Slitter blade positioning device

Abstract

To provide a cutter positioning apparatus of a slitter which can shorten time for positioning a plurality of cutter at slit processing positions, and furthermore shorten preparation time, and can improve productivity.SOLUTION: A cutter positioning apparatus 1 comprises: a base 2; a mobile body 3 which is movable in a first direction X orthogonal to a feed direction of a continuous sheet, on the base 2; a drive part 5 which drives the mobile body 3; a plurality of cutter holders 6 each of which is capable of holding a cutter 10, and is movable in a first direction X on the base 2; a plurality of first engaging parts 8 which are provided for each cutter holder 6, and each of which engages the mobile body 3 with the cutter holder 6 in a releasable manner; and a control part which controls the drive part 5 and the plurality of first engaging parts 8.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a blade positioning device that is mounted on a slitter that uses multiple blades to divide a continuous sheet (such as a continuous film) unwound from a roll into multiple pieces in the width direction, and that positions each of the multiple blades at a slit processing position. [Background technology]

[0002] A known blade positioning device of this type includes a movable body movable in a first direction perpendicular to the feed direction of the continuous sheet, a plurality of blade holders, each of which holds a blade and is movable in the first direction, and an engagement portion provided on the movable body that releasably engages with one of the blade holders (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 5-277986 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the blade positioning device in Patent Document 1 is configured so that the movable body repeatedly moves back and forth to transport each blade holder to a specified position, which results in a problem that the preparation time required to position all the blades at the slit processing positions and start slit processing is long, hindering productivity.

[0005] Therefore, the present invention has been made in consideration of such circumstances, and has an objective of providing a blade positioning device for a slitter that can shorten the time required to position multiple blades at the slit processing position, and thus shorten preparation time and improve productivity. [Means for solving the problem]

[0006] The blade positioning device of the slitter according to the present invention is With the base, a movable body that is movable on a base in a first direction perpendicular to a feed direction of the continuous sheet; A drive unit that drives the moving body; a plurality of blade holders each capable of holding a blade and each movable in a first direction on the base; a plurality of first engagement portions provided for each blade holder, each of which releasably engages the movable body with the blade holder; A control unit that controls the drive unit and the multiple first engagement units. This is a blade positioning device for a slitter.

[0007] Here, as one embodiment of the slitter blade positioning device according to the present invention, The blade holder further includes a plurality of second engagement portions provided for each blade holder, each of which releasably engages the base with the blade holder, and each of which is controlled by the control unit. The above configuration can be adopted.

[0008] Also, in this case, The control unit controls the first engagement unit and the second engagement unit so that the second engagement unit engages with the blade holder before the first engagement unit disengages the blade holder. The above configuration can be adopted.

[0009] Also, in this case, The control unit controls the first engagement unit and the second engagement unit so that the first engagement unit engages with the blade holder and then the second engagement unit disengages the blade holder. The above configuration can be adopted.

[0010] In another aspect of the slitter blade positioning device according to the present invention, In the case where some of the blade holders are used for slit processing and the remaining blade holders are not used for slit processing, The control unit synchronously controls the corresponding first engagement units so that when the first engagement unit disengages or engages the blade holder to be used, the first engagement unit also disengages or engages the adjacent blade holder not to be used. The above configuration can be adopted.

[0011] Also, in this case, The blade holder to be used is further provided with a setting unit for setting the blade holder to be used. The above configuration can be adopted. Effect of the Invention

[0012] According to the present invention, the movable body moves with the multiple first engagement parts engaged with the multiple blade holders, thereby simultaneously transporting the multiple blade holders. Then, along the way, the corresponding first engagement parts release the engagement, detaching the corresponding blade holder from the movable body and placing it in a predetermined position. Thus, according to the present invention, the movable body can position the multiple blades at their respective slit processing positions by moving once in one direction. Therefore, according to the present invention, the time required to position the multiple blades at their respective slit processing positions can be shortened, and thus the preparation time can be shortened and productivity can be improved. [Brief description of the drawings]

[0013] [Figure 1] Fig. 1(a) is a front view of a blade positioning device according to an embodiment of the present invention, in which the blade holders are assembled in their initial positions, and Fig. 1(b) is a front view of the blade holders deployed in their respective positions. [Diagram 2] Fig. 2(a) is a monitor provided in the slitter, and shows a screen for setting slitting conditions, and Fig. 2(b) shows the screen after the slitting conditions have been set. [Diagram 3] FIG. 3 is an enlarged front view of the main part of FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] FIG. 5 is an enlarged perspective view of a main part of the blade-positioning device. [Figure 6] 6(a) to 6(c) are explanatory diagrams of the operation of the blade-positioning device, showing the states in which each blade holder is deployed to a predetermined position. [Figure 7] 7(a) to (d) are explanatory diagrams continuing from FIG. [Figure 8] 8(a) and (b) are timing charts of the operations of the first engagement portion and the second engagement portion of the blade-positioning device. [Figure 9] 9(a) to 9(c) are schematic front views of the blade-positioning device in a state where each blade holder is deployed to a position determined based on the setting of different slit processing conditions. [Figure 10] 10(a) and (b) are explanatory diagrams of the operation of the blade positioning device, showing the state in which the position where the blade comes into contact with the continuous sheet is changed. [Figure 11] 11(a) to (c) are explanatory diagrams of another example of the operation of the blade positioning device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a blade positioning device mounted on a razor-cutting slitter will be described as one embodiment of the slitter blade positioning device according to the present invention. Note that the direction perpendicular to the feed direction of the continuous sheet to be slit, i.e., the left-right direction when the worker faces the device, is referred to as the first direction X, the direction perpendicular to the first direction X (in this embodiment, the direction inclined forward from the up-down direction when the worker faces the device) is referred to as the second direction Y, and the front-rear direction when the worker faces the device is referred to as the third direction Z.

[0015] As shown in FIG. 1, the blade positioning device 1 includes a base 2, a moving body 3, a driving unit 5, a plurality of blade holders 6, a plurality of first engagement units 8, a plurality of second engagement units 9, and a control unit. The base 2 is attached to a frame of a slitter (not shown). The moving body 3 is movable in a first direction X on the base 2 via a linear motion mechanism 4. The driving unit 5 drives the moving body 3. Each of the blade holders 6 can hold a blade 10, and each of the blade holders 6 can move in the first direction X on the base 2 via a linear motion mechanism 7. The first engagement units 8 are provided for each blade holder 6, and each of the first engagement units 8 releasably engages with the moving body 3 and the blade holder 6. The second engagement units 9 are provided for each blade holder 6, and each of the second engagement units 9 releasably engages with the base 2 and the blade holder 6. The control unit controls the drive unit 5, the plurality of first engagement units 8, . . . and the plurality of second engagement units 9, .

[0016] FIG. 1(a) shows a state where the moving body 3 is stopped at the initial position (the origin of the machine coordinate system). At the initial position, the moving body 3 engages and holds all the blade holders 6, through all the first engagement parts 8,. In this state, the moving body 3 moves in one direction from one end to the other end in the first direction X, so that all the blade holders 6, are transported at the same time. Then, in the middle of the movement, the corresponding first engagement part 8 disengages the corresponding blade holder 6, so that the corresponding blade holder 6 is detached from the moving body 3 and placed in a predetermined position. The detached blade holder 6 is fixed to the base 2 through the corresponding second engagement part 9 so that it does not move from the predetermined position inadvertently. FIG. 1(b) shows a state where each blade holder 6 is deployed at a predetermined position and the moving body 3 reaches the other end of the first direction X and stops. Here, the symbol E represents the left and right side edges of the continuous sheet, and the symbols S (S1 to S5) represent the slit processing positions.

[0017] Incidentally, when the slitter divides a continuous sheet into n pieces, it uses n-1 blades (holders 6, ...) and uses two blades (holders 6, 6) to cut off the left and right sides of the continuous sheet. Therefore, when the slitter divides a continuous sheet into n pieces, it uses a total of n+1 blades (holders 6, ...). In this embodiment, the total number of blade holders 6 is eight, and the slitter can divide the continuous sheet into a maximum of seven pieces.

[0018] In other words, when a division number smaller than the maximum division number is set, some of the multiple blades (holders 6, ...) will be used for slitting and some will not be used. When a division number smaller than the maximum division number is set, the control unit determines which blade holders will be used (hereinafter referred to as "used blade holders") and which blade holders will not be used (hereinafter referred to as "unused blade holders"). The control unit then determines the placement of the used blade holders 6 and the unused blade holders 6 based on the division width of the continuous sheet, the division number, and the settings for whether the blade holders 6 are used or not (settings of slitting conditions).

[0019] The used blade holder 6 is arranged so that the blade 10 it holds is positioned at the slit processing position S. The unused blade holder 6 is arranged so as to be aligned with the adjacent used blade holder 6. In other words, when a used blade holder 6 is detached from the moving body 3, the unused blade holders 6 between it and the next used blade holder 6 are also detached from the moving body 3.

[0020] The settings for the division width and number of divisions of the continuous sheet, and whether or not to use the blade holder 6 can be made by the operator via the user interface of the device (monitor C of the device shown in Figure 2(a)). Specifically, it is as follows. The division width is displayed and set in "current product width dimension" (or "next product width dimension" for the next reservation) by inputting the desired numerical value. The number of divisions is displayed and set in "current number of sheets" (or "next number of sheets" for the next reservation) by inputting the desired numerical value. The blade holder 6 to be used is set by selecting the number of the "blade to be used". Figure 2(b) shows the state after each setting has been made. The blade holder 6 to be used is visually differentiated from the blade holder 6 to be unused by changing or inverting the color of the corresponding number or the frame within it.

[0021] The arrangement of the blade holder 6 is managed by the machining coordinate system. The machining coordinate system has the center of the first direction X as its origin. The setting values ​​displayed under each number of "Used blade" in Fig. 2(b) represent the values ​​of the machining coordinate system. The continuous sheet is set so that its center in the width direction passes through the origin of the machining coordinate system.

[0022] As shown in Figs. 3 and 4, the base 2 includes a side plate 20, a first horizontal member 21, and a second horizontal member 22. The side plates 20 are provided in pairs at both ends in the first direction X, and are arranged so as to be parallel to each other. The first horizontal member 21 is a long strip-shaped member along the first direction X, and is arranged between the pair of side plates 20, 20 to connect the pair of side plates 20, 20. The second horizontal member 22 is also a long strip-shaped member along the first direction X, and is arranged below the first horizontal member 21 between the pair of side plates 20, 20 with a gap therebetween, and connects the pair of side plates 20, 20. The first horizontal member 21 and the second horizontal member 22 are arranged so that their plate surfaces are perpendicular to the second direction Y and parallel to each other.

[0023] The movable body 3 includes a base 30. The base 30 is a rectangular plate-like member along the first direction X, and is disposed between the first horizontal member 21 and the second horizontal member 22.

[0024] The linear motion mechanism 4 is a linear guide, and includes a rail 40 and a block 41. The rail 40 is a long member along the first direction X, and is attached to the surface of the first cross member 21 facing the base 30. The block 41 is a slider that slides on the rail 40. The block 41 is attached to the surface of the base 30 facing the first cross member 21. This allows the moving body 3 to move in the first direction X on the first cross member 21 via the linear motion mechanism 4.

[0025] The driving unit 5 includes a servo motor 50, a ball screw 51, a nut bracket 52, and a bracket 53. The driving unit 5 is disposed between the base 30 and the second cross member 22. The servo motor 50 is attached to the surface of the second cross member 22 facing the base 30. The ball screw 51 is a long screw along the first direction X, and one end is connected to the output shaft of the servo motor 50 via a coupling. The nut bracket 52 holds a nut that screws onto the ball screw 51, and is attached to the surface of the base 30 facing the second cross member 22. One or more brackets 53 are provided, each of which rotatably supports the ball screw 51 and is attached to the surface of the second cross member 22 facing the base 30. As a result, when the servo motor 50 is driven based on a control signal from the control unit, the ball screw 51 rotates, and the moving body 3 moves in the first direction X.

[0026] The blade holder 6 includes a base 60. The base 60 is a block-shaped member, and is disposed so that one end side is located between the base 30 and the second cross member 22 and the other end side is located on the side of the second cross member 22 opposite to the base 30.

[0027] The linear motion mechanism 7 is a linear guide and includes a rail 70 and a block 71. The rail 70 is a long member along the first direction X, and is attached to the surface of the second cross member 22 opposite to the surface facing the base 30. The block 71 is a slider that slides on the rail 70. The block 71 is attached to the surface of the base 60 facing the second cross member 22. This allows each blade holder 6 to move in the first direction X on the second cross member 22 via the linear motion mechanism 7.

[0028] As shown in FIG. 4, the blade-positioning device 1 is movable in the third direction Z on the frame of the slitter via a linear motion mechanism A. The slitter also has a drive unit B. Drive unit B drives the blade-positioning device 1. Drive unit B has an actuator B1. Actuator B1 is, for example, a cylinder with a position detector. Actuator B1 is attached to either the side plate 20 of the base 2 or the frame of the slitter. Head B3 attached to rod B2 of actuator B1 is attached to the other of the side plate 20 of the base 2 or the frame of the slitter. As a result, when drive unit B is driven, blade-positioning device 1 moves in the third direction Z.

[0029] As shown in FIG. 4 and FIG. 5, the blade holder 6 includes a base 60, a blade rest 61, a pressing member 62, a magnet 63, a rotating handle 64, and a scale 65. The blade rest 61 cooperates with the pressing member 62 to clamp the blade 10. The blade rest 61 can be moved in a first direction X by rotating the rotating handle 64. This allows fine adjustment of the position of the blade 10 in the first direction X. The magnet 63 is embedded in the opposing surface of either the blade rest 61 or the pressing member 62, and magnetically attaches the blade 10. This prevents the blade 10 from accidentally falling off during the work of clamping the blade 10. The scale 65 is used to grasp the position of the blade rest 61 relative to the base 60. This allows smooth and easy fine adjustment of the position of the blade 10.

[0030] The first engaging portion 8 includes an actuator 80. The actuator 80 is, for example, an air cylinder. The first engaging portions 8, ... are arranged side by side in the first direction X on the base 30. In this embodiment, the rod 81 of the actuator 80 advances along the second direction Y and advances between the base 30 and the second cross member 22. When the rod 81 advances, the rod 81 engages with the engaged portion 60a of the blade holder 6, and the movable body 3 and the blade holder 6 are engaged. On the other hand, when the rod 81 retreats, the rod 81 moves away from the engaged portion 60a, and the engagement between the movable body 3 and the blade holder 6 is released. The engaged portion 60a is provided in a portion (one end) of the base 60 located between the base 30 and the second cross member 22. The engaged portion 60a is, for example, a hole into which the rod 81 can be inserted.

[0031] The second engaging portion 9 includes an actuator 90. The actuator 90 is, for example, an air cylinder. The multiple second engaging portions 9, ... are arranged on the base 60. In this embodiment, the rod 91 of the actuator 90 advances along a direction perpendicular to the second direction Y toward the second cross member 22. When the rod 91 advances, the rod 91 engages with the engaged portion 22a of the base 2, and the base 2 and the blade holder 6 are engaged. On the other hand, when the rod 91 retracts, the rod 91 moves away from the engaged portion 22a, and the engagement between the base 2 and the blade holder 6 is released. The engaged portion 22a is, for example, the end surface of the second cross member 22 against which the tip of the rod 91 abuts.

[0032] The blade positioning device 1 according to this embodiment has the above configuration. Next, a method for positioning each blade 10 (a method for deploying each blade holder 6) will be described. The slit processing conditions are set as shown in the example of FIG. 2(b).

[0033] 6(a), the moving body 3 is initially stopped at an initial position (the origin of the mechanical coordinate system). In this state, the moving body 3 starts moving in one direction, from one end to the other end in the first direction X.

[0034] As shown in FIG. 6(b), first, when the used blade holder 6A, which is the closest to the initial position among the used blade holders 6, reaches a position corresponding to the slit processing position S1 closest to the initial position, the movable body 3 stops once. In this state, the movable body 3 separates the used blade holder 6A (the rear blade holder 6A in the moving direction of the movable body 3) and the unused blade holder 6B (the front blade holder 6B in the moving direction of the movable body 3) adjacent thereto. The control timing of the first engagement parts 8A, 8B and the second engagement parts 9, 9 when separating them is as shown in FIG. 8(a). The reason why the second engagement part 9 performs engagement before the first engagement part 8 performs disengagement is to prevent the blade holder 6 from moving inadvertently from its set position. The reason for shifting the operation timing between the front blade holder 6 and the rear blade holder 6 is to equalize the amount of air used and stabilize the operation of the air cylinder when the actuators 80, 90 of the engagement parts 8, 9 are air cylinders. Through these steps, the blade 10 held by the blade holder 6A is positioned at the slit processing position S1.

[0035] As shown in FIG. 6(c), the moving body 3 then resumes movement and stops once the used blade holder 6C, which is second closest to the initial position, reaches a position corresponding to the slit processing position S2, which is second closest to the initial position. In this state, the moving body 3 separates the used blade holder 6C. The control timing of the first engagement portion 8C and the second engagement portion 9 when separating is as shown in FIG. 8(a) for "front blade holder". Through these steps, the blade 10 held by the used blade holder 6C is positioned at the slit processing position S2.

[0036] As shown in Fig. 7(a), the moving body 3 then resumes movement and stops once the used blade holder 6D, which is third closest to the initial position, reaches a position corresponding to the slit processing position S3, which is third closest to the initial position. In this state, the moving body 3 separates the used blade holder 6D from the unused blade holder 6E adjacent to it. The control timing of the first engagement parts 8D, 8E and the second engagement parts 9, 9 when separating them is as shown in Fig. 8(a). Through these steps, the blade 10 held by the used blade holder 6D is positioned at the slit processing position S3.

[0037] As shown in Fig. 7(b), the moving body 3 then resumes movement and stops once the used blade holder 6F fourth closest to the initial position reaches a position corresponding to the slit processing position S4 fourth closest to the initial position. In this state, the moving body 3 separates the used blade holder 6F from the unused blade holder 6G adjacent to it. The control timing of the first engagement parts 8F, 8G and the second engagement parts 9, 9 when separating them is as shown in Fig. 8(a). Through these steps, the blade 10 held by the used blade holder 6F is positioned at the slit processing position S4.

[0038] As shown in FIG. 7(c), the moving body 3 then resumes its movement and stops once the used blade holder 6H, which is fifth closest to the initial position, reaches a position corresponding to the slit processing position S5, which is fifth closest to the initial position. In this state, the moving body 3 separates the used blade holder 6H. The control timing of the first engagement portion 8H and the second engagement portion 9 when separating is as shown in FIG. 8(a) for "front blade holder". Through these steps, the blade 10 held by the used blade holder 6H is positioned at the slit processing position S5.

[0039] 7(d), after all of the blade holders 6A-6H have been detached, the movable body 3 finally moves to the other end in the first direction X, completes its one-directional movement, and stops. After all of the blades 10, ... are positioned at the slit processing positions S1-S5 through the above steps, slit processing can begin.

[0040] When the slit processing is completed and the blade positioning device 1 is returned to the initial state, the steps are performed in reverse to those described above. At this time, the step of the movable body 3 holding (re-engaging) one blade holder 6 is as shown in "front blade holder" in FIG. 8(b). Also, the step of the movable body 3 holding (re-engaging) two blade holders 6, 6 (the used blade holder 6 (the front blade holder 6 in the moving direction of the movable body 3) and the adjacent unused blade holder 6 (the rear blade holder 6 in the moving direction of the movable body 3)) is as shown in FIG. 8(b). The reason why the second engagement part 9 performs disengagement after the first engagement part 8 performs engagement is to prevent the blade holder 6 from accidentally moving from its set position. In addition, the operation timing of the front blade holder 6 and the rear blade holder 6 is shifted in order to equalize the amount of air used and stabilize the operation of the air cylinder when the actuators 80, 90 of the engagement parts 8, 9 are air cylinders.

[0041] The slit processing conditions can be set in various patterns. The example shown in Fig. 9(a) is a pattern in which the first, third, fourth, seventh, eighth blade holders 6, ... are set as the used blade holders. In this case, two unused blade holders 6, 6 are interposed between the fourth blade holder 6 and the seventh blade holder 6. Therefore, two unused blade holders 6, 6 are arranged at the position corresponding to the third slit processing position S3.

[0042] 9(b) is a pattern in which the first, second, third, fifth, sixth blade holders 6, ... are set as used blade holders. In this case, the seventh and eighth unused blade holders 6, 6 are further away from the initial position than the used blade holder 6 that is farthest from the initial position, and there is no problem of interference with other blade holders 6 as the moving body 3 moves. Therefore, the two unused blade holders 6, 6 are not detached from the moving body 3 and remain held by the moving body 3.

[0043] The example shown in Fig. 9(c) is a pattern in which all the blade holders 6, ... are set as the blade holders in use. This is the case in which slit processing is performed with the maximum number of divisions.

[0044] As shown in FIG. 10, when the blade positioning device 1 moves linearly in the third direction Z, the blade 10 also moves linearly to approach the continuous sheet D and perform slitting. However, as the slitting continues, the blade edge of the blade 10 gradually wears and loses its sharpness. Therefore, the blade positioning device 1 is moved slightly in the third direction Z at a predetermined timing to shift the contact point of the blade 10. This maintains the sharpness and allows the slitting to be performed stably. The timing may be set by the operator each time, or may be automatically set by the control unit depending on the processing amount. The amount of shift is set to, for example, about 0.5 mm per cycle.

[0045] As described above, according to the blade positioning device 1 of this embodiment, the blade holders 6 are simultaneously transported by the movement of the movable body 3 with the first engagement parts 8, engaged with the movable body 3. Then, during the movement, the corresponding first engagement parts 8 are disengaged, and the corresponding blade holder 6 is separated from the movable body 3 and placed in a predetermined position. In this way, according to the blade positioning device 1 of this embodiment, the blades 10 can be positioned at the slit processing positions S by the movable body 3 moving in one direction only once. Therefore, according to the blade positioning device 1 of this embodiment, the time required to position the blades 10 at the slit processing positions S can be shortened, and thus the preparation time can be shortened and productivity can be improved.

[0046] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

[0047] In the above embodiment, the first engagement portion 8 is provided on the movable body 3, and the second engagement portion 9 is provided on the blade holder 6. However, the present invention is not limited to this. For example, the first engagement portion may be provided on the blade holder, or may be provided across the movable body and the blade holder. The second engagement portion may be provided on the base, or may be provided across the base and the blade holder.

[0048] In the above embodiment, the blade holder to be used is set by the operator. However, the present invention is not limited to this. For example, the blade holder to be used may be automatically set by the control unit based on a predetermined rule.

[0049] In the above embodiment, the unused blade holder 6 is attached to the used blade holder 6 that is closer to the initial position of the two used blade holders 6, 6 on either side of the unused blade holder 6, and is separated from the moving body 3. However, the present invention is not limited to this. For example, as shown in Fig. 11(a), the unused blade holder 6 may be attached to the used blade holder 6 that is farther from the initial position and separated from the moving body 3.

[0050] In the above embodiment, two blades 10 are used to cut off the left and right side portions of the continuous sheet. However, the present invention is not limited to this. For example, as shown in Fig. 11(b) and (c), a product may be manufactured in which the left and right side portions of the continuous sheet are not cut off. [Explanation of symbols]

[0051] A...linear motion mechanism, B...drive unit, B1...actuator, B2...rod, B3...head, C...monitor, 1...blade positioning device, 10...blade, 2...base, 20...side plate, 21...first horizontal member, 22...second horizontal member, 22a...engaged portion, 3...moving body, 30...base, 4...linear motion mechanism, 40...rail, 41...block, 5...drive unit, 50...servo motor, 51...ball screw, 52...nut bracket, 53...bracket, 6,6A to 6H...blade Object holder, 60...base, 60a...engaged portion, 61...tool rest, 62...pressing member, 63...magnet, 64...rotating handle, 65...scale, 7...linear motion mechanism, 70...rail, 71...block, 8,8A-8H...first engaging portion, 80...actuator, 81...rod, 9...second engaging portion, 90...actuator, 91...rod, D...continuous sheet, E...side edge, S,S1-S8...slit processing position, X...first direction, Y...second direction, Z...third direction

Claims

1. With the base, a movable body that is movable on a base in a first direction perpendicular to a feed direction of the continuous sheet; A drive unit that drives the moving body; a plurality of blade holders each capable of holding a blade and each movable in a first direction on the base; a plurality of first engagement portions provided for each blade holder, each of which releasably engages the movable body with the blade holder; A control unit that controls the drive unit and the plurality of first engagement units. Slitter blade positioning device.

2. The blade holder further includes a plurality of second engagement portions provided for each blade holder, each of which releasably engages the base with the blade holder, and each of which is controlled by the control portion.

2. A blade positioning device for a slitter according to claim 1.

3. The control unit controls the first engaging unit and the second engaging unit so that the second engaging unit engages with the blade holder before the first engaging unit disengages the blade holder. The blade positioning device for a slitter according to claim 2.

4. The control unit controls the first engaging unit and the second engaging unit so that the first engaging unit engages with the blade holder and then the second engaging unit disengages the blade holder. The blade positioning device for a slitter according to claim 2 or 3.

5. In the case where some of the blade holders are used for slit processing and the remaining blade holders are not used for slit processing, The control unit synchronously controls the corresponding first engagement units so that when the first engagement unit disengages or engages the blade holder to be used, the first engagement unit also disengages or engages the adjacent blade holder not to be used. The blade positioning device for a slitter according to any one of claims 1 to 4.

6. The blade holder to be used is further provided with a setting unit for setting the blade holder to be used. The blade positioning device for a slitter according to claim 5.

Images