DK2845829T3 - Folding and folding device - Google Patents

Folding and folding device Download PDF

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Publication number
DK2845829T3
DK2845829T3 DK12875778.8T DK12875778T DK2845829T3 DK 2845829 T3 DK2845829 T3 DK 2845829T3 DK 12875778 T DK12875778 T DK 12875778T DK 2845829 T3 DK2845829 T3 DK 2845829T3
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DK
Denmark
Prior art keywords
folding
sheet
fold
roller
knife
Prior art date
Application number
DK12875778.8T
Other languages
Danish (da)
Inventor
Nobuyuki Kojima
Original Assignee
Horizon Int Inc
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Filing date
Publication date
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Publication of DK2845829T3 publication Critical patent/DK2845829T3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/30—Folding in combination with creasing, smoothing or application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/04—Folding sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0006—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof
    • B31F1/0009—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof of plates, sheets or webs
    • B31F1/0012—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof of plates, sheets or webs combined with making folding lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B42D15/0073—Printed matter of special format or style not otherwise provided for characterised by shape or material of the sheets
    • B42D15/008—Foldable or folded sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/18—Oscillating or reciprocating blade folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11232—Z-folded

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Description

DESCRIPTION
TECHNICAL FIELD OF THE INVENTION
[0001] The present invention relates to a creasing and folding machine for forming creases on a sheet and folding the sheet along the creases.
BACKGROUND OF THE INVENTION
[0002] A creasing and folding machine is generally configured to form creases on a sheet and fold the sheet along the creases. The conventional creasing and foldingmachine comprises : a creasing mechanism for forming the creases on the sheet; a folding mechanism for receiving the sheet from the creasing mechanism and folding the sheet along the creases; and a controller for controlling operations of the creasing mechanism and the folding mechanism (see, for example, Patent Document 1 and Patent Document 2).
[0003] The creasing mechanism comprises: a conveying roller for conveying the sheet, and a creasing section for creasing the sheet which is delivered from the conveying roller. The folding mechanism comprises: a plurality of folding knives for pressing the sheet along the creases at their edges; and a plurality of pairs of folding rollers each of which is composed of two folding rollers disposed opposite to each other with a gap therebetween, the gaps being opposite to the edges of the folding knives. The sheet is pressed by the folding knives, and inserted into the gaps, and then folded along the creases.
[0004] There are two ways for folding the sheet along the crease. As shown in Fig. 16A, one way is pressing a recess side of the crease by the folding knife and folding the sheet along the crease in the same direction as the fold direction of the crease. As shown in Fig. 16B, the other way is pressing a protrusion side of the crease by the folding knife and folding the sheet along the crease in a direction opposite to the fold direction of the crease.
[0005] When the sheet is a heavy paper sheet, as shown in Fig. 16A, if the sheet is folded in the same direction as the fold direction of the crease, the appearance of the folded sheet is poor because the sheet is not folded completely. Therefore, preferably as shown in Fig. 16B, the sheet is folded in the opposite direction to the fold direction of the crease so as to fold the sheet completely.
[0006] When the sheet is a thin paper sheet, if the sheet is folded in the opposite direction to the fold direction of the crease, the appearance of the folded sheet is poor because the folded port ion of the sheet is not sharp. Therefore, the sheet is preferably folded in the same direction as the fold direction of the crease in such a way that the folded portion of the sheet is sharp.
[0007] In the conventional creasing and folding machine, the creasing section comprises: a convex block opposite to a first surface of the sheet; and a concave block opposite to a second surface of the sheet. The convex and concave blocks move toward each other so as to form the crease which provides a recess on the first surface of the sheet and a protrusion on the second surface of the sheet. Thus, the creasing section has only one set of the convex and concave blocks. As a result, the creasing section can form only one type of the crease which provides a recess on the first surface of the sheet and a protrusion on the second surface of the sheet.
[0008] In the conventional creasing and folding machine, the folding mechanism is configured to press the second surface of the sheet by first folding knife and further press the first surface of the sheet by second folding knife so as to fold the sheet two times. Thus, the sheet is folded by the first folding knife in a direction opposite to the fold direction of the crease (see Fig. 16B), and further the sheet is folded by the second folding knife in the same direction as the fold direction of the crease (see Fig. 16A). As a result, when the sheet is a heavy paper sheet, the appearance of the folded sheet is poor because the foldedportion of the sheet is not folded completely (see Fig. 16A) due to folding the sheet by the second folding knife in the same direction as the fold direction of the crease. When the sheet is a thin paper sheet, the appearance of the folded sheet is poor because the folded portion of the sheet is not sharp due to folding the sheet by the first folding knife in a direction opposite to the fold direction of the crease.
[0009]
Patent Document 1: EP 1,425,239 B Patent Document 2: DE 101 18 133 A1
SUMMARY OF THE INVENTION
PROBLEMS TO BE SOLVED BY THE INVENTION
[0010] It is an object of the present invention to provide a creasing and folding machine which can achieve the folding with good appearance by selecting the press of the protrusion side of the crease or the press of the recess side of the crease depending on both heavy and thin paper sheets.
SOLUTION TO THE PROBLEMS
[0011] In order to achieve the obj ects, the present invention provides a creasing and folding machine, comprising: a creasing mechanism for forming a plurality of creases on a sheet; a folding mechanism for receiving the sheet from the creasing mechanism and folding the sheet along the creases; and a controller for controlling operations of the creasing mechanism and the folding mechanism; wherein the creasing mechanism comprises: a conveying roller for conveying the sheet; and a creasing section for creasing the sheet which is delivered from the conveying roller; wherein the folding mechanism comprises: a plurality of folding knives for pressing the sheet along the creases at edges of the folding knives; and a plurality of pairs of folding rollers each of which is composed of two folding rollers disposed opposite to each other with a gap therebetween, the gaps being opposite to the edges of the folding knives; wherein the sheet is pressed by the folding knives so as to be inserted into the gaps and folded along the creases; wherein the creasing section comprises: first and second creasing units aligned in a conveying direction of the sheet; wherein the first creasing unit comprises: a first convex block opposite to a first surface of the sheet; and a first concave block opposite to a second surface of the sheet, the first convex and concave blocks being moved toward each other so as to form a first crease of the creases which provides a recess on the first surface of the sheet and a protrusion on the second surface of the sheet; and wherein the second creasing unit comprises: a second concave block opposite to the first surface of the sheet; and a second convex block opposite to the second surface of the sheet, the second concave and convex blocks being moved toward each other so as to form a second crease of the creases which provides a protrusion on the first surface of the sheet and a recess on the second surface of the sheet.
[0012] According to a preferred embodiment of the present invention, when the sheet is a heavy paper sheet, the controller controls the creasing and the folding mechanisms in such a way that the folding knives press a protrusion side of the first or second crease.
[0013] According to further preferred embodiment of the present invention, when the sheet is a thin paper sheet, the controller controls the creasing and the folding mechanisms in such a way that the folding knives press a recess side of the first or second crease.
[0014] According to further preferred embodiment of the present invention, the folding mechanism comprises: the pairs of the folding rollers including two folding roller pairs, a first folding roller pair of the two folding roller pairs composed of a first folding roller and a second folding roller, and a second folding roller pair of the two folding roller pairs composed of the second folding roller and a third folding roller; and the folding knives including first and second folding knives; wherein a first folding unit is composed of the first folding roller pair and the first folding knife, wherein a second folding unit is composed of the second folding roller pair and the second folding knife, wherein the first folding unit folds the sheet in such a way that the first folding knife presses the first or second crease from the second surface of the sheet to the first surface of the sheet and inserts the sheet into the gap between the first and second folding rollers, wherein the second folding unit folds the sheet in such a way that the second folding knife presses the first or second crease from the first surface of the sheet to the second surface of the sheet and inserts the sheet into the gap between the second and third folding rollers, and wherein when the sheet is a heavy paper sheet, the controller controls the creasing and the folding mechanisms in such a way that the second creasing unit forms the second crease after the first creasing unit forming the first crease, and the first folding knife presses the protrusion side of the first crease, and then the second folding knife presses the protrusion side of the second crease.
[0015] According to further preferred embodiment of the present invention, the folding mechanism comprises: the pairs of the folding rollers including two folding roller pairs, a first folding roller pair of the two folding roller pairs composed of a first folding roller and a second folding roller, and a second folding roller pair of the two folding roller pairs composed of the second folding roller and a third folding roller; and the folding knives including first and second folding knives; wherein a first folding unit is composed of the first folding roller pair and the first folding knife, wherein a second folding unit is composed of the second folding roller pair and the second folding knife, wherein the first folding unit folds the sheet in such a way that the first folding knife presses the first or second crease from the second surface of the sheet to the first surface of the sheet and inserts the sheet into the gap between the first and second folding rollers, wherein the second folding unit folds the sheet in such a way that the second folding knife presses the first or second crease from the first surface of the sheet to the second surface of the sheet and inserts the sheet into the gap between the second and third folding rollers, and wherein when the sheet is a thin paper sheet, the controller controls the creasing and the folding mechanisms in such a way that the first creasing unit forms the first crease after the second creasing unit forming the second crease, and the first folding knife presses the recess side of the second crease, and then the second folding knife presses the recess side of the first crease.
EFFECT OF THE INVENTION
[0016] According to the present invention, the creasing section comprises first and second creasing units which are aligned in a conveying direction of the sheet. The first creasing unit comprises: a first convex block opposite to the first surface of the sheet; and a first concave block opposite to the second surface of the sheet. The first convex and concave blocks move toward each other so as to form a first crease which provides a recess on the first surface of the sheet and a protrusion on the second surface of the sheet. The second creasing unit comprises : a second concave block opposite to the first surface of the sheet; and a second convex block opposite to the second surface of the sheet. The second concave and convex blocks move toward each other so as to form a second crease which provides a recess on the second surface of the sheet and a protrusion on the first surface of the sheet.
[0017] In case that a folding knife is configured to press the second surface of the sheet, when the first creasing unit forms the crease and provides the protrusion on the second surface of the sheet, the folding knife can press the protrusion side of the crease. Therefore, it is possible to fold a heavy paper sheet with good appearance.
[0018] Further, in this case, when the second creasing unit forms the crease and provides the recess on the second surface of the sheet, the folding knife can also press the recess side of the crease. Therefore, it is also possible to fold a thin paper sheet with good appearance.
[0019] As above described, according to the creasing and folding machine of the present invention, the first and second folding units comprise two pairs of the concave and convex blocks which are disposed in different direction from each other. It is possible to form two types of the creases whose protrusion and recess sides are inverted each other. Thus, the sheet can be folded in two ways: in one way the folding knife presses the protrusion side of the crease, in the other way the folding knife presses the recess side of the crease. In the same way, the sheet can be folded in the direction same as or opposite to the fold direction of the crease. Consequently, it is possible to fold the sheet with good appearance for both heavy and thin paper sheets.
BRIEF DESCRIPTION OF THE DRAWING
[0020]
Fig. 1 is a side view schematically showing a creasing and folding machine according to one embodiment of the present invention.
Fig. 2 is a side view schematically showing an operation of a creasing mechanism when a sheet is a heavy paper sheet.
Fig. 3 is a side view schematically showing the operation of the creasing mechanism following Fig. 2.
Fig. 4 is a side view schematically showing an operation of a folding mechanism following Fig. 3.
Fig. 5 is a side view schematically showing the operation of the folding mechanism following Fig. 4.
Fig. 6 is a side view schematically showing the operation of the folding mechanism following Fig. 5.
Fig. 7 is a side view schematically showing the operation of the folding mechanism following Fig. 6.
Fig. 8 is a side view schematically showing the operation of the folding mechanism following Fig. 7.
Fig. 9 is a side view schematically showing the operation of the creasing mechanism when a sheet is a thin paper sheet.
Fig. 10 is a side view schematically showing the operation of the folding mechanism following Fig. 9.
Fig. 11 is a side view schematically showing the operation of the folding mechanism following Fig. 10.
Fig. 12 is a side view schematically showing the operation of the folding mechanism following Fig. 11.
Fig. 13 is a side view schematically showing the operation of the folding mechanism following
Fig. 12.
Fig. 14 is a side view schematically showing the operation of the folding mechanism following Fig. 13.
Fig. 15 is a side view schematically showing the operation of the folding mechanism following Fig. 14.
Fig. 16A is a side view schematically showing a paper folded in the same direction as a fold direction of a crease by a folding knife pressing a recess side of the crease when a sheet is a heavy paper sheet.
Fig. 16B is a side view schematically showing the paper folded in opposite direction to the fold direction of the crease by the folding knife pressing a protrusion side of the crease when the sheet is the heavy paper sheet.
DETAILED EXPLANATION OF THE PREFERRED EMBODIMENTS
[0021] A preferred embodiment of a creasing and folding machine according to the present invention will be explained below with reference to the accompanying drawings.
[0022] As shown in Fig. 1, the creasing and folding machine comprises a creasing mechanism 1 for forming a plurality of creases on a sheet S. The creasing and folding machine further comprises a folding mechanism 2 for folding the sheet S along the creases. The sheet S is conveyed from the creasing mechanism 1. The creasing and folding machine further comprises a controller 3 for controlling operations of the creasing mechanism 1 and the folding mechanism 2. The creasing mechanism 1 further comprises first and second conveying roller pairs 10, 11 for conveying the sheet S. The first and second conveying roller pairs 10, 11 are aligned in a first conveying direction F of the sheet S. The first conveying roller pair 10 is disposed at the upstream of the first conveying direction F, while the second conveying roller pair 11 is disposed at the downstream of the first conveying direction F.
[0023] The first conveying roller pair 10 comprises a first drive roller 100 and a first idle roller 101. The first drive and idle rollers 100, 101 are disposed adjacent to each other in such a way that the rotation of the first drive roller 100 causes the rotation of the first idle roller 101. The second conveying roller pair 11 comprises a second drive roller 110 and a second idle roller 111. The second drive and idle rollers 110, 111 are disposed adjacent to each other in such a way that the rotation of the second drive roller 110 causes the rotation of the second idle roller 111.
[0024] The first and second idle rollers 101, 111 are disposed opposite to the first surface (upper surface) S1 of the sheet S, while the first and second drive rollers 100, 110 support the second surface (lower surface) S2 of the sheet S thereon.
[0025] The creasing mechanism 1 comprises a creasing section 45 for creasing the sheet S. The creasing section 45 is disposed between the first and second conveying roller pairs 10, 11. The creasing section 45 comprises first and second creasing units 4, 5. The first and second creasing units 4, 5 are aligned in a first conveying direction F of the sheet S. The first creasing unit 4 is disposed at the upstream of the first conveying direction F, while the second creasing unit 5 is disposed at the downstream of the first conveying direction F.
[0026] The first creasing unit 4 comprises first convex and concave blocks 40, 41. The first convex block 40 is disposed opposite to the first surface (upper surface) S1 of the sheet S, while the first concave block 41 is disposed opposite to the second surface (lower surface) S2 of the sheet S. The first convex and concave blocks 40, 41 extend horizontally and perpendicular to the first conveying direction F respectively. The first convex and concave blocks 40, 41 can be engaged with each other. The first convex block 40 is fixed, while the first concave block 41 is reciprocated by a first creasing drive mechanism 42. During reciprocal movement, the first concave block 41 moves toward and away from the first convex block 40. When the first convex and concave blocks 40, 41 are engaged with each other, the sheet S is nipped between the first convex and concave blocks 40, 41 so as to form a first crease 400. The first crease 400 is depressed in the first surface S1 of the sheet S and projected on the second surface S2 of the sheet S. In the same way, the first crease 400 provides a recess on the first surface S1 of the sheet S and a protrusion on the second surface S2 of the sheet S.
[0027] The second creasing unit 5 comprises second convex and concave blocks 50, 51. The second convex block 50 is disposed opposite to the second surface (lower surface) S2 of the sheet S, while the second concave block 51 is disposed opposite to the first surface (upper surface) S1 of the sheet S. The second convex and concave blocks 50, 51 extend horizontally and perpendicular to the first conveying direction F respectively. The second convex and concave blocks 50, 51 can be engaged with each other. The second concave block 51 is fixed, while the second convex block 50 is reciprocated by a second creasing drive mechanism 52. During the reciprocal movement, the second convex block 50 moves toward and away from the second concave block 51. When the second convex and concave blocks 50, 51 are engaged with each other, the sheet S is nipped between the second convex and concave blocks 50, 51 so as to form a second crease 500. The second crease 500 is projected on the first surface S1 of the sheet S and depressed in the second surface S2 of the sheet S. In the same way, the second crease 500 provides a protrusion on the first surface S1 of the sheet S and a recess on the second surface S2 of the sheet S.
[0028] The folding mechanism 2 comprises first, second and thirdfoldingrollers20, 21,22. The foldingmechanism2 comprises first and second folding knives 23, 24. The first and second folding rollers 20, 21 are aligned in the first conveying direction F. The first and second folding rollers 20, 21 are disposed adjacent to each other with a small first gap 201 therebetween. An edge 23a of the first folding knife 23 is opposite to the first gap 201. The second and third rollers 21, 22 are aligned in a second conveying direction F'. The second conveying direction F' is arranged at approximately right angle to the first conveying direction F. The second and third folding rollers 21, 22 are disposed adjacent to each other with a small second gap 202 therebetween. An edge 24a of the second folding knife 24 is opposite to the second gap 202.
[0029] The first folding knife 23 is reciprocated by a first knife drive mechanism 230. During the reciprocal movement, the first folding knife 23 moves toward and away from the first gap 201 in a direction perpendicular to the first conveying direction F. The first folding knife 23 presses the creases 400, 500 of the sheet S from the second surface S2 of the sheet S to the first surface S1 of the sheet S.
[0030] The second folding knife 24 is reciprocated by a second knife drive mechanism 240. During the reciprocal movement, the second folding knife 24 moves toward and away from the second gap 202 in a direction perpendicular to the second conveying direction F'. The second folding knife 24 presses the creases 400, 500 of the sheet S from the first surface S1 of the sheet S to the second surface S2 of the sheet S.
[0031] The folding mechanism 2 comprises first, second and third press rollers 200, 210, 220. The first folding and press rollers 20, 200 nip the sheet S, the second folding and press rollers 21,210 nip the sheet S, and the third folding and press rollers 22, 220 nip the sheet S.
[0032] A first folding unit 6 is composed of the first and second folding rollers 20, 21 and the first folding knife 23. A second folding unit 7 is composed of the second and third folding rollers 21,22 and the second folding knife 24. The creasing mechanism 1 forms the creases 400, 500 on the sheet S, and the first folding unit 6 folds the sheet S along the creases 400, 500, and then the second folding unit 7 folds the sheet S along the creases 400, 500.
[0033] The creasing and folding machine comprises a motor 12 composed of a servomotor, a stepping motor and so on. The motor 12 is connected to the first and second drive rollers 100, 110 and the second folding roller 21 through a first timing belt 121. The drive of the motor 12 causes the rotations of the first and second drive rollers 100, 110 and the second folding roller 21. The first and third folding rollers 20, 22 are connected to each other through a second timing belt 122. The rotation of the second folding roller 21 causes the rotations of the first and third folding rollers 20, 22. The rotation of the motor 12 in a counterclockwise direction causes the counterclockwise rotations of the first and second drive rollers 100, 110 and the second folding roller 21. The rotation of the second folding roller 21 in a counterclockwise direction causes the clockwise rotations of the first and third folding rollers 20, 22.
[0034] The creasing and folding machine comprises position sensors 13, 13 which are disposed at the entrance of the creasing mechanism 1. For example, the position sensors 13, 13 are composed of light emitting and receiving elements for detecting an edge Sa of the sheet S. The position sensors 13, the motor 12, the first and second creasing drive mechanisms 42, 52, and the first and second folding knife drive mechanisms 230, 240 are connected to the controller 3. The controller 3 controls the operations of the creasing and folding mechanisms 1, 2 based on a preinstalled program when the position sensors 13 detect the edge Sa of the sheet S.
[0035] The first and second creasing drive mechanisms 42, 52 comprise, for example, a motor and a cam respectively. The drives of the cams of the first and second creasing drive mechanisms 42, 52 cause the reciprocal movements of the first concave block 41 and the second convex block 50. The first and second creasing drive mechanisms 42, 52 may be composed of a slide crank mechanism, a cylinder mechanism or a feed screw mechanism driven by a motor respectively.
[In case that the sheet is a heavy paper sheet] [0036] The operation of the creasing and folding machine will be explained below with reference to Figs. 2-8 in which the sheet S is a heavy paper sheet.
[0037] The controller 3 is provided with a program for handling the heavy paper sheet S. After distances from the edge Sa of the sheet S to the first and second creases 400, 500 are inputted to the controller 3, the operations of the creasing mechanism 1 and the folding mechanism 2 are controlled by the controller 3 as follows.
[0038] As shown in Fig. 2, when the position sensors 13 detect the edge Sa of the sheet S, the sheet S is conveyed in the first conveying direction F in such a way that a position to be provided with the first crease 400 arrives at the first convex and concave blocks 40, 41 by controlling the amount of the rotations of the conveying rollers 10, 11. When the position to be provided with the first crease 400 arrives at the first convex and concave blocks 40, 41, the sheet S is stopped by the stops of the conveying rollers 10, 11. The first concave block 41 moves upwardly toward the first convex block 40. As a result, the first crease 400 is formed on the sheet S. The first crease 400 provides a recess on the first surface (upper surface) S1 of the sheet S and a protrusion on the second surface (lower surface) S2 of the sheet S.
[0039] Then, as shown in Fig. 3, the sheet S is conveyed in the first conveying direction F in such a way that a position to be provided with the second crease 500 arrives at the second convex and concave blocks 50, 51 by controlling the amount of the rotation of the conveying rollers 10, 11. When the position to be provided with the second crease 500 arrives at the second convex and concave blocks 50, 51, the sheet S is stopped by the stops of the conveying rollers 10, 11. The second convex block 50 moves toward the second concave block 51. As a result, the second crease 500 is formed on the sheet S. The second crease 500 provides a protrusion on the first surface (upper surface) S1 of the sheet S and a recess on the second surface (lower surface) S2 of the sheet S.
[0040] Then, as shown in Fig. 4, the sheet S is conveyed in the first conveying direction F in such a way that the first crease 400 arrives at the edge 23a of the first folding knife 23 by controlling the amount of the rotations of the conveying roller 11 and the first folding roller 20. The sheet S is discharged from the second conveying roller 11, and then the discharged sheet S is nipped and conveyed between the first folding and press rollers 20, 200. The second press roller 210 is separated from the second folding roller 21 in order not to convey the sheet S in a direction opposite to the first conveying direction F by an inverse rotation of the second folding roller 21. When the first crease 400 arrives at the edge 23a of the first folding knife 23, the sheet S is stopped by stopping the conveying roller 11 and the first and second folding rollers 20, 21.
[0041] Then, as shown in Fig. 5, the second press roller 210 moves upwardly toward the second folding roller 21, and then the first folding knife 23 moves. The first folding roller 20 rotates in a clockwise direction, while the second folding roller 21 rotates in a counterclockwise direction. The edge 23a of the first folding knife 23 presses the first crease 400. As a result, the first crease 400 is inserted into the first gap 201 between the first and second folding rollers 20, 21. The edge 23a of the first folding knife 23 presses the protrusion side of the first crease 400. Then, the sheet S is inserted into the first gap 201 and folded along the first crease 400 and discharged from the first and second folding rollers 20, 21. The sheet S is folded in a direction opposite to the fold direction of the first crease 400.
[0042] Then, as shown in Fig. 6, the sheet S is conveyed in the second conveying direction F' in such a way that the second crease 500 arrives at the edge 24a of the second folding knife 24 by controlling the amount of the rotations of the first and second folding rollers 20, 21. The second conveying direction F' is arranged at approximately right angle to the first conveying direction F. The third press roller 220 is separated from the third folding roller 22 in order not to convey the sheet S in a direction opposite to the second conveying direction F' by an inverse rotation of the third folding roller 22. When the second crease 500 arrives at the edge 24a of the second folding knife 24, the sheet S is stopped by stopping the first and second folding rollers 20, 21.
[0043] Then, as shown in Fig. 7, the third press roller 220 moves laterally toward the third folding roller 22, and then the second folding knife 24 moves. The first folding roller 20 rotates in a clockwise direction, the second folding roller 21 rotates in a counterclockwise direction, and the third folding roller 22 rotates in a clockwise direction. The edge 24a of the second folding knife 24 presses the second crease 500. As a result, the second crease 500 is inserted into the second gap 202 between the second and third folding rollers 21, 22. The edge 24a of the second folding knife 24 presses the protrusion side of the second crease 500. Then, the sheet S is inserted into the second gap 202 and folded along the second crease 500 and discharged from the second and third folding rollers 21,22. The sheet S is folded in a direction opposite to the fold direction of the second crease 500.
[0044] As shown in Fig. 8, the sheet S is folded along the first and second creases 400, 500. As above described, the machine of the present invention can fold the heavy paper sheet S in a direction opposite to the fold directions of the first and second creases 400, 500 (see Fig. 16B). As a result, the sheet S can be folded with good appearance because the sheet S can be folded completely.
[In case that the sheet is a thin paper sheet] [0045] The operation of the creasing and folding machine will be explained below with reference to Figs. 9-15 in which the sheet S is a thin paper sheet.
[0046] The controller 3 is provided with a program for handling the thin paper sheet S. After distances from the edge Sa of the sheet S to the first and second creases 400, 500 are inputted to the controller 3, the operations of the creasing mechanism 1 and the folding mechanism 2 are controlled by the controller 3 as follows.
[0047] As shown in Fig. 9, when the position sensors 13 detect the edge Sa of the sheet S, the sheet S is conveyed in the first conveying direction F in such a way that a position to be provided with the second crease 500 arrives at the second convex and concave blocks 50, 51 by controlling the amount of the rotations of the conveying rollers 10, 11. When the position to be provided with the second crease 500 arrives at the second convex and concave blocks 50, 51, the sheet S is stopped by stopping the conveying rollers 10, 11. The second convex block 50 moves upwardly toward the second concave block 51. As a result, the second crease 500 is formed on the sheet S. The second crease 500 provides a protrusion on the first surface (upper surface) S1 of the sheet S and a recess on the second surface (lower surface) S2 of the sheet S.
[0048] Then, as shown in Fig. 10, the sheet S is conveyed in the first conveying direction F in such a way that a position to be provided with the first crease 400 arrives at the first convex and concave blocks 40, 41 by controlling the amount of the rotations of the conveying rollers 10, 11. When the position to be provided with the first crease 400 arrives at the first convex and concave blocks 40, 41, the sheet S is stopped by stopping the conveying rollers 10, 11. The first concave block 41 moves upwardly toward the first convex block 40. As a result, the first crease 500 is formed on the sheet S. The first crease 400 provides a recess on the first surface (upper surface) S1 of the sheet S and a protrusion on the second surface (lower surface) S2 of the sheet S.
[0049] Then, as shown in Fig. 11, the sheet S is conveyed in the first conveying direction F in such a way that the second crease 500 arrives at the edge 23a of the first folding knife 23 by controlling the amount of the rotations of the conveying roller 11 and the first folding roller 20. The sheet S is discharged from the second conveying roller 11, then the discharged sheet S is nipped and conveyed between the first folding and press rollers 20, 200. The second press roller 210 is separated from the second folding roller 21 in order not to convey the sheet S in a direction opposite to the first conveying direction F by an inverse rotation of the second folding roller 21. When the second crease 500 arrives at the edge 23a of the first folding knife 23, the sheet S is stopped by stopping the conveying roller 11 and the first and second folding rollers 20, 21.
[0050] Then, as shown in Fig. 12, the second press roller 210 moves upwardly toward the second folding roller 21, and then the first folding knife 23 moves. The first folding roller 20 rotates in a clockwise direction, while the second folding roller 21 rotates in a counterclockwise direction. The edge 23a of the first folding knife 23 presses the second crease 500. As a result, the second crease 500 is inserted into the first gap 201 between the first and second folding rollers 20, 21. The edge 23a of the first folding knife 23 presses the recess side of the second crease 500. Then, the sheet S is inserted into the first gap 201 and folded along the second crease 500 and discharged from the first and second folding rollers 20, 21. The sheet S is folded in the same direction as the fold direction of the second crease 500.
[0051] Then, as shown in Fig. 13, the sheet S is conveyed in the second conveying direction F' in such a way that the first crease 400 arrives at the edge 24a of the second folding knife 24 by controlling the amount of the rotations of the first and second folding rollers 20, 21. The second conveying direction F' is arranged at approximately right angle to the first conveying direction F. The third press roller 220 is separated from the third folding roller 22 in order not to convey the sheet S in a direction opposite to the second conveying direction F' by an inverse rotation of the third folding roller 22. When the first crease 400 arrives at the edge 24a of the second folding knife 24, the sheet S is stopped by stopping the first and second folding rollers 20, 21.
[0052] Then, as shown in Fig. 14, the third press roller 220 moves laterally toward the third folding roller 22, and then the second folding knife 24 moves. The first folding roller 20 rotates in a clockwise direction, the second folding roller 21 rotates in a counterclockwise direction, and the third folding roller 22 rotates in a clockwise direction. The edge 24a of the second folding knife 24 presses the first crease 400. As a result, the first crease 400 is inserted into the second gap 202 between the second and third folding rollers 21, 22. The edge 24a of the second folding knife 24 presses the recess side of the first crease 400. Then, the sheet S is inserted into the second gap 202 and folded along the first crease 400 and discharged from the second and third folding rollers 21, 22. The sheet S is folded in the same direction as the fold direction of the first crease 400.
[0053] As shown in Fig. 15, the sheet S is folded along the first and second creases 400, 500. As above described, the machine of the present invention can fold the thin paper sheet S in the same direction as the folddirections of the first and second creases 400, 500 (see Fig. 16A). As a result, the sheet S can be folded with good appearance because the folded portion of the sheet S can be sharp.
DESCRIPTION OF THE REFERENCE CHARACTERS
[0054] 1 creasing mechanism 2 folding mechanism 3 controller 45 creasing section 4 first creasing unit 40 first convex block 41 first concave block 42 first creasing drive mechanism 5 second creasing unit 50 second convex block 51 second concave block 52 second creasing drive mechanism 400 first crease 500 second crease 10 first conveying roller 100 fist drive roller 101 first idle roller 11 second conveying roller 110 second drive roller 111 second idle roller 6 first folding unit 7 second folding unit 20 first folding roller 21 second folding roller 22 third folding roller 23 first folding knife 23a edge of the first folding knife 230 first folding knife drive mechanism 24 second folding knife 24a edge of the second folding knife 240 second folding knife drive mechanism 201 first gap 202 second gap 200 first press roller 210 second press roller 220 third press roller 12 motor 13 position sensor 121 first timing belt 122
second timing belt S sheet 51 first surface of the sheet 52
second surface of the sheet F first conveying direction F' second conveying direction
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.
Patent documents cited in the description • EP1425239R [00091 • DE10118f 33A1 fOOOSl

Claims (5)

1. Indretning til foldning og falsning, omfattende: en foldningsmekanisme (1) til dannelse afen flerhed af folder på et ark (S); en falsningsmekanisme (2) til optagelse af arket (S) fra foldningsmekanismen (1) og falsning af arket (S) langs folderne; og en styreenhed (3) til at styre driften af foldningsmekanismen (1) og falsningsmekanismen (2); hvor hvor foldningsmekanismen (1) omfatter: en transportrulle (10,11) til transport af arket (S); og et foldningsafsnit (45) til foldning af arket (S), som leveres fra transportrullen (10,11); hvor hvor falsningsmekanismen (2) omfatter: en flerhed af falsningsknive til presning af arket (S) langs folderne ved kanter af falsningsknivene; og en flerhed af falsningsrullepar, som hver især består af to falsningsruller, der er anbragt over for hinanden med et mellemrum derimellem, hvor mellemrummene befinder sig overfor kanterne af falsningsknivene; hvor arket (S) presses af falsningsknivene for at indsættes i mellemrummene og falses langs folderne; kendetegnet ved, at foldningsafsnittet (45) omfatter: første og anden falsningsenhed (4,5), der er på linje i en transportretning (F, F') af arket (S); hvor den første foldningsenhed (4) omfatter: en første konveks klods (40) overfor en første flade af arket (S1); og en første konkav klods (41) over for en anden flade af arket (S2), hvor den første konvekse og konkave klods bevæges mod hinanden for at danne en første fold (400) af folderne, hvilket giver en udsparing på den første flade af arket (S1) og et fremspring på den anden flade af arket (S2); og hvor den anden foldningsenhed (5) omfatter: en anden konkav klods (51) over for den første flade af arket (S1); og en anden konveks klods (50) over for den anden flade af arket (S2), hvor den anden konkave og konvekse klods bevæges mod hinanden for at danne en anden fold (500) af folderne, hvilket giver et fremspring på den første flade af arket (S1) og en udsparing på den anden flade af arket (S2).A folding and folding device, comprising: a folding mechanism (1) for forming a plurality of folds on a sheet (S); a folding mechanism (2) for receiving the sheet (S) from the folding mechanism (1) and folding the sheet (S) along the folds; and a control unit (3) for controlling the operation of the folding mechanism (1) and the folding mechanism (2); wherein the folding mechanism (1) comprises: a transport roller (10,11) for transporting the sheet (S); and a folding section (45) for folding the sheet (S) provided from the transport roll (10,11); wherein the folding mechanism (2) comprises: a plurality of folding knives for pressing the sheet (S) along the folds at edges of the folding knives; and a plurality of folding roller pairs, each of which consists of two folding rollers disposed opposite each other at a space therebetween, the spaces being opposite the edges of the folding blades; wherein the sheet (S) is pressed by the folding blades to be inserted into the spaces and folded along the folds; characterized in that the folding section (45) comprises: first and second folding units (4,5) aligned in a transport direction (F, F ') of the sheet (S); the first folding unit (4) comprising: a first convex block (40) opposite a first face of the sheet (S1); and a first concave block (41) opposite a second face of the sheet (S2), wherein the first convex and concave block is moved toward each other to form a first fold (400) of the folds, providing a recess on the first face of the sheet (S1) and a projection on the second face of the sheet (S2); and wherein the second folding unit (5) comprises: a second concave block (51) opposite the first face of the sheet (S1); and a second convex block (50) opposite the second face of the sheet (S2), the second concave and convex block moving toward each other to form a second fold (500) of the folds, giving a projection on the first face of the sheet (S1) and a recess on the second face of the sheet (S2). 2. Indretning til foldning og falsning ifølge krav 1, hvor når arket (S) er et ark af tungt papir, vil styreenheden (3) styre foldnings- og falsningsmekanismerne (1,2) på en sådan måde, at falsningsknivene presser en fremspringsside af den første eller anden fold.A folding and folding device according to claim 1, wherein when the sheet (S) is a sheet of heavy paper, the controller (3) will control the folding and folding mechanisms (1,2) in such a way that the folding knives press a projection side of the first or second fold. 3. Indretning til foldning og falsning ifølge krav 1, hvor når arket (S) er et ark af tyndt papir, vil styreenheden (3) styre foldnings- og falsningsmekanismerne (1,2) på en sådan måde, at falsningsknivene presser en udsparingsside af den første eller anden fold.A folding and folding device according to claim 1, wherein when the sheet (S) is a sheet of thin paper, the controller (3) controls the folding and folding mechanisms (1,2) in such a way that the folding knives press a recess side of the first or second fold. 4. Indretning til foldning og falsning ifølge krav 1, hvor hvor falsningsmekanismen (2) omfatter: falsningsrulleparrene, som omfatter to falsningsrullepar, hvor et første falsningsrullepar (20,21) af de to falsningsrullepar består af en første falsningsrulle (20) og en anden falsningsrulle (21), og et andet falsningsrullepar (21,22) af de to falsningsrullepar består af den anden falsningsrulle (21) og en tredje falsningsrulle (22); og falsningsknivene, som omfatter en første og anden falsningskniv; hvor en første falsningsenhed (6) består af det første falsningsrullepar (20,21) og den første falsningskniv (23), hvor en anden falsningsenhed (7) består af det andet falsningsrullepar (21,22) og den anden falsningskniv (24), hvor den første falsningsenhed (6) falser arket (S) på en sådan måde, at den første falsningskniv (23) presser den første eller anden fals fra den anden flade af arket (S2) til den første flade af arket (S1) og indsætter arket (S) i mellemrummet mellem den første og anden falsningsrulle, hvor den anden falsningsenhed (7) falser arket (S) på en sådan måde, at den anden falsningskniv (24) presser den første eller anden fals fra den første flade af arket (S1) til den anden flade af arket (S2) og indsætter arket (S) i mellemrummet mellem den anden og tredje falsningsrulle, og hvor når arket (S) er et ark af tungt papir, vil styreenheden (3) styre foldnings- og falsningsmekanismen (1,2) på en sådan måde, at den anden foldningsenhed (5) danner den anden foldning (500) efter den første foldningsenhed (4) danner den første fold (400), og den første falsningskniv (23) presser fremspringssiden af den første fold (400), og derefter presser den anden falsningskniv (24) fremspringssiden af den anden fold (500).A folding and folding device according to claim 1, wherein the folding mechanism (2) comprises: the folding roll pairs, which comprises two folding roll pairs, wherein a first folding roll pair (20, 21) of the two folding roll pairs consists of a first folding roll (20) and a second folding roller (21), and a second folding roller pair (21, 22) of the two folding roller pairs consists of the second folding roller (21) and a third folding roller (22); and the folding blades which comprise a first and second folding blades; wherein a first folding unit (6) consists of the first folding roller pair (20, 21) and the first folding knife (23), wherein a second folding unit (7) consists of the second folding roller pair (21, 22) and the second folding knife (24), wherein the first folding unit (6) folds the sheet (S) in such a way that the first folding knife (23) presses the first or second fold from the second face of the sheet (S2) to the first face of the sheet (S1) and inserts the sheet (S) in the space between the first and second folding rolls, the second folding unit (7) folding the sheet (S) in such a way that the second folding knife (24) presses the first or second fold from the first face of the sheet ( S1) to the second face of the sheet (S2) and inserts the sheet (S) into the space between the second and third folding rolls, and where when the sheet (S) is a sheet of heavy paper, the controller (3) controls the folding and folding mechanism. (1,2) in such a way that the second folding unit (5) forms d a second fold (500) after the first folding unit (4) forms the first fold (400) and the first folding knife (23) presses the projection side of the first fold (400), and then the second folding knife (24) presses the projection side of it second fold (500). 5. Indretning til foldning og falsning ifølge krav 1, hvor hvor falsningsmekanismen (2) omfatter: falsningsrulleparrene, som omfatter to falsningsrullepar, hvor et første falsningsrullepar (20,21) af de to falsningsrullepar består af en første falsningsrulle (20) og en anden falsningsrulle (21), og et andet falsningsrullepar (21,22) af de to falsningsrullepar består af den anden falsningsrulle (21) og en tredje falsningsrulle (22); og falsningsknivene, som omfatter en første og anden falsningskniv; hvor en første falsningsenhed (6) består af det første falsningsrullepar (20,21) og den første falsningskniv (23), hvor en anden falsningsenhed (7) består af det andet falsningsrullepar (21,22) og den anden falsningskniv (24), hvor den første falsningsenhed (6) falser arket (S) på en sådan måde, at den første falsningskniv (23) presser den første eller anden fold fra den anden flade af arket (S2) til den første flade af arket (S1) og indsætter arket (S) i mellemrummet mellem den første og anden falsningsrulle, hvor den anden falsningsenhed (7) falser arket (S) på en sådan måde, at den anden falsningskniv (24) presser den første eller anden fold fra den første flade af arket (S1) til den anden flade af arket (S2) og indsætter arket (S) i mellemrummet mellem den anden og tredje falsningsrulle, og hvor når arket (S) er et ark af tyndt papir, vil styreenheden (3) styre foldnings- og falsningsmekanismen (1,2) på en sådan måde, at den første foldningsenhed (4) danner den første fold (400) efter den anden foldningsenhed (5) danner den anden fold (500), og den første falsningskniv (23) presser udsparingssiden af den anden fold (500), og derefter presser den anden falsningskniv (24) udsparingssiden af den første fold (400).Apparatus for folding and folding according to claim 1, wherein the folding mechanism (2) comprises: the folding roll pairs, which comprises two folding roll pairs, wherein a first folding roll pair (20, 21) of the two folding roll pairs consists of a first folding roll (20) and a second folding roller (21), and a second folding roller pair (21, 22) of the two folding roller pairs consists of the second folding roller (21) and a third folding roller (22); and the folding blades which comprise a first and second folding blades; wherein a first folding unit (6) consists of the first folding roller pair (20, 21) and the first folding knife (23), wherein a second folding unit (7) consists of the second folding roller pair (21, 22) and the second folding knife (24), wherein the first folding unit (6) folds the sheet (S) in such a way that the first folding knife (23) presses the first or second fold from the second face of the sheet (S2) to the first face of the sheet (S1) and inserts the sheet (S) in the space between the first and second folding rolls, the second folding unit (7) folding the sheet (S) in such a way that the second folding knife (24) presses the first or second fold from the first face of the sheet ( S1) to the second face of the sheet (S2) and inserts the sheet (S) into the space between the second and third fold rolls, and where when the sheet (S) is a sheet of thin paper, the controller (3) controls the folding and folding mechanism. (1,2) in such a way that the first folding unit (4) forms the first fold (400) after the second folding unit (5) forms the second fold (500) and the first folding knife (23) presses the recess side of the second fold (500), and then the second folding knife (24) presses the recess side of the first fold (400).
DK12875778.8T 2012-05-01 2012-05-01 Folding and folding device DK2845829T3 (en)

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WO2013164877A1 (en) 2013-11-07
US20140357463A1 (en) 2014-12-04
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JPWO2013164877A1 (en) 2015-12-24
CN103889871A (en) 2014-06-25
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JP5872029B2 (en) 2016-03-01
CN103889871B (en) 2016-09-21

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