JP6267538B2 - Spray gun - Google Patents
Spray gun Download PDFInfo
- Publication number
- JP6267538B2 JP6267538B2 JP2014032342A JP2014032342A JP6267538B2 JP 6267538 B2 JP6267538 B2 JP 6267538B2 JP 2014032342 A JP2014032342 A JP 2014032342A JP 2014032342 A JP2014032342 A JP 2014032342A JP 6267538 B2 JP6267538 B2 JP 6267538B2
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- Prior art keywords
- paint
- particle size
- nozzle
- nozzle portion
- pattern
- 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.)
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Classifications
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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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
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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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
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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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
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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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
- B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
- B05B7/1218—With means for adjusting or modifying the action of the controlling means
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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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
Landscapes
- Nozzles (AREA)
Description
本発明はスプレーガンに関し、特に、模様吹き用外部混合式のスプレーガンに関する。 The present invention relates to a spray gun, and more particularly to an external mixing type spray gun for pattern spraying.
建築仕上げ用の塗材を吹き付けるスプレーは、たとえば、下地吹き（ベース吹き）を行ったタイル材等に凹凸模様等の吹付（玉吹き）を行うようになっている（下記特許文献１参照）。 The spray for spraying a coating material for architectural finishing is, for example, spraying (drum blowing) such as a concavo-convex pattern on a tile material or the like that has been subjected to base spray (base spray) (see Patent Document 1 below).
そして、このような機能を有するスプレーガンとして、たとえば特許文献２に開示されるように、塗料が噴出されるノズル（塗料噴出ノズル）の周囲に塗料噴出方向と略平行に圧縮空気を噴出する模様吹きノズルを備えたものが知られている。模様吹きノズルからの圧縮空気は、塗料噴出ノズルからの塗料を引きちぎり比較的大きな粒子を形成することによって模様状（たとえば玉模様状）とするようになっている。 As a spray gun having such a function, for example, as disclosed in Patent Document 2, a pattern in which compressed air is jetted around a nozzle (paint jet nozzle) from which paint is jetted is substantially parallel to the paint jet direction. One having a blow nozzle is known. The compressed air from the pattern blowing nozzle is formed into a pattern (for example, a ball pattern) by tearing off the paint from the paint ejection nozzle to form relatively large particles.
しかし、特許文献２に示すスプレーガンは、塗料の吐出方向が不規則になり、塗布材の模様の均一性が図れないという不都合を有していた。また、特許文献１および特許文献２に示すスプレーガンはベース吹き工程と模様吹き工程ではノズルとキャップの種類が異なり、工程ごとに別のノズルとキャップにいちいち交換するという煩わしさがあった。 However, the spray gun shown in Patent Document 2 has the disadvantage that the paint discharge direction becomes irregular and the uniformity of the pattern of the coating material cannot be achieved. In addition, the spray guns shown in Patent Document 1 and Patent Document 2 have different troubles in that the types of nozzles and caps are different in the base blowing process and the pattern blowing process, and that different nozzles and caps are exchanged for each process.
本発明は、このような事情に鑑みてなされたものであり、その目的は、塗布材の模様の均一性が図れるスプレーガンを提供することにある。また、ベース吹き工程と模様吹き工程で同一のノズルとキャップを使用するスプレーガンを提供することにある。 This invention is made | formed in view of such a situation, The objective is to provide the spray gun which can aim at the uniformity of the pattern of an application | coating material. Another object of the present invention is to provide a spray gun that uses the same nozzle and cap in the base blowing process and the pattern blowing process.
本発明は、以下の構成によって把握される。
（１）本発明のスプレーガンは、模様吹き用外部混合式のスプレーガンであって、塗料噴出ノズル部を有するガン本体と、前記塗料噴出ノズル部より前記ガン本体側に設けられ、塗料噴出方向と略平行にエアを噴出する複数の模様吹きノズルが、前記塗料噴出ノズル部の正面視で、周方向に略均等間隔かつ前記塗料噴出ノズル部から略等しい距離となる位置に配置された模様吹きノズル部と、前記塗料噴出ノズル部の外周を覆うように装着され、前記塗料噴出ノズル部の外径以上の開口を有する中央開口端と前記中央開口端に連なり前記塗料噴出方向に内径が広がるように傾斜した内壁面を有するキャップであって、塗料の粒度調整用エアを噴出する複数の粒度調整ノズルが、前記正面視で、周方向に略均等間隔かつ前記塗料噴出ノズル部からの距離が略等しい前記内壁面の位置に形成されている粒度調整ノズル部を有する前記キャップと、を備え、前記粒度調整ノズルが、噴出する塗料に対して斜めに前記粒度調整用エアを吹き付けるために、前記塗料噴出ノズル部の前記塗料噴出方向の軸線に対して前記粒度調整ノズルの軸線が所定の傾斜角度を有するように形成され、前記キャップが、前記中央開口端と前記模様吹きノズル部の外周部との間に隙間が形成されるように前記ガン本体に装着されることで、前記模様吹きノズル部側にエアを供給するスリット部が形成されていることを特徴とする。
（２）本発明のスプレーガンは、（１）の構成において、前記所定の傾斜角度が、前記塗料噴出方向の軸線に収束する角度、好ましくは１１０度以上１４０度以下、であることを特徴とする。
（３）本発明のスプレーガンは、（１）又は（２）の構成において、前記粒度調整ノズルが、前記正面視で、前記塗料噴出ノズル部の中心から前記模様吹きノズルの対向する外周に接するように引いた２つの直線で記載される範囲外に配置されていることを特徴とする。
（４）本発明のスプレーガンは、（１）ないし（３）のいずれかの構成において、前記粒度調整ノズル部が前記各粒度調整ノズルの開口面積を総和した総開口面積Ａを有し、前記スリット部が総開口面積Ｂを有し、前記模様吹きノズル部が前記各模様吹きノズルの開口面積を総和した総開口面積Ｃを有し、これら総開口面積の関係が総開口面積Ａ＜総開口面積Ｂ＜総開口面積Ｃであることを特徴とする。
（５）本発明のスプレーガンは、（１）ないし（４）のいずれかの構成において、前記ガン本体が、粒度調整ノズル部に供給するエアの供給量を調節する粒度調節部を有することを特徴とする。
The present invention is grasped by the following composition.
(1) The spray gun of the present invention is an external mixing type spray gun for spraying a pattern, and is provided with a gun body having a paint jet nozzle part, the gun main body side from the paint jet nozzle part, and a paint jet direction A plurality of pattern blowing nozzles that eject air substantially parallel to the pattern blowing nozzles are arranged at substantially equal intervals in the circumferential direction and at substantially equal distances from the paint ejection nozzle portion in a front view of the paint ejection nozzle portion. A nozzle part and a paint spray nozzle part are installed so as to cover the outer periphery, and a central opening end having an opening larger than the outer diameter of the paint spray nozzle part and the central opening end are connected so that the inner diameter expands in the paint jetting direction. A plurality of particle size adjusting nozzles for ejecting air for adjusting the particle size of the paint, which are substantially equally spaced in the circumferential direction in the front view. The cap having a particle size adjusting nozzle portion formed at the position of the inner wall surface, the distance of which is substantially equal, and the particle size adjusting nozzle sprays the particle size adjusting air obliquely to the sprayed paint The axis of the particle size adjusting nozzle has a predetermined inclination angle with respect to the axis of the paint jetting direction of the paint jet nozzle part, and the cap is formed between the center opening end and the pattern spray nozzle part. A slit part for supplying air to the pattern blowing nozzle part side is formed by being mounted on the gun body so that a gap is formed between the outer peripheral part and the outer peripheral part.
(2) The spray gun of the present invention is characterized in that, in the configuration of (1), the predetermined inclination angle is an angle that converges on an axis of the paint jetting direction, preferably 110 degrees or more and 140 degrees or less. To do.
(3) In the spray gun of the present invention, in the configuration of (1) or (2), the particle size adjusting nozzle is in contact with the outer periphery of the pattern spray nozzle facing from the center of the paint spray nozzle portion in the front view. It is arranged outside the range described by the two straight lines drawn in this way.
(4) The spray gun of the present invention has a total opening area A in which the particle size adjusting nozzle portion sums the opening areas of the respective particle size adjusting nozzles in the configuration of any one of (1) to (3), The slit portion has a total opening area B, the pattern blowing nozzle portion has a total opening area C obtained by summing the opening areas of the respective pattern blowing nozzles, and the relationship between these total opening areas is the total opening area A <total opening Area B <total opening area C.
(5) The spray gun according to the present invention may have a particle size adjusting unit that adjusts the supply amount of air supplied to the particle size adjusting nozzle unit in any one of the constitutions (1) to (4). Features.
このように構成したスプレーガンは、塗布材の模様の均一性が図れるようになる。また、ベース吹き工程と模様吹き工程の両工程を同一のノズルとキャップで一貫して行えることが図れるようになる。 The spray gun configured as described above can achieve a uniform pattern of the coating material. In addition, both the base blowing process and the pattern blowing process can be performed consistently with the same nozzle and cap.
以下、添付図面を参照して、本発明を実施するための形態（以下、実施形態）について詳細に説明する。なお、実施形態の説明の全体を通して同じ要素には同じ番号を付している。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.
（実施形態１）
図１は、本発明のスプレーガンの実施形態１の概略を示す断面図である。
図１において、スプレーガン１があり、そのガン本体１０の銃身部１１の先端部Ｔには塗料が噴射される塗料噴出ノズル部２０が取り付けられている。塗料噴出ノズル部２０は、銃身部１１に形成された塗料供給口１２に連通され、この塗料供給口１２を通して塗料が塗料噴出ノズル部２０に供給されるようになっている。塗料噴出ノズル部２０には、それと同軸に配置されるニードル２１を備え、引金３０の操作によって該ニードル２１を軸方向後方へ移動させ、これにより、該ニードル２１に設けられたニードル弁２１Ａが塗料噴出ノズル部２０とのシールを解除し、塗料は塗料噴出ノズル部２０の塗料噴出口２２から塗料流として噴出できるようになっている。銃身部１１の後端部であってニードル２１の延長上には、塗料噴出量調整つまみ２３が設けられ、この塗料噴出量調節つまみ２３の回転によって塗料噴出ノズル部２０の塗料噴出口２２のシート部とニードル弁２１Ａの開度が調節され、塗料の噴出量を調節できるようになっている。
(Embodiment 1)
FIG. 1 is a cross-sectional view schematically showing Embodiment 1 of the spray gun of the present invention.
In FIG. 1, there is a spray gun 1, and a paint jet nozzle part 20 for injecting paint is attached to a tip part T of a barrel part 11 of the gun body 10. The paint jet nozzle unit 20 communicates with a paint supply port 12 formed in the barrel unit 11, and the paint is supplied to the paint jet nozzle unit 20 through the paint supply port 12. The paint spray nozzle portion 20 includes a needle 21 disposed coaxially therewith, and the needle 21 is moved rearward in the axial direction by operation of the trigger 30, whereby a needle valve 21 A provided on the needle 21 is provided. The seal with the paint ejection nozzle portion 20 is released, and the paint can be ejected as a paint flow from the paint ejection port 22 of the paint ejection nozzle portion 20. A paint spray amount adjustment knob 23 is provided at the rear end of the barrel portion 11 and on the extension of the needle 21, and a sheet of the paint jet nozzle 22 of the paint spray nozzle portion 20 is rotated by the rotation of the paint spray amount adjustment knob 23. And the opening degree of the needle valve 21 </ b> A are adjusted so that the spray amount of the paint can be adjusted.
一方、スプレーガン１の握り部１４からは圧縮空気（この明細書においてエアと称する場合がある）が空気ニップル４１、空気通路４２を介して空気弁部４３に送り込まれ、さらに、空気通路４４へ導かれるようになっている。空気弁部４３は、引金３０の上述した操作によって空気弁棒４５を軸方向後方に移動させることによって開弁させるようになっている。 On the other hand, compressed air (sometimes referred to as air in this specification) is sent from the grip portion 14 of the spray gun 1 to the air valve portion 43 via the air nipple 41 and the air passage 42, and further to the air passage 44. It has come to be guided. The air valve 43 is opened by moving the air valve rod 45 rearward in the axial direction by the above-described operation of the trigger 30.
空気弁部４３から空気通路４４へ導かれる圧縮空気は、塗料噴出ノズル部２０の周囲に形成された複数（図では６個だが６個に限定されない）の模様吹きノズル５０（図２参照）に導かれるようになっている。模様吹きノズル５０は、塗料噴出ノズル部２０と略平行になるように配置され、これにより、模様吹きノズル５０からの圧縮空気は塗料噴出ノズル部２０の塗料噴出方向とほぼ平行に噴出されるようになっている。また、模様吹きノズル５０は塗料噴出ノズル部２０よりガン本体１０側に設けられ、これにより、塗料噴出ノズル部２０の先端は模様吹きノズル５０の先端より前方に突き出すようにして配置されている。模様吹きノズル５０は、スプレーガン１の先端部Ｔを正面視した図２に示すように、塗料噴出ノズル部２０を中心とする周方向に略均等間隔に、かつ、塗料噴出ノズル部２０から略等しい距離となる位置に配置されるようになっている。模様吹きノズル５０の径はたとえばφ２ｍｍ以上φ２．５ｍｍ以下となっている。このような各模様吹きノズル５０からの圧縮空気は、塗料噴出ノズル部２０からの塗料を引きちぎり比較的大きな粒子を形成することによって模様状とするように機能するようになっている。なお、この明細書では、複数の模様吹きノズル５０を纏めて模様吹きノズル部と称する場合がある。 The compressed air guided from the air valve portion 43 to the air passage 44 is supplied to a plurality of (six in the figure, but not limited to six) pattern blowing nozzles 50 (see FIG. 2) formed around the paint jet nozzle portion 20. It has come to be guided. The pattern blowing nozzle 50 is disposed so as to be substantially parallel to the paint spray nozzle portion 20, so that the compressed air from the pattern spray nozzle 50 is jetted substantially parallel to the paint jet direction of the paint jet nozzle portion 20. It has become. Further, the pattern spray nozzle 50 is provided on the gun body 10 side from the paint spray nozzle portion 20, and thereby the tip of the paint spray nozzle portion 20 is disposed so as to protrude forward from the tip of the pattern spray nozzle 50. As shown in FIG. 2, when the front end portion T of the spray gun 1 is viewed from the front, the pattern blowing nozzles 50 are substantially evenly spaced in the circumferential direction around the paint ejection nozzle portion 20 and substantially from the paint ejection nozzle portion 20. They are arranged at the same distance. The diameter of the pattern blowing nozzle 50 is, for example, not less than φ2 mm and not more than φ2.5 mm. The compressed air from each of the pattern blowing nozzles 50 functions so as to form a pattern by tearing the paint from the paint jet nozzle unit 20 and forming relatively large particles. In this specification, the plurality of pattern blowing nozzles 50 may be collectively referred to as a pattern blowing nozzle unit.
また、銃身部１１の先端部Ｔを拡大した断面図である図３に示すように、塗料噴出ノズル部２０の外周を覆うようにキャップ５２が配置されている。このキャップ５２はキャップカバー５３を介して銃身部１１に装着されている。このキャップ５２は、その斜視図である図４に示すように、塗料噴出ノズル部２０の外径以上の開口を有する中央開口端５２Ｈと、該中央開口端５２Ｈに連なり塗料噴出方向に内径が広がるように傾斜した内壁面５２Ｗと、を有している。キャップ５２の内壁面５２Ｗには、複数（図では６個だが６個に限定されない）の粒度調整ノズル５５が形成され、これら粒度調整ノズル５５は、塗料噴出ノズル部２０を中心とする周方向に略均等間隔に、かつ、塗料噴出ノズル部２０からの距離が略等しい距離となる位置に配置されている。この場合、粒度調整ノズル５５は、たとえば、図５に示すように、塗料噴出ノズル部２０の中心から模様吹きノズル５０の対向する外周に接するように引いた２つの直線（図中点線で示す）で記載される範囲外に配置されるようになっている。粒度調整ノズル５５と模様吹きノズル５０のこのような配置関係は、互いの効果を打ち消し合わないように配慮されたものとなっている。各粒度調整ノズル５５からの圧縮空気（粒度調整用エア）は、塗料噴出ノズル部２０からの塗料に直接に衝突させるようにして、少ないエアエネルギーによって塗料を微粒化できるように機能するようになっている。このため微粒化促進された塗料でベース吹き工程を行えるようになっている。 Further, as shown in FIG. 3, which is an enlarged cross-sectional view of the distal end portion T of the barrel portion 11, a cap 52 is disposed so as to cover the outer periphery of the paint ejection nozzle portion 20. The cap 52 is attached to the barrel portion 11 via a cap cover 53. As shown in FIG. 4 which is a perspective view of the cap 52, a central opening end 52H having an opening larger than the outer diameter of the paint jet nozzle portion 20 and an inner diameter extending in the paint jetting direction are connected to the central opening end 52H. The inner wall surface 52W is inclined as described above. On the inner wall surface 52W of the cap 52, a plurality of particle size adjusting nozzles 55 (six in the figure but not limited to six) are formed, and these particle size adjusting nozzles 55 are arranged in the circumferential direction centering on the paint ejection nozzle part 20. They are arranged at substantially equal intervals and at positions where the distances from the paint spray nozzle portion 20 are substantially equal. In this case, for example, as shown in FIG. 5, the particle size adjusting nozzle 55 has two straight lines (shown by dotted lines in the drawing) drawn from the center of the coating material spray nozzle portion 20 so as to contact the outer periphery facing the pattern blowing nozzle 50. It is arranged outside the range described in. Such an arrangement relationship between the particle size adjusting nozzle 55 and the pattern blowing nozzle 50 is designed so as not to cancel each other's effects. The compressed air (particle size adjusting air) from each particle size adjusting nozzle 55 functions so as to directly collide with the coating material from the coating material ejection nozzle portion 20 so that the coating material can be atomized with less air energy. ing. For this reason, the base spraying process can be performed with the paint whose atomization is promoted.
また、各粒度調整ノズル５５は、図３に示すように、空気通路４４から粒度調整弁５７を介して圧縮空気が導かれる空気通路４６に連通され、該粒度調整弁５７の開弁によって圧縮空気が噴出されるようになっている。粒度調整弁５７は、図１に示すように、それを取付けた調整弁棒５９の他端であって銃身部１１の後端部に設けられた粒度調整つまみ（この明細書において粒度調節部と称する場合がある）５８の回転によって、シート部との開度が調節され各粒度調整ノズル５５へ送られる圧縮空気の流量調節がなされるようになっている。 Further, as shown in FIG. 3, each particle size adjusting nozzle 55 communicates with an air passage 46 through which compressed air is guided from the air passage 44 via the particle size adjusting valve 57, and the compressed air is opened by opening the particle size adjusting valve 57. Will be ejected. As shown in FIG. 1, the particle size adjusting valve 57 is a particle size adjusting knob (in this specification, a particle size adjusting portion and a second end of the adjusting valve rod 59 provided at the rear end portion of the barrel portion 11). The degree of opening with the sheet portion is adjusted by adjusting the rotation of 58, and the flow rate of the compressed air sent to each particle size adjusting nozzle 55 is adjusted.
また、各粒度調整ノズル５５は、図３に示すように、その軸線Ｏ’が塗料噴出ノズル部２０の塗料噴出方向の軸線Ｏに対して傾斜角度θ（たとえば１１０度以上１４０度以下）を有するように形成されている。これにより、粒度調整ノズル５５は、噴出する塗料噴出ノズル部２０からの塗料に対して斜めに収束するようにして圧縮空気（粒度調整エア）を吹き付けるようになっている。ここで、各粒度調整ノズル５５の傾斜角度θは、それを大きくした場合に、微粒化エネルギーは大きくなるが前方への塗料搬送効果にブレーキがかかる。その不都合を回避するため、傾斜角度θを小さくした場合は、前方への塗料搬送効果は増大するが微粒化エネルギーは小さくなる。よって傾斜角度θはこれら不都合を回避するための調和点として設定されている。粒度調整ノズル５５の径はたとえばφ１．１ｍｍ以上φ１．３ｍｍ以下となっている。なお、この明細書では、複数の粒度調整ノズル５５を纏めて粒度調整ノズル部と称する場合がある。 Further, as shown in FIG. 3, each particle size adjusting nozzle 55 has an axis O ′ having an inclination angle θ (for example, 110 degrees or more and 140 degrees or less) with respect to the axis O in the paint ejection direction of the paint ejection nozzle portion 20. It is formed as follows. Thereby, the particle size adjustment nozzle 55 blows compressed air (particle size adjustment air) so as to converge obliquely with respect to the paint from the paint jet nozzle portion 20 to be ejected. Here, when the inclination angle θ of each particle size adjusting nozzle 55 is increased, the atomization energy increases, but the forward paint conveying effect is braked. In order to avoid the inconvenience, when the inclination angle θ is reduced, the forward paint conveying effect is increased, but the atomization energy is reduced. Therefore, the inclination angle θ is set as a harmony point to avoid these disadvantages. The diameter of the particle size adjusting nozzle 55 is, for example, from φ1.1 mm to φ1.3 mm. In this specification, the plurality of particle size adjustment nozzles 55 may be collectively referred to as a particle size adjustment nozzle unit.
そして、キャップ５２は、図３に示すように、その中央開口端５２Ｈと前記模様吹きノズル５０の外周部（外周端面）との間に隙間６０が形成されるようにガン本体１０に装着されるようになっている。これにより、隙間６０は、空気通路４６に連通され、空気通路４６からの圧縮空気が模様吹きノズル５０の先端に供給されるスリット部６０として機能するようになっている。スリット部６０は、模様吹きノズル５０の前方から模様吹きノズル５０の先端に向かう方向に傾斜されて形成され、その傾斜角度γは約９０°となっている。また、スリット部６０の幅はたとえば０．３ｍｍ以上０．７ｍｍ以下となっている。なお、図６は、スプレーガンの銃身部の先端の正面の写真であり、（ａ）はスリット部６０が形成されている場合を示し、（ｂ）はスリット部６０が形成されていない場合を示している。実機テストにおいて、図６（ａ）、（ｂ）に示すように、スリット部６０から供給されるスリットエアがキャップ５２などへの塗料付着を著しく減少させることが確認できた。 As shown in FIG. 3, the cap 52 is attached to the gun body 10 so that a gap 60 is formed between the central opening end 52 </ b> H and the outer peripheral portion (outer peripheral end surface) of the pattern blowing nozzle 50. It is like that. Thus, the gap 60 is communicated with the air passage 46 and functions as a slit portion 60 through which compressed air from the air passage 46 is supplied to the tip of the pattern blowing nozzle 50. The slit portion 60 is formed to be inclined in a direction from the front of the pattern blowing nozzle 50 toward the tip of the pattern blowing nozzle 50, and the inclination angle γ is about 90 °. Moreover, the width of the slit part 60 is 0.3 mm or more and 0.7 mm or less, for example. FIG. 6 is a photograph of the front of the tip of the barrel part of the spray gun, where (a) shows the case where the slit part 60 is formed, and (b) shows the case where the slit part 60 is not formed. Show. In the actual machine test, as shown in FIGS. 6A and 6B, it was confirmed that the slit air supplied from the slit portion 60 significantly reduced the adhesion of the paint to the cap 52 and the like.
なお、上述した構成において、粒度調整ノズル部における各粒度調整ノズル５５の開口面積を総和した面積をＡとし、スリット部６０における総開口面積をＢとし、模様吹きノズル部における各模様吹きノズル５０の開口面積を総和した面積をＣとした場合、Ａ＜Ｂ＜Ｃの関係を有するようになっている。この場合、Ａ、Ｂ、Ｃの比率をたとえば１：２：２．５の比率にすることが好ましいことが確認されている。 In the configuration described above, the sum of the opening areas of the particle size adjusting nozzles 55 in the particle size adjusting nozzle part is A, the total opening area in the slit part 60 is B, and the pattern blowing nozzles 50 in the pattern blowing nozzle part. When the total area of the openings is C, the relationship of A <B <C is established. In this case, it has been confirmed that the ratio of A, B, and C is preferably a ratio of 1: 2: 2.5, for example.
このように構成したスプレーガンは、塗料噴出ノズル部２０より後方に塗料噴出方向と略平行に圧縮空気を噴出する複数の模様吹きノズル５０が配置されていることから、塗料噴出ノズル部２０からの塗料の噴出の直進性を確保することができるようになる。そして、キャップ５２に形成した粒度調整ノズル５５は、塗料噴出ノズル部２０から噴出する塗料に対して斜めに圧縮空気を吹き付けるために、塗料の噴出方向の直進性を損なうことなく塗料の微粒化を促進させることができるようになる。このため、塗布材の模様の均一性が図れるようになる。また、このように構成したスプレーガンはこれら圧縮空気の流量調節ができる機能を備え塗料の微粒化程度を変えることができる。このため、ベース吹き工程と模様吹き工程の両工程を同一のノズルとキャップで一貫して行えることが図れるようになる。 The spray gun configured as described above has a plurality of pattern blowing nozzles 50 for ejecting compressed air substantially in parallel with the paint jetting direction behind the paint jet nozzle part 20, so that the spray gun from the paint jet nozzle part 20 is arranged. It becomes possible to ensure straightness of the spray of paint. The particle size adjusting nozzle 55 formed on the cap 52 sprays the compressed air obliquely against the paint ejected from the paint ejection nozzle section 20, so that the atomization of the paint is performed without impairing the straightness of the paint ejection direction. Can be promoted. For this reason, the uniformity of the pattern of the coating material can be achieved. Further, the spray gun configured as described above has a function of adjusting the flow rate of these compressed air and can change the degree of atomization of the paint. For this reason, it becomes possible to achieve both the base blowing process and the pattern blowing process with the same nozzle and cap.
以上、実施形態を用いて本発明を説明したが、本発明の技術的範囲は上記実施形態に記載の範囲には限定されないことは言うまでもない。上記実施形態に、多様な変更または改良を加えることが可能であることが当業者に明らかである。また、その様な変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。 As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the description of the scope of claims that embodiments with such changes or improvements can also be included in the technical scope of the present invention.
１ スプレーガン
１０ ガン本体
１１ 銃身部
１２ 塗料供給口
１４ 握り部
２０ 塗料噴出ノズル部
２１ ニードル
２１Ａ ニードル弁
２２ 塗料噴出口
２３ 塗料噴出量調整つまみ
３０ 引金
４１ 空気ニップル
４２ 空気通路
４３ 空気弁部
４４ 空気通路
４５ 空気弁棒
４６ 空気通路
５０ 模様吹きノズル
５２ キャップ
５２Ｈ 中央開口端
５２Ｗ 内壁面
５３ キャップカバー
５５ 粒度調整ノズル
５７ 粒度調整弁
５８ 粒度調節つまみ
５９ 調整弁棒
６０ 隙間（スリット部）
DESCRIPTION OF SYMBOLS 1 Spray gun 10 Gun main body 11 Gun barrel part 12 Paint supply port 14 Grip part 20 Paint jet nozzle part 21 Needle 21A Needle valve 22 Paint jet outlet 23 Paint jet amount adjustment knob 30 Trigger 41 Air nipple 42 Air passage 43 Air valve part 44 Air passage 45 Air valve rod 46 Air passage 50 Pattern blowing nozzle 52 Cap 52H Central opening end 52W Inner wall surface 53 Cap cover 55 Particle size adjustment nozzle 57 Particle size adjustment valve 58 Particle size adjustment knob 59 Adjustment valve rod 60 Clearance (slit portion)
Claims (5)
塗料噴出ノズル部を有するガン本体と、
前記塗料噴出ノズル部より前記ガン本体側に設けられ、塗料噴出方向と略平行にエアを噴出する複数の模様吹きノズルが、前記塗料噴出ノズル部の正面視で、周方向に略均等間隔かつ前記塗料噴出ノズル部から略等しい距離となる位置に配置された模様吹きノズル部と、
前記塗料噴出ノズル部の外周を覆うように装着され、前記塗料噴出ノズル部の外径以上の開口を有する中央開口端と前記中央開口端に連なり前記塗料噴出方向に内径が広がるように傾斜した内壁面を有するキャップであって、塗料の粒度調整用エアを噴出する複数の粒度調整ノズルが、前記正面視で、周方向に略均等間隔かつ前記塗料噴出ノズル部からの距離が略等しい前記内壁面の位置に形成されている粒度調整ノズル部を有する前記キャップと、を備え、
前記粒度調整ノズルが、噴出する塗料に対して斜めに前記粒度調整用エアを吹き付けるために、前記塗料噴出ノズル部の前記塗料噴出方向の軸線に対して前記粒度調整ノズルの軸線が所定の傾斜角度を有するように形成され、
前記キャップが、前記中央開口端と前記模様吹きノズル部の外周部との間に隙間が形成されるように前記ガン本体に装着されることで、前記模様吹きノズル部側にエアを供給するスリット部が形成されていることを特徴とするスプレーガン。 An external mixing spray gun for pattern blowing,
A gun body having a paint ejection nozzle,
A plurality of pattern blowing nozzles, which are provided on the gun body side from the paint jet nozzle part and jet air in substantially parallel to the paint jet direction, are substantially equally spaced in the circumferential direction in the front view of the paint jet nozzle part, and A pattern blowing nozzle portion disposed at a position that is substantially the same distance from the paint ejection nozzle portion;
A central opening end that is mounted so as to cover the outer periphery of the paint jet nozzle portion and has an opening that is equal to or larger than the outer diameter of the paint jet nozzle portion, and an inner surface that is inclined so that the inner diameter spreads in the paint jet direction. A cap having a wall surface, wherein the plurality of particle size adjusting nozzles for ejecting air for adjusting the particle size of the paint are substantially equally spaced in the circumferential direction and substantially the same distance from the paint jet nozzle portion in the front view. The cap having a particle size adjustment nozzle portion formed at the position of
In order for the particle size adjusting nozzle to blow the particle size adjusting air obliquely with respect to the sprayed paint, the axis of the particle size adjusting nozzle has a predetermined inclination angle with respect to the axis of the paint spraying direction of the paint spray nozzle portion. Formed to have
The cap is attached to the gun body so that a gap is formed between the center opening end and the outer peripheral portion of the pattern blowing nozzle portion, and a slit for supplying air to the pattern blowing nozzle portion side A spray gun characterized in that a part is formed.
前記スリット部が総開口面積Ｂを有し、
前記模様吹きノズル部が前記各模様吹きノズルの開口面積を総和した総開口面積Ｃを有し、
これら総開口面積の関係が総開口面積Ａ＜総開口面積Ｂ＜総開口面積Ｃであることを特徴とする請求項１ないし請求項３のいずれか１項に記載のスプレーガン。 The particle size adjustment nozzle portion has a total opening area A that is the sum of the opening areas of the particle size adjustment nozzles,
The slit portion has a total opening area B;
The pattern blowing nozzle portion has a total opening area C obtained by summing the opening areas of the pattern blowing nozzles,
The spray gun according to any one of claims 1 to 3, wherein the relationship between the total opening areas is: total opening area A <total opening area B <total opening area C.
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| JP2014032342A JP6267538B2 (en) | 2014-02-21 | 2014-02-21 | Spray gun |
| CN201580009381.2A CN106029238A (en) | 2014-02-21 | 2015-02-05 | Spray gun |
| PCT/JP2015/053213 WO2015125619A1 (en) | 2014-02-21 | 2015-02-05 | Spray gun |
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| JP2014032342A JP6267538B2 (en) | 2014-02-21 | 2014-02-21 | Spray gun |
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| DE102018118738A1 (en) | 2018-08-01 | 2020-02-06 | Sata Gmbh & Co. Kg | Base body for a spray gun, spray guns, spray gun set, method for producing a base body for a spray gun and method for converting a spray gun |
| DE102018118737A1 (en) | 2018-08-01 | 2020-02-06 | Sata Gmbh & Co. Kg | Nozzle for a spray gun, nozzle set for a spray gun, spray guns and method for producing a nozzle for a spray gun |
| EP3829778A2 (en) | 2018-08-01 | 2021-06-09 | SATA GmbH & Co. KG | Set of nozzles for a spray gun, spray gun system, method for embodying a nozzle module, method for seelcting a nozzle module from a set of nozzles for a paint job, selection system and computer program product |
| CN108952102A (en) * | 2018-08-16 | 2018-12-07 | 榕江县榕树林建筑漆业有限公司 | The spray gun special of nozzle adjustable range in a kind of building coating |
| CN111734093B (en) * | 2020-06-30 | 2021-08-03 | 四川航天建筑工程有限公司 | Basement exterior wall non-cured asphalt waterproof coating construction device and method |
| CN112459429A (en) * | 2020-11-20 | 2021-03-09 | 丁光裕 | Semi-automatic wall whitewashing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6377649A (en) * | 1986-09-22 | 1988-04-07 | Adamando Kogyo Kk | Pc end face polishing method for optical fiber connector and its device |
| JPS63172565U (en) * | 1987-04-30 | 1988-11-09 | ||
| JPH0737728Y2 (en) * | 1989-08-11 | 1995-08-30 | 岩田塗装機工業株式会社 | Spray gun with internal mixing and atomization |
| JP3371031B2 (en) * | 1994-04-14 | 2003-01-27 | アネスト岩田株式会社 | Spray gun and painting equipment |
| JPH09290184A (en) * | 1996-04-26 | 1997-11-11 | Sekisui House Ltd | Spatter coating nozzle |
| JP2001239191A (en) * | 2000-03-01 | 2001-09-04 | Pentel Corp | Spray gun |
| JP4803623B2 (en) * | 2001-07-04 | 2011-10-26 | 旭サナック株式会社 | Air play hand gun |
| JP2006263594A (en) * | 2005-03-24 | 2006-10-05 | Anest Iwata Corp | Atomizing air cap for air spray gun |
| JP5010111B2 (en) * | 2005-05-25 | 2012-08-29 | アネスト岩田株式会社 | Spray gun for powder coating |
| CN101184555B (en) * | 2005-05-25 | 2011-12-28 | 阿耐斯特岩田株式会社 | Spray gun for powder electrostatic coating |
| JP4200181B2 (en) * | 2007-01-30 | 2008-12-24 | 俊二 野嶋 | Spray gun |
| GB0903275D0 (en) * | 2009-02-26 | 2009-04-08 | Earlex Ltd | Spray gun |
| US20100308134A1 (en) * | 2009-06-03 | 2010-12-09 | Michael Bunnell | Automatic Paint Spray Gun For Two-Component Systems |
-
2014
- 2014-02-21 JP JP2014032342A patent/JP6267538B2/en not_active Expired - Fee Related
-
2015
- 2015-02-05 WO PCT/JP2015/053213 patent/WO2015125619A1/en active Application Filing
- 2015-02-05 CN CN201580009381.2A patent/CN106029238A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015157244A (en) | 2015-09-03 |
| CN106029238A (en) | 2016-10-12 |
| WO2015125619A1 (en) | 2015-08-27 |
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