JP3366692B2 - Full dip type electrodeposition coating equipment and pretreatment equipment - Google Patents
Full dip type electrodeposition coating equipment and pretreatment equipmentInfo
- Publication number
- JP3366692B2 JP3366692B2 JP18348493A JP18348493A JP3366692B2 JP 3366692 B2 JP3366692 B2 JP 3366692B2 JP 18348493 A JP18348493 A JP 18348493A JP 18348493 A JP18348493 A JP 18348493A JP 3366692 B2 JP3366692 B2 JP 3366692B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- boat
- overhead conveyor
- traveling direction
- processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、ハンガーを有するオー
バーヘッドコンベヤと、舟型処理槽とを備えるフルディ
ップ式電着塗装装置及び前処理装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full-dip type electrodeposition coating apparatus and a pretreatment apparatus having an overhead conveyor having a hanger and a boat type processing tank.
【０００２】[0002]
【従来の技術】ハンガーを有するオーバーヘッドコンベ
ヤと、舟型処理槽とを備える従来のフルディップ式電着
塗装装置においては、図７に示すように、舟型処理槽内
に、舟型処理槽の側面から見て、表層がオーバーヘッド
コンベヤの進行方向前方に流れる１つの大きな処理液の
巡回流が作られ、舟型処理槽のオーバーヘッドコンベヤ
の進行方向前方端に、堰を介して１つのサブタンクが設
置されている。上記フルディップ式電着塗装装置におい
ては、処理液の表層流の一部が、堰を越えてサブタンク
内に流入し、サブタンクから循環ポンプに吸引され、フ
ィルターを経由して舟型処理槽内に配設された処理液噴
射ノズルから噴射され、前記循環流を形成する。前記循
環流により、ワークの出槽時に発生する気泡が堰を越え
て槽外に排出されると共に、処理液の攪拌が行われて、
舟型処理槽内の処理液の一様性が確保される。沈降物を
含む舟型処理槽底部の処理液は、舟型処理槽底壁端部に
配設された吸引口から循環ポンプにより吸引され、フィ
ルターと処理液噴射ノズルとを経由して舟型処理槽内へ
還流される。2. Description of the Related Art In a conventional full-dip type electrodeposition coating apparatus equipped with an overhead conveyor having a hanger and a boat type processing tank, as shown in FIG. When viewed from the side, a large circulating liquid of the processing solution whose surface layer flows forward in the traveling direction of the overhead conveyor is created, and one sub-tank is installed via a weir at the forward end of the boat type processing tank overhead conveyor in the traveling direction. Has been done. In the above-mentioned full-dip type electrodeposition coating apparatus, a part of the surface layer flow of the processing liquid flows into the sub tank over the weir, is sucked by the circulation pump from the sub tank, and enters the boat-shaped processing tank via the filter. It is ejected from the disposed treatment liquid ejection nozzle to form the circulating flow. By the circulating flow, bubbles generated when the workpiece is discharged from the tank are discharged to the outside of the tank through the weir, and the processing liquid is stirred.
Uniformity of the processing liquid in the boat-shaped processing tank is ensured. The processing liquid at the bottom of the boat-shaped processing tank containing sediment is sucked by the circulation pump from the suction port provided at the end of the bottom wall of the boat-shaped processing tank, and is processed by the boat-shaped processing through the filter and the processing liquid injection nozzle. It is refluxed into the tank.
【０００３】ハンガーを有するオーバーヘッドコンベヤ
と、舟型処理槽とを備える従来のフルディップ式前処理
装置においては、図８に示すように、舟型処理槽内に、
舟型処理槽の側面から見て、表層がオーバーヘッドコン
ベヤの進行方向後方に流れる１つの大きな処理液の巡回
流が作られ、舟型処理槽のオーバーヘッドコンベヤの進
行方向後方端に、堰を介して１つのサブタンクが設置さ
れている。上記フルディップ式前処理装置においては、
処理液の表層流の一部が、堰を越えてサブタンク内に流
入し、サブタンクから循環ポンプに吸引され、フィルタ
ーを経由して舟型処理槽内に配設された処理液噴射ノズ
ルから噴射され、前記循環流を形成する。前記循環流に
より、ワークの入槽時に流入する処理液によってワーク
の袋状構造部分等から処理液中に舞い上げられた鉄粉等
の一部は、ワークを離れた後、堰を越えて槽外に排出さ
れ、他の一部はワークを離れた後、堰の前方から槽底に
向かって沈降する。また、前記循環流により、処理液の
攪拌が行われて、舟型処理槽内の処理液の一様性が確保
される。鉄粉等の沈降物を含む舟型処理槽底部の処理液
は、舟型処理槽底壁端部に配設された吸引口から循環ポ
ンプにより吸引され、フィルターと処理液噴射ノズルと
を経由して舟型処理槽内へ還流される。舟型処理槽の底
壁に堆積した鉄粉等は時々実施される清掃で除去され
る。In a conventional full-dip type pretreatment apparatus equipped with an overhead conveyor having a hanger and a boat type processing tank, as shown in FIG.
When viewed from the side of the boat-shaped processing tank, a large circulating liquid of the processing solution whose surface layer flows backward in the traveling direction of the overhead conveyor is created, and through a weir at the rear end of the boat-shaped processing tank in the traveling direction of the overhead conveyor. One sub-tank is installed. In the full dip type pretreatment device,
A part of the surface layer flow of the processing liquid flows into the sub tank over the weir, is sucked by the circulation pump from the sub tank, and is injected from the processing liquid injection nozzle installed in the boat-shaped processing tank through the filter. Form the circulating flow. Due to the circulating flow, a part of iron powder or the like that is floated up into the processing liquid from the bag-shaped structure portion of the work by the processing liquid that flows in when the workpiece enters the tank passes the weir after leaving the tank. After being discharged outside and part of the work leaving the work, it settles from the front of the weir toward the bottom of the tank. Further, the circulating flow stirs the processing liquid, and ensures the uniformity of the processing liquid in the boat-shaped processing tank. The processing liquid at the bottom of the boat-shaped processing tank containing sediment such as iron powder is sucked by the circulation pump from the suction port provided at the end of the bottom wall of the boat-shaped processing tank, and passes through the filter and the processing liquid injection nozzle. It is returned to the boat type processing tank. Iron powder and the like accumulated on the bottom wall of the boat-type processing tank are removed from time to time by cleaning.
【０００４】[0004]
【発明が解決しようとする課題】ハンガーを有するオー
バーヘッドコンベヤと、舟型処理槽とを備える従来のフ
ルディップ式前処理装置においては、ワークの入槽時に
ワーク近傍に処理液の上昇流が無いので、一旦舞い上が
った鉄粉等が直ぐに降下してワークに再付着するという
問題があった。ハンガーを有するオーバーヘッドコンベ
ヤと、舟型処理槽とを備える従来のフルディップ式電着
塗装装置においては、ワークの入槽時にワークから処理
液中に舞い上った鉄粉等、すなわち前処理装置では完全
に除去できずにワーク中に残留し或いはワークに再付着
した鉄粉等が、表層流と共にワークと同一方向に移動し
ワークの内外面に再付着して、塗装不良を惹起するとい
う問題があった。本発明は上記の問題に鑑みてなされた
ものであり、ハンガーを有するオーバーヘッドコンベヤ
と舟型処理槽とを備えるフルディップ式電着塗装装置及
び前処理装置であって、ワークが舟型処理槽に入槽する
時にワークに流入する処理液によって舞い上げられた鉄
粉等を、ワークに再付着する前に槽外に排出する手段を
備える装置を提供することを目的とする。In the conventional full-dip type pretreatment apparatus having the overhead conveyor having the hanger and the boat type processing tank, there is no upward flow of the processing liquid in the vicinity of the workpiece when the workpiece enters the tank. However, there was a problem that the iron powder etc. that had once risen would immediately fall and reattach to the work. In a conventional full-dip type electrodeposition coating apparatus equipped with an overhead conveyor having a hanger and a boat-type processing tank, iron powder or the like that floats up from the workpiece into the processing liquid when the workpiece enters the tank, that is, in the pretreatment apparatus There is a problem that iron powder etc. that could not be completely removed and remained in the work or reattached to the work moved in the same direction as the work along with the surface layer flow and reattached to the inner and outer surfaces of the work, causing defective coating. there were. The present invention has been made in view of the above problems, and is a full-dip type electrodeposition coating apparatus and a pretreatment apparatus including an overhead conveyor having a hanger and a boat type processing tank, wherein the work is a boat type processing tank. An object of the present invention is to provide an apparatus provided with a means for discharging iron powder or the like that has been floated up by a processing liquid flowing into a work when entering a tank to the outside of the tank before reattaching to the work.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明においては、ハンガーを有するオーバーヘッ
ドコンベヤと、舟型処理槽とを備え、舟型処理槽の底壁
には、オーバーヘッドコンベヤの進行方向後方に後方傾
斜部が形成され、オーバーヘッドコンベヤの進行方向前
方に前方傾斜部が形成され、後方傾斜部と前方傾斜部と
の間に水平部が形成されたフルディップ式電着塗装装置
において、舟型処理槽内の処理液に水平に全没して入槽
が完了したワークの前端近傍位置を通る横断面に沿う上
向きの処理液の流れを、前記横断面よりもオーバーヘッ
ドコンベヤの進行方向前方と前記横断面よりもオーバー
ヘッドコンベヤの進行方向後方とに発生させる手段と、
前記横断面よりもオーバーヘッドコンベヤの進行方向前
方の領域にある舟型処理槽内の処理液を、舟型処理槽の
側面から見て表層流がオーバーヘッドコンベヤの進行方
向前方に向かうように循環させる手段と、前記横断面よ
りもオーバーヘッドコンベヤの進行方向後方の領域にあ
る舟型処理槽内の処理液を、舟型処理槽の側面から見て
表層流がオーバーヘッドコンベヤの進行方向後方に向か
うように循環させる手段と、舟型処理槽のオーバーヘッ
ドコンベヤの進行方向前方端と後方端とにそれぞれ堰を
介して連設されたサブタンクと、サブタンクに流入した
表層の処理液を除塵し舟型処理槽に還流させる手段とを
備えることを特徴とするフルディップ式電着塗装装置を
提供する。In order to solve the above problems, in the present invention, an overhead conveyor having a hanger and a boat type processing tank are provided, and the bottom wall of the boat type processing tank is provided with an overhead conveyor of the overhead conveyor. In a full-dip type electro-deposition coating apparatus in which a rear inclined portion is formed in the rear of the traveling direction, a front inclined portion is formed in the front of the traveling direction of the overhead conveyor, and a horizontal portion is formed between the rear inclined portion and the front inclined portion. The flow direction of the upward processing liquid along the cross section passing through the vicinity of the front end of the workpiece, which is completely submerged in the processing liquid in the boat-shaped processing tank and the tank is completed, Means for generating in front of and in the traveling direction of the overhead conveyor relative to the cross section,
Means for circulating the treatment liquid in the boat-shaped treatment tank in the region in the forward direction of the overhead conveyor with respect to the cross-section so that the surface layer flow is forward in the forward direction of the overhead conveyor when viewed from the side of the boat-shaped treatment tank. And circulate the treatment liquid in the boat-shaped treatment tank in the area behind the cross section in the traveling direction of the overhead conveyor so that the surface layer flow is directed toward the rear in the traveling direction of the overhead conveyor when viewed from the side of the boat-shaped treatment tank. Means, and a sub-tank connected via a weir to the front and rear ends of the boat-type processing tank overhead conveyor in the advancing direction, respectively, and the surface layer processing liquid that has flowed into the sub-tank is removed and returned to the boat-shaped processing tank. There is provided a full-dip type electrodeposition coating apparatus, which is provided with:
【０００６】また本発明においては、ハンガーを有する
オーバーヘッドコンベヤと、舟型処理槽とを備え、舟型
処理槽の底壁には、オーバーヘッドコンベヤの進行方向
後方に後方傾斜部が形成され、オーバーヘッドコンベヤ
の進行方向前方に前方傾斜部が形成され、後方傾斜部と
前方傾斜部との間に水平部が形成されたフルディップ式
前処理装置において、舟型処理槽内の処理液に水平に全
没して入槽が完了したワークの前端近傍位置を通る横断
面に沿う上向きの処理液の流れを、前記横断面よりもオ
ーバーヘッドコンベヤの進行方向後方で発生させる手段
と、舟型処理槽内の処理液を、舟型処理槽の側面から見
て表層流がオーバーヘッドコンベヤの進行方向後方に向
かうように循環させる手段と、舟型処理槽のオーバーヘ
ッドコンベヤの進行方向後方端に堰を介して連設された
サブタンクと、サブタンクに流入した表層の処理液を除
塵し舟型処理槽に還流させる手段とを備えることを特徴
とするフルディップ式前処理装置を提供する。Further, according to the present invention, an overhead conveyor having a hanger and a boat-type processing tank are provided, and a rearwardly inclined portion is formed on the bottom wall of the boat-shaped processing tank at the rear of the traveling direction of the overhead conveyor. In the full-dip type pretreatment device in which the front sloped part is formed in the front of the traveling direction and the horizontal part is formed between the rear sloped part and the front sloped part, it is completely submerged in the processing liquid in the boat-shaped processing tank. And means for generating an upward flow of the processing liquid along the cross section passing through the vicinity of the front end of the workpiece, which has been completed in the tank, behind the cross section in the traveling direction of the overhead conveyor, and the processing in the boat-shaped processing tank. A means for circulating the liquid so that the superficial flow is directed rearward in the traveling direction of the overhead conveyor when viewed from the side of the boat processing tank, and the progress of the overhead conveyor of the boat processing tank. Provided is a full-dip type pretreatment device comprising a sub-tank continuously connected to the rear end in the direction via a weir, and means for removing the surface layer treatment liquid flowing into the sub-tank and returning it to a boat-type treatment tank. To do.
【０００７】[0007]
【作用】本発明に係るフルディップ式電着塗装装置にお
いては、ワークの入槽時にワークから処理液中に舞い上
った鉄粉等、すなわち前処理装置では完全に除去できず
にワーク中に残留し或いはワークに再付着した鉄粉等
は、舟型処理槽内の処理液に水平に全没して入槽が完了
したワークの前端近傍位置を通る横断面よりもオーバー
ヘッドコンベヤの進行方向後方の領域にある舟型処理槽
内の処理液の表層流によって、ワークから引き離されて
オーバーヘッドコンベヤの進行方向後方へ運ばれ、舟型
処理槽の後方端において、一部は表層流の一部と共に堰
を越えてサブタンクへ流入し舟型処理槽から除去され、
他の一部は循環流と共に槽底に向かって降下する。前記
横断面よりもオーバーヘッドコンベヤの進行方向後方に
於いて前記横断面に沿って上方に向かう処理液の流れに
より、ワークの入槽時にワークから処理液中に舞い上っ
た鉄粉等が直ぐに降下する事態が阻止され、ひいては鉄
粉等のワークへの再付着が阻止される。前記横断面より
もオーバーヘッドコンベヤの進行方向前方の領域にワー
クが進入する頃から、ワークと舟型処理槽内に配設され
た電極との間に電流が流され、ワークが塗装される。前
記横断面よりもオーバーヘッドコンベヤの進行方向前方
の領域にある処理液と前記横断面よりもオーバーヘッド
コンベヤの進行方向後方の領域にある処理液とには、そ
れぞれ別個の循環流が形成されているので、前記横断面
よりもオーバーヘッドコンベヤの進行方向後方の領域に
ある処理液中に含まれる鉄粉等が前記横断面よりもオー
バーヘッドコンベヤの進行方向前方の領域にある処理液
中に混入するおそれは無い。ワークの出槽時に発生する
落下液等による気泡は、前記横断面よりもオーバーヘッ
ドコンベヤの進行方向前方の領域にある処理液の表層流
の一部と共に、舟型処理槽の前方端において、堰を越え
てサブタンクへ流入し、舟型処理槽から除去される。In the full-dip type electrodeposition coating apparatus according to the present invention, iron powder or the like that has risen from the work into the processing liquid at the time of entering the work, that is, cannot be completely removed by the pre-processing apparatus Iron powder, etc. that remains or reattaches to the work is completely submerged horizontally in the processing liquid in the boat-shaped processing tank, and the tank is completed. Is separated from the work by the surface layer flow of the processing liquid in the boat type processing tank in the area of the above, and is conveyed to the rear in the traveling direction of the overhead conveyor. It flows over the weir, flows into the sub tank, and is removed from the boat-type processing tank.
The other part descends with the circulation flow toward the bottom of the tank. Due to the flow of the processing liquid upward along the horizontal cross section in the traveling direction of the overhead conveyor with respect to the horizontal cross section, iron powder and the like rising from the work into the processing liquid immediately descends when the workpiece enters the tank. This prevents the re-adhesion of iron powder or the like to the work. An electric current is applied between the work and the electrode arranged in the boat-shaped processing tank from the time when the work enters the area in front of the cross section in the traveling direction of the overhead conveyor, and the work is painted. Since the treatment liquid in the region in the forward direction of the overhead conveyor with respect to the cross section and the treatment liquid in the region in the backward direction of the overhead conveyor with respect to the cross section have separate circulation flows, respectively. , There is no possibility that iron powder or the like contained in the processing liquid in the area behind the overhead conveyor in the advancing direction with respect to the cross section will be mixed in the processing liquid in the area in the advancing direction of the overhead conveyor with respect to the cross section. . Bubbles due to the falling liquid generated when the work is discharged from the weir at the front end of the boat-shaped processing tank, together with a part of the surface layer flow of the processing solution in the area in front of the cross section in the traveling direction of the overhead conveyor. It flows over to the sub-tank and is removed from the boat-type processing tank.
【０００８】本発明に係るフルディップ式前処理装置に
おいては、ワークの入槽時にワークから処理液中に舞い
上った鉄粉等は、舟型処理槽内の処理液の表層流によっ
て、ワークから引き離されてオーバーヘッドコンベヤの
進行方向後方へ運ばれ、舟型処理槽の後方端において、
一部は表層流の一部と共に堰を越えてサブタンクへ流入
し舟型処理槽から除去され、他の一部は循環流と共に槽
底に向かって降下する。前記横断面よりもオーバーヘッ
ドコンベヤの進行方向後方に於いて前記横断面に沿って
上方に向かう処理液の流れにより、ワークの入槽時にワ
ークから処理液中に舞い上った鉄粉等が直ぐに降下する
事態が阻止され、ひいては鉄粉等のワークへの再付着が
阻止される。In the full-dip type pretreatment apparatus according to the present invention, iron powder or the like rising up from the work into the treatment liquid at the time of entering the work is caused by the surface layer flow of the treatment liquid in the boat-shaped treatment tank. Is carried away to the rear in the traveling direction of the overhead conveyor, and at the rear end of the boat-shaped processing tank,
A part of the surface layer flows over the weir together with the part of the weir into the sub-tank and is removed from the boat type treatment tank, and the other part descends with the circulation flow toward the bottom of the tank. Due to the flow of the processing liquid upward along the horizontal cross section in the traveling direction of the overhead conveyor with respect to the horizontal cross section, iron powder and the like rising from the work into the processing liquid immediately descends when the workpiece enters the tank. This prevents the re-adhesion of iron powder or the like to the work.
【０００９】[0009]
【実施例】図１、図２を参照しつつ、本発明の第１実施
例に係る電着塗装装置を説明する。図１に示すように、
コンベヤレール１１と、コンベヤレール１１に懸架され
たコンベヤトロリー１２と、コンベヤトロリー１２に懸
架されたハンガー１３とを備えるオーバーヘッドコンベ
ヤ１が、図示しない塗装装置の天井部に配設されてい
る。コンベヤトロリー１２は図１において右方から左方
へ走行する。以後コンベヤトロリー１２の進行方向を前
方、コンベヤトロリー１２の進行方向に逆行する方向を
後方と呼ぶ。コンベヤレール１１は、上側走行部１１ａ
と、下側走行部１１ｂと、両者を繋ぐ後方傾斜部すなわ
ち入槽部１１ｃと、前方傾斜部すなわち出槽部１１ｄと
により構成されている。入槽部１１ｃ、出槽部１１ｄと
上側走行部１１ａ、下側走行部１１ｂとの接続部は円弧
状に形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An electrodeposition coating apparatus according to a first embodiment of the present invention will be described with reference to FIGS. As shown in Figure 1,
An overhead conveyor 1 including a conveyor rail 11, a conveyor trolley 12 suspended on the conveyor rail 11, and a hanger 13 suspended on the conveyor trolley 12 is disposed on a ceiling portion of a coating device (not shown). The conveyor trolley 12 runs from right to left in FIG. Hereinafter, the traveling direction of the conveyor trolley 12 is referred to as the front, and the direction reverse to the traveling direction of the conveyor trolley 12 is referred to as the rear. The conveyor rail 11 has an upper traveling portion 11a.
And a lower traveling portion 11b, a rearwardly inclined portion, that is, a tank portion 11c, and a frontwardly inclined portion, that is, a tank portion 11d that connect the two. The connecting portions of the inlet tank portion 11c and the outlet tank portion 11d and the upper traveling portion 11a and the lower traveling portion 11b are formed in an arc shape.
【００１０】オーバーヘッドコンベヤ１の下方には、舟
型処理槽２が配設されている。舟型処理槽２の底壁に
は、コンベヤレール１１の入槽部１１ｃ、下側走行部１
１ｂ、出槽部１１ｄにほぼ平行に、後方傾斜部、水平
部、前方傾斜部が形成されている。後方傾斜部の下端は
ほぼ水平に折り曲げられて前方に突出している。底壁後
方傾斜部のほぼ水平に折り曲げられて前方に突出する下
端と底壁水平部との間には、段差が設けられ、該段差部
には、吸引口２１が形成されている。舟型処理槽２の前
方端には、堰を介して前方サブタンク３ａが連設され、
舟型処理槽２の後方端には、堰を介して後方サブタンク
３ｂが連設されている。Below the overhead conveyor 1, a boat type processing tank 2 is arranged. On the bottom wall of the boat-shaped processing tank 2, the tank section 11c of the conveyor rail 11 and the lower traveling section 1 are provided.
A rear slant portion, a horizontal portion, and a front slant portion are formed substantially parallel to 1b and the bath portion 11d. The lower end of the rearwardly inclined portion is bent substantially horizontally and protrudes forward. A step is provided between the bottom wall horizontal portion of the bottom wall rear inclined portion that is bent substantially horizontally and protrudes forward, and a suction port 21 is formed in the step portion. At the front end of the boat-type processing tank 2, a front sub-tank 3a is continuously provided via a weir,
A rear sub-tank 3b is connected to the rear end of the boat-type processing tank 2 via a weir.
【００１１】コンベヤレールの入槽部１１ｃと下側走行
部１１ｂとを接続する円弧状部の前方端よりも数メート
ル前方位置、より明確には、舟型処理槽２内の処理液に
水平に全没して入槽が完了したワークすなわち乗用車ボ
デーＡの前端近傍位置、を通る横断面Ｂに隣接して、横
断面Ｂよりも前方の舟型処理槽底部に、上方に差し向け
られた複数の処理液噴射ノズル４ａが配設され、横断面
Ｂよりも後方の舟型処理槽底部に、上方に差し向けられ
た複数の処理液噴射ノズル４ｂが配設されている。処理
液噴射ノズル４ａ、４ｂと舟型処理槽２の底壁水平部と
の間には、舟型処理槽２の底壁後方傾斜部のほぼ水平に
折り曲げられて前方に突出する下端と同一高さ位置に、
且つ底壁後方傾斜部のほぼ水平に折り曲げられて前方に
突出する下端から間隔を隔てて、邪魔板５が配設されて
いる。A position several meters ahead of the front end of the arc-shaped portion connecting the inlet tank portion 11c of the conveyor rail and the lower traveling portion 11b, more specifically, horizontally to the processing liquid in the boat-shaped processing tank 2. A plurality of workpieces which are directed upward to the bottom of the boat-shaped processing tank adjacent to the transverse section B passing through the workpiece which is completely submerged and the tank is completed, that is, the position near the front end of the passenger car body A. The treatment liquid ejecting nozzles 4a are disposed, and a plurality of treatment liquid ejecting nozzles 4b directed upward are disposed at the bottom of the boat-shaped treatment tank behind the cross section B. Between the processing liquid injection nozzles 4a and 4b and the horizontal portion of the bottom wall of the boat-shaped processing tank 2, the bottom wall of the boat-shaped processing tank 2 is inclined substantially horizontally and has the same height as the lower end protruding forward. In position
In addition, the baffle plate 5 is disposed at a distance from the lower end of the bottom wall rear inclined portion that is bent substantially horizontally and protrudes forward.
【００１２】横断面Ｂよりも前方の領域において、前方
傾斜部も含む舟型処理槽底部に、後方且つ下方に差し向
けられた複数の処理液噴射ノズル４ｃが配設されてい
る。また、横断面Ｂよりも後方の領域において、後方傾
斜部も含む舟型処理槽底部に、前方且つ下方に差し向け
られた複数の処理液噴射ノズル４ｄが配設されている。
図２に示すように、横断面Ｂよりも前方の領域におい
て、舟型処理槽２の上側部に、斜め前方且つ水平に差し
向けられた複数の処理液噴射ノズル４ｅが配設されてい
る。また、横断面Ｂよりも後方の領域において、舟型処
理槽２の上側部に、斜め後方且つ水平に差し向けられた
複数の処理液噴射ノズル４ｆが配設されている。In a region anterior to the cross section B, a plurality of treatment liquid jet nozzles 4c directed rearward and downward are provided at the bottom of the boat-shaped treatment tank including the front inclined portion. Further, in a region rearward of the cross section B, a plurality of treatment liquid ejecting nozzles 4d directed forward and downward are arranged at the bottom of the boat-shaped treatment tank including the rearwardly inclined portion.
As shown in FIG. 2, in a region in front of the cross section B, a plurality of treatment liquid jet nozzles 4e directed obliquely forward and horizontally are arranged in an upper portion of the boat-shaped treatment tank 2. Further, in a region rearward of the cross-section B, a plurality of treatment liquid injection nozzles 4f that are directed obliquely rearward and horizontally are provided in the upper portion of the boat-shaped treatment tank 2.
【００１３】前方サブタンク３ａは、循環ポンプ６ａに
連結され、循環ポンプ６ａは、フィルター７ａを介し
て、処理液噴射ノズル４ａ、４ｃ、４ｅに連結されてい
る。後方サブタンク３ｂと吸引口２１とは、循環ポンプ
６ｂに連結され、循環ポンプ６ｂは、遠心式、電磁式等
の鉄粉除去装置８とフィルター７ｂとを介して、処理液
噴射ノズル４ｂ、４ｄ、４ｆに連結されている。The front sub-tank 3a is connected to a circulation pump 6a, and the circulation pump 6a is connected to treatment liquid injection nozzles 4a, 4c and 4e via a filter 7a. The rear sub-tank 3b and the suction port 21 are connected to a circulation pump 6b, and the circulation pump 6b passes through the iron powder removing device 8 of centrifugal type, electromagnetic type, etc. and the filter 7b, and the treatment liquid jet nozzles 4b, 4d, It is connected to 4f.
【００１４】上記の構成を有する本実施例に係る電着塗
装装置の作動を以下に説明する。横断面Ｂよりも前方の
領域にある舟型処理槽２内には、処理液噴射ノズル４
ａ、４ｃ、４ｅから噴射される処理液により、前方に向
かう表層流を有する処理液の循環流Ｃが形成され、横断
面Ｂよりも後方の領域にある舟型処理槽２内には、処理
液噴射ノズル４ｂ、４ｄ、４ｆから噴射される処理液に
より、後方に向かう表層流を有する処理液の循環流Ｄが
形成されている。ハンガー１３上に、ドア、ボンネット
等を開放固定した乗用車ボデーＡが固定されている。コ
ンベヤトロリー１２の走行に伴い、ハンガー１３上に固
定された乗用車ボデーＡは、舟型処理槽２の後方端近傍
から舟型処理槽２に入槽する。The operation of the electrodeposition coating apparatus according to this embodiment having the above structure will be described below. In the boat-shaped processing tank 2 in the area in front of the cross section B, the processing liquid injection nozzle 4
The treatment liquid injected from a, 4c, and 4e forms a circulation flow C of the treatment liquid having a surface layer flow toward the front, and the treatment liquid is formed in the boat-shaped treatment tank 2 in the region behind the cross section B. The processing liquid ejected from the liquid ejecting nozzles 4b, 4d, 4f forms a circulating flow D of the processing liquid having a surface layer flow toward the rear. A passenger car body A having doors, bonnets, etc. opened and fixed is fixed on the hanger 13. As the conveyor trolley 12 travels, the passenger car body A fixed on the hanger 13 enters the boat processing tank 2 from the vicinity of the rear end of the boat processing tank 2.
【００１５】乗用車ボデーＡの入槽開始から入槽完了ま
での間に、開放されたドア、ボンネット、ボデーの開口
部等から乗用車ボデーＡに流入する処理液により、前処
理装置では完全に除去できずに乗用車ボデーＡ内に残留
し或いは乗用車ボデーＡに再付着した鉄粉等が、乗用車
ボデーＡ外の処理液中に舞い上げられる。舞い上げられ
た鉄粉等は、入槽が完了した乗用車ボデーＡの前端近傍
位置を通る横断面である横断面Ｂよりも後方の領域に形
成された循環流Ｄの表層流によって、乗用車ボデーＡか
ら引き離されて後方へ運ばれる。循環流Ｄの表層流によ
って後方へ運ばれた鉄粉等の一部は、前記表層流の一部
と共に堰を越えて後方サブタンク３ｂへ流入し舟型処理
槽２から除去される。循環流Ｄの表層流によって後方へ
運ばれた鉄粉等の他の一部は、循環流Ｄと共に、舟型処
理槽底壁の後方傾斜部に沿って降下し、水平に折り曲げ
られて前方に突出する後方傾斜部下端の前端から底壁水
平部に落ち、吸引口２１を通って舟型処理槽２から除去
される。鉄粉等を沈降させた処理液は、邪魔板５の上方
に到達した後、処理液噴射ノズル４ｂから噴射される処
理液によって形成された上昇流に随伴して上昇する。後
方サブタンク３ｂへ流入し或いは吸引口２１へ流入した
鉄粉等を含む処理液は、循環ポンプ６ｂと鉄粉除去装置
８とフィルター７ｂとを通り、処理液噴射ノズル４ｂ、
４ｄ、４ｆを介して、横断面Ｂよりも後方の領域に還流
される。鉄粉除去装置８とフィルター７ｂとにより鉄粉
等が除去される。During the period from the start of the entry of the passenger car body A to the completion of the entry, the processing liquid flowing into the passenger car body A through the open door, bonnet, opening of the body, etc., can be completely removed by the pretreatment device. Iron powder or the like that remains in the passenger car body A or re-adheres to the passenger car body A is floated up in the treatment liquid outside the passenger car body A. The iron powder and the like that are lifted up are generated by the superficial flow of the circulation flow D formed in the region behind the horizontal cross section B which is a cross section passing through the vicinity of the front end of the passenger car body A in which the passenger tank body A has been completed. Is separated from and is carried backwards. A part of the iron powder or the like carried to the rear by the surface flow of the circulation flow D flows over the weir together with a part of the surface flow into the rear sub-tank 3b and is removed from the boat-shaped treatment tank 2. The other part of the iron powder or the like carried to the rear by the surface layer flow of the circulation flow D descends along with the circulation flow D along the rearward inclined portion of the bottom wall of the boat-shaped processing tank, and is bent horizontally to the front. It is dropped from the front end of the lower end of the protruding rearward inclined portion to the horizontal portion of the bottom wall, and is removed from the boat-shaped processing tank 2 through the suction port 21. The treatment liquid in which the iron powder or the like has settled reaches the upper side of the baffle plate 5 and then rises along with the upward flow formed by the treatment liquid jetted from the treatment liquid jet nozzle 4b. The processing liquid containing iron powder or the like that has flowed into the rear sub-tank 3b or the suction port 21 passes through the circulation pump 6b, the iron powder removal device 8 and the filter 7b, and then the processing liquid injection nozzle 4b,
It is returned to the area behind the cross section B via 4d and 4f. Iron powder and the like are removed by the iron powder removing device 8 and the filter 7b.
【００１６】処理液噴射ノズル４ｂから噴射される処理
液によって形成された、横断面Ｂに沿う上向きの処理液
の流れにより、乗用車ボデーＡの入槽時に乗用車ボデー
Ａから処理液中に舞い上った鉄粉等が直ぐに降下する事
態が阻止され、ひいては鉄粉等の乗用車ボデーＡへの再
付着が阻止される。従って、鉄粉等の乗用車ボデーＡへ
の再付着によって塗装欠陥を生ずるおそれは無い。横断
面Ｂよりも前方の領域に乗用車ボデーＡが進入する頃か
ら、乗用車ボデーＡと舟型処理槽２内に配設された図示
しない電極との間に電流が流され、乗用車ボデーＡが電
着塗装される。横断面Ｂよりも前方の領域には循環流Ｃ
が形成され、横断面Ｂよりも後方の領域には循環流Ｃと
は逆向きの循環流Ｄが形成されているので、横断面Ｂよ
りも後方の領域にある処理液中に含まれる鉄粉等が横断
面Ｂよりも前方の領域にある処理液中に混入するおそれ
は無い。The upward flow of the processing liquid, which is formed by the processing liquid sprayed from the processing liquid spraying nozzle 4b, along the cross section B, soars from the passenger car body A into the processing liquid when the passenger car body A enters the tank. The iron powder and the like are prevented from immediately falling, and thus the iron powder and the like are prevented from reattaching to the passenger car body A. Therefore, there is no possibility of causing coating defects due to redeposition of iron powder or the like on the passenger car body A. From the time when the passenger car body A enters the area in front of the cross section B, a current is passed between the passenger car body A and an electrode (not shown) arranged in the boat-shaped processing tank 2, and the passenger car body A is electrically charged. It is painted. Circulating flow C in the area in front of cross section B
Is formed and a circulation flow D opposite to the circulation flow C is formed in a region behind the cross section B, the iron powder contained in the treatment liquid in the region behind the cross section B is formed. There is no possibility that the like will be mixed in the processing liquid in the region in front of the cross section B.
【００１７】乗用車ボデーＡの出槽時に発生する落下液
等による気泡は、循環流Ｃの表層流の一部と共に堰を越
えて前方サブタンク３ａへ流入し、舟型処理槽２から速
やかに除去される。従って、電着塗装中の乗用車ボデー
Ａに気泡が付着して塗装欠陥を生ずるおそれは無い。前
方サブタンク３ａへ流入した処理液中の気泡は、サブタ
ンク３ａ内で消滅する。気泡を失ったサブタンク３ａ内
の処理液は、循環ポンプ６ａとフィルター７ａとを通
り、処理液噴射ノズル４ａ、４ｃ、４ｅを介して、横断
面Ｂよりも前方の領域に還流される。Bubbles due to the falling liquid generated when the passenger car body A exits the tank, together with a part of the surface flow of the circulation flow C, flow over the weir into the front sub-tank 3a and are promptly removed from the boat-shaped treatment tank 2. It Therefore, there is no possibility that air bubbles will adhere to the passenger car body A during electrodeposition coating to cause coating defects. The bubbles in the processing liquid flowing into the front sub tank 3a disappear in the sub tank 3a. The processing liquid in the sub-tank 3a that has lost the bubbles passes through the circulation pump 6a and the filter 7a and is returned to the region in front of the cross section B via the processing liquid injection nozzles 4a, 4c, and 4e.
【００１８】舟型処理槽２の底部に配設された処理液噴
射ノズル４ａ、４ｂ、４ｃ、４ｄは下方に差し向けられ
ているので、上記処理液噴射ノズルから噴射された処理
液により、舟型処理槽２の底部の処理液が攪拌される。
これにより、塗料の沈降が阻止される。邪魔板５によ
り、処理液噴射ノズル４ａ、４ｂから上向きに噴射され
る処理液に随伴して、処理液噴射ノズル４ａ、４ｂ下方
の舟型処理槽２の底壁に堆積した鉄粉等が舞い上がる事
態が防止される。Since the treatment liquid jet nozzles 4a, 4b, 4c, 4d arranged at the bottom of the boat-shaped treatment tank 2 are directed downward, the treatment liquid jetted from the treatment liquid jet nozzles causes The processing liquid at the bottom of the mold processing tank 2 is agitated.
This prevents the paint from settling. The baffle plate 5 accompanies the processing liquid jetted upward from the processing liquid jetting nozzles 4a and 4b, and the iron powder and the like accumulated on the bottom wall of the boat-shaped processing tank 2 below the processing liquid jetting nozzles 4a and 4b rises up. The situation is prevented.
【００１９】図３、図４を参照しつつ、本発明の第２実
施例に係る電着塗装装置を説明する。図３、図４におい
て、第１実施例に係る電着塗装装置の部材と同様の部材
には図１、２と同一の部材番号が付されている。本電着
塗装装置はＣ型ハンガー１３′を有している。舟型処理
槽２の側面から見て下面中央部が下方に山型に突出する
押え板９が、横断面Ｂが押え板９の下面中央部を通るよ
うに位置決めされ、下面を処理液の表面に当接させて配
設されている。押え板９の下面には、前記突出部よりも
前方位置に、前方且つ水平に差し向けられた複数の処理
液噴射ノズル１０ａが取り付けられ、前記突出部よりも
後方位置に、後方且つ水平に差し向けられた複数の処理
液噴射ノズル１０ｂが取り付けられている。また、押え
板９の下面には、前記突出部よりも後方位置に、後方且
つ下方に差し向けられた複数の処理液噴射ノズル１０ｃ
が取り付けられている。処理液噴射ノズル１０ａは、フ
ィルター７ａを介してポンプ６ａに連結され、処理液噴
射ノズル１０ｂ、１０ｃは、フィルター７ｂ、鉄粉除去
装置８を介してポンプ６ｂに連結されている。上記を除
き、本実施例に係る電着塗装装置の構成は第１実施例に
係る電着塗装装置の構成と同様である。An electrodeposition coating apparatus according to the second embodiment of the present invention will be described with reference to FIGS. 3 and 4. 3 and 4, the same members as those of the electrodeposition coating apparatus according to the first embodiment are designated by the same member numbers as in FIGS. The present electrodeposition coating apparatus has a C-shaped hanger 13 '. A holding plate 9 whose central portion on the lower surface projects downward in a mountain shape when viewed from the side of the boat-shaped processing tank 2 is positioned so that the cross section B passes through the central portion of the lower surface of the pressing plate 9, and the lower surface is the surface of the processing liquid. Is arranged so as to abut. On the lower surface of the holding plate 9, a plurality of treatment liquid ejecting nozzles 10a directed forward and horizontally are attached to a position forward of the protrusion, and are inserted backward and horizontally to a position rearward of the protrusion. A plurality of treatment liquid jet nozzles 10b that are directed are attached. Further, on the lower surface of the pressing plate 9, a plurality of treatment liquid ejecting nozzles 10c that are directed rearward and downward at a position rearward of the protruding portion.
Is attached. The treatment liquid injection nozzle 10a is connected to the pump 6a via the filter 7a, and the treatment liquid injection nozzles 10b and 10c are connected to the pump 6b via the filter 7b and the iron powder removing device 8. Except for the above, the configuration of the electrodeposition coating apparatus according to this embodiment is the same as the configuration of the electrodeposition coating apparatus according to the first embodiment.
【００２０】本実施例に係る電着塗装装置においては、
押え板９により、処理液の上昇流による液面の盛り上が
りが抑制され、ひいては気泡の発生が抑制される。ま
た、処理液噴射ノズル４ａから噴射された処理液によっ
て形成される上昇流は、押え板９の下面に形成された山
型突出部の前方斜面にそって前方へ導かれ、処理液噴射
ノズル４ｂから噴射された処理液によって形成される上
昇流は、押え板９の下面に形成された山型突出部の後方
斜面にそって後方へ導かれる。これにより、循環流Ｃ、
Ｄの形成が促進される。更に、処理液噴射ノズル１０ａ
から前方且つ水平に噴出された処理液により循環流Ｃの
形成が促進され、処理液噴射ノズル１０ｂから後方且つ
水平に噴出された処理液により循環流Ｄの形成が促進さ
れる。また、処理液噴射ノズル１０ｃから後方且つ下方
に噴射された処理液が、ボデーの開口部等を通って入槽
完了直後の乗用車ボデーＡ内に流入し、乗用車ボデーＡ
内の残留鉄粉等を舞い上げ、ボデーＡ外に運ぶ。これに
より、残留鉄粉等の乗用車ボデーＡからの除去が促進さ
れる。In the electrodeposition coating apparatus according to this embodiment,
The holding plate 9 suppresses the rise of the liquid surface due to the upward flow of the processing liquid, and thus suppresses the generation of bubbles. Further, the upward flow formed by the treatment liquid ejected from the treatment liquid ejecting nozzle 4a is guided forward along the front slope of the mountain-shaped protrusion formed on the lower surface of the holding plate 9, and the treatment liquid ejecting nozzle 4b. The ascending flow formed by the processing liquid injected from is guided rearward along the rearward slope of the mountain-shaped protrusion formed on the lower surface of the holding plate 9. Thereby, the circulation flow C,
The formation of D is promoted. Further, the treatment liquid injection nozzle 10a
The formation of the circulation flow C is promoted by the processing liquid jetted forward and horizontally from the above, and the formation of the circulation flow D is promoted by the processing liquid jetted horizontally and backward from the treatment liquid injection nozzle 10b. Further, the treatment liquid ejected rearward and downward from the treatment liquid ejection nozzle 10c flows into the passenger car body A immediately after the completion of the bath through the body opening or the like, and the passenger car body A
The residual iron powder inside is lifted up and carried outside Body A. This accelerates the removal of residual iron powder and the like from the passenger car body A.
【００２１】図５、図６を参照しつつ、本発明の実施例
に係る前処理装置の一つである脱脂装置を説明する。図
５に示すように、コンベヤレール１１１と、コンベヤレ
ール１１１に懸架されたコンベヤトロリー１１２と、コ
ンベヤトロリー１１２に懸架されたハンガー１１３とを
備えるオーバーヘッドコンベヤ１１が、図示しない塗装
装置の天井部に配設されている。コンベヤトロリー１１
２は図５において右方から左方へ走行する。以後コンベ
ヤトロリー１１２の進行方向を前方、コンベヤトロリー
１１２の進行方向に逆行する方向を後方と呼ぶ。コンベ
ヤレール１１１は、上側走行部１１１ａと、下側走行部
１１１ｂと、両者を繋ぐ後方傾斜部すなわち入槽部１１
１ｃと、前方傾斜部すなわち出槽部１１１ｄとにより構
成されている。入槽部１１１ｃ、出槽部１１１ｄと上側
走行部１１１ａ、下側走行部１１１ｂとの接続部は円弧
状に形成されている。オーバーヘッドコンベヤ１１の下
方には、舟型処理槽１２が配設されている。舟型処理槽
１２の底壁には、コンベヤレール１１１の入槽部１１１
ｃ、下側走行部１１１ｂ、出槽部１１１ｄにほぼ平行
に、後方傾斜部、水平部、前方傾斜部が形成されてい
る。前方傾斜部の下端には、吸引口１２１が形成されて
いる。舟型処理槽１２の後方端には、堰を介して後方サ
ブタンク１３ｂが連設されている。A degreasing device, which is one of the pretreatment devices according to the embodiment of the present invention, will be described with reference to FIGS. As shown in FIG. 5, an overhead conveyor 11 including a conveyor rail 111, a conveyor trolley 112 suspended from the conveyor rail 111, and a hanger 113 suspended from the conveyor trolley 112 is arranged on a ceiling portion of a coating device (not shown). It is set up. Conveyor trolley 11
2 runs from right to left in FIG. Hereinafter, the traveling direction of the conveyor trolley 112 will be referred to as the front, and the direction reverse to the traveling direction of the conveyor trolley 112 will be referred to as the rear. The conveyor rail 111 includes an upper traveling portion 111a, a lower traveling portion 111b, and a rearwardly inclined portion that connects them, that is, the tank portion 11
1c and the front inclined portion, that is, the tank portion 111d. The connecting portions of the inlet tank portion 111c and the outlet tank portion 111d and the upper traveling portion 111a and the lower traveling portion 111b are formed in an arc shape. Below the overhead conveyor 11, a boat type processing tank 12 is arranged. On the bottom wall of the boat-shaped processing tank 12, the tank part 111 of the conveyor rail 111 is provided.
A rear slant portion, a horizontal portion, and a front slant portion are formed substantially parallel to the c, the lower traveling portion 111b, and the tank portion 111d. A suction port 121 is formed at the lower end of the front inclined portion. A rear sub-tank 13b is continuously provided at the rear end of the boat processing tank 12 via a weir.
【００２２】コンベヤレールの入槽部１１１ｃと下側走
行部１１１ｂとを接続する円弧状部の前方端よりも数メ
ートル前方位置、より明確には、舟型処理槽１２内の処
理液に水平に全没して入槽が完了したワークすなわち乗
用車ボデーＡＡ、の前端近傍位置、を通る横断面ＢＢに
隣接して、横断面ＢＢよりも後方の舟型処理槽底部に、
上方に差し向けられた複数の処理液噴射ノズル１４ｂが
配設されている。舟型処理槽底部に、前方且つ底壁に平
行に差し向けられた複数の処理液噴射ノズル１４ｄが配
設されている。舟型処理槽１２の上側部に、斜め後方且
つ水平に差し向けられた複数の処理液噴射ノズル１４ｆ
が配設されている。後方サブタンク１３ｂと吸引口１２
１とは、循環ポンプ１６ｂに連結され、循環ポンプ１６
ｂは、遠心式、電磁式等の鉄粉除去装置１８とフィルタ
ー１７ｂとを介して、処理液噴射ノズル１４ｂ、１４
ｄ、１４ｆに連結されている。A position several meters ahead of the front end of the arc-shaped portion connecting the inlet tank portion 111c of the conveyor rail and the lower traveling portion 111b, more specifically, horizontally to the treatment liquid in the boat-shaped treatment tank 12 At the bottom of the boat-shaped processing tank, which is adjacent to the horizontal cross section BB passing through the workpiece completely immersed and the tank is completed, that is, the position near the front end of the passenger car body AA, behind the horizontal cross section BB,
A plurality of treatment liquid injection nozzles 14b directed upward are provided. At the bottom of the boat-shaped processing tank, a plurality of processing liquid ejecting nozzles 14d directed forward and parallel to the bottom wall are provided. A plurality of treatment liquid jet nozzles 14f directed obliquely backward and horizontally to the upper side of the boat-shaped treatment tank 12.
Is provided. Rear sub tank 13b and suction port 12
1 is connected to the circulation pump 16b, and the circulation pump 16b
b is a processing liquid injection nozzle 14b, 14 through the iron powder removing device 18 of centrifugal type or electromagnetic type and the filter 17b.
It is connected to d and 14f.
【００２３】上記の構成を有する本実施例に係る脱脂装
置の作動を以下に説明する。舟型処理槽１２内の全域
に、処理液噴射ノズル１４ｄ、１４ｆから噴射される処
理液により、後方に向かう表層流を有する処理液の大き
な循環流ＤＤが形成されている。横断面ＢＢよりも後方
の領域にある舟型処理槽１２内には、処理液噴射ノズル
１４ｂから噴射される処理液により、後方に向かう表層
流を有する処理液の部分循環流ＤＤＤが形成されてい
る。ハンガー１１３上に、ドア、ボンネット等を開放固
定した乗用車ボデーＡＡが固定されている。コンベヤト
ロリー１１２の走行に伴い、ハンガー１１３上に固定さ
れた乗用車ボデーＡＡは、舟型処理槽１２の後方端近傍
から舟型処理槽１２に入槽する。The operation of the degreasing device having the above structure according to this embodiment will be described below. A large circulating flow DD of the processing liquid having a surface layer flow toward the rear is formed by the processing liquid jetted from the processing liquid jet nozzles 14d and 14f in the entire boat-shaped processing tank 12. A partial circulation flow DDD of the processing liquid having a surface layer flow toward the rear is formed by the processing liquid jetted from the processing liquid jet nozzle 14b in the boat-shaped processing tank 12 in the region behind the cross section BB. There is. On the hanger 113, a passenger car body AA having doors, hoods and the like opened and fixed is fixed. As the conveyor trolley 112 travels, the passenger car body AA fixed on the hanger 113 enters the boat processing tank 12 from the vicinity of the rear end of the boat processing tank 12.
【００２４】乗用車ボデーＡＡの入槽開始から入槽完了
までの間に、開放されたドア、ボンネット、ボデーの開
口部等から乗用車ボデーＡＡに流入する処理液により、
乗用車ボデーＡＡ内に溜まり或いは乗用車ボデーＡＡに
付着した鉄粉等が、乗用車ボデーＡＡ外の処理液中に舞
い上げられる。舞い上げられた鉄粉等は、入槽が完了し
た乗用車ボデーＡＡの前端近傍位置を通る横断面である
横断面ＢＢよりも後方の領域に形成された部分循環流Ｄ
ＤＤの表層流によって、乗用車ボデーＡＡから引き離さ
れて後方へ運ばれる。部分循環流ＤＤＤの表層流によっ
て後方へ運ばれた鉄粉等の一部は、前記表層流の一部と
共に堰を越えて後方サブタンク１３ｂへ流入し舟型処理
槽１２から除去される。部分循環流ＤＤＤの表層流によ
って後方へ運ばれた鉄粉等の他の一部は、部分循環流Ｄ
ＤＤと共に、舟型処理槽底壁の後方傾斜部に沿って降下
する。舟型処理槽底部に到達した鉄粉等は、舟型処理槽
底部の処理液の一部と共に、吸引口１２１を通って舟型
処理槽１２から除去される。後方サブタンク１３ｂへ流
入し或いは吸引口１２１へ流入した鉄粉等を含む処理液
は、循環ポンプ１６ｂと鉄粉除去装置１８とフィルター
１７ｂとを通り、処理液噴射ノズル１４ｂ、１４ｄ、１
４ｆを介して、舟型処理槽に還流される。鉄粉除去装置
１８とフィルター１７ｂとにより鉄粉等が除去される。During the period from the start of the tank entry of the passenger car body AA to the completion of the tank entry, the treatment liquid flowing into the passenger car body AA from the opened door, bonnet, opening of the body, etc.
Iron powder or the like accumulated in the passenger car body AA or adhering to the passenger car body AA is floated up in the treatment liquid outside the passenger car body AA. The iron powder and the like that are lifted up are the partial circulation flow D formed in the region behind the horizontal cross-section BB that is the cross-section that passes through the vicinity of the front end of the passenger car body AA that has completed the tank.
The superficial flow of the DD causes the passenger car body AA to be pulled away from the passenger car body AA and carry it to the rear. A part of the iron powder or the like carried to the rear by the surface layer flow of the partial circulation flow DDD flows over the weir together with a part of the surface layer flow into the rear sub-tank 13b, and is removed from the boat-type treatment tank 12. The other part of the iron powder or the like carried to the rear by the surface layer flow of the partial circulation flow DDD is the partial circulation flow D.
Along with DD, it descends along the rearward inclined portion of the bottom wall of the boat-shaped processing tank. The iron powder and the like that have reached the bottom of the boat-shaped processing tank are removed from the boat-shaped processing tank 12 through the suction port 121 together with part of the processing liquid at the bottom of the boat-shaped processing tank. The processing liquid containing iron powder or the like flowing into the rear sub-tank 13b or the suction port 121 passes through the circulation pump 16b, the iron powder removing device 18, and the filter 17b, and then the processing liquid injection nozzles 14b, 14d, 1
It is returned to the boat type processing tank via 4f. Iron powder and the like are removed by the iron powder removing device 18 and the filter 17b.
【００２５】処理液噴射ノズル１４ｂから噴射される処
理液によって形成された、横断面ＢＢに沿う上向きの処
理液の流れにより、乗用車ボデーＡＡの入槽時に乗用車
ボデーＡＡから処理液中に舞い上った鉄粉等が直ぐに降
下する事態が阻止され、ひいては鉄粉等の乗用車ボデー
ＡＡへの再付着が阻止される。舟型処理槽１２内で、乗
用車ボデーＡＡの脱脂が行われる。The upward flow of the processing liquid formed by the processing liquid jetted from the processing liquid jet nozzle 14b along the cross section BB causes the processing liquid to rise from the passenger vehicle body AA into the processing liquid when the passenger vehicle body AA enters the tank. It prevents the iron powder and the like from immediately falling, and thus prevents the iron powder and the like from reattaching to the passenger car body AA. In the boat type processing tank 12, the passenger car body AA is degreased.
【００２６】以上本発明の実施例を説明したが、本発明
は上記実施例に限定されるものではない。例えば、第１
実施例に係る電着塗装装置においては、横断面Ｂよりも
前方の領域にある処理液を前方サブタンク３ａを介し
て、横断面Ｂよりも前方の領域に還流させ、横断面Ｂよ
りも後方の領域にある処理液を後方サブタンク３ｂと吸
入口２１とを介して、横断面Ｂよりも後方の領域に還流
させたが、横断面Ｂよりも前方の領域にある処理液を前
方サブタンク３ａを介して、横断面Ｂよりも後方の領域
に還流させ、横断面Ｂよりも後方の領域にある処理液を
後方サブタンク３ｂと吸入口２１とを介して、横断面Ｂ
よりも前方の領域に還流させても良い。これにより、舟
型処理槽内の処理液の均質性が向上する。押え板９は単
なる平板でも良い。第２実施例に係る電着塗装装置で述
べたごとく、押え板９により、処理液の上昇流による液
面の盛り上がりが抑制され、ひいては気泡の発生が抑制
される。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the first
In the electrodeposition coating apparatus according to the embodiment, the treatment liquid in the region in front of the cross section B is circulated to the region in front of the cross section B via the front sub-tank 3a, and the treatment liquid in the region behind the cross section B is returned. The processing liquid in the region was returned to the region behind the cross section B through the rear sub-tank 3b and the suction port 21, but the processing liquid in the region in front of the cross section B was passed through the front sub-tank 3a. And is made to flow back to the area behind the cross section B, and the processing liquid in the area behind the cross section B is passed through the rear sub-tank 3b and the suction port 21 to cross section B.
You may make it recirculate to the area | region ahead. This improves the homogeneity of the processing liquid in the boat-type processing tank. The holding plate 9 may be a simple flat plate. As described in the electrodeposition coating apparatus according to the second embodiment, the pressing plate 9 suppresses the rise of the liquid surface due to the upward flow of the processing liquid, and thus suppresses the generation of bubbles.
【００２７】[0027]
【効果】以上説明したごとく、本発明に係るフルディッ
プ式電着塗装装置においては、ワークの入槽時にワーク
から処理液中に舞い上った鉄粉等、すなわち前処理装置
では完全に除去できずにワーク中に残留し或いはワーク
に再付着した鉄粉等は、舟型処理槽内の処理液に水平に
全没して入槽が完了したワークの前端近傍位置を通る横
断面よりもオーバーヘッドコンベヤの進行方向後方の領
域にある舟型処理槽内の処理液の表層流によって、ワー
クから引き離されてオーバーヘッドコンベヤの進行方向
後方へ運ばれ、舟型処理槽の後方端において、一部は表
層流の一部と共に堰を越えてサブタンクへ流入し舟型処
理槽から除去され、他の一部は循環流と共に槽底に向か
って降下する。前記横断面よりもオーバーヘッドコンベ
ヤの進行方向後方に於いて前記横断面に沿って上方に向
かう処理液の流れにより、ワークの入槽時にワークから
処理液中に舞い上った鉄粉等が直ぐに降下する事態が阻
止され、ひいては鉄粉等のワークへの再付着が阻止され
る。前記横断面よりもオーバーヘッドコンベヤの進行方
向前方の領域にワークが進入する頃から、ワークと舟型
処理槽内に配設された電極との間に電流が流され、ワー
クが塗装される。前記横断面よりもオーバーヘッドコン
ベヤの進行方向前方の領域にある処理液と前記横断面よ
りもオーバーヘッドコンベヤの進行方向後方の領域にあ
る処理液とには、それぞれ別個の循環流が形成されてい
るので、前記横断面よりもオーバーヘッドコンベヤの進
行方向後方の領域にある処理液中に含まれる鉄粉等が前
記横断面よりもオーバーヘッドコンベヤの進行方向前方
の領域にある処理液中に混入するおそれは無い。ワーク
の出槽時に発生する落下液等による気泡は、前記横断面
よりもオーバーヘッドコンベヤの進行方向前方の領域に
ある処理液の表層流の一部と共に、舟型処理槽の前方端
において、堰を越えてサブタンクへ流入し、舟型処理槽
から除去される。[Effect] As described above, in the full-dip type electrodeposition coating apparatus according to the present invention, iron powder or the like that has floated up from the work into the processing liquid when the work enters the tank, that is, can be completely removed by the pretreatment apparatus. Iron powder that remains in the work or reattaches to the work is completely submerged horizontally in the processing liquid in the boat-type processing tank and is more overhead than the cross section passing through the position near the front end of the work where the tank is completed. The superficial flow of the processing liquid in the boat-shaped processing tank in the area behind the conveyor moves away from the work and conveys it to the rear in the traveling direction of the overhead conveyor. Along with a part of the flow, it flows over the weir into the sub-tank and is removed from the boat-type treatment tank, and another part descends together with the circulating flow toward the bottom of the tank. Due to the flow of the processing liquid upward along the horizontal cross section in the traveling direction of the overhead conveyor with respect to the horizontal cross section, iron powder and the like rising from the work into the processing liquid immediately descends when the workpiece enters the tank. This prevents the re-adhesion of iron powder or the like to the work. An electric current is applied between the work and the electrode arranged in the boat-shaped processing tank from the time when the work enters the area in front of the cross section in the traveling direction of the overhead conveyor, and the work is painted. Since the treatment liquid in the region in the forward direction of the overhead conveyor with respect to the cross section and the treatment liquid in the region in the backward direction of the overhead conveyor with respect to the cross section have separate circulation flows, respectively. , There is no possibility that iron powder or the like contained in the processing liquid in the area behind the overhead conveyor in the advancing direction with respect to the cross section will be mixed in the processing liquid in the area in the advancing direction of the overhead conveyor with respect to the cross section. . Bubbles due to the falling liquid generated when the work is discharged from the weir at the front end of the boat-shaped processing tank, together with a part of the surface layer flow of the processing solution in the area in front of the cross section in the traveling direction of the overhead conveyor. It flows over to the sub-tank and is removed from the boat-type processing tank.
【００２８】本発明に係るフルディップ式前処理装置に
おいては、ワークの入槽時にワークから処理液中に舞い
上った鉄粉等は、舟型処理槽内の処理液の表層流によっ
て、ワークから引き離されてオーバーヘッドコンベヤの
進行方向後方へ運ばれ、舟型処理槽の後方端において、
一部は表層流の一部と共に堰を越えてサブタンクへ流入
し舟型処理槽から除去され、他の一部は循環流と共に槽
底に向かって降下する。前記横断面よりもオーバーヘッ
ドコンベヤの進行方向後方に於いて前記横断面に沿って
上方に向かう処理液の流れにより、ワークの入槽時にワ
ークから処理液中に舞い上った鉄粉等が直ぐに降下する
事態が阻止され、ひいては鉄粉等のワークへの再付着が
阻止される。従って、本発明により、ハンガーを有する
オーバーヘッドコンベヤと舟型処理槽とを備えるフルデ
ィップ式電着塗装装置及び前処理装置であって、ワーク
が舟型処理槽に入槽する時にワークに流入する処理液に
よって舞い上げられた鉄粉等を、ワークに再付着する前
に槽外に排出する手段を備える装置が提供される。In the full-dip type pretreatment apparatus according to the present invention, iron powder or the like rising up from the work into the treatment liquid at the time of entering the work is caused by the surface layer flow of the treatment liquid in the boat-shaped treatment tank. Is carried away to the rear in the traveling direction of the overhead conveyor, and at the rear end of the boat-shaped processing tank,
A part of the surface layer flows over the weir together with the part of the weir into the sub-tank and is removed from the boat type treatment tank, and the other part descends with the circulation flow toward the bottom of the tank. Due to the flow of the processing liquid upward along the horizontal cross section in the traveling direction of the overhead conveyor with respect to the horizontal cross section, iron powder and the like rising from the work into the processing liquid immediately descends when the workpiece enters the tank. This prevents the re-adhesion of iron powder or the like to the work. Therefore, according to the present invention, there is provided a full-dip type electrodeposition coating apparatus and a pretreatment apparatus including an overhead conveyor having a hanger and a boat-shaped processing tank, wherein the workpiece flows into the boat-shaped processing tank when the workpiece enters the tank. There is provided an apparatus including means for discharging iron powder or the like that has been floated up by a liquid to the outside of a tank before reattaching to a work.
【図１】本発明の第１実施例に係る電着塗装装置の全体
構成を示す側面図である。FIG. 1 is a side view showing the overall configuration of an electrodeposition coating apparatus according to a first embodiment of the present invention.
【図２】図１のＩＩ−ＩＩ矢視図である。FIG. 2 is a view taken along the line II-II of FIG.
【図３】本発明の第２実施例に係る電着塗装装置の全体
構成を示す側面図である。FIG. 3 is a side view showing an overall configuration of an electrodeposition coating apparatus according to a second embodiment of the present invention.
【図４】図３のＩＶ−ＩＶ矢視図である。FIG. 4 is a view taken along the line IV-IV in FIG.
【図５】本発明の実施例に係る前処理装置の一つである
脱脂装置の全体構成を示す側面図である。FIG. 5 is a side view showing the overall configuration of a degreasing device which is one of the pretreatment devices according to the embodiment of the present invention.
【図６】図５のＶＩ−ＶＩ矢視図である。6 is a VI-VI arrow view of FIG.
【図７】従来構造の電着塗装装置の全体構成を示す側面
図である。FIG. 7 is a side view showing an overall configuration of a conventional electrodeposition coating apparatus.
【図８】従来構造の前処理装置の全体構成を示す側面図
である。FIG. 8 is a side view showing an overall configuration of a pretreatment device having a conventional structure.
１ オーバーヘッドコンベヤ
２ 舟型処理槽
３ａ 前方サブタンク
３ｂ 後方サブタンク
４ａ、４ｂ、４ｃ、４ｄ、４ｅ、４ｆ 処理液噴射ノズ
ル
５ 邪魔板
６ａ、６ｂ 循環ポンプ
７ａ、７ｂ フィルター
８ 鉄粉除去装置
９ 押え板
１０ａ、１０ｂ、１０ｃ 処理液噴射ノズル
Ａ 乗用車ボデー
Ｂ 横断面
Ｃ、Ｄ 循環流
１１ オーバーヘッドコンベヤ
１２ 舟型処理槽
１３ｂ 後方サブタンク
１４ｂ、１４ｄ、１４ｆ 処理液噴射ノズル
１６ｂ 循環ポンプ
１７ｂ フィルター
１８ 鉄粉除去装置
ＡＡ 乗用車ボデー
ＢＢ 横断面
ＤＤ 循環流
ＤＤＤ 部分循環流1 Overhead Conveyor 2 Boat Type Processing Tank 3a Front Sub-Tank 3b Rear Sub-Tank 4a, 4b, 4c, 4d, 4e, 4f Treatment Liquid Injection Nozzle 5 Baffle Plates 6a, 6b Circulation Pumps 7a, 7b Filter 8 Iron Powder Removal Device 9 Holding Plate 10a 10b, 10c Treatment liquid injection nozzle A Passenger car body B Cross section C, D Circulation flow 11 Overhead conveyor 12 Boat type processing tank 13b Rear sub-tanks 14b, 14d, 14f Treatment liquid injection nozzle 16b Circulation pump 17b Filter 18 Iron powder removing device AA Passenger car body BB Cross section DD Circulation flow DDD Partial circulation flow
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C25D 13/22 302 C25D 13/00 301 C25D 13/24 301 C25D 13/24 304 Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) C25D 13/22 302 C25D 13/00 301 C25D 13/24 301 C25D 13/24 304
Claims (21)
ヤと、舟型処理槽とを備え、舟型処理槽の底壁には、オ
ーバーヘッドコンベヤの進行方向後方に後方傾斜部が形
成され、オーバーヘッドコンベヤの進行方向前方に前方
傾斜部が形成され、後方傾斜部と前方傾斜部との間に水
平部が形成されたフルディップ式電着塗装装置におい
て、舟型処理槽内の処理液に水平に全没して入槽が完了
したワークの前端近傍位置を通る横断面に沿う上向きの
処理液の流れを、前記横断面よりもオーバーヘッドコン
ベヤの進行方向前方と前記横断面よりもオーバーヘッド
コンベヤの進行方向後方とに発生させる手段と、前記横
断面よりもオーバーヘッドコンベヤの進行方向前方の領
域にある舟型処理槽内の処理液を、舟型処理槽の側面か
ら見て表層流がオーバーヘッドコンベヤの進行方向前方
に向かうように循環させる手段と、前記横断面よりもオ
ーバーヘッドコンベヤの進行方向後方の領域にある舟型
処理槽内の処理液を、舟型処理槽の側面から見て表層流
がオーバーヘッドコンベヤの進行方向後方に向かうよう
に循環させる手段と、舟型処理槽のオーバーヘッドコン
ベヤの進行方向前方端と後方端とにそれぞれ堰を介して
連設されたサブタンクと、サブタンクに流入した表層の
処理液を除塵し舟型処理槽に還流させる手段とを備える
ことを特徴とするフルディップ式電着塗装装置。1. An overhead conveyor having a hanger and a boat-shaped processing tank, wherein a rearward slope portion is formed in a bottom wall of the boat-shaped processing tank at a rear side in a traveling direction of the overhead conveyor, and a front side in a traveling direction of the overhead conveyor. In a full-dip type electrodeposition coating apparatus in which a front inclined part is formed and a horizontal part is formed between the rear inclined part and the front inclined part, it is completely submerged horizontally into the processing liquid in the boat-type processing tank. An upward flow of the processing liquid along a cross section passing through the position near the front end of the work in which the tank is completed is generated forward of the overhead conveyor in the advancing direction of the cross section and behind the overhead conveyor in the advancing direction of the overhead conveyor. Means and the processing liquid in the boat-shaped processing tank in the area in front of the transverse section in the traveling direction of the overhead conveyor, the superficial flow is excessive when viewed from the side of the boat-shaped processing tank. -Means for circulating the head conveyor toward the front in the traveling direction, and the treatment liquid in the boat-shaped treatment tank in the region behind the cross section in the traveling direction of the overhead conveyor, when viewed from the side of the boat-shaped treatment tank. Means to circulate so as to go backward in the traveling direction of the overhead conveyor, a sub-tank continuously connected via a weir to the front end and the rear end in the traveling direction of the overhead conveyor of the boat type processing tank, and the surface layer flowing into the sub-tank. Means for removing the treatment liquid of (1) and returning it to a boat-type treatment tank.
成された吸引口と、吸引口から吸引された処理液を除塵
し舟型処理槽に還流させる手段とを備えることを特徴と
する請求項１に記載のフルディップ式電着塗装装置。2. A suction port formed at the lower end of the rearwardly inclined portion of the bottom wall of the boat-shaped processing tank, and means for removing the processing liquid sucked from the suction port and returning it to the boat-shaped processing tank. The full-dip type electrodeposition coating apparatus according to claim 1.
塵し舟型処理槽に還流させる前記手段は、舟型処理槽の
オーバーヘッドコンベヤの進行方向前方端に連設された
サブタンクに流入した処理液を除塵して前記横断面より
もオーバーヘッドコンベヤの進行方向後方の領域に還流
させ、舟型処理槽のオーバーヘッドコンベヤの進行方向
後方端に連設されたサブタンクに流入した処理液を除塵
して前記横断面よりもオーバーヘッドコンベヤの進行方
向前方の領域に還流させる手段であることを特徴とする
請求項１に記載のフルディップ式電着塗装装置。3. The means for removing the surface treatment liquid flowing into the sub-tank and returning it to the boat-type treatment tank is a treatment liquid flowing into a sub-tank connected to the forward end of the boat-type treatment tank in the traveling direction of the overhead conveyor. Of the processing liquid flowing into a sub-tank continuously connected to the rear end of the boat-type processing tank in the traveling direction of the overhead conveyor to remove the processing liquid from the cross section and recirculate to the crossing direction. 2. The full-dip type electrodeposition coating apparatus according to claim 1, which is a means for returning the fluid to a region in front of the surface in the traveling direction of the overhead conveyor.
引口から吸引された処理液とを除塵し舟型処理槽に還流
させる前記手段は、舟型処理槽のオーバーヘッドコンベ
ヤの進行方向前方端に連設されたサブタンクに流入した
処理液を除塵して前記横断面よりもオーバーヘッドコン
ベヤの進行方向後方の領域に還流させ、舟型処理槽のオ
ーバーヘッドコンベヤの進行方向後方端に連設されたサ
ブタンクに流入した処理液と吸引口から吸引された処理
液とを除塵して前記横断面よりもオーバーヘッドコンベ
ヤの進行方向前方の領域に還流させる手段であることを
特徴とする請求項２に記載のフルディップ式電着塗装装
置。4. The means for removing the surface layer processing liquid flowing into the sub-tank and the processing liquid sucked from the suction port and returning it to the boat type processing tank is provided at the front end of the boat type processing tank in the traveling direction of the overhead conveyor. The processing liquid that has flowed into the subtanks that are connected to each other is dedusted and returned to a region behind the horizontal cross section in the moving direction of the overhead conveyor, and is then connected to the subtank that is connected to the rear end of the boat-type processing tank in the moving direction of the overhead conveyor. 3. The full dip according to claim 2, which is means for removing the inflowing processing liquid and the processing liquid sucked from the suction port and returning the dust to a region in front of the cross section in the traveling direction of the overhead conveyor. Type electrodeposition coating equipment.
ヤと、舟型処理槽とを備え、舟型処理槽の底壁には、オ
ーバーヘッドコンベヤの進行方向後方に後方傾斜部が形
成され、オーバーヘッドコンベヤの進行方向前方に前方
傾斜部が形成され、後方傾斜部と前方傾斜部との間に水
平部が形成されたフルディップ式電着塗装装置におい
て、舟型処理槽内の処理液に水平に全没して入槽が完了
したワークの前端近傍位置を通る横断面に隣接して、前
記横断面よりもオーバーヘッドコンベヤの進行方向前方
の舟型処理槽底部と前記横断面よりもオーバーヘッドコ
ンベヤの進行方向後方の舟型処理槽底部とに配設され、
上方に差し向けられた処理液噴射ノズルと、前記横断面
よりもオーバーヘッドコンベヤの進行方向前方の領域に
おいて舟型処理槽上側部に配設されオーバーヘッドコン
ベヤの進行方向斜め前方に且つ水平に差し向けられた処
理液噴射ノズルと、前記横断面よりもオーバーヘッドコ
ンベヤの進行方向前方の領域において傾斜部も含む舟型
処理槽底部に配設されオーバーヘッドコンベヤの進行方
向後方に且つ舟型処理槽底壁に向かって下方に差し向け
られた処理液噴射ノズルと、前記横断面よりもオーバー
ヘッドコンベヤの進行方向後方の領域において舟型処理
槽上側部に配設されオーバーヘッドコンベヤの進行方向
斜め後方に且つ水平に差し向けられた処理液噴射ノズル
と、前記横断面よりもオーバーヘッドコンベヤの進行方
向後方の領域において傾斜部も含む舟型処理槽底部に配
設されオーバーヘッドコンベヤの進行方向前方に且つ舟
型処理槽底壁に向かって下方に差し向けられた処理液噴
射ノズルと、舟型処理槽のオーバーヘッドコンベヤの進
行方向前方端と後方端とにそれぞれ堰を介して連設され
たサブタンクとを備え、サブタンクはポンプとフィルタ
ーとを介して処理液噴射ノズルに連結されていることを
特徴とするフルディップ式電着塗装装置。5. An overhead conveyor having a hanger and a boat-shaped treatment tank are provided, and a rear inclined portion is formed on a bottom wall of the boat-shaped treatment tank at a rear side in a traveling direction of the overhead conveyor, and a forward direction in a traveling direction of the overhead conveyor. In a full-dip type electrodeposition coating apparatus in which a front inclined part is formed and a horizontal part is formed between the rear inclined part and the front inclined part, it is completely submerged horizontally into the processing liquid in the boat-type processing tank. Adjacent to the cross-section passing through the position near the front end of the completed work, the boat-shaped processing tank bottom part in front of the cross-section in the traveling direction of the overhead conveyor and the boat-shaped processing tank bottom part in the traveling direction of the overhead conveyor from the cross-section. It is arranged at the bottom of the processing tank,
The treatment liquid jet nozzle directed upward, and disposed in an upper portion of the boat-shaped treatment tank in a region forward of the overhead conveyor in the advancing direction of the overhead conveyor, and is directed obliquely forward and horizontally in the advancing direction of the overhead conveyor. And the treatment liquid injection nozzle, and is disposed at the bottom of the boat-shaped processing tank including the inclined portion in the region in front of the overhead conveyor in the traveling direction of the overhead conveyor. And a processing liquid jet nozzle directed downwards, and is disposed above the boat-shaped processing tank in a region rearward of the overhead conveyor in the traveling direction of the overhead conveyor, and is directed diagonally rearward and horizontally in the traveling direction of the overhead conveyor. The treated liquid injection nozzle and the area behind the cross section in the advancing direction of the overhead conveyor. And a processing liquid injection nozzle that is disposed at the bottom of the boat-shaped processing tank and is directed forward in the traveling direction of the overhead conveyor and downward toward the bottom wall of the boat-shaped processing tank, and the overhead conveyor of the boat-shaped processing tank. A full-dip type characterized in that it is provided with a sub-tank continuously connected to the front end and the rear end in the traveling direction of each via a weir, and the sub-tank is connected to the treatment liquid injection nozzle via a pump and a filter. Electro-deposition coating equipment.
板状の押え板を備え、前記押え板は、舟型処理槽の側面
から見て下面中央部を前記横断面が通るように位置決め
され、下面を処理液の表面に当接させて配設されている
ことを特徴とする請求項５に記載のに記載のフルディッ
プ式電着塗装装置。6. The hanger is a C-shaped hanger, and is provided with a flat plate-like holding plate, and the holding plate is positioned so that the cross section passes through a central portion of the lower surface when viewed from the side surface of the boat-shaped processing tank. The full-dip type electrodeposition coating apparatus according to claim 5, wherein the lower surface is disposed so as to contact the surface of the processing liquid.
型処理槽の側面から見て下面中央部が下方に山型に突出
する押え板を備え、前記押え板は、舟型処理槽の側面か
ら見て下面中央部を前記横断面が通るように位置決めさ
れ、下面を処理液の表面に当接させて配設されているこ
とを特徴とする請求項５に記載のフルディップ式電着塗
装装置。7. The hanger is a C-shaped hanger, and includes a holding plate whose center portion on the lower surface projects downward in a mountain shape when viewed from the side of the boat-shaped processing tank, and the holding plate is a side surface of the boat-shaped processing tank. 6. The full-dip type electrodeposition coating according to claim 5, wherein the central portion of the lower surface is positioned so that the cross section passes through, and the lower surface is disposed so as to contact the surface of the processing liquid. apparatus.
よりもオーバーヘッドコンベヤの進行方向前方位置に、
オーバーヘッドコンベヤの進行方向前方に且つ水平に差
し向けられた処理液噴射ノズルが取り付けられ、前記下
面中央部よりもオーバーヘッドコンベヤの進行方向後方
位置に、オーバーヘッドコンベヤの進行方向後方に且つ
水平に差し向けられた処理液噴射ノズルが取り付けら
れ、前記処理液噴射ノズルには、前記ポンプとフィルタ
ーとを経由した処理液が供給されることを特徴とする請
求項６又は７に記載のフルディップ式電着塗装装置。8. The lower surface of the holding plate is located at a position forward of the center of the lower surface in the traveling direction of the overhead conveyor.
A processing liquid jet nozzle that is directed horizontally and horizontally in the direction of travel of the overhead conveyor is attached, and is directed rearward and horizontally in the direction of travel of the overhead conveyor at a position that is behind the center of the lower surface in the direction of travel of the overhead conveyor. 8. A full-dip type electrodeposition coating according to claim 6 or 7, wherein a treatment liquid injection nozzle is attached, and the treatment liquid injection nozzle is supplied with the treatment liquid via the pump and the filter. apparatus.
よりもオーバーヘッドコンベヤの進行方向後方位置に、
オーバーヘッドコンベヤの進行方向後方下方に差し向け
られた処理液噴射ノズルが取り付けられ、前記処理液噴
射ノズルには、前記ポンプとフィルターとを経由した処
理液が供給されることを特徴とする請求項６乃至８の何
れか１項に記載のフルディップ式電着塗装装置。9. The lower surface of the holding plate is located at a position rearward of the central portion of the lower surface in the traveling direction of the overhead conveyor.
7. A processing liquid injection nozzle directed downward and rearward in the traveling direction of the overhead conveyor is attached, and the processing liquid injection nozzle is supplied with the processing liquid via the pump and the filter. 9. The full-dip type electrodeposition coating apparatus according to any one of 1 to 8.
の進行方向前方端に連設された前記サブタンクは、前記
横断面よりもオーバーヘッドコンベヤの進行方向後方の
領域内に配設された処理液噴射ノズルに連結され、舟型
処理槽のオーバーヘッドコンベヤの進行方向後方端に連
設された前記サブタンクは、前記横断面よりもオーバー
ヘッドコンベヤの進行方向前方の領域内に配設された処
理液噴射ノズルに連結されていることを特徴とする請求
項５乃至９の何れか１項に記載のフルディップ式電着塗
装装置。10. The processing tank of the boat type processing tank, wherein the sub-tank connected to the front end of the overhead conveyor in the advancing direction is a processing liquid injection nozzle disposed in a region rearward of the cross section in the advancing direction of the overhead conveyor. The sub-tank, which is connected and is continuously provided at the rear end of the overhead conveyor in the traveling direction of the boat-type processing tank, is connected to the processing liquid injection nozzle disposed in the region in front of the cross section in the traveling direction of the overhead conveyor. The full-dip type electrodeposition coating apparatus according to any one of claims 5 to 9, wherein
の進行方向後方端に連設されたサブタンクは、更に鉄粉
除去装置を介して処理液噴射ノズルに連結されているこ
とを特徴とする請求項５乃至１０の何れか１項に記載の
フルディップ式電着塗装装置。11. The sub-tank connected to the rear end in the traveling direction of the overhead conveyor of the boat type processing tank is further connected to a processing liquid injection nozzle via an iron powder removing device. 11. A full-dip type electrodeposition coating apparatus according to any one of items 1 to 10.
形成された吸引口を備え、吸引口はポンプとフィルター
とを介して処理液噴射ノズルに連結されていることを特
徴とする請求項５乃至９の何れか１項に記載のフルディ
ップ式電着塗装装置。12. A boat-type processing tank is provided with a suction port formed at a lower end of a rearwardly inclined portion of a bottom wall thereof, and the suction port is connected to a processing liquid injection nozzle via a pump and a filter. The full-dip type electrodeposition coating apparatus according to any one of claims 5 to 9.
の進行方向前方端に連設された前記サブタンクは、前記
横断面よりもオーバーヘッドコンベヤの進行方向後方の
領域内に配設された処理液噴射ノズルに連結され、舟型
処理槽のオーバーヘッドコンベヤの進行方向後方端に連
設されたサブタンクと吸引口とは、前記横断面よりもオ
ーバーヘッドコンベヤの進行方向前方の領域内に配設さ
れた処理液噴射ノズルに連結されていることを特徴とす
る請求項１２に記載のフルディップ式電着塗装装置。13. The sub-tank connected to the front end of the overhead conveyor of the boat type processing tank in the advancing direction is a processing liquid jet nozzle disposed in a region rearward of the cross section in the advancing direction of the overhead conveyor. The sub-tank and the suction port, which are connected to each other and are continuously provided at the rear end in the traveling direction of the overhead conveyor of the boat-type processing tank, have a treatment liquid injection nozzle arranged in a region in front of the transverse direction in the traveling direction of the overhead conveyor. The full-dip type electrodeposition coating apparatus according to claim 12, wherein the full-dip type electrodeposition coating apparatus is connected to the.
の進行方向後方端に連設されたサブタンクと吸引口と
は、更に鉄粉除去装置を介してに処理液噴射ノズルに連
結されていることを特徴とする請求項１２又は１３に記
載のフルディップ式電着塗装装置。14. A sub-tank and a suction port, which are connected to the rear end of the overhead conveyor of the boat-type processing tank in the traveling direction, are further connected to a processing liquid injection nozzle via an iron powder removing device. The full-dip type electrodeposition coating apparatus according to claim 12 or 13.
りもオーバーヘッドコンベヤの進行方向前方の舟型処理
槽底部と前記横断面よりもオーバーヘッドコンベヤの進
行方向後方の舟型処理槽底部とに配設され、上方に差し
向けられた処理液噴射ノズルと舟型処理槽底壁との間に
邪魔板が配設されていることを特徴とする請求項５乃至
１４の何れか１項に記載のフルディップ式電着塗装装
置。15. Adjacent to the cross section, a boat-shaped processing tank bottom portion in front of the cross section in the traveling direction of the overhead conveyor and a boat processing tank bottom portion in the traveling direction of the overhead conveyor behind the cross section. 15. The baffle plate is provided between the processing liquid jetting nozzle and the bottom wall of the boat-shaped processing tank, which are provided and directed upward, and the baffle plate is provided in any one of claims 5 to 14. Full dip type electrodeposition coating equipment.
ベヤと、舟型処理槽とを備え、舟型処理槽の底壁には、
オーバーヘッドコンベヤの進行方向後方に後方傾斜部が
形成され、オーバーヘッドコンベヤの進行方向前方に前
方傾斜部が形成され、後方傾斜部と前方傾斜部との間に
水平部が形成されたフルディップ式前処理装置におい
て、舟型処理槽内の処理液に水平に全没して入槽が完了
したワークの前端近傍位置を通る横断面に沿う上向きの
処理液の流れを、前記横断面よりもオーバーヘッドコン
ベヤの進行方向後方で発生させる手段と、舟型処理槽内
の処理液を、舟型処理槽の側面から見て表層流がオーバ
ーヘッドコンベヤの進行方向後方に向かうように循環さ
せる手段と、舟型処理槽のオーバーヘッドコンベヤの進
行方向後方端に堰を介して連設されたサブタンクと、サ
ブタンクに流入した表層の処理液を除塵し舟型処理槽に
還流させる手段とを備えることを特徴とするフルディッ
プ式前処理装置。16. An overhead conveyor having a hanger and a boat-shaped treatment tank, wherein the bottom wall of the boat-shaped treatment tank comprises:
A full-dip pretreatment in which a rear slope is formed behind the overhead conveyor in the traveling direction, a front slope is formed in the front in the traveling direction of the overhead conveyor, and a horizontal part is formed between the rear slope and the front slope. In the device, the flow of the upward processing liquid along the cross section passing through the vicinity of the front end of the workpiece that is completely submerged in the processing liquid in the boat-shaped processing tank and the tank is completed, A means for generating the treatment liquid in the boat-shaped treatment tank so as to circulate the treatment liquid in the boat-shaped treatment tank so that the superficial flow is directed toward the rear in the movement direction of the overhead conveyor, and the boat-shaped treatment tank. The sub-tank is connected to the rear end of the overhead conveyor in the traveling direction via a weir, and a means for removing the surface treatment liquid flowing into the sub-tank and returning it to the boat-type treatment tank. Full dip pretreatment and wherein the obtaining.
形成された吸引口と、吸引口から吸引された処理液とを
除塵し舟型処理槽に還流させる手段とを備えることを特
徴とする請求項１６に記載のフルディップ式前処理装
置。17. A suction port formed at the lower end of the forward inclined portion of the bottom wall of the boat-shaped processing tank, and means for removing the processing liquid sucked from the suction port and returning it to the boat-shaped processing tank. 17. The full-dip type pretreatment device according to claim 16.
ベヤと、舟型処理槽とを備え、舟型処理槽の底壁には、
オーバーヘッドコンベヤの進行方向後方に後方傾斜部が
形成され、オーバーヘッドコンベヤの進行方向前方に前
方傾斜部が形成され、後方傾斜部と前方傾斜部との間に
水平部が形成されたフルディップ式前処理装置におい
て、舟型処理槽内の処理液に水平に全没して入槽が完了
したワークの前端近傍位置を通る横断面に隣接して、前
記横断面よりもオーバーヘッドコンベヤの進行方向後方
の舟型処理槽底部に配設され、上方に差し向けられた処
理液噴射ノズルと、舟型処理槽上側部に配設されオーバ
ーヘッドコンベヤの進行方向斜め後方に且つ水平に差し
向けられた処理液噴射ノズルと、傾斜部も含む舟型処理
槽底部に配設されオーバーヘッドコンベヤの進行方向前
方に且つ舟型処理槽底壁に平行に差し向けられた処理液
噴射ノズルと、舟型処理槽のオーバーヘッドコンベヤの
進行方向後方端に堰を介して連設されたサブタンクとを
備え、サブタンクは、ポンプとフィルターとを介して処
理液噴射ノズルに連結されていることを特徴とするフル
ディップ式前処理装置。18. An overhead conveyor having a hanger and a boat-shaped treatment tank, wherein the bottom wall of the boat-shaped treatment tank comprises:
A full-dip pretreatment in which a rear slope is formed behind the overhead conveyor in the traveling direction, a front slope is formed in the front in the traveling direction of the overhead conveyor, and a horizontal part is formed between the rear slope and the front slope. In the device, a boat located adjacent to the horizontal cross section passing through the vicinity of the front end of the workpiece, which is completely submerged in the processing liquid in the boat-shaped processing tank and has completed the tank, and is behind the horizontal cross section in the traveling direction of the overhead conveyor. A processing solution injection nozzle disposed at the bottom of the mold processing tank and directed upward, and a processing solution injection nozzle disposed at the upper part of the boat processing tank and directed obliquely rearward and horizontally in the traveling direction of the overhead conveyor. And a processing liquid injection nozzle which is disposed at the bottom of the boat-shaped processing tank including the inclined portion and is directed forward in the traveling direction of the overhead conveyor and parallel to the bottom wall of the boat-shaped processing tank, A full dip characterized by comprising a sub-tank continuously connected via a weir at the rear end in the traveling direction of the overhead conveyor of the processing tank, and the sub-tank being connected to the treatment liquid injection nozzle via a pump and a filter. Pretreatment equipment.
形成された吸引口を備え、吸引口は、ポンプとフィルタ
ーとを介して処理液噴射ノズルに連結されていることを
特徴とする請求項１８に記載のフルディップ式前処理装
置。19. A suction port formed at the lower end of the forward inclined portion of the bottom wall of the boat-shaped processing tank, wherein the suction port is connected to the processing liquid injection nozzle via a pump and a filter. The full dip type pretreatment device according to claim 18.
して処理液噴射ノズルに連結されていることを特徴とす
る請求項１８に記載のフルディップ式前処理装置。20. The full-dip type pretreatment device according to claim 18, wherein the sub-tank is further connected to the treatment liquid injection nozzle via an iron powder removing device.
去装置を介して処理液噴射ノズルに連結されていること
を特徴とする請求項１９に記載のフルディップ式前処理
装置。21. The full-dip type pretreatment device according to claim 19, wherein the sub-tank and the suction port are further connected to a treatment liquid injection nozzle via an iron powder removing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18348493A JP3366692B2 (en) | 1993-06-30 | 1993-06-30 | Full dip type electrodeposition coating equipment and pretreatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18348493A JP3366692B2 (en) | 1993-06-30 | 1993-06-30 | Full dip type electrodeposition coating equipment and pretreatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0718494A JPH0718494A (en) | 1995-01-20 |
| JP3366692B2 true JP3366692B2 (en) | 2003-01-14 |
Family
ID=16136624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18348493A Expired - Lifetime JP3366692B2 (en) | 1993-06-30 | 1993-06-30 | Full dip type electrodeposition coating equipment and pretreatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3366692B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3416122B2 (en) * | 2000-03-15 | 2003-06-16 | 株式会社大気社 | Immersion surface treatment apparatus and immersion surface treatment method |
| DE10251047A1 (en) * | 2002-11-02 | 2004-05-19 | Bayerische Motoren Werke Ag | Plant for treating, in particular for painting objects |
| DE10318933A1 (en) * | 2003-04-26 | 2004-11-18 | Basf Coatings Ag | Electro dip painting process and continuous system for its implementation |
| JP2007182616A (en) * | 2006-01-10 | 2007-07-19 | Kanto Auto Works Ltd | Dippinge surface treatment apparatus |
| JP4849605B2 (en) * | 2006-04-18 | 2012-01-11 | パーカーエンジニアリング株式会社 | Immersion type surface treatment equipment |
| JP2010058408A (en) * | 2008-09-04 | 2010-03-18 | Yokohama Rubber Co Ltd:The | Adhesion preventive application apparatus for sheet material |
| JP5775436B2 (en) * | 2011-11-30 | 2015-09-09 | 富士重工業株式会社 | Electrodeposition coating equipment |
| JP6849465B2 (en) * | 2017-02-09 | 2021-03-24 | トヨタ自動車株式会社 | Liquid tank processing equipment |
-
1993
- 1993-06-30 JP JP18348493A patent/JP3366692B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718494A (en) | 1995-01-20 |
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