JP6974223B2 - Coating equipment and coating method - Google Patents

Coating equipment and coating method Download PDF

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JP6974223B2
JP6974223B2 JP2018047807A JP2018047807A JP6974223B2 JP 6974223 B2 JP6974223 B2 JP 6974223B2 JP 2018047807 A JP2018047807 A JP 2018047807A JP 2018047807 A JP2018047807 A JP 2018047807A JP 6974223 B2 JP6974223 B2 JP 6974223B2
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roller
base material
light
continuum
coating
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JP2019155305A (en
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秀一 相良
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Screen Holdings Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
    • B05C11/1021—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target responsive to presence or shape of target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N2021/8924—Dents; Relief flaws

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Coating Apparatus (AREA)
  • Replacement Of Web Rolls (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

この発明は、長尺状の第１基材の後端部に長尺状の第２基材の先端部を接続してなる連続体を搬送経路に沿って搬送しながらノズルから塗工液を供給して連続体に塗工膜を形成する塗工装置および塗工方法に関するものである。 In the present invention, the coating liquid is transferred from the nozzle while transporting a continuum formed by connecting the tip end portion of the long second base material to the rear end portion of the long first base material along the transport path. It relates to a coating device and a coating method for supplying and forming a coating film on a continuum.

塗工装置として、集電体として機能する金属などの導電体シートや表面に金属薄膜が形成された樹脂シートなどの長尺状の基材をロール・トゥ・ロール方式で所定の搬送経路に沿って搬送しながら基材に塗工膜を形成する装置が知られている。この塗工装置では、塗工膜の形成を連続的に行うために、例えば特許文献１に記載されているように、基材をロール状に巻回した原反を２個用意しておき、一方の原反における基材の残量が少なくなると、基材の供給源をもう一方の原反に切り替えている。この切替動作を実行するために、基材の切替機能を有する基材供給部が設けられている。基材供給部には、基材が巻かれた予備の原反が設けられている。そして、一の原反に巻かれた基材が当該一の原反から送り出されることによって基材の残量が減少すると、一の原反から送り出される基材と、予備の原反に巻かれた基材とを両面テープなどにより接続させて基材同士をつなぎ合わせた基材の連続体を形成して搬送させる。このことにより、基材供給部から供給される基材を、一の原反に巻かれた基材から、予備の原反に巻かれた基材に切り替え、基材を連続的に供給可能となっている。 As a coating device, a long base material such as a conductor sheet such as metal that functions as a current collector or a resin sheet having a metal thin film formed on the surface is rolled-to-roll along a predetermined transport path. A device for forming a coating film on a base material while being transported is known. In this coating apparatus, in order to continuously form a coating film, for example, as described in Patent Document 1, two raw fabrics in which a base material is wound in a roll shape are prepared. When the remaining amount of the base material in one raw fabric becomes low, the source of the base material is switched to the other raw fabric. In order to execute this switching operation, a base material supply unit having a base material switching function is provided. The base material supply unit is provided with a spare raw fabric around which the base material is wound. Then, when the remaining amount of the base material is reduced by sending out the base material wound on the one raw fabric from the one original fabric, the base material is wound on the base material sent out from the one original fabric and the spare original fabric. The base material is connected to the base material with double-sided tape or the like to form a continuous body of the base materials in which the base materials are connected to each other and conveyed. As a result, the base material supplied from the base material supply unit can be switched from the base material wound on one raw fabric to the base material wound on the spare raw fabric, and the base material can be continuously supplied. It has become.

特開２０１４−４６３０３号公報Japanese Unexamined Patent Publication No. 2014-46303

上記したように２つの基材を接続する場合、後で詳述する図４Ｃに示すように一の原反から送り出される基材の後端部と、予備の原反から送り出される基材の先端部とを重畳させ、当該重畳領域で両面テープなどによる基材接続を行っている。この際に、２つの基材を接続した連続体に皺が入ることがある。特に、近年基材の薄膜化が進んでいる。例えばリチウムイオン二次電池のような電池用電極を製造するために銅箔を基材として用いる場合、基材の厚みは数ミクロン程度であり、２つの基材のつなぎ目（重畳領域）に皺が入り易くなっている。 When connecting two base materials as described above, as shown in FIG. 4C, which will be described in detail later, the rear end portion of the base material sent out from one raw fabric and the tip of the base material sent out from the spare raw fabric. The parts are superposed on each other, and the base material is connected with double-sided tape or the like in the superposed area. At this time, wrinkles may occur in the continuum connecting the two base materials. In particular, in recent years, the thickness of the base material has been reduced. For example, when a copper foil is used as a base material for manufacturing a battery electrode such as a lithium ion secondary battery, the thickness of the base material is about several microns, and wrinkles are formed at the joint (superimposition region) of the two base materials. It is easy to enter.

ここで、皺が入ったまま連続体をノズルから塗工液が供給される塗工液供給位置に搬送すると、皺がノズルと干渉することがあり、連続体（基材）がノズルに巻き込まれて破断することがある。また、ノズルの先端部にダメージを与えてしまうこともある。したがって、このような問題が発生するのを防止するためには、２つの基材を接続して連続体を形成した際に２つの基材のつなぎ目（重畳領域）に入ってしまった皺を検知し、その検知情報に基づいてノズルを塗工液供給位置から退避させるのが好適である。 Here, if the continuum is conveyed from the nozzle to the coating liquid supply position where the coating liquid is supplied with wrinkles, the wrinkles may interfere with the nozzle, and the continuum (base material) is caught in the nozzle. May break. In addition, the tip of the nozzle may be damaged. Therefore, in order to prevent such a problem from occurring, it is possible to detect wrinkles that have entered the joint (superimposed region) of the two base materials when the two base materials are connected to form a continuum. However, it is preferable to retract the nozzle from the coating liquid supply position based on the detection information.

しかしながら、従来においては皺を高精度で検知するための具体的な技術は提供されておらず、オペレータによる目視観察に頼らざるを得なかった。つまり、オペレータの目でつなぎ目（重畳領域）を確認して、手動でノズルを塗工液供給位置から退避する一方、つなぎ目が塗工液供給位置を通り過ぎるのを確認した後、再接近させて塗工を再開していた。その結果、２４時間連続的に自動生産する工場では上記塗工装置を使用することができなかった。また、基材の連続搬送は継続されているため、オペレータによるマニュアル動作を伴う分だけ塗工ロスとなってしまい、これが生産効率の低下を招く要因のひとつとなっていた。 However, in the past, no specific technique for detecting wrinkles with high accuracy has been provided, and it has been necessary to rely on visual observation by an operator. In other words, while checking the joint (superimposed area) with the operator's eyes and manually retracting the nozzle from the coating liquid supply position, after confirming that the joint passes through the coating liquid supply position, reapproach and apply. The construction was resumed. As a result, the above coating device could not be used in the factory that automatically produces continuously for 24 hours. In addition, since the continuous transfer of the base material is continued, coating loss is caused by the amount of manual operation by the operator, which is one of the factors that cause a decrease in production efficiency.

この発明は上記課題に鑑みなされたものであり、長尺状の第１基材の後端部に対して長尺状の第２基材の先端部を接続してなる連続体を搬送経路に沿って搬送しながらノズルから塗工液を供給して前記連続体に塗工膜を形成する塗工装置において、基材接続時において連続体に形成された皺を高精度に検知することができる技術を提供することを目的とする。 The present invention has been made in view of the above problems, and a continuum formed by connecting the tip end portion of the long second base material to the rear end portion of the long first base material is used as a transport path. In a coating device that supplies a coating liquid from a nozzle to form a coating film on the continuum while being conveyed along the substrate, wrinkles formed on the continuum can be detected with high accuracy when the base material is connected. The purpose is to provide technology.

この発明の一の態様は、長尺状の第１基材の後端部に対して長尺状の第２基材の先端部を接続位置で接続してなる連続体を搬送経路に沿って搬送しながら塗工液供給位置でノズルから塗工液を供給して連続体に塗工膜を形成する塗工装置であって、搬送経路において塗工液供給位置と接続位置との間に位置する中間位置で搬送経路に沿って搬送される連続体に係合して支持する支持ローラと、支持ローラに支持された連続体の表面に沿って光ビームを照射する照射部と、連続体を挟んで照射部と対向して配置されて光ビームを受光する受光部と、受光部により受光される光ビームの受光量の変化に基づいて連続体での皺の発生を検知する皺検知部とを備え、照射部は、支持ローラの一方端部側から他方端部側に光ビームを発光する発光素子と、発光素子を保持しながら支持ローラの一方端部でローラ表面と係合して支持ローラの回転軸と直交する直交方向においてローラ表面から発光素子までの距離を皺検知高さに維持する発光保持機構とを有し、受光部は、光ビームを受光する受光素子と、受光素子を保持しながら支持ローラの他方端部でローラ表面と係合して直交方向においてローラ表面から受光素子までの距離を皺検知高さに維持する受光保持機構とを有することを特徴としている。 One aspect of the present invention is to connect a continuous body in which the tip end portion of the long second base material is connected to the rear end portion of the long first base material at a connection position along a transport path. A coating device that supplies coating liquid from a nozzle at the coating liquid supply position while transporting to form a coating film on a continuous body, and is located between the coating liquid supply position and the connection position in the transport path. A support roller that engages and supports a continuum that is transported along a transport path at an intermediate position, an irradiation unit that irradiates a light beam along the surface of the continuum supported by the support roller, and a continuum. A light receiving unit that is arranged so as to face the irradiation unit and receives a light beam, and a wrinkle detection unit that detects the occurrence of wrinkles in a continuous body based on a change in the amount of light received by the light receiving unit. The irradiation unit is supported by engaging with a light emitting element that emits a light beam from one end side to the other end side of the support roller and the roller surface at one end of the support roller while holding the light emitting element. It has a light emitting holding mechanism that maintains the distance from the roller surface to the light emitting element at the wrinkle detection height in the direction orthogonal to the rotation axis of the roller, and the light receiving unit includes a light receiving element that receives a light beam and a light receiving element. It is characterized by having a light receiving holding mechanism that engages with the roller surface at the other end of the supporting roller while holding and maintains the distance from the roller surface to the light receiving element at the wrinkle detection height in the orthogonal direction.

また、この発明の他の態様は、長尺状の第１基材の後端部に対して長尺状の第２基材の先端部を接続位置で接続してなる連続体を搬送経路に沿って搬送しながら塗工液供給位置でノズルから塗工液を供給して連続体に塗工膜を形成する塗工方法であって、搬送経路において塗工液供給位置と接続位置との間に配置された支持ローラに対して搬送経路に沿って搬送される連続体を係合させて支持する工程と、支持ローラに支持された連続体の表面に沿って照射部が光ビームを支持ローラの一方端部側から他方端部側に照射するとともに、支持ローラの他方端部側で受光部が光ビームを受光して光ビームの受光量を求める工程と、光ビームの受光量の変化に基づいて連続体での皺の発生を検知する工程とを備え、照射部は、支持ローラの一方端部側から他方端部側に光ビームを発光する発光素子と、発光素子を保持しながら支持ローラの一方端部でローラ表面と係合して支持ローラの回転軸と直交する直交方向においてローラ表面から発光素子までの距離を皺検知高さに維持する発光保持機構とを有し、受光部は、光ビームを受光する受光素子と、受光素子を保持しながら支持ローラの他方端部でローラ表面と係合して直交方向においてローラ表面から受光素子までの距離を皺検知高さに維持する受光保持機構とを有することを特徴としている。 Further, in another aspect of the present invention, a continuum formed by connecting the tip end portion of the long second base material to the rear end portion of the long first base material at a connection position is used as a transport path. It is a coating method in which the coating liquid is supplied from the nozzle at the coating liquid supply position while being conveyed along the line to form a coating film on the continuous body, and is between the coating liquid supply position and the connection position in the transport path. The process of engaging and supporting the continuous body transported along the transport path with the support roller arranged in the support roller, and the irradiation unit supporting the light beam along the surface of the continuous body supported by the support roller. In the process of irradiating from one end side to the other end side and the light receiving part receiving a light beam on the other end side of the support roller to obtain the light receiving amount of the light beam, and the change in the light receiving amount of the light beam. The irradiation unit includes a step of detecting the occurrence of wrinkles in the continuous body based on the light emitting element that emits a light beam from one end side to the other end side of the support roller, and supports the irradiation unit while holding the light emitting element. It has a light emitting holding mechanism that engages with the roller surface at one end of the roller and maintains the distance from the roller surface to the light emitting element at the wrinkle detection height in the direction orthogonal to the rotation axis of the supporting roller. Engages the light receiving element that receives the light beam and the roller surface at the other end of the support roller while holding the light receiving element, and maintains the distance from the roller surface to the light receiving element at the wrinkle detection height in the orthogonal direction. It is characterized by having a light receiving holding mechanism.

このように構成された発明では、第１基材の後端部に対して第２基材の先端部が接続位置で接続されて連続体が形成され、搬送経路に沿って搬送される。このように第１基材と第２基材とを接続した際に連続体に対して皺が発生することがある。そこで、搬送経路に沿って搬送される連続体を支持ローラで支持しながら連続体の表面に沿って光ビームを支持ローラの一方端部側から他方端部側に照射する。ここで、連続体に皺が存在するときには、光ビームの一部または全部が皺に遮光され、受光部での光ビームの受光量が減少して受光量が変化する。そこで、本発明では受光量の変化に基づいて皺を検知している。 In the invention configured as described above, the tip end portion of the second base material is connected to the rear end portion of the first base material at the connection position to form a continuum, which is transported along the transport path. When the first base material and the second base material are connected in this way, wrinkles may occur on the continuum. Therefore, while the continuum transported along the transport path is supported by the support roller, the light beam is irradiated from one end side to the other end side of the support roller along the surface of the continuum. Here, when wrinkles are present in the continuum, a part or all of the light beam is shielded by the wrinkles, the light receiving amount of the light beam at the light receiving portion decreases, and the light receiving amount changes. Therefore, in the present invention, wrinkles are detected based on the change in the amount of received light.

以上のように、支持ローラに支持された連続体の表面に沿って光ビームを照射するとともに皺により光ビームの一部または全部が遮光されることによる光ビームの受光量の変化に基づいて連続体での皺の発生を検知している。したがって、連続体に形成された皺を高精度に検知することができる。 As described above, the light beam is continuously irradiated along the surface of the continuum supported by the support roller, and is continuously based on the change in the amount of light received by the light beam due to the fact that part or all of the light beam is shielded by wrinkles. The occurrence of wrinkles on the body is detected. Therefore, wrinkles formed in the continuum can be detected with high accuracy.

本発明にかかる塗工装置の第１実施形態を示す図である。It is a figure which shows the 1st Embodiment of the coating apparatus which concerns on this invention. 図１に示す塗工装置の部分拡大斜視図である。It is a partially enlarged perspective view of the coating apparatus shown in FIG. 1. 図１に示す塗工装置の電気的構成を示すブロック図である。It is a block diagram which shows the electric structure of the coating apparatus shown in FIG. 巻出部での連続体の形成動作の第１ステップを模式的に示す図である。It is a figure which shows typically the 1st step of the formation operation of the continuum in the unwinding part. 巻出部での連続体の形成動作の第２ステップを模式的に示す図である。It is a figure which shows typically the 2nd step of the formation operation of the continuum in the unwinding part. 巻出部での連続体の形成動作の第３ステップを模式的に示す図である。It is a figure which shows typically the 3rd step of the formation operation of the continuum in the unwinding part. 巻出部での連続体の形成動作の第４ステップを模式的に示す図である。It is a figure which shows typically the 4th step of the formation operation of the continuum in the unwinding part. 本発明にかかる塗工装置の第２実施形態で採用された照射部の構成を示す模式図である。It is a schematic diagram which shows the structure of the irradiation part adopted in the 2nd Embodiment of the coating apparatus which concerns on this invention.

図１は本発明にかかる塗工装置の第１実施形態を示す図である。また、図２は図１に示す塗工装置の部分拡大斜視図である。さらに、図３は図１に示す塗工装置の電気的構成を示すブロック図である。この塗工装置１００は、ロール・トゥ・ロール方式で搬送されるシート状の基材Ｓに対してペースト状塗工液を塗工する装置であり、例えばリチウムイオン二次電池のような電池用電極の製造に用いることのできるものである。以下の各図における方向を統一的に示すために、図１に示すようにＸＹＺ直交座標系を設定する。ここでＸＹ平面は水平面であり、Ｘ軸は基材Ｓの幅方向に延びる軸である一方、Ｙ軸はＸ軸と直交し、基材Ｓの搬送方向に延びる軸である。Ｚ軸は鉛直軸を表し、（−Ｚ）方向が鉛直下向き方向を表す。 FIG. 1 is a diagram showing a first embodiment of the coating apparatus according to the present invention. Further, FIG. 2 is a partially enlarged perspective view of the coating apparatus shown in FIG. Further, FIG. 3 is a block diagram showing an electrical configuration of the coating apparatus shown in FIG. The coating device 100 is a device that coats a paste-like coating liquid on a sheet-shaped base material S conveyed by a roll-to-roll method, and is for a battery such as a lithium ion secondary battery. It can be used in the manufacture of electrodes. In order to show the directions in each of the following figures in a unified manner, the XYZ Cartesian coordinate system is set as shown in FIG. Here, the XY plane is a horizontal plane, and the X axis is an axis extending in the width direction of the base material S, while the Y axis is an axis orthogonal to the X axis and extending in the transport direction of the base material S. The Z axis represents the vertical axis, and the (−Z) direction represents the vertical downward direction.

この塗工装置１００は、塗工液を基材Ｓに供給して塗布する塗布部１を有している。この塗布部１は、塗布すべき塗工液を内部に貯留するタンク１１と、該タンク１１から供給される塗工液を吐出する１本のノズル１２とを備えている。ノズル１２はＸ方向に延設されており、Ｘ方向に延びる吐出口（図示省略）から塗工液を吐出可能となっている。このノズル１２は送液系１３を介してタンク１１と接続されている。送液系１３は図１に示すようにタンク１１とノズル１２との間を接続する配管１３１と、該配管１３１の途中に介挿されて配管１３１に塗工液を流通させるポンプ１３２とを有している。ポンプ１３２は、高粘度の塗工液を安定した流量で送出することのできるものであることが望ましい。このようなポンプとしては例えばねじポンプを用いることができ、例えば一軸ねじポンプの一種であるモーノポンプを好適に適用することができる。ポンプ１３２の動作は制御ユニット２により制御され、ノズル１２からの塗工液の吐出および吐出停止を切替可能となっている。 The coating device 100 has a coating unit 1 that supplies a coating liquid to the base material S to apply the coating liquid. The coating unit 1 includes a tank 11 for storing the coating liquid to be applied inside, and one nozzle 12 for discharging the coating liquid supplied from the tank 11. The nozzle 12 is extended in the X direction, and the coating liquid can be discharged from a discharge port (not shown) extending in the X direction. The nozzle 12 is connected to the tank 11 via a liquid feeding system 13. As shown in FIG. 1, the liquid feeding system 13 has a pipe 131 connecting between the tank 11 and the nozzle 12, and a pump 132 inserted in the middle of the pipe 131 to circulate the coating liquid through the pipe 131. doing. It is desirable that the pump 132 is capable of delivering a highly viscous coating liquid at a stable flow rate. As such a pump, for example, a screw pump can be used, and for example, a mono pump, which is a kind of uniaxial screw pump, can be preferably applied. The operation of the pump 132 is controlled by the control unit 2, and it is possible to switch between discharging and stopping the coating liquid from the nozzle 12.

ノズル１２の吐出口と対向する位置に基材Ｓが搬送ユニット３により所定の搬送経路ＰＴに沿って送り込まれる。搬送ユニット３は基材Ｓを巻き出す巻出部３１を有している。巻出部３１では、長尺シート状の基材Ｓａをロール状に巻き取ってなる原反３１１ａと、長尺シート状の基材Ｓｂをロール状に巻き取ってなる原反３１１ｂが２個セットされている。そして、一方の原反３１１ａにおける基材Ｓａの残量が十分にある間、巻出部３１は原反３１１ａから基材Ｓａを上記基材Ｓとして巻き出す。また、原反３１１ａでの基材Ｓａの残量が少なくなると、他方の原反３１１ｂから基材Ｓｂを巻き出すとともに当該基材Ｓｂの先端部を原反３１１ａからの基材Ｓａの後端部と接続して連続体を形成し、これを上記基材Ｓとして連続的に塗布部１に向けて巻出可能となっている。なお、巻出部３１の構成および動作については後で詳述する。 The base material S is fed by the transport unit 3 to a position facing the discharge port of the nozzle 12 along a predetermined transport path PT. The transport unit 3 has an unwinding portion 31 for unwinding the base material S. In the unwinding portion 31, a set of two raw fabrics 311a made by winding a long sheet-shaped base material Sa into a roll and a raw fabric 311b made by winding a long sheet-shaped base material Sb into a roll shape. Has been done. Then, while the remaining amount of the base material Sa in one of the raw fabrics 311a is sufficient, the unwinding portion 31 unwinds the base material Sa from the raw fabric 311a as the base material S. Further, when the remaining amount of the base material Sa in the raw fabric 311a becomes low, the base material Sb is unwound from the other raw fabric 311b and the tip end portion of the base material Sb is the rear end portion of the base material Sa from the raw fabric 311a. To form a continuous body, which can be continuously unwound toward the coating portion 1 as the base material S. The configuration and operation of the unwinding unit 31 will be described in detail later.

搬送ユニット３は、巻出部３１から巻き出され、塗布部１を経由して搬送される基材Ｓを巻き取るために、複数の搬送ローラ３２ａ、３２ｂ、バックアップローラ３３および巻取ローラ３４を有している。すなわち、巻出部３１からの基材Ｓは搬送ローラ３２ａ、３２ｂを介してバックアップローラ３３に搬送され、バックアップローラ３３の表面に巻き掛けられる。また、バックアップローラ３３の表面を通過した基材Ｓは巻取ローラ３４に向けて搬送され、巻取ローラ３４により巻き取られる。なお、本実施形態では、バックアップローラ３３および巻取ローラ３４の間においては、基材Ｓは略平坦な姿勢を保って搬送されており、このときの基材Ｓの搬送方向Ｄｓは（＋Ｙ）方向である。 The transport unit 3 includes a plurality of transport rollers 32a and 32b, a backup roller 33, and a take-up roller 34 in order to wind up the base material S unwound from the unwinding portion 31 and transported via the coating portion 1. Have. That is, the base material S from the unwinding portion 31 is conveyed to the backup roller 33 via the conveying rollers 32a and 32b, and is wound around the surface of the backup roller 33. Further, the base material S that has passed through the surface of the backup roller 33 is conveyed toward the take-up roller 34 and is taken up by the take-up roller 34. In the present embodiment, the base material S is transported between the backup roller 33 and the take-up roller 34 while maintaining a substantially flat posture, and the transport direction Ds of the base material S at this time is (+ Y). The direction.

つまり、搬送ユニット３は、塗布対象物である基材Ｓを支持して保持する手段としての機能およびこれを搬送する手段としての機能を有する。搬送ユニット３はさらに、制御ユニット２からの制御指令に応じて、巻出部３１の各部を駆動する巻出駆動機構３５と巻取ローラ３４を回転駆動させる巻取駆動機構３６を有している（図３）。 That is, the transport unit 3 has a function as a means for supporting and holding the base material S, which is an object to be coated, and a function as a means for transporting the base material S. The transport unit 3 further has a take-up drive mechanism 35 for driving each part of the unwinding unit 31 and a take-up drive mechanism 36 for rotationally driving the take-up roller 34 in response to a control command from the control unit 2. (Fig. 3).

このように搬送ユニット３により支持・搬送される基材Ｓの主面のうち、一方面がバックアップローラ３３に当接している部分の他方面に対向するように、ノズル１２が配置されている。言い換えれば、ノズル１２と対向配置されたバックアップローラ３３の表面に基材Ｓが巻き掛けられることで、基材Ｓがノズル１２と対向する。ノズル１２から吐出される塗工液が基材Ｓの表面に塗布される。基材Ｓが矢印Ｄｓ方向に搬送されることで、ノズル１２を基材Ｓに対して相対的に走査移動させながら塗工液を基材Ｓに塗布することができる。基材Ｓ表面のうち、裏面側がバックアップローラ３３に当接する領域にノズル１２を対向させた状態で塗工液を塗布することにより、所定の塗工液供給位置Ｐ２に位置決めされたノズル１２と基材表面とのギャップを安定に維持しながら塗布を行うことができる。また、本実施形態では、ノズル１２は上記塗工液供給位置Ｐ２と塗工液供給位置Ｐ２から反バックアップローラ側に離間した離間位置との間で移動可能に構成されるとともにノズル移動機構１４（図３）と接続されている。このノズル移動機構１４が制御ユニット２からの移動指令に応じて作動することでノズル１２は塗工液供給位置Ｐ２と離間位置に選択的に位置決めされる。 The nozzle 12 is arranged so that one of the main surfaces of the base material S supported and conveyed by the transfer unit 3 faces the other surface of the portion in contact with the backup roller 33. In other words, the base material S is wound around the surface of the backup roller 33 arranged to face the nozzle 12, so that the base material S faces the nozzle 12. The coating liquid discharged from the nozzle 12 is applied to the surface of the base material S. By transporting the base material S in the direction of the arrow Ds, the coating liquid can be applied to the base material S while the nozzle 12 is moved by scanning relative to the base material S. By applying the coating liquid in a state where the nozzle 12 faces the region of the front surface of the base material S where the back surface side abuts on the backup roller 33, the nozzle 12 and the base are positioned at the predetermined coating liquid supply position P2. The coating can be performed while maintaining a stable gap with the surface of the material. Further, in the present embodiment, the nozzle 12 is configured to be movable between the coating liquid supply position P2 and the separation position separated from the coating liquid supply position P2 toward the anti-backup roller side, and the nozzle movement mechanism 14 ( It is connected to FIG. 3). When the nozzle moving mechanism 14 operates in response to a movement command from the control unit 2, the nozzle 12 is selectively positioned at a position separated from the coating liquid supply position P2.

塗工液供給位置Ｐ２に位置決めされたノズル１２の吐出口から一定量で連続的に塗工液が吐出されると、基材Ｓの表面には塗工液によるウェット膜（図示省略）がＹ方向に延びて形成される。ここで例えば、集電体として機能する金属などの導電体シートを基材Ｓとして用い、塗工液として活物質材料を含むペーストを用いることにより、集電体層の表面に活物質層を積層してなる電池用電極を製造することが可能である。このような塗工液は一般に比較的高粘度であり、例えばせん断速度１０ｓ-1における粘度が５０Ｐａ・ｓないし３００Ｐａ・ｓ程度のものを用いることができる。また、基材Ｓとしては、例えば樹脂シートの表面に金属薄膜が形成されたものであってもよい。 When a constant amount of coating liquid is continuously discharged from the ejection port of the nozzle 12 positioned at the coating liquid supply position P2, a wet film (not shown) due to the coating liquid is formed on the surface of the base material S. It is formed to extend in the direction. Here, for example, by using a conductor sheet such as a metal that functions as a current collector as the base material S and using a paste containing the active material as the coating liquid, the active material layer is laminated on the surface of the current collector layer. It is possible to manufacture electrodes for batteries. Such a coating liquid generally has a relatively high viscosity, and for example, one having a viscosity of about 50 Pa · s to 300 Pa · s at a shear rate of 10 s-1 can be used. Further, the base material S may be, for example, a metal thin film formed on the surface of a resin sheet.

また、搬送ユニット３による基材Ｓの搬送方向Ｄｓにおいて、バックアップローラ３３よりも下流側であって巻取ローラ３４よりも上流側の位置に、硬化ユニット４が設けられている。硬化ユニット４は、その内部に通送される基材Ｓに形成されたウェット膜に対し例えば乾燥空気、熱風、赤外線等を供給することで塗工液の溶媒成分の揮発を促進し、ウェット膜を乾燥硬化させて塗工膜を形成する。塗工液が特定の電磁波に感応して硬化する材料を含むものである場合には、当該電磁波を塗工液に照射するように構成されてもよい。基材Ｓの搬送経路に沿った硬化ユニット４の長さは、塗工液の硬化時間に対応する。 Further, the curing unit 4 is provided at a position downstream of the backup roller 33 and upstream of the winding roller 34 in the transport direction Ds of the base material S by the transport unit 3. The curing unit 4 promotes the volatilization of the solvent component of the coating liquid by supplying, for example, dry air, hot air, infrared rays, etc. to the wet film formed on the base material S transmitted inside the wet film. Is dried and cured to form a coating film. If the coating liquid contains a material that cures in response to a specific electromagnetic wave, it may be configured to irradiate the coating liquid with the electromagnetic wave. The length of the curing unit 4 along the transport path of the base material S corresponds to the curing time of the coating liquid.

このように塗工装置１００では、搬送経路ＰＴに沿って基材Ｓを搬送方向Ｄｓに搬送しつつ塗工膜を連続的に形成しながら、一方の原反３１１ａにおける基材Ｓａの残量が少なくなると、巻出部３１により基材Ｓａの後端部に他方の原反３１１ｂからの基材Ｓｂを接続してなる連続体を基材Ｓとして連続的に供給する。 As described above, in the coating apparatus 100, the coating film is continuously formed while the base material S is transported in the transport direction Ds along the transport path PT, and the remaining amount of the base material Sa in one of the raw fabrics 311a is reduced. When the amount is reduced, a continuum formed by connecting the base material Sb from the other original fabric 311b to the rear end portion of the base material Sa by the unwinding portion 31 is continuously supplied as the base material S.

この巻出部３１では、図１に示すように巻出ローラ３１２ａ、補助ローラ３１３ａ、巻出ローラ３１２ｂおよび補助ローラ３１３ｂが幅方向Ｘに延びる回動軸３１４ａを中心に等角度間隔（９０゜）で放射状に配置されるとともに、回動軸３１４ａまわりに回動自在に構成されており、ターレット機構３１４が構成されている。ターレット機構３１４の回動軸３１４ａは巻出駆動機構３５と接続され、巻出駆動機構３５によりターレット機構３１４が図１の紙面において反時計回りに回動されることによって後で図４Ａ〜４Ｄを参照しつつ詳述するように基材切替を行う。 In the unwinding portion 31, as shown in FIG. 1, the unwinding roller 312a, the auxiliary roller 313a, the unwinding roller 312b, and the auxiliary roller 313b are spaced at equal angles (90 °) about the rotation shaft 314a extending in the width direction X. The turret mechanism 314 is configured by being radially arranged and rotatably configured around the rotating shaft 314a. The rotation shaft 314a of the turret mechanism 314 is connected to the unwinding drive mechanism 35, and the unwinding drive mechanism 35 rotates the turret mechanism 314 counterclockwise on the paper surface of FIG. The base material is switched as described in detail with reference to it.

また、基材切替を行う際には、残量が少なくなった原反３１１ａから基材Ｓａを切り離す切断動作と、原反３１１ａから切り離された基材Ｓａの後端部と原反３１１ｂから巻き出された基材Ｓｂの先端部とを接続する接続動作とを実行する。そのために、本実施形態では切断機構３１５と押付機構３１６とが設けられている。 Further, when switching the base material, the cutting operation of separating the base material Sa from the raw fabric 311a having a low remaining amount, and the rear end portion of the base material Sa separated from the raw fabric 311a and the raw fabric 311 b A connection operation for connecting the tip of the unwound base material Sb is performed. Therefore, in this embodiment, a cutting mechanism 315 and a pressing mechanism 316 are provided.

切断機構３１５は、幅方向Ｘに延設された回動軸３１５ａまわりに回動自在なアーム部材３１５ｂと、アーム部材３１５ｂの先端部に取り付けられたカッター部材３１５ｃとを有している。そして、切断機構３１５の回動軸３１５ａは巻出駆動機構３５と接続され、巻出駆動機構３５によりアーム部材３１５ｂが図１の紙面において時計回りに回動されることでカッター部材３１５ｃが待機位置（図１中の実線位置）から切断位置（図４Ｂの実線位置）に移動して基材Ｓａを切断する。 The cutting mechanism 315 has an arm member 315b that is rotatable around a rotation shaft 315a extending in the width direction X, and a cutter member 315c attached to the tip of the arm member 315b. Then, the rotation shaft 315a of the cutting mechanism 315 is connected to the unwinding drive mechanism 35, and the arm member 315b is rotated clockwise on the paper surface of FIG. 1 by the unwinding drive mechanism 35, so that the cutter member 315c is in the standby position. The base material Sa is cut by moving from (the solid line position in FIG. 1) to the cutting position (solid line position in FIG. 4B).

押付機構３１６は、幅方向Ｘに延設された回動軸３１６ａまわりに回動自在なアーム部材３１６ｂと、アーム部材３１６ｂの先端部に取り付けられた押付ローラ３１６ｃとを有している。そして、押付機構３１６の回動軸３１６ａは巻出駆動機構３５と接続され、巻出駆動機構３５によりアーム部材３１６ｂが図１の紙面において反時計回りに回動されることで押付ローラ３１６ｃが基材Ｓａの後端部を接続位置Ｐ１で原反３１１ｂに押し付ける。この押付タイミングで、予めオペレータにより基材Ｓｂの先端部の表面に貼り付けられた両面テープＴＰが押し付け位置に移動している。したがって、基材Ｓａの後端部と基材Ｓｂの先端部とが重なり合う重畳領域において、基材Ｓａの後端部と基材Ｓｂの先端部とが両面テープＴＰにより接続される（図４Ｃ参照）。 The pressing mechanism 316 has an arm member 316b that is rotatable around a rotating shaft 316a extending in the width direction X, and a pressing roller 316c attached to the tip end portion of the arm member 316b. Then, the rotation shaft 316a of the pressing mechanism 316 is connected to the unwinding drive mechanism 35, and the arm member 316b is rotated counterclockwise on the paper surface of FIG. 1 by the unwinding drive mechanism 35, so that the pressing roller 316c is the basis. The rear end portion of the material Sa is pressed against the original fabric 311b at the connection position P1. At this pressing timing, the double-sided tape TP previously attached to the surface of the tip of the base material Sb by the operator is moved to the pressing position. Therefore, in the overlapping region where the rear end portion of the base material Sa and the front end portion of the base material Sb overlap, the rear end portion of the base material Sa and the front end portion of the base material Sb are connected by the double-sided tape TP (see FIG. 4C). ).

また、巻出部３１には、固定ローラ３１８ａ、テンションローラ３１８ｂおよび固定ローラ３１８ｃが設けられており、ターレット機構３１４から巻き出される基材Ｓを塗布部１に向けて搬出する。 Further, the unwinding portion 31 is provided with a fixed roller 318a, a tension roller 318b and a fixed roller 318c, and carries out the base material S unwound from the turret mechanism 314 toward the coating portion 1.

このように構成された巻出部３１では、原反３１１ａでの基材Ｓａの残量低下に伴って基材Ｓａ、Ｓｂを接続して連続体を形成し、これを基材Ｓとして巻き出す。この基材接続時に基材Ｓａ、Ｓｂのつなぎ目（重畳領域）に皺が入ってしまうことがある。その理由を、図４Ａ〜図４Ｄを参照しつつ巻出部３１の動作を説明することで明らかにする。 In the unwinding portion 31 configured in this way, as the remaining amount of the base material Sa on the raw fabric 311a decreases, the base materials Sa and Sb are connected to form a continuum, which is unwound as the base material S. .. At the time of connecting the base materials, wrinkles may be formed at the joints (superimposed regions) of the base materials Sa and Sb. The reason will be clarified by explaining the operation of the unwinding unit 31 with reference to FIGS. 4A to 4D.

図４Ａないし図４Ｄは巻出部での連続体の形成動作を模式的に示す図である。塗工装置１００では、図１に示すように塗布部１への基材Ｓの巻出を行う所定の基材巻出位置に位置決めされた原反３１１ａから基材Ｓａを基材Ｓとして巻出部３１から巻出し、搬送方向Ｄｓに基材Ｓを搬送しながら塗布部１による塗工液の供給および硬化ユニット４による乾燥硬化を行って塗工膜を基材Ｓに形成する。この基材Ｓａへの塗工処理を継続して行うことで原反３１１ａでの基材残量が減少していく。そこで、本実施形態では、制御ユニット２は基材残量が一定値に到達すると、基材Ｓに対する塗工処理を一定時間の間だけ継続しながら原反の切替動作を並行して行うことで連続体を形成し、これを基材Ｓとして巻き出す。 4A to 4D are diagrams schematically showing the formation operation of the continuum at the unwinding portion. In the coating apparatus 100, as shown in FIG. 1, the base material Sa is unwound as the base material S from the raw fabric 311a positioned at a predetermined base material unwinding position for unwinding the base material S to the coating portion 1. While unwinding from the portion 31 and transporting the base material S in the transport direction Ds, the coating film is supplied by the coating unit 1 and dried and cured by the curing unit 4 to form a coating film on the base material S. By continuing the coating treatment on the base material Sa, the remaining amount of the base material on the raw fabric 311a is reduced. Therefore, in the present embodiment, when the remaining amount of the base material reaches a certain value, the control unit 2 performs the original fabric switching operation in parallel while continuing the coating process on the base material S for a certain period of time. A continuum is formed and this is unwound as the base material S.

この原反の切替動作では、図４Ａに示すように、ターレット機構３１４が巻出駆動機構３５により反時計回りに約１６０゜回動して原反３１１ａを基材巻出位置から離間させるとともに原反３１１ｂを基材巻出位置に近づける。このような回動軸３１４ａを中心とする原反３１１ａ、３１１ｂの旋回動作に連動して巻出ローラ３１２ａ、３１２ｂを時計回りに回転させる。これにより、巻出ローラ３１２ｂ側では、原反３１１ｂが時計回りに回転し、その先端部Ｓｂｆ（図４Ｃ参照）が基材Ｓａに向けて巻き出される。一方、巻出ローラ３１２ａ側では、原反３１１ａから基材Ｓａが巻出されて補助ローラ３１３ａに巻き掛けられる。また基材Ｓａの巻出に連動して押付ローラ３１６ｃが基材巻出位置の近傍に位置する原反３１１ｂに向けて移動し、基材Ｓａを原反３１１ｂの先端部Ｓｂｆに押し遣り、基材Ｓａ、Ｓｂを重ね合せて重畳領域Ｒｓ（図４Ｃ参照）を形成する。この原反３１１ｂの先端部Ｓｂｆの表面には、予め両面テープＴＰが取り付けられている。したがって、図４Ａに示す状態から原反３１１ａ、３１１ｂの巻出しが進行すると、両面テープＴＰが押付ローラ３１６ｃの直下位置に送り込まれ、重畳領域Ｒｓで基材Ｓａ、Ｓｂを接続する。こうして２つの基材Ｓａ、Ｓｂが接続される位置が接続位置Ｐ１である。 In this original fabric switching operation, as shown in FIG. 4A, the turret mechanism 314 is rotated counterclockwise by about 160 ° by the unwinding drive mechanism 35 to separate the original fabric 311a from the base material unwinding position and the original fabric. Bring the counterclockwise 311b closer to the base material unwinding position. The unwinding rollers 312a and 312b are rotated clockwise in conjunction with the turning operation of the original fabrics 311a and 311b centered on the rotating shaft 314a. As a result, on the unwinding roller 312b side, the original fabric 311b rotates clockwise, and its tip Sbf (see FIG. 4C) is unwound toward the base material Sa. On the other hand, on the unwinding roller 312a side, the base material Sa is unwound from the original fabric 311a and wound around the auxiliary roller 313a. Further, the pressing roller 316c moves toward the original fabric 311b located near the substrate unwinding position in conjunction with the unwinding of the base material Sa, and pushes the base material Sa to the tip portion Sbf of the original fabric 311b to form a base. The materials Sa and Sb are overlapped to form a superposed region Rs (see FIG. 4C). Double-sided tape TP is attached in advance to the surface of the tip portion Sbf of the original fabric 311b. Therefore, when the unwinding of the original fabrics 311a and 311b proceeds from the state shown in FIG. 4A, the double-sided tape TP is sent to the position directly below the pressing roller 316c, and the base materials Sa and Sb are connected at the overlapping region Rs. The position where the two base materials Sa and Sb are connected is the connection position P1.

このように接続位置Ｐ１での基材Ｓａ、Ｓｂの接続が完了すると、図４Ｂに示すように、カッター部材３１５ｃが待機位置（点線位置）から切断位置（実線位置）に移動して基材Ｓａを切断する。これにより基材Ｓａが原反３１１ａから切り離され、基材Ｓａの後端部Ｓａｒと基材Ｓｂの先端部Ｓｂｆとが重なり合っている領域、つまり重畳領域Ｒｓ（図４Ｃ参照）の範囲が確定する。一方、上記切り離しによって、それ以降においては原反３１１ａからの塗布部１への基材供給は停止される。また、上記基材供給の停止と入れ替わって、重畳領域Ｒｓに続いて基材Ｓｂが基材Ｓａと接続されて長尺帯状の連続体を形成し、基材Ｓとして塗布部１に向けて巻出可能となる。 When the connection of the base materials Sa and Sb at the connection position P1 is completed in this way, as shown in FIG. 4B, the cutter member 315c moves from the standby position (dotted line position) to the cutting position (solid line position) and the base material Sa. To disconnect. As a result, the base material Sa is separated from the original fabric 311a, and the range of the region where the rear end portion Sar of the base material Sa and the front end portion Sbf of the base material Sb overlap, that is, the overlapping region Rs (see FIG. 4C) is determined. .. On the other hand, due to the above separation, the supply of the base material from the raw fabric 311a to the coating portion 1 is stopped after that. Further, instead of stopping the supply of the base material, the base material Sb is connected to the base material Sa following the superposed region Rs to form a long strip-shaped continuum, and the base material S is wound toward the coating portion 1. It will be possible to get out.

上記のようにして基材Ｓａの切り離しが完了すると、図４Ｃに示すように、カッター部材３１５ｃが待機位置（実線位置）に戻る。また、重畳領域Ｒｓが押し付け位置を通過すると、押付ローラ３１６ｃも元の待機位置（実線位置）に戻る。さらに、ターレット機構３１４が巻出駆動機構３５により反時計回りに約２０゜回動して原反３１１ｂを基材巻出位置に移動させ、位置決めする。 When the separation of the base material Sa is completed as described above, the cutter member 315c returns to the standby position (solid line position) as shown in FIG. 4C. Further, when the superposed region Rs passes through the pressing position, the pressing roller 316c also returns to the original standby position (solid line position). Further, the turret mechanism 314 is rotated counterclockwise by about 20 ° by the unwinding drive mechanism 35 to move the original fabric 311b to the base material unwinding position and position it.

このようにターレット機構３１４を１８０゜回動させる間に、基材Ｓａの後端部Ｓａｒと基材Ｓｂの先端部Ｓｂｆとの部分的な重ね合わせ動作、重畳領域Ｒｓに対する押付ローラ３１６ｃの押付動作ならびに基材Ｓａの切断動作を行っている。これらの動作が基材Ｓａ、Ｓｂに与えられるため、特に金属シートなどの薄膜材料で基材Ｓａ、Ｓｂが構成されている場合、例えば図４Ｃ中の部分拡大図に示すように重畳領域Ｒｓに皺Ｗが発生することがある。そして、皺Ｗが入った状態で基材Ｓが固定ローラ３１８ａ、テンションローラ３１８ｂおよび固定ローラ３１８ｃを介して巻出部３１から搬出され、さらに搬送ローラ３２ａ、３２ｂを介してバックアップローラ３３に搬送される（図４Ｄ参照）。したがって、ノズル１２が塗工液供給位置Ｐ２に位置した状態のまま、皺Ｗがバックアップローラ３３に搬送されてくると、ノズル１２と干渉して基材Ｓがノズル１２に巻き込まれて破断することがある。また、ノズル１２の先端部にダメージが与えられてしまうこともある。 While rotating the turret mechanism 314 by 180 ° in this way, the rear end portion Sar of the base material Sa and the tip portion Sbf of the base material Sb are partially overlapped with each other, and the pressing roller 316c is pressed against the overlapping region Rs. In addition, the base material Sa is being cut. Since these operations are given to the base materials Sa and Sb, especially when the base materials Sa and Sb are composed of a thin film material such as a metal sheet, for example, as shown in the partially enlarged view in FIG. 4C, the superimposed region Rs Wrinkles W may occur. Then, the base material S is carried out from the unwinding portion 31 via the fixed roller 318a, the tension roller 318b, and the fixed roller 318c with the wrinkles W, and further carried to the backup roller 33 via the transport rollers 32a and 32b. (See FIG. 4D). Therefore, if the wrinkle W is conveyed to the backup roller 33 while the nozzle 12 is located at the coating liquid supply position P2, the base material S is caught in the nozzle 12 and breaks due to interference with the nozzle 12. There is. In addition, the tip of the nozzle 12 may be damaged.

そこで、本実施形態では、基材Ｓの搬送経路ＰＴにおいて接続位置Ｐ１と塗工液供給位置Ｐ２との中間に位置する中間位置Ｐ３で皺Ｗを光学的に検知している。より具体的には、搬送ローラ３２ａに基材（連続体）Ｓが巻き係合して支持された位置を中間位置Ｐ３とし、この中間位置Ｐ３において照射部５と受光部６とが基材Ｓを挟んで幅方向Ｘに対向配置されている。照射部５は搬送ローラ３２ａの一方端部３２ａ１の直上に配置された発光素子５１を有している。発光素子５１は搬送ローラ３２ａのローラ表面から所定の皺検知高さＨ（図４Ｃ参照）だけ鉛直上方（＋Ｚ）に離れた高さ位置で光ビームＬＢを幅方向Ｘに照射するように支持部材（図示省略）で固定されている。なお、皺検知高さＨは
Ｈ＞（基材Ｓａの厚み）＋（両面テープＴＰの厚み）＋（基材Ｓｂの厚み）
に設定されており、光ビームＬＢは基材（連続体）Ｓの表面に沿って進む。 Therefore, in the present embodiment, the wrinkle W is optically detected at the intermediate position P3 located between the connection position P1 and the coating liquid supply position P2 in the transport path PT of the base material S. More specifically, the position where the base material (continuum) S is wound and engaged with the transport roller 32a and supported is set as the intermediate position P3, and at this intermediate position P3, the irradiation unit 5 and the light receiving unit 6 are connected to the base material S. Are arranged so as to face each other in the width direction X. The irradiation unit 5 has a light emitting element 51 arranged directly above one end portion 32a1 of the transport roller 32a. The light emitting element 51 is a support member so as to irradiate the light beam LB in the width direction X at a height position vertically upward (+ Z) by a predetermined wrinkle detection height H (see FIG. 4C) from the roller surface of the transport roller 32a. It is fixed with (not shown). The wrinkle detection height H is H> (thickness of base material Sa) + (thickness of double-sided tape TP) + (thickness of base material Sb).
The light beam LB travels along the surface of the substrate (continuum) S.

また、受光部６は搬送ローラ３２ａの他方端部３２ａ２の直上に配置された受光素子６１を有している。受光素子６１は発光素子５１と対向して光ビームＬＢを受光するように配置されている。つまり、受光素子６１は搬送ローラ３２ａのローラ表面から所定の皺検知高さＨだけ鉛直上方（＋Ｚ）に離れた高さ位置で光ビームＬＢを受光するように支持部材（図示省略）で固定されている。したがって、図２中の１点鎖線で示すように、照射部５の発光素子５１から光ビームＬＢがバックアップローラ３３に巻き掛けられた基材Ｓの表面上を通過して受光部６の受光素子６１に入射されるように、発光素子５１および受光素子６１が固定配置されている。 Further, the light receiving unit 6 has a light receiving element 61 arranged directly above the other end portion 32a2 of the transport roller 32a. The light receiving element 61 is arranged so as to receive the light beam LB facing the light emitting element 51. That is, the light receiving element 61 is fixed by a support member (not shown) so as to receive the light beam LB at a height position vertically above (+ Z) by a predetermined wrinkle detection height H from the roller surface of the transport roller 32a. ing. Therefore, as shown by the alternate long and short dash line in FIG. 2, the light beam LB from the light emitting element 51 of the irradiation unit 5 passes over the surface of the base material S wound around the backup roller 33, and the light receiving element of the light receiving unit 6 The light emitting element 51 and the light receiving element 61 are fixedly arranged so as to be incident on the 61.

そして、制御ユニット２からの指令に応じて照射部５は受光部６に向けて光ビームＬＢを照射する。一方、受光部６は照射部５から照射された光ビームＬＢを受光し、その受光量に対応する信号を制御ユニット２に出力する。そして、制御ユニット２は当該受光量の変化に基づいて皺検知を行う。 Then, in response to a command from the control unit 2, the irradiation unit 5 irradiates the light beam LB toward the light receiving unit 6. On the other hand, the light receiving unit 6 receives the light beam LB irradiated from the irradiation unit 5, and outputs a signal corresponding to the received light amount to the control unit 2. Then, the control unit 2 detects wrinkles based on the change in the amount of received light.

制御ユニット２は図３に示すようにＣＰＵ等により構成される演算処理部２１とプログラムなどを記憶する記憶部２２とを有している。演算処理部２１は記憶部２２に予め記憶されているプログラムにしがって装置各部を制御して基材Ｓへの塗工処理を行う。特に原反３１１ａでの基材残量が減少して基材Ｓａに基材Ｓｂを接続して長尺帯状の連続体を形成し、これを基材Ｓとして塗工処理を行う際には、受光部６により受光される光ビームＬＢの受光量の変化に基づいて基材（連続体）Ｓでの皺Ｗの発生を検知し、その検知結果に基づいてポンプ１３２の動作を制御して塗工液の供給と供給停止とを制御するとともにノズル移動機構１４を制御して皺Ｗが塗工液供給位置Ｐ２を通過する間だけノズル１２を塗工液供給位置Ｐ２から離間位置に移動させ、退避させる。このように、演算処理部２１は本発明の「皺検知部」、「供給制御部」および「ノズル位置制御部」として機能する。 As shown in FIG. 3, the control unit 2 has an arithmetic processing unit 21 configured by a CPU or the like and a storage unit 22 for storing a program or the like. The arithmetic processing unit 21 controls each unit of the apparatus according to the program stored in advance in the storage unit 22 to perform the coating process on the base material S. In particular, when the remaining amount of the base material on the raw fabric 311a is reduced and the base material Sb is connected to the base material Sa to form a long strip-shaped continuous body, and this is used as the base material S for coating treatment. The generation of wrinkles W on the base material (continuum) S is detected based on the change in the amount of light received by the light beam LB received by the light receiving unit 6, and the operation of the pump 132 is controlled and applied based on the detection result. The nozzle 12 is moved from the coating liquid supply position P2 to a position away from the coating liquid supply position P2 only while the wrinkle W passes through the coating liquid supply position P2 by controlling the supply and supply stop of the working liquid and controlling the nozzle moving mechanism 14. Evacuate. In this way, the arithmetic processing unit 21 functions as the “wrinkle detection unit”, the “supply control unit”, and the “nozzle position control unit” of the present invention.

以上のように、本実施形態では、照射部５および受光部６の組み合わせによって基材Ｓａの後端部Ｓａｒと基材Ｓｂの先端部Ｓｂｆとを接続してなる基材（連続体）Ｓに入った皺Ｗを中間位置Ｐ３で光学的かつ非接触状態で高精度に検知することができる。 As described above, in the present embodiment, the base material (continuum) S formed by connecting the rear end portion Sar of the base material Sa and the front end portion Sbf of the base material Sb by the combination of the irradiation unit 5 and the light receiving unit 6. The wrinkles W that have entered can be detected optically and with high accuracy in a non-contact state at the intermediate position P3.

また、皺Ｗの検知に基づいて皺Ｗがバックアップローラ３３のうちノズル１２の吐出口と対向する塗工液供給位置Ｐ２を通過する間だけノズル１２を離間位置に退避している。このため、ノズル１２が皺Ｗと干渉するのを確実に防止することができる。さらに、このような場合に、基材表面のうち皺Ｗが形成された領域への塗工液の供給が停止され、塗工液が無駄に消費されるのを防止することができる。 Further, based on the detection of the wrinkle W, the nozzle 12 is retracted to the separated position only while the wrinkle W passes through the coating liquid supply position P2 facing the discharge port of the nozzle 12 in the backup roller 33. Therefore, it is possible to reliably prevent the nozzle 12 from interfering with the wrinkle W. Further, in such a case, the supply of the coating liquid to the region where the wrinkles W are formed on the surface of the base material is stopped, and it is possible to prevent the coating liquid from being wasted.

このように第１実施形態においては、基材Ｓａ、Ｓｂがそれぞれ本発明の「第１基材」および「第２基材」の一例に相当している。また、搬送ローラ３２ａが本発明の「支持ローラ」の一例に相当している。また、Ｚ方向が本発明の「直交方向」に相当している。 As described above, in the first embodiment, the base materials Sa and Sb correspond to examples of the "first base material" and the "second base material" of the present invention, respectively. Further, the transport roller 32a corresponds to an example of the "support roller" of the present invention. Further, the Z direction corresponds to the "orthogonal direction" of the present invention.

ところで、上記実施形態では、搬送ローラ（支持ローラ）３２ａに対して基材Ｓを係合させて皺Ｗの検知を行っているが、この皺検知では、基材Ｓが搬送ローラ３２ａの表面に密接していることが前提条件となる。というのも、搬送ローラ３２ａのローラ表面から基材Ｓが浮上すると、浮上部分で光ビームＬＢが遮光されてしまうからである。そこで、搬送ローラ３２ａのローラ表面からの基材Ｓの浮上を防止するために、搬送ローラ３２ａとして、基材Ｓと係合するローラ表面領域に溝が複数設けられたグルーブローラ、当該ローラ表面領域に吸着孔が複数設けられた吸着ローラまたは当該ローラ表面領域がゴム部材で覆われたゴムローラを用いるのが好適である。 By the way, in the above embodiment, the base material S is engaged with the transport roller (support roller) 32a to detect the wrinkles W, but in this wrinkle detection, the base material S is on the surface of the transport roller 32a. Closeness is a prerequisite. This is because when the base material S floats from the roller surface of the transport roller 32a, the light beam LB is shielded from light at the floating portion. Therefore, in order to prevent the base material S from floating from the roller surface of the transfer roller 32a, the transfer roller 32a is a groove roller provided with a plurality of grooves in the roller surface region that engages with the base material S, and the roller surface area. It is preferable to use a suction roller provided with a plurality of suction holes or a rubber roller whose surface region of the roller is covered with a rubber member.

また、上記実施形態では、発光素子５１および受光素子６１は支持部材により固定されている。したがって、搬送ローラ３２ａの偏芯が大きくなると、中間位置Ｐ３での鉛直方向Ｚにおける基材Ｓの表面高さも周期的に大きく変動し、その影響によって誤検知が発生する可能性がある。そこで、搬送ローラ３２ａの偏芯による影響を抑制するために、照射部５および受光部６を以下のように構成してもよい。以下、図５を参照しつつ本発明の第２実施形態について説明する。 Further, in the above embodiment, the light emitting element 51 and the light receiving element 61 are fixed by the support member. Therefore, when the eccentricity of the transport roller 32a becomes large, the surface height of the base material S in the vertical direction Z at the intermediate position P3 also fluctuates greatly periodically, and there is a possibility that erroneous detection may occur due to the influence. Therefore, in order to suppress the influence of the eccentricity of the transport roller 32a, the irradiation unit 5 and the light receiving unit 6 may be configured as follows. Hereinafter, the second embodiment of the present invention will be described with reference to FIG.

図５は本発明にかかる塗工装置の第２実施形態で採用された照射部の構成を示す模式図である。この第２実施形態が第１実施形態と相違するのは、照射部５および受光部６の構成のみであり、その他の構成および動作は第１実施形態と同一である。したがって、以下のおいては相違点を中心に説明し、同一構成については同一符号を付して説明を省略する。 FIG. 5 is a schematic view showing the configuration of the irradiation unit adopted in the second embodiment of the coating apparatus according to the present invention. This second embodiment differs from the first embodiment only in the configuration of the irradiation unit 5 and the light receiving unit 6, and the other configurations and operations are the same as those in the first embodiment. Therefore, in the following description, the differences will be mainly described, and the same components will be designated by the same reference numerals and the description thereof will be omitted.

第１実施形態で採用された照射部５は発光素子５１を所定の高さ位置で支持部材（図示省略）により固定配置しているが、第２実施形態で採用された照射部５は発光素子５１の高さ位置を搬送ローラ３２ａの偏芯に応じて鉛直方向Ｚに変位させながら発光素子５１を保持する発光保持機構５２が設けられている。この発光保持機構５２は、図５に示すように、搬送ローラ３２ａの一方端部３２ａ１のローラ表面に係合しながら搬送ローラ３２ａに対して従動する回転する２つの回転ローラ５２１、５２１を有している。回転ローラ５２１、５２１はＹ方向に互いに離間しながら保持部材５２２により回転自在に軸支され、搬送ローラ３２ａの回転動作に追従して従動回転する。 In the irradiation unit 5 adopted in the first embodiment, the light emitting element 51 is fixedly arranged by a support member (not shown) at a predetermined height position, but the irradiation unit 5 adopted in the second embodiment is a light emitting element. A light emitting holding mechanism 52 for holding the light emitting element 51 while shifting the height position of the 51 in the vertical direction Z according to the eccentricity of the transport roller 32a is provided. As shown in FIG. 5, the light emitting holding mechanism 52 has two rotating rollers 521 and 521 that rotate while engaging with the roller surface of one end 32a1 of the transport roller 32a and are driven by the transport roller 32a. ing. The rotary rollers 521 and 521 are rotatably supported by the holding member 522 while being separated from each other in the Y direction, and follow the rotational operation of the transport roller 32a and rotate in a driven manner.

保持部材５２２は図５に示すように回転ローラ５２１、５２１で挟み込むようにして発光素子５１を保持している。また、２本のバネ部材５２３、５２３によって搬送ローラ３２ａに向かう方向、つまり（−Ｚ）方向に付勢された状態で装置フレームＦＬに対して鉛直方向Ｚに移動自在に支持されている。このため、保持部材５２２で軸支した回転ローラ５２１、５２１がバネ部材５２３、５２３の付勢力で搬送ローラ３２ａのローラ表面を押し付けながら安定して当接する。 As shown in FIG. 5, the holding member 522 holds the light emitting element 51 so as to be sandwiched between the rotating rollers 521 and 521. Further, the two spring members 523 and 523 are movably supported in the vertical direction Z with respect to the apparatus frame FL in a state of being urged in the direction toward the transport roller 32a, that is, in the (−Z) direction. Therefore, the rotary rollers 521 and 521 pivotally supported by the holding member 522 are in stable contact with each other while pressing the roller surface of the transport roller 32a with the urging force of the spring members 523 and 523.

ここで、図５の（ａ）欄に示す偏芯状態から図５の（ｂ）欄に示す偏芯状態に移行する、つまり搬送ローラ３２ａの偏芯により搬送ローラ３２ａが鉛直上方、つまり（＋Ｚ）方向に変位する場合、バネ部材５２３、５２３のバネ力に抗いながら回転ローラ５２１、５２１、保持部材５２２ならびに発光素子５１は搬送ローラ３２ａとの相対的な位置関係を変動させることなく、一体的に上方に移動する。逆に、図５の（ｂ）欄に示す偏芯状態から図５の（ａ）欄に示す偏芯状態に移行する、つまり搬送ローラ３２ａの偏芯により搬送ローラ３２ａが鉛直下方、つまり（−Ｚ）方向に変位する場合、バネ部材５２３、５２３のバネ力により回転ローラ５２１、５２１、保持部材５２２ならびに発光素子５１は搬送ローラ３２ａとの相対的な位置関係を変動させることなく、一体的に下方に移動する。したがって、搬送ローラ３２ａの偏芯による影響を受けることなく、発光素子５１は搬送ローラ３２ａのローラ表面から所定の皺検知高さＨだけ鉛直上方（＋Ｚ）に離れた高さ位置で光ビームＬＢを幅方向Ｘに照射することができる。 Here, the eccentric state shown in the column (a) of FIG. 5 shifts to the eccentric state shown in the column (b) of FIG. ), The rotating rollers 521, 521, the holding member 522, and the light emitting element 51 are integrated without changing the relative positional relationship with the transport roller 32a while resisting the spring force of the spring members 523 and 523. Move upwards. On the contrary, the eccentric state shown in the column (b) of FIG. 5 shifts to the eccentric state shown in the column (a) of FIG. When displaced in the Z) direction, the rotating rollers 521, 521, the holding member 522, and the light emitting element 51 are integrally displaced without changing the relative positional relationship with the transport roller 32a due to the spring force of the spring members 523 and 523. Move down. Therefore, without being affected by the eccentricity of the transfer roller 32a, the light emitting element 51 transmits the light beam LB at a height position vertically upward (+ Z) by a predetermined wrinkle detection height H from the roller surface of the transfer roller 32a. It is possible to irradiate in the width direction X.

また図示を省略するが、受光部６も上記発光保持機構５２と同様の構成を有する受光保持機構が設けられており、受光保持機構の保持部材により受光素子６１が保持されている。このため、搬送ローラ３２ａの偏芯による影響を受けることなく、受光素子６１も搬送ローラ３２ａのローラ表面から所定の皺検知高さＨだけ鉛直上方（＋Ｚ）に離れた高さ位置で光ビームＬＢを受光することができる。したがって、搬送ローラ３２ａの偏芯量が小さい場合はもちろんのことを比較的大きい場合であっても、常に光ビームＬＢを基材（連続体）Ｓの表面に沿って照射し、その受光量の変化に基づいて皺Ｗを安定的に、かつ高精度に検出することができる。 Although not shown, the light receiving unit 6 is also provided with a light receiving holding mechanism having the same configuration as the light emitting holding mechanism 52, and the light receiving element 61 is held by the holding member of the light receiving holding mechanism. Therefore, the light receiving element 61 is not affected by the eccentricity of the transport roller 32a, and the light beam LB is also located at a height position vertically upward (+ Z) by a predetermined wrinkle detection height H from the roller surface of the transport roller 32a. Can receive light. Therefore, even when the amount of eccentricity of the transport roller 32a is small or relatively large, the light beam LB is always irradiated along the surface of the base material (continuous body) S, and the amount of light received thereof is Wrinkle W can be detected stably and with high accuracy based on the change.

このように第２実施形態においては、発光保持機構５２の回転ローラ５２１、５２１が本発明の「発光側回転ローラ」の一例に相当し、受光保持機構の回転ローラが本発明の「受光側回転ローラ」の一例に相当している。また、鉛直方向Ｚが本発明の「直交方向」に相当している。 As described above, in the second embodiment, the rotating rollers 521 and 521 of the light emitting holding mechanism 52 correspond to an example of the "light emitting side rotating roller" of the present invention, and the rotating roller of the light receiving holding mechanism corresponds to the "light receiving side rotation" of the present invention. It corresponds to an example of "Laura". Further, the vertical direction Z corresponds to the "orthogonal direction" of the present invention.

なお、本発明は上記した実施形態に限定されるものではなく、その趣旨を逸脱しない限りにおいて上述したもの以外に種々の変更を行うことが可能である。例えば、上記実施形態では、巻出部３１の外側に配置された搬送ローラ３２ａに対応して照射部５および受光部６を設けて皺検知を行っているが、その他のローラ３１８ａ、３１８ｃ、３２ｂなどにに対応して照射部５および受光部６を設けて皺検知を行ってもよい。 The present invention is not limited to the above-described embodiment, and various modifications can be made other than those described above as long as the present invention is not deviated from the gist thereof. For example, in the above embodiment, the irradiation unit 5 and the light receiving unit 6 are provided corresponding to the transport roller 32a arranged outside the unwinding unit 31 to detect wrinkles, but other rollers 318a, 318c, 32b. The wrinkle detection may be performed by providing the irradiation unit 5 and the light receiving unit 6 in response to the above.

また、上記実施形態では基材Ｓとして集電体となる金属膜を、塗工膜として活物質材料を用いて電池用電極を製造するが、この発明に適用対象となる基材および塗工膜（塗工液）の材料はこれに限定されず任意である。 Further, in the above embodiment, a metal film to be a current collector is used as the base material S, and an active material is used as the coating film to manufacture a battery electrode. However, the base material and the coating film to be applied to the present invention are manufactured. The material of (coating liquid) is not limited to this and is arbitrary.

この発明は、長尺状の第１基材の後端部に長尺状の第２基材の先端部を接続してなる連続体を搬送経路に沿って搬送しながらノズルから塗工液を供給して連続体に塗工膜を形成する塗工技術全般に適用可能である。 In the present invention, the coating liquid is transferred from the nozzle while transporting a continuum formed by connecting the tip end portion of the long second base material to the rear end portion of the long first base material along the transport path. It can be applied to all coating techniques for supplying and forming a coating film on a continuum.

５…照射部
６…受光部
１２…ノズル
１４…ノズル移動機構
２１…演算処理部（皺検知部、供給制御部、ノズル位置制御部）
３２ａ…搬送ローラ（支持ローラ）
３２ａ１…（搬送ローラの）一方端部
３２ａ２…（搬送ローラの）他方端部
５１…発光素子
５２…発光保持機構
６１…受光素子
１００…塗工装置
３１１ａ，３１１ｂ…原反
５２１…（発光側）回転ローラ
５２２…（発光側）保持部材
ＬＢ…光ビーム
Ｐ１…接続位置
Ｐ２…塗工液供給位置
Ｐ３…中間位置
ＰＴ…搬送経路
Ｓ…基材（連続体）
Ｓａ…（第１）基材
Ｓａｒ…（第１基材の）後端部
Ｓｂ…（第２）基材
Ｓｂｆ…（第２基材の）先端部
Ｗ…皺
Ｚ…鉛直方向（直交方向）
5 ... Irradiation unit 6 ... Light receiving unit 12 ... Nozzle 14 ... Nozzle movement mechanism 21 ... Calculation processing unit (wrinkle detection unit, supply control unit, nozzle position control unit)
32a ... Transfer roller (support roller)
32a1 ... One end (of the transport roller) 32a2 ... The other end of the (conveyor roller) 51 ... Light emitting element 52 ... Light emitting holding mechanism 61 ... Light receiving element 100 ... Coating device 311a, 311b ... Original fabric 521 ... (Light emitting side) Rotating roller 522 ... (light emitting side) holding member LB ... light beam P1 ... connection position P2 ... coating liquid supply position P3 ... intermediate position PT ... transport path S ... base material (continuum)
Sa ... (1st base material) Sar ... (first base material) rear end Sb ... (2nd) base material Sbf ... (2nd base material) tip W ... wrinkle Z ... vertical direction (orthogonal direction)

Claims (6)

長尺状の第１基材の後端部に対して長尺状の第２基材の先端部を接続位置で接続してなる連続体を搬送経路に沿って搬送しながら塗工液供給位置でノズルから塗工液を供給して前記連続体に塗工膜を形成する塗工装置であって、
前記搬送経路において前記塗工液供給位置と前記接続位置との間に位置する中間位置で前記搬送経路に沿って搬送される前記連続体に係合して支持する支持ローラと、
前記支持ローラに支持された前記連続体の表面に沿って光ビームを照射する照射部と、
前記連続体を挟んで前記照射部と対向して配置されて前記光ビームを受光する受光部と、
前記受光部により受光される前記光ビームの受光量の変化に基づいて前記連続体での皺の発生を検知する皺検知部とを備え、
前記照射部は、前記支持ローラの一方端部側から他方端部側に前記光ビームを発光する発光素子と、前記発光素子を保持しながら前記支持ローラの一方端部でローラ表面と係合して前記支持ローラの回転軸と直交する直交方向において前記ローラ表面から前記発光素子までの距離を皺検知高さに維持する発光保持機構とを有し、
前記受光部は、前記光ビームを受光する受光素子と、前記受光素子を保持しながら前記支持ローラの他方端部で前記ローラ表面と係合して前記直交方向において前記ローラ表面から前記受光素子までの距離を前記皺検知高さに維持する受光保持機構とを有することを特徴とする塗工装置。 The coating liquid supply position while transporting a continuum formed by connecting the tip of the long second base material to the rear end of the long first base material at the connection position along the transport path. It is a coating device that supplies a coating liquid from a nozzle to form a coating film on the continuum.
A support roller that engages with and supports the continuum transported along the transport path at an intermediate position located between the coating liquid supply position and the connection position in the transport path.
An irradiation unit that irradiates a light beam along the surface of the continuum supported by the support roller, and an irradiation unit.
A light receiving unit that is arranged so as to face the irradiation unit with the continuum in between and receives the light beam.
A wrinkle detecting unit for detecting the occurrence of wrinkles in the continuum based on a change in the light receiving amount of the light beam received by the light receiving unit is provided .
The irradiation unit engages with a light emitting element that emits the light beam from one end side to the other end side of the support roller and the roller surface at one end of the support roller while holding the light emitting element. It also has a light emitting holding mechanism that maintains the distance from the roller surface to the light emitting element at the wrinkle detection height in a direction orthogonal to the rotation axis of the support roller.
The light receiving portion engages with the light receiving element that receives the light beam and the roller surface at the other end of the support roller while holding the light receiving element, and from the roller surface to the light receiving element in the orthogonal direction. A coating device comprising a light receiving holding mechanism for maintaining the distance of the wrinkles at the wrinkle detection height. 請求項１に記載の塗工装置であって、
前記発光保持機構は、前記支持ローラの前記一方端部の前記ローラ表面に係合しながら前記支持ローラに対して従動する回転する発光側回転ローラと、前記発光素子を保持するとともに前記発光側回転ローラを回転自在に支持しながら前記直交方向に移動自在に構成された発光側保持部材とを有し、
前記受光保持機構は、前記支持ローラの前記他方端部の前記ローラ表面に係合しながら前記支持ローラに対して従動する回転する受光側回転ローラと、前記受光素子を保持するとともに前記受光側回転ローラを回転自在に支持しながら前記直交方向に移動自在に構成された受光側保持部材とを有する塗工装置。 The coating device according to claim 1.
The light emitting holding mechanism holds a rotating light emitting side rotating roller that is driven by the supporting roller while engaging with the roller surface at one end of the supporting roller, and holds the light emitting element and rotates the light emitting side. It has a light emitting side holding member configured to be movable in the orthogonal direction while rotatably supporting the rollers.
The light-receiving holding mechanism holds the light-receiving side rotating roller that rotates while engaging with the roller surface at the other end of the support roller and is driven by the support roller, and the light-receiving element and rotates the light-receiving side. A coating device having a light receiving side holding member configured to be movable in the orthogonal direction while rotatably supporting the rollers. 請求項１または２項に記載の塗工装置であって、
前記支持ローラは、前記連続体と係合するローラ表面領域に溝が複数設けられたグルーブローラ、前記ローラ表面領域に吸着孔が複数設けられた吸着ローラまたは前記ローラ表面領域がゴム部材で覆われたゴムローラである塗工装置。 The coating apparatus according to claim 1 or 2.
The support roller is a groove roller having a plurality of grooves in a roller surface region that engages with the continuum, a suction roller having a plurality of suction holes in the roller surface region, or a roller surface region covered with a rubber member. A coating device that is a rubber roller. 請求項１ないし３のいずれか一項に記載の塗工装置であって、
前記皺検知部により皺の発生が検知されたとき、前記皺が前記塗工液供給位置を通過する間、前記ノズルを前記塗工液供給位置から退避させるノズル位置制御部を備える塗工装置。 The coating device according to any one of claims 1 to 3.
A coating device including a nozzle position control unit that retracts the nozzle from the coating liquid supply position while the wrinkle passes through the coating liquid supply position when the occurrence of wrinkles is detected by the wrinkle detection unit. 請求項４に記載の塗工装置であって、
前記ノズルが前記塗工液供給位置から退避される間、前記ノズルからの前記塗工液の供給を停止する供給制御部を備える塗工装置。 The coating device according to claim 4.
A coating device including a supply control unit that stops the supply of the coating liquid from the nozzle while the nozzle is retracted from the coating liquid supply position. 長尺状の第１基材の後端部に対して長尺状の第２基材の先端部を接続位置で接続してなる連続体を搬送経路に沿って搬送しながら塗工液供給位置でノズルから塗工液を供給して前記連続体に塗工膜を形成する塗工方法であって、
前記搬送経路において前記塗工液供給位置と前記接続位置との間に配置された支持ローラに対して前記搬送経路に沿って搬送される前記連続体を係合させて支持する工程と、
前記支持ローラに支持された前記連続体の表面に沿って照射部が光ビームを前記支持ローラの一方端部側から他方端部側に照射するとともに、前記支持ローラの前記他方端部側で受光部が前記光ビームを受光して前記光ビームの受光量を求める工程と、
前記光ビームの受光量の変化に基づいて前記連続体での皺の発生を検知する工程と
を備え、
前記照射部は、前記支持ローラの一方端部側から他方端部側に前記光ビームを発光する発光素子と、前記発光素子を保持しながら前記支持ローラの一方端部でローラ表面と係合して前記支持ローラの回転軸と直交する直交方向において前記ローラ表面から前記発光素子までの距離を皺検知高さに維持する発光保持機構とを有し、
前記受光部は、前記光ビームを受光する受光素子と、前記受光素子を保持しながら前記支持ローラの他方端部で前記ローラ表面と係合して前記直交方向において前記ローラ表面から前記受光素子までの距離を前記皺検知高さに維持する受光保持機構とを有することを特徴とする塗工方法。 The coating liquid supply position while transporting a continuum formed by connecting the tip of the long second base material to the rear end of the long first base material at the connection position along the transport path. It is a coating method in which a coating liquid is supplied from a nozzle to form a coating film on the continuum.
A step of engaging and supporting the continuum transported along the transport path with a support roller arranged between the coating liquid supply position and the connection position in the transport path.
An irradiation unit irradiates a light beam from one end side to the other end side of the support roller along the surface of the continuum supported by the support roller, and receives light on the other end side of the support roller. A step in which the unit receives the light beam and obtains the amount of light received by the light beam.
A step of detecting the occurrence of wrinkles in the continuum based on the change in the amount of received light of the light beam is provided .
The irradiation unit engages with a light emitting element that emits the light beam from one end side to the other end side of the support roller and the roller surface at one end of the support roller while holding the light emitting element. It also has a light emitting holding mechanism that maintains the distance from the roller surface to the light emitting element at the wrinkle detection height in a direction orthogonal to the rotation axis of the support roller.
The light receiving portion engages with the light receiving element that receives the light beam and the roller surface at the other end of the support roller while holding the light receiving element, and from the roller surface to the light receiving element in the orthogonal direction. A coating method comprising a light receiving holding mechanism for maintaining the distance between the two at the wrinkle detection height.
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