EP0847874A1 - Method of monitoring glue application onto the back of a book block, which is bound using glue and processed in a book binding machine as well as the device for carrying out the process - Google Patents

Method of monitoring glue application onto the back of a book block, which is bound using glue and processed in a book binding machine as well as the device for carrying out the process Download PDF

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Publication number
EP0847874A1
EP0847874A1 EP97810952A EP97810952A EP0847874A1 EP 0847874 A1 EP0847874 A1 EP 0847874A1 EP 97810952 A EP97810952 A EP 97810952A EP 97810952 A EP97810952 A EP 97810952A EP 0847874 A1 EP0847874 A1 EP 0847874A1
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EP
European Patent Office
Prior art keywords
glue
book block
glue application
transmitter
measuring
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Granted
Application number
EP97810952A
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German (de)
French (fr)
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EP0847874B1 (en
Inventor
Thomas Wehrle
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Grapha Holding AG
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Grapha Holding AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C9/00—Applying glue or adhesive peculiar to bookbinding

Definitions

  • the invention relates to a method for monitoring the glue application on a back one in a bookbinding machine edited and bound by book block Measure the glue application thickness.
  • the invention is based on the object of a method create with which a simpler and more reliable monitoring of the glue application is possible.
  • the book blocks are guided past a transmitter and a receiver assigned to it, which cooperate as a measuring transducer and form a measuring area across the conveying path of a book block in the bookbinding machine, in such a way that at least the layer of glue applied to the back of the book block covers the measuring area partially enforced.
  • the transmission range of the measuring range covered or not covered by the book block spine or the glue layer can be fed back to a sensor and evaluated. The covered measuring resp. The transmission range depends on the thickness of the glue.
  • the device according to the invention permits automatic and continuous monitoring of the glue application, so that deviations, for example tolerance deviations, non-glued areas or inclusions can also be determined. Since the transmitter and receiver are arranged to the side of the conveying path of the book blocks, contamination of the device can be excluded. An extension of the funding path is not necessary because of the device, because the transmitter and receiver can be accommodated without any problems.
  • the effective glue thickness can be measured particularly precisely if, according to a further development of the invention, the transmitter and the receiver are arranged after the glue application and a second transmitter and receiver before the glue application.
  • One measurement takes place with the book block not yet glued and the second with the book block glued.
  • both measuring arrangements are Transducers installed under the same mechanical and electrical conditions, so that equivalent electrical signals are available that can be compared.
  • the difference between the two measurement signals can be used to measure the effective glue layer or glue thickness.
  • the bar-shaped transmission window can preferably by an im Cross-section beam-shaped fiber optic cable to be formed corresponding to the inclination, a high fiber density across the conveying direction having.
  • the bookbinding machine 2 partially shown in FIG. 1 has a stationary one and only hinted at here Machine frame 2a, in which on guide rails 16 in a Row of pliers 11 in a row in the direction of arrow 10 are movable. With the pliers 11 book blocks 1 are successively fed to the various processing areas. Out the loosely gathered into book blocks 1 for the time being 2 bound printed products are in the bookbinding machine produced. In the processing step shown in Figure 1 is on the trimmed book spine 4 of the book block 1 a layer of glue 12 applied, which hold the book block 1 together should.
  • measuring device for monitoring the glue application provided, the two sensors arranged at a distance from each other or measuring arrangements 8 and 9.
  • the measurement arrangement 8 is seen in the transport direction 10 before the glue pool 14 and the other measuring arrangement 9 after the Glue pool 14. Both measuring arrangements 8 and 9 are preferred equally trained and work on the same principle.
  • the measuring arrangement 8 shown in FIG. 2 thus also corresponds of the measuring arrangement 9.
  • the measuring arrangement 8 has a transmitter 3 and a receiver 5, between which there is an air gap 24 is located, which extends transversely to the transport direction 10.
  • the light is e.g. Infrared light one Light source 20 into a fiber optic cable 19 or other suitable Transmission medium coupled.
  • the one emitted by transmitter 3 Light is received by a receiver 5 and with a fiber optic cable 18 to a light-sensitive sensor element 26 fed back.
  • the two fiber optic cables 18 and 19 and the transmitter 3 and the receiver 5 are preferably identical educated. They also preferably have one rectangular or bar-shaped cross section and the transmitter 3 as well as the receiver each a corresponding bar-shaped Windows 23 and 27.
  • the measuring arrangement 8 works in a one-way process, that means at a defined distance from Transmitter 3 is the receiver 5 through the fiber optic cable 18 is formed.
  • the optical fiber cable 18 thus serves only as a transmission element for the received light and is mechanically coupled to the light sensor 26.
  • the sensor 26 converts the received light into an electrical signal um, which is used for the further measurement purpose.
  • the two are Windows 23 and 27 aligned exactly parallel to each other and inclined with respect to the transport direction 10.
  • the distance 24 is now arranged so that the beam-shaped light beam 6 between the transmitter 3 and the receiver 5 from the book spine 4 is driven through individually.
  • a lower area 6b of the light beam 6 is located when passing through Spine 1 below the spine 4 and is thus received by the receiver 5.
  • An area 6a is also covered when the spine 4 in the measuring arrangement 8 is not glued.
  • Covered area 6 is here, however smaller than the area covered by the measuring arrangement 9, since here the applied glue layer 12 corresponds to the Layer thickness also covers part of the light beam.
  • the windows 23 and 27 are now arranged so that the book spines cover about 50% of the light beam, for example. This has the consequence that the electrical signal of the sensor element 26 correspondingly also only 50% of the maximum value corresponds, since in the absence of a book block 1 the Receiver 5 receives 100% of the light emitted by the transmitter.
  • the two measuring arrangements are preferred 8 and 9 are identical. As a consequence, that the electrical signal of the measuring arrangement 8 and the electrical Signal of the measuring arrangement 9 are equivalent and compared can be. It is now essential that they are not glued book blocks 1 always the same signals in the measuring arrangement 8 result.
  • the signals in the measuring arrangement 9 are however depending on the glue application and in particular on the Layer thickness A ( Figure 1) of the glue layer 12.
  • the difference of the two measurement signals can now be used to to measure effective glue thickness.
  • the difference in signals but can also be used to make a statement whether the glue application in a predetermined defined area lies or not.
  • a longitudinal profile of the glue layer could be shown graphically 12 can be recorded.
  • the device according to the invention thus enables each glue application to be placed on a book block 1 can be monitored. Glue application errors, for example caused by dirt, dust or glue threads can be or by clamping a book block 1 (e.g. misalignment) can be determined immediately.
  • the aforementioned inclination of the windows 23 and 27 enables one particularly precise measurement with fiber optic cables. Because of the inclination the windows 23 and 27 are in accordance with FIG Area of the glue layer 12 more light fibers 25 than in one vertical arrangement. As a rule, are a matter of course significantly more light fibers 25 are present than shown in FIG. 6.
  • the transmission medium is preferably a temperature-resistant one Fiber optic cables, however, are other means of transmission conceivable.

Abstract

The method involves applying glue on a spine during passage of a book block (1) through a book binding machine, and monitoring the application of glue by measuring the thickness of the glue that is applied as it passes through a measuring zone which is formed by a beam. Preferably, the zone is formed by a transmitter (3) and receiver (5) acting as a measurement transducer in a zone transverse to the direction of movement (10) of the book block. The measurement is converted into a signal which is transmitted for comparison with a setpoint value.

Description

Die Erfindung betrifft ein Verfahren zum Ueberwachen des Leimauftrages auf einen Rücken eines in einer Buchbindemaschine bearbeiteten und durch Kleben gebundenen Buchblockes durch Messen der Leimauftragsdicke.The invention relates to a method for monitoring the glue application on a back one in a bookbinding machine edited and bound by book block Measure the glue application thickness.

Das Beleimen von Buchblöcken in Buchbindemaschinen ist seit langem bekannt. Der Leim wird auf den Buchrücken als Schicht mit Leimrollen aufgetragen. Für die Qualität und die Haltbarkeit der aus den Buchblöcken hergestellten Druckprodukten ist es nun wesentlich, dass der Leim gleichmässig und überall mit der optimalen Schichtdicke aufgetragen wird. Zur Kontrolle des Leimauftrages wurden bisher beleimte Buchblöcke von Auge kontrolliert und dazu auch aufgeschnitten. Dies ist jedoch vergleichsweise aufwendig und kleinere Schichtdickenunterschiede oder Fehler können von Auge nicht oder erst spät festgestellt werden. The gluing of book blocks in bookbinding machines has been around since known for a long time. The glue is applied to the spine as a layer applied with glue rolls. For quality and durability of the printed products made from the book blocks It is now essential that the glue be evenly and everywhere with the optimal layer thickness is applied. To control the Previously glued book blocks were checked by eye and also cut open. However, this is comparative complex and smaller differences in layer thickness or errors can not be noticed by the eye or only late will.

Im übrigen wird auf das Buch "Klebebinden" des Verlages Beruf + Schule, Itzehoe verwiesen.For the rest, the book "Perfect Binding" by the publisher becomes a profession + School, Itzehoe referenced.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit dem eine einfachere und zuverlässigere Ueberwachung des Leimauftrages möglich ist.The invention is based on the object of a method create with which a simpler and more reliable monitoring of the glue application is possible.

Diese Aufgabe ist nach dem kennzeichnenden Teil des Patentanspruches 1 gelöst.This object is according to the characterizing part of the claim 1 solved.

Bei einer erfindungsgemässen Vorrichtung werden die Buchblöcke an einem Sender und einem diesem zugeordneten Empfänger, die zusammenwirkend als Messwertgeber, quer zum Förderpfad eines Buchblockes einen Messbereich bildend, in der Buchbindemaschine angeordnet sind, vorbeigeführt, derart, dass zumindest die an dem Buchblockrücken aufgetragene Leimschicht den Messbereich teilweise durchsetzt.
Der durch den Buchblockrücken bzw. die Leimschicht abgedeckte oder der nicht abgedeckte Sendebereich des Messbereichs kann an einen Sensor zurückgekoppelt und ausgewertet werden. Der abgedeckte Mess- resp. Sendebereich ist abhängig von der Leimdicke.
Die erfindungsgemässe Vorrichtung erlaubt eine automatische und eine kontinuierliche Ueberwachung des Leimauftrages, so-dass auch Abweichungen, beispielsweise Toleranzabweichungen, unbeleimte Bereiche oder Einschlüsse feststellbar sind.
Da Sender und Empfänger seitlich neben dem Förderpfad der Buchblöcke angeordnet sind, kann eine Verschmutzung der Vorrichtung ausgeschlossen werden.
Eine Verlängerung des Förderpfades ist wegen der Vorrichtung nicht erforderlich, weil Sender und Empfänger problemlos unterbringbar sind. In a device according to the invention, the book blocks are guided past a transmitter and a receiver assigned to it, which cooperate as a measuring transducer and form a measuring area across the conveying path of a book block in the bookbinding machine, in such a way that at least the layer of glue applied to the back of the book block covers the measuring area partially enforced.
The transmission range of the measuring range covered or not covered by the book block spine or the glue layer can be fed back to a sensor and evaluated. The covered measuring resp. The transmission range depends on the thickness of the glue.
The device according to the invention permits automatic and continuous monitoring of the glue application, so that deviations, for example tolerance deviations, non-glued areas or inclusions can also be determined.
Since the transmitter and receiver are arranged to the side of the conveying path of the book blocks, contamination of the device can be excluded.
An extension of the funding path is not necessary because of the device, because the transmitter and receiver can be accommodated without any problems.

Eine Messung der effektiven Leimdicke ist dann besonders exakt möglich, wenn gemäss einer Weiterbildung der Erfindung der Sender und der Empfänger nach dem Leimauftrag und ein zweiter Sender und Empfänger vor dem Leimauftrag angeordnet sind. Die eine Messung erfolgt bei noch nicht beleimten Buchblock und die zweite bei beleimten Buchblock. Vorzugsweise sind beide Messanordnungen resp. Messwertgeber unter gleichen mechanischen und elektrischen Voraussetzungen installiert, so dass jeweils gleichwertige elektrische Signale zur Verfügung stehen, die verglichen werden können.
Insbesondere kann der Unterschied der beiden Messsignale dazu verwendet werden, um die effektive Leimschicht bzw. Leimdicke zu messen. Es ist aber auch möglich, lediglich eine Aussage zu treffen ob der Leimauftrag in einem vorbestimmten Bereich liegt oder nicht.The effective glue thickness can be measured particularly precisely if, according to a further development of the invention, the transmitter and the receiver are arranged after the glue application and a second transmitter and receiver before the glue application. One measurement takes place with the book block not yet glued and the second with the book block glued. Preferably, both measuring arrangements are Transducers installed under the same mechanical and electrical conditions, so that equivalent electrical signals are available that can be compared.
In particular, the difference between the two measurement signals can be used to measure the effective glue layer or glue thickness. However, it is also possible to only make a statement as to whether the glue application is in a predetermined range or not.

Eine besonders genaue Messung ergibt sich dann, wenn die Vorrichtung gemäss einer Weiterausgestaltung der Erfindung einen Sender mit einem balkenförmigen Sendefenster aufweist, das quer zur Laufrichtung des Buchrückens gesehen geneigt ist.A particularly accurate measurement results when the device according to a further embodiment of the invention Has transmitter with a bar-shaped transmission window, the seen transversely to the direction of the spine.

Das balkenförmige Sendefenster kann vorzugsweise durch ein im Querschnitt balkenförmiges Lichtfaserkabel gebildet sein, das der Neigung entsprechend eine hohe Faserdichte quer zur Förderrichtung aufweist.The bar-shaped transmission window can preferably by an im Cross-section beam-shaped fiber optic cable to be formed corresponding to the inclination, a high fiber density across the conveying direction having.

Anschliessend wird die Erfindung unter Bezugnahme auf die Zeichnung, auf die bezüglich aller in der Beschreibung nicht näher erwähnten Einzelheiten verwiesen wird, anhand eines Ausführungsbeipiels erläutert. In der Zeichnung zeigen:

Fig. 1
schematisch das Beleimen eines Buchblockrückens in einer Buchbindemaschine,
Fig. 2
schematisch eine räumliche Darstellung eines Teils der erfindungsgemässen Vorrichtung,
Fig. 3
eine weitere Teilansicht der Vorrichtung,
Fig. 4
dito,
Fig. 5
schematisch eine Darstellung der Vorrichtung und
Fig. 6
schematisch eine Teilansicht der erfindungsgemässen Vorrichtung.
Subsequently, the invention will be explained with reference to the drawing, to which reference is made with regard to all details not mentioned in the description, using an exemplary embodiment. The drawing shows:
Fig. 1
schematically the gluing of a book block spine in a book binding machine,
Fig. 2
schematically a spatial representation of a part of the device according to the invention,
Fig. 3
another partial view of the device,
Fig. 4
dito,
Fig. 5
schematically a representation of the device and
Fig. 6
schematically a partial view of the device according to the invention.

Die in Figur 1 teilweise gezeigte Buchbindemaschine 2 weist ein stationäres und hier nur andeutungsweise veranschaulichtes Maschinengestell 2a auf, in dem an Führungsschienen 16 in einer Reihe hintereinander Zangen 11 in Richtung des Pfeiles 10 bewegbar sind. Mit den Zangen 11 werden Buchblöcke 1 nacheinander den verschiedenen Bearbeitungsbereichen zugeführt. Aus den zu Buchblöcken 1 vorerst lose zusammengetragenen Druckbogen werden in der Buchbindemaschine 2 gebundene Druckprodukte hergestellt. Bei dem in Figur 1 gezeigten Verarbeitungsschritt wird auf den bspw. beschnittenen Buchrücken 4 des Buchblocks 1 eine Leimschicht 12 aufgetragen, welche den Buchblock 1 zusammenhalten soll. Um den in Figur 1 links gezeigten nicht beleimten Buchblock la zu beleimen, wird dieser in Richtung des Pfeiles 10 über Rollen 15 geführt, die in einem unteren Bereich in Leim 13 eintauchen, der in einem Leimbecken 14 vorliegt. Die beiden Rollen 15 drehen im Uhrzeigersinn, während eine kleinere Rolle 15a, die in der Fachsprache Spinner genannt wird, in Gegenrichtung dreht und vom Buchrücken 4 überschüssigen Leim abstreift. Beim Beleimen werden die Buchblöcke 1 ohne Unterbruch kontinuierlich in Richtung des Pfeiles 10 weiterbewegt.The bookbinding machine 2 partially shown in FIG. 1 has a stationary one and only hinted at here Machine frame 2a, in which on guide rails 16 in a Row of pliers 11 in a row in the direction of arrow 10 are movable. With the pliers 11 book blocks 1 are successively fed to the various processing areas. Out the loosely gathered into book blocks 1 for the time being 2 bound printed products are in the bookbinding machine produced. In the processing step shown in Figure 1 is on the trimmed book spine 4 of the book block 1 a layer of glue 12 applied, which hold the book block 1 together should. Not the one shown in Figure 1 on the left To glue book block la, this is directed towards the arrow 10 guided over rollers 15, which are in a lower Immerse the area in glue 13 that is in a glue pool 14. The two rollers 15 rotate clockwise while a smaller roll 15a, which is called spinner in technical language , turns in the opposite direction and excess of the book spine 4 Strips off glue. The book blocks are used for gluing 1 continuously without interruption in the direction of arrow 10 moved on.

Zur Ueberwachung des Leimauftrages ist eine Messeinrichtung vorgesehen, die zwei im Abstand zueinander angeordnete Messwertgeber bzw. Messanordnungen 8 und 9 aufweist. Die Messanordnung 8 befindet sich in Transportrichtung 10 gesehen vor dem Leimbecken 14 und die andere Messanordnung 9 nach dem Leimbecken 14. Beide Messanordnungen 8 und 9 sind vorzugsweise gleich ausgebildet und arbeiten nach demselben Prinzip.There is a measuring device for monitoring the glue application provided, the two sensors arranged at a distance from each other or measuring arrangements 8 and 9. The measurement arrangement 8 is seen in the transport direction 10 before the glue pool 14 and the other measuring arrangement 9 after the Glue pool 14. Both measuring arrangements 8 and 9 are preferred equally trained and work on the same principle.

Die in Figur 2 gezeigte Messanordnung 8 entspricht damit auch der Messanordnung 9. Die Messanordnung 8 weist einen Sender 3 und einen Empfänger 5 auf, zwischen denen sich eine Luftstrekke 24 befindet, die quer zur Transportrichtung 10 verläuft. Wie die Figur 5 zeigt, wird das Licht z.B. Infrarotlicht einer Lichtquelle 20 in ein Lichtfaserkabel 19 oder ein anderes geeignetes Uebertragungsmedium gekoppelt. Das vom Sender 3 abgestrahlte Licht wird von einem Empfänger 5 empfangen und mit einem Lichtfaserkabel 18 an ein lichtempfindliches Sensorelement 26 zurückgekoppelt. Die beiden Lichtfaserkabel 18 und 19 sowie der Sender 3 und der Empfänger 5 sind vorzugsweise identisch ausgebildet. Sie besitzen zudem vorzugsweise einen rechteckigen oder balkenförmigen Querschnitt und der Sender 3 als auch der Empfänger jeweils ein entsprechend balkenförmiges Fenster 23 bzw. 27. Die Messanordnung 8 arbeitet im Einwegverfahren, das heisst im definierten Abstand entsprechend zum Sender 3 befindet sich der Empfänger 5, der durch das Lichtfaserkabel 18 gebildet ist. Das Lichtfaserkabel 18 dient somit lediglich als Uebertragungselement für das empfangene Licht und ist mechanisch an den Lichtsensor 26 angekoppelt. Der Sensor 26 wandelt das empfangene Licht in ein elektrisches Signal um, das für den weiteren Messzweck verwendet wird.The measuring arrangement 8 shown in FIG. 2 thus also corresponds of the measuring arrangement 9. The measuring arrangement 8 has a transmitter 3 and a receiver 5, between which there is an air gap 24 is located, which extends transversely to the transport direction 10. As shown in Figure 5, the light is e.g. Infrared light one Light source 20 into a fiber optic cable 19 or other suitable Transmission medium coupled. The one emitted by transmitter 3 Light is received by a receiver 5 and with a fiber optic cable 18 to a light-sensitive sensor element 26 fed back. The two fiber optic cables 18 and 19 and the transmitter 3 and the receiver 5 are preferably identical educated. They also preferably have one rectangular or bar-shaped cross section and the transmitter 3 as well as the receiver each a corresponding bar-shaped Windows 23 and 27. The measuring arrangement 8 works in a one-way process, that means at a defined distance from Transmitter 3 is the receiver 5 through the fiber optic cable 18 is formed. The optical fiber cable 18 thus serves only as a transmission element for the received light and is mechanically coupled to the light sensor 26. The sensor 26 converts the received light into an electrical signal um, which is used for the further measurement purpose.

Wie die Figur 2 und insbesondere Figur 6 zeigen, sind die beiden Fenster 23 und 27 genau parallel zueinander ausgerichtet und bezüglich der Transportrichtung 10 geneigt. Der Abstand 24 ist nun so angeordnet, dass das balkenförmige Lichtbündel 6 zwischen dem Sender 3 und dem Empfänger 5 von den Buchrücken 4 einzeln durchfahren wird. Hierbei wird ein Bereich 6a des Lichtbündels 6 vom Buchrücken 4 abgedeckt und dieser Bereich 6a gelangt entsprechend nicht zum Empfänger 5, wie dies beispielsweise deutlich in Figur 4 gezeigt ist. Ein unterer Bereich 6b des Lichtbündels 6 befindet sich beim durchfahrenden Buchrücken 1 unterhalb des zu beleimenden Buchrückens 4 und wird somit vom Empfänger 5 empfangen. Ein Bereich 6a wird auch dann abgedeckt, wenn bei der Messanordnung 8 der Buchrücken 4 nicht beleimt ist. Der abgedeckte Bereicht 6 ist hier jedoch kleiner, als der bei der Messanordnung 9 abgedeckte Bereich, da hier nun die aufgetragene Leimschicht 12 entsprechend der Schichtdicke ebenfalls einen Teil des Lichtbündels abdeckt. Die Fenster 23 und 27 sind nun so angeordnet, dass die Buchrücken beispielsweise etwa 50 % des Lichtbündels abdecken. Dies hat zur Folge, dass das elektrische Signal des Sensorelementes 26 entsprechend ebenfalls nur 50 % des Maximalwertes entspricht, da bei Nichtanwesenheit eines Buchblockes 1 der Empfänger 5 100 % des vom Sender ausgesendeten Lichtes empfängt. Wie bereits erwähnt, sind vorzugsweise die beiden Messanordnungen 8 und 9 gleich ausgebildet. Dies hat zur Folge, dass das elektrische Signal der Messanordnung 8 und das elektrische Signal der Messanordnung 9 gleichwertig sind und verglichen werden können. Wesentlich ist nun auch, dass die nicht beleimten Buchblöcke 1 immer gleiche Signale bei der Messanordnung 8 ergeben. Die Signale bei der Messanordnung 9 sind jedoch abhängig vom Leimauftrag und insbesondere von der Schichtdicke A (Figur 1) der Leimschicht 12. Der Unterschied der beiden Messsignale kann nun dazu verwendet werden, die effektive Leimdicke zu messen. Der Unterschied der Signale kann aber auch dazu verwendet werden, eine Aussage zu treffen, ob der Leimauftrag in einem vorbestimmten definierten Bereich liegt oder nicht. Denkbar sind aber auch andere Anwendungen. Beispielsweise könnte graphisch ein Längspofil der Leimschicht 12 aufgezeichnet werden. Die erfindungsgemässe Vorrichtung ermöglicht somit, dass jeder Leimauftrag auf einen Buchblock 1 überwacht werden kann. Fehler beim Leimauftrag, die beispielsweise durch Verschmutzung, Staub oder Leimfäden verursacht sein können oder die durch das Einspannen eines Buchblockes 1 (bspw. Schieflage) entstehen, können sofort festgestellt werden.As FIG. 2 and in particular FIG. 6 show, the two are Windows 23 and 27 aligned exactly parallel to each other and inclined with respect to the transport direction 10. The distance 24 is now arranged so that the beam-shaped light beam 6 between the transmitter 3 and the receiver 5 from the book spine 4 is driven through individually. Here, an area 6a of the Beam of light 6 covered by the spine 4 and this area 6a accordingly does not reach the receiver 5, as is the case, for example is clearly shown in Figure 4. A lower area 6b of the light beam 6 is located when passing through Spine 1 below the spine 4 and is thus received by the receiver 5. An area 6a is also covered when the spine 4 in the measuring arrangement 8 is not glued. Covered area 6 is here, however smaller than the area covered by the measuring arrangement 9, since here the applied glue layer 12 corresponds to the Layer thickness also covers part of the light beam. The windows 23 and 27 are now arranged so that the book spines cover about 50% of the light beam, for example. This has the consequence that the electrical signal of the sensor element 26 correspondingly also only 50% of the maximum value corresponds, since in the absence of a book block 1 the Receiver 5 receives 100% of the light emitted by the transmitter. As already mentioned, the two measuring arrangements are preferred 8 and 9 are identical. As a consequence, that the electrical signal of the measuring arrangement 8 and the electrical Signal of the measuring arrangement 9 are equivalent and compared can be. It is now essential that they are not glued book blocks 1 always the same signals in the measuring arrangement 8 result. The signals in the measuring arrangement 9 are however depending on the glue application and in particular on the Layer thickness A (Figure 1) of the glue layer 12. The difference of the two measurement signals can now be used to to measure effective glue thickness. The difference in signals but can also be used to make a statement whether the glue application in a predetermined defined area lies or not. However, other applications are also conceivable. For example, a longitudinal profile of the glue layer could be shown graphically 12 can be recorded. The device according to the invention thus enables each glue application to be placed on a book block 1 can be monitored. Glue application errors, for example caused by dirt, dust or glue threads can be or by clamping a book block 1 (e.g. misalignment) can be determined immediately.

Die erwähnte Neigung der Fenster 23 und 27 ermöglicht eine besonders präzise Messung mit Lichtfaserkabeln. Durch die Neigung der Fenster 23 und 27 befinden sich gemäss Figur 6 im Bereich der Leimschicht 12 mehr Lichtfasern 25 als bei einer vertikalen Anordnung. In der Regel sind selbstverständlich wesentlich mehr Lichtfasern 25 vorhanden als in Figur 6 gezeigt. Das Uebertragungsmedium ist vorzugsweise ein temperaturbeständiges Glasfaserkabel, jedoch sind auch andere Uebertragunsgmittel denkbar.The aforementioned inclination of the windows 23 and 27 enables one particularly precise measurement with fiber optic cables. Because of the inclination the windows 23 and 27 are in accordance with FIG Area of the glue layer 12 more light fibers 25 than in one vertical arrangement. As a rule, are a matter of course significantly more light fibers 25 are present than shown in FIG. 6. The transmission medium is preferably a temperature-resistant one Fiber optic cables, however, are other means of transmission conceivable.

Claims (14)

Verfahren zum Ueberwachen des Leimauftrages auf einen Rücken eines in einer Buchbindemaschine bearbeiteten und durch Kleben gebundenen Buchblockes, durch Messen der Leimauftragsdicke, dadurch gekennzeichnet, dass zumindest die an dem Buchblockrücken aufgetragene Leimschicht mindestens einen quer zum Förderpfad der Buchblöcke gerichteten, aus einem Strahlenbündel gebildeter Messbereich teilweise durchsetzt.Procedure for monitoring the glue application on a back one in a bookbinding machine processed and bound by gluing Book block, by measuring the glue application thickness, characterized in that at least the one applied to the spine of the book block Glue layer at least one across the conveying path of the book blocks directed from one Partial beam of measurement formed enforced. Verfahren nach Anspruch 1, mit einem den Messbereich bildenden Messwertgeber aus Sender und Empfänger, die an dem Förderpfad eines Buchblockes sich gegenüberliegend oder auf einer Seite mit Reflexionseffekt wirkend angeordnet sind, dadurch gekennzeichnet, dass der durch den unbeleimten oder den beleimten Buchblockrücken abgedeckte oder der restliche Strahlenbündel eines Messbereichs in ein Messsignal umgewandelt und zur Vergleichsmessung verwendet wird.Method according to claim 1, with a measuring range forming transmitter from transmitter and Recipients on the conveyor path of a book block facing each other or on one Side arranged with a reflective effect are characterized in that the by the non-glued or glued book block spine covered or the rest of the rays of a measuring range into a measuring signal converted and used for comparison measurement becomes. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der aus der Vergleichsmessung resultierende Differenzwert mit einem der Leimauftragsdicke entsprechenden Sollwert verglichen und bedarfsfalls das Ergebnis zur Korrektur des Leimauftrages verwendet wird.A method according to claim 2, characterized in that from the comparative measurement resulting difference value with one of the Glue application thickness compared corresponding setpoint and if necessary the result for correction of the glue application is used. Verfahren nach einem der Ansprüche 1 bis 3, bei dem dem Leimauftrag ein Messbereich nachgeschaltet ist, dadurch gekennzeichnet, dass beim Messen der Leimauftragsdicke der unbeleimte Buchblockrücken als Bezugsgrösse des Messbereichs verwendet wird.Method according to one of claims 1 to 3, in which a measuring range follows the glue application is characterized in that when measuring the glue application thickness the non-glued Book block spine as reference size of the Measuring range is used. Verfahren nach einem der Ansprüche 1 bis 3, bei dem dem Leimauftrag ein Messbereich vor- und nachgeschaltet ist, dadurch gekennzeichnet, dass der dem unbeleimten Buchblockrücken zugeordnete vorgeschaltete Messbereich und der dem beleimten Buchblockrücken nachgeschaltete Messbereich durch eine gemeinsame Bezugsgrösse verbunden sind.Method according to one of claims 1 to 3, in which a measuring range is provided for the glue application and is connected downstream, that of the unglued book block spine assigned upstream measuring range and the downstream of the glued book block spine Measuring range through a common reference variable are connected. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 5, gekennzeichnet durch einen Sender und einen diesem zugeordneten Empfänger, die zusammenwirkend als Messwertgeber, quer zum Förderpfad eines Buchblokkes einen Messbereich bildend, in der Buchbindemaschine angeordnet sind, derart, dass zumindest die an dem Buchblockrücken aufgetragene Leimschicht den Messbereich teilweise durchsetzt.Device for performing the method according to claims 1 to 5, characterized by a transmitter and one assigned to it Receivers that work together as a transmitter, across the conveyor path of a book block forming a measuring area in the bookbinding machine are arranged such that at least the one applied to the spine of the book block Glue layer partially over the measuring range enforced. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Messbereich die Leimschicht in Dickenrichtung wenigstens an der freien Leimkante überragt.Device according to claim 7, characterized in that the measuring range is the glue layer in the thickness direction at least on the free one Glue edge protrudes. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Messeinheit stromabwärts einer Leimauftragsstation angeordnet ist.Device according to claim 7, characterized in that the measuring unit is downstream a glue application station is arranged. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Sender eines Messwertgebers ein balkenförmiges Sendefenster aufweist, das quer zur Laufrichtung des Buchblockrückens betrachtet geneigt angeordnet ist.Device according to claim 8, characterized in that the transmitter of a transmitter has a bar-shaped transmission window that transverse to the direction of the spine of the book block considered inclined. Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass ein weiterer Messwertgeber stromaufwärts der Leimauftragsstation angeordnet ist.Device according to one of claims 6 to 9, characterized in that another Sensor upstream of the glue application station is arranged. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Messwertgeber zur Abgabe gleichartiger Signale ausgebildet und die Empfänger der Messwertgeber mit einer Vergleichsvorrichtung zur Auswertung der Signale mit einem Rechner verbunden sind.Apparatus according to claim 10, characterized in that the transducer is for delivery trained similar signals and the Receiver of the transmitter with a comparison device to evaluate the signals are connected to a computer. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass der Rechner mit der Leimauftragsstation resp. der Buchbindemaschine steuerwirksam verbunden ist.Device according to claim 11, characterized in that the computer with the glue application station resp. the bookbinding machine tax effective connected is. Vorrichtung nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, dass die Leimauftragsstation und der Rechner durch einen Regelkreis verbunden sind.Device according to one of claims 6 to 12, characterized in that the glue application station and the computer through a control loop are connected. Vorrichtung nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, dass der Sender mit einer Lichtquelle und der Empfänger mit einem Messwertnehmer verbunden ist.Device according to one of claims 6 to 12, characterized in that the transmitter with a light source and the receiver with one Sensor is connected.
EP97810952A 1996-12-13 1997-12-08 Method of monitoring glue application onto the back of a book block, which is bound using glue and processed in a book binding machine as well as the device for carrying out the process Expired - Lifetime EP0847874B1 (en)

Applications Claiming Priority (3)

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CH3064/96 1996-12-13
CH306496 1996-12-13
CH306496 1996-12-13

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EP0847874A1 true EP0847874A1 (en) 1998-06-17
EP0847874B1 EP0847874B1 (en) 2001-08-01

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EP (1) EP0847874B1 (en)
JP (1) JPH10217634A (en)
DE (1) DE59704185D1 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP1234684A2 (en) * 2001-02-22 2002-08-28 Franz-Rudolf Vogl Method and device for controlling glue application in book binding machines
EP2050579A1 (en) 2007-10-15 2009-04-22 Heidelberger Druckmaschinen Aktiengesellschaft Device for monitoring and regulating an adhesive layer to a be applied when producing printed products
DE102021117590A1 (en) 2021-07-07 2023-01-12 Focke & Co. (Gmbh & Co. Kg) Method and device for detecting portions of adhesive

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Publication number Priority date Publication date Assignee Title
JP3672719B2 (en) * 1997-08-04 2005-07-20 ホリゾン・インターナショナル株式会社 Bookbinding equipment
GB0005333D0 (en) * 2000-03-07 2000-04-26 Watkiss Automation Ltd Methods of and apparatus for producing booklets
DE10210843A1 (en) * 2002-03-12 2003-10-09 Horst Rathert Perfect binders for the production of blocks and brochures, especially for short runs
GB2401820B (en) * 2003-05-21 2007-01-17 Watkiss Automation Ltd Booklet production
DE102004005246B4 (en) * 2004-01-28 2006-01-26 System Kurandt Gmbh Apparatus and method for monitoring a glue application to a substrate

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EP0275521A2 (en) * 1987-01-21 1988-07-27 Kolbus GmbH & Co. KG End-paper gluing unit for an adhesisve-binding machine
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DE3714226A1 (en) * 1987-04-29 1988-11-17 Lemke Wolfgang Method of adhesive binding and apparatus for carrying out this method

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US4782331A (en) * 1986-06-10 1988-11-01 U.S. Philips Corporation Photoelectric icing detector
EP0275521A2 (en) * 1987-01-21 1988-07-27 Kolbus GmbH & Co. KG End-paper gluing unit for an adhesisve-binding machine
DE3714226A1 (en) * 1987-04-29 1988-11-17 Lemke Wolfgang Method of adhesive binding and apparatus for carrying out this method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234684A2 (en) * 2001-02-22 2002-08-28 Franz-Rudolf Vogl Method and device for controlling glue application in book binding machines
EP1234684A3 (en) * 2001-02-22 2003-08-13 Franz-Rudolf Vogl Method and device for controlling glue application in book binding machines
EP2050579A1 (en) 2007-10-15 2009-04-22 Heidelberger Druckmaschinen Aktiengesellschaft Device for monitoring and regulating an adhesive layer to a be applied when producing printed products
DE102021117590A1 (en) 2021-07-07 2023-01-12 Focke & Co. (Gmbh & Co. Kg) Method and device for detecting portions of adhesive

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EP0847874B1 (en) 2001-08-01
US5941671A (en) 1999-08-24
DE59704185D1 (en) 2001-09-06
JPH10217634A (en) 1998-08-18

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