JPH1086093A - Slitter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To maintain a continuous cutting line even when a cutting order is changed, for example, to prevent a cutting line for forming a trimming piece from being discontinuous, and to further reduce a trimming shear. Provide a slitter that does not require extra equipment. SOLUTION: In a slitter 1, by changing the position of a slitter blade 20 in the width direction of a sheet DS, it is possible to change the order of cutting the sheet. The slitter blade 20 moves in a loading state in the width direction of the sheet while being inclined with respect to the feeding direction of the sheet DS in a direction approaching the cutting position of the next order when viewed from the cutting position of the current order. , Forming an inclined cutting line Ki for connecting the cutting line of the current order and the cutting line of the next order to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter for cutting a sheet such as a cardboard sheet.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
The corrugated cardboard sheet DS is cut in a sheet feeding direction (flow direction) by a slitter S having a plurality of slitter blades C. FIG. 31 shows an example in which the catch pieces are D1 and D2.
On both sides of S, trimming pieces TM, which are band-shaped cutting residues having a predetermined width, are formed. These trimming pieces TM are respectively suctioned and collected by a trimming piece collecting mechanism R provided downstream of the slitter S.

[0003] In many cardboard production lines, two slitters are used in order to efficiently change the order of cutting such as the number of cuts and the width of the cut for continuously cut cardboard sheets DS. Are arranged adjacent to each other in series in the sheet flow direction. In this case, while one slitter device continues cutting in the current order, the other slitter device positions each slitter blade for the next order, and if it is time to change the order, the device on the current order side Is set to the unload state, and the apparatus on the next order side is set to the load state, and the order is changed without stopping the sheet feeding. FIG. 32 shows an example of a forming mode of the cutting line group at this time. Here, the solid line in the figure indicates the cutting line of the current order, and the dashed line indicates the cutting line of the next order.

[0004]

Here, as shown in FIG. 32, when the width of the trimming piece TM changes from W1 to W2 due to the change of the cutting order, the cutting line K1 of the trimming piece of the current order and the cutting line K1 of the next order are changed. Cutting line K2 for trimming pieces
Are discontinuous, and a non-partitioned portion Y is generated between the trimming piece TM and the remaining sheet main body portion DM, which causes a problem that the trimming piece TM cannot be collected. Conventionally, in order to avoid this, a cutting line is formed at a right angle to the sheet edge using a trimming shear to cut the non-divided portion Y and cut the trimming pieces TM. However, there is a problem that the equipment cost rises as much as the trimming shear is required.

An object of the present invention is to maintain a continuous cutting line even when a cutting order is changed, thereby preventing, for example, a cutting line for forming a trimming piece from becoming discontinuous, and thus, a trimming shear. It is another object of the present invention to provide a slitter which does not require extra equipment.

[0006]

In order to solve the above-mentioned problems, a slitter of the present invention cuts a sheet conveyed in a longitudinal direction in a feeding direction thereof, and
A slitter blade movable in the width direction of the sheet and having a variable angle with respect to the sheet feeding direction, wherein the slitter blade is inclined at a predetermined angle with respect to the sheet feeding direction, and The main structure of the sheet is to form a cutting line inclined in the sheet feeding direction by moving the sheet in the width direction, and the first configuration has the following features. That is, a disk-shaped first slitter blade that is provided on one sheet surface side of the sheet conveyed in the longitudinal direction, is movable in the width direction of the sheet, and has an angle made with the sheet feeding direction that is variable. A circle which is arranged on the opposite side of the first slitter blade with the sheet interposed therebetween, and which is interlocked with the first slitter blade and which is movable in the width direction of the sheet and whose angle with the sheet feeding direction is variable. A second slitter blade having a plate shape, and cutting the sheet in the feed direction between the first and second slitter blades, and moving the first and second slitter blades in the sheet feed direction. When the sheet is inclined at a predetermined angle with respect to the sheet, the sheet is moved in the width direction of the sheet in conjunction with each other, thereby forming a cutting line inclined in the sheet feeding direction on the sheet.

That is, in a slitter having two slitter blades sandwiching a sheet in the thickness direction, the order of cutting the sheet can be changed by changing the position of the slitter blade in the width direction of the sheet. If
By configuring this as described above, the slitter blade is
In the direction approaching the cutting position of the next order when viewed from the cutting position of the current order, the sheet moves in a loaded state in the width direction of the sheet while being inclined with respect to the sheet feeding direction, for example, the cutting line of the current order and the next cutting line. An inclined cutting line for connecting the cutting lines of the order to each other can be formed. Thereby, the cutting line can be made continuous between the current order and the next order. In the above configuration, a slitter blade moving mechanism that moves the slitter blade in the width direction of the sheet can be provided.

On the other hand, a second configuration of the slitter of the present invention is as follows.
A slitter blade that is provided on one sheet surface side of the sheet conveyed in the longitudinal direction and that is a disk-shaped rotary blade that is movable in the width direction of the sheet and has an angle made with the sheet feeding direction that is variable, At the position corresponding to the slitter blade,
Slitter blade receiving means provided on the opposite side of the sheet and having a variable angle with respect to the sheet feeding direction in conjunction with the slitter blade, wherein the slitter blade tip is a slitter blade. By receiving with the receiving means, the sheet is cut in the longitudinal direction by the slitter blade,
The slitter blade and the slitter blade receiving means are moved in conjunction with each other in the width direction of the sheet in a state in which the slitter blade and the slitter blade receiving means are inclined at a predetermined angle with respect to the sheet feeding direction. The inclined cutting line can be formed.

In the second configuration, the slitter blade is constituted by a single rotary blade disposed on one side of the sheet, and the slitter blade is received by slitter blade receiving means disposed on the opposite side of the sheet. The sheet is cut by receiving the cutting edge. By moving the slitter blade and the slitter blade receiving means in the width direction of the sheet in an inclined state in conjunction with each other, the same effect as in the first configuration described above can be achieved in a configuration using only one slitter blade. can do. In addition, since the cutting edge of the slitter blade is guided by the receiving means, it is difficult for the sheet to return due to the cutting, thereby improving the cut surface of the sheet.

In the above construction, the slitter blade receiving means are arranged adjacent to each other on the other sheet surface side of the sheet in a direction intersecting with the conveying direction of the sheet, and can be elastically displaced along the arrangement direction. And a plurality of blade guide portions which are integrally movable in the width direction of the sheet in cooperation with the slitter blade and which are integrally changeable with respect to the sheet feeding direction. Can be configured as In this case, the sheet is cut in the longitudinal direction by the slitter blade as the blade edge of the slitter blade enters between the blade guide portions. That is, by providing the blade guide portions so as to be elastically displaceable along the arrangement direction, for example, the slitter blade can be moved between a cutting position where the sheet is cut and a retract position where the slitter blade is retracted from the sheet and does not cut. When the slitter blade is moved from the retracted position to the cutting position, even if the slitter blade interferes with the blade guide portion, the blade guide portion is elastically displaced and relieves this, so that the slitter blade is damaged. No worries. Further, in a state where the slitter blade has entered between the blade guide portions, the angle of the blade guide portion can be changed in conjunction with the slitter blade, so that when the angle of the slitter blade is changed, the blade guide portion is formed. Interference between the
Also, even if some interference occurs, the blade guide portion can be mitigated by elastic displacement.

The plurality of blade guide portions may be, for example, circular rolling portions provided so as to be coaxially rotatable in the sheet conveying direction and to be elastically displaceable along the rotation axis. These circular rolling portions may be provided so as to freely rotate in the sheet conveying direction, or may be positively driven by driving means such as a motor.

More specifically, each of the plurality of circular rolling portions may be a receiving disk formed in a thin plate shape from a flexible material such as plastic.
The slitter blades may be arranged so that a gap smaller than the thickness of the slitter blade is generated between adjacent ones, and the cutting edge of the slitter blade may enter the gap while curving the receiving discs on both sides. More specifically, on the sheet surface side opposite to the position where the slitter blade is located, a support shaft is provided along the sheet width direction and rotatably in the sheet feeding direction, and each of the receiving discs is provided. It is possible to adopt a configuration in which a spacer having a smaller diameter than the receiving disk and a thickness smaller than the thickness of the slitter blade is interposed between the adjacent receiving disks while being attached so as to be rotatable integrally with the support shaft.

The plurality of blade guide portions can be configured to be movable between a receiving position where the slitter blade is allowed to enter and a retracted position retracted from the receiving position.

Next, in the first and second configurations of the present invention described above, a plurality of slitter blades for cutting a sheet in the feeding direction are arranged in the width direction of the sheet, and the plurality of slitter blades are arranged. At least some of the blades can be configured to be movable in the sheet width direction and to be variable in angle with the sheet feeding direction. In this case, the slitter blade whose angle is variably provided can be a rotary blade that is rotationally driven by mutually independent driving means.

For example, among the plurality of slitter blades,
At least one of the two outermost ones can be used to form a strip-shaped trimming piece on the corresponding side in the sheet width direction, but the slitter blade can be moved in the sheet width direction and The angle between the sheet and the sheet feeding direction can be made variable. In this case, when the width of the trimming piece is changed when changing the order, the slitter blade is inclined with respect to the sheet feeding direction in a direction approaching the next order cutting position when viewed from the cutting position of the current order. While moving in the loaded state, it is possible to form an inclined cutting line for connecting the cutting line of the current order and the cutting line of the next order to each other. As a result, the cutting line for forming the trimming pieces can be made continuous, thereby preventing the formation of a non-divided portion between the trimming pieces and the remaining sheet body, and an unnecessary portion such as a trimming shear. No equipment is required.

On the other hand, the one located in the middle of the plurality of slitter blades plays a role of cutting the remaining sheet main body to a predetermined number of sheets when it is considered that trimming pieces have been removed. According to the same principle, the cutting lines can be connected to each other by the inclined cutting lines between the current order and the next order. As a result, in the conventional slitter, in the order change portion,
The discontinuity of the cutting line allows the cutting pieces to be connected to each other in the width direction of the sheet, which can be separated from each other.
For example, if you want to sort the feed of each piece on the downstream side of the slitter and perform the next process such as cutting individually, if the pieces are connected in the width direction in the order change part, When sorting the pieces, troubles such as breakage of the catch pieces may occur. In order to prevent this, cutting / removing the part where the order has been changed has conventionally been performed.However, this requires a new cutting device such as a rotary shear, and in addition, the cutting / removal of the sheet is accompanied by the cutting / removal. There is a problem that the flow is interrupted and jam-up or the like is likely to occur. However, according to the above configuration, even in the order change portion, the catch pieces are separated from each other in a continuous state, so that there is no such a concern.

Next, a third configuration of the slitter of the present invention is as follows.
In order to efficiently change the order of cutting, it is characterized as follows. That is, a plurality of sets of slitter blades arranged in the width direction of the sheet and for cutting the sheet in the sheet feeding direction are arranged in the sheet feeding direction. Then, while any one of the plural sets of slitter blades is cutting the current order in the loaded state, the other set of slitter blades waits for the next order in the unloaded state and changes the order. , The slitter blades of the above-mentioned arbitrary group (the current order slitter blade group) that has cut the current order are shifted from the unload state to the load state, and are replaced by the slitter blades of the other group ( The next order slitter blade group shifts from the load state to the unload state, and cuts the next order. Then, in at least one of the current order slitter blade group and the next order slitter blade group, at least some of the plurality of slitter blades constituting the slitter blade group are provided so as to be movable in the sheet width direction, whereby The slitter blade forms a cutting line inclined with respect to the feeding direction of the sheet.

Also in the third configuration, in each slitter blade set, at least one of the two outermost ones is used to form a strip-shaped trimming piece on the corresponding side in the sheet width direction. The slitter blade can be movable in the width direction of the sheet. In the third configuration, the slitter blade movably provided in the width direction of the sheet may have a fixed angle with respect to the sheet feeding direction. In addition, each slitter blade is of the same type as the above-described first and second configurations (that is, 2
(A single blade or a single blade and a slitter blade receiving means), and at least a part thereof can be variably provided at an angle by the same concept as the first and second configurations. .

Here, in the slitter of the third configuration, as a method of connecting the cutting line between the current order and the next order, the following three modes can be specifically exemplified.

(Method 1) At least some of the slitter blades belonging to the current order slitter blade group are provided so as to be movable in the sheet width direction and variably formed with the sheet feeding direction. When changing the order, the slitter blades move in a loaded state from the cutting position of the current order to the cutting position of the next order while being inclined with respect to the sheet feeding direction, thereby forming an inclined cutting line. Then, the slitter blade belonging to the next-order slitter blade group is brought into the loaded state at the position leading to the inclined cutting line, and then starts cutting the next order.

(Method 2) At least some of the slitter blades belonging to the next-order slitter blade group are provided so as to be movable in the sheet width direction and variably formed with the sheet feeding direction. When the order is changed, the slitter blades are positioned in the unload state at a position leading to the cutting line of the current order, and then the current order slitter blade group is changed to the unload state, and is then loaded, and then the sheet is set. Forming the inclined cutting line by moving in the loading state to the cutting position of the next order while inclining with respect to the feeding direction of the next order, and after reaching the cutting position of the next order, the cutting line of the next order continues. To form

(Method 3) With respect to both the current order slitter blade group and the next order slitter blade group, at least a part of the slitter blades is movable in the sheet width direction and forms an angle with the sheet feeding direction. Is variably provided.
Then, when changing the order, the current order slitter blade group is loaded from the cutting position of the current order to an intermediate position between the cutting position of the current order and the cutting position of the next order while being inclined with respect to the sheet feeding direction. By moving, an inclined cutting line is formed. And
The slitter blade belonging to the next-order slitter blade group is loaded in a position leading to the inclined cutting line, and then moves in the loaded state to the next-order cutting position while being inclined with respect to the sheet feeding direction. As a result, an inclined cutting line is formed, and after reaching the cutting position of the next order, the cutting line of the next order is continuously formed.

In any of the above-mentioned three systems, the order change can be efficiently performed by linking the two slitter blade groups, and a predetermined cutting line (for example, a cutting line for forming a trimming piece) can be formed. Can be continuous. Here, when the above-mentioned methods 1 and 2 are adopted, an aspect in which the angle formed by the slitter blade with respect to the sheet feeding direction is variably provided for only one of the plurality of slitter blade groups is possible. is there. In this case, when the slitter blade group is on the current order side, the order is changed, and when the slitter blade group is on the next order side, the method is changed to the method 2. I just need.

On the other hand, a plurality of slitters of the present invention are arranged in the width direction of the sheet, and only one set of slitter blades for cutting each sheet in the sheet feeding direction is arranged in the sheet feeding direction. You can also. In this case, at least a part of the slitter blades is configured to move in the sheet width direction and to have a variable angle with respect to the sheet feeding direction. By moving in a loaded state from the cutting position to the cutting position of the next order, an inclined cutting line is formed, and after reaching the cutting position of the next order, a cutting line of the next order is continuously formed. In this way, the order of cutting can be changed without stopping sheet feeding only by a single slitter blade group.

Next, the slitter blade is inclined at a predetermined angle with respect to the width direction of the sheet, and moves in the width direction of the sheet in a direction to reduce the repulsive force from the conveyed sheet, and cuts along the cutting line. Can be formed. Further, the slitter blades are disposed so as to be inclined outward on the downstream side in the sheet conveying direction, and form a cutting line while moving in a direction from the outside to the inside of the sheet in the width direction of the sheet. can do. Conversely, the slitter blades are arranged so as to be inclined outward on the upstream side in the sheet conveyance direction, and move in the direction from the inside to the outside of the sheet in the width direction of the sheet. A cutting line may be formed.

That is, when the slitter blade is arranged in a state inclined with respect to the width direction of the sheet, the slitter blade performs cutting for forming a cutting line while intersecting with the sheet feeding direction. In this case, by performing the cutting while moving the slitter blade in the sheet width direction as described above, the repulsive force received from the sheet can be reduced, and a smooth cutting line can be formed. In this case, the angle between the sheet feeding direction and the slitter blade is α, and the sheet feeding speed is V
In the case of L, by setting the moving speed VS of the slitter blade in the width direction of the sheet so as to substantially satisfy tan α = VS / VL, the repulsive force from the sheet can be extremely reduced. Smooth cutting becomes possible.

Next, arbitrary or specific two of the plurality of slitter blades are moved in a direction approaching or separating from each other in the sheet width direction in a state where they are inclined in opposite directions. Thereby, the sheet can be configured so that the cutting lines inclined in opposite directions are formed almost simultaneously on the sheet. With this configuration, when the sheet receives the repulsive force from the slitter blade due to the formation of the cutting line, since the inclination angles of the slitter blades are opposite to each other, the components of the repulsive force along the width direction cancel each other. As a result, problems such as meandering of the sheet hardly occur. In order to obtain such an effect, it is sufficient that at least a portion of the slitter blade inclined in the opposite direction has an overlapping portion in a period from the start of cutting the sheet to the end of cutting the sheet. Therefore, if such an overlap occurs during the cutting period, the timing of the start of cutting or the timing of the end of cutting of both slitter blades does not necessarily have to match.

The slitter blade can be provided so that the inclination angle with respect to the width direction of the sheet can be changed continuously or stepwise. This makes it possible to freely change the angle at which the cutting line is formed with respect to the sheet according to, for example, the sheet conveying speed and the material. In addition, by appropriately changing the inclination angle of the slitter blade during sheet cutting, it is possible to form a cutting line with a slightly complicated trajectory. For example, the slitter blade can be provided so as to be rotatable around an axis that intersects the sheet surface, and can be configured to form a cutting line at an inclination angle corresponding to a rotation angle position around the axis. In this case, the rotation of the slitter blade around the axis may be driven by rotation driving means such as a motor, but may be non-driven.

Specifically, the slitter blade can be provided in a state in which free rotation within a predetermined angle range is allowed around the axis, and when forming a cutting line inclined with respect to the sheet, The angle can be changed according to the direction of the repulsive force received from the sheet. The direction of the repulsive force that the slitter blade receives from the sheet changes according to the direction of the relative movement speed of the slitter blade with respect to the sheet. With the above-described configuration, the slitter blade naturally has a direction in which the repulsive force decreases. In order to reduce this, a smooth cutting line can be formed.

The slitter blade may be a disk-shaped rotary blade. In this case, the rotary blade may be freely rotated by friction with a sheet, or may be positively driven to rotate by a driving means such as a motor.

[0031]

Embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 conceptually shows a slitter 1 as one embodiment of the present invention. That is, the slitter 1 has two slitter units 2 and 3 arranged adjacent to each other along the flow direction of a cardboard sheet (hereinafter, simply referred to as a sheet) DS conveyed in the direction of the arrow in the figure. Each of the units 2 and 3 includes a plurality of slitter blades 20 (slitter blade group) arranged in the width direction of the sheet DS, and is used alternately. As shown in FIG. 2A, each slitter unit 2
Or 3 is the sheet D by the upper and lower slitter blades 20, 20
S is cut in the feeding direction. Here, two sets of slitter blades 2 located at the outermost positions of the respective slitter units 2 and 3
By means of 0 and 20, trimming pieces TM having a predetermined width are formed on both sides of the cardboard sheet DS (FIG. 11 and the like).

In applying the present invention, each slitter blade 2
Since the movement mechanisms in the sheet width direction 0 and 20 have the same configuration, the slitter unit 2 is typically shown in more detail in FIG. Slitter unit 2 is sheet D
S-shaped slitter blades 20, 20 that rotate in opposite directions with respect to each other across the S pass line PL,
These constitute the main body of the slitter blade unit 24, and a plurality (for example, five) of the slitter blade units 24 are provided in the width direction of the sheet DS (see FIG. 5). Then, by supplying the sheet DS between the respective slitter blades 20, 20, the sheet DS is cut so as to be sandwiched in the feeding direction. The slitter blades 20, 20 of each slitter blade unit 24 are configured to be movable between a load position where the sheet DS is cut and an unload position where the sheet DS is separated from the sheet DS. Each slitter blade unit 2
Numerals 4 are arranged so as to be freely movable in the sheet width direction, and are positioned and adjusted in accordance with a change in the number of cuts or a cut width due to a change in order. Further, as shown in FIG. 1B, the upper and lower slitter blades 20, 20 are provided rotatably about a predetermined axis O orthogonal to the sheet surface, and have an angle α with respect to the feeding direction F of the sheet DS. Is variable.

In FIG. 5, a pair of beams 28, 30 are extended in parallel at predetermined intervals in the vertical direction between the frames 26, 26 of the slitter unit 2 so as to sandwich the pass line PL of the sheet DS. Have been. As shown in FIG. 4, the same number of moving members 36 as the slitter blades 20 are slidably supported on the upper beam 28 via a pair of rollers 34. As shown in FIG. 6, a nut 36a rotatably provided on the moving member 36 is screwed to a screw shaft 38 which is erected and fixed between the frames 26,26. By driving individual servo motors 40 as individual actuators provided on each moving member 36, a gear 40a and a nut 36a on the motor side are driven.
Meshed with the gear 36b formed on the
is driven to rotate, whereby the individual moving members 36 and thus the plurality of slitter blades 20 are individually moved and positioned in the horizontal direction.

As shown in FIG. 6, in each slitter blade unit 24, a disk-shaped slitter blade 20 arranged substantially perpendicularly to the sheet surface of the sheet DS is laterally (sheet width) from the lower case 60. ) Is rotatably supported by a rotating shaft 61 protruding in the direction (direction), and a transmission mechanism 63 such as a gear mechanism is driven by a motor 62 accommodated in the lower case 60.
Are individually driven to rotate. A common drive shaft that is driven to rotate by a motor or the like is provided between the frames 26 in FIG. 5, and the rotation of the common drive shaft is transmitted to the slitter blades 20 via a clutch or the like, so that each slitter blade 2
0 may be driven to rotate by a common drive source such as the motor.

On the other hand, the lower case 60 projects downward from the upper case 64 and has a rotating shaft 6 rotatably supported by a bearing 64a in the upper case 64.
5 is connected to the lower end. Thereby, as shown in FIG. 1, the slitter blade 20 can freely rotate around an axis O substantially perpendicular to the sheet surface of the sheet DS. Note that the position of the axis O is set to be shifted by a predetermined distance upstream or downstream (in this embodiment, upstream) of the rotation shaft 61 of the slitter blade 20 in the sheet DS feeding direction. As a result, the repulsive force that the slitter blade 20 receives from the sheet DS mainly acts on the position deviated from the axis O, so that the slitter blade 20 can be smoothly rotated around the axis O.

Here, the rotation angle range of the slitter blade 20 is changed, for example, as shown in FIG. 6B, by a stopper 127 formed on the rotation shaft 65 side and a stopper receiving part formed on the upper case 64 side. 128 can be defined. In the present embodiment, one end of the rotating shaft 65 is inserted inside the cylindrical bearing portion 64a, and the stopper 127 is formed so as to protrude from the side surface of the rotating shaft 65. An arc-shaped groove 1 is formed on the inner surface of the bearing portion 64a corresponding to the movement locus of the stopper portion 127.
29 are formed. The stopper portion 127 moves in the groove 129, and both end surfaces thereof are the stopper receiving portions 128. When the stopper portions 127 come into contact with the stopper receiving portions 128, the rotation shaft 65 is moved beyond the stopper receiving portions 128. Is prevented from rotating.

Next, as shown in FIG.
Is provided so as to be rotatable within a certain angle range with the shaft 44 as a fulcrum with respect to the lower side of the moving member 36. Upper case 64
Is connected to the piston rod 46a of the cylinder 46, and the extension of the piston rod 46a causes the upper case 64, and thus the slitter blade 20, to retreat upward from the load position for cutting the sheet DS, as shown in FIG. To rotate.

Returning to FIG. 4, the lower beam 30 is also provided with the same moving member 36 as that of the upper beam in a vertically symmetric configuration, and the lower slitter blade 20 is also provided with the upper slitter blade 20. In the same manner as described above, the cylinder 46 retracts from the load position to the lower unload position.
Functionally, the configuration is the same as that of the upper side. The trimming pieces TM that are cut pieces on both sides of the sheet DS are suctioned and collected by the suction duct 50.

FIG. 8 is a block diagram showing an electrical configuration of a control system of the slitter 1. That is, as shown in FIG. 2A, the slitter 1 includes an I / O port 131, a CPU 132, a ROM 133, and a RAM 13 connected thereto.
4 and the like.
33 stores a control program for controlling the slitter 1. Further, a higher-level production management device 180 is connected to the I / O port 131. Higher production management device 180
Manages the production of the entire corrugator line that performs cutting, etc.
For example, data of a production order such as the number of slitters and the width of the slitters is stored. When an order is changed, a control signal based on the data is transferred to the target slitter.

Next, a general-purpose operation unit 181 such as a keyboard and a touch panel and a timer 182 are connected to the I / O port 131, and the slitter blade group driving units 142 and 1 corresponding to the respective slitter units 2 and 3 are connected.
43 are connected. Each of the slitter blade group drive units 142 and 143 is
4 are included as many as the number of the slitter blade units 24. As shown in FIG. 8B, each individual drive unit 135 is configured to include the following elements connected to the I / O port 131. Servo drive unit 136: each slitter blade unit 2
4 is connected and drives the motor 40 for lateral movement. Also, a pulse generator 137 that knows the current position of the slitter blade 20 in the sheet width direction is connected. Cylinder drive unit 140: A cylinder 46 for loading and unloading the slitter blade 20 is connected and driven.

Hereinafter, the operation of the slitter 1 will be described mainly with respect to a control mode when an order is changed. Now, in a state where the slitter unit 3 of FIG. 1 is on standby and the slitter unit 2 is cutting, the upper production management device 1 of FIG.
It is assumed that an order change signal has been input from 80. This order change signal is output a predetermined amount before the end of the current order, and as shown in FIG.
With the arrival of the order change start point A, the slitter unit 2 moves up to the unload position as shown in FIG.
Instead, the slitter unit 3 moves down to the load position.
Conversely, if the order is changed from the state where the slitter unit 3 is cutting and the slitter unit 2 is waiting, the slitter unit 2 descends at the arrival of the order change start point A, and the slitter unit 3 is further moved. It means rising. Hereinafter, taking the former case as an example, the control flow will be described with reference to the flowcharts of FIGS. 9 and 10.

First, in S1 to S3 of FIG. 9, a higher-order production control device 180 (FIG. 8) sends a slitter unit (hereinafter, referred to as a unit (I); a slitter unit 2: FIG. 1 in this embodiment) of the current order. The position of each slitter blade 20 (C1 to C5: cutting position of the current order) and the slitter unit (hereinafter, unit) of the next order
(II). In the present embodiment, the slitter unit 3 (FIG. 1)
The position of each slitter blade 20 (C1 'to C5': cutting position of the next order) is received as order change information. As shown in FIG. 8, the sheet feed speed VL is detected and captured by a pulse generator 83 connected to a rotating unit such as a roll of a sheet feeder that rotates at a speed synchronized with the sheet feed. Here, what is directly required for order change is the positions C1 'to C5' of the slitter blades 20 on the next order side.
The calculation may be performed based on next order information such as a sheet width, a flap width, and a trimming width. In the present embodiment, it is assumed that the number of cuts of the current order is 3, the number of cuts of the next order is 4, and the width of the trimming piece TM is reduced on the next order side.

Next, in S4, the amount of movement of each slitter blade 20 on the next order side in the sheet width direction is calculated by comparing the current position with the next order positions (C1 'to C5'). If the number of collections is changed, S
In 5, the slitter blades 20 of the unit (II) to be unloaded in the next order (unused ones) are selected. Next, in S6, the allowable loss length LL of the sheet DS for order change is received.

As shown in FIG. 32, when the width of the trimming piece TM is changed in accordance with the order change, the cutting line K1 of the current order and the cutting line K2 of the next order are discontinuous as they are. Therefore, according to the method shown in FIGS. 11 and 12 (hereinafter referred to as method 1), these cutting lines K1 and K2
Is performed when the order is changed. In the illustrated slitter blades 20, the one represented by a solid line indicates a loaded state, and the one represented by a broken line indicates an unloaded state. Further, regarding the cutting line, the current order is indicated by a solid line, and the next order is indicated by a chain line.

That is, as shown in FIG. 11A, the slitter blade 20 of the unit (I) (2) cuts in the current order in a state substantially parallel to the flow direction of the sheet DS. Then, when the order change position A arrives, the slitter blade 20 of the unit (I) (2) does not immediately go into the unloading state, as shown in FIG. (FIG. 10, S12, S13: Hereinafter, cutting is performed while moving the sheet outward in the width direction of the sheet).
The movement in the sheet width direction is also called “lateral movement”). As a result, as shown in FIG.
A cutting line Ki that is inclined outward with respect to the feed direction of S is formed.

Then, as shown in FIG. 12A, when the slitter blade 20a reaches the cutting position of the next order (position B), the lateral movement of the slitter blade 20 is stopped (S1).
4) Put the unit (I) in the unloaded state (S1)
6). On the other hand, as shown in FIG.
In, the positioning of the slitter blades 20 to the next order position has already been completed, and the slitter blades 20 are loaded at the timing when the cutting line K2 of the next order is connected to the inclined cutting line Ki (S15). Start cutting the next order. Thereby, between the current order and the next order, the cutting lines K1 and K2 are connected by the inclined cutting line Ki, and a non-separable portion is formed between the trimming piece TM and the remaining sheet body. Be avoided. As shown in FIG. 6B, the slitter blade 20 having the inclined cutting line Ki can return to a predetermined reference direction after unloading, for example, a direction substantially parallel to the sheet DS feeding direction. A biasing member 128a such as a spring for biasing the slitter blade 20 in the direction may be provided between the stopper 127 and the stopper receiving portion 128, for example.

When the slitter blade 20a is inclined in a loaded state from a state parallel to the sheet feeding direction, the slitter blade 20a receives a large repulsive force from the sheet DS. Therefore, it is necessary to laterally move the slitter blade 20a in a direction in which the repulsive force is canceled (in the above example, the outer side in the sheet width direction). Here, when it is desired to set the inclination angle of the slitter blade 20a to α, the transverse feed speed VS of the slitter blade 20a is set so that VS = VL · tanα ‥‥‥ (1). That is, as shown in FIG.
The slitter blade 20a moves the aforementioned axis O against the sheet DS.
By rotating around (FIG. 6), the repulsive force received from the sheet DS is reduced, and a cutting line Q inclined at an angle α satisfying the above equation (1) is formed.

In this case, as the angle α increases, the repulsive force from the sheet DS increases, and the lateral movement speed VS of the slitter blade 20a must be increased accordingly. Therefore, the angle α should be within the allowable range. It is desirable to make it smaller. Here, when the allowable loss length of the sheet DS at the time of order change is set to LL, as shown in FIG. 15, the cutting line Ki inclined using the full loss length LL.
Is formed, the angle α can be set as small as possible. For example, in the flowchart of FIG. 10, in S7, the lateral movement speed VS is set so that the cutting is performed under the condition of the angle α. That is, as shown in FIG. 15, if the lateral movement distance of the slitter blade 20 required to reach from the cutting position P1 of the current order to the cutting position P2 of the next order is d, the time t at which the lateral movement is allowed is t L
Since L / VL, VS can be set as Vs = d / t = VL ＝ d / LL ‥‥ (2).

Here, the lateral feed speed V of the slitter blade 20a
Since a certain response delay is expected before S reaches the set value, VS is gradually increased from 0 as shown in FIG. 16 to the set value so that the repulsive force from the seat DS does not increase rapidly. It is desirable to control it to reach it. At this time, with the occurrence of a section where VS is gradually increased,
In some cases, it is necessary to set the allowable loss length VL of the sheet DS to be long or to set the set values of α and VS to be large.

Here, as shown in FIG. 17, the slitter blades 20a on both sides have the inclination directions opposite to each other, and simultaneously form the cutting line Ki while moving laterally in a direction approaching each other in the width direction of the sheet DS. Becomes Thereby, the repulsive forces in the sheet width direction from the slitter blades 20a generated on both sides of the sheet cancel each other out, and the meandering of the sheet DS is less likely to occur.

The following method is also possible as a method for making the cutting line continuous between the current order and the next order (hereinafter referred to as method 2). That is, as shown in FIG. 18A, when changing the order, the slitter blades 20a at both ends of the unit (II) (3) in charge of the next order are
The slitter blade 20 is positioned at a position connected to the cutting line K1 of the current order, and the other slitter blades 20 are positioned at the cutting position of the next order (all are unloaded). And
As shown in FIG. 7B, instead of the unit (I) (2) in charge of the current order being in the unloaded state,
Unit (II) (3) is in the loaded state. The slitter blade 20a is in a loaded state at a position connected to the cutting line K1 of the current order, and further, is inclined by moving in the loaded state to the cutting position of the next order while being inclined with respect to the feeding direction of the sheet DS. Forming Ki. Then, as shown in FIG. 19, after reaching the cutting position of the next order, the slitter blades 20a return to a state substantially parallel to the feeding direction of the sheet DS with the stop of the lateral feeding, and continue to the next order. Is formed. When returning the slitter blade 20a to the above-mentioned parallel state, as shown by a two-dot chain line in FIG. 16, gradually reducing the lateral movement speed VS is necessary to reduce the repulsive force from the sheet DS. desirable.

Here, the two slitter units 2 and 3
Of these, it is possible to have a configuration in which the angle of the slitter blade 20 is variable for only one of them and the angle of the other slitter blade 20 is fixed. In this case, if the unit on which the angle of the slitter blade 20 is variable is the current order,
If the order is changed according to the above-described method 1 and the order is changed to the next order, the cutting line can be made continuous in any case by changing the order according to the method 2.

In the above embodiment, the slitter blade 2
0 is configured to be freely rotatable around the axis O, but as shown in FIG. 30, this is rotated by a motor 66 provided in the upper case 64 to thereby adjust its angular position. Can be configured to be changeable. In this case, the motor 66 is connected to the control system shown in FIG. 8 to drive the servo drive unit 138 and the current angular position of the slitter blade 20 connected to the servo drive unit 138. Is provided. Meanwhile, sheet DS
Is relatively slow in the width direction of the sheet D.
If the repulsive force received from the sheet S can be kept below a certain level, the sheet D is kept in a state in which the slitter blade 20 is oriented in the sheet feeding direction, in other words, with its angular position fixed.
By moving in the width direction of S, an inclined cutting line can be formed.

On the other hand, as another example, as shown in FIG. 20, when changing the order, the slitter blades at both ends of the unit (I) (2) on the current order side are tilted with respect to the sheet DS feeding direction. From the cutting position of the current order,
By moving in a loaded state to an intermediate position between the cutting position of the current order and the cutting position of the next order, an inclined cutting line Ki is formed and then the unloaded state is formed. Further, the slitter blades at both ends of the unit (II) (3) on the next order side are loaded at the position leading to the cutting line Ki, and then inclined while being inclined with respect to the feeding direction of the sheet DS. By moving to the cutting position in the loading state, another inclined cutting line Kj is formed, and after reaching the cutting position of the next order, the horizontal feeding is stopped to make the sheet substantially parallel to the sheet feeding direction. Then, the cutting line K2 for the next order is formed.

As shown in FIG. 21 (a), when changing from an order in which trimming pieces are not formed to an order in which trimming pieces are formed, the slitter is used in the next order unit (II) (3). While the blade 20a is inclined, the sheet DS is cut inward from the edge thereof to form an inclined cutting line Ki. After reaching a predetermined cutting position, the cutting line Ki is parallel to the sheet DS feeding direction. By shifting to the state and forming the cutting line K2 for continuously forming the trimming piece TM, the non-separable state between the trimming piece TM and the remaining sheet body can be eliminated. On the other hand, on the other hand, when the order for forming the trimming piece is changed from the order for forming the trimming piece to the order for not forming the trimming piece, as shown in FIG. At the cutting line K1
The above-mentioned non-cutting state can be similarly solved by forming the inclined cutting line Ki by separating the slitter blade 20a forming the sheet from the edge of the sheet DS while tilting the slitter blade 20a (FIG. 21). Shows the locus of the relative movement of the slitter blade 20a with respect to the sheet DS).

In the embodiment described above, only the slitter blades 20a at both ends related to the formation of the trimming piece TM form the inclined cutting line Ki. However, by tilting and laterally moving the slitter blade 20 located in the middle in the loaded state, the slitter blade 20 shown in FIG.
As shown in FIG. 2, it is also possible to connect the cutting lines K3 (current order side) and K4 (next order side) for forming the cutting pieces with inclined cutting lines Ki.
If the width of the trimming piece TM does not change when the order is changed, as shown in FIG. 23, the inclined cutting line Ki is formed only for the cutting line for forming the catch piece. When the width of the trimming piece TM is always kept constant, the angle of the slitter blades 20a at both ends is fixed, and the angle changing mechanism (the rotating shaft 65, the motor 66, or the like) can be omitted. Conversely, when the continuation of the cutting line at the time of order change is limited to the one related to the formation of the trimming piece TM, the angle changing mechanism can be omitted for the intermediate slitter blade 20. .

Next, as shown in FIG. 24, the slitter 1 of the present invention may be configured to include only one slitter unit (a set of slitter blades) having the same configuration as that described above. FIG. 25 and FIG. 26 are diagrams illustrating the operation. First, as shown in FIG. 25 (a), it is assumed that the slitter unit 2 cuts in the current order in a three-catch order in which trimming pieces TM are formed on both sides due to the formation of the cutting lines K1 and K3 (center). Slitter blade is in the unloaded state). At this time, each slitter blade 20
Are held substantially parallel to the sheet DS feeding direction. Then, when shifting to four-cutter cutting due to an order change, as shown in FIG. 9B, the central slitter blade 20 shifts to the load state and each slitter blade 2
0 moves laterally in the loaded state, and moves to the next order cutting position while forming an inclined cutting line Ki. Then, as shown in FIG. 26 (a), after reaching the cutting position of the next order, the sheet DS returns to a state substantially parallel to the feeding direction of the sheet DS, and the cutting lines K2 and K4 continue to be formed. The cutting is performed in the order of four cutters in which a narrow trimming piece TM is generated. This allows
The cutting order can be changed without stopping the feeding of the sheet DS by only the single slitter unit 2.

In the above embodiment, the sheet DS
Although the cutting line is formed by two slitter blades 20 sandwiching the upper and lower sides, a single-blade slitter blade 90 as shown in FIGS. 27A to 27C may be used. 1
The sheet blade is thin, for example, having a thickness of 2 mm or less, and rotates at a speed of about 2 to 4 times the same in the same direction as the sheet feeding speed (line speed) to cut the sheet. Such a slitter blade 90 may be received by slitter blade receiving means of various modes, for example, a brush 93 shown in (a), or as a plurality of blade guide portions made of plastic or the like as shown in (b). May be received by the receiving disk 94. Further, as shown in FIG. 27C, the structure may be such that the slitter blade 90 is inserted between the two receiving disks 96 normally urged in the approaching direction by the spring 95.

Further, as shown in FIG.
Are formed to have the same diameter, and can be rotatably held by the holder 100 such that a predetermined gap 99 is formed between adjacent ones by inserting the spacer 98. The holder 100 is connected to one end of a shaft 100a supported by a bearing portion 100b so as to be freely rotatable. FIG. 29A shows an example of the detailed configuration. That is, a support shaft 101 is provided on the holder 100, and a pair of rollers 102, 102 are arranged on the support shaft 101 at a predetermined interval in the axial direction so as to face each other. Then, the rollers 102, 10
Between the two, the plurality of receiving disks 94 are externally mounted on the support shaft 101 and sandwiched between the rollers 102, 102, whereby the receiving disk 94 rotates integrally with the support shaft 101. I have. A spacer 98 having a smaller diameter than that of the receiving disk 94 is interposed between the adjacent receiving disks 94, 94, so that the adjacent receiving disks 9
4, a gap 99 slightly smaller than the thickness of the slitter blade 90 is formed.

Then, as shown in FIG. 29B, the slitter blade 90 enters the gap 99 while elastically deforming the receiving discs 94 on both sides outward, and cuts the sheet. In this case, as shown in FIG.
For example, when the slitter blade 90 that has entered between them moves in the width direction of the sheet DS and rotates around the rotation shaft 65, the holder 100 also rotates integrally with the receiving disk 94 to form the shaft 100a.
Will rotate in conjunction with this. The receiving disk 94 may be positively driven to rotate at substantially the same rotation speed as the slitter blade 90, for example, by driving means such as a motor connected to the support shaft 101.

In the above embodiment, a single slitter has been described. However, as shown in FIG. 3, a slitter / scorer apparatus 201 in which scorers are provided in series may be used. In this case, each slitter unit 2, 3
Are configured as slitter / scorer units (hereinafter abbreviated as srisco units) 202 and 203. Each Srisco unit has a scorer unit 152 to 1
53 and the slitter units 2 and 3 are adjacently arranged in series in the sheet feeding direction, and this is a unit. Scorer units 152 and 153
Are scorer disks 2 as shown in FIG.
10, 210, the sheet DS is to be creased along the feeding direction (parallel to the feeding direction).
Etc., has a moving mechanism similar to the slitter unit 2 shown in FIG.
When the order is changed, the fold forming position can be changed individually.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a slitter as one embodiment of the present invention.

FIG. 2 is a diagram showing main parts of a slitter unit and a scorer unit.

FIG. 3 is a diagram conceptually showing a slitter scorer (Srisco) having a double structure.

FIG. 4 is a front view showing a part of the slitter blade unit shown in FIG.

FIG. 5 is a side view thereof.

FIG. 6 is a front view showing an example of an actuator for positioning and moving a slitter blade, and a schematic plan view showing an operation of an angle changing mechanism thereof.

FIG. 7 is a front view schematically showing the operation of two slitter units when an order is changed.

FIG. 8 is a block diagram showing an example of a control system of the slitter in FIG. 1;

FIG. 9 is a flowchart showing the flow of the processing.

FIG. 10 is a flowchart following FIG. 9;

FIG. 11 is a process explanatory view of a first method of order change using two slitter units.

FIG. 12 is a process explanatory view following FIG. 11;

FIG. 13 is an explanatory view showing a process of forming an inclined cutting line.

FIG. 14 is a diagram illustrating a relationship between a sheet feed speed, a lateral movement speed of a slitter blade, and an inclination angle of the slitter blade.

FIG. 15 is a diagram illustrating a relationship between an allowable loss length of a sheet and a tilt angle of a slitter blade according to an order change.

FIG. 16 shows the transition of the inclination angle and the lateral movement speed of the slitter blade when transitioning between a state where a cutting line parallel to the sheet feeding direction is formed and a state where a cutting line which is also inclined is formed. FIG.

FIG. 17 is a diagram illustrating a state in which cutting lines inclined in opposite directions are formed on both sides of the sheet.

FIG. 18 is a process explanatory view of a second method of order change using two slitter units.

FIG. 19 is a process explanatory view following FIG. 18;

FIG. 20 is a process explanatory view of a third method of order change using two slitter units.

FIG. 21 is an explanatory diagram in a case where an order is changed between an order in which trimming pieces are generated and an order in which trimming pieces are not generated.

FIG. 22 is a process explanatory view of a modification of the first method of order change.

FIG. 23 is a process explanatory view of another modified example.

FIG. 24 is a conceptual diagram of a slitter including only one slitter unit.

FIG. 25 is a process explanatory view showing an example of order change using the order.

FIG. 26 is a process explanatory diagram following FIG. 25;

FIG. 27 is a schematic view showing some examples of a slitter apparatus having a single-blade slitter blade.

FIG. 28 is a schematic view showing another example.

29 is a partial cross-sectional view showing the detailed structure of the blade guide section of FIG. 28 and an explanatory diagram of its operation.

FIG. 30 is a partial cross-sectional side view showing an example of a slitter provided with a motor that rotationally drives a slitter blade around an axis substantially perpendicular to a sheet surface.

FIG. 31 is a perspective view showing a state in which trimming pieces are formed by the slitter device.

FIG. 32 is an explanatory view showing a state in which an undivided portion is formed with a change in the width of a trimming piece.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slitter 2, 3 Slitting unit (slitting blade group) 20 Slitting blade 94 Receiving disk (slitting blade receiving means, blade guide part) DS Corrugated cardboard sheet Ki Slant cutting line 201 Slitting / scoring unit

Claims (17)

[Claims] 1. A disc-shaped first member provided on one sheet surface side of a sheet conveyed in a longitudinal direction, the second member being movable in a width direction of the sheet and having an angle formed with a sheet feeding direction. One slitter blade, disposed on the opposite side of the first slitter blade across the sheet, in conjunction with the first slitter blade, movable in the sheet width direction and the sheet feeding direction A second slitter blade in the form of a disc, the angle of which is variable, and cutting the sheet in the feed direction between the first and second slitter blades; By moving the slitter blades in a state in which the slitter blades are inclined at a predetermined angle with respect to the feeding direction of the sheet, in conjunction with each other in the width direction of the sheet, the cutting line inclined with respect to the feeding direction of the sheet is provided. Can be formed Slitter, wherein the door. 2. A disk-shaped slitter which is provided on one sheet surface side of a sheet conveyed in a longitudinal direction, is movable in a width direction of the sheet, and has a variable angle with respect to a feeding direction of the sheet. A blade and a slitter blade receiver provided at a position corresponding to the slitter blade, on the opposite side of the sheet with the sheet interposed therebetween, and interlocking with the slitter blade and having an angle formed with the sheet feeding direction which is variable. Means for receiving the blade tip of the slitter blade by the slitter blade receiving means, the sheet is cut in the longitudinal direction by the slitter blade, and the slitter blade and the slitter blade receiving means, In a state in which the sheet is tilted at a predetermined angle with respect to the feeding direction, the sheets are tilted with respect to the feeding direction by moving the sheet in the width direction of the sheet in conjunction with each other. Slitter, characterized in that to be able to form a disconnection. 3. The slitter blade receiving means is arranged adjacent to each other on the other sheet surface side of the sheet in a direction intersecting the sheet conveying direction, and is capable of being elastically displaced along the arrangement direction. A plurality of blade guide portions, which are provided and are capable of moving integrally with each other in the width direction of the sheet in cooperation with the slitter blade and integrally changing the angle between the sheet feed direction and the sheet guide portion. The slitter according to claim 2, wherein the sheet is cut in the longitudinal direction by the slitter blade when the cutting edge of the slitter blade enters between the blade guide portions. 4. The cutting order of the sheet can be changed by changing the position of the slitter blade in the width direction of the sheet, and the slitter blade is viewed from the cutting position of the current order. In the direction approaching the cutting position of the next order, the sheet is moved in a loaded state in the width direction of the sheet while being inclined with respect to the feeding direction of the sheet, so that the cutting line of the current order and the cutting line of the next order are mutually separated. 4. An inclined cutting line for connection is formed.
The slitter according to any of the above. 5. A plurality of slitter blades for cutting the sheet in the feeding direction are arranged in a width direction of the sheet, and at least a part of the plurality of slitter blades moves in a width direction of the sheet. 2. A slitter blade having a variable angle with respect to the sheet feeding direction which is possible and variably provided, wherein the slitter blade having the variable angle is a rotary blade which is rotationally driven by independent driving means. 5. The slitter according to any one of items 1 to 4. 6. A plurality of sets of slitter blades arranged in the width direction of the sheet and each of which cuts the sheet in the sheet feeding direction are arranged in the sheet feeding direction. While any of the sets is cutting the current order in the loaded state, the other set of slitter blades waits for the next order in the unloaded state, and when there is a command to change the order, the current Instead of shifting from the load state to the unload state of the arbitrary set of slitter blades (hereinafter, referred to as a current order slitter blade group) that has cut the order, the other set of slitter blades (hereinafter, referred to as the next set). The order slitter blade group shifts from the unload state to the load state, and cuts the next order. The current order slitter blade group and the next order are cut. In at least one of the slitter blade groups, at least a part of the plurality of slitter blades constituting the slitter blade group is provided so as to be movable in a direction intersecting with the sheet feeding direction, whereby the slitter A slitter characterized in that a cutting line inclined with respect to the feeding direction can be formed on the sheet by a blade. 7. At least one of the two outermost slitter blades of the plurality of slitter blades forms a strip-shaped trimming piece on a corresponding side in the width direction of the sheet, and the sheet includes a plurality of slitter blades. When the width of the trimming piece is changed at the time of order change, the slitter blade for forming the trimming piece is provided so as to be movable in the width direction of the next order. The inclined cutting for connecting the cutting line of the current order and the cutting line of the next order by moving in a loading state while being inclined with respect to the sheet feeding direction in a direction approaching the cutting position of the sheet. A slitter according to claim 6, adapted to form a line. 8. The slitter according to claim 6, wherein the slitter blade movably provided in the width direction of the sheet has a variable angle with respect to the sheet feeding direction. 9. At least a part of the slitter blades belonging to the current order slitter blade group is movable in the width direction of the sheet and variably formed at an angle with the sheet feeding direction. During the order change, while moving in a loaded state from the cutting position of the current order to the cutting position of the next order while being inclined with respect to the sheet feeding direction, while forming the inclined cutting line, The slitter blade belonging to the next-order slitter blade group, after being brought into a loaded state at a position leading to the inclined cutting line, starts cutting the next order. 10. Slitter. 10. A slitter blade belonging to the next-order slitter blade group, wherein at least a part of the slitter blades is movable in the width direction of the sheet and variably formed with the sheet feeding direction. When the order is changed, after being positioned in the unload state at a position leading to the cutting line of the current order, the current order slitter blade group is changed to the unload state, and is changed to the load state. Forming the inclined cutting line by moving in the loading state to the cutting position of the next order while being inclined with respect to the sheet feeding direction, and further forming the inclined cutting line after reaching the cutting position of the next order,
9. The slitter according to claim 6, wherein a cutting line of the next order is continuously formed. 11. A set of a plurality of slitter blades arranged in a width direction of the sheet, and each set of slitter blades for cutting the sheet in the sheet feeding direction is arranged in the sheet feeding direction. Some of them are configured to be movable in the width direction of the sheet and to have a variable angle with respect to the feeding direction of the sheet. When changing the order, the cutting of the current order is performed while being inclined with respect to the feeding direction of the sheet. The inclined cutting line is formed by moving from the position to the cutting position of the next order in the loaded state, and after reaching the cutting position of the next order, the cutting line of the next order is continuously formed. The slitter according to claim 4. 12. A slitter blade movably provided in a width direction of the sheet, wherein the slitter blade is inclined at a predetermined angle with respect to the width direction of the sheet, and the slitter blade is moved from the sheet conveyed in the width direction of the sheet. The slitter according to any one of claims 1 to 5, wherein the inclined cutting line is formed while moving at a speed that reduces the repulsive force of the slitter. 13. When the angle between the sheet feeding direction and the slitter blade is α and the sheet feeding speed is VL, the moving speed VS of the slitter blade in the sheet width direction is substantially 13. The slitter according to claim 12, wherein the slitter is set so as to satisfy tan α = VS / VL. 14. An arbitrary or specific two of the plurality of slitter blades move in a direction approaching or separating from each other in a width direction of the sheet in a state where they are inclined in directions opposite to each other, and 14. The slitter according to claim 5, wherein a cutting line inclined in a direction is formed substantially simultaneously with the sheet. 15. A slitter blade movably provided in a width direction of the sheet, is rotatably provided around an axis intersecting with the sheet surface, and has an angle corresponding to a rotation angle position around the axis. The slitter according to any one of claims 1 to 5 and 8 to 14, which forms the inclined cutting line. 16. The slitter blade is provided so that free rotation within a predetermined angle range is allowed around the axis, and the slitter blade forms the inclined cutting line with respect to the sheet. 16. The slitter according to claim 15, wherein the angle is changed according to the direction of the repulsive force received from the sheet. 17. The slitter according to claim 6, wherein said slitter blade is a disk-shaped rotary blade.