EP0901976A2 - Arrangement of rollers in a folding apparatus of a rotary web printing press - Google Patents

Arrangement of rollers in a folding apparatus of a rotary web printing press Download PDF

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Publication number
EP0901976A2
EP0901976A2 EP98112876A EP98112876A EP0901976A2 EP 0901976 A2 EP0901976 A2 EP 0901976A2 EP 98112876 A EP98112876 A EP 98112876A EP 98112876 A EP98112876 A EP 98112876A EP 0901976 A2 EP0901976 A2 EP 0901976A2
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EP
European Patent Office
Prior art keywords
roller
rollers
pull
web
arrangement according
Prior art date
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Granted
Application number
EP98112876A
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German (de)
French (fr)
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EP0901976A3 (en
EP0901976B1 (en
Inventor
Paul Emmet Bredenberg
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Goss International Americas LLC
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Heidelberger Druckmaschinen AG
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
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Publication of EP0901976A3 publication Critical patent/EP0901976A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B65H45/221—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement incorporating folding triangles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/10—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web
    • B65H23/105—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web and controlling web tension

Definitions

  • the invention relates to an arrangement of rollers in a folder Web rotary printing machine.
  • the invention relates to an arrangement of Rolls for feeding a plurality of printed webs or strands as one multilayered web to form a pair of draw rollers, which are located above a former in one Folder of a web-fed rotary printing press is located.
  • a variety of printed webs or web strands is usually over an appropriate number of merging rollers guided around the strands to be arranged one on top of the other before they form a pair of pulling rollers as a multilayered web are fed, which above a former for the longitudinal folding of the multilayer Path is arranged.
  • the pull rolls include a driven metal roll, usually a steel roller, and a non-driven rubber or urethane roller, which is pressed against the driven metal roller with an adjustable force to the Friction between the layered web and the driven metal roller increases change, thereby regulating the tension of the layered web before this passed the former.
  • the merging rollers and the pulling rollers which are located on top of the former, arranged so that the layered web at an angle to the nip of the Pull rollers is performed. Therefore, the layered web either wraps around both Pull rollers or it wraps around the circumference of one of the pull rollers while it is running other pull roller only touched peripherally.
  • European patent application EP 0 747 312 A1 discloses a folder which has one Arrangement of merging and take-off rollers for feeding at least two Covers webs as a multi-ply web to a feed roller that overlies a former is arranged for folding the layered web.
  • the stratified Web of the feed roller fed at an angle, the feed roller by a single guide roller is formed which is not in contact with any other roller and which therefore no regulation of the web tension possible.
  • US 5,398,604 discloses a pull roll assembly which is a driven, rotatable in one Frame-mounted transport roller and an associated pull roller with a removable Includes sleeve, which is made of elastic material.
  • the press roll is rotatable in pivoted arms mounted and can by means of a pneumatic actuator brought into contact with the conventionally designed driven transport roller become.
  • Another object of the present invention is to prevent the appearance of wrinkles and to eliminate other undesirable irregularities in the printed product, due to the radius effect when transporting a layered, multilayered web caused the nip of a pair of pull rollers that are above one Folding former for longitudinal folding of the layered web is located.
  • a Arrangement of rollers in a folder of a web-fed rotary printing press Variety of merging rollers to run along a variety of incoming strands to move a line that is substantially tangent to the plurality of Merging rollers runs, and thereby form a multi-layer web, and furthermore a first and a second pull roller, both with a coating provided with elastic material and arranged so that the multilayered web through a nip is guided, which is formed between the pull rollers and in is substantially tangent to each of the draw rolls.
  • An advantage of the arrangement of the rollers according to the invention is that they are one precise and safe transport of the layered, multilayered web to and via one subordinate former, which leads to a higher accuracy of Longitudinal fold leads, which is carried out on the layered web when this over the The former is guided.
  • the strands 2a, 2b, 2c, 2d are e.g. B. with different images in associated (not shown) printing units printed, the folder seen in the direction of the strands 2a, 2b, 2c, 2d are connected upstream.
  • the guide rollers 4a, 4b, 4c, 4d are preferably non-driven guide rollers, as they are known from conventional folders and used in them.
  • the merging rollers 4a, 4b, 4c, 4d can also be rollers of one or more electric motors (not shown) individually or in pairs are driven.
  • the merging rollers 4a, 4b, 4c, 4d preferably consist of an inelastic material, for example steel or aluminum, can also with a layer of elastic material, such as rubber or urethane, be covered.
  • the merging rollers 4a, 4b, 4c, 4d are like this arranged that each of the strands 2a, 2b, 2c, 2d is guided along a line 6 which in Fig. 1 is indicated by dashed lines and which is substantially tangential to the Merging rollers 4a, 4b, 4c, 4d runs.
  • they are Guide rollers 4a, 4b, 4c, 4d aligned so that the circumferential lines 8a, 8b, 8c, 8d, where the strands 2a, 2b, 2c, 2d each make contact with the associated one Lose guide roller 4a, 4b, 4c, 4d, essentially along line 6 are arranged which are substantially tangential to each of the merging rollers 4a, 4b, 4c, 4d extends so that the multilayer web 2 essentially along the Line of contact 6 runs.
  • the first pull roller 12 and the second pull roller 14 are like this arranged that the line of contact 6 is substantially in the middle of the gap 10th located and a line 16 through the centers of the first draw roller 12 and second pull roller 14 runs, is substantially perpendicular to the line of contact 6.
  • the pull rollers 12, 14 are arranged in such a way that the multi-layer Web 2 runs tangentially to the first and second pull rollers 12, 14 without to wrap around the circumference of one of the pull rollers 12, 14 when the web 2 passes through the Middle of the nip 12 is transported.
  • the first pull roller 12 is a driven roller with a core or body 18 which is connected to a covering 20 made of elastic material, such as rubber or urethane, is provided.
  • the coating or covering 20 is preferably made by an endless Formed sleeve with adhesive or by means of a schematically indicated Notch connection 22 can be connected to the core 18.
  • the second pull roller 14 is preferably of the same design as the first Pull roller 12 and has a core or body 24 of inelastic material, preferably Steel or aluminum, and a covering or coating 26 made of elastic Material bonded to the body 24 with adhesive or a notch 22 connected is.
  • the coating 26 of the second pull roller 14 also preferably consists of a continuous rubber or polyurethane sleeve.
  • the second draw roller 14 is one non-driven roller which is rotatably supported in pivotable arms 28.
  • the pivotable arms 28 may be by means of a known actuator, for example a pneumatic cylinder 32 to be rotated about an axis 30 to the second Pull roller 14 in and out of contact with the first pull roller 12.
  • a pneumatic cylinder 32 to be rotated about an axis 30 to the second Pull roller 14 in and out of contact with the first pull roller 12.
  • first and second pull rollers 12, 14 and the straight and symmetrical transport of the layered web 2 through the nip 10 are all superimposed strands 2a, 2b, 2c, 2d, which form the layered web 2, with transported through the nip 10 at substantially the same speed.
  • the symmetrical deformation of the elastic coatings 20 ensures and 26 of the first and second pull rolls 12, 14 for a substantially constant one Surface speed of the two coatings 20, 26 in total Contact area 34a, 34b, in which the coatings 20, 26 each in contact with the multilayer web 2 are.
  • the multilayer web 2 After the multilayer web 2 has passed the nip 10, it becomes one conventional former 36 and a further pair of pull rollers 40 out for longitudinally folding the web 2 under the former 36.
  • the first and second pull rollers 12, 14 are preferably on top of the Folder 36 arranged, the arrangement of the first and the second Pull roller 12, 14 is preferably placed over the former 36 so that the multilayer Web 2 the nip 10 tangent to the two pull rollers 12, 14 and in leaves essentially tangential to the upper plane 38 of the former 36.
  • the Merging rollers 4a, 4b, 4c, 4d, the first and second pull rollers 12, 14 and Upper level 38 of the former 36 are preferably arranged so that the multilayer Path 2 moves along the line of contact 6, certain angular deviations be acceptable from the line of contact. This depends on the specific application and the execution of the folder. For example, the angle at which the multilayer web 2 in the nip 10 between the first and the second Pull roller 12, 14 enters from the direction of the line of contact 6 e.g. deviate by ⁇ 3 °. In the same way, the angle between the web 2, which leaves the nip 10, and the line of contact 6 and / or between the line of contact 6 and the upper one The plane 38 of the former 36 also moves in a range of approximately ⁇ 3 °.
  • roller assembly 1 it is also possible to roll the roller assembly 1 according to the present invention in to use other sections of a folder.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Rotary Presses (AREA)
  • Advancing Webs (AREA)

Abstract

The device has first and second drawing-in rollers (12,14) and uniting rollers (4a-d). These are positioned so that a multi-layered printed material train (2) extends along a line (6), which is mainly tangential to the drawing-in rollers. A folder funnel (36) near the drawing-in rollers has an upper plane (38) extending along the line. The drawing-in rollers have a core of inelastic material, and a jacket of elastic material.

Description

Die Erfindung betrifft eine Anordnung von Walzen in einem Falzapparat einer Rollenrotationsdruckmaschine. Insbesondere betrifft die Erfindung eine Anordnung von Walzen zum Zuführen einer Vielzahl von bedruckten Bahnen oder Bahnsträngen als eine mehrlagige Bahn zu einem Zugwalzenpaar, das sich oberhalb eines Falztrichters in einem Falzapparat einer Rollenrotationsdruckmaschine befindet.The invention relates to an arrangement of rollers in a folder Web rotary printing machine. In particular, the invention relates to an arrangement of Rolls for feeding a plurality of printed webs or strands as one multilayered web to form a pair of draw rollers, which are located above a former in one Folder of a web-fed rotary printing press is located.

In einem Falzapparat, der mit einer oder mehreren Rollenrotationsdruckmaschinen verbunden ist, wird eine Vielzahl bedruckter Bahnen oder Bahnstränge üblicherweise über eine entsprechende Anzahl von Zusammenführwalzen geführt, um die Stränge übereinander anzuordnen, bevor diese als mehrlagige Bahn einem Zugwalzenpaar zugeführt werden, welches oberhalb eines Falztrichters zum Längsfalzen der mehrlagigen Bahn angeordnet ist.In a folder with one or more web-fed rotary presses is connected, a variety of printed webs or web strands is usually over an appropriate number of merging rollers guided around the strands to be arranged one on top of the other before they form a pair of pulling rollers as a multilayered web are fed, which above a former for the longitudinal folding of the multilayer Path is arranged.

In herkömmlichen Falzapparaten umfassen die Zugwalzen eine angetriebene Metallwalze, normalerweise eine Stahlwalze, und eine nichtangetriebene Gummi- oder Urethanwalze, die mit einer regulierbaren Kraft gegen die angetriebene Metallwalze gepreßt wird, um die Reibung zwischen der geschichteten Bahn und der angetriebenen Metallwalze zu verändern, und dadurch die Spannung der geschichteten Bahn zu regulieren, bevor diese den Falztrichter passiert. Aufgrund ihrer kompakten und platzsparenden Ausführung sind die Zusammenführwalzen und die Zugwalzen, die sich oben auf dem Falztrichter befinden, so angeordnet, daß die geschichtete Bahn in einem Winkel zum Einzugsspalt der Zugwalzen geführt wird. Daher wickelt sich die geschichtete Bahn entweder um beide Zugwalzen oder sie wickelt sich um den Umfang von einer der Zugwalzen, während sie die andere Zugwalze nur peripher berührt. Aufgrund des sogenannten Radiuseffekts werden die Stränge der geschichteten Bahn, die über die Außenseite der umwickelten Zugwalze geführt werden, schneller abgezogen als diejenigen, die über die Innenseite der Walze geführt werden, weil ihr Abstand vom Mittelpunkt der Walze größer ist. Wenn die Stränge danach zur Innenseite einer nachfolgenden Walze geführt werden, z.B. die Zugwalzen hinter dem Falztrichter, können Falten und andere unerwünschte Unregelmäßigkeiten der bedruckten und gefalzten Produkte auftreten, welche die Qualität der bedruckten Produkte ernstlich beeinträchtigen können.In conventional folders, the pull rolls include a driven metal roll, usually a steel roller, and a non-driven rubber or urethane roller, which is pressed against the driven metal roller with an adjustable force to the Friction between the layered web and the driven metal roller increases change, thereby regulating the tension of the layered web before this passed the former. Because of their compact and space-saving design the merging rollers and the pulling rollers, which are located on top of the former, arranged so that the layered web at an angle to the nip of the Pull rollers is performed. Therefore, the layered web either wraps around both Pull rollers or it wraps around the circumference of one of the pull rollers while it is running other pull roller only touched peripherally. Due to the so-called radius effect the strands of the layered web that extend over the outside of the wrapped draw roller are peeled off faster than those that run over the inside of the roller be guided because their distance from the center of the roller is greater. If the strands then led to the inside of a subsequent roller, e.g. the pull rollers behind the former, folds and other undesirable irregularities can occur Printed and folded products occur which affect the quality of the printed products can seriously affect.

Die europäische Patentanmeldung EP 0 747 312 A1 offenbart einen Falzapparat, der eine Anordnung von Zusammenführ- und Abzugswalzen zum Zuführen von mindestens zwei Bahnen als eine mehrlagige Bahn an eine Einzugwalze umfaßt, die über einem Falztrichter zum Falzen der geschichteten Bahn angeordnet ist. In diesem Apparat wird die geschichtete Bahn der Einzugswalze in einem Winkel zugeführt, wobei die Einzugwalze durch eine einzelne Führungswalze gebildet wird, die mit keiner anderen Walze in Kontakt ist und die daher keine Regulierung der Bahnspannung ermöglicht.European patent application EP 0 747 312 A1 discloses a folder which has one Arrangement of merging and take-off rollers for feeding at least two Covers webs as a multi-ply web to a feed roller that overlies a former is arranged for folding the layered web. In this apparatus the stratified Web of the feed roller fed at an angle, the feed roller by a single guide roller is formed which is not in contact with any other roller and which therefore no regulation of the web tension possible.

US 5,398,604 offenbart eine Zugwalzenanordnung, die eine angetriebene, drehbar in einem Rahmen gelagerte Transportwalze sowie eine zugehörige Zugwalze mit einer abnehmbaren Hülse umfaßt, die aus elastischem Material besteht. Die Preßwalze ist drehbar in schwenkbaren Armen gelagert und kann mittels eines pneumatischen Betätigungselements mit der herkömmlich ausgeführten angetriebenen Transportwalze in Kontakt gebracht werden.US 5,398,604 discloses a pull roll assembly which is a driven, rotatable in one Frame-mounted transport roller and an associated pull roller with a removable Includes sleeve, which is made of elastic material. The press roll is rotatable in pivoted arms mounted and can by means of a pneumatic actuator brought into contact with the conventionally designed driven transport roller become.

Es ist eine Aufgabe der vorliegenden Erfindung, eine Anordnung von Walzen in einem Falzapparat einer Rollenrotationsdruckmaschine zur Verfügung zu stellen, die das Auftreten einer ungleichmäßigen Spannung zwischen den jeweiligen Einzelsträngen einer geschichteten Bahn eliminiert, wenn die geschichtete Bahn durch einen zwischen einem Zugwalzenpaar gebildeten Walzenspalt geführt wird.It is an object of the present invention to provide an arrangement of rolls in one To provide folder of a web-fed rotary printing press that the Occurrence of an uneven tension between the respective single strands stratified web eliminated when the stratified web is replaced by one between one Pull roller pair formed nip is performed.

Eine weitere Aufgabe der vorliegenden Erfindung ist es, das Auftreten von Falten und anderen unerwünschten Unregelmäßigkeiten in dem bedruckten Produkt zu eliminieren, die durch den Radiuseffekt beim Transport einer geschichteten, mehrlagigen Bahn durch den Walzenspalt eines Zugwalzenpaares verursacht werden, das sich oberhalb eines Falztrichters zum Längsfalzen der geschichteten Bahn befindet. Another object of the present invention is to prevent the appearance of wrinkles and to eliminate other undesirable irregularities in the printed product, due to the radius effect when transporting a layered, multilayered web caused the nip of a pair of pull rollers that are above one Folding former for longitudinal folding of the layered web is located.

Gemäß einem ersten Ausführungsbeispiel der vorliegenden Erfindung umfaßt eine Anordnung von Walzen in einem Falzapparat einer Rollenrotationsdruckmaschine eine Vielzahl von Zusammenführwalzen, um eine Vielzahl von eintreffenden Strängen entlang einer Linie zu bewegen, die im wesentlichen tangential zu der Vielzahl von Zusammenführwalzen verläuft, und dadurch eine mehrlagige Bahn zu bilden, und weiterhin eine erste und eine zweite Zugwalze, die beide mit einer Beschichtung aus elastischem Material versehen und so angeordnet sind, daß die mehrlagige Bahn durch einen Walzenspalt geführt wird, der zwischen den Zugwalzen gebildet wird und im wesentlichen tangential zu jeder der Zugwalzen verläuft.According to a first embodiment of the present invention, a Arrangement of rollers in a folder of a web-fed rotary printing press Variety of merging rollers to run along a variety of incoming strands to move a line that is substantially tangent to the plurality of Merging rollers runs, and thereby form a multi-layer web, and furthermore a first and a second pull roller, both with a coating provided with elastic material and arranged so that the multilayered web through a nip is guided, which is formed between the pull rollers and in is substantially tangent to each of the draw rolls.

Ein Vorteil der erfindungsgemäßen Anordnung der Walzen besteht darin, daß sie einen präzisen und sicheren Transport der geschichteten, mehrlagigen Bahn zu und über einen nachgeordneten Falztrichter ermöglicht, was zu einer höheren Genauigkeit der Längsfalzung führt, die an der geschichteten Bahn ausgeführt wird, wenn diese über den Falztrichter geführt wird.An advantage of the arrangement of the rollers according to the invention is that they are one precise and safe transport of the layered, multilayered web to and via one subordinate former, which leads to a higher accuracy of Longitudinal fold leads, which is carried out on the layered web when this over the The former is guided.

Die Erfindung wird in der folgenden Beschreibung eines bevorzugten Ausführungsbeispiels im Zusammenhang mit den beigefügten, nachstehend erklärten Zeichnungen näher erläutert.The invention is preferred in the following description Embodiment in connection with the accompanying, explained below Drawings explained in more detail.

Es zeigen:

Fig. 1
eine schematische Seitenansicht einer beispielhaften Walzenanordnung der vorliegenden Erfindung mit einem Falztrichter und Zugwalzen, die sich hinter dem Falztrichter befinden;
Fig. 2
eine mehr ins Detail gebende Querschnittsansicht der in der Walzenanordnung gemäß eines Ausführungsbeispiels der vorliegenden Erfindung verwendeten Zugwalzen.
Show it:
Fig. 1
is a schematic side view of an exemplary roller assembly of the present invention with a former and draw rollers, which are located behind the former;
Fig. 2
a more detailed cross-sectional view of the pull rollers used in the roller assembly according to an embodiment of the present invention.

Wie in Fig. 1 gezeigt, umfaßt eine Walzenanordnung 1 zum Zuführen einer geschichteten oder mehrlagigen Bahn 2, einschließlich zweier, dreier oder mehrerer übereinanderliegender bedruckter Einzelstränge 2a, 2b, 2c, 2d, zu einem Falztrichter 36 in einem (nicht abgebildeten) Falzapparat einer Druckmaschine eine Vielzahl von Zusammenführ- oder Abzugswalzen 4a, 4b, 4c, 4d, über welche die jeweiligen eintreffenden Stränge 2a, 2b, 2c, 2d geführt werden. Die Stränge 2a, 2b, 2c, 2d werden z. B. mit unterschiedlichen Bildern in zugehörigen (nicht abgebildeten) Druckwerken bedruckt, die dem Falzapparat in Laufrichtung der Stränge 2a, 2b, 2c, 2d gesehen vorgeschaltet sind.As shown in Fig. 1, a roller assembly 1 for feeding a layered one or multilayer web 2, including two, three or more printed single strands 2a, 2b, 2c, 2d lying one above the other to form a former 36 in a (not shown) folder of a printing machine a variety of Merge or take-off rollers 4a, 4b, 4c, 4d, over which the respective arriving strands 2a, 2b, 2c, 2d are performed. The strands 2a, 2b, 2c, 2d are e.g. B. with different images in associated (not shown) printing units printed, the folder seen in the direction of the strands 2a, 2b, 2c, 2d are connected upstream.

Die Zusammenführwalzen 4a, 4b, 4c, 4d sind vorzugsweise nichtangetriebene Leitwalzen, wie sie aus herkömmlichen Falzapparaten bekannt sind und in diesen verwendet werden. Alternativ können die Zusammenführwalzen 4a, 4b, 4c, 4d auch Walzen sein, die von einem oder mehreren (nicht abgebildeten) Elektromotoren einzeln oder paarweise angetrieben werden. Die Zusammenführwalzen 4a, 4b, 4c, 4d bestehen vorzugsweise aus einem unelastischen Material, zum Beispiel Stahl oder Aluminium, können jedoch auch mit einer Schicht aus elastischem Material, wie beispielsweise Gummi oder Urethan, überzogen sein.The guide rollers 4a, 4b, 4c, 4d are preferably non-driven guide rollers, as they are known from conventional folders and used in them. Alternatively, the merging rollers 4a, 4b, 4c, 4d can also be rollers of one or more electric motors (not shown) individually or in pairs are driven. The merging rollers 4a, 4b, 4c, 4d preferably consist of an inelastic material, for example steel or aluminum, can also with a layer of elastic material, such as rubber or urethane, be covered.

Wie in Fig. 1 weiterhin gezeigt, sind die Zusammenführwalzen 4a, 4b, 4c, 4d so angeordnet, daß jeder der Stränge 2a, 2b, 2c, 2d entlang einer Linie 6 geführt wird, die in Fig. 1 durch gestrichelte Linien angedeutet ist und die im wesentlich tangential zu den Zusammenführwalzen 4a, 4b, 4c, 4d verläuft. In anderen Worten sind die Zusammenführwalzen 4a, 4b, 4c, 4d so ausgerichtet, daß die Umfangslinien 8a, 8b, 8c, 8d, an denen die Stränge 2a, 2b, 2c, 2d jeweils den Kontakt mit der zugehörigen Zusammenführwalze 4a, 4b, 4c, 4d verlieren, im wesentlichen entlang der Linie 6 angeordnet sind, die im wesentlichen tangential zu jeder der Zusammenführwalzen 4a, 4b, 4c, 4d verläuft, so daß die mehrlagige Bahn 2 im wesentlichen entlang der Berührungslinie 6 verläuft. As further shown in Fig. 1, the merging rollers 4a, 4b, 4c, 4d are like this arranged that each of the strands 2a, 2b, 2c, 2d is guided along a line 6 which in Fig. 1 is indicated by dashed lines and which is substantially tangential to the Merging rollers 4a, 4b, 4c, 4d runs. In other words, they are Guide rollers 4a, 4b, 4c, 4d aligned so that the circumferential lines 8a, 8b, 8c, 8d, where the strands 2a, 2b, 2c, 2d each make contact with the associated one Lose guide roller 4a, 4b, 4c, 4d, essentially along line 6 are arranged which are substantially tangential to each of the merging rollers 4a, 4b, 4c, 4d extends so that the multilayer web 2 essentially along the Line of contact 6 runs.

Die mehrlagige Bahn 2, die beispielsweise, wie oben beschrieben, durch die übereinanderliegenden Stränge 2a, 2b, 2c, 2d gebildet wird, wird danach zu einem Walzenspalt 10 geführt, der zwischen einer ersten Zugwalze 12 und einer zugehörigen zweiten Zugwalze 14 gebildet ist.The multilayered web 2, for example, as described above, by the overlying strands 2a, 2b, 2c, 2d is then formed into one Roll nip 10 performed between a first pull roller 12 and an associated one second pull roller 14 is formed.

Wie in Fig. 1 gezeigt, sind die erste Zugwalze 12 und die zweite Zugwalze 14 so angeordnet, daß sich die Berührungslinie 6 im wesentlichen in der Mitte des Spalts 10 befindet und eine Linie 16, die durch die Mittelpunkte der ersten Zugwalze 12 und der zweiten Zugwalze 14 verläuft, im wesentlichen senkrecht zur Berührungslinie 6 steht. In anderen Worten sind die Zugwalzen 12, 14 in der Weise angeordnet, daß die mehrlagige Bahn 2 jeweils tangential zu der ersten und der zweiten Zugwalze 12, 14 verläuft, ohne sich um den Umfang einer der Zugwalzen 12, 14 zu wickeln, wenn die Bahn 2 durch die Mitte des Walzenspalts 12 transportiert wird.As shown in Fig. 1, the first pull roller 12 and the second pull roller 14 are like this arranged that the line of contact 6 is substantially in the middle of the gap 10th located and a line 16 through the centers of the first draw roller 12 and second pull roller 14 runs, is substantially perpendicular to the line of contact 6. In in other words, the pull rollers 12, 14 are arranged in such a way that the multi-layer Web 2 runs tangentially to the first and second pull rollers 12, 14 without to wrap around the circumference of one of the pull rollers 12, 14 when the web 2 passes through the Middle of the nip 12 is transported.

In einem Ausführungsbeispiel der vorliegenden Erfindung, das in Fig. 2 dargestellt ist, ist die erste Zugwalze 12 eine angetriebene Walze mit einem Kern oder Körper 18, der mit einem Belag 20 aus elastischem Material, wie beispielsweise Gummi oder Urethan, versehen ist. Die Beschichtung oder der Belag 20 wird vorzugsweise durch eine endlose Hülse gebildet, die mit Klebstoff oder mittels einer schematisch angedeuteten Kerbverbindung 22 mit dem Kern 18 verbunden sein kann.In one embodiment of the present invention illustrated in FIG. 2 the first pull roller 12 is a driven roller with a core or body 18 which is connected to a covering 20 made of elastic material, such as rubber or urethane, is provided. The coating or covering 20 is preferably made by an endless Formed sleeve with adhesive or by means of a schematically indicated Notch connection 22 can be connected to the core 18.

Die zweite Zugwalze 14 ist vorzugsweise von derselben Ausführung wie die erste Zugwalze 12 und hat einen Kern oder Körper 24 aus unelastischem Material, vorzugsweise Stahl oder Aluminium, und einen Belag oder eine Beschichtung 26 aus elastischem Material, die mit Klebstoff oder mittels einer Kerbverbindung 22 mit dem Körper 24 verbunden ist. In derselben Weise, wie bereits für die erste Zugwalze 12 beschrieben, besteht die Beschichtung 26 der zweiten Zugwalze 14 ebenfalls vorzugsweise aus einer durchgehenden Gummi- oder Polyurethanhülse. Wenngleich die Ausführung der beiden Zugwalzen 12, 14 vorzugsweise identisch ist, ist es auch möglich, daß diese aus unterschiedlich stark nachgiebigem Material in der Weise gebildet werden, daß die Verformung der Beschichtung 20 der ersten Walze 12 die Verformung der Beschichtung 26 der zweiten Walze 14 widerspiegelt.The second pull roller 14 is preferably of the same design as the first Pull roller 12 and has a core or body 24 of inelastic material, preferably Steel or aluminum, and a covering or coating 26 made of elastic Material bonded to the body 24 with adhesive or a notch 22 connected is. In the same way as already described for the first pull roller 12, the coating 26 of the second pull roller 14 also preferably consists of a continuous rubber or polyurethane sleeve. Although the execution of the two Pull rollers 12, 14 is preferably identical, it is also possible that these from differently flexible material are formed in such a way that the Deformation of the coating 20 of the first roller 12 the deformation of the coating 26 of the second roller 14 reflects.

In einem Ausführungsbeispiel der vorliegenden Erfindung ist die zweite Zugwalze 14 eine nichtangetriebene Walze, die drehbar in schwenkbaren Armen 28 gelagert ist. Die schwenkbaren Arme 28 können mittels eines bekannten Betätigungselements, zum Beispiel einem Pneumatikzylinder 32, um eine Achse 30 gedreht werden, um die zweite Zugwalze 14 in und außer Kontakt mit der ersten Zugwalze 12 zu bringen. Durch Variieren des Drucks in dem Pneumatikzylinder 32 des Betätigungsorgans kann die Andruckkraft zwischen den beiden Zugwalzen 12, 14 verändert werden, um den Zug oder die Spannung der geschichteten Bahn 2 zu regulieren.In one embodiment of the present invention, the second draw roller 14 is one non-driven roller which is rotatably supported in pivotable arms 28. The pivotable arms 28 may be by means of a known actuator, for example a pneumatic cylinder 32 to be rotated about an axis 30 to the second Pull roller 14 in and out of contact with the first pull roller 12. By varying of the pressure in the pneumatic cylinder 32 of the actuator can be the pressing force between the two pull rollers 12, 14 can be changed to the pull or the tension to regulate the layered path 2.

Aufgrund der Ausführung der ersten und der zweiten Zugwalze 12, 14 und des geraden und symmetrischen Transports der geschichteten Bahn 2 durch den Walzenspalt 10 werden alle übereinanderliegenden Stränge 2a, 2b, 2c, 2d, welche die geschichtete Bahn 2 bilden, mit einer im wesentlichen gleichen Geschwindigkeit durch den Walzenspalt 10 transportiert. Darüber hinaus sorgt die symmetrische Verformung der elastischen Beschichtungen 20 und 26 der ersten und der zweiten Zugwalze 12, 14 für eine im wesentlichen konstante Oberflächengeschwindigkeit der beiden Beschichtungen 20, 26 im gesamten Kontaktbereich 34a, 34b, in dem die Beschichtungen 20, 26 jeweils in Kontakt mit der mehrlagige Bahn 2 sind.Due to the design of the first and second pull rollers 12, 14 and the straight and symmetrical transport of the layered web 2 through the nip 10 are all superimposed strands 2a, 2b, 2c, 2d, which form the layered web 2, with transported through the nip 10 at substantially the same speed. In addition, the symmetrical deformation of the elastic coatings 20 ensures and 26 of the first and second pull rolls 12, 14 for a substantially constant one Surface speed of the two coatings 20, 26 in total Contact area 34a, 34b, in which the coatings 20, 26 each in contact with the multilayer web 2 are.

Nachdem die mehrlagige Bahn 2 den Walzenspalt 10 passiert hat, wird sie zu einem herkömmlichen Falztrichter 36 und einem weiteren Zugwalzenpaar 40 geführt, das sich zum Längsfalzen der Bahn 2 unter dem Falztrichter 36 befinden kann. Wie aus Fig. 1 zu ersehen ist, sind die erste und die zweite Zugwalze 12, 14 vorzugsweise oben auf dem Falztrichter 36 angeordnet, wobei die Anordnung der ersten und der zweiten Zugwalze 12, 14 über dem Falztrichter 36 vorzugsweise so angelegt ist, daß die mehrlagige Bahn 2 den Walzenspalt 10 tangential zu den beiden Zugwalzen 12, 14 und im wesentlichen tangential zur oberen Ebene 38 des Falztrichters 36 verläßt. Wenngleich die Zusammenführwalzen 4a, 4b, 4c, 4d, die erste und die zweite Zugwalze 12, 14 und die obere Ebene 38 des Falztrichters 36 vorzugsweise so angeordnet sind, daß die mehrlagige Bahn 2 sich entlang der Berührungslinie 6 bewegt, können gewisse Winkelabweichungen von der Berührungslinie akzeptabel sein. Dies hängt von der speziellen Anwendung und der Ausführung des Falzapparates ab. So kann zum Beispiel der Winkel, mit dem die mehrlagige Bahn 2 in den Walzenspalt 10 zwischen der ersten und der zweiten Zugwalze 12, 14 eintritt, von der Richtung der Berührungslinie 6 z.B. um ± 3° abweichen. In gleicher Weise kann der Winkel zwischen der Bahn 2, die den Walzenspalt 10 verläßt, und der Berührungslinie 6 und/oder zwischen der Berührungslinie 6 und der oberen Ebene 38 des Falztrichters 36 sich ebenfalls in einem Bereich von etwa ± 3° bewegen.After the multilayer web 2 has passed the nip 10, it becomes one conventional former 36 and a further pair of pull rollers 40 out for longitudinally folding the web 2 under the former 36. As shown in Fig. 1 is seen, the first and second pull rollers 12, 14 are preferably on top of the Folder 36 arranged, the arrangement of the first and the second Pull roller 12, 14 is preferably placed over the former 36 so that the multilayer Web 2 the nip 10 tangent to the two pull rollers 12, 14 and in leaves essentially tangential to the upper plane 38 of the former 36. Although the Merging rollers 4a, 4b, 4c, 4d, the first and second pull rollers 12, 14 and Upper level 38 of the former 36 are preferably arranged so that the multilayer Path 2 moves along the line of contact 6, certain angular deviations be acceptable from the line of contact. This depends on the specific application and the execution of the folder. For example, the angle at which the multilayer web 2 in the nip 10 between the first and the second Pull roller 12, 14 enters from the direction of the line of contact 6 e.g. deviate by ± 3 °. In the same way, the angle between the web 2, which leaves the nip 10, and the line of contact 6 and / or between the line of contact 6 and the upper one The plane 38 of the former 36 also moves in a range of approximately ± 3 °.

Ebenso ist es auch möglich, die Walzenanordnung 1 gemäß der vorliegenden Erfindung in anderen Abschnitten eines Falzapparates zu verwenden. It is also possible to roll the roller assembly 1 according to the present invention in to use other sections of a folder.

LISTE DER BEZUGSZEICHENLIST OF REFERENCES

11
WalzenanordnungRoller arrangement
22nd
Geschichtete oder mehrlagige BahnLayered or multilayered web
2a, 2b, 2c, 2d2a, 2b, 2c, 2d
BahnsträngeWeb strands
4a, 4b, 4c, 4d4a, 4b, 4c, 4d
ZusammenführwalzenMerging rollers
66
BerührungslinieContact line
8a, 8b, 8c, 8d8a, 8b, 8c, 8d
UmfangslinienCircumferential lines
1010th
WalzenspaltNip
1212th
Erste ZugwalzeFirst pull roller
1414
Zweite ZugwalzeSecond pull roller
1616
Linieline
1818th
Kerncore
2020th
Belagcovering
2222
KerbverbindungNotch connection
2424th
Kerncore
2626
BeschichtungCoating
2828
Schwenkbare ArmeSwiveling arms
3030th
Achseaxis
3232
PneumatikzylinderPneumatic cylinder
34a, 34b34a, 34b
KontaktbereichContact area
3636
FalztrichterFormer
3838
Obere EbeneUpper level
4040
ZugwalzenPull rollers

Claims (7)

Walzenanordnung in einem Falzapparat einer Rollenrotationsdruckmaschine mit einer ersten eine Beschichtung (20) aus elastischem Material aufweisenden ersten Zugwalze (12) sowie einer eine Beschichtung (26) aus elastischem Material aufweisenden zweiten Zugwalze (14), die zusammen einen Walzenspalt (10) bilden, durch welchen hindurch eine aus einer Vielzahl von durch Zusammenführwalzen (4a, 4b, 4c, 4d) übereinander geführten Bahnsträngen (2a, 2b, 2c, 2d) gebildete Bedruckstoffbahn (2) hindurch geführt wird,
dadurch gekennzeichnet,
die Zusammenführwalzen (4a, 4b, 4c, 4d) sowie die erste und die zweite Zugwalze (12, 14) in der Weise angeordnet sind, daß die mehrlagige Bahn (2) entlang einer Linie (6) verläuft, die im wesentlichen tangential zu der ersten und der zweiten Zugwalze (12, 14) angeordnet ist.Roller arrangement in a folder of a web-fed rotary printing press with a first pulling roller (12) having a coating (20) made of elastic material and a second pulling roller (14) having a coating (26) made of elastic material, which together form a roller gap (10) through which a printing material web (2) formed by a plurality of web strands (2a, 2b, 2c, 2d) guided one above the other by guide rollers (4a, 4b, 4c, 4d) is passed,
characterized,
the merging rollers (4a, 4b, 4c, 4d) and the first and second drawing rollers (12, 14) are arranged in such a way that the multilayered web (2) runs along a line (6) which is essentially tangential to that first and the second pull roller (12, 14) is arranged. Walzenanordnung nach Anspruch 1,
dadurch gekennzeichnet,
daß diese weiterhin einen Falztrichter (36) umfaßt, der nahe der ersten und der zweiten Zugwalze (12, 14) angeordnet ist, wobei der Falztrichter (36) eine obere Ebene (38) aufweist und in der Weise angeordnet ist, daß die obere Ebene (38) sich im wesentlichen entlang der Linie (6) erstreckt.Roller arrangement according to claim 1,
characterized,
that it further comprises a former (36) located near the first and second draw rollers (12, 14), the former (36) having an upper plane (38) and being arranged such that the upper plane (38) extends substantially along line (6). Walzenanordnung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die erste und zweite Zugwalze (12, 14) einen Kern (18, 24) aus unelastischem Material und eine durchgehende Beschichtung (20, 26) aus elastischem Material aufweisen. Roller arrangement according to claim 1 or 2,
characterized,
that the first and second pull rollers (12, 14) have a core (18, 24) made of non-elastic material and a continuous coating (20, 26) made of elastic material. Walzenanordnung nach Anspruch 3,
dadurch gekennzeichnet,
daß die erste und die zweite Zugwalze (12, 14) im wesentlichen identisch ausgebildet sind.Roller arrangement according to claim 3,
characterized,
that the first and the second pull roller (12, 14) are essentially identical. Walzenanordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß von der ersten und zweiten Zugwalze (12, 14) mindestens eine drehbar in einem Paar schwenkbarer (30) Arme (28) gelagert ist, wobei die schwenkbaren (30) Arme (28) mit einer Betätigungseinrichtung (32) zum Verschwenken der Arme (28) in der Weise verbunden sind, daß die erste Zugwalze (12) an die zweite Zugwalze (14) anstellbar ist.Roller arrangement according to one of the preceding claims,
characterized,
that at least one of the first and second pull rollers (12, 14) is rotatably mounted in a pair of pivotable (30) arms (28), the pivotable (30) arms (28) having an actuating device (32) for pivoting the arms ( 28) are connected in such a way that the first pull roller (12) can be adjusted to the second pull roller (14). Walzenanordnung nach Anspruch 5,
dadurch gekennzeichnet,
daß die Anstellkraft zwischen der ersten Zugwalze (12) und der zweiten Zugwalze (14) durch die Betätigungseinrichtung (32) regulierbar ist.Roller arrangement according to claim 5,
characterized,
that the contact force between the first pull roller (12) and the second pull roller (14) can be regulated by the actuating device (32). Walzenanordnung nach Anspruch 5 oder 6,
dadurch gekennzeichnet,
daß die Betätigungseinrichtung einen Pneumatikzylinder (32) umfaßt.Roller arrangement according to claim 5 or 6,
characterized,
that the actuating device comprises a pneumatic cylinder (32).
EP98112876A 1997-09-09 1998-07-10 Arrangement of rollers in a folding apparatus of a rotary web printing press Revoked EP0901976B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US926058 1997-09-09
US08/926,058 US5904094A (en) 1997-09-09 1997-09-09 Roller arrangement in a folding apparatus of a web-fed rotary printing press

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EP0901976A3 EP0901976A3 (en) 1999-11-03
EP0901976B1 EP0901976B1 (en) 2007-06-06

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EP (1) EP0901976B1 (en)
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Also Published As

Publication number Publication date
US5904094A (en) 1999-05-18
EP0901976A3 (en) 1999-11-03
DE59814022D1 (en) 2007-07-19
EP0901976B1 (en) 2007-06-06
JPH11147669A (en) 1999-06-02

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