EP0021070B1 - Device and process for applying adhesive, particularly for glueing piles of sheets - Google Patents

Device and process for applying adhesive, particularly for glueing piles of sheets Download PDF

Info

Publication number
EP0021070B1
EP0021070B1 EP80102929A EP80102929A EP0021070B1 EP 0021070 B1 EP0021070 B1 EP 0021070B1 EP 80102929 A EP80102929 A EP 80102929A EP 80102929 A EP80102929 A EP 80102929A EP 0021070 B1 EP0021070 B1 EP 0021070B1
Authority
EP
European Patent Office
Prior art keywords
application roller
adhesive
metering container
application
roller
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.)
Expired
Application number
EP80102929A
Other languages
German (de)
French (fr)
Other versions
EP0021070A1 (en
Inventor
Karlheinz Hesselmann
Bernhard Tschiers
Ludwig Ertl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Planatolwerk Willy Hesselmann Chemische und Maschinenfabrik fur Klebetechnik
Original Assignee
Planatolwerk Willy Hesselmann Chemische und Maschinenfabrik fur Klebetechnik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Planatolwerk Willy Hesselmann Chemische und Maschinenfabrik fur Klebetechnik filed Critical Planatolwerk Willy Hesselmann Chemische und Maschinenfabrik fur Klebetechnik
Publication of EP0021070A1 publication Critical patent/EP0021070A1/en
Application granted granted Critical
Publication of EP0021070B1 publication Critical patent/EP0021070B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C9/00—Applying glue or adhesive peculiar to bookbinding
    • B42C9/0006—Applying glue or adhesive peculiar to bookbinding by applying adhesive to a stack of sheets
    • B42C9/0012—Applying glue or adhesive peculiar to bookbinding by applying adhesive to a stack of sheets with a roller

Definitions

  • the invention relates to a device and a method for applying adhesive, in particular for gluing sheet stack backs, consisting of an application roller immersed in an adhesive pool with at least one doctor blade that can be set against the circumference of the application roller and is located in the direction of advance of the sheet stack in front of its application point.
  • the sheet stack is clamped in a holder and guided along a linear or curved path. During this movement, the back of the stack of sheets to be glued slides over a rotating applicator roller that dips part of its circumference into an adhesive basin.
  • wiping devices such as. B. squeegee used, which are adjustable against the scope of the applicator roller.
  • the object of the invention is to develop an adhesive application device with an application roller driven in the optimum direction of rotation, with the aid of which it is possible to bring about a uniform and intensive coating of the workpiece to be machined, without complicated and costly adjustment measures being necessary for this.
  • the object of the invention is not only directed to the gluing of sheet stacks but can also be directed to the coating of other workpieces, also with other liquid or pasty substances.
  • the invention is characterized by a reversible direction of rotation drive for the applicator roller and by the arrangement of an additional adhesive metering container along the circumferential roller section adjacent to the applicator roller on the applicator roller, viewed in the direction of advance of the sheet stack, within the adhesive basin, the metering container being two gap-like relative to the jacket of the applicator roller Forms passages, of which the upper gap facing the workpiece to be glued is wider than the lower.
  • the edges of the metering container facing the application roller are preferably designed as doctor blades or similar scraping devices.
  • the reversible drive for the applicator roller first ensures that the optimal direction of rotation can be set for the coating of the workpiece, while the reverse direction of rotation can be used for the start of gluing. This means that the thickening of the coating to be found in the known method no longer occurs on the leading side of the workpiece.
  • the method for applying adhesive to a sheet stack back with a device according to the invention teaches that the application roller is first driven in a direction of rotation in the same direction as the feed of the sheet stack until the leading edge of the sheet stack has reached the application position, whereupon the direction of rotation the application roller is reversed. It is advisable here if the drive of the application roller is controlled by switches which can be actuated by the leading and trailing edges of the sheet stack or their tensioning devices.
  • the term “stack of sheets” can be replaced by“ workpiece, provided that other objects also need to avoid thickening of the coating on the leading edge of the workpiece.
  • the arrangement of a dosing container on the discharge side of the application roller which is also provided according to the invention, has the purpose of continuously carrying out the required, uniform amount of coating substance on the workpiece to be coated, even if the application roller is reversed in its direction of rotation according to the invention.
  • the application roller rotates in the same direction with the feed of the workpiece to be coated before the coating work is started, because of the differently dimensioned gaps between the edges of the metering container facing the application roller and the application roller, the metering container is filled, so that more substance is conveyed into the metering container is going to get out of it. With this direction of rotation the leading area of the workpiece will be layers.
  • the direction of rotation of the application roller is reversed, which means that the substance is now removed from the dosing container and transferred intensively to the workpiece when the application roller rotates in the opposite direction to the feed direction. If, according to the invention, the volume of the dosing container is several times larger than the maximum amount of adhesive required for a workpiece, then a uniform but also adequate coating of the workpiece is achieved.
  • the distance of the doctor blade arranged on the feed side of the application roller to the application roller is smaller than the upper gap width, but larger than the lower gap width between the metering container and the application roller.
  • This squeegee prevents an excessive amount of substance from being carried along by the application roller if it rotates in the same direction as the workpiece is fed before the application work begins.
  • This doctor blade can, for example, also be designed as a cylindrical, stationary rod and penetrate the adhesive basin. Of course, this doctor blade can also be arranged to be adjustable.
  • the invention provides in a further exemplary embodiment that the upper doctor blade of the metering container is arranged above the axis of the application roller and the normal adhesive level in the adhesive tank.
  • the static pressure of the medium present in the adhesive tank thus has practically no influence on the substance present in the dosing container.
  • the substance present in the dosing container is located in its mirror much closer to the workpiece to be coated, so that the risk of evaporation of the solvent possibly present in the substance is also substantially reduced in this way.
  • FIGS. 1 and 2 shows the gluing of a sheet stack 14, which is clamped in the usual way and can be moved past a rotatably arranged application roller 3.
  • This application roller 3 is located in an adhesive tank 1 and is intended to transfer the adhesive removed from the tank 1 to the sheet edges of the sheet stack 14.
  • a metering container 2 On the outlet side of the application roller 3 there is a metering container 2 which, with the walls 7 (see FIG. 3), engages around the front of the application roller 3 and seals the metering container 2 there from the adhesive tank 1. With its upper and lower wall, the dosing container 2 extends close to the application roller 3.
  • these upper and lower walls are designed as doctor blades 5 and 6.
  • the doctor blade 5 has a larger gap 11 than the doctor blade 6 with the gap 10 with respect to the application roller 3.
  • the inner surface of the doctor blade 5 is located above the axis of the applicator roller 3 and thus above the normal level inside the adhesive tank 1.
  • an overflow opening 8 is preferably provided in the upper region, through which the one located in the metering container 2 Substance can get back into the adhesive pool 1.
  • the application roller 3 is provided with a drive, not shown, reversible in the direction of rotation.
  • This drive can be reversed by means of special switches which can be actuated in particular by the leading and trailing edges of the workpiece 14.
  • the substance entrained on the circumference of the application roller 3 passes through the gap 11 into the metering container 2, where it is essentially retained because the gap 10 of the doctor blade 6 has a smaller width than the gap 11 of the doctor blade 5. If, in this direction of rotation 12 of the applicator roller 3, there is an excess delivery quantity for the metering container 2, the substance can escape again into the adhesive tank 1 through the overflow opening 8.
  • the application roller 3 rotates in the predominant area in opposite direction to the feed direction of the workpiece 14 during the application of the substance, whereby a more intensive coating takes place. However, since the application roller 3 rotates the other way round before reaching the workpiece 14 (see FIG. 1), the application of a particularly large amount at the starting area of the workpiece is avoided.

Description

Die Erfindung bezieht sich auf eine Vorrichtung und ein Verfahren zum Auftragen von Klebstoff, insbesondere zum Beleimen von Blattstapelrücken, bestehend aus einer in ein Klebstoffbecken eintauchenden Auftragewalze mit mindestens einer gegen den Umfang der Auftragewalze anstellbaren und in Vorschubrichtung des Blattstapels gesehen vor deren Auftragstelle liegenden Rakel.The invention relates to a device and a method for applying adhesive, in particular for gluing sheet stack backs, consisting of an application roller immersed in an adhesive pool with at least one doctor blade that can be set against the circumference of the application roller and is located in the direction of advance of the sheet stack in front of its application point.

. Im allgemeinen wird bei bekannten Anlagen der Blattstapel in einer Halterung eingespannt und entlang einer linearen oder gekrümmten Strecke geführt. Während dieser Bewegung gleitet der zu beleimende Blattstapelrücken über eine rotierende Auftragewalze, die mit einem Teil ihres Umfanges in ein Klebstoffbecken eintaucht. Um die Belagdicke des Klebstoffes auf dem Umfang der Auftragewalze zu dosieren, werden Abstreifeinrichtungen, wie z. B. Rakel, eingesetzt, die gegen den Umfang der Auftragewalze anstellbar sind.. In general, in known systems, the sheet stack is clamped in a holder and guided along a linear or curved path. During this movement, the back of the stack of sheets to be glued slides over a rotating applicator roller that dips part of its circumference into an adhesive basin. In order to meter the coating thickness of the adhesive on the circumference of the application roller, wiping devices, such as. B. squeegee used, which are adjustable against the scope of the applicator roller.

Es hat sich herausgestellt, daß ein besserer Auftrag des Klebstoffes auf dem Blattstapelrücken eintritt, wenn die Auftragewalze gegenläufig zum Vorschub des Blattstapels rotiert. Wenn sich der Blattstapel der Walze nähert und auf diese aufläuft, entsteht aber zwangsläufig an der vorauslaufenden Blattstapelkante ein Klebstoffwulst, der zum Abtropfen neigt und außerdem den unteren Teil der vorderen Stirnseite des betreffenden Blattstapels benetzt. Dieser nachteiligen Wirkung ist man bisher dadurch begegnet, daß man entweder das Bindegut im Moment des Auflaufens auf die Auftragewalze anhebt oder das Leimwerk kurzzeitig absenkt (DE-A-22 62 138). Diese Methode erfordert jedoch eine bewegliche Aufhängung des Leimwerkes mit zusätzlicher Abfederung oder eine Ausweichmöglichkeit der Spannstation.It has been found that a better application of the adhesive on the back of the sheet stack occurs when the application roller rotates in the opposite direction to the feed of the sheet stack. When the sheet stack approaches the roller and runs onto it, an inevitable bead of adhesive is formed on the leading edge of the sheet stack, which tends to drip and also wets the lower part of the front face of the sheet stack in question. This disadvantageous effect has hitherto been countered by either lifting the binding material onto the application roller at the moment of emergence or by briefly lowering the gluing unit (DE-A-22 62 138). However, this method requires a flexible suspension of the glue unit with additional cushioning or an alternative option for the tensioning station.

Die hierzu erforderlichen Verstellglieder bedürfen einer genauen Justierung, mit der auch die Anpassung auf die aufzutragende Klebstoffdicke erfolgen muß.The adjustment elements required for this require a precise adjustment, with which the adjustment to the adhesive thickness to be applied must also take place.

Die Aufgabe der Erfindung besteht darin, eine Klebstoffauftragevorrichtung mit einer in optimaler Drehrichtung angetriebenen Auftragewalze zu entwickeln, mit deren Hilfe es gelingt, eine gleichmäßige und intensive Beschichtung des zu bearbeitenden Werkstückes herbeizuführen, ohne daß komplizierte und kostenaufwendige Einstellmaßnahmen hierfür erforderlich sind. Die Aufgabe der Erfindung richtet sich nicht nur auf die Beleimung von Blattstapeln sondern kann auch auf die Beschichtung anderer Werkstücke, auch mit anderen flüssigen oder pastösen Substanzen gerichtet sein.The object of the invention is to develop an adhesive application device with an application roller driven in the optimum direction of rotation, with the aid of which it is possible to bring about a uniform and intensive coating of the workpiece to be machined, without complicated and costly adjustment measures being necessary for this. The object of the invention is not only directed to the gluing of sheet stacks but can also be directed to the coating of other workpieces, also with other liquid or pasty substances.

Die Erfindung ist gekennzeichnet durch einen drehrichtungsumkehrbaren Antrieb für die Auftragewalze und durch die Anordnung eines zusätzlichen Klebstoff-Dosierbehälters längs des sich in Vorschubrichtung des Blattstapels gesehen hinter der Auftragestelle auf der Auftragewalze anschließenden Walzenumfangsabschnitts innerhalb des Klebstoffbeckens, wobei der Dosierbehälter gegenüber dem Mantel der Auftragewalze zwei spaltartige Durchlässe bildet, von denen der obere, dem zu beleimenden Werkstück zugekehrte Spalt breiter als der untere bemessen ist. Die der Auftragewalze zugekehrten Ränder des Dosierbehälters sind vorzugsweise als Rakel oder ähnliche Abstreifeinrichtungen ausgebildet.The invention is characterized by a reversible direction of rotation drive for the applicator roller and by the arrangement of an additional adhesive metering container along the circumferential roller section adjacent to the applicator roller on the applicator roller, viewed in the direction of advance of the sheet stack, within the adhesive basin, the metering container being two gap-like relative to the jacket of the applicator roller Forms passages, of which the upper gap facing the workpiece to be glued is wider than the lower. The edges of the metering container facing the application roller are preferably designed as doctor blades or similar scraping devices.

Wenn in diesem Zusammenhang von « Klebstoff gesprochen ist, dann betrifft dies nur das bevorzugte Ausführungsbeispiel der Erfindung, ohne daß damit eine Beschränkung im Hinblick auf die Verwendung anderer flüssiger oder pastöser Substanzen gemeint ist.If one speaks of “adhesive” in this context, this only concerns the preferred exemplary embodiment of the invention, without this being intended to mean a restriction with regard to the use of other liquid or pasty substances.

Durch den drehrichtungsumkehrbaren Antrieb für die Auftragewalze wird zunächst erreicht, daß man für die Beschichtung des Werkstückes die optimale Drehrichtung einsteuern kann, während für den Beginn der Beleimung die umgekehrte Drehrichtung verwendet werden kann. Dies führt dazu, daß die beim bekannten Verfahren festzustellenden Verdickungen der Beschichtung an der vorauslaufenden Seite des Werkstückes nicht mehr eintreten. Um dies zu erreichen, lehrt das Verfahren zum Auftragen von Klebstoff auf einen Blattstapelrücken mit einer Vorrichtung nach der Erfindung, daß die Auftragewalze zunächst in einer dem Vorschub des Blattstapels gleichsinnigen Drehrichtung angetrieben wird bis der vorauslaufende Rand des Blattstapels die Auftrageposition erreicht hat, woraufhin die Drehrichtung der Auftragewalze umgekehrt wird. Hierbei empfiehlt es sich, wenn der Antrieb der Auftragewalze mit von den voraus- und nachlaufenden Kanten der Blattstapel oder deren Spannvorrichtungen betätigbaren Schaltern gesteuert wird.The reversible drive for the applicator roller first ensures that the optimal direction of rotation can be set for the coating of the workpiece, while the reverse direction of rotation can be used for the start of gluing. This means that the thickening of the coating to be found in the known method no longer occurs on the leading side of the workpiece. In order to achieve this, the method for applying adhesive to a sheet stack back with a device according to the invention teaches that the application roller is first driven in a direction of rotation in the same direction as the feed of the sheet stack until the leading edge of the sheet stack has reached the application position, whereupon the direction of rotation the application roller is reversed. It is advisable here if the drive of the application roller is controlled by switches which can be actuated by the leading and trailing edges of the sheet stack or their tensioning devices.

Auch bei dieser Definition der Erfindung kann der Begriff « Blattstapel ohne weiteres durch « Werkstück ersetzt werden, sofern es bei anderen Gegenständen ebenfalls darauf ankommt, eine Verdickung der Beschichtung an der vorauslaufenden Werkstückkante zu vermeiden.With this definition of the invention, too, the term “stack of sheets can be replaced by“ workpiece, provided that other objects also need to avoid thickening of the coating on the leading edge of the workpiece.

Die nach der Erfindung weiterhin vorgesehene Anordnung eines Dosierbehälters an der Ablaufseite der Auftragewalze hat den Zweck, dem zu beschichtenden Werkstück ständig die erforderliche, gleichmäßige Menge der Beschichtungssubstanz durchzuführen, auch wenn die Auftragewalze erfindungsgemäß in ihrer Drehrichtung umgekehrt wird. Dadurch, daß die Auftragewalze vor Beginn der Beschichtungsarbeit gleichsinnig mit dem Vorschub des zu beschichtenden Werkstückes umläuft, wird wegen der unterschiedlich bemessenen Spalte zwischen den der Auftragewalze zugekehrten Rändern des Dosierbehälters und der Auftragewalze eine Befüllung des Dosierbehälters herbeigeführt, wobei also mehr Substanz in den Dosierbehälter gefördert wird als aus ihm herausgelangen kann. Mit dieser Drehrichtung wird der vorauslaufende Bereich des Werkstückes beschichtet. Unmittelbar danach wird die Drehrichtung der Auftragewalze umgekehrt, was dazu führt, daß nun die Substanz aus dem Dosierbehälter entnommen und bei gegenläufig zur Vorschubrichtung rotierender Auftragewalze intensiv dem Werkstück übergeben wird. Wenn im Sinne der Erfindung das Volumen des Dosierbehälters um ein Mehrfaches größer als die für ein Werkstück maximal benötige Klebstoffmenge bemessen ist, dann wird dadurch eine gleichmäßige, aber auch ausreichende Beschichtung des Werkstückes erreicht.The arrangement of a dosing container on the discharge side of the application roller, which is also provided according to the invention, has the purpose of continuously carrying out the required, uniform amount of coating substance on the workpiece to be coated, even if the application roller is reversed in its direction of rotation according to the invention. Characterized in that the application roller rotates in the same direction with the feed of the workpiece to be coated before the coating work is started, because of the differently dimensioned gaps between the edges of the metering container facing the application roller and the application roller, the metering container is filled, so that more substance is conveyed into the metering container is going to get out of it. With this direction of rotation the leading area of the workpiece will be layers. Immediately afterwards, the direction of rotation of the application roller is reversed, which means that the substance is now removed from the dosing container and transferred intensively to the workpiece when the application roller rotates in the opposite direction to the feed direction. If, according to the invention, the volume of the dosing container is several times larger than the maximum amount of adhesive required for a workpiece, then a uniform but also adequate coating of the workpiece is achieved.

Damit der Füll- und Entleerungsvorgang des Dosierbehälters kontrolliert erfolgen kann, empfiehlt es sich, im Dosierbehälter eine Überströmöffnung vorzusehen, durch welche die Substanz beim Füllen des Dosierbehälters entweichen kann, wenn sein Fassungsvermögen erschöpft ist.So that the filling and emptying process of the dosing container can be carried out in a controlled manner, it is advisable to provide an overflow opening in the dosing container through which the substance can escape when the dosing container is filled when its capacity is exhausted.

Im Rahmen eines weiteren Ausführungsbeispiels der Erfindung ist vorgesehen, daß der Abstand der an der Zulaufseite der Auftragewalze angeordneten Rakel zur Auftragewalze kleiner als die obere Spaltbreite, jedoch größer als die untere Spaltbreite zwischen dem Dosierbehälter und der Auftragewalze ist. Mit dieser Rakel wird verhindert, daß eine zu große Substanzmenge von der Auftragewalze mitgenommen werden kann, wenn diese vor Beginn der Auftragearbeit gleichsinnig mit dem Vorschub des Werkstückes rotiert. Diese Rakel kann beispielsweise auch als eine zylinderförmige, ortsfeste Stange ausgebildet sein und das Klebstoffbecken durchsetzen. Selbstverständlich kann diese Rakel auch einstellbar angeordnet sein.In the context of a further exemplary embodiment of the invention it is provided that the distance of the doctor blade arranged on the feed side of the application roller to the application roller is smaller than the upper gap width, but larger than the lower gap width between the metering container and the application roller. This squeegee prevents an excessive amount of substance from being carried along by the application roller if it rotates in the same direction as the workpiece is fed before the application work begins. This doctor blade can, for example, also be designed as a cylindrical, stationary rod and penetrate the adhesive basin. Of course, this doctor blade can also be arranged to be adjustable.

Schließlich sieht die Erfindung in einem weiteren Ausführungsbeispiel vor, daß die obere Rakel des Dosierbehälters oberhalb der Achse der Auftragewalze und des normalen Klebstoff-Spiegels im Klebstoffbecken angeordnet ist. Damit hat der statische Druck des im Klebstoffbecken vorhandenen Mediums praktisch keinen Einfluß auf die im Dosierbehälter vorhandene Substanz. Andererseits ist diese im Dosierbehälter vorhandene Substanz in ihrem Spiegel wesentlich näher zum zu beschichtenden Werkstück gelegen, so daß auf diese Weise auch die Verdunstungsgefahr des in der Substanz eventuell vorhandenen Lösungsmittels wesentlich vermindert wird.Finally, the invention provides in a further exemplary embodiment that the upper doctor blade of the metering container is arranged above the axis of the application roller and the normal adhesive level in the adhesive tank. The static pressure of the medium present in the adhesive tank thus has practically no influence on the substance present in the dosing container. On the other hand, the substance present in the dosing container is located in its mirror much closer to the workpiece to be coated, so that the risk of evaporation of the solvent possibly present in the substance is also substantially reduced in this way.

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispieles schematisch dargestellt. Es zeigen :

  • Figur 1 einen Längsschnitt durch eine Klebstoffauftragevorrichtung für Blattstapel vor Beginn der Beschichtung,
  • Figur 2 einen Längschnitt gemäß Fig. 1 in einer Stellung während der Beschichtung und
  • Figur 3 eine Draufsicht auf die Anordnung gemäß Fig. 1 und 2.
The invention is shown schematically in the drawing using an exemplary embodiment. Show it :
  • FIG. 1 shows a longitudinal section through an adhesive application device for sheet stacks before the start of the coating,
  • 2 shows a longitudinal section according to FIG. 1 in one position during the coating and
  • 3 shows a plan view of the arrangement according to FIGS. 1 and 2.

Das Ausführungsbeispiel der Fig. 1 und 2 zeigt die Beleimung eines Blattstapels 14, der in üblicher Weise eingespannt ist und an einer drehbar angeordneten Auftragewalze 3 vorbei bewegbar ist. Diese Auftragewalze 3 befindet sich in einem Klebstoffbecken 1 und ist dazu bestimmt, den aus dem Becken 1 entnommenen Klebstoff auf die Blattkanten des Blattstapels 14 zu übergeben.The embodiment of FIGS. 1 and 2 shows the gluing of a sheet stack 14, which is clamped in the usual way and can be moved past a rotatably arranged application roller 3. This application roller 3 is located in an adhesive tank 1 and is intended to transfer the adhesive removed from the tank 1 to the sheet edges of the sheet stack 14.

Ablaufseitig von der Auftragewalze 3 befindet sich ein Dosierbehälter 2, der mit den Wänden 7 (vergl. Fig. 3) die Auftragewalze 3 stirnseitig umgreift und dort den Dosierbehälter 2 gegenüber dem Klebstoffbecken 1 abdichtet. Mit seiner oberen und unteren Wand reicht der Dosierbehälter 2 bis nahe an die Auftragewalze 3 heran. Diese oberen und unteren Wände sind beim Ausführungsbeispiel der Erfindung als Rakel 5 und 6 ausgebildet. Hierbei weist die Rakel 5 einen größeren Spalt 11 als die Rakel 6 mit dem Spalt 10 gegenüber der Auftragewalze 3 auf.On the outlet side of the application roller 3 there is a metering container 2 which, with the walls 7 (see FIG. 3), engages around the front of the application roller 3 and seals the metering container 2 there from the adhesive tank 1. With its upper and lower wall, the dosing container 2 extends close to the application roller 3. In the exemplary embodiment of the invention, these upper and lower walls are designed as doctor blades 5 and 6. The doctor blade 5 has a larger gap 11 than the doctor blade 6 with the gap 10 with respect to the application roller 3.

Zulaufseitig befindet sich vor der Auftragewalze 3 eine weitere Rakel 4, die gegenüber der Auftragewalze 3 einen Spalt 9 bestimmt, der kleiner als der Spalt 11 aber größer als der Spalt 10 ist.On the inlet side, in front of the application roller 3, there is a further doctor blade 4 which, compared to the application roller 3, defines a gap 9 which is smaller than the gap 11 but larger than the gap 10.

Die Innenfläche der Rakel 5 befindet sich beim Ausführungsbeispiel oberhalb der Achse der Auftragewalze 3 und damit oberhalb des normalen Spiegels innerhalb des Klebstoffbeckens 1. In der Wandung des Dosierbehälters 2 ist, vorzugsweise im oberen Bereich eine Überströmöffnung 8 vorgesehen, durch welche die im Dosierbehälter 2 befindliche Substanz wieder in das Klebstoffbecken 1 zurückgelangen kann.In the exemplary embodiment, the inner surface of the doctor blade 5 is located above the axis of the applicator roller 3 and thus above the normal level inside the adhesive tank 1. In the wall of the metering container 2, an overflow opening 8 is preferably provided in the upper region, through which the one located in the metering container 2 Substance can get back into the adhesive pool 1.

Die Auftragewalze 3 ist mit einem nicht dargestellten, drehrichtungsumkehrbaren Antrieb versehen. Dieser Antrieb kann durch besondere Schalter, die insbesondere von den vorauslaufenden und nachlaufenden Kanten des Werkstückes 14 betätigbar sind, umgesteuert werden.The application roller 3 is provided with a drive, not shown, reversible in the direction of rotation. This drive can be reversed by means of special switches which can be actuated in particular by the leading and trailing edges of the workpiece 14.

Die Wirkungsweise der erfindungsgemäßen Anordnung ist folgende : In der Stellung gemäß Fig. 1, bei der ein Werkstück 14 sich noch in Distanz zur Auftragewalze 3 befindet, rotiert die Auftragewalze 3 gleichsinnig mit der. Vorschubrichtung des Werkstückes 14, was durch den Drehrichtungspfeil 12 angedeutet ist. Bei dieser Drehrichtung nimmt die Auftragewalze 3 den im Klebstoffbecken 1 befindlichen Klebstoff (oder eine andere Substanz) im Gegenuhrzeigersinn mit, wobei die Rakel 4, die gemäß Ausführungsbeispiel auch als zylinderförmige Stange ausgebildet sein kann, nur eine dem Spalt 9 entsprechende Substanzmenge durchläßt. Die auf dem Umfang der Auftragewalze 3 mitgenommene Substanz gelangt durch den Spalt 11 in den Dosierbehälter 2, wo sie im wesentlichen zurückgehalten wird, weil der Spalt 10 der Rakel 6 eine geringere Breite als der Spalt 11 der Rakel 5 aufweist. Sollte sich bei diesem Drehsinn 12 der Auftragewalze 3 eine Überfördermenge für den Dosierbehälter 2 ergeben, kann die Substanz durch die Überströmöffnung 8 wieder in das Klebstoffbecken 1 entweichen.The operation of the arrangement according to the invention is as follows: In the position according to FIG. 1, in which a workpiece 14 is still at a distance from the application roller 3, the application roller 3 rotates in the same direction as the. Feed direction of the workpiece 14, which is indicated by the direction of rotation arrow 12. In this direction of rotation, the applicator roller 3 takes the adhesive (or another substance) located in the adhesive basin 1 in a counterclockwise direction, the doctor blade 4, which according to the exemplary embodiment can also be designed as a cylindrical rod, only lets through a quantity of substance corresponding to the gap 9. The substance entrained on the circumference of the application roller 3 passes through the gap 11 into the metering container 2, where it is essentially retained because the gap 10 of the doctor blade 6 has a smaller width than the gap 11 of the doctor blade 5. If, in this direction of rotation 12 of the applicator roller 3, there is an excess delivery quantity for the metering container 2, the substance can escape again into the adhesive tank 1 through the overflow opening 8.

Sobald das Werkstück 14 mit der in Laufrichtung gesehen vorderen Kante den höchsten Punkt (Auftragposition) der Auftragewalze 3 überschritten hat, erfolgt durch einen nicht dargestellten Schalter in Abhängigkeit vom vorauslaufenden Rand des Werkstückes 14 eine Umsteuerung der Drehrichtung der Auftragewalze 3, so daß diese nun in Richtung des Pfeiles 12 gemäß Fig. 2 umläuft. Bei dieser Drehrichtung der Auftragewalze 3 wird nun die aufzutragende Substanz dem Dosierbehälter 2 entnommen, der sich fortlaufend entleert, weil der Spalt 10 kleiner als der Spalt 11 ist. Da aber das Volumen des Dosierbehälters 2 wesentlich größer als die auf das einzelne Werkstück 14 aufzubringende Substanzmenge ist, kann dadurch keine Gefährdung entstehen. Wesentlich ist allein, daß die Auftragewalze 3 während des Auftragens der Substanz auf das Werkstück 14 im überwiegenden Bereich gegensinnig zur Vorschubrichtung des Werkstückes 14 umläuft, wodurch eine intensivere Beschichtung stattfindet. Da aber die Auftragewalze 3 vor Erreichen des Werkstückes 14 umgekehrt (siehe Fig. 1) umläuft, wird das Auftragen einer besonders großen Menge am Anfangsbereich des Werkstückes vermieden.As soon as the workpiece 14 with the front edge viewed in the direction of travel has exceeded the highest point (application position) of the application roller 3, a switch is made as a function of the leading edge of the workpiece 14, not shown tion of the direction of rotation of the application roller 3, so that it now rotates in the direction of arrow 12 according to FIG. 2. In this direction of rotation of the application roller 3, the substance to be applied is now removed from the metering container 2, which is continuously emptied because the gap 10 is smaller than the gap 11. However, since the volume of the metering container 2 is substantially larger than the amount of substance to be applied to the individual workpiece 14, there can be no danger. It is only essential that the application roller 3 rotates in the predominant area in opposite direction to the feed direction of the workpiece 14 during the application of the substance, whereby a more intensive coating takes place. However, since the application roller 3 rotates the other way round before reaching the workpiece 14 (see FIG. 1), the application of a particularly large amount at the starting area of the workpiece is avoided.

Claims (8)

1. Apparatus for applying adhesive, especially for gluing the backs of stacked sheets (pages), consisting of an application roller dipping into an adhesive tank with at least one doctor blade adjustable against the circumference of the application roller and, seen in the feed direction of the stacked sheets, lying in front of the adhesive application point, characterised by a rotationally reversible drive means for the application roller (3) and by the arrangement of an additional adhesive metering container (2) adjoining the application roller (3) along the circumference section within the adhesive tank (1) and behind the application point on the roller (3) as seen in the feed direction of the stacked sheets, wherein the metering container (2) forms two gap-like passages (10, 11) with respect to the jacket of the application roller (3), the upper gap (11), facing the article to be glued, being wider than the lower gap (10).
2. Apparatus according to claim 1, characterised in that the edges (5, 6) of the metering container (2) facing the application roller (3) are formed as a doctor blade or similar stripping device.
3. Apparatus according to claim 1 or 2, characterised in that the metering container (2) has an overflow opening (8).
4. Apparatus according to claim 1 or one of the following claims, characterised in that the volume of the metering container (2) is a multiple of the maximum amount of adhesive required for an article (14).
5. Apparatus according to claims 2 to 4, characterised in that the distance between the doctor knife (4) arranged on the feed side of the application roller (3) and the application roller (3) itself is smaller than the upper gap width (11) but is greater than the lower gap width (10) between the metering container (2) and the application roller (3).
6. Apparatus according to claims 2 to 5, characterised in that the upper doctor knife (5) of the metering container (2) is arranged above the axis of the application roller (3) and the normal adhesive level in the adhesive tank (1).
7. Method for applying adhesive to the backs of stacked sheets with an apparatus according to claim 1 or the following claims, characterised in that the application roller is first of all driven in the same rotational direction as the feed direction of the stacked sheets until the forward-running edge of the stack has reached the application position, whereupon the rotational direction of the application roller is reversed.
8. Method according to claim 7, characterised in that the drive of the application roller is regulated by switches that can be actuated by the leading and rear edges of the stacked sheets or their clamping devices.
EP80102929A 1979-06-06 1980-05-24 Device and process for applying adhesive, particularly for glueing piles of sheets Expired EP0021070B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2922978 1979-06-06
DE2922978A DE2922978C2 (en) 1979-06-06 1979-06-06 Device and method for applying adhesive, in particular for applying glue to stacks of sheets

Publications (2)

Publication Number Publication Date
EP0021070A1 EP0021070A1 (en) 1981-01-07
EP0021070B1 true EP0021070B1 (en) 1983-02-16

Family

ID=6072616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102929A Expired EP0021070B1 (en) 1979-06-06 1980-05-24 Device and process for applying adhesive, particularly for glueing piles of sheets

Country Status (4)

Country Link
US (1) US4310576A (en)
EP (1) EP0021070B1 (en)
JP (1) JPS5835747B2 (en)
DE (1) DE2922978C2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4753190A (en) * 1982-02-22 1988-06-28 Dayco Products, Inc. Apparatus for producing elastomer-coated bias fabric
JPH0245172U (en) * 1988-09-16 1990-03-28
US5232498A (en) * 1989-12-04 1993-08-03 Fujitsu Limited Apparatus for applying gel to an ultrasonic probe
JP2606751B2 (en) * 1990-07-20 1997-05-07 東芝メカトロニクス株式会社 Adhesive application method
DE4036726C2 (en) * 1990-11-17 2001-06-28 Hauni Werke Koerber & Co Kg Coating device
US5348611A (en) * 1992-05-20 1994-09-20 General Signal Corporation Die paste transfer system and method
US5605575A (en) * 1995-02-03 1997-02-25 Anderson; Clarence L. Interchangeable adhesive-applying apparatus
DE19922100A1 (en) * 1999-05-17 2000-11-23 Bielomatik L O S Gmbh Binding process for books, book blocks, brochures etc., involving clamping book block with spine downward, applying glue and pressurizing glue pad
US20030010284A1 (en) * 2001-07-11 2003-01-16 Dynic Corporation Glueing device in bookbinding
DE102005002737A1 (en) * 2005-01-20 2006-08-24 Kolbus Gmbh & Co. Kg Device for applying adhesive to book blocks
JP4345786B2 (en) * 2006-08-30 2009-10-14 コニカミノルタビジネステクノロジーズ株式会社 Bookbinding apparatus and image forming system
JP4329796B2 (en) * 2006-08-30 2009-09-09 コニカミノルタビジネステクノロジーズ株式会社 Bookbinding apparatus and image forming system
DE202008006314U1 (en) 2008-05-08 2008-07-31 Heidelberger Druckmaschinen Ag Apparatus for applying adhesive
JP5246423B2 (en) * 2009-04-10 2013-07-24 コニカミノルタビジネステクノロジーズ株式会社 Post-processing apparatus and image forming system
CN103702840B (en) * 2011-09-02 2015-07-29 好利用国际株式会社 The viscose unit of wireless book binding apparatus
US9850404B2 (en) * 2014-07-31 2017-12-26 Nike, Inc. Vacuum enabled article transfer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US998221A (en) * 1910-01-19 1911-07-18 Harry A Wheeler Tape-pasting machine.
US2141978A (en) * 1936-03-12 1938-12-27 Sun Engraving Company Ltd Rotary printing or coating machine
CH418113A (en) * 1965-03-19 1966-07-31 Bachofen & Meier Maschf Dosing and spreading squeegee
DE1948692A1 (en) * 1969-09-26 1971-04-01 Dahlgren Harold P Coating plastics webs
US3672326A (en) * 1970-10-13 1972-06-27 Addressograph Multigraph Method and apparatus for applying liquid developer to copy sheets
US3718115A (en) * 1971-01-27 1973-02-27 Int Paper Co Adhesive application system
BE786407A (en) * 1971-08-02 1973-01-18 Ilford Ltd COATING PROCESS AND APPARATUS, IN PARTICULAR TABLECLOTH
JPS5117926Y2 (en) * 1971-12-20 1976-05-13
US4014287A (en) * 1975-08-04 1977-03-29 Comstock & Wescott, Inc. High speed fluid applicator

Also Published As

Publication number Publication date
EP0021070A1 (en) 1981-01-07
JPS55165168A (en) 1980-12-23
US4310576A (en) 1982-01-12
JPS5835747B2 (en) 1983-08-04
DE2922978A1 (en) 1980-12-18
DE2922978C2 (en) 1983-07-07

Similar Documents

Publication Publication Date Title
EP0021070B1 (en) Device and process for applying adhesive, particularly for glueing piles of sheets
DE2203482B2 (en) Method and device for coating a material web with coating mass by means of at least two coating elements arranged at a distance from one another in the conveying direction of the web
DE3207620C2 (en) Device for applying a strip of glue to a moving material web
DE19542097C2 (en) Device for coating metal strips
EP0761316B1 (en) Device for applying glue
DE2206147C3 (en) Device for producing a liquid film to be transferred onto a material web
DE3406099A1 (en) COATING DEVICE FOR MATERIAL RAILS
DE2914531C2 (en) Device for the continuous application of a uniform coating to a material web
DE2513592A1 (en) Automatic feed glue spreader for edge-glueing machine - has spiral conveyor to return excess glue to glue pot
DE2332920A1 (en) DISCHARGE DEVICE
EP0056067A1 (en) Apparatus for applying a thin layer of a coating substance to a travelling material web
DE3311327C2 (en) Device for applying a layer of a flowable, fine ceramic mass to a carrier
DE1197357B (en) Device for applying fluids to strip-shaped material
DE7147739U (en) DEVICE FOR APPLYING A LIQUID MEDIUM FOR THE FORMATION OF A COATING LAYER ON PANEL-SHAPED OBJECTS PREFERRED FROM WOOD
DE653693C (en) Adhesive application device for sheet layers consisting of stacked workpieces
DE3003720C2 (en) Device for applying adhesive to the tips of a corrugated sheet of corrugated cardboard to be glued to a cover layer
DE2432540C3 (en) Device for binding stacks of sheets with hot melt adhesive
DE430133C (en) Machine for applying glue to cardboard neck strips
DE2944393C2 (en) Device for applying a thin layer of a coating material to a moving material web
DE3322411C2 (en) Device for applying a layer of a flowable, fine ceramic mass to a solid, continuously moving support
CH222852A (en) Method for applying glue to Fournier edges while the Fournier is entering a Fournier assembly machine and device for carrying out the same.
DE2000385A1 (en) Viscous sugar compound applicator for - sweets manufacture
DE3232388A1 (en) Apparatus for the application of viscous substances to moving, strip-form material
DE1577765A1 (en) Device for applying viscous liquids to sheets or webs of paper and other materials
DE1913638A1 (en) Rotary cutting device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH FR GB NL SE

17P Request for examination filed

Effective date: 19810212

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH FR GB LI NL SE

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920428

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920505

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920512

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920518

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920531

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930531

Ref country code: CH

Effective date: 19930531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19931201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 80102929.9

Effective date: 19931210

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT