JPH11307087A - Intermittent coating device - Google Patents
Intermittent coating deviceInfo
- Publication number
- JPH11307087A JPH11307087A JP10106242A JP10624298A JPH11307087A JP H11307087 A JPH11307087 A JP H11307087A JP 10106242 A JP10106242 A JP 10106242A JP 10624298 A JP10624298 A JP 10624298A JP H11307087 A JPH11307087 A JP H11307087A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- paint
- head
- liquid level
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Coating Apparatus (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、長尺の基材シート
にスラリ状の塗料を一定厚みで塗布する方法およびその
装置に関し、特に基材シート上に所定長さの塗布部分
と、所定長さの未塗布部分を交互に形成するための間欠
塗布装置に関するもので、特に非水電解質電池の電極製
造方法に適したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for applying a slurry-like coating material to a long base sheet at a constant thickness, and more particularly to a method for applying a predetermined length of a coating portion on a base sheet. The present invention relates to an intermittent coating device for alternately forming uncoated portions of the electrode, and is particularly suitable for a method for manufacturing an electrode of a nonaqueous electrolyte battery.
【０００２】[0002]
【従来の技術】一般に非水電解質電池は、用いる非水電
解質の電気伝導度が水系電解質電池に比較して低いの
で、集電体である導電性支持体に形成される電解層の厚
みを薄くして内部抵抗を下げる必要がある。そのため、
上記非水電解質電池の円筒型電池、角型電池では電極活
物質充填量を上げるため、シート状の電極を巻回した渦
巻き式構造や、シート状の電極を積み重ねた積層構造が
採用されている。2. Description of the Related Art In general, a non-aqueous electrolyte battery has a lower electroconductivity than a water-based electrolyte battery. Therefore, the thickness of an electrolytic layer formed on a conductive support serving as a current collector is reduced. It is necessary to lower the internal resistance. for that reason,
In order to increase the filling amount of the electrode active material, the cylindrical battery of the non-aqueous electrolyte battery and the prismatic battery adopt a spiral structure in which a sheet-like electrode is wound or a stacked structure in which a sheet-like electrode is stacked. .
【０００３】図１２に非水電解質電池として一般的なリ
チウムイオン二次電池の構造を示す。この電池において
は、電解活物質であるリチウム酸化コバルトを主体とす
る電極合剤が、導電性支持体であるアルミニウム箔の表
面に所定の厚さで塗布された陽極板１３０と、カーボン
を主体とした電極合剤が塗布された陰極板１３１とが絶
縁体からなるセパレータ１３２を介して積層状に巻回さ
れている。FIG. 12 shows a structure of a general lithium ion secondary battery as a nonaqueous electrolyte battery. In this battery, an electrode plate mainly composed of lithium cobalt oxide as an electrolytic active material, an anode plate 130 applied to a surface of an aluminum foil as a conductive support at a predetermined thickness, and mainly carbon. The cathode plate 131 coated with the electrode mixture is wound in a laminated state with a separator 132 made of an insulator interposed therebetween.
【０００４】そして、陽極板１３０の内部端部にはアル
ミニウムからなる陽極リード１３３が接合されており、
この陽極リード１３３は電池蓋１３４に接合されてい
る。また、陰極板１３１の外周部には、ニッケルからな
る陰極リード１３５が接合されており、この陰極リード
１３５は電池缶１３６の底面に接続されている。[0004] An anode lead 133 made of aluminum is joined to the inner end of the anode plate 130.
The anode lead 133 is joined to the battery cover 134. A cathode lead 135 made of nickel is joined to an outer peripheral portion of the cathode plate 131, and the cathode lead 135 is connected to a bottom surface of the battery can 136.
【０００５】ところで、このような陽極板１３０を製造
する場合には、長い帯状物を連続的に製造し、これを所
定の長さに切って、個々の陽極板１３０を製造してい
る。上記陽極板１３０においては、前述のように内部端
部に陽極リード１３３を接合する必要があり、上述のよ
うに陽極板１３０用として長い帯状物を連続して製造す
る場合には、電極合剤を塗布した塗布部分と陽極リード
１３３を接合するために電極合剤を塗布していない未塗
布部分とを、順次に形成する必要がある。When such an anode plate 130 is manufactured, a long strip is continuously manufactured and cut into predetermined lengths to manufacture individual anode plates 130. In the anode plate 130, it is necessary to bond the anode lead 133 to the inner end as described above, and when continuously manufacturing a long strip for the anode plate 130 as described above, the electrode mixture is required. It is necessary to sequentially form an applied portion on which the electrode mixture is applied and an uncoated portion on which the electrode mixture is not applied in order to join the anode lead 133.
【０００６】また、陰極板１３１についても、これを製
造する場合には、長い帯状物を連続的に製造し、これを
所定の長さに切って個々の陰極板１３１を製造してい
る。さらに、陰極板１３１も前述のように外周部に陰極
リード１３５を接合する必要があり、上述のように陰極
板１３１用の長い帯状物を連続して製造する場合には、
電極合剤を塗布した塗布部分と陰極リード１３５を接続
するために電極合剤を塗布していない部分とを、順次形
成する必要がある。In the case of manufacturing the cathode plate 131 as well, a long strip is continuously manufactured and cut into predetermined lengths to manufacture individual cathode plates 131. Further, the cathode plate 131 also needs to be joined with the cathode lead 135 on the outer peripheral portion as described above. When the long strip for the cathode plate 131 is continuously manufactured as described above,
It is necessary to sequentially form a portion where the electrode mixture is applied and a portion where the electrode mixture is not applied in order to connect the cathode lead 135.
【０００７】そこで、上記陽極板１３０および陰極板１
３１を製造する方法としては、従来より、長尺の集電体
であり、導電性支持体である基材の未塗布部分となるべ
き部分に予めマスキングを施しておき、この長尺基材を
走行させながら、塗布を行って塗布部分と未塗布部分を
交互に形成する方法、長尺の基材上の全領域に塗布を行
った後、未塗布部分とすべき部分を削り取って塗布部分
と未塗布部分を交互に形成する方法が挙げられる。Therefore, the anode plate 130 and the cathode plate 1
As a method of manufacturing 31, a mask has been previously applied to a portion that is a long current collector and is to be an uncoated portion of a base material that is a conductive support, and the long base material is While running, a method of alternately forming an application part and an unapplied part by performing application, after applying the entire area on the long base material, shaving off the part that should be the unapplied part and applying the applied part A method of alternately forming uncoated portions may be used.
【０００８】このように、予めマスキングを施すか、塗
布後に未塗布部分とすべき部分を削り取るといった場合
の塗布方式としては、第１の方法として特開平４−２８
２５５８号公報に示されるような電極活物質を含む塗料
を基材の両側に押しだし成形する方法、第２の方法とし
て特開昭６３−１１４０５８号公報や特開平３−４３９
５８号公報に示されるような引き上げ方式、第３の方式
として特開平１−２６７９５３号公報や特開平１−１９
４２６５号公報に示されるような引き下げ方式が提案さ
れている。[0008] As described above, as a first method, an application method in which masking is performed in advance or a portion to be made an unapplied portion after application is scraped off is disclosed in Japanese Patent Laid-Open No. 4-28.
JP-A-63-114058 and JP-A-3-439 disclose a method of extruding and coating a paint containing an electrode active material on both sides of a substrate as disclosed in JP-A No. 2558/1990.
Japanese Patent Laid-Open Publication No. 1-267953 and Japanese Patent Laid-Open Publication No.
A lowering system as disclosed in Japanese Patent No. 4265 has been proposed.
【０００９】また、第４の塗布方式としては、複数の回
転するロールを組み合わせて、そのロールギャップを電
極活物質を含む塗料が通過することによりロールギャッ
プ内を走行する基材に塗布が行われるロールコーティン
グ方式も挙げられる。このようなロールコーティング方
式としては、３本リバースロール方式、リバースグラビ
ア方式、ダイレクトグラビア方式などが挙げられる。As a fourth coating method, a plurality of rotating rolls are combined, and a coating material containing an electrode active material passes through the roll gap, whereby coating is performed on a substrate traveling in the roll gap. A roll coating method is also included. Examples of such a roll coating method include a three-roll reverse roll method, a reverse gravure method, and a direct gravure method.
【００１０】さらに、第５の塗布方式としては、特開平
１−１８４０６９号公報や特開平１−１９４２６５号公
報、特開平４−２４２０７１号公報に示されるような基
材に対し、適当な隙間をもってドクターブレードを配置
し、電極活物質を含む塗料をこのドクターブレード前面
に貯え、走行する基材に対し適量の電極合剤液をドクタ
ーブレードにより引き出すことにより基材に塗布を行う
方式も挙げられる。Further, as a fifth coating method, an appropriate gap is provided between a substrate as disclosed in JP-A-1-18469, JP-A-1-194265, and JP-A-4-2402071. There is also a method in which a doctor blade is disposed, a paint containing an electrode active material is stored on the front surface of the doctor blade, and an appropriate amount of the electrode mixture liquid is drawn out of the running base material by the doctor blade, thereby coating the base material.
【００１１】一方、上述のように予めマスキングを施し
たり、塗布後に不要な部分を削ったりする方法とは異な
り、塗布時から未塗布部分と塗布部分を順次に形成する
方法も挙げられている。このような第７の塗布方式とし
ては、特開平１−１８４０６９号公報に示されるような
ドクターブレードと塗料滞留部を有するシャッタを組み
合わせた塗布部を走行する基材上に配置する間欠塗布方
式が提案されている。この方式では、固定されたドクタ
ーブレードと、走行する基材との隙間を変化させること
より塗布厚みの調整を行い、ドクターブレードに塗料を
供給するための塗料滞留部を有するシャッタを開閉する
ことにより塗布部分と未塗布部分を交互に基材上に形成
する。On the other hand, unlike the method of masking in advance or removing unnecessary portions after coating as described above, there is also a method of forming an uncoated portion and a coated portion sequentially from the time of coating. As such a seventh coating method, there is an intermittent coating method in which an application section in which a doctor blade and a shutter having a paint retaining section are combined and arranged on a traveling base material as shown in Japanese Patent Application Laid-Open No. 1-184069 is disclosed. Proposed. In this method, the coating thickness is adjusted by changing the gap between the fixed doctor blade and the traveling base material, and by opening and closing a shutter having a paint retaining portion for supplying paint to the doctor blade. The coated part and the uncoated part are alternately formed on the substrate.
【００１２】ところが、上述したような各種の塗布方式
には、以下に示すような不都合がある。すなわち、第
１、第２および第３の方法においては、基材両面に同時
に塗布できるので効率は良いが、基材を両電極合剤塗料
の中央に位置させることが難しく、厚さの均一な薄い電
極板を製造することが困難である。However, the above-mentioned various coating methods have the following disadvantages. That is, in the first, second, and third methods, since the coating can be simultaneously applied to both surfaces of the base material, the efficiency is high. It is difficult to produce thin electrode plates.
【００１３】さらに、第４の方法においては、所望の電
極厚さに対し、適当な電極合剤となる塗料の粘弾性挙動
と表面張力の関係からリッピング（畝化現象）と呼ばれ
る塗膜欠陥が発生しやすく、また塗料がコーティングロ
ール間でアプリケーションしたり、レベリングしたり、
転写される際の塗料の飛散、乾燥による粘弾性挙動が不
安定になったりすることがあった。また塗料の戻り循環
供給経路において、塗料が大気中に暴露されることによ
る塗料中の揮発成分の変化などにより、安定した塗布を
長時間維持するのが困難である。Further, in the fourth method, a coating defect called ripping (ridge phenomenon) is formed from a relationship between a viscoelastic behavior and a surface tension of a coating material as an appropriate electrode mixture for a desired electrode thickness. Easy to occur, and paint is applied between coating rolls, leveled,
The viscoelastic behavior due to scattering and drying of the paint at the time of transfer may become unstable. In the return circulation supply path of the paint, it is difficult to maintain stable application for a long time due to a change in volatile components in the paint due to the exposure of the paint to the atmosphere.
【００１４】また、第５の方法は電極合剤の塗布が単純
で、極めて効率良く電池電極を得ることができるが、塗
布を停止する場合等、ドクターブレードに貯えられた塗
料がなくなるのを待たなければならないという不都合が
ある。According to the fifth method, the application of the electrode mixture is simple, and the battery electrode can be obtained very efficiently. However, when the application is stopped, it is necessary to wait until the paint stored in the doctor blade runs out. There is a disadvantage that it must be done.
【００１５】さらに、第６の方法においては、エクスト
リュージョンダイに供給する塗料の供給圧力を加減する
ことにより、上述の第５の方法では不可能であった任意
の場所での塗布停止が可能となる。しかしながら、この
方法では、塗料の粘弾性挙動に塗布状態が強く左右さ
れ、特に固形分を多く含む塗料を使用する場合には動粘
性が極端に高くなり、所望の塗布厚みと塗布速度が得ら
れないといった不都合が生じる。Further, in the sixth method, by controlling the supply pressure of the paint to be supplied to the extrusion die, the coating can be stopped at an arbitrary place, which is impossible in the fifth method. Becomes However, in this method, the application state is strongly influenced by the viscoelastic behavior of the paint, and particularly when a paint containing a large amount of solids is used, the kinematic viscosity becomes extremely high, and the desired application thickness and application speed can be obtained. Inconvenience that there is no.
【００１６】さらに、上述の第１〜第６の方法について
は、いずれも基材上に未塗布部分を形成するために、基
材に予めマスキングを行うか、電極合剤の塗布後に未塗
布部分となる部分を削り取るといった作業が必要とされ
ており、電池電極製造工程に著しい手間と原材料の一部
を除去することによる無駄が発生する。Further, in each of the above-mentioned first to sixth methods, in order to form an uncoated portion on the substrate, masking is performed on the substrate in advance, or the uncoated portion is formed after the application of the electrode mixture. In such a case, there is a need for an operation of shaving off a portion of the battery electrode, which results in significant trouble in the battery electrode manufacturing process and wastefulness of removing a part of the raw material.
【００１７】これに対し、ドクターブレードと塗料滞留
部を有するシャッタを組み合わせた塗布装置を走行する
基材上に配置する第７の方法においては、基材に予めマ
スキングを行ったり、塗布した後で未塗布部分となる箇
所の塗料を削り取る必要がなく、様々な種類の電池電極
の製造において製造装置本体の変更部分が少なく、極め
て高効率に所望の電池電極を得ることができる。On the other hand, in the seventh method of disposing a coating device in which a doctor blade and a shutter having a paint retaining portion are combined on a running substrate, the substrate is previously masked or coated. There is no need to scrape off the paint on the portions that will not be applied, and there are few changes in the manufacturing apparatus main body in the manufacture of various types of battery electrodes, and a desired battery electrode can be obtained with extremely high efficiency.
【００１８】[0018]
【発明が解決しようとする課題】前述のように、第７の
間欠塗布方式を用いることが最も望ましいが、この第７
の方法によっても、依然、塗布状態が塗料の粘弾性挙動
に左右されることが少なくない。As described above, it is most preferable to use the seventh intermittent coating method.
According to the method described above, the applied state still depends on the viscoelastic behavior of the paint.
【００１９】図９は、第７の方法を用いた従来の間欠塗
布装置の基材であるシート１上への間欠塗布部の概略図
である。間欠塗布部の塗布ヘッド８とシャッタ９の間に
塗料１０を充填し、シャッタ９の開閉用のサーボモータ
１２とカム装置１３が設けられている。塗布ヘッド８と
シャッタ９の間には開閉バルブ３１を備えたパイプ１６
から塗料が送られてくるが、その塗料供給量は静電容量
式オン・オフ液面検出センサ３２により検出される塗料
液面高さの検出信号が増幅器２５により増幅されてシス
テムコントローラ１９に入力され、該コントローラ１９
がソレノイドバルブ３３を介して自動バルブ３１を開閉
制御してヘッド８内の塗料液面高さをコントロールして
いる。FIG. 9 is a schematic view of an intermittent coating section on a sheet 1 which is a base material of a conventional intermittent coating apparatus using the seventh method. A paint 10 is filled between the application head 8 and the shutter 9 in the intermittent application section, and a servo motor 12 and a cam device 13 for opening and closing the shutter 9 are provided. A pipe 16 having an opening / closing valve 31 between the coating head 8 and the shutter 9
The paint supply amount is determined by a capacitance-type ON / OFF liquid level detection sensor 32, and a detection signal of the coating liquid level is amplified by an amplifier 25 and input to the system controller 19. And the controller 19
Controls the opening and closing of the automatic valve 31 via the solenoid valve 33 to control the coating liquid level in the head 8.
【００２０】この塗布方式は、シャッタ９が開いたとき
に塗料の自重で塗料をヘッド８から吐出させて基材シー
ト１上に塗料を塗布しているので、塗料の自重の変化に
より塗料の液面の高さが変化すると、ヘッド８から吐出
する塗料の量が変化し、間欠塗布寸法（塗布した塗料の
基材シート搬送方向の長さ）の変動となる。塗料液面高
さと塗布寸法変化の一例のデータを図１０に示す。In this application method, when the shutter 9 is opened, the paint is discharged from the head 8 by its own weight and the paint is applied onto the base sheet 1. When the height of the surface changes, the amount of the paint discharged from the head 8 changes, and the intermittent coating size (the length of the applied paint in the base material sheet transport direction) changes. FIG. 10 shows data of an example of the change in the coating liquid level and the coating dimension.
【００２１】前記塗布寸法の変動は、塗料を塗布したシ
ートから得られる製品の品質上問題となるため、変動が
大きくなると歩留まりは悪くなる。また、この塗布方式
で、生産スピードを上げると間欠塗布による塗布寸法の
変動が大きくなる。The variation in the coating size causes a problem in the quality of a product obtained from the sheet coated with the paint. Therefore, if the variation is large, the yield is deteriorated. In addition, in this coating method, when the production speed is increased, the fluctuation of the coating size due to the intermittent coating becomes large.
【００２２】図１１に前記第７の塗布方式による塗布寸
法の変動例を示す。塗布したシートから得られる製品品
質と生産性を向上させるには、前記塗料液面高さ変動を
最小限にコントロールする解決策が望まれていた。従来
方式での塗料液面変動が大きい理由としては次のような
ことが挙げられる。 塗料粘性が高いため、塗料液面が下がってもセンサ３
２に付着する塗料が残り、センサ３２の検出が遅れる。 シャッタ９の開閉時に塗料液面高さが変わるので、塗
料供給のオン／オフが正確に制御できない。 塗料供給用バルブ３１と塗布ヘッド８との間に距離が
あるため、制御遅れ・バラツキが生じる。 静電容量式センサ３２のオフとオフのヒステリシスが
あり、塗料液面検出高さのバラツキが出る。FIG. 11 shows an example of a change in the coating size in the seventh coating method. In order to improve the product quality and productivity obtained from the coated sheet, a solution for minimizing the fluctuation of the coating liquid level has been desired. The reasons for the large fluctuation in the coating liquid level in the conventional method are as follows. Due to high paint viscosity, sensor 3
2 remains on the coating 2 and the detection of the sensor 32 is delayed. Since the liquid level of the paint changes when the shutter 9 is opened and closed, the on / off of the supply of the paint cannot be accurately controlled. Since there is a distance between the paint supply valve 31 and the coating head 8, control delays and variations occur. There is a hysteresis between OFF and OFF of the capacitance type sensor 32, and a variation in the coating liquid level detection height occurs.
【００２３】そこで本発明の課題は、電極合剤などの塗
料の基材上への塗布パターンを正確に、高い塗料塗布速
度で行うことができる間欠塗布装置を提供することであ
る。SUMMARY OF THE INVENTION It is an object of the present invention to provide an intermittent coating apparatus capable of accurately applying a coating material such as an electrode mixture onto a substrate at a high coating speed.
【００２４】[0024]
【課題を解決するための手段】本発明の上記課題は次の
構成で解決される。すなわち、所定長さの塗布部分と所
定長さの未塗布部分を基材上に形成するために、基材上
に間欠的に塗料を塗布するための塗料を貯えたヘッド
と、ヘッド内の塗料の塗料液面の高さを測定する塗料液
面測定センサと、基材上に交互に形成される塗料の塗布
部長と未塗布部長を検出する塗布寸法測定センサと、該
塗料液面測定センサで検出したヘッド内の塗料の液面の
高さ検出値と該液面高さの設定値との比較によりヘッド
内へ供給する塗料供給量を制御し、かつ前記塗布寸法測
定センサで検出した塗布部長と未塗布部長をそれらの設
定値と比較して前記ヘッド内の塗料の塗料液面の高さの
測定により求めた塗料供給量を補正する制御装置とを備
えた間欠塗布装置である。The above object of the present invention is attained by the following constitution. That is, in order to form an applied portion having a predetermined length and an uncoated portion having a predetermined length on the base material, a head storing the paint for intermittently applying the coating material on the base material, and a coating material in the head. A coating liquid level measurement sensor that measures the height of the coating liquid level, a coating dimension measurement sensor that detects the coating portion length and the uncoated portion length of the coating material alternately formed on the base material, and the coating liquid level measurement sensor. The amount of paint supplied to the head is controlled by comparing the detected height of the liquid level of the paint in the head with the set value of the liquid level, and the coating length detected by the coating size measuring sensor. And a controller for comparing the uncoated portion length with those set values and correcting the paint supply amount obtained by measuring the height of the paint liquid level of the paint in the head.
【００２５】上記本発明の間欠塗布装置の塗料を貯えた
ヘッドには、基材上に間欠的に塗料を塗布するための制
御装置の指令で開閉されるシャッタが設けられている。
また、塗料液面測定センサは、シャッタが開いている時
のヘッド内の塗料液面高さを検出する非接触方式のアナ
ログタイプのセンサとすることである。The head storing the paint of the intermittent coating device of the present invention is provided with a shutter which is opened and closed by a command from a control device for intermittently applying the paint on the base material.
Further, the coating liquid level measurement sensor is a non-contact analog type sensor that detects the coating liquid level in the head when the shutter is open.
【００２６】そして、前記塗料液面測定センサはシャッ
タ開の時のみ塗料液面高さをコントロールする。そして
塗料供給量の制御は連続式のバルブにして流量をコント
ロールする事がシート上への塗料塗布寸法のバラツキを
少なくするために望ましい。さらに、シート上への塗料
塗布寸法を測定して、寸法バラツキが少なくなるよう
に、ヘッドへの塗料供給量をフィードバックコントロー
ルすることも本発明の特徴である。The coating liquid level measuring sensor controls the coating liquid level only when the shutter is opened. It is desirable to control the flow rate of the paint by using a continuous valve to control the flow rate in order to reduce the dispersion of the paint application size on the sheet. Further, a feature of the present invention is to measure a paint application size on a sheet and feedback-control a paint supply amount to a head so as to reduce the size variation.
【００２７】なお、溶剤系の塗料を使用する場合は前記
各センサはファイバー方式のものを使用することが望ま
しい。When a solvent-based paint is used, it is desirable to use a fiber type sensor for each sensor.
【００２８】[0028]
【発明の実施の形態】以下、本発明を適用した具体的な
実施の形態を図面を参照しながら詳細に説明する。な
お、ここでは二次電池の製造装置について説明すること
とする。本例の電池製造装置においては図１に示すよう
に、例えば延伸加工されたアルミニウム箔である基材で
あるシート１が、巻出し軸２に巻装されており、図中矢
印Ｍ１で示すように、この巻出し軸２から送り出されて
メインロール３、間欠塗布装置の電極合剤塗布ヘッド
４、乾燥機５上を走行した後、巻き取り軸６に巻き取ら
れる。メインロール３とシート１を挟んで対になる位置
に配置されているのはパルスジェネレータ２４であり、
シート１の走行速度検出に使用される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. Here, the manufacturing apparatus of the secondary battery will be described. In the battery manufacturing apparatus of this example, as shown in FIG. 1, a sheet 1, which is a base material, for example, a stretched aluminum foil, is wound around an unwinding shaft 2, and as shown by an arrow M1 in the figure. After being fed from the unwinding shaft 2 and running on the main roll 3, the electrode mixture applying head 4 of the intermittent applying device, and the dryer 5, it is wound on the winding shaft 6. The pulse generator 24 is disposed at a position that forms a pair with the main roll 3 and the sheet 1 interposed therebetween.
Used for detecting the traveling speed of the seat 1.
【００２９】図２で間欠塗布装置について詳しく説明す
る。間欠塗布装置の塗布ヘッド８とシャッタ９の間に電
極合剤からなる塗料１０を充填し、シャッタ９の開閉用
のサーボモータ１２とカム装置１３が設けられている。
シャッタ９の開放時を破線で示し、閉塞時を実線で示
す。The intermittent coating device will be described in detail with reference to FIG. A coating 10 made of an electrode mixture is filled between the coating head 8 and the shutter 9 of the intermittent coating device, and a servo motor 12 for opening and closing the shutter 9 and a cam device 13 are provided.
The opening time of the shutter 9 is indicated by a broken line, and the closing time is indicated by a solid line.
【００３０】間欠塗布装置は供給塗料流量を調節する連
続式自動バルブ１５、自動バルブ１５を動作させる電空
変換器２０、塗料ヘッド８内の塗料１０の液面高さを計
測するファイバーアナログセンサである塗料液面高さ検
出センサ１７、塗料液面高さ検出センサ１７の増幅器２
５、塗布部と未塗布部の長さを測定するためのファイバ
ーセンサからなる寸法測定センサ２２、その増幅器１８
から構成される。また、制御装置１９は図５の塗料液面
高さ制御ブロック図に示す通りである。The intermittent coating device is a continuous automatic valve 15 for adjusting the flow rate of the supplied paint, an electropneumatic converter 20 for operating the automatic valve 15, and a fiber analog sensor for measuring the liquid level of the paint 10 in the paint head 8. A coating liquid level detection sensor 17 and an amplifier 2 of the coating liquid level detection sensor 17
5. Dimension measuring sensor 22 composed of a fiber sensor for measuring the length of the coated portion and the uncoated portion, and its amplifier 18
Consists of The control device 19 is as shown in the coating liquid level control block diagram of FIG.
【００３１】塗布ヘッド８とシャッタ９の間には連続式
の自動バルブ１５を備えたパイプ１６から塗料が送られ
てくるが、その塗料供給量はシャッタ９の開放時の塗料
液面検出センサ１７により検出される塗料液面高さ検出
信号が増幅器１８により増幅されてシステムコントロー
ラ１９に入力され、液面高さ検出信号内値に応じて該コ
ントローラ１９が電空変換器２０を介して自動バルブ１
５を開閉制御してヘッド８内の塗料液面高さをコントロ
ールしている。Paint is sent between the coating head 8 and the shutter 9 from a pipe 16 provided with a continuous automatic valve 15. The amount of the paint supplied is determined by a paint level sensor 17 when the shutter 9 is opened. Is detected by the amplifier 18 and input to the system controller 19, and the controller 19 controls the automatic valve through the electropneumatic converter 20 in accordance with the value in the liquid level detection signal. 1
5 is controlled to open and close to control the coating liquid level in the head 8.
【００３２】また、寸法測定センサ２２で塗布部の長さ
（塗布寸法）を測定し、その設定値と比較を行い、塗布
部長が長いときはヘッド８内の塗料液面高さを低くし、
逆に塗布部長が短いときは液面を高くするように制御す
る。The length of the coating portion (coating size) is measured by the dimension measuring sensor 22 and compared with the set value. When the coating portion length is long, the coating liquid level in the head 8 is lowered.
Conversely, when the length of the coating section is short, control is performed so that the liquid level is raised.
【００３３】この塗布方式では、シャッタ９が開いたと
きに塗料の自重で塗料をヘッド８から吐出させて基材で
あるシート１上に塗料を塗布しているので、塗料の自重
の変化により塗料の液面の高さが変化すると、ヘッド８
から吐出する塗料の量が変化し、塗布寸法が変動する。In this coating method, when the shutter 9 is opened, the paint is discharged from the head 8 by its own weight to apply the paint on the sheet 1 as the base material. When the liquid level of the head 8 changes, the head 8
The amount of paint discharged from the nozzle changes, and the application size changes.
【００３４】間欠塗布は次のように行われる。シート１
の走行状態をパルスジェネレータ２４で検出し、その走
行距離（長さ）をシステムコントローラ１９に入力す
る。システムコントローラ１９は製品毎の塗布部長さと
未塗布部長さを記憶しており、その設定値に従い、パル
スジェネレータ２４での測定長さと比較演算を行いなが
ら、サーボモータ１２を回転させる。サーボモータ１２
が回転するとカム装置１３によりサーボモータ１２の回
転運動が往復運動に変換され、塗布ヘッド８のシャッタ
９が開閉される。この塗布ヘッド８のシャッタ９を開閉
させることにより、塗布ヘッド４の塗料１０がシート１
に図３（平面図）、図４（側面図）に示すように塗布部
と未塗布部を形成させる。The intermittent coating is performed as follows. Sheet 1
Is detected by the pulse generator 24, and the traveling distance (length) is input to the system controller 19. The system controller 19 stores the length of the coated portion and the length of the uncoated portion for each product, and rotates the servomotor 12 while performing a comparison operation with the measured length of the pulse generator 24 in accordance with the set values. Servo motor 12
Is rotated by the cam device 13, the rotational motion of the servo motor 12 is converted into a reciprocating motion, and the shutter 9 of the coating head 8 is opened and closed. By opening and closing the shutter 9 of the coating head 8, the coating material 10 of the coating head 4
Next, as shown in FIG. 3 (plan view) and FIG. 4 (side view), an applied portion and an uncoated portion are formed.
【００３５】次に塗布ヘッド８内の塗料の液面高さ制御
について図２と図５に基づき説明する。基本的には前述
のように、シート１の走行スピードに応じ、必要な塗料
流量を連続式の自動バルブ１５で調節する。また、シャ
ッタ９が開いている時のヘッド８内の塗料液面の高さを
塗料液面高さ検出センサ１７で計測し、設定値と比較を
行い、ヘッド８内の塗料液面高さが設定値になるよう
に、フィードバック値を自動バルブ１５に加える。この
フィードバック値は０〜１００％の比率を掛けることが
できる。Next, the control of the liquid level of the coating material in the coating head 8 will be described with reference to FIGS. Basically, as described above, the required paint flow rate is adjusted by the continuous automatic valve 15 according to the traveling speed of the seat 1. The height of the coating liquid level in the head 8 when the shutter 9 is open is measured by a coating liquid level sensor 17 and compared with a set value. A feedback value is added to the automatic valve 15 so as to be a set value. This feedback value can be multiplied by a ratio of 0-100%.
【００３６】塗料液面検出センサ１７で計測した出力値
と該センサ１７の塗料液面までの距離との関係を図６に
示す。さらに、シート１への塗布後の塗布部長を寸法測
定センサ２２で測定し、塗布寸法設定値と比較を行い、
液面高さ設定値に補正を加える。塗布部長が長いときは
ヘッド８内の塗料液面を低くし、逆に塗布部長が短いと
きは前記液面を高くするように制御する。この補正値に
はリミッターを設け、塗料液面はある設定値内の範囲で
制御される。FIG. 6 shows the relationship between the output value measured by the coating liquid level detection sensor 17 and the distance of the sensor 17 to the coating liquid level. Further, the length of the application section after application to the sheet 1 is measured by the dimension measurement sensor 22 and compared with the application dimension setting value.
Correct the liquid level setting. When the length of the application part is long, the coating liquid level in the head 8 is controlled to be low, and when the length of the application part is short, the liquid level is controlled to be high. A limiter is provided for this correction value, and the coating liquid level is controlled within a certain set value range.
【００３７】図８は従来制御のシート１上の塗布部長の
トレンドデータで、図７は本発明による制御の結果、得
られる前記塗布部長のトレンドデータである。本発明の
制御は立ち上がり後すぐに安定してバラツキが少ないこ
とが分かる。FIG. 8 shows the trend data of the coating section length on the sheet 1 under the conventional control, and FIG. 7 shows the trend data of the coating section length obtained as a result of the control according to the present invention. It can be seen that the control of the present invention is stable and has little variation immediately after startup.
【００３８】[0038]
【発明の効果】本発明は、以上に述べたごとく、間欠塗
布装置において、塗料供給量を連続的にフィードバック
制御して、高い塗布速度で決まった塗布パターンが正確
に得られる。こうして、生産性、歩留まり、品質の向上
のため塗料を塗布した製品のコストダウンができ、また
製品の性能と安定性が高くなる。As described above, according to the present invention, in the intermittent coating apparatus, the feed rate of the coating material is continuously controlled by feedback, so that a predetermined coating pattern can be accurately obtained at a high coating speed. In this way, the cost of a product coated with a paint can be reduced to improve productivity, yield, and quality, and the performance and stability of the product can be increased.
【図１】 本発明の実施の形態である電池の製造方法を
適用した電池製造装置を一例を示す模式図である。FIG. 1 is a schematic view showing an example of a battery manufacturing apparatus to which a battery manufacturing method according to an embodiment of the present invention is applied.
【図２】 本発明の実施の形態である電池の製造方法を
適用した電池製造装置の一例の間欠塗布部近傍の模式図
である。FIG. 2 is a schematic view of the vicinity of an intermittent application section of an example of a battery manufacturing apparatus to which the battery manufacturing method according to the embodiment of the present invention is applied.
【図３】 本発明の実施の形態である電池の製造方法を
適用した電池製造装置で塗布された平面図である。FIG. 3 is a plan view applied by a battery manufacturing apparatus to which the battery manufacturing method according to the embodiment of the present invention is applied.
【図４】 本発明の実施の形態である電池の製造方法を
適用した電池製造装置で塗布された側面図である。FIG. 4 is a side view applied by a battery manufacturing apparatus to which a battery manufacturing method according to an embodiment of the present invention is applied.
【図５】 本発明の実施の形態であるヘッド内の塗料液
面高さ制御ブロック図である。FIG. 5 is a block diagram of a coating liquid level control in a head according to an embodiment of the present invention.
【図６】 本発明に使用したレベルセンサの距離と出力
の関係である。FIG. 6 shows the relationship between the distance and the output of the level sensor used in the present invention.
【図７】 本発明の実施の形態のシート上の塗布長トレ
ンドデータである。FIG. 7 shows application length trend data on a sheet according to the embodiment of the present invention.
【図８】 従来技術のシート上の塗布長のトレンドデー
タである。FIG. 8 shows trend data of a coating length on a sheet according to a conventional technique.
【図９】 従来の電池の製造方法を適用した電池製造装
置の一例の間欠塗布部近傍の模式図である。FIG. 9 is a schematic view of the vicinity of an intermittent application section of an example of a battery manufacturing apparatus to which a conventional battery manufacturing method is applied.
【図１０】 従来技術のヘッド内の塗料液面高さと塗布
寸法の関係の一例である。FIG. 10 is an example of a relationship between a coating liquid level height in a head and a coating dimension according to a conventional technique.
【図１１】 従来技術の塗料の塗布スピードと寸法ばら
つきσを表した図である。FIG. 11 is a diagram showing a coating speed and a dimensional variation σ of a conventional paint.
【図１２】 リチウムイオン２次電池の構造を一部破断
して示す斜視図である。FIG. 12 is a perspective view showing a lithium ion secondary battery in a partially broken structure.
１ シート ２ 巻出し軸 ３ メインロール ４ 間欠塗布
装置の塗布ヘッド ５ 乾燥機 ６ 巻き取り
軸 ８ 塗布ヘッド ９ シャッタ １０ 塗料 １２ サーボ
モータ １３ カム装置 １５ 自動バ
ルブ １６ パイプ １７ 塗料液
面高さ検出センサ １８ 増幅器 １９ システ
ムコントローラ ２０ 電空変換器 ２２ 塗布寸
法測定センサ ２４ パルスジェネレータReference Signs List 1 sheet 2 unwinding shaft 3 main roll 4 coating head of intermittent coating device 5 dryer 6 take-up shaft 8 coating head 9 shutter 10 paint 12 servo motor 13 cam device 15 automatic valve 16 pipe 17 paint liquid level detection sensor 18 Amplifier 19 System controller 20 Electropneumatic converter 22 Coating size measurement sensor 24 Pulse generator
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ０５Ｄ 7/00 Ｂ０５Ｄ 7/00 Ａ // Ｈ０１Ｍ 10/40 Ｈ０１Ｍ 10/40 Ｚ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI B05D 7/00 B05D 7/00 A // H01M 10/40 H01M 10/40 Z
Claims (3)
部分を基材上に形成するために、基材上に間欠的に塗料
を塗布するための塗料を貯えたヘッドと、 ヘッド内の塗料の塗料液面の高さを測定する塗料液面測
定センサと、 基材上に交互に形成される塗料の塗布部長と未塗布部長
を検出する塗布寸法測定センサと、 該塗料液面測定センサで検出したヘッド内の塗料の液面
の高さ検出値と該液面の高さの設定値との比較によりヘ
ッド内へ供給する塗料供給量を制御し、かつ前記塗布寸
法測定センサで検出した塗布部長と未塗布部長をそれら
の設定値と比較して前記ヘッド内の塗料の塗料液面の高
さの測定により求めた塗料供給量を補正する制御装置と
を備えた間欠塗布装置。1. A head storing a paint for intermittently applying a paint on a base material to form an application part having a predetermined length and an uncoated part having a predetermined length on the base material; A coating liquid level sensor for measuring the height of the coating liquid level of the coating in the coating; a coating dimension measuring sensor for detecting the length of the coating portion and the uncoated portion of the coating that are alternately formed on the base material; The paint supply amount supplied into the head is controlled by comparing the detected value of the liquid level of the paint in the head detected by the measurement sensor with the set value of the liquid level, and the coating size measurement sensor An intermittent coating device comprising: a control device for comparing the detected length of the coated portion and the length of the uncoated portion with their set values and correcting the paint supply amount obtained by measuring the height of the coating liquid level of the paint in the head.
的に塗料を塗布するための制御装置の指令で開閉される
シャッタが設けられたことを特徴とする請求項１記載の
間欠塗布装置。2. The intermittent head according to claim 1, wherein the head storing the paint is provided with a shutter which is opened and closed by a command of a control device for intermittently applying the paint on the base material. Coating device.
ログタイプのセンサとしたことを特徴とする請求項１記
載の間欠塗布装置。3. The intermittent coating device according to claim 1, wherein the coating liquid level measuring sensor is a non-contact analog type sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624298A JP3893731B2 (en) | 1998-04-16 | 1998-04-16 | Intermittent application device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624298A JP3893731B2 (en) | 1998-04-16 | 1998-04-16 | Intermittent application device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11307087A true JPH11307087A (en) | 1999-11-05 |
| JP3893731B2 JP3893731B2 (en) | 2007-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10624298A Expired - Fee Related JP3893731B2 (en) | 1998-04-16 | 1998-04-16 | Intermittent application device |
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| Country | Link |
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| JP (1) | JP3893731B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001266841A (en) * | 2000-03-17 | 2001-09-28 | Sony Corp | Manufacturing method of battery |
| JP2001266943A (en) * | 2000-03-17 | 2001-09-28 | Sony Corp | Manufacturing method of battery and application device used for it |
| US6585846B1 (en) | 2000-11-22 | 2003-07-01 | 3M Innovative Properties Company | Rotary converting apparatus and method for laminated products and packaging |
| US6830846B2 (en) | 2001-11-29 | 2004-12-14 | 3M Innovative Properties Company | Discontinuous cathode sheet halfcell web |
| WO2006064646A1 (en) * | 2004-11-26 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | Intermittent coating method for thin film |
| CN103958071A (en) * | 2011-09-29 | 2014-07-30 | 佛克有限及两合公司 | Method and device for producing package for group of smokable articles |
| KR20200011228A (en) * | 2018-07-24 | 2020-02-03 | 주식회사 엘지화학 | Device for measuring length of electrode active material and manufacturing system for electrode of secondary battery comprising the same |
| WO2020129570A1 (en) * | 2018-12-18 | 2020-06-25 | パナソニックＩｐマネジメント株式会社 | Intermittent valve device and intermittent coating device |
-
1998
- 1998-04-16 JP JP10624298A patent/JP3893731B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001266841A (en) * | 2000-03-17 | 2001-09-28 | Sony Corp | Manufacturing method of battery |
| JP2001266943A (en) * | 2000-03-17 | 2001-09-28 | Sony Corp | Manufacturing method of battery and application device used for it |
| JP4524510B2 (en) * | 2000-03-17 | 2010-08-18 | ソニー株式会社 | Battery manufacturing method and coating apparatus used therefor |
| US6585846B1 (en) | 2000-11-22 | 2003-07-01 | 3M Innovative Properties Company | Rotary converting apparatus and method for laminated products and packaging |
| US6830846B2 (en) | 2001-11-29 | 2004-12-14 | 3M Innovative Properties Company | Discontinuous cathode sheet halfcell web |
| WO2006064646A1 (en) * | 2004-11-26 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | Intermittent coating method for thin film |
| US7842332B2 (en) | 2004-11-26 | 2010-11-30 | Panasonic Corporation | Method for intermittently applying thin-film coatings |
| CN103958071A (en) * | 2011-09-29 | 2014-07-30 | 佛克有限及两合公司 | Method and device for producing package for group of smokable articles |
| JP2015501258A (en) * | 2011-09-29 | 2015-01-15 | フォッケ・ウント・コンパニー（ゲゼルシャフト・ミト・べシュレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシャフト） | Method and facility for manufacturing a package for a group of smokable products |
| US9988164B2 (en) | 2011-09-29 | 2018-06-05 | Focke & Co. (Gmbh & Co. Kg) | Method and device for producing a package for a group of smokable articles |
| KR20200011228A (en) * | 2018-07-24 | 2020-02-03 | 주식회사 엘지화학 | Device for measuring length of electrode active material and manufacturing system for electrode of secondary battery comprising the same |
| WO2020129570A1 (en) * | 2018-12-18 | 2020-06-25 | パナソニックＩｐマネジメント株式会社 | Intermittent valve device and intermittent coating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3893731B2 (en) | 2007-03-14 |
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