CORRUGATED-BOARD MACHINE

Abstract

The invention relates to corrugated-board machine with a print-web printing line, which comprises a print-web unrolling device for the unrolling of a print-web and a printing device for printing the print-web. Furthermore, the corrugated-board machine has a corrugated-board manufacturing line with a cover-web unrolling device for the unrolling of a cover-web, a material-web unrolling device for the unrolling of a material-web to be corrugated, a device for manufacturing a corrugated-board web laminated on one side from the cover-web and the material-web, a lamination-web unrolling device for the unrolling of a lamination-web and a gluing unit for applying glue to the corrugated-board web laminated on one side. The corrugated-board machine further comprises a print-web transfer arrangement for transferring the print-web to the corrugated-board manufacturing line and for the use of the same as a lamination-web.

Claims

1. A corrugated-board machine, with a) a print-web printing line (2) for manufacturing a printed print-web (5), comprising i) a print-web unrolling device (59) for unrolling a print-web (5) to be printed, and ii) a printing device (74) for printing the print-web (5), b) a corrugated-board manufacturing line (1) for manufacturing a corrugated-board web (4), comprising i) a cover-web unrolling device (10) for unrolling a cover-web (17), ii) a material-web unrolling device (11) for unrolling a material-web (23) to be corrugated, iii) a device (8) for manufacturing a corrugated-board web (9) laminated on one side made from the cover-web (17) and the material web (23), iv) a lamination-web unrolling device (40) for unrolling a lamination-web (46), and v) a gluing-unit (52) for applying glue to the corrugated-board web (9) laminated on one side, and c) a print-web transfer arrangement (3) disposed downstream of the print-web printing line (2) and adjoining the corrugated-board manufacturing line (1) for transferring the print-web (5) to the corrugated-board manufacturing line (1) and using as a laminated web (46).

2. A corrugated-board machine according to claim 1, wherein the print-web printing line (2) and the corrugated-board manufacturing line (1) extend at least in regions parallel and laterally offset relative to one another.

3. A corrugated-board machine according to claim 1, wherein the print-web printing line (2) conveys the print-web (5) in contrary motion to the corrugated-board web (9) laminated on one side and conveyed adjacently in the corrugated-board manufacturing line (1).

4. A corrugated-board machine according to claim 1, wherein the corrugated-board manufacturing line (1) comprises, downstream from the device (8) for manufacturing a corrugated-board web (9) laminated on one side, a storage device (37) for storing the corrugated-board web (9) laminated on one side.

5. A corrugated-board machine according to claim 4, wherein the print-web transfer arrangement (3) is connected adjacent to the storage device (37) to the corrugated-board manufacturing line (1).

6. A corrugated-board machine according to claim 1, wherein the print-web transfer arrangement (3) is connected above the material-web unrolling device (11) to the corrugated-board manufacturing line (1).

7. A corrugated-board machine according to claim 1, wherein the print-web transfer arrangement (3) is connected at approximately a vertical height of a connecting and cutting unit (97) of the material-web unrolling device (11) to the corrugated-board manufacturing line (1).

8. A corrugated-board machine according to claim 1, wherein the print-web transfer arrangement (3) extends at least in regions substantially perpendicular to at least one of the group comprising the corrugated-board manufacturing line (1) and to the print-web printing line (2).

9. A corrugated-board machine according to claim 1, wherein the print-web transfer arrangement (3) comprises a deflection arrangement for deflecting the print-web (5) from its conveying direction into a conveying direction (96) of the corrugated-board web (9) at the print-web transfer arrangement (3).

10. A corrugated-board machine according to claim 9, wherein the deflection arrangement deflects the print-web (5) through substantially 180.

11. A corrugated-board machine according to claim 1, wherein print-web printing line (2) comprises, downstream of the printing device (74), a print-web storage device (81) for storing the print-web (5).

12. A corrugated-board machine according to claim 11, wherein the print-web storage device (81) comprises a print-web winding-on unit (83) for winding on the print-web (5).

13. A corrugated-board machine according to claim 11, wherein the print-web storage device (81) comprises a dynamic print-web storage unit (82) for storing the print-web (5).

14. A corrugated-board machine according to claim 12, wherein a print-web distributing-guide arrangement (92) for guiding the print-web (5) to one of the group comprising the print-web winding-on unit (83) and the corrugated-board manufacturing line (1) is arranged between the print-web winding on unit (83) and the dynamic print-web storage unit (82).

15. A corrugated-board machine according to claim 1, wherein the lamination-web unrolling device (40) is constituted as a multiple-splicing device, which comprises a first splicing unit (47) for splicing a first laminated web (41) and a second laminated web to one another and a second splicing unit (48) for splicing the print-web (5) to one of the group comprising the first laminated web (41) and the second laminated web.

16. A corrugated-board machine according to claim 15, wherein the print-web printing line (2) is connected upstream of the lamination-web unrolling device (40) to the lamination-web unrolling device (40) for transferring the print-web (5) to the lamination-web unrolling device (40).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG. 1 shows a schematic plan view of a part of a corrugated-board machine according to the invention in a first embodiment;

[0048] FIG. 2 shows a lateral view of the corrugated-board manufacturing line of the corrugated-board machine illustrated in FIG. 1;

[0049] FIG. 3 shows a lateral view of the print-web printing line of the corrugated-board machine illustrated in FIG. 1;

[0050] FIG. 3a shows a cross-section through a corrugated-board web including the print-web, which is manufactured by the corrugated-board machine illustrated in FIG. 1;

[0051] FIG. 4 shows a view of the corrugated-board machine shown in FIG. 1 perpendicular to the conveying direction of the corrugated-board web laminated on one side with the print-web transfer device, wherein the view illustrates transferring the print-web;

[0052] FIG. 5 shows a schematic plan view of a part of a corrugated-board machine according to the invention in a second embodiment;

[0053] FIG. 6 shows a lateral view of the corrugated-board manufacturing line of the corrugated-board machine illustrated in FIG. 5; and

[0054] FIG. 7 shows a view of the corrugated-board machine illustrated in FIG. 5 corresponding to that of FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0055] With reference to FIGS. 1 to 4, a corrugated-board machine comprises a corrugated-board manufacturing line 1, a print-web printing line 2 and a print-web transfer arrangement 3 by means of which the print-web printing line 2 is connected laterally to the corrugated-board manufacturing line 1. In the corrugated-board manufacturing line 1, an endless corrugated-board web 4 can be manufactured, while an endless, printed print-web 5 can be completed in the print-web printing line 2.

[0056] The corrugated-board manufacturing line 1 is oblong. It extends straight along in a corrugated-board manufacturing-line longitudinal direction 6. The print-web printing line 2 is also constituted to be oblong. It extends straight along in a printed-board printing-line longitudinal direction 7. The print-web printing line 2 extends parallel to the corrugated-board manufacturing line 1. The print-web printing line 2 and the corrugated-board manufacturing line 1 extend side-by-side. Perpendicular to their respective longitudinal direction 6 or respectively 7, they provide a spacing distance A from one another, which is generally disposed between 1 m and 10 m, by greater preference between 2 m and 5 m. The print-web printing line 2 accordingly extends laterally offset or respectively vertically offset from the corrugated-board manufacturing longitudinal direction 6, parallel to the corrugated-board manufacturing longitudinal direction 6.

[0057] The corrugated-board manufacturing line 1 comprises a device 8 for manufacturing an endless corrugated-board web 9 laminated on one side.

[0058] A cover-web splicing device 10 and a material-web splicing device 11 are arranged upstream of the arrangement 8 for manufacturing an endless corrugated-board web laminated on one side.

[0059] The cover-web splicing device 10 comprises a first unrolling unit 14 for the unrolling of an open-ended first cover-web 12 from a first cover-web roller 13 and a second unrolling unit 16 for the unrolling of an open-ended second cover-web from a second cover-web roller 15. The open-ended first cover-web 12 and second cover-web are connected to one another in order to provide an endless first cover-web 17 by means of a connecting and cutting unit of the cover-web splicing device 10, which is not illustrated.

[0060] The material-web splicing device 11 is constituted to correspond to the cover-web splicing device 10. This comprises a third unrolling unit 19 for the unrolling of an open-ended first material web 10 from a first material-web roller 18 and a fourth unrolling unit 22 for the unrolling of an open-ended second material web 20 from a second material-web roller 21. The open-ended first material web and second material web 20 are connected to one another in order to provide an endless material web 23 by means of a connecting and cutting unit 97 of the material web splicing device 11, which is not illustrated.

[0061] The endless cover-web 17 is supplied via a heating roller 24 and a first deflection roller 25 to the arrangement 8 for manufacturing an endless corrugated-board web 9 laminated on one side, while the endless material web 23 is supplied via a second deflection roller 26 to the arrangement 8 for manufacturing an endless corrugated-board web laminated on one side.

[0062] The device 8 for manufacturing an endless corrugated-board web 9 laminated on one side comprises, for the production of an endless corrugated web 27 comprising a corrugation from the endless material web 23, a first corrugating roller 28 mounted in a rotatable manner and a second corrugating roller 29 mounted in a rotatable manner. The corrugating rollers 28, 29 form a roller gap for the passage and corrugating of the endless material web 23. Together, they form a corrugating unit. The rotational axes of the two corrugating rollers 28, 29 extend parallel to one another.

[0063] For the connection of the endless corrugated web 27 to the first endless cover-web 17 to form a corrugated-board web 9 laminated on one side, the arrangement 8 for manufacturing an endless corrugated-board web 9 laminated on one side comprises a glue-application unit 30, which comprises a glue-dosage roller 31, a glue container (not illustrated) and a glue-application roller 32. For the passage and gluing of the endless corrugated web 27, the glue-application roller 32 forms a gap with the first corrugating roller 28. The glue disposed in the glue container is applied via the glue-application roller 32 to tips of the corrugation of the endless corrugated web 27. The glue-dosage roller 31 is disposed in contact with the glue-application roller 32 and serves for the formation of a uniform glue layer on the glue-application roller 32.

[0064] The endless cover-web 17 is then fitted together with the endless corrugated web 27 provided with glue from the glue container in the device 8 in order to manufacture an endless corrugated-board web 9 laminated on one side.

[0065] For the pressing of the endless cover-web 17 against the endless corrugated web 27 provided with glue, which, in turn, is in contact in regions with the first corrugating roller 28, the device 8 for manufacturing an endless corrugated-board web 9 has a pressing module 33. The pressing module 33 is favourably embodied as a pressing-belt module. It is arranged above the first corrugating roller 28. The pressing module 33 has two deflection rollers 34 and an endless pressing belt 35, which is guided around the two deflection rollers 34.

[0066] The first corrugating roller 28 engages in regions from below in a space present between the two deflection rollers 34, so that the pressing belt 35 is deflected by the first corrugating roller 28. The pressing belt 35 presses against the endless cover-web 17, which is pressed in turn against the endless corrugated web 27 provided with glue, in contact with the first corrugating roller 28.

[0067] For the intermediate storage and buffering of the endless corrugated-board web 9 laminated on one side, this is supplied via a vertical transport unit 36 to a storage unit 37, where the latter forms loops. The storage device 37 is carried by a base frame 39.

[0068] Furthermore, the corrugated-board manufacturing line 1 has a lamination-web splicing device 40, which comprises a fifth unrolling unit 43 for the unrolling of an open-ended first lamination-web 41 from a first lamination-web roller 42, and a sixth unrolling unit 45 for the unrolling of an open-ended second lamination-web from a second lamination-web roller 44. The first lamination-web 41 and the second lamination-web are connected to one another in order to provide an endless lamination-web 46 by means of a connecting and cutting unit 47 of the lamination-web splicing device 40. By means of the first splicing unit 47, the open-ended first lamination-web 41 and the open-ended second lamination-web can be spliced to one another or respectively to the endless lamination-web 46.

[0069] The lamination-web splicing device 40 ideally further comprises a second splicing unit 48. By means of the second splicing unit 48, the endless print-web 5 can be spliced to the endless lamination-web 46. By means of the second splicing unit 48, the endless print-web 5 can be spliced to the first lamination-web 41 or the second lamination-web.

[0070] With regard to the detailed structure and precise function of the lamination-web splicing device 40, reference is made to DE 10 2015 218 321.1.

[0071] A pre-heating device 49, which comprises two pre-heating rollers 50, 51 arranged one above the other, is disposed downstream of the storage unit 37 and the lamination-web splicing device 40. The corrugated-board web 9 laminated on one side and the endless lamination-web 46, which are both partially looped around the respective pre-heating roller 50, 51, are supplied to the pre-heating device 49.

[0072] Downstream of the pre-heating device 49, the corrugated-board manufacturing line 1 has a gluing unit 52 with a gluing roller 53, which is partially immersed in a glue bath. A glue-dosage roller 54 is in contact with the gluing roller 53 in order to form a uniform glue layer on the gluing roller 53. The endless corrugated-board web 9 laminated on one side is disposed in contact with its corrugated web 27 on the gluing roller 53, so that the corrugation of the corrugated web 27 is provided with glue from the glue bath.

[0073] Downstream of the gluing unit 52, the corrugated-board manufacturing line 1 has a hot-pressing device 55 (illustrated only in part), which comprises a horizontally extending heated table 56. An endless pressing belt 58 guided around guide rollers 57 is arranged adjacent to the heated table 56. Between the pressing belt 58 and the heated table 56, a pressing gap is constituted, through which the endless corrugated-board web 9 laminated on one side and the endless lamination-web 46 are guided with the formation of the endless corrugated-board web 4 laminated on both sides.

[0074] Downstream of the hot-pressing device 55, the corrugated-board manufacturing line 1 favourably has a longitudinal cutting/creasing device (not illustrated) for the longitudinal cutting and creasing of the endless corrugated-board web 4.

[0075] Downstream of the longitudinal cutting/creasing device, the corrugated-board manufacturing line 1 preferably has a transverse cutting device (not illustrated) for the transverse cutting of corrugated-board sub-webs (not illustrated), which have been produced by the longitudinal cutting/creasing device from the endless corrugated-board web 4.

[0076] A distributing guide (not illustrated) of the corrugated-board manufacturing line 1 is arranged downstream of the transverse cutting device, in order to convey the corrugated-board sub-webs to different levels.

[0077] Further transverse cutting devices (not illustrated) of the corrugated-board manufacturing line 1 for the transverse cutting of the corrugated-board sub-webs to form corrugated-board sheets are disposed downstream of the distributing guide.

[0078] The corrugated-board sheets are preferably stacked on one another in stacking devices (not illustrated) of the corrugated-board manufacturing line 1.

[0079] The print-web printing line 2 comprises a print-web splicing device 59, which, in turn, comprises a seventh unrolling unit 62 for the unrolling of an open-ended first print-web 60 from a first print-web roller 61, and an eighth unrolling unit 64 for the unrolling of an open-ended second print-web from a second print-web roller 63. The open-ended first print-web 60 and second print-web are connected to one another in order to provide the endless print-web 5 by means of a connecting and cutting unit of the print-web splicing device 59.

[0080] Downstream of the print-web splicing device 59, the print-web printing line 2 has a pre-coating application device 65 associated with the endless print-web 5, which applies a two-dimensional pre-coating 67 to an outer side 66 of the endless print-web 5. The two-dimensional pre-coating 67 covers, in particular, substantially the full surface of the endless print-web 5 on its outer side 66, which also forms an outer side on the finished corrugated-board web 4.

[0081] Downstream of the pre-coating application device 65, the print-web printing line 2 has a pre-coating drying device 68 associated with the endless print-web 5, which dries the endless print-web 5 provided on the outer side with the pre-coating 67 or respectively the pre-coating 67.

[0082] Downstream of the pre-coating drying device 68, the print-web printing line 2 has a drawing unit 69 associated with the endless print-web 5, which conveys the endless print-web 5 or respectively draws it away from the print-web splicing device 59.

[0083] Downstream of the drawing unit 69, the print-web printing line 2 has a corona pre-treatment device 70 associated with the endless print-web 50. The corona pre-treatment device 70 comprises a corona-bearing roller 71 and at least one electrode 72 arranged adjacent to the latter. The endless print-web 5 is guided around the corona-bearing roller 71. The endless print-web 5 in this context runs through a gap which is formed by the corona-bearing roller 71 and the at least one electrode 72. Through the corona pre-treatment device 70, the outer side 66 of the endless print-web 5 is exposed to an electrical corona discharge, which leads to an oxidation of its surface. This is implemented especially in the case of a coated, endless print-web 5. This results in higher dot gains in a colour application or respectively a printing. The adhesion of a printing colour on the endless print-web 5 is improved in this manner.

[0084] Downstream of the corona-pre-treatment device 70, the print-web printing line 2 has a cleaning device 73 associated with the endless print-web 5, which cleans the endless print-web 5 at least on the outer side.

[0085] Downstream of the cleaning device 73, the print-web printing line 2 has an inkjet printing device 74 associated with the endless print-web 5, which imprints at least one imprint 75 onto the outer side of the endless print-web 5 or respectively onto the dried pre-coating 67. The pre-coating 67 is accordingly disposed between the at least one imprint 75 and the print-web 5. The at least one imprint 75 is favourably a water-based colour imprint.

[0086] Downstream of the inkjet-printing device 74, the print-web printing line 2 has an inkjet-print drying device 76 associated with the endless print-web 5, which dries the printed, endless print-web 5 or respectively its at least one imprint 75.

[0087] Downstream of the inkjet-print drying device 76, the print-web printing line 2 has a varnishing unit 77 associated with the endless print-web 5 for the full-surface application of at least one transparent overcoating layer 78 to the outer side of the endless print-web. The at least one imprint 75 is accordingly disposed between the at least one overcoating layer 78 and the pre-coating 67. The at least one overcoating layer 78 covers the full surface of the at least one imprint 75 and is in direct contact with the latter. It is favourably formed by matt varnish, which is based on water and also designated as water varnish.

[0088] Downstream of the varnishing unit 77, the print-web printing line 2 has a varnish-drying device 79 associated with the endless print-web 5, which dries the varnished, endless print-web 5 or respectively its at least one overcoating layer 78.

[0089] Downstream of the varnish-drying device 79, the print-web printing line 2 has a back-moistening device 80 associated with the endless print-web, which moistens the endless print-web 5 at least on the outer side or respectively on the side to be glued to the corrugated-board web laminated on one side.

[0090] Furthermore, the print-web printing line 2 comprises a print-web storage device 81 for the storage particularly of the printed print-web 5. The print-web storage device 81 is arranged downstream of the back-moistening device 80.

[0091] In turn, the print-web storage device 81 comprises a dynamic print-web storage unit 82 and a print-web winding-on unit 83, which is disposed downstream of the dynamic print-web storage unit 82 with reference to a conveying direction 93 of the print-web 5.

[0092] Within the dynamic print-web storage unit 82, the print-web 5 is substantially guided around several deflection rollers 84 in a meandering manner. At least one of the deflection roller is 84 can be displaced perpendicular to its rotational axis, so that the length of the print-web 5 stored in the dynamic print-web storage unit 82 is dynamically variable. At the output side of the dynamic print-web storage unit 82, a withdrawing unit 85 is arranged, which comprises at least one withdrawing roller 86 for withdrawing the print-web 5 in the direction towards the print-web transfer arrangement 3.

[0093] The print-web winding-on unit 83 disposed downstream of the dynamic print-web storage unit 82 comprises a print-web winding-on roller 88 mounted in a rotatable manner in bearing arms 87 for winding on particularly the printed print-web 5. The bearing arms 87 can favourably be pivoted about a pivoting axis 89. The bearing arms 87 are mounted in a pivoted manner on a print-web winding-on frame 90. The print-web 5 must have passed through the dynamic print-web storage unit 82 so that the latter can be wound on in the print-web winding-on unit 83.

[0094] Between the dynamic print-web storage unit 82 and the print-web winding-on unit 83, a print-web distributing-guide arrangement 91 is arranged, which is able to guide the print-web 5 to the print-web winding-on unit 83 or past the print-web winding-on unit 83 to the print-web transfer arrangement 3. For this purpose, the print-web distributing-guide arrangement 91 favourably comprises at least one distributing-guide rail 92, which extends perpendicularly there, relative to the conveying direction 93 of the print-web 5. When the print-web 5 is guided to the print-web winding-on unit 83, the print-web 5 is deflected at the print-web distributing-guide arrangement 91 either not at all or respectively only slightly by the distributing-guide rail 92. By contrast, when the print-web 5 is guided to the print-web transfer arrangement 3, and the print-web winding-on unit 83 is bypassed, the endless print-web 5 is deflected by approximately 90 at the print-web distributing-guide arrangement 91.

[0095] Downstream of the print-web distributing-guide arrangement 91, the print-web transfer arrangement 3 is arranged, which comprises a first reflection rail 94 and a second deflection rail 95.

[0096] The first deflection rail 94 is arranged adjacent to the print-web distributing-guide arrangement 91. This extends horizontally and encloses with the conveying direction 93 of the print-web 5 present there an angle w1, of 45. At the first deflection rail 94, the print-web 5 is deflected by 90 and turned through 180. The print-web 5 accordingly runs in the print-web transfer arrangement 3 perpendicular to the longitudinal direction 7 of the print-web printing line or respectively to the longitudinal direction 6 of the corrugated-board manufacturing line. The first deflection rail 94 is arranged on the base frame 39.

[0097] The second deflection rail 95 extends parallel to the first deflection rail 94. The second deflection rail 95 is disposed within the corrugated-board manufacturing line 1. The print-web 5 is deflected through 90 by the second deflection rail 95 in the direction towards the corrugated-board manufacturing longitudinal direction 6 and turned through 180. The print-web 5 is conveyed downstream to the second deflection rail 95 in the direction of the conveying direction 96 of the adjacent, endless corrugated-board web 9 laminated on one side.

[0098] The second deflection rail 95 is arranged on the base frame 39. It is arranged adjacent to the storage device 37.

[0099] The two deflection rails 94, 95 are disposed in a common horizontal plane. They are arranged at a substantially identical vertical height H1, relative to a substructure above the connecting and cutting unit 97 of the material-web splicing device 11.

[0100] In the following, a second embodiment is described with reference to FIGS. 5 to 7. By contrast with the previous embodiment, to which reference is made, the deflection rails 94, 95 are arranged lower at a vertical height H2 relative to the substructure. They are disposed at the height of the splicing units 47, 48 of the lamination-web splicing device 40. Otherwise, there are no substantial differences.