JP5538938B2 - Coating gun cleaning method and apparatus - Google Patents

Coating gun cleaning method and apparatus Download PDF

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Publication number
JP5538938B2
JP5538938B2 JP2010028999A JP2010028999A JP5538938B2 JP 5538938 B2 JP5538938 B2 JP 5538938B2 JP 2010028999 A JP2010028999 A JP 2010028999A JP 2010028999 A JP2010028999 A JP 2010028999A JP 5538938 B2 JP5538938 B2 JP 5538938B2
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Prior art keywords
cleaning
discharge hole
paint
cleaning liquid
atomizing head
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JP2011161399A (en
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崇 脇本
正明 庄司
裕 針谷
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2010028999A priority Critical patent/JP5538938B2/en
Priority to PCT/JP2011/052839 priority patent/WO2011099547A1/en
Priority to CN201180009255.9A priority patent/CN102762310B/en
Priority to US13/522,931 priority patent/US20120291819A1/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
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles

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  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Description

本発明は、回転霧化頭を洗浄対象とする塗装ガンの洗浄技術の改良に関する。   The present invention relates to an improvement in a coating gun cleaning technique that uses a rotary atomizing head as a cleaning target.

例えば、塗装対象の製品に応じて、１つの塗装ガンで複数種類の塗料を吐出することがある。塗料の種類を切り換える際、塗装ガンに残った塗料を取り除くため、塗装ガンの先端に設けられた回転霧化頭を洗浄する技術が提案されている（例えば、特許文献１（図４）参照。）。   For example, depending on the product to be painted, a plurality of types of paints may be discharged with a single painting gun. In order to remove the paint remaining on the coating gun when switching the type of paint, a technique for cleaning the rotary atomizing head provided at the tip of the coating gun has been proposed (see, for example, Patent Document 1 (FIG. 4)). ).

この特許文献１の技術を図面に基づいて以下に説明する。
図７に示されるように、塗装ガンの先端に回転可能に設けられた回転霧化頭１００は、回転軸の近傍に塗料を吐出する中心部塗料吐出孔１０１を有すると共に回転軸に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔１０２を有している。 The technique of this patent document 1 is demonstrated below based on drawing.
As shown in FIG. 7, the rotary atomizing head 100 provided rotatably at the tip of the coating gun has a central paint discharge hole 101 for discharging paint in the vicinity of the rotary shaft and has a cone with respect to the rotary shaft. It has an outer coating material discharge hole 102 that discharges the coating material inclined so as to exhibit a shape.

回転霧化頭１００を洗浄する際、洗浄ノズル１０３の中心軸が回転霧化頭１００の回転軸に重なるようにして、中心部塗料吐出孔１０１に洗浄ノズル１０３を対向配置する。洗浄ノズル１０３から中心部塗料吐出孔１０１に向けて洗浄液を吐出する。洗浄液の一部は、中心部塗料吐出孔１０１から吹き込まれ回転霧化頭１００の裏側にある塗料溜まり１０４に進入して塗料１０５を洗い流す。そして、洗浄液は、塗料溜まり１０４内を洗浄し、外側塗料吐出孔１０２から排出される。また、洗浄液の残部は、回転霧化頭１００の塗料薄膜化面１０６に沿って流れ、塗料薄膜化面１０６を洗浄する。   When cleaning the rotary atomizing head 100, the cleaning nozzle 103 is disposed opposite to the central paint discharge hole 101 so that the central axis of the cleaning nozzle 103 overlaps the rotational axis of the rotary atomizing head 100. The cleaning liquid is discharged from the cleaning nozzle 103 toward the central paint discharge hole 101. A part of the cleaning liquid is blown from the central paint discharge hole 101 and enters the paint reservoir 104 on the back side of the rotary atomizing head 100 to wash away the paint 105. The cleaning liquid cleans the inside of the paint reservoir 104 and is discharged from the outer paint discharge hole 102. Further, the remaining portion of the cleaning liquid flows along the paint thinning surface 106 of the rotary atomizing head 100 to clean the paint thinning surface 106.

しかし、中心部塗料吐出孔１０１は、孔の数が少なく、流入する洗浄液の量が少ないため、塗料溜まり１０４内の洗浄の工数が掛かる。また、中心部塗料吐出孔１０１の向きによっては、洗浄液が塗料フィードチューブ１０７に逆流する虞もある。
そこで、洗浄液が塗料フィードチューブ１０７に逆流する虞がなく、回転霧化頭１００の洗浄効率を向上させることができる塗装ガンの洗浄技術が求められている。 However, since the center paint discharge hole 101 has a small number of holes and a small amount of the cleaning liquid that flows in, the number of cleaning steps in the paint reservoir 104 is increased. Further, depending on the orientation of the central paint discharge hole 101, the cleaning liquid may flow back to the paint feed tube 107.
Accordingly, there is a need for a coating gun cleaning technique that can improve the cleaning efficiency of the rotary atomizing head 100 without causing the cleaning liquid to flow back to the paint feed tube 107.

特開平１１−２１６４０３号公報Japanese Patent Laid-Open No. 11-216403

本発明は、洗浄液が塗料フィードチューブに逆流する虞がなく、回転霧化頭の洗浄効率を向上させることができる塗装ガンの洗浄技術を提供することを課題とする。   It is an object of the present invention to provide a coating gun cleaning technique that can improve the cleaning efficiency of the rotary atomizing head without causing the cleaning liquid to flow back to the paint feed tube.

請求項１に係る発明は、塗装ガンの先端に回転可能に設けられた回転軸の近傍に塗料を吐出する中心部塗料吐出孔が設けられると共に前記回転軸に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔を有する回転霧化頭を洗浄対象とする塗装ガンの洗浄方法であって、洗浄液を噴射する洗浄ノズルの軸が前記外側塗料吐出孔の中心軸に重なるようにして、前記外側塗料吐出孔に洗浄ノズルを対向配置する工程と、前記洗浄ノズルから前記外側塗料吐出孔に洗浄液を吹き込み、前記中心部塗料吐出孔又は前記外側塗料吐出孔から排出することで前記回転霧化頭の裏側を洗浄する工程と、からなることを特徴とする。   The invention according to claim 1 is provided such that a central part paint discharge hole for discharging paint is provided in the vicinity of a rotary shaft rotatably provided at the tip of the coating gun and is inclined so as to exhibit a conical shape with respect to the rotary shaft. A coating gun cleaning method for cleaning a rotary atomizing head having an outer paint discharge hole for discharging a paint so that a shaft of a cleaning nozzle for injecting a cleaning liquid overlaps a central axis of the outer paint discharge hole. A step of disposing a cleaning nozzle opposite to the outer paint discharge hole, and blowing a cleaning liquid from the cleaning nozzle into the outer paint discharge hole and discharging it from the central paint discharge hole or the outer paint discharge hole. And a step of cleaning the back side of the rotary atomizing head.

請求項２に係る発明は、塗装ガンの先端に回転可能に設けられた回転軸の近傍に塗料を吐出する中心部塗料吐出孔が設けられると共に回転軸に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔を有する回転霧化頭を洗浄対象とする塗装ガンの洗浄装置であって、塗装ガンを上から下向きに差し込むことができる筒形容器と、この筒形容器の内周面に、外側塗料吐出孔の中心軸に重なるようにして取付けられ外側塗料吐出孔へ洗浄液を噴射する洗浄ノズルと、からなることを特徴とする。   According to a second aspect of the present invention, a paint discharge hole for discharging a paint is provided in the vicinity of a rotation shaft rotatably provided at the tip of the coating gun, and is inclined so as to exhibit a conical shape with respect to the rotation shaft. A coating gun cleaning device for cleaning a rotary atomizing head having an outer paint discharge hole for discharging paint, and a cylindrical container in which the coating gun can be inserted downward from above, and the cylindrical container And a cleaning nozzle that is attached to the inner peripheral surface so as to overlap with the central axis of the outer paint discharge hole and injects a cleaning liquid into the outer paint discharge hole.

請求項３に係る発明は、洗浄ノズルから噴射する洗浄液が塗装ガンに当たらないときにこの洗浄液を筒形容器内へ落下させる飛散防止部材が、洗浄ノズルの軸上に置かれるようにして筒形容器に付設されていることを特徴とする。   According to a third aspect of the present invention, there is provided a cylindrical container in which a scattering preventing member for dropping the cleaning liquid into the cylindrical container when the cleaning liquid sprayed from the cleaning nozzle does not hit the coating gun is placed on the shaft of the cleaning nozzle. It is attached to the vessel.

請求項４に係る発明では、洗浄ノズルの先端形状は、真円であることを特徴とする。   The invention according to claim 4 is characterized in that the tip shape of the cleaning nozzle is a perfect circle.

請求項５に係る発明では、洗浄用ノズルは、回転霧化頭の円周に沿って複数配置されていることを特徴とする。   The invention according to claim 5 is characterized in that a plurality of cleaning nozzles are arranged along the circumference of the rotary atomizing head.

請求項１に係る発明では、洗浄ノズルの軸が外側塗料吐出孔の中心軸に重なるようにして、外側塗料吐出孔に洗浄ノズルを対向配置し、洗浄ノズルから外側塗料吐出孔に洗浄液を吹き込み、中心部塗料吐出孔又は外側塗料吐出孔から排出することで回転霧化頭の裏側を洗浄する。中心部塗料吐出孔に比較して外側塗料吐出孔の数は多いので、外側塗料吐出孔からであれば大量の洗浄液を、回転霧化頭の裏側にある塗料溜まりに吹き込むことができ、短い工数で洗浄することができる。
加えて、洗浄液を外側塗料吐出孔から吹き込めば、回転霧化頭の中心を通る塗料フィードチューブに洗浄液が逆流することもない。結果、洗浄液が塗料フィードチューブに逆流する虞がなく、回転霧化頭の洗浄効率を向上させることができる。 In the invention according to claim 1, the cleaning nozzle is disposed opposite to the outer paint discharge hole so that the axis of the cleaning nozzle overlaps the central axis of the outer paint discharge hole, and the cleaning liquid is blown into the outer paint discharge hole from the cleaning nozzle, The back side of the rotary atomizing head is cleaned by discharging from the central paint discharge hole or the outer paint discharge hole. Since the number of outer paint discharge holes is larger than that of the central paint discharge hole, a large amount of cleaning liquid can be blown into the paint reservoir on the back side of the rotary atomizing head from the outer paint discharge hole. Can be washed with.
In addition, if the cleaning liquid is blown from the outer paint discharge hole, the cleaning liquid does not flow back into the paint feed tube passing through the center of the rotary atomizing head. As a result, there is no possibility that the cleaning liquid flows backward to the paint feed tube, and the cleaning efficiency of the rotary atomizing head can be improved.

請求項２に係る発明では、洗浄装置は、塗装ガンを上から下向きに差し込むことができる筒形容器と、この筒形容器の内周面に、外側塗料吐出孔の中心軸に重なるようにして取付けられ外側塗料吐出孔へ洗浄液を噴射する洗浄ノズルと、を備えている。中心部塗料吐出孔に比較して外側塗料吐出孔の数は多いので、外側塗料吐出孔からであれば大量の洗浄液を、回転霧化頭の裏側にある塗料溜まりに吹き込むことができ、短い工数で洗浄することができる。
加えて、洗浄液を外側塗料吐出孔から吹き込めば、回転霧化頭の中心を通る塗料フィードチューブに洗浄液が逆流することもない。
加えて、筒形容器があるので、洗浄液が周辺に飛散することを防止することができる。 In the invention according to claim 2, the cleaning device has a cylindrical container into which the coating gun can be inserted downward, and an inner peripheral surface of the cylindrical container so as to overlap the central axis of the outer paint discharge hole. A cleaning nozzle that is attached and injects a cleaning liquid into the outer paint discharge hole. Since the number of outer paint discharge holes is larger than that of the central paint discharge hole, a large amount of cleaning liquid can be blown into the paint reservoir on the back side of the rotary atomizing head from the outer paint discharge hole. Can be washed with.
In addition, if the cleaning liquid is blown from the outer paint discharge hole, the cleaning liquid does not flow back into the paint feed tube passing through the center of the rotary atomizing head.
In addition, since there is a cylindrical container, it is possible to prevent the cleaning liquid from being scattered around.

請求項３に係る発明では、洗浄ノズルから噴射する洗浄液が塗装ガンに当たらないときにこの洗浄液を筒形容器内へ落下させる飛散防止部材が、洗浄ノズルの軸上に置かれるようにして筒形容器に付設されている。飛散防止部材が、洗浄ノズルの軸上にあるので、誤操作等で洗浄液が吐出しても洗浄液が飛散することを防ぐことができる。   In the invention according to claim 3, the scattering prevention member for dropping the cleaning liquid into the cylindrical container when the cleaning liquid sprayed from the cleaning nozzle does not hit the coating gun is disposed on the shaft of the cleaning nozzle. It is attached to the vessel. Since the splash preventing member is on the axis of the cleaning nozzle, it is possible to prevent the cleaning liquid from being scattered even if the cleaning liquid is discharged due to an erroneous operation or the like.

請求項４に係る発明では、洗浄ノズルの先端形状は、真円である。洗浄液の直進性が向上するので、回転霧化頭の裏側にある塗料溜まりへ流入する洗浄液の流量が増加し、洗浄効率を向上させることができる。   In the invention which concerns on Claim 4, the front-end | tip shape of a washing nozzle is a perfect circle. Since the straightness of the cleaning liquid is improved, the flow rate of the cleaning liquid flowing into the paint reservoir on the back side of the rotary atomizing head is increased, and the cleaning efficiency can be improved.

請求項５に係る発明では、洗浄用ノズルは、回転霧化頭の円周に沿って複数配置されている。外側塗料吐出孔は複数個配置されているので、複数個の孔から洗浄液を流入させることができ、洗浄効率を向上させることができる。
加えて、回転霧化頭を回転させることなく、洗浄液を回転霧化頭の裏側にある塗料溜まりへ流入させることができるので、大量の洗浄液の流入させることができ、洗浄効率をより一層向上させることができる。 In the invention according to claim 5, a plurality of cleaning nozzles are arranged along the circumference of the rotary atomizing head. Since a plurality of outer paint discharge holes are arranged, the cleaning liquid can be introduced from the plurality of holes, and the cleaning efficiency can be improved.
In addition, since the cleaning liquid can be allowed to flow into the paint reservoir on the back side of the rotary atomizing head without rotating the rotary atomizing head, a large amount of cleaning liquid can be allowed to flow, further improving the cleaning efficiency. be able to.

本発明に係る塗装ガンの洗浄装置が使用例を説明する図である。It is a figure explaining the cleaning gun cleaning apparatus according to the present invention. 本発明に係る塗装ガンの洗浄装置の断面図である。It is sectional drawing of the washing | cleaning apparatus of the coating gun which concerns on this invention. 図１の３−３線断面図である。FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. 本発明の要部を説明する図である。It is a figure explaining the principal part of this invention. 本発明に係る塗装ガンの洗浄装置の作用を説明する図である。It is a figure explaining the effect | action of the washing | cleaning apparatus of the coating gun which concerns on this invention. 図２の変更例を説明する図である。It is a figure explaining the example of a change of FIG. 従来の技術の基本原理を説明する図である。It is a figure explaining the basic principle of the prior art.

本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。   Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

先ず、本発明の実施例を図面に基づいて説明する。
図１に示されるように、塗装機設備１０は、塗装機１１と、塗装ガンの洗浄装置２０とからなる。
塗装機１１は、ベース部１２と、このベース部１２の上部に設けられている産業用ロボット１３と、この産業用ロボット１３のアーム部１４の先端に設けられている塗装ガン１５とからなる。 First, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the painting machine facility 10 includes a painting machine 11 and a painting gun cleaning device 20.
The coating machine 11 includes a base portion 12, an industrial robot 13 provided on the upper portion of the base portion 12, and a coating gun 15 provided at the tip of the arm portion 14 of the industrial robot 13.

塗装ガンの洗浄装置２０は、ベース部１２の側壁１６にステー１７を介して取付けられている。また、塗装ガンの洗浄装置２０の下部には、洗浄後の洗浄液を受ける洗浄液パン１８が配置されている。   The coating gun cleaning device 20 is attached to the side wall 16 of the base portion 12 via a stay 17. A cleaning liquid pan 18 for receiving the cleaning liquid after cleaning is disposed below the cleaning device 20 for the coating gun.

次に塗装ガンの洗浄装置２０を断面図に基づいて説明する。
図２に示されるように、塗装ガンの洗浄装置２０は、塗装ガン１５を上から下向きに差し込むことができる筒形容器２１と、この筒形容器２１の内周面２２にノズル用ステー２３を介して取付けられ洗浄液を噴射する洗浄ノズル２４と、円筒容器２１の下部に設けられ洗浄後の洗浄液を受ける洗浄液パン１８と、からなる。洗浄ノズル２４から洗浄液を噴射することで、塗装ガン１５の先端に回転可能に設けられている回転霧化頭２５を洗浄することができる。 Next, the coating gun cleaning device 20 will be described with reference to cross-sectional views.
As shown in FIG. 2, the coating gun cleaning device 20 includes a cylindrical container 21 into which the coating gun 15 can be inserted downward, and a nozzle stay 23 on the inner peripheral surface 22 of the cylindrical container 21. And a cleaning nozzle 24 which is attached to the cylindrical container 21 and receives the cleaning liquid after cleaning. By spraying the cleaning liquid from the cleaning nozzle 24, the rotary atomizing head 25 that is rotatably provided at the tip of the coating gun 15 can be cleaned.

また、洗浄ノズル２４から噴射する洗浄液が、塗装ガン１５に当たらないときにこの洗浄液を筒形容器２１内へ落下させる飛散防止部材２６が、洗浄ノズル２４の軸２７上に置かれるようにして筒形容器２１に付設されている。これにより、洗浄液が外部に飛散することを防ぐことができる。   Further, a scattering preventing member 26 that drops the cleaning liquid into the cylindrical container 21 when the cleaning liquid sprayed from the cleaning nozzle 24 does not hit the coating gun 15 is placed on the shaft 27 of the cleaning nozzle 24. Attached to the shape container 21. Thereby, it is possible to prevent the cleaning liquid from being scattered outside.

次に外面用洗浄ノズルについて説明する。
図３に示されるように、塗装ガンの洗浄装置２０は、筒形容器２１の外周面３１に外面用ノズルステー３２を介して回転霧化頭２５の外面３３に洗浄液を噴射する外面用洗浄ノズル３４が取付けられている。外面用洗浄ノズル３４は、筒形容器２１の貫通孔３５を通って筒形容器２１の内側に延ばされている。外面用洗浄ノズル３４の軸３６上に回転霧化頭２５の外面３３が配置されるように、外面用洗浄ノズル３４が設けられている。これにより、回転霧化頭２５の外面３３を洗浄することができる。洗浄後の洗浄液は円筒容器２１内を流れ落ち、洗浄液パン１８に回収される。 Next, the outer surface cleaning nozzle will be described.
As shown in FIG. 3, the coating gun cleaning device 20 includes an outer surface cleaning nozzle that injects a cleaning liquid onto the outer surface 33 of the rotary atomizing head 25 via an outer surface nozzle stay 32 on the outer peripheral surface 31 of the cylindrical container 21. 34 is attached. The outer surface cleaning nozzle 34 extends through the through hole 35 of the cylindrical container 21 to the inside of the cylindrical container 21. The outer surface cleaning nozzle 34 is provided so that the outer surface 33 of the rotary atomizing head 25 is disposed on the shaft 36 of the outer surface cleaning nozzle 34. Thereby, the outer surface 33 of the rotary atomizing head 25 can be cleaned. The cleaning liquid after cleaning flows down in the cylindrical container 21 and is collected in the cleaning liquid pan 18.

次に回転霧化頭２５の形状について説明する。
図４に示されるように、回転霧化頭２５は、塗装ガン１５の先端に回転可能に設けられている。回転霧化頭２５の回転軸３７の近傍に塗料を吐出する中心部塗料吐出孔４１が設けられると共に、回転軸３７に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔４２を有する。 Next, the shape of the rotary atomizing head 25 will be described.
As shown in FIG. 4, the rotary atomizing head 25 is rotatably provided at the tip of the coating gun 15. A central paint discharge hole 41 for discharging paint is provided in the vicinity of the rotary shaft 37 of the rotary atomizing head 25, and an outer paint discharge hole for discharging the paint inclined to form a conical shape with respect to the rotary shaft 37. 42.

回転霧化頭２５は、アウター部材４３と、このアウター部材４３との間に回転霧化頭２５の裏側としての塗料溜まり４４を構成するインナー部材４５と、アウター部材４３に塗料を導く塗料フィードチューブ４６とからなる。
塗料溜まり４４は、釣り鐘形状を呈しており、塗料溜まりの側壁４７は外側塗料吐出孔４２に滑らかに繋がっている。これにより、塗料を円滑に吐出することができる。 The rotary atomizing head 25 includes an outer member 43, an inner member 45 constituting a paint reservoir 44 as a back side of the rotary atomizing head 25, and a paint feed tube for guiding the paint to the outer member 43. 46.
The paint reservoir 44 has a bell shape, and the side wall 47 of the paint reservoir is smoothly connected to the outer paint discharge hole 42. Thereby, a coating material can be discharged smoothly.

洗浄ノズル２４は、洗浄ノズルの軸２７が外側塗料吐出孔４２の中心軸４８に重なっている。塗料フィードチューブから洗浄液を流しても、塗料溜まりの側壁４７の洗浄には工数を要するが、洗浄液を洗浄ノズル２４から外側塗料吐出孔４２に円滑に流入させれば、塗料溜まりの側壁４７を効率良く洗浄することができる。
なお、洗浄ノズルの軸２７は回転軸３７に対して角αを為している。また、回転霧化頭２５の底面５１から、洗浄ノズル２４の先端までは距離Ｌである。 In the cleaning nozzle 24, the shaft 27 of the cleaning nozzle overlaps the central shaft 48 of the outer paint discharge hole 42. Even if the cleaning liquid is allowed to flow from the paint feed tube, it takes time to clean the paint reservoir side wall 47. However, if the cleaning liquid smoothly flows from the cleaning nozzle 24 into the outer paint discharge hole 42, the paint reservoir side wall 47 can be efficiently used. Can be cleaned well.
Note that the cleaning nozzle shaft 27 forms an angle α with respect to the rotation shaft 37. The distance from the bottom surface 51 of the rotary atomizing head 25 to the tip of the cleaning nozzle 24 is a distance L.

以上に述べた塗装ガンの洗浄装置２０の作用を次に述べる。
図５（ａ）は比較例の塗装ガンの洗浄装置１２０の作用図であり、洗浄ノズル１２１は、回転霧化頭１２２の回転軸１２３上に、洗浄ノズル１２１が配置されている。
洗浄ノズル１２１から、矢印（１）のように洗浄液を吐出する。洗浄液の一部は、回転霧化頭１２２の底面１２４で矢印（２）のように跳ね返り、他の一部は矢印（３）のように流れて底面１２４を洗浄する。 The operation of the coating gun cleaning device 20 described above will now be described.
FIG. 5A is an operation diagram of the coating gun cleaning device 120 of the comparative example, and the cleaning nozzle 121 is disposed on the rotating shaft 123 of the rotary atomizing head 122.
The cleaning liquid is discharged from the cleaning nozzle 121 as indicated by the arrow (1). A part of the cleaning liquid rebounds as indicated by the arrow (2) on the bottom surface 124 of the rotary atomizing head 122, and the other part flows as indicated by the arrow (3) to clean the bottom surface 124.

洗浄液の残りは、中心部塗料吐出孔１２５から吹き込まれ、矢印（４）のように流れて、回転霧化頭１２２の裏側としての塗料溜まり１２６を洗浄し、矢印（５）のように外側塗料吐出孔１２７から外部へ排出される。
比較例の洗浄装置１２０では、塗料溜まり１２６に吹き込まれる洗浄液の量が少ないため、洗浄の工数が掛かり洗浄効率が良くない。 The remainder of the cleaning liquid is blown from the central paint discharge hole 125 and flows as indicated by an arrow (4), and the paint reservoir 126 as the back side of the rotary atomizing head 122 is cleaned, and the outer paint as indicated by an arrow (5). The ink is discharged from the discharge hole 127 to the outside.
In the cleaning device 120 of the comparative example, since the amount of the cleaning liquid blown into the paint reservoir 126 is small, the number of cleaning steps is increased and the cleaning efficiency is not good.

図５（ｂ）は実施例の塗装ガンの洗浄装置２０の作用図であり、洗浄ノズルの軸（図４、符号２７）が外側塗料吐出孔４２の中心軸（図４、符号４８）に重なるようにして、外側塗料吐出孔４２に洗浄ノズル２４を対向配置する（洗浄ノズル対向配置工程）。   FIG. 5B is an operation diagram of the coating gun cleaning apparatus 20 of the embodiment, and the axis of the cleaning nozzle (FIG. 4, reference numeral 27) overlaps the central axis (FIG. 4, reference numeral 48) of the outer paint discharge hole 42. In this manner, the cleaning nozzle 24 is disposed opposite to the outer paint discharge hole 42 (cleaning nozzle facing arrangement step).

洗浄ノズル２４から外側塗料吐出孔４２に矢印（６）のように洗浄液を吹き込み、矢印（７）のように回転霧化頭２５の裏側としての塗料溜まり４４を洗浄し、矢印（８）のように中心部塗料吐出孔４１から排出する（洗浄工程）。塗料溜まりに入った洗浄液の一部は、外側塗料吐出孔４２から矢印（９）のように排出される。また、洗浄ノズル２４から噴射された洗浄液の一部は、矢印（１０）のように流れ、回転霧化頭２５の底面５１を洗浄する。   The cleaning liquid is blown from the cleaning nozzle 24 into the outer paint discharge hole 42 as indicated by the arrow (6), and the paint reservoir 44 as the back side of the rotary atomizing head 25 is cleaned as indicated by the arrow (7), as indicated by the arrow (8). Then, the liquid is discharged from the central paint discharge hole 41 (cleaning process). A part of the cleaning liquid that has entered the paint reservoir is discharged from the outer paint discharge hole 42 as indicated by an arrow (9). A part of the cleaning liquid ejected from the cleaning nozzle 24 flows as indicated by an arrow (10), and cleans the bottom surface 51 of the rotary atomizing head 25.

洗浄液は、外側塗料吐出孔４２から吹き込まれるので、塗料溜まりの側壁４７を円滑に流れ、効率良く洗浄することができる。
また、洗浄ノズル２４の先端形状は、真円である。これにより塗料溜まりへ流入する洗浄液の量を増加させることができる。
なお、洗浄用ノズル２４は外側塗料吐出孔４２を指向するように回転霧化頭２５の円周に沿って複数配置しても差し支えない。洗浄ノズル２４を複数配置することで、塗料溜まり４４へ流入する洗浄液の量を増加させることができる。 Since the cleaning liquid is blown from the outer coating material discharge hole 42, the cleaning solution flows smoothly through the side wall 47 of the coating material pool, and can be cleaned efficiently.
The tip shape of the cleaning nozzle 24 is a perfect circle. As a result, the amount of cleaning liquid flowing into the paint reservoir can be increased.
Note that a plurality of cleaning nozzles 24 may be arranged along the circumference of the rotary atomizing head 25 so as to face the outer paint discharge hole 42. By disposing a plurality of cleaning nozzles 24, the amount of cleaning liquid flowing into the paint reservoir 44 can be increased.

次に図２の別形態を説明する。なお、図２に示した構成と同一構成については同一符号を付け、詳細説明は省略する。
図６に示されるように、飛散防止部材は、その内側に湾曲部５２を有している。湾曲しているので、洗浄液を内側に落として洗浄液の飛散を防止することができる。 Next, another embodiment of FIG. 2 will be described. In addition, the same code | symbol is attached about the same structure as the structure shown in FIG. 2, and detailed description is abbreviate | omitted.
As shown in FIG. 6, the scattering prevention member has a curved portion 52 inside thereof. Since it is curved, the cleaning liquid can be dropped inward to prevent the cleaning liquid from scattering.

上記図４及び図５（ｂ）に示したように、塗装ガン１５の先端に回転可能に設けられた回転軸３７の近傍に塗料を吐出する中心部塗料吐出孔４１が設けられると共に回転軸３７に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔４２を有する回転霧化頭２５を洗浄対象とする塗装ガン１５の洗浄方法であって、洗浄液を噴射する洗浄ノズル２４の軸が外側塗料吐出孔４２の中心軸４８に重なるようにして、外側塗料吐出孔４２に洗浄ノズル２４を対向配置する工程と、洗浄ノズル２４から外側塗料吐出孔４２に洗浄液を吹き込み、中心部塗料吐出孔４１又は外側塗料吐出孔４２から排出することで回転霧化頭２５の裏側４４を洗浄する工程と、からなる。   As shown in FIG. 4 and FIG. 5B, a central paint discharge hole 41 for discharging paint is provided in the vicinity of the rotary shaft 37 rotatably provided at the tip of the coating gun 15 and the rotary shaft 37. The cleaning nozzle 24 is a method of cleaning the coating gun 15 that targets the rotary atomizing head 25 having the outer paint discharge hole 42 that is inclined so as to exhibit a conical shape and discharges the paint. The cleaning nozzle 24 is disposed so as to face the outer paint discharge hole 42 so that the shaft of the outer paint discharge hole 42 is overlapped with the central axis 48, and the cleaning liquid is blown into the outer paint discharge hole 42 from the cleaning nozzle 24. And a step of cleaning the back side 44 of the rotary atomizing head 25 by discharging from the paint discharge hole 41 or the outer paint discharge hole 42.

この構成により、中心部塗料吐出孔４１に比較して外側塗料吐出孔４２の数は多いので、外側塗料吐出孔４２からであれば大量の洗浄液を、回転霧化頭２５の裏側にある塗料溜まり４４に吹き込むことができ、短い工数で洗浄することができる。
加えて、洗浄液を外側塗料吐出孔４２から吹き込めば、回転霧化頭２５の中心を通る塗料フィードチューブ４６に洗浄液が逆流することもない。結果、洗浄液が塗料フィードチューブ４６に逆流する虞がなく、回転霧化頭２５の洗浄効率を向上させることができる。 With this configuration, the number of outer paint discharge holes 42 is larger than that of the central paint discharge hole 41, so that a large amount of cleaning liquid can be collected from the outer paint discharge holes 42 on the back side of the rotary atomizing head 25. 44 can be blown in and can be cleaned in a short man-hour.
In addition, if the cleaning liquid is blown from the outer paint discharge hole 42, the cleaning liquid does not flow back to the paint feed tube 46 passing through the center of the rotary atomizing head 25. As a result, there is no possibility that the cleaning liquid flows back to the paint feed tube 46, and the cleaning efficiency of the rotary atomizing head 25 can be improved.

上記図１〜図４に示したように、塗装ガン１５の先端に回転可能に設けられた回転軸３７の近傍に塗料を吐出する中心部塗料吐出孔４１が設けられると共に回転軸に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔４２を有する回転霧化頭２５を洗浄対象とする塗装ガンの洗浄装置２０であって、塗装ガン１５を上から下向きに差し込むことができる筒形容器２１と、この筒形容器２１の内周面２２に、外側塗料吐出孔４２の中心軸４８に重なるようにして取付けられ外側塗料吐出孔４２へ洗浄液を噴射する洗浄ノズル２４と、からなる。   As shown in FIG. 1 to FIG. 4, a central part paint discharge hole 41 for discharging paint is provided in the vicinity of the rotary shaft 37 rotatably provided at the tip of the coating gun 15 and is conical with respect to the rotary shaft. A coating gun cleaning device 20 for cleaning a rotary atomizing head 25 having an outer coating discharge hole 42 that is inclined so as to exhibit a shape and discharges coating, and the coating gun 15 can be inserted downward from above. A cylindrical container 21 that can be formed, and a cleaning nozzle 24 that is attached to the inner peripheral surface 22 of the cylindrical container 21 so as to overlap the central axis 48 of the outer paint discharge hole 42 and injects a cleaning liquid into the outer paint discharge hole 42; Consists of.

この構成により、中心部塗料吐出孔４１に比較して外側塗料吐出孔４２の数は多いので、外側塗料吐出孔４２からであれば大量の洗浄液を、回転霧化頭２５の裏側にある塗料溜まり４４に吹き込むことができ、短い工数で洗浄することができる。加えて、洗浄液を外側塗料吐出孔４２から吹き込めば、回転霧化頭２５の中心を通る塗料フィードチューブ４６に洗浄液が逆流することもない。加えて、筒形容器２１があるので、洗浄液が周辺に飛散することを防止することができる。   With this configuration, the number of outer paint discharge holes 42 is larger than that of the central paint discharge hole 41, so that a large amount of cleaning liquid can be collected from the outer paint discharge holes 42 on the back side of the rotary atomizing head 25. 44 can be blown in and can be cleaned in a short man-hour. In addition, if the cleaning liquid is blown from the outer paint discharge hole 42, the cleaning liquid does not flow back to the paint feed tube 46 passing through the center of the rotary atomizing head 25. In addition, since the cylindrical container 21 is present, it is possible to prevent the cleaning liquid from being scattered around.

上記図２、図６に示したように、洗浄ノズル２４から噴射する洗浄液が塗装ガン１５に当たらないときにこの洗浄液を筒形容器２１内へ落下させる飛散防止部材２６が、洗浄ノズルの軸２７上に置かれるようにして筒形容器２１に付設されている。
この構成により、誤操作等で洗浄液が吐出しても洗浄液が飛散することを防ぐことができる。 As shown in FIGS. 2 and 6, the anti-scattering member 26 for dropping the cleaning liquid into the cylindrical container 21 when the cleaning liquid sprayed from the cleaning nozzle 24 does not hit the coating gun 15 is provided with the cleaning nozzle shaft 27. It is attached to the cylindrical container 21 so that it may be placed on top.
With this configuration, the cleaning liquid can be prevented from being scattered even if the cleaning liquid is discharged due to an erroneous operation or the like.

上記図４、図５に示したように、洗浄ノズル２４の先端形状は、真円である。
この構成により、洗浄液の直進性が向上するので、回転霧化頭２５の裏側にある塗料溜まり４４へ流入する洗浄液の流量が増加し、洗浄効率を向上させることができる。 As shown in FIGS. 4 and 5, the tip shape of the cleaning nozzle 24 is a perfect circle.
With this configuration, since the straightness of the cleaning liquid is improved, the flow rate of the cleaning liquid flowing into the paint reservoir 44 on the back side of the rotary atomizing head 25 is increased, and the cleaning efficiency can be improved.

上記図５に示したように、洗浄用ノズル２４は、回転霧化頭２５の円周に沿って複数配置されている。
この構成により、複数個の孔４２から洗浄液を流入させることができ、洗浄効率を向上させることができる。加えて、回転霧化頭２５を回転させることなく、洗浄液を回転霧化頭２５の裏側にある塗料溜まり４４へ流入させることができるので、大量の洗浄液の流入させることができ、洗浄効率をより一層向上させることができる。 As shown in FIG. 5, a plurality of cleaning nozzles 24 are arranged along the circumference of the rotary atomizing head 25.
With this configuration, the cleaning liquid can be introduced from the plurality of holes 42, and the cleaning efficiency can be improved. In addition, since the cleaning liquid can be caused to flow into the paint reservoir 44 on the back side of the rotary atomizing head 25 without rotating the rotary atomizing head 25, a large amount of cleaning liquid can be allowed to flow, and the cleaning efficiency is further improved. This can be further improved.

尚、本発明に係る塗装ガンの洗浄技術は、産業用ロボットに取付け塗装ガンに適用したが、これに限定されず、塗装ガンの回転霧化頭を洗浄するのであれば、他の塗装ガンに適用することは差し支えない。   The painting gun cleaning technology according to the present invention is applied to an industrial robot and applied to a painting gun. However, the present invention is not limited to this. It can be applied.

本発明の装飾体の貼付け装置は、回転霧化頭を洗浄対象とする塗装ガンの洗浄に好適である。   The decorative body sticking device of the present invention is suitable for cleaning a coating gun whose cleaning target is a rotary atomizing head.

１５…塗装ガン、１８…洗浄液パン、２０…塗装ガンの洗浄装置、２１…筒形容器、２２…内周面、２４…洗浄ノズル、２５…回転霧化頭、２６…飛散防止部材、２７…洗浄ノズルの軸、３７…回転霧化頭の回転軸、４１…中心部塗料吐出孔体、４２…外側塗料吐出孔、４８…外側塗料吐出孔の中心軸。   DESCRIPTION OF SYMBOLS 15 ... Coating gun, 18 ... Cleaning liquid pan, 20 ... Coating gun washing | cleaning apparatus, 21 ... Cylindrical container, 22 ... Inner peripheral surface, 24 ... Cleaning nozzle, 25 ... Rotary atomization head, 26 ... Spattering prevention member, 27 ... Cleaning nozzle axis, 37... Rotating atomizing head rotation axis, 41... Central paint discharge hole, 42. Outer paint discharge hole, 48.

Claims (5)

塗装ガンの先端に回転可能に設けられた回転軸の近傍に塗料を吐出する中心部塗料吐出孔が設けられると共に前記回転軸に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔を有する回転霧化頭を洗浄対象とする塗装ガンの洗浄方法であって、
洗浄液を噴射する洗浄ノズルの軸が前記外側塗料吐出孔の中心軸に重なるようにして、前記外側塗料吐出孔に洗浄ノズルを対向配置する工程と、
前記洗浄ノズルから前記外側塗料吐出孔に洗浄液を吹き込み、前記中心部塗料吐出孔又は前記外側塗料吐出孔から排出することで前記回転霧化頭の裏側を洗浄する工程と、
からなることを特徴とする塗装ガンの洗浄方法。 An outer coating material that is provided with a central coating material discharge hole for discharging the coating material in the vicinity of a rotary shaft that is rotatably provided at the tip of the coating gun and that discharges the coating material at an inclination so as to form a conical shape with respect to the rotary shaft. A method for cleaning a coating gun for cleaning a rotary atomizing head having a discharge hole,
A step of disposing the cleaning nozzle so as to face the outer paint discharge hole such that the axis of the cleaning nozzle for injecting the cleaning liquid overlaps the central axis of the outer paint discharge hole;
Cleaning the back side of the rotary atomizing head by blowing a cleaning liquid from the cleaning nozzle into the outer paint discharge hole and discharging it from the central paint discharge hole or the outer paint discharge hole;
A method for cleaning a paint gun, comprising: 塗装ガンの先端に回転可能に設けられた回転軸の近傍に塗料を吐出する中心部塗料吐出孔が設けられると共に前記回転軸に対して円錐形を呈するように傾斜させて塗料を吐出する外側塗料吐出孔を有する回転霧化頭を洗浄対象とする塗装ガンの洗浄装置であって、
前記塗装ガンを上から下向きに差し込むことができる筒形容器と、
この筒形容器の内周面に、前記外側塗料吐出孔の中心軸に重なるようにして取付けられ前記外側塗料吐出孔へ洗浄液を噴射する洗浄ノズルと、からなることを特徴とする塗装ガンの洗浄装置。 An outer coating material that is provided with a central coating material discharge hole for discharging the coating material in the vicinity of a rotary shaft that is rotatably provided at the tip of the coating gun and that discharges the coating material at an inclination so as to form a conical shape with respect to the rotary shaft. A cleaning device for a coating gun for cleaning a rotary atomizing head having a discharge hole,
A cylindrical container into which the paint gun can be inserted downward from above,
A coating gun cleaning comprising: a cleaning nozzle attached to an inner peripheral surface of the cylindrical container so as to overlap a central axis of the outer coating material discharge hole and spraying a cleaning liquid to the outer coating material discharge hole. apparatus. 前記洗浄ノズルから噴射する洗浄液が前記塗装ガンに当たらないときにこの洗浄液を前記筒形容器内へ落下させる飛散防止部材が、前記洗浄ノズルの軸上に置かれるようにして前記筒形容器に付設されていることを特徴とする請求項２記載の塗装ガンの洗浄装置。   A splash preventing member for dropping the cleaning liquid into the cylindrical container when the cleaning liquid sprayed from the cleaning nozzle does not hit the coating gun is attached to the cylindrical container so as to be placed on the shaft of the cleaning nozzle. 3. The coating gun cleaning apparatus according to claim 2, wherein the cleaning apparatus is a coating gun. 前記洗浄ノズルの先端形状は、真円であることを特徴とする請求項２又は請求項３記載の洗浄装置。   The cleaning apparatus according to claim 2 or 3, wherein a tip shape of the cleaning nozzle is a perfect circle. 前記洗浄用ノズルは、前記回転霧化頭の円周に沿って複数配置されていることを特徴とする請求項２、請求項３又は請求項４記載の洗浄装置。   5. The cleaning apparatus according to claim 2, wherein a plurality of the cleaning nozzles are arranged along a circumference of the rotary atomizing head.
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CN201180009255.9A CN102762310B (en) 2010-02-12 2011-02-10 Cleaning apparatus and cleaning method for coating gun
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