EP3616898A1 - Corrugated board system - Google Patents

Abstract

The invention relates to a corrugated cardboard system comprising at least one corrugated cardboard manufacturing device (7) for producing at least one corrugated cardboard web (8, 28) laminated on one side, and a connecting device (42) downstream of the at least one corrugated cardboard producing device (7) for connecting the at least one laminated on one side Corrugated cardboard web (8, 28) and a laminating web (6, 34) with one another to form an at least three-layer corrugated cardboard web (4), at least one cutting device (54) for producing corrugated cardboard sheets (58) and at least one individual code reading device (77, 78, 79) ) for reading individual corrugated cardboard sheet codes (5) on at least one of the webs (6, 14, 18, 28, 34) of the at least three-layer corrugated cardboard web (4) and / or on at least one of the webs (6, 8, 14, 18, 28, 34) to form the at least three-layer corrugated cardboard web (4) and / or on the corrugated cardboard sheets (58). A corrugated cardboard plant control device (83) is capable of individually controlling at least one corrugated cardboard sheet depositing device (59) for depositing the corrugated cardboard sheets (58) in accordance with the at least one associated corrugated cardboard sheet individual code (5) read.

Description

This patent application takes the priority of the German patent application DE 10 2016 206 016.3 claim, the content of which is incorporated herein by reference.

The invention relates to a corrugated cardboard system for producing corrugated cardboard. The invention further relates to a method for producing corrugated cardboard.

Corrugated cardboard systems are generally known from the prior art by public prior use. These are able to produce large quantities of corrugated cardboard sheets. The DE 10 2007 027 879 A1 . DE 44 35 212 A1 . DE 41 22 600 A1 . DE 103 12 601 A1 and DE 10 2007 054 193 B3 disclose generic corrugated cardboard systems.

From the EP 1 459 878 A2 a generic corrugated cardboard system is known. A first material web has first marks printed on the edge and strips with printed second marks along the working direction at regular intervals. A reading device determines distances between neighboring marks. A control computer determines a degree of shrinkage from a ratio of the distances between the marks. This is how scaling factors for a print pattern are determined. At the same time, a control device controls longitudinal cutting stations and a cross cutting device accordingly.

The post-published WO 2017/051146 A1 discloses a corrugated board machine with a control system and a sheet processing assembly. The sheet processing assembly includes a visual instruction unit to read information markers printed on corrugated sheets. A sheet processing device or a device for producing a corrugated cardboard web can be controlled by the control system as a function of a read information marker.

The invention has for its object to provide a corrugated cardboard system that allows extremely economical and easy production of individualized or individual corrugated cardboard sheets. A corresponding procedure is also to be created.

This object is achieved according to the invention by the features specified in independent claims 1 and 15. The essence of the invention is that the at least three-layer corrugated cardboard web or at least one web, in particular laminating web and / or cover web, for forming the same, has individual, in particular two-dimensional, corrugated cardboard sheet individual codes or corrugated cardboard sheet individual code prints, in particular on the outside, in each case at least contain useful information.

In the at least one individual code reading device and / or corrugated cardboard plant control device, useful information associated with the corrugated cardboard individual codes, for example, can be further processed. The respective information connection can be wireless or wired.

For example, at least one, preferably at least some, for example all, individual code reading devices are assigned their own corrugated cardboard plant control device. As an alternative and / or in addition, at least two individual code reading devices are in information communication with a higher-level corrugated cardboard plant control device. Combinations are possible.

The at least one corrugated cardboard plant control device is preferably connected to at least one processing device for processing the at least three-layer corrugated cardboard web and / or at least one of the webs to form the at least three-layer corrugated cardboard web and / or the at least one corrugated cardboard sheet. This configuration allows a very economical individual processing or very economically individually produced corrugated cardboard sheets. The at least one processing device is advantageously designed as a corrugated cardboard processing device or corrugated cardboard processing / handling device.

It is expedient if, for example, a stack height of stacked corrugated cardboard sheets can be individually adjusted with the at least one corrugated sheet storage device.

The corrugated cardboard individual codes, for example, can themselves directly contain the useful information. It is useful if the corrugated sheet individual codes information carriers represent, whose at least one (useful) information can preferably be read out when required and / or whose at least one (useful) information can be assigned at least one further / new information.

According to a preferred embodiment, it is possible for at least one, in particular static, information to be stored directly in the corrugated cardboard individual codes in accordance with a nomenclature. With a comparatively high data depth and / or unconditional uniqueness, the corrugated cardboard individual code advantageously only provides a connection / link to a, for example superordinate, database, where preferably at least one useful information is stored and is preferably (dynamically) changeable or expandable. The corrugated cardboard individual code then contains the useful information quasi indirectly.

It is advantageous if the individual corrugated cardboard sheet codes can be read by machine, in particular optically or optoelectronically, and, advantageously, electronically.

The at least one individual code reading device is advantageously designed as an optical individual code reading device. It is designed, for example, as a scanner and / or camera or the like. The at least one individual code reading device is used in particular for reading, preferably two-dimensional, corrugated sheet individual codes.

It is advantageous if the at least one individual code reading device is designed as an individual code line reading device or line camera. Preferably, the entire width of the at least one web, which has the individual corrugated cardboard sheet codes, can be inspected and / or checked with respect to the individual corrugated cardboard sheet codes, in particular over a wide area. Alternatively, for example, at least two individual code line reading devices are arranged next to one another in order to inspect or check the entire width of the at least one web which has the individual corrugated cardboard sheet codes, in particular over a large area, with regard to individual corrugated cardboard sheet codes. The individual code line reading devices are thus advantageously arranged next to one another in the transverse direction of this path. Different corrugated sheet individual codes can be recorded in this way.

It is advantageous if the at least one web provided with individual corrugated cardboard sheet codes is scanned over its entire width or over the entire surface, for example using a line scan camera. Several corrugated cardboard individual codes can then be read out at the same time. These can be arranged, for example, distributed over the entire width of the web and in particular appear on each web provided with individual corrugated cardboard sheets. When reading using a line scan camera, the prepositioning of individual cameras in the sense of traversing across the width of the web becomes obsolete.

It is expedient if the at least one individual code reading device comprises at least one image sensor, in particular a CMOS, CCD (charge-coupled device) and / or CIS sensor (contact image sensor), or uses a corresponding technology.

The, especially printed, corrugated cardboard individual codes are expediently permanently visible. They stand out visually from the surface. These preferably contain dark, such as black, printing ink. It is advantageous if they also contain light, such as white or brown (print) color / (print) areas.

The connecting device is preferably designed as a heating and pulling section or heating pressing device.

The at least one cutting device is preferably designed as a transverse cutting device.

The at least one corrugated cardboard manufacturing device preferably each comprises a corrugating device for corrugating a material web to be corrugated to form a corrugated web. It also conveniently has a glue application device for gluing the corrugated sheet. It is advantageous if the at least one corrugated cardboard manufacturing device also comprises a pressing device for pressing a respective cover sheet against the corrugated sheet provided with glue.

The laminating web is advantageously a smooth material web. In the case of the corrugated cardboard sheets or the at least three-layer corrugated cardboard web, it preferably forms an outer layer.

In the case of the at least three-layer corrugated cardboard web or the corrugated cardboard sheets, the individual webs or layers are advantageously glued to one another in layers.

In particular, three-layer, five-layer or seven-layer corrugated cardboard sheets can be produced with the corrugated cardboard system.

The terms "upstream", "downstream", "upstream", "downstream" or the like used here refer in particular to the respective conveyed web or the conveyed sheet.

Further advantageous embodiments of the invention are specified in the subclaims.

The at least one individual code printing device according to subclaim 2 is advantageously designed as an individual code digital printing device. This means that there is no static printing form. The respective corrugated cardboard individual code prints can then be transferred directly to the at least one individual code printing device. The at least one individual code printing device is designed, for example, as an ink jet individual code printing device or laser individual code printing device.

The at least one individual code printing device is preferably assigned to the laminating web for printing, in particular on the outside, the same with the corrugated sheet individual codes. The liner is extremely good and easy to print. In particular, it can be avoided with particular certainty that further processing in the corrugated cardboard system damages or makes the individual corrugated cardboard sheet codes illegible.

It is advantageous if the at least one individual code printing device is arranged upstream of the connecting device, in particular upstream of a gluing unit for applying glue to at least one of the webs to form the at least three-layer corrugated cardboard web.

In particular, the at least one individual code printing device is arranged in an individual code printing line, the individual code web printed there being later transferred to a corrugated cardboard production line. The incorporated individual code web forms the laminating web for the at least three-layer corrugated cardboard web or the corrugated cardboard sheets. The individual code track can be processed optionally or permanently.

Alternatively, the at least one individual code printing device is integrated, for example, in a corrugated cardboard production line and permanently assigned to the laminating web.

Alternatively, an outer cover sheet of the at least three-layer corrugated cardboard sheet or a cover sheet for forming the at least three-layer corrugated cardboard sheet is printed on the outside with individual corrugated sheet sheets.

It is expedient if the at least one individual code printing device is able to print the corrugated cardboard individual codes at least one-dimensionally, preferably two-dimensionally. During operation, the at least one individual code printing device prints or generates at least one-dimensional, preferably two-dimensional, corrugated sheet individual codes. It is advantageous if the corrugated cardboard individual codes can be read in a respective reading field regardless of their orientation. The corrugated cardboard individual codes advantageously contain at least one error correction and / or error detection.

The at least one individual code printing device expediently prints at least one of the webs of the at least three-layer corrugated cardboard web and / or at least one of the webs for forming the at least three-layer corrugated cardboard web such that each corrugated cardboard sheet has at least one of the individual corrugated cardboard sheet codes.

It is expedient if one-dimensional corrugated sheet individual codes have a series of, preferably black, lines on a light, preferably white or brown, background. The one-dimensional corrugated cardboard individual codes are advantageously designed as two-width individual codes or multi-width individual codes.

However, the at least one individual code printing device preferably generates two-dimensional corrugated sheet individual codes. The user information is therefore encoded in the form of areas. The user information can thus be coded extremely compactly. The two-dimensional corrugated cardboard individual codes then have a particularly high density of useful information. The two-dimensional corrugated cardboard individual codes preferably have lines and / or dots of different widths and gaps between them, which preferably have a high contrast to the lines or dots. The corrugated cardboard individual codes are advantageously in the form of matrix codes, in particular data matrix codes. Other, in particular two-dimensional, corrugated sheet individual codes, such as stacked codes, can be used alternatively. Alternatively, a QR code can also be used, for example. The QR code advantageously represents a reference to a, for example higher-level, database. The code is then preferably free of useful information. The corrugated cardboard system is preferably able to assign information to the individual corrugated cardboard sheet codes. The corrugated cardboard plant advantageously has at least one corresponding allocation unit for this.

It is advantageous if the at least one storage device according to sub-claim 3 comprises at least one supply roll with a web provided with the individual corrugated cardboard sheet codes.

It is advantageous if at least one upstream process / step, such as pre-printing at least one web or roll, of the corrugated cardboard plant or a corrugated cardboard production line has at least one necessary or useful information, in particular with regard to processing and / or processing of at least one Sheet or a corrugated cardboard sheet, provides or delivers. Pre-printing takes place, for example, in a process coupled with the production of corrugated cardboard, in particular in a continuous process, a so-called machine run, or in a separate upstream machine run. It is expedient if, in the case of a separate upstream machine run, the web (s) provided with the individual corrugated cardboard sheet codes are rewound, then transported to the corrugated cardboard plant or corrugated cardboard production line and then unrolled for processing. The corrugated cardboard plant or corrugated cardboard production line then preferably uses the web (s) provided with individual corrugated cardboard sheet codes. An overall arrangement then advantageously includes the corrugated cardboard system and at least one upstream pre-printing device.

The embodiment according to subclaim 4 leads to corrugated cardboard sheets which are individually provided with at least one, in particular characteristic, corrugated cardboard sheet individual code, in particular printed. In particular, each individual corrugated cardboard sheet code is adapted to the processing or manufacture of this corrugated cardboard sheet in accordance with the associated order. The difference is preferably in the useful information contained or in the different reference.

The embodiment according to subclaim 5 enables a particularly simple and functionally reliable (follow-up) tracking of a web section of the at least three corrugated cardboard sheet having at least one corrugated cardboard individual code or at least one web for forming the at least three-layer corrugated cardboard web or the corresponding corrugated cardboard sheet. The corrugated cardboard sheets are advantageously traceable both in their production and in further processing or handling steps. For example, it can thus be determined where a path section of the at least three-layer corrugated cardboard web or the corresponding corrugated cardboard sheet that has this at least one individual corrugated cardboard sheet code is located.

It is advantageous if the at least one corrugated cardboard plant control device individually controls at least one processing device, in particular the corrugated cardboard plant, in accordance with the at least one read corrugated cardboard sheet individual code. This configuration enables individual processing in a particularly simple and functionally reliable manner. A processing device is extremely easy to convert. This is conveniently possible at particularly short notice. For example, depending on the corrugated cardboard sheet code read, there is a corresponding, in particular direct, adjustment / adjustment of an individual processing device or a group of processing devices. In particular, the at least one corrugated cardboard plant control device then controls at least one processing device, in particular directly, corresponding to the at least one corrugated cardboard sheet individual code read, which is assigned or arranged downstream of the corresponding individual code reading device.

It is advantageous if at least one, preferably more, more preferably all, processing device (s) is arranged or assigned an individual code reading device, in particular directly.

In the preheating device according to subclaim 6, in particular the heating and / or temperature of the at least one web to be heated can be changed individually.

It is expedient if, in the gluing unit according to subclaim 7, for example the amount of glue and / or glue width to be applied to the at least one web to be glued can be changed individually.

In the connecting device according to subclaim 8, for example, the heating temperature, web temperature and / or the contact pressure can be changed individually.

It is advantageous if the (format) length of the sheet of corrugated cardboard to be produced can be changed individually in the cutting device according to subclaim 9. The cutting device is advantageously able to assign the corrugated cardboard sheets to different levels and / or different stacks.

With the short cross-cutting device according to subclaim 10, for example, a defective piece of corrugated cardboard can be individually cut out of the at least three-layer corrugated cardboard web and can be discharged from the corrugated cardboard system. In particular, only defective corrugated cardboard pieces are removed. The defective corrugated cardboard piece can be identified, for example, by exchanging it with at least one processing device which is arranged upstream of the short cross-cutting device. The defective piece of corrugated cardboard can be recognized, for example, by exchanging it with an individual code reading device which is arranged upstream of the short cross-cutting device.

It is advantageous if, according to subclaim 10, the at least one corrugated cardboard plant control device automatically issues a new order for the new, error-free creation of this corrugated cardboard piece when a defective corrugated cardboard piece is discharged. The faulty Corrugated cardboard piece can have, for example, a gluing error, printing error and / or an incorrect dimension. It is advantageous if the corrugated cardboard individual code shows that the piece of corrugated cardboard is defective. It is advantageous if the unrecognizable, non-readable and / or poor readability of the individual corrugated cardboard sheet code leads to the removal of the respective corrugated cardboard piece.

With the slitter / scoring device according to subclaim 11, the (format) width of the corrugated cardboard web or of partial webs originating therefrom can advantageously be changed individually.

It is expedient if a respective (transverse) position of the corrugated cardboard individual codes is determined / measured and a comparison is made with a target position of the corrugated cardboard individual codes. The respective corrugated cardboard sheet individual code preferably, in particular itself, provides for readjustment of at least one processing device depending on the current position of the respective web. This preferably replaces other separate pressure elements for tracking cutting or creasing tools.

In the case of the corrugated cardboard sheet stacking device according to subclaim 13, the discharge of generated stacks from the corrugated cardboard plant is expediently individually adaptable / controllable.

Subclaims 2 to 14 also relate to advantageous embodiments of independent claim 15.

The at least one individual corrugated cardboard sheet code printed on the corrugated cardboard sheet advantageously has at least one piece of control information for controlling a preheating device for preheating at least one web to form the at least three-layer corrugated cardboard web.

It is advantageous if the at least one individual corrugated cardboard sheet code printed on the corrugated cardboard sheet has at least one piece of control information for controlling a glue unit for applying glue to at least one web to form the at least three-layer corrugated cardboard web.

The at least one individual corrugated cardboard sheet code printed on the corrugated cardboard sheet preferably has at least one piece of control information for controlling the connecting device, at least one piece of control information for controlling a short cross-cutting device for cross-cutting the at least three-layer corrugated cardboard sheet and discharging a, preferably faulty, piece of corrugated cardboard, at least one piece of control information for controlling one Slitting / creasing device for slitting and creasing the at least three-layer corrugated cardboard web, at least one control information for controlling the cutting device, at least one control information for controlling at least one corrugated cardboard sheet depositing device and / or at least one control information for controlling a corrugated cardboard sheet stacking device.

Figur 1

eine schematische Teil-Seitenansicht einer erfindungsgemäßen Wellpappeanlage,

Figur 2

eine Draufsicht auf die in Figur 1 dargestellte Wellpappeanlage, und

Figur 3

eine schematische Teil-Seitenansicht einer erfindungsgemäßen Wellpappeanlage gemäß einer zweiten Ausführungsform.

Two preferred embodiments of the invention are described by way of example below with reference to the accompanying drawing. Show:

Figure 1

2 shows a schematic partial side view of a corrugated cardboard plant according to the invention,

Figure 2

a top view of the in Figure 1 shown corrugated cardboard plant, and

Figure 3

is a schematic partial side view of a corrugated cardboard system according to the invention according to a second embodiment.

First, referring to the Figures 1 and 2 A corrugated cardboard system comprises a corrugated cardboard production line 1 and an individual code printing line 2 as well as an individual code line transfer arrangement 3, via which the individual code printing line 2 is connected to the corrugated cardboard production line 1. A multi-layer endless corrugated cardboard web 4 can be produced in the corrugated cardboard production line 1, while an endless individual code web 6 provided with individual corrugated cardboard sheets 5 can be produced in the individual code printing line 2. The individual code imprint line 2 preferably extends parallel to the side next to the corrugated cardboard production line 1. Alternatively, the individual code imprint line 2 runs, for example, perpendicular to the corrugated cardboard production line 1 or is integrated into the corrugated cardboard production line 1.

The corrugated cardboard production line 1 comprises a first corrugated cardboard production device 7 for producing an endless first corrugated cardboard web 8 laminated on one side.

The first corrugated cardboard manufacturing device 7 is preceded by a first cover web splicing device 9 and a first material web splicing device 10.

The first cover sheet splicing device 9 comprises a first roll-off unit 12 for unrolling a finite first cover sheet 11 from a first cover sheet roll and a second roll-off unit 13 for unrolling a finite second cover sheet from a second cover sheet roll. The finite first cover sheet 11 and second cover sheet are used to provide a Endless first cover sheet 14 connected to each other by means of a connecting and cutting unit (not shown) of the cover sheet splicing device 9.

The first material web splicing device 10 is designed in accordance with the first cover web splicing device 9. This comprises a third unrolling unit 16 for unrolling a finite first material web 15 from a first material web reel and a fourth unwinding unit 17 for unrolling a finite second material web from a second material web reel. The finite first material web 15 and second material web are used to provide an endless first material web 18 a connecting and cutting unit, not shown, of the first material web splicing device 10 connected to one another.

The endless first cover web 14 is fed to the first corrugated cardboard manufacturing device 7 via a first heating roller 19 and a first deflecting roller 20, while the endless first material web 18 is fed to the first corrugated cardboard manufacturing device 7 via a second deflecting roller 21.

The first corrugated cardboard manufacturing device 7 comprises a corrugated roller arrangement with a first corrugated roller 22 and a second corrugated roller 23 for producing a corrugated, endless first corrugated web from the endless first material web 18. The corrugated rollers 22, 23 form for carrying out and corrugating the endless first material web 18 from a nip. The axes of rotation of the corrugated rollers 22, 23 run parallel to one another.

In order to connect the endless first cover sheet 14 with the endless corrugated first material sheet or corrugated sheet 18 to form the endless first corrugated cardboard sheet 8 laminated on one side, the first corrugated cardboard manufacturing device 7 has a glue application device 24, which preferably comprises a glue metering roller, a glue container and a glue application roller. To carry out and glue the endless first corrugated web 18, the glue application roller forms a gap with the first corrugating roller 22. The glue in the glue container is applied to the corrugation of the endless first corrugated web 18 via the glue application roller. The glue metering roller lies against the glue application roller and serves to form a uniform layer of glue on the glue application roller.

The endless first cover sheet 14 is then joined to the endless first corrugated sheet 18 provided with glue from the glue container in the first corrugated cardboard manufacturing device 7 for producing the first corrugated cardboard sheet 8 laminated on one side.

In order to press the endless first cover sheet 14 against the endless, first corrugated sheet 18 provided with glue, which in turn abuts the first corrugated roller 22 in regions, the first corrugated cardboard manufacturing device 7 has a pressing module 25. The pressing module 25 is advantageously designed as a pressing belt module. It is arranged above the first corrugating roller 22. The pressure module 25 has two deflection rollers and an endless pressure belt which is guided around the two deflection rollers. Alternatively, the pressing module 25 has, for example, at least one pressing roller.

The first corrugating roller 22 engages in a space between the two deflecting rollers of the pressing module 25 in regions from below, as a result of which the pressing belt is deflected by the first corrugating roller 22. The pressure belt presses against the endless first cover sheet 14, which in turn is pressed against the endless first corrugated sheet 18 provided with glue and abutting the first corrugating roller 22.

For the intermediate storage and buffering of the one-sided laminated, endless, first corrugated cardboard web 8, it is fed via a first upward transport device 26 to a first storage device 27, where it forms loops.

Furthermore, the corrugated cardboard production line 1 here has a second corrugated cardboard production device (not shown) which is designed in accordance with the first corrugated cardboard production device 7. The second corrugated cardboard manufacturing device is preceded by a second cover web splicing device (not shown) and a second material web splicing device (not shown), which correspond to the first cover web splicing device 9 and the first material web splicing device 10, respectively, which have already been described. are trained. The second corrugated cardboard manufacturing device is capable of producing an endless second corrugated cardboard web 28 laminated on one side from an endless second cover web and material web.

The one-sided laminated, second corrugated cardboard web 28 is fed to a second storage device 29, where it forms loops.

The corrugated cardboard production line 1 also has a liner web splicing device 30 which comprises a fifth unwinding unit 32 for unrolling a finite first liner web 31 from a first liner web roll and a sixth unwind unit 33 for unrolling a finite second liner web from a second liner web roll. The finite first liner web 31 and the finite second liner web are connected to one another by means of a splicing device (not shown) of the liner web splicing device 30 in order to provide an endless liner web 34.

The liner web splicer 30 also ideally includes a second splicer (not shown). The endless individual code web 6 can be spliced onto the endless laminating web 34 by means of the second splicing device, so that the individual code web 6 then virtually forms the laminating web 34 in the spliced-on manner. The endless individual code web 6 can be spliced to the finite first lamination web 31 or second lamination web by means of the second splicing device. With regard to the detailed structure and precise function of the liner web splicer 30, reference is made to FIGS DE 10 2015 218 321.1 directed.

Downstream of the storage devices 27, 29 and the lamination web splicing device 30, the corrugated board production line 1 has a preheating device 35 which comprises three preheating rolls 36, 37, 38 arranged one above the other. The preheating device 35 is coated on one side with endless, glued corrugated cardboard webs 8, 28 and the endless laminating web 34 or

Individual code web 6 supplied, which loop around the respective preheating roller 36, 37 and 38 respectively. Depending on the order, the preheating device 35 can be supplied with the individual code web 6 printed with corrugated cardboard individual codes 5 or the actual laminating web 34, which is free of corrugated cardboard individual codes 5.

Downstream of the preheating device 35, the corrugated cardboard production line 1 has a gluing unit 39 with gluing rollers 40, 41, which are partially immersed in a respective glue bath. A glue metering roller rests on each gluing roller 40, 41 in order to form a uniform layer of glue on the adjacent gluing roller 40, 41. The corrugated cardboard web 8, which is laminated on one side, is in contact with the gluing roller 41 with its corrugated web 18, so that the corrugation of this corrugated web 18 is provided with glue from the glue bath. The corrugated cardboard web 28, laminated on one side, is in contact with the gluing roller 40 with its corrugated web, so that the corrugation of this corrugated web is provided with glue from the associated glue bath. In the gluing unit 39, the individual code web 6 or the actual laminating web 34 remains unglued.

Downstream of the glue unit 39, the corrugated cardboard production line 1 has a connecting device 42, which is designed as a heating pressure device and comprises a horizontally running heating table 43. An endless pressure belt 45, which is guided around guide rollers 44, is arranged adjacent to the heating table 43. A pressure gap is formed between the pressure belt 45 and the heating table 43, through which the corrugated cardboard webs 8, 28 laminated on one side and the endless laminating web 6 or individual code web 34 are guided to form the endless corrugated cardboard web 4. The corrugated cardboard web 4 here has a total of five layers.

Downstream of the connecting device 42, the corrugated cardboard production line 1 has a short cross-cutting device 46, which comprises at least one cross-cutting roller 47 with a radially projecting cutter bar (not shown). The short cross-cutting device 46 serves to cut out scrap from the endless corrugated cardboard web 4.

Downstream of the short cross-cutting device 46, the corrugated cardboard production line 1 has a slitter / scoring device 48 for longitudinally slitting and scoring the endless corrugated cardboard web 4. The longitudinal cutting / creasing device 48 has two creasing stations 49 arranged one behind the other and two longitudinal cutting stations 50 arranged one behind the other. The creasing stations 49 each have paired creasing tools, between which the corrugated cardboard web 4 is guided. The longitudinal cutting stations 50 each have knives which can be driven in rotation and which can be brought into engagement with the corrugated cardboard web 4 for the longitudinal cutting thereof. In the longitudinal cutting / creasing device 48, endless partial webs 51, 52 can be produced from the corrugated cardboard web 4, which initially still run side by side.

Downstream of the longitudinal cutting / creasing device 48, the corrugated cardboard production line 1 has a switch 53 in order to convey the partial webs 51, 52 of the corrugated cardboard web 4 into different planes.

Downstream of the switch 53, the corrugated board production line 1 has a cross-cutting device 54 with cross-cutting devices 55 arranged one above the other. Each cross-cutting device 55 comprises two knife bar rollers 56 arranged in pairs with radially projecting knife bars. The cutter bars of the cutter bar rollers 56 of a cross cutting device 55 cooperate to cross-cut the partial webs 51, 52.

A conveyor belt device 57 is arranged downstream of each cross-cutting device 55 in order to further convey the corrugated cardboard sheets 58 produced there from the partial webs 51, 52.

Each conveyor belt device 57 is followed by a storage device 59, which is conveniently height adjustable. In the storage devices 59, the corrugated cardboard sheets 58 can be stacked 60 one above the other.

A stack handling device 61 for handling, such as transporting and / or checking, the stacks 60 is arranged downstream of the storage devices 59.

The individual code imprint line 2 comprises an individual code web splicing device 62, which is designed in accordance with the first cover web splicing device 9 or the first material web splicing device 10. The individual code track splicing device 62 thus has a finite first individual code track from a first individual code track roll a first unrolling unit and a second unrolling unit for unrolling a finite second individual code web from a second individual code web reel. The finite first and second individual code tracks are connected to one another by means of a connecting and cutting unit (not shown) of the individual code track splicing device 62 in order to provide the endless individual code tracks 6.

Downstream of the individual code web splicing device 62, the individual code imprint line 2 has a precoating application device 63 which is assigned to the endless individual code web 6 and which applies a flat precoating (not shown) to an outside of the individual code web 6. The flat precoating in particular essentially covers the entire surface of the endless individual code web 6 on its outside, which also forms an outside in the finished corrugated cardboard web 4.

Downstream of the precoating application device 63, the individual code web printing line 2 has a precoating drying apparatus 64 which is assigned to the endless individual code web 6 and dries the endless individual code web 6 or the precoating provided with the precoating on the outside.

Downstream of the precoating drying device 64, the individual code web printing line 2 has a traction mechanism 65 which is assigned to the endless individual code web 6 and which conveys the endless individual code web 6 or pulls it away from the individual code web splicer 62.

Downstream of the train 65, the individual code web printing line 2 has a corona pretreatment device 66 assigned to the endless individual code web 6. The outside of the endless individual code web 6 is exposed to an electrical corona discharge by the corona pretreatment device 66, which leads to an oxidation of its surface.

Downstream of the corona pretreatment device 66, the individual code web printing line 2 has a cleaning device 67 assigned to the endless individual code web 6, which cleans the endless individual code web 6 at least on the outside.

Downstream of the cleaning device 67, the individual code web printing line 2 has an individual code digital printing device 68 assigned to the endless individual code web 6, which prints the corrugated cardboard individual codes 5 on the outside onto the endless individual code web 6 or onto the dried precoating. The digital printing device 68 prints the individual code web 6 in such a way that each corrugated cardboard sheet 58 has at least one corrugated cardboard individual code 5 on the outside. Conveniently, it is also able to print 5 other imprints, such as colors, images, information or the like, on the individual code web 6 in addition to the corrugated cardboard individual codes.

Downstream of the digital printing device 68, the individual code web printing line 2 has an individual code drying device 69 which is assigned to the endless individual code web 6 and dries the printed endless individual code web 6 or its corrugated cardboard sheet individual codes 5.

Downstream of the individual code drying device 69, the individual code web printing line 2 has a coating unit 70 assigned to the endless individual code web 6 for full-area application of at least one transparent overcoat layer (not shown) on the outside onto the endless individual code web 6. The at least one overcoat layer protects the corrugated cardboard individual codes 5 Damage.

Downstream of the coating unit 70, the individual code web printing line 2 has a lacquer drying device 71, which is assigned to the endless individual code web 6 and dries the lacquered endless individual code web 6 or its at least one over lacquer layer.

Downstream of the lacquer drying device 71, the individual code imprint line 2 has a remoistening device 72 assigned to the endless individual code web 6, which moistens the endless individual code web 6 at least on the outside or on the side to be connected to the one-sided laminated corrugated cardboard web 8, 28.

The individual code line printing line 2 also has an individual code line storage device 73 for storing the, in particular printed, individual code line 6.

Downstream of the individual code path storage device 73, the individual code path transfer arrangement 3 is arranged, which comprises a first deflection rod 74 and a second deflection rod 75.

In the case of the first deflecting rod 74, the individual code track 6 is deflected by 90 ° and turned over. By means of the second deflecting rod 75, which is located within the corrugated cardboard production line 1, the individual code web 6 is deflected and turned by 90 ° in the conveying direction 76 of the corrugated cardboard production line 1.

A first individual code reading device 77 is arranged in the corrugated board production line 1. The first individual code reading device 77 is arranged upstream of the preheating device 35 and downstream of the storage devices 27, 29. The first individual code reading device 77 is arranged between the individual code path transfer arrangement 3 and the preheating device 35. It is assigned on the outside to the endless laminating web 34 or the individual code web 6. The first individual code reading device 77 is used to detect the corrugated cardboard individual codes 5. Based on the corrugated cardboard individual codes 5 detected there, control of downstream processing devices takes place.

In the corrugated cardboard production line 1, a second individual code reading device 78 is arranged downstream of the connecting device 42. The second individual code reading device 78 is arranged upstream of the cross cutting device 54, more preferably upstream of the slitter / scoring device 48, more preferably upstream of the short cross cutting device 46. The second individual code reading device 78 is assigned on the outside to the individual code web 6 or the laminating web 34. The second individual code reading device 78 detects faulty corrugated cardboard sheets 58 or reject sheets.

The corrugated cardboard system also has a third individual code reading device 79, which is arranged downstream of the stack handling device 61. The third individual code reading device 79 detects the finished corrugated cardboard sheets 58 after the stack handling device 61.

Each individual code reading device 77, 78, 79 is connected to a higher-level electronic control device 83 via a first, second and third information line 80, 82 and 103, respectively, so that the useful information / s of the individual code reading device 77, 78 and 79 read individual corrugated cardboard sheet codes 5 can be transmitted to the control device 83.

Each individual code reading device 77, 78, 79 is advantageously assigned an evaluation unit (not shown). This can be part of the individual code reading device 77, 78 or 79. Alternatively, this evaluation unit is arranged downstream of the respective individual code reading device 77, 78 or 79. Alternatively, the control device 83 contains at least one corresponding evaluation unit.

The preheating device 35 is connected to the control device 83 via a fourth information line 84.

The gluing unit 39 is connected to the control device 83 via a fifth information line 85.

The connecting device 42 is in information connection with the control device 83 via a sixth information line 86.

The short cross-cutting device 46 is connected to the control device 83 via a seventh information line 87.

The slitter / scoring device 48 is connected to the control device 83 via an eighth information line 88.

The cross-cutting device 54 is connected to the control device 83 via a ninth information line 89.

The storage devices 59 are connected to the control device 83 via a tenth information line 90.

The stack handling device 61 is connected to the control device 83 via an eleventh information line 91.

Instead of wired information lines 80 to 82, 84 to 91, 103, wireless connections are possible.

The detection of the individual corrugated cardboard sheet codes 5 and the associated processing in the corrugated cardboard system are described below.

The first individual print code reading device 77 reads the corrugated cardboard individual codes 5 on the individual code web 6 that is passed there. The read corrugated cardboard individual codes 5 are evaluated in the associated evaluation unit and the useful information / s obtained therefrom is fed to the control device 83 via the first information line 80.

In accordance with this useful information, the control device 83 individually controls the preheating device 35 via the fourth information line 84, the gluing unit 39 via the fifth information line 85 and / or the connecting device 42 via the sixth information line 86. The preheating device 35, the gluing unit 39 and / or the connecting device 42 is adjusted or actuated in accordance with the read useful information / s, if necessary.

The second individual print code reading device 78 reads the corrugated cardboard individual codes 5 on the individual code web 6 that is passed there. The read corrugated cardboard individual codes 5 are evaluated in the associated evaluation unit and the useful information / s obtained therefrom is fed to the control device 83 via the second information line 82.

In accordance with this useful information, the control device 83 controls the short cross-cutting device 46 via the seventh information line 87, the slitter / scoring device 48 via the eighth information line 88, and the cross-cutting device via the ninth information line 89 54 or the corresponding cross cutting device (s) 55, via the tenth information line 90 the respective storage device (s) 59 and / or via the eleventh information line 91 the stack handling device 61 accordingly individually. The short cross cutting device 46, the longitudinal cutting / creasing device 48, the cross cutting device 54 or the corresponding cross cutting device (s) 55, the respective storage device (s) 59 and / or the stack handling device 61 is corresponding to the read useful information adjusted or actuated if necessary.

The third individual print code reading device 79 reads the corrugated cardboard individual codes 5 on the corrugated cardboard sheets 58 conveyed past. The read corrugated cardboard individual codes 5 are evaluated in the associated evaluation unit and the useful information / s obtained therefrom is fed to the control device 83 via the third information line 103. In particular, the position of the corrugated cardboard sheets 58 can thus be tracked. This useful information (s) is / are preferably also supplied to at least one downstream processing / processing station or its controller (s) 106.

In extreme cases, at least one processing device 35, 39, 42, 46, 48, 54, 59, 61 is individually adjusted for each corrugated cardboard sheet 58. Often, however, only individual processing devices 35, 39, 42, 46, 48, 54, 59, 61 or groups are adjusted.

The following will refer to Figure 3 described a second embodiment, reference being made explicitly to the previous description. Structurally identical parts are given all the reference numerals as in the previous embodiment.

In contrast to the previous embodiment, the second individual print code reading device 78 is in information connection via the second information line 82 with a short cross-cutting device control device 92, which in turn is in information connection with the short cross-cutting device 46 via a twelfth information line 93.

A fourth individual code reading device 94 is arranged between the short cross-cutting device 46 and the longitudinal cutting / creasing device 48, that of the laminating web 34 or individual code web 6 is assigned. The fourth individual code reading device 94 is in information connection via a thirteenth information line 95 with a slitter / creaser controller 96, which in turn is in information connection with the slitter / creaser 48 via a fourteenth information line 97.

A fifth individual print code reading device 98 is arranged between the slitter / scoring device 48 and the cross-cutting device 54. It is assigned to the laminating web 34 or individual code web 6. The fifth individual print code reading device 98 is in information communication via a fifteenth information line 99 with a cross-cutting device control device 100, which in turn is in information communication with the cross-cutting device 54 via a sixteenth information line 101.

The stack handling device 61 is assigned a sixth individual code reading device 102, which is in information connection via a seventeenth information line 104 with a stack handling device controller 105 and is assigned to the respective laminating web 34 or individual code web 6.

The connections through the information lines 80, 82, 85, 86, 93 95, 97, 101, 104 can also be implemented wirelessly.

In accordance with the corrugated cardboard sheet individual code 5 read by the fourth individual print code reading device 94, the slitter / creaser control 96 controls the slitter / creaser 48 individually via the information line 97 and adjusts it if necessary.

In accordance with the corrugated cardboard sheet individual code 5 read by the fifth individual print code reading device 98, the cross-cutting device control device 100 individually controls the cross-cutting device 54 or the cross-cutting device / s 55 via the information line 101 and adjusts them if necessary. The cross cutter control device 100 is also able to control over which plane or Cross cutting device / s 55 of the corrugated cardboard sheet 58 is passed. Each sheet of corrugated cardboard 58 can thus be fed to a defined or defined stack 60.

The sixth individual print code reading device 102 reads the corrugated cardboard individual codes 5 there. The stack handling device controller 105 receives corresponding useful information via the seventeenth information line 104. It can thus be determined where the corresponding corrugated cardboard sheet 58 is located. This useful information can also be fed to at least one downstream processing / processing station or its controller (s) 106.

According to an alternative embodiment, the corrugated cardboard plant or the corrugated cardboard production line has at least one storage device for storing and dispensing at least one web already provided with individual corrugated cardboard sheet codes 5 for use as a liner and / or cover sheet for the at least three-layer corrugated cardboard web 4. The at least one storage device is designed for example as a splicer.

Claims (15)

Corrugated cardboard plant, comprehensive a) at least one corrugated cardboard manufacturing device (7) for producing at least one corrugated cardboard web (8, 28) laminated on one side with a respective corrugated web (14) and cover web (18), b) a connecting device (42) arranged downstream of the at least one corrugated cardboard manufacturing device (7) for connecting the at least one corrugated cardboard web (8, 28) and a laminating web (6, 34) to form an at least three-layer corrugated cardboard web (4), c) at least one cutting device (54) for producing corrugated cardboard sheets (58) from the at least three-layer corrugated cardboard web (4), d) at least one individual code reading device (77, 78, 79; 94, 98, 102) for reading individual corrugated cardboard sheet codes (5) on at least one of the webs (6, 14, 18, 28, 34) of the at least three-layer corrugated cardboard web ( 4) and / or on at least one of the webs (6, 8, 14, 18, 28, 34) to form the at least three-layer corrugated cardboard web (4) and / or on the corrugated cardboard sheets (58), and e) at least one corrugated cardboard system control device (83; 92, 96, 100) which is in information connection with the at least one individual code reading device (77, 78, 79; 94, 98, 102),
characterized in that f) the at least one corrugated cardboard plant control device (83; 100) is capable of individually controlling at least one corrugated cardboard sheet depositing device (59) for storing the corrugated cardboard sheets (58) in accordance with the at least one associated corrugated cardboard sheet individual code (5) read. Corrugated cardboard system according to Claim 1, characterized by at least one individual code printing device (68) arranged upstream of the at least one cutting device (54) for printing on at least one of the webs (6, 8, 14, 18, 28, 34) of the at least three-layer corrugated cardboard web (4) and / or at least one of the webs (6, 8, 14, 18, 28, 34) for forming the at least three-layer corrugated cardboard web with individual corrugated cardboard sheets (5), wherein the at least one individual code printing device (68) is preferably arranged in an individual code printing line. Corrugated cardboard system according to Claim 1 or 2, characterized by at least one storage device for storing at least one web (6, 34) already provided with individual corrugated cardboard sheets (5) as part of the at least three-layer corrugated cardboard web (4), preferably providing the at least one web ( 6, 34) with individual corrugated cardboard sheet codes (5) outside a corrugated cardboard production line or the corrugated cardboard system. Corrugated cardboard system according to one of the preceding claims, characterized in that the at least one individual code reading device (77, 78, 79; 94, 98, 102) is capable of reading individual corrugated cardboard sheets (5) which are contained, in particular with regard to them Differentiate useful information. Corrugated cardboard plant according to one of the preceding claims, characterized in that the at least one corrugated cardboard plant control device (83; 92, 96, 100) is able to track the individual corrugated cardboard sheet codes (5). Corrugated cardboard plant according to one of the preceding claims, characterized in that the at least one corrugated cardboard plant control device (83) is capable of a preheating device (35) for preheating at least one web (6, 14, 18, 28, 34) to form the at least three-ply To individually control (5) the corrugated cardboard web (4) in accordance with the at least one associated corrugated cardboard sheet code read, the preheating device (35) preferably being assigned at least one, in particular upstream, individual code reading device (77). Corrugated cardboard plant according to one of the preceding claims, characterized in that the at least one corrugated cardboard plant control device (83) is capable of a glue unit (39) for applying glue to at least one web (8, 14, 28) to form the at least three-layer corrugated cardboard web (4) to be controlled individually (5) in accordance with the at least one associated corrugated cardboard sheet code read, preferably the Glue unit (39) is assigned at least one, in particular upstream, individual code reading device (77). Corrugated cardboard system according to one of the preceding claims, characterized in that the at least one corrugated cardboard layer control device (83) is able to individually control the connecting device (42) in accordance with the at least one associated corrugated cardboard sheet individual code (5) read, preferably the connecting device (42 ) at least one, in particular upstream, individual code reading device (77) is arranged upstream. Corrugated cardboard system according to one of the preceding claims, characterized in that the at least one corrugated cardboard system control device (83; 100) is capable of individually controlling the cutting device (54) in accordance with the at least one associated corrugated cardboard sheet individual code (5) read, in particular in order to erroneously To remove corrugated cardboard sheets (58), preferably with the cutting device (54) being assigned at least one, in particular upstream, individual code reading device (77, 78; 94, 98). Corrugated cardboard plant according to one of the preceding claims, characterized in that the at least one corrugated cardboard plant control device (83; 92) is capable of a short cross-cutting device (46) for discharging a faulty piece of the at least three-layer corrugated cardboard web (4) corresponding to the at least one read to individually control the associated corrugated cardboard sheet individual code (5), the short cross-cutting device (46) preferably being assigned at least one, in particular upstream, individual code reading device (77, 78), the at least one corrugated cardboard system control device (83; 92) preferably being assigned It is able to automatically issue an order to reproduce the defective, in particular rejected, piece of the at least three-layer corrugated cardboard web (4). Corrugated cardboard plant according to one of the preceding claims, characterized in that the at least one corrugated cardboard plant control device (83; 96) is capable of a longitudinal cutting / creasing device (48) for longitudinally cutting and creasing the at least three-ply Individually control corrugated cardboard web (4) in accordance with the at least one associated corrugated cardboard sheet individual code (5) read, preferably at least one, in particular upstream, individual code reading device (77, 78; 94) being assigned to the slitter / scoring device (48). Corrugated cardboard system according to one of the preceding claims, characterized in that at least one, in particular upstream, individual code reading device (77, 78; 94, 98) is assigned to the at least one corrugated cardboard sheet depositing device (59). Corrugated cardboard plant according to one of the preceding claims, characterized in that the at least one corrugated cardboard plant control device (83; 102) is capable of a stack handling device (61) for handling the corrugated cardboard sheets (58) stacked in at least one stack (60) in accordance with the to individually control at least one associated corrugated cardboard sheet individual code (5), the stack handling device (61) preferably being assigned at least one individual code reading device (77, 78; 94, 98, 102). Corrugated cardboard plant according to one of the preceding claims, characterized in that several of the processing devices (35, 39, 42, 46, 48, 54, 59, 61) are present, at least two of which are in information communication with one another and communicate with one another. A method of making corrugated cardboard comprising the steps of: - Manufacture of at least one corrugated cardboard web (8, 28) laminated on one side with a respective corrugated web (14) and cover web (18) by means of at least one corrugated cardboard manufacturing device (7), Connecting the at least one corrugated cardboard web (8, 28) and a laminating web (6, 34) to form an at least three-layer corrugated cardboard web (4) with one another by means of a connecting device (42) arranged downstream of the at least one corrugated cardboard manufacturing device (7), - producing corrugated cardboard sheets (58) from the at least three-layer corrugated cardboard web (4) by means of at least one cutting device (54), - Reading individual corrugated cardboard sheet codes (5) on at least one of the webs (6, 14, 18, 28, 34) of the at least three-layer corrugated cardboard web (4) and / or on at least one of the webs (6, 8, 14, 18, 28 , 34) for forming the at least three-layer corrugated cardboard web (4) and / or on the corrugated cardboard sheets (58) by means of at least one individual code reading device (77, 78, 79; 94, 98, 102), with the at least one individual code reading device ( 77, 78, 79; 94, 98, 102) at least one corrugated cardboard plant control device (83; 92, 96, 100) is in information connection, and - Individual control of a corrugated cardboard storage device (59) for storing the corrugated cardboard sheets (58) according to the at least one associated corrugated cardboard sheet individual code (5) read by means of the at least one corrugated cardboard system control device (83; 100).

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