1220868 五、發明說明（1 ) 【發明所屬之技術領域】 本發明係有關於一種多彩花樣塗裝設備以及多彩花樣 塗裝方法，係爲即使在線圏塗層等高速塗裝中，亦可藉由 噴霧塗裝而形成均勻地多彩花樣塗膜。 【先前技術】1220868 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a colorful pattern coating equipment and a colorful pattern coating method, which can be used even in high-speed coating such as line coating. Spray coating to form a uniform colorful pattern coating film. [Prior art]
習知，在移動被塗物進行噴霧塗裝之際，係使噴槍於 移動之被塗物的寬度方向上大幅進行往復運動（互動）以 進行塗裝，因此，塗裝軌跡係形成爲較大z字型。從而， 當增快被塗物之移動速度、以呈一般爲4m/分以上之速度 時，在被塗物上係具有產生未塗裝部分、且塗裝膜厚之不 均增大的問題。It is known that when spraying paint on a moving object, the spray gun is reciprocated (interactively) in the width direction of the moving object to perform painting. Therefore, the painting trajectory is formed to be large. z-shaped. Therefore, when the moving speed of the coated object is increased to a speed of generally 4 m / min or more, there is a problem that an uncoated portion is generated on the coated object and the unevenness of the coating film thickness increases.
而在將多彩花樣形成於被塗物上的情況下，因塗裝膜 厚之不均所造成的花樣不均係會顯著地呈現，因此，減少 塗裝膜厚之不均係爲特別必要。此外，雖考慮有增大噴槍 之往復速度來除去未塗裝部分之產生或塗裝膜厚之不均， 不過，當增大噴槍之往復速度時，將會藉由自噴嘴所吐出 之塗料粒子的大小而使塗料粒子之直進性有顯著差別，因 而有花樣圖形產生混亂之問題。 作爲用以解決上述問題點之物，本案申請人係於曰本 專利特開平2000_296357號公報中提出一種方法，係爲在 線圈塗層等高速塗裝中藉由噴霧塗裝而以均勻狀態下形成 在美觀性極爲優越之多彩花樣的方法，亦即爲使用2台以 上具有2個以上之塗料吐出噴嘴的噴霧塗裝機，使不同塗 1220868 五、發明說明（2) 裝顏色之塗料由該各噴霧塗裝裝置之至少2個塗料吐出噴 嘴相互吐出，而形成多個混有該不同塗裝顏色之塗料的單 位複色噴霧圖形，而在該被塗物上，藉由該多數單位複色 噴霧圖形所形成之各單位多色花樣圖形之一部份，係呈與 藉由相鄰單位複色噴霧圖形所形成之單位多色花樣圖形重 合般地以進行噴霧塗裝之方法。 藉由此種方法雖可解決上述問題點，不過，在實際塗 裝生產線上，將有因各塗色之吐出量變動所造成花樣再現 性、或因藉由空氣霧化塗裝所造成之粉末飛散所造成之問 題點。 【發明內容】 〔發明所欲解決之技術問題〕 本發明之目的係爲提供一種多彩花樣塗裝設備以及多 彩花樣塗裝方法，係爲解決上述問題，對於高速移動之帶 狀被塗物，可將以均勻狀態下形成在美觀性極爲優越之多 彩花樣塗膜藉由噴霧塗裝來形成。 〔解決問題之技術手段〕 本發明係爲提供有下列構造： 1. 一種塗裝設備，爲在以速度爲l〇m/分以上移動之 帶狀被塗物上，噴霧塗裝2色以上之塗料而形成多彩花樣 塗膜，其特徵在於，該塗裝設備係具備有， 塗裝裝置，爲使具有2個以上塗料吐出噴嘴之多數噴 霧塗裝機固定在塗裝機支撐體上，將該各塗料吐出噴嘴朝 1220868 五、發明說明（3) 向被塗物面配置，使不同塗裝顏色之塗料由該各噴霧塗裝 裝置之至少2個塗料吐出噴嘴相互吐出； 塗料供給裝置，爲將儲藏於個別槽中之2色以上的塗 料，經由泵而供給至各噴霧塗裝機之各塗料吐出噴嘴；以 及 局部排氣裝置，爲捕獲在該噴霧塗裝時產生之塗料粉 末。 2. 如第1項之塗裝設備，其中爲使多數噴霧塗裝機同 時於相同方向上短距離的進行往復運動，且一面進行噴霧 塗裝。 3. 如第1項或第2項之塗裝設備，其中各噴霧塗裝機 係爲具有接近狀之2個以上之塗料吐出噴嘴的多噴嘴噴 槍。 4. 如第1至3項中任一項之塗裝設備’其中塗裝裝置 爲自送式，係在所指定之被塗物面之塗裝時爲前進’塗裝 結束時爲後退者。 5 .如第1項之塗裝設備，其中塗裝供給裝置係爲，具 有可將來自各色塗料噴嘴之吐出量調整以在塗料供給路徑 中之塗料流量値進行調整的規格。 6.如第1項之塗裝設備，其中具備有洗淨裝置，爲將 各塗料供給路徑及各噴霧塗裝機自動洗、淨° 7 ·如第1至6項中任一項之塗裝設備’其中在以速度 爲10m/分以上移動之帶狀被塗物的塗裝生產線上’並非重 1220868 五、發明說明（5) 置與所獲得之花樣圖形之槪念圖。 在第1圖中，1係表示塗裝裝置、2係表示塗料供給裝 置、3係表示局部排氣裝置、4係表示洗淨裝置、5係表示 塗裝裝置自送軌道、6係表示帶狀被塗物、7係表示滾筒 塗覆部。帶狀被塗物6係藉由滾筒塗覆部7而實施底漆塗 裝或是著色保護塗裝。 塗裝裝置1係爲，將具有2個以上塗料吐出噴嘴之多 數噴霧塗裝機5 0a〜5 0e固定在塗裝機支撐體51上，將該 各塗料吐出噴嘴朝向被塗物6之被塗面、且以千鳥格狀配 置各噴霧塗裝機5 0a〜5 0e，使不同塗裝顏色之塗料由該各 噴霧塗裝機50a〜50e之至少2個塗料吐出噴嘴相互吐 出。 作爲在本發明中所使用之具有2個以上塗料吐出噴嘴 之多數噴霧塗裝機 5〇a〜5 0e，係可列舉有例如多噴嘴噴 槍、多頭噴槍、旋轉霧化塗裝機等。 上述噴嘴噴槍係一種塗裝機，爲在塗裝機上具有1個 塗裝槍頭，該塗裝槍頭係爲具有呈接近狀之2個以上的塗 料吐出噴嘴。由多噴嘴噴槍之各塗料吐出噴嘴相互吐出不 同塗裝顏色之塗料，而可形成混有該不同塗裝顏色之塗料 的複色噴霧圖形。 作爲多噴嘴噴槍，係可列舉有例如日本專利特開平9 -29983 3號公報中之噴槍。多噴嘴噴槍之噴嘴位置係可爲混 合由各噴嘴所吐出不同顏色之塗料、而在被塗物上形成均 1220868 五、發明說明（6) 勻之花樣塗料層的位置，例如，亦可配置呈獨立2個以上 之噴嘴，此外，各噴嘴係呈一體配置呈同心圓狀，且形成 內側之噴嘴及外側之甜甜圏狀之噴嘴亦可。 在各個噴槍中，係可藉由更換各塗料吐出噴嘴（a、 b、c、d)之配置而將塗料粒子之混合程度作一調節。亦 即，藉由使各塗料吐出噴嘴構件之間接近至足可接觸之程 度，而可大幅提昇由各塗料吐出噴嘴所吐出之各塗料粒子 的混合程度。若分離各塗料吐出噴嘴構件後便減少各塗料 粒子之混合程度。雖然各塗料吐出噴嘴間之距離並未有特 別之限定，不過通常塗料噴出噴嘴間之距離係以在1 5mm 以下之範圍、較佳爲10mm以下之範圍、更佳爲5mm以下 之範圍內者爲適當。 當多噴嘴噴槍之塗料吐出噴嘴爲具有3個以上的情況 下，可由各個塗料吐出噴嘴吐出不同顏色之塗料，以可僅 使用必要數量之噴嘴（例如在4個噴嘴中之2個噴嘴）而 噴霧出不同顏色之塗料。 另一方面，多頭噴槍係例如於日本專利特開平1 2-8 4479號公報所示，於塗裝機中具有2個以上之塗裝噴 槍，在各塗裝槍頭上則具有各1個之塗料吐出噴嘴，而塗 料吐出噴嘴係非爲靠近之物。將多頭噴槍之各塗裝頭之各 塗料吐出噴嘴（合計2個以上）朝向被塗物而呈對向，將 由2個以上塗料吐出噴嘴所吐出之不同顏色之塗料粒子形 成以混合之複色噴霧圖形，藉此而可形成多彩花樣塗膜。 1220868 五、發明說明（7) 此外，將2個空氣噴槍之各噴嘴方向在被塗面抵接於各噴 霧圖形前交錯、形成複色噴霧圖形，以使在被塗物上可形 成多彩花樣塗膜般地藉由定位固定而可如多頭噴槍般地作 動。 在第1圖中所例不之噴霧塗裝機50a〜50e係爲一*種多 噴嘴噴槍，爲具有4個接近之塗料吐出噴嘴。在本發明 中，爲可同時使該等噴霧塗裝機50a〜5 0e於相同方向以 短距離往復運動、且一面進行噴霧塗裝。 具備有該噴霧塗裝機50a〜5 0e之塗裝裝置1係設置於 自送軌道5上，配置呈在被塗物6之塗裝時爲前進該軌道 上，而可對被塗物6進行塗裝，在塗裝結束時則沿著軌道 後退、離開被塗物6。後退之後，係可進行噴槍之洗淨或 換色以待機直至下次塗裝爲止。 局部排氣裝置3係爲捕獲藉由上述塗裝裝置1在噴霧 塗裝時產生之塗料粉末之物。吸引塗料粉末之管9a〜9c 係爲，主要配置在移動之被塗物6之兩側面與被塗物6之 塗面上。藉由排氣風扇（圖中未示）之驅動，將以管9a〜 I 9c所吸引之塗料粉末通過可撓性軟管8以進行排氣。In the case where colorful patterns are formed on an object to be coated, the pattern unevenness caused by the uneven thickness of the coating film will be prominently displayed. Therefore, it is particularly necessary to reduce the unevenness of the coating film thickness. In addition, although it is considered to increase the reciprocating speed of the spray gun to eliminate the occurrence of unpainted parts or uneven coating thickness, when the reciprocating speed of the spray gun is increased, the paint particles discharged from the nozzle will be used. The size of the paint particles has a significant difference in the straightness of the paint particles, so there is a problem that the pattern pattern is confused. As a means to solve the above-mentioned problems, the applicant of this case proposed a method in Japanese Patent Laid-Open No. 2000_296357, which is formed in a uniform state by spray coating in high-speed coating such as coil coating. The method of colorful patterns with excellent aesthetics, that is, the use of two or more spray coating machines with two or more paint spray nozzles to make different coatings 1220868 V. Description of the invention (2) The paints with color are made by the At least two paint spraying nozzles of the spray coating device eject each other to form a plurality of unit multi-color spray patterns mixed with paints of different coating colors, and on the object to be coated, the multi-unit multi-color spray is sprayed. A part of each unit multicolor pattern pattern formed by the pattern is a spray coating method that overlaps with the unit multicolor pattern pattern formed by adjacent unit multicolor spray patterns. Although the above problems can be solved by this method, in the actual coating production line, there will be pattern reproducibility caused by variations in the discharge amount of each coating color, or powder caused by air atomization coating. Problems caused by flying. [Summary of the Invention] [Technical Problems to be Solved by the Invention] The object of the present invention is to provide a colorful pattern coating equipment and a colorful pattern coating method. In order to solve the above problems, for a belt-like coating object moving at a high speed, A multi-colored pattern coating film which is formed in a uniform state and has excellent appearance is formed by spray coating. [Technical means to solve the problem] The present invention is to provide the following structure: 1. A coating device for spray-coating two or more colors on a belt-like coating object moving at a speed of 10 m / min or more The coating device forms a colorful pattern coating film, and the coating equipment is provided with a coating device for fixing a plurality of spray coating machines having two or more paint discharge nozzles to a coating machine support body, and Each paint spray nozzle faces 1220868 V. Description of the invention (3) It is arranged on the surface of the object to be coated, so that paints of different coating colors are discharged from each other by at least two paint spray nozzles of each spray coating device; Two or more colors of paint stored in individual tanks are supplied to each paint spray nozzle of each spray coating machine via a pump; and a local exhaust device is used to capture paint powder generated during the spray coating. 2. The coating equipment according to item 1, in order to make most spray coating machines reciprocate in a short distance in the same direction at the same time, and spray coating on one side. 3. The coating equipment according to item 1 or item 2, wherein each spray coating machine is a multi-nozzle spray gun having two or more close-up paint discharge nozzles. 4. The coating equipment according to any one of items 1 to 3, in which the coating device is self-propelled, and it is forward when the designated surface of the object to be coated is painted. 5. The coating equipment according to item 1, wherein the coating supply device has a specification capable of adjusting the discharge amount from each color paint nozzle to adjust the paint flow rate in the paint supply path. 6. The coating equipment according to item 1, which is provided with a cleaning device, which automatically cleans and cleans each paint supply path and each spray coating machine. ° 7 · Coating according to any one of items 1 to 6 The equipment 'where on the coating production line of the belt-shaped coating object moving at a speed of 10m / min or more' is not heavy 1220868 V. Description of the invention (5) The drawing of the design and the obtained figure. In the first figure, 1 indicates a painting device, 2 indicates a paint supply device, 3 indicates a local exhaust device, 4 indicates a cleaning device, 5 indicates a self-propelled rail of the coating device, and 6 indicates a belt shape. The to-be-coated object and 7 are the roller coating parts. The belt-shaped object 6 is subjected to primer coating or color protection coating by the roller coating portion 7. The coating device 1 is a device for fixing a plurality of spray coaters 50a to 50e having two or more paint discharge nozzles to a coater support 51, and coating the paint discharge nozzles toward the coating object 6. The spray coating machines 50a to 50e are arranged in a houndstooth pattern on the surface, so that paints of different coating colors are discharged from each other by at least two paint discharge nozzles of the spray coating machines 50a to 50e. Examples of the most spray coating machines 50a to 50e having two or more paint discharge nozzles used in the present invention include a multi-nozzle spray gun, a multi-head spray gun, and a rotary atomizing coating machine. The nozzle spray gun is a coating machine having a coating nozzle on the coating machine, and the coating nozzle is provided with two or more coating discharge nozzles which are close to each other. Multi-nozzle spray guns discharge paints of different paint colors to each other, and can form a multi-color spray pattern mixed with paints of different paint colors. Examples of the multi-nozzle spray gun include the spray guns disclosed in Japanese Patent Laid-Open No. 9-29983 3. The position of the nozzle of the multi-nozzle spray gun can be a mixture of different colors of paint sprayed from each nozzle to form 1220868 on the object to be coated. 5. Description of the invention (6) The position of the uniform pattern coating layer, for example, it can be configured There are two or more independent nozzles. In addition, each nozzle is arranged in a concentric circle, and the nozzles on the inner side and the nozzles on the outer side can also be sweet. In each spray gun, the mixing degree of paint particles can be adjusted by changing the configuration of each paint discharge nozzle (a, b, c, d). That is, the degree of mixing of the paint particles ejected from the paint ejection nozzles can be greatly increased by bringing the paint ejection nozzle members close to each other to a sufficient degree of contact. If the paint is separated and the nozzle member is separated, the degree of mixing of the paint particles is reduced. Although the distance between the paint spray nozzles is not particularly limited, in general, the distance between the paint spray nozzles is in a range of 15 mm or less, preferably in a range of 10 mm or less, and more preferably in a range of 5 mm or less. appropriate. When the multi-nozzle spray gun has three or more paint discharge nozzles, paints of different colors can be discharged from each paint discharge nozzle, so that only a necessary number of nozzles (for example, two of four nozzles) can be used for spraying Paint in different colors. On the other hand, a multi-head spray gun is shown in, for example, Japanese Patent Laid-Open No. 1 2-8 4479. There are two or more coating spray guns in a coating machine, and one paint for each coating gun head. The discharge nozzle is not close to the paint discharge nozzle. The paint spray nozzles (a total of 2 or more) of the coating heads of the multi-head spray gun face the object to be coated, and paint particles of different colors sprayed from the paint spray nozzles are formed into a mixed multi-color spray. The pattern can be used to form a colorful pattern coating film. 1220868 V. Description of the invention (7) In addition, the directions of the nozzles of the two air spray guns are staggered before the coated surface abuts the spray patterns to form a multi-color spray pattern, so that a colorful pattern can be formed on the coated object. The film can be actuated like a multi-head spray gun by positioning and fixing. The spray coating machines 50a to 50e exemplified in Fig. 1 are a multi-nozzle type multi-nozzle spray gun, and have four close-up paint discharge nozzles. In the present invention, the spray coating machines 50a to 50e can be simultaneously reciprocated in a short distance in the same direction, and spray coating is performed on one side. The coating device 1 provided with the spray coating machine 50a to 50e is installed on the self-conveying track 5 and is arranged to advance on the track when the coating 6 is applied, and the coating 6 can be performed on the coating 6 At the end of the painting, the paint retreats along the track and leaves the object 6. After retreating, you can clean the spray gun or change the color to wait until the next painting. The local exhaust device 3 captures the paint powder generated by the coating device 1 during spray coating. The tubes 9a to 9c for attracting the paint powder are mainly arranged on both sides of the moving object 6 and the coated surface of the object 6 to be coated. Driven by an exhaust fan (not shown), the paint powder attracted by the tubes 9a to 9c is passed through a flexible hose 8 to exhaust.
I 塗料供給裝置2係爲，將分別儲藏於槽中之A色、B ! 色之塗料，經由泵而分別供給至各噴霧塗裝機50a〜50e 之各4個塗料吐出噴嘴。塗料供給裝置2爲藉由各塗裝顏 t之吐出量變動而確保花樣之再現性，而將來自各A色、 :3色塗料之噴嘴的最終吐出量調整，而具有以調整呈在塗 1220868 五、發明說明（8 ) 料供給路徑中之塗料流量値的方式，此係揭示於第2圖。 在第2圖中，爲簡化說明，而針對噴霧塗裝機50a〜5 0e 中之2座機器，顯示出僅使用各機器之多噴嘴中之2噴嘴 的情況。 在第2圖中，充塡至A色塗料槽之A色塗料係藉由定 量泵而經由三向閥進行循環，充塡至B色塗料槽之B色塗 料亦藉由定量泵而經由三向閥進行循環。該等塗料係爲， 分別藉由三向閥而以流路變更分別傳送至環管轉換閥，自 此而供給至各噴槍之各塗料吐出噴嘴。各二向閥之流路變 更以及來自定量泵之流量係藉由控制部（圖中未示）而控 制。在各定量泵中’係使用有齒輪泵，係爲以反向器（圖 中未示）而可控制轉樹脂AC伺服馬達來驅動。藉由此種 齒輪泵來調整各三向閥之塗料流量値，藉此而確保來自各 色塗料之吐出噴嘴的最終吐出量調整。藉此，以在各吐出 噴嘴中之吐出量變動控制顏色變動等，而可調整花樣發現 性。 在本發明中，又如第1圖所示，可具備有自動洗淨各 塗料供給路徑及各噴霧塗裝機之洗淨裝置4。爲防止由連 續霧化塗裝造成噴槍本體污損而導致塗料吐沬的產生，而 以噴槍污損界限時間前自動的洗淨各塗料供給路徑及各噴 霧塗裝機者爲佳。洗淨裝置4係爲，將由洗淨溶媒壓送泵 10所壓送之洗淨溶媒通過洗淨溶媒液噴管、而傳送至洗淨 噴嘴1 3，去除噴槍本體之污損，更將流動用氣體經由洗淨 -10- 1220868 五、發明說明（9) 溶媒配管洗淨用空氣室1 1或塗料配管霧化用空氣室1 2而 傳送、乾燥。供給路徑內與噴嘴之洗淨系統係如第2圖所 示’充塡於洗淨溶媒槽之洗淨溶媒係藉由壓送泵而分別送 至環管轉換閥，自此而進行供給至各噴槍之各塗料吐出噴 嘴的洗淨，更甚者，流動用空氣係分別供給至各環管轉換 閥與各塗料吐出噴嘴、且使其乾燥之物。藉由壓送泵而傳 送之液體或空氣係藉由控制部（圖中未示）來控制。 如上述所構成之本發明的塗裝設備係爲，在既有之以 速度l〇m/分以上進行移動之帶狀被塗物或是新設之塗裝生 產線上，並非重組該塗裝生產線，而是自由追加或是在可 排除的情況下設置各裝置者爲佳。藉此，即使在線圈塗層 等塗裝生產線上亦無須分解設備。 在本發明方法中，係將上述塗裝設備使用在將2色以 上之塗料爲以速度爲1〇ηι/分以上、較佳爲20〜120m/分來 進行移動的帶狀被塗物，且進行噴霧塗裝。被塗裝之塗膜 係在乾燥爐中藉由燒結硬化而形成多彩花樣塗膜。 使用上述噴霧塗裝機，使具有2色不同塗裝顏色之塗 料自具有2個以上塗料吐出噴嘴之噴槍之至少2個塗料吐 出噴嘴吐出。藉此’形成混有由各噴嘴所吐出之塗料的複 色噴霧圖形。在噴霧圖形中之塗料的混合程度係爲，在可 形成多彩花樣塗膜之範圍內’可因應作爲目的之花樣來決 定，並藉由適當調整塗料黏度、塗料吐出量等塗裝條件等 而進行調節。塗裝時之塗料黏度係通常爲以光耦合器#4 -11- 1220868 五、發明說明（1〇) (20 °C )的測定下，一般係以1 0〜40秒之範圍內者爲 佳。塗料之霧化空氣壓通常係在0.5〜10kgf/cm2之範圍內 者爲佳，而圖形空氣壓通常係以在0.1〜4kgf/cm2之範圍 內者爲佳。 由如上述所形成之塗裝機所得之單位複色噴霧圖形的 形狀，亦可爲真圓狀、亦可爲橢圓狀，並未有特別之限定。 在本發明中，組合有多個噴霧塗裝機所形成之多數單 位複色噴霧圖形，形成相鄰之單位多色花樣圖形所重合之 多重多彩花樣圖形。相鄰之單位多色花樣圖形之重合程度 係爲，在各單位多彩花樣圖形之間、重疊程度最大之線 上，通常係以呈1/6〜1/2、較佳爲1/3〜1/2之範圍內（在 各單位多彩花樣圖形爲圓的情況下，爲在其直徑範圍之 1/6〜1/2、較佳爲1/3〜1/2之範圍內）者爲佳。在本發明 中，單位多色花樣圖形或多重多色花樣圖形之大小係意味 著有效噴霧圖形之大小。 藉由以千鳥格狀配置各噴霧塗裝機50a〜50e所獲得之 花樣圖形之具體例揭示於第3圖。將各噴霧塗裝機以橫向 間距250〜3 00mm、縱向間距約150mm而呈千鳥狀進行配 置，截至被塗物面爲止之距離設成約5 00mm，所獲得之各 單位花樣圖形係形成如第3圖所示，其係對於帶狀被塗物 之移動方向、藉由位於前列之噴霧塗裝機50a、50c、 5〇e，而在單位花樣圖形上藉由噴霧塗裝機50b、50d而形 成單位花樣圖形爲呈重合之多重多色圖形。 -1 2- 1220868I. The paint supply device 2 supplies paints of colors A and B! Stored in the tanks to the four paint discharge nozzles of each of the spray coating machines 50a to 50e via a pump. The paint supply device 2 adjusts the final discharge amount from the nozzles of each of the A color and: 3 color paints to ensure the reproducibility of the pattern by changing the discharge amount of each coating color t, and has the adjustment shown in the coating 1220868. V. Description of the invention (8) The method of paint flow rate in the material supply path is disclosed in Figure 2. In FIG. 2, for the sake of simplicity, only two of the spray nozzles of each of the spray coating machines 50a to 50e are used. In Fig. 2, the A-color paint filled into the A-color paint tank is circulated through the three-way valve by the dosing pump, and the B-color paint filled into the B-color paint tank is also circulated through the three-way by the dosing pump. The valve circulates. These paints are respectively transferred to the loop pipe switching valve by a three-way valve with a flow path change, and are then supplied to each paint discharge nozzle of each spray gun. The change of the flow path of each two-way valve and the flow rate from the fixed displacement pump are controlled by a control unit (not shown). A gear pump is used in each of the fixed displacement pumps, and is driven by an inverter servo motor (not shown) that can be controlled by a resin. With this gear pump, the paint flow rate of each three-way valve is adjusted, thereby ensuring the adjustment of the final discharge amount from the discharge nozzles of various paints. Thereby, the variation of the discharge amount in each discharge nozzle is used to control the color change, etc., and the pattern discoverability can be adjusted. In the present invention, as shown in Fig. 1, a cleaning device 4 for automatically cleaning each paint supply path and each spray coating machine may be provided. In order to prevent the spraying of paint due to the contamination of the spray gun body caused by continuous atomization coating, it is better to automatically clean each paint supply path and each spray coating machine before the spray gun demarcation limit time. The cleaning device 4 is to send the cleaning solvent pressured by the cleaning solvent pressure pump 10 to the cleaning nozzle 13 through the cleaning solvent liquid nozzle to remove the contamination of the spray gun body and use the flow The gas is conveyed and dried through washing -10- 1220868 V. Description of the invention (9) Air chamber 11 for solvent pipe cleaning or air chamber 12 for atomization of paint pipe. The cleaning system in the supply path and the nozzle is shown in Figure 2. 'The cleaning solvent filled in the cleaning solvent tank is sent to the loop switching valve by the pressure feed pump, and is supplied to each The paint spray nozzles of the spray gun are cleaned, and moreover, the air for flow is supplied to each of the loop switching valves and the paint spray nozzles and dried. The liquid or air sent by the pressure pump is controlled by a control unit (not shown). The coating equipment of the present invention constituted as described above is not to reorganize the existing coating production line on existing belt-shaped objects to be coated or moved at a speed of 10 m / min or more, It is better to add each device freely or to install each device under exclusion. This eliminates the need to disassemble the equipment even in coating production lines such as coil coatings. In the method of the present invention, the above-mentioned coating equipment is used for a belt-shaped coating object that moves two or more colors of paint at a speed of 10 nm / min or more, preferably 20 to 120 m / min, and Perform spray coating. The coated coating film is formed by sintering and hardening in a drying furnace to form a colorful pattern coating film. Using the spray coating machine described above, the paint having two different paint colors is discharged from at least two paint discharge nozzles of a spray gun having two or more paint discharge nozzles. Thereby, a multi-color spray pattern in which the coating material discharged from each nozzle is mixed is formed. The degree of mixing of the paint in the spray pattern is such that it can be determined according to the intended pattern within a range where a colorful pattern coating film can be formed, and is performed by appropriately adjusting the coating conditions such as paint viscosity and paint discharge amount, etc. Adjustment. The viscosity of the coating when coating is usually based on the photocoupler # 4 -11-1220868. V. Description of the invention (10) (20 ° C) It is generally better to be within the range of 10 to 40 seconds. . The atomizing air pressure of the coating is usually in the range of 0.5 to 10 kgf / cm2, and the graphic air pressure is usually in the range of 0.1 to 4 kgf / cm2. The shape of the unit multicolor spray pattern obtained by the coating machine formed as described above may be a true circle shape or an oval shape, and is not particularly limited. In the present invention, a plurality of unit multi-color spray patterns formed by a plurality of spray coating machines are combined to form a multi-colored multi-pattern pattern superimposed by adjacent unit multi-color pattern patterns. The degree of overlap of adjacent unit multi-colored pattern graphics is such that between the colorful pattern graphics of each unit, the line with the greatest degree of overlap is usually 1/6 ~ 1/2, preferably 1/3 ~ 1 / Within the range of 2 (in the case where the colorful pattern of each unit is a circle, it is preferably within the range of 1/6 to 1/2, preferably 1/3 to 1/2 of its diameter range). In the present invention, the size of the unit multi-color pattern or the multi-color pattern means the size of the effective spray pattern. A specific example of the pattern pattern obtained by disposing each of the spray coating machines 50a to 50e in a houndstooth pattern is shown in Fig. 3. Each spray coating machine is arranged in the shape of a thousand birds with a horizontal pitch of 250 to 300 mm and a vertical pitch of about 150 mm. The distance up to the surface of the object to be coated is set to about 5000 mm. The pattern of each unit pattern obtained is as shown in the figure. As shown in Figure 3, it is the spray coating machines 50a, 50c, and 50e located at the forefront of the movement direction of the belt-like coating object, and the spray pattern coating machines 50b and 50d on the unit pattern pattern. The unit pattern pattern is a multi-color pattern that is superimposed. -1 2- 1220868
五、發明說明（11 ) 此外，於被塗物上形成多彩花樣之際，如第3圖所 示，亦可使各噴霧塗裝機於帶狀被塗物之寬度方向上朝箭 頭方向進行短距離之往復運動，而使多重多色花樣圖形於 被塗物之寬度方向進行往復運動。藉由短距離之往復運動 而可提升花樣之均一性。 在本發明中，噴霧塗裝而形成多彩花樣之際，所形成 之多重多色花樣圖形係爲位於持續地被覆被塗物之整體寬 度的位置。而在將塗裝機進行短距離之往復運動時，多重 多色花樣圖形係在持續地被覆被塗物之整體寬度之位置的 範圍內進行短距離之往復運動。 形成在被塗物上之多彩花樣圖形層之塗膜厚雖並未有 特別之限定，不過，通常卻因以乾燥膜厚在2〜30 // m、 較佳爲1 〇〜1 5 // m之範圍內，所獲得之花樣塗膜之外觀、 防止燒烤時之塗膜發泡等之點來看者係較適當。 在本發明方法中，作爲帶狀被塗物，係可列舉有例如 金屬板、於該金屬板上之底漆塗膜、更因應需要而在該底 漆塗膜上形成著色基底塗膜之塗裝金屬板、塑膠板等，在 其中，較佳係可適用於金屬板、塗裝金屬板。 作爲上述金屬板，係可列舉有冷軋鋼板、鋅系電鍍鋼 板、鍍錫鋼板、鋁板等，在其中亦是較佳爲適用於鋅系電 鍍鋼板。而作爲鋅系電鍍鋼板，係可列舉有熔融鋅電鍍鋼 板、電氣鋅電鍍鋼板、鐵、鋅合金電鍍鋼板、鎳—鋅合金 電鍍鋼板、鋁-鋅合金電鍍鋼板（例如爲「GAL-BARIUM -13- 1220868 五、發明說明（12) (鋁鋅合金電鍍鋼板）」、「GAL-FUN (鋅鋁合金電鍍鋼 板）」等商品名之電鍍鋼板）等。此外，上述金屬板係爲 了提昇附著性或耐蝕性，亦可在表面上實施磷酸鋅處理、 鉻酸處理等轉化處理。 當被塗物爲塗裝金屬板的情況下，作爲亦可形成在上 述金屬板上之底漆塗膜，係以藉由聚酯系底漆或是環氧樹 脂系底漆所形成之塗膜爲佳，該膜厚雖並未特別限定，不 過通常係以2〜1 5 // m程度者爲佳。作爲著色基底塗膜之 中塗塗膜、作爲上塗基底塗膜，在已知之塗料區分中係可 爲由中塗塗料、上塗基底塗料所形成之塗膜。作爲中塗塗 料、上塗基底塗料均係可列舉有聚酯樹脂系、酸醇樹脂 系、丙烯酸樹脂系、聚酯矽樹脂系等塗料。該膜厚雖並未 特別限定，不過通常係以2〜2 0 // m程度者爲佳。 上述底漆塗膜、著色基底塗膜係以藉由滾筒塗覆部塗 裝所形成者爲佳。亦可在該塗裝後分別進行燒結、乾燥， 或是亦可在上述底漆塗膜或是著色基底塗膜上，以受潮狀 態來形成多彩花樣塗膜。特別是在著色基底塗膜上形成多 彩花樣塗膜的情況下，因亦可縮短程序而以受潮狀態下所 塗裝者爲佳，亦可因應需要而在著色基底塗裝後進行預熱。 多彩花樣塗膜之燒結條件雖並未有特別之限制，但在 連續塗裝的情況下，通常以被塗物之最高到達溫度形成爲 1 6 0〜2 5 0 C之條件下進行3 0秒〜2分鐘期間者爲較適當。 【發明之效果】 -14- 1220868 五、發明說明（13) 藉由本發明，藉由在實際塗裝生產線中之各塗色之吐 出量變動，而可解決因花樣之再現性或空氣霧化塗裝所造 成粉末飛散之問題，對於高速移動之帶狀被塗物而言，爲 可藉由噴霧塗裝來形成以均勻狀態下形成在美觀性極爲優 越之多彩花樣塗膜。 【圖式簡單說明】 第1圖所示係本發明一實施例之多彩花樣塗裝設備之 槪要圖。 第2圖所示係用於本發明之塗料供給方式及洗淨系統 之槪念圖。 第3圖所示係在本發明之塗裝設備中，各噴霧塗裝機 之配置與所得之花樣圖形之槪念圖。 符號說明z 1 :塗裝裝置 2 :塗料供給裝置 3 :局部排氣裝置 4 :洗淨裝置 5:塗裝裝置自送軌道 6 :帶狀被塗物 7 :滾筒塗覆部 8 :可撓性軟管 9 a〜9 c :管 1 〇 :洗淨溶媒壓送泵 -15- 1220868 五、發明說明（14 ) 1 1 :洗淨溶媒配管洗淨用空氣室 1 2 :塗料配管霧化用空氣室 1 3 :洗淨噴嘴 50a〜50e :噴霧塗裝機 5 1 :塗裝機支撐體 -16-V. Description of the invention (11) In addition, when colorful patterns are formed on the object to be coated, as shown in FIG. 3, each spray coating machine can also be made short in the direction of the arrow in the width direction of the belt-like object to be coated. The reciprocating movement of the distance causes the multi-color pattern to reciprocate in the width direction of the coated object. The uniformity of the pattern can be improved by short-distance reciprocating motion. In the present invention, when the multi-color pattern is formed by spray coating, the multiple multi-color pattern pattern formed is located at the position where the entire width of the coating is continuously covered. When the coating machine is reciprocated for a short distance, the multi-color pattern is repeatedly reciprocated for a short distance within a range that continuously covers the entire width of the coating object. Although the coating film thickness of the multi-color pattern layer formed on the coated object is not particularly limited, it is usually a dry film thickness of 2 ~ 30 // m, preferably 1 〇 ~ 1 5 // Within the range of m, the appearance of the obtained pattern coating film and the prevention of foaming of the coating film during grilling are more appropriate. In the method of the present invention, as the band-shaped coating object, for example, a coating of a metal plate, a primer coating film on the metal plate, and a colored base coating film formed on the primer coating film as required. Metal plates, plastic plates, and the like are preferred. Among them, metal plates and coated metal plates are preferred. Examples of the metal plate include cold-rolled steel plates, zinc-based plated steel plates, tin-plated steel plates, and aluminum plates. Among them, zinc-plated steel plates are also suitable. Examples of the zinc-based electroplated steel sheet include molten zinc electroplated steel sheet, electric zinc electroplated steel sheet, iron, zinc alloy electroplated steel sheet, nickel-zinc alloy electroplated steel sheet, and aluminum-zinc alloy electroplated steel sheet (for example, "GAL-BARIUM -13" -1220868 V. Description of the invention (12) (galvanized steel plate of aluminum-zinc alloy plating), "GAL-FUN (galvanized steel plate of zinc-aluminum alloy)", etc.). In addition, in order to improve adhesion or corrosion resistance, the metal plate may be subjected to conversion treatment such as zinc phosphate treatment and chromic acid treatment on the surface. When the object to be coated is a coated metal plate, as a primer coating film that can also be formed on the metal plate, it is a coating film formed by a polyester-based primer or an epoxy-based primer. Although the film thickness is not particularly limited, it is usually preferably about 2 to 1 5 // m. The middle coating film as the colored base coating film and the top coating film may be coating films formed of the middle coating paint and the top coating paint in a known coating division. Examples of the middle coat paint and the base coat paint include polyester resin-based, acid-alcohol resin-based, acrylic resin-based, and polyester silicone resin-based coatings. Although the film thickness is not particularly limited, it is usually preferably about 2 to 2 0 // m. The primer coating film and the colored base coating film are preferably those formed by coating with a roller coating portion. It can also be sintered and dried separately after the coating, or it can be formed on the above-mentioned primer coating film or colored base coating film in a damp state to form a colorful pattern coating film. In particular, when a multi-color pattern coating film is formed on a colored base coating film, it is also preferable to shorten the procedure and apply it in a damp state, or to preheat the colored base coating after the coating if necessary. Although there are no particular restrictions on the sintering conditions of the colorful pattern coating film, in the case of continuous coating, it is usually performed at the maximum reached temperature of the coated object to be 16 0 to 2 5 0 C for 30 seconds. A period of ~ 2 minutes is more appropriate. [Effects of the invention] -14-1220868 V. Explanation of the invention (13) With the present invention, the variation of the discharge amount of each color in the actual coating production line can be used to solve the problem of reproducibility of patterns or air atomization. The problem of powder scattering caused by installation is that for strip-shaped objects to be moved at high speed, spray coating can be used to form a colorful pattern coating film with excellent appearance in a uniform state. [Brief description of the drawings] Figure 1 is a schematic diagram of a colorful pattern coating equipment according to an embodiment of the present invention. Figure 2 is a schematic diagram of a coating supply method and a cleaning system used in the present invention. Fig. 3 is a schematic view of the configuration of each spray coating machine and the pattern pattern obtained in the coating equipment of the present invention. DESCRIPTION OF SYMBOLS z 1: Coating device 2: Coating supply device 3: Local exhaust device 4: Cleaning device 5: Coating device self-contained rail 6: Band-shaped coating object 7: Roller coating part 8: Flexible Hose 9 a ~ 9 c: Tube 1 〇: Washing medium pressure pump-15-1220868 V. Description of the invention (14) 1 1: Washing medium pipe cleaning air chamber 1 2: Coating pipe atomizing air Room 1 3: Cleaning nozzles 50a to 50e: Spray coating machine 5 1: Coating machine support body -16-