Arrangement for a corrugator

Abstract

An arrangement for a corrugator for producing corrugated cardboard comprises a material web delivery device for delivering a material web and an edge cutting device, which is arranged downstream of the material web delivery device in a transport direction of the material web and has at least one edge cutting apparatus for edge-cutting the material web, and a digital printing device, which is arranged downstream of the edge cutting device in the transport direction of the material web for printing on the material web.

Claims

1. An assembly comprising: a material web delivery device for delivering a material web; an edge cutting device, which is arranged downstream of the material web delivery device in a transport direction of the material web and has at least one edge cutting apparatus for edge-cutting the material web; a digital printing device, which is arranged downstream of the edge cutting device in the transport direction of the material web for printing on the material web; and a material web run correction arrangement arranged downstream of the edge cutting device in the transport direction of the material web for correcting a run of the material web, wherein the material web run correction arrangement has at least one material web run detection apparatus and at least one material web run correction apparatus which is at least temporarily in signal connection with said material web run detection apparatus.

2. The assembly according to claim 1, wherein the edge cutting device is capable of producing a cut which, with a line parallel to the transport direction of the material web, encloses an angle which is between 0 and 45.

3. The assembly according to claim 1, the material web run correction arrangement has a material web run actuating unit which is at least temporarily in signal connection with the at least one material web run detection apparatus and material web run correction apparatus.

4. The assembly according to claim 1, further comprising a material web detection arrangement with at least one material web detection apparatus for detecting the material web.

5. The assembly according to claim 4, wherein at least one material web detection apparatus is capable of detecting at least one edge region of the material web.

6. The assembly according to claim 4, wherein at least one material web detection apparatus is configured to detect a surface condition of the material web at least in some regions.

7. The assembly according to claim 4, wherein at least one material web detection apparatus is arranged downstream of the edge cutting device in the transport direction of the material web.

8. The assembly according to claim 4, further comprising at least one material web roll apparatus for storing at least one material web roll carrying the material web, wherein at least one material web detection apparatus of the at least one material web detection apparatus for detecting the rolled-up material web is associated with the at least one mate-rial web roll apparatus.

9. The assembly according to claim 4, wherein at least one material web detection apparatus is arranged upstream of the edge cutting device in the transport direction of the material web.

10. The assembly according to claim 8, wherein the at least one material web detection apparatus is configured to detect at least one end face of the at least one material web roll.

11. The assembly according to claim 4, further comprising an actuation arrangement which is at least temporarily in signal connection with the edge cutting device for actuating the edge cutting device, wherein the at least one material web detection apparatus is at least temporarily in signal connection with the actuation arrangement, the actuation arrangement being configured as a control and/or regulation arrangement.

12. The assembly according to claim 4, wherein the material web detection arrangement is at least temporarily in signal connection with an evaluation unit.

13. The assembly according to claim 1, further comprising an actuation arrangement which is at least temporarily in signal connection with the edge cutting device for actuating the edge cutting device, the actuation arrangement being configured as a control and/or regulation arrangement.

14. The assembly according to claim 13, wherein the actuation arrangement receives a cutting list during operation, the cutting list containing at least one piece of cutting information, wherein the edge cutting device is configured for pre-cutting the material web to a width corresponding to the cutting list.

15. The assembly according to claim 14, wherein the actuation arrangement receives a cutting list for producing the corrugated cardboard.

16. The assembly according to claim 14, wherein the edge cutting device is configured to pre-cut the material web to a width corresponding to the cutting list.

17. The assembly according to claim 14, wherein the edge cutting device is configured to pre-cut the material web with an overhang.

18. The assembly according to claim 14, wherein the edge cutting device is configured to pre-cut the material web taking into account a shrinkage of the material web.

19. The assembly according to claim 1, further comprising a material web winding device for winding up the material web cut at at least one edge, wherein the material web is windable by the material web winding device to form a material web roll, even with different widths over its longitudinal extent, in such a manner that a material web edge of the material web, extends at an end face of the material web roll and forms a material web roll standing surface.

20. The assembly according to claim 19, wherein the material web edge of the material web is aligned at the end face of the material web roll, forming a material web roll standing surface.

21. An assembly comprising: a material web delivery device for delivering a material web; an edge cutting device, which is arranged downstream of the material web delivery device in a transport direction of the material web and has at least one edge cutting apparatus for edge-cutting the material web; a digital printing device, which is arranged downstream of the edge cutting device in the transport direction of the material web for printing on the material web; and a material web winding device for winding up the material web cut at at least one edge, wherein the material web is windable by the material web winding device to form a material web roll, even with different widths over its longitudinal extent, in such a manner that a material web edge of the material web extends at an end face of the material web roll and forms a material web roll standing surface, wherein the material web roll standing surface allows the material web roll to be placed in a stable position, the material web roll standing surface forming a standing plane which extends perpendicular to a longitudinal axis of the material web roll.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIG. 1 shows is a schematic view of an arrangement according to the invention, in particular a printing arrangement, including the material web,

(2) FIG. 2 shows a perspective view illustrating the edge cutting device of the arrangement shown in FIG. 1 together with the material web,

(3) FIGS. 3, 4 shows the edge cutting apparatuses of the edge cutting device illustrated in FIG. 2 on an enlarged scale,

(4) FIG. 5 shows a section through the edge cutting device and material web shown,

(5) FIG. 6 shows a schematic view of an arrangement according to the invention, in particular a printing arrangement, together with a material web according to a further embodiment,

(6) FIG. 7 shows a plan view onto the material web after a width change,

(7) FIG. 8 shows a schematic view of an arrangement according to the invention, in particular a printing arrangement, together with a material web according to a further embodiment,

(8) FIG. 9 shows a schematic view of an arrangement according to the invention, in particular a printing arrangement, together with a material web according to a further embodiment, and

(9) FIG. 10 shows a schematic view of a winding device, a standing roll, and a material web roll standing surface.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(10) An arrangement as shown in FIG. 1, which is part of a corrugator or arranged upstream thereof, has a material web delivery device 1 which is designed as a material web splicing device. The material web delivery device 1 comprises a first unwinding unit 3 for unwinding a finite first material web from a first material web roll 2 and a second unwinding unit 5 for unwinding a finite second material web from a second material web roll 4. Each unwinding unit 3, 5 provides a horizontal unwinding axis. The finite material webs preferably have an identical width.

(11) The material web delivery device 1 has a base frame 6 with a base frame stand 7 and a base frame support 8. The base frame stand 7 is fastened in/to a floor or substrate 9 and extends vertically. The base frame support 8 is arranged at the top of the base frame stand 7 and extends horizontally at a distance from the floor 9.

(12) The first and second unwinding units 3, 5 are pivotably mounted on the base frame stand 7 and arranged opposite each other relative thereto. The finite first material web and finite second material web can be fed to a cutting and joining apparatus (not shown) of the material web delivery device 1. The cutting and joining apparatus is arranged in/on the base frame support 8. It serves to produce an endless material web 10 from the finite first and second material webs. The endless material webs are preferably bonded to each other with at least one piece of adhesive.

(13) The endless material web 10 is transported in a transport direction 11 via a pair of deflection rollers 12 to a pre-coating application device 13. The transport direction 11 is orientated along a longitudinal extent of the endless material web 10. The pre-coating application device 13 is capable of applying a flat pre-coating (not shown) to at least one side, in particular to an outer side or print side, of the endless material web 10. For this purpose, it has a pre-coating application roller 14, which extends horizontally and perpendicularly to the transport direction 11 of the endless material web 10. The pre-coating application roller 14 receives pre-coating agent from a pre-coating agent bath (not shown), directly or indirectly, and applies the latter, preferably in a dosed manner, to the endless material web 10. Above the pre-coating application roller 14, the pre-coating application device 13 has a guide roller 15, which forms a pre-coating agent application gap 16 with the pre-coating application roller 14.

(14) A pre-coating drying device 17 is arranged downstream of the pre-coating application device 13, which is capable of drying the endless material web 10 or the pre-coating applied thereto. The pre-coating drying device 17 has, for example, multiple pre-coating drying apparatuses or chambers that are arranged in series. It works, for example, with radiation, such as infrared, and/or heat, such as hot air.

(15) An inkjet printing device 18 is arranged downstream of the pre-coating drying device 17, which inkjet printing device 18 prints at least one imprint on the dried endless material web 10 or pre-coating. The at least one imprint is preferably a water-based color imprint.

(16) The inkjet printing device 18 has a central cylinder or printing cylinder 19, which extends perpendicularly to the transport direction 11 of the endless material web 10 and horizontally. Furthermore, the inkjet printing device 18 has a print head apparatus 20 or an inkjet print bar having print heads, which inkjet print bar extends at a distance in some regions around the central cylinder 19, forming a print gap 21. The endless material web 10 is largely in contact with the central cylinder 19. It is guided through the print gap 21 for printing.

(17) The print head apparatus 20 can be lifted off the endless material web 10 or the central cylinder 19 by enlarging the print gap 21, in particular upwards in this case.

(18) Preferably, the inkjet printing device 18 is followed by an inkjet printing and drying device (not shown), which dries the printed endless material web 10 or its at least one imprint. The inkjet printing and drying device works, for example, with radiation, such as infrared, and/or heat, such as hot air.

(19) Favorably, the pre-coating application device 13, pre-coating drying device 17, inkjet printing device 18 and inkjet printing and drying device are part of a digital printing arrangement.

(20) The corrugator also has at least one device for producing a corrugated cardboard web (not shown), in particular an endless corrugated cardboard web laminated on one side. Each device for producing a corrugated cardboard web laminated on one side comprises a corrugating device or a pair of corrugating rollers for producing a corrugated cardboard web. For gluing the corrugated web to a cover web, each device for producing a corrugated cardboard web laminated on one side has a glue application apparatus which applies a dosed amount of glue to the tips of the corrugation of the respective corrugated web. Each glue application apparatus has a glue application roller that receives glue, directly or indirectly, from a glue bath and applies it to the respective corrugated web. For pressing the cover web against the associated corrugated web provided with glue, each device for producing a corrugated cardboard web laminated on one side has a pressing apparatus which has, for example, at least one pressure roller and/or a pressure belt.

(21) A preheating device (not shown) with preheating rollers is preferably arranged downstream of the inkjet printing device 18 and the at least one device for producing a corrugated cardboard web laminated on one side. The preheating device is part of the corrugator. Each at least one corrugated cardboard web laminated on one side and the endless material web 10 then each wrap around a preheating roller, as a result of which they are heated.

(22) A gluing unit (not shown) of the corrugator is arranged downstream of the preheating device, where glue is applied, in particular in a dosed manner, to each corrugated web of the at least one corrugated cardboard web laminated on one side.

(23) Downstream of the gluing unit, a heating-pressing device (not shown) of the corrugator is arranged, which forms a device for producing a corrugated cardboard web laminated on both sides. The heating-pressing device comprises a horizontal heating table with heating elements and a pressure belt, which is guided around guide rollers and forms a pressure gap with the heating table. The at least one glued corrugated cardboard web laminated on one side and the endless material web 10 are guided through the pressure gap. The at least one glued corrugated cardboard web laminated on one side and the endless material web 10 are pressed together there, forming an endless corrugated cardboard web laminated on both sides. The endless material web 10 advantageously forms a laminating web. The corrugated cardboard web laminated on both sides is printed on the outside.

(24) A slitting/creasing device (not shown) for slitting and creasing the corrugated cardboard web laminated on both sides is arranged downstream of the heating-pressing device. The slitting/creasing device is part of the corrugator.

(25) The slitting/creasing device is followed by a cross-cutting device (not shown) for cross-cutting the corrugated cardboard web laminated on both sides into corrugated cardboard sheets. The cross-cutting device is part of the corrugator.

(26) Between the heating-pressing device and the slitting/creasing device, the corrugator has, for example, a short cross-cutting device (not shown), which is capable of producing a cut that extends over the entire width of the corrugated cardboard web laminated on both sides. Furthermore, it is capable of producing a cut with a certain length and a distance from at least one longitudinal edge of the corrugated cardboard web laminated on both sides. Alternatively, the short cross-cutting device can be positioned differently.

(27) An edge cutting device 22 is arranged between the pre-coating drying device 17 and the inkjet printing device 18, which edge cutting device 22 is assigned to the endless material web 10 and is capable of cutting same in its transport direction 11, i.e. in a longitudinal direction. The edge cutting device 22 is arranged above the inkjet printing device 18 and, in particular, adjacent thereto. It is arranged in the digital printing arrangement.

(28) As FIGS. 2 to 5 also illustrate, the edge cutting device 22 comprises a cross member 23 which extends horizontally and perpendicularly to the transport direction 11, preferably above or below the endless material web 10. The cross member 23 is supported, for example, against the ground 9 or the inkjet printing device 18, in particular against its housing. It is favorably rail-like. The endless material web 10 runs horizontally in the region of the edge cutting device 22.

(29) The edge cutting device 22 also comprises two separately configured edge cutting apparatuses 24, which are guided on the cross member 23 along the same, i.e. perpendicular to the transport direction 11 of the endless material web 10, or in a displaceable manner in a width or transverse direction of the endless material web 10. The edge cutting apparatuses 24 can be displaced individually or together. Each edge cutting apparatus 24 is connected or connectable to a corresponding adjustment means, such as a motor, drive, spindle, handwheel or the like.

(30) Each edge cutting apparatus 24 has a base body 25. Furthermore, each edge cutting apparatus 24 has an upper circular knife 26 and a counter body 27 arranged below the latter. The circular knife 26 and the counter body 27 of each edge cutting apparatus 24 are arranged in pairs at the associated base body 25, forming a cutting gap, and are displaceable relative to one another, for example in a vertical direction, or their distance from one another can be adjusted. It is expedient if the circular knife 26 and the counter body 27 of each edge cutting apparatus 24 is/are rotatably mounted. Favorably, at least the circular knife 26 can be driven in rotation, such as by a drive, motor or the like. The circular knife 26 and the counter body 27 of each edge cutting apparatus 24 are favorably rotatable about axes of rotation which extend horizontally and preferably parallel to one another.

(31) Each base body 25 holds a slide-like coupling part 28, which engages in guide grooves 29 arranged one above the other in the cross member 23. The guide grooves 29 extend along the cross member 23 and are at a constant vertical distance from each other. They run horizontally. The base body 25/coupling parts 28 and the cross member 23 form a linear guide.

(32) The endless material web 10 is guided between the circular knives 26 and the associated counter bodies 27 during use. It is guided through each cutting gap. Each circular knife 26 is capable of engaging in a cutting manner into the endless material web 10 at the edges during its transport and penetrating it completely. For example, it is capable of cutting off a longitudinal edge strip 30, for example an endless strip, with a constant width perpendicular to the transport direction 11. The endless material web 10 is thus cut at the edge E, if necessary, wherein the circular knives 26 then reduce the width of the endless material web 10 perpendicular to the transport direction 11. Favorably, the axes of the circular knives 26 are aligned with each other or run parallel to each other during operation. Each edge cutting apparatus 24 is designed as a slitting apparatus, which is capable of cutting the endless material web 10 at a distance from, but adjacent to, its respective longitudinal material web edge running parallel to the transport direction 11. New longitudinal edges are thus produced on the endless material web 10.

(33) A first material web detection apparatus 31 is arranged between the precoating drying device 17 and the edge cutting device 22, which first material web detection apparatus 31 is associated with the endless material web 10. The first material web detection apparatus 31 is thus arranged upstream of the edge cutting device 22.

(34) A second material web detection apparatus 32 is arranged between the edge cutting device 22 and the inkjet printing device 18, which second material web detection apparatus 32 is associated with the endless material web 10. The second material web detection apparatus 32 is thus arranged downstream of the edge cutting device 22.

(35) Each material web detection apparatus 31, 32 is capable of detecting the endless material web 10. The material web detection apparatuses 31, 32 are part of a material web detection arrangement which detects the endless material web 10 at least from its printing side or pre-coating side or from both sides.

(36) Each material web detection apparatus 31, 32 is preferably capable of detecting opposite material web longitudinal edge regions of the endless material web 10 which extend in the transport direction 11 of the endless material web 10 and which adjoin the material web longitudinal edges. In particular, the material web detection apparatuses 31, 32 can be used to detect the positions or locations of the material web longitudinal edges and a surface condition of the endless material web 10, for example over its entire width or in the material web longitudinal edge regions, as well as at least one degree of shrinkage of the endless material web 10. The material web detection apparatuses 31, 32 are designed accordingly for this purpose.

(37) Each material web detection apparatus 31, 32 is at least temporarily in signal communication with an evaluation unit 33. The evaluation unit 33 is able to receive corresponding electrical signals from the material web detection apparatuses 31, 32, which relate to or characterize the endless material web 10. It evaluates the received signals.

(38) The edge cutting device 22 and the evaluation unit 33 are at least temporarily in signal connection with an actuation arrangement 34.

(39) During operation, the first material web detection apparatus 31 detects the actual state of the endless material web 10 to be cut, in particular at least in the region of the (old/original) longitudinal edges of the endless material web 10. The actual state includes position information of the longitudinal edges of the endless material web 10, surface properties and/or at least one degree of shrinkage of the endless material web 10. The corresponding information is transmitted to the actuation arrangement 34 via the evaluation unit 33. The actuation arrangement 34 specifies cutting parameters to the edge cutting device 22 on the basis of the information received. The edge cutting apparatuses 24 are actuated accordingly. The actuation arrangement 34 also considers damage or defects in the endless material web 10 which are irremovable but which are capable of jeopardizing the print head apparatus 20 or causing further damage to the endless material web 10. Positions of irremovable damage are passed on to the inkjet printing device 18, in particular to its controller, which may allow empty print planning and/or lifting off of the print head apparatus 20 in order to avoid the damage described.

(40) The second material web detection apparatus 32 arranged downstream of the first material web detection apparatus 31 detects the actual state of the already cut endless material web 10 during operation, in particular at least in the region of the new longitudinal edges of the endless material web 10. The actual state includes position information of the new longitudinal edges of the endless material web 10, surface properties and/or at least one degree of shrinkage of the endless material web 10. The corresponding information is transmitted to the actuation arrangement 34 via the evaluation unit 33. If necessary, the cutting parameters of the edge cutting device 22 are post-corrected and the edge cutting apparatuses 24 are actuated accordingly. The actuation arrangement 34 preferably has a post-correction unit for this purpose. A post-correction is preferably carried out if the detected actual state is outside a tolerance range. The second material web detection apparatus 32 also permits checking and/or new detection of damage that is irremovable but is capable of jeopardizing the print head apparatus 20 or causing further damage to the endless material web 10. The positions of any irremovable damage are passed back to the inkjet printing device 18, in particular to its controller, which may allow empty printing to be planned and/or the print head apparatus 20 to be lifted off.

(41) The edge cutting device 22 is assembled in such a manner that the transport path of the endless material web 10 to the inkjet printing device 18, in particular to the print head apparatus 20, is as large as possible. If damage or an error is detected or analyzed on the endless material web 10, there is sufficient time to lift the print head apparatus 20 off and thus avoid damaging it or the endless material web 10. Furthermore, there is sufficient time to create an empty print planning on the system side. The actuation arrangement 34 is at least temporarily in signal communication with the inkjet printing device 18 for this purpose.

(42) For example, the circular knives 26 are adjustable in the width direction of the endless material web 10 when they are out of engagement with the endless material web 10.

(43) A second embodiment is described below with reference to FIGS. 6, 7. Identical parts are given the same reference signs as in the previous embodiment, the description of which is hereby referred to. Structurally different but functionally similar parts are given the same reference signs with a trailing a.

(44) In comparison with the previous embodiment, two further, i.e. third, material web detection apparatuses 35 are arranged at the base frame support 8. A further material web detection apparatus 35 is associated with each material web roll 2, 4. Each further material web detection apparatus 35 is capable of detecting an end face of the respective material web roll 2 or 4 from above. This end face is favorably the end face on which the material web roll 2 or 4 has been placed, for example during storage or transport. Each further material web detection apparatus 35 is at least temporarily in signal communication with the evaluation unit 33a. Alternatively, all end faces are detected.

(45) Each circular knife 26 and each associated counter body 27 are also pivotable, in particular in a controlled manner, about a pivot axis, in particular a vertical one. At least one actuating unit, such as an actuating drive, servo-motor or the like (not shown), is assigned to each circular knife 26 and each associated counter body 27 for this purpose. Each actuating unit is at least temporarily in signal connection with the actuation arrangement 34a.

(46) In comparison with the previous embodiment, a material web run correction arrangement 36 is also provided, which is arranged between the edge cutting device 22a and the print head apparatus 20 and is capable of correcting a run of the endless material web 10a, if necessary. In particular, the material web run correction arrangement 36 is capable of influencing a run of the endless material web 10a or causing a transverse deflection thereof. The endless material web 10a can thus be aligned towards the print head apparatus 20 or towards the center.

(47) The material web run correction arrangement 36 comprises a material web run correction apparatus 37, which is designed, for example, as a rotating frame and preferably has at least one upper roller and lower roller for, preferably Z-shaped, wrapping by the endless material web 10a. The rollers run parallel to each other and preferably at different heights. They are rotatably mounted.

(48) In an undeflected basic position of the rotating frame, the rollers run horizontally and one above the other. There is then no lateral deflection of the endless material web 10a.

(49) The rotating frame pivotable, for example by an actuator arrangement or a drive of the material web run correction arrangement 36, in order to deflect the endless material web 10a laterally or to change its course. For this purpose, it is pivotable in its entirety about a horizontal pivot axis, which is located between the upper roller and the lower roller. It is thus possible to correct the position or course of the endless web 10a without applying an additional tensile force to one side of the endless web 10a. The actuator arrangement rotates the rotating frame as a whole in a vertical plane. In a deflected or pivoted position of the rotating frame compared to the basic position, the rollers run parallel to each other, but at an angle to a horizontal or vertical plane.

(50) Furthermore, the material web run correction arrangement 36 has a material web run detection apparatus 38, which is capable of detecting the endless material web 10a, in particular at least one (new) longitudinal edge thereof. The material web run detection apparatus 38 is arranged downstream of the material web run correction apparatus 37. It is arranged upstream of the print head apparatus 20.

(51) The material web run correction arrangement 36 also has a material web run actuation unit 39, which is at least temporarily in signal connection with the material web run correction apparatus 37 and the material web run detecting apparatus 38. The material web run actuation unit 39 is also at least temporarily in signal connection with the actuation arrangement 34a.

(52) Operation is basically the same as in the first embodiment.

(53) Each further material web detection apparatus 35 detects the end face of the material web roll 2 or 4 held in the respective unwinding unit 3, 5 in order to detect pressure marks there. In doing so, the detected material web roll 2 or 4 can rotate about the unwinding axis.

(54) Corresponding signals are fed to the actuation arrangement 34a via the evaluation unit 33a. The actuation arrangement 34a controls the relevant edge cutting apparatus 24a accordingly. It may only be necessary to cut the endless material web 10a on one side.

(55) The second material web detection apparatus 32 again (also) detects the actual position of at least one new longitudinal edge of the endless material web 10a.

(56) The actual position of the at least one cut longitudinal edge is transmitted via the actuation arrangement 34a to the material web run actuation unit 39, which, if necessary, actuates the material web run correction apparatus 37 in such a manner that the endless material web 10a is aligned accordingly.

(57) The material web run detection apparatus 38 detects at least one new longitudinal edge of the endless material web 10a after it has passed through the material web run correction apparatus 37. An actual position of the at least one new longitudinal edge of the endless material web 10a after the material web run detection apparatus 38 is thus detected. The material web run detection apparatus 38 sends a corresponding feedback to the material web run actuation unit 39. If necessary, the run of the endless material web 10a is post-corrected.

(58) Damage to the inkjet printing device 18 or the endless material web 10a can thus be avoided particularly reliably.

(59) Each edge cutting apparatus 24a is capable of producing a longitudinal edge strip 30 with a constant width. Finite material webs of identical width can be used.

(60) FIG. 7 shows a width change of the endless material web 10a, which can also be carried out in this embodiment. Endless material webs with different widths can be joined together by the material web delivery device 1 to form the endless material web 10a. As FIG. 7 further illustrates, when the width is changed, there is conventionally a leading edge 40 on the new finite material web, which leading edge 40 extends perpendicular to the transport direction 11 of the endless material web 10a and protrudes laterally outwards in relation to the old/former finite material web. The new finite material web is wider than the old finite material web. It has been recognized that such a lateral abutting edge 40 often results in damage to the inkjet printing device 18 and/or the endless material web 10a, in particular if it protrudes towards the print head apparatus 20 with respect to the plane of the endless material web 10a. The old finite material web is formed, for example, by the finite first material web, while the new finite material web is then formed by the second material web. A reverse formation is alternatively possible.

(61) By pivoting the respective circular knife 26 and counter body 27 about the corresponding pivot axis, which extends there perpendicularly to a plane of the endless material web 10a, an inclined cut can be produced in the endless material web 10a, which permits a smooth transition between the finite material webs of different widths and prevents damage to the endless material web 10a or inkjet printing device 18. Each edge cutting apparatus 24a is actuated in such a manner that an inclined cutting line 41 is formed in the endless material web 10a relative to the transport direction 11. A wedge-shaped cut is thus made by each edge cutting apparatus 24a. Favorably, each edge cutting apparatus 24a forms an angle w of between 0 and 45 with a line 42 parallel to the transport direction 11. When the inclined cutting line 41 is produced, the corresponding circular knife 26 or its axis of rotation is correspondingly inclined to the transport direction 11 and width direction of the endless material web 10a. The axes of rotation of the circular knives 26 then also run at an angle to each other. Preferably, the longitudinal edge strips 30 have an identical width after the width change. During the width change, the longitudinal edge strips 30 have a changing width. After the width change according to FIG. 7, the endless material web 10a is wider than before. There is a symmetrical, even transition of the endless material web 10a from narrow to wide. Alternatively, a reverse width change is possible.

(62) The actuation arrangement 34a transmits at least one position and length of the respective inclined or wedge-shaped cut 41 to a controller of the inkjet printing device 18. The endless material web 10a is then not printed on or only partially printed on over the length of the inclined cut 41, which depends on the respective print job.

(63) A third embodiment is described below with reference to FIG. 8. Identical parts are given the same reference signs as in the embodiment according to FIG. 6, the description of which is hereby referred to. In this embodiment, the corrugator or a corrugator actuation arrangement 43 is included. For this purpose, a cutting list of the corrugator or corrugated cardboard production, which originates in particular from an (order) control system of the corrugator, is transmitted to the actuation arrangement 34a. The endless material web 10a is pre-cut by the edge cutting device 22a, in particular by at least one edge cutting apparatus 24a, to a corresponding nominal width, for example also with a corresponding overhang of between 30 mm and 40 mm.

(64) At least one position and length of blank prints is transmitted to the corrugator actuation arrangement 43. In this manner, an automatic discharge of blank prints and missing parts, preferably via the short cross-cutting device and/or at least one cross-cutting device of the corrugator, is possible. The corrugator actuation arrangement 43 is at least temporarily in signal communication with the evaluation unit 33a and/or the inkjet printing device 18, in particular the controller of the latter.

(65) In the corrugator, the endless material web 10a is checked with regard to the cutting pattern and print image. A corresponding target/actual comparison is carried out upstream of the device for producing a corrugated cardboard web laminated on both sides and, favorably, adjacent to it. A corresponding target/actual comparison is also carried out downstream of the device for producing a corrugated cardboard web laminated on both sides and preferably adjacent to it. A corresponding target/actual comparison is also carried out downstream of the slitting/creasing device and preferably adjacent to it. In the event of faulty cuts, a direct post-correction is initiated if necessary. Preferably, feedback to a higher-level control system with a job-specific experience database is also possible.

(66) Such inclusion of the corrugator or corrugator actuation arrangement 43 is also possible in other embodiments.

(67) A fourth embodiment is described below with reference to FIG. 9. Identical parts are given the same reference signs as in the embodiment shown in FIG. 6, the description of which is hereby explicitly referred to.

(68) In comparison with the embodiment according to FIG. 6, the edge cutting device 22a is arranged between the material web delivery device 1 and the pre-coating application device 13. The first material web detection apparatus 31 is thus arranged between the edge cutting device 22a and the material web unwinding device 1. The second material web detection apparatus 32 is arranged between the edge cutting device 22a and the pre-coating application device 13. Experience has shown that no protruding or elevated edges or edge regions are produced on the endless material web 10a after it leaves the material web delivery device 1. The edge cutting device 22a is thus arranged directly adjacent to the material web delivery device 1. The inkjet printing arrangement 18 can thus be particularly compact. Defects or faults can already be removed prior to the pre-coating application device 13. Alternatively, a design without a material web run correction arrangement 36 is possible. Alternatively, a design without third material web detection apparatuses 35 is possible.

(69) FIG. 10 schematically shows a winding device W, a standing roll R, and a material web roll standing surface S.

(70) The signal connections specified here are, for example, configured to be wireless or wired.

(71) Combinations of individual embodiments are possible.