JP2008149299A - Color coating apparatus for nail - Google Patents

Color coating apparatus for nail Download PDF

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JP2008149299A
JP2008149299A JP2006342881A JP2006342881A JP2008149299A JP 2008149299 A JP2008149299 A JP 2008149299A JP 2006342881 A JP2006342881 A JP 2006342881A JP 2006342881 A JP2006342881 A JP 2006342881A JP 2008149299 A JP2008149299 A JP 2008149299A
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tank
coating
nail
organic solvent
dip coating
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JP4972392B2 (en
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Takahiro Hazama
貴博 狭間
Toshio Horimoto
利雄 堀本
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Amatei Inc
アマテイ株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a color coating apparatus for nail which is capable of forming a colored coating film having uniform thickness and free from the density irregularity on the surface of the nail, prompting the drying rate of the coating film to improve treatment efficiency and space efficiency to reduce treating cost and suppressing the soiling of a transporting route or adverse effect on the external environment. <P>SOLUTION: The color coating apparatus for the nail is provided with: an upper part opened dip coating vessel 1 housing a color coating material P containing a volatile organic solvent; an oil bath 3; a condensing vessel 3 arranged around the dip coating vessel 1 and having an opened upper part; cooling medium pipe lines 5A, 5B in the condensing vessel 3; a gear engaging part 13 for allowing a rope body 6 holding uncoated nails N ... to get under the colored coating material P in the dip coating vessel 1 from the upper side and to take out continuously; and a solvent recovery pipe line L4 for recovering the liquid of the organic solvent S condensed in the condensing vessel 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、着色塗装釘の製造に用いる塗装装置、特に連続的浸漬塗装による釘の着色塗装装置に関する。   The present invention relates to a coating apparatus used for manufacturing colored painted nails, and more particularly to a colored coating apparatus for nails by continuous dip coating.

近年、建築に使用する太め鉄丸釘や細め鉄丸釘(JIS A5508)として、建物竣工時に性能保証機関等が指定された釘を適正に使用しているか否かの確認検査を行う際、その釘サイズの識別を容易にするために、釘頭部に業界統一基準としてサイズ毎に定められた着色を施した着色塗装釘が多用されている。また、釘に合成樹脂の皮膜を設けた場合、打ち込みに要する力が低減されると共に、打込み材に対する保持力も向上する上、未使用状態での耐蝕(錆止め)効果もあるから、前記の着色塗装釘には一般的に釘全体の表面に着色塗装したものが用いられている。   In recent years, when conducting inspections to check whether or not nails designated by the performance assurance organization, etc. are properly used at the time of building completion, such as thick iron round nails and thin iron round nails (JIS A5508) used in construction, In order to facilitate the identification of the nail size, a colored painted nail in which the nail head is colored according to the size as an industry standard is frequently used. In addition, when a synthetic resin film is provided on the nail, the force required for driving is reduced, the holding power against the driving material is improved, and there is also an anti-corrosion (rust prevention) effect in the unused state. In general, the nail is colored and painted on the entire surface of the nail.

このような釘の着色塗装手段としては種々の方式が知られるが、特に塗装効率の面からは、2本の針金に溶接によって未塗装釘を数mm間隔で並列に保持させたものを連続的に移動させつつ、着色塗料中に潜らせて引き上げることによって釘表面に着色塗膜を形成する、連続的浸漬塗装方式が好適である。しかして、釘用の着色塗料は一般的に着色剤の染料や顔料と結合剤樹脂と溶剤とから構成されるが、従来の連続的浸漬塗装においては、溶剤の蒸発を抑えて且つ浸漬塗装後の乾燥を速めるため、溶剤としてメチレンクロライド(沸点39.8℃)の如き揮発性の高い有機溶剤を用い、常温での浸漬塗装と非加熱乾燥による塗膜形成を行うのが主流になっている。   There are various known methods for coloring and painting such nails, but from the viewpoint of painting efficiency, in particular, a series of two uncoated nails held in parallel at intervals of several mm by welding to two wires. A continuous dip coating method in which a colored coating film is formed on the surface of the nail by being submerged and pulled up in the colored paint while being moved to is suitable. Colored paints for nails are generally composed of colorant dyes and pigments, binder resin, and solvent. In conventional continuous dip coating, the evaporation of the solvent is suppressed and after dip coating is performed. In order to speed up the drying of the coating, the use of a highly volatile organic solvent such as methylene chloride (boiling point 39.8 ° C.) as the solvent, and dip coating at room temperature and coating formation by non-heat drying are the mainstream. .

ところが、上記従来の連続的浸漬塗装では、釘表面に着色塗料が過剰に付着して部位による塗膜厚みの差を生じ易く、しかも斑状の濃淡ムラが顕著に生じることから、得られる着色塗装釘の外観体裁が悪い上、塗膜乾燥に時間がかかるために浸漬塗装後の走行行程を長くとる必要があり、それだけ処理能率及び空間効率が悪くなり、また着色塗料が付着過多になり易く、塗料消費の増大で処理コストが高くつくと共に、塗装後の釘からの液垂れによる移送経路の汚れも激しく、清掃に手間がかかるという難点もあった。更に、着色塗料に含まれるメチレンクロライドの如き高揮発性の溶剤成分は常温下でも蒸発するから、作業環境面より浸漬塗装部の空気を外部へ強制排気するのが普通であるが、これによって溶剤成分の大気中への逸出が多くなり、材料コストが嵩むと共に外部環境への悪影響も懸念される。   However, in the above-described conventional continuous dip coating, the colored paint nail is obtained because the colored paint adheres excessively to the surface of the nail and tends to cause a difference in the thickness of the coating film depending on the site, and the uneven shading unevenness is prominent. In addition to the poor appearance of the coating, it takes a long time to dry the coating film, so it is necessary to take a long traveling stroke after dip coating, and the processing efficiency and space efficiency are deteriorated. The processing cost is increased due to the increase in consumption, and the transfer path due to dripping from the nail after painting is severely contaminated, which necessitates troublesome cleaning. Furthermore, since highly volatile solvent components such as methylene chloride contained in the colored paint evaporate even at room temperature, it is common to forcibly exhaust the air in the dip coating area to the outside from the viewpoint of the work environment. The escape of the components to the atmosphere increases, and material costs increase and there are concerns about adverse effects on the external environment.

本発明は、上述の情況に鑑み、釘の着色塗装装置として、釘表面に均一な厚みで濃淡むらの少ない着色塗膜を形成できる上、塗膜乾燥を速めて処理効率及び空間効率を向上でき、且つ着色塗料の適正な付着と溶剤成分の大気中への逸出防止によって処理コストが低減すると共に、液垂れによる移送経路の汚れや溶剤成分の放出による外部環境への悪影響を抑え得るものを提供することを目的としている。   In view of the above circumstances, the present invention can form a colored coating film with uniform thickness and less unevenness on the surface of the nail as a nail coloring coating apparatus, and can accelerate the drying of the coating film and improve the processing efficiency and space efficiency. In addition, the treatment cost is reduced by proper adhesion of the colored paint and prevention of escape of the solvent component to the atmosphere, and it can suppress adverse effects on the external environment due to contamination of the transfer path due to dripping and release of the solvent component. It is intended to provide.

上記目的を達成するために、請求項1の発明に係る釘の着色塗装装置は、図面の参照符号を付して示せば、揮発性有機溶剤Sを含む着色塗料Pを収容する上方開放型の浸漬塗布槽1と、該浸漬塗布槽1の加温手段(油浴槽3)と、該浸漬塗布槽1の周囲に配置して上部が開放した凝縮槽2と、該凝縮槽2内の冷却手段(冷媒配管5A,5B、冷凍機8)と、未塗装釘N…を所定間隔で保持した索体6を上方から連続的に浸漬塗布槽1内の着色塗料P中に潜らせて引き出す釘送り手段(モータM、ギヤ噛合部13)と、凝縮槽2内で凝縮した有機溶剤Sの液を回収する溶剤回収手段(溶剤回収管路L4)とを具備してなる構成としている。   In order to achieve the above object, the nail coloring and painting apparatus according to the first aspect of the present invention is an upward-opening type containing a colored paint P containing a volatile organic solvent S, if indicated by the reference numerals in the drawings. Immersion tank 1, heating means (oil bath 3) of the dip coating tank 1, condensation tank 2 disposed around the dip coating tank 1 and opened at the top, and cooling means in the condensation tank 2 (Refrigerant pipes 5A, 5B, refrigerator 8) and a nail feed that draws the cable body 6 holding unpainted nails N ... at predetermined intervals continuously while being hidden in the colored paint P in the dip coating tank 1 from above. Means (motor M, gear meshing portion 13) and solvent recovery means (solvent recovery line L4) for recovering the organic solvent S condensed in the condensing tank 2 are provided.

請求項2の発明は、上記請求項1の釘の着色塗装装置において、凝縮槽2から回収された有機溶剤Sを浸漬塗布槽1内へ戻す溶剤返送手段(管路L1,L3,L4,L5、ポンプP1,P2)を具備するものとしている。   The invention of claim 2 is the nail coloring and coating apparatus of claim 1, wherein the solvent returning means (pipe lines L1, L3, L4, L5) for returning the organic solvent S recovered from the condensation tank 2 into the dip coating tank 1 is provided. , Pumps P1, P2).

請求項3の発明は、上記請求項1又は2の釘の着色塗装装置において、浸漬塗布槽1内の着色塗料Pを循環させる塗料循環手段(管路L1〜L3,ポンプP1)を具備するものとしている。   According to a third aspect of the present invention, in the nail color coating apparatus according to the first or second aspect of the present invention, the nail color coating apparatus comprises paint circulation means (pipe lines L1 to L3, pump P1) for circulating the colored paint P in the dip coating tank 1. It is said.

請求項4の発明は、上記請求項1〜3の何れかの釘の着色塗装装置において、冷却手段が、凝縮槽2内の冷媒配管4A,4B内を通る冷媒との熱交換によって有機溶剤Sガスを凝縮させるものとしている。   According to a fourth aspect of the present invention, in the nail coloring and coating apparatus according to any one of the first to third aspects, the cooling means is an organic solvent S by heat exchange with the refrigerant passing through the refrigerant pipes 4A and 4B in the condensation tank 2. It is supposed to condense the gas.

請求項5の発明は、上記請求項1〜4の何れかの釘の着色塗装装置において、凝縮槽2から回収された有機溶剤S中の混入水Wを比重差によって分離する水分離槽7を具備するものとしている。   According to a fifth aspect of the present invention, in the nail coloring coating apparatus according to any one of the first to fourth aspects, the water separation tank 7 that separates the mixed water W in the organic solvent S recovered from the condensation tank 2 by a specific gravity difference. It is supposed to have.

請求項6の発明は、上記請求項1〜5の何れかの釘の着色塗装装置において、揮発性有機溶剤Sがメチレンクロライドである構成としている。   The invention of claim 6 is the nail coloring coating apparatus according to any one of claims 1 to 5, wherein the volatile organic solvent S is methylene chloride.

請求項1の釘の着色塗装装置によれば、浸漬塗布槽に収容された着色塗料から蒸発した揮発性有機溶剤のミストを含むガスが周囲の凝縮槽内に入り込むと、冷却手段によって冷却されて凝縮・液化し、これに伴う体積減少によって該凝縮槽内の圧力が低下し、その開放した上部で減圧による吸引作用を生じると共に、凝縮槽内の液化した有機溶剤が溶剤回収手段によって回収されるから、浸漬塗布槽から発生する有機溶剤のミスト含有ガスは上方へ向かわずに専ら周辺方向へ移動して凝縮槽へ流入することになり、この流れ状態は着色塗料の昇温や溶剤配合比の増大によって有機溶剤の蒸発量が増加しても安定的に持続する。従って、索体に保持された各釘が浸漬塗装槽の着色塗料中を潜り抜けて上方へ引き上げられる行程において、釘表面の塗料皮膜に対する有機溶剤ミストの付着が極めて少なくなり、該有機溶剤ミストの付着に起因した斑状の濃淡ムラの発生が抑えられる。しかも、浸漬塗布槽の加温手段で着色塗料の温度を上げることにより、該着色塗料の粘度が低下するから、釘表面への過剰な塗料付着を生じず、均一な厚みの着色塗膜を形成できるため、得られる着色塗装釘は非常に外観体裁のよいものとなる。   According to the nail coloring and coating apparatus of claim 1, when the gas containing the mist of the volatile organic solvent evaporated from the colored paint accommodated in the dip coating tank enters the surrounding condensing tank, it is cooled by the cooling means. Condensation and liquefaction, the pressure in the condensing tank decreases due to the volume reduction accompanying this, and a suction action due to decompression occurs at the open top, and the liquefied organic solvent in the condensing tank is recovered by the solvent recovery means Therefore, the mist-containing gas of the organic solvent generated from the dip coating tank does not move upward but moves to the peripheral direction and flows into the condensing tank. Even if the evaporation amount of the organic solvent increases due to the increase, the organic solvent can be stably maintained. Therefore, in the process in which each nail held by the cable body passes through the colored paint in the dip coating tank and is pulled upward, the adhesion of the organic solvent mist to the paint film on the surface of the nail is extremely reduced. Occurrence of patchy unevenness due to adhesion is suppressed. In addition, by increasing the temperature of the colored paint with the heating means of the dip coating tank, the viscosity of the colored paint is reduced, so that no excessive paint adheres to the nail surface and a colored coating film with a uniform thickness is formed. Therefore, the colored painted nail obtained has a very good appearance.

また、この着色塗装装置では、上述のように着色塗料から蒸発する揮発性有機溶剤の回収と、着色塗料の過剰付着の防止による消費量の削減とで、処理コストが大幅に低減される上、有機溶剤の揮散による外部環境への悪影響も防止できる。更に、着色塗料の加温により、形成塗膜に加えて浸漬した釘自体も昇温し、それだけ塗膜の乾燥が速まるため、浸漬塗装後の走行行程を短く設定でき、もって処理能率及び空間効率を高めることが可能であり、加えて塗装後の釘からの液垂れも生じにくくなるから、移送経路の汚れが少なくなって清掃の手間を大幅に軽減できる。   Further, in this colored coating apparatus, the processing cost is greatly reduced by the recovery of the volatile organic solvent that evaporates from the colored paint as described above, and the reduction of consumption by preventing excessive adhesion of the colored paint. The adverse effects on the external environment due to the volatilization of the organic solvent can also be prevented. Furthermore, by heating the colored paint, the soaked nail itself is heated in addition to the formed paint film, and the paint film can be dried faster. In addition, liquid dripping from the nail after painting is less likely to occur, so that the dirt on the transfer path is reduced and the labor of cleaning can be greatly reduced.

請求項2の発明によれば、凝縮槽から回収された有機溶剤を溶剤返送手段によって浸漬塗布槽内へ戻せるから、回収溶剤を用いて別途に塗料を調製する手間が省ける。   According to the second aspect of the invention, the organic solvent recovered from the condensing tank can be returned to the dip coating tank by the solvent returning means, so that the trouble of separately preparing the paint using the recovered solvent can be saved.

請求項3の発明によれば、浸漬塗布槽内の着色塗料を塗料循環手段によって循環させることにより、該浸漬塗布槽内の着色塗料全体の性状を偏りなく均一に維持できる。   According to the third aspect of the present invention, the colored paint in the dip coating tank is circulated by the paint circulation means, so that the properties of the entire colored paint in the dip coating tank can be uniformly maintained.

請求項4の発明によれば、凝縮槽内の冷却手段が冷媒配管内を通る冷媒との熱交換によって有機溶剤ガスを凝縮させるものであるから、有機溶媒の種類による凝縮温度の違いや浸漬塗装の稼働条件に対応した冷却制御を容易に且つ広範囲に行える。   According to the invention of claim 4, since the cooling means in the condensing tank condenses the organic solvent gas by heat exchange with the refrigerant passing through the refrigerant pipe, the difference in the condensation temperature depending on the type of organic solvent or immersion coating Cooling control corresponding to the operating conditions can be easily and widely performed.

請求項5の発明によれば、凝縮槽内で凝縮・液化した有機溶剤中には空気中の水分の凝縮による混入水が存在するが、この混入水を水分離槽において比重差で分離できるから、作業空間の湿度の高低に影響されずに高純度の回収溶媒を確保できる。   According to the invention of claim 5, the organic solvent condensed and liquefied in the condensing tank contains mixed water due to condensation of moisture in the air, but this mixed water can be separated by the specific gravity difference in the water separation tank. It is possible to secure a high purity recovery solvent without being affected by the humidity of the working space.

請求項6の発明によれば、揮発性有機溶剤が揮発性の高いメチレンクロライドであるから、少しの加温によって着色塗料の温度を溶剤沸点より僅かに低い温度に設定でき、それだけ少ない熱エネルギー消費で溶剤揮発による塗膜乾燥性を高めることができる。   According to the invention of claim 6, since the volatile organic solvent is a highly volatile methylene chloride, the temperature of the colored paint can be set to a temperature slightly lower than the boiling point of the solvent by a little heating, and the heat energy consumption is reduced accordingly. The coating film drying property by solvent volatilization can be improved.

以下に、本発明に係る釘の着色塗装装置の実施形態について、図面を参照して具体的に説明する。図1は着色塗装装置全体の概略構成、図2は塗装機本体、図3は塗装機本体の要部の横断面、図4は同要部の縦断面、をそれぞれ示す。   Hereinafter, embodiments of a coloring and painting apparatus for nails according to the present invention will be specifically described with reference to the drawings. FIG. 1 shows a schematic configuration of the entire color coating apparatus, FIG. 2 shows a coating machine main body, FIG. 3 shows a transverse section of the main part of the coating machine main body, and FIG. 4 shows a longitudinal section of the main part.

図1において、1は上方に開放した角形の浸漬塗布槽、2は該浸漬塗布槽1の上部側周囲を矩形環状に取囲む凝縮槽、3は該浸漬塗布槽1の下部を抱持する油浴槽、4は浸漬塗布槽1の前部側と凝縮槽2との間に位置する溢流槽であり、これら槽1〜4が溶接一体化した状態で縦ボックス型(図2参照)の塗装機本体10内に設備されている。そして、凝縮槽2内には、その前部側の幅広空間2aにコイル状の冷媒配管5Aが配置すると共に、同凝縮槽2の同左右両側及び後部側にわたる幅狭空間2bに三段折返し直管状の冷媒配管5Bが配置している。6は釘搬送用の索体であり、2本の針金6a,6aに未塗装の釘N…を釘頭を上側とする傾斜状態で数mm間隔に密に溶接固着している。7は水分離槽、8は冷凍機であり、共に塗装機本体10とは別体に設備されている。   In FIG. 1, 1 is a rectangular dip coating tank opened upward, 2 is a condensing tank that surrounds the periphery of the upper side of the dip coating tank 1 in a rectangular ring shape, and 3 is an oil that holds the lower part of the dip coating tank 1. The bathtub 4 is an overflow tank located between the front side of the dip coating tank 1 and the condensation tank 2, and is coated in a vertical box type (see FIG. 2) with these tanks 1 to 4 being welded and integrated. It is installed in the machine body 10. In the condensing tank 2, a coil-shaped refrigerant pipe 5A is disposed in the wide space 2a on the front side, and the three-fold folding is returned to the narrow space 2b on the left and right sides and the rear side of the condensing tank 2. A tubular refrigerant pipe 5B is arranged. Reference numeral 6 denotes a nail carrying cord, which is firmly fixed to two wires 6a, 6a with unpainted nails N... 7 is a water separation tank and 8 is a refrigerator, both of which are installed separately from the coating machine body 10.

浸漬塗布槽1と凝縮槽2及び溢流槽4はいずれも全体が上方に開放しているが、左右両側及び後側において浸漬塗布槽1と凝縮槽2とを隔てる平面視コ字形(図3参照)の隔壁11aに対し、浸漬塗布槽1と溢流槽4とを隔てる中間隔壁11bの上縁が低く設定されており、これによって浸漬塗布槽1内へ供給される着色塗料Pの過剰分が中間隔壁11bの上縁から溢流槽4へ流出するから、浸漬塗布槽1の満杯での液位は常に中間隔壁11bの上端高さに維持される。また、凝縮槽2の前側の広幅空間2aと溢流槽4とを隔てる前部隔壁11cは、中間隔壁11bよりも更に上縁が低く設定されている。   The dip coating tank 1, the condensing tank 2 and the overflow tank 4 are all open upward, but in a plan view U shape separating the dip coating tank 1 and the condensing tank 2 on both the left and right sides and the rear side (FIG. 3). The upper edge of the intermediate partition wall 11b separating the dip coating tank 1 and the overflow tank 4 is set to be lower than the partition wall 11a of the reference), and the excess amount of the colored paint P supplied into the dip coating tank 1 is thereby set. Flows out from the upper edge of the intermediate partition wall 11b to the overflow tank 4, so that the liquid level when the dip coating tank 1 is full is always maintained at the upper end height of the intermediate partition wall 11b. The front partition 11c that separates the wide space 2a on the front side of the condensing tank 2 and the overflow tank 4 is set to have a lower upper edge than the intermediate partition 11b.

しかして、浸漬塗布槽1の底部には循環入口管路L1及び循環出口管路L2が接続すると共に、凝縮槽2の底部にも循環出口管路L3が接続し、両循環出口管路L2,L3は合流してポンプP1を介して循環入口管路L1に連結しており、ポンプP1の駆動により、随時に浸漬塗布槽1及び凝縮槽2内の液を導出して再び浸漬塗布槽1内へ戻す循環操作を行えるようになっている。   Thus, the circulation inlet pipe L1 and the circulation outlet pipe L2 are connected to the bottom of the dip coating tank 1, and the circulation outlet pipe L3 is also connected to the bottom of the condensing tank 2, and both circulation outlet pipes L2, L2 are connected. L3 merges and is connected to the circulation inlet line L1 via the pump P1, and by driving the pump P1, the liquid in the dip coating tank 1 and the condensing tank 2 is led out at any time and again in the dip coating tank 1 The circulation operation to return to can be performed.

一方、凝縮槽2内に配置する冷媒配管5A,5Bには、冷凍機8からの冷媒供給管路C1から分岐した冷媒導入管路C1a,C1bと、冷凍機8への冷媒返送管路C2に合流する冷媒導出管路C2a,C2bとが、それぞれ接続されており、浸漬塗布槽1内の着色塗料Pから蒸発して当該凝縮槽2内に流入した有機溶剤Sのガスが、冷媒配管5A,5B内を流通する冷媒との熱交換で冷却・液化するように設定されている。また、凝縮槽2の底部と外部の水分離槽7との間に溶剤回収管路L4が接続し、更に水分離槽7から塗装機本体10の溢流槽4に至る溶剤返送管路L5が配管されると共に、この溶剤返送管路L5にポンプP2が介装されており、凝縮槽2内で凝縮・液化した有機溶媒Sが重力で自然に水分離槽7に送られ、該水分離槽7内で回収された有機溶剤SがポンプP2を介して溢流槽4へ返送され、この溢流槽4からポンプP1により循環出口管路L3及び循環入口管路L1を通して浸漬塗布槽1内に戻されるようになっている。   On the other hand, the refrigerant pipes 5A and 5B arranged in the condensing tank 2 are connected to refrigerant introduction pipes C1a and C1b branched from the refrigerant supply pipe C1 from the refrigerator 8 and refrigerant return pipe C2 to the refrigerator 8. The refrigerant outlet conduits C2a and C2b that join together are connected to each other, and the gas of the organic solvent S that has evaporated from the colored paint P in the dip coating tank 1 and has flowed into the condensing tank 2 flows into the refrigerant pipe 5A, It is set to be cooled and liquefied by heat exchange with the refrigerant circulating in 5B. A solvent recovery line L4 is connected between the bottom of the condensing tank 2 and the external water separation tank 7, and a solvent return line L5 extending from the water separation tank 7 to the overflow tank 4 of the coating machine body 10 is further provided. In addition to the piping, a pump P2 is interposed in the solvent return pipe L5, and the organic solvent S condensed and liquefied in the condensation tank 2 is naturally sent to the water separation tank 7 by gravity, and the water separation tank The organic solvent S recovered in the tank 7 is returned to the overflow tank 4 through the pump P2, and the overflow tank 4 is pumped into the dip coating tank 1 through the circulation outlet pipe L3 and the circulation inlet pipe L1 by the pump P1. It is supposed to be returned.

水分離槽7の内部は、下端が内底より離れた水遮断隔壁71と、それよりも上縁高さの低い溢流隔壁72とにより、溶剤回収管路L4に繋がる広い水分離室7a、両隔壁71,72間の狭い中間室7b、同じく狭い貯留室7cの3室に区画されている。そして、水分離室7aにおいて溶剤回収管路L4を通って流入する有機溶媒S中の混入水Wを比重差で上下層に分離させ、その上層側の比重の小さい水を水遮断隔壁71で遮断し、下層側の比重の大きい有機溶剤Sを底側から中間室7bへ導入し、更に該有機溶剤Sを中間室7bから貯留室7cへ溢流させ、もって貯留室7c内の水分を含まない有機溶剤Sのみが塗装機本体10の溢流槽4へ返送されることになる。   The interior of the water separation tank 7 includes a wide water separation chamber 7a connected to the solvent recovery line L4 by a water blocking partition 71 whose lower end is separated from the inner bottom and an overflow partition 72 having a lower upper edge than that. It is divided into three chambers, a narrow intermediate chamber 7b between the two partition walls 71, 72, and a narrow storage chamber 7c. Then, the mixed water W in the organic solvent S flowing in through the solvent recovery pipe L4 in the water separation chamber 7a is separated into upper and lower layers by specific gravity difference, and water having a small specific gravity on the upper layer side is blocked by the water blocking partition wall 71. Then, the organic solvent S having a large specific gravity on the lower layer side is introduced into the intermediate chamber 7b from the bottom side, and further, the organic solvent S overflows from the intermediate chamber 7b to the storage chamber 7c, and thus does not contain moisture in the storage chamber 7c. Only the organic solvent S is returned to the overflow tank 4 of the coating machine body 10.

油浴槽3内には、外部で加熱した熱媒の油Oが導入管3aより導入されるようになっている。そして、この油浴槽3に下部を抱持された浸漬塗布槽1内の着色塗料Pが、油Oからの熱伝導によって間接的に加温されることになる。   In the oil bath 3, oil O of a heat medium heated outside is introduced from the introduction pipe 3 a. Then, the colored paint P in the dip coating tank 1 whose lower part is held in the oil bath 3 is indirectly heated by heat conduction from the oil O.

なお、浸漬塗布槽1と凝縮槽2及び油浴槽3には各々の内部温度を計測する温度計Tが付設される一方、管路L1〜L5には各々開閉弁Vaが介装されている。また、冷媒供給管路C1には、水分を吸着除去するドライヤー81、色変化によって湿度を表示するサイトグラス82、電磁開閉弁Veが介装されると共に、これより分岐した冷媒導入管路C1a,C1bには、対応する冷媒導出管路C2a,C2bに付設した温度センサー83による温度計測値に基づいて自動的に流量制御を行う流量調整弁Vcが介装されている。更に、溢流槽4内にはフロート9Aが、水分離槽7の貯留室7c内にはフロート9Bが、それぞれ装填され、各々液位を指示するようになっている。   The dip coating tank 1, the condensing tank 2 and the oil tub 3 are each provided with a thermometer T for measuring the internal temperature, and the pipes L1 to L5 are each provided with an on-off valve Va. The refrigerant supply line C1 is provided with a dryer 81 that adsorbs and removes moisture, a sight glass 82 that displays humidity by color change, and an electromagnetic on-off valve Ve, and a refrigerant introduction line C1a that branches from this. A flow rate adjusting valve Vc that automatically controls the flow rate based on a temperature measurement value by a temperature sensor 83 attached to the corresponding refrigerant outlet pipes C2a and C2b is interposed in C1b. Further, a float 9A is loaded in the overflow tank 4, and a float 9B is loaded in the storage chamber 7c of the water separation tank 7, and each indicates the liquid level.

図2(A)(B)に示すように、塗装機本体10は、縦長矩形のボックスを構成しており、その内側下部に浸漬塗布槽1と凝縮槽2及び油浴3が配置すると共に、中間部には3個の浸漬ガイドローラーR1〜R3の昇降装置12が後部内壁10aに取り付けられ、また内側上部の右側には導入ガイドローラーR4、同左側には導出ガイドローラーR5が取り付けられ、更に左外側上部にモーターMを介して駆動する送り用ギヤ噛合部13と送出ガイドローラーR6が設けられている。そして、塗装機本体10の前板部10bには中間高さで正方形に大きく開いた作業用開口部14が、左右の側板部10c,10cには各々ガイドローラーR4,R5に臨んで矩形の索体通過窓15が、それぞれ開設されている。また、凝縮槽2の外周面は、図3でも示すように、塗装機本体10自体の内周面になっている。   As shown in FIGS. 2 (A) and 2 (B), the coating machine main body 10 constitutes a vertically long rectangular box, and the dip coating tank 1, the condensing tank 2 and the oil bath 3 are arranged in the lower part inside thereof, In the middle part, three lifting guide rollers R1 to R3 are attached to the rear inner wall 10a, the introduction guide roller R4 is attached to the right side of the inner upper part, and the derivation guide roller R5 is attached to the left side. A feeding gear meshing portion 13 and a delivery guide roller R6 that are driven via a motor M are provided on the upper left outer side. The front plate portion 10b of the coating machine main body 10 has a working opening 14 that is wide and opened in a square shape at an intermediate height. The left and right side plate portions 10c and 10c face the guide rollers R4 and R5, respectively. Each body passage window 15 is opened. Moreover, the outer peripheral surface of the condensing tank 2 is an inner peripheral surface of the coating machine main body 10 itself as shown in FIG.

しかして、釘搬送用の索体6は、外部から右側の索体通過窓15を通って塗装機本体10内に入り、導入ガイドローラーR4を介して下降し、右側の浸漬ガイドローラーR1の下側→中央の浸漬ガイドローラーR2の上側→左側の浸漬ガイドローラーR3の下側を順次巻き掛かって上昇し、導出ガイドローラーR5を介して左側の索体通過窓15からボックス11外へ出て、送り用ギヤ噛合部13及び送出ガイドローラーR6を経て所定の巻取部へ向かう搬送経路が設定され、送り用ギヤ噛合部13において2本の針金6a,6a間をチェーンとしてスプロケット状に噛み合うギヤの回転駆動により、所定の速度で連続走行するようになっている。   Thus, the nail transport rope 6 enters the coating machine main body 10 from the outside through the right rope passage 15 and descends via the introduction guide roller R4 and below the right immersion guide roller R1. Side → upper side of the center immersion guide roller R2 → the lower side of the left side immersion guide roller R3 is wound up in order and goes out of the box 11 from the left rope passage 15 via the guide guide roller R5, A conveying path toward a predetermined winding portion is set through the feeding gear meshing portion 13 and the sending guide roller R6, and the gear meshing in a sprocket shape with the two wires 6a and 6a as a chain in the feeding gear meshing portion 13 is set. The vehicle is continuously driven at a predetermined speed by rotational driving.

昇降装置12は、図3及び図4でも示すように、塗装機本体10の後部内壁10aに固着した取付板12aに、中央のスクリュー軸16と左右のガイド軸17,17とが垂直に保持される一方、前面側で3個の浸漬ガイドローラーR1〜R3を遊転自在に軸支した昇降板12bの裏面側に、スクリュー軸16に螺合した回転子(図示省略)を保持した昇降操作機構18と、両ガイド軸17,17に移動自在に嵌装した摺動片18,18とが取り付けられている。そして、昇降操作機構18の操作による昇降板12bの昇降に伴い、浸漬ガイドローラーR1〜R3が、図4の如く浸漬塗布槽1内に満杯に収容された着色塗料P中に浸漬した塗装位置と、該着色塗料Pの液面よりも高位の退避位置とに転換する。   As shown in FIGS. 3 and 4, the lifting device 12 has a central screw shaft 16 and left and right guide shafts 17 and 17 held vertically on a mounting plate 12 a fixed to the rear inner wall 10 a of the coating machine body 10. On the other hand, a lifting / lowering operation mechanism that holds a rotor (not shown) screwed to the screw shaft 16 on the back side of the lifting plate 12b that rotatably supports the three immersion guide rollers R1 to R3 on the front side. 18 and sliding pieces 18 and 18 movably fitted to both guide shafts 17 and 17 are attached. And with the raising / lowering of the raising / lowering board 12b by operation of the raising / lowering operating mechanism 18, the immersion guide rollers R1-R3 are immersed in the colored paint P fully accommodated in the immersion coating tank 1 as shown in FIG. Then, the color paint P changes to a retreat position higher than the liquid level.

上記構成の着色塗装装置によって未塗装釘に着色塗装を施すには、まず昇降装置12の昇降板12bを上昇位置に設定し、未塗装釘を保持した索体6を図2(A)で示す搬送経路となるようにガイドローラーR1〜R6に巻き掛けて送り用ギヤ噛合部13に通す一方、浸漬塗布槽1内に揮発性有機溶剤Sを含む所要の着色塗料Pを過剰に投入し、その余剰分を溢流槽4へ溢れ出させておき、油浴槽3に外部加熱で昇温した油Oを供給して浸漬塗布槽1中の着色塗料Pを加温すると共に、冷凍機8の稼働によって凝縮槽2内の冷媒配管5A,5Bに冷媒を流通させる。そして、該着色塗料Pが所定温度に加温され、且つ凝縮槽2内が所定の冷却温度になった状態で、ポンプP1の作動で着色塗料Pを循環させながら、昇降装置12の昇降板12bを下降させて浸漬ガイドローラーR1〜R3を巻き掛かった索体6と共に着色塗料P中に浸漬し、該索体6を送り用ギヤ噛合部13の駆動によって所定速度で連続走行させる。これにより、索体6に取り付けられていた未塗装釘N…は、当該索体6と共に順次に着色塗料P中に引き込まれ、次いで表面全体に着色塗料Pが塗膜として付着した状態で引き上げられ、その上昇過程で付着した塗膜が有機溶剤Sの揮散によって乾燥硬化し、もって着色塗装釘となる。   In order to color-paint an unpainted nail with the colored coating device having the above-described configuration, first, the lifting plate 12b of the lifting device 12 is set to the raised position, and the cable body 6 holding the unpainted nail is shown in FIG. While being wound around the guide rollers R1 to R6 so as to be a conveyance path and passing through the gear engaging portion 13 for feeding, the required colored paint P containing the volatile organic solvent S is excessively charged into the dip coating tank 1, The excess is allowed to overflow into the overflow tank 4, the oil O heated by the external heating is supplied to the oil bath 3 to heat the colored paint P in the dip coating tank 1, and the refrigerator 8 is operated. The refrigerant is circulated through the refrigerant pipes 5A and 5B in the condensing tank 2. Then, while the colored paint P is heated to a predetermined temperature and the inside of the condensing tank 2 is at a predetermined cooling temperature, the lifting plate 12b of the lifting device 12 is circulated while the colored paint P is circulated by the operation of the pump P1. Is dipped in the colored paint P together with the cable body 6 around which the immersion guide rollers R <b> 1 to R <b> 3 are wound, and the cable body 6 is continuously driven at a predetermined speed by driving the feeding gear meshing portion 13. Thus, the unpainted nail N attached to the cable body 6 is sequentially drawn into the colored paint P together with the cable body 6, and then pulled up in a state where the colored paint P adheres to the entire surface as a coating film. The coating film adhering in the ascending process is dried and cured by the volatilization of the organic solvent S, thereby forming a colored paint nail.

このような着色塗装に使用する着色塗料Pでは含まれる揮発性有機溶剤Sが常温下でも盛んに蒸発するが、上記のように油浴槽3による間接加熱で浸漬塗布槽1内の着色塗料Pを加温することにより、該有機溶剤Sの蒸発がより激しくなる。しかして、その蒸発した有機溶剤Sガスは一般的に多量のミストを伴っているため、浸漬塗布槽1の上方空間に蒸発した有機溶剤Sのガスが高濃度に立ち込めた状況では、着色塗料P中から引き上げられて上昇する各釘の表面の塗膜に該有機溶剤Sのミストが付着し、その付着部分で塗膜が溶けることにより、塗膜全体に顕著な斑状の濃淡ムラを生じることが避けられない。   In the colored paint P used for such colored coating, the volatile organic solvent S contained in the colored paint P evaporates vigorously even at room temperature. However, as described above, the colored paint P in the dip coating tank 1 is obtained by indirect heating by the oil bath 3. By heating, the evaporation of the organic solvent S becomes more intense. Since the evaporated organic solvent S gas is generally accompanied by a large amount of mist, in the situation where the gas of the organic solvent S evaporated in the upper space of the dip coating tank 1 has entered a high concentration, the colored paint P The mist of the organic solvent S adheres to the paint film on the surface of each nail that is pulled up from the inside, and the paint film melts at the adhered part, thereby causing noticeable uneven unevenness of the whole paint film. Inevitable.

しかるに、本発明の着色塗装装置によれば、浸漬塗布槽1内の着色塗料Pから蒸発した揮発性有機溶剤Sのミストを含むガスが周囲の凝縮槽2内に入り込むと、冷媒配管5A,5Bを流通する冷媒との熱交換によって冷却されて凝縮・液化するから、これに伴う体積減少によって該凝縮槽2内の圧力が低下し、その開放した上部で減圧による吸引作用を生じる。このため、浸漬塗布槽1から発生する有機溶剤Sのミスト含有ガスは、上方へ向かわず、図1及び図4の破線矢印で示すように専ら周辺方向へ移動して凝縮槽2へ流入し、その凝縮・液化による体積減少と圧力低下が継続することになる。また、凝縮槽2内で液化した有機溶剤Sは溶剤回収管路L4を通して自動的に水分離槽7へ送られるから、凝縮槽2内に有機溶剤Sの液が溜まって更なる凝縮・液化を妨げる懸念はない。   However, according to the colored coating apparatus of the present invention, when the gas containing the mist of the volatile organic solvent S evaporated from the colored paint P in the dip coating tank 1 enters the surrounding condensing tank 2, the refrigerant pipes 5A and 5B. Since the liquid is cooled and condensed and liquefied by heat exchange with the refrigerant flowing through the refrigerant, the pressure in the condensing tank 2 is reduced due to the volume reduction accompanying this, and a suction action by depressurization occurs in the opened upper part. For this reason, the mist-containing gas of the organic solvent S generated from the dip coating tank 1 does not move upward, but moves exclusively to the peripheral direction as shown by the broken line arrows in FIGS. 1 and 4 and flows into the condensation tank 2, The volume reduction and pressure drop due to the condensation and liquefaction will continue. Further, since the organic solvent S liquefied in the condensing tank 2 is automatically sent to the water separation tank 7 through the solvent recovery line L4, the liquid of the organic solvent S accumulates in the condensing tank 2 for further condensation and liquefaction. There is no concern to prevent it.

従って、この着色塗装においては、索体6に保持された各釘が着色塗料P中を潜り抜けて上方へ引き上げられる行程で、釘表面の塗膜に対する有機溶剤Sのミストの付着が極めて少なくなり、このミストの付着に起因した斑状の濃淡ムラの発生が抑えられ上、浸漬塗布槽1内の着色塗料Pの粘度及び表面張力が加温によって低下するから、釘表面への過剰な塗料付着を生じず、均一な厚みの着色塗膜を形成でき、もって非常に外観体裁のよい高品位な着色塗装釘が得られる。   Therefore, in this colored coating, the mist of the organic solvent S adheres to the coating film on the surface of the nail is extremely reduced in the process in which each nail held by the rope 6 passes through the colored paint P and is pulled upward. Further, the occurrence of uneven unevenness due to the adhesion of mist is suppressed, and the viscosity and surface tension of the colored paint P in the dip coating tank 1 are reduced by heating, so that excessive paint adhesion to the nail surface is prevented. It does not occur, and a colored coating film having a uniform thickness can be formed, so that a high-quality colored painted nail having a very good appearance can be obtained.

加えて、この着色塗装では、浸漬塗布槽1内の着色塗料Pの加温により、形成塗膜に加えて浸漬した釘自体も昇温し、それだけ塗膜の乾燥が速まることになり、浸漬塗装後の走行行程も短くて済むため、処理能率及び空間効率が高まり、また塗料粘度が低いことで塗装後の釘からの液垂れも生じにくくなるから、移送経路の汚れが少なくなって清掃の手間も大幅に軽減される。更に、着色塗料Pから蒸発する有機溶剤Sの回収・再利用と、着色塗料Pの過剰付着の防止による消費量の削減とで、塗装の処理コストが大幅に低減されると共に、有機溶剤Sの揮散による外部環境への悪影響も防止できる。   In addition, in this colored coating, heating of the colored coating P in the dip coating tank 1 raises the temperature of the nail itself soaked in addition to the formed coating film, so that the drying of the coating film is accelerated accordingly. Since the subsequent travel process is short, the processing efficiency and space efficiency are increased, and the low viscosity of the paint makes it difficult for liquid to drip from the nail after painting. Is also greatly reduced. Furthermore, the collection and reuse of the organic solvent S evaporating from the colored paint P and the reduction of consumption by preventing excessive adhesion of the colored paint P can greatly reduce the coating processing cost, and the organic solvent S The adverse effect on the external environment due to volatilization can also be prevented.

なお、本実施形態の着色塗装装置では、溢流槽4の存在で凝集槽2の前部側が浸漬塗布槽1から離れるため、該前部側をコイル状の冷媒配管5Aが配置する広幅空間2aとして冷却能力を高めると共に、溢流槽4との間の前部隔壁11cを中間隔壁11bよりも更に低くすることにより、浸漬塗布槽1から発生する有機溶剤Sのミスト含有ガスが流れ込み易くしている。また、凝縮槽2内では冷却によって空気中に含まれる水蒸気からの凝縮水も発生するため、水分離槽7に送られる有機溶剤Sの液中には混入水Wが存在するが、既述のように該水分離槽7内で混入水Wを比重差で分離し、その貯留室7cに溜まる有機溶剤Sのみを溶剤返送管路L5を通して溢流槽4内へ送るようにしているから、作業空間の湿度の高低に影響されずに高純度の回収溶媒を確保でき、混入水Wが着色塗料P中に混ざり込んで塗装品質が低下するのを防止できる。   In addition, in the coloring coating apparatus of this embodiment, since the front side of the aggregation tank 2 is separated from the dip coating tank 1 due to the presence of the overflow tank 4, the wide space 2a in which the coil-like refrigerant pipe 5A is disposed on the front side. As the cooling capacity is increased, the front partition wall 11c between the overflow tank 4 and the intermediate partition wall 11b is made lower than the intermediate partition wall 11b, so that the mist-containing gas of the organic solvent S generated from the dip coating tank 1 can easily flow. Yes. Further, since condensed water from water vapor contained in the air is also generated by cooling in the condensing tank 2, mixed water W is present in the liquid of the organic solvent S sent to the water separation tank 7. In this way, the mixed water W is separated by the specific gravity difference in the water separation tank 7 and only the organic solvent S accumulated in the storage chamber 7c is sent into the overflow tank 4 through the solvent return line L5. A high-purity recovered solvent can be secured without being affected by the level of humidity in the space, and mixed water W can be prevented from being mixed into the colored paint P and the coating quality being deteriorated.

上記の回収した有機溶剤Sの返送は、水分離槽7の貯留室7cにおけるフロート9Bで検知される液位が所定高さになった段階でポンプP2を作動させればよいが、このポンプP2の作動をフロート9Bからの検知信号に基づいて自動的に行うようにしてもよい。また、溢流槽4内へ送り込まれた有機溶剤Sは、当該溢流槽4内にある着色塗料Pに混ざり混んだ状態で、循環出口管路L3及び循環入口管路L1を通してポンプP1により浸漬塗布槽1内へ戻されるが、循環出口管路L3については溢流槽4におけるフロート9Aで検知される液位が所定高さになった段階で開閉弁Vaを開くようにすればよい。   The recovered organic solvent S may be returned by operating the pump P2 when the liquid level detected by the float 9B in the storage chamber 7c of the water separation tank 7 reaches a predetermined level. May be automatically performed based on a detection signal from the float 9B. Further, the organic solvent S sent into the overflow tank 4 is immersed in the pump P1 through the circulation outlet pipe L3 and the circulation inlet pipe L1 in a state of being mixed with the colored paint P in the overflow tank 4. Although it returns to the coating tank 1, what is necessary is just to open the on-off valve Va at the stage where the liquid level detected by the float 9A in the overflow tank 4 reaches a predetermined height for the circulation outlet pipe L3.

しかして、このように凝縮槽2から回収された有機溶剤Sを浸漬塗布槽1内へ戻すようにすれば、回収溶剤を用いて別途に塗料を調製するような手間を省けることになる。なお、この着色塗装では、蒸発する有機溶剤Sが回収されて着色塗料P中に戻される一方で、塗装によって着色塗料P中の着色剤や結合剤樹脂等の塗膜成分が消費されるから、浸漬塗布槽1内の着色塗料Pの濃度が次第に低下してゆくが、これに対しては形成塗膜の着色度合等から適否を判定し、許容限界に近づいた際に塗膜成分(所謂ネイルコートの未希釈分)を補充して濃度を高めるようにすればよい。   Thus, if the organic solvent S recovered from the condensation tank 2 is returned to the dip coating tank 1 as described above, the trouble of separately preparing the paint using the recovered solvent can be saved. In this colored coating, the organic solvent S that evaporates is recovered and returned to the colored paint P, while coating components such as the colorant and binder resin in the colored paint P are consumed by the coating, The concentration of the colored paint P in the dip coating tank 1 gradually decreases. For this, the suitability is determined from the degree of coloration of the formed coating film, etc. The concentration may be increased by supplementing the undiluted portion of the coat.

また、実施形態のように、浸漬塗布槽1内の着色塗料Pを循環出口管路L2及び循環入口管路L1を通してポンプP1で循環させれば、該浸漬塗布槽1内の着色塗料P全体の性状が偏りなく均一に維持されるから、良好な着色塗膜を安定的に形成でき、それだけ着色塗装の歩留りが向上することになる。一方、凝縮槽2内の冷却手段としては種々の冷却方式を採用可能であるが、実施形態のように冷媒配管内を通る冷媒との熱交換による方式では、有機溶媒Sの種類による凝縮温度の違いや浸漬塗装の稼働条件に対応した冷却制御を容易に且つ広範囲に行えるという利点がある。   Moreover, if the colored paint P in the dip coating tank 1 is circulated by the pump P1 through the circulation outlet pipe L2 and the circulation inlet pipe L1 as in the embodiment, the entire colored paint P in the dip coating tank 1 is circulated. Since the properties are maintained uniformly without unevenness, a good colored coating film can be stably formed, and the yield of the colored coating is improved accordingly. On the other hand, various cooling methods can be adopted as the cooling means in the condensing tank 2, but in the method by heat exchange with the refrigerant passing through the refrigerant pipe as in the embodiment, the condensation temperature of the type of the organic solvent S is changed. There is an advantage that the cooling control corresponding to the difference and the operation condition of the dip coating can be easily and widely performed.

着色塗料Pには所謂ネイルコートとして従来より釘の着色塗装に使用されている種々の釘着色用塗料を使用できるが、その希釈用溶剤には揮発性有機溶剤、特に沸点35〜90℃程度の低沸点の揮発性有機溶剤を用いるのがよい。このような低沸点の揮発性有機溶剤の具体例としては、メチレンクロライド,酢酸エチル、ハイドロフルオロエチレン(HFE)、ハイドロフルオロカーボン(HFC)、1−ブロムプロパン、トリクロロエチレン等が挙げられるが、特にメチレンクロライドが好適である。   As the coloring paint P, various kinds of nail coloring paints conventionally used for so-called nail coating as a so-called nail coat can be used. The diluting solvent is a volatile organic solvent, particularly having a boiling point of about 35 to 90 ° C. It is preferable to use a low-boiling volatile organic solvent. Specific examples of such low-boiling volatile organic solvents include methylene chloride, ethyl acetate, hydrofluoroethylene (HFE), hydrofluorocarbon (HFC), 1-bromopropane, trichloroethylene, and the like. Is preferred.

浸漬塗布槽1において加温する着色塗料Pの設定温度は、使用する揮発性有機溶剤Sの種類によって適正値が異なるが、一般的には沸点−(1〜10)℃程度の範囲(ただし、加温が前提なので室温より高い温度)が好ましい。例えば、溶剤がメチレンクロライド(沸点39.8℃)の場合、36〜38℃程度に加温するのがよい。一方、凝縮槽2における冷却温度は、やはり使用する揮発性有機溶剤Sの種類によって適正値が異なるが、そのガスを確実に凝縮・液化して且つ空気中水分の氷結を避ける上で、一般的に0〜5℃の範囲が推奨される。なお、このような加温温度及び冷却温度は、処理中に適正範囲を維持できるように、浸漬塗布槽1及び凝縮槽2と油浴槽3の温度計Tによる計測温度値に基づいてCPUで自動制御することが可能である。   The set temperature of the colored coating P to be heated in the dip coating tank 1 varies depending on the type of the volatile organic solvent S to be used, but generally ranges from about boiling point to (1 to 10) ° C. (however, A temperature higher than room temperature is preferable because heating is premised. For example, when the solvent is methylene chloride (boiling point: 39.8 ° C.), the temperature is preferably about 36 to 38 ° C. On the other hand, the cooling temperature in the condensing tank 2 varies depending on the type of the volatile organic solvent S to be used. However, in order to reliably condense and liquefy the gas and avoid freezing of moisture in the air, it is general. A range of 0-5 ° C is recommended. In addition, such a heating temperature and cooling temperature are automatically performed by the CPU based on temperature values measured by the thermometer T of the dip coating tank 1, the condensation tank 2 and the oil tub 3 so that an appropriate range can be maintained during processing. It is possible to control.

なお、前記実施形態では凝縮槽2から回収された有機溶媒Sを水分離槽7から溢流槽4へ送液しているが、本発明の着色塗装装置では該有機溶媒Sを浸漬塗布槽1へ直接に送るようにしてもよい。また、この実施形態のように溢流槽2を備える構成では、浸漬塗布槽1内の着色塗料P全体の性状をより均一に安定的に維持させる目的で、溢流槽4の循環出口管路L3の開閉弁Vaを開弁状態に保ち、浸漬塗布槽1から溢流槽4への溢流が継続する形でポンプP1による塗料循環を行うようにしてもよい。更に、浸漬塗布槽1内の着色塗料Pの加温手段として、例示した油浴槽3以外の間接加熱方式も採用可能である。その他、本発明の着色塗装装置にあっては、凝集槽2内の冷媒配管の管路構成、未塗装釘N…を保持させる索体6の形態及び材質、該索体6の搬送経路及び送り手段等、細部構成については実施形態以外に種々設計変更可能である。   In the above embodiment, the organic solvent S recovered from the condensing tank 2 is fed from the water separation tank 7 to the overflow tank 4. However, in the coloring coating apparatus of the present invention, the organic solvent S is immersed in the dip coating tank 1. It may be sent directly to. Moreover, in the structure provided with the overflow tank 2 as in this embodiment, the circulation outlet pipe line of the overflow tank 4 is used for the purpose of more uniformly and stably maintaining the properties of the colored paint P in the dip coating tank 1. The on-off valve Va of L3 may be kept open and the paint circulation by the pump P1 may be performed in such a manner that the overflow from the dip coating tank 1 to the overflow tank 4 continues. Furthermore, as a heating means for the colored paint P in the dip coating tank 1, an indirect heating method other than the illustrated oil bath 3 can be employed. In addition, in the colored coating apparatus of the present invention, the pipe configuration of the refrigerant pipe in the aggregation tank 2, the form and material of the cable body 6 that holds the unpainted nail N, the transport path and feed of the cable body 6 Various design changes other than the embodiment can be made for the detailed configuration such as means.

本発明の一実施形態に係る釘の着色塗装装置全体の概略構成を示す模式図である。It is a schematic diagram which shows schematic structure of the whole coloring coating apparatus of the nail which concerns on one Embodiment of this invention. 同着色塗装装置の塗装機本体を示し、(A)は正面図、(B)は側面図である。The coating machine main body of the coloring coating apparatus is shown, (A) is a front view, and (B) is a side view. 図2(A)のX−X線の断面矢視図である。FIG. 3 is a cross-sectional view taken along line XX in FIG. 図2(B)のY−Y線の断面矢視図である。FIG. 3 is a cross-sectional view taken along line YY in FIG.

符号の説明Explanation of symbols

1 浸漬塗布槽
2 凝縮槽
3 油浴槽(加温手段)
4 溢流槽
5A,5B 冷媒配管(冷却手段)
6 索体
7 水分離槽
8 冷凍機(冷却手段)
10 塗装機本体
13 ギヤ噛合部(釘送り手段)
L1 循環入口管路(溶剤返送手段,塗料循環手段)
L2 循環出口管路(塗料循環手段)
L3 循環出口管路(溶剤返送手段,塗料循環手段)
L4 溶剤回収管路(溶剤回収手段)
L5 溶剤返送管路(溶剤返送手段)
M モーター(釘送り手段)
N 未塗装釘
P 着色塗料
P1 ポンプ(溶剤返送手段,塗料循環手段)
P2 ポンプ(溶剤返送手段)
R1〜R7 ガイドローラー
S 有機溶剤
W 混入水
1 Dipping / coating tank 2 Condensing tank 3 Oil bath (heating means)
4 Overflow tank 5A, 5B Refrigerant piping (cooling means)
6 Rope 7 Water separation tank 8 Refrigerator (cooling means)
10 Coating machine body 13 Gear meshing part (nail feeding means)
L1 Circulation inlet pipeline (solvent return means, paint circulation means)
L2 Circulation outlet pipeline (paint circulation means)
L3 Circulation outlet pipeline (solvent return means, paint circulation means)
L4 Solvent recovery pipeline (solvent recovery means)
L5 Solvent return pipeline (solvent return means)
M motor (nail feeding means)
N unpainted nail P colored paint P1 pump (solvent return means, paint circulation means)
P2 pump (solvent return means)
R1-R7 Guide roller S Organic solvent W Water mixed

Claims (6)

揮発性有機溶剤を含む着色塗料を収容する上方開放型の浸漬塗布槽と、該浸漬塗布槽の加温手段と、該浸漬塗布槽の周囲に配置して上部が開放した凝縮槽と、該凝縮槽内の冷却手段と、未塗装釘を所定間隔で保持した索体を上方から連続的に浸漬塗布槽内の着色塗料中に潜らせて引き出す釘送り手段と、凝縮槽内で凝縮した前記有機溶剤の液を回収する溶剤回収手段とを具備してなる釘の着色塗装装置。   An upwardly open dip coating tank containing a colored paint containing a volatile organic solvent, heating means for the dip coating tank, a condensing tank disposed around the dip coating tank and having an open top, and the condensation Cooling means in the tank, nail feed means for continuously pulling out the cable body holding unpainted nails at predetermined intervals in the colored paint in the immersion coating tank, and the organic condensed in the condensation tank A nail coloring and coating apparatus comprising a solvent recovery means for recovering a solvent liquid. 前記凝縮槽から回収された有機溶剤を浸漬塗布槽内へ戻す溶剤返送手段を具備してなる請求項1記載の釘の着色塗装装置。   The nail coloring and coating apparatus according to claim 1, further comprising a solvent returning means for returning the organic solvent recovered from the condensing tank into the dip coating tank. 前記浸漬塗布槽内の着色塗料を循環させる塗料循環手段を具備してなる請求項1又は2に記載の釘の着色塗装装置。   The nail color coating apparatus according to claim 1, further comprising a paint circulation means for circulating the color paint in the dip coating tank. 前記冷却手段が、凝縮槽内の冷媒配管内を通る冷媒との熱交換によって有機溶剤ガスを凝縮させるものである請求項1〜3の何れかに記載の釘の着色塗装装置。   The nail color coating apparatus according to any one of claims 1 to 3, wherein the cooling means condenses the organic solvent gas by heat exchange with the refrigerant passing through the refrigerant pipe in the condensing tank. 前記凝縮槽から回収された有機溶剤中の混入水を比重差によって分離する水分離槽を具備してなる請求項1〜4の何れかに記載の釘の着色塗装装置。   The nail color coating apparatus according to any one of claims 1 to 4, further comprising a water separation tank for separating mixed water in the organic solvent recovered from the condensation tank by a specific gravity difference. 前記揮発性有機溶剤がメチレンクロライドである請求項1〜5の何れかに記載の釘の着色塗装装置。   The nail color coating apparatus according to any one of claims 1 to 5, wherein the volatile organic solvent is methylene chloride.
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CN108525938A (en) * 2018-03-30 2018-09-14 重庆润跃机械有限公司 Device for soaking oil for gear
CN109513580A (en) * 2018-12-26 2019-03-26 宁波胜利汽配有限公司 A kind of automobile parts immersion draining device that combination cleaning is integrated with immersion oil

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