschnitts der überlappungsfreie Randabschnitt 24 des ersten Druckereiprodukts den Detektionsbereich 40 des zweiten Sensors 34, so wird an die Auswerteschaltung 39 das zweite Detektionssignal dieses Sensors 34 weitergeleitet und das Vorhandensein des ersten Druckereiprodukts 20 registriert. Sollte der überlappungsfreie Randabschnitt 24 nicht innerhalb des getriggerten Zeitabschnitts den Detektionsbereich 40 passieren, so wird kein zweites Detektionssignal an die Auswerteschaltung 39 weitergeleitet und die Auswerteschaltung 39 registriert nach Beendigung des Zeitabschnitts das Nichtvorhandensein des ersten Druckereiprodukts 20. Die Auswerteschaltung 39 kann daraufhin Steuersignale an nachfolgende Verarbeitungseinrichtungen weiterleiten, um eine besondere Behandlung der nicht mit dem ersten Druckereichprodukt 20 bestückten Klammer 12 zu initiieren.If, within a time section triggered by the reference signal of the first sensor 32, the overlap-free edge section 24 of the first printed product passes through the detection section 40 of the second sensor 34, the second detection signal of this sensor 34 is forwarded to the evaluation circuit 39 and the presence of the first printed product 20 is registered. Should the overlap-free edge portion 24 not within the triggered period of time Detection area 40 pass, so no second detection signal is forwarded to the evaluation circuit 39 and the evaluation 39 registers after the completion of the period of absence of the first printed product 20. The evaluation circuit 39 can then forward control signals to downstream processing facilities to a special treatment of not with the first Pressure range product 20 initiated clamp 12 to initiate.

Um das Vorhandensein des zweiten in Förderrichtung F nachlaufenden Druckereiprodukts 22 festzustellen, ist der dritte Sensor 36 derart ausgerichtet, dass sein Detektionsbereich 42 den überlappungsfreien Randabschnitt 24 des zweiten Druckereiprodukts 22 im ersten Seitenkantenbereich 28 überwacht. In Analogie zur Funktionsweise des zweiten Sensors 34 übermittelt auch der dritte Sensor 36 das dritte Detektionssignal an die Auswerteschaltung 39, sobald innerhalb des getriggerten Zeitabschnitts das zweite Druckereiprodukt 22 den Detektionsbereich 42 passiert. Erfolgt keine Detektion des zweiten Druckereiprodukts 22, da beispielsweise der Detektionsbereich 42 nicht vom zweiten Druckereiprodukt 22 durchlaufen worden ist oder die Druckereiprodukte 20, 22 deckungsgleich an der Position des ersten Druckereiprodukts 20 übereinander liegen, so wird auch in diesem Fall ein Fehler von der Auswerteschaltung 39 registriert und entsprechende Fehlerbehandlungsprozeduren ausgelöst.In order to determine the presence of the second printed product 22 trailing in the conveying direction F, the third sensor 36 is aligned such that its detection region 42 monitors the overlap-free edge portion 24 of the second printed product 22 in the first side edge region 28. Analogously to the mode of operation of the second sensor 34, the third sensor 36 also transmits the third detection signal to the evaluation circuit 39 as soon as the second printed product 22 passes the detection area 42 within the triggered time segment. If there is no detection of the second printed product 22, since, for example, the detection area 42 has not been passed through by the second printed product 22 or the printed products 20, 22 are congruent to one another at the position of the first printed product 20, an error from the evaluation circuit 39 will also result in this case registered and appropriate error handling procedures triggered.

In Fig. 2 ist eine weitere Ausführungsform der erfindungsgemässen Kontrollvorrichtung dargestellt. Im gezeigten Abschnitt der Transporteinrichtung 10 um die Kontrollstelle 30 sind zwei Klammern 12 mit jeweils einem ersten Druckereiprodukt 20 und einem zweiten Druckereiprodukt 22, die wenigstens teilweise unter Bildung überlappungsfreier Randabschnitte 24 übereinander liegen, dargestellt. Im Gegensatz zur in Fig. 1 gezeigten Ausführungsform, bei welcher entweder das nachlaufende Druckereiprodukt 22 oder das vorlaufende Druckereiprodukt 20 näher dem Grund 26 des Klammermauls 16 angeordnet sein kann, ohne dass die Funktionsweise der Kontrollvorrichtung beeinträchtigt wird, ist es bei der in Fig. 2 gezeigten Ausführungsform zwingend erforderlich, dass das in Förderrichtung F vorlaufende erste Druckereiprodukt 20 weiter in das Klammermaul 16 hineinreicht als das nachlaufende zweite Druckereiprodukt 22.FIG. 2 shows a further embodiment of the control device according to the invention. In the illustrated section of the transport device 10 to the Control point 30 are two brackets 12, each with a first printed product 20 and a second printed product 22, which are at least partially superimposed to form overlap-free edge portions 24, shown. In contrast to the embodiment shown in FIG. 1, in which either the trailing printed product 22 or the leading printed product 20 can be arranged closer to the base 26 of the staple mouth 16 without impairing the functioning of the control device, it is in the case of FIG It is imperative that the first printed product 20 leading in the conveying direction F extends further into the clamping mouth 16 than the trailing second printed product 22.

Auch bei dieser Ausführungsform detektiert der erste Sensor 32 die Passage einer Klammer 12 durch seinen Referenzbereich 38 und triggert mit der Weiterleitung seines Referenzsignals an die Auswerteschaltung 39 ein Zeitfenster, in welchem vom zweiten Sensor 34 erzeugte zweite Detektionssignale registrierbar sind. Der zweite Sensor 34 ist bei dieser Ausführungsform einem rampenförmigen Ablenkelement 44, beispielsweise in Form eines Stützblechs, zugeordnet.Also in this embodiment, the first sensor 32 detects the passage of a clamp 12 through its reference area 38 and triggers the forwarding of its reference signal to the evaluation circuit 39 a time window in which second detection signals generated by the second sensor 34 can be registered. In this embodiment, the second sensor 34 is associated with a ramp-shaped deflection element 44, for example in the form of a support plate.

Der Detektionsbereich 40 des zweiten Sensors 34 erstreckt sich in Förderrichtung F betrachtet im Schatten des Ablenkelements 44. Beim Annähern der Klammern 12 mit den Druckereiprodukten 20, 22 gleitet der zweite Seitenkantenbereich 29 der Druckereiprodukte 20, 22 auf das Ablenkelement 44 auf. Beim Passieren einer in Förderichtung F hinteren Ablenkelementkante 46 des Ablenkelements 44 schwingt dann der dem zweiten Seitenkantenbereich 29 zugeordnete Abschnitt des ersten Druckereiprodukts 20 durch den Detektionsbereich 40 des zweiten Sensors 34. Falls das erste Druckereiprodukt 20 vorhanden und in einer richtigen Lage in der Klammer 12 gehalten worden ist, detektiert dies der zweite Sensor 34 und leitet ein entsprechendes zweites Detektionssignal an die Auswerteschaltung 39 weiter.The detection region 40 of the second sensor 34 extends in the direction of the conveying direction F in the shadow of the deflection element 44. As the clips 12 approach the printed products 20, 22, the second side edge region 29 of the printed products 20, 22 slides onto the deflection element 44. When passing a in the conveying direction F rear deflecting edge 46 of the deflector 44 then oscillates the second If the first printed product 20 has been present and held in a correct position in the clip 12, this is detected by the second sensor 34 and sends a corresponding second detection signal to the first sensor Evaluation circuit 39 on.

Das beim Durchlaufen des ersten Druckereiprodukts 20 durch den Detektionsbereich 40 des zweiten Sensors 34 zunächst noch auf dem erhöhten Ablenkelement 44 gleitende zweite Druckereiprodukt 22 schwingt nach dem Übergleiten der Ablenkkate 46 ebenfalls durch den Detektionsbereich 40 des zweiten Sensors 34 und löst dabei auch ein zweites Detektionssignal zur Weitergabe an die Auswerteschaltung 39 aus. Werden von der Auswerteschaltung 39 innerhalb des getriggerten Zeitabschnitts nicht die beiden zugehörigen, zeitlich versetzten zweiten Detektionssignale des zweiten Sensors 34 registriert, etwa weil nur ein Druckereiprodukt 20, 22 in der Klammer 12 vorhanden war oder die Druckereiprodukte 20, 22 deckungsgleich übereinander liegen, so wird wiederum ein Fehlerzustand festgestellt und entsprechende Fehlerbehandlungsprozeduren eingeleitet.The second printed product 22, which still first slides on the raised deflecting element 44 when passing through the first printed product 20 through the detection zone 40 of the second sensor 34, likewise swings through the detection zone 40 of the second sensor 34 after gliding over the deflecting cascade 46, thereby also triggering a second detection signal Transfer to the evaluation circuit 39 off. If the two associated time-shifted second detection signals of the second sensor 34 are not registered by the evaluation circuit 39 within the triggered time segment, for example because only one printed product 20, 22 was present in the clamp 12 or the printed products 20, 22 are congruent to one another, then again detected an error condition and initiated appropriate error handling procedures.

Bei beiden beschriebenen Ausführungsformen der erfindungsgemässen Kontrollvorrichtung kann ermittelt werden, ob gar kein Druckereiprodukt, ob nur eins oder ob beide Druckereiprodukte 20, 22 in einer an der Kontrollstelle 30 vorbeitransportierten Klammer 12 vorhanden waren. Sollte nur ein Druckereiprodukt 20, 22 vorhanden gewesen sein, so ist bei der Ausführungsform gemäss Fig. 1 aufgrund der Zuordnung der Detektionssignale zu einem der Sensoren 34, 36 und bei der Ausführungsform gemäss Fig. 2 aufgrund des Zeitpunktes der Detektion auch zu bestimmen, welches Druckereiprodukt 20, 22 fehlt bzw. welches vorhanden war.In both described embodiments of the control device according to the invention, it can be determined whether no printed product, whether only one or both printed products 20, 22, were present in a clamp 12 transported past the checkpoint 30. If only one printed product 20, 22 were present, then in the embodiment according to FIG. 1, due to the assignment of the detection signals to one of the sensors 34, 36 and in the embodiment According to FIG. 2, it is also to be determined on the basis of the time of the detection which printed product 20, 22 is missing or which was present.

In dem in Fig. 3 gezeigten Diagramm ist für die zweiten Detektionssignale des zweiten Sensors 34 die Signalgrösse U in Abhängigkeit von der Zeit t beim Passieren der Kontrollstelle 30 von zwei Klammern 12 mit jeweils einem ersten Druckereiprodukt 20 und einem zweiten Druckereiprodukt 22 für die in Fig. 2 gezeigte Ausführungsform der erfindungsgemässen Kontrollvorrichtung dargestellt. Der Signalverlauf weist zwei um eine Zeitdifferenz T voneinander beabstandete Doppelspitzen auf, wobei die jeweils frühere kleinere Signalspitze der Passage des ersten Druckereiprodukts 20 durch den Detektionsbereich 40 des zweiten Sensors 34 und die jeweils spätere grössere Signalspitze der Passage des zweiten Druckereiprodukts 22 durch den Detektionsbereich 40 des zweiten Sensors 34 zuzuordnen ist.In the diagram shown in FIG. 3, for the second detection signals of the second sensor 34, the signal quantity U as a function of the time t when passing the checkpoint 30 of two clamps 12, each having a first printed product 20 and a second printed product 22 for the in FIG 2 shows the embodiment of the control device according to the invention shown. The signal curve has two double peaks spaced apart from each other by a time difference T, wherein the respective earlier smaller signal peak of the passage of the first printed product 20 through the detection area 40 of the second sensor 34 and the respectively later larger signal peak of the passage of the second printed product 22 through the detection area 40 of FIG second sensor 34 is assigned.

Die Zeitdifferenz T zwischen den jeweils früheren bzw. den jeweils späteren Signalspitzen entspricht wenigstens näherungsweise dem Quotienten aus dem Abstand der Klammern 12 und ihrer Fördergeschwindigkeit v, sofern die beiden Grössen zwischen dem Passieren des Detektionsbereiches 40 konstant bleiben. Der ebenfalls im Diagramm eingetragene Zeitabschnitt W bezeichnet ein durch das Referenzsignal getriggerte Zeitfenster, in welchem die zweiten Detektionssignale des zweiten Sensors 34 bei einer vollständigen Bestückung mit Druckereiprodukten 20, 22 erwartet bzw. in welchem sie von der Auswerteschaltung 39 erfasst oder berücksichtigt werden.The time difference T between the respectively earlier and the respective later signal peaks corresponds at least approximately to the quotient of the distance of the clamps 12 and their conveying speed v, provided that the two variables remain constant between the passage of the detection area 40. The time segment W also entered in the diagram designates a time window triggered by the reference signal, in which the second detection signals of the second sensor 34 are expected when the printed products 20, 22 are completely equipped or in which they are detected or taken into account by the evaluation circuit 39.

Die Signalgrössen der Signalspitzen, die jeweils dem ersten Druckereiprodukt 20 und dem zweiten Druckereiprodukt 22 zugeordnet sind, unterscheiden sich, da aufgrund der gegeneinander verschobenen Lage der Druckereiprodukte 20, 22 jeweils verschieden grosse Abschnitte des Detektionsbereichs 40 des zweiten Sensors 34 durch die Druckereiprodukte 20, 22 verdeckt werden. Anders herum lässt sich auch aufgrund der Signalgrösse eine lagerichtige Halterung der Druckereiprodukte 20, 22 in den Klammern 12 beurteilen.The signal magnitudes of the signal peaks, which are respectively assigned to the first printed product 20 and the second printed product 22, differ because of the mutually shifted position of the printed products 20, 22 different sized sections of the detection area 40 of the second sensor 34 through the printed products 20, 22nd to be covered. On the other hand, due to the signal size, a positionally correct mounting of the printed products 20, 22 in the clamps 12 can also be assessed.

Die Sensoren 32, 34, 36 sind vorzugsweise als sehr preiswerte, berührungsfreie, optische Sensoren, beispielsweise optische Näherungssensoren, Lichtschranken usw. oder als mechanische Sensoren ausgeführt. Aber auch der Einsatz von Bildaufnahmegeräten, wie digitalen Kameras, mit einer nach der Klammerpassage getriggerten Auslösung oder einer kontinuierlichen Aufnahme während eines getriggerten Zeitabschnitts, als Sensoren 32, 34, 36 ist möglich. Insbesondere der erste Sensor 32 zur Detektion der Klammern 12 kann jedoch auch als ein mechanischer, kapazitiver oder induktiver Näherungsschalter ausgeführt sein.The sensors 32, 34, 36 are preferably designed as very inexpensive, non-contact, optical sensors, for example optical proximity sensors, light barriers, etc., or as mechanical sensors. However, the use of imaging devices, such as digital cameras, with a triggered after the staple passage triggering or a continuous recording during a triggered period of time, as sensors 32, 34, 36 is possible. In particular, however, the first sensor 32 for detecting the clamps 12 may also be designed as a mechanical, capacitive or inductive proximity switch.

Der Referenzbereich 38, wie auch die Detektionsbereiche 40 und 42, sind in der Praxis häufig nicht strichförmig sondern je nach verwendetem Sensortyp räumlich ausgedehnt. Dass der Referenzbereich 38 bzw. die Detektionsbereiche 40, 42 bei der Detektion der Passage überlappungsfreier Randabschnitte 24 der Druckereiprodukte 20, 22 auch überlappende Abschnitte der Druckereiprodukte 20, 22 miterfassen, spielt für die erfindungsgemässe Kontrollvorrichtung keine wesentliche Rolle, sondern kann gegebenenfalls, wie oben bereits erwähnt, zur Bestimmung, ob die Druckereiprodukte lagerichtig in den Klammern gehalten sind, herangezogen werden.The reference area 38, as well as the detection areas 40 and 42, are often not line-shaped in practice but depending on the type of sensor used spatially extended. The fact that the reference area 38 or the detection areas 40, 42 also encompass overlapping sections of the printed products 20, 22 during the detection of the passage of overlapping-free edge sections 24 of the printed products 20, 22 does not play a significant role for the control device according to the invention optionally, as already mentioned above, to determine whether the printed products are held in the correct position in the brackets, are used.

Claims (6)

Vorrichtung zur Kontrolle von mittels Klammern (12) einer Transporteinrichtung (10) in einer Förderrichtung (F) transportierten flächigen Produkten (20, 22), insbesondere Druckereiprodukten (20, 22), wobei die Klammern (12) jeweils dazu bestimmt sind, ein erstes Produkt (20) und ein zweites Produkt (22) gleichzeitig in einem ersten Seitenkantenbereich (28) derart zu halten, dass die Produkte (20, 22) einander teilweise überlappen und dabei überlappungsfreie Randabschnitte (24) bilden, die Vorrichtung mit wenigstens zwei Sensoren (32, 34), namentlich einem ersten Sensor (32) und einem zweiten Sensor (34), ausgestattet ist, die dazu bestimmt sind, Signale zu erzeugen, aufgrund derer die Anzahl der in der Klammer (12) gehaltenen Produkte (20, 22) bestimmbar ist, und wobei der erste Sensor (32) dazu bestimmt ist, ein als Referenzsignal bezeichnetes erstes Detektionssignal zu erzeugen, wenn eine Klammer (12) einen dem ersten Sensor (32) zugeordneten Referenzbereich (38) passiert und der zweite Sensor (34) derart angeordnet ist, dass er ein zweites Detektionssignal erzeugt, wenn wenigstens ein Abschnitt eines der Produkte (20, 22) in einem von der Klammer (12) freien zweiten Seitenkantenbereich (29) einen dem zweiten Sensor (34) zugeordneten Detektionsbereich (40) passiert.Device for controlling sheet-like products (20, 22), in particular printed products (20, 22), transported by means of clamps (12) of a transport device (10) in a conveying direction (F), wherein the clamps (12) are each intended to be a first one Product (20) and a second product (22) at the same time in a first side edge region (28) such that the products (20, 22) partially overlap each other and thereby form overlap-free edge portions (24), the device having at least two sensors (28). 32, 34), in particular a first sensor (32) and a second sensor (34), which are intended to generate signals, on the basis of which the number of products (20, 22) held in the clamp (12) is determinable, and wherein the first sensor (32) is intended to generate a reference signal referred to as a first detection signal when a clip (12) passes a first sensor (32) associated reference region (38) and the second sensor (34) is arranged such that it generates a second detection signal when at least a portion of one of the products (20, 22) in a second side edge region (29) free of the clamp (12) has a second sensor (34) associated therewith Detection area (40) happens. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass dem zweiten Sensor (34) ein Ablenkelement (44) zugeordnet ist, durch welches die Produkte (20, 22) im freien zweiten Seitenkantenbereich (29) beim Überstreichen des Ablenkelements (44) voneinander entfernt werden und einzeln nacheinander den Detektionsbereich (40) des zweiten Sensors (34) passieren, so dass vom zweiten Sensor (34) zweite Detektionssignale erzeugt werden.Apparatus according to claim 1, characterized in that the second sensor (34) is associated with a deflection element (44) through which the products (20, 22) in the free second side edge region (29) when sweeping the deflection element (44) away from each other and successively pass through the detection area (40) of the second sensor (34), so that second detection signals are generated by the second sensor (34). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der zweite Sensor (34) und ein dritter Sensor (36) derart angeordnet sind, dass bei der Passage der Produkte (20, 22) der Detektionsbereich (40) des zweiten Sensors (34) wenigstens nahezu ausschliesslich einen überlappungsfreien Randabschnitt (24) des ersten Produktes (20) und ein Detektionsbereich (42) des dritten Sensors (36) wenigstens nahezu ausschliesslich einen überlappungsfreien Randabschnitt (24) des zweiten Produktes (22) oder umgekehrt erfasst, so dass vom zweiten Sensor (34) das zweite Detektionssignal in Abhängigkeit vom Vorhandensein des ersten Produktes (20) und vom dritten Sensor (36) ein drittes Detektionssignal in Abhängigkeit vom Vorhandensein des zweiten Produktes (22) bzw. umgekehrt erzeugt wird.Apparatus according to claim 1, characterized in that the second sensor (34) and a third sensor (36) are arranged such that at the passage of the products (20, 22) of the detection region (40) of the second sensor (34) at least almost exclusively an overlap-free edge section (24) of the first product (20) and a detection section (42) of the third sensor (36) at least almost exclusively an overlap-free edge section (24) of the second product (22) or vice versa detected, so that the second sensor ( 34), the second detection signal is generated as a function of the presence of the first product (20) and the third sensor (36), a third detection signal in response to the presence of the second product (22) or vice versa. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Sensoren (32, 34, 36) elektrisch mit einer Auswerteschaltung (39) verbunden sind, welche aufgrund der zeitlichen Abfolge und / oder der Grösse der Detektionssignale die Anzahl der Produkte (20, 22) bestimmt bzw. eine vollständige Bestückung der Klammern (12) mit Produkten (20, 22) kontrolliert.Apparatus according to claim 2 or 3, characterized in that the sensors (32, 34, 36) are electrically connected to an evaluation circuit (39), which due to the time sequence and / or the size of the detection signals, the number of products (20, 22 ) or controls a complete assembly of the clamps (12) with products (20, 22). Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Auswerteschaltung (39) die Detektionssignale des zweiten Sensor (34) und gegebenenfalls weiterer Sensoren (36) nur während eines vorbestimmten Zeitabschnitts, der durch das vom ersten Sensor (32) erzeugte Referenzsignal getriggert wird, erfasst.Apparatus according to claim 4, characterized in that the evaluation circuit (39) detects the detection signals of the second sensor (34) and optionally further sensors (36) only during a predetermined period of time, which is triggered by the reference signal generated by the first sensor (32) , Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ein Sensor (32, 34, 36) als ein optischer Sensor, insbesondere als ein optischer Näherungssensor, eine Lichtschranke oder ein Bildaufnahmegerät, ein mechanischer Sensor, insbesondere als ein mechanischer Näherungsschalter, ein kapazitiver oder als ein induktiver Sensor ausgebildet ist.Device according to one of claims 1 to 5, characterized in that a sensor (32, 34, 36) as an optical sensor, in particular as an optical proximity sensor, a light barrier or an image pickup device, a mechanical sensor, in particular as a mechanical proximity switch, a capacitive or is designed as an inductive sensor.
EP07002590A 2006-05-10 2007-02-07 Device for controlling plane products held together in a clamp Not-in-force EP1854751B1 (en)

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