JP2012089351A - Winding device - Google Patents

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JP2012089351A
JP2012089351A JP2010235033A JP2010235033A JP2012089351A JP 2012089351 A JP2012089351 A JP 2012089351A JP 2010235033 A JP2010235033 A JP 2010235033A JP 2010235033 A JP2010235033 A JP 2010235033A JP 2012089351 A JP2012089351 A JP 2012089351A
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electrode sheet
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conveyance
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JP5211135B2 (en
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Akihiro Mukai
明裕 向井
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CKD 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

PROBLEM TO BE SOLVED: To provide a winding device capable of improving productivity.SOLUTION: A winding device 30 comprises: tab welding devices 35 and 36 for welding tabs; detection sensors 33 and 34 for detecting predetermined positions on an electrode sheet; a correction mechanism 37 arranged between both tab welding devices 35 and 36; pinch rollers 38a and 38b arranged downstream of the second tab welding device 36; and a control unit 50 electrically connected to these components. The control unit 50 adjusts a conveyance amount of the electrode sheet by the pinch rollers 38a and 38b based on a result of detection by the second detection sensor 34, and adjusts an amount of correction by the correction mechanism 37 based on a result of detection by both detection sensors 33 and 34. Thereby, a second portion to be welded on the electrode sheet is positioned at a location of the second tab welding device 36, and a first portion to be welded is positioned at a location of the first tab welding device 35.

Description

本発明は、二次電池等に用いられる電極シートを巻回するための巻回装置に関するものである。   The present invention relates to a winding device for winding an electrode sheet used for a secondary battery or the like.

例えば、リチウムイオン電池等の二次電池は、正極活物質が塗布された正極シートと、負極活物質が塗布された負極シートとが、絶縁材からなるセパレータシートを介して重ね合わされた状態で巻回されて製造される。   For example, a secondary battery such as a lithium ion battery is wound in a state where a positive electrode sheet coated with a positive electrode active material and a negative electrode sheet coated with a negative electrode active material are overlapped via a separator sheet made of an insulating material. Rotated and manufactured.

正負両電極シートには、事前に又は電池素子製造時において、活物質未塗布部にタブが溶接されるとともに、そのタブを保護する保護テープが貼付される。   On both the positive and negative electrode sheets, a tab is welded to the active material uncoated portion in advance or at the time of manufacturing a battery element, and a protective tape for protecting the tab is affixed.

タブ溶接工程及びテープ貼付工程を行う際には、例えば電極シート上の活物質塗布部と未塗布部の境界部位をセンサにより検出し、当該境界部位を基準に電極シート上のタブ溶接部位やテープ貼付部位を所定位置に位置決めしていた（例えば、特許文献１参照）。   When performing the tab welding process and the tape application process, for example, the boundary part between the active material application part and the non-application part on the electrode sheet is detected by a sensor, and the tab welding part or tape on the electrode sheet is detected based on the boundary part. The affixing site was positioned at a predetermined position (for example, see Patent Document 1).

特開２００２−１１０１４８号公報JP 2002-110148 A

しかしながら、従来では、タブ溶接時の位置決めに加え、保護テープ貼付時においても再度、位置決めを行うといったように、複数の作業工程ごとに位置決めを行う必要があり、巻回装置の高速化ひいては生産性の向上を阻む要因となっていた。   However, conventionally, in addition to positioning at the time of tab welding, it is necessary to perform positioning for each of the plurality of work processes, such as positioning again at the time of applying the protective tape. It was a factor that hindered improvement.

勿論、上記課題は、タブ溶接時の位置決めと、保護テープ貼付時の位置決めとの関係に限らず、位置決めを要する複数の作業工程を有する構成において同様に生じるものである。   Of course, the above-mentioned problem is not limited to the relationship between the positioning at the time of tab welding and the positioning at the time of attaching the protective tape, and similarly occurs in a configuration having a plurality of work steps that require positioning.

本発明は、上記事情に鑑みてなされたものであり、生産性の向上を図ることのできる巻回装置を提供することを主たる目的の一つとしている。   This invention is made | formed in view of the said situation, and makes it one of the main objectives to provide the winding apparatus which can aim at the improvement of productivity.

以下、上記課題を解決するのに適した各手段につき項分けして説明する。なお、必要に応じて対応する手段に特有の作用効果を付記する。   Hereinafter, each means suitable for solving the above-described problem will be described separately. In addition, the effect specific to the means to respond | corresponds as needed is added.

手段１．所定間隔で電極材が塗布された帯状の電極シートに対し所定の作業を行った後、当該電極シートを所定の巻回手段により巻回する巻回装置であって、
前記電極シートを１ピッチずつ間欠搬送する搬送手段と、
前記電極シートの搬送停止中に、第１作業位置にて、前記電極シート１ピッチごとに有する第１被作業部位に対し第１作業を行う第１作業手段と、
前記電極シートの搬送停止中に、前記第１作業位置よりも下流側に位置する第２作業位置にて、前記電極シート１ピッチごとに有する第２被作業部位に対し第２作業を行う第２作業手段と、
前記第１作業位置よりも上流位置において、前記電極シート１ピッチごとに有する第１被検出部位を検出可能な第１検出手段と、
前記第２作業位置よりも上流位置において、前記電極シート１ピッチごとに有する第２被検出部位を検出可能な第２検出手段と、
前記第２検出手段の検出結果を基に、前記搬送手段による前記電極シートの搬送量を調整する搬送量制御手段と、
前記第１被作業部位の停止位置を補正可能な補正手段と、
前記第１検出手段及び前記第２検出手段の検出結果を基に、前記補正手段による補正量を調整する補正量制御手段とを備え、
前記第２被作業部位を前記第２作業位置に位置決めすると共に、前記第１被作業部位を前記第１作業位置に位置決めすることを特徴とする巻回装置。 Means 1. A winding device that performs a predetermined operation on a strip-shaped electrode sheet coated with an electrode material at a predetermined interval, and then winds the electrode sheet by a predetermined winding means,
Conveying means for intermittently conveying the electrode sheet pitch by pitch;
A first working means for performing a first work on a first work site at each first pitch of the electrode sheet at a first work position while the conveyance of the electrode sheet is stopped;
A second work is performed on the second work site for each pitch of the electrode sheet at a second work position located downstream of the first work position while the conveyance of the electrode sheet is stopped. Working means;
A first detection means capable of detecting a first detected portion having each pitch of the electrode sheet at a position upstream from the first work position;
A second detection means capable of detecting a second detected portion at every pitch of the electrode sheet at a position upstream from the second work position;
Based on the detection result of the second detection unit, a conveyance amount control unit that adjusts the conveyance amount of the electrode sheet by the conveyance unit;
Correction means capable of correcting the stop position of the first work site;
Correction amount control means for adjusting a correction amount by the correction means based on detection results of the first detection means and the second detection means,
A winding device, wherein the second work site is positioned at the second work position, and the first work site is positioned at the first work position.

上記手段１によれば、電極シートを１ピッチ分間欠搬送するに際し、第２検出手段の検出結果に基づき、搬送手段による電極シートの搬送量を調整することで、第２被作業部位を第２作業位置に位置決めすると共に、第１検出手段及び第２検出手段の検出結果を基に、補正手段による補正量を調整することで、第１被作業部位を第１作業位置に位置決めすることができる。つまり、第２作業位置への第２被作業部位の搬送及び位置決めと、第１作業位置への第１被作業部位の搬送及び位置決めを併せて行うことができる。さらに、所定の搬送停止期間中に複数箇所で複数の作業工程を同時に行うことができる。結果として、巻回装置の高速化ひいては生産性の向上を図ることができる。   According to the means 1, when the electrode sheet is intermittently conveyed by one pitch, the second work site is adjusted to the second position by adjusting the amount of the electrode sheet conveyed by the conveying means based on the detection result of the second detecting means. The first work site can be positioned at the first work position by positioning at the work position and adjusting the correction amount by the correction means based on the detection results of the first detection means and the second detection means. . That is, the conveyance and positioning of the second work site to the second work position and the transfer and positioning of the first work site to the first work position can be performed together. Furthermore, a plurality of work steps can be simultaneously performed at a plurality of locations during a predetermined conveyance stop period. As a result, it is possible to increase the speed of the winding device and thus improve the productivity.

手段２．前記電極シートの搬送中に前記第２検出手段によって前記第２被検出部位が検出された後、当該第２被検出部位が第２搬送量だけ搬送されて停止することにより、前記第２被作業部位が前記第２作業位置に位置決めされ、
前記電極シートの搬送中に前記第１検出手段によって前記第１被検出部位が検出された後、当該第１被検出部位が第１搬送量だけ搬送されて停止することにより、前記第１被作業部位が前記第１作業位置に位置決めされる構成であって、
前記電極シートの搬送開始から、前記第２検出手段によって次に前記第２被検出部位が検出されるまでの前記電極シートの搬送量を計測する第２計測手段と、
前記電極シートの搬送開始から、前記第１検出手段によって次に前記第１被検出部位が検出されるまでの前記電極シートの搬送量を計測する第１計測手段とを備え、
前記搬送量制御手段は、前記第２計測手段の計測結果を基に、前記搬送手段による前記電極シートの搬送量を調整し、
前記補正量制御手段は、前記第１計測手段及び前記第２計測手段の計測結果を基に、前記補正手段による補正量を調整することを特徴とする手段１に記載の巻回装置。 Mean 2. After the second detection part is detected by the second detection means during the conveyance of the electrode sheet, the second detection part is conveyed by a second conveyance amount and stopped, so that the second work is performed. A part is positioned at the second working position;
After the first detection part is detected by the first detection means during the conveyance of the electrode sheet, the first detection part is conveyed by a first conveyance amount and stopped, so that the first work is performed. A part is positioned at the first working position,
A second measuring unit that measures a conveyance amount of the electrode sheet from the start of conveyance of the electrode sheet until the second detection target is detected next by the second detection unit;
A first measuring unit that measures a conveyance amount of the electrode sheet from the start of conveyance of the electrode sheet until the first detection site is detected next by the first detection unit;
The conveyance amount control means adjusts the conveyance amount of the electrode sheet by the conveyance means based on the measurement result of the second measurement means,
2. The winding device according to claim 1, wherein the correction amount control unit adjusts a correction amount by the correction unit based on measurement results of the first measurement unit and the second measurement unit.

上記手段２によれば、電極シートの搬送中に、各検出手段により検出された検出結果を基に、当該搬送による電極シートの搬送量を調整することにより、当該搬送停止時に各被作業部位を各作業位置に位置決めすることができる。結果として、過去に取得した情報を基に補正等を行う構成に比べ、位置決め精度の向上を図ることができる。   According to the above means 2, during the conveyance of the electrode sheet, by adjusting the conveyance amount of the electrode sheet by the conveyance based on the detection result detected by each detection means, Each work position can be positioned. As a result, it is possible to improve the positioning accuracy as compared with a configuration in which correction or the like is performed based on information acquired in the past.

手段３．前記第１計測手段及び前記第２計測手段は、高速カウンタ（ハードウェアカウンタ）であることを特徴とする手段２に記載の巻回装置。   Means 3. The winding device according to claim 2, wherein the first measuring means and the second measuring means are high-speed counters (hardware counters).

従来、電極シートの搬送量は以下のように計測されていた。まず検出手段が電極シート上の被検出部位を検出すると、制御機器（ソフトウエア）がそれを認識した上で、当該制御機器が搬送ローラ等のエンコーダ値を読み込み、当該エンコーダ値を基に搬送量を算出する。そのため、ソフトウエアのスキャンタイムの遅れ等により、読み込まれたエンコーダ値がばらつき、算出された電極シートの搬送量に誤差が生じるおそれがあった。このため、従来では、被検出部位の検出を行うにあたり、電極シートを低速搬送させる等していた。   Conventionally, the conveyance amount of an electrode sheet has been measured as follows. First, when the detection means detects the detected part on the electrode sheet, the control device (software) recognizes it, and the control device reads the encoder value of the transport roller and the like, and the transport amount based on the encoder value Is calculated. For this reason, there is a possibility that the read encoder value varies due to a delay in the scan time of the software, and an error occurs in the calculated transport amount of the electrode sheet. For this reason, conventionally, the electrode sheet is transported at a low speed in detecting the detection site.

これに対し、上記手段３によれば、搬送ローラ等のエンコーダ値を高速カウンタで計数し、検出手段が被検出部位を検出した時点のエンコーダ値を事前に記憶（ラッチ）しておくことができる。結果として、制御機器（ソフトウエア）は、検出手段が被検出部位を検出した時点のタイムラグのない適切なエンコーダ値を基に、電極シートの搬送量を精度良く算出することができる。   On the other hand, according to the means 3, the encoder value of the conveying roller or the like can be counted by the high speed counter, and the encoder value at the time when the detecting means detects the detected portion can be stored (latched) in advance. . As a result, the control device (software) can accurately calculate the conveyance amount of the electrode sheet based on an appropriate encoder value without a time lag when the detection unit detects the detected portion.

また、被検出部位の検出を行うために電極シートを低速搬送させる等しなくともよいため、さらなる巻回装置の高速化ひいては生産性の向上を図ることができる。   In addition, since it is not necessary to convey the electrode sheet at a low speed in order to detect the detection site, it is possible to further increase the speed of the winding device and improve the productivity.

さらに、検出手段が被検出部位を検出した後、比較的短時間で電極シートの搬送を停止させることが可能となるため、上記手段２の作用効果をより確実なものとすることができる。   Furthermore, since it becomes possible to stop conveyance of an electrode sheet for a comparatively short time after a detection means detects a to-be-detected site | part, the effect of the said means 2 can be made more reliable.

手段４．前記補正手段は、前記電極シートの搬送方向と交差する所定方向に往復駆動して電極シートを迂回させる駆動ローラを備え、
前記補正量制御手段が、前記第１検出手段及び前記第２検出手段の検出結果を基に、前記駆動ローラを変位させることにより前記迂回量を変更して前記第１被作業部位の停止位置を補正することを特徴とする手段１乃至３のいずれかに記載の巻回装置。 Means 4. The correction means includes a driving roller that reciprocates in a predetermined direction intersecting the conveying direction of the electrode sheet to bypass the electrode sheet,
The correction amount control means changes the detour amount by displacing the drive roller based on the detection results of the first detection means and the second detection means, and sets the stop position of the first work site. The winding device according to any one of means 1 to 3, wherein correction is performed.

上記手段４によれば、第１被作業部位の停止位置と第２被作業部位の停止位置との差を吸収して、比較的簡単に第１被作業部位の停止位置を補正することができる。   According to the means 4, the difference between the stop position of the first work site and the stop position of the second work site can be absorbed, and the stop position of the first work site can be corrected relatively easily. .

手段５．前記第１作業手段並びにこれに対応する前記第１検出手段及び前記補正手段をそれぞれ複数箇所に備えたことを特徴とする手段１乃至４のいずれかに記載の巻回装置。   Means 5. The winding device according to any one of means 1 to 4, wherein the first working means and the first detecting means and the correcting means corresponding to the first working means are provided at a plurality of locations.

上記手段５によれば、３箇所以上の位置決めを併せて行うことができ、さらなる生産性の向上を図ることができる。   According to the means 5, it is possible to perform positioning at three or more locations, and further improve productivity.

巻回装置の構成を示す概略図である。It is the schematic which shows the structure of a winding apparatus. （ａ）は、電極シートの構成を示す平面模式図であり、（ｂ）は、電極シートの構成を示す側面模式図である。(A) is a plane schematic diagram which shows the structure of an electrode sheet, (b) is a side surface schematic diagram which shows the structure of an electrode sheet. タブ溶接時における電極シートの位置決め工程を説明するための模式図である。It is a schematic diagram for demonstrating the positioning process of the electrode sheet at the time of tab welding. タブ溶接時における電極シートの位置決め工程を説明するための模式図である。It is a schematic diagram for demonstrating the positioning process of the electrode sheet at the time of tab welding. タブ溶接時における電極シートの位置決め工程を説明するための模式図である。It is a schematic diagram for demonstrating the positioning process of the electrode sheet at the time of tab welding.

以下、一実施形態について図面を参照しつつ説明する。本実施形態の巻回装置は、リチウムイオン電池等を製造するにあたり用いられる正極シートや負極シートなどの電極シートの原反を製造するためのものである。   Hereinafter, an embodiment will be described with reference to the drawings. The winding apparatus of this embodiment is for manufacturing the raw material of electrode sheets, such as a positive electrode sheet and a negative electrode sheet, used in manufacturing a lithium ion battery.

まず、電極シートの構成について詳しく説明する。図２（ａ），（ｂ）に示すように、電極シート１には、予め一定の間隔で電極材としての活物質２１が塗布された金属シート２０が用いられる。具体的には、正極シートには例えばアルミニウム箔シートが用いられ、その表裏両面に一定の間隔で正極活物質が塗布されている。負極シートには例えば銅箔シートが用いられ、その表裏両面に一定の間隔で負極活物質が塗布されている。また、活物質未塗布部（電極材未塗布部）２２の所定位置には、タブＴｂが溶接されるとともに、当該タブＴｂ上に保護テープＴｐが貼付される。   First, the configuration of the electrode sheet will be described in detail. As shown in FIGS. 2A and 2B, a metal sheet 20 on which an active material 21 as an electrode material is applied in advance at regular intervals is used for the electrode sheet 1. Specifically, for example, an aluminum foil sheet is used as the positive electrode sheet, and the positive electrode active material is applied to both the front and back surfaces at regular intervals. For example, a copper foil sheet is used as the negative electrode sheet, and the negative electrode active material is applied to both the front and back surfaces at regular intervals. Further, a tab Tb is welded to a predetermined position of the active material uncoated portion (electrode material uncoated portion) 22 and a protective tape Tp is stuck on the tab Tb.

次に、巻回装置３０の概略について図１を参照して説明する。巻回装置３０の最上流側には、タブＴｂ等が取付けられる前の電極シート１がロール状に巻回された繰出しロール３１が回転可能に支持されている。繰出しロール３１は、後述するピンチローラ３８ａ，３８ｂの動作に合せて電極シート１を所定量ずつ繰り出す。   Next, an outline of the winding device 30 will be described with reference to FIG. On the uppermost stream side of the winding device 30, a feeding roll 31 around which the electrode sheet 1 before being attached with the tab Tb or the like is wound in a roll shape is rotatably supported. The feeding roll 31 feeds the electrode sheet 1 by a predetermined amount in accordance with operations of pinch rollers 38a and 38b described later.

繰出しロール３１から繰り出された電極シート１は、バッファ機構３２を介して第１検出手段としての第１検出センサ３３の下方位置に送られる。   The electrode sheet 1 fed from the feed roll 31 is sent to a position below the first detection sensor 33 as the first detection means via the buffer mechanism 32.

バッファ機構３２は、一対の従動ローラ３２ａ，３２ｂと、両ローラ３２ａ，３２ｂ間において上下方向に変位可能に設けられた段差ローラ３２ｃとを有し、繰出しロール３１による電極シート１の繰出し量と、後述するピンチローラ３８ａ，３８ｂによる電極シート１の繰出し量との差を吸収する役割を果たすとともに、電極シート１に対し張力を付与する機能を有する。   The buffer mechanism 32 includes a pair of driven rollers 32a and 32b, and a step roller 32c provided between the rollers 32a and 32b so as to be vertically displaceable. It plays a role of absorbing a difference from the feeding amount of the electrode sheet 1 by pinch rollers 38a and 38b, which will be described later, and has a function of applying tension to the electrode sheet 1.

一方、第１検出センサ３３は、搬送される電極シート１上の活物質塗布部（電極材塗布部）２１の上流側端部Ｄ、すなわち活物質塗布部２１から活物質未塗布部２２に切換る境界部位Ｄを検出可能に構成されている。   On the other hand, the first detection sensor 33 switches from the upstream end D of the active material application part (electrode material application part) 21 on the conveyed electrode sheet 1, that is, from the active material application part 21 to the active material non-application part 22. The boundary part D to be detected can be detected.

さらに、第１検出センサ３３から、ほぼ電極シート１の１ピッチ分下流側の位置には、第２検出手段としての第２検出センサ３４が設けられている。第２検出センサ３４も第１検出センサ３３と同様、電極シート１上の活物質塗布部２１の上流側端部Ｄを検出可能に構成されている。活物質塗布部２１の上流側端部Ｄが本実施形態における第１被検出部位及び第２被検出部位に相当する。   Furthermore, a second detection sensor 34 as a second detection means is provided at a position approximately one pitch downstream of the electrode sheet 1 from the first detection sensor 33. Similarly to the first detection sensor 33, the second detection sensor 34 is configured to be able to detect the upstream end D of the active material application unit 21 on the electrode sheet 1. The upstream end D of the active material application unit 21 corresponds to the first detected site and the second detected site in the present embodiment.

第１検出センサ３３及び第２検出センサ３４は、制御装置５０と電気的に接続されており、制御装置５０に対しその検出結果を出力する。制御装置５０は、各検出センサ３３，３４の検出結果等を基に後述するピンチローラ３８ａ，３８ｂや補正機構３７の駆動制御を行う。   The first detection sensor 33 and the second detection sensor 34 are electrically connected to the control device 50 and output the detection result to the control device 50. The control device 50 performs drive control of pinch rollers 38a and 38b and a correction mechanism 37, which will be described later, based on the detection results of the detection sensors 33 and 34, and the like.

第２検出センサ３４の下流側には、第１タブ溶接手段（第１作業手段）としての第１タブ溶接装置３５が配置されている。第１タブ溶接装置３５は、電極シート１上の活物質未塗布部２２に対しタブＴｂの所定部位Ｔｂａ（図２参照）を溶接するものである。本実施形態では、タブ溶接を超音波溶接により行う構成を採用している。勿論、これに限らず、他の溶接方法を採用してもよい。第１タブ溶接装置３５が行う溶接作業が本実施形態における第１作業に相当する。   A first tab welding device 35 as first tab welding means (first working means) is disposed downstream of the second detection sensor 34. The first tab welding device 35 welds a predetermined portion Tba (see FIG. 2) of the tab Tb to the active material uncoated portion 22 on the electrode sheet 1. In this embodiment, the structure which performs tab welding by ultrasonic welding is employ | adopted. Of course, not limited to this, other welding methods may be adopted. The welding operation performed by the first tab welding device 35 corresponds to the first operation in the present embodiment.

さらに、第１タブ溶接装置３５から、ほぼ電極シート１の１ピッチ分下流側の位置には、第２タブ溶接手段（第２作業手段）としての第２タブ溶接装置３６が配置されている。第２タブ溶接装置３６は、上記所定部位Ｔｂａ溶接後のタブＴｂの所定部位Ｔｂｂ（図２参照）をさらに溶接するものである。本実施形態では、タブＴｂの溶接強度を高めるために２箇所を溶接している。なお、２箇所の溶接を異なる位置で２回に分けて行う理由は、各溶接装置３５，３６のサイズの関係上、当該溶接装置３５，３６を同一位置に設置できず、２箇所を同時に溶接できないためである。第２タブ溶接装置３６が行う溶接作業が本実施形態における第２作業に相当する。   Further, a second tab welding device 36 as a second tab welding means (second working means) is disposed at a position approximately one pitch downstream of the electrode sheet 1 from the first tab welding device 35. The second tab welding device 36 further welds the predetermined portion Tbb (see FIG. 2) of the tab Tb after the predetermined portion Tba welding. In this embodiment, two locations are welded in order to increase the welding strength of the tab Tb. The reason why the two weldings are performed in two different locations is that the welding devices 35 and 36 cannot be installed at the same position because of the size of each welding device 35 and 36, and the two locations are welded simultaneously. This is because it cannot be done. The welding operation performed by the second tab welding device 36 corresponds to the second operation in the present embodiment.

また、第１タブ溶接装置３５と第２タブ溶接装置３６との間の位置には、補正手段としての補正機構３７が設けられている。補正機構３７は、後述するように電極シート１上の第１被溶接部位Ｘ１を第１溶接位置Ｆ１に位置合わせするためのものである。   In addition, a correction mechanism 37 as a correction unit is provided at a position between the first tab welding device 35 and the second tab welding device 36. The correction mechanism 37 is for aligning the first welded part X1 on the electrode sheet 1 with the first welding position F1, as will be described later.

補正機構３７は、一対の従動ローラ３７ａ，３７ｂと、両ローラ３７ａ，３７ｂ間において上下方向に変位可能に設けられた手繰りローラ（駆動ローラ）３７ｃとを有する。手繰りローラ３７ｃは、制御装置５０により制御される図示しないサーボモータやボールねじ等の駆動機構によって上下方向に昇降駆動する。   The correction mechanism 37 includes a pair of driven rollers 37a and 37b, and a hand roller (drive roller) 37c provided between the rollers 37a and 37b so as to be vertically displaceable. The hand roller 37c is driven up and down in the vertical direction by a drive mechanism such as a servo motor (not shown) or a ball screw controlled by the control device 50.

第２タブ溶接装置３６の下流側には、電極シート１を挟持するように一対のピンチローラ３８ａ，３８ｂが設けられている。ピンチローラ３８ａ，３８ｂは、本実施形態における搬送手段を構成するものであり、制御装置５０が図示しないサーボモータ等の駆動機構を制御することにより回転駆動する。これにより、電極シート１は、ほぼ１ピッチ分ずつ下流側へ間欠搬送される。また、後述するように、その搬送量は適宜調整され、当該搬送に併せて第２被溶接部位Ｘ２が第２溶接位置Ｆ２に位置合わせされる。   A pair of pinch rollers 38 a and 38 b are provided on the downstream side of the second tab welding device 36 so as to sandwich the electrode sheet 1. The pinch rollers 38a and 38b constitute a conveying unit in the present embodiment, and are rotationally driven by the control device 50 controlling a driving mechanism such as a servo motor (not shown). As a result, the electrode sheet 1 is intermittently conveyed downstream by approximately one pitch. Further, as will be described later, the conveyance amount is appropriately adjusted, and the second welded part X2 is aligned with the second welding position F2 in accordance with the conveyance.

また、ピンチローラ３８ａ，３８ｂにはエンコーダ（図示略）が設けられており、その値は制御装置５０に送られる。   The pinch rollers 38 a and 38 b are provided with encoders (not shown), and the values are sent to the control device 50.

ピンチローラ３８ａ，３８ｂの下流側には、上記バッファ機構３２と同様の構成を有するバッファ機構３９が設けられている。バッファ機構３９は、ピンチローラ３８ａ，３８ｂによる電極シート１の繰出し量と、後述するピンチローラ４１ａ，４１ｂによる電極シート１の繰出し量との差を吸収する役割を果たすとともに、電極シート１に対し張力を付与する機能を有する。   A buffer mechanism 39 having the same configuration as the buffer mechanism 32 is provided on the downstream side of the pinch rollers 38a and 38b. The buffer mechanism 39 absorbs the difference between the feed amount of the electrode sheet 1 by the pinch rollers 38a and 38b and the feed amount of the electrode sheet 1 by the pinch rollers 41a and 41b, which will be described later. It has the function to give.

バッファ機構３９の下流側には、溶接されたタブＴｂに対し保護テープＴｐを貼付するテープ貼付手段としてのテープ貼付装置４０が配置されている。   On the downstream side of the buffer mechanism 39, a tape applicator 40 is disposed as a tape applicator for attaching the protective tape Tp to the welded tab Tb.

テープ貼付装置４０の下流側には、電極シート１を挟持するように一対のピンチローラ４１ａ，４１ｂが設けられている。ピンチローラ４１ａ，４１ｂは、テープ貼付装置４０のテープ貼付動作に合せて、１ピッチ分ずつ電極シート１を繰り出すように構成されている。   A pair of pinch rollers 41 a and 41 b are provided on the downstream side of the tape applicator 40 so as to sandwich the electrode sheet 1. The pinch rollers 41a and 41b are configured to feed the electrode sheet 1 by one pitch in accordance with the tape application operation of the tape application device 40.

タブＴｂ及び保護テープＴｐの取付けが完了した電極シート１は、最終的に巻回手段としての巻取りロール４２により巻回される。   The electrode sheet 1 on which the attachment of the tab Tb and the protective tape Tp is completed is finally wound by a winding roll 42 as a winding means.

なお、制御装置５０には、ピンチローラ３８ａ，３８ｂのエンコーダの値を計数する高速カウンタが設けられると共に、当該高速カウンタに記憶されるエンコーダ値や上記各検出センサ３３，３４の検出結果を基に、ピンチローラ３８ａ，３８ｂによる電極シート１の搬送量や補正機構３７による補正量等を演算する演算部等が設けられている。従って、制御装置５０が本実施形態における搬送量制御手段及び補正量制御手段を構成し、高速カウンタが第１計測手段及び第２計測手段を構成する。   The control device 50 is provided with a high-speed counter that counts the encoder values of the pinch rollers 38a and 38b, and based on the encoder value stored in the high-speed counter and the detection results of the detection sensors 33 and 34. In addition, a calculation unit for calculating the conveyance amount of the electrode sheet 1 by the pinch rollers 38 a and 38 b and the correction amount by the correction mechanism 37 is provided. Accordingly, the control device 50 constitutes the carry amount control means and the correction amount control means in the present embodiment, and the high speed counter constitutes the first measurement means and the second measurement means.

次にタブＴｂ溶接時における電極シート１の位置決め処理について詳しく説明する。   Next, the positioning process of the electrode sheet 1 at the time of tab Tb welding will be described in detail.

図３に示すように、各タブ溶接装置３５，３６に対する電極シート１の位置決めが適切に行われると、第１タブ溶接装置３５が溶接作業を行う第１溶接位置（第１作業位置）Ｆ１には、所定の活物質塗布部２１の上流側端部Ｄから上流側へ所定長Ｌｆだけ離れた電極シート１（活物質未塗布部２２）上の第１被溶接部位（第１被作業部位）Ｘ１が位置決めされる。   As shown in FIG. 3, when the electrode sheet 1 is properly positioned with respect to the respective tab welding devices 35, 36, the first tab welding device 35 moves to a first welding position (first working position) F <b> 1 where the welding work is performed. Is a first welded part (first work part) on the electrode sheet 1 (active material uncoated part 22) that is separated from the upstream end D of the predetermined active material application part 21 upstream by a predetermined length Lf. X1 is positioned.

同様に、第２タブ溶接装置３６が溶接作業を行う第２溶接位置（第２作業位置）Ｆ２には、所定の活物質塗布部２１の上流側端部Ｄから上流側へ所定長Ｌｆだけ離れた電極シート１（活物質未塗布部２２）上の第２被溶接部位（第２被作業部位）Ｘ２が位置決めされる。なお、第２被溶接部位Ｘ２には、既に第１タブ溶接装置３５により溶接されたタブＴｂが存在している。   Similarly, a second welding position (second work position) F2 at which the second tab welding device 36 performs a welding operation is separated from the upstream end D of the predetermined active material application part 21 by a predetermined length Lf upstream. The second welded part (second work part) X2 on the electrode sheet 1 (active material uncoated part 22) is positioned. In addition, the tab Tb welded by the 1st tab welding apparatus 35 already exists in the 2nd to-be-welded site | part X2.

かかる状態となり、位置決めが完了すると、各タブ溶接装置３５，３６により各被溶接部位Ｘ１，Ｘ２（タブＴｂの所定部位Ｔｂａ，Ｔｂｂ）に対し溶接作業が行われる。   When this state is reached and positioning is completed, welding operations are performed on the welded parts X1, X2 (predetermined parts Tba, Tbb of the tab Tb) by the tab welding devices 35, 36.

尚、上記のように電極シート１が位置決めされた状態では、第１検出センサ３３は、所定の活物質塗布部２１の上流側端部Ｄから上流側へ所定長Ｌｓ１だけ離れた位置に位置し、第２検出センサ３４は、所定の活物質塗布部２１の上流側端部Ｄから上流側へ所定長Ｌｓ２だけ離れた位置に位置している。上記所定長Ｌｓ１及び所定長Ｌｓ２が本実施形態における第１搬送量及び第２搬送量に相当する。   In the state where the electrode sheet 1 is positioned as described above, the first detection sensor 33 is located at a position away from the upstream end D of the predetermined active material application unit 21 by a predetermined length Ls1 upstream. The second detection sensor 34 is located at a position away from the upstream end D of the predetermined active material application part 21 by a predetermined length Ls2 upstream. The predetermined length Ls1 and the predetermined length Ls2 correspond to the first transport amount and the second transport amount in the present embodiment.

各タブ溶接装置３５，３６による溶接作業が終了すると、まず制御装置５０は、前回の各種演算結果や高速カウンタの値等をクリアすると共に、補正機構３７の手繰りローラ３７ｃ等を基準位置に戻すなど初期設定を行う。   When the welding work by the tab welding devices 35 and 36 is completed, the control device 50 first clears the previous various calculation results, the value of the high-speed counter, etc., and returns the hand roller 37c of the correction mechanism 37 to the reference position. Perform initial settings.

初期設定の後、制御装置５０はピンチローラ３８ａ，３８ｂを駆動させ、電極シート１の次なる搬送を開始する（図４参照）。   After the initial setting, the control device 50 drives the pinch rollers 38a and 38b to start the next conveyance of the electrode sheet 1 (see FIG. 4).

電極シート１の搬送が開始されると、制御装置５０は、ピンチローラ３８ａ，３８ｂのエンコーダ値を高速カウンタにより計数する。   When the conveyance of the electrode sheet 1 is started, the control device 50 counts the encoder values of the pinch rollers 38a and 38b with a high-speed counter.

そして、第２検出センサ３４により、活物質塗布部２１の上流側端部Ｄが検出されると（図５参照）、当該検出時における高速カウンタの値を記憶（ラッチ）する。同様に、第１検出センサ３３により、活物質塗布部２１の上流側端部Ｄが検出されると、当該検出時における高速カウンタの値を記憶（ラッチ）する。   When the upstream end D of the active material application unit 21 is detected by the second detection sensor 34 (see FIG. 5), the value of the high-speed counter at the time of detection is stored (latched). Similarly, when the upstream end D of the active material application unit 21 is detected by the first detection sensor 33, the value of the high-speed counter at the time of detection is stored (latched).

続いて、制御装置５０は、第２検出センサ３４の検出結果に対応してラッチした高速カウンタの値に相当する電極シート１の搬送量Ｃ２、すなわち電極シート１の搬送開始から第２検出センサ３４によって次に活物質塗布部２１の上流側端部Ｄが検出されるまでの電極シート１の搬送量Ｃ２と、予め設定された第２基準量Ｃ２´とを比較し、その差分をズレ量Ｈ２（Ｈ２＝Ｃ２−Ｃ２´）として記憶する。なお、第２基準量Ｃ２´は、電極シート１の１ピッチ分の基準長をＬｈとすると、Ｃ２´＝Ｌｈ−Ｌｓ２により求めることができる。   Subsequently, the controller 50 detects the conveyance amount C2 of the electrode sheet 1 corresponding to the value of the high-speed counter latched corresponding to the detection result of the second detection sensor 34, that is, the second detection sensor 34 from the start of conveyance of the electrode sheet 1. Next, the transport amount C2 of the electrode sheet 1 until the upstream end portion D of the active material application unit 21 is detected next is compared with a preset second reference amount C2 ′, and the difference is compared with the shift amount H2. Store as (H2 = C2-C2 ′). The second reference amount C2 ′ can be obtained by C2 ′ = Lh−Ls2 where the reference length for one pitch of the electrode sheet 1 is Lh.

同様に、制御装置５０は、第１検出センサ３３の検出結果に対応してラッチした高速カウンタの値に相当する電極シート１の搬送量Ｃ１、すなわち電極シート１の搬送開始から第１検出センサ３３によって次に活物質塗布部２１の上流側端部Ｄが検出されるまでの電極シート１の搬送量Ｃ１と、予め設定された第１基準量Ｃ１´とを比較し、その差分をズレ量Ｈ１（Ｈ１＝Ｃ１−Ｃ１´）として記憶する。なお、第１基準量Ｃ１´は、電極シート１の１ピッチ分の基準長をＬｈとすると、Ｃ１´＝Ｌｈ−Ｌｓ１により求めることができる。   Similarly, the controller 50 detects the conveyance amount C1 of the electrode sheet 1 corresponding to the value of the high-speed counter latched corresponding to the detection result of the first detection sensor 33, that is, the first detection sensor 33 from the start of conveyance of the electrode sheet 1. Next, the transport amount C1 of the electrode sheet 1 until the upstream end D of the active material application unit 21 is detected is compared with a preset first reference amount C1 ′, and the difference is compared with the shift amount H1. Store as (H1 = C1-C1 ′). The first reference amount C1 ′ can be obtained by C1 ′ = Lh−Ls1, where the reference length for one pitch of the electrode sheet 1 is Lh.

さらに、制御装置５０は、上記ズレ量Ｈ１及びズレ量Ｈ２を基に、第１被溶接部位Ｘ１の補正量Ｈ´（Ｈ´＝Ｈ１−Ｈ２）を算出する。   Further, the control device 50 calculates a correction amount H ′ (H ′ = H1−H2) of the first welded part X1 based on the deviation amount H1 and the deviation amount H2.

そして、制御装置５０は、予め設定された基準搬送量Ｌｈにズレ量Ｈ２を加えた分（Ｌｈ＋Ｈ２＝Ｃ２＋Ｌｓ２）だけ電極シート１を搬送するよう、ピンチローラ３８ａ，３８ｂを駆動させ、電極シート１上の第２被溶接部位Ｘ２を第２溶接位置Ｆ２に位置決めする。   Then, the control device 50 drives the pinch rollers 38a and 38b so that the electrode sheet 1 is conveyed by an amount (Lh + H2 = C2 + Ls2) obtained by adding a deviation amount H2 to a preset reference conveyance amount Lh. The second welded part X2 is positioned at the second welding position F2.

併せて、制御装置５０は、ピンチローラ３８ａ，３８ｂにより搬送された電極シート１の搬送量（Ｌｈ＋Ｈ２）から、上記補正量Ｈ´分だけ補正する。具体的には、補正機構３７の手繰りローラ３７ｃをＨ´／２だけ上昇させることにより、電極シート１の上流側を補正量Ｈ´分だけ手繰り、電極シート１上の第１被溶接部位Ｘ１を第１溶接位置Ｆ１に位置決めする。   At the same time, the control device 50 corrects the correction amount H ′ by the conveyance amount (Lh + H2) of the electrode sheet 1 conveyed by the pinch rollers 38a and 38b. Specifically, by raising the hand roller 37c of the correction mechanism 37 by H ′ / 2, the upstream side of the electrode sheet 1 is handed by the correction amount H ′, and the first welded part X1 on the electrode sheet 1 is moved. Position to the first welding position F1.

以上詳述したように、本実施形態によれば、電極シート１を１ピッチ分間欠搬送するに際し、第２検出センサ３４の検出結果に基づき、ピンチローラ３８ａ，３８ｂによる電極シート１の搬送量を調整することで、第２被溶接部位Ｘ２を第２溶接位置Ｆ２に位置決めすると共に、第１検出センサ３３及び第２検出センサ３４の検出結果を基に、補正機構３７による補正量を調整することで、第１被溶接部位Ｘ１を第１溶接位置Ｆ１に位置決めすることができる。つまり、第２溶接位置Ｆ２への第２被溶接部位Ｘ２の搬送及び位置決めと、第１溶接位置Ｆ１への第１被溶接部位Ｘ１の搬送及び位置決めを併せて行うことができる。さらに、所定の搬送停止期間中に２箇所で同時に溶接作業を行うことができる。結果として、巻回装置３０の高速化ひいては生産性の向上を図ることができる。   As described above in detail, according to this embodiment, when the electrode sheet 1 is intermittently conveyed by one pitch, the conveyance amount of the electrode sheet 1 by the pinch rollers 38a and 38b is set based on the detection result of the second detection sensor 34. By adjusting, the second welded part X2 is positioned at the second welding position F2, and the correction amount by the correction mechanism 37 is adjusted based on the detection results of the first detection sensor 33 and the second detection sensor 34. Thus, the first welded part X1 can be positioned at the first welding position F1. That is, the conveyance and positioning of the second welding site X2 to the second welding position F2 and the conveyance and positioning of the first welding site X1 to the first welding position F1 can be performed together. Furthermore, it is possible to perform welding work simultaneously at two locations during a predetermined conveyance stop period. As a result, it is possible to increase the speed of the winding device 30 and to improve productivity.

また、本実施形態によれば、電極シート１の搬送中に、各検出センサ３３，３４により検出された検出結果を基に、当該搬送による電極シート１の搬送量を調整することにより、当該搬送停止時に各被溶接部位Ｘ１，Ｘ２を各溶接位置Ｆ１，Ｆ２に位置決めすることができる。結果として、過去に取得した情報を基に補正等を行う構成に比べ、位置決め精度の向上を図ることができる。   Moreover, according to this embodiment, the conveyance of the electrode sheet 1 is adjusted by adjusting the conveyance amount of the electrode sheet 1 by the conveyance based on the detection results detected by the detection sensors 33 and 34 during the conveyance of the electrode sheet 1. At the time of stopping, the welded parts X1 and X2 can be positioned at the welding positions F1 and F2. As a result, it is possible to improve the positioning accuracy as compared with a configuration in which correction or the like is performed based on information acquired in the past.

加えて、本実施形態では、ピンチローラ３８ａ，３８ｂのエンコーダ値を高速カウンタで計数し、各検出センサ３３，３４が活物質塗布部２１の上流側端部Ｄを検出した時点のエンコーダ値を事前に記憶（ラッチ）しておくことができる。結果として、制御装置５０は、各検出センサ３３，３４が活物質塗布部２１の上流側端部Ｄを検出した時点のタイムラグのない適切なエンコーダ値を基に、電極シート１の搬送量を精度良く算出することができる。また、各検出センサ３３，３４による検出を行うために電極シート１を低速搬送させる等しなくともよいため、さらなる巻回装置３０の高速化ひいては生産性の向上を図ることができる。   In addition, in the present embodiment, the encoder values of the pinch rollers 38a and 38b are counted by a high-speed counter, and the encoder values at the time when the detection sensors 33 and 34 detect the upstream end D of the active material application unit 21 are obtained in advance. Can be stored (latched). As a result, the control device 50 accurately determines the conveyance amount of the electrode sheet 1 based on an appropriate encoder value without a time lag when each of the detection sensors 33 and 34 detects the upstream end D of the active material application unit 21. It can be calculated well. Further, since it is not necessary to convey the electrode sheet 1 at a low speed in order to perform detection by each of the detection sensors 33 and 34, it is possible to further increase the speed of the winding device 30 and improve productivity.

尚、上述した実施形態の記載内容に限定されることなく、例えば次のように実施してもよい。   In addition, you may implement as follows, for example, without being limited to the description content of embodiment mentioned above.

（ａ）上記実施形態では、本願発明を、電極シート１の原反を製造する巻回装置３０に適用しているが、これに限らず、例えば正極活物質が塗布された正極シートと、負極活物質が塗布された負極シートとを、絶縁素材からなるセパレータシートを介して重ね合わせた状態で巻回し、電池素子を製造する巻回装置に適用してもよい。   (A) In the above embodiment, the present invention is applied to the winding device 30 that manufactures the raw sheet of the electrode sheet 1. However, the present invention is not limited thereto, and for example, a positive electrode sheet coated with a positive electrode active material and a negative electrode You may apply to the winding apparatus which winds the negative electrode sheet | seat with which the active material was apply | coated on the separator sheet which consists of an insulating material, and manufactures a battery element.

（ｂ）上記実施形態では、第１タブ溶接装置３５が溶接作業を行う第１溶接位置Ｆ１への位置決めと、第２タブ溶接装置３６が溶接作業を行う第２溶接位置Ｆ２への位置決めとを併せて行う構成となっている。これに限らず、例えばタブＴｂの溶接位置への位置決めと、保護テープＴｐの貼付位置への位置決めとを併せて行う構成としてもよいし、複数箇所に保護テープＴｐを貼付する構成においては、複数の保護テープＴｐの各貼付位置への位置決めを併せて行う構成としてもよい。   (B) In the above embodiment, positioning to the first welding position F1 where the first tab welding device 35 performs the welding operation and positioning to the second welding position F2 where the second tab welding device 36 performs the welding operation are performed. It is configured to be performed together. For example, the positioning of the tab Tb at the welding position and the positioning of the protective tape Tp at the application position may be performed together. It is good also as a structure which positions to each sticking position of this protective tape Tp together.

（ｃ）上記実施形態では、２箇所の位置決めを併せて行う構成となっているが、これに限らず、３箇所以上の位置決めを併せて行う構成としてもよい。例えば、上記実施形態において、ピンチローラ３８ａ，３８ｂ及びバッファ機構３９を省略し、これに代えて、テープ貼付装置４０と第２タブ溶接装置３６との間に、補正機構３７と同様の補正機構や所定の検出センサを配置し、テープ貼付装置４０、第２タブ溶接装置３６及び第１タブ溶接装置３５に対する３箇所の位置決めを併せて行う構成としてもよい。   (C) In the above-described embodiment, the positioning at two locations is performed together. However, the configuration is not limited to this, and the positioning at three or more locations may be performed at the same time. For example, in the above embodiment, the pinch rollers 38a and 38b and the buffer mechanism 39 are omitted, and instead of this, a correction mechanism similar to the correction mechanism 37 between the tape applicator 40 and the second tab welding device 36, It is good also as a structure which arrange | positions a predetermined detection sensor and performs positioning of three places with respect to the tape sticking apparatus 40, the 2nd tab welding apparatus 36, and the 1st tab welding apparatus 35 collectively.

（ｄ）上記実施形態では、高速カウンタを用いてピンチローラ３８ａ，３８ｂのエンコーダ値を計数する構成を採用しているが、これに限らず、電極シート１の通常搬送速度が比較的低速の場合や、各検出センサ３３，３４が活物質塗布部２１の上流側端部Ｄを検出した後、電極シート１が停止するまでの距離Ｌｓ１，Ｌｓ２が比較的長い場合等においては、高速カウンタを用いない構成としてもよい。   (D) In the above embodiment, the high-speed counter is used to count the encoder values of the pinch rollers 38a and 38b. However, the present invention is not limited to this, and the normal conveyance speed of the electrode sheet 1 is relatively low. If the distances Ls1 and Ls2 until the electrode sheet 1 stops after the detection sensors 33 and 34 detect the upstream end D of the active material application part 21 are relatively long, a high-speed counter is used. It is good also as a structure which is not.

（ｅ）上記実施形態では、各検出センサ３３，３４が活物質塗布部２１の上流側端部Ｄを検出し、これを基準に電極シート１の位置決めを行う構成となっているが、これに限らず、各検出センサ３３，３４が他の部位を検出する構成としてもよい。例えば、活物質塗布部２１の下流側端部を検出し、これを基準として位置決めを行う構成としてもよい。   (E) In the above embodiment, each of the detection sensors 33 and 34 detects the upstream end D of the active material application portion 21 and positions the electrode sheet 1 based on this, but this Not limited to this, the detection sensors 33 and 34 may be configured to detect other parts. For example, it is good also as a structure which detects the downstream edge part of the active material application part 21, and performs positioning on the basis of this.

また、各検出センサ３３，３４がそれぞれ別々の部位を検出する構成としてもよい。例えば、第１検出センサ３３が活物質塗布部２１の上流側端部Ｄを検出し、第２検出センサ３４が既に溶接されたタブＴｂを検出する構成としてもよい。   Moreover, it is good also as a structure which each detection sensor 33 and 34 detects a respectively different site | part. For example, the first detection sensor 33 may detect the upstream end D of the active material application unit 21 and the second detection sensor 34 may detect the already welded tab Tb.

（ｆ）補正機構３７に関しては、上記実施形態の構成に限定されず、他の構成を採用してもよい。   (F) The correction mechanism 37 is not limited to the configuration of the above embodiment, and other configurations may be adopted.

１…電極シート、２１…活物質塗布部、２２…活物質未塗布部、３０…巻回装置、３３…第１検出センサ、３４…第２検出センサ、３５…第１タブ溶接装置、３６…第２タブ溶接装置、３７…補正機構、３７ｃ…手繰りローラ、３８ａ，３８ｂ…ピンチローラ、５０…制御装置、Ｆ１…第１溶接位置、Ｆ２…第２溶接位置、Ｘ１……第１被溶接部位、Ｘ２…第２被溶接部位、Ｌｈ…電極シートの１ピッチ分の基準長、Ｌｓ１，Ｌｓ２…搬送停止時における活物質塗布部の上流側端部から検出センサまでの距離、Ｃ１，Ｃ２…電極シートの搬送開始から次に活物質塗布部の上流側端部が検出されるまでの電極シートの搬送量、Ｔｂ…タブ。   DESCRIPTION OF SYMBOLS 1 ... Electrode sheet, 21 ... Active material application part, 22 ... Active material non-application part, 30 ... Winding device, 33 ... 1st detection sensor, 34 ... 2nd detection sensor, 35 ... 1st tab welding apparatus, 36 ... Second tab welding device, 37 ... correction mechanism, 37c ... hand roller, 38a, 38b ... pinch roller, 50 ... control device, F1 ... first welding position, F2 ... second welding position, X1 ... first welded part , X2 ... second welded part, Lh ... reference length for one pitch of the electrode sheet, Ls1, Ls2 ... distance from the upstream end of the active material application part to the detection sensor when transport is stopped, C1, C2 ... electrode The amount of electrode sheet transport from the start of sheet transport to the next detection of the upstream end of the active material application unit, Tb... Tab.

Claims (5)

所定間隔で電極材が塗布された帯状の電極シートに対し所定の作業を行った後、当該電極シートを所定の巻回手段により巻回する巻回装置であって、
前記電極シートを１ピッチずつ間欠搬送する搬送手段と、
前記電極シートの搬送停止中に、第１作業位置にて、前記電極シート１ピッチごとに有する第１被作業部位に対し第１作業を行う第１作業手段と、
前記電極シートの搬送停止中に、前記第１作業位置よりも下流側に位置する第２作業位置にて、前記電極シート１ピッチごとに有する第２被作業部位に対し第２作業を行う第２作業手段と、
前記第１作業位置よりも上流位置において、前記電極シート１ピッチごとに有する第１被検出部位を検出可能な第１検出手段と、
前記第２作業位置よりも上流位置において、前記電極シート１ピッチごとに有する第２被検出部位を検出可能な第２検出手段と、
前記第２検出手段の検出結果を基に、前記搬送手段による前記電極シートの搬送量を調整する搬送量制御手段と、
前記第１被作業部位の停止位置を補正可能な補正手段と、
前記第１検出手段及び前記第２検出手段の検出結果を基に、前記補正手段による補正量を調整する補正量制御手段とを備え、
前記第２被作業部位を前記第２作業位置に位置決めすると共に、前記第１被作業部位を前記第１作業位置に位置決めすることを特徴とする巻回装置。 A winding device that performs a predetermined operation on a strip-shaped electrode sheet coated with an electrode material at a predetermined interval, and then winds the electrode sheet by a predetermined winding means,
Conveying means for intermittently conveying the electrode sheet pitch by pitch;
A first working means for performing a first work on a first work site at each first pitch of the electrode sheet at a first work position while the conveyance of the electrode sheet is stopped;
A second work is performed on the second work site for each pitch of the electrode sheet at a second work position located downstream of the first work position while the conveyance of the electrode sheet is stopped. Working means;
A first detection means capable of detecting a first detected portion having each pitch of the electrode sheet at a position upstream from the first work position;
A second detection means capable of detecting a second detected portion at every pitch of the electrode sheet at a position upstream from the second work position;
Based on the detection result of the second detection unit, a conveyance amount control unit that adjusts the conveyance amount of the electrode sheet by the conveyance unit;
Correction means capable of correcting the stop position of the first work site;
Correction amount control means for adjusting a correction amount by the correction means based on detection results of the first detection means and the second detection means,
A winding device, wherein the second work site is positioned at the second work position, and the first work site is positioned at the first work position. 前記電極シートの搬送中に前記第２検出手段によって前記第２被検出部位が検出された後、当該第２被検出部位が第２搬送量だけ搬送されて停止することにより、前記第２被作業部位が前記第２作業位置に位置決めされ、
前記電極シートの搬送中に前記第１検出手段によって前記第１被検出部位が検出された後、当該第１被検出部位が第１搬送量だけ搬送されて停止することにより、前記第１被作業部位が前記第１作業位置に位置決めされる構成であって、
前記電極シートの搬送開始から、前記第２検出手段によって次に前記第２被検出部位が検出されるまでの前記電極シートの搬送量を計測する第２計測手段と、
前記電極シートの搬送開始から、前記第１検出手段によって次に前記第１被検出部位が検出されるまでの前記電極シートの搬送量を計測する第１計測手段とを備え、
前記搬送量制御手段は、前記第２計測手段の計測結果を基に、前記搬送手段による前記電極シートの搬送量を調整し、
前記補正量制御手段は、前記第１計測手段及び前記第２計測手段の計測結果を基に、前記補正手段による補正量を調整することを特徴とする請求項１に記載の巻回装置。 After the second detection part is detected by the second detection means during the conveyance of the electrode sheet, the second detection part is conveyed by a second conveyance amount and stopped, so that the second work is performed. A part is positioned at the second working position;
After the first detection part is detected by the first detection means during the conveyance of the electrode sheet, the first detection part is conveyed by a first conveyance amount and stopped, so that the first work is performed. A part is positioned at the first working position,
A second measuring unit that measures a conveyance amount of the electrode sheet from the start of conveyance of the electrode sheet until the second detection target is detected next by the second detection unit;
A first measuring unit that measures a conveyance amount of the electrode sheet from the start of conveyance of the electrode sheet until the first detection site is detected next by the first detection unit;
The conveyance amount control means adjusts the conveyance amount of the electrode sheet by the conveyance means based on the measurement result of the second measurement means,
2. The winding device according to claim 1, wherein the correction amount control unit adjusts a correction amount by the correction unit based on measurement results of the first measurement unit and the second measurement unit. 前記第１計測手段及び前記第２計測手段は、高速カウンタであることを特徴とする請求項２に記載の巻回装置。   The winding device according to claim 2, wherein the first measuring unit and the second measuring unit are high-speed counters. 前記補正手段は、前記電極シートの搬送方向と交差する所定方向に往復駆動して電極シートを迂回させる駆動ローラを備え、
前記補正量制御手段が、前記第１検出手段及び前記第２検出手段の検出結果を基に、前記駆動ローラを変位させることにより前記迂回量を変更して前記第１被作業部位の停止位置を補正することを特徴とする請求項１乃至３のいずれかに記載の巻回装置。 The correction means includes a driving roller that reciprocates in a predetermined direction intersecting the conveying direction of the electrode sheet to bypass the electrode sheet,
The correction amount control means changes the detour amount by displacing the drive roller based on the detection results of the first detection means and the second detection means, and sets the stop position of the first work site. It correct | amends, The winding apparatus in any one of Claim 1 thru | or 3 characterized by the above-mentioned. 前記第１作業手段並びにこれに対応する前記第１検出手段及び前記補正手段をそれぞれ複数箇所に備えたことを特徴とする請求項１乃至４のいずれかに記載の巻回装置。   5. The winding device according to claim 1, wherein the first working unit and the first detecting unit and the correcting unit corresponding to the first working unit are provided at a plurality of locations.
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CN113782819A (en) * 2021-08-30 2021-12-10 广东利元亨智能装备股份有限公司 Method for determining edge distance of winding core tab and method for correcting winding equipment
CN113782819B (en) * 2021-08-30 2022-08-16 广东利元亨智能装备股份有限公司 Method for determining edge distance of winding core tab and method for correcting winding equipment

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