Cutting device

Abstract

To provide a cutting device which can rapidly remove dust generated when a work-piece is cut off.SOLUTION: A cutting device cutting a work-piece comprises: a die with a lower blade on which the work-piece is laid; and a punch with an upper blade which sandwiches, when the work-piece is laid on the die, the work-piece between the die and the punch and presses the work-piece from a side opposite to the die to cut the work-piece through shear action of the upper blade and the lower blade. The punch includes an air injection which injects air toward at least one of the work-piece and the lower blade, and the die includes a suction port which vacuums dust generated when a work-piece is cut off.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a cutting device. [Background technology]

[0002] Conventionally, a cutting die is known in which an upper die punch and a lower die die are engaged to process a workpiece placed on the die. In this technology, a groove is provided below the punch to allow air to flow in, extending from the side of the punch to the underside of the punch's cutting edge. During cutting, dust is collected from below the die when the punch is lowered to its bottom dead center. This allows the air to flow into the die through the groove below the punch, increasing the force that forcibly absorbs the cutting chips downward. This eliminates the vacuum that occurs near the punch and die during cutting, preventing the cutting chips from rising up. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-328754 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional techniques, dust generated by cutting a workpiece cannot be sucked in until it moves to a dust collection position located below the die. [Means for solving the problem]

[0005] The present disclosure can be realized in the following forms.

[0006] (1) According to a first aspect of the present disclosure, a cutting device is provided. The cutting device for cutting a workpiece includes a die having a lower blade and on which the workpiece is placed, and a punch having an upper blade. With the workpiece placed on the die, the punch sandwiches the workpiece and presses it from the side opposite the die to cut the workpiece through a shearing action between the upper blade and the lower blade. The punch further has an air injection port for injecting air toward at least one of the workpiece and the lower blade, and the die further has a suction port for sucking dust generated by cutting the workpiece. According to this aspect, the cutting device can inject air toward at least one of the workpiece and the lower blade from the air injection port provided in the punch during the cutting process. This allows the cutting device to detach dust adhering to the cut surface of the workpiece from the cut surface and move dust floating in the cutting area of ​​the workpiece toward the suction port during the cutting process. Furthermore, the cutting device can suck dust through the suction port provided in the die during the cutting process. This allows the cutting device to suck and collect dust in the cutting area during the cutting process without having to move the dust below the die. As a result, the cutting device can quickly remove dust generated by cutting the workpiece. (2) In the above embodiment, the air jet port may be provided on a punch-side surface of the punch that faces the lower blade during the cutting process of cutting the workpiece, and the suction port may be provided on a die-side surface of the die that faces the upper blade during the cutting process. According to this embodiment, the air jet port can be provided on the punch-side surface. This allows the cutting device to more reliably remove dust adhering to the cut surface of the workpiece from the cut surface during the cutting process and to more reliably move dust floating in the cutting area of ​​the workpiece toward the suction port. Also, according to this embodiment, the suction port can be provided on the die-side surface. This allows the cutting device to more reliably suck in and collect dust during the cutting process. As described above, the cutting device can more reliably remove dust generated by cutting the workpiece. (3) In the above embodiment, a brush may be provided on a die-side surface of the die that faces the upper blade during the cutting process of cutting the workpiece, and that can come into contact with the upper blade during the cutting process. According to this embodiment, the cutting device can more reliably remove dust adhering to the upper blade by bringing the brush into contact with the upper blade to shake off the dust adhering to the upper blade. (4) In the above embodiment, the brush may be disposed between the suction port and the bottom dead center of the punch in the pressing direction when the upper blade presses the workpiece. According to this embodiment, the cutting device can more reliably suck in the dust shaken off from the upper blade through the suction port. Therefore, the cutting device can more reliably remove the dust adhering to the upper blade. (5) In the above embodiment, the angle between the direction in which the air ejection port ejects the air and the orthogonal direction perpendicular to the pressing direction in which the upper blade presses the workpiece may be 10 degrees or more and 30 degrees or less. According to this embodiment, the cutting device can more reliably move dust toward the suction port. This makes it easier for the cutting device to suck dust through the suction port, thereby more reliably removing the dust. Furthermore, the formation of the air ejection port reduces the strength of the punch, thereby reducing the possibility of deformation or breakage of the punch. The present disclosure can be realized in various forms other than the above-described cutting device, such as a method for cutting a workpiece, a method for manufacturing a cutting device, a method for controlling a cutting device, a computer program for implementing the control method, and a non-transitory recording medium on which the computer program is recorded. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a schematic diagram showing the configuration of a cutting device. [Figure 2] FIG. 3 is a diagram showing details of a workpiece in this embodiment. [Figure 3] 1A and 1B are diagrams for explaining a method of cutting a workpiece using a cutting device. [Figure 4]5A and 5B are diagrams for explaining detailed configurations of an air injection port and a suction port and a method for removing dust. [Figure 5] 10A and 10B are diagrams showing the effect of air injection. DETAILED DESCRIPTION OF THE INVENTION

[0008] A. First embodiment: FIG. 1 is a schematic diagram showing the configuration of a cutting apparatus 100. The cutting apparatus 100 is an apparatus that cuts a workpiece W using a shearing action. In this embodiment, when the cutting apparatus 100 is in use, the X and Y directions are directions along a horizontal plane, and the Z direction is a direction along the direction of gravity. The use state of the cutting apparatus 100 refers to a state in which the cutting apparatus 100 is installed on a horizontal plane and the workpiece W is arranged parallel to the horizontal plane. The X, Y, and Z directions are perpendicular to each other. Hereinafter, the direction of gravity is defined as the +Z direction, and the anti-gravity direction is defined as the -Z direction. The direction from the front side to the rear side of the cutting apparatus 100 is defined as the +X direction, and the direction from the rear side to the front side is defined as the -X direction. Furthermore, when viewing the cutting apparatus 100 from the front side, the direction from left to right is defined as the +Y direction, and the direction from right to left is defined as the -Y direction. Therefore, the height direction of the cutting apparatus 100 coincides with the Z direction along the direction of gravity. The depth direction of the cutting device 100 coincides with the X direction, which extends horizontally in the front-to-back direction of the cutting device 100. The width direction of the cutting device 100 coincides with the Y direction, which extends horizontally in the left-to-right direction of the cutting device 100. The thickness direction of the workpiece W coincides with the Z direction, which is in the direction of gravity. When the shape of the workpiece W is rectangular, the depth direction of the workpiece W coincides with the X direction, which is in the horizontal direction. The width direction of the workpiece W coincides with the Y direction, which is in the horizontal direction and perpendicular to the X direction. The same applies to the following figures and explanations.

[0009] FIG. 2 is a diagram illustrating details of the workpiece W in this embodiment. The workpiece W in this embodiment is an electrode assembly 9 constituting an all-solid-state battery. The electrode assembly 9 includes one negative electrode foil 91, two negative electrode solid electrolyte layers 92, 96, two separator solid electrolyte layers 93, 97, two positive electrode solid electrolyte layers 94, 98, and two positive electrode foils 95, 99. The electrode assembly 9 is a rectangular laminate formed by stacking these layers 91 to 99. In the electrode assembly 9, the negative electrode foil 91 is disposed at the center in the stacking direction of the laminate. When the cutting device 100 is in use, the stacking direction of the electrode assembly 9 corresponds to the thickness direction of the workpiece W and coincides with the Z direction along the direction of gravity. The first negative electrode solid electrolyte layer 92, the first separator solid electrolyte layer 93, the first positive electrode solid electrolyte layer 94, and the first positive electrode foil 95 are stacked in this order on the negative electrode foil 91 on one side of the electrode assembly 9 in the stacking direction. The second negative electrode solid electrolyte layer 96, the second separator solid electrolyte layer 97, the second positive electrode solid electrolyte layer 98, and the second positive electrode foil 99 are stacked in this order on the negative electrode foil 91 on the other side in the stacking direction of the electrode body 9.

[0010] At the ends Wj, Wk of the electrode body 9 manufactured by coating and lamination, coating unevenness may occur during coating, or misalignment may occur among the layers 91 to 99 during lamination. Therefore, in this embodiment, the cutting device 100 cuts the electrode body 9 along the lamination direction at a first cutting position C1 located on the side of one end Wj in the width direction of the electrode body 9, and at a second cutting position C2 located on the side of the other end Wk in the width direction of the electrode body 9.

[0011] As shown in FIG. 1, the cutting device 100 includes a movable mold 1, a fixed mold 2, a lifting device 3, and a control device 4.

[0012] The movable die 1 includes an upper plate 10, punches 11 and 12, a work holder 15, and guide pins 17 and 28.

[0013] The upper plate 10 supports punches 11 and 12, a workpiece holder 15, and guide pins 17 and 18. An elevating device 3 is attached to an upper surface 10t of the upper plate 10.

[0014] The workpiece holder 15 prevents the workpiece W placed on the die 21 of the fixed mold 2 from shifting position during the cutting process of cutting the workpiece W. The workpiece holder 15 has a base portion 151 and a biasing member 155. The lower surface 151b of the base portion 151 comes into contact with the upper surface Wt of the workpiece W during the cutting process. A tip end 155t of the biasing member 155 is attached to the upper surface 151t of the base portion 151. The biasing member 155 biases the base portion 151 in the direction of gravity. A base end 155s of the biasing member 155 is attached to the lower surface 10b of the upper plate 10. The workpiece holder 15 is positioned so as to be able to come into contact with the workpiece W during the cutting process. In this embodiment, the workpiece holder 15 is positioned in the center of the lower surface 10b side of the upper plate 10.

[0015] The guide pins 17 and 18 are used to position the movable die 1 relative to the fixed die 2. The guide pins 17 and 18 are fitted into guide portions 27 and 28 of the fixed die 2, thereby restricting relative movement of the movable die 1 in the horizontal direction. Tips 17t and 18t of the guide pins 17 and 18 are protruding members that are inserted into the guide portions 27 and 28 of the fixed die 2 during the cutting process. Base ends 17s and 18s of the guide pins 17 and 18 are fixed to the lower surface 10b side of the upper plate 10. In this embodiment, the movable die 1 includes a first guide pin 17 and a second guide pin 18. The first guide pin 17 is inserted into the first guide portion 27 of the fixed die 2. The first guide pin 17 is formed on one end side 10j of the upper plate 10 in the width direction of the cutting device 100, so as to protrude from the upper plate 10 toward the lower plate 20. The second guide pin 18 is inserted into the second guide portion 28 of the fixed mold 2. The second guide pin 18 is formed on the upper plate 10 at the other end 10k side in the width direction of the cutting device 100 so as to protrude from the upper plate 10 toward the lower plate 20.

[0016] The upper surfaces 11t, 12t of the punches 11, 12 are fixed to the lower surface 10b of the upper plate 10. The punches 11, 12 have upper blades 110, 120 for cutting the workpiece W. When the workpiece W is placed on the die 21, the punches 11, 12 sandwich the workpiece W and press it from the side opposite the die 21, thereby cutting the workpiece W by a shearing action between the upper blades 110, 120 and the lower blades 210, 220. In this embodiment, in order to cut one end Wj side and the other end Wk side in the width direction of the rectangular workpiece W, the movable die 1 includes a first punch 11 for cutting the workpiece W at a first cutting position C1 and a second punch 12 for cutting the workpiece W at a second cutting position C2. The first punch 11 and the second punch 12 face each other along the width direction of the cutting device 100. The first punch 11 is disposed between the workpiece holder 15 and the first guide pin 17 along the width direction of the cutting device 100. The second punch 12 is disposed between the workpiece holder 15 and the second guide pin 18 along the width direction of the cutting device 100. The upper blades 110, 120 are disposed at positions corresponding to the cutting positions C1, C2 of the workpiece W. The first upper blade 110 is a cutting blade provided on the first punch 11. The first upper blade 110 is provided in an area including a corner where the first punch-side opposing surface 11m and the lower surface 11b of the first punch 11 intersect. The first punch-side opposing surface 11m is a surface of the side surface of the first punch 11 that faces the first lower blade 210 provided on the die 21 during the cutting process. The second upper blade 120 is a cutting blade provided on the second punch 12. The second upper blade 120 is provided in a region including a corner where the second punch-side opposing surface 12m intersects with the lower surface 12b of the second punch 12. The second punch-side opposing surface 12m is the surface of the side surface of the second punch 12 that faces the second lower blade 220 provided on the die 21 during the cutting process.

[0017] The punches 11, 12 further have air outlets 115, 125 that inject air toward at least one of the workpiece W and the lower blades 210, 220. In this embodiment, the first punch 11 has a first air outlet 115 that injects air toward one end Wj of the workpiece W and the first lower blade 210. The first air outlet 115 is provided so as to open to the first punch-side opposing surface 11m. The second punch 12 has a second air outlet 125 that injects air toward the other end Wk of the workpiece W and the second lower blade 220. The second air outlet 125 is provided so as to open to the second punch-side opposing surface 12m.

[0018] The fixed mold 2 includes a lower plate 20, a die 21, and guide portions 27 and 28. The lower plate 20 supports the die 21. The guide portions 27 and 28 are used to position the movable mold 1 relative to the fixed mold 2. The guide portions 27 and 28 receive the guide pins 17 and 18 of the movable mold 1 and restrict the relative movement of the movable mold 1 in the horizontal direction. The guide portions 27 and 28 are recesses or holes that receive the guide pins 17 and 18 of the movable mold 1. In this embodiment, in order to receive the two guide pins 17 and 18 provided on the movable mold 1, the fixed mold 2 includes a first guide portion 27 and a second guide portion 28. The first guide portion 27 is a hole through which the first guide pin 17 of the movable mold 1 is inserted. The first guide portion 27 is formed on the lower plate 20 at one end 20j of the lower plate 20 in the width direction of the cutting device 100, penetrating from the upper surface 20t to the lower surface 20b of the lower plate 20. The second guide portion 28 is a hole through which the second guide pin 18 of the movable mold 1 is inserted. The second guide portion 28 is formed on the lower plate 20 on the other end 20k side in the width direction of the cutting device 100, so as to penetrate from the upper surface 20t to the lower surface 20b of the lower plate 20.

[0019] The lower surface 20b of the die 21 is fixed to the upper surface 20t of the lower plate 20. The workpiece W is placed on the upper surface 21t of the die 21 so that the lower surface Wb of the workpiece W is in contact with the upper surface 21t of the die 21. The die 21 has lower blades 210 and 220 for cutting the workpiece W. The lower blades 210 and 220 are arranged at positions corresponding to the cutting positions C1 and C2 of the workpiece W. In this embodiment, in order to cut one end Wj side and the other end Wk side in the width direction of the rectangular workpiece W, the die 21 has a first lower blade 210 for cutting the workpiece W at the first cutting position C1 and a second lower blade 220 for cutting the workpiece W at the second cutting position C2. The first lower blade 210 is provided in an area including a corner where the first die-side opposing surface 21j and the upper surface 21t of the die 21 intersect. The first die-side opposing surface 21j is a surface of the side of the die 21 that faces the first upper blade 110 provided on the first punch 11 during the cutting process. The second lower blade 220 is provided in an area including a corner where the second die-side opposing surface 21k intersects with the top surface 21t of the die 21. The second die-side opposing surface 21k is a surface of the side of the die 21 that faces the second upper blade 120 provided on the second punch 12 during the cutting process.

[0020] The die 21 further has suction ports 215, 225 that suck dust generated by cutting the workpiece W. In this embodiment, the die 21 has a first suction port 215 that sucks dust from the first punch 11 side and a second suction port 225 that sucks dust from the second punch 12 side. The first suction port 215 is provided so as to open to the first die-side facing surface 21j. The second suction port 225 is provided so as to open to the second die-side facing surface 21k.

[0021] The die 21 further has brushes 23, 24 for removing dust adhering to the upper blades 110, 120. The brushes 23, 24 are provided on the die-side opposing surfaces 21j, 21k at positions that can come into contact with the upper blades 110, 120 during the cutting process. In this embodiment, the die 21 has two brushes 23, 24 for brushing off dust adhering to the upper blades 110, 120 provided on the two punches 11, 12, respectively. The first brush 23 is used to remove dust adhering to the first upper blade 110. The second brush 24 is used to remove dust adhering to the second upper blade 120.

[0022] The lifting device 3 moves the punch 11 in a pressing direction D1 when the upper blades 110, 120 press the workpiece W, and in a separating direction D2 opposite to the pressing direction D1. The control device 4 controls the operation of the lifting device 3.

[0023] FIG. 3 is a diagram illustrating a method for cutting a workpiece W using the cutting device 100. In FIG. 3, the lifting device 3 and the control device 4 are not shown. When cutting a workpiece W using the cutting device 100, the workpiece W is placed on the die 21, as shown in the upper diagram FG1 of FIG. 3. Then, by driving the lifting device 3, the movable die 1 is lowered in the pressing direction D1 where the fixed die 2 and the workpiece W are located. As a result, as shown in the middle diagram FG2 of FIG. 3, the upper surface Wt of the workpiece W comes into contact with the lower surface 151b of the base portion 151 of the workpiece holder 15, and the workpiece W is constrained between the workpiece holder 15 and the die 21. With the workpiece W constrained, the movable die 1 further descends in the pressing direction D1. As a result, the tip 17t of the first guide pin 17 of the movable die 1 is inserted into the first guide portion 27 of the fixed die 2, and the tip 18t of the second guide pin 18 of the movable die 1 is inserted into the second guide portion 28 of the fixed die 2, thereby positioning the movable die 1 with respect to the fixed die 2. As shown in the lower diagram FG3 of FIG. 3, the movable die 1 further descends in the pressing direction D1. As a result, the first cutting position C1 of the workpiece W is cut by the shearing action between the first upper blade 110 of the first punch 11 and the first lower blade 210 of the die 21, and one end Wj side of the workpiece W in the width direction is separated from the workpiece W as waste material Wc. The second cutting position C2 of the workpiece W is cut by the shearing action between the second upper blade 120 of the second punch 12 and the second lower blade 220 of the die 21, and the other end Wk side of the workpiece W in the width direction is separated from the workpiece W as waste material Wc.

[0024] During the cutting process, debris generated during cutting of the workpiece W may scatter in the cutting region, which is the region surrounding the cutting positions C1 and C2 of the workpiece W, and the scattered debris may adhere to the cut surface of the workpiece W. Furthermore, during the cutting process, contact between the cut surface of the workpiece W and the upper blades 110 and 120 may cause the upper blades 110 and 120 to move while dragging the cut surface of the workpiece W in the pressing direction D1, which may result in sagging on the cut surface of the workpiece W. If dust such as debris or sagging from the workpiece W adheres to the workpiece W, there is a risk of damaging the surface of the workpiece W. Furthermore, if the upper blades 110 and 120 or the lower blades 210 and 220 with dust attached thereto are used to cut another workpiece W, there is a risk of damaging the upper blades 110 and 120 or the lower blades 210 and 220, or of damaging or deforming the surface of the workpiece W. Furthermore, in the present embodiment, when the workpiece W to be cut is the electrode assembly 9, the following situation may occur when the upper blades 110, 120 move while dragging the cut surface of the workpiece W in the pressing direction D1 during the cutting process. In this case, one of the negative electrode solid electrolyte layers 92, 96 and the positive electrode solid electrolyte layers 94, 98 may come into contact with the other. Furthermore, during the cutting process, dust scattered from the solid electrolyte layer of one of the negative electrode solid electrolyte layers 92, 96 and the positive electrode solid electrolyte layers 94, 98 may adhere to the solid electrolyte layer of the other electrode on the cut surface of the workpiece W. If the electrolyte of one electrode comes into contact with the electrolyte of the other electrode, a short circuit may occur. Therefore, it is desirable to quickly remove dust generated by cutting the workpiece W. Therefore, the cutting device 100 cuts the workpiece W while removing dust generated by cutting the workpiece W.

[0025] 4 is a diagram illustrating the detailed configuration of the air injection port 115 and the suction port 215 and the method for removing the dust Wp. In FIG. 4, the first air injection port 115, the first suction port 215, and the first brush 23 located at one end in the width direction of the cutting device 100 are used as examples. The functions of the second air injection port 125, the second suction port 225, and the second brush 24 located at the other end in the width direction of the cutting device 100 are similar to those of the components 115, 215, and 23 located at one end in the width direction of the cutting device 100.

[0026] 4, during the cutting process, the first air ejection port 115 ejects air Ar from above the cutting area Cp of the workpiece W toward the downward side where the first suction port 215 is located. This allows the first air ejection port 115 to detach dust Wp, such as residue adhering to the cut surface Wd of the workpiece W and sagging formed on the cut surface Wd of the workpiece W, from the cut surface Wd, and to move dust Wp floating in the cutting area Cp of the workpiece W toward the first suction port 215.

[0027] FIG. 5 is a diagram showing the effect of spraying air Ar. The left diagram FG6 of FIG. 5 shows the cut surface NWd of the workpiece W cut without spraying air Ar from the air spray nozzles 115 and 125. The right diagram FG7 of FIG. 5 shows the cut surface Wd of the workpiece W cut while spraying air Ar from the air spray nozzles 115 and 125. As shown in the left diagram FG6 of FIG. 5, dust Wp adheres to the cut surface NWd of the workpiece W cut without spraying air Ar from the air spray nozzles 115 and 125. On the other hand, as shown in the right diagram FG7 of FIG. 5, the dust Wp has been removed from the cut surface Wd of the workpiece W cut while spraying air Ar from the air spray nozzles 115 and 215.

[0028] The pressure when the air Ar is ejected is, for example, 3 kPa. The height dimension of the air ejection ports 115, 125 is, for example, 1 mm. The depth dimension of the air ejection ports 115, 125 is, for example, equal to or greater than the depth dimension of the workpiece W. By making the depth dimension of the air ejection ports 115, 125 equal to or greater than the depth dimension of the workpiece W, it is possible to remove dust Wp across the entire width of the workpiece W. Furthermore, as shown in the upper diagram FG4 of FIG. 4, the angle α formed between the ejection direction D3 when the first air ejection port 115 ejects the air Ar and the orthogonal direction D4 perpendicular to the pressing direction D1 is, for example, 10 degrees or more and 30 degrees or less. Similarly, the angle α formed between the ejection direction D3 when the second air ejection port 125 shown in FIG. 1 ejects the air Ar and the orthogonal direction D4 perpendicular to the pressing direction D1 is, for example, 10 degrees or more and 30 degrees or less. By setting the angle α between the injection direction D3 and the orthogonal direction D4 to be between 10 degrees and 30 degrees, the dust Wp can be more reliably moved toward the suction port 215. This makes it easier to suck the dust Wp through the suction ports 215, 225, so the dust Wp can be more reliably removed. Furthermore, the formation of the air injection ports 115, 125 reduces the strength of the punches 11, 12, reducing the possibility of the punches 11, 12 being deformed or damaged.

[0029] 4, the first suction port 215 sucks the dust Wp from below the cutting region Cp. This allows the dust Wp to be sucked and collected in the cutting region Cp without having to move the dust Wp to the lower side of the die 21.

[0030] The pressure when sucking the dust Wp is, for example, -3 kPa. The diameter of the suction ports 215, 225 is, for example, 1 mm. A plurality of suction ports 215, 225 may be provided on the die-side facing surfaces 21j, 21k along the height direction of the cutting device 100. In this case, the suction ports 215, 225 are respectively disposed between the upper surface 21t of the die 21 and the brushes 23, 24 along the height direction of the cutting device 100. By providing a plurality of suction ports 215 on the die-side facing surfaces 21j, 21k, the dust Wp can be more reliably sucked and removed.

[0031] As shown in the lower diagram FG5 of FIG. 4, during the cutting process, the first brush 23 comes into contact with the first upper blade 110. This shakes off dust Wp adhering to the first upper blade 110. At this time, the first brush 23 may be disposed on the first die-side opposing surface 21j between the first suction port 215 and the bottom dead center P of the first punch 11 in the pressing direction D1. Similarly, during the cutting process, the second brush 24 shown in FIG. 1 comes into contact with the second upper blade 120. This shakes off dust Wp adhering to the second upper blade 120. At this time, the second brush 24 may be disposed on the second die-side opposing surface 21k between the second suction port 225 and the bottom dead center P of the second punch 12 in the pressing direction D1. 4, by arranging the brushes 23, 24 between the suction ports 215, 225 and the bottom dead center P of the punches 11, 12 in the pressing direction D1, the dust Wp shaken off from the upper blades 110, 120 can be more reliably sucked through the suction ports 215, 225. Therefore, the dust Wp adhering to the upper blades 110, 120 can be more reliably removed.

[0032] According to the above embodiment, the cutting device 100 can inject air Ar from the air injection ports 115, 225 provided on the punches 11, 12 toward at least one of the workpiece W and the lower blades 210, 220 during the cutting process. As a result, the cutting device 100 can detach dust Wp adhering to the cut surface Wd of the workpiece W from the cut surface Wd and move the dust Wp floating in the cutting region Cp of the workpiece W toward the suction ports 215, 225 during the cutting process. Furthermore, the cutting device 100 can suck the dust Wp through the suction ports 215, 225 provided on the die 21 during the cutting process. As a result, the cutting device 100 can suck and collect the dust Wp in the cutting region Cp without moving the dust Wp below the die 21 during the cutting process. As described above, the cutting device 100 can quickly remove the dust Wp generated by cutting the workpiece W. Therefore, the possibility that the quality of the workpiece W will be reduced or the punches 11, 12 and the die 21 will be damaged due to the dust Wp can be reduced.

[0033] Furthermore, according to the above embodiment, the cutting device 100 can quickly remove the dust Wp generated when cutting the electrode body 9 as the workpiece W. This can reduce the possibility of a short circuit occurring.

[0034] Furthermore, according to the above embodiment, the air ejection ports 115, 125 can be provided on the punch-side opposing surfaces 11m, 12m. In this manner, the cutting device 100 can more reliably detach the dust Wp adhering to the cut surface Wd of the workpiece W from the cut surface Wd during the cutting process, and more reliably move the dust Wp floating in the cutting region Cp of the workpiece W toward the suction ports 215, 225. Furthermore, according to the above first embodiment, the suction ports 215, 225 can be provided on the die-side opposing surfaces 21j, 21k during the cutting process. In this manner, the cutting device 100 can more reliably suck in and collect the dust Wp during the cutting process. Therefore, the cutting device 100 can more reliably remove the dust Wp generated by cutting the workpiece W.

[0035] Furthermore, according to the above embodiment, the cutting device 100 can more reliably remove dust Wp adhering to the upper blades 110, 120 by bringing the brushes 23, 24 into contact with the upper blades 110, 120 and shaking off the dust Wp adhering to the upper blades 110, 120.

[0036] B. Other Embodiments: (B1) The workpiece W to be cut may be something other than the electrode body 9. The cutting positions C1 and C2 of the workpiece W are not limited to those described above. When the shape of the workpiece W is rectangular, the workpiece W may be cut at the first cutting position C1 without cutting at the second cutting position C2. For example, in addition to the first cutting position C1 and the second cutting position C2, the workpiece W may be cut along the stacking direction at a third cutting position (not shown) located at one end of the workpiece W in the depth direction. That is, the number of cutting positions C1 and C2 of the workpiece W may be one or more than two. The workpiece W may be cut into, for example, a circular shape. That is, the cutting device 100 may be a punching device, which is a type of press processing device. In either case, the cutting device 100 includes punches 11 and 12 and dies 21 of the number and shape corresponding to the number of cutting positions C1 and C2 of the workpiece W and the cut shape of the workpiece W. The shape of the workpiece W may be other than rectangular.

[0037] (B2) The arrangement and configuration of the air injection ports 115, 125 and the suction ports 215, 225 are not limited to those described above.

[0038] The present disclosure is not limited to the above-described embodiments and can be realized in various configurations without departing from the spirit thereof. For example, the technical features of the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0039] 1... Movable mold, 2... Fixed mold, 3... Lifting device, 4... Control device, 9... Electrode body, 10... Upper plate, 10b... Lower surface of upper plate, 10j... One end of upper plate, 10k... Other end of upper plate, 10t... Upper surface of upper plate, 11... First punch, 11b... Lower surface of first punch, 11m... Opposing surface to first punch, 11t... Upper surface of first punch, 12... Second punch, 12b... Lower surface of second punch, 12m... Opposing surface to second punch, 15... Work holder, 17... First guide pin, 17s... First guide pin base end of pin, 17t...tip of first guide pin, 18...second guide pin, 18t...tip of second guide pin, 20...lower plate, 20b...lower surface of lower plate, 20j...one end of lower plate, 20k...other end of lower plate, 20t...upper surface of lower plate, 21...die, 21j...first die side facing surface, 21k...second die side facing surface, 21t...upper surface of die, 23...first brush, 24...second brush, 27...first guide portion, 28...second guide portion, 91...negative electrode foil, 92...first negative electrode solid electrolyte layer, 93...second 1 separator solid electrolyte layer, 94...first positive electrode solid electrolyte layer, 95...first positive electrode foil, 96...second negative electrode solid electrolyte layer, 97...second separator solid electrolyte layer, 98...second positive electrode solid electrolyte layer, 99...second positive electrode foil, 100...cutting device, 110...first upper blade, 115...first air jet nozzle, 120...second upper blade, 125...second air jet nozzle, 151...base portion, 151b...lower surface of base portion, 151t...upper surface of base portion, 155...biasing member, 155s...biasing member base end, 155t...tip of biasing member, 210...first lower blade, 215...first suction port, 220...second lower blade, 225...second suction port, Ar...air, C1...first cutting position, C2...second cutting position, Cp...cutting area, D1...pressing direction, D2...separating direction, D3...jet direction, D4...orthogonal direction, NWd, Wd...cutting surface, P...bottom dead center, W...workpiece, Wb...bottom surface of workpiece, Wc...debris, Wj...one end of workpiece, Wk...other end of workpiece, Wp...dust, Wt...top surface of workpiece

Claims

1. A cutting device for cutting a workpiece, a die having a lower blade and on which the workpiece is placed; a punch having an upper blade, which, when the workpiece is placed on the die, sandwiches the workpiece and presses it from the opposite side of the die to cut the workpiece by a shearing action between the upper blade and the lower blade; The punch further comprises: an air ejection port for ejecting air toward at least one of the workpiece and the lower blade; The die further comprises: The cutting device has a suction port for sucking up dust generated by cutting the workpiece.

2. 2. The cutting device of claim 1, the air ejection port is provided on a punch-side opposing surface of the side surface of the punch that faces the lower blade during a cutting process of cutting the workpiece, The suction port is provided on a die-side surface of the side of the die that faces the upper blade during the cutting process.

3. 10. The cutting device of claim 1, further comprising: A cutting device comprising a brush provided on a die-side opposing surface of the die that faces the upper blade during the cutting process of cutting the workpiece, the brush being capable of coming into contact with the upper blade during the cutting process.

4. 4. The cutting device according to claim 3, A cutting device, wherein the brush is disposed between the suction port and the bottom dead center of the punch in a pressing direction when the upper blade presses the workpiece.

5. 2. The cutting device of claim 1, a cutting device, wherein an angle formed between a direction in which the air ejection port ejects the air and an orthogonal direction perpendicular to a pressing direction in which the upper blade presses the workpiece is 10 degrees or more and 30 degrees or less.

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