JP2005246338A

JP2005246338A - Coating material supply apparatus

Info

Publication number: JP2005246338A
Application number: JP2004063844A
Authority: JP
Inventors: Yukinori Sakumoto; 征則作本; Tsutomu Sugiyama; 勉杉山; Masafusa Murakami; 正房村上; Shuji Mitani; 修司三谷
Original assignee: Tomoegawa Paper Co Ltd
Current assignee: Tomoegawa Co Ltd
Priority date: 2004-03-08
Filing date: 2004-03-08
Publication date: 2005-09-15

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating material supply apparatus in an applicator in which excellent coating is carried out by preventing the occurrence of an air reservoir in an apparatus body and uniformalizing the discharge height of a coating material in the width of a base material. <P>SOLUTION: In an applicator unit 10 used for the applicator for coating the surface of the base material and supplying the coating material to the surface of the base material by discharging the coating material on the continuously transported base material 3 in the width direction with a prescribed width, a coating material reservoir part 16 provided to be extended in the base material width direction and having a coating material flow-in port 15 and a slit like coating material supply passage 17 extended upward from the most upper part of the coating material reservoir part 16 and opened at the upper part of the applicator body 11 to form a coating material discharge port 18 are provided in an applicator body 11. A pressure releasing valve 41 is provided in the vicinity of both end parts of the coating material reservoir part 16. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、シート状の基材への塗工処理を行う塗工機に用いられるファウンテン式の塗料供給装置に関する。 The present invention relates to a fountain-type paint supply device used in a coating machine that performs a coating process on a sheet-like base material.

従来から、紙やプラスチックフィルム等のシート状の基材を連続的に搬送しつつ該基材表面への塗工処理を行う塗工機として、アプリケータ（塗料供給装置）により基材表面に塗料を過剰供給した後に、後続の計量装置により基材表面の余剰塗料を掻き落として塗布量を計量、均一化するという、所謂ブレード式とされたものが多く採用されている。
このような塗工機の塗料供給装置としては、基材表面に転接するロールの表面に塗料を供給し、該塗料を基材表面に転写するという所謂カラーロール式のものや、基材表面に近接する吐出口から塗料を吐出させて該塗料を基材表面に供給するという所謂ファウンテン式のものがあるが、前記カラーロール式の場合、塗料溶剤の揮発による固形物の発生等があることから、特に長時間の塗工を行う際には前記ファウンテン式のものを用いることが多い。 Conventionally, as a coating machine that performs a coating process on the surface of a base material while continuously transporting a sheet-like base material such as paper or plastic film, a paint is applied to the surface of the base material by an applicator (paint supply device). In many cases, a so-called blade type is used, in which after the excessive amount is supplied, the surplus paint on the surface of the substrate is scraped off by a subsequent measuring device to measure and equalize the coating amount.
As a coating material supply device of such a coating machine, a so-called color roll type device in which a coating material is supplied to the surface of a roll that is brought into contact with the surface of the substrate and the coating material is transferred to the surface of the substrate, There is a so-called fountain type in which paint is discharged from an adjacent discharge port and the paint is supplied to the surface of the substrate. However, in the case of the color roll type, solid matter is generated due to volatilization of the paint solvent. In particular, the fountain type is often used when coating is performed for a long time.

前記ファウンテン式の塗料供給装置の中には、中空断面を有して基材幅方向に延びる本体部分であるマニホールドの頂部に前記吐出口を設けると共に、該吐出口からの塗料の吐出高さの均一化を計るべく、マニホールド内に該マニホールドよりも一回り小形の中空断面を有するサブマニホールドを内装してなるものがある（例えば、特許文献１参照。）。このような構成の塗料供給装置においては、まずサブマニホールド内に塗料が流入し、該塗料がサブマニホールドに設けられた開口部から流出して該サブマニホールドとマニホールドとの間の隙間を通過した後に、本体頂部の吐出口から吐出されるようになっている。このような流路を通過させることで、塗料の整流効果を高めてその吐出高さの基材幅方向での均一化を図っている。
特開平６−１４２５８６号公報 In the fountain-type paint supply device, the discharge port is provided at the top of the manifold, which is a main body portion having a hollow cross section and extending in the substrate width direction, and the discharge height of the paint from the discharge port is set. In order to achieve uniformity, there is a manifold in which a sub-manifold having a hollow cross section that is slightly smaller than the manifold is internally provided (for example, see Patent Document 1). In the coating material supply apparatus having such a configuration, the coating material first flows into the sub-manifold, and after the coating material flows out from the opening provided in the sub-manifold and passes through the gap between the sub-manifold and the manifold. The liquid is discharged from the discharge port at the top of the main body. By passing through such a flow path, the rectifying effect of the paint is enhanced, and the discharge height is made uniform in the substrate width direction.
JP-A-6-142586

しかしながら、上述のような構成では、塗料がサブマニホールドとマニホールドとの間の隙間を通過するように、サブマニホールドの開口部は該サブマニホールドの下部に設けられることとなるため、塗料送給開始時等にはサブマニホールド内にエア溜まりが生じることがある。この状態で塗工を行うと、サブマニホールド内のエアが気泡となり塗料と共に吐出口から吐出されることでスジや点欠点等の塗布ムラが発生する可能性があるため、このような点を改善した上で塗料の基材幅方向での吐出高さを均一化できるような塗料供給装置が要望されている。
本発明は上記事情に鑑みてなされたもので、装置本体内のエア溜まりを防止した上で、塗料の基材幅方向での吐出高さの均一化を図って良好な塗工を可能とする塗工機の塗料供給装置を提供する。 However, in the configuration as described above, the opening of the sub-manifold is provided below the sub-manifold so that the paint passes through the gap between the sub-manifold and the manifold. For example, air accumulation may occur in the sub-manifold. If coating is performed in this state, the air in the sub-manifold becomes air bubbles and is discharged from the discharge port together with the paint, which may cause uneven coating such as streaks and point defects. In addition, there is a demand for a paint supply apparatus that can make the discharge height of the paint in the substrate width direction uniform.
The present invention has been made in view of the above circumstances, and after preventing air accumulation in the apparatus main body, it enables uniform coating height by uniformizing the discharge height in the substrate width direction. A coating material supply apparatus for a coating machine is provided.

上記課題の解決手段として、本発明は、基材表面に塗工処理を行う塗工機に用いられ、連続的に搬送される基材にその幅方向で所定の幅で塗料を吐出させることにより、前記基材表面への塗料の供給を行う塗料供給装置において、装置本体内に基材幅方向に延設されると共に塗料流入口を有する塗料溜まり部と、該塗料溜まり部の最上部から略上方に向かって延びると共に前記装置本体の上部に開口して塗料吐出口を形成するスリット状の塗料供給路とを備え、前記塗料溜まり部に、少なくとも一つの塗料液圧調整手段が設けられることを特徴とする。 As a means for solving the above problems, the present invention is used in a coating machine that performs a coating process on the surface of a base material, and discharges the paint with a predetermined width in the width direction to the base material that is continuously conveyed. In the coating material supply apparatus for supplying the coating material to the surface of the base material, a paint reservoir portion extending in the substrate width direction and having a paint inflow port in the apparatus main body, and substantially from the uppermost portion of the paint reservoir portion A slit-like paint supply path that extends upward and opens at the top of the apparatus main body to form a paint discharge port, and at least one paint fluid pressure adjusting means is provided in the paint reservoir. Features.

この構成によれば、塗料流入口から装置本体内に流入した塗料は、塗料溜まり部内を流動して基材幅方向に行き渡りつつ、塗料流入口側から順次塗料供給路内に流入しながら、装置本体頂部近傍の塗料吐出口から所定幅で吐出される。
このとき、装置本体内に塗料を流入させれば、塗料供給開始時等における塗料溜まり部内の空気は、該塗料溜まり部の頂部から略上方に向かって延びる塗料供給路を経て、塗料吐出口から自然排出されるので、装置本体内にエア溜まりが生じることはない。 According to this configuration, the paint flowing into the apparatus main body from the paint inlet flows through the paint reservoir and spreads in the width direction of the base material, and sequentially flows into the paint supply path from the paint inlet side. It is discharged at a predetermined width from the paint discharge port near the top of the main body.
At this time, if the paint is allowed to flow into the apparatus main body, the air in the paint reservoir at the time of starting the supply of the paint, etc. passes through the paint supply path extending substantially upward from the top of the paint reservoir to the paint discharge port. Since it is naturally discharged, no air pool is generated in the apparatus main body.

また、例えば前記塗料溜まり部の端部近傍では、流動する塗料が塗料溜まり部端に突き当たることで局部的に塗料液圧が上昇することがあるが、このような部位に前記塗料液圧調整手段が設けられることで、塗料液圧の局部的な上昇を抑制でき、塗料液圧の基材幅方向での均一化を図ることができる。これにより、塗料吐出口からの塗料の吐出高さの基材幅方向での均一化を図ることができる。 Further, for example, in the vicinity of the end of the paint reservoir portion, the paint fluid pressure may locally increase when the flowing paint hits the end of the paint reservoir portion. Is provided, it is possible to suppress a local increase in the coating fluid pressure and to make the coating fluid pressure uniform in the substrate width direction. Thereby, it is possible to make the discharge height of the paint from the paint discharge port uniform in the substrate width direction.

ここで、塗料溜まり部内の塗料液圧は、塗料流入口から離間するほど低下することがあるため、上記塗料供給装置においては、前記塗料溜まり部が、前記塗料流入口から基材幅方向において離間するほど上方に変化するように形成される構成であることが好ましい。すなわち、塗料流入口から離間するほどスリット状の塗料供給路が短縮されて塗料の流動抵抗が低下するので、結果的に塗料流入口近傍とこれと離間した部位との塗料吐出高さの均一化を図ることができる。 Here, since the paint fluid pressure in the paint reservoir portion may decrease as it is separated from the paint inlet, in the paint supply apparatus, the paint reservoir is separated from the paint inlet in the substrate width direction. It is preferable that the structure is formed so as to change upward as the time increases. That is, as the distance from the paint inflow port increases, the slit-like paint supply path is shortened and the flow resistance of the paint decreases, resulting in uniform paint discharge height in the vicinity of the paint inflow port and the part away from it. Can be achieved.

また、上記塗料供給装置においては、前記塗料流入口が、前記塗料溜まり部の長手方向略中央部に設けられることが好ましい。すなわち、塗料供給口から塗料溜まり部端までの距離が抑えられ、塗料溜まり部内での塗料液圧の変化量が抑えられるので、塗料吐出高さの均一化が容易になる。 Moreover, in the said coating material supply apparatus, it is preferable that the said coating material inflow port is provided in the longitudinal direction approximate center part of the said coating material reservoir part. That is, the distance from the paint supply port to the end of the paint reservoir is suppressed, and the amount of change in the paint fluid pressure in the paint reservoir is suppressed, so that the paint discharge height can be made uniform easily.

しかも、上記塗料供給装置において、前記装置本体が、前記塗料供給路を境に分割可能とされることで、塗料溜まり部及び塗料供給路が洗浄し易くなる等、装置本体のメンテナンス性が向上する。 Moreover, in the paint supply apparatus, the apparatus main body can be divided with the paint supply path as a boundary, so that the paint reservoir and the paint supply path can be easily cleaned, and the maintainability of the apparatus main body is improved. .

このとき、前記装置本体が分割されてなる一方の分割体に、装置本体の分割面に沿う平坦部が設けられると共に、他方の分割体の前記平坦部と対向する部位には、基材幅方向に延設される複数の凹溝、及び前記分割面から所定量離間する離間面を形成する離間部が設けられ、前記凹溝と平滑部とで前記塗料溜まり部が形成されると共に、前記離間部と平滑部とで前記塗料供給路が形成されるような構成とすれば、塗料溜まり部及び塗料供給路を形成するための加工が前記他方の分割体に集約されるので、装置本体の製造を効率良く行うことが可能となる。しかも、塗料溜まり部や塗料供給路の仕様を変更する場合でも、前記一方の分割体を流用することが可能となる。 At this time, the one divided body obtained by dividing the apparatus main body is provided with a flat portion along the dividing surface of the apparatus main body, and a portion facing the flat portion of the other divided body has a base material width direction. A plurality of concave grooves extending in the space and a separation portion that forms a separation surface that is separated from the dividing surface by a predetermined amount. The paint reservoir portion is formed by the groove and the smooth portion, and the separation If the construction is such that the paint supply path is formed by the part and the smooth part, the processing for forming the paint reservoir part and the paint supply path is concentrated in the other divided body. Can be performed efficiently. In addition, even when the specifications of the paint reservoir and the paint supply path are changed, the one divided body can be used.

本発明によれば、装置本体内のエア溜まりを防止した上で塗料の基材幅方向での吐出高さの均一化を図ることができるため、塗布ムラの発生を抑えて均一で安定した塗工を行うことができる。
また、装置本体を分割構造とすることで、メンテナンス性を向上させると共に製造コストを低減させ、かつ汎用性を高めることができる。 According to the present invention, since it is possible to make the discharge height uniform in the substrate width direction of the coating material while preventing air accumulation in the apparatus main body, the occurrence of uneven coating can be suppressed and uniform and stable coating can be achieved. Work can be done.
Moreover, by making the apparatus main body into a divided structure, it is possible to improve maintainability, reduce manufacturing costs, and increase versatility.

以下、本発明の実施例を図面を参照して説明する。
図１は、この実施例における塗工機１の概略側面図であり、本図に示すように、塗工機１は、アンワインダ２にロール巻きされた紙あるいはプラスチックフィルム等の基材３を複数のガイドロール４等を用いて巻き出し、これを連続的に搬送しつつその表面に塗工処理を行った後に、この基材３をワインダ５で再度巻き取るように構成されている。なお、図１を含む各図における矢印Ｆは、基材３の搬送方向を示している。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic side view of a coating machine 1 in this embodiment. As shown in this figure, the coating machine 1 includes a plurality of substrates 3 such as paper or plastic film wound around an unwinder 2. The substrate 3 is unwound using a guide roll 4 and the like, and the substrate 3 is wound around again with a winder 5 after being coated on the surface while being continuously conveyed. In addition, the arrow F in each figure including FIG. 1 has shown the conveyance direction of the base material 3. FIG.

基材３への塗工処理は、該基材３表面にアプリケータユニット（塗料供給装置）１０及び計量装置７等により塗料等の所望の塗工液（以下、単に塗料という）の塗布を行う塗布工程と、基材３に塗布された塗料を乾燥装置８により乾燥させる乾燥工程とを経てなるものである。塗工処理が施された基材３は、適宜検反が行われた後にワインダ５に巻き取られて製品化されるようになっている。 In the coating process on the base material 3, a desired coating liquid (hereinafter simply referred to as a paint) such as a paint is applied to the surface of the base material 3 by an applicator unit (paint supply device) 10 and a measuring device 7. This is performed through an application process and a drying process in which the coating material applied to the base material 3 is dried by the drying device 8. The base material 3 to which the coating treatment has been applied is wound up by a winder 5 after being properly inspected, and is commercialized.

上記塗布工程における基材３は、二本のガイドロール４に支持されてこれらに渡って略水平に張架された状態となっており、このような基材３の下方には、基材表面（下面）にその幅方向（搬送方向と直交する方向）で所定の幅で塗料を吐出させることで該基材表面に塗料を供給する所謂ファウンテン式（噴水式）の前記アプリケータユニット１０と、該アプリケータユニット１０の基材搬送方向下流側に配置され基材表面上の余剰塗料を掻き落とすことで塗布量の計量を行う前記計量装置７とが設けられる。 The base material 3 in the coating step is supported by two guide rolls 4 and stretched substantially horizontally across them, and below the base material 3 is a base material surface. The so-called fountain-type (fountain-type) applicator unit 10 that supplies paint to the surface of the base material by discharging the paint to the (lower surface) with a predetermined width in the width direction (direction perpendicular to the transport direction); The metering device 7 is provided which is disposed on the downstream side of the applicator unit 10 in the substrate transport direction and measures the coating amount by scraping off the excess paint on the substrate surface.

図２に示すように、アプリケータユニット１０は、基材３の幅方向に沿って延設される例えばアルミ合金製のアプリケータ本体（装置本体）１１と、基材３への塗料の塗布幅を決定するべくアプリケータ本体１１の両側部に取り付けられる例えばフッ素樹脂製の一対のシム１２とを備えてなるもので、このアプリケータユニット１０が、アプリケータ本体１１の両端部に結合されたブラケット１３を介して塗工機１の不図示のフレームに支持されている。 As shown in FIG. 2, the applicator unit 10 includes an applicator main body (apparatus main body) 11 made of, for example, aluminum alloy that extends along the width direction of the base material 3, and the coating width of the paint on the base material 3. A pair of shims 12 made of, for example, fluororesin, which are attached to both sides of the applicator main body 11 to determine the applicator body 11. The applicator unit 10 is a bracket coupled to both ends of the applicator main body 11. 13 is supported by a frame (not shown) of the coating machine 1.

アプリケータ本体１１の長手方向（基材幅方向）略中央部には、塗料供給手段であるポンプ１４（図１参照）からの塗料流入口１５が設けられる。また、塗料流入口１５は、アプリケータ本体１１内に基材幅方向に延設される塗料溜まり部１６に設けられている。塗料溜まり部１６の最上部からは、略鉛直方向に沿うスリット状の塗料供給路１７が上方に向かって延び、アプリケータ本体１１の最上部（頂部）に開口して同じくスリット状の塗料吐出口１８を形成している。前記一対のシム１２は、塗料吐出口１８両側部をアプリケータ本体１１端から所定量閉塞するように取り付けられ、塗料吐出口１８からの塗料の吐出幅を規定している。 A paint inlet 15 from a pump 14 (see FIG. 1), which is a paint supply means, is provided at a substantially central portion in the longitudinal direction (base material width direction) of the applicator main body 11. The paint inlet 15 is provided in a paint reservoir 16 that extends in the base material width direction in the applicator main body 11. From the uppermost part of the paint reservoir 16, a slit-like paint supply path 17 extending substantially vertically extends upward, and opens to the uppermost part (top) of the applicator main body 11. 18 is formed. The pair of shims 12 are attached so that both sides of the paint discharge port 18 are closed by a predetermined amount from the end of the applicator main body 11, and define the discharge width of the paint from the paint discharge port 18.

このような構成のアプリケータユニット１０において、前記ポンプ１４からアプリケータ本体１１内に塗料が所定の供給圧で供給されると、該塗料が塗料溜まり部１６を通じて基材幅方向に行き渡ると共に、塗料溜まり部１６から塗料供給路１７に流入して整流されかつ流速が高められた上で、アプリケータ本体１１頂部の塗料吐出口１８から吐出するようになっている。塗料吐出口１８は基材３に近接配置されており、該塗料吐出口１８から吐出した塗料が基材表面にその幅方向で所定の幅となるように供給される。 In the applicator unit 10 having such a configuration, when the paint is supplied from the pump 14 into the applicator main body 11 at a predetermined supply pressure, the paint spreads in the substrate width direction through the paint reservoir 16, and the paint After flowing into the paint supply path 17 from the reservoir 16 and rectifying and increasing the flow velocity, it is discharged from the paint discharge port 18 at the top of the applicator main body 11. The paint discharge port 18 is disposed close to the substrate 3, and the paint discharged from the paint discharge port 18 is supplied to the substrate surface so as to have a predetermined width in the width direction.

基材３の幅方向中央部は、アプリケータ本体１１の長手方向中央部の略直上に位置しており、この状態で、例えば各シム１２がアプリケータ本体１１端からそれぞれ同一量だけ塗料吐出口１８を閉塞するように取り付けられることで、基材３の両側部に幅Ｎの塗料未塗布部が設けられるようになっている。 The center part in the width direction of the base material 3 is positioned substantially immediately above the center part in the longitudinal direction of the applicator main body 11. In this state, for example, each shim 12 is coated with the same amount from the end of the applicator main body 11. By being attached so as to close 18, the paint N uncoated portion with a width N is provided on both side portions of the base material 3.

図３を併せて参照して説明すると、アプリケータ本体１１は、基材搬送方向の上流側と下流側とで分割可能な構成とされる。アプリケータ本体１１を分割してなる分割体の内、基材搬送方向上流側のものを上流側分割体（一方の分割体）２１、下流側のものを下流側分割体（他方の分割体）２２とすると、これら各分割体２１，２２は、下流側分割体２２の両側部及び下部に挿通された複数の締結用ボルト２３を上流側分割体２１に締め込むことで一体的に締結される。なお、符号２５は、前記ブラケット１３とアプリケータ本体１１とを締結する締結用ボルト２４を締め込むためのナット孔である。 If it demonstrates with reference also in FIG. 3, the applicator main body 11 shall be the structure which can be divided | segmented into the upstream and downstream of a base material conveyance direction. Of the divided bodies obtained by dividing the applicator main body 11, the upstream divided body (one divided body) 21 is upstream of the substrate conveyance direction, and the downstream divided body (other divided body) is downstream. 22, these divided bodies 21 and 22 are fastened together by fastening a plurality of fastening bolts 23 inserted into both side portions and the lower part of the downstream divided body 22 into the upstream divided body 21. . Reference numeral 25 denotes a nut hole for fastening a fastening bolt 24 that fastens the bracket 13 and the applicator body 11.

アプリケータ本体１１の分割面２６は基材搬送方向と直交する略鉛直な平面とされ、該分割面２６上で突き合されるようにして各分割体２１，２２が結合されている。また、上流側分割体２１の下縁部には、分割面２６から搬送方向下流側に向かって突出する棚部２７が設けられる一方、下流側分割体２２の下縁部には、前記棚部２７に整合する整合部２８が設けられ、これら棚部２７と整合部２８とを嵌合させることで、各分割体２１，２２が上下方向で相対的に位置決めされている。 The dividing surface 26 of the applicator main body 11 is a substantially vertical plane orthogonal to the substrate conveyance direction, and the divided bodies 21 and 22 are joined so as to be abutted on the dividing surface 26. Further, a shelf 27 protruding from the dividing surface 26 toward the downstream side in the transport direction is provided at the lower edge of the upstream divided body 21, while the shelf is disposed at the lower edge of the downstream divided body 22. 27 is provided, and by aligning the shelves 27 and the matching portions 28, the divided bodies 21 and 22 are relatively positioned in the vertical direction.

図４に示すように、上流側分割体２１における下流側分割体２２と対向する部位は、前記棚部２７を除き、分割面２６を形成する平坦部３１とされる。一方、下流側分割体２２における上流側分割体２１と対向する部位には、平坦部３１と共に前記塗料溜まり部１６を形成する凹溝３２、分割面２６から所定量離間する離間面３３を形成しかつ平坦部３１と共に前記スリット状の塗料供給路１７を形成する離間部３４、平坦部３１と共に後に詳述する吐出側塗料溜まり部３５を形成する吐出側凹溝（凹溝）３６、及び前記整合部２８が設けられる。すなわち、アプリケータ本体１１は、スリット状の塗料供給路１７を境に分割されており、各分割体２１，２２の端部（平坦部３１及び離間部３４）が対向配置されることで、前記塗料供給路１７が形成されるようになっている。 As shown in FIG. 4, a portion of the upstream divided body 21 that faces the downstream divided body 22 is a flat portion 31 that forms the dividing surface 26 except for the shelf 27. On the other hand, in the part facing the upstream divided body 21 in the downstream divided body 22, a concave groove 32 that forms the paint reservoir 16 together with the flat portion 31, and a separation surface 33 that is separated from the divided surface 26 by a predetermined amount are formed. In addition, the separation portion 34 that forms the slit-like paint supply path 17 together with the flat portion 31, the discharge side concave groove (concave groove) 36 that forms the discharge side paint reservoir 35 described later in detail together with the flat portion 31, and the alignment A portion 28 is provided. That is, the applicator main body 11 is divided with the slit-shaped paint supply path 17 as a boundary, and the end portions (the flat portion 31 and the separating portion 34) of the respective divided bodies 21 and 22 are arranged to face each other. A paint supply path 17 is formed.

上流側分割体２１の上縁部は、アプリケータ本体１１の頂部の一部を形成するヘッド部材３７として上流側分割体２１の本体と別体構成される。このヘッド部材３７は例えばステンレス製のもので、前記本体の上縁部に複数のビス３８により固定される（図２参照）と共に、各ビス３８を緩めることでリップ部３９を基材搬送方向で移動可能とされる。ヘッド部３７は、上方に向かうほど基材搬送方向での厚さを減少させるように先細りに形成されるリップ部３９を有し、このリップ部３９が分割面２６と略同一面上に塗料吐出口１８の一方の内壁面を形成している。そして、ヘッド部材３７を適宜移動させ、リップ面を下流側分割体２２に対して近接離反させることで、塗料の粘度等に応じて塗料吐出口１８のスリット幅を調整可能である。 The upper edge of the upstream divided body 21 is configured separately from the main body of the upstream divided body 21 as a head member 37 that forms part of the top of the applicator main body 11. The head member 37 is made of, for example, stainless steel, and is fixed to the upper edge portion of the main body by a plurality of screws 38 (see FIG. 2), and the lips 39 are moved in the substrate transport direction by loosening the screws 38. It can be moved. The head portion 37 has a lip portion 39 formed so as to taper so as to decrease the thickness in the substrate transport direction as it goes upward, and the lip portion 39 is disposed on substantially the same surface as the dividing surface 26. One inner wall surface of the outlet 18 is formed. Then, the slit width of the paint discharge port 18 can be adjusted according to the viscosity of the paint and the like by appropriately moving the head member 37 and moving the lip surface close to and away from the downstream divided body 22.

下流側分割体２２の上縁部は、ヘッド部材３７と共にアプリケータ本体１１の頂部を形成すると共に、前記離間面３３と略同一面上に位置する塗料吐出口１８の他方の内壁面を形成している。また、下流側分割体２２の上部は、上方に向かうほど基材搬送方向での厚さを減少させるように先細りに形成されている。これにより、下流側分割体２２の上部には、滴下した塗料を良好に流下させるべく、例えば傾斜角度が約４５°の傾斜平面４０が形成される。なお、下流側分割体２２は、各凹溝３２等が形成される関係上、上流側分割体２１よりも基材搬送方向で厚い部材とされる。 The upper edge portion of the downstream divided body 22 forms the top portion of the applicator main body 11 together with the head member 37, and forms the other inner wall surface of the paint discharge port 18 located substantially on the same plane as the separation surface 33. ing. Further, the upper part of the downstream divided body 22 is formed to be tapered so as to decrease the thickness in the substrate transport direction as it goes upward. As a result, an inclined plane 40 having an inclination angle of about 45 °, for example, is formed at the upper part of the downstream divided body 22 in order to allow the dropped paint to flow down satisfactorily. The downstream divided body 22 is a member that is thicker in the substrate transport direction than the upstream divided body 21 in terms of the formation of the concave grooves 32 and the like.

図５を併せて参照して説明すると、塗料溜まり部１６（凹溝３２）は、断面略半楕円形状とされ、アプリケータ本体１１（下流側分割体２２）の両端近傍に渡って基材幅方向に延設される。この塗料溜まり部１６の長手方向中央部には、下流側分割体２２を基材搬送方向で貫通して塗料溜まり部１６をアプリケータ本体１１の外部に開口させる塗料流入口１５が設けられる。そして、塗料溜まり部１６は、長手方向で塗料流入口１５から離間する部位ほど上方に位置するように、塗料流入口１５近傍からその両端に向かって緩やかに傾斜して形成されている。 Referring to FIG. 5 together, the paint reservoir 16 (concave groove 32) has a substantially semi-elliptical cross section, and the width of the substrate over the vicinity of both ends of the applicator main body 11 (downstream divided body 22). It extends in the direction. A paint inlet 15 is provided at the center in the longitudinal direction of the paint reservoir 16 so as to pass through the downstream divided body 22 in the substrate transport direction and open the paint reservoir 16 to the outside of the applicator main body 11. The paint reservoir 16 is formed so as to be gently inclined from the vicinity of the paint inlet 15 toward both ends thereof so as to be positioned higher in the longitudinal direction as the part is separated from the paint inlet 15.

ここで、塗料供給路１７における塗料吐出口１８近傍には、上流側分割体２１の平坦部３１と下流側分割体２２の吐出側凹溝３６とで形成される前記吐出側塗料溜まり部３５が設けられる。この吐出側塗料溜まり部３５（吐出側凹溝３６）は、塗料溜まり部１６と同等の長さとなるように、かつその全長に渡って略水平となるように延設される。また、吐出側塗料溜まり部３５の断面は、塗料溜まり部１６よりも小形の略半円形状とされる。これにより、塗料と共に吐出側塗料溜まり部３５内にエアが侵入しても、該エアが吐出側塗料溜まり部３５（吐出側凹溝３６）の上部内壁の壁面に沿って塗料供給路１７側に案内される。すなわち、吐出側塗料溜まり部３５の上部内壁は、該吐出側塗料溜まり部３５内のエアを塗料供給路１７に案内する案内面３５ａを形成している（図４にのみ示す）。 Here, in the vicinity of the paint discharge port 18 in the paint supply path 17, the discharge-side paint reservoir 35 formed by the flat portion 31 of the upstream-side divided body 21 and the discharge-side concave groove 36 of the downstream-side divided body 22 is formed. Provided. The discharge-side paint reservoir 35 (discharge-side groove 36) is extended so as to have a length equivalent to that of the paint reservoir 16 and to be substantially horizontal over the entire length thereof. In addition, the cross section of the discharge-side paint reservoir 35 has a substantially semicircular shape that is smaller than the paint reservoir 16. As a result, even if air enters the discharge side paint reservoir 35 together with the paint, the air enters the paint supply path 17 side along the wall surface of the upper inner wall of the discharge side paint reservoir 35 (discharge side groove 36). Guided. That is, the upper inner wall of the discharge-side paint reservoir 35 forms a guide surface 35a for guiding the air in the discharge-side paint reservoir 35 to the paint supply path 17 (shown only in FIG. 4).

吐出側塗料溜まり部３５は、ポンプ１４からの供給圧や脈動等の影響を受けずに塗料液圧を基材幅方向で調整可能とするべく、塗料溜まり部１６からその上方に離間して配置され、かつ塗料が流通し易いように所定の大きさの断面形状とされている。その位置及び断面形状は、下流側分割体２２の上部に形成された傾斜面４０との関係で決定されるが、この実施例においては、塗料溜まり部１６の断面中心に対して吐出側塗料溜まり部３５の断面中心が約６０ｍｍ上方に位置しており、かつ塗料溜まり部１６の断面半径は約７．５ｍｍとされる。また、スリット状の塗料供給路１７の厚さは約２ｍｍであり、この塗料供給路１７が各塗料溜まり部１６，３５間に上下方向で約３２．５ｍｍの長さとなるように設けられている。 The discharge-side paint reservoir 35 is disposed away from the paint reservoir 16 so as to be able to adjust the paint fluid pressure in the substrate width direction without being affected by the supply pressure from the pump 14 or pulsation. The cross-sectional shape has a predetermined size so that the paint can be easily distributed. The position and the cross-sectional shape are determined by the relationship with the inclined surface 40 formed on the upper part of the downstream divided body 22, but in this embodiment, the discharge-side paint reservoir is relative to the center of the cross-section of the paint reservoir 16. The center of the cross section of the portion 35 is located about 60 mm above, and the cross section radius of the paint reservoir 16 is about 7.5 mm. The thickness of the slit-shaped paint supply path 17 is about 2 mm, and this paint supply path 17 is provided between the paint reservoirs 16 and 35 so as to have a length of about 32.5 mm in the vertical direction. .

またここで、塗料溜まり部１６の両端部近傍には、塗料溜まり部１６内の塗料液圧を調整する圧力解放弁（塗料液圧調整手段）４１がそれぞれ設けられる。
図６を併せて参照して説明すると、圧力解放弁４１は、下流側分割体２２を基材搬送方向で貫通する貫通孔４２内に取り付けられており、塗料液圧が所定値以上となった場合には、塗料溜まり部１６内の塗料の一部をアプリケータ本体１１の外部に流出させるようになっている。 Here, pressure release valves (paint fluid pressure adjusting means) 41 for adjusting the paint fluid pressure in the paint reservoir 16 are provided in the vicinity of both ends of the paint reservoir 16.
Referring to FIG. 6 as well, the pressure release valve 41 is mounted in a through hole 42 that penetrates the downstream divided body 22 in the substrate transport direction, and the coating fluid pressure becomes a predetermined value or more. In some cases, a part of the paint in the paint reservoir 16 is allowed to flow out of the applicator main body 11.

前記各シム１２は、断面一定で基材幅方向に延びる板状の部材であり、その上部が塗料吐出口１８の両内壁面に密接した状態で各分割体２１，２２に挟持されると共に、上部に対して基材搬送方向下流側に向かって板厚を増加させてなる下部が、シム１２の塗料吐出方向での脱落を防止するべく、吐出側塗料溜まり部３５内に入り込むように配置される。 Each of the shims 12 is a plate-like member having a constant cross section and extending in the width direction of the base material, and its upper portion is sandwiched between the divided bodies 21 and 22 in close contact with both inner wall surfaces of the paint discharge port 18. The lower part, which is increased in thickness toward the downstream side in the substrate transport direction with respect to the upper part, is arranged so as to enter the discharge side paint reservoir 35 to prevent the shim 12 from falling off in the paint discharge direction. The

下流側分割体２２における塗料溜まり部１６の下方及び両側方に位置する部位は、上流側分割体２１に分割面２６上で当接する当接部４３とされる。この当接部４３の両側部は、概ね吐出側塗料溜まり部３５の下縁高さまで設けられており、その上方には、シム１２の下部に整合し該シム１２を密接させるシム用整合部４４が設けられる（図３参照）。塗料吐出口１８の両内壁面はアプリケータ本体１１の両端まで至っており、アプリケータ本体１１の両端部において両分割体２１，２２でシム１２を挟持可能である。これにより、吐出側塗料溜まり部３５の両側部が閉塞され、かつ塗料吐出口１８の所定範囲が閉塞されるようになっている。 The parts located below and on both sides of the paint reservoir 16 in the downstream divided body 22 are contact parts 43 that contact the upstream divided body 21 on the dividing surface 26. Both side portions of the abutting portion 43 are generally provided up to the lower edge height of the discharge-side paint reservoir portion 35, and above that, a shim matching portion 44 that aligns with the lower portion of the shim 12 and closely contacts the shim 12. Is provided (see FIG. 3). Both inner wall surfaces of the paint discharge port 18 reach both ends of the applicator main body 11, and the shim 12 can be sandwiched between the two divided bodies 21 and 22 at both ends of the applicator main body 11. As a result, both sides of the discharge-side paint reservoir 35 are closed, and a predetermined range of the paint discharge port 18 is closed.

以上説明してきたように、上記実施例におけるアプリケータユニット１０は、基材表面に塗工処理を行う塗工機１に用いられ、連続的に搬送される基材３にその幅方向で所定の幅で塗料を吐出させることにより、前記基材表面への塗料の供給を行うものであって、アプリケータ本体１１内に基材幅方向に延設されると共に塗料流入口１５を有する塗料溜まり部１６と、該塗料溜まり部１６の最上部から略上方に向かって延びると共にアプリケータ本体１１の上部に開口して塗料吐出口１８を形成するスリット状の塗料供給路１７とを備え、塗料溜まり部１６の両端部近傍に圧力解放弁４１が設けられるものである。 As described above, the applicator unit 10 in the above embodiment is used in the coating machine 1 that performs the coating process on the surface of the base material, and is predetermined in the width direction on the base material 3 that is continuously conveyed. The coating material is supplied to the surface of the base material by discharging the coating material with a width, and extends in the base material width direction in the applicator main body 11 and has a coating material inlet 15. 16 and a slit-like paint supply path 17 that extends substantially upward from the uppermost part of the paint reservoir 16 and opens at the top of the applicator body 11 to form a paint discharge port 18. Pressure release valves 41 are provided in the vicinity of both end portions of 16.

この構成によれば、塗料流入口１５からアプリケータ本体１１内に流入した塗料は、塗料溜まり部１６内を流動して基材幅方向に行き渡りつつ、塗料流入口１５側から順次塗料供給路１７内に流入しながら、アプリケータ本体１１頂部近傍の塗料吐出口１８から所定幅で吐出される。
このとき、アプリケータ本体１１内に塗料を流入させれば、塗料供給開始時等における塗料溜まり部１６内の空気は、該塗料溜まり部１６の頂部から略上方に向かって延びる塗料供給路１７を経た後、塗料吐出口１８から自然排出されるため、アプリケータ本体１１内にエア溜まりが生じることはない。 According to this configuration, the paint flowing into the applicator main body 11 from the paint inlet 15 flows in the paint reservoir 16 and spreads in the base material width direction, and sequentially from the paint inlet 15 side to the paint supply path 17. While flowing in, it is discharged from the paint discharge port 18 near the top of the applicator body 11 with a predetermined width.
At this time, if the paint is allowed to flow into the applicator main body 11, the air in the paint reservoir 16 at the time of starting the supply of the paint or the like passes through the paint supply path 17 extending substantially upward from the top of the paint reservoir 16. After the passage, since the material is naturally discharged from the paint discharge port 18, no air pool is generated in the applicator main body 11.

また、例えば塗料溜まり部１６の端部近傍では、流動する塗料が塗料溜まり部１６端に突き当たることで局部的に塗料液圧が上昇することがあるが、このような部位に圧力解放弁４１が設けられることで、塗料液圧の局部的な上昇を抑制でき、塗料液圧の基材幅方向での均一化を図ることができる。これにより、塗料吐出口１８からの塗料の吐出高さの基材幅方向での均一化を図ることができる。 Further, for example, in the vicinity of the end of the paint reservoir 16, the paint fluid pressure may locally increase when the flowing paint hits the end of the paint reservoir 16. By being provided, a local increase in the coating fluid pressure can be suppressed, and the coating fluid pressure can be made uniform in the substrate width direction. Thereby, the discharge height of the paint from the paint discharge port 18 can be made uniform in the substrate width direction.

ここで、塗料溜まり部１６が、塗料流入口１５から離間する部位ほど上方に位置するように形成されることで、塗料流入口１５から離間するほどスリット状の塗料供給路１７が短縮されて塗料の流動抵抗が低下するため、塗料溜まり部１６内の塗料液圧が、塗料流入口１５から離間するほど塗料が塗料供給路１７内に順次流入する分だけ低下することがあっても、結果的に塗料流入口１５近傍とこれと離間した部位との塗料吐出高さの均一化を図ることができる。 Here, the paint reservoir portion 16 is formed so as to be positioned higher as the part away from the paint inlet 15, so that the slit-like paint supply path 17 is shortened as the part is away from the paint inlet 15. As a result, the paint fluid pressure in the paint reservoir 16 decreases as the paint fluid flows into the paint supply path 17 as the distance from the paint inlet 15 decreases. In addition, it is possible to make the paint discharge height uniform between the vicinity of the paint inlet 15 and the part away from the paint inlet 15.

また、塗料流入口１５が、塗料溜まり部１６の長手方向略中央部に設けられることで、塗料流入口１５から塗料溜まり部１６端までの距離が抑えられ、塗料溜まり部１６内での塗料液圧の変化量が抑えられるため、塗料吐出高さの均一化が容易になる。 Further, since the paint inlet 15 is provided at a substantially central portion in the longitudinal direction of the paint reservoir 16, the distance from the paint inlet 15 to the end of the paint reservoir 16 can be suppressed, and the paint liquid in the paint reservoir 16 can be reduced. Since the amount of change in pressure is suppressed, it is easy to make the paint discharge height uniform.

このように、上記アプリケータユニット１０においては、アプリケータ本体１１内のエア溜まりを防止した上で塗料の基材幅方向での吐出高さの均一化を図ることができるため、塗布ムラの発生を抑えて均一で安定した塗工を行うことができるという効果がある。 In this way, in the applicator unit 10, since it is possible to make the discharge height uniform in the substrate width direction of the coating material while preventing air accumulation in the applicator main body 11, the occurrence of coating unevenness occurs. There is an effect that uniform and stable coating can be performed while suppressing the above.

しかも、アプリケータ本体１１が、塗料供給路１７を境に分割可能とされることで、各塗料溜まり部１６，３５及び塗料供給路１７が洗浄し易くなる等、アプリケータ本体１１のメンテナンス性が向上する。 In addition, since the applicator body 11 can be divided with the paint supply path 17 as a boundary, the maintainability of the applicator body 11 is improved such that the paint reservoirs 16 and 35 and the paint supply path 17 can be easily cleaned. improves.

このとき、アプリケータ本体１１が分割されてなる上流側分割体２１に、分割面２６に沿う平坦部３１が設けられると共に、下流側分割体２２の平坦部３１と対向する部位には、基材幅方向に延設される各凹溝３２，３６、及び分割面２６から所定量離間する離間面３３を形成する離間部３４が設けられ、各凹溝３２，３６と平坦部３１とで各塗料溜まり部１６，３５が形成されると共に、離間部３４と平坦部３１とで塗料供給路１７が形成されるような構成とすることで、各塗料溜まり部１６，３５及び塗料供給路１７を形成するための加工が前記下流側分割体２２に集約されるため、アプリケータ本体１１の製造を効率良く行うことが可能となる。しかも、各塗料溜まり部１６，３５や塗料供給路１７の仕様を変更する場合でも、前記上流側分割体２１を流用することが可能となる。なお、上流側及び下流側分割体２１，３１の構造を上記の逆、つまり下流側分割体２２に平坦部３１を設けると共に、上流側分割体２１に塗料流入口１５、各凹溝３２，３６、及び離間部３４等を設けた構造としてもよい。 At this time, the upstream divided body 21 obtained by dividing the applicator main body 11 is provided with a flat portion 31 along the dividing surface 26, and the portion facing the flat portion 31 of the downstream divided body 22 is provided with a base material. Each concave groove 32, 36 extending in the width direction and a separation portion 34 forming a separation surface 33 that is separated from the dividing surface 26 by a predetermined amount are provided, and each coating material is formed by the respective concave grooves 32, 36 and the flat portion 31. The paint reservoirs 16 and 35 and the paint supply channel 17 are formed by forming the paint supply channels 17 with the separation portion 34 and the flat portion 31 while forming the reservoirs 16 and 35. Since the processing for doing this is concentrated in the downstream divided body 22, the applicator body 11 can be manufactured efficiently. Moreover, even when the specifications of the paint reservoirs 16 and 35 and the paint supply path 17 are changed, the upstream divided body 21 can be used. The structure of the upstream and downstream divided bodies 21 and 31 is the reverse of the above, that is, the flat section 31 is provided in the downstream divided body 22, and the paint inlet 15 and the concave grooves 32 and 36 are provided in the upstream divided body 21. , And the separation portion 34 or the like may be provided.

このように、上記アプリケータユニット１０においては、アプリケータ本体１１を分割構造とすることで、メンテナンス性を向上させると共に製造コストを低減させ、かつ汎用性を高めることができるという効果がある。 As described above, in the applicator unit 10, the applicator main body 11 has a split structure, so that there are effects that the maintainability can be improved, the manufacturing cost can be reduced, and the versatility can be increased.

なお、本発明は上記実施例に限られるものではなく、例えば、塗工機１は、メイヤーバー式の計量装置７を用いて塗料を掻き落とすものに限らず、例えば平滑な丸棒を用いるロッド式や固定ブレード式、あるいはエアーナイフ式を用いるものであってもよい。
また、圧力解放弁４１の設置位置は、塗料溜まり部における両端部近傍に限らず、かつ必要に応じて設置個数を変更してもよい。特に、圧力解放弁を多数設置することにより、基材幅方向の液圧をより正確に調整することが可能である。
さらに、スリット状の塗料供給路１７は、塗料溜まり部１６から直線状に延びるものに限らず、例えば所定の曲率を有するようなものであってもよい。
さらにまた、吐出側塗料溜まり部３５が複数設けられる構成とすれば、上記同様に塗料液圧をより正確に調整することが可能である。
そして、上記実施例における構成は一例であり、発明の要旨を逸脱しない範囲で種々の変更が可能であることはいうまでもない。 In addition, this invention is not restricted to the said Example, For example, the coating machine 1 is not restricted to scraping off a coating material using the Mayer bar type measuring device 7, For example, the rod which uses a smooth round bar A type, a fixed blade type, or an air knife type may be used.
Moreover, the installation position of the pressure release valve 41 is not limited to the vicinity of both ends of the paint reservoir, and the number of installation may be changed as necessary. In particular, by installing a large number of pressure release valves, it is possible to adjust the hydraulic pressure in the substrate width direction more accurately.
Furthermore, the slit-shaped paint supply path 17 is not limited to a straight line extending from the paint reservoir 16 and may have, for example, a predetermined curvature.
Furthermore, if a configuration is provided in which a plurality of discharge-side paint reservoirs 35 are provided, the paint fluid pressure can be adjusted more accurately as described above.
And the structure in the said Example is an example, and it cannot be overemphasized that a various change is possible in the range which does not deviate from the summary of invention.

本発明の実施例における塗工機の概略側面図である。It is a schematic side view of the coating machine in the Example of this invention. 図１における矢印Ａ方向から見たアプリケータユニットの正面図である。It is a front view of the applicator unit seen from the arrow A direction in FIG. 図２における矢印Ｂ方向から見た側面図である。It is the side view seen from the arrow B direction in FIG. 図２におけるＣ−Ｃ線に沿う断面図である。It is sectional drawing which follows the CC line in FIG. 下流側分割体を図２に相当する方向から見た正面図である。It is the front view which looked at the downstream divided body from the direction equivalent to FIG. 図２におけるＤ−Ｄ線に沿う断面図である。It is sectional drawing which follows the DD line | wire in FIG.

符号の説明Explanation of symbols

１塗工機
３基材
１０アプリケータユニット（塗料供給装置）
１１アプリケータ本体（装置本体）
１５塗料流入口
１６塗料溜まり部
１７塗料供給路
１８塗料吐出口
２１上流側分割体（一方の分割体）
２２下流側分割体（他方の分割体）
２６分割面
３１平滑部
３２凹溝
３３離間面
３４離間部
４１圧力解放弁（塗料液圧調整手段）

1 Coating machine 3 Base material 10 Applicator unit (paint supply device)
11 Applicator body (device body)
DESCRIPTION OF SYMBOLS 15 Paint inlet 16 Paint reservoir 17 Paint supply path 18 Paint discharge port 21 Upstream side division body (one division body)
22 Downstream segment (the other segment)
26 Dividing surface 31 Smoothing portion 32 Concave groove 33 Separating surface 34 Separating portion 41 Pressure release valve (paint fluid pressure adjusting means)

Claims

基材表面に塗工処理を行う塗工機に用いられ、連続的に搬送される基材にその幅方向で所定の幅で塗料を吐出させることにより、前記基材表面への塗料の供給を行う塗料供給装置において、
装置本体内に基材幅方向に延設されると共に塗料流入口を有する塗料溜まり部と、該塗料溜まり部の最上部から略上方に向かって延びると共に前記装置本体の上部に開口して塗料吐出口を形成するスリット状の塗料供給路とを備え、
前記塗料溜まり部に、少なくとも一つの塗料液圧調整手段が設けられることを特徴とする塗料供給装置。 It is used in a coating machine that performs a coating process on the surface of a substrate, and the coating material is supplied to the substrate surface by causing the substrate to be continuously conveyed to discharge the coating material with a predetermined width in the width direction. In the paint supply device to perform,
A paint reservoir portion extending in the width direction of the base material in the apparatus main body and having a paint inlet, and extending substantially upward from the uppermost portion of the paint reservoir section and opening at the top of the apparatus main body to discharge the paint. A slit-shaped paint supply path that forms an outlet,
The paint supply device, wherein the paint reservoir is provided with at least one paint fluid pressure adjusting means.

前記塗料液圧調整手段が、前記塗料溜まり部の端部近傍に設けられることを特徴とする請求項１に記載の塗料供給装置。 The paint supply apparatus according to claim 1, wherein the paint hydraulic pressure adjusting means is provided in the vicinity of an end of the paint reservoir.

前記塗料溜まり部が、前記塗料流入口から基材幅方向において離間するほど上方に変化するように形成されることを特徴とする請求項１又は請求項２に記載の塗料供給装置。 The paint supply apparatus according to claim 1, wherein the paint reservoir is formed so as to change upward as it is separated from the paint inlet in the substrate width direction.

前記塗料流入口が、前記塗料溜まり部の長手方向略中央部に設けられることを特徴とする請求項１から請求項３の何れかに記載の塗料供給装置。 The paint supply apparatus according to any one of claims 1 to 3, wherein the paint inflow port is provided at a substantially central portion in the longitudinal direction of the paint reservoir.

前記装置本体が、前記塗料供給路を境に分割可能とされることを特徴とする請求項１から請求項４の何れかに記載の塗料供給装置。 The paint supply apparatus according to any one of claims 1 to 4, wherein the apparatus main body can be divided with the paint supply path as a boundary.

前記装置本体が分割されてなる一方の分割体に、装置本体の分割面に沿う平坦部が設けられると共に、他方の分割体の前記平坦部と対向する部位には、基材幅方向に延設される凹溝、及び前記分割面から所定量離間する離間面を形成する離間部が設けられ、前記凹溝と平滑部とで前記塗料溜まり部が形成されると共に、前記離間部と平滑部とで前記塗料供給路が形成されることを特徴とする請求項５に記載の塗料供給装置。

One divided body obtained by dividing the apparatus main body is provided with a flat portion along the dividing surface of the apparatus main body, and a portion facing the flat portion of the other divided body is extended in the substrate width direction. And a spacing portion that forms a spacing surface that is spaced apart from the dividing surface by a predetermined amount, and the paint reservoir portion is formed by the recessed groove and the smooth portion, and the spacing portion and the smooth portion The paint supply device according to claim 5, wherein the paint supply path is formed.