JP2016026975A - Device for scoring and folding sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which a sheet cannot be folded excellently when the sheet is scored and folded from multiple directions.SOLUTION: A first scoring unit 4 includes: a first convex 40 disposed on a side of one surface S1 of a sheet; and a first concave 41 disposed on a side of the other surface S2 of the sheet. Making the first convex 40 and the first concave 41 approach each other forms a first fold where one surface S1 of the sheet is recessed and the other surface S2 of the sheet protrudes. A second scoring unit 5 includes: a second concave 51 disposed on the side of one surface S1 of the sheet; and a second convex 50 disposed on the side of the other surface S2 of the sheet. Making the second concave 51 and the second convex 50 approach each other forms a second fold where one surface S1 of the sheet protrudes and the other surface S2 of the sheet is recessed. Folds in different directions can be formed, thus enabling the folding in the same direction as the fold and the folding in a direction opposite to the fold, and allowing cardboard and thin paper to be folded excellently.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a crease-folding device configured to crease a sheet and fold the sheet along the crease.

  The crease and fold device is configured to crease a sheet and fold the sheet along the crease. A conventional crease and fold device includes, for example, a crease mechanism for folding a sheet, a fold mechanism for folding a sheet conveyed from the crease mechanism, and a crease mechanism as disclosed in Patent Document 1. And a control unit for controlling the operation of the folding mechanism.

  The crease forming mechanism includes a transport roller for transporting the paper and a crease forming unit for putting a crease in the paper transported by the transport roller. The folding mechanism is arranged in parallel with each other with a folding knife for pushing the paper conveyed from the folding mechanism at the tip along the crease, and arranged so that the tip of the folding knife faces the gap. A pair of folding rollers. Then, the sheet pushed by the folding knife is introduced into the interval between the folding rollers, so that the sheet is folded along the crease.

By the way, when a sheet is creased and the sheet is folded along the crease, as shown in FIG. 16 (A), the depression of the crease is pushed with the tip of the folding knife and the sheet is folded along the crease. As shown in FIG. 16B, the sheet may be folded along the crease by pushing the protruding part of the crease with the tip of the folding knife.
When the paper is thick, as shown in FIG. 16A, if the paper is folded in the same direction as the fold, the paper opens and cannot be folded neatly. Therefore, when the paper is thick, as shown in FIG. 16B, the paper is folded in the direction opposite to the fold so that the paper does not open.
In addition, when the paper is thin, if the paper is folded in the direction opposite to the fold, the folded portion of the paper swells and cannot be folded neatly. Therefore, when the paper is thin, the paper is folded in the same direction as the fold so that the folded portion of the paper does not swell.

  In the conventional crease and fold device, the crease portion includes a convex portion disposed on one side of the paper and a concave portion disposed on the other side of the paper, and the convex portion and the concave portion are brought close to each other. A crease is formed in which one side of the paper is recessed and the other side of the paper protrudes. As described above, the crease forming portion only includes a pair of convex portions and concave portions, so that only one type of crease in which one surface of the paper is recessed and the other surface of the paper protrudes can be formed.

  In the conventional crease and folding device, the folding mechanism is such that the first folding knife first pushes the crease from the other side of the paper, and then the second folding knife pushes the crease from the one side of the paper, and the paper is turned twice. Fold. Therefore, the sheet is folded in the direction opposite to the fold in the first folding knife (see FIG. 16B), but is folded in the same direction as the fold in the second folding knife (see FIG. 16A). . As a result, when the paper is thick paper, the folding portion of the paper folded in the same direction as the crease with the second folding knife opened (see FIG. 16A), and could not be folded neatly. In addition, when the paper is thin, the folded portion of the paper folded with the first folding knife swells and cannot be folded neatly.

European Patent No. 1425239

  Therefore, the problem to be solved by the present invention is to fold the paper both when the tip of the folding knife presses the fold in the same direction as the fold and when the tip of the folding knife presses the fold in the opposite direction to the fold. An object of the present invention is to provide a crease / folding device capable of neatly folding a sheet regardless of whether the sheet is thick or thin.

In order to solve the above problems, a crease / folding apparatus according to the present invention comprises
A crease mechanism to crease the paper,
A folding mechanism for folding the paper conveyed from the crease mechanism along the crease;
And a control unit for controlling the operation of the folding mechanism and the folding mechanism,
The crease mechanism includes a conveyance roller for conveying the paper, and a crease unit for making a crease in the paper conveyed by the conveyance roller,
The folding mechanism is arranged in parallel with each other with a folding knife for pushing the paper conveyed from the folding mechanism at the tip along the crease, and arranged so that the tip of the folding knife faces the gap. A pair of folding rollers,
In the crease and fold device configured to fold the paper along the crease by introducing the paper pushed by the folding knife into the interval between the folding rollers,
The crease unit includes a first crease unit and a second crease unit that are arranged along the paper conveyance direction,
The first crease unit includes a first convex portion disposed on one side of the paper and a first concave portion disposed on the other side of the paper, and brings the first convex portion and the first concave portion closer to each other. Thus, a first fold is formed in which one side of the paper is recessed and the other side of the paper protrudes,
The second crease unit includes a second concave portion disposed on one side of the paper and a second convex portion disposed on the other side of the paper, and brings the second concave portion and the second convex portion closer to each other. Thus, a second fold is formed in which one side of the paper protrudes and the other side of the paper is depressed,
The folding mechanism includes three folding rollers composed of first, second, and third folding rollers, and two folding knives composed of first and second folding knives,
A first folding unit is constituted by the first and second folding rollers and the first folding knife,
A second folding unit is configured by the second and third folding rollers and the second folding knife,
The first folding unit is configured such that the first folding knife pushes the first or second fold from the other side of the paper, introduces the paper into the interval between the first and second folding rollers, and folds the paper.
The second folding unit is configured such that the second folding knife pushes the first or second fold from one side of the paper, introduces the paper into the interval between the second and third folding rollers, and further folds the paper,
When the paper is thin, the control unit is configured such that after the second crease unit forms the second crease, the first crease unit forms the first crease, and the tip of the first fold knife is recessed in the second fold. And the operation of the fold insertion mechanism and the folding mechanism is controlled so that the tip of the second folding knife pushes the recessed portion of the first fold.

  As described above, in the crease and fold device according to the present invention, the crease unit includes the first crease unit and the second crease unit that are arranged along the sheet conveyance direction. The first crease unit includes a first convex portion disposed on one side of the paper and a first concave portion disposed on the other side of the paper, and brings the first convex portion and the first concave portion closer to each other. As a result, a first fold is formed in which one side of the paper is recessed and the other side of the paper protrudes. The second crease unit includes a second concave portion disposed on one side of the paper and a second convex portion disposed on the other side of the paper, and brings the second concave portion and the second convex portion closer to each other. Thus, a second fold is formed in which the other side of the sheet protrudes and the one side of the sheet is recessed.

  When the folding knife of the folding mechanism is configured to push the crease from the other side of the paper, if the crease is made by the first crease unit, the crease protrusion can be formed on the other side of the paper. The part can be pushed with a folding knife. Therefore, it is possible to fold the thick paper neatly. At this time, if a crease is made by the second crease unit, a crease recess can be formed on the other side of the sheet, and therefore the crease recess can be pushed with a fold knife. Therefore, it is possible to fold thin paper neatly.

  As described above, in the crease and fold device according to the present invention, the first crease unit and the second crease unit have two sets of concave portions and convex portions in different directions, and folds in different directions are formed on the paper. You can fold the paper both when the tip of the folding knife pushes the crease in the same direction as the fold and when the tip of the folding knife pushes the crease in the opposite direction to the fold. Even thin paper can be folded neatly.

Schematic which shows the crease putting / folding apparatus which concerns on this invention. Schematic which shows operation | movement of a crease putting mechanism in case a paper is a thick paper. The schematic diagram which shows the operation | movement of a crease putting mechanism following FIG. FIG. 4 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 3. The schematic diagram which shows operation | movement of a folding mechanism following FIG. FIG. 6 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 5. FIG. 7 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 6. FIG. 10 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 9. Schematic which shows operation | movement of a crease | folding mechanism in case a paper is thin paper. The schematic diagram which shows the operation | movement of a crease putting mechanism following FIG. The schematic diagram which shows operation | movement of a folding mechanism following FIG. FIG. 12 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 11. FIG. 13 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 12. FIG. 14 is a schematic diagram illustrating the operation of the folding mechanism following FIG. 13. The schematic diagram which shows operation | movement of a folding mechanism following FIG. In the case where the paper is thick paper, (A) is a diagram showing the paper folded in the same direction as the fold by pushing the dent of the fold with the tip of the fold knife, The figure which shows the paper folded in the direction opposite to a crease | fold, pushing at the front-end | tip.

  Hereinafter, a crease / folding apparatus according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the crease and fold device includes a crease mechanism 1 for making a crease in the paper S, a fold mechanism 2 for folding the paper S conveyed from the crease mechanism 1 along the crease, and a crease. And a control unit 3 for controlling the operation of the mechanism 1 and the folding mechanism 2. The crease forming mechanism 1 includes a first transport roller 10 and a second transport roller 11 for transporting the paper S. The first transport roller 10 and the second transport roller 11 are arranged along the transport direction F of the paper S. The first transport roller 10 is disposed on the upstream side in the transport direction F, and the second transport roller 11 is disposed on the downstream side in the transport direction F.

  The first transport roller 10 includes a first drive roller 100 and a first idle roller 101. The first drive roller 100 and the first idle roller 101 are close to each other, and the first idle roller 101 rotates as the first drive roller 100 rotates. The second transport roller 11 includes a second drive roller 110 and a second idle roller 111. The second drive roller 110 and the second idle roller 111 are close to each other, and the second idle roller 111 rotates as the second drive roller 110 rotates.

  A first idle roller 101 and a second idle roller 111 are disposed on one side (upper surface) S1 side of the sheet S, and a first drive roller 100 and a second drive roller 110 are disposed on the other side (lower surface) S2 side of the sheet S. Is placed.

  The crease mechanism 1 includes a crease portion 45 for making a crease in the paper S between the first transport roller 10 and the second transport roller 11. The crease unit 45 includes a first crease unit 4 and a second crease unit 5. The first crease unit 4 and the second crease unit 5 are arranged along the transport direction F of the paper S. The first crease unit 4 is disposed on the upstream side in the transport direction F, and the second crease unit 5 is disposed on the downstream side in the transport direction F.

  The first crease unit 4 includes a first convex portion 40 and a first concave portion 41. The first convex portion 40 is disposed on the one surface (upper surface) S1 side of the paper S, and the first concave portion 41 is disposed on the other surface (lower surface) S2 side of the paper S. The first convex portion 40 protrudes toward the paper S and extends in a direction perpendicular to the transport direction F. The first recess 41 is recessed toward the paper S and extends in a direction perpendicular to the transport direction F. The 1st convex part 40 and the 1st recessed part 41 are comprised so that it may mutually engage. The first convex portion 40 is fixed, and the first concave portion 41 is reciprocated by the first crease driving mechanism 42 so as to approach or separate from the first convex portion 40. The first recess 41 moves in a direction perpendicular to the transport direction F. As the first concave portion 41 approaches the first convex portion 40, the paper S is sandwiched between the first convex portion 40 and the first concave portion 41, the one surface S 1 of the paper S is recessed, and the other surface S 2 of the paper S is A protruding first fold 400 is formed. That is, the first crease 400 is formed with a depression on the one side S1 side of the paper S and a protrusion on the other side S2 side of the paper S.

  The second crease unit 5 includes a second convex portion 50 and a second concave portion 51. The second convex portion 50 is disposed on the other surface (lower surface) S2 side of the paper S, and the second concave portion 51 is disposed on the one surface (upper surface) S1 side of the paper S. The second protrusion 50 protrudes toward the paper S and extends in a direction perpendicular to the transport direction F. The second recess 51 is recessed toward the sheet S and extends in a direction perpendicular to the transport direction F. The 2nd convex part 50 and the 2nd recessed part 51 are comprised so that it may mutually engage. The second concave portion 51 is fixed, and the second convex portion 50 is reciprocated by the second crease driving mechanism 52 so as to approach or separate from the second concave portion 51. The second convex portion 50 moves in a direction perpendicular to the transport direction F. As the second convex portion 50 approaches the second concave portion 51, the paper S is sandwiched between the second convex portion 50 and the second concave portion 51, the one surface S <b> 1 of the paper S protrudes, and the other surface S <b> 2 of the paper S protrudes. A recessed second fold 500 is formed. That is, the second crease 500 has a protruding portion formed on the one surface S1 side of the paper S and a hollow portion formed on the other surface S2 side of the paper S.

  The folding mechanism 2 includes a first folding roller 20, a second folding roller 21, and a third folding roller 22. The folding mechanism 2 includes a first folding knife 23 and a second folding knife 24. The first folding roller 20 and the second folding roller 21 are arranged along the transport direction F. The first folding roller 20 and the second folding roller 21 are close to each other with a predetermined small first interval 201. The first folding knife 23 is arranged with its tip 23 a facing the first interval 201. The second and third folding rollers 21 and 22 are arranged along the transport direction F ′. The transport direction F ′ is directed substantially perpendicular to the transport direction F. The second folding roller 21 and the third folding roller 22 are close to each other with a predetermined small second interval 202. The tip of the second folding knife 24 is disposed so as to face the second interval 202.

The first folding knife 23 is reciprocated by the first knife driving mechanism 230 so that the tip 23 a approaches or separates from the first interval 201. The first folding knife 23 moves in a direction perpendicular to the transport direction F. The front end 23a of the first folding knife 23 pushes the creases 400 and 500 from the other side S2 of the paper S.
Further, the second folding knife 24 is reciprocated by the second knife driving mechanism 240 so that the tip 24 a approaches or separates from the second interval 202. The second folding knife 24 moves in a direction perpendicular to the transport direction F ′. The second folding knife 24 has a leading end 24 a that pushes the creases 400 and 500 from one side S 1 of the paper S.

  The folding mechanism 2 includes a first pressing roller 200, a second pressing roller 210, and a third pressing roller 220. The sheet S is sandwiched between the first folding roller 20 and the first pressing roller 200, the sheet S is sandwiched between the second folding roller 21 and the second pressing roller 210, and the sheet S is sandwiched between the third folding roller 22 and the third pressing roller 220. Thus, the sheet S is pressed.

  The first folding roller 20, the second folding roller 21, and the first folding knife 23 constitute a first folding unit 6. The second folding roller 21, the third folding roller 22, and the second folding knife 24 constitute a second folding unit 7. The crease and fold device puts creases 400 and 500 in the sheet S by the crease mechanism 1, folds the sheet S along the folds 400 and 500 by the first fold unit 6, and then folds 400 by the second fold unit 7. , 500, the paper S is folded.

  The crease and fold device includes a transport motor 12 including a servo motor or a stepping motor. The transport motor 12 is connected to the first drive roller 100, the second drive roller 110, and the second folding roller 21 via the first timing belt 121, and the first drive roller 100 is driven by the rotational drive of the transport motor 12. The second drive roller 110 and the second folding roller 21 are configured to rotate. The first folding roller 20 and the third folding roller 22 are connected to each other via the second timing belt 122, and the first folding roller 20 and the third folding roller 22 are rotated with the rotation of the second folding roller 21. Is configured to rotate. As the transport motor 12 rotates counterclockwise, the first and second drive rollers 100 and 110 and the second folding roller 21 rotate counterclockwise. As the second folding roller 21 rotates counterclockwise, the first and third folding rollers 20 and 22 rotate clockwise.

  The crease and fold device includes position sensors 13 and 13 including a light-emitting element and a light-receiving element for detecting the leading edge of the paper S on the entrance side of the crease mechanism 1. The control unit 3 is connected to the position sensor 13, the transport motor 12, the first and second crease driving mechanisms 42 and 52, and the first and second fold knife driving mechanisms 230 and 240. When the tip Sa is detected, the operations of the crease mechanism 1 and the folding mechanism 2 are controlled based on a preset program.

  The first and second crease driving mechanisms 42 and 52 include, for example, a motor and a cam, and the first concave portion 41 and the second convex portion 50 reciprocate by rotating the cam. The first and second crease driving mechanisms 42 and 52 can also be configured using a slider crank mechanism, a cylinder mechanism, a motor-driven feed screw, or the like.

[When the paper is thick]
Next, based on FIGS. 2 to 8, the operation of the crease / folding apparatus of the present invention when the paper S is thick paper will be described.
The control unit 3 is set with a program when the paper S is a thick paper, and when the distances from the leading edge Sa of the paper S to the first fold 400 and the second fold 500 are input, the crease mechanism 1 and the fold mechanism The operation of 2 is controlled as follows.

  As shown in FIG. 2, when the position sensor 13 detects the leading edge Sa of the paper S, the transport roller 10 is arranged so that the position where the first fold line 400 is formed is arranged at the position of the first convex portion 40 and the first concave portion 41. , 11 is controlled, and the paper S is transported in the transport direction F. When the position where the first fold line 400 is formed is disposed at the position of the first convex portion 40 and the first concave portion 41, the sheet S is stopped by the stop of the transport rollers 10 and 11. Then, the first concave portion 41 approaches the first convex portion 40, and the first fold 400 is formed on the paper S. In the first crease 400, one surface (upper surface) S1 of the paper S is recessed, and the other surface (lower surface) S2 of the paper S protrudes.

  Thereafter, as shown in FIG. 3, the rotation amount of the transport rollers 10 and 11 is controlled so that the position where the second fold line 500 is formed is arranged at the position of the second convex part 50 and the second convex part 51, The sheet S is transported in the transport direction F. When the position where the second fold line 500 is formed is arranged at the position of the second convex portion 50 and the second concave portion 51, the sheet S is stopped by the stop of the transport rollers 10 and 11. Then, the second convex portion 50 approaches the second concave portion 51, and the second fold line 500 is formed on the paper S. In the second crease 500, one surface (upper surface) S1 of the paper S protrudes, and the other surface (lower surface) S2 of the paper S is depressed.

  Thereafter, as shown in FIG. 4, the rotation amount of the transport roller 11 and the first folding roller 20 is controlled so that the first fold 400 is disposed at the tip 23 a of the first fold knife 23, and the sheet S is transported in the transport direction F. It is conveyed to. The paper S is discharged from the second conveying roller 11, and the discharged paper S is sandwiched between the first folding roller 20 and the first pressing roller 200 and sent. At this time, the second pressing roller 210 is separated from the second folding roller 21 so that the sheet S is not conveyed in the direction opposite to the conveyance direction F by the rotation of the second folding roller 21 in the reverse direction. When the first fold 400 is disposed at the position of the tip 23a of the first fold knife, the sheet S is stopped by stopping the transport roller 11 and the first and second fold rollers 20, 21.

  Thereafter, as shown in FIG. 5, the second presser roller 210 approaches the second folding roller 21 and the first folding knife 23 is driven. Then, the first folding roller 20 rotates in the clockwise direction, and the second folding roller rotates in the counterclockwise direction. As a result, the tip 23 a of the first folding knife 23 pushes the first fold 400, and the first fold 400 is introduced into the first gap 201 between the first and second folding rollers 20, 21. Accordingly, the tip 23 a of the first folding knife 23 presses the protruding portion of the first fold 400. Then, the sheet S introduced into the first gap 201 is folded along the first fold 400 and discharged from the first and second folding rollers 20 and 21. As a result, the sheet S is folded in the direction opposite to the first fold 400.

  Thereafter, as shown in FIG. 6, the rotation of the first and second folding rollers 20 and 21 causes the sheet S to be conveyed in the conveyance direction F ′ so that the second fold 500 is disposed at the position of the tip 24 a of the second folding knife 24. Delivered to. The transport direction F ′ is directed substantially perpendicular to the transport direction F. At this time, the third pressing roller 220 is separated from the third folding roller 22 so that the sheet S is not conveyed in the direction opposite to the conveyance direction F ′ by the reverse rotation of the third folding roller 22. When the second fold 500 is disposed at the position of the tip 24a of the second fold knife 24, the sheet S is stopped by the stop of the first and second fold rollers 20, 21.

  Thereafter, as shown in FIG. 7, the third presser roller 220 approaches the third folding roller 22, and the second folding knife 24 is driven. Then, the first folding roller 20 rotates in the clockwise direction, the second folding roller rotates in the counterclockwise direction, and the third folding roller 22 rotates in the clockwise direction. As a result, the tip 24 a of the second folding knife 24 pushes the second fold 500, and the second fold 500 is introduced into the second gap 202 of the second and third folding rollers 21 and 22. Therefore, the tip 24 a of the second folding knife 24 presses the protruding portion of the second fold 500. Then, the sheet S introduced into the second gap 202 is folded along the second fold line 500 and discharged from the second and third folding rollers 21 and 22. As a result, the sheet S is folded in the direction opposite to the second fold line 500.

  By the above operation, the sheet S is folded along the first and second fold lines 400 and 500 as shown in FIG. At this time, as described above, since the apparatus according to the present invention can fold the thick paper S in the direction opposite to the first and second folds 400 and 500, the paper S is folded neatly without being opened.

[When the paper is thin]
Next, based on FIGS. 9 to 15, the operation of the crease / folding apparatus of the present invention when the paper S is thin will be described.
The control unit 3 is set with a program when the paper S is thin, and when the distances from the leading edge Sa of the paper S to the first fold 400 and the second fold 500 are input, the crease mechanism 1 and the fold mechanism The operation of 2 is controlled as follows.

  As shown in FIG. 9, when the position sensor 13 detects the leading edge Sa of the paper S, the transport roller 10 is arranged such that the position where the second fold line 500 is formed is located at the position of the second convex portion 50 and the second concave portion 51. , 11 is controlled, and the paper S is transported in the transport direction F. When the position where the second fold line 500 is formed is arranged at the position of the second convex portion 50 and the second concave portion 51, the sheet S is stopped by the stop of the transport rollers 10 and 11. Then, the second convex portion 50 approaches the second concave portion 51, and the second fold line 500 is formed on the paper S. In the second crease 500, one surface (upper surface) S1 of the paper S protrudes, and the other surface (lower surface) S2 of the paper S is recessed.

  Thereafter, as shown in FIG. 10, the rotation amount of the transport rollers 10 and 11 is controlled so that the position where the first fold line 400 is formed is arranged at the position of the first convex portion 40 and the first convex portion 41. The sheet S is transported in the transport direction F. When the position where the first fold line 400 is formed is disposed at the position of the first convex portion 40 and the first concave portion 41, the sheet S is stopped by the stop of the transport rollers 10 and 11. Then, the first concave portion 41 approaches the first convex portion 40, and the first fold 400 is formed on the paper S. In the first crease 400, one surface (upper surface) S1 of the paper S is recessed, and the other surface (lower surface) S2 of the paper S protrudes.

  Thereafter, as shown in FIG. 11, the rotation amount of the conveying roller 11 and the first folding roller 20 is controlled so that the second fold 500 is arranged at the position of the tip 23 a of the first folding knife 23, and the sheet S is conveyed. It is conveyed in the direction F. The paper S is discharged from the second conveying roller 11, and the discharged paper S is sandwiched between the first folding roller 20 and the first pressing roller 200 and sent. At this time, the second pressing roller 210 is separated from the second folding roller 21 so that the sheet S is not conveyed in the direction opposite to the conveyance direction F by the rotation of the second folding roller 21 in the reverse direction. When the second fold line 500 is disposed at the position of the tip 23a of the first fold knife, the sheet S is stopped by the stop of the transport roller 11, the first and second fold rollers 20, 21.

  Thereafter, as shown in FIG. 12, the second presser roller 210 approaches the second folding roller 21, and the first folding knife 23 is driven. Then, the first folding roller 20 rotates in the clockwise direction, and the second folding roller rotates in the counterclockwise direction. As a result, the tip 23 a of the first folding knife 23 pushes the second fold 500, and the second fold 500 is introduced into the first gap 201 between the first and second folding rollers 20, 21. Therefore, the tip 23 a of the first folding knife 23 presses the recess of the second fold 500. Then, the sheet S introduced into the first gap 201 is folded along the second fold line 500 and discharged from the first and second folding rollers 20 and 21. As a result, the sheet S is folded in the same direction as the second fold line 500.

  Thereafter, as shown in FIG. 13, the sheet S is moved in the transport direction F ′ by the rotation of the first and second folding rollers 20 and 21 so that the first fold 400 is disposed at the position of the tip 24a of the second folding knife 24. Delivered to. The transport direction F ′ is directed substantially perpendicular to the transport direction F. At this time, the third pressing roller 220 is separated from the third folding roller 22 so that the sheet S is not conveyed in the direction opposite to the conveyance direction F ′ by the reverse rotation of the third folding roller 22. When the first fold 400 is disposed at the tip 24a of the second fold knife 24, the sheet S is stopped by the stop of the first and second fold rollers 20, 21.

  Thereafter, as shown in FIG. 14, the third presser roller 220 approaches the third folding roller 22, and the second folding knife 24 is driven. Then, the first folding roller 20 rotates in the clockwise direction, the second folding roller rotates in the counterclockwise direction, and the third folding roller 22 rotates in the clockwise direction. As a result, the tip 24 a of the second folding knife 24 pushes the first fold 400, and the first fold 500 is introduced into the second gap 202 of the second and third folding rollers 21 and 22. Therefore, the tip 24 a of the second folding knife 24 presses the recess of the first fold 400. Then, the sheet S introduced into the second gap 202 is folded along the first fold 400 and discharged from the second and third folding rollers 21 and 22. As a result, the sheet S is folded in the same direction as the first fold line 500.

  By the above operation, the sheet S is folded along the first and second fold lines 400 and 500 as shown in FIG. At this time, as described above, the apparatus according to the present invention can fold the thick paper S in the same direction as the first and second folds 400 and 500, so that the folded portion of the paper S is folded neatly without swelling. It is done.

DESCRIPTION OF SYMBOLS 1 Folding mechanism 2 Folding mechanism 3 Control part 45 Folding part 4 First crease unit 40 First convex part 41 First concave part 42 First crease driving mechanism 5 Second crease unit 50 Second convex part 51 Second Concave portion 52 Second fold insertion drive mechanism 400 First fold 500 Second crease 10 First transport roller 100 First drive roller 101 First idle roller 11 Second transport roller 110 Second drive roller 111 Second idle roller 6 First fold Unit 7 Second folding unit 20 First folding roller 21 Second folding roller 22 Third folding roller 23 First folding knife 23a First folding knife tip 230 First folding knife drive mechanism 24 Second folding knife 24a Second folding knife Tip 240 of the second folding knife drive mechanism 201 first interval 202 second interval 200 first presser roller 210 second presser roller 220 second Pressing roller 12 transport motor 13 position sensor 121 first timing belt 122 the other surface F of one surface S2 sheet of the second timing belt S sheets S1 paper, F 'conveying direction

Claims (1)

A crease mechanism to crease the paper,
A folding mechanism for folding the paper conveyed from the crease feeding mechanism along the crease;
A control unit for controlling the operation of the folding mechanism and the folding mechanism,
The crease putting mechanism includes a transport roller for transporting the paper, and a crease putting part for putting the crease in the paper transported by the transport roller,
The folding mechanism is arranged in parallel with each other at a predetermined interval with a folding knife for pushing the paper conveyed from the crease feeding mechanism along the crease at a leading end, and the leading end of the folding knife is located at the spacing A pair of folding rollers arranged to face each other,
In the crease and fold device configured to fold the paper along the crease by introducing the paper pushed by the folding knife into the gap of the folding roller,
The crease unit includes a first crease unit and a second crease unit that are arranged along a conveyance direction of the paper,
The first crease unit includes a first convex portion disposed on one side of the paper and a first concave portion disposed on the other surface of the paper, and the first convex portion and the first convex portion The first crease in which one surface of the paper is depressed and the other surface of the paper protrudes is formed by bringing the concave portions closer to each other,
The second crease unit includes a second recess disposed on one side of the sheet and a second protrusion disposed on the other side of the sheet, and the second recess and the second By bringing the convex portions closer to each other, a second fold is formed in which one side of the paper protrudes and the other side of the paper is depressed,
The folding mechanism includes three folding rollers composed of first, second and third folding rollers, and two folding knives composed of first and second folding knives,
A first folding unit is configured by the first and second folding rollers and the first folding knife,
A second folding unit is configured by the second and third folding rollers and the second folding knife,
In the first folding unit, the first folding knife pushes the first or second fold from the other side of the paper, introduces the paper into the gap between the first and second folding rollers, and the paper Is configured to fold,
The second folding unit is configured such that the second folding knife pushes the first or second fold from one surface of the paper, introduces the paper into the interval between the second and third folding rollers, and the paper Is configured to fold further,
When the paper is thin, the control unit is configured such that after the second crease unit forms the second fold, the first crease unit forms the first fold, and the first fold knife The operation of the fold insertion mechanism and the folding mechanism is controlled such that the tip pushes the depression of the second fold and the tip of the second folding knife pushes the depression of the first fold. Folding and folding device.

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