JP2018107075A - Electrode inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrode inspection device capable of easily inspecting both surfaces of an electrode.SOLUTION: In an electrode inspection device 100, an electrode 20 is sucked from a lower side and conveyed by a first suction conveyer 30, such that a first inspection part 50 is capable of inspecting one surface (an upper surface of the electrode in a relevant attitude) of the electrode 20. On the other hand, the electrode 20 is sucked from an upper side and conveyed by a second suction conveyer 60, such that a second inspection part 80 is capable of inspecting the other surface (a lower surface of the electrode in a relevant attitude) of the electrode 20. Thus, both the surfaces of the electrode 20 can be inspected even in a state where a direction of the electrode 20 is maintained without turning it over. Further, cleaners 40 and 70 are provided in the first suction conveyer 30 and the second suction conveyer 60, such that the inspection can be implemented after making the inspection easy to implement by removing foreign substances from the surfaces of the electrode 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electrode inspection apparatus.

  Conventionally, what is shown in patent document 1 is known as an electrode test | inspection apparatus which test | inspects an electrode. This electrode inspection apparatus includes an adsorption conveyor that adsorbs and conveys an electrode, and an inspection unit that inspects the surface of the electrode conveyed by the adsorption conveyor.

JP 2012-160352 A

  Here, when inspecting the electrode, it may be required to inspect both surfaces. As a method for inspecting both surfaces of the electrode in this manner, there is a method in which one surface is inspected from the upper side with respect to the conveyed electrode and then the electrode is turned over to inspect the other surface. However, when such a method is adopted, there is a problem that a mechanism for turning it over is necessary, and the apparatus becomes large. Further, there is a possibility of powder falling or the like when turning over the electrode, and it is necessary to take measures against the powder falling or the like. From the above, it has been required to easily inspect both surfaces of the electrode.

  The objective of this invention is providing the electrode test | inspection apparatus which can test | inspect both surfaces of an electrode easily.

  The electrode inspection apparatus which concerns on 1 aspect of this invention is an electrode inspection apparatus which test | inspects an electrode, Comprising: A 1st adsorption | suction conveyor which adsorb | sucks an electrode from the lower side, and conveys an electrode, and a 1st adsorption conveyor A first inspection unit for inspecting the electrode to be performed from the upper side, a second adsorption conveyor for adsorbing the electrode from the upper side and conveying the electrode, and a second inspecting the electrode conveyed by the second adsorption conveyor from the lower side 2 inspection units, and a cleaner that is provided on at least one of the first suction conveyor and the second suction conveyor and removes foreign matters from the surface of the electrode.

  In such an electrode inspection apparatus, the first inspection unit inspects one surface of the electrode (the upper surface of the electrode in the posture) by sucking and transporting the electrode from the lower side by the first suction conveyor. Can do. On the other hand, the second inspection unit can inspect the other surface of the electrode (the lower surface of the electrode in the posture) by adsorbing and transporting the electrode from above by the second suction conveyor. In this way, both surfaces of the electrode can be inspected even when the orientation is maintained without turning the electrode over. Moreover, since the cleaner is provided in at least one of the first suction conveyor and the second suction conveyor, the inspection can be performed after removing foreign substances from the surface of the electrode to facilitate the inspection. As described above, both surfaces of the electrode can be easily inspected.

  The electrode inspection apparatus may further include a disposal box that is provided in the middle of the second suction conveyor and discards the electrodes. Thereby, the electrode judged to be unacceptable as a result of the inspection can be discarded in the disposal box. Here, since the second adsorption conveyor adsorbs the electrode from the upper side, the electrode can be discarded into the disposal box by dropping the electrode from the second adsorption conveyor.

  The electrode inspection apparatus may further include a dropping mechanism that applies a force from above to the electrode conveyed by the second suction conveyor to drop the electrode into the disposal box. With such a configuration, the electrode can be dropped into the disposal box without stopping the suction of the second suction conveyor.

  According to the present invention, both surfaces of an electrode can be easily inspected.

It is sectional drawing which shows the inside of the electrical storage apparatus manufactured by applying the electrode inspection apparatus which concerns on embodiment of this invention. It is the II-II sectional view taken on the line of FIG. It is a schematic side view which shows the electrode inspection apparatus which concerns on embodiment of this invention. It is a schematic side view which shows an example of the injection | throwing-in mechanism to a disposal box. It is a schematic side view which shows the other example of the injection | throwing-in mechanism to a disposal box. It is the figure which looked at the making mechanism shown in Drawing 5 from the lower side. It is a schematic side view which shows the other example of the injection | throwing-in mechanism to a disposal box.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a cross-sectional view showing the inside of a power storage device manufactured by applying an electrode inspection device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. 1 and 2, the power storage device 1 is a lithium ion secondary battery having a stacked electrode assembly.

  The power storage device 1 includes, for example, a substantially rectangular parallelepiped case 2 and an electrode assembly 3 accommodated in the case 2. The case 2 is made of a metal such as aluminum. Although not shown, for example, a non-aqueous (organic solvent) electrolyte is injected into the case 2. On the case 2, the positive terminal 4 and the negative terminal 5 are arranged so as to be separated from each other. The positive terminal 4 is fixed to the case 2 via an insulating ring 6, and the negative terminal 5 is fixed to the case 2 via an insulating ring 7. Although not shown, an insulating film is disposed between the electrode assembly 3 and the inner side surface and bottom surface of the case 2, and the case 2 and the electrode assembly 3 are insulated by the insulating film. Yes. In FIG. 1, for convenience, a slight gap is provided between the lower end of the electrode assembly 3 and the bottom surface of the case 2, but in reality, the lower end of the electrode assembly 3 is located inside the case 2 via an insulating film. Is in contact with the bottom of A gap may be formed between the electrode assembly 3 and the case 2 by arranging a spacer between the electrode assembly 3 and the case 2.

  The electrode assembly 3 has a structure in which a plurality of positive electrodes 8 and a plurality of negative electrodes 9 are alternately stacked via a bag-shaped separator 10. The positive electrode 8 is wrapped in a bag-like separator 10. The positive electrode 8 wrapped in the bag-shaped separator 10 is configured as a positive electrode 11 with a separator. Therefore, the electrode assembly 3 has a structure in which a plurality of separator-attached positive electrodes 11 and a plurality of negative electrodes 9 are alternately stacked. The electrodes located at both ends of the electrode assembly 3 are the negative electrodes 9.

  The positive electrode 8 includes a metal foil 14 that is a positive electrode current collector made of, for example, an aluminum foil, and a positive electrode active material layer 15 formed on both surfaces of the metal foil 14. The metal foil 14 has a foil body portion 14a having a rectangular shape in plan view, and a tab 14b integrated with the foil body portion 14a. The tab 14b protrudes from an edge near one end in the longitudinal direction of the foil body 14a. The tab 14b penetrates the separator 10. The plurality of tabs 14 b extending from the plurality of positive electrodes 8 are connected (welded) to the conductive member 12 in a state of being collected, and are connected to the positive electrode terminal 4 via the conductive member 12. In FIG. 2, the tab 14b is omitted for convenience.

  The positive electrode active material layer 15 is formed on both front and back surfaces of the foil main body portion 14a. The positive electrode active material layer 15 is a porous layer formed including a positive electrode active material and a binder. Examples of the positive electrode active material include composite oxide, metallic lithium, and sulfur. The composite oxide includes, for example, at least one of manganese, nickel, cobalt, and aluminum and lithium.

  The negative electrode 9 includes a metal foil 16 that is a negative electrode current collector made of, for example, copper foil, and negative electrode active material layers 17 formed on both surfaces of the metal foil 16. The metal foil 16 includes a foil body portion 16a having a rectangular shape in plan view and a tab 16b integrated with the foil body portion 16a. The tab 16b protrudes from the edge in the vicinity of one end in the longitudinal direction of the foil body 16a. The tab 16 b is connected to the negative electrode terminal 5 through the conductive member 13. In FIG. 2, the tab 16b is omitted for convenience.

  The negative electrode active material layer 17 is formed on both front and back surfaces of the foil main body portion 16a. The negative electrode active material layer 17 is a porous layer formed including a negative electrode active material and a binder. Examples of the negative electrode active material include carbon such as graphite, highly oriented graphite, mesocarbon microbeads, hard carbon, and soft carbon, alkali metals such as lithium and sodium, metal compounds, SiOx (0.5 ≦ x ≦ 1.5 ) And the like or boron-added carbon.

  The separator 10 has a rectangular shape in plan view. Examples of the material for forming the separator 10 include a porous film made of a polyolefin-based resin such as polyethylene (PE) and polypropylene (PP), or a woven or non-woven fabric made of polypropylene, polyethylene terephthalate (PET), methylcellulose, or the like. .

  When the power storage device 1 configured as described above is manufactured, first, the positive electrode 11 with separator and the negative electrode 9 are manufactured, and then the positive electrode 11 with separator and the negative electrode 9 are alternately stacked, and the positive electrode 11 with separator and the negative electrode 9 are stacked. Is fixed to obtain the electrode assembly 3. Then, the tab 14b of the positive electrode 11 with the separator is connected to the positive electrode terminal 4 through the conductive member 12, and the tab 16b of the negative electrode 9 is connected to the negative electrode terminal 5 through the conductive member 13, and then the electrode assembly 3 is attached to the case. 2 to accommodate.

  Next, the electrode inspection apparatus 100 according to the embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic side view showing the electrode inspection apparatus 100. In the following description, the object to be transported may be the positive electrode 8 or the negative electrode 9. Therefore, the object to be transported will be referred to as the electrode 20 on the assumption that both poles can be included. The electrode inspection apparatus 100 is an apparatus that inspects the cut electrode 20 after the cut of the electrode 20 and aligns the electrode 20 for a subsequent process. In the present embodiment, the electrode inspection device 100 is disposed on the downstream side of the cutting device 200 that cuts the electrode 20. The electrode 20 that has been inspected by the electrode inspection apparatus 100 is transported by the transport conveyor 110 and supplied to a predetermined processing apparatus 120. The conveyor 110 includes crosspieces 111 provided on the belt at a predetermined pitch, and conveys the electrodes 20 to the processing device 120 with the electrodes 20 positioned by the crosspieces 111. When the electrode 20 is the positive electrode 8, the processing device 120 is a device that performs a process of wrapping the positive electrode 8 with the separator 10.

  The cutting device 200 is a device that obtains a plurality of electrodes 20 by cutting a part of the belt-like member 250 into the shape of the electrodes 20. The cutting device 200 includes a nip unit 201 composed of a pair of nip rolls for unwinding the belt-like member 250, a die-cut unit 202 for cutting the electrode 20 from the belt-like member 250, and a cleaning head 203 provided on a roller 202A on the upper side of the die-cut unit 202. And a winding roller 204 for winding the cut strip-shaped member 250. The die cut unit 202 is a rotary die cut type cutting device, and an upper blade 202A is provided with an etching blade and a sponge. The cutting mode of the cutting device 200 is not particularly limited, and the electrode 20 may be punched out with a laser.

  The electrode inspection apparatus 100 includes a first suction conveyor 30, a first cleaner 40, a first inspection unit 50, a second suction conveyor 60, a second cleaner 70, and a second inspection unit 80. And a disposal box 90. In the following description, the direction in which the electrode inspection apparatus 100 transports the electrode 20, that is, the direction from the cutting apparatus 200 to the transport conveyor 110 is referred to as “transport direction D1”.

  The first suction conveyor 30 sucks the electrode 20 from the lower side and conveys the electrode 20. The first suction conveyor 30 extends from the position of the die cutting unit 202 of the cutting device 200 along the transport direction D1. The first suction conveyor 30 places the cut electrode 20 on the upper surface 30a. Moreover, the 1st adsorption | suction conveyor 30 can adsorb | suck the electrode 20 which contacted the upper surface 30a by attracting | sucking with a suction device from the back side of the upper surface 30a. The first suction conveyor 30 transports the electrode 20 in the transport direction D1 with the electrode 20 attracted to the upper surface 30a.

  The first cleaner 40 is provided on the first suction conveyor 30 and removes foreign matters from the surface of the electrode 20 conveyed by the first suction conveyor 30. The 1st cleaner 40 is arrange | positioned in the position which opposes the upper surface 30a of the 1st adsorption conveyor 30 on the upper side. Thereby, the 1st cleaner 40 can attract | suck the upper surface of the electrode 20 mounted in the upper surface 30a, and can remove the foreign material adhering to the surface of the electrode 20. FIG. The first cleaner 40 can remove foreign substances from the surface of the electrode 20 in a non-contact manner.

  The 1st inspection part 50 inspects electrode 20 conveyed with the 1st adsorption conveyor 30 from the upper part. The first inspection unit 50 is disposed at a position facing the upper surface 30 a of the first suction conveyor 30 on the upper side at a position downstream of the first cleaner 40. Moreover, the 1st test | inspection part 50 becomes a structure which images the electrode 20 mounted in the upper surface 30a of the 1st adsorption conveyor 30 from upper direction, and transmits the data acquired by the said imaging to the control apparatus not shown. ing. In a control device (not shown), the imaging data is subjected to image processing, and the posture, shape, peeling of the active material, presence / absence of a defective state such as a hole is inspected.

  The second suction conveyor 60 sucks the electrode 20 from above and conveys the electrode 20. The second suction conveyor 60 extends along the transport direction D1 from a position facing the downstream end of the first suction conveyor 30. The 2nd adsorption conveyor 60 adsorbs the electrode 20 conveyed by the 1st adsorption conveyor 30 to the lower surface 60a. The second suction conveyor 60 can suck the electrode 20 in contact with the lower surface 60a by sucking with the suction device from the back side of the lower surface 60a. The second adsorption conveyor 60 conveys the electrode 20 in the conveyance direction D1 with the electrode 20 adsorbed on the lower surface 60a.

  Note that the lower surface 60 a near the upstream end of the second suction conveyor 60 and the upper surface 30 a near the downstream end of the first suction conveyor 30 face each other in the vertical direction. In such a facing portion 65, the lower surface 60a of the second suction conveyor 60 and the upper surface 30a of the first suction conveyor 30 are separated from each other with a gap into which the electrode 20 can enter. Thereby, the electrode 20 conveyed to the vicinity of the downstream end portion of the first suction conveyor 30 comes into contact with the lower surface 60 a near the upstream end portion of the second suction conveyor 60. In the facing portion 65, the suction on the upper surface 30a of the first suction conveyor 30 is released, and the suction on the lower surface 60a of the second suction conveyor 60 is performed. Accordingly, the electrode 20 is transferred from the first suction conveyor 30 to the second suction conveyor 60.

  The lower surface 60a in the vicinity of the downstream end portion of the second suction conveyor 60 and the upper surface 110a in the vicinity of the upstream end portion of the transport conveyor 110 face each other in the vertical direction. In such a facing portion 66, the lower surface 60a of the second suction conveyor 60 and the upper surface 110a of the transfer conveyor 110 are separated from each other with a gap into which the electrode 20 enters. In the facing portion 66, the electrode 20 falls onto the upper surface 110 a of the transport conveyor 110 by releasing the suction on the lower surface 60 a of the second suction conveyor 60. Therefore, the electrode 20 is transferred from the second suction conveyor 60 to the transport conveyor 110.

  The second cleaner 70 is provided on the second suction conveyor 60 and removes foreign matters from the surface of the electrode 20 conveyed by the second suction conveyor 60. The second cleaner 70 is disposed at a position facing the lower surface 60a of the second suction conveyor 60 on the upper side. As a result, the second cleaner 70 can suck the lower surface of the electrode 20 placed on the lower surface 60 a and remove the foreign matter adhering to the surface of the electrode 20. The second cleaner 70 can remove foreign substances from the surface of the electrode 20 in a non-contact manner.

  The 2nd test | inspection part 80 test | inspects the electrode 20 conveyed by the 2nd adsorption conveyor 60 from lower side. The second inspection unit 80 is disposed at a position facing the lower surface 60 a of the second suction conveyor 60 on the lower side at a position downstream of the second cleaner 70. Moreover, the 2nd test | inspection part 80 becomes a structure which images the electrode 20 mounted in the lower surface 60a of the 2nd adsorption conveyor 60 from the bottom, and transmits the data acquired by the said imaging to the control apparatus not shown. ing. In a control device (not shown), the imaging data is subjected to image processing, and the posture, shape, peeling of the active material, presence / absence of a defective state such as a hole is inspected.

  The disposal box 90 is provided in the middle position of the second suction conveyor 60, and discards the electrode 20 determined to be unacceptable in at least one of the first inspection unit 50 and the second inspection unit 80. The disposal box 90 is provided on the downstream side of the second inspection unit 80. By applying force from the upper side to the electrode 20 conveyed by the second suction conveyor 60, only the electrode 20 determined to be unacceptable is dropped into the disposal box 90. On the other hand, since no force is applied to the electrode 20 determined to be acceptable from the upper side, the electrode 20 passes through the position of the disposal box 90 and is transferred to the transport conveyor 110.

  Next, referring to FIG. 4, a loading mechanism 260 for selectively loading the electrode 20 that has been determined to be unacceptable into the disposal box 90 will be described. In the charging mechanism 260, the second suction conveyor 60 is divided in the transport direction D1. Specifically, the second suction conveyor 60 is divided into an upstream conveyor 60A and a downstream conveyor 60B. Further, the end 60Aa on the downstream side of the conveyor 60A and the end 60Ba on the upstream side of the conveyor 60B are spaced apart from each other in the transport direction D1. The input mechanism 260 includes a waste air nozzle 140 between the downstream end 60Aa of the conveyor 60A and the upstream end 60Ba of the conveyor 60B. The waste air nozzle 140 functions as a dropping mechanism that applies a downward force by blowing air from above to the electrode 20 passing between the conveyor 60A and the conveyor 60B. As a result, the electrode 20 is peeled off from the second suction conveyor 60 and dropped into the disposal box 90. In addition, since the electrode 20 falls while being transported in the transport direction D1, the electrode 20 moves toward the transport direction D1 even during the fall. Therefore, the disposal box 90 is disposed downstream of the disposal air nozzle 140 in the transport direction D1. The waste air nozzle 140 blows air when the electrode 20 determined to be unacceptable passes, and stops without blowing air when the electrode determined to be acceptable passes.

  A suction device 62 is provided inside the belts of the conveyors 60A and 60B. Of the conveyors 60 </ b> A and 60 </ b> B, a range where the suction device 62 is provided is an adsorption region 61 that can adsorb the electrode 20. Accordingly, the suction device 62 cannot be provided in the region near the end 60Aa on the downstream side of the conveyor 60A and the end 60Ba on the upstream side of the conveyor 60B. Therefore, support air nozzles 130A and 130B are provided so that the electrode 20 determined to be an acceptable product does not fall near the end 60Aa on the downstream side of the conveyor 60A and the end 60Ba on the upstream side of the conveyor 60B. The air nozzle 130A blows air from below to the vicinity of the end 60Aa on the downstream side of the conveyor 60A. The air nozzle 130B blows air from below to the vicinity of the end 60Ba on the upstream side of the conveyor 60B.

  Next, another charging mechanism 300 will be described with reference to FIGS. When the charging mechanism 300 is employed, the second suction conveyor 60 is divided into a plurality of conveyors in the width direction. Here, the second suction conveyor 60 is divided into a conveyor 60C, a conveyor 60D, and a conveyor 60E in the width direction. The conveyor 60C, the conveyor 60D, and the conveyor 60E are separated from each other in the width direction. Waste air nozzles 150 are provided between the conveyor 60C and the conveyor 60D and between the conveyor 60D and the conveyor 60E. The waste air nozzle 150 functions as a dropping mechanism that applies a downward force to the electrode 20 by blowing air from above. As a result, the electrode 20 is peeled off from the second suction conveyor 60 and dropped into the disposal box 90.

  Next, operations and effects of the electrode inspection apparatus 100 according to the present embodiment will be described.

  In the electrode inspection apparatus 100 according to the present embodiment, the first inspection unit 50 sucks and conveys the electrode 20 from the lower side by the first suction conveyor 30, so that the first inspection unit 50 has one surface of the electrode 20 (the electrode in the posture). Can be inspected. On the other hand, the second inspection unit 80 can inspect the other surface of the electrode 20 (the lower surface of the electrode in the posture) by attracting and transporting the electrode 20 from above by the second suction conveyor 60. In this manner, both surfaces of the electrode 20 can be inspected even when the orientation is maintained without turning the electrode 20 upside down. Moreover, since the cleaners 40 and 70 are provided in the first suction conveyor 30 and the second suction conveyor 60, respectively, foreign matter is removed from the surface of the electrode 20, and the inspection is performed after facilitating the inspection. Can do. As described above, both surfaces of the electrode 20 can be easily inspected.

  The electrode inspection apparatus 100 further includes a disposal box 90 provided in the middle position of the second suction conveyor 60 and discarding the electrodes 20. As a result, the electrode 20 determined to be unacceptable as a result of the inspection can be discarded in the disposal box 90. Here, since the second adsorption conveyor 60 adsorbs the electrode 20 from above, the electrode 20 can be discarded into the disposal box 90 by dropping the electrode 20 from the second adsorption conveyor 60. it can.

  The electrode inspection apparatus 100 includes a dropping mechanism (disposing air nozzles 140 and 150) that causes the electrode 20 to drop into the disposal box 90 by applying a force from above to the electrodes 20 conveyed by the second suction conveyor 60. In addition. With such a configuration, the electrode 20 can be dropped into the disposal box 90 without stopping the suction of the second suction conveyor 60.

  Moreover, since both sides can be inspected without turning over the electrode 20 as described above, it is possible to prevent powder falling off when the electrode is turned over, thereby improving yield, improving electrode capacity, and improving safety. You can also. In addition, since the inspection can be easily performed as described above, it is possible to obtain the effects of improving the acceleration of electrode conveyance, reducing the equipment cost, and shortening the equipment length.

  As mentioned above, although several embodiment of this invention was described, this invention is not limited to the said embodiment.

  For example, in the above-described embodiment, the cleaner is provided in both the first suction conveyor 30 and the second suction conveyor 60, but it is sufficient that the cleaner is provided in at least one of them. For example, the foreign material is more likely to adhere to the other surface than the one surface of the electrode 20 due to the cutting mode in the cutting device 200 or due to the difference between the positive electrode and the negative electrode. It may be difficult to adhere. In such a case, what is necessary is just to provide in any one of the 1st suction conveyor 30 and the 2nd suction conveyor 60. FIG.

  Further, the arrangement of each component shown in FIG. 3 is an example, and the arrangement may be changed as long as there is no problem in function. For example, the second suction conveyor 60 may be disposed upstream of the first suction conveyor 30.

  Moreover, in the above-mentioned embodiment, although the dropping mechanism was an air nozzle, another structure may be sufficient. It is as follows when the structure of the 2nd adsorption conveyor 60 of the above-mentioned embodiment is explained in full detail. The second suction conveyor 60 includes a frame as a conveyor, an endless transport belt 161 that transports the electrode 20, and a driving roller and a driven roller that are disposed at both ends of the frame and support the transport belt 161 in a circulatory manner. A basic structure as a conveyor such as a roller 162 is provided. In addition, in order to adsorb the electrode 20, there are provided a plurality of suction holes having a small diameter penetrating the transport belt, and a suction box 163 provided inside the transport belt and having an opening on the transport surface side. The suction box 163 is connected to a vacuum pump or a blower separately provided by a pipe line, thereby sucking air from the suction hole and the opening and allowing the electrode 20 to be sucked on the transport surface side. Here, in contrast to the above-described configuration, for example, as shown in FIG. 7, a plurality of suction boxes 163 can be arranged in series inside one conveyor belt 161. And the pipe 20 for attracting | sucking air from each suction box is provided separately, and the electrode 20 can be dropped in the disposal box 90 by turning off the negative pressure only in the suction box 163 before the disposal box 90. .

  Furthermore, in the said embodiment, although the electrical storage apparatus 1 is a lithium ion secondary battery, this invention is not restricted especially to a lithium ion secondary battery, For example, other secondary batteries, such as a nickel hydride battery, an electric double layer The present invention can also be applied to stacking electrodes in a power storage device such as a capacitor or a lithium ion capacitor.

  DESCRIPTION OF SYMBOLS 30 ... 1st adsorption | suction conveyor, 60 ... 2nd adsorption conveyor, 50 ... 1st test | inspection part, 80 ... 2nd test | inspection part, 40, 70 ... Cleaner, 90 ... Waste box, 100 ... Electrode inspection apparatus, 140 , 150 ... Waste air nozzle (drop mechanism).

Claims (3)

An electrode inspection apparatus for inspecting an electrode,
A first adsorption conveyor that adsorbs the electrodes from below and conveys the electrodes;
A first inspection unit that inspects the electrode conveyed by the first suction conveyor from above;
A second suction conveyor for sucking the electrodes from above and transporting the electrodes;
A second inspection unit that inspects the electrode conveyed by the second suction conveyor from below;
An electrode inspection apparatus comprising: a cleaner that is provided on at least one of the first suction conveyor and the second suction conveyor and removes foreign matter from the surface of the electrode.   The electrode inspection apparatus according to claim 1, further comprising a disposal box provided at a midway position of the second suction conveyor and discarding the electrode.   The electrode inspection apparatus according to claim 2, further comprising a dropping mechanism that drops the electrode onto the waste box by applying a force from above to the electrode conveyed by the second suction conveyor.

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