DE102010008906A1 - Corrugated paper/board production unit has a main line for producing corrugated paper with single-sided or manifold corrugation and two or more single-sided corrugated-paper machines - Google Patents

Abstract

The plant has a main line for producing single or multiple shaft corrugated board, which has two or more single-sided corrugated board machines, respective unwinding devices and a heating plate unit with respective glueing unit. In a different height relative to the main line, an overlying auxiliary line section is provided with a further unwinding device, a further gluing unit and a further heating plate unit in order to produce single-sided corrugated cardboard parallel to the main line.

Description

Technical part

The The present invention relates to a plant or line for manufacturing of corrugated cardboard. In particular, the invention relates to optimizations at the beginning of the line for the production of corrugated cardboard, where the sheets or sheets of smooth cardboard transformed and be joined to form a multilayer composite, the smooth Arches and corrugated arches that alternate and glued together.

Technical background of the invention

For the production of corrugated cardboard rolls are used smooth cardboard boxes which are subject to a number of transformations to a corrugated board one or more layers, d. H. corrugated with one or more layers Cartons, or so-called "waves", to form where each corrugated layer between two smooth layers, or so-called Blankets, is included.

A Line or plant for the production of corrugated cardboard typically has a number of unwinders for a variety smooth roll cartons, one or more single-sided corrugators or so-called "single facer", each of which a pair of corrugating rolls between which a sheet smoothes Cartons are fed by the interlocking Wave crests of the two opposite Riffelwalzen is corrugated. The single-sided corrugator also has a so-called press roll on to a smooth bow or a blanket to glue on the sheet corrugated cardboard, on the tips An adhesive has been applied in advance. Typically, there are two or several single-sided corrugators in line in series arranged, and each is two unwinding for the rolls belong to smooth cartons. That way Layers of unilateral corrugated board formed, each of a smooth Ceiling and formed by a layer of corrugated cardboard boxes that go along the tips of the corrugated web are glued together.

Provided one arranges several single-sided corrugators in series, can at the exit from the plant a corrugated board with a variable Number of corrugated layers obtained, d. H. a variable number of Waves. The number of layers depends on the number of one-sided Corrugated cardboard machines arranged in series. The single ones Components resulting from the connection of a smooth layer or ceiling and consist of a corrugated layer must be with each other glued and provided with another layer of smooth cardboard, which forms the second outer cover.

To This purpose is the one-sided corrugators and the unwinding for the supply to this one Heizplatteneinheit, so-called "Double Facer ", subordinate, d. H. a machine, over the one or more layers are fed, respectively formed by a wavy bow and a smooth bow, and in front of which a gluing plant is arranged on all the tops of the one-sided layers of corrugated cardboard, the heating plate unit be fed, applying an adhesive. This Unit is also fed a track smooth cardboard box which at the exit from the heating plates the second outer cover the corrugated cardboard forms. The Double Facer will be the different ones Components (one-sided corrugated layers with respective smooth layers, which are glued on one of the two sides) along a path fed on which they are against each other and against one underneath lying heated surface (the so-called heating plates) be pressed. The residence time, the contact pressure and the temperature are chosen so that the product by squeezing on one side is not damaged, on the other side However, a mutual bonding of the different superimposed lying layers is ensured.

The at the exit from the heating plates obtained continuous web is the dry end of the line, or so-called "dry end", fed where the material is cut and the length is provided with grooves and by means of cuts in the transverse direction in a large number of bows is divided and in which the Bows are stacked. This part of the line or plant has one or more cutting and Rillstationen, which the Divide the web into a series of longitudinal stripes, of which each according to the desired folding lines on the final Corrugated sheets are grooved. The bows be behind by means of a section of corrugated strips in the transverse direction the cutting and scoring station receive and one or more stacking devices fed.

Conventionally, a corrugated board manufacturing line has a plurality of single-faced corrugated board machines and can produce a sheet of multi-layer corrugated board, the number of corrugated arcs (corrugations) being equal to the number of single-sided corrugated board machines. In the basic design, the production line has two single-sided corrugators and five unwinds of as many cardboard rolls, so that the plant can produce a continuous web corrugated composite board consisting of a first smooth outer cover, a second smooth outer cover, two inner corrugated sheets and one between the two corrugated sheets inserted smooth dividing sheet is formed. However, the arrangement may be more complex, and along the line For example, more than two single-sided corrugators may be provided in series to form composite web corrugated cartons having a greater number of corrugated layers, ie shafts.

In many cases there is a need to over a certain operating period of the plant (normally in working three shifts per day) to make a single-faced corrugated board, d. H. which is formed by a single layer or corrugated web, the between an upper outer ceiling and a lower outer ceiling is placed. If this happens, the system works in a restricted way Mode, and some of the machines in it remain inactive. A This type of train requires the activation of a single-sided corrugated cardboard machine in place of two (or more). On the other hand, the production batches are relatively small, and In the course of one and the same working shift, it may therefore be necessary Its bows are corrugated cardboard with a single shaft and with several waves in a row. Because for everyone Section of the facility requires the presence of an operator is, it means that over the entire period, in the plant produces a simple cardboard, d. H. with a single wave, part of the responsible staff is not is busy, but must be present to the plant in the previous and subsequent manufacturing step to operate when all single-sided corrugators in operation are located. Besides the disadvantage that the one-sided corrugator machine or one-sided corrugators except the first one is resting or stand still, this represents a further disadvantage.

Summary of the invention

According to one Aspect serves the invention to a plant for the production of To realize corrugated board, one or more of the problems of conventional Completely or partially releases systems.

task An embodiment of the invention is the provision a facility that makes greater use of the line and responsible for their supervision and control Staff allows. In particular, it is the task of one Embodiment of the invention to provide a plant which is particularly flexible and capable of being flexible Produce corrugated board with a single shaft or with multiple shafts, with reduced changeover times from one operating mode to the other others and with an optimized use of both the competent Personals as well as the machines making up the line.

In In one embodiment, the plant has a main line with at least two single-sided corrugators and respective ones Unwinding and a Heizplatteneinheit on. In a different height, preferably above this main line, is an auxiliary line or auxiliary line section with an unwinding device and another heating plate unit.

In In some embodiments, the system further provides a Cutting and scoring station, a sheeter and a series of Conveyors to the cardboard line coming from the main line cut into sheets, which are then placed in one or more stacking devices be stacked.

A take second cutting and scoring station and a second cross cutter the coming of the auxiliary line section track and cut them in single bows. The two cutting and creasing stations and the two cross-cutters may advantageously be in be arranged at two different heights. The from the Auxiliary line section of incoming web corrugated cardboard boxes produced by the second cutting and scoring station and the second cross cutter in Bows has been divided, can be another stacking device fed in series with and next to the stacking device or the stacking devices is arranged, that of the main line is or is.

• – zumindest eine erste einseitige Wellpappenmaschine mit zumindest einer ersten Abwickelvorrichtung und einer zweiten Abwickelvorrichtung, um der ersten einseitigen Wellpappenmaschine eine erste Kartonbahn und eine zweite Kartonbahn zuzuführen;
• – zumindest eine zweite einseitige Wellpappenmaschine mit zumindest einer dritten Abwickelvorrichtung und einer vierten Abwickelvorrichtung, um der zweiten einseitigen Wellpappenmaschine eine dritte Kartonbahn und eine vierte Kartonbahn zuzuführen;
• – zumindest eine fünfte Abwickelvorrichtung für eine fünfte Kartonbahn; ein erstes Leimwerk, um Klebstoff auf den Spitzen aufzutragen, die von der ersten einseitigen Wellpappenmaschine und der zweiten einseitigen Wellpappenmaschine an der zweiten und vierten Kartonbahn hergestellt wurden;
• – dem Leimwerk nachgeordnet eine erste Heizplatteneinheit, um die Kartonbahnen, die aus der ersten und aus der zweiten Riffelwalzeneinheit kommen, miteinander zu vereinen;
• – in einer relativ zu der ersten Heizplatteneinheit unterschiedlichen Höhe eine weitere Abwickelvorrichtung für eine weitere Kartonbahn, ein weiteres Leimwerk und eine weitere Heizplatteneinheit.

According to one embodiment, the plant comprises:

• At least one first single-sided corrugated board machine having at least a first unwinding device and a second unwinding device for feeding a first board web and a second board web to the first single-sided corrugated board machine;
• At least one second single-sided corrugator machine having at least a third unwinding device and a fourth unwinding device for feeding a third board web and a fourth board web to the second single-sided corrugated board machine;
• At least a fifth unwinding device for a fifth board web; a first gluing unit for applying adhesive to the tips made by the first single-sided corrugator and the second single-sided corrugator on the second and fourth board webs;
• A first heating plate unit arranged downstream of the gluing unit in order to unite the board webs coming from the first and from the second corrugating roller unit;
• - In a relative to the first Heizplatteneinheit different height another unwinding device for another board web, another gluing unit and another Heizplatteneinheit.

With an arrangement of this kind, the plant can produce a corrugated board with at least two waves ie, the corrugated cardboard of the combination of two sheets or arches, which is connected to three sheets of smooth carton, which form two outer ceilings and an intermediate arc which separates the two corrugated arches from each other. In this case, all the machines of the system work with the exception of the other heating plate unit and the other unwinding device as well as the further gluing unit, which is arranged between the unwinding device and the heating plates. Since the further unwinding device, the gluing unit and the other heating plates are in a different height relative to the other parts of the system, the operators in this way can prepare the rollers and the further unwinding device, so that a rapid transition from the production of corrugated cardboard Multiple waves are possible for the production of two sheets of simple corrugated cardboard, wherein the first sheet is made using the lower level heating plates and the second sheet using the other high-height heating plates.

There the plants of this kind over most of the time Corrugated cardboard with unilateral wave and only over a very limited period double-walled corrugated board (or at least Mehrwelle) produce, with the Arrangement according to the invention an advantage in matters extensive use of the machines, even if an auxiliary unwinding device, a Hilfsleimwerk and a Hilfsheizplatteneinheit needed become. It should also be understood that the units used in arranged relative to the main line of different heights are, and in particular the Hilfsheizplatteneinheit opposite the main heating plate unit of lower efficiency could be. While the latter namely must be so dimensioned that they are at least a double layer corrugated boxes, the auxiliary hot plate unit becomes always used to produce single-sided corrugated board, and therefore can lower performance and smaller Have dimensions and be cheaper. Also the Cutting and creasing section and the stacking section can be used with machines smaller dimensions and / or lower performance will be realized.

The Possibility that the main line more than two-sided Has corrugated machines, for example, a cardboard with triple wave or even with more than three wavy layers, is not excluded. In this case, the advantage is over a guideline section in relation to the main line different Height, even bigger, because the amount of cardboard with triple shaft, by the plant with the manufacture of cardboard Double shaft and one-sided shaft is much smaller. Therefore, can the plant in this case easily from the production a one-sided board web with triple shaft on the production a double shaft railway together with the production of a Rail be converted with unilateral wave. In the first Case remain the units or machines that are in relative to the baseline different levels are arranged inactive while the three one-sided corrugated cardboard machines three corrugated the heating plates Feed the sheets together with the lower ceiling. In the second Operating mode, the three single-sided corrugators still remain all active, but two lead the hotplate unit of Main line unilateral corrugated webs together with a blanket, while the third one-sided corrugator machine a corrugated Track with unilateral shaft with a blanket forming the guideline section is supplied to the means of the white direct heating plate unit and the further Glue the cardboard web with unilateral wave is completed by the second ceiling by means of Hilfsabwickelvorrichtung is supplied.

As clearly shown below, allows the arrangement according to the invention, the simplification of the passage the various cardboard sheets, so that these in the temporarily inactive Plant sections can be prepared without the Work of the active plant sections. The use of another unwinding device, another Leimwerks and another heating plate unit allows it to double the production of cardboard with unilateral wave and in short periods of operation with unilateral wave on the operation with multi-shaft, with optimal utilization the machines of the plant and an optimal use of the for the plant responsible personnel.

Corresponding some embodiments, the further unwinding device, the further gluing unit and the further heating plate unit in a relative to the height at which the first hot plate unit is located, arranged at the top.

In In some embodiments, an alternative is double Way for a train of corrugated cardboard, coming from the first one-sided corrugator comes, provided a first Way towards the first gluing plant and a second way towards the further gluing plant runs.

In some embodiments run above the fifth Unwinding a way for the first and the second Cardboard web, which are glued together, from the first one-sided Corrugator come, and a way for the third and the fourth cardboard web, which are glued together, that from the second one-sided corrugator come; one of these first and second Wegs is alternatively in the direction of the first gluing unit or in the direction the other gluing plant deflected.

The Plant can advantageously a first cutting and creasing line include a corrugated board made from the first hot plate unit comes to grooving and cutting into single sheets, and a second cutting and creasing line to a corrugated board, the comes from the second Heizplatteneinheit to provide grooves and cut into individual sheets.

In In some embodiments, the second line is at least partly above the first cutting and creasing line.

In some embodiments, the first and the second Cutting and creasing each at least one respective stacking device on. The stacking devices can be at the level of the first heating plate unit and in the feed direction of the corrugated board be arranged one behind the other along the cutting and creasing lines. Advantageously, it can be provided that from the other second heating plate unit coming train a cutting and Rillstation and a sheeter fed above of the line section in which the cutting and scoring station and the cross cutter are arranged, which from the first Cut the heating plate unit on the next run and grooved. In some embodiments, a conveyor projects beyond the stacking device or stacking devices containing the sheets, the coming through the cut of the first Heizplatteneinheit Cardboard web were produced, picks up or take up to the bows to bring to another stacking device, the stacking device or is arranged downstream of the stacking devices, which are the arcs, through the box coming out of the first hot plate unit were formed, absorbs or absorb.

Further possible advantageous features of the system according to the Invention are mentioned in the appended claims and are below including an unrestricted Embodiment described in more detail.

Brief description of the drawings

The Invention can be better understood by the description and the attached drawing, which is a practical, not limited embodiment of the invention shows. In particular, in the drawing:

the 1A . 1B . 1C and 1D various sections of a production line in the equipment for the production of a double-shaft corrugated board; the various sections are shown in parts and in separate overviews for ease of understanding, but it should be understood that they are actually arranged in series in the feed direction of the carton;

the 2A . 2 B . 2C and 2D the same parts of the line 1A . 1B . 1C and 1D However, the line is equipped to simultaneously produce two sheets of single-sided wave corrugated carton, and

the 3 to 9 enlarged details of the corrugated cardboard in different places of the line in the different operating modes.

Detailed description of one preferred embodiment

in the Following are the components, units or machines of the plant according to the invention in one possible Embodiment described, starting from the machine, in the feeding direction of the cardboard webs furthest forward is arranged up to the machine, which is arranged furthest back is.

To Beginning will summarize the known components described the baseline, which are located at lower altitude, and then become units, machines or sections described, which are arranged in the upper level and the Auxiliary elements and additional elements of the system according to the Invention for the production of corrugated cardboard with one-sided Wave can be used in double speed.

Since the plant has a significant length, the line has been divided into sections shown in the various figures to provide an overall representation on a scale sufficient to represent all the essential elements of the line. In particular, they illustrate 1A . 1B . 1C and 1D successive sections which are all in fact on the same plane and along the main feed direction of the board webs in series. Between one figure and the next a connection is given, which illustrates the path of the individual cardboard sheets. The sequence of 2A - 2D shows the same line in another embodiment, but for the sake of better graphical representation, with the same criterion of subdivision into sections.

The system has a first unwinding device 1 to unwind a first roll of a first sheet of smooth carton. In a known per se, the first unwinding device 1 two pairs of arms 5A . 5B to hold a roll BA1 in working position and a roll BA2 on hold. This arrangement allows the provision of the first board web N1 in a continuous manner thanks to the presence of a splicer uniting the end of the web coming out of the roll BA1 with the beginning of the web coming out of the roll BA2 when the roll BA1 comes to an end or when the web wound on it breaks off. The splicing device is not shown in the drawing for the sake of clarity, but can be realized in a manner known per se by those skilled in the art. Examples of unwinding devices and splicing devices that can be used in these unwinding devices are shown in FIG GB-A1569886 . EP-A-0378721 . EP-A-0341642 . EP-A-0341605 . US-A-5,171,396 . US A3,858,819 . EP-A-1348658 . US-A-6,966,961 . EP-A-1609749 . US-A-7,441,579 whose contents are included in this description.

The first board web N1 becomes a first one-sided corrugated board machine 7 fed. This single-sided corrugator machine is not described in detail, since it is known per se. This can, for example, as in EP-A-1362690 and in EP-A1362691 be described, whose contents are included in this description. In short, a single-sided corrugator machine has a first corrugating roll 9 , a second corrugating roll 11 , a press roll 13 , a first heating roller 15 around which the web N1 is deflected before passing around the corrugating roll 9 is supplied around.

There will also be another heating roller 17 intended for a second board web N2. The first web N1 forms the blanket or smooth sheet of a first web of corrugated cardboard Nx, which emerges from the single-faced corrugator 7 is obtained. Conversely, the second web N2 is corrugated by passing through the throat between the corrugating rolls 9 and 11 passes. The second board web N2 is from a second unwinding device 21 fed, which has a double pair of arms to hold a roller BB1 in working position and a spare roller BB2, completely analogous to the embodiments for the unwinding device 1 , The unwinding device 21 can be realized in the same way as the unwinding device 1 ,

The sheet corrugated cardboard Nx (see also enlargement in 3 ) is above the unwinding device 21 along a bridge on which it forms a reserve and from which it is fed as described below up to a hotplate unit.

The unwinding device 21 downstream there is a third unwinding device 23 with a roll BC1 and a roll BC2, with the first in working position and the second in waiting position. The third unwinding device 23 carries a third sheet of smooth carton N3 of a second single-sided corrugator machine 25 to that, essentially the same as the first single-sided corrugator 7 is designed and will not be described in detail. Except the third carton path N3 becomes the one-sided corrugator 25 a fourth board web N4 supplied by an unwinding device 31 provided. The board webs N3 and N4 are joined to form a second web of corrugated cardboard Ny (see also enlargement in FIG 4 ), of which the board N3 forms the blanket and the board N4 the corrugated sheet. The corrugated board Ny is fed to an overhead bridge to form a reserve corrugated carton. This reserve is located below a path Px along which the first web of corrugated carton Nx is diverted.

The fourth board web N4 becomes the second one-sided corrugator 25 from an unwinding device 25 supplied, for example, in the same or equivalent manner as the first unwinding device 1 and the second unwinding device 23 is designed. With BD1 and BD2, the work roll and reserve roll are in the unwind 31 referred to, in turn, as the first unwinding device 1 and the second unwinding device 23 a splicer are provided to unite the end of the trailing path with the beginning of the web on hold.

The third unwinding device 31 downstream is a fourth unwinding device 33 which is essentially the same as the unwinding device 1 . 23 and 31 is. This leads a fifth track smooth carton N5 toward a Heizplatteneinheit, the total with 37 is also fed to the webs corrugated carton Nx and Ny.

Between the fifth unwinding device 33 and the hot plate unit 37 are three heating rollers 41 . 43 and 45 and a glue plant 47 arranged. The first heating roller 41 picks up the web formed by the webs N1 and N2 corrugated carton Nx, which comes from the path Px in high altitude. The second heating roller 43 picks up the web of corrugated carton Ny, which is transported along the path Py, which is located below the path Px. The third heating roller 45 picks up the sheet of smooth carton N5, that of the fifth unwinding device 33 is supplied. In a known manner cause the three heating rollers 41 . 43 and 45 that the webs Nx, Ny and N5 before entering the gluing plant 47 be brought to a suitable temperature.

The contact with the heating rollers 41 . 43 and 45 heated webs Nx, Ny and N5 become the glue plant 47 fed. This is realized in a manner known per se, such as in WO-A-00/48743 described. This gluing unit ensures that on the tips of the wavy gust N2 and N4 an adhesive is distributed, so that the fact that the tracks Nx, Ny and N5 then the Heizplattenaggregat 37 be supplied, these three components are glued together. The hot plate unit 37 can be realized in a known per se, such as in EP-A-1491325 whose contents are included in this description.

The heating plate unit 37 downstream there is a cutting and creasing with a cutting and Rillstation 51 , a transport unit 53 , a sheeter 52 that by cutting in the cutting and rill station 51 divided cardboard strips divided into individual sheets, two superimposed conveyor 55 . 57 , a first stacking device 59 and a second stacking device 61 , These components are known individually. The cutting and scoring station, for example, as in EP-A-896864 . EP-A-0737553 . US-A-5,951,454 . EP-A-894 583 . US-B-6,553.883 ; US-B-6,684,749 be described, whose contents are included in this description. The sponsors 55 . 57 and the stacking devices 59 and 61 can like in EP-A-557255 . US A5,829,951 . 557255 be described, whose contents are included in this description.

The line described so far, which is also called the main line, is of a kind known per se. If all the machines which make it up work, a product is obtained which is made of a multi-track corrugated board, which in 5 denoted by Nm, is formed by a first blanket, that of the cardboard web 1 is formed of a first corrugated web N2 of a smooth path N3, a corrugated web N4 and an outer cover N5, which forms the side opposite to that formed by the web N1.

In In some embodiments, the main line may also be a have a different number of single-sided corrugators, For example, three or more single-sided corrugators to Produce corrugated board webs with three or more shafts. Further can use one or more of the single-sided corrugators have more than two unwinding, for example, to a to make double corrugated layer, d. H. that of two connected Cardboard webs is formed.

If a single-sided corrugated board web Ns ( 9 ) is to be made with a line of this type, ie a web with a single corrugated layer and two opposite smooth outer covers, a part of the machinery remains out of service. In particular, would need one of two single-sided corrugators 7 . 25 and their respective unwinding devices are disabled. Even the operators responsible for these machines remain inactive. This brings a significant economic and organizational disadvantage.

Around To solve this problem, the system according to the Invention around a series of units, machines and devices added that in a different height and are preferably arranged above the main line described here. These auxiliary devices are explained below. they form a section of the guide.

In one embodiment, above the main part of the plant, ie the main line described so far, the following units, machines or sections are arranged in the direction of advance of the carton forming a section of the auxiliary line. In the first place is a Hilfsabwickelvorrichtung 71 (please refer 1C ) arranged in a manner analogous to the unwinding devices 1 . 21 . 23 . 31 and 33 is designed. In the unwinding device 71 For example, a first roll BF1 and a second roll BF2 are arranged for a sheet smooth carton. The unwinding device 71 has like the previous unwinding units also a splicer on to unite the end of the outgoing role with the beginning of the new role on hold. The unwinding device 71 is a pair of heating rollers 73 . 75 downstream. When this part of the line is in operation, it turns around the heating roller 75 around a cardboard sheet N6 deflected by the role in working position in the unwinding 71 is unwound, and around the heating roller 73 around, the web of corrugated cardboard Nx is obtained, which is obtained from the connection of the above-described webs N1 and N2. In the embodiment of 1A - 1D However, this upper part of the production line is not in operation. Conversely, the way the cardboard sheets in this part of the line in the 2A - 2D be observed, in which the line is designed to produce two single-sided card webs simultaneously, as described in more detail below.

The heating rollers 73 . 75 is an additional gluing unit 77 subordinate, in essence, with the gluing plant 47 is equivalent, but as a one-sided gluing (ie for a one-sided corrugated board) instead of a double Glimwerk as the gluing 47 is designed. The further gluing plant 77 Applies the adhesive on the tips of the corrugations formed on the corrugated cardboard N2, which is connected to the smooth web N1 and forms with this last a web corrugated cardboard Nx, when the line is the embodiment of the 2A - 2D Has. The glued sheet of corrugated cardboard Nx and the sheet of smooth cardboard N6 become the hot plate unit 81 fed to the gluing plant 77 is subordinate. This hotplate unit 81 is essentially like the hotplate unit or the "Double Facer" 37 designed and causes the bonding of the webs Nx and N6, when the section of the line described here is in operation.

The heating plate unit 81 downstream are a cutting and Rillstation 83 Essentially, with the cutting and rill station 51 equivalent, and a sheeter 85 the one in the cutting and scoring station 83 cut and corrugated strips corrugated cardboard into a series of cardboard sheets divided by a conveyor 87 in the direction of a stacking device 89 are supplied, which is located in the amount of the main part of the line, the stacking devices 59 and 61 arranged downstream relative to the feed direction of the board web in the processing line.

As mentioned above, the plant is in the 1A - 1D equipped to make a double-shaft corrugated board, which is formed by the connection of the five webs N1-N5, while the unwinding device 71 , the corrugating rolls 73 . 75 , the glue plant 77 and the hot plate unit 81 are out of order. In this configuration, an operator can prepare the N6 board web to begin the processing of two single-sided webs of corrugated board.

The processing of two single-sided webs corrugated cardboard boxes in parallel is done with the line as in the 2a - 2D illustrated is designed. As can be observed in these figures, the heating plate unit 37 the sheet corrugated cardboard Ny made of the sheet smooth carton N3 and of sheet corrugated cardboard N4, that of the one-sided corrugator machine 25 was corrugated, along with the board web N5, by the unwinding device 33 comes, fed. Only one of the two sections of the gluing unit 47 is in operation to glue the tips of the Ny board. In the lower heating plate unit 37 the sheet of smooth carton N5 is glued to the cardboard sheet Ny to form, on exit from the heating platens, a web of corrugated cardboard with unilateral wave Ns ( 9 ), which in the cutting and Rillstation 51 then grooved and cut and later cut transversely in the downstream section and formed into individual sheets to form on the stacking devices 59 . 61 or at least to get on one of them pile of sheets. It is to be understood that although a double-level stacker is illustrated in the drawing, the unit may operate on a single level by deactivating the other or otherwise configured to have a single collection level.

The web corrugated carton Nx, which is transported along the path Px, is reversed along a to the in the 1A - 1D shown way alternative way supplied (ie to the heating roller 41 around, then into the gluing plant 47 and from here into the hotplate unit 37 ) to the path designated Px 'in the direction of the heating roller 73 to follow and thus around this roller, through the Gluework 77 through and finally into the hot plate unit 81 , The from the unwinding device 71 supplied sheet smooth box N6 is placed around the heating roller 75 deflected around and by passing through the Heizplatteneinheit 81 connected to the web Nx, taking in the glue plant 77 previously provided with adhesive. When exiting the hotplate unit 81 finally one has a corrugated cardboard with unilateral wave Ns ( 9 ), which is similar to that of the lower heating plate unit 37 comes and the in the cutting and Rillstation 83 grooved and cut in the sheeter 85 divided into arches and along the conveyor route 87 to the stacking device 89 is supplied.

It can thus be understood that one with a system of described in an optimal way the units and machines, which can make use of the plant, and that the operators, the responsible for monitoring the plant are best used, even if corrugated with one-sided wave Ns is produced, since in this case though on a double line with double production of one-sided carton all units are kept in operation and thus the use of the staff is optimized. It is also to understand that the preparation of the facility for the production of two sheets of corrugated cardboard with one-sided Wave Ns can be done while the plant only with the lower machine unit works to corrugated board with double shaft Nm, since all units, machines and devices, the cardboard corrugated for the production of the second web with unilateral wave are necessary, are physically separated, also what the feed path of the cardboard sheets relative to the main units the line concerns the manufacture of the board web with multi-shaft (in the example with double shaft) are in operation.

It It goes without saying that the drawing is only an illustration using an example shows that as a practical demonstration the invention, which can vary in forms and arrangements, without departing from the scope of the concept, that of the invention Reason lies. Reference numerals in the appended claims where appropriate, should be with reference to the description and the drawings facilitate reading the claims; the scope of protection represented by the claims not restricted.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

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• - EP 896864 A [0042]
• EP 0737553 A [0042]
• US 5951454A [0042]
• EP 894583A [0042]
• US 6553883 B [0042]
• US Pat. No. 6,684,749 B [0042]
• - EP 557255 A [0042]
• US 829951 A5 [0042]
• US 557255 [0042]

Claims (11)

A corrugated board manufacturing plant having a main line for producing single-sided or multiple-shaft corrugated cardboard, having two or more single-sided corrugated cardboard machines, respective unwinding devices for feeding respective board webs and a hot plate unit, characterized in that a guide line section is provided at a different height from the main line is arranged with at least one further unwinding device for the supply of another board web and another Heizplatteneinheit for the production of corrugated cardboard with unilateral wave parallel to the main line. Plant according to claim 1, 2 or 3, characterized in that the auxiliary line section in a relative to the height at which the first hot plate unit is located, higher altitude is arranged. Plant according to claim 1, wherein the main line has: - at least a first one-sided Corrugated cardboard machine with at least a first unwinding device and a second unwinding device to the first single-sided corrugator to supply a first board web and a second board web; - at least a second single-sided corrugator machine with at least a third one Unwinding device and a fourth unwinding device to the second one-sided corrugator machine a third board web and a fourth To feed cardboard web; - at least a fifth Unwinding device for a fifth board web; - one first gluing unit to apply glue on the tips of the first single-sided corrugator and the second one-sided Corrugated board machine manufactured on the second and fourth board web were; A first heating plate unit downstream of the gluing unit, around the board webs, consisting of the first and the second corrugating roll unit come to unite with each other; and wherein the auxiliary line a Another gluing unit has, in front of the other heating plate unit is arranged. Plant according to claim 3, characterized that they are an alternative double way for a web of corrugated cardboard, made from the first single-sided corrugator comes, having a first path in the direction of the first Glue and a second path in the direction of the further glue plant runs. Plant according to claim 3, characterized characterized in that it comprises at least three heat rollers before the first Gluing unit and at least two heating rollers in front of the other gluing unit having. Plant according to claim 4, characterized characterized in that it comprises at least three heat rollers before the first Leimwerk and at least two heating rollers before gluing plant has and that the first way around one of the heating rollers before the first gluing plant around and the second way around one of the heating rollers in front of the other gluing unit runs around. Plant according to claim 3, characterized characterized in that above the fifth unwinding device there is a path for the first and the second board web, which are glued together, from the first one-sided corrugated board machine come, and a way for the third and fourth board web, which are glued together, which are from the second one-sided Corrugator come, and that one of them, the first and second way, alternatively in the direction of the first gluing unit or can be deflected in the direction of the further gluing unit. Annex according to at least one of preceding claims, characterized in that she has a first cutting and creasing line to one of the first hot plate unit coming corrugated cardboard with grooves to provide and cut into individual bows, and one second cutting and creasing line to one of the second heating plate unit to provide corrugated cardboard with grooves and in individual To cut bows. Plant according to claim 8, wherein the second line at least partially above the first cutting and Crease line is. Plant according to claim 8 or 9, characterized in that the first and the second cutting and Rillline each have at least one respective stacking device, wherein the stacking devices at the level of the first heating plate unit and in the feed direction of the corrugated board along the cutting and Rill lines are arranged one behind the other. Annex according to at least one of claims 8 to 10, characterized in that the first Cutting and creasing line a double level conveyor system to the cut and grooved bows to promote in the direction of two stacking devices in a row.