Slitter, unit for cutting device, and cutting device

Abstract

A slitter according to one non-limiting aspect of the present disclosure has a cylindrical holder extending along a rotation axis, and an annular cutting blade member attached to the holder. The holder has a cylindrical first portion extending along the rotation axis, and a cylindrical second portion inserted into the first portion. The cutting blade member is positioned between the first portion and the second portion in the holder. The holder further includes an adjustment portion with which it is possible to adjust, in stages, the interval between the cutting blade member and the second portion in the direction along the rotation axis. The first portion has a display part for indicating the interval between the cutting blade member and the second portion.

Description

Slitter, cutting device unit, and cutting device CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Japanese Patent Application No. 2024-151855, filed on September 4, 2024, the entire disclosure of which is incorporated herein by reference.

[0002] The present disclosure relates to a cutting device for cutting sheet-like materials to a predetermined width, a unit used in the cutting device, and a slitter used in the unit. Note that the term "slitter" does not refer to the entire cutting device or the slitting process itself. The slitter may also be called a slitter holder. Examples of sheet-like materials include metal foil, paper, and resin film.

[0003] Known examples of cutting devices for cutting sheet-like materials include slitters described in Japanese Patent Application Laid-Open No. 2014-012327 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2020-066088 (Patent Document 2). The slitters described in these documents have a circular rotary blade and a holder that holds the rotary blade. Here, the slitter described in these documents allows fine adjustment of the position of the rotary blade in a direction along the rotation axis by rotating a ring member that constitutes the holder.

[0004] In the slitter described in Patent Documents 1 and 2, it was difficult to determine the adjustment state of the rotary blade position in the direction along the rotation axis. As a result, there was a risk of misrecognition of the adjustment state. Therefore, there was a need for a slitter that could easily determine the adjustment state of the rotary blade position.

[0005] A slitter, not limited to this disclosure, comprises a cylindrical holder extending along a rotation axis and an annular cutting edge member attached to the holder. The holder has a first cylindrical portion extending along the rotation axis and a second cylindrical portion inserted into the first portion. The cutting edge member is located between the first and second portions of the holder. The holder further has an adjustment portion that allows for stepwise adjustment of the distance between the cutting edge member and the second portion in the direction along the rotation axis. The first portion has an indicator portion that shows the distance between the cutting edge member and the second portion.

[0006] This is a perspective view showing a one-sided slitter not limited to the present disclosure. This is a front view of the slitter shown in Figure 1, viewed from a direction perpendicular to the axis of rotation. This is the same front view as in Figure 2. This is a cross-sectional view of section IV in the slitter shown in Figure 3. This is an exploded front view of the slitter shown in Figure 2. This is a front view of the second member and the first elastic member in the slitter shown in Figure 5. This is a side view of the slitter shown in Figure 3, viewed from direction VII. This is a side view of the slitter shown in Figure 3, viewed from direction VIII. This is an exploded perspective view of the slitter shown in Figure 1. This is a schematic diagram showing the relationship between the width of the tapered region of the groove and the width of the positioning member in the slitter shown in Figure 1. This is a schematic diagram showing the adjustment state in the slitter shown in Figure 1. This is a front view of the second member and the first elastic member in a one-sided slitter not limited to the present disclosure, corresponding to Figure 6. This is a schematic diagram showing the shape of the groove in a one-sided slitter not limited to the present disclosure. This is a schematic diagram showing the shape of the groove in a one-sided slitter not limited to the present disclosure. This is a perspective view showing a unit for a one-sided cutting device not limited to the present disclosure. This is a schematic diagram showing a one-sided cutting device not limited to the present disclosure.

[0007] <Slitter> A non-limiting aspect of the slitter 1 of the present disclosure will be described in detail below with reference to the drawings. However, for the sake of convenience, the figures referenced below show only the main components necessary for explaining the embodiment in a simplified form. Therefore, the slitter 1 may include optional components not shown in the figures referenced. Furthermore, the dimensions of the components in the figures do not faithfully represent the actual dimensions of the components or the dimensional ratios of each component. Note that, for ease of visual understanding, certain parts of the slitter 1 are surrounded by dashed lines in FIG. 5.

[0008] In one example, not limited to those shown in Figures 1 to 11, the slitter 1 is rotatable around the rotation axis O1. The slitter 1 may also have a holder 3 and a cutting edge member 5.

[0009] The holder 3 can function as a member for fixing the cutting edge member 5 to the shaft member, which will be described later. The holder 3 may be a cylindrical member extending along the rotation axis O1. The cylindrical shape does not need to be strictly cylindrical; it just needs to be roughly cylindrical.

[0010] The cutting blade member 5 may be attached to the holder 3. The cutting blade member 5 may be detachably attached to the holder 3. The cutting blade member 5 may also be a ring-shaped member. The cutting blade member 5 may also be a disk-shaped or dish-shaped member. The cutting blade member 5 may also be called a circular blade. The cutting blade member 5 may also be called a rotary blade.

[0011] The holder 3 may have a first portion 7 and a second portion 9, as shown in the example (not limited to) in Figures 5 and 9. The first portion 7 may be a cylindrical portion extending along the rotation axis O1. The second portion 9 may be a cylindrical portion inserted into the first portion 7.

[0012] The cutting blade member 5 may be located between the first portion 7 and the second portion 9 of the holder 3 .

[0013] Here, the holder 3 may further have an adjustment portion 11, as in a non-limiting example shown in Fig. 5. The adjustment portion 11 may be a portion that can adjust in stages the distance between the cutting blade member 5 and the second portion 9 in the direction Y1 along the rotation axis O1. Furthermore, the first portion 7 may have a display unit 13. The display unit 13 may be a portion that indicates the distance between the cutting blade member 5 and the second portion 9.

[0014] When the holder 3 has the adjustment portion 11, the position of the cutting blade member 5 (rotary blade) in the direction Y1 along the rotation axis O1 can be adjusted. Furthermore, when the first portion 7 has the display portion 13, the adjustment state of the position of the cutting blade member 5 (rotary blade) can be easily determined.

[0015] 5 and 9 , the first portion 7 may further include a groove 15. The groove 15 may be open on the outer circumferential surface and the inner circumferential surface of the first portion 7. The groove 15 may also extend along the circumferential direction Y2 of the rotation axis O1.

[0016] 5, the groove 15 may have a positioning surface 17. The positioning surface 17 may be a surface extending in the circumferential direction Y2 of the rotation axis O1.

[0017] The positioning surface 17 may have an inclined region 19. The inclined region 19 may be a region whose position in the direction Y1 along the rotation axis O1 changes stepwise along the circumferential direction Y2.

[0018] 2 and 6 , the inclined region 19 has one end 19a in the circumferential direction Y2 that is closest to the cutting blade member 5 in the direction Y1 along the rotation axis O1. The other end 19b in the circumferential direction Y2 is farthest from the cutting blade member 5 in the direction Y1 along the rotation axis O1. From the one end 19a to the other end 19b, the position of the inclined region 19 in the direction Y1 along the rotation axis O1 gradually moves away from the cutting blade member 5.

[0019] The holder 3 may further include a positioning member 21, as in a non-limiting example shown in Figures 5 and 9. The positioning member 21 may be a member that abuts against the first portion 7 and the positioning surface 17, as in a non-limiting example shown in Figures 2 to 4.

[0020] The position of the cutting blade member 5 in the direction Y1 along the rotation axis O1 may be specified by fixing the positioning member 21 to the first portion 7 and abutting against the inclined region 19 on the positioning surface 17. Alternatively, the adjustment portion 11 may be configured by the positioning member 21 and the inclined region 19 (see FIG. 5 ). In these cases, a clicking sensation is likely to be felt when the positioning member 21 passes through the inclined region 19 and abuts against a region other than the inclined region 19 on the positioning surface 17, or when the positioning member 21 passes through the inclined region 19 and moves to the next inclined region 19. Therefore, the adjustment state of the position of the cutting blade member 5 can be determined to some extent by the clicking sensation.

[0021] The positioning member 21 may be fixed to the first portion 7 by being inserted into a hole that opens in the outer peripheral surface of the first portion 7 (see FIG. 4). The positioning member 21 may be removably fixed to the first portion 7. That is, the positioning member 21 may be detached from the first portion 7 when the slitter 1 is in use. The positioning member 21 may also be a rod-shaped member. Examples of the positioning member 21 include a pin.

[0022] The first section 7 may further include a first member 23, a second member 25, and a first elastic member 27, as shown in a non-limiting example in FIG.

[0023] The first member 23 may be a cylindrical member fixed to the second part 9. The first member 23 may be fixed to the second part 9 using, for example, a screw or the like.

[0024] The second member 25 may be a cylindrical member located closer to the cutting blade member 5 than the first member 23. The second member 25 is movable in a direction Y1 along the rotation axis O1 relative to the first member 23, and is rotatable around the rotation axis O1. Furthermore, the second member 25 can be rotated around the rotation axis O1 to position the adjustment portion 11. The second member 25 may abut against the cutting blade member 5.

[0025] The first elastic member 27 may be located between the first member 23 and the second member 25. The first elastic member 27 may be, for example, a disc spring. The first elastic member 27 may be made of, for example, stainless steel or spring steel. The first elastic member 27 may be in contact with each of the first member 23 and the second member 25. The first elastic member 27 may also be attached to the second member 25 using, for example, an adhesive.

[0026] The positioning surface 17 may be located on the second member 25, as shown in the example (not limited to) in Figures 5 and 6. In other words, the groove 15 may be located on the second member 25. The positioning surface 17 may also face forward relative to the cutting edge member 5.

[0027] 2 , when the first elastic member 27 is positioned between the first member 23 and the second member 25, it is possible to elastically deform the first elastic member 27 in the direction Y1 along the rotation axis O1, and apply a biasing force F1 to the second member 25 toward the cutting blade member 5. Furthermore, when the positioning surface 17 is positioned on the second member 25 and faces the front relative to the cutting blade member 5, the positioning member 21 is likely to come into contact with the inclined region 19 when the biasing force F1 is applied from the first elastic member 27 and the second member 25 moves toward the cutting blade member 5.

[0028] When the second member 25 is rotated around the rotation axis O1 and the positioning member 21 abuts against one end 19 a of the inclined region 19, the amount of movement of the second member 25 by the first elastic member 27 is smallest. In other words, the distance between the cutting blade member 5 and the second portion 9 in the direction Y1 along the rotation axis O1 is largest.

[0029] Furthermore, when the positioning member 21 contacts the other end 19b of the inclined region 19, the amount of movement of the second member 25 by the first elastic member 27 is greatest. In other words, the distance between the cutting edge member 5 and the second portion 9 in the direction Y1 along the rotation axis O1 becomes the smallest.

[0030] The display unit 13 may be located on the first member 23, as shown in the example shown in Figure 5, which is not limited to this designation. More specifically, the display unit 13 may be located on the outer circumferential surface of the first member 23. In this case, the display unit 13 is easily visible.

[0031] It is desirable to provide the display unit 13 in a position that is easily visible to the operator. Therefore, the display unit 13 may be located away from the inclined region 19 in the circumferential direction Y2, as in a non-limiting example shown in Fig. 2. Furthermore, when the outer peripheral surface of the first member 23 is covered with a blade cover, the display unit 13 may be located on the outer peripheral edge of the end face of the first member 23 (the surface viewed from the front in Fig. 7).

[0032] The display unit 13 may have a plurality of recesses 29 aligned in the circumferential direction Y2. The recesses 29 may function as markers indicating the distance between the cutting blade member 5 and the second portion 9. The display unit 13 may have protrusions instead of the recesses 29. That is, the display unit 13 may have a plurality of recesses 29 and / or protrusions aligned in the circumferential direction Y2.

[0033] The display unit 13 may also have a band-shaped portion 31 whose width in the direction Y1 along the rotation axis O1 decreases from one end in the circumferential direction Y2 to the other end in the circumferential direction Y2. This portion 31 can also function as a marker indicating the distance between the cutting blade member 5 and the second portion 9.

[0034] The second member 25 may have a mark M1 corresponding to the display unit 13, as shown in the example shown in Figure 2 (not limited to this example). The mark M1 may be located on the outer circumferential surface of the second member 25.

[0035] The inclined region 19 may have a plurality of grooves 33, as shown in non-limiting examples in FIGS. 2 and 6 . The plurality of grooves 33 may be aligned in the circumferential direction Y2. Each of the plurality of grooves 33 may open toward the cutting blade member 5. The number of grooves 33 may be 2 to 30. When the inclined region 19 has the plurality of grooves 33 described above, the positioning member 21 is likely to be stably positioned in the grooves 33. Therefore, it is likely to prevent the second member 25 from being misaligned in the circumferential direction Y2 when the slitter 1 is in use.

[0036] The positions of the multiple grooves 33 may change in steps along the direction Y1 parallel to the rotation axis O1. For example, the position of the bottom 35 of the multiple grooves 33 may change in steps. The bottom 35 may be the part of the groove 33 furthest from the cutting edge member 5.

[0037] 2 and 6 , in the recessed groove 33 located at one end 19 a of the inclined region 19 in the circumferential direction Y2, the position of the bottom 35 is closest to the cutting blade member 5. In addition, in the recessed groove 33 located at the other end 19 b of the inclined region 19 in the circumferential direction Y2, the position of the bottom 35 is farthest from the cutting blade member 5. The position of the bottom 35 is gradually separated from the cutting blade member 5 from the recessed groove 33 located at one end 19 a to the recessed groove 33 located at the other end 19 b.

[0038] Each of the plurality of recessed grooves 33 may have a tapered region 37 (see FIG. 10 ). The tapered region 37 may be a region in which the width W37 in the circumferential direction Y2 narrows from the opening 39 toward the bottom 35 of the recessed groove 33. In this case, the positioning member 21 is easily accommodated in the recessed groove 33. Also, operability when moving the positioning member 21 in the circumferential direction Y2 is easily improved.

[0039] The maximum value of the width W37 of the tapered region 37 in the circumferential direction Y2 may be larger than the width W21 of the positioning member 21 in the circumferential direction Y2. Also, the minimum value of the width W37 of the tapered region 37 in the circumferential direction Y2 may be smaller than the width W21 of the positioning member 21 in the circumferential direction Y2. In these cases, the axial adjustment distance and spacing can be determined by changing the ratio pattern, and it is also possible to customize specifications to meet the user's needs.

[0040] The width W37 of the tapered region 37 in the circumferential direction Y2 and the width W21 of the positioning member 21 in the circumferential direction Y2 are not limited to specific values. For example, the width W37 of the tapered region 37 in the circumferential direction Y2 may be set to 0.5 to 20 mm. Furthermore, the width W21 of the positioning member 21 in the circumferential direction Y2 may be set to 1 to 4 mm. The width W21 of the positioning member 21 in the circumferential direction Y2 may be evaluated as a maximum value.

[0041] 5 and 9 , the second portion 9 may include a cylindrical third member 41 that fixes the first member 23, and a second elastic member 43 that is positioned closer to the cutting blade member 5 than the third member 41. In this case, the second elastic member 43 can be elastically deformed in the direction Y1 along the rotation axis O1 to apply a biasing force F2 to the cutting blade member 5 toward the first portion 7 (see FIG. 2 ). This makes it easier to stably attach the cutting blade member 5 to the holder 3.

[0042] The second elastic member 43 may be, for example, an O-ring. The material of the second elastic member 43 may be, for example, rubber. The second elastic member 43 may come into contact with the cutting edge member 5.

[0043] The biasing force F1 due to the first elastic member 27 may be referred to as the first biasing force F1, and the biasing force F2 due to the second elastic member 43 may be referred to as the second biasing force F2. The second biasing force F2 may be smaller than the first biasing force F1.

[0044] The second member 25 may have an operating hole 45 opening on its outer circumferential surface, as shown in the example (not limited to) in Figure 11. The operating hole 45 can function for positioning the adjustment part 11. That is, by inserting the tip of a rod-shaped jig 101 into the operating hole 45 and rotating the second member 25 around the rotation axis O1, the operator can safely position the adjustment part 11. The jig 101 may be, for example, a screwdriver.

[0045] Examples of materials for the first member 23, second member 25, and third member 41 in the holder 3 include stainless steel, cemented carbide, resin, ceramics, and DLC (Diamond-like Carbon). Examples of materials for the cutting edge member 5 include high-speed steel, cemented carbide, copper, steel, stainless steel, and aluminum.

[0046] Next, a slitter 1A, which is not limited to this disclosure, will be described with reference to the drawings. In the following, the differences between slitter 1A and slitter 1 will be mainly described, and detailed explanations of aspects that have the same configuration as slitter 1 may be omitted. Therefore, the description of slitter 1 may be used to understand the configuration of slitter 1A. This also applies to slitters 1B and 1C, which will be described later.

[0047] In the slitter 1A, as shown in the example shown in Figure 12, the first portion 7 may have a notch 47 instead of the groove 15 in the slitter 1 described above. More specifically, the first portion 7 may have a notch 47 that opens on the side of the cutting edge member 5. Furthermore, this notch 47 may have a positioning surface 17. In these cases, since the first portion 7 is open due to the notch 47, it becomes possible to easily manufacture the positioning surface 17. Also, when using the slitter 1A, the positioning member 21 can be easily removed from the first member 7.

[0048] Next, a non-limiting example of yet another slitter 1B of the present disclosure will be described with reference to the drawings.

[0049] In the slitter 1B, the multiple grooves 33 may each be V-shaped, as shown in the example (not limited to) in Figure 13. In this case, the positioning member 21 is more likely to be positioned away from the bottom 35. Therefore, the position of the positioning member 21 is more likely to be stable when it is housed in the grooves 33.

[0050] Next, a slitter 1C, which is not limited to this disclosure, will be described with reference to the drawings.

[0051] In the slitter 1C, the multiple grooves 33 may each be R-shaped (arc-shaped), as shown in the example shown in Figure 14. In this case, as in the embodiment shown in Figure 10, the operation of moving the positioning member 21 from one of the multiple grooves 33 to another becomes easier. In other words, the tapered region 37 is not limited to a form shown as a straight line in a cross-sectional view as shown in Figure 10, but may also be a form shown as a concave curve.

[0052] Furthermore, if multiple grooves 33 are R-shaped, the concentration of load on specific parts of the grooves 33 can be avoided when fixing the positioning member 21 to the grooves 33. Therefore, the durability of the grooves 33 is easily improved. Also, if multiple grooves 33 are each R-shaped, the structure of the grooves 33 becomes relatively simple, making it possible to manufacture the grooves 33 more easily.

[0053] <Unit for Cutting Device> Next, a cutting device unit 201 (hereinafter sometimes referred to as "unit 201"), which is not limited to this disclosure, will be described with reference to the drawings, using the case in which the above-described slitter 1 is included as an example.

[0054] Unit 201 may have a slitter 1, a shaft member 203, and a rotating mechanism 205, as shown in the example (not limited to) in Figure 15. When unit 201 has a slitter 1, cutting defects are less likely to occur. Unit 201 may have multiple slitters 1. The number of slitters 1 may be 1 to 30.

[0055] The shaft member 203 may be a member through which the slitter 1 is inserted. The shaft member 203 may extend along the rotation axis O1. The shaft member 203 is rotatable around the rotation axis O1.

[0056] The shaft member 203 is not limited to a specific size. For example, the length of the shaft member 203 in the direction along the rotation axis O1 may be set to approximately 300 to 4000 mm. Furthermore, the width (diameter) of the shaft member 203 in the direction perpendicular to the rotation axis O1 may be set to approximately 30 to 150 mm. The cross section of the shaft member 203 perpendicular to the rotation axis O1 may be circular.

[0057] The holder 3 in the slitter 1 may be attached to the shaft member 203. The holder 3 may be detachably attached to the shaft member 203. When the holder 3 is attached to the shaft member 203, the cutting blade member 5 can be fixed to the shaft member 203 via the holder 3. Therefore, when the shaft member 203 rotates, the cutting blade member 5 can also rotate in accordance with the rotation of the shaft member 203.

[0058] The rotation mechanism 205 may be a mechanism that rotates the shaft member 203. The rotation mechanism 205 may be attached to both ends of the shaft member 203. The rotation mechanism 205 may also be referred to as a bearing member. An example of the rotation mechanism 205 may be a ring-shaped bearing. This bearing is not limited to a specific size. For example, the outer diameter of the bearing may be set to about 30 to 150 mm.

[0059] The unit 201 may further include a base 207. The shaft member 203 may be attached to the base 207. The shaft member 203 may be detachably attached to the base 207.

[0060] The base 207 may have a lower plate 209 and a pair of side walls 211 fixed to the lower plate 209 with their main surfaces facing each other. The lower plate 209 may have a rectangular upper surface 213. The pair of side walls 211 may be fixed to the lower plate 209 along the short sides of the upper surface 213. The shaft member 203 may be positioned parallel to the upper surface 213 of the lower plate 209. "Parallel" does not have to be strictly parallel, and may mean that an inclination of about ±5° is allowed.

[0061] The size of the lower plate portion 209 is not limited to a specific size. For example, in the non-limiting example shown in FIG. 15 , the width of the lower plate portion 209 in the x-axis direction may be set to approximately 400 to 5000 mm. The width of the lower plate portion 209 in the y-axis direction may be set to approximately 100 to 500 mm. The width (thickness) of the lower plate portion 209 in the z-axis direction may be set to approximately 20 to 100 mm.

[0062] The pair of side wall portions 211 is not limited to a specific size. For example, the width (thickness) of the side wall portions 211 in the x-axis direction may be set to approximately 10 to 60 mm. The width of the side wall portions 211 in the y-axis direction may be set to approximately 100 to 500 mm. The width of the side wall portions 211 in the z-axis direction may be set to approximately 200 to 800 mm.

[0063] 15, the direction parallel to the rotation axis O1 may be the x-axis direction. Also, the direction perpendicular to the x-axis direction and parallel to the upper surface 213 of the lower plate portion 209 may be the y-axis direction. The vertical direction in FIG. 15, which is perpendicular to the x-axis and y-axis directions, may be the z-axis direction.

[0064] The base 207 may have any configuration as long as it has sufficient strength to stably hold the shaft member 203. Therefore, the base 207 is not limited to a configuration formed by the lower plate portion 209 and the pair of side wall portions 211. For example, the base 207 may have a concave configuration in which the lower plate portion 209 and the pair of side wall portions 211 are integrally formed. Examples of materials for the base 207 include steel and stainless steel.

[0065] The pair of side wall portions 211 may each have a support portion 215 that is independent of each other. The support portion 215 is capable of attaching the shaft member 203. The shaft member 203 may be attached to the support portion 215 by holding the above-described rotation mechanism 205 with the support portion 215. In these cases, the shaft member 203 can be easily rotated while being stably held by the support portion 215.

[0066] The unit 201 may further include a shaft member 217 extending along a rotation axis O2 parallel to the rotation axis O1. In this case, the rotation axis O1 may be referred to as the first rotation axis O1, and the rotation axis O2 may be referred to as the second rotation axis O2. Furthermore, the shaft member 203 may be referred to as the first shaft member 203, and the shaft member 217 may be referred to as the second shaft member 217.

[0067] The second shaft member 217 may be attached to the base 207. The second shaft member 217 may be detachably attached to the base 207. The second shaft member 217 is rotatable around a second rotation axis O2.

[0068] The second shaft member 217 may be located below the first shaft member 203. Furthermore, the second shaft member 217 is rotatable in the opposite direction to the first shaft member 203. For example, if meshing gears are attached to the first shaft member 203 and the second shaft member 217, when the first shaft member 203 rotates, the second shaft member 217 can rotate in the opposite direction to the first shaft member 203 in accordance with the rotation of the first shaft member 203.

[0069] The second rotation axis O2 may be parallel to the first rotation axis O1. The second rotation axis O2 may overlap the first rotation axis O1 when the unit 201 is viewed in plan from the side of the first shaft member 203. The second shaft member 217 may be positioned parallel to the upper surface 213 of the lower plate portion 209.

[0070] The second shaft member 217 is not limited to a specific size. For example, the length of the second shaft member 217 in the direction along the second rotation axis O2 may be set to approximately 300 to 4000 mm. Furthermore, the width (diameter) of the second shaft member 217 in the direction perpendicular to the second rotation axis O2 may be set to approximately 30 to 150 mm. The cross section of the second shaft member 217 perpendicular to the second rotation axis O2 may be circular.

[0071] The pair of side wall portions 211 may each have a support portion 219 that is independent of each other. In this case, the support portion 215 may be referred to as a first support portion 215, and the support portion 219 may be referred to as a second support portion 219.

[0072] The second support portion 219 may be located below the first support portion 215. The second support portion 219 is capable of attaching a second shaft member 217. The unit 201 may further include a rotation mechanism 221 attached to both ends of the second shaft member 217. In this case, the rotation mechanism 205 may be referred to as the first rotation mechanism 205, and the rotation mechanism 221 may be referred to as the second rotation mechanism 221.

[0073] The second shaft member 217 may be attached to the second support portion 219 by holding the second rotation mechanism 221 by the second support portion 219. In these cases, the second shaft member 217 can be easily rotated while being stably held by the second support portion 219.

[0074] The second rotation mechanism 221 may be, for example, a ring-shaped bearing. The size of this bearing is not limited to a specific size. For example, the outer diameter of the bearing may be set to approximately 30 to 150 mm.

[0075] The unit 201 may further include a cutting blade member 223. In this case, the cutting blade member 5 may be referred to as a first cutting blade member 5, and the cutting blade member 223 may be referred to as a second cutting blade member 223.

[0076] The second cutting blade member 223 may be cylindrical. The second cutting blade member 223 may be attached to the second shaft member 217. The second cutting blade member 223 may be detachably attached to the second shaft member 217. When the second cutting blade member 223 is attached to the second shaft member 217, the second cutting blade member 223 can also rotate in accordance with the rotation of the second shaft member 217. The unit 201 may have a plurality of second cutting blade members 223. The number of second cutting blade members 223 may be 1 to 30.

[0077] The second cutting blade member 223 may be attached to the second shaft member 217 so that the side surface of the second cutting blade member 223 contacts the side surface of the first cutting blade member 5. In this case, the side surface of the first cutting blade member 5, which is relatively susceptible to elastic deformation, and the side surface of the second cutting blade member 223, which is relatively less susceptible to elastic deformation, come into contact with each other, which can generate a shear force between the first cutting blade member 5 and the second cutting blade member 223. This shear force can then be used to cut the sheet-like material. Therefore, a relatively wide sheet-like material fed to the unit 201 can be cut by the first cutting blade member 5 and the second cutting blade member 223 into relatively narrow sheet products (sheet fragments).

[0078] 15, unit 201 includes slitter 1, but is not limited to this. For example, unit 201 may include slitter 1A, slitter 1B, or slitter 1C.

[0079] <Cutting Device> Next, a non-limiting example of the cutting device 301 of the present disclosure will be described in detail with reference to the drawings, taking as an example a case where the cutting device 301 has the above-described unit 201.

[0080] 16, the cutting device 301 may include a unit 201, a first roll 303, and a second roll 305. When the cutting device 301 includes the unit 201, poor cutting is less likely to occur.

[0081] The first roll 303 may have the sheet-like member 401 wound around it, or may feed the sheet-like member 401 to the unit 201. The first roll 303 may function as a supply mechanism that supplies the sheet-like member 401 to the unit 201. When the cutting device 301 is used, the sheet-like member 401 wound around the first roll 303 may be fed to the unit 201 by rotating the first roll 303.

[0082] The second roll 305 may wind up the sheet-like material 401 cut by the unit 201. The second roll 305 can function as a winding mechanism for winding up the sheet-like material 401 cut by the unit 201.

[0083] The number of second rolls 305 may be one or more. When there is one second roll 305, the sheet-like members 401 cut and individualized by the unit 201 may be collectively wound around the single second roll 305. When there are multiple second rolls 305, the sheet-like members 401 cut and individualized by the unit 201 may be wound around the multiple second rolls 305, respectively. The sheet-like members 401 cut and individualized by the unit 201 may also be referred to as sheet fragments 403.

[0084] The cutting device 301 may further include a first guide roll 307 located between the unit 201 and the first roll 303. In this case, the sheet-like member 401 can be supplied from the first roll 303 to the unit 201 through the first guide roll 307, which makes it easier to stabilize the supply state of the sheet-like member 401. The first guide roll 307 may be configured as a single roll or may be configured as a plurality of rolls.

[0085] The cutting device 301 may further include a second guide roll 309 located between the unit 201 and the second roll 305. In this case, the sheet fragments 403 can be transported from the unit 201 to the second roll 305 through the second guide roll 309, which helps to stabilize the transport state of the sheet fragments 403. The second guide roll 309 may consist of one roll or multiple rolls.

[0086] <Method for Manufacturing Sheet Fragment> Next, a non-limiting method for manufacturing one surface of the sheet fragment 403 according to the present disclosure will be described in detail with reference to the drawings, taking as an example a case where the above-described unit 201 is used.

[0087] The sheet fragment 403 may be made by cutting a sheet-like member 401, as shown in the example not limited to the one shown in Figure 16. The method for manufacturing the sheet fragment 403 may include the following steps: (1) inserting the sheet-like member 401 between the first cutting blade member 5 and the second cutting blade member 223 in the unit 201 of the cutting device 301; and (2) cutting the sheet-like member 401 with the first cutting blade member 5 and the second cutting blade member 223.

[0088] In the manufacturing method of the sheet fragment 403, when the unit 201 is used, cutting defects are less likely to occur.

[0089] Examples of sheet-like members 401 include metal foil, paper, and resin film.

[0090] The above provides examples of the slitter 1, 1A, 1B, 1C, cutting device unit 201, and cutting device 301 of one aspect of the present disclosure, but it goes without saying that the present disclosure is not limited to the above embodiments and can be any as long as it does not deviate from the gist of the present disclosure.

[0091] For example, the slitter 1, 1A, 1B, 1C, the cutting device unit 201, and the cutting device 301 may have the following configuration: [1] The slitter has a cylindrical holder extending along a rotation axis and an annular cutting blade member attached to the holder, the holder has a cylindrical first portion extending along the rotation axis and a cylindrical second portion inserted into the first portion, the cutting blade member is located between the first portion and the second portion of the holder, the holder further has an adjustment portion that can adjust in stages the distance between the cutting blade member and the second portion in a direction along the rotation axis, and the first portion has an indicator that indicates the distance between the cutting blade member and the second portion. [2] In the slitter of [1] above, the first portion may further have a groove or notch with a positioning surface extending circumferentially around the rotation shaft, the positioning surface having an inclined region whose position in a direction along the rotation shaft changes stepwise along the circumferential direction, the holder may further have a positioning member abutting the first portion and the positioning surface, the positioning member being fixed to the first portion and abutting the inclined region of the positioning surface to specify the position of the cutting blade member in the direction along the rotation shaft, and the adjustment portion may be constituted by the positioning member and the inclined region. [3] In the slitter of [2] above, the first portion may further have a cylindrical first member fixed to the second portion, a cylindrical second member positioned closer to the cutting blade member than the first member, and a first elastic member positioned between the first member and the second member, and the positioning surface may be located on the second member and facing forward relative to the cutting blade member. [4] In the slitter of [3] above, the display portion may be located on the first member. [5] In the slitter of [3] or [4] above, the display portion may be located away from the inclined region in the circumferential direction. [6] In any one of the slitters of [2] to [5] above, the inclined regions may be located side by side in the circumferential direction and may have a plurality of recessed grooves whose positions in the direction along the rotation axis change stepwise.[7] The slitter according to [6] above may have a tapered region in which each of the plurality of grooves narrows in the circumferential direction from the opening toward the bottom. [8] The slitter according to [7] above may have a V-shape in which each of the plurality of grooves. [9] The slitter according to [7] above may have a maximum value of the circumferential width of the tapered region greater than the circumferential width of the positioning member, and a minimum value of the circumferential width of the tapered region smaller than the circumferential width of the positioning member.

[10] The cutting device unit may have any one of the slitters according to [1] to [9] above, a shaft member through which the slitter is inserted, and a rotation mechanism for the shaft member.

[11] The cutting device may have the cutting device unit according to

[10] above, a first roll on which a sheet-like member is wound and which feeds the sheet-like member to the cutting device unit, and a second roll which winds up the sheet-like member cut by the cutting device unit.

[0092] DESCRIPTION OF SYMBOLS 1 slitter 1A slitter 1B slitter 1C slitter 3 holder 5 cutting blade member (first cutting blade member) 7 first portion 9 second portion 11 adjustment portion 13 display portion 15 groove 17 positioning surface 19 inclined region 19a end portion 19b end portion 21 positioning member 23 first member 25 second member 27 first elastic member 29 recess 31 band-shaped portion 33 recessed groove 35 bottom portion 37 tapered region 39 opening 41 third member 43 second elastic member 45 operation hole 47 notch 101 jig 201 cutting device unit (unit) 203 shaft member (first shaft member) 205 rotation mechanism (first rotation mechanism) 207 base DESCRIPTION OF SYMBOLS 209: Lower plate portion 211: Side wall portion 213: Upper surface 215: Support portion (first support portion) 217: Shaft member (second shaft member) 219: Support portion (second support portion) 221: Rotation mechanism (second rotation mechanism) 223: Cutting blade member (second cutting blade member) 301: Cutting device 303: First roll 305: Second roll 307: First guide roll 309: Second guide roll 401: Sheet-like member 403: Sheet fragment O1: Rotation shaft (first rotation shaft) O2: Rotation shaft (second rotation shaft) Y1: Direction along the rotation shaft Y2: Circumferential direction of the rotation shaft F1: Urging force (first urging force) F2: Urging force (second urging force) M1: Mark

Claims

1. A slitter having a cylindrical holder extending along a rotation axis and an annular cutting blade member attached to the holder, wherein the holder has a cylindrical first portion extending along the rotation axis and a cylindrical second portion inserted into the first portion, the cutting blade member is located between the first portion and the second portion of the holder, the holder further has an adjustment portion that can adjust in stages the distance between the cutting blade member and the second portion in a direction along the rotation axis, and the first portion has an indicator that shows the distance between the cutting blade member and the second portion.

2. A slitter as described in claim 1, wherein the first portion further has a groove or notch with a positioning surface extending circumferentially around the rotating shaft, the positioning surface having an inclined region whose position in a direction along the rotating shaft changes stepwise along the circumferential direction, the holder further has a positioning member that abuts the first portion and the positioning surface, the positioning member is fixed to the first portion and abuts the inclined region on the positioning surface, thereby specifying the position of the cutting blade member in a direction along the rotating shaft, and the adjustment portion is constituted by the positioning member and the inclined region.

3. A slitter as described in claim 2, wherein the first portion further comprises: a cylindrical first member fixed to the second portion; a cylindrical second member located closer to the cutting blade member than the first member; and a first elastic member located between the first member and the second member, and the positioning surface is located on the second member and faces forward relative to the cutting blade member.

4. The slitter according to claim 3, wherein the indicia is located on the first member.

5. The slitter according to claim 3 or 4, wherein the indicia are positioned away from the inclined region in the circumferential direction.

6. A slitter according to any one of claims 2 to 5, wherein the inclined region has a plurality of grooves arranged side by side in the circumferential direction and whose positions in the direction along the rotation axis change in stages.

7. The slitter according to claim 6, wherein each of the plurality of grooves has a tapered region in which the width in the circumferential direction narrows from the opening to the bottom.

8. The slitter according to claim 7, wherein each of the plurality of grooves is V-shaped.

9. A slitter as described in claim 7, wherein the maximum value of the width of the tapered region in the circumferential direction is greater than the width of the positioning member in the circumferential direction, and the minimum value of the width of the tapered region in the circumferential direction is smaller than the width of the positioning member in the circumferential direction.

10. A cutting device unit comprising: a slitter according to any one of claims 1 to 9; a shaft member through which the slitter is inserted; and a rotation mechanism for the shaft member.

11. A cutting device comprising: a cutting device unit according to claim 10; a first roll around which a sheet-like material is wound and which feeds the sheet-like material to the cutting device unit; and a second roll which takes up the sheet-like material cut by the cutting device unit.

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