Unit for cutting device, cutting device, and method for manufacturing sheet fragments

Abstract

In a cutting device unit according to one not-limited aspect of the present disclosure, a second shaft member, a first cutting edge member, and a second cutting edge member are each conductive. A detection means includes: a power source; a connection terminal attached to a holder; a light emitting member attached to the holder; first wiring electrically connecting the connection terminal and the power source; second wiring electrically connecting the second shaft member and the power source; third wiring electrically connecting the light emitting member and the connection terminal; and fourth wiring electrically connecting the light emitting member and the first cutting edge member.

Description

Cross-reference to Related Applications

[0001] This application claims the priority of Japanese Patent Application No. 2022-153604 filed on September 27, 2022, and incorporates the entire disclosure of the previous application herein for reference purposes.

Technical Field

[0002] The present disclosure relates to a unit used in a cutting device for cutting a sheet-like member into a predetermined width, a cutting device, and a method for manufacturing a sheet fragment. Examples of the sheet-like member may include members such as metal foil, paper, and resin film.

Background Art

[0003] As a cutting device for cutting a sheet-like member, for example, a slitter device described in Japanese Patent Application Laid-Open No. 1-321197 (Patent Document 1) and Japanese Utility Model Application Laid-Open No. 4-122488 (Patent Document 2) is known. The slitter device described in Patent Document 1 has a plurality of ring-shaped cutting blades and a plurality of lamps electrically connected to the plurality of cutting blades, respectively. The slitter device described in Patent Document 2 also has a plurality of ring-shaped thin blades and a plurality of light-emitting elements electrically connected to the plurality of thin blades, respectively. In the slitter devices described in Patent Documents 1 and 2, in both cases, the contact state of the cutting blade (thin blade) is detected by using a lamp (light-emitting element).

[0004] In the slitter devices described in Patent Documents 1 and 2, in both cases, the lamp is attached to the device main body. On the other hand, when cutting a sheet-like member, in order to obtain a cut piece having a desired width, the number and position of the cutting blades may change. Therefore, there is a risk that the correspondence relationship between the lamp and the cutting blade may become difficult to understand.

Summary of the Invention

[0005] A one-sided cutting device unit, not limited to this disclosure, includes a base; a first shaft member attached to the base and extending along a first rotation axis; a cylindrical holder attached to the first shaft member; an annular first cutting edge member attached to the holder; a second shaft member attached to the base and extending along a second rotation axis parallel to the first rotation axis; a cylindrical second cutting edge member attached to the second shaft member; and detection means for detecting contact between the first cutting edge member and the second cutting edge member.

[0006] The second shaft member, the first cutting edge member, and the second cutting edge member are all electrically conductive, and the detection means includes a power supply, a connection terminal attached to the holder, a light-emitting member attached to the holder, a first wiring that electrically connects the connection terminal and the power supply, a second wiring that electrically connects the second shaft member and the power supply, a third wiring that electrically connects the light-emitting member and the connection terminal, and a fourth wiring that electrically connects the light-emitting member and the first cutting edge member. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view showing a unit for a cutting device, not limited to this disclosure. [Figure 2] Figure 1 is a perspective view of the holder and the first cutting blade member in the cutting device unit shown. [Figure 3] Figure 2 shows the holder and the first cutting edge member as viewed from a direction perpendicular to the outer circumferential surface of the holder. [Figure 4] Figure 3 is an exploded view of the holder. [Figure 5] Figure 3 is a plan view of the holder and the first cutting edge member as seen from the V direction. [Figure 6] This is a magnified view of region VI shown in Figure 5. [Figure 7] This is a cross-sectional view of the VII-VII section shown in Figure 6. [Figure 8] This is a perspective view showing a holder in a cutting device unit, not limited to this disclosure. [Figure 9]This is a cross-sectional view of the holder shown in Figure 8 with the first cutting edge member attached, and corresponds to Figure 7. [Figure 10] This is a perspective view showing a holder and a first cutting blade member in a cutting device unit, not limited to this disclosure. [Figure 11] Figure 10 is a plan view of the holder and the first cutting edge member, and corresponds to Figure 5. [Figure 12] Figure 11 shows a cross-sectional view of the XII-XII section. [Figure 13] This is a schematic diagram showing a cutting device (method for manufacturing sheet fragments) not limited to the present disclosure. [Modes for carrying out the invention]

[0008] <Unit for cutting device> Hereinafter, a unit 1 for a one-sided cutting device, not limited to this disclosure (hereinafter sometimes referred to as "Unit 1"), will be described in detail with reference to the drawings. However, in the drawings referenced below, for the sake of clarity, only the main components necessary for describing the embodiments are shown in a simplified manner. Therefore, Unit 1 may include any components not shown in the drawings referenced. Furthermore, the dimensions of the components in each drawing do not faithfully represent the dimensions of the actual components or the dimensional ratios of each component.

[0009] Unit 1 may have a base 3, a first shaft member 5, and a second shaft member 7, as shown in the example (not limited to) in Figure 1.

[0010] The first shaft member 5 may be attached to the base 3. The first shaft member 5 may be detachably attached to the base 3. The first shaft member 5 may also extend along the first rotation axis O1. The first shaft member 5 is rotatable around the first rotation axis O1.

[0011] The first shaft member 5 is not limited to a specific size. For example, the length of the first shaft member 5 in the direction along the first rotation axis O1 may be set to approximately 300 to 4000 mm. Also, the width (diameter) of the first shaft member 5 in the direction perpendicular to the first rotation axis O1 may be set to approximately 30 to 150 mm. The cross-section of the first shaft member 5 perpendicular to the first rotation axis O1 may be circular.

[0012] The second shaft member 7 may be attached to the base 3. The second shaft member 7 may be detachably attached to the base 3. The second shaft member 7 may also extend along the second rotation axis O2. The second shaft member 7 is rotatable around the second rotation axis O2.

[0013] The second shaft member 7 may be located below the first shaft member 5. Furthermore, the second shaft member 7 is rotatable in the opposite direction to the first shaft member 5. For example, if gears that mesh with each other are attached to the first shaft member 5 and the second shaft member 7, then when the first shaft member 5 rotates, the second shaft member 7 can rotate in the opposite direction to the first shaft member 5 in accordance with its rotation.

[0014] The second rotation axis O2 may be parallel to the first rotation axis O1. Parallelism is not limited to strict parallelism; it may also mean allowing a tilt of approximately ±5°. Furthermore, the second rotation axis O2 may overlap with the first rotation axis O1 when the unit 1 is viewed from the side of the first axis member 5.

[0015] The second shaft member 7 is not limited to a specific size. For example, the length of the second shaft member 7 in the direction along the second rotation axis O2 may be set to approximately 300 to 4000 mm. Also, the width (diameter) of the second shaft member 7 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 7 perpendicular to the second rotation axis O2 may be circular.

[0016] The base 3 may have a lower plate part 9 and a pair of side wall parts 11 fixed to the lower plate part 9 with their main surfaces facing each other. The lower plate part 9 may have a rectangular upper surface 13. The pair of side wall parts 11 may be fixed to the lower plate part 9 along the short sides of the upper surface 13. Incidentally, the first shaft member 5 and the second shaft member 7 may be positioned parallel to the upper surface 13 of the lower plate part 9.

[0017] The lower plate part 9 is not limited to a specific size. For example, in a non-limiting example shown in FIG. 1, the width of the lower plate part 9 in the x-axis direction may be set to about 400 to 5000 mm. Also, the width of the lower plate part 9 in the y-axis direction may be set to about 100 to 500 mm. The width (thickness) of the lower plate part 9 in the z-axis direction may be set to about 20 to 100 mm.

[0018] Incidentally, in a non-limiting example shown in FIG. 1, the direction parallel to the first rotation axis O1 and the second rotation axis O2 may be the x-axis direction. Also, the direction orthogonal to this x-axis direction and parallel to the upper surface 13 of the lower plate part 9 may be the y-axis direction. The vertical direction in FIG. 1, which is orthogonal to the x-axis direction and the y-axis direction, may be the z-axis direction.

[0019] The pair of side wall parts 11 may each have a first support part 15 and a second support part 17 independent of each other.

[0020] The first support part 15 is capable of attaching the first shaft member 5. The unit 1 may have a pair of first bearing members 19 attached to both ends of the first shaft member 5. By holding the first bearing member 19 with the first support part 15, the first shaft member 5 may be attached to the first support part 15. In these cases, while the first shaft member 5 is stably held by the first support part 15, it is easy to rotate the first shaft member 5.

[0021] Examples of the first bearing member 19 may include an annular bearing or the like. This bearing may also be referred to as the first bearing. The first bearing is not limited to a specific size. For example, the outer diameter of the first bearing may be set to about 30 to 150 mm.

[0022] The second support portion 17 may be located below the first support portion 15. The second support portion 17 can be fitted with the second shaft member 7. The unit 1 may have a pair of second bearing members 21 attached to both ends of the second shaft member 7. The second shaft member 7 may be fitted with the second support portion 17 by holding these second bearing members 21 with the second support portion 17. In these cases, the second shaft member 7 is held stably by the second support portion 17, while the second shaft member 7 is easily rotated.

[0023] The second bearing member 21 may be, for example, an annular bearing. This bearing may also be referred to as the second bearing. The second bearing is not limited to a specific size. For example, the outer diameter of the second bearing may be set to approximately 30 to 150 mm.

[0024] The pair of sidewalls 11 are not limited to a specific size. For example, the width (thickness) of the sidewalls 11 in the x-axis direction may be set to approximately 10 to 60 mm. The width of the sidewalls 11 in the y-axis direction may be set to approximately 100 to 500 mm. The width of the sidewalls 11 in the z-axis direction may be set to approximately 200 to 800 mm.

[0025] The base 3 only needs to have a configuration that is strong enough to stably hold the first shaft member 5 and the second shaft member 7. Therefore, the base 3 is not limited to a configuration formed by a lower plate portion 9 and a pair of side wall portions 11. For example, the base 3 may have a concave shape in which the lower plate portion 9 and the pair of side wall portions 11 are integrally formed. Examples of materials for the base 3 include steel and stainless steel.

[0026] Unit 1 may have a holder 23. The holder 23 may be cylindrical in shape. The holder 23 may also be attached to the first shaft member 5. The holder 23 may be detachably attached to the first shaft member 5. The holder 23 may function as a member for fixing the first cutting edge member 25, which will be described later, to the first shaft member 5.

[0027] Unit 1 may have multiple holders 23. Adjacent holders 23 may be in contact with each other or may be separated. The number of holders 23 may be between 1 and 30.

[0028] Unit 1 may have a first cutting edge member 25. The first cutting edge member 25 may be annular in shape. The first cutting edge member 25 may also be attached to the holder 23. The first cutting edge member 25 may be detachably attached to the holder 23.

[0029] Unit 1 may have multiple first cutting edge members 25. The number of first cutting edge members 25 may be 1 to 30. The number of first cutting edge members 25 may be the same as the number of holders 23. Also, the first cutting edge members 25 may be disc-shaped or dish-shaped. The first cutting edge members 25 may also be called circular blades.

[0030] When the holder 23 is attached to the first shaft member 5 and the first cutting edge member 25 is attached to the holder 23, the first cutting edge member 25 can be fixed to the first shaft member 5 via the holder 23. Therefore, when the first shaft member 5 rotates, the first cutting edge member 25 can also rotate in accordance with the rotation of the first shaft member 5. Furthermore, when the unit 1 has multiple holders 23 and multiple first cutting edge members 25, adjusting the spacing between adjacent holders 23 allows for the adjustment of the spacing between adjacent first cutting edge members 25 accordingly.

[0031] Unit 1 may have a second cutting edge member 27. The second cutting edge member 27 may be cylindrical in shape. The second cutting edge member 27 may also be attached to the second shaft member 7. The second cutting edge member 27 may be attached to the second shaft member 7 in a detachable manner. When the second cutting edge member 27 is attached to the second shaft member 7, the second cutting edge member 27 can rotate in accordance with the rotation of the second shaft member 7. Unit 1 may have multiple second cutting edge members 27. The number of second cutting edge members 27 may be 1 to 30.

[0032] The second cutting edge member 27 may be attached to the second shaft member 7 such that the side surface of the second cutting edge member 27 contacts the side surface of the first cutting edge member 25. In this case, a shear force can be generated between the first cutting edge member 25 and the second cutting edge member 27 by the contact between the side surface of the first cutting edge member 25, which is relatively easily elastically deformed, and the side surface of the second cutting edge member 27, which is relatively less elastically deformed. This shear force makes it possible to cut the sheet-like material. Therefore, a relatively wide sheet-like material fed into unit 1 can be cut by the first cutting edge member 25 and the second cutting edge member 27 to produce relatively narrow sheet workpieces (sheet fragments).

[0033] Here, the second shaft member 7, the first cutting edge member 25, and the second cutting edge member 27 may each be electrically conductive. For example, these members may be made of a conductive material. Examples of conductive materials include copper, steel, stainless steel, and aluminum.

[0034] Furthermore, the second shaft member 7, the first cutting edge member 25, and the second cutting edge member 27 may have conductive surfaces. For example, these members may be configured to have an insulating substrate and a conductive coating film located on the substrate.

[0035] Examples of insulating substrate materials include resins, ceramics, and DLC (Diamond-like Carbon). Examples of resins include polyethylene, polypropylene, polystyrene, and polyvinyl chloride. Examples of ceramics include alumina (Al2O3), zirconia (ZrO2), aluminum nitride (AlN), silicon carbide (SiC), and silicon nitride (Si3N4).

[0036] Furthermore, examples of materials for the conductive coating include Ti-based coatings containing Ti. Examples of Ti-based coatings include TiN, TiC, TiCN, TiAlN, TiAlCN, and TiAlON. The conductive coating may also be referred to as a conductive film. The coating may be positioned on the substrate by chemical vapor deposition (CVD) or physical vapor deposition (PVD).

[0037] Furthermore, at least one of the second shaft member 7, the first cutting edge member 25, and the second cutting edge member 27 may be made of a conductive material, and the remaining members may be configured to have an insulating substrate and a conductive coating film located on the substrate.

[0038] Unit 1 may have a detection means 29 for detecting contact between the first cutting blade member 25 and the second cutting blade member 27. The detection means 29 may include a power supply 31, a connection terminal 33, a light-emitting member 35, a first wiring 37, a second wiring 39, a third wiring 41, and a fourth wiring 43, as shown in the example, which is not limited to, Figures 1 to 7.

[0039] The connection terminal 33 may be attached to the holder 23. The light-emitting member 35 may also be attached to the holder 23. The first wiring 37 may be electrically connected to the connection terminal 33 and the power supply 31. The second wiring 39 may be electrically connected to the second shaft member 7 and the power supply 31. The third wiring 41 may be electrically connected to the light-emitting member 35 and the connection terminal 33. The fourth wiring 43 may be electrically connected to the light-emitting member 35 and the first cutting edge member 25.

[0040] In these cases, since the light-emitting member 35 is attached to the holder 23 instead of the base 3, the correspondence between the light-emitting member 35 and the first cutting blade member 25 is easy to understand even if the position of the first cutting blade member 25 changes. Furthermore, in the detection means 29, the circuit can be configured by the first wiring 37, the second wiring 39, the third wiring 41, and the fourth wiring 43. Therefore, the detection means can be introduced to existing cutting device units in which the first shaft member 5 and the second shaft member 7 are generally conductive, without requiring complex modifications.

[0041] In other words, in existing cutting device units, the base 3, the first shaft member 5, and the second shaft member 7 are generally made of conductive metals such as steel and stainless steel. When a detection means for detecting contact between the first cutting blade member 25 and the second cutting blade member 27 is attached to the unit 1, if both the first shaft member 5 and the second shaft member 7 are used as part of the electrical circuit of the detection means, an electrical short circuit between the base 3, the first shaft member 5, and the second shaft member 7 may become a problem. Therefore, an insulating coating is required for either the base 3, the first shaft member 5, or the second shaft member 7. However, since the base 3, the first shaft member 5, and the second shaft member 7 are all large parts, applying an insulating coating is not easy and may require significant modification costs.

[0042] On the other hand, in the detection means 29 of this disclosure, the first shaft member 5 is not used as part of an electrical circuit. The electrical circuit in the detection means 29 is formed by the connection terminal 33 attached to the holder 23, and the first wiring 37 electrically connected to the connection terminal 33 and the power supply 31. Specifically, the first shaft member 5 can be prevented from becoming part of an electrical circuit by applying an insulating coating to the part of the holder 23 that comes into contact with the first shaft member 5, or by forming the holder 23 from an insulating material.

[0043] The holder 23 is smaller, lighter, and less expensive than the first shaft member 5. Therefore, the detection means 29 can be introduced to existing cutting device units simply by replacing the holder 23, without requiring complex modifications that would incur significant modification costs.

[0044] Furthermore, as described above, the first wiring 37, the second wiring 39, the third wiring 41, and the fourth wiring 43 are components for electrically connecting the detection means 29 and the power supply 31 to form a circuit. Therefore, the first wiring 37, the second wiring 39, the third wiring 41, and the fourth wiring 43 do not need to be "wiring" in the strict sense. For example, these wirings may be partially composed of "terminals."

[0045] Examples of light-emitting members 35 include lamps and LEDs. Unit 1 may have multiple light-emitting members 35. The number of light-emitting members 35 may be 1 to 30. The number of light-emitting members 35 may be the same as the number of holders 23.

[0046] As described above, the holder 23 may have insulating properties. In this case, the holder 23 is less likely to short-circuit electrically with the first shaft member 5. Also, it is easier to form the third wiring 41 and the fourth wiring 43. For example, the holder 23 may be made of an insulating material. Examples of insulating materials include the same materials exemplified above for the insulating substrate.

[0047] Furthermore, as described above, the holder 23 may have an insulating surface. For example, as shown in the example not limited to Figure 7, the holder 23 may have a cylindrical body 45, an inner circumferential surface 47 of the body 45, and a coating film 49 located on the inner circumferential surface 47. The body 45 of the holder 23 may be conductive, and the coating film 49 may be insulating.

[0048] If the main body 45 of the holder 23 is conductive, the main body 45 may be used as either the third wiring 41 or the fourth wiring 43, while taking care to avoid electrical short circuits between the third wiring 41 and the fourth wiring 43. For example, the main body 45 may be used as the fourth wiring 43 with the third wiring 41, which is covered with an insulating material, embedded inside the main body 45. Similarly, the main body 45 may be used as the third wiring 41 with the fourth wiring 43, which is covered with an insulating material, embedded inside the main body 45.

[0049] The conductive body 45 can be made of the same material as exemplified by the second shaft member 7, for example. The insulating coating 49 can be made of resin, ceramics, or DLC (Diamond-like Carbon), for example. The insulating coating 49 may be located on other surfaces of the body 45 in addition to the inner circumferential surface 47. The insulating coating 49 may also be referred to as an insulating film.

[0050] The distance L1 between the connection terminal 33 and the light-emitting member 35 may be less than or equal to half the outer diameter D of the holder 23, as shown in the example (not limited to) in Figure 5. In this case, the length of the third wiring 41 can be shortened, which may contribute to reducing manufacturing costs and improving the rigidity of the holder 23.

[0051] The spacing L1 and outer diameter D are not limited to specific sizes. For example, the spacing L1 may be set to approximately 5 to 80 mm, and the outer diameter D may be set to approximately 60 to 180 mm.

[0052] The holder 23 may have a first main surface 51 and a second main surface 53, as shown in the example not limited to the holders in Figures 3 and 4. The second main surface 53 may be located on the opposite side of the first main surface 51. The first cutting edge member 25 may be in contact with the first main surface 51.

[0053] Furthermore, if the holder 23 has a main body 45, the main body 45 may have a first main surface 51 and a second main surface 53. In this case, the holder 23 may further have a cover 55. The cover 55 may function as a member for fixing the first cutting blade member 25 to the main body 45.

[0054] For example, the main body 45 may have a male screw 57 located on the first main surface 51, as shown in the example not limited to Figure 4. The lid 55 may also have a female screw 59 fixed to the male screw 57. The first cutting blade member 25 may be located between the first main surface 51 and the lid 55. In these cases, the lid 55 can be attached to the main body 45 by fixing the female screw 59 to the male screw 57. Furthermore, the first cutting blade member 25 can be fixed to the main body 45 while in contact with the first main surface 51.

[0055] The connection terminals 33 and light-emitting member 35 may be located closer to the second main surface 53 than to the first main surface 51, as shown in the example (not limited to) in Figure 3. In other words, the distance L21 between the connection terminals 33 and light-emitting member 35 and the second main surface 53 may be smaller than the distance L22 between the connection terminals 33 and light-emitting member 35 and the first main surface 51.

[0056] In this case, the thickness of the holder 23 between the connection terminal 33 and the light-emitting member 35 and the first main surface 51 is easily secured. Therefore, the restraining stability of the first cutting edge member 25 with respect to the holder 23 is easily improved. In addition, damage to the first wiring 37 by the first cutting edge member 25 is less likely to occur. If the distance between the connection terminal 33 and the second main surface 53 and the distance between the light-emitting member 35 and the second main surface 53 are different, the above configuration may be evaluated based on the larger distance.

[0057] The holder 23 may have an outer circumferential surface 61, as shown in the example not limited to Figure 2. The light-emitting member 35 may be attached to the outer circumferential surface 61. In these cases, the light-emitting member 35 is easily visible. If the holder 23 has a main body 45, the main body 45 may have an outer circumferential surface 61. The outer circumferential surface 61 may be located between the first main surface 51 and the second main surface 53. The light-emitting member 35 may also protrude from the outer circumferential surface 61. If the light-emitting member 35 protrudes, it may be located between the outer circumferential surface 61 and the diameter of the first cutting edge member 25.

[0058] The connection terminal 33 may be attached to the outer surface 61. In this case, the first wiring 37 is easier to attach to the connection terminal 33. If the light-emitting member 35 and the connection terminal 33 are attached to the outer surface 61, the connection terminal 33 and the light-emitting member 35 may be positioned along the circumferential direction of the holder 23.

[0059] The first wiring 37 may be detachably attached to the connection terminal 33. In this case, the first wiring 37 can be separated from the connection terminal 33 after checking the contact between the first cutting blade member 25 and the second cutting blade member 27. Therefore, the first wiring 37 is less likely to be damaged when cutting a sheet-like material. For example, unit 1 may have a detachable connector, and the first wiring 37 may be detachably attached to the connection terminal 33 by this connector.

[0060] The power supply 31, connection terminal 33, light-emitting member 35, first wiring 37, second wiring 39, third wiring 41, and fourth wiring 43 that constitute the detection means 29 do not need to be inseparable and may be partially removable. For example, the third wiring 41 and fourth wiring 43 may be mounted inside the main body 45 of the holder 23, while components such as the light-emitting member 35 and light-transmitting member 67 may be removable from the main body 45. In such a case, when the light-emitting member 35 and light-transmitting member 67 deteriorate, only these components can be replaced, and there is no need to replace the main body 45.

[0061] Unit 1 may have multiple holders 23, first cutting edge members 25, second cutting edge members 27, and light-emitting members 35. In this case, the multiple light-emitting members 35 may be arranged in a line along the first rotation axis O1, as shown in the example shown in Figure 1. In these cases, the light-emitting members 35 are easily visible.

[0062] Furthermore, in the above case, each of the multiple light-emitting members 35 can emit light individually. Therefore, instead of a whole-system detection that simultaneously detects whether or not there is contact between the multiple first cutting blade members 25 and the multiple second cutting blade members 27, individual detection is possible. Consequently, it is easier to efficiently detect whether or not there is contact between the multiple first cutting blade members 25 and the multiple second cutting blade members 27, and it is easier to suppress the occurrence of cutting defects.

[0063] The detection means 29 may have a switch 63. The switch 63 can control the flow of current on and off. If the detection means 29 has a switch 63, it can be activated only when it is necessary to check the blade tip position. The position of the switch 63 is not particularly limited as long as it performs its function.

[0064] Next, we will describe another one-sided cutting device unit 1A (hereinafter sometimes referred to as "Unit 1A") that is not limited to this disclosure. In the following, we will mainly describe the differences between Unit 1A and Unit 1, and may omit detailed explanations of aspects that have the same configuration as Unit 1. Therefore, descriptions of Unit 1 may be used to understand the configuration of Unit 1A. The same applies to Unit 1B, which will be described later.

[0065] In unit 1A, the holder 23 may have an annular recess 65 located on its outer circumferential surface 61, as shown in the example (not limited to) in Figures 8 and 9. The light-emitting member 35 may be attached to the recess 65. In these cases, the light-emitting member 35 is less likely to be damaged. The recess 65 may also be referred to as a groove.

[0066] Unit 1A may further include a light-transmitting member 67. The light-transmitting member 67 may be attached to the recess 65, or it may be an annular shape that covers the light-emitting member 35. In these cases, the light-emitting member 35 is less likely to be damaged.

[0067] Examples of materials for the light-transmitting member 67 include glass and light-transmitting resins. Examples of light-transmitting resins include PMMA (PolyMethyl MethAcrylate) resin, PET (PolyEthylene Terephthalate) resin, and PC (PolyCarbonate) resin. The light-transmitting properties of the light-transmitting member 67 may be such that the light-emitting member 35 can be seen through the light-transmitting member 67.

[0068] The light-emitting member 35 may have a first light-emitting element 69 and a second light-emitting element 71, as shown in the example (not limited to) in Figure 9. The second light-emitting element 71 may emit light in a different color than the first light-emitting element 69. In these cases, it becomes possible to separately indicate the purpose and positional relationship of the cutting tool at the cutting site.

[0069] The connection terminal 33 may be mounted in the recess 65 so as to be exposed from the light-transmitting member 67.

[0070] Next, we will describe another one-sided cutting device unit 1B (hereinafter sometimes referred to as "Unit 1B") that is not limited to the present disclosure.

[0071] In unit 1B, the light-emitting member 35 and the connection terminal 33 may be attached to the second main surface 53, as shown in the example (not limited to) in Figures 10 to 12. In this case, the light-emitting member 35 and the connection terminal 33 are less likely to be damaged.

[0072] Furthermore, if the light-emitting member 35 and the connection terminal 33 are attached to the second main surface 53, the connection terminal 33 and the light-emitting member 35 may be positioned along the circumferential direction of the holder 23.

[0073] <Cutting device> Next, a one-sided cutting device 101, not limited to this disclosure, will be described in detail with reference to the drawings, using the case in which it has the above-described unit 1 as an example.

[0074] The cutting device 101 may have a unit 1, a first roll 103, and a second roll 105, as shown in the example (not limited to) in Figure 13. When the cutting device 101 has a unit 1, cutting defects are less likely to occur.

[0075] The first roll 103 may have a sheet-like material 201 wound around it, or it may feed the sheet-like material 201 to the unit 1. The first roll 103 may also function as a supply mechanism for supplying the sheet-like material 201 to the unit 1. When using the cutting device 101, the first roll 103 may rotate, causing the sheet-like material 201 wound around the first roll 103 to be fed to the unit 1.

[0076] The second roll 105 may wind up the sheet-like material 201 cut by unit 1. The second roll 105 may function as a winding mechanism for winding up the sheet-like material 201 cut by unit 1.

[0077] The second roll 105 may be one or more. If there is one second roll 105, the sheet-like members 201 cut and separated into individual pieces by unit 1 may be wound onto one second roll 105 all at once. If there are multiple second rolls 105, the sheet-like members 201 cut and separated into individual pieces by unit 1 may be wound onto each of the multiple second rolls 105. Note that the sheet-like members 201 cut and separated into individual pieces by unit 1 may also be referred to as sheet fragments 203.

[0078] The cutting device 101 may have a first guide roll 107 located between the unit 1 and the first roll 103. In this case, the sheet-like material 201 can be supplied from the first roll 103 to the unit 1 through the first guide roll 107, making it easier to stabilize the supply of the sheet-like material 201. The first guide roll 107 may consist of one roll or multiple rolls.

[0079] The cutting device 101 may have a second guide roll 109 located between unit 1 and the second roll 105. In this case, the sheet fragments 203 can be transported from unit 1 to the second roll 105 through the second guide roll 109, which helps to stabilize the transport state of the sheet fragments 203. The second guide roll 109 may consist of one roll or multiple rolls.

[0080] In the example shown in Figure 13, the cutting device 101 has unit 1, but it is not limited to this configuration. For example, the cutting device 101 may have unit 1A or unit 1B.

[0081] <Method for manufacturing sheet fragments> Next, a method for manufacturing a single sheet fragment 203, not limited to this disclosure, will be described in detail with reference to the drawings, using the above-described unit 1 as an example.

[0082] The sheet fragment 203 may be manufactured by cutting a sheet-like member 201, as shown in the example (not limited to) in Figure 13. The manufacturing method of the sheet fragment 203 may include the following steps: (1) A step of electrically connecting the connection terminal 33 and the first wiring 37 in unit 1, (2) A step of confirming the contact status of the first cutting edge member 25 and the second cutting edge member 27 using the detection means 29, (3) The step of separating the first wiring 37 from the connection terminal 33, (4) A step of cutting the sheet-like member 201 with the first cutting blade member 25 and the second cutting blade member 27, It may have.

[0083] In the manufacturing method of the sheet fragment 203, when unit 1 is used, cutting defects are less likely to occur.

[0084] Examples of sheet-like members 201 include metal foil, paper, and resin film.

[0085] In the example shown in Figure 13, which is not limited to this configuration, Unit 1 is used, but the configuration is not limited to this. For example, Unit 1A or Unit 1B may be used.

[0086] The above examples illustrate manufacturing methods for the single-sided cutting device units 1, 1A, and 1B, the cutting device 101, and the sheet fragment 203, which are not limited to the present disclosure. However, 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.

[0087] For example, the manufacturing method for the cutting device units 1, 1A, 1B, the cutting device 101, and the sheet fragment 203 may have the following configuration. (1) The cutting device unit comprises a base, a first shaft member attached to the base and extending along a first rotation axis, a cylindrical holder attached to the first shaft member, an annular first cutting edge member attached to the holder, a second shaft member attached to the base and extending along a second rotation axis parallel to the first rotation axis, a cylindrical second cutting edge member attached to the second shaft member, and detection means for detecting contact between the first cutting edge member and the second cutting edge member. The second shaft member, the first cutting edge member and the second cutting edge member are all conductive, and the detection means comprises a power supply, a connection terminal attached to the holder, a light-emitting member attached to the holder, a first wiring that electrically connects the connection terminal and the power supply, a second wiring that electrically connects the second shaft member and the power supply, a third wiring that electrically connects the light-emitting member and the connection terminal, and a fourth wiring that electrically connects the light-emitting member and the first cutting edge member. (2) The unit for the cutting device described in (1) above may have a distance between the connection terminal and the light-emitting member that is less than or equal to half the outer diameter of the holder. (3) The cutting device unit according to (1) or (2) above, wherein the holder has a first main surface and a second main surface located on the opposite side of the first main surface, the first cutting blade member is in contact with the first main surface, and the connection terminal and the light-emitting member may be located closer to the second main surface than to the first main surface. (4) In any one of the cutting device units described in (1) to (3) above, the holder may have an outer peripheral surface, and the light-emitting member may be attached to the outer peripheral surface. (5) Any one of the cutting device units described in (1) to (4) above may have a plurality of holders, first cutting blade members, second cutting blade members, and light-emitting members, and the plurality of light-emitting members may be arranged in a line along the first rotation axis. (6) Any one of the cutting device units described in (1) to (5) above may have a holder having an outer circumferential surface and an annular recess located on the outer circumferential surface, and the light-emitting member may be attached to the recess. (7) The cutting device unit described in (6) above may further have an annular translucent member that is attached to the recess and covers the light-emitting member. (8) Any one of the cutting device units described in (1) to (7) above may have a switch as the detection means. (9) Any one of the cutting device units described in (1) to (8) above may have a light-emitting member comprising a first light-emitting element and a second light-emitting element that emits light in a different color from the first light-emitting element. (10) The cutting device may include one of the cutting device units described in (1) to (9) 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 that has been cut by the cutting device unit. (11) A method for manufacturing a sheet fragment may include the steps of: electrically connecting the connection terminal and the first wiring in any one of the cutting device units described in (1) to (9) above; checking the contact status of the first cutting blade member and the second cutting blade member using the detection means; separating the first wiring from the connection terminal; and cutting the sheet-like member with the first cutting blade member and the second cutting blade member. [Explanation of symbols]

[0088] 1. Cutting device unit (unit) 3. Base 5...1st shaft member 7...Second shaft member 9...Lower plate part 11. Side wall section 13...Top surface 15...1st support part 17...Second support part 19. First bearing member 21...Second bearing member 23...Holder 25...First cutting edge member 27...Second cutting edge member 29. Detection means 31...Power supply 33...Connection terminals 35. Light-emitting component 37...1st wiring 39...Second wiring 41...Third wiring 43...4th wiring 45...Main unit 47...Inner peripheral surface 49. Coating film (insulating film) 51...First main surface 53...Second main surface 55... Lid 57...Male screw 59...Female thread 61...outer surface 63...switch 65... recessed 67...Light-transmitting material 69...First light-emitting element 71...Second light-emitting element 101...Cutting device 103...1st roll 105...2nd roll 107...First Guide Roll 109...Second Guide Roll 201...Sheet-like material 203... Sheet fragment O1...First rotation axis O2...Second rotation axis

Claims

1. Base and, A first shaft member attached to the base and extending along the first rotation axis, A cylindrical holder attached to the first shaft member, A ring-shaped first cutting blade member attached to the holder, A second shaft member is attached to the base and extends along a second rotation axis parallel to the first rotation axis, A cylindrical second cutting edge member attached to the second shaft member, A cutting device unit having a detection means for detecting contact between the first cutting blade member and the second cutting blade member, The second shaft member, the first cutting edge member, and the second cutting edge member each have electrical conductivity, The detection means is Power supply and The connection terminal attached to the holder, The light-emitting member attached to the holder, A first wiring that electrically connects the aforementioned connection terminal and the aforementioned power supply, The second wiring electrically connects the second shaft member and the power supply, A third wiring that electrically connects the light-emitting member and the connection terminal, A cutting device unit comprising a fourth wiring that electrically connects the light-emitting member and the first cutting blade member.

2. The cutting device unit according to claim 1, wherein the distance between the connection terminal and the light-emitting member is less than or equal to half the outer diameter of the holder.

3. The holder has a first main surface and a second main surface located on the opposite side of the first main surface. The first cutting edge member contacts the first main surface, The cutting device unit according to claim 1 or 2, wherein the connection terminal and the light-emitting member are located closer to the second main surface than to the first main surface.

4. The holder has an outer circumferential surface, The cutting device unit according to claim 1 or 2, wherein the light-emitting member is attached to the outer circumferential surface.

5. The holder, the first cutting edge member, the second cutting edge member, and the light-emitting member each have multiple such members. The cutting device unit according to claim 1 or 2, wherein the plurality of light-emitting members are arranged in a line along the first rotation axis.

6. The aforementioned holder is, Outer surface and, It has an annular recess located on the outer surface, The cutting device unit according to claim 1 or 2, wherein the light-emitting member is attached to the recess.

7. The cutting device unit according to claim 6, further comprising an annular light-transmitting member attached to the recess and covering the light-emitting member.

8. The unit for a cutting device according to claim 1 or 2, wherein the detection means has a switch.

9. The light-emitting member is First light-emitting element, A cutting device unit according to claim 1 or 2, comprising a second light-emitting element that emits light in a different color from the first light-emitting element.

10. A cutting device unit according to claim 1 or 2, A sheet-like material is wound around a first roll that feeds the sheet-like material to the cutting device unit, A cutting device comprising: a second roll for winding up the sheet-like member cut by the cutting device unit.

11. A step of electrically connecting the connection terminal and the first wiring in the cutting device unit according to claim 1 or 2, The detection means is used to confirm the contact status of the first cutting edge member and the second cutting edge member, The steps of separating the first wiring from the connection terminal, A method for manufacturing a sheet fragment, comprising the step of cutting a sheet-like member with the first cutting blade member and the second cutting blade member.

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