EP0369348B1 - Device for applying an adhesive strip - Google Patents
Device for applying an adhesive strip Download PDFInfo
- Publication number
- EP0369348B1 EP0369348B1 EP89120875A EP89120875A EP0369348B1 EP 0369348 B1 EP0369348 B1 EP 0369348B1 EP 89120875 A EP89120875 A EP 89120875A EP 89120875 A EP89120875 A EP 89120875A EP 0369348 B1 EP0369348 B1 EP 0369348B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- sizing cylinder
- sizing
- cylinder
- wiping cloth
- 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 - Lifetime
Links
- 239000000853 adhesive Substances 0.000 title claims abstract 3
- 230000001070 adhesive effect Effects 0.000 title claims abstract 3
- 239000004744 fabric Substances 0.000 claims abstract description 23
- 238000003860 storage Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims 17
- 238000004026 adhesive bonding Methods 0.000 abstract description 8
- 239000003292 glue Substances 0.000 description 69
- 238000003825 pressing Methods 0.000 description 12
- 238000005507 spraying Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
Definitions
- the invention relates to a device for applying a glue strip running transversely to the longitudinal direction of the web on a web, in particular a printed paper web, with a glue cylinder provided with glue nozzles arranged along at least one surface line, which rolls on the web, which preferably wraps partially around it.
- the application of the glue takes a certain amount of time and therefore the web must be kept in contact with the glue cylinder for a relatively long time, which in the case of a freshly printed web can lead to ink being deposited on the glue cylinder, which leads to further contamination of the glue cylinder and, accordingly, the web.
- Document DE-A-1 075 933 shows a device according to the preamble of claim 1.
- the wipe not only removes the glue residues and paint residues Glue cylinder from which this is kept clean and an exact punctiform application of glue is guaranteed, but also catches the spraying droplets, so that the resulting contamination of the web or the surrounding area is also avoided.
- the absorbency of the wipe it is also ensured that the glue absorbed by the wipe is held even when subjected to heavy loads and a low wipe consumption is nevertheless ensured.
- the wipe also offers the simple possibility of moistening the glue cylinder, which not only allows dried glue residues to be dissolved, but also prevents paint from being deposited on the glue cylinder from the start can be knitted. At the same time, this results in moistening of the web, which can facilitate a subsequent folding process.
- a moistened wipe offers the further advantageous possibility of closing the openings of the glue nozzles when the glue cylinder is at a standstill and preventing the glue from drying.
- the wipe can therefore expediently be moistened with water or the dampening solution customary in offset machines by means of a moistening device arranged upstream of the contact point with the glue cylinder.
- a further expedient measure can consist in that the wipe that can be wound up from a supply roll and onto a storage roll in the area between the Rolls from a preferably designed as an inflatable bellows pressing process, which is preferably relieved during the step-by-step transport of the wipe. This ensures that no wiping forces are transferred to the wiping cloth, which can preferably be transported in the opposite direction to the glue cylinder, during which the transport mechanism is relieved.
- two diametrically opposite wiping devices can be provided. This measure enables a simple reversal of the direction of rotation of the glue cylinder, only one wiping device needing to be activated at a time, but both can be activated in difficult cases.
- a reliable closure of all glue nozzles can be made possible at a standstill, in which both wipes are put on.
- the strands 2a, 2b are glued to one another in the region of each transverse fold line by means of a glue strip 3 running transversely to the longitudinal direction of the web.
- the strand 2a is guided in the form of a U-shaped loop in the illustrated embodiment, in which a transverse gluing device is located.
- This consists of a glue cylinder 4 wrapped by the associated strand 2a at an angle of more than 90 °, which is provided with a circumferential nozzle strip 5 or more circumferential nozzle strips 5.
- glue nozzles 6 which are arranged along a circumferential surface line and can be acted upon with glue in the wrapping area from the cylinder interior.
- Each glue nozzle 6 produces a punctiform glue application, which is transverse to the longitudinal direction of the web running glue strips 3 results.
- These are practically composed of several glue points arranged side by side, which is indicated in FIG. 1.
- the glue cylinder 4 is assigned a wiping device 7, which is arranged in the region of the outlet of the strand 2a from the glue cylinder 4 and whose task is to wipe the circumference of the glue cylinder 4 and which when the Strang 2 of the glue cylinder 4, that is to catch droplets spraying during the division of the glue application.
- the wiping device 7 contains a wiping cloth 10 which can be unwound from a supply roll 8 and wound onto a storage roll 9 and which in the area between the supply roll 8 and the storage roll 9 on the circumference of the glue cylinder 4 is pressable.
- the wiping cloth 10 is gripped by a pressing member 11 arranged between the supply roll 8 and the storage roll 9.
- this is designed as an inflatable bellows that presses the wipe 10 onto the glue cylinder 4 in the inflated state. In the relieved state of the bellows, there is a slight distance from the glue cylinder 4, so that the wipe 10 can be transported without stress.
- the wipe 10, which is transported against the direction of the glue cylinder 4, is transported step by step.
- the storage roll 9 can be driven in steps and the supply roll 8 can be unlocked in steps. At the same time, the pressure element 11 is relieved.
- the discharge run 10a of the wiping cloth 10 running from the pressing member 11, like the strand 2a running from the glue cylinder 4, is guided away from the glue cylinder 4, that is to the radially outward direction, the discharge run 10a of the wiping cloth running off the pressing member 10 and the one running off the glue cylinder 4 Area of the strand 2a opposite to form a gusset.
- the run-off run 10a of the wiping cloth is guided over the edge of the pressing member 11 and a deflecting member 12 projecting over this edge in the direction of the strand 2a running outward, before it runs onto the spreader roller 9 arranged radially outside the pressing member 11 with respect to the glue cylinder 4.
- the deflecting element 12 is simply designed as a bar molded onto the holder of the pressing element 11.
- the deflecting element 12 In the area between the pressing member 11 and the storage roller 9, there is thus a course which is bent in the direction of the strand 2a, that is to say a course of the runout run 10a of the wiping cloth which engages in the gusset between the glue cylinder 4 and the strand 2a running off it.
- This therefore not only wipes impurities in the form of glue blobs indicated at 13 from the circumference of the glue cylinder 4, but can also collect glue droplets 14 tangentially spraying from the glue cylinder 4 in the region of the run of the strand 2a.
- the strand 2a which is guided around the glue cylinder 4 in the form of a large wrap angle is over a deflecting roller 15 adjacent to the glue cylinder 4, which is arranged upstream of the pressure element 11 on the circumference of the glue cylinder 4, is pulled off the latter.
- the wiping cloth 10 can be moistened with water or a dampening solution customary in offset machines prior to its emergence on the associated pressing member 11 and accordingly before the contact point with the glue cylinder 4.
- a wiper cloth 10 is provided in the area between the supply roll 8 and the pressing member 11, which is provided with several spray nozzles 17 distributed over its length.
- the nozzles 17 are connected to a collecting space provided in the nozzle bar 16, which is filled with liquid and connected to a compressed air source for moistening the wipe 10, the existing liquid filling being blown out via the nozzles 17.
- the nozzles 17 are directed into the gusset between the pressing member 11 and the wiping cloth 10 running onto it, so that it is also possible to track the dampening solution during the wiping process.
- the wipe is moistened during or shortly before a transport step.
- a further dampening solution supply is only required between two transport steps in special cases.
- the nozzles 17 are covered by a protective plate 18 which has a drip edge located approximately above the contact point between the glue cylinder 4 and the pressing member 11.
- the moistening of the wipe 10 not only produces a particularly good cleaning effect, but at the same time also produces a moisture film on the glue cylinder 4, which counteracts the depositing of paint and at the same time moistens the strand 2a as a folding aid.
- the supply roll 8 is scanned by a box 19 which triggers a signal when the cloth supply runs out.
- the drive device provided for the fabric feed can be clocked automatically and can also be activated by hand. The same applies to the humidifier.
Landscapes
- Coating Apparatus (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Treatment Of Fiber Materials (AREA)
- Package Closures (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Aufbringen eines quer zur Bahnlängsrichtung verlaufenden Leimstreifens auf eine Bahn, insbesondere eine bedruckte Papierbahn, mit einem mit entlang wenigstens einer Mantellinie angeordneten Leimdüsen versehenen Leimzylinder, der auf der ihn vorzugsweise teilweise umschlingenden Bahn abrollt.The invention relates to a device for applying a glue strip running transversely to the longitudinal direction of the web on a web, in particular a printed paper web, with a glue cylinder provided with glue nozzles arranged along at least one surface line, which rolls on the web, which preferably wraps partially around it.
Die Erfahrung hat gezeigt, daß es beim Abziehen der Bahn vom Leimzylinder zu einer Teilung der vorhandenen Leimpunkte kommt, wobei ein Teil als Leimauftrag auf der Bahn verbleibt, ein anderer Teil am Rand der Düsenöffnungen zurückbleibt und ein weiterer Teil in Form kleiner Tröpfchen abgeschleudert wird. Es besteht daher die Gefahr, daß es zu Leimauftragfehlern und dementsprechend zu Ausschußproduktion kommen kann. Dies ist in erster Linie darauf zurückzuführen, daß sich auf dem Leimzylinder die Düsenöffnungen umfassende Leimpfützen bilden, die einen unexakten, schlierenhaften Leimauftrag ergeben, und daß die abspritzenden Leimtropfen, die mit zunehmendem Leimaufbau auf dem Leimzylinder immer größer werden, die Bahn und/oder den Leimzylinder verschmutzen. Hinzu kommt, daß der Leimauftrag eine gewisse Zeit erfordert und daß deshalb die Bahn verhältnismäßig lange in Kontakt mit dem Leimzylinder gehalten werden muß, was im Falle einer frisch bedruckten Bahn dazu führen kann, daß Farbe auf dem Leimzylinder abgelegt wird, was zu einer weiteren Verschmutzung des Leimzylinders und dementsprechend auch der Bahn führen kann.Experience has shown that when the web is pulled off the glue cylinder, there is a division of the existing glue points, one part remaining on the web as a glue application, another part remaining at the edge of the nozzle openings and another part being thrown off in the form of small droplets. There is therefore a risk that there will be glue application errors and accordingly can lead to scrap production. This is primarily due to the fact that glue pools forming the nozzle openings form on the glue cylinder, which result in an inexact, streaky glue application, and that the spraying glue drops, which become bigger and bigger with the glue build-up on the glue cylinder, the web and / or the Contaminate the glue cylinder. In addition, the application of the glue takes a certain amount of time and therefore the web must be kept in contact with the glue cylinder for a relatively long time, which in the case of a freshly printed web can lead to ink being deposited on the glue cylinder, which leads to further contamination of the glue cylinder and, accordingly, the web.
Das Dokument DE-A-1 075 933 zeigt eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1.Document DE-A-1 075 933 shows a device according to the preamble of claim 1.
Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, eine Vorrichtung eingangs erwähnter Art mit einfachen und bewährten Mitteln so zu verbessern, daß ein exakter Leimauftrag gewährleistet ist und eine Verschmutzung der Bahn unterbleibt.Proceeding from this, it is therefore the object of the present invention to improve a device of the type mentioned at the outset with simple and proven means in such a way that an exact application of glue is ensured and the web is not contaminated.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichenden Merkmale des Anspruchs 1 gelöst.This object is achieved by the characterizing features of claim 1.
Mit diesen Maßnahmen werden die eingangs geschilderten Nachteile vollständig beseitigt. Das Wischtuch nimmt nicht nur die Leimrückstände und Farbrückstände vom Leimzylinder ab, wodurch dieser sauber gehalten und ein exakter punktförmiger Leimauftrag gewährleistet werden, sondern fängt auch die abspritzenden Tröpfchen auf, so daß auch eine hierdurch verursachte Verschmutzung von Bahn bzw. Umgebung unterbleibt. Infolge des Saugvermögens des Wischtuchs ist zu-dem sichergestellt, daß der von diesem aufgenommene Leim auch bei starker Beaufschlagung gehalten wird und dennoch ein geringer Tuchverbrauch gewährleistet ist. Ein weiterer, ganz besonderer Vorteil der erfindungsgemäßen Maßnahmen ist darin zu sehen, daß das Wischtuch auch die einfache Möglichkeit bietet, den Leimzylinder zu befeuchten, womit nicht nur angetrocknete Leimrückstände aufgelöst werden können, sondern auch einem Ablegen von Farbe auf dem Leimzylinder von Anfang an entgegen gewirkt werden kann. Gleichzeitig ergibt sich hierdurch eine Befeuchtung der Bahn, was einen nachfolgenden Falzvorgang erleichtern kann. Außerdem bietet ein befeuchtetes Wischtuch die weitere vorteilhafte Möglichkeit, bei Stillstand des Leimzylinders die Öffnungen der Leimdüsen zu verschließen und ein Antrocknen des Leims zu verhindern.With these measures, the disadvantages described at the outset are completely eliminated. The wipe not only removes the glue residues and paint residues Glue cylinder from which this is kept clean and an exact punctiform application of glue is guaranteed, but also catches the spraying droplets, so that the resulting contamination of the web or the surrounding area is also avoided. As a result of the absorbency of the wipe, it is also ensured that the glue absorbed by the wipe is held even when subjected to heavy loads and a low wipe consumption is nevertheless ensured. Another very special advantage of the measures according to the invention can be seen in the fact that the wipe also offers the simple possibility of moistening the glue cylinder, which not only allows dried glue residues to be dissolved, but also prevents paint from being deposited on the glue cylinder from the start can be knitted. At the same time, this results in moistening of the web, which can facilitate a subsequent folding process. In addition, a moistened wipe offers the further advantageous possibility of closing the openings of the glue nozzles when the glue cylinder is at a standstill and preventing the glue from drying.
Zweckmäßig kann das Wischtuch daher mittels einer der Kontaktstelle mit dem Leimzylinder vorgeordneten Befeuchtungseinrichtung mit Wasser oder dem bei Offsetmaschinen üblichen Feuchtmitteln befeuchtbar sein.The wipe can therefore expediently be moistened with water or the dampening solution customary in offset machines by means of a moistening device arranged upstream of the contact point with the glue cylinder.
Eine weitere zweckmäßige Maßnahme kann darin bestehen, daß das von einer Vorratsrolle ab- und auf eine Speicherrolle aufwickelbare Wischtuch im Bereich zwischen den Rollen von einem vorzugsweise als aufpump-barer Balg ausgebildeten Andrückorgang hinterfaßt ist, welches vorzugsweise während des schrittförmigen Transport des Wischtuchs entlastbar ist. Hierdurch ist sichergestellt, daß auf das vorzugsweise gegenläufig zum Leimzylinder transportierbare Wischtuch während des Transports keine Abstreifkräfte übertragen werden, wodurch die Transportmechanik entlastet wird.A further expedient measure can consist in that the wipe that can be wound up from a supply roll and onto a storage roll in the area between the Rolls from a preferably designed as an inflatable bellows pressing process, which is preferably relieved during the step-by-step transport of the wipe. This ensures that no wiping forces are transferred to the wiping cloth, which can preferably be transported in the opposite direction to the glue cylinder, during which the transport mechanism is relieved.
In weiterer Fortbildung der übergeordneten Maßnahmen können zwei diametral einander gegenüberliegende Wischeinrichtungen vorgesehen sein. Diese Maßnahme ermöglicht eine einfache Drehrichtungsumkehr des Leimzylinders, wobei jeweils nur eine Wischeinrichtung aktiviert zu sein braucht, in schwierigen Fällen aber beide aktiviert sein können. Hinzu kommt, daß sich hierbei auch bei einem Leimzylinder mit zwei Leimdüsenreihen ein zuverlässiger Verschluß sämtlicher Leimdüsen bei Stillstand ermöglichen läßt, in dem beide Wischtücher angestellt werden.In a further development of the superordinate measures, two diametrically opposite wiping devices can be provided. This measure enables a simple reversal of the direction of rotation of the glue cylinder, only one wiping device needing to be activated at a time, but both can be activated in difficult cases. In addition, even with a glue cylinder with two rows of glue nozzles, a reliable closure of all glue nozzles can be made possible at a standstill, in which both wipes are put on.
Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen ergeben sich aus den restlichen Unteransprüchen.Further advantageous refinements and expedient further training result from the remaining subclaims.
Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.
In der Zeichnung zeigen:
- Figur 1
- eine schematische Ansicht einer einem Falztrichter nachgeordneten Querleimeinrichtung und
Figur 2- eine Seitenansicht der zur Querleimeinrichtung nach Figur 1 gehörenden Wischeinrichtung.
- Figure 1
- is a schematic view of a cross gluing device downstream of a former
- Figure 2
- a side view of the wiper device belonging to the cross-gluing device according to FIG. 1.
Der Figur 1 liegt eine über einen Falztrichter 1 geführte Bahn 2 zugrunde, die im Bereich des Falztrichters 1 in zwei parallele Stränge 2a, 2b aufgeteilt wird, welche in Form eines Bahnpakets 2c einem nicht näher dargestellten Falzapparat zugeführt werden, wo Bahnabschnitte hergestellt und diese mit einem Querfalz versehen werden, so daß sich mehrlagige Falzprodukte ergeben. Um eine Heftung der mehrlagigen Falzprodukte zu erübrigen, werden die Stränge 2a, 2b im Bereich jeder Querfalzlinie mittels eines quer zu Bahnlängsrichtung verlaufenden Leimstreifens 3 miteinander verleimt.1 is based on a
Um die Leimstreifen 3 auf die Innenseite, das heißt die dem jeweils anderen Strang zugewandte Seite eines Strangs, aufbringen zu können, ist im dargestellten Ausführungsbeispiel der Strang 2a in Form einer U-förmigen Schleife geführt, in welcher sich eine Querleimeinrichtung befindet. Diese besteht aus einem vom zugeordneten Strang 2a auf einem Winkel von mehr als 90° umschlungenen Leimzylinder 4, der mit einer umfangsseitigen Düsenleiste 5 oder mehreren umfangsseitigen Düsenleisten 5 versehen ist. Diese sind mit entlang einer umfangsseitigen Mantellinie angeordneten Leimdüsen 6 versehen, die im Umschlingungsbereich vom Zylinderinnenraum aus mit Leim beaufschlagbar sind. Jede Leimdüse 6 erzeugt dabei einen punktförmigen Leimauftrag, was die quer zur Bahnlängsrichtung verlaufenden Leimstreifen 3 ergibt. Diese setzen sich praktisch aus mehreren, nebeneinander angeordneten Leimpunkten zusammen, die in Figur 1 angedeutet ist.In order to be able to apply the
Um den Leimzylinder 4 und seine Umgebung saüber zu halten, ist dem Leimzylinder 4 eine Wischeinrichtung 7 zugeordnet, die im Bereich des Ablaufs des Strangs 2a vom Leimzylinder 4 angeordnet ist und deren Aufgabe es ist, den Umfang des Leimzylinders 4 abzuwischen und die beim Ablauf des Strangs 2 vom Leimzylinder 4, das heißt bei der Teilung des Leimauftrags abspritzenden Tröpfchen aufzufangen.In order to keep the
Die Wischeinrichtung 7 enthält, wie am besten aus Figur 2 erkennbar ist, ein von einer Vorratsrolls 8 abwickelbares und auf eine Speicherrolle 9 aufwickelbares, aus Vließ bestehendes Wischtuch 10, das im Bereich zwischen der Vorratsrolle 8 und der Speicherrolle 9 an den Umfang des Leimzylinders 4 andrückbar ist. Hierzu ist das Wischtuch 10 von einem zwischen der Vorratsrolle 8 und der Speicherrolle 9 angeordneten Andrückorgan 11 hinterfaßt. Dieses ist im dargestellten Ausführungsbeispiel als aufpumpbarer Balg ausgebildet, der im aufgepumpten Zustand daS Wischtuch 10 an den Leimzylinder 4 andrückt. Im entlasteten Zustand des Balgs ergibt sich ein leichter Abstand zum Leimzylinder 4, so daß das Wischtuch 10 dabei ohne Belastung transportierbar ist. Das Wischtuch 10, das entgegen der Laufrichtung des Leimzylinders 4 transportiert wird, wird schrittweise transportiert.As can best be seen in FIG. 2, the
Hierzu sind die Speicherrolle 9 schrittweise antreibbar und die Vorratsrolle 8 schrittweise entriegelbar. Gleichzeitig wird das Andrückorgan 11 entlastet.For this purpose, the
Das von Andrückorgan 11 ablaufende Ablauftrumm 10a des Wischtuchs 10 ist ebenso wie der vom Leimzylinder 4 ablaufende Strang 2a vom Leimzylinder 4 weg, das heißt nach radial außen, geführt, wobei sich das vom Andrückorgan 10 ablaufende Ablauftrumm 10a des Wischtuchs und der vom Leimzylinder 4 ablaufende Bereich des Strangs 2a unter Bildung eines Zwickels gegenüberliegen. Das Ablauftrumm 10a des Wischtuchs ist dabei über die Kante des Andrückorgans 11 und ein über diese Kante in Richtung des nach außen laufenden Strangs 2a vorstehendes Umlenkorgan 12 geführt, bevor es auf die bezogen auf den Leimzylinder 4 radial außerhalb des Andrückorgans 11 angeordnete Spreicherrolle 9 aufläuft. Das Umlenkorgan 12 ist im dargestellten Ausführungsbeispiel einfach als an die Halterung des Andrückorgans 11 angeformte Leiste ausgebildet. Im Bereich zwischen dem Andrückorgan 11 und der Speicherrolle 9 ergibt sich somit ein in Richtung des Strangs 2a ausgeknickter Verlauf, das heißt ein in den Zwickel zwischen dem Leimzylinder 4 und dem von diesem ablaufenden Strang 2a eingreifender Verlauf des Ablauftrumms 10a des Wischtuchs. Dieses wischt daher nicht nur Verunreinigungen in Form von bei 13 angedeuteten Leimklecksen vom Umfang des Leimzylinders 4 ab, sondern kann auch insbesondere im Bereich des Ablaufs des Strangs 2a vom Leimzylinder 4 tangential abspritzende Leimtröpfchen 14 auffangen. Der in Form eines großen Umschlingungswinkels um den Leimzylinder 4 herumgeführte Strang 2a wird über eine dem Leimzylinder 4 benachbarte Umlenkrolle 15, welche dem Andrückorgan 11 am Umfang des Leimzylinders 4 vorgeordnet ist, von diesem abgezogen.The discharge run 10a of the
Das Wischtuch 10 ist im dargestellten Ausführungsbeispiel vor seinem Auflauf auf das zugeordnete Andrückorgan 11 und dementsprechend vor der Kontaktstelle mit dem Leimzylinder 4 mit Wasser oder einem bei Offsetmaschinen üblichen Feuchtmittel befeuchtbar. Hierzu ist ein das Wischtuch 10 im Bereich zwischen der Vorratsrolle 8 und dem Andrückorgan 11 hintergreifender Düsenbalken 16 vorgesehen, der mit mehreren, über seiner Länge verteilten Sprühdüsen 17 versehen ist. Die Düsen 17 sind im dargestellten Ausführungsbeispiel mit einem im Düsenbalken 16 vorgesehenen Sammelraum verbunden, der mit Flüssigkeit gefüllt und zur Befeuchtung des Wischtuchs 10 an eine Druckluftquelle angeschlossen wird, wobei die vorhandene Flüssigkeitsfüllung über die Düsen 17 ausgeblasen wird. Die Düsen 17 sind in den Zwickel zwischen dem Andrückorgan 11 und dem auf dieses auflaufenden Wischtuch 10 gerichtet, so daß auch eine Nachführung von Feuchtmittel während des Wischvorgangs möglich ist. Überlichweise erfolgt die Befeuchtung des Wischtuchs während oder kurz vor einem Transportschritt. Zwischen zwei Transportschritten ist nur in besonderen Fällen eine weitere Feuchtmittelzufuhr erforderlich. Um das Feuchtmittel gezielt dem Wischtuch 10 zuzuführen, sind die Düsen 17 von einem Schutzblech 18 unterfaßt, das eine etwa oberhalb der Kontaktstelle zwischen Leimzylinder 4 und Andrückorgan 11 sich befindende Tropfkante aufweist.In the exemplary embodiment shown, the
Die Befeuchtung des Wischtuchs 10 ergibt nicht nur einen besonders guten Reinigungseffekt, sondern erzeugt gleichzeitig auch einen Feuchtigkeitsfilm auf dem Leimzylinder 4, wodurch dem Ablegen von Farbe entgegengewirkt wird und gleichzeitig eine Befeuchtung des Strangs 2a als Falzhilfe erreicht wird.The moistening of the
Die Vorratsrolle 8 wird durch einen Kaster 19 abgetastet, der bei zu Ende gehendem Tuchvorrat ein Signal auslöst. Infolge des nur schrittweise erfolgenden Tuchvorschubs werden jedoch mit einem Wischtuch hohe Standzeiten erreicht. Die zur Bewerkstelligung des Tuchvorschubs vorgesehene Antriebseinrichtung kann automatisch getaktet und zusätzlich von Hand aktivierbar sein. Dasselbe gilt für die Befeuchtungseinrichtung.The
Claims (8)
- A device for applying an adhesive strip extending at right angles to the longitudinal direction to a web, in particular a printed paper web, having a sizing cylinder (4), provided with sizing nozzles (6) disposed along at least one surface line, which rolls on the web and having a cleaning device for the sizing cylinder,
characterised in that the cleaning device comprises a wiping cloth (10) guided by a delivery roller (8) to a storage roller (9), a pressure member (11) for forcing the wiping cloth (10) against the sizing cylinder (4) is disposed between the rollers (8, 9) in the nip between the sizing cylinder (4) and the web (2a) running therefrom,
and in that the strand (10a) of the wiping cloth (10) leaving the pressure member (11) is guided in the direction of the web (2a). - A device according to Claim 1,
characterised in that the wiping cloth (10) can be moistened by means of a moistening device (16, 17) disposed in front of the contact point, which preferably comprises a water supply. - A device according to claim 2,
characterised in that the moistening device comprises a nozzle bar (16) having spray nozzles (17) distributed over the width of the wiping cloth (10). - A device according to one of the preceding Claims,
characterised in that the wiping cloth (10) can be progressively transported and/or can be sporadically moistened. - A device according to one of the preceding Claims,
characterised in that the wiping cloth (10) engages behind a pressure member (11) preferably constructed as an inflatable bellows and can preferably be relieved when transported. - A device according to one of the preceding Claims,
characterised in that the wiping cloth (10) running from the sizing cylinder (4) and the web (2a) running from the sizing cylinder (4) are conveyed away via guide members (12 and 15 respectively) adjacent to one another on the circumference of the sizing cylinder (4). - A device according to one of the preceding Claims,
characterised in that the web (2a) passes from the sizing cylinder (4) over a guide roller (15) adjacent to the sizing cylinder (10), which the wiping device (7) follows in the direction of rotation of the sizing cylinder (4). - A device according to one of the preceding Claims,
characterised in that preferably with a sizing cylinder (4) having two rows of sizing nozzles diametrically opposite one another, two wiping devices (7) diametrically opposite one another are provided, one of which can be activated to wipe the sizing cylinder (4) and both of which can be adjusted to the sizing cylinder (4) in the region of an associated row of sizing nozzles when said sizing cylinder is out of action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89120875T ATE93170T1 (en) | 1988-11-15 | 1989-11-10 | DEVICE FOR APPLYING A STRIP OF GLUE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3838721 | 1988-11-15 | ||
| DE3838721A DE3838721C2 (en) | 1988-11-15 | 1988-11-15 | Device for applying a strip of glue |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0369348A2 EP0369348A2 (en) | 1990-05-23 |
| EP0369348A3 EP0369348A3 (en) | 1991-01-23 |
| EP0369348B1 true EP0369348B1 (en) | 1993-08-18 |
Family
ID=6367239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89120875A Expired - Lifetime EP0369348B1 (en) | 1988-11-15 | 1989-11-10 | Device for applying an adhesive strip |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0369348B1 (en) |
| JP (1) | JPH02182770A (en) |
| AT (1) | ATE93170T1 (en) |
| DE (2) | DE3838721C2 (en) |
| ES (1) | ES2042942T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695179B (en) * | 2021-07-12 | 2022-09-30 | 深圳市欣代光电有限公司 | LED packaging device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1075933B (en) * | 1952-12-18 | 1960-02-18 | Dr William M Scholl | Device for locally, pattern-wise application of adhesive compounds on webs of paper, fabric, felt, plastic films and the like. like |
| GB1080073A (en) * | 1963-02-08 | 1967-08-23 | James Vincent Bailey | Improvements in or relating to wiping systems for printing cylinders |
| US4344361A (en) * | 1979-04-19 | 1982-08-17 | Baldwin-Gegenheimer Corporation | Automatic blanket cylinder cleaner |
| DE3207620C2 (en) * | 1982-03-03 | 1985-07-25 | Albert-Frankenthal Ag, 6710 Frankenthal | Device for applying a strip of glue to a moving material web |
| DE3222335C2 (en) * | 1982-06-14 | 1985-01-03 | Planatolwerk W. Hesselmann, Chemische und Maschinenfabrik für Klebetechnik, GmbH & Co KG, 8201 Rohrdorf | Device for applying an adhesive in the form of transverse gluing onto a web |
| DE3527660A1 (en) * | 1985-08-01 | 1987-02-12 | Hesselmann Planatolwerk H | Method and device for producing multiple-page, folded and bonded layers of sheets |
-
1988
- 1988-11-15 DE DE3838721A patent/DE3838721C2/en not_active Expired - Fee Related
-
1989
- 1989-11-10 DE DE8989120875T patent/DE58905319D1/en not_active Expired - Fee Related
- 1989-11-10 AT AT89120875T patent/ATE93170T1/en not_active IP Right Cessation
- 1989-11-10 ES ES89120875T patent/ES2042942T3/en not_active Expired - Lifetime
- 1989-11-10 EP EP89120875A patent/EP0369348B1/en not_active Expired - Lifetime
- 1989-11-13 JP JP1294757A patent/JPH02182770A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0369348A3 (en) | 1991-01-23 |
| DE58905319D1 (en) | 1993-09-23 |
| ES2042942T3 (en) | 1993-12-16 |
| ATE93170T1 (en) | 1993-09-15 |
| DE3838721A1 (en) | 1990-05-17 |
| EP0369348A2 (en) | 1990-05-23 |
| JPH02182770A (en) | 1990-07-17 |
| DE3838721C2 (en) | 1996-01-18 |
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