JPH11188302A - Drying oven - Google Patents
Drying ovenInfo
- Publication number
- JPH11188302A JPH11188302A JP35900197A JP35900197A JPH11188302A JP H11188302 A JPH11188302 A JP H11188302A JP 35900197 A JP35900197 A JP 35900197A JP 35900197 A JP35900197 A JP 35900197A JP H11188302 A JPH11188302 A JP H11188302A
- Authority
- JP
- Japan
- Prior art keywords
- floor
- furnace
- slit
- dust
- cleaning liquid
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ワークをコンベア
で搬送しながら乾燥させるトンネル型の乾燥炉に関し、
特に塗膜を乾燥させる塗装用乾燥炉に用いて好適なもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel type drying furnace for drying a work while conveying it by a conveyor,
Particularly, it is suitable for use in a coating drying furnace for drying a coating film.
【０００２】[0002]
【従来の技術】自動車ボディなどの塗装ラインにおいて
は、コンベアの台車に被塗物となる自動車ボディを載せ
て搬送しながら塗装を行い、塗装終了後、被塗物を台車
ごと高温の乾燥炉に搬入して塗膜の焼付乾燥を行ってい
る。このように、台車ごと乾燥炉に搬入すれば、途中で
被塗物を載せ換える手間もなく、被塗物を搬送しながら
連続的に塗装し、乾燥させることができる。2. Description of the Related Art In a coating line for an automobile body or the like, an automobile body as an object to be coated is placed on a conveyor trolley to carry the coating while being conveyed. We carry in and bake and dry the coating film. In this way, if the entire carriage is carried into the drying furnace, it is possible to continuously apply and dry the article while transporting the article without the trouble of replacing the article on the way.
【０００３】 この場合に、被塗物を搬送するコンベア
の台車は、炉外から炉内に入り、再び炉外へ出ていくよ
うに走行し、乾燥炉の運転中は、室温の台車が次々と搬
入されて炉内の熱を奪い、その熱を炉外に持ち出すの
で、その分、熱効率が低くなり、ランニングコストが嵩
む。また、炉外を走行している間に台車に付着した塵埃
が炉内に持ち込まれ易いだけでなく、台車のローラや駆
動機構などの機械的可動部分が炉内に配設されているの
で炉内で塵埃が発生し易い。[0003] In this case, a truck of a conveyor for transporting an article to be coated enters the furnace from outside the furnace and travels out of the furnace again. During the operation of the drying furnace, the carts at room temperature are successively provided. Heat is taken in and the heat inside the furnace is taken out, and the heat is taken out of the furnace. As a result, the heat efficiency is reduced and the running cost is increased. Moreover, not only is the dust attached to the truck easy to be brought into the furnace while traveling outside the furnace, but also the mechanically movable parts such as the rollers and drive mechanism of the truck are arranged inside the furnace, Dust is likely to be generated inside.
【０００４】 このため、本出願人は、ワークを搬送す
るコンベアの機械的可動部分を炉外に配した乾燥炉を提
案した（特開平８−１５５３７２号公報参照）。このコ
ンベアは、ワークを載置する架台と、コンベアレール上
を走行するベースを、所要高さの支柱を介して上下に分
離して形成し、炉外床下にコンベアレールを敷設すると
共に、前記支柱を乾燥炉の床壁に形成したスリットから
炉内に貫装して前記架台に載置したワークを炉内で移動
できるようにしたものである。このようにすれば、炉内
にコンベアの機械的可動部分がないため、熱効率にも優
れ、また、機械的可動部分により塵埃が持ち込まれたり
発生することもない。[0004] For this reason, the present applicant has proposed a drying oven in which a mechanically movable portion of a conveyor for transporting a workpiece is disposed outside the oven (see Japanese Patent Application Laid-Open No. 8-155372). In this conveyor, a base on which a work is placed and a base running on the conveyor rail are formed vertically separated via a support having a required height, and the conveyor rail is laid under a furnace outer floor, and the support is provided. Is penetrated into a furnace through a slit formed in a floor wall of a drying furnace so that a workpiece placed on the gantry can be moved in the furnace. With this configuration, since there is no mechanically movable part of the conveyor in the furnace, the heat efficiency is excellent, and no dust is brought in or generated by the mechanically movable part.
【０００５】[0005]
【発明が解決しようとする課題】ところで、このよう
に、コンベアの機械的可動部分を炉外に配しても、乾燥
炉はその両端にワークを出し入れする出入口が形成され
ているため、ワークが出入口を通過するときなどに外気
と共に外気に含まれる微小な塵埃が炉内に持ち込まれ
る。また、乾燥炉内に吹き出される熱風はフィルタなど
の浄化装置を通過しているので清浄であるが、それでも
浄化装置で除去できなかった極めて小さな塵埃が炉内に
持ち込まれる。By the way, even if the mechanically movable part of the conveyor is arranged outside the furnace as described above, the drying furnace is provided with entrances for taking in and out the work at both ends thereof. When passing through an entrance or the like, fine dust contained in the outside air is brought into the furnace together with the outside air. The hot air blown into the drying furnace is clean because it passes through a purifying device such as a filter, but extremely small dust that cannot be removed by the purifying device is brought into the furnace.
【０００６】 そして、これらの塵埃は、極めて微小で
あるので、直接塗膜に付着しても塗膜に悪影響を与える
ことはないが、炉内に舞い上がったり床面に降り落ちた
りを繰り返している間に、塵埃が核となって炉内空気に
含まれる有機溶剤成分がその表面に凝集し、これらが互
いにくっついて粗大化し、次第に、塗膜に悪影響を与え
る程度の大きさに成長してしまう。[0006] Since these dusts are extremely minute, they do not adversely affect the coating film even if they adhere directly to the coating film, but they repeatedly fly up into the furnace or fall down to the floor. In the meantime, dust becomes a nucleus and organic solvent components contained in the furnace air agglomerate on the surface, and they adhere to each other, coarsen, and gradually grow to a size that adversely affects the coating film. .
【０００７】 特に最近では、炉内の前段側に設置され
る輻射加熱ゾーン（暗赤ゾーン）でも、その後段に設置
される対流加熱ゾーンでも、乾燥しにくいワークの下面
に向かって熱風を勢い良く吹き付ける熱風吹出ノズルを
設けたものがあり、このタイプの乾燥炉で乾燥させた場
合、通常の乾燥炉では舞い上がることのない大きな塵埃
まで舞い上がり、これが塗膜面に付着して塗装不良を起
こすという問題があった。[0007] In recent years, in both the radiant heating zone (dark red zone) installed in the front stage of the furnace and the convection heating zone installed in the subsequent stage, hot air is vigorously directed toward the lower surface of the work that is difficult to dry. Some types have a hot-air blowing nozzle that blows out.When dried in this type of drying furnace, large dust that does not fly up in a normal drying furnace will fly up, and this will adhere to the coating film surface and cause coating failure. was there.
【０００８】 このため、塗装不良を生じさせないよう
にするには、頻繁に炉内の清掃作業を行わなければなら
なかった。そして、この清掃作業は、例えば乾燥炉の運
転を停止した後に、細かい霧状の水またはアルカリ水を
噴霧して、床面を湿らせたのち、これを作業者がモップ
や雑巾で拭き取るという極めて原始的な作業を行ってお
り、非常に手間がかかり面倒であった。For this reason, in order to prevent the occurrence of coating defects, the inside of the furnace must be frequently cleaned. In this cleaning work, for example, after the operation of the drying furnace is stopped, fine mist water or alkaline water is sprayed to moisten the floor surface, and then the worker wipes the floor with a mop or a rag. He was doing primitive work and was very laborious and tedious.
【０００９】 そこで本発明は、炉内で塵埃が塗装不良
を起こす程度の大きさまで成長することを阻止すること
ができ、したがって、塵埃が塗膜に付着することに起因
する塗装不良を生ずることがなく、塗装品質の向上を図
ると共に、乾燥炉の清掃作業に要する手間と面倒を軽減
することを技術的課題としている。Accordingly, the present invention can prevent dust from growing in the furnace to such a size as to cause poor painting, and therefore, can cause poor painting due to dust adhering to the coating film. Instead, it is a technical task to improve the coating quality and to reduce the labor and trouble required for the cleaning operation of the drying furnace.
【００１０】[0010]
【課題を解決するための手段】この課題を解決するため
に、本発明は、ワークを搬送するコンベアがトンネル型
の炉本体に沿って配設され、前記コンベアは、ワークを
載置する架台が、炉本体の床下に敷設されたコンベアレ
ールを走行するベースに所要高さの支柱を介して取り付
けられると共に、当該支柱がその搬送方向に沿って炉本
体の床壁に形成されたスリットから炉本体に貫通されて
前記架台に載置したワークを炉内で移動させるようにな
された乾燥炉において、炉本体は、その床面が左右両側
から前記スリットに向かう下り勾配の傾斜面に形成さ
れ、当該スリットを形成する床壁の開口部左右両端縁に
は、床面に落ちた塵埃を床面を伝って流れ落ちる洗浄液
と共に回収する塵埃回収溝が並行に配設されたことを特
徴とする。In order to solve this problem, the present invention provides a conveyor for conveying a work, which is disposed along a tunnel-type furnace body, wherein the conveyor has a gantry on which the work is placed. Is attached to a base running on a conveyor rail laid under the floor of the furnace body via a column having a required height, and the column is formed through a slit formed in a floor wall of the furnace body along the transport direction. In a drying furnace which is configured to move a workpiece placed on the gantry through the furnace in the furnace, the furnace body has a floor surface formed on an inclined surface having a downward slope from both left and right sides toward the slit. Dust collecting grooves are provided in parallel on both left and right edges of the opening of the floor wall forming the slit to collect dust dropped on the floor surface together with the cleaning liquid flowing down the floor surface.
【００１１】 本発明によれば、例えば乾燥炉の運転を
停止した状態で、乾燥炉の床面に水やアルカリ水の洗浄
液を流せば、洗浄液は、左右両側から中央部のスリット
に向かう下り勾配の傾斜面に形成された床面を伝ってス
リットへ向かって流れて行く。そして、スリットを形成
する床壁の左右両端縁には、塵埃回収溝が配設されてい
るので、流れてきた洗浄液がスリットから炉外に流れ出
ることはなく、塵埃回収溝に流れ込む。したがって、乾
燥炉の床面に塵埃が堆積された凝集粗大化する前に、床
面に洗浄液を流すだけで、床面に溜まった塵埃が洗浄液
と共に塵埃回収溝内に流し込まれ、清掃作業は簡単に終
了する。According to the present invention, for example, when water or alkaline water cleaning liquid is allowed to flow on the floor of the drying furnace in a state in which the operation of the drying furnace is stopped, the cleaning liquid is inclined downward from both the left and right sides toward the central slit. It flows along the floor formed on the inclined surface toward the slit. Since the dust collecting grooves are provided on both left and right edges of the floor wall forming the slit, the flowing cleaning liquid does not flow out of the furnace from the slit but flows into the dust collecting groove. Therefore, before the dust accumulates on the floor surface of the drying furnace and becomes coarse, only the cleaning liquid is allowed to flow on the floor surface, and the dust collected on the floor surface flows into the dust collecting groove together with the cleaning liquid, making cleaning work easy. To end.
【００１２】 このとき、炉本体の左右側壁に沿って、
床面に洗浄液を流す洗浄液供給設備を設けておけば、当
該洗浄液供給設備から洗浄液を流出させるだけで足り、
作業者がホースなどで洗浄液を床面に流す作業も不要に
なる。また、洗浄液は塵埃回収溝に回収されるので、ス
リットの下に配設されている駆動チェーンなどのコンベ
アの機械的可動部分が水浸しになることもない。At this time, along the left and right side walls of the furnace body,
If a cleaning liquid supply facility for flowing the cleaning liquid is provided on the floor surface, it is sufficient to make the cleaning liquid flow out of the cleaning liquid supply facility,
It is not necessary for the operator to flow the cleaning liquid to the floor with a hose or the like. Further, since the cleaning liquid is collected in the dust collecting groove, the mechanically movable part of the conveyor such as the drive chain disposed below the slit is not flooded.
【００１３】 さらに、塵埃回収溝は、その上面開口部
の床面側の開口端縁を床面の高さ以下に形成し、スリッ
ト側の開口端縁を床面高さより高く形成すれば、洗浄液
が床面を勢い良く流れてくることがあっても、スリット
側の開口端縁がその流れを堰き止めるので、確実に塵埃
回収溝内に流し込むことができる。さらにまた、炉本体
の左右側壁の床面の近傍に配設した熱風吹出ノズルから
床面に沿ってその左右両側から前記スリットに向かう空
気流を形成し、塵埃回収溝に接続された排出管から排気
すれば、乾燥炉の運転をしながら、床面に落ちた塵埃
を、随時、塵埃回収溝に落とし込むことができる。[0013] Furthermore, the dust collection groove may be configured such that an opening edge on the floor surface side of the upper surface opening is formed at a height equal to or lower than the floor surface and an opening edge on the slit side is formed higher than the floor surface height. Even if the gas flows vigorously on the floor surface, the opening edge on the slit side blocks the flow, so that it can be reliably poured into the dust collecting groove. Furthermore, a hot air blowing nozzle arranged near the floor surface of the left and right side walls of the furnace body forms an airflow from the left and right sides thereof to the slits along the floor surface, from a discharge pipe connected to the dust collection groove. If the air is exhausted, dust falling on the floor can be dropped into the dust collecting groove as needed while operating the drying oven.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて具体的に説明する。図１は本発明に係る乾燥
炉の一例を示す正面図、図２は塵埃回収溝を示す正面
図、図３及び図４は塵埃回収溝の他の例を示す正面図及
び平面図である。なお、説明の便宜上、図１において中
心線を境に右側が輻射熱によりワークを乾燥する輻射加
熱ゾーン、左側が対流熱によりワークを乾燥する対流加
熱ゾーンを示す。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a front view showing an example of a drying furnace according to the present invention, FIG. 2 is a front view showing a dust collecting groove, and FIGS. 3 and 4 are a front view and a plan view showing another example of a dust collecting groove. For convenience of description, in FIG. 1, the right side of the center line is a radiant heating zone for drying the work by radiant heat, and the left side is a convective heating zone for drying the work by convective heat.
【００１５】 本例の乾燥炉１は、自動車ボディなどの
ワークＷをコンベア２で搬送しながら乾燥させるトンネ
ル型に形成され、その前段に輻射加熱ゾーン１Ａが形成
されると共に、その後段に対流加熱ゾーン１Ｂが形成さ
れている。そして、炉内を加熱するために、輻射加熱ゾ
ーン１Ａの左右両側には、２２０〜２３０℃前後の加熱
空気を循環させて輻射熱を放射する熱風循環ダクト１０
が配設され、対流加熱ゾーン１Ｂの左右両側には、１８
０℃前後の加熱空気を吹き出す熱風吹出ダクト１１が配
設されている。The drying furnace 1 of the present embodiment is formed in a tunnel type for drying a work W such as an automobile body while being conveyed by a conveyor 2, and a radiant heating zone 1A is formed in a preceding stage thereof, and convection heating is performed in a subsequent stage thereof. Zone 1B is formed. In order to heat the inside of the furnace, hot air circulation ducts 10 for circulating heated air at about 220 to 230 ° C. and radiating radiant heat are provided on both left and right sides of the radiant heating zone 1A.
Are disposed on both sides of the convection heating zone 1B.
A hot air blowing duct 11 for blowing out heated air at about 0 ° C. is provided.
【００１６】 コンベア２は、ワークＷを載置する架台
４が、炉本体３に沿ってその床下に形成されたコンベア
ピット５に敷設されたコンベアレール６上を駆動チェー
ンＣなどにより走行駆動されるベース７に、所要高さの
支柱８を介して取り付けられ、支柱８がその搬送方向に
沿って床壁３Ｆに形成されたスリット９から炉内に貫通
された状態で走行するように成されている。したがっ
て、架台４にワークＷを載せてコンベア２を走行させる
と、ベース７は炉外のコンベアピット５内を走行し、架
台４に載置されたワークＷは炉内を搬送される。なお、
コンベアピット５はコンベアレール６及びその駆動チェ
ーンＣなどを配設するために炉本体３の床下に形成した
溝状の空間であって、図１に示すように、乾燥炉１の床
壁３Ｆを設置面Ｇより高い位置に構築する場合に床壁３
Ｆと設置面Ｇの間に形成する場合に限らず、乾燥炉１の
床壁３Ｆを設置面Ｇと同じ高さに構築する場合に設置面
Ｇを掘って形成するものであってもよい。In the conveyor 2, a gantry 4 on which a workpiece W is placed is driven by a drive chain C or the like along a furnace main body 3 on a conveyor rail 6 laid on a conveyor pit 5 formed below the floor. The support 8 is attached to the base 7 via a support column 8 having a required height, and the support column 8 is configured to travel along the transport direction while penetrating the furnace through a slit 9 formed in the floor wall 3F. I have. Therefore, when the workpiece W is placed on the gantry 4 and the conveyor 2 is run, the base 7 travels in the conveyor pit 5 outside the furnace, and the work W placed on the gantry 4 is transported in the furnace. In addition,
The conveyor pit 5 is a groove-shaped space formed under the floor of the furnace main body 3 for arranging the conveyor rail 6 and its drive chain C, and as shown in FIG. When building at a position higher than the installation surface G, the floor wall 3
In addition to the case where the floor wall 3F of the drying furnace 1 is constructed at the same height as the installation surface G, the installation surface G may be formed by excavation.
【００１７】 炉本体３は、その天井壁３Ｕ，左右側壁
３Ｌ，３Ｒ，床壁３Ｆが断熱構造に形成され、床面３ｆ
は、左右両側からスリット９に向かう下り勾配の傾斜面
に形成されている。そして、左右側壁３Ｌ，３Ｒの床面
３ｆ近傍には、ワークＷの下面を乾燥させるために床面
３ｆに沿って左右両側から中央のスリット９に向かう空
気流を形成する熱風吹出ノズル１２が、炉本体３の長手
方向に沿って各ダクト１０，１１に所定間隔で開口形成
されると共に、床面３ｆに水やアルカリ水その他の洗浄
液を流下させる洗浄液供給管（洗浄液供給設備）１３が
配設されている。なお、洗浄液供給管１３は、床面３ｆ
に洗浄液を流下させるものに限らず、必要に応じて左右
側壁面に向けて洗浄液を噴霧するように設けてもよい。The furnace body 3 has a ceiling wall 3U, left and right side walls 3L, 3R, and a floor wall 3F formed in a heat insulating structure, and a floor surface 3f.
Are formed on a downwardly inclined surface facing the slit 9 from both left and right sides. In the vicinity of the floor surface 3f of the left and right side walls 3L and 3R, a hot air blowing nozzle 12 for forming an airflow from both right and left sides toward the center slit 9 along the floor surface 3f to dry the lower surface of the work W is provided. Openings are formed at predetermined intervals in each of the ducts 10 and 11 along the longitudinal direction of the furnace main body 3, and a cleaning liquid supply pipe (cleaning liquid supply equipment) 13 for flowing water, alkaline water, and other cleaning liquids down the floor 3f is provided. Have been. The cleaning liquid supply pipe 13 is provided on the floor 3f.
The cleaning liquid may be sprayed toward the left and right side walls as necessary.
【００１８】 なお、熱風吹出ノズル１２の正面には、
ディフューザ１４が配設されて、当該ノズル１２とディ
フューザ１４とでエゼクタ１５が形成され、ノズル１２
から吹き出された熱風がディフューザ１４ののど部を通
過するときに周囲の空気を吸い込んで、ノズル１２から
吹き出される風量以上の風量で空気を噴射するようにな
されている。In addition, in front of the hot air blowing nozzle 12,
A diffuser 14 is provided, and an ejector 15 is formed by the nozzle 12 and the diffuser 14.
When the hot air blown from the nozzle passes through the throat portion of the diffuser 14, the surrounding air is sucked in, and the air is blown at a flow rate larger than the flow rate blown out from the nozzle 12.
【００１９】 また、スリット９を形成する床壁３Ｆの
開口部左右両端縁には、床面３ｆに溜まった塵埃を当該
床面３ｆを伝って流れ落ちる洗浄液や空気流と共に回収
する塵埃回収溝１６が並行に配設されている。この塵埃
回収溝１６の上面開口部１７は、床面３ｆ側の開口端縁
１７ｆが床面３ｆの高さと等しいか、または、それより
低く形成されると共に、スリット９側の開口端縁１７ｓ
が床面３ｆの高さより高く形成されて堰を成している。Dust collecting grooves 16 for collecting dust collected on the floor 3f together with a cleaning liquid or an airflow flowing down the floor 3f are provided on both left and right edges of the opening of the floor wall 3F forming the slit 9. They are arranged in parallel. The upper surface opening 17 of the dust collecting groove 16 has an opening edge 17f on the floor surface 3f side equal to or lower than the height of the floor surface 3f and an opening edge 17s on the slit 9 side.
Are formed higher than the height of the floor surface 3f to form a weir.
【００２０】 塵埃回収溝１６には、前記洗浄液供給管
１３から床面３ｆに沿って流下される洗浄液や空気流と
共に塵埃を吸入して排出する排出管１８が接続され、当
該排出管１８は、洗浄液を吸引排出する排液管１９と、
空気を吸引する排気管２０に分岐されている。そして、
排液管１９には、洗浄液供給管１３に送給される洗浄液
の流量と同程度の吸入量で当該塵埃回収溝１６に流入し
た洗浄液を吸入する吸引ポンプ２１と、未使用時に当該
排液管１９を閉鎖するバルブ２２が介装されている。ま
た、排気管２０には、床面３ｆの傾斜に沿って流れる空
気流と共に塵埃を吸引する排気ファン２３と、未使用時
に当該排気管２３を閉鎖するダンパ２４と、フィルタ２
５が介装されている。The dust collection groove 16 is connected to a discharge pipe 18 that sucks and discharges dust along with a cleaning liquid or an air flow flowing down from the cleaning liquid supply pipe 13 along the floor surface 3f. A drain pipe 19 for sucking and discharging the cleaning liquid;
It is branched to an exhaust pipe 20 for sucking air. And
The drainage pipe 19 includes a suction pump 21 that sucks the cleaning liquid that has flowed into the dust collecting groove 16 at a suction amount substantially equal to the flow rate of the cleaning liquid supplied to the cleaning liquid supply pipe 13, and the drainage pipe that is not in use. A valve 22 for closing 19 is interposed. The exhaust pipe 20 has an exhaust fan 23 that sucks dust together with an airflow flowing along the inclination of the floor 3f, a damper 24 that closes the exhaust pipe 23 when not in use, and a filter 2 that
5 are interposed.
【００２１】 以上が本発明の一例構成であって、次に
その作用を説明する。まず、輻射加熱ゾーン１Ａの熱風
循環ダクト１０及び対流加熱ゾーン１Ｂの熱風吹出ダク
ト１１に熱風を供給して乾燥炉１を立ち上げ、次いで、
コンベア２を起動させてワークＷを搬送すると、ワーク
Ｗは輻射加熱ゾーン１Ａを通過するときは主として熱風
循環ダクト１０の輻射熱により、また、対流加熱ゾーン
１Ｂを通過するときは炉内に吹き出される熱風により加
熱されて乾燥される。The above is an example of the configuration of the present invention, and its operation will be described below. First, hot air is supplied to the hot air circulation duct 10 of the radiant heating zone 1A and the hot air blowing duct 11 of the convection heating zone 1B to start the drying furnace 1, and then,
When the conveyor 2 is started and the work W is transported, the work W is blown out mainly by the radiant heat of the hot air circulation duct 10 when passing through the radiant heating zone 1A and into the furnace when passing through the convective heating zone 1B. It is heated and dried by hot air.
【００２２】 また、これと同時に、各ゾーン１Ａ，１
Ｂの左右側壁３Ｌ，３Ｒに配設された熱風吹出ノズル１
２から熱風が吹き出されて、床面３ｆに沿って左右両側
から中央のスリット９に向かう空気流が形成され、ワー
クＷの下面が乾燥される。このとき、乾燥炉１の出入口
から流入する外気や、乾燥炉１内に吹き出される熱風に
含まれる微小な塵埃が炉内で舞っている間に、その表面
に炉内空気に含まれる有機溶剤成分が凝集し、これらが
互いにくっついて粗大化する。そして、自重により炉内
の床面３ｆに落ちると、熱風吹出ノズル１２により形成
された空気流によりスリット９に向かって吹き動かされ
る。ここで、排気管２０に介装された排気ファン２３を
稼動させておけば、塵埃は下り勾配の傾斜面に形成され
た床面３ｆをスリット９に向かってスムースに移動して
塵埃回収溝１６に吸い込まれ、排出管１８及びこれに連
通する排気管２０を通って外部に排出される。したがっ
て、炉内空気が清浄に維持されるので、塗装不良が減少
して、さらに、塗装品質を向上させることができる。ま
た、炉内の汚れも減少するので、頻繁に清掃作業を行う
必要がない。特に、従来２〜３週間に１回程度の割合で
行われていた乾燥炉１内の点検時には、天井面，左右側
壁面及び床面３ｆの全体清掃を行う必要がなくなり、ダ
クトなど部分清掃で足り、さらに、全体清掃は２〜３カ
月に１回程度行えば十分であるので、清掃作業に要する
労力を大幅に低減することができる。At the same time, each zone 1A, 1
Hot air blow-out nozzle 1 disposed on left and right side walls 3L, 3R of B
Hot air is blown out of the work 2 to form an airflow from both left and right sides to the center slit 9 along the floor 3f, and the lower surface of the work W is dried. At this time, while the outside air flowing in from the entrance and exit of the drying furnace 1 and the minute dust contained in the hot air blown into the drying furnace 1 are flying in the furnace, the organic solvent contained in the air in the furnace is formed on the surface thereof. The components agglomerate and stick together to coarsen. Then, when it falls on the floor 3f in the furnace by its own weight, it is blown toward the slit 9 by the air flow formed by the hot air blowing nozzle 12. Here, if the exhaust fan 23 interposed in the exhaust pipe 20 is operated, the dust moves smoothly on the floor 3 f formed on the downward slope toward the slit 9 and the dust collection groove 16 is formed. And is discharged to the outside through the discharge pipe 18 and the exhaust pipe 20 communicating therewith. Accordingly, since the air in the furnace is kept clean, coating defects are reduced, and the coating quality can be further improved. In addition, since dirt in the furnace is reduced, it is not necessary to frequently perform a cleaning operation. In particular, when inspecting the inside of the drying furnace 1 which has been performed about once every two to three weeks, it is not necessary to completely clean the ceiling surface, the left and right side wall surfaces and the floor surface 3f. Sufficiently, it is sufficient to perform the entire cleaning about once every two to three months, so that the labor required for the cleaning operation can be significantly reduced.
【００２３】 そして、２〜３カ月に１回の全体清掃を
行う場合は、乾燥炉１の運転を停止した状態で、洗浄液
供給管１３から洗浄液を流出させると共に、排液管１９
に介装されている吸引ポンプ２０を前記洗浄液の供給量
と同程度の排水能力で運転する。床面３ｆは左右両側か
らスリット９に向かう下り勾配の傾斜面で形成されてい
るので、洗浄液は床面３ｆを流下して床面３ｆ上に堆積
した塵埃を押し流しながらスリット９の手前で塵埃回収
溝１６に流れ込み、床面３ｆに溜まった塵埃は炉内で舞
い上がることなく洗浄液と共に排出管１８及び排液管１
９を介して排出される。このように、２〜３カ月に一回
程度行われる全体清掃の作業においても、床面３ｆは洗
浄液を流下させるだけで堆積した塵埃を清掃除去するこ
とができるので、左右側壁，天井面及びダクト類のみを
清掃すれば足り、その労力が著しく軽減される。When the entire cleaning is performed once every two to three months, the cleaning liquid is caused to flow out of the cleaning liquid supply pipe 13 and the drain pipe 19 while the operation of the drying furnace 1 is stopped.
Is operated with the same drainage capacity as the supply amount of the cleaning liquid. Since the floor surface 3f is formed as a downwardly sloping surface facing the slit 9 from both the left and right sides, the cleaning liquid flows down the floor surface 3f and pushes dust accumulated on the floor surface 3f while collecting dust in front of the slit 9. The dust that flows into the groove 16 and accumulates on the floor 3f is not sowed in the furnace and is discharged together with the cleaning liquid into the drain pipe 18 and the drain pipe 1.
Exhaust via 9. As described above, even in the entire cleaning operation performed about once every two to three months, the floor surface 3f can clean and remove the accumulated dust only by flowing down the cleaning liquid. Cleaning only the classes is sufficient, and the labor is significantly reduced.
【００２４】 なお、このとき、洗浄液はスリット９に
流入する前に塵埃回収溝１６に流れ込むので、飛沫がス
リット９から外部へ飛散する程度で、洗浄液が大量に溢
れ出ることはない。また、本例のように、塵埃回収溝１
６のスリット９側の開口端縁１７ｓを床面３ｆより高い
堰に形成すれは、床面３ｆを流下する洗浄液の流量を多
くしてスリット９に向かって勢い良く流れ込むときで
も、塵埃回収溝１６の開口端縁１７ｓに確実に堰き止め
られるので、決してスリット９からその下方に配設され
ているコンベア２に溢れ落ちることはない。このよう
に、本例では、洗浄液を流すだけで塵埃を除去すること
ができ、しかもコンベア２を濡らすこともない。At this time, since the cleaning liquid flows into the dust collecting groove 16 before flowing into the slit 9, the cleaning liquid does not overflow in a large amount as long as the splash is scattered to the outside from the slit 9. Also, as in this example, the dust collection groove 1
By forming the opening edge 17s on the side of the slit 9 on the side of the slit 9 higher than the floor 3f, the flow rate of the cleaning liquid flowing down the floor 3f is increased, and even when the cleaning liquid flows vigorously toward the slit 9, the dust collecting groove 16 is formed. Is reliably blocked by the opening edge 17s, so that it never overflows from the slit 9 to the conveyor 2 disposed therebelow. As described above, in this example, dust can be removed only by flowing the cleaning liquid, and the conveyor 2 does not get wet.
【００２５】 図３及び図４は塵埃回収溝１６の他の例
の正面図及び平面図を示し、本例では、スリット９を隔
てて対向する塵埃回収溝１６の開口端縁１７ｓに、開閉
可能な一対のフラップ３０Ｒ，３０Ｌが蝶番３１，３１
を介して取り付けられている。そして、フラップ３０
Ｒ，３０Ｌは、図３に示すように、先端３２が当接され
て閉じた状態で正面から見て山形に突き合わされてい
る。また、各フラップ３０Ｒ，３０Ｌの間に支柱８が進
入する進入側端縁３３Ｒ，３３Ｌは、図４に示すように
その上面から見て、根元３４側から先端３２側へ向かっ
て支柱８の進行方向に傾斜して形成されている。したが
って、フラップ３０Ｒ，３０Ｌが閉じているときに、支
柱８が進入してくると、支柱８が進入側端縁３３Ｒ，３
３Ｌを左右に押し広げながら移動するので、各フラップ
３０Ｒ，３０Ｌは自動的に開かれる。そして、支柱８が
通過し終わると、各フラップ３０Ｒ，３０Ｌはその自重
により、もしくは、バネ（図示せず）の弾性により自動
的に閉じる。なお、フラップ３０Ｒ，３０Ｌをゴム板や
樹脂板などで形成し、その根元側を塵埃回収溝１６の開
口端縁１７ｓに固定してもよい。この場合は、支柱８の
通過に伴い、各フラップ３０Ｒ，３０Ｌが撓んで押し開
かれ、また、支柱８が通過し終わると、各フラップ３０
Ｒ，３０Ｌはその弾性により自動的に閉じる。FIGS. 3 and 4 show a front view and a plan view of another example of the dust collecting groove 16. In this example, the dust collecting groove 16 can be opened and closed at the opening edge 17 s of the dust collecting groove 16 facing the slit 9. Pair of flaps 30R, 30L are hinges 31, 31
Attached through. And flap 30
As shown in FIG. 3, R and 30L abut each other in a mountain shape when viewed from the front with the tip 32 abutted and closed. Further, as shown in FIG. 4, the approach side edges 33R, 33L into which the support 8 enters between the flaps 30R, 30L advance from the base 34 toward the tip 32 as viewed from the upper surface thereof. It is formed to be inclined in the direction. Therefore, when the strut 8 enters while the flaps 30R, 30L are closed, the strut 8 is moved into the entry-side edges 33R, 3R.
Since each of the flaps 30R and 30L is automatically opened because the 3L is moved while being pushed and spread horizontally. When the support 8 has passed, the flaps 30R and 30L are automatically closed by their own weight or by the elasticity of a spring (not shown). The flaps 30R, 30L may be formed of a rubber plate, a resin plate, or the like, and the roots thereof may be fixed to the opening edge 17s of the dust collecting groove 16. In this case, each of the flaps 30R and 30L is bent and pushed open as the support 8 passes, and when the support 8 has passed, each of the flaps 30R and 30L is opened.
R, 30L closes automatically due to its elasticity.
【００２６】 このように本例では、支柱８が通過しな
ければ、フラップ３０Ｒ，３０Ｌが開かず、スリット９
の隙間が閉じられているので、洗浄液や空気流により塵
埃回収溝１６に落とし込まれる塵埃が、スリット９を通
過してその下に配設された駆動チェーンＣなどのコンベ
ア２の機械的可動部分に降りかかることがなく、また、
外気の進入や、炉内空気の漏洩を極力抑えることがで
き、したがって、炉内の熱効率が低下することもない。As described above, in this example, if the support 8 does not pass, the flaps 30R and 30L do not open and the slit 9
Is closed, the dust dropped into the dust collecting groove 16 by the cleaning liquid or the air flow passes through the slit 9 and is mechanically movable on the conveyor 2 such as the drive chain C disposed therebelow. Without falling to
Intrusion of outside air and leakage of air in the furnace can be suppressed as much as possible, so that the thermal efficiency in the furnace does not decrease.
【００２７】 なお、上述の説明では、炉内に洗浄液供
給管１３を配し、洗浄液を自動的に床面３ｆに流下させ
る場合について説明したが、もちろん、ノズルを先端に
つけた洗浄液ホースなどを用いて作業者が散水すること
により、洗浄液を床面３ｆに流下させるようにしてもよ
い。In the above description, the case where the cleaning liquid supply pipe 13 is disposed in the furnace and the cleaning liquid automatically flows down to the floor 3f has been described. However, it is needless to say that the cleaning liquid hose or the like having a nozzle at the tip is used. The cleaning liquid may be caused to flow down to the floor 3f by the worker spraying water.
【００２８】[0028]
【発明の効果】以上述べたように、本発明によれば、床
面に落ちた塵埃を洗浄液と共に塵埃回収溝内に流し込む
ことができるので、床面の清掃作業に要する労力を著し
く軽減することができ、しかも、乾燥炉の床面に落ちる
塵埃が塗装不良を生ずる程度の大きさに成長する前に、
その床面を清掃することにより塵埃を簡単に炉外に排出
できるので、塵埃が塗膜に付着することに起因する塗装
不良を生ずることがなく、塗装品質を向上させることが
できるという大変優れた効果を奏する。As described above, according to the present invention, the dust dropped on the floor can be poured into the dust collecting groove together with the cleaning liquid, so that the labor required for cleaning the floor is significantly reduced. Before the dust falling on the floor of the drying oven grows to a size that causes poor painting,
By cleaning the floor surface, dust can be easily discharged to the outside of the furnace, so that coating defects due to dust adhering to the coating film do not occur and coating quality can be improved. It works.
【図１】 本発明に係る乾燥炉の一例を示す正面図。FIG. 1 is a front view showing an example of a drying furnace according to the present invention.
【図２】 塵埃回収溝を示す正面図。FIG. 2 is a front view showing a dust collection groove.
【図３】 塵埃回収溝の他の例を示す正面図。FIG. 3 is a front view showing another example of the dust collecting groove.
【図４】 その平面図。FIG. 4 is a plan view thereof.
１・・・・・乾燥炉 Ｗ・・・・・ワーク ２・・・・・コンベア ３・・・・・炉本体 ３Ｆ・・・・床壁 ３ｆ・・・・床面 ４・・・・・架台 ６・・・・・コンベアレール ７・・・・・ベース ８・・・・・支柱 1 ... Drying furnace W ... Work 2 ... Conveyor 3 ... Furnace body 3F ... Floor wall 3f ... Floor surface 4 ... Stand 6 ... Conveyor rail 7 ... Base 8 ... Prop
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ２６Ｂ 15/16 Ｆ２６Ｂ 15/16 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI F26B 15/16 F26B 15/16
Claims (4)
がトンネル型の炉本体（３）に沿って配設され、前記コ
ンベア（２）は、ワーク（Ｗ）を載置する架台（４）
が、炉本体（３）の床下に敷設されたコンベアレール
（６）を走行するベース（７）に所要高さの支柱（８）
を介して取り付けられると共に、当該支柱（８）がその
搬送方向に沿って炉本体（３）の床壁（3F）に形成され
たスリット（９）から炉本体（３）に貫通されて前記架
台（４）に載置したワーク（Ｗ）を炉内で移動させるよ
うになされた乾燥炉において、炉本体（３）は、その床
面（3f）が左右両側から前記スリット（９）に向かう下
り勾配の傾斜面に形成され、当該スリット（９）を形成
する床壁（3F）の開口部左右両端縁には、床面（3f）に
落ちた塵埃を床面（3f）を伝って流れ落ちる洗浄液と共
に回収する塵埃回収溝（16）が並行に配設されたことを
特徴とする乾燥炉。A conveyor (2) for transporting a work (W).
Is disposed along a tunnel-type furnace body (3), and the conveyor (2) includes a gantry (4) on which a workpiece (W) is placed.
Is mounted on a base (7) running on a conveyor rail (6) laid under the floor of the furnace body (3), and a support (8) having a required height.
And the support (8) is penetrated through the furnace body (3) from the slit (9) formed in the floor wall (3F) of the furnace body (3) along the transport direction thereof, and In the drying furnace in which the work (W) placed on (4) is moved in the furnace, the furnace body (3) has a floor surface (3f) descending from both left and right sides toward the slit (9). The cleaning liquid flowing down the floor (3f) along the left and right edges of the opening of the floor wall (3F) formed on the slope and forming the slit (9) flows down the floor (3f). A drying furnace, wherein dust collecting grooves (16) for collecting the dust are arranged in parallel.
は、床面（3f）側の開口端縁(17f) が床面 (3f) の高さ
以下に形成されると共に、スリット（９）側の開口端縁
(17s) が床面 (3f) の高さより高く形成された請求項１
記載の乾燥炉。2. A top opening (17) of a dust collecting groove (16).
Means that the opening edge (17f) on the floor (3f) side is formed to be less than the height of the floor surface (3f) and the opening edge on the slit (9) side
(1) wherein the (17s) is formed higher than the height of the floor (3f).
Drying furnace as described.
って、床面（3f）に洗浄液を流す洗浄液供給設備 (13)
が配設されてなる請求項１又は２記載の乾燥炉。3. A cleaning liquid supply system for flowing a cleaning liquid to a floor surface (3f) along left and right side walls (3L, 3R) of a furnace body (3).
The drying furnace according to claim 1 or 2, wherein a drying oven is provided.
は、床面（3f）の近傍に、床面（3f）に沿ってその左右
両側から前記スリット（９）に向かう空気流を形成する
熱風吹出ノズル（12）が配設され、前記塵埃回収溝 (1
6) には、当該溝（16）内に溜まった塵埃を外部へ排出
する排出管 (18) が接続されてなる請求項１乃至３記載
の乾燥炉。4. Air flowing toward the slit (9) from both right and left sides along the floor (3f) near the floor (3f) on the left and right side walls (3L, 3R) of the furnace body (3). A hot air blowing nozzle (12) for forming a flow is provided, and the dust collecting groove (1
The drying furnace according to any one of claims 1 to 3, wherein a discharge pipe (18) for discharging dust accumulated in the groove (16) to the outside is connected to (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35900197A JPH11188302A (en) | 1997-12-26 | 1997-12-26 | Drying oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35900197A JPH11188302A (en) | 1997-12-26 | 1997-12-26 | Drying oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11188302A true JPH11188302A (en) | 1999-07-13 |
Family
ID=18462231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35900197A Pending JPH11188302A (en) | 1997-12-26 | 1997-12-26 | Drying oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11188302A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008232517A (en) * | 2007-03-20 | 2008-10-02 | Toyota Auto Body Co Ltd | Drying device |
| KR20110049776A (en) * | 2008-07-24 | 2011-05-12 | 에르테에스 로만 테라피-시스테메 아게 | Method for producing a multilayer compound on a cip-capable coating installation and use of the multilayer compound produced by said method for transdermal application or the application in body cavities |
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| JP6354926B1 (en) * | 2017-02-08 | 2018-07-11 | 東レ株式会社 | Method for cleaning flameproofing furnace and method for producing flameproofed fiber, carbon fiber and graphitized fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008232517A (en) * | 2007-03-20 | 2008-10-02 | Toyota Auto Body Co Ltd | Drying device |
| KR20110049776A (en) * | 2008-07-24 | 2011-05-12 | 에르테에스 로만 테라피-시스테메 아게 | Method for producing a multilayer compound on a cip-capable coating installation and use of the multilayer compound produced by said method for transdermal application or the application in body cavities |
| JP2011528613A (en) * | 2008-07-24 | 2011-11-24 | エルテーエス ローマン テラピー−ジステーメ アーゲー | Method for producing a multilayer composite in a coating device capable of CIP and use of the multilayer composite produced thereby for transdermal applications or in body cavities |
| JP2017159299A (en) * | 2008-07-24 | 2017-09-14 | エルテーエス ローマン テラピー−ジステーメ アーゲー | Multilayer composite manufacturing method in coating device capable of cip, percutaneous application of multilayer composite thus manufactured, or use for application in body cavity |
| EP2325591B1 (en) | 2009-11-24 | 2018-01-10 | Eisenmann SE | Assembly for drying objects |
| EP3294463B1 (en) | 2015-05-09 | 2019-03-06 | Eisenmann SE | Temperature control device for controlling the temperature of workpieces |
| WO2018147107A1 (en) * | 2017-02-08 | 2018-08-16 | 東レ株式会社 | Method for cleaning flameproofing furnace, method for manufacturing flameproof fiber, carbon fiber, and graphitized fiber |
| JP6354926B1 (en) * | 2017-02-08 | 2018-07-11 | 東レ株式会社 | Method for cleaning flameproofing furnace and method for producing flameproofed fiber, carbon fiber and graphitized fiber |
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| US10612164B2 (en) | 2017-02-08 | 2020-04-07 | Toray Industries, Inc. | Method of cleaning oxidation oven and method of producing oxidized fiber, carbon fiber, and graphitized fiber |
| WO2020143950A1 (en) * | 2019-01-11 | 2020-07-16 | Dürr Systems Ag | Conveying device, processing installation, method for conveying and/or processing objects |
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