JP6720516B2 - Electrode cutting device and electrode inspection method - Google Patents

Electrode cutting device and electrode inspection method Download PDF

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JP6720516B2
JP6720516B2 JP2015243171A JP2015243171A JP6720516B2 JP 6720516 B2 JP6720516 B2 JP 6720516B2 JP 2015243171 A JP2015243171 A JP 2015243171A JP 2015243171 A JP2015243171 A JP 2015243171A JP 6720516 B2 JP6720516 B2 JP 6720516B2
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寛恭 西原
寛恭 西原
真也 浅井
真也 浅井
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Toyota Industries Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Description

本発明は、電極切断装置及び電極検査方法に関する。 The present invention relates to an electrode cutting device and an electrode inspection method.

従来、リチウムイオン二次電池等の、シート状の電極を積層させてなる積層型二次電池が知られている。このような積層型二次電池の製造工程においては、最終製品段階での不具合の発生を防ぐために、積層型二次電池を組み立てる前に個々の電極（以下「個片電極」）について各種検査が実行される。このような各種検査のうちの一つとして、個片電極の表面の画像検査が挙げられる。 Conventionally, a laminated secondary battery such as a lithium ion secondary battery in which sheet-shaped electrodes are laminated is known. In the manufacturing process of such a stacked secondary battery, various inspections are performed on individual electrodes (hereinafter referred to as "individual electrodes") before assembling the stacked secondary battery in order to prevent problems from occurring in the final product stage. To be executed. One of such various inspections is image inspection of the surface of the individual electrode.

例えば、特許文献１には、アライメントステージを備えた極板積載装置が記載されている。この極板積載装置では、ベルトコンベアによりアライメントステージ上に移送された正極又は負極の極板は、上方に配置されたカメラにより撮影される。撮影データに基づいて、極板の表面状態が確認されると共にアライメントステージ上での極板の位置が検出される。そして、アライメントステージの移動による極板の位置合わせが行われた後、移載アームにより、正極及び負極の積層が行われる。 For example, Patent Document 1 describes an electrode plate loading device including an alignment stage. In this electrode plate loading apparatus, the positive or negative electrode plate transferred onto the alignment stage by the belt conveyor is photographed by the camera arranged above. Based on the image data, the surface condition of the electrode plate is confirmed and the position of the electrode plate on the alignment stage is detected. Then, after the electrode plates are aligned by the movement of the alignment stage, the transfer arm stacks the positive electrode and the negative electrode.

特開２０１２−１７４３８８号公報JP 2012-174388 A

特許文献１に記載の技術は、極板積層装置に関するものであるが、極板が積層装置に至る直前の搬送経路上で極板の検査を行う場合にも、同様にカメラによる撮影が行われることになる。例えば図７に示すように、所定の搬送方向に移動する搬送ベルト１００の搬送面１００ａ上に載置されて搬送される個片電極１１０について考える。このような場合、搬送面１００ａ上の所定位置に配置したカメラの撮像範囲に各個片電極１１０が収まるようにするためには、個片電極１１０間の位置ずれ（位置のばらつき）を予め考慮し、個片電極１１０のサイズよりも大きい撮像範囲Ｃを設定する必要がある。これは、例えば電極が複数の搬送装置を経て搬送される過程において、電極の位置ずれの発生を避けられないことに起因する。 The technology described in Patent Document 1 relates to an electrode plate laminating apparatus, but when the electrode plate is inspected on the transport path immediately before the electrode plate reaches the laminating apparatus, the image is similarly taken by the camera. It will be. For example, as shown in FIG. 7, consider an individual electrode 110 that is placed and transported on the transport surface 100a of the transport belt 100 that moves in a predetermined transport direction. In such a case, in order to allow each individual electrode 110 to fit within the imaging range of the camera arranged at a predetermined position on the transport surface 100a, the positional deviation (variation in position) between the individual electrodes 110 is considered in advance. It is necessary to set the imaging range C larger than the size of the individual electrode 110. This is because, for example, the displacement of the electrodes cannot be avoided in the process in which the electrodes are transported through a plurality of transport devices.

しかし、個片電極１１０のサイズよりも大きい撮像範囲Ｃを設定した場合には、個片電極１１０のサイズに合った大きさの撮像範囲を設定する場合と比較して、表面検査のために必要となる個片電極１１０部分に対応する画素数が減ってしまう。これは、画像検査の精度低下の原因となる。一方、個片電極１１０のサイズに合った大きさの撮像範囲を設定するために、カメラによる撮像位置よりも搬送方向上流側に個片電極１１０を整列させる機構を導入することは、設備の大型化や設備コストの増大に繋がるといった問題がある。 However, when the imaging range C that is larger than the size of the individual electrode 110 is set, it is necessary for the surface inspection as compared with the case where the imaging range of the size that matches the size of the individual electrode 110 is set. Therefore, the number of pixels corresponding to the individual electrode 110 portion is reduced. This causes a decrease in the accuracy of image inspection. On the other hand, in order to set an imaging range of a size suitable for the size of the individual electrode 110, it is not necessary to install a mechanism for aligning the individual electrode 110 on the upstream side of the image capturing position by the camera in the transport direction. There is a problem that it will lead to increase in equipment cost and equipment cost.

そこで、本発明は、個片電極の画像検査の精度を容易に向上させることができる電極切断装置及び電極検査方法を提供することを目的とする。 Therefore, an object of the present invention is to provide an electrode cutting device and an electrode inspection method capable of easily improving the accuracy of image inspection of individual electrodes.

本発明の一態様に係る電極切断装置は、長尺の帯状電極の一方側の表面に当接して帯状電極を支持する第１搬送面を有し、第１搬送面を搬送方向に移動させることにより帯状電極を搬送方向に搬送する第１搬送部と、第１搬送部によって搬送中の帯状電極を切断することにより、帯状電極を個片電極に個片化する切断部と、切断部よりも搬送方向下流側において第１搬送面に対向するように配置され、搬送方向に搬送される個片電極の他方側の表面の画像を撮像する第１撮像部と、を備える。 An electrode cutting device according to an aspect of the present invention includes a first transport surface that abuts one surface of a long strip electrode to support the strip electrode, and moves the first transport surface in a transport direction. The first transport unit that transports the strip-shaped electrode in the transport direction by using the cutting unit, and the cutting unit that cuts the strip-shaped electrode that is being transported by the first transport unit to separate the strip-shaped electrode into individual electrodes; A first image pickup unit that is arranged so as to face the first transport surface on the downstream side in the transport direction and that captures an image of the other surface of the individual electrode transported in the transport direction.

この電極切断装置では、帯状電極の一方側の表面が第１搬送面に当接した状態で搬送される最中に、切断部が帯状電極を切断して個片電極に個片化し、第１撮像部が当該個片電極の他方側の表面の画像を撮像する。すなわち、帯状電極の切断と個片電極の他方側の表面の画像の取得とが、同一の第１搬送部による搬送過程で実行される。このように、切断部及び第１撮像部を配置することにより、個片電極の位置ずれが少ない状態で当該個片電極の表面画像を精度良く取得することができる。すなわち、搬送される個片電極を整列させるための特別な処理を実行することなく、個片電極の表面画像を精度良く取得することができる。従って、上記電極切断装置によれば、個片電極の画像検査の精度を容易に向上させることができる。 In this electrode cutting device, the cutting portion cuts the strip-shaped electrode into individual electrodes during transportation while the surface on one side of the strip-shaped electrode is in contact with the first transport surface. The imaging unit captures an image of the other surface of the individual electrode. That is, the cutting of the strip electrode and the acquisition of the image of the surface on the other side of the individual electrode are performed in the same carrying process by the first carrying unit. As described above, by disposing the cutting unit and the first imaging unit, the surface image of the individual electrode can be acquired with high accuracy while the positional displacement of the individual electrode is small. That is, it is possible to accurately acquire the surface image of the individual electrode without performing a special process for aligning the individual electrodes to be conveyed. Therefore, according to the above-mentioned electrode cutting device, it is possible to easily improve the accuracy of the image inspection of the individual electrodes.

上記電極切断装置では、第１搬送部は、帯状電極及び個片電極を第１搬送面に吸着させる第１吸着部を有してもよい。 In the above electrode cutting device, the first transport unit may have a first suction unit that suctions the strip electrode and the individual electrode on the first transport surface.

この構成によれば、帯状電極及び当該帯状電極から個片化された個片電極を第１搬送面に対して適切に位置決めすることができる。これにより、切断部の切断動作による個片電極の位置ずれを極小化でき、個片電極の表面画像をより精度良く取得することができる。その結果、個片電極の画像検査の精度をより向上させることができる。 According to this structure, the strip electrode and the individual electrode separated from the strip electrode can be appropriately positioned with respect to the first transport surface. As a result, the positional deviation of the individual electrodes due to the cutting operation of the cutting portion can be minimized, and the surface image of the individual electrodes can be acquired more accurately. As a result, the accuracy of the image inspection of the individual electrodes can be further improved.

上記電極切断装置は、搬送方向上流側の端部が第１搬送面の搬送方向下流側の端部に対向するように第１搬送面と並設され、個片電極の他方側の表面に当接する第２搬送面と、個片電極を第２搬送面に吸着させる第２吸着部と、を有し、第２搬送面を搬送方向に移動させることにより個片電極を搬送方向に搬送する第２搬送部と、第２搬送面に対向するように配置され、搬送方向に搬送される個片電極の一方側の表面の画像を撮像する第２撮像部と、を更に備えてもよい。 The electrode cutting device is arranged in parallel with the first carrying surface such that the end on the upstream side in the carrying direction faces the end on the downstream side in the carrying direction of the first carrying surface, and contacts the other surface of the individual electrode. A second transport surface that is in contact with the second transport surface, and a second suction unit that attracts the individual electrode to the second transport surface, and transports the individual electrode in the transport direction by moving the second transport surface in the transport direction. It may further include two transport units and a second image capturing unit that is disposed so as to face the second transport surface and captures an image of the surface of one side of the individual electrode that is transported in the transport direction.

この構成によれば、個片電極は、第１搬送面の搬送方向下流側の端部と第２搬送面の搬送方向上流側の端部とが互いに対向する位置で、第１搬送部から第２搬送部へと受け渡される。この際、個片電極が第１搬送面上に支持された状態で、第２搬送面が当該個片電極の他方側の表面を吸着するので、第１搬送部から第２搬送部への個片電極の受け渡しが、当該個片電極の位置ずれが少ない状態で実行される。その結果、第２搬送面に対向するように配置された第２撮像部によって、個片電極の一方側の表面の画像を精度良く取得できる。以上の構成によれば、第１撮像部及び第２撮像部により取得された個片電極の一方側及び他方側の表面の画像に基づいて、個片電極の両面の画像検査を容易且つ精度良く実行することができる。 According to this configuration, the individual electrode is arranged such that the end of the first transport surface on the downstream side in the transport direction and the end of the second transport surface on the upstream side in the transport direction face each other, and 2 Handed over to the transport section. At this time, in the state where the individual electrode is supported on the first transport surface, the second transport surface adsorbs the other surface of the individual electrode. The delivery of one electrode is performed in a state where the position displacement of the individual electrode is small. As a result, the image of the one-side surface of the individual electrode can be accurately acquired by the second imaging unit arranged so as to face the second transport surface. According to the above configuration, based on the images of the surfaces of the individual electrodes on one side and the other side acquired by the first imaging unit and the second imaging unit, the image inspection of both surfaces of the individual electrodes can be performed easily and accurately. Can be executed.

本発明の一態様に係る電極検査方法は、長尺の帯状電極を第１搬送部に供給する供給工程と、第１搬送部によって搬送中の帯状電極を切断することにより、帯状電極を個片電極に個片化する切断工程と、切断工程において切断された個片電極の表面の画像を撮像する検査工程と、検査工程における撮像が完了した個片電極を、第１搬送部から当該第１搬送部の後段の第２搬送部に移載する移載工程と、を含む。 An electrode inspection method according to one aspect of the present invention includes a step of supplying a long strip-shaped electrode to a first transport unit, and cutting the strip-shaped electrode being transported by the first transport unit to separate the strip-shaped electrode into individual pieces. The cutting step of dividing the electrode into individual pieces, the inspection step of capturing an image of the surface of the individual electrode cut in the cutting step, and the individual electrode of which the image pickup is completed in the inspection step And a transfer step of transferring the second transfer unit to the subsequent stage of the transfer unit.

この電極検査方法では、帯状電極を個片電極に個片化する切断工程と個片電極の表面の画像を撮像する検査工程とが、個片電極が第１搬送部から後段の第２搬送部に移載される前に（すなわち、同一の第１搬送部による搬送過程で）実行される。このように、切断工程及び検査工程を実行することにより、個片電極の位置ずれが少ない状態で当該個片電極の表面画像を精度良く取得することができる。すなわち、搬送される個片電極を整列させるための特別な処理を実行することなく、個片電極の表面画像を精度良く取得することができる。従って、上記電極検査方法によれば、個片電極の画像検査の精度を容易に向上させることができる。 In this electrode inspection method, the cutting step of dividing the strip electrode into individual electrodes and the inspection step of capturing an image of the surface of the individual electrode are performed by the individual electrode from the first transport section to the second transport section in the subsequent stage. Before being transferred to (i.e., in the course of being transported by the same first transport unit). By thus performing the cutting process and the inspection process, it is possible to accurately acquire the surface image of the individual electrode in a state in which the positional displacement of the individual electrode is small. That is, it is possible to accurately acquire the surface image of the individual electrode without performing a special process for aligning the individual electrodes to be conveyed. Therefore, according to the above-mentioned electrode inspection method, it is possible to easily improve the accuracy of the image inspection of the individual electrodes.

本発明によれば、個片電極の画像検査の精度を容易に向上させることができる電極切断装置及び電極検査方法を提供することができる。 According to the present invention, it is possible to provide an electrode cutting device and an electrode inspection method capable of easily improving the accuracy of image inspection of individual electrodes.

本発明の一実施形態に係る電極切断装置の全体構成を模式的に示す図である。It is a figure which shows typically the whole structure of the electrode cutting device which concerns on one Embodiment of this invention. 第１搬送部の搬送面を示す平面図である。It is a top view which shows the conveyance surface of a 1st conveyance part. 図１のIII−III線に沿った帯状電極の断面図である。FIG. 3 is a sectional view of the strip electrode taken along line III-III in FIG. 1. 図１に示す第１搬送部の搬送面上の領域を上方から見た平面図である。It is the top view which looked at the area|region on the conveyance surface of the 1st conveyance part shown in FIG. 1 from the upper part. 図１に示す第２搬送部の搬送面上の領域を下方から見た平面図である。It is the top view which looked at the area|region on the conveyance surface of the 2nd conveyance part shown in FIG. 1 from the lower part. 変形例に係る電極切断装置を示す図である。It is a figure which shows the electrode cutting device which concerns on a modification. 比較例に係る画像検査において設定される撮像範囲を示す図である。It is a figure which shows the imaging range set in the image inspection which concerns on a comparative example.

以下、図面を参照しながら、本発明の実施形態について詳細に説明する。なお、図面において同一要素には同一符号を付し、重複する説明は省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same elements will be denoted by the same reference symbols, without redundant description.

図１は、本実施形態に係る電極切断装置の全体構成を模式的に示す図である。図１に示す電極切断装置１は、リチウムイオン二次電池等の蓄電装置の製造システムに組み込まれる装置である。具体的には、電極切断装置１は、帯状電極１０を搬送しながら、当該帯状電極１０を予め定められた電極形状に切断することにより個片電極１５に個片化し、当該個片電極１５の表面の画像を画像検査のために撮像する。個片電極１５の例としては、例えば電極組立体を構成する正極又は負極が挙げられる。 FIG. 1 is a diagram schematically showing the overall configuration of the electrode cutting device according to the present embodiment. The electrode cutting device 1 shown in FIG. 1 is a device incorporated in a manufacturing system for a power storage device such as a lithium ion secondary battery. Specifically, the electrode cutting device 1 cuts the strip-shaped electrode 10 into a predetermined electrode shape while transporting the strip-shaped electrode 10 into individual electrodes 15, and separates the individual electrodes 15 from each other. An image of the surface is taken for image inspection. Examples of the individual electrode 15 include a positive electrode or a negative electrode that constitutes an electrode assembly.

正極は、例えばアルミニウム箔からなる矩形の金属箔の両面に正極活物質層が形成されてなる。正極活物質層は、正極活物質とバインダとを含んで形成される。正極活物質としては、例えば複合酸化物、金属リチウム、硫黄等が挙げられる。複合酸化物には、例えばマンガン、ニッケル、コバルト及びアルミニウムの少なくとも１つと、リチウムとが含まれる。正極の一縁部には、正極端子との接続に用いられるタブが形成される。 The positive electrode is formed by forming a positive electrode active material layer on both sides of a rectangular metal foil made of, for example, an aluminum foil. The positive electrode active material layer is formed including a positive electrode active material and a binder. Examples of the positive electrode active material include complex oxides, metallic lithium, sulfur and the like. The composite oxide contains, for example, at least one of manganese, nickel, cobalt, and aluminum, and lithium. A tab used for connection with the positive electrode terminal is formed at one edge of the positive electrode.

一方、負極は、例えば銅箔からなる金属箔の両面に負極活物質層が形成されてなる。負極活物質層は、負極活物質とバインダとを含んで形成される。負極活物質としては、例えば黒鉛、高配向性グラファイト、メソカーボンマイクロビーズ、ハードカーボン、ソフトカーボン等のカーボン、リチウム、ナトリウム等のアルカリ金属、金属化合物、ＳｉＯｘ（０．５≦ｘ≦１．５）等の金属酸化物、ホウ素添加炭素等が挙げられる。バインダは、例えば、ポリフッ化ビニリデン、ポリテトラフルオロエチレン、フッ素ゴム等の含フッ素樹脂、ポリプロピレン、ポリエチレン等の熱可塑性樹脂、ポリイミド、ポリアミドイミド等のイミド系樹脂、又はアルコキシシリル基含有樹脂であってよい。負極の一縁部には、負極端子の位置に対応してタブが形成される。正極のタブと負極のタブとは、正極と負極とを重ねた場合に互いに重ならない位置に形成される。 On the other hand, the negative electrode has a negative electrode active material layer formed on both sides of a metal foil made of, for example, a copper foil. The negative electrode active material layer is formed including a negative electrode active material and a binder. Examples of the negative electrode active material include graphite, highly oriented graphite, carbon such as mesocarbon microbeads, hard carbon and soft carbon, alkali metals such as lithium and sodium, metal compounds, SiOx (0.5≦x≦1.5). ) And other metal oxides, and boron-added carbon. The binder is, for example, polyvinylidene fluoride, polytetrafluoroethylene, fluorine-containing resin such as fluororubber, thermoplastic resin such as polypropylene and polyethylene, polyimide, imide resin such as polyamideimide, or alkoxysilyl group-containing resin, Good. A tab is formed on one edge of the negative electrode so as to correspond to the position of the negative electrode terminal. The tab of the positive electrode and the tab of the negative electrode are formed at positions where they do not overlap each other when the positive electrode and the negative electrode are stacked.

図１に示すように、電極切断装置１は、第１搬送部２、切断部３、第１撮像部４、第２搬送部５、第２撮像部６、及び第３搬送部７を含んで構成される。図１の例では、電極切断装置１は、水平方向に沿った搬送方向（Ｘ軸方向）に帯状電極１０を搬送しながら個片電極１５に個片化し、個片電極１５の鉛直方向（Ｚ軸方向）上側（他方側）の表面及び鉛直方向下側（一方側）の表面の画像を画像検査のために取得するように構成されている。なお、本実施形態では、帯状電極１０は上述した正極を作成するための母材であり、個片電極１５は正極である場合を例として説明する。 As shown in FIG. 1, the electrode cutting device 1 includes a first carrying unit 2, a cutting unit 3, a first imaging unit 4, a second carrying unit 5, a second imaging unit 6, and a third carrying unit 7. Composed. In the example of FIG. 1, the electrode cutting device 1 separates the strip electrodes 10 into individual electrodes 15 while transporting the strip electrodes 10 in the transport direction along the horizontal direction (X-axis direction), and separates the individual electrodes 15 in the vertical direction (Z It is configured to acquire images of the surface on the upper side (the other side) in the axial direction and the surface on the lower side (the one side) in the vertical direction for image inspection. In this embodiment, the case where the strip electrode 10 is a base material for forming the positive electrode described above and the individual electrode 15 is a positive electrode will be described as an example.

第１搬送部２は、搬送方向に互いに離間して配置されたローラ対２１，２１と、当該ローラ対２１，２１に巻架された無端状の搬送ベルト２２と、を有する。ローラ対２１，２１が回転すると、搬送ベルト２２は連れ回りする。図１の例では、ローラ対２１，２１が図示しない駆動部によって回転駆動力を付与され、時計回りに回転することによって、搬送ベルト２２は、時計回りに循環する。 The 1st conveyance part 2 has the roller pair 21 and 21 arrange|positioned mutually mutually spaced apart, and the endless conveyance belt 22 wound by the said roller pair 21 and 21. When the roller pairs 21 and 21 rotate, the conveyor belt 22 rotates together. In the example of FIG. 1, the roller pair 21 and 21 is given a rotational driving force by a driving unit (not shown) and rotates clockwise, whereby the conveyor belt 22 circulates clockwise.

第１搬送部２は、長尺の帯状電極１０の下面（一方側の表面）１０ｂに当接して帯状電極１０を支持する搬送面（第１搬送面）２２ａを有する。具体的には、ローラ対２１，２１によって循環させられる搬送ベルト２２の搬送方向に移動する部分の上面が、搬送面２２ａとして機能する。第１搬送部２は、ローラ対２１，２１の回転によって搬送ベルト２２を循環させ、搬送面２２ａを搬送方向に移動させることにより、帯状電極１０を所定の搬送速度で搬送方向に搬送する。 The 1st conveyance part 2 has the conveyance surface (1st conveyance surface) 22a which contacts the lower surface (one surface) 10b of the elongate strip electrode 10, and supports the strip electrode 10. Specifically, the upper surface of the portion of the conveyor belt 22 circulated by the roller pairs 21 and 21 that moves in the conveying direction functions as the conveyor surface 22a. The first transport unit 2 transports the strip electrode 10 in the transport direction at a predetermined transport speed by circulating the transport belt 22 by rotating the roller pairs 21 and 21 and moving the transport surface 22a in the transport direction.

図２に示すように、搬送ベルト２２は、外側表面から内側表面にかけて貫通する複数の貫通孔２２ｂを有するスチールベルトである。複数の貫通孔２２ｂは、搬送ベルト２２の長手方向（搬送方向と同じＸ軸方向）及び幅方向（Ｘ軸方向及びＺ軸方向に直交するＹ軸方向）のそれぞれで等間隔に設けられた断面円形の通気孔である。図２の例では、搬送ベルト２２の幅方向に、４つの貫通孔２２ｂが配置されている。ただし、搬送ベルト２２は、スチールベルト以外でもよい。また、貫通孔２２ｂの大きさ、形状、個数はこの例に限られない。また、貫通孔２２ｂのピッチは、等間隔でなくてもよい。特に、貫通孔２２ｂの配置については、貫通孔２２ｂは、帯状電極１０又は個片電極１５が重なる領域にのみ設けられてもよい。 As shown in FIG. 2, the conveyor belt 22 is a steel belt having a plurality of through holes 22b penetrating from the outer surface to the inner surface. The plurality of through holes 22b are cross sections provided at equal intervals in the longitudinal direction (the same X-axis direction as the conveying direction) and the width direction (Y-axis direction orthogonal to the X-axis direction and the Z-axis direction) of the conveyor belt 22. It is a circular vent. In the example of FIG. 2, four through holes 22b are arranged in the width direction of the conveyor belt 22. However, the conveyor belt 22 may be other than the steel belt. Further, the size, shape, and number of the through holes 22b are not limited to this example. The pitch of the through holes 22b does not have to be equal. In particular, regarding the arrangement of the through holes 22b, the through holes 22b may be provided only in the region where the strip electrodes 10 or the individual electrodes 15 overlap.

搬送ベルト２２の内側であって搬送面２２ａの下方の部分には、吸着部（第１吸着部）２３が設けられている。吸着部２３は、例えば、搬送面２２ａ上の空間に貫通孔２２ｂを介して連通する閉空間を形成するダクトと、当該ダクト内の空間を負圧にするバキュープポンプや負圧ファン等の所定の減圧手段とによって構成される。吸着部２３は、所定の減圧手段によってダクト内の空間を負圧にすることにより、搬送面２２ａ上に載置される被搬送物（すなわち、帯状電極１０及び後述する切断部３によって個片化された個片電極１５）を搬送面２２ａに吸着させる。これにより、帯状電極１０及び個片電極１５が搬送面２２ａに位置決めされ、帯状電極１０及び個片電極１５の両方の位置ずれの発生が抑制される。 A suction unit (first suction unit) 23 is provided inside the transport belt 22 and below the transport surface 22a. The suction unit 23 is, for example, a duct that forms a closed space that communicates with the space on the transport surface 22a via the through hole 22b, and a predetermined vacuum pump, negative pressure fan, or the like that makes the space in the duct a negative pressure. And a decompression means. The suction unit 23 reduces the pressure inside the duct to a negative pressure by a predetermined depressurizing unit, so that the object to be transferred placed on the transfer surface 22a (that is, individualized by the strip electrode 10 and the cutting unit 3 described later). The separated individual electrode 15) is attracted to the transport surface 22a. As a result, the strip electrode 10 and the individual electrode 15 are positioned on the transport surface 22a, and the displacement of both the strip electrode 10 and the individual electrode 15 is suppressed.

図３に示すように、帯状電極１０は、個片電極１５（本実施形態では上述の通り正極）の材料となる長尺の金属箔１１の両面に予め正極活物質層１２，１３が塗工された母材である。正極活物質層１２は、金属箔１１の上面１１ａに塗工された層である。正極活物質層１２の上面１２ａは、搬送面２２ａ上において鉛直上方を向いて露出する面であり、帯状電極１０の上面１０ａに相当する。一方、正極活物質層１３は、金属箔１１の下面１１ｂに塗工された層である。正極活物質層１３の下面１３ａは、鉛直下方を向いて搬送面２２ａに支持される面であり、帯状電極１０の下面１０ｂに相当する。 As shown in FIG. 3, in the strip electrode 10, the positive electrode active material layers 12 and 13 are coated in advance on both surfaces of a long metal foil 11 which is a material of the individual electrode 15 (the positive electrode as described above in this embodiment). It is a base material. The positive electrode active material layer 12 is a layer coated on the upper surface 11 a of the metal foil 11. The upper surface 12a of the positive electrode active material layer 12 is a surface exposed vertically upward on the transport surface 22a, and corresponds to the upper surface 10a of the strip electrode 10. On the other hand, the positive electrode active material layer 13 is a layer coated on the lower surface 11b of the metal foil 11. The lower surface 13a of the positive electrode active material layer 13 faces vertically downward and is supported by the transport surface 22a, and corresponds to the lower surface 10b of the strip electrode 10.

図３及び図４に示すように、帯状電極１０において個片電極１５のタブＴ及びタブＴ側の縁部に対応する部分（すなわち帯状電極１０が後述する切断部３によって打ち抜かれることによって個片電極１５のタブＴ及びタブＴ側の縁部が形成される部分）には、正極活物質層１２，１３は塗工されておらず、金属箔１１が露出した状態となっている。帯状電極１０は、例えばロール状に巻かれて所定のリールにセットされており、当該リールから第１搬送部２に供給される。図４に示すように、第１搬送部２に供給される帯状電極１０は、当該帯状電極１０の長手方向が搬送方向に平行になるように、搬送面２２ａ上の予め定められた幅位置（Ｙ軸方向における予め定められた位置）に載置される。 As shown in FIGS. 3 and 4, a portion of the strip electrode 10 corresponding to the tab T of the individual electrode 15 and an edge portion on the side of the tab T (that is, the strip electrode 10 is punched by a cutting portion 3 described later to separate the individual electrode 15). The positive electrode active material layers 12 and 13 are not coated on the tab T of the electrode 15 and the edge portion on the tab T side), and the metal foil 11 is exposed. The strip electrode 10 is wound, for example, in a roll shape and set on a predetermined reel, and is supplied from the reel to the first transport unit 2. As shown in FIG. 4, the strip electrode 10 supplied to the first transport section 2 has a predetermined width position (on the transport surface 22a) such that the longitudinal direction of the strip electrode 10 is parallel to the transport direction. It is placed at a predetermined position in the Y-axis direction).

切断部３は、第１搬送部２によって搬送中の帯状電極１０を切断することにより、帯状電極１０を個片電極１５に個片化する加工装置である。本実施形態では一例として、切断部３は、レーザＬを帯状電極１０に照射することにより帯状電極１０の切断加工を実行する装置である。ただし、帯状電極１０の切断加工は、レーザによる切断に限られず、例えば金型を用いた打ち抜き加工等であってもよい。 The cutting unit 3 is a processing device that cuts the strip-shaped electrode 10 being transported by the first transport unit 2 to separate the strip-shaped electrode 10 into individual electrodes 15. In the present embodiment, as an example, the cutting unit 3 is a device that performs a cutting process on the strip electrode 10 by irradiating the strip electrode 10 with the laser L. However, the cutting process of the strip electrode 10 is not limited to the cutting by the laser, and may be a punching process using a die, for example.

切断部３は、搬送面２２ａの上方の所定の移動可能範囲内において、Ｘ軸方向及びＹ軸方向の各々に移動可能に構成されている。図４に示すように、切断部３は、予めプログラムされた所定の移動パターンでＸ軸方向及びＹ軸方向に移動することにより、レーザＬの照射位置Ｐを移動させる。これにより、切断部３は、帯状電極１０を所定の切断パターンで切断し、個片電極１５を得る。 The cutting unit 3 is configured to be movable in each of the X-axis direction and the Y-axis direction within a predetermined movable range above the transport surface 22a. As shown in FIG. 4, the cutting unit 3 moves the irradiation position P of the laser L by moving in the X-axis direction and the Y-axis direction in a predetermined movement pattern programmed in advance. Thereby, the cutting unit 3 cuts the strip electrode 10 in a predetermined cutting pattern to obtain the individual electrode 15.

より具体的には、切断部３は、第１搬送部２の搬送速度と等速度でＸ軸方向に移動しつつ、所定の速度でＹ軸方向に移動することにより、帯状電極１０の幅方向に沿って帯状電極１０を切断することができる。また、切断部３は、Ｙ軸方向における所定の位置にレーザＬの照射位置Ｐを固定することにより、帯状電極１０の長手方向に沿って帯状電極１０を切断することができる。従って、切断部３は、例えば、個片電極１５の形状及び第１搬送部２の搬送速度等に応じて予め決定される動作パターンに基づいてレーザＬの照射位置Ｐを移動させることにより、帯状電極１０から個片電極１５を切り抜くことができる（図４参照）。また、切断部３は、１つの個片電極１５を切り抜く際の動作パターンを繰り返し実行することにより、図４に示すように、複数の個片電極１５が連続して整列するように切断加工を実行する。 More specifically, the cutting unit 3 moves in the Y-axis direction at a predetermined speed while moving in the X-axis direction at the same speed as the transfer speed of the first transfer unit 2, so that the width direction of the strip electrode 10 is increased. The strip electrode 10 can be cut along the line. Further, the cutting unit 3 can cut the strip electrode 10 along the longitudinal direction of the strip electrode 10 by fixing the irradiation position P of the laser L at a predetermined position in the Y-axis direction. Therefore, the cutting unit 3 moves the irradiation position P of the laser L based on an operation pattern that is determined in advance according to the shape of the individual electrode 15 and the transfer speed of the first transfer unit 2, for example. The individual electrode 15 can be cut out from the electrode 10 (see FIG. 4). In addition, the cutting unit 3 repeatedly performs an operation pattern when cutting out one individual electrode 15, thereby performing a cutting process so that a plurality of individual electrodes 15 are continuously aligned as shown in FIG. Execute.

第１撮像部４は、切断部３よりも搬送方向下流側において搬送面２２ａに対向するように配置され、搬送方向に搬送される個片電極１５の上面１５ａ（他方側の表面）の画像を撮像する。ここで、個片電極１５の上面１５ａとは、個片電極１５を構成する金属箔１１の上面１１ａ及び正極活物質層１２の上面１２ａのうち鉛直上方に露出する部分である。 The first imaging unit 4 is arranged so as to face the transport surface 22a on the downstream side of the cutting unit 3 in the transport direction, and displays an image of the upper surface 15a (the surface on the other side) of the individual electrode 15 transported in the transport direction. Take an image. Here, the upper surface 15a of the individual electrode 15 is a portion of the upper surface 11a of the metal foil 11 forming the individual electrode 15 and the upper surface 12a of the positive electrode active material layer 12 that are exposed vertically upward.

第１撮像部４は、例えば、切断部３よりも搬送方向下流側の所定位置において、レンズ部分が搬送面２２ａに対向するように固定されたカメラである。第１撮像部４は、帯状電極１０が搬送面２２ａ上に載置される幅位置及び個片電極１５の幅（搬送方向における長さ）等のパラメータ情報を事前に取得している。第１撮像部４は、これらのパラメータ情報に基づいて、個片電極１５のサイズに合った大きさの撮像範囲Ｒ１の画像を撮像するように予め設定されている。また、第１撮像部４は、例えば第１搬送部２の搬送速度や切断部３による切断動作が開始された時点等の情報に基づいて、切断部３によって個片化された個片電極１５が撮像範囲Ｒ１に丁度収まるタイミングを把握する。そして、第１撮像部４は、このようにして把握されたタイミングで撮像範囲Ｒ１の画像を撮像することにより、第１搬送部２によって順次搬送される個片電極１５の上面１５ａの画像を得ることができる。 The first imaging unit 4 is, for example, a camera fixed at a predetermined position downstream of the cutting unit 3 in the transport direction such that the lens portion faces the transport surface 22a. The first imaging unit 4 acquires in advance parameter information such as the width position where the strip electrode 10 is placed on the transport surface 22a and the width of the individual electrode 15 (length in the transport direction). The first imaging unit 4 is set in advance so as to capture an image of the imaging range R1 having a size matching the size of the individual electrode 15, based on the parameter information. In addition, the first imaging unit 4 separates the individual electrodes 15 by the cutting unit 3 based on information such as the transport speed of the first transport unit 2 and the time when the cutting operation by the cutting unit 3 is started. Grasps the timing when is exactly within the imaging range R1. Then, the first imaging unit 4 captures the image of the imaging range R1 at the timing thus grasped to obtain the image of the upper surface 15a of the individual electrode 15 sequentially transported by the first transport unit 2. be able to.

第１搬送部２により搬送される個片電極１５は、後述する第２搬送部５に受け渡される。一方、帯状電極１０のうち個片電極１５を形成しない領域部分（本実施形態では、金属箔１１の一部）は、図示しない巻取機構によって巻き取り回収され、第２搬送部５には受け渡されないようになっている。 The individual electrode 15 transported by the first transport unit 2 is delivered to the second transport unit 5 described later. On the other hand, a region portion (a part of the metal foil 11 in the present embodiment) of the strip electrode 10 where the individual electrode 15 is not formed is wound and collected by a winding mechanism (not shown) and received by the second transport unit 5. It is supposed not to be handed over.

第２搬送部５は、搬送方向に互いに離間して配置されたローラ対５１，５１と、当該ローラ対５１，５１に巻架された無端状の搬送ベルト５２と、を有する。ローラ対５１，５１が回転すると、搬送ベルト５２は連れ回りする。図１の例では、ローラ対５１，５１が図示しない駆動部によって回転駆動力を付与され、反時計回りに回転することによって、搬送ベルト５２は、反時計回りに循環する。 The second transport unit 5 includes roller pairs 51 and 51 that are spaced apart from each other in the transport direction, and an endless transport belt 52 that is wound around the roller pairs 51 and 51. When the roller pairs 51, 51 rotate, the conveyor belt 52 rotates together. In the example of FIG. 1, the roller pair 51, 51 is given a rotational driving force by a driving unit (not shown) and rotates counterclockwise, so that the conveyor belt 52 circulates counterclockwise.

第２搬送部５は、搬送方向上流側の端部５２ｃが第１搬送部２の搬送面２２ａの搬送方向下流側の端部２２ｃに対向するように搬送面２２ａと並設される搬送面（第２搬送面）５２ａを有する。具体的には、ローラ対５１，５１によって循環させられる搬送ベルト５２の搬送方向に移動する部分の下面が、搬送面５２ａとして機能する。第２搬送部５は、ローラ対５１，５１の回転によって搬送ベルト５２を循環させ、搬送面５２ａを搬送方向に移動させることにより、第１搬送部２から受け渡された個片電極１５を所定の搬送速度で搬送方向に搬送する（第１搬送部２から第２搬送部５への個片電極１５の受け渡しについては後述する）。 The second transport unit 5 is arranged in parallel with the transport surface 22a such that the upstream end 52c in the transport direction opposes the downstream end 22c in the transport direction of the transport surface 22a of the first transport unit 2 ( The second transport surface) 52a. Specifically, the lower surface of the portion of the conveyor belt 52 that is circulated by the roller pairs 51 and 51 and moves in the conveying direction functions as the conveyor surface 52a. The second transport unit 5 circulates the transport belt 52 by rotating the pair of rollers 51, 51 and moves the transport surface 52a in the transport direction, so that the individual electrode 15 delivered from the first transport unit 2 is predetermined. The transfer is performed in the transfer direction at the transfer speed of (the transfer of the individual electrode 15 from the first transfer unit 2 to the second transfer unit 5 will be described later).

搬送ベルト５２は、搬送ベルト２２と同様に、外側表面から内側表面にかけて貫通する複数の貫通孔５２ｂを有するスチールベルトである。搬送ベルト５２の内側であって搬送面５２ａの上方の部分には、吸着部（第２吸着部）５３が設けられている。吸着部５３は、吸着部２３と同様に、例えば、搬送面５２ａの下方の空間に貫通孔５２ｂを介して連通する閉空間を形成するダクトと、当該ダクト内の空間を負圧にするバキュープポンプや負圧ファン等の所定の減圧手段とによって構成される。吸着部５３は、所定の減圧手段によってダクト内の空間を負圧にすることにより、搬送面５２ａに当接する被搬送物（すなわち、個片電極１５）を搬送面５２ａに吸着させる。 Like the conveyor belt 22, the conveyor belt 52 is a steel belt having a plurality of through holes 52b penetrating from the outer surface to the inner surface. A suction portion (second suction portion) 53 is provided inside the transport belt 52 and above the transport surface 52a. Like the suction unit 23, the suction unit 53 includes, for example, a duct that forms a closed space that communicates with a space below the transport surface 52a via a through hole 52b, and a vacuum that makes the space in the duct a negative pressure. It is constituted by a predetermined pressure reducing means such as a pump or a negative pressure fan. The suction unit 53 suctions the transported object (that is, the individual electrode 15) that abuts on the transport surface 52a to the transport surface 52a by making the space inside the duct negative by a predetermined pressure reducing unit.

搬送面５２ａの搬送方向上流側の端部５２ｃと搬送面２２ａの搬送方向下流側の端部２２ｃとは、鉛直方向における両側から個片電極１５の上面１５ａ及び下面１５ｂを挟み込むように配置されている。ここで、個片電極１５の下面１５ｂとは、個片電極１５を構成する金属箔１１の下面１１ｂ及び正極活物質層１３の下面１３ａのうち鉛直下方に露出する部分である。従って、搬送面５２ａの端部５２ｃと搬送面２２ａの端部２２ｃとが互いに対向する部分においては、個片電極１５は、搬送面２２ａ及び搬送面５２ａの両方に吸着される。 An end 52c of the transfer surface 52a on the upstream side in the transfer direction and an end 22c of the transfer surface 22a on the downstream side in the transfer direction are arranged so as to sandwich the upper surface 15a and the lower surface 15b of the individual electrode 15 from both sides in the vertical direction. There is. Here, the lower surface 15b of the individual electrode 15 is a portion of the lower surface 11b of the metal foil 11 and the lower surface 13a of the positive electrode active material layer 13 forming the individual electrode 15 that are exposed vertically downward. Therefore, at the portion where the end portion 52c of the transport surface 52a and the end portion 22c of the transport surface 22a face each other, the individual electrode 15 is adsorbed to both the transport surface 22a and the transport surface 52a.

第２搬送部５によって個片電極１５が搬送方向に更に搬送され、個片電極１５の下面１５ｂが搬送面２２ａ上から離れると、個片電極１５は、搬送面５２ａに上面１５ａを吸着されながら、下面１５ｂを鉛直下方に露出した状態で、搬送方向に搬送される。このように、個片電極１５が第１搬送部２の搬送面２２ａ上に支持された状態で、搬送面５２ａが当該個片電極１５の上面１５ａに当接して吸着するので、第１搬送部２から第２搬送部５への個片電極１５の受け渡しが、当該個片電極１５の位置ずれが少ない状態で実行される。 When the individual electrode 15 is further transported in the transport direction by the second transport unit 5 and the lower surface 15b of the individual electrode 15 is separated from the transport surface 22a, the individual electrode 15 is attracted to the transport surface 52a by the upper surface 15a. , The lower surface 15b is exposed vertically downward, and is conveyed in the conveying direction. In this way, since the individual electrode 15 is supported on the transport surface 22a of the first transport unit 2, the transport surface 52a contacts the upper surface 15a of the individual electrode 15 and adsorbs it, so that the first transport unit The transfer of the individual electrode 15 from the second transfer unit 5 to the second transfer unit 5 is performed in a state in which the positional displacement of the individual electrode 15 is small.

第２撮像部６は、搬送面５２ａに対向するように配置され、搬送方向に搬送される個片電極１５の下面１５ｂ（一方側の表面）の画像を撮像する。 The second imaging unit 6 is arranged so as to face the transport surface 52a and captures an image of the lower surface 15b (the surface on one side) of the individual electrode 15 transported in the transport direction.

第２撮像部６は、例えば、搬送面５２ａの端部５２ｃと搬送面２２ａの端部２２ｃとが互いに対向する部分よりも搬送方向下流側の所定位置において、レンズ部分が搬送面５２ａに対向するように固定されたカメラである。第２撮像部６は、個片電極１５が搬送面５２ａに吸着される幅位置及び個片電極１５の幅等のパラメータ情報を事前に取得している。図５に示すように、第２撮像部６は、これらのパラメータ情報に基づいて、個片電極１５のサイズに合った大きさの撮像範囲Ｒ２の画像を撮像するように予め設定されている。また、第２撮像部６は、例えば、第１撮像部４による撮像タイミング、個片電極１５の搬送速度（第１搬送部２及び第２搬送部５に共通の搬送速度）、撮像範囲Ｒ１から撮像範囲Ｒ２までの距離等の情報に基づいて、個片電極１５が撮像範囲Ｒ２に丁度収まるタイミングを把握する。そして、第２撮像部６は、このようにして把握されたタイミングで撮像範囲Ｒ２の画像を撮像することにより、第２搬送部５によって順次搬送される個片電極１５の下面１５ｂの画像を得ることができる。 In the second imaging unit 6, for example, the lens portion faces the transport surface 52a at a predetermined position on the downstream side in the transport direction with respect to a portion where the end 52c of the transport surface 52a and the end 22c of the transport surface 22a face each other. It is a fixed camera. The second imaging unit 6 acquires in advance the parameter information such as the width position of the individual electrode 15 adsorbed on the transport surface 52a and the width of the individual electrode 15. As shown in FIG. 5, the second imaging unit 6 is preset based on the parameter information so as to capture an image of the imaging range R2 having a size matching the size of the individual electrode 15. In addition, the second imaging unit 6 determines, for example, the imaging timing of the first imaging unit 4, the transportation speed of the individual electrode 15 (the transportation speed common to the first transportation unit 2 and the second transportation unit 5), and the imaging range R1. Based on the information such as the distance to the imaging range R2, the timing when the individual electrode 15 fits within the imaging range R2 is grasped. Then, the second imaging unit 6 captures the image of the imaging range R2 at the timing thus grasped, and obtains the image of the lower surface 15b of the individual electrode 15 sequentially transported by the second transport unit 5. be able to.

第２搬送部５によって搬送される個片電極１５は、第２搬送部５の搬送方向下流側の端部５２ｄにおいて、第２搬送部５の搬送方向下流側に配置された第３搬送部７に受け渡され、次工程へと搬送される。第３搬送部７は、搬送方向に互いに離間して配置されたローラ対７１，７１と、当該ローラ対７１，７１に巻架された無端状の搬送ベルト７２と、を有する。ローラ対７１，７１が回転すると、搬送ベルト７２は連れ回りする。図１の例では、ローラ対７１，７１が図示しない駆動部によって回転駆動力を付与され、時計回りに回転することによって、搬送ベルト７２は、時計回りに循環する。 The individual electrode 15 transported by the second transport unit 5 has the third transport unit 7 arranged on the downstream side in the transport direction of the second transport unit 5 at the end 52d on the downstream side in the transport direction of the second transport unit 5. It is delivered to the next process. The third transport unit 7 includes roller pairs 71, 71 arranged apart from each other in the transport direction, and an endless transport belt 72 wound around the roller pairs 71, 71. When the roller pairs 71, 71 rotate, the conveyor belt 72 rotates together. In the example of FIG. 1, the roller pair 71, 71 is given a rotational driving force by a driving unit (not shown) and rotates clockwise, whereby the conveyor belt 72 circulates clockwise.

第３搬送部７は、搬送方向上流側の端部７２ｂが第２搬送部５の搬送面５２ａの搬送方向下流側の端部５２ｄに対向するように搬送面５２ａと並設される搬送面７２ａを有する。具体的には、ローラ対７１，７１によって循環させられる搬送ベルト７２の搬送方向に移動する部分の上面が、搬送面７２ａとして機能する。第３搬送部７は、ローラ対７１，７１の回転によって搬送ベルト７２を循環させ、搬送面７２ａを搬送方向に移動させることにより、第２搬送部５から受け渡される個片電極１５を所定の搬送速度で搬送方向に搬送する。これにより、個片電極１５は、上面１５ａが搬送面５２ａに吸着されて下面１５ｂが鉛直下方に露出する状態から、下面１５ｂが搬送面７２ａに支持されて上面１５ａが露出する状態へと変化する。 The third transport unit 7 is arranged in parallel with the transport surface 52a such that the end 72b on the upstream side in the transport direction faces the end 52d on the downstream side in the transport direction of the transport surface 52a of the second transport unit 5. Have. Specifically, the upper surface of the portion of the conveyor belt 72, which is circulated by the roller pairs 71, 71 and moves in the conveying direction, functions as the conveyor surface 72a. The third transport unit 7 circulates the transport belt 72 by rotating the pair of rollers 71, 71 and moves the transport surface 72a in the transport direction, so that the individual electrode 15 delivered from the second transport unit 5 is moved to a predetermined position. Transport in the transport direction at the transport speed. As a result, the individual electrode 15 changes from a state in which the upper surface 15a is attracted to the transport surface 52a and the lower surface 15b is exposed vertically downward to a state in which the lower surface 15b is supported by the transport surface 72a and the upper surface 15a is exposed. ..

なお、第１撮像部４及び第２撮像部６によって撮像された個片電極１５の上面１５ａ及び下面１５ｂの表面画像に対する画像検査によって不良と判定された個片電極１５は、例えば第３搬送部７上の所定位置（或いは第３搬送部７よりも下流側の搬送装置上）で取り除かれてもよい。これにより、不良と判定された個片電極１５が後続の製造工程（例えば積層工程）において電極組立体の一部として混入してしまうことを防ぎ、最終製品段階での不具合の発生率を下げることができる。 The individual electrodes 15 determined to be defective by the image inspection of the surface images of the upper surface 15a and the lower surface 15b of the individual electrodes 15 imaged by the first imaging unit 4 and the second imaging unit 6 are, for example, the third transport unit. It may be removed at a predetermined position on 7 (or on the transport device on the downstream side of the third transport unit 7). This prevents the individual electrodes 15 determined to be defective from being mixed as a part of the electrode assembly in the subsequent manufacturing process (for example, a laminating process), and reduces the occurrence rate of defects in the final product stage. You can

以上述べた電極切断装置１では、帯状電極１０の下面１０ｂが搬送面２２ａに当接した状態で搬送される最中に、切断部３が帯状電極１０を切断して個片電極１５に個片化し、第１撮像部４が当該個片電極１５の上面１５ａの画像を撮像する。すなわち、帯状電極１０の切断と個片電極１５の上面１５ａの画像の取得とが、同一の第１搬送部２による搬送過程で実行される。このように、切断部３及び第１撮像部４を配置することにより、個片電極１５の位置ずれが少ない状態で当該個片電極１５の表面画像（上面１５ａの画像）を精度良く取得することができる。すなわち、搬送される個片電極１５を整列させるための特別な処理を実行することなく、個片電極１５の表面画像を精度良く取得することができる。 In the electrode cutting apparatus 1 described above, the cutting unit 3 cuts the strip-shaped electrode 10 into individual electrodes 15 while the lower surface 10b of the strip-shaped electrode 10 is being conveyed in contact with the conveyance surface 22a. Then, the first imaging unit 4 captures an image of the upper surface 15a of the individual electrode 15. That is, the cutting of the strip electrode 10 and the acquisition of the image of the upper surface 15a of the individual electrode 15 are performed in the same carrying process by the first carrying unit 2. By arranging the cutting unit 3 and the first imaging unit 4 in this way, a surface image (image of the upper surface 15a) of the individual electrode 15 can be acquired with high accuracy while the positional displacement of the individual electrode 15 is small. You can That is, the surface image of the individual electrode 15 can be accurately obtained without performing a special process for aligning the individual electrodes 15 to be conveyed.

具体的には、第１撮像部４による撮像範囲を個片電極１５の位置ずれを考慮して余裕を持った大きさに設定する必要がなく、個片電極１５のサイズに合った撮像範囲Ｒ１とすることができる。ここで、「個片電極１５のサイズに合った撮像範囲Ｒ１」とは、位置ずれを考慮した余裕幅が少なく、なるべく個片電極１５の全体がぎりぎり収まるような大きさの撮像範囲のことを意味する。これにより、検査対象となる個片電極１５の上面１５ａ部分の画素数が多く、検査対象となる領域の解像度が高い画像を得ることが可能となる。従って、電極切断装置１によれば、個片電極１５の画像検査の精度を容易に向上させることができる。 Specifically, it is not necessary to set the image pickup range of the first image pickup unit 4 to a size having a margin in consideration of the position shift of the individual electrode 15, and the image pickup range R1 suitable for the size of the individual electrode 15 Can be Here, the “imaging range R1 suitable for the size of the individual electrode 15 ”means an imaging range of a size in which the margin width considering the positional deviation is small and the entire individual electrode 15 is as small as possible. means. This makes it possible to obtain an image in which the number of pixels on the upper surface 15a of the individual electrode 15 to be inspected is large and the resolution of the region to be inspected is high. Therefore, according to the electrode cutting device 1, the accuracy of the image inspection of the individual electrode 15 can be easily improved.

また、電極切断装置１では、第１搬送部２は、帯状電極１０及び個片電極１５を搬送面２２ａに吸着させる吸着部２３を有している。この構成により、帯状電極１０及び当該帯状電極１０から個片化された個片電極１５を搬送面２２ａに対して適切に位置決めすることができる。これにより、切断部３の切断動作による個片電極１５の位置ずれを極小化でき、個片電極１５の表面画像（上面１５ａの画像）をより精度良く取得することができる。その結果、個片電極１５の画像検査の精度をより向上させることができる。 In addition, in the electrode cutting device 1, the first transport unit 2 has the suction unit 23 that attracts the strip electrode 10 and the individual electrode 15 to the transport surface 22a. With this configuration, it is possible to appropriately position the strip electrode 10 and the individual electrodes 15 that are individualized from the strip electrode 10 with respect to the transport surface 22a. As a result, the positional deviation of the individual electrode 15 due to the cutting operation of the cutting unit 3 can be minimized, and the surface image (image of the upper surface 15a) of the individual electrode 15 can be acquired more accurately. As a result, the accuracy of the image inspection of the individual electrode 15 can be further improved.

ただし、第１搬送部２は、必ずしも吸着部２３を有する必要はなく、第１搬送部２は、帯状電極１０及び個片電極１５を吸着搬送しなくてもよい。このような場合であっても、帯状電極１０の切断と個片電極１５の上面１５ａの画像の取得とが同一の第１搬送部２による搬送過程で実行されることにより、個片電極１５の位置ずれの影響が少ない状態で個片電極１５の表面画像を取得することができる。 However, the first transport unit 2 does not necessarily have to have the suction unit 23, and the first transport unit 2 does not have to suction and transport the strip electrode 10 and the individual electrode 15. Even in such a case, the cutting of the strip electrode 10 and the acquisition of the image of the upper surface 15a of the individual electrode 15 are performed in the same transport process by the first transport unit 2, so that the individual electrode 15 is cut. The surface image of the individual electrode 15 can be acquired in a state where the influence of the positional deviation is small.

また、電極切断装置１は、上述した構成の第２搬送部５及び第２撮像部６を更に備える。この構成により、個片電極１５は、搬送面２２ａの搬送方向下流側の端部２２ｃと搬送面５２ａの搬送方向上流側の端部５２ｃとが互いに対向する位置で、第１搬送部２から第２搬送部５へと受け渡される。この際、個片電極１５が第１搬送部２の搬送面２２ａ上に支持された状態で、搬送面５２ａが当該個片電極１５の上面１５ａを吸着するので、第１搬送部２から第２搬送部５への個片電極１５の受け渡しが、当該個片電極１５の位置ずれが少ない状態で実行される。その結果、搬送面５２ａに対向するように配置された第２撮像部６によって、個片電極１５の下面１５ｂの画像を精度良く取得できる。具体的には、第２撮像部６による撮像範囲を個片電極１５の位置ずれを考慮して余裕を持った大きさに設定する必要がなく、個片電極１５のサイズに合った撮像範囲Ｒ２とすることができる。これにより、検査対象となる個片電極１５の下面１５ｂ部分の画素数がなるべく多く、検査対象となる領域の解像度が高い画像を得ることが可能となる。以上の構成により、第１撮像部４及び第２撮像部６により取得された個片電極１５の上面１５ａ及び下面１５ｂの表面の画像に基づいて、個片電極１５の両面の画像検査を容易且つ精度良く実行することができる。 The electrode cutting device 1 further includes the second transport unit 5 and the second imaging unit 6 having the above-described configurations. With this configuration, the individual electrode 15 is separated from the first transport unit 2 at a position where the downstream end 22c of the transport surface 22a in the transport direction and the upstream end 52c of the transport surface 52a in the transport direction face each other. 2 Transferred to the transport unit 5. At this time, while the individual electrode 15 is supported on the transport surface 22a of the first transport unit 2, the transport surface 52a adsorbs the upper surface 15a of the individual electrode 15, so that the first transport unit 2 moves to the second transport unit 2 The delivery of the individual electrode 15 to the transport unit 5 is executed in a state where the positional displacement of the individual electrode 15 is small. As a result, the image of the lower surface 15b of the individual electrode 15 can be accurately obtained by the second imaging unit 6 arranged so as to face the transport surface 52a. Specifically, it is not necessary to set the image pickup range of the second image pickup unit 6 to a size having a margin in consideration of the position shift of the individual electrode 15, and the image pickup range R2 suitable for the size of the individual electrode 15 Can be As a result, it is possible to obtain an image in which the number of pixels in the lower surface 15b of the individual electrode 15 to be inspected is as large as possible and the resolution of the region to be inspected is high. With the above configuration, based on the images of the surfaces of the upper surface 15a and the lower surface 15b of the individual electrode 15 acquired by the first imaging unit 4 and the second imaging unit 6, the image inspection of both surfaces of the individual electrode 15 can be performed easily and easily. It can be executed accurately.

次に、上述した電極切断装置１の動作について、電極検査方法としての観点から説明する。まず、長尺の帯状電極１０が第１搬送部２に供給される（供給工程）。続いて、切断部３が、第１搬送部２によって搬送中の帯状電極１０を切断することにより、帯状電極１０を個片電極１５に個片化する（切断工程）。続いて、第１撮像部４が、切断工程において切断された個片電極１５の表面（本実施形態では、個片電極１５の上面１５ａ）の画像を撮像する（検査工程）。続いて、検査工程における撮像が完了した個片電極１５は、第１搬送部２から第１搬送部２の後段の第２搬送部５へと移載される（移載工程）。 Next, the operation of the above-described electrode cutting device 1 will be described from the viewpoint of an electrode inspection method. First, the long strip electrode 10 is supplied to the first transport unit 2 (supply step). Subsequently, the cutting unit 3 cuts the strip-shaped electrode 10 being conveyed by the first conveying unit 2 to separate the strip-shaped electrode 10 into individual electrodes 15 (cutting step). Subsequently, the first imaging unit 4 captures an image of the surface of the individual electrode 15 (the upper surface 15a of the individual electrode 15 in the present embodiment) cut in the cutting step (inspection step). Then, the individual electrode 15 for which the imaging in the inspection step is completed is transferred from the first transfer section 2 to the second transfer section 5 in the subsequent stage of the first transfer section 2 (transfer step).

上記電極検査方法では、帯状電極１０を個片電極１５に個片化する切断工程と個片電極１５の表面（上面１５ａ）の画像を撮像する検査工程とが、個片電極１５が第１搬送部２から後段の第２搬送部５に移載される前に（すなわち、同一の第１搬送部２による搬送過程で）実行される。このように、切断工程及び検査工程を実行することにより、個片電極１５の位置ずれが少ない状態で当該個片電極１５の表面画像を精度良く取得することができる。すなわち、搬送される個片電極１５を整列させるための特別な処理を実行することなく、個片電極１５の表面画像を精度良く取得することができる。従って、上記電極検査方法によれば、個片電極１５の画像検査の精度を容易に向上させることができる。 In the above-described electrode inspection method, the cutting process for dividing the strip electrode 10 into individual electrodes 15 and the inspection process for capturing an image of the surface (upper surface 15a) of the individual electrodes 15 are performed by the individual electrodes 15 for the first transfer. It is executed before being transferred from the unit 2 to the second transfer unit 5 in the subsequent stage (that is, in the transfer process by the same first transfer unit 2). In this way, by performing the cutting process and the inspection process, the surface image of the individual electrode 15 can be acquired with high accuracy while the positional displacement of the individual electrode 15 is small. That is, the surface image of the individual electrode 15 can be accurately obtained without performing a special process for aligning the individual electrodes 15 to be conveyed. Therefore, according to the above-mentioned electrode inspection method, it is possible to easily improve the accuracy of the image inspection of the individual electrode 15.

なお、本実施形態においては、その要旨を逸脱しない範囲で様々な変形が可能である。例えば、個片電極１５は、上述した正極及び負極以外に、タブを除いた部分が袋状のセパレータ内に収容された状態となっているセパレータ包み正極であってもよい。ここで、セパレータの形成材料としては、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）等のポリオレフィン系樹脂からなる多孔質フィルム、ポリプロピレン、ポリエチレンテレフタレート（ＰＥＴ）、メチルセルロース等からなる織布又は不織布等が例示される。 Note that various modifications can be made to the present embodiment without departing from the spirit of the invention. For example, the individual electrode 15 may be a separator-wrapped positive electrode in which the portion excluding the tab is housed in a bag-shaped separator, in addition to the positive electrode and the negative electrode described above. Here, examples of the material for forming the separator include a porous film made of a polyolefin resin such as polyethylene (PE) and polypropylene (PP), a woven fabric or a non-woven fabric made of polypropylene, polyethylene terephthalate (PET), methyl cellulose and the like. It

また、上記実施形態では、切断部３による切断手段をレーザ切断又は打ち抜き加工とする場合について模式的に説明したが、例えばレーザによる切断の場合、２台又はそれ以上の切断部により、帯状電極１０を切断してもよい。図６に、変形例に係る電極切断装置１００を示す。図６の（ａ）は、電極切断装置１００を模式的に示す平面図であり、図６の（ｂ）は、電極切断装置１００における上流側搬送部１０１及び下流側搬送部１０３の配置関係を示す平面図である。図６に示すように、電極切断装置１００は、上流側搬送部１０１と、上流側切断部１０２と、下流側搬送部（第１搬送部）１０３と、下流側切断部（切断部）１０４と、撮像部（第１撮像部）１０５と、を備える。 Further, in the above-described embodiment, the case where the cutting means by the cutting unit 3 is laser cutting or punching is schematically described. However, for example, in the case of laser cutting, the strip electrode 10 is formed by two or more cutting units. May be cut. FIG. 6 shows an electrode cutting device 100 according to a modified example. FIG. 6A is a plan view schematically showing the electrode cutting device 100, and FIG. 6B shows the positional relationship between the upstream side transport unit 101 and the downstream side transport unit 103 in the electrode cutting device 100. It is a top view shown. As shown in FIG. 6, the electrode cutting device 100 includes an upstream transport unit 101, an upstream cutting unit 102, a downstream transport unit (first transport unit) 103, and a downstream cutting unit (cutting unit) 104. And an imaging unit (first imaging unit) 105.

図６の（ｂ）に示すように、下流側搬送部１０３は、上流側搬送部１０１よりも搬送方向下流側に配置される。また、上流側搬送部１０１及び下流側搬送部１０３は、互いに幅方向において重複しないように配置される。一例として、上流側搬送部１０１及び下流側搬送部１０３はそれぞれ、帯状電極１０の幅方向における一部を支持しながら、帯状電極１０を搬送方向に搬送するベルト部材である。この例では、上流側搬送部１０１は、帯状電極１０の幅方向における中央部分を支持する。また、下流側搬送部１０３は、搬送方向に沿って並設された一対の搬送ベルト１０３Ａ，１０３Ｂによって、帯状電極１０の幅方向における両端部分を支持する。また、上流側搬送部１０１及び下流側搬送部１０３は、それぞれ帯状電極１０を吸着するための貫通孔１０１ａ，１０３ａを有する。 As shown in FIG. 6B, the downstream-side transport unit 103 is arranged downstream of the upstream-side transport unit 101 in the transport direction. Further, the upstream-side transport unit 101 and the downstream-side transport unit 103 are arranged so as not to overlap each other in the width direction. As an example, each of the upstream-side transport unit 101 and the downstream-side transport unit 103 is a belt member that transports the strip-shaped electrode 10 in the transport direction while supporting a part of the strip-shaped electrode 10 in the width direction. In this example, the upstream transport unit 101 supports the central portion of the strip electrode 10 in the width direction. Further, the downstream side transport unit 103 supports both end portions in the width direction of the strip electrode 10 by a pair of transport belts 103A and 103B arranged in parallel along the transport direction. In addition, the upstream-side transport unit 101 and the downstream-side transport unit 103 have through holes 101a and 103a for attracting the strip electrodes 10, respectively.

上流側切断部１０２は、上流側搬送部１０１によって支持されて搬送される帯状電極１０の両端部分（すなわち、平面視で上流側搬送部１０１と重ならない部分）の切断位置にレーザＬ１を照射することで、帯状電極１０を切断する。また、下流側切断部１０４は、下流側搬送部１０３によって支持されて搬送される帯状電極１０の中央部分（すなわち、平面視で下流側搬送部１０３と重ならない部分）の切断位置にレーザＬ２を照射することで、帯状電極１０を切断する。このように、まず上流側切断部１０２による切断が行われた後に下流側切断部１０４による切断が行われることで、個片電極１５が形成される。撮像部１０５は、下流側切断部１０４よりも搬送方向下流側において、下流側搬送部１０３の搬送面に対向するように配置され、個片電極１５のサイズに合った大きさの撮像範囲Ｒ３の画像を撮像するように予め設定されている。 The upstream cutting unit 102 irradiates the laser L<b>1 to the cutting position of both end portions of the strip electrode 10 supported and transported by the upstream transport unit 101 (that is, a portion that does not overlap the upstream transport unit 101 in plan view). Thus, the strip electrode 10 is cut. Further, the downstream cutting unit 104 places the laser L2 at the cutting position of the central portion (that is, the portion that does not overlap the downstream transportation unit 103 in plan view) of the strip electrode 10 supported and transported by the downstream transportation unit 103. By irradiation, the strip electrode 10 is cut. As described above, the individual electrode 15 is formed by first performing the cutting by the upstream cutting unit 102 and then performing the cutting by the downstream cutting unit 104. The image capturing unit 105 is arranged so as to face the transport surface of the downstream transport unit 103 on the downstream side in the transport direction with respect to the downstream cutting unit 104, and has an image capturing range R3 of a size that matches the size of the individual electrode 15. It is preset to capture an image.

以上述べた電極切断装置１００では、下流側切断部１０４が帯状電極１０を切断して個片電極１５に個片化し、撮像部１０５が当該個片電極１５の上面１５ａの画像を撮像する。すなわち、帯状電極１０の切断と個片電極１５の上面１５ａの画像の取得とが、同一の下流側搬送部１０３による搬送過程で実行される。このように、下流側切断部１０４及び撮像部１０５を配置することにより、個片電極１５の位置ずれが少ない状態で当該個片電極１５の表面画像（上面１５ａの画像）を精度良く取得することができる。すなわち、搬送される個片電極１５を整列させるための特別な処理を実行することなく、個片電極１５の表面画像を精度良く取得することができる。 In the electrode cutting device 100 described above, the downstream cutting unit 104 cuts the strip electrode 10 into individual electrodes 15, and the imaging unit 105 captures an image of the upper surface 15a of the individual electrodes 15. That is, the cutting of the strip electrode 10 and the acquisition of the image of the upper surface 15 a of the individual electrode 15 are performed in the same carrying process by the downstream carrying unit 103. By arranging the downstream side cutting unit 104 and the imaging unit 105 in this way, a surface image (image of the upper surface 15a) of the individual electrode 15 can be accurately obtained in a state in which the positional deviation of the individual electrode 15 is small. You can That is, the surface image of the individual electrode 15 can be accurately obtained without performing a special process for aligning the individual electrodes 15 to be conveyed.

また、個片電極１５がセパレータ包み正極である場合、それに対応する帯状電極１０は、等間隔に並べられた複数の正極の両面側にシート状のセパレータが重ねられ、個々の正極の周囲（或いは周囲の一部）において一対のセパレータ同士が溶着されたものとなる。この場合、切断部３による切断によって得られる個片電極１５は、上述したセパレータ包み電極となり、上述した構成の電極切断装置１によって、セパレータ包み電極の両面（すなわち、セパレータ表面）の画像検査を精度良く実行することができる。 When the individual electrode 15 is a separator-wrapped positive electrode, the strip-shaped electrode 10 corresponding to the individual electrode 15 has sheet-shaped separators stacked on both surface sides of a plurality of positive electrodes arranged at equal intervals to surround each individual positive electrode (or A pair of separators are welded to each other in a part of the periphery). In this case, the individual electrode 15 obtained by cutting by the cutting unit 3 becomes the above-described separator-wrapping electrode, and the electrode cutting device 1 having the above-described configuration accurately performs image inspection of both surfaces of the separator-wrapping electrode (that is, the separator surface). It can run well.

また、撮像部（第１撮像部４、第２撮像部６、又は撮像部１０５）の撮像範囲Ｒ１，Ｒ２，Ｒ３の上流側に電極の位置を検出するセンサ（例えばタブ位置を検出するセンサ）を設け、当該センサの検出結果に基づく演算により、撮像部による個片電極１５の撮像タイミングを求めてもよい。また、個片電極１５は、タブＴが設けられた部分、タブＴ側の縁部、活物質層等、様々なパーツに分かれており、特定のパーツ部分についてのみ画像検査を実施したい場合もあり得る。その場合には、上記実施形態のように個片電極１５のサイズに合った撮像範囲Ｒ１，Ｒ２，Ｒ３を設定する代わりに、検査対象のパーツ部分がなるべく大きく映るように撮像範囲を設定してもよい。上述した電極切断装置１又は電極切断装置１００によれば、個片電極１５の位置ずれが少ない状態（すなわち、予め想定される位置からのずれが少ない状態）で撮像部（第１撮像部４、第２撮像部６、又は撮像部１０５）による撮像を行うことができる。従って、検査対象のパーツ部分に該当する範囲のみを撮像範囲として設定し、当該パーツ部分の画像を精度良く取得することにより、当該パーツ部分の画像検査の精度を向上させることができる。 Further, a sensor (for example, a sensor that detects a tab position) that detects the position of the electrode on the upstream side of the imaging range R1, R2, R3 of the imaging unit (the first imaging unit 4, the second imaging unit 6, or the imaging unit 105). May be provided, and the image pickup timing of the individual electrode 15 by the image pickup unit may be obtained by calculation based on the detection result of the sensor. Further, the individual electrode 15 is divided into various parts such as a part provided with the tab T, an edge part on the tab T side, an active material layer, etc., and it may be desired to perform an image inspection only on a specific part part. obtain. In that case, instead of setting the imaging ranges R1, R2, and R3 that match the size of the individual electrode 15 as in the above-described embodiment, the imaging range is set so that the part part to be inspected appears as large as possible. Good. According to the electrode cutting device 1 or the electrode cutting device 100 described above, the image capturing unit (the first image capturing unit 4, the image capturing unit 4 in the state in which the displacement of the individual electrode 15 is small (that is, the displacement from the position assumed in advance is small). Imaging can be performed by the second imaging unit 6 or the imaging unit 105). Therefore, by setting only the range corresponding to the part part to be inspected as the imaging range and accurately acquiring the image of the part part, the accuracy of the image inspection of the part part can be improved.

１，１００…電極切断装置、２…第１搬送部、３…切断部、４…第１撮像部、５…第２搬送部、６…第２撮像部、７…第３搬送部、１０…帯状電極、１０ａ…上面、１０ｂ…下面（一方側の表面）、１５…個片電極、１５ａ…上面（他方側の表面）、１５ｂ…下面（一方側の表面）、２２ａ…搬送面（第１搬送面）、２２ｃ…搬送方向下流側の端部、２３…吸着部、５２ａ…搬送面（第２搬送面）、５２ｃ…搬送方向上流側の端部、５３…吸着部（第２吸着部）、１０３…下流側搬送部（第１搬送部）、１０４…下流側切断部（切断部）、１０５…撮像部（第１撮像部）。 1, 100... Electrode cutting device, 2... 1st conveyance part, 3... Cutting part, 4... 1st imaging part, 5... 2nd conveyance part, 6... 2nd imaging part, 7... 3rd conveyance part, 10... Strip-shaped electrodes, 10a... Top surface, 10b... Bottom surface (one side surface), 15... Single electrode, 15a... Top surface (other side surface), 15b... Bottom surface (one side surface), 22a... Conveying surface (first) Transport surface), 22c... End portion on the downstream side in the transport direction, 23... Suction portion, 52a... Transport surface (second transport surface), 52c... End portion on the upstream side in transport direction, 53... Suction portion (second suction portion) , 103... Downstream transport unit (first transport unit), 104... Downstream cutting unit (cutting unit), 105... Imaging unit (first imaging unit).

Claims (2)

長尺の帯状電極の一方側の表面に当接して前記帯状電極を支持する第１搬送面を有し、前記第１搬送面を搬送方向に移動させることにより前記帯状電極を前記搬送方向に搬送する第１搬送部と、
前記第１搬送部によって搬送中の前記帯状電極を切断することにより、前記帯状電極を個片電極に個片化する切断部と、
前記切断部よりも前記搬送方向下流側において前記第１搬送面に対向するように配置され、前記搬送方向に搬送される前記個片電極の他方側の表面の画像を撮像する第１撮像部と、
前記搬送方向上流側の端部が前記第１搬送面の前記搬送方向下流側の端部に対向するように前記第１搬送面と並設され、前記個片電極の前記他方側の表面に当接する第２搬送面と、前記個片電極を前記第２搬送面に吸着させる第２吸着部と、を有し、前記第２搬送面を前記搬送方向に移動させることにより前記個片電極を前記搬送方向に搬送する第２搬送部と、
前記第２搬送面に対向するように配置され、前記搬送方向に搬送される前記個片電極の前記一方側の表面の画像を撮像する第２撮像部と、を備える、電極切断装置。 It has a first transport surface that abuts one surface of a long strip electrode to support the strip electrode, and transports the strip electrode in the transport direction by moving the first transport surface in the transport direction. A first transport unit for
A cutting unit that cuts the strip-shaped electrode being transported by the first transport unit to separate the strip-shaped electrode into individual electrodes;
A first imaging unit that is arranged so as to face the first transport surface on the downstream side of the cutting unit in the transport direction, and captures an image of the other surface of the individual electrode that is transported in the transport direction. ,
The upstream end in the transport direction is arranged in parallel with the first transport surface so as to face the downstream end in the transport direction of the first transport surface, and contacts the surface of the individual electrode on the other side. A second transfer surface that is in contact with the second transfer surface; and a second suction portion that sucks the individual electrode onto the second transfer surface. The individual electrode is moved by moving the second transfer surface in the transfer direction. A second transport unit that transports in the transport direction,
An electrode cutting device, comprising: a second imaging unit that is arranged so as to face the second transport surface and that captures an image of the surface of the one side of the individual electrode that is transported in the transport direction. 前記第１搬送部は、前記帯状電極及び前記個片電極を前記第１搬送面に吸着させる第１吸着部を有する、請求項１に記載の電極切断装置。 The electrode cutting device according to claim 1, wherein the first transport unit has a first suction unit that suctions the strip electrodes and the individual electrodes onto the first transport surface.
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