JP4759320B2 - Coating machine - Google Patents

Coating machine Download PDF

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Publication number
JP4759320B2
JP4759320B2 JP2005165181A JP2005165181A JP4759320B2 JP 4759320 B2 JP4759320 B2 JP 4759320B2 JP 2005165181 A JP2005165181 A JP 2005165181A JP 2005165181 A JP2005165181 A JP 2005165181A JP 4759320 B2 JP4759320 B2 JP 4759320B2
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Prior art keywords
coating material
base
tank
shutter
inlet
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JP2005165181A
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JP2006334549A (en
Inventor
村 孝 夫 野
田 重 義 稲
野 隆 夫 上
貴 宣 森
間 健 吾 本
藤 亮 加
川 康 小
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Trinity Industrial Corp
Toyota Motor Corp
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Trinity Industrial Corp
Toyota Motor Corp
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Priority to JP2005165181A priority Critical patent/JP4759320B2/en
Priority to PCT/JP2006/311279 priority patent/WO2006132212A1/en
Publication of JP2006334549A publication Critical patent/JP2006334549A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1463—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet separate containers for different materials to be sprayed being moved from a first location, e.g. a filling station, where they are fluidically disconnected from the spraying apparatus, to a second location, generally close to the spraying apparatus, where they are fluidically connected to the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1616—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material
    • B05B5/1625—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom

Description

本発明は、正面側に塗布材霧化機構が配されると共にその背面側に塗布材充填用タンクを着脱可能に装着するジョイントが形成された塗布機に関する。   The present invention relates to a coating machine in which a coating material atomizing mechanism is arranged on the front side and a joint for detachably mounting a coating material filling tank is formed on the back side thereof.

自動車ボディの塗装では、有機溶剤を使用した塗料（塗布材）が主流であるが、環境保護及び公害防止の観点から、塗装工程において大量に発生する揮発性有機溶剤を削減することが要請されており、その対策として、水性塗料による塗装が注目を集めている。   In automobile body painting, paints (coating materials) using organic solvents are the mainstream, but from the viewpoint of environmental protection and pollution prevention, it is required to reduce volatile organic solvents generated in large quantities in the painting process. As a countermeasure, painting with water-based paint is attracting attention.

水性塗料を無駄なく使用するためには、塗着効率の高い静電塗装機（塗布機）で塗装するのが好ましいが、水性塗料は電気抵抗が低く、塗料供給系を流れる塗料を介して静電塗装機の回転霧化頭とアース側が導通しやすいため、塗料供給系全体に絶縁対策を施して、回転霧化頭に印加される−６０〜９０ｋＶの高電圧がリークするのを防止しなければならない。   In order to use the water-based paint without waste, it is preferable to apply it with an electrostatic coating machine (coating machine) with high coating efficiency. However, the water-based paint has a low electric resistance and is statically passed through the paint flowing through the paint supply system. Since the rotary atomizing head and the ground side of the electropainting machine are easy to conduct, insulation measures must be taken for the entire paint supply system to prevent leakage of the high voltage of -60 to 90 kV applied to the rotary atomizing head. I must.

このため、従来は、塗装機に対して着脱可能に装着される塗布材充填用タンクに塗料供給系から塗料を充填した後、塗料供給系と塗装機を物理的に切り離した状態で充填用タンクから塗料を圧し出して塗装することにより、塗装機に高電圧を印加してもリークしないようにしている。
特開平２０００−３１７３５４号公報 For this reason, conventionally, after a coating material filling tank, which is detachably attached to the coating machine, is filled with paint from the paint supply system, the filling tank is physically separated from the coating machine. The paint is pressed out and applied to prevent leakage even when a high voltage is applied to the coating machine.
JP 2000-317354 A

この場合、個々の塗布材充填用タンクに充填される塗料の色は決まっているので、タンク内で色混じりを起こすことはないが、機体には被塗物の塗色に応じて各色塗料を充填したタンクが次々と装着されるので、色替えするたびごとに色替洗浄を行わなければならない。
しかしながら、従来は、空の塗布材タンクを装着したまま、洗浄する必要性の低い塗布材タンクごと洗浄するようにしているので、洗浄液が無駄になるだけでなく、洗浄時間もかかるという問題があった。 In this case, since the color of the paint filled in each tank for filling the coating material is determined, color mixing does not occur in the tank, but each color paint is applied to the machine according to the paint color of the object to be coated. Since filled tanks are installed one after another, color change cleaning must be performed every time the color is changed.
However, conventionally, the entire coating material tank, which is not required to be cleaned, is cleaned while an empty coating material tank is mounted, so there is a problem that not only the cleaning liquid is wasted but also the cleaning time is increased. It was.

そこで本発明は、塗布材充填用タンクを外した状態で機体を短時間で洗浄できるようにすることを技術的課題としている。   Therefore, the present invention has a technical problem to enable the machine to be cleaned in a short time with the coating material filling tank removed.

本発明は、正面側に塗布材霧化機構が配されると共にその背面側に塗布材充填用タンクを着脱可能に装着するジョイントが形成された塗布機において、前記ジョイントは、塗布材流路を介して塗布材霧化機構に塗布材を送給する塗布材流入口が端面に開口形成されたベースと、前記タンクを直線的に進退させることによりタンクに形成された塗布材流出口とベースに形成された塗布材流入口を係脱させるタンク係脱機構と、前記係脱機構に従動してベースの周りを回転するシリンドリカルカムによりシャッタ開口部をベース端面上で回転移動させて前記塗布材流入口を開閉する回転シャッタを備えると共に、前記ベースには、回転シャッタにより前記塗布材流入口が閉塞された状態で前記塗布材流路に洗浄流体を供給する洗浄流体供給流路が形成されたことを特徴としている。   The present invention provides an applicator in which a coating material atomizing mechanism is arranged on the front side and a joint for detachably mounting a coating material filling tank is formed on the back side thereof. An application material inlet for supplying the application material to the application material atomization mechanism through the base, and an application material outlet and base formed in the tank by linearly moving the tank forward and backward. A tank engagement / disengagement mechanism that engages / disengages the formed coating material inlet and a cylindrical cam that rotates around the base in accordance with the engagement / disengagement mechanism to rotate and move the shutter opening on the base end surface. The base includes a rotary shutter that opens and closes the inlet, and the base has a cleaning fluid supply channel that supplies the cleaning fluid to the coating material channel in a state where the coating material inlet is closed by the rotary shutter. Is characterized in that made the.

本発明によれば、タンク係脱機構により塗布材充填用タンクを進退させると、これに従動してシリンドリカルカムにより回転シャッタが回動し、塗布材流入口が開閉される。
すなわち、タンクを機体側に引き込んで塗布材流出口を塗布材流入口に係合させるときは、回転シャッタに形成されたシャッタ開口部が回転移動して塗布材流入口の上で停止され、タンクを機体から押し出して係合を解くときは塗布材流出口が抜けた後、シャッタ開口部が退避して塗布材流入口が塞がれる。 According to the present invention, when the coating material filling tank is advanced and retracted by the tank engagement / disengagement mechanism, the rotary shutter is rotated by the cylindrical cam and the coating material inlet is opened and closed.
That is, when the tank is drawn into the machine body and the coating material outlet is engaged with the coating material inlet, the shutter opening formed in the rotary shutter is rotated and stopped on the coating material inlet. When releasing the engagement from the machine body, after the coating material outlet exits, the shutter opening is retracted and the coating material inlet is closed.

また、塗布材流入口が開口形成されたベースには、塗布材流路に洗浄流体が供給される洗浄流体供給流路が形成されているので、回転シャッタにより塗布材流入口を閉塞した状態で作動流体を供給することにより、塗布材流路内に残存する塗布材のみを洗浄すれば足り、洗浄流体を節約し、洗浄時間も短縮することができる。
この場合に、ベース端面に洗浄流体供給流路を開口させ、例えば、洗浄流体供給口と塗布材流入口を囲むように一つのパッキンを設ければ、回転シャッタにより流入口が閉塞されたときに、そのパッキンにより、ベースと回転シャッタの間に洗浄流体供給口と塗布材流入口を連通する流路が形成される。
したがって、洗浄流体を塗布材流路の最上流に位置する塗布材流入口から流入させることができ、洗浄不良を生ずることもない。 In addition, since the cleaning fluid supply channel for supplying the cleaning fluid to the coating material channel is formed in the base in which the coating material inlet is formed with an opening, the coating material inlet is closed by the rotary shutter. By supplying the working fluid, it is sufficient to clean only the coating material remaining in the coating material flow path, saving the cleaning fluid and shortening the cleaning time.
In this case, if the cleaning fluid supply flow path is opened at the base end face and, for example, one packing is provided so as to surround the cleaning fluid supply port and the coating material inlet, the inlet is closed by the rotary shutter. The packing forms a flow path that connects the cleaning fluid supply port and the coating material inflow port between the base and the rotary shutter.
Therefore, the cleaning fluid can be introduced from the coating material inlet located in the uppermost stream of the coating material flow path, and no cleaning failure occurs.

また、回転シャッタとベースとの間に、回転時に回転シャッタをベースから浮かし、シャッタ開口部が閉塞位置に達した時点で回転シャッタをベースに密着させるように付勢するカム機構を形成すれば、回転シャッタとベースが擦れて傷付いたり、その削りカスが塗料に混ざることもなく、特に、上述したようにベース端面にパッキンを配する場合にパッキンを擦って磨耗させることもない。   Further, if a cam mechanism is formed between the rotary shutter and the base so that the rotary shutter floats from the base during rotation and the rotary shutter is brought into close contact with the base when the shutter opening reaches the closed position, The rotating shutter and the base are not rubbed and damaged, and the scrap is not mixed with the paint, and particularly when the packing is disposed on the end face of the base as described above, the packing is not rubbed and worn.

本例では、塗布材充填用タンクを外した状態で機体を短時間で洗浄するという目的を、タンクの係脱動作に連動して塗布材流入口を開閉する回転シャッタを設けることにより実現した。   In this example, the object of cleaning the machine body in a short time with the coating material filling tank removed is realized by providing a rotary shutter that opens and closes the coating material inlet in conjunction with the engagement / disengagement operation of the tank.

図１は本発明に係る塗布機を示す説明図、図２〜図４はその要部を示す断面図である。   FIG. 1 is an explanatory view showing a coating machine according to the present invention, and FIGS. 2 to 4 are cross-sectional views showing the main parts thereof.

図１に示す塗装機（塗布機）１は、正面側に塗布材霧化機構である回転霧化頭２が配されると共にその背面側に塗布材充填用タンク３を着脱可能に装着するジョイント４が形成され、ジョイント４に装着されたタンク３から圧し出された塗料が塗料（塗布材）流路５を介して送給され、−４０〜−１５０ｋＶの高電圧を印加した状態で、エアモータＭにより１万〜６万ｒｐｍで高速回転駆動される回転霧化頭２で霧化されて、自動車ボディなど被塗物に静電塗着されるようになっている。   A coating machine (coating machine) 1 shown in FIG. 1 has a rotary atomizing head 2 which is a coating material atomizing mechanism on the front side and a joint for detachably mounting a coating material filling tank 3 on the back side. 4 is formed, and the paint pumped out from the tank 3 attached to the joint 4 is fed through the paint (applying material) flow path 5 and applied with a high voltage of −40 to −150 kV. M is atomized by a rotary atomizing head 2 that is driven to rotate at a high speed of 10,000 to 60,000 rpm by M, and electrostatically applied to an object to be coated such as an automobile body.

塗布材充填用タンク３は、内部に配された柔軟な塗料バッグ６を境に、その外側が作動流体室７に形成されている。
そして、ジョイント４に装着されるタンク３の先端側には、後述するタンク係脱機構１３のキャッチ１５に把持されるフランジ８が形成されると共に、塗料（塗布材）流出口９及び作動流体流入口１０が形成され、作動流体流入口１０から作動流体室７に流入した作動流体の圧力により塗料バッグ６が圧し潰されて、塗料バッグ６内の塗料が塗料流出口９から圧し出されるようになっている。 The coating material filling tank 3 is formed in the working fluid chamber 7 on the outer side with a flexible paint bag 6 arranged inside.
A flange 8 that is gripped by a catch 15 of a tank engagement / disengagement mechanism 13 to be described later is formed on the front end side of the tank 3 attached to the joint 4, and a paint (coating material) outlet 9 and a working fluid flow The inlet 10 is formed, and the paint bag 6 is crushed by the pressure of the working fluid flowing into the working fluid chamber 7 from the working fluid inlet 10 so that the paint in the paint bag 6 is pushed out from the paint outlet 9. It has become.

ジョイント４は、塗布材流路５を介して回転霧化頭２に塗料を送給する塗料（塗布材）流入口１１が端面１２ａに開口形成された円柱形のベース１２と、タンク３を直線的に進退させることによりタンク３に形成された塗布材流出口９とベース１２に形成された塗料流入口１１を係脱させるタンク係脱機構１３と、塗料流入口１１を開閉する回転シャッタ１４を備えている。   The joint 4 linearly connects the tank 3 with a cylindrical base 12 in which a coating material (coating material) inlet port 11 for supplying the coating material to the rotary atomizing head 2 through the coating material flow path 5 is formed in the end surface 12a. The tank engagement / disengagement mechanism 13 that engages / disengages the coating material outlet 9 formed in the tank 3 and the paint inlet 11 formed in the base 12 and the rotary shutter 14 that opens and closes the paint inlet 11 are moved forward and backward. I have.

このタンク係脱機構１３は、タンク３のフランジ８を把持するキャッチ１５と、タンク交換位置（図２参照）とタンク係合位置（図４参照）の間で進退させるシリンダ１６を備えている。
キャッチ１５は、タンク３をスライドさせることにより着脱する案内レールを兼用し、その案内レールの一方側から充填済タンク３を押し込むことにより、キャッチ１５に把持されていた使用済タンク３を反対側へ押し出してタンク３を簡単に交換できるようになっている。
この状態でシリンダ１６を収縮させれば、タンク３が引き込まれて塗布材流出口９が塗料流入口１１に係合され、その後シリンダ１６を伸長させればタンク３が押し出されて塗布材流出口９が塗料流入口１１から外れる。 The tank engagement / disengagement mechanism 13 includes a catch 15 that holds the flange 8 of the tank 3 and a cylinder 16 that moves forward and backward between a tank replacement position (see FIG. 2) and a tank engagement position (see FIG. 4).
The catch 15 also serves as a guide rail that is attached and detached by sliding the tank 3, and by pushing the filled tank 3 from one side of the guide rail, the used tank 3 held by the catch 15 is moved to the opposite side. The tank 3 can be easily replaced by being pushed out.
If the cylinder 16 is contracted in this state, the tank 3 is drawn and the coating material outlet 9 is engaged with the coating material inlet 11, and then the tank 3 is pushed out when the cylinder 16 is extended to apply the coating material outlet. 9 is removed from the paint inlet 11.

回転シャッタ１４は、ベース１２を覆う有蓋円筒形に形成されると共に、キャッチ１５と共に昇降する接触子１５ａに係合するカム溝１４ａがその周面に形成されて、接触子１５ａに従動してベース１２の周りを回転するシリンドリカルカム１７で構成されている。
また、ベース端面１２ａを覆うシャッタ板１４ｂには、塗料流入口１１を開閉するシャッタ開口部１４ｃが形成されている。 The rotary shutter 14 is formed in a covered cylindrical shape that covers the base 12, and a cam groove 14 a that engages with the contact 15 a that moves up and down together with the catch 15 is formed on the peripheral surface thereof, and is driven by the contact 15 a. 12 is constituted by a cylindrical cam 17 rotating around 12.
The shutter plate 14b that covers the base end surface 12a is formed with a shutter opening 14c that opens and closes the paint inlet 11.

シリンドリカルカム１７は、キャッチ１５がタンク交換位置に進出した状態でその接触子１５ａがカム溝１４ａのＸ１に位置され、塗料流入口１１がシャッタ板１４ｂにより塞がれるようにシャッタ開口部１４ｃが塗料流入口１１から位置ずれした閉塞位置に回動される。
そして、キャッチ１５がタンク３を引き込んで塗布材流出口９の先端がシャッタ板１４ｂに当たるまでに、その接触子１５ａがカム溝１４ａの螺旋部分Ｘ１〜Ｘ３を走行して、シャッタ開口部１４ｃが塗料流入口１１を開放する開放位置に回動される。
さらに、塗布材流出口９が塗料流入口１１に完全に挿入されるまでキャッチ１５がタンク３を引き込むと、その接触子１５ａがカム溝１４ａの直線部分Ｘ３〜Ｘ４を走行して、シャッタ開口部１４ｃが開放位置に停止されるように設計されている。
なお、カム溝１４ａは、螺旋部分Ｘ１〜Ｘ３の間のＸ２で折曲しているが、これは後述のカム機構１８による回転シャッタ１４の動きを逃がすためである。 The cylindrical cam 17, the contact 15a in a state in which the catch 15 is advanced to the tank replacement position is a position in X 1 of the cam groove 14a, the shutter opening 14c as paint inlet 11 is closed by the shutter plate 14b It is rotated to the closed position displaced from the paint inlet 11.
Then, until the catch 15 is the tip of the coating material outlet 9 draws tank 3 corresponds to the shutter plate 14b, the contacts 15a are traveling on a helical portion X 1 to X 3 of the cam groove 14a, the shutter openings 14c Is rotated to an open position where the paint inlet 11 is opened.
Furthermore, the coating material outlet port 9 when the catch 15 until it is fully inserted into the paint inlet 11 draws tank 3, the contact 15a is traveling on a straight portion X 3 to X 4 of the cam groove 14a, the shutter The opening 14c is designed to be stopped at the open position.
Incidentally, the cam groove 14a is being bent by X 2 between the helix part X 1 to X 3, which is to release the movement of the rotating shutter 14 by the cam mechanism 18 described later.

すなわち、回転シャッタ１４の内側には、ベース１２の周面に形成されたカム溝１２ｂに係合する接触子１４ｄが形成され、回転シャッタ１４を可動節としベース１２を固定節とするカム機構１８が形成されている。
このカム機構１８は、シャッタ開口部１４ｃが閉塞位置にあるときは回転シャッタ１４をベース１２に密着させるように付勢し、タンク係脱機構１３により回転シャッタ１４が回動するときにはシャッタ板１４ｂとベース端面１２ａが接触して擦れないように回転シャッタ１４をベース１２から浮かすよう設計されている。
これにより、シャッタ開口部１４ｃが閉塞位置にあるときは、接触子１４ｄがカム溝１２ｂのＹ１に位置してシャッタ板１４ｂがベース端面１２ａに密着され、接触して擦れないように回転シャッタ１４をベース１２から浮かすように、回転シャッタ１４の回動により接触子１４ｄがカム溝１２ｂの傾斜部分Ｙ１〜Ｙ２に移動するときに回転シャッタ１４がベース１２から浮かされ、さらに、接触子１４ｄがカム溝１２ｂの水平部分Ｙ２〜Ｙ３を移動する間、そのギャップが維持されるようになっている。 That is, a contact 14d that engages with a cam groove 12b formed on the peripheral surface of the base 12 is formed inside the rotary shutter 14, and the cam mechanism 18 has the rotary shutter 14 as a movable node and the base 12 as a fixed node. Is formed.
The cam mechanism 18 urges the rotating shutter 14 to be in close contact with the base 12 when the shutter opening 14c is in the closed position, and the cam mechanism 18 and the shutter plate 14b when the rotating shutter 14 is rotated by the tank engagement / disengagement mechanism 13. The rotary shutter 14 is designed to float from the base 12 so that the base end surface 12a does not come into contact with and rub.
Thus, when the shutter opening 14c is in the closed position, the contact 14d is in close contact with the positioned Y 1 shutter plate 14b is based end face 12a of the cam groove 12b, the rotation as chafing contact shutter 14 the way float from the base 12, rotating shutter 14. when the contactor 14d by the rotation of the rotating shutter 14 is moved to the inclined portion Y 1 to Y 2 of the cam groove 12b is floated from the base 12, furthermore, is the contact 14d while moving the horizontal part Y 2 to Y 3 in the cam grooves 12b, so that the that gap is maintained.

また、ベース１２の端面１２ａには、洗浄流体供給流路２１が開口された洗浄流体供給口２２が形成され、洗浄流体供給口２２から塗料流入口１１に至る案内溝２３が形成されると共に、塗料流入口１１、洗浄流体供給口２２及び案内溝２３を囲むようにＯリングでなるパッキン２４が嵌め付けられている。
これによって、回転シャッタ１４のシャッタ板１４ｂがベース端面１２ａに密着するように付勢されたときに、パッキン２４で囲まれた領域がシャッタ板１４ｂ及びベース端面１２ａに挟まれた気密空間となり、洗浄流体供給口２２から案内溝２３を通り塗料流入口１１に連通する流路が形成されることとなる。 Further, a cleaning fluid supply port 22 in which a cleaning fluid supply channel 21 is opened is formed on the end surface 12a of the base 12, and a guide groove 23 extending from the cleaning fluid supply port 22 to the paint inlet 11 is formed. A packing 24 made of an O-ring is fitted so as to surround the paint inflow port 11, the cleaning fluid supply port 22 and the guide groove 23.
As a result, when the shutter plate 14b of the rotary shutter 14 is urged so as to be in close contact with the base end surface 12a, the region surrounded by the packing 24 becomes an airtight space sandwiched between the shutter plate 14b and the base end surface 12a. A flow path communicating from the fluid supply port 22 through the guide groove 23 to the paint inlet 11 is formed.

なお、塗装機１の背面側には、タンク係脱機構１３によりタンク３が引き込まれたときにその作動流体流入口１０と係合される位置に、作動流体を供給する作動流体ポート２５が形成されている。   A working fluid port 25 for supplying a working fluid is formed on the back side of the coating machine 1 at a position where the tank 3 is engaged with the working fluid inlet 10 when the tank 3 is pulled in by the tank engagement / disengagement mechanism 13. Has been.

以上が本発明の一構成例であって、次にその作用について説明する。
まず、図２に示すように、タンク係脱機構１３のシリンダ１６を伸長させてキャッチ１５をタンク交換位置にセットし、充填済みのタンク３をスライドさせてそのフランジ８をキャッチ１５に係合させる。
このとき、キャッチ１５に形成された接触子１５ａはカム溝１４ａのＸ１に位置して、回転シャッタ１４のシャッタ開口部１４ｃは塗料流入口１１からずれた閉塞位置にあり、また、回転シャッタ１４内側の接触子１４ｄがベース１２に形成されたカム溝１２ｂのＹ１に位置してベース端面１２ａにシャッタ板１４ｂが密着するように付勢されて塗料流入口１１が塞がれている。 The above is one configuration example of the present invention, and the operation thereof will be described next.
First, as shown in FIG. 2, the cylinder 16 of the tank engagement / disengagement mechanism 13 is extended to set the catch 15 at the tank replacement position, and the filled tank 3 is slid to engage the flange 8 with the catch 15. .
At this time, contact 15a formed on the catch 15 is located in X 1 of the cam groove 14a, the shutter opening 14c of the rotating shutter 14 is in the closed position deviated from the paint inlet 11, also rotating shutter 14 The inner contact 14 d is positioned at Y 1 of the cam groove 12 b formed in the base 12 and is urged so that the shutter plate 14 b comes into close contact with the base end surface 12 a to close the paint inlet 11.

次いで、タンク係脱機構１３のシリンダ１６を収縮開始すると、接触子１５ａがカム溝１４ａの螺旋部分Ｘ１〜Ｘ３を走行することにより回転シャッタ１４が回動される。これと同時に、回転シャッタ１４に形成された接触子１４ａがカム溝１２ｂのＹ１〜Ｙ２を走行して、シャッタ板１４ｂがベース端面１２ａから浮かされ、以後、接触子１４ａがカム溝１２ｂのＹ２〜Ｙ３を走行する間、この間隔が維持される。 Then, when the cylinder 16 of the tank engaging and disengaging mechanism 13 starts shrinking, rotating shutter 14 is rotated by the contact 15a travels a helical portion X 1 to X 3 of the cam groove 14a. At the same time, the contact 14a formed on the rotating shutter 14 is traveling on a Y 1 to Y 2 of the cam groove 12b, the shutter plate 14b is floated from the base end surface 12a, thereafter, the contact 14a of the cam groove 12b Y while traveling the 2 to Y 3, this spacing is maintained.

そして、図３に示すように、タンク係脱機構１３のシリンダ１６を収縮して塗布材流出口９の先端がシャッタ板１４ｂに当たる直前に、接触子１５ａがカム溝１４ａのＸ３に達し、シャッタ開口部１４ｃが塗料流入口１１を開放する開放位置に回動される。 Then, as shown in FIG. 3, just before the tip of the cylinder 16 contracted by the coating material outlet 9 of the tank engaging and disengaging mechanism 13 hits the shutter plate 14b, the contact 15a reaches the X 3 of the cam groove 14a, the shutter The opening 14c is rotated to an open position where the paint inlet 11 is opened.

さらに、図４に示すように、塗布材流出口９が塗料流入口１１に完全に挿入されるまでキャッチ１５がタンク３を引き込むと、その間、その接触子１５ａがカム溝１４ａの直線部分Ｘ３〜Ｘ４を走行して、シャッタ開口部１４ｃが開放位置に停止される。 Further, as shown in FIG. 4, when the catch 15 pulls in the tank 3 until the coating material outlet 9 is completely inserted into the paint inlet 11, the contact 15a is in the straight portion X 3 of the cam groove 14a. to X 4 traveling on a shutter opening 14c is stopped in the open position.

このようにタンク３を装着した塗装機１に作動流体を供給し、その圧力により塗料バッグ６を圧し潰しながら塗料を圧し出して塗装する。
そして、塗装が終了すると、上述とが逆に、タンク係脱機構１３のシリンダ１６を伸長させ、図２に示すように、キャッチ１５をタンク交換位置に位置させてタンク３の交換を行う。 In this way, the working fluid is supplied to the coating machine 1 equipped with the tank 3, and the paint is squeezed out while the paint bag 6 is crushed by the pressure.
When the coating is completed, the cylinder 16 of the tank engagement / disengagement mechanism 13 is extended contrary to the above, and the tank 3 is replaced by positioning the catch 15 at the tank replacement position as shown in FIG.

このとき、カム機構１８により、回転シャッタ１４のシャッタ板１４ｂがベース端面１２ａに密着するように付勢されており、パッキン２４で囲まれた領域がシャッタ板１４ｂ及びベース端面１２ａに挟まれた気密空間となって、洗浄流体供給口２２から案内溝２３を通り塗料流入口１１に連通する流路が形成される。
したがって、洗浄流体供給流路２１を介して洗浄液・洗浄エアなどの洗浄流体を供給すれば、その洗浄流体は洗浄流体供給口２２から案内溝２３を通り塗料流入口１１に流入するので、塗料流路５及び回転霧化頭３に付着残存している塗料が洗浄除去される。
このように、塗装機１を色替洗浄する際に、塗料流路５及び回転霧化頭３に付着残存している塗料のみを洗浄すれば足りるので、色替洗浄に要する時間を短縮することができると同時に、洗浄流体を節約することができるという大変優れた効果を奏する。 At this time, the shutter plate 14b of the rotary shutter 14 is urged by the cam mechanism 18 so as to be in close contact with the base end surface 12a, and the region surrounded by the packing 24 is airtight between the shutter plate 14b and the base end surface 12a. A flow path is formed which becomes a space and communicates from the cleaning fluid supply port 22 through the guide groove 23 to the paint inlet 11.
Therefore, if a cleaning fluid such as cleaning liquid or cleaning air is supplied through the cleaning fluid supply channel 21, the cleaning fluid flows from the cleaning fluid supply port 22 through the guide groove 23 into the paint inlet 11, and thus the paint flow The paint remaining on the path 5 and the rotary atomizing head 3 is washed away.
In this way, when the coating machine 1 is subjected to color change cleaning, it is sufficient to clean only the paint remaining on the paint flow path 5 and the rotary atomizing head 3, thereby reducing the time required for color change cleaning. At the same time, the cleaning fluid can be saved.

本発明は、塗料を静電塗装する塗布機の用途、特に、水性塗料その他の導電性塗料を静電塗装する塗布機の用途に適用して好適である。   The present invention is suitable for application to an applicator for electrostatically coating a paint, and particularly to an applicator for electrostatically coating an aqueous paint or other conductive paint.

本発明の塗布機の一例を示す全体図。The whole figure which shows an example of the coating device of this invention. その要部を示す説明図。Explanatory drawing which shows the principal part. その要部を示す説明図。Explanatory drawing which shows the principal part. その要部を示す説明図。Explanatory drawing which shows the principal part. カム機構を示す概略説明図。The schematic explanatory drawing which shows a cam mechanism.

符号の説明Explanation of symbols

１ 塗装機（塗布機）
２ 回転霧化頭（塗布材霧化機構）
３ 塗布材充填用タンク
４ ジョイント
５ 塗料（塗布材）流路
９ 塗料（塗布材）流出口
１１ 塗料（塗布材）流入口
１２ ベース
１３ タンク係脱機構
１４ 回転シャッタ
１４ｂ シャッタ板
１４ｃ シャッタ開口部
１７ シリンドリカルカム
１８ カム機構１８
２１ 洗浄流体供給流路


1 Coating machine (coating machine)
2 Rotary atomization head (coating material atomization mechanism)
3 Coating Material Filling Tank 4 Joint 5 Paint (Coating Material) Channel 9 Paint (Coating Material) Outlet 11 Paint (Coating Material) Inlet
12 Base 13 Tank Engagement / Removal Mechanism 14 Rotating Shutter 14b Shutter Plate 14c Shutter Opening 17 Cylindrical Cam 18 Cam Mechanism 18
21 Cleaning fluid supply flow path


Claims (3)

正面側に塗布材霧化機構が配されると共にその背面側に塗布材充填用タンクを着脱可能に装着するジョイントが形成された塗布機において、
前記ジョイントは、塗布材流路を介して塗布材霧化機構に塗布材を送給する塗布材流入口が端面に開口形成されたベースと、前記タンクを直線的に進退させることによりタンクに形成された塗布材流出口とベースに形成された塗布材流入口を係脱させるタンク係脱機構と、前記係脱機構に従動してベースの周りを回転するシリンドリカルカムによりシャッタ開口部をベース端面上で回転移動させて前記塗布材流入口を開閉する回転シャッタを備えると共に、
前記ベースには、回転シャッタにより前記塗布材流入口が閉塞された状態で前記塗布材流路に洗浄流体を供給する洗浄流体供給流路が形成されたことを特徴とする塗布機。 In a coating machine in which a coating material atomizing mechanism is arranged on the front side and a joint for detachably mounting a coating material filling tank on the back side is formed,
The joint is formed in the tank by linearly moving the tank forward and backward, and a base in which a coating material inlet for feeding the coating material to the coating material atomizing mechanism through the coating material flow path is formed at the end surface. A shutter engaging portion on the base end surface by a tank engaging / disengaging mechanism for engaging / disengaging the applied coating material outlet and the coating material inflow port formed in the base, and a cylindrical cam driven by the engaging / disengaging mechanism and rotating around the base. And a rotary shutter that opens and closes the coating material inlet by rotating and moving with
The coating machine according to claim 1, wherein a cleaning fluid supply channel that supplies a cleaning fluid to the coating material channel in a state where the coating material inlet is closed by a rotary shutter is formed in the base. 回転シャッタを可動節としベースを固定節とし、シャッタ開口部が閉塞位置にあるときは回転シャッタをベースに密着させるように付勢し、回転シャッタが回動するときには回転シャッタをベースの端面から浮した状態に維持するカム機構が形成されてなる請求項１記載の塗布機。   The rotary shutter is a movable node and the base is a fixed node. When the shutter opening is in the closed position, the rotary shutter is urged to be in close contact with the base, and when the rotary shutter rotates, the rotary shutter is lifted from the end surface of the base. The coating machine according to claim 1, wherein a cam mechanism is formed to maintain the applied state. 前記ベース端面に洗浄流体供給流路が開口されると共に、回転シャッタにより流入口が閉塞された状態で、ベースと回転シャッタの間に洗浄流体供給口と塗布材流入口を連通する流路が形成された請求項１記載の塗布機。
A cleaning fluid supply channel is opened at the end surface of the base, and a channel is formed between the base and the rotary shutter so that the cleaning fluid supply port and the coating material inlet are in communication with the inlet closed. The coating machine according to claim 1.
JP2005165181A 2005-06-06 2005-06-06 Coating machine Active JP4759320B2 (en)

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