JP2010036090A - Rotary spray coater - Google Patents

Rotary spray coater Download PDF

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JP2010036090A
JP2010036090A JP2008200738A JP2008200738A JP2010036090A JP 2010036090 A JP2010036090 A JP 2010036090A JP 2008200738 A JP2008200738 A JP 2008200738A JP 2008200738 A JP2008200738 A JP 2008200738A JP 2010036090 A JP2010036090 A JP 2010036090A
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air
rotary atomizing
coating machine
pattern air
pattern
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JP5430894B2 (en
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Kenji Murata
賢二 村田
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Asahi Sunac Corp
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Asahi Sunac Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To eject pattern air of a stable flow volume and a stable flow velocity. <P>SOLUTION: A rotary spray coater is constructed to form atomized paint, radially ejected by a centrifugal force from the outer circumferential edge of a rotary spray head 23, into a prescribed pattern by the pattern air and to send it forward. An axial-flow compressor 29 is rotary-drived by a motor 27 for forming pattern air that generates a turning force by electricity, thereby air taken in from behind a coater body 10 is ejected as the pattern air. When electricity is supplied to the motor 27 for forming pattern air, its voltage and current are kept stable without fluctuation, and therefore the rotation number of the axial-flow compressor 29 as well as the flow volume and the flow velocity of the pattern air are stabilized. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、回転霧化塗装機に関するものである。   The present invention relates to a rotary atomizing coating machine.

特許文献１には、加圧エアにより回転力を発生するエアタービン機構を用い、このエアタービン機構を駆動源として回転霧化頭を回転駆動させることで、回転霧化頭に供給した液体塗料を霧化状態にして噴出させる回転霧化塗装機が開示されている。このようにエアタービン機構を用いた回転霧化塗装機では、エアタービン機構からの排気を、回転霧化頭の外周縁から前方へ噴出させるパターンエアとして流用することが行われる。パターンエアは、回転霧化頭の外周から放射状に噴出する霧化塗料を、包み込むことによって所定のパターンに成形するとともに被塗物に向けて前方へ送出する。
特開２００５−１７７５６９公報 In Patent Document 1, an air turbine mechanism that generates a rotational force by pressurized air is used, and the liquid paint supplied to the rotary atomizing head is rotated by rotating the rotary atomizing head using the air turbine mechanism as a drive source. A rotary atomizing coating machine that is ejected in an atomized state is disclosed. As described above, in the rotary atomizing coating machine using the air turbine mechanism, the exhaust from the air turbine mechanism is used as pattern air that is ejected forward from the outer peripheral edge of the rotary atomizing head. The pattern air is formed into a predetermined pattern by wrapping the atomized paint ejected radially from the outer periphery of the rotary atomizing head, and is sent forward toward the object to be coated.
JP 2005-177469 A

塗装機が、被塗物の形状に合わせて移動する可動タイプのものである場合、加圧エアの供給源を塗装機から離れた位置に配置し、供給源と塗装機との間に加圧エアを圧送するためのホースが配索される。このような構造では、加圧エアが供給源から塗装機へ圧送される間にエア漏れが生じることや、加圧エアが圧縮性流体であること等が原因となって、加圧エアの圧力が変動する虞があるため、パターンエアの流量や流速が不安定になり易いという事情がある。このような問題は、エアタービン機構の排気を流用してパターンエアとする場合に限らず、可動タイプの塗装機に、エアタービン機構とは別に独立したエア流路を設けた場合でも同様に生じ得る。
本発明は上記のような事情に基づいて完成されたものであって、安定したパターンエアを噴出させることを目的とする。 When the coating machine is a movable type that moves according to the shape of the object to be coated, place the pressurized air supply source at a position away from the coating machine and pressurize between the supply source and the coating machine. A hose for pumping air is routed. In such a structure, the pressure of the pressurized air is caused by the occurrence of air leakage while the pressurized air is being pumped from the supply source to the coating machine, or because the pressurized air is a compressible fluid. Therefore, there is a situation that the flow rate and flow rate of the pattern air are likely to be unstable. Such a problem occurs not only in the case of using the exhaust of the air turbine mechanism as pattern air but also in the case where an independent air flow path is provided in the movable type coating machine separately from the air turbine mechanism. obtain.
The present invention has been completed based on the above circumstances, and an object thereof is to eject stable pattern air.

上記の目的を達成するための手段として、請求項１の発明は、塗装機本体と、前記塗装機本体の前端部に設けられて回転駆動される回転霧化頭と、前記塗装機本体の前面において前記回転霧化頭を包囲するように開口し、筒状のパターンエアを前方へ噴出させるエア噴出口とを備え、遠心力により前記回転霧化頭の外周縁から放出された霧化塗料を、前記パターンエアにより所定のパターンに成形して前方へ送出するようになっている回転霧化塗装機において、電力により回転力を発生させるパターンエア生成用モータと、前記パターンエア生成用モータにより回転駆動され、前記塗装機本体の後方から取り込んだ空気を、前記エア噴出口に圧送して前記パターンエアとして噴出させる軸流圧縮機とが設けられているところに特徴を有する。   As means for achieving the above object, the invention of claim 1 is directed to a coating machine main body, a rotary atomizing head provided at a front end of the coating machine main body and driven to rotate, and a front surface of the coating machine main body. An atomizing paint released from the outer peripheral edge of the rotating atomizing head by centrifugal force. In a rotary atomizing coating machine that is shaped into a predetermined pattern by the pattern air and is sent forward, the pattern air generation motor that generates a rotational force by electric power is rotated by the pattern air generation motor. It is characterized in that an axial flow compressor that is driven and pumps air taken in from the rear of the coating machine main body to the air outlet and ejects it as the pattern air is provided.

請求項２の発明は、請求項１に記載のものにおいて、電力により回転力を発生して前記回転霧化頭を回転駆動する電動モータが設けられているところに特徴を有する。   The invention of claim 2 is characterized in that, in the apparatus of claim 1, an electric motor is provided for generating rotational force by electric power to rotationally drive the rotary atomizing head.

＜請求項１の発明＞
一般に電圧や電流の制御は容易であることから、パターンエア生成用モータに電力を供給する際には、その電圧値や電流値を変動させずに安定した状態で供給することができる。これにより、パターンエア生成用モータの回転数及び軸流圧縮機の回転数を安定させ、流量及び流速が安定したパターンエアを噴出させることができる。 <Invention of Claim 1>
In general, since the voltage and current can be easily controlled, when power is supplied to the pattern air generation motor, the voltage value and current value can be supplied in a stable state without fluctuation. Thereby, the rotation speed of the motor for pattern air generation and the rotation speed of the axial compressor can be stabilized, and pattern air with a stable flow rate and flow velocity can be ejected.

＜請求項２の発明＞
一般に電圧や電流の制御は容易であることから、電動モータに電力を供給する際には、その電圧値や電流値を変動させずに安定した状態で供給することができる。したがって、電動モータの回転数及び回転霧化頭の回転数が安定する。 <Invention of Claim 2>
In general, since voltage and current can be easily controlled, when power is supplied to an electric motor, the voltage and current can be supplied in a stable state without fluctuation. Therefore, the rotation speed of the electric motor and the rotation speed of the rotary atomizing head are stabilized.

＜実施形態１＞
以下、本発明を具体化した実施形態１を図１乃至図５を参照して説明する。本実施形態の回転霧化塗装機は、下方へグリップ１１を突出させた塗装機本体１０の前端部に、軸線を前後方向に向けた回転霧化頭２３を設け、この回転霧化頭２３を回転駆動することにより、回転霧化頭２３に供給した液体の塗料を霧化状態で噴出するとともに、噴出した霧化状の塗料を所定のパターンエアにより成形して被塗物（図示せず）に塗着させるようしたものである。 <Embodiment 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. The rotary atomizing coating machine of the present embodiment is provided with a rotary atomizing head 23 whose axis is directed in the front-rear direction at the front end portion of the coating machine body 10 with the grip 11 protruding downward. By being driven to rotate, the liquid paint supplied to the rotary atomizing head 23 is ejected in an atomized state, and the ejected atomized paint is formed with a predetermined pattern air to be coated (not shown). It is intended to be applied to.

塗装機本体１０内には、断面形状が回転霧化頭２３の回転中心と同心の円形をなして塗装機本体１０を前後方向に貫通する収容空間１２が形成され、収容空間１２内には、回転霧化頭２３と同心の円筒形をなす保持部材１３が固定して設けられている。収容空間１２の内周と保持部材１３の外周との間の円筒状の空間は、塗装機本体１０の後端から前端へ連通するエア流路１４となっている。保持部材１３を固定する手段としては、図５に示すように、保持部材１３の外周に周方向に間隔を空けた複数位置（例えば、３箇所）から突部１５を突出させ、これらの突部１５を収容空間１２の内周に固定する構造がとられている。保持部材１３には、その前端面に開口する前部収容凹部１６と後端面に開口する後部収容凹部１７とが形成されており、前部収容凹部１６と後部収容凹部１７との間は隔壁部１８となっている。   In the coating machine main body 10, a storage space 12 is formed in which the cross-sectional shape is a circle concentric with the rotation center of the rotary atomizing head 23 and penetrates the coating machine main body 10 in the front-rear direction. A holding member 13 having a cylindrical shape concentric with the rotary atomizing head 23 is fixedly provided. A cylindrical space between the inner periphery of the housing space 12 and the outer periphery of the holding member 13 is an air flow path 14 that communicates from the rear end to the front end of the coating machine body 10. As shown in FIG. 5, as means for fixing the holding member 13, the protrusions 15 are protruded from a plurality of positions (for example, three locations) spaced in the circumferential direction on the outer periphery of the holding member 13. The structure which fixes 15 to the inner periphery of the accommodation space 12 is taken. The holding member 13 is formed with a front receiving recess 16 that opens to the front end surface and a rear receiving recess 17 that opens to the rear end surface, and a partition wall portion is formed between the front receiving recess 16 and the rear receiving recess 17. It is 18.

前部収容凹部１６内には、回転霧化頭２３と同心状の円筒形をなす塗料供給管１９が、隔壁部１８の前面に固定されて前方へ延びた形態で設けられている。隔壁部１８内には連通孔２０が形成されており、グリップ１１内に設けた塗料流入路（図示せず）の上端が、連通孔２０の下端に連通し、連通孔２０の前端が塗料供給管１９に後端部に連通されている。   A paint supply pipe 19 having a cylindrical shape concentric with the rotary atomizing head 23 is provided in the front housing recess 16 in a form that is fixed to the front surface of the partition wall 18 and extends forward. A communication hole 20 is formed in the partition wall 18, an upper end of a paint inflow passage (not shown) provided in the grip 11 communicates with a lower end of the communication hole 20, and a front end of the communication hole 20 is a paint supply. The tube 19 communicates with the rear end.

前部収容凹部１６内には、前後方向に貫通する円筒状の電動モータ２１が固定して収容されている。電動モータ２１の中心孔には、回転霧化頭２３と同心の円筒形をなし塗料供給管１９を包囲する形態の出力軸２２が設けられており、電動モータ２１に電力が供給されると、出力軸２２が所定の速度で回転駆動されるようになっている。この出力軸２２の前端部には、回転霧化頭２３が一体に回転し得るように固着されている。   A cylindrical electric motor 21 penetrating in the front-rear direction is fixedly housed in the front housing recess 16. In the central hole of the electric motor 21, an output shaft 22 having a cylindrical shape concentric with the rotary atomizing head 23 and surrounding the paint supply pipe 19 is provided. When electric power is supplied to the electric motor 21, The output shaft 22 is rotationally driven at a predetermined speed. A rotary atomizing head 23 is fixed to the front end portion of the output shaft 22 so that it can rotate integrally.

回転霧化頭２３は、前面が凹んだ円盤状をなし、その後面中央部には、後方へ突出する円筒状の筒部２４が形成されている。回転霧化頭２３の内部には、筒部２４に連通する貯留室２５が形成されているとともに、この貯留室２５から回転霧化頭２３の前面に連通する複数の流出孔２６が形成されている。塗料流入路に供給された液体の塗料は、連通孔２０、塗料供給管１９、筒部２４を順に通って貯留室２５内に流入し、貯留室２５から流出孔２６を通って回転霧化頭２３の前面に供給されるようになっている。電動モータ２１に電力が供給されて回転霧化頭２３が回転駆動されると、回転霧化頭２３の前面に供給された塗料が、遠心力により回転霧化頭２３の外周縁に向かって拡散しながら流れ、回転霧化頭２３の外周縁から霧化状となって放射状に噴出（放出）されるようになっている。   The rotary atomizing head 23 has a disk shape with a recessed front surface, and a cylindrical tube portion 24 protruding rearward is formed at the center of the rear surface. In the rotary atomizing head 23, a storage chamber 25 communicating with the cylindrical portion 24 is formed, and a plurality of outflow holes 26 communicating from the storage chamber 25 to the front surface of the rotary atomizing head 23 are formed. Yes. The liquid paint supplied to the paint inflow path flows into the storage chamber 25 through the communication hole 20, the paint supply pipe 19, and the cylindrical portion 24 in this order, and from the storage chamber 25 through the outflow hole 26 to the rotary atomizing head. 23 is supplied to the front surface. When electric power is supplied to the electric motor 21 and the rotary atomizing head 23 is driven to rotate, the paint supplied to the front surface of the rotary atomizing head 23 diffuses toward the outer peripheral edge of the rotary atomizing head 23 by centrifugal force. However, it flows in the form of an atomization from the outer peripheral edge of the rotary atomizing head 23 and is ejected (released) radially.

塗装機本体１０の前端部においては、収容空間１２の内周と回転霧化頭２３の外周縁との間に、回転霧化頭２３と同心の円環状の隙間が空いており、この隙間は、塗装機本体１０の前面において、回転霧化頭２３を包囲するように開口するエア噴出口３２となっている。このエア噴出口３２からは、パターンエアが前方へ筒状に噴出するようになっている。このエア噴出口３２は、上記エア流路１４に連通している。   At the front end of the coating machine main body 10, an annular gap concentric with the rotary atomizing head 23 is vacated between the inner periphery of the storage space 12 and the outer peripheral edge of the rotary atomizing head 23. In the front surface of the coating machine main body 10, an air outlet 32 is formed so as to surround the rotary atomizing head 23. From this air jet 32, pattern air is jetted forward in a cylindrical shape. The air outlet 32 communicates with the air flow path 14.

後部収容凹部１７内には、軸流圧縮機２９を回転駆動することによってパターンエアを精製するためのパターンエア生成用モータ２７が固定状態で収容されている。パターンエア生成用モータ２７は、回転霧化頭２３と同心であって後方へ突出する駆動軸２８を有しており、この駆動軸２８の後端部には、軸流圧縮機２９が取り付けられている。軸流圧縮機２９は、保持部材１３の後端よりも後方へ突出した形態であって駆動軸２８に対して一体に回転し得るように固着された回転子３０と、この回転子３０の外周に周方向に間隔を空けて形成した複数の羽根３１とを備えて構成されている。複数の羽根３１は、エア流路１４の後端部に位置するように設けられている。これらの羽根３１は、いずれも、駆動軸２８の軸線と平行な仮想面（図示せず）に対して斜めをなし、且つ駆動軸２８の軸線と直角な仮想面（図示せず）に対しても斜め方向を向いている。換言すると、羽根３１は、回転子３０の回転方向に対して斜めを向いている。   A pattern air generating motor 27 for refining the pattern air by rotating the axial flow compressor 29 is housed in the rear housing recess 17 in a fixed state. The pattern air generating motor 27 has a drive shaft 28 that is concentric with the rotary atomizing head 23 and protrudes rearward. An axial flow compressor 29 is attached to the rear end of the drive shaft 28. ing. The axial compressor 29 has a configuration in which it protrudes rearward from the rear end of the holding member 13 and is fixed so as to be able to rotate integrally with the drive shaft 28, and the outer periphery of the rotor 30. And a plurality of blades 31 formed at intervals in the circumferential direction. The plurality of blades 31 are provided at the rear end of the air flow path 14. Each of these blades 31 is inclined with respect to a virtual plane (not shown) parallel to the axis of the drive shaft 28 and is perpendicular to the virtual plane (not shown) perpendicular to the axis of the drive shaft 28. Also facing diagonally. In other words, the blades 31 are inclined with respect to the rotation direction of the rotor 30.

パターンエア生成用モータ２７に電力が供給されて軸流圧縮機２９が回転駆動されると、塗装機本体１０の後方の空気が、羽根３１によりエア流路１４内に取り込まれ、取り込まれたエアは、エア流路１４内を加圧されながら前方へ流れる。加圧されたエアは、エア流路１４の前端の開口縁と回転霧化頭２３の外周縁との隙間の円環形のエア噴出口３２から、円筒状のパターンエアとして前方へ噴出し、回転霧化頭２３の外周縁から放射状に噴出する霧化塗料を所定の径の大きさの塗料噴流に成形して被塗物（図示せず）に塗着させる。   When electric power is supplied to the pattern air generation motor 27 and the axial flow compressor 29 is rotationally driven, the air behind the coating machine body 10 is taken into the air flow path 14 by the blades 31 and the taken-in air Flows forward while being pressurized in the air flow path 14. The pressurized air is jetted forward as a cylindrical pattern air from an annular air outlet 32 in the gap between the opening edge of the front end of the air flow path 14 and the outer peripheral edge of the rotary atomizing head 23, and rotated. An atomized paint ejected radially from the outer peripheral edge of the atomizing head 23 is formed into a paint jet having a predetermined diameter and applied to an object to be coated (not shown).

本実施形態においては、パターンエアを生成する手段として、電力の供給により回転力を発生させるパターンエア生成用モータ２７と、このパターンエア生成用モータ２７により回転駆動される軸流圧縮機２９とを設けているのであるが、一般に電圧や電流の制御は容易であることから、パターンエア生成用モータ２７に電力を供給する際には、その電圧値や電流値を変動させずに安定した状態で供給することができる。したがって、パターンエア生成用モータ２７の回転数及び軸流圧縮機２９の回転数が安定する。これにより、流量と流速が安定したパターンエアを噴出させることができ、ひいては、良好な塗装を行うことができる。   In the present embodiment, as means for generating pattern air, a pattern air generating motor 27 that generates rotational force by supplying electric power and an axial flow compressor 29 that is rotationally driven by the pattern air generating motor 27 are provided. However, since it is generally easy to control the voltage and current, when power is supplied to the pattern air generation motor 27, the voltage value and current value are kept stable without fluctuation. Can be supplied. Therefore, the rotational speed of the pattern air generating motor 27 and the rotational speed of the axial flow compressor 29 are stabilized. Thereby, the pattern air with which the flow volume and the flow velocity were stabilized can be ejected, and by extension, favorable coating can be performed.

また、電力の供給により回転力を発生する電動モータ２１を設け、この電動モータ２１により回転霧化頭２３を回転駆動するようにしているのであるが、一般に電圧や電流の制御は容易であることから、電動モータ２１に電力を供給する際には、その電圧値や電流値を変動させずに安定した状態で供給することができる。これにより、電動モータ２１の回転数及び回転霧化頭２３の回転数を安定させることができるので、塗料を好適な状態に霧化して、良好な塗装を行うことができる。   In addition, an electric motor 21 that generates a rotational force by supplying electric power is provided, and the rotary atomizing head 23 is driven to rotate by the electric motor 21, but in general, control of voltage and current is easy. Thus, when power is supplied to the electric motor 21, it can be supplied in a stable state without changing its voltage value or current value. Thereby, since the rotation speed of the electric motor 21 and the rotation speed of the rotary atomization head 23 can be stabilized, a coating material can be atomized to a suitable state and favorable coating can be performed.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施態様も本発明の技術的範囲に含まれる。
（１）上記実施形態では、回転霧化頭を回転させるための電動モータと、パターンエアを生成するためのパターンエア生成用モータとを別々に設けたが、電動モータとパターンエア生成用モータは、共通のモータとしてもよい。
（２）上記実施形態では、回転霧化頭を回転駆動する手段として電動モータを用いたが、これに替えて、エアタービン機構を用いて回転霧化頭を回転駆動するようにしてもよい。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the electric motor for rotating the rotary atomizing head and the pattern air generating motor for generating pattern air are separately provided. However, the electric motor and the pattern air generating motor are A common motor may be used.
(2) In the above embodiment, the electric motor is used as the means for rotationally driving the rotary atomizing head. However, instead of this, the rotary atomizing head may be rotationally driven using an air turbine mechanism.

実施形態１の断面図Sectional drawing of Embodiment 1 正面図Front view 背面図Rear view 斜視図Perspective view 図１のＸ−Ｘ線断面図XX sectional view of FIG.

符号の説明Explanation of symbols

１０…塗装機本体
２１…電動モータ
２３…回転霧化頭
２７…パターンエア生成用モータ
２９…軸流圧縮機
３２…エア噴出口 DESCRIPTION OF SYMBOLS 10 ... Coating machine main body 21 ... Electric motor 23 ... Rotary atomization head 27 ... Pattern air generation motor 29 ... Axial flow compressor 32 ... Air jet nozzle

Claims (2)

塗装機本体と、
前記塗装機本体の前端部に設けられて回転駆動される回転霧化頭と、
前記塗装機本体の前面において前記回転霧化頭を包囲するように開口し、筒状のパターンエアを前方へ噴出させるエア噴出口とを備え、
遠心力により前記回転霧化頭の外周縁から放出された霧化塗料を、前記パターンエアにより所定のパターンに成形して前方へ送出するようになっている回転霧化塗装機において、
電力により回転力を発生させるパターンエア生成用モータと、
前記パターンエア生成用モータにより回転駆動され、前記塗装機本体の後方から取り込んだ空気を、前記エア噴出口に圧送して前記パターンエアとして噴出させる軸流圧縮機とが設けられていることを特徴とする回転霧化塗装機。 The main body of the coating machine,
A rotary atomizing head that is provided at the front end of the coating machine body and is driven to rotate;
An opening that surrounds the rotary atomizing head in front of the coating machine main body, and an air outlet that ejects cylindrical pattern air forward,
In the rotary atomizing coating machine configured to send the atomized paint released from the outer peripheral edge of the rotary atomizing head by centrifugal force into the predetermined pattern by the pattern air, and forward it,
A motor for generating pattern air that generates rotational force by electric power;
An axial flow compressor is provided that is rotationally driven by the pattern air generating motor and pumps air taken in from the rear of the coating machine main body to the air outlet and ejects it as the pattern air. Rotating atomizing coating machine. 電力により回転力を発生して前記回転霧化頭を回転駆動する電動モータが設けられていることを特徴とする請求項１記載の回転霧化塗装機。   2. The rotary atomizing coating machine according to claim 1, further comprising an electric motor that generates rotational force by electric power and rotationally drives the rotary atomizing head.
JP2008200738A 2008-08-04 2008-08-04 Rotary atomizer Expired - Fee Related JP5430894B2 (en)

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