EP2398726A2

EP2398726A2 - Drive mechanism for a device for laying a fibrous material web in a leporello fold

Info

Publication number: EP2398726A2
Application number: EP10704765A
Authority: EP
Inventors: Andreas SPRICK-SCHÜTTE
Original assignee: Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Current assignee: Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Priority date: 2009-02-18
Filing date: 2010-02-17
Publication date: 2011-12-28
Also published as: US9061860B2; WO2010094472A3; DE102009009517A1; WO2010094472A2; US20110306482A1

Abstract

In a drive mechanism (8) for a device for laying, in particular an unfolded fibrous material web, in particular a paper web or a corrugated paper web (1), such as a corrugated cardboard web, in a Leporello fold, comprising a pair of opposing rollers (19, 21) that form a passage gap (23) for the fibrous material web and/or define a rotational axis around which said rollers rotate, in particular when the fibrous material web passes through the passage gap, it is provided that the at least two rollers are pivot-mounted such that the rotational axes can be pivoted about the common pendulum axis by a rotational axes roller drive that rotationally drives at least one of the two rollers for delivering the fibrous material web through the passage gap to form the Leporello stacking, and by a pivot drive that has in particular a pendulum axis (P) not coinciding with the rotational axes.

Description

Drive mechanism for a device for laying a fibrous material web in a

fanfold

The invention relates to a drive and folding mechanism for a device for laying a particular unfolded fiber material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web, in a Leporellofaltung.

A corrugated cardboard web is often used for packaging purposes, for example, by laying apart corrugated board layers for cushioning adjacent goods to be laid. A corrugated cardboard cut can be contoured on one or two sides. In a corrugated web contoured on one side, one side is formed by a corrugated paper layer onto which a smooth paper layer is glued to form the other side. It is clear that the corrugated board web can also be superimposed by several flat and wavy paper layers to increase the buffering property.

In order to optimize the packaging process, it is common practice to strip the packaging material from a source of packaging material, which may be either a wound roll or a leprosophila stack. Because of its cuboid outer shape of the Lepor rellofaltstapel is often preferred for space-saving storage property and simple stacking paths. The peeling or unfolding of a Leporellofaltstapel is relatively simple, because no heavily dimensioned pivot bearing for the corrugated roll are necessary. However, the corrugated board webs are usually provided by the papermakers on rolls, so that to create a Leporellofaltstapels the corrugated board web must first be unwound from the endless rollers and folded accordingly leporello.

A device for laying a particular unfolded, endless fibrous material web in a Leporellofaltung, which device comprises a drive mechanism is known from DE 196 44 383 Cl. The known Leporellofaltvorrichtung has a platform on which a fiber material stack can be laid by a stack forming mechanism. The fibrous material web is guided by a fiber material web source via a plurality of rollers to a drive mechanism which is formed by two mutually parallel drive belts. The drive belts are arranged vertically to the platform and guide the Fiber material web vertical to the platform down. In order to achieve the fan-shaped zigzag folding, the vertically oriented drive belts are displaced in the horizontal direction back and forth.

From DE 35 00 766 Al a drive mechanism for a Leporellofaltvorrich- device is known in which a pair of pendulum pair upstream drive roller subtracts a web of material web source and the pendulum rod feeds pair which is to form the Leporellofaltung by a back and forth pivoting movement.

OS 19 64 858 discloses a drive mechanism for a Leporellofaltvorrichtung, in which a draw roller peels off the web, which is fixedly secured to a carrier. About a multi-link chain, a swing arm is driven, the end of the tension roller feeds the web.

All of the above known drive mechanisms for a Leporellofaltvorrichtung have the disadvantage of a considerable space required to realize the drive mechanism by drive belt or a combination of a drive roller and a pivoting mechanism. In addition, in the known drive mechanisms, a high component material expenditure and wear to complain and a large number of components required.

It is an object of the invention to overcome the disadvantages of the prior art, in particular to provide a drive mechanism for a Leporellofaltvorrichtung, with a simple structure as compact as possible construction to be achieved.

This object is solved by the features of claim 1.

Thereafter, a drive and folding mechanism for a device for laying a particular unfolded fiber material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web, provided in a Leporellofaltung. The drive mechanism includes at least a pair of opposing rollers. The rollers form a passage gap for the fiber material web. In this case, the passage gap can be dimensioned such that there is always contact between the fiber material web and the two rollers when the fiber material web is being carried out. The rollers each define an axis of rotation, which axes of rotation do not coincide. The rollers rotate about their own axis of rotation, in particular during passage of the fiber material web through the passage gap. According to the invention, a rotary axis roller drive which rotatably drives at least one of the two rollers for conveying the fiber material web through the passage gap formed by the rollers to the Leporellostapelung, and a pivot drive is provided, which in particular has a pendulum axis not coincident with the axes of rotation. The at least two rollers are mounted so pivotally that they are pivoted back and forth on actuation by the pivot drive, the axes of rotation of the rollers about the common pendulum axis.

With the measure according to the invention, it is possible to significantly reduce the dimension of the drive mechanism in particular so that the entire Leporellofaltvorrichtung, especially in the vertical direction regardless of the desired width of the Leporellstapels to be laid. In addition, it has surprisingly been found that only a single pair of rollers with at least one driven roller is sufficient to realize a Leporellofaltstapel. Due to the significant reduction of the dimension especially in the height direction, the movement amplitudes of the components of the drive mechanism are significantly reduced. Taking into account that corrugated board webs usually have a width of at least 1000 mm, it was found that less air turbulence due to the reduced movement amplitudes are generated by the measure according to the invention and the concomitant reduction in height, whereby the air resistance is reduced and thus to drive the Drive mechanism necessary energy. In addition, it was found that the fibrous material web, in particular in the case of paper webs, is less severely impaired due to the less present air turbulences, the fibrous material web, whereby a more precise Leporellofaltung is possible. In addition, the production speed can be increased when Leporellofalten.

In a preferred embodiment of the invention, the pendulum axis is substantially parallel to the axes of rotation, which allows a simple structural design. Preferably, the pendulum axis is arranged in the region of the passage gap, whereby the height and the dimension of the drive mechanism and the Leporellofaltvorrichtung can be minimized.

In a further development of the invention, the center distances between the pendulum axis and the axes of rotation of the rollers and / or a width of the passage gap remain constant during an entire reciprocating movement of the roller pair. In this way, a precise Leporellofaltung can be achieved. In a preferred embodiment of the invention, connecting lines between the pendulum axis and the respective axes of rotation define an acute or obtuse angle which is greater than 25 °, 30 °, 45 ° or 60 °, preferably approximately equal to 180 °. In this way, it is taught to arrange the pendulum axis as close as possible to the pair of rollers in order to keep the pivoting amplitudes of components of the drive mechanism as small as possible.

In a further development of the invention, the pendulum axis extends transversely to a longitudinal direction or a conveying direction of the fiber material web, in particular perpendicular thereto, through the passage gap.

In a further development of the invention, the pendulum axis extends between the rollers over. Preferably, the pendulum axis extends through the passage gap at substantially equidistant, shortest distances to the at least two rollers. The pendulum axis may be arranged in the region of the fiber material web, in particular parallel thereto, preferably in a plane which is defined by the fiber material web in the region of the passage gap, in particular in the passage gap.

In a further development of the invention, the passage gap defines a delivery direction for the fiber material web leaving the passage gap. The dispensing direction can, with respect to a vertical direction, which corresponds in particular to the gravitational direction and perpendicular to the horizontal direction, when pivoting the at least two rollers a pivot angle sector of at most 180 ° and at least 20 °, preferably between 60 ° and 140 °, go through. The pivoting angle sector thus comprises two maximum angular positions, which can be at most 90 ° and at least 10 ° with respect to the vertical direction. Preferably, the discharge direction is pivoted by 45 ° to 75 ° relative to the vertical direction on both sides.

Preferably, the swivel angle sector is symmetrical to the vertical direction on which the pendulum axis is arranged. The swivel angle sector can be adjusted depending on a distance of the passage gap for storage, in particular to a top sheet of the already laid fiber material web stack, and depending on a width of the Leporellofaltung.

In a preferred embodiment of the invention, the rotary axis roller drive and the pivot drive are coordinated so that when laying the fiber material web in the Leporellofaltung a defined by the passage gap dispensing direction for the fiber material web towards a folding end of the fiber material web stack has, where a next Leporellofalte the Leporellofaltung is to be formed. In this case, the dispensing direction can be defined by parallel tangential directions at opposite circumferential points of the rollers at the shortest distance, wherein in particular the circumferential locations are determined in particular by contact points of the fiber material web on the rollers.

In a preferred embodiment of the invention, the drive mechanism is formed without further roller, without any further mechanical engagement with the fiber material web, between the at least two rollers and the last laid Leporellofalte the Leporellofaltung. It can be provided to provide only a single drive roller for advancing the fiber material web.

In a preferred embodiment of the invention, the pendulum axis is in particular arranged or mounted stationary relative to the support frame of the device or the drive mechanism.

In a preferred embodiment of the invention, the pivot drive has a driven pulley whose axis of rotation preferably coincides with the pendulum axis P. In this case, the pivot drive may have a drive pulley, which in particular be coupled via a power transmission means, such as a toothed belt, with the driven pulley. A connecting rod is articulated via an output connecting point which is eccentric to an axis of rotation of the drive disk and is articulated to the drive shaft via a drive articulation point which is eccentric to the axis of rotation of the drive shaft. Center axis distances of the articulation points are determined such that in a continuous drive rotation of the drive shaft only in one direction of rotation a Pendelschenkbewegung is performed by the drive pulley. Preferably, the center-to-center distance of the output armature point is greater than the center-to-center distance of the drive armature point.

Preferably, the center distance of the Abtriebsanlenkstelle on the drive pulley is adjustable, in particular provided several Abtriebsanlenkstellen particular in the form of holes for receiving coupling pins of the connecting rod to the drive pulley. In a preferred embodiment of the invention, the rollers between fixed operating positions are mutually adjustable and detectable in the operating positions, wherein an operating position set a large distance for threading the fiber material web between the at least two rollers and an operating position a small gap forming the passage gap.

In a preferred embodiment of the invention, a feed of the fiber material web in the longitudinal direction thereof is realized exclusively via the rotary axis rolling drive, in particular via only one driven roller of the roller pair.

In a preferred embodiment of the invention, the rotary axis roller drive has two independently controllable rotary motors, one of which in each case drives one roller of the roller pair.

Preferably, the rotary axis roller drive has a servomotor, in particular for each roller.

In a development of the invention, the driven roller, in particular only the driven roller, is in an essentially positive engagement with the fiber material web, in particular with a surface contour of the fibrous material web.

In a preferred embodiment of the invention, a roller of the roller pair is designed to press the driven roller in a form-locking engagement with a surface contour of the fiber material web, in particular substantially without conveying the fibrous material conveying drive forces in the conveying direction.

In a preferred embodiment of the invention, the driven roller, in particular only the driven roller, an outer contour, in particular a wavy Außenriff- ment, which is particularly adapted to a preferably wavy surface contour of the fiber material web such that contour peaks, in particular peaks, and contour valleys, in particular Wave troughs, the fiber material web substantially complementary to shape with contour valleys, in particular troughs, and contour mountains, especially wave crests, the outer contour of the driven roller come into engagement. In a preferred embodiment of the invention, one of the rollers is designed with a substantially smooth surface, which is embodied in particular with respect to the fiber material web with low friction, preferably by uncoated aluminum.

In a development of the invention, the drive mechanism is provided with a control and / or regulating device which synchronizes the pivoting drive and the rotary axis roller drive.

Furthermore, the invention relates to a method and a device for laying a particular unfolded fiber material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web, in a Leporellofaltung. In this case, the fiber material web is separated from a set for Leporellofaltung fiber material web stack, in particular cut off by a horizontally mounted support plate is retracted from a passive rest position adjacent to the fiber material web stack between an upper and a lower leaflet of Fasermaterialbahnstapels, so that the fiber material web in the region of a folding edge between the upper and the lower leaflet is cut and the folded from the fiber material web stack folded sheet is placed on the support plate.

A device for laying a particular unfolded, endless fibrous material web in a Leporellofaltung is known for example from G 85 20 763. The known device for zigzag folding an infinite material web comprises a tray, which is designed as a lowerable support rake. From the support rake, the folded fiber material web stack is transported away from the laying device. A stacking mechanism is provided, which detects the unfolded fibrous material web via carrier elements and folds into a sequence of zig-zag-shaped superposed leaflets. The folded fibrous material web stack is then cut from the fibrous material web by a horizontally movable table between two leaflets of Leporellostapels is retracted, with a stationary knife is arranged at the same height as the table and realized the separation process in cooperation with the table. This known device and this known method have the disadvantage that the Leporellofaltung must be interrupted during the cutting and restarted, whereby a discontinuous folding operation is acceptable. It is also an object of the invention to improve the known method in that a continuous folding operation without interruption is possible.

This object is solved by the features of claims 29 or 32.

Thereafter, the fibrous material web following the upper leaflet is folded on the support plate retracted in a cutting position for a newly added fiber material web stack, and not just on the usually underlying conveyor belt or rigid storage platform.

In a preferred embodiment of the invention, a stack forming mechanism, in particular the above-mentioned Leporello folding apparatus driving mechanism for folding the unfolded fibrous material web into the fanfolding and the platen positioned in the cutting position are vertically displaceable relative to each other to provide a vertical distance between the stack forming mechanism and to keep an uppermost leaflet of the newly laid fibrous material web stack substantially constant. The topmost leaflet of the newly laid fibrous material web stack is the leaflet that is closest to the stack forming mechanism. The uppermost leaflet may be in direct engagement with low pressure arms which compress the superimposed leaflets.

In a preferred embodiment of the invention, after placing a valley of the fiber material web stack to be relocated, the support plate is moved back horizontally from the cutting position to the rest position in order to strip and transfer an already laid fibrous material web stack to a stationary transport layer, such as a conveyor belt. The return can be realized so quickly that an interruption of the Leporellofaltung does not have to go along.

The invention also relates to a device for laying a particular unfolded fibrous material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web, in a Leporellofaltung. The Leporello folding device according to the invention comprises a transport tray, such as a conveyor belt, on which a fibrous material web stack laid for Leporello folding is laid together, in particular for its further transport away from the Leporello folding device. In addition, the Leporellofaltvorrichtung includes a stacking mechanism for folding the unfolded fiber material web in the Leporello- folding. It should be understood that the stack forming mechanism may be formed by, for example, the above drive mechanism of the present invention. Furthermore, the Leporellofaltvorrichtung has a severing device for separating the fiber material web from the fiber material web stack, wherein the separating device is formed by a horizontally mounted support plate with a knife portion. The support plate can be moved so horizontally from a rest position to a cutting position for separating the fibrous material web from the fiber material web stack that the fibrous material web is cut in the region of a fold between an upper and a lower leaflet of the fibrous material web stack by the knife section and the upper leaflet on the support plate is filed. According to the invention, the stack formation mechanism and the platen are movable relative to each other in the vertical direction such that a vertical distance between the stack forming mechanism and a topmost folded platen of a newly laid fibrous material web stack remains substantially constant.

The knife section is preferably positioned on an edge of the support plate facing the fibrous material web stack. In this case, the blade portion and the support plate can be made of one piece, in particular a piece of metal. Alternatively, a separately manufactured blade section can be fastened to the support plate, in particular to its underside.

For cutting the fibrous material web, the knife section cooperates with a stationary knife block.

In a preferred embodiment of the invention, the relative movement between the stacking mechanism and the platen is realized by the platen being stationary and the stacking mechanism mounted correspondingly for vertical plunging. Alternatively, both can be mounted vertically adjustable.

In a preferred embodiment of the invention, the Leporellofalteinrichtung has a Aufnahmegestellt with at least one vertical side wall at least adjacent to a part of the fold edges of the fiber material web stack. The side wall comprises a slot through which the support plate for retraction can be passed, wherein the side wall in particular vertically displaceable in synchronism with the support plate, so that the slot is always aligned with the support plate horizontally aligned. Furthermore, the invention relates to a device for laying a particular unfolded fiber material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web, in a Leporellofaltung. The Leporellofaltvorrichtung comprises a tray, which is folded down for Leporellofaltung fibrous material web stack especially for its further transport away from the device, and a stack forming mechanism, which folds the fiber material web to a Leporellofaltung and in particular according to the above drive mechanism according to the invention is formed. According to the invention, the Leporellofaltvorrichtung should have two Niederdrückarme which are arranged for alternately depressing adjacent to the respective, opposite fold edges of the folded fiber material stack and substantially vertically on the Fasermate- rialbahnstapel to and from this away.

In a preferred embodiment of the invention, the two depressing arms are arranged adjacent to the respective opposing sheets of the fibrous material web stack for alternate depression and are displaceable substantially vertically toward and away from the fibrous material web stack.

In a preferred embodiment of the invention, the two low-pressure arms are operated by a drive, in particular in each case a drive, wherein in particular the drive has a continuous, driven turntable, the rotational movement is converted by a multi-joint gear in a translational reciprocating motion.

In a further development of the invention, the Leporellofaltvorrichtung has a control and / or regulating device which synchronizes the pivot drive, the rotation axis roller drive, the drive for displacing the stacking mechanism and / or the shelf in the vertical direction and the / the Niederdrückantrieb / e.

In a further development of the invention, the Leporellofaltvorrichtung has a position sensor for determining the rollers of a drive mechanism, in particular the pivot drive, a vertical distance and the Niederdrückarme, the position sensors are connected to a control and / or regulating device.

Such a corrugated paper web is used, inter alia, to be used as packaging material by being pulled in and deformed by a packaging machine in order to form as cushioning packaging material as possible. Further advantages, characteristics and features of the invention will become apparent from the following description of the preferred embodiment of the invention with reference to the accompanying drawings, in which:

Figure 1 is a perspective view of the device according to the invention for

Laying a corrugated cardboard web in a Leporellofaltung;

Figure 2 is a schematic side view of the device according to the invention according to Figure 1 in a first operating position;

Figure 3 is a schematic side view of the device according to the invention according to Figure 1 in a second operating position;

Figure 4 is a schematic side view of the device according to the invention according to Figure 1 in a third operating position;

Figure 5 is a schematic side view of the device according to the invention according to Figure 1 in a fourth operating position;

Figure 6 is a schematic side view of the device according to the invention according to Figure 1 for separating the corrugated cardboard web from the Leporello- folding packet in a first operating position;

Figure 7 is a schematic side view of the device according to the invention according to Figure 6 in a second operating position;

Figure 8 is a schematic side view of the device according to the invention according to Figure 6 in a third operating position; Figure 9 is a schematic side view of the device according to the invention according to Figure 6 in a fourth operating position;

Figure 10 is a schematic side view of a pendulum drive for pivoting a pair of rollers of the stack forming mechanism;

FIG. 11 shows a perspective detailed view of main components of the drive mechanism according to the invention;

Figures 12a and 12b show a cross-sectional view of a separating device in a passive or active state; and

FIG. 13 shows a schematic block diagram for a control and / or regulating device of the device according to the invention.

FIG. 1 shows a device according to the invention for laying an endless corrugated fiberboard web 1, which is unwound from a corrugated fiberboard web roll (not shown) or in a corrugated board production line (not shown) into a fanfolded fold, generally designated 3. The corrugated cardboard web 1 has a smooth side (not shown) and a corrugated side (not shown), wherein the corrugated contour side facing the dark in Figure 1 shown rollers.

The laying device 3 according to the invention comprises as main features a knife plate 5, a stack forming mechanism 7, a conveyor belt 9, a support frame 13 standing on a floor 11, and a roller pair feeder 14 which pulls the corrugated fiberboard web 1 away from the corrugator web roll and feeds it to the stack forming mechanism 7.

As can be seen in Figure 1, the corrugated cardboard web 1 is brought by the stack forming mechanism 7 in a Leporellofaltung, which represents a zig-zag folding and is placed on top of the conveyor belt 9. The stacking mechanism 7 is essentially formed by a drive mechanism 8 according to the invention, which is suitable both for the feed of the corrugated cardboard web 1 as well as their folding in the Leporellofaltung is responsible.

The drive mechanism 8 comprises a roller pair 17 which is formed by two opposing rollers 19, 21.

The rollers 19, 21 define mutually parallel axes of rotation, wherein the rollers 19, 21 are rotatably mounted about their axes. The rollers 19, 21 are rotatably mounted on a common side plate 16, which side plate 16 is pivoted back and forth.

In the figures 2 to 5, the operation of the Leporello stack forming mechanism 7 will now be explained in detail.

The conveyor belt 9 is displaceable downwardly in the vertical direction V relative to the stack forming mechanism 7 to maintain a distance a between a pendulum axis P, which will be described later, and its uppermost leaflet 51 of the Leporellofaltstapels 15 formed by the stack forming mechanism 7 substantially constant.

The essential part of the stack forming mechanism 7 consists of the pair of rollers 17 formed by the smooth roller 19 and the corrugated roller 21. The corrugated roller 21 has a peripheral outer corrugation whose corrugated contour is formed complementary to a one-sided wave contour of the corrugated cardboard web 1. In this way, a substantially slip-free feed of the corrugated cardboard web 1 to the Leporellofaltstapel 15 is possible. For the advance of the corrugated cardboard web 1, only the corrugated roller 21, which is continuously driven in rotation by an electric motor not shown in detail. The smooth roller 19 is driven by its own motor. However, the smooth roller 19 only serves to bring the corrugated contour of the corrugated cardboard web 1 in a form-complementary engagement with the corrugated roller 21. Since the smooth roller 19 has its own, separate drive, the corrugated board web 1 are no acceleration forces, such as frictional forces, communicated in the conveying direction of the smooth roller 19, for example, because of their inertia, so that the single feed forces of the corrugated cardboard web 1 are applied by the corrugated roller 21 , To the frictional forces between the smooth roller 19 and the To keep corrugated cardboard web 1 as low as possible, the smooth roller 19 is made of an uncoated aluminum.

In operation, the smooth roller 19 and the corrugated roller 21 are arranged at a constant distance from one another to form a predetermined passage gap 23, through which the corrugated cardboard web 1 extends. The passage gap 23 is dimensioned such that the corrugated cardboard web 1 is always in contact with both rollers 19, 21 when passing through the passage gap 23. The smooth roller 19 has the task to press the corrugated cardboard web 1 in the form-fitting engagement with the corrugated roller 21.

In order to realize the Leporellofaltung, the roller pair 17 mounted on the side plates 16 is swingable back and forth about a common pendulum axis P, which extends through the passage gap 23 at equal distances from the rollers 19, 21 therethrough. The pendulum axis P is located substantially in a plane defined by the corrugated cardboard sheet 1 in the passage gap 23.

Thus, the pair of rollers 17 rotates about the pendulum axis P, a pendulum drive 87 (not shown) is provided, which can be controlled independently of other drives, such as the rotary drives of the rollers 19, 21, by a control device.

The passage gap 23 defines a discharge direction R relative to the Leporellofaltung, which is essentially defined by the tangential direction of a contact point of the corrugated cardboard sheet 1 to the respective rollers 19, 21. The swivel range sector A is set such that the corrugated web 1 repels continuously from left to right and from right to left from one formed fold edge, thereby preventing too early contact of the folder being laid with the already folded stack 15.

As can be seen in FIGS. 2, 3, 4 and 5, the pendulum drive 87 allows the delivery direction R of the pair of rollers 17 to be pivoted back and forth within a pivoting sector A of approximately 110 °. The interplay of the rocking motion and the feed of the corrugated cardboard sheet 1 realized by the corrugated roller 21 succeeds it is to remain in a structurally simple way, the corrugated cardboard web 1, the desired direction of curvature to form the Leporellofaltung.

In order to mold irreversible fold edges in the Leporellofaltung, a pair of depressing arms 24, 25 is provided, which can be moved in the vertical direction V on the folding stack 15 and away from it, to compress the folding stack 15 with the last-placed convolution.

The depressing arms 24, 25 are operated by a separate drive 33, 35, which generates a continuous rotational movement of a drive pulley 27, 29 in one direction of rotation. A multi-link transmission 31, 33 serves to implement a vertical up and down movement of the depressing arms 23, 25 from the rotational movement of the drive pulley 27, 29.

It is clear that the feed drive of the corrugated roller 21, the pendulum drive 87 and the drive for the low-pressure arms 24, 25 can be synchronized by a control and / or regulating device, not shown.

As can be seen in Figures 2 and 4, the depressing arm 24, 25 reaches its lowest printing position when the stack forming mechanism 7 has completed a Leporellolegung on a folded edge side and is just about to pivot the corrugated cardboard web 1 on the opposite Faltkantenseite. By the pressure of the Niederdrückarms 24, 25, the Leporellolegung is folded exact position, whereby the last folded, top folder 51 is stationary. This fixed fixing of the uppermost folder 51 assists the mutual corrugation engagement of the stacked folders 51, 53. The depressing arms extend over the entire width of the corrugated cardboard web 1 at their end facing the Leporello fold.

Figures 6 to 9 show the operation of a separating device 39, which has the blade plate 5 and is to realize a separation of the corrugated cardboard web 1 of the finished Leporellofaltstapel 15. In Figures 6 to 9, the pendulum drive 87 is also shown in detail for the swinging back and forth of the pair of rollers 17, which pendulum drive 87 consists of a drive pulley 41, which via a toothed belt 43 with a Output disk 45 is connected, which has a coincident with the pendulum axis P pivot bearing axis. The detailed structure of the pendulum drive 87 is shown in FIG.

FIG. 6 shows once more how the Leporello folding stack 15 is formed. Reached the Leporellofaltstapel 15 the desired stack height, as shown for example in Figure 7, the horizontally guided and driven blade plate 5 is performed by a formed in vertical side walls 47, 49 of the support frame 13 slot 52, 54, wherein the support frame 13 facing the end of Knife plate 5 is sharpened as a knife and is suitable for separating the Leporellofaltstapels 15 of the corrugated cardboard web 1.

The knife plate 5 travels between the uppermost folder 51 and the immediately underlying folder 53 and cuts the corrugated board material on the uppermost, with respect to the blade plate 5 distal folding edge 55, so that the uppermost folder 51 is placed on the retracted blade plate 5, as in the Figures 7 and 8 is indicated. Then a new Leporellofaltstapel 57 is no longer stored on the conveyor belt 9, but on the blade plate 5. In this way, the stack forming mechanism 7 can continuously continue to work during the separation process, so without having to make an interruption of the Leporellofaltung. Once the conveyor belt 9 has transported away the finished Leporellofaltstapel 15 and is free for receiving a new folding stack, the conveyor belt 9 moves to the bottom of the blade plate 5, as shown in Figure 9. As soon as the end position of the conveyor belt 9 has been reached, the knife plate 5 moves out of the support frame 13 through the slots 52, 54, whereby the new leaflet stack 57 is transferred to the conveyor belt 9. In this case, the conveyor belt 9 can be tracked by the thickness of the blade plate 5 upwards so that the distance between the stationary pendulum axis P and the uppermost folder 51 remains substantially constant.

It is clear that the support frame 13 and the blade plate 5 are displaced vertically downwards during the Leporellofaltung on the knife blade 5 in order to keep the distance a constant. Alternatively, the stacking mechanism 7 or both the support frame 13, the knife plate 5 and the stack forming mechanism 7 may be vertically displaceable to keep the distance a constant. FIGS. 12a and 12b show the sectioning process and the cooperation of the knife plate 5 with the slot 54 and the side wall 49, respectively. The knife plate 5 has on its underside a knife portion 46 which has a cutting end. The cutting end cooperates with a stationary knife block 48 fixed inwardly on the sidewall, with the knife edge passing the top of the knife block. In this case, the blade section 56 enters the slot 54.

In Figure 10, the pendulum drive 87 is shown in detail, wherein a motor output shaft 61 drives the drive pulley 41 via a connecting rod 63. As can be seen in Figure 10, the center-to-center distance of pivot point 65 on output shaft 61 is less than the center-to-center distance of pivot point 67 on drive pulley 41, thereby providing continuous rotational movement of output shaft 61 in a rotational direction, such as clockwise, in a rocking motion the drive pulley 41 and thus the driven pulley 45 is converted.

As can be seen in FIG. 10, the drive pulley 41 comprises a plurality of holes 69 to 75 which form options for different articulation points 67 in order to set the transmission conversion of the pendulum drive 87.

In Figure 11, a different arrangement of the roller pair 17 and the pendulum axis P is shown. In this embodiment, the pendulum axis P is in contrast to the figures 1 to 9 not within the passage gap 23, but offset from the Leporellofaltung away. Here, connecting lines between the pendulum axis P and the axis of rotation of the rollers 19, 21 form an angle α, which is preferably greater than 25 °. In the roller pair arrangement illustrated in FIGS. 1 to 9, the angle α is 180 °.

The side plates 16 are pivotable about the pendulum axis P, wherein on the side plates 16, the rollers 19, 21 are rotatably mounted. Otherwise, the mode of operation of the roller pair arrangement according to FIG. 11 is the same as the arrangement shown in FIG. In Figure 13, a control and / or regulating device 81 is shown, which is the motor drives 83, 85 for the rollers 19, 21, the pendulum drive 87 and the Niederdrückarmantrieben 89, 91 is connected.

The respective drives 83, 85, 87, 89, 91 include position sensors, which are not shown in detail. Positioning signals are fed to the control and / or regulating device 81 via corresponding communication lines, which are indicated by the arrows directed towards the control and / or regulating device 81, whereby a control routine can be executed. The control and / or regulating device 81 serves to synchronize the movements of the rollers 19, 21 and thus the advance of the corrugated cardboard web 1 and the PendelHin- and -Herbewegung of the roller pair 17 and the movement of the depressing arms 24, 25.

The features disclosed in the foregoing description, the figures and the claims may be of importance both individually and in any combination for the realization of the invention in the various embodiments.

LIST OF REFERENCE NUMBERS

1 corrugated board

3 folding device

5 knife plate

7 stacking mechanism

8 drive mechanism

9 conveyor belt

11 floor

13 support frame

14 roller pair feed

15 Leporello fold stacks

16 side plates

17 pair of rollers

19 smooth roller

21 ribbed roller

23 passage gap

24, 25 low-pressure arms

27, 29 drive pulley

31, 33 multi-link gearbox

34, 35 drive for 24, 25

39 separating device

41 drive pulley

43 toothed belt

45 driven pulley

47, 49 side walls

52, 54 slot

51 top leaflet

53 leaflet

55 top folding edge

57 Leporello fold pile

59 end of the knife 61 engine output shaft

63 connecting rod

65, 67 articulation points

69 to 75 holes

81 Control and / or regulating device

83, 85 motor outputs

87 pendulum drive

89, 91 Low-pressure arm actuators α Angle a Distance

A swing sector

P swing axle

R Dispensing direction

V vertical direction

Claims

claims

A drive mechanism for a device for laying a particularly unfolded fibrous material web, in particular a paper web or a corrugated paper web, such as a corrugated fiberboard web (1), into a Leporellofaltung, comprising a pair (17) opposing rollers (19, 21), the one passage gap ( 23) for the fiber material web and in each case define an axis of rotation about which they rotate through the passage gap (23), in particular when the fiber material web passes through, characterized by at least one of the two rollers (19, 21) for conveying the Fiber material web through the passage gap (23) rotates toward Leporellostapelung rotatably, and a pivot drive, in particular a not coincident with the axes of rotation pendulum axis (P), wherein the at least two rollers (19, 21) are pivotally mounted such that the axes of rotation the common pendulum axis (P) are pivotable back and forth.

2. Drive mechanism according to claim 1, characterized in that the pendulum axis (P) is substantially parallel to the axes of rotation.

3. Drive mechanism according to claim 1 or 2, characterized e e c e e n e e c e s e that the pendulum axis (P) in the region of the passage gap (23) is arranged.

4. Drive mechanism according to one of the preceding claims, characterized in that during a total reciprocating motion of the roller pair (17) center distances between the pendulum axis (P) and the axes of rotation of the rollers (19, 21) and / or a width of the passage gap constant remains / s.

5. Drive mechanism according to one of the preceding claims, characterized in that connecting lines between the pendulum axis (P) and the respective axes of rotation define an acute or obtuse angle greater than 25 °, 30 °, 45 ° or 60 °, preferably approximately equal to 180 ° , is.

6. Drive mechanism according to one of the preceding claims, characterized in that extending the pendulum axis (P) transversely to a longitudinal direction or conveying direction of the fiber material web, in particular perpendicular thereto, through the passage gap (23) therethrough.

7. Drive mechanism according to one of the preceding claims, characterized in that the pendulum axis (P) extends between the rollers (17) past.

8. Drive mechanism according to one of the preceding claims, characterized in that extending the pendulum axis (P) through the passage gap (23) therethrough in substantially equidistant, shortest distances to the at least two rollers (19, 21).

9. Drive mechanism according to one of the preceding claims, characterized in that the pendulum axis (P) is arranged in the region of the fiber material web, in particular parallel to, preferably in a plane through the fiber material web in the region of the passage gap (23), in particular in the passage gap ( 23).

10. Drive mechanism according to one of the preceding claims, characterized ekennz g ekennz that the passage gap (23) defines a discharge direction (R) for the passage gap (23) leaving fibrous material web, which dispensing direction (R) with respect to a vertical direction (V), in particular corresponds to the gravitational direction, during pivoting of the at least two rollers (19, 21) a Schwenkwinkelsektor (A) of at most 180 ° and at least 20 °, preferably between 60 ° and 140 °, passes.

11. Drive mechanism according to claim 10, characterized in that the pivot angle sector (A) is symmetrical to the vertical direction (V), on which the pendulum axis (P) is arranged.

12. Drive mechanism according to claim 10 or 11, characterized gekennzei chnet that the Schwenkwinkelsektor (A) is adjustable depending on a distance of the passage gap (23) as an upper leaflet (51) of the fiber material stack and a width of Leporellofaltung.

13. Drive mechanism according to one of the preceding claims, characterized in that the rotary axis roller drive and the pivot drive are coordinated such that when laying the fibrous material web through the passage gap (23) defined discharge direction (R) for the fiber material web points towards a folding end of the fiber material web stack at which a next Leporellofalt of the Leporellofaltung is to be formed.

14. Drive mechanism according to claim 13, characterized in that the dispensing direction (R) by parallel tangential directions at the shortest distance opposite circumferential locations of the rollers (19, 21) is defined, in particular the circumferential locations in particular by contact points of the fiber material web on the rollers (19 , 21).

15. Drive mechanism according to one of the preceding claims, characterized in that it is formed between the at least two rollers (19, 21) and the Leporellofaltung stacked on a tray without further roller, in particular without further mechanical engagement with the fiber material web.

16. Drive mechanism according to one of the preceding claims, characterized in that the pivot drive (87) has a driven pulley (45) whose axis of rotation with the pendulum axis (P) coincides, and / or the pendulum axis in particular relative to a support frame (13) of the device is stationary.

17. Drive mechanism according to claim 16, characterized in that the pivot drive (87) has a drive pulley (41), which in particular via a power transmission means, such as a toothed belt (43) is coupled to the driven pulley (45), wherein a connecting rod (63) via a to an axis of rotation of the drive pulley (41) eccentric Abtriebsanlenkstelle the drive pulley (41) is articulated and via an axis of rotation of a Drive shaft eccentric drive articulation point is articulated to the drive shaft, wherein center distances of the Anlenk- points (65, 67) are set such that in a continuous drive rotation of the drive shaft in one direction only a pendulum pivoting movement of the drive pulley (41) is executed.

18. Drive mechanism according to claim 17, characterized in that the center axis distance of the Abtriebsanlenkstelle is greater than the center axis distance of the Anlenksanlenkstelle.

19. Drive mechanism according to claim 17 or 18, characterized gekennzei chnet, that the center axis of the Abtriebsanlenkstelle on the drive pulley (41) is adjustable, in particular a plurality of Abtriebsanlenkstellen particular in the form of holes (69 to 75) for receiving coupling pins of the connecting rod (63) are provided on the drive pulley (41).

20. Drive mechanism according to one of the preceding claims, characterized in that the rollers (19, 21) between fixed operating positions are mutually adjustable and detectable in the operating positions, wherein an operating position a large distance for threading the fiber material web between the at least two rollers (19, 21) and an operating position to define a small, the passage gap (23) forming distance.

21. Drive mechanism according to one of the preceding claims, characterized in that a feed of the fiber material web is realized in the longitudinal direction exclusively via the rotation axis roller drive.

22. Drive mechanism according to one of the preceding claims, characterized in that the rotary axis roller drive has two independently controllable rotary motors, of which one each drives a roller (19, 21) of the roller pair (17).

23. Drive mechanism according to one of the preceding claims, characterized in that the rotary axis roller drive has a servomotor, in particular for each roller (19, 21).

24. Drive mechanism according to one of the preceding claims, characterized i c hn et that the driven roller (21), in particular only the driven roller (21), is in a substantially positive engagement with the fiber material web, in particular with a surface contour of the fiber material web.

25. Drive mechanism according to one of the preceding claims, characterized in that a roller (19) of the roller pair (17) is adapted to press the driven roller in a form-locking engagement with a surface contour of the fibrous material web, in particular substantially without the fibrous material conveyor conveying forces in Conveying direction.

26. Drive mechanism according to one of the preceding claims, characterized in that the driven roller (21), in particular only a driven roller (21), an outer contour, in particular a wave-shaped outer corrugation, which in particular adapted to a preferably wavy surface contour of the fiber material web in such a form is that contour peaks, in particular peaks, and contour valleys, in particular troughs, the fiber material web substantially complementary shape with contour valleys, in particular troughs, and contour mountains, in particular crests, the outer contour of the driven roller (21) engage.

27. Drive mechanism according to one of the preceding claims, characterized in that one of the rollers (19) is designed with a substantially smooth surface, which is designed in particular friction with respect to the fiber material web, preferably formed by uncoated aluminum.

28. Drive mechanism according to one of the preceding claims, characterized in that it comprises a control and / or regulating device (81) which synchronizes the pivot drive (87) and the rotation axis roller drive.

29. A method for laying a particular unfolded fibrous material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web (1), in a Leporellofaltung, wherein the fibrous material web is separated from a set for Leporellofaltung fiber material web stack by adjacent a horizontally mounted support plate from a passive rest position the fibrous material web stack between an upper and lower leaflet (51, 53), in particular two folded supersheets (51), the fiber material web stack is retracted, so that the fibrous material web is cut in the region of a folding edge between the upper and the lower leaflet (53) and the upper folded sheet (51) separated from the fibrous material web stack is placed on the support plate, characterized in that the fibrous material web following the upper folded sheet (51) rests on the support plate retracted into a cutting position for a new fiber to be laid Aterialbahnstapel is folded.

30. The method according to claim 29, characterized in that a stack forming mechanism (7), in particular a trained according to one of the claims drive mechanism 1 to 28, for folding the unfolded fiber material web in the Leporellofaltung and lying in the cutting position of the support plate in the vertical direction (V) relative be moved to each other to maintain a vertical distance (V) between the stack forming mechanism (7) and an uppermost leaflet of the newly added fiber material web stack substantially constant.

31. The method according to claim 29 or 30, characterized in that after laying a portion of the newly added fiber material web stack, the support plate is extended from the cutting position to the rest position horizontally back to an already laid fiber material web stack on a stationary transport tray, such as a conveyor belt (9 ), to hand over.

32. Device for laying a particular unfolded fibrous material web, in particular a paper web or a corrugated paper web, such as a corrugated cardboard web (1), in a Leporellofaltung, comprising a transport tray, such as a conveyor belt (9) on which a Leporellofaltung laid fiber material web stack in particular for the further transport of which is collapsed away from the device, and a stacking mechanism (7) for folding the unfolded fibrous material web into the fanfolding, and severing means (39) for separating the fibrous material web from the fibrous material web stack, the severing means (39) being defined by a horizontally laid support plate and a knife section is formed and wherein the support plate for separating the fibrous material web of the fibrous material web stack is horizontally displaceable such that the fibrous material web in the region of a folding edge between an upper and lower leaflet (51, 53), in particular two superscript leaflets, the fibrous material web stack through the knife section is cut and the top folder (51) is placed on the support plate, characterized in that the stack forming mechanism (7) and the support plate in the vertical direction (V) are mounted relative to each other such that a Ve The distance (V) between the stack forming mechanism (7) and the uppermost leaflet of a newly added fiber material web stack remains substantially constant.

33. Apparatus according to claim 32, characterized in that the knife portion is positioned on a fiber material web stack facing edge of the support plate.

34. Apparatus according to claim 32 or 33, characterized i t chne that the blade portion and the support plate are made of one piece, in particular a piece of metal.

35. Device according to one of claims 32 to 34, characterized ichnet that is stored for the realization of the relative movement of the stack forming mechanism and the platen of the stack forming mechanism for a vertical adjusting movement.

36. Device according to one of claims 32 to 34, characterized gekennzei chnet that it comprises a receiving frame with at least one vertical side wall (47, 49) at least adjacent to a part of the folded edges of the fiber material web stack, wherein the side wall (47, 49) has a slot (47 52, 54) through which the support plate can be guided for retraction, whereby the side wall (47, 49) is synchronized. chron is displaced with the support plate, so that the slot (52, 54) is always aligned with the support plate horizontally aligned.

37. Device for laying a particularly unfolded fibrous material web, in particular a paper web or a corrugated paper web, such as a corrugated fiberboard web (1), into a Leporellofaltung, comprising a tray on which a set for Leporellofaltung fiber material web stack is folded away especially for its further transport away from the device, and a stack forming mechanism (7) which folds the fibrous material web into a Leporello fold, and more particularly comprises a drive mechanism formed according to any one of claims 1 to 28, characterized in that it comprises two depressing arms (24, 25) adjacent to each for alternately depressing arranged opposite fold edges of the folded fiber material web stack and are substantially vertically displaceable on the fiber material web stack to and from this.

38. Apparatus according to claim 37, characterized in that the two depressing arms (24, 25) for alternately pressing adjacent to the respective opposite fold edges of the fibrous material web stack are arranged and substantially vertically on the fiber material web stack to and away from this displaced.

39. The apparatus of claim 37 or 38, characterized i geknetze that the two Niederdrückarme (24, 25) by a drive, in particular in each case a drive, are operated, in particular, the drive has a continuously driven hub whose rotational movement through a multi-link gear (31, 33) is converted into a translational reciprocating motion.

40. Device according to one of claims 37 to 39, characterized in that it comprises a control and / or regulating device (81), the pivot drive (87), the rotation axis roller drive and a drive for displacing the stack forming mechanism (7) and / or the shelf in the vertical direction (V) and the / the Niederdrückarmantrieb / e (89, 91) synchronized.

41. Device according to one of claims 37 to 40, characterized in that it comprises a position sensor for determining the position of rollers (17) of a drive mechanism, a vertical distance and the depressing arms (24, 25), wherein the position sensors with a control and / or control device (81) are connected.