Painting jig and painting method

Abstract

To provide a painting jig that can improve the visual quality of the coating film applied to a surface to be painted. [Solution] The painting jig (91) comprises an attachment (1) that is attached to a paint gun (8) having a nozzle (82) for spraying paint, and a pair of brush parts (2) that are positioned to sandwich the spray bundle (Pa) of paint sprayed from the nozzle (82) when the attachment (1) is attached to the paint gun (8).

Description

Technical Field

[0001] The present invention relates to a coating jig and a coating method.

Background Art

[0002] Patent Document 1 describes a brush for a coating gun of a coating jig, which is detachably mounted to the coating gun and can coat a surface to be coated with good workability by the brush. The brush of the coating jig described in Patent Document 1 has a predetermined wall thickness and is formed in an annular shape with an elliptical cross-sectional shape.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the coating jig described in Patent Document 1, the space between the coating material ejection port portion and the surface to be coated is covered with the brush. Therefore, an operator cannot visually confirm the ejection state and the application state of the coating material ejected from the ejection port portion during the application operation. Accordingly, it is not easy to improve the visual quality of the coating film applied and formed on the surface to be coated.

[0005] Accordingly, an object of the present invention is to provide a coating jig and a coating method capable of improving the visual quality of a coating film applied and formed on a surface to be coated.

Means for Solving the Problems

[0006] 1) A first aspect of the embodiment relating to the coating jig of the present invention is a coating jig comprising: an attachment attached to a coating gun having a nozzle that ejects coating material; and a pair of brush portions disposed at positions sandwiching an ejection bundle of the coating material ejected from the nozzle in a state where the attachment is attached to the coating gun. 2) A second embodiment of the painting jig of the present invention is a painting jig comprising: an attachment that is attached to a paint gun having a nozzle for spraying paint; a pair of brush parts positioned to sandwich the sprayed bundle of paint that is sprayed from the nozzle when the attachment is attached to the paint gun; and a bracket that holds down the base portion of the bristle bundles of each of the pair of brush parts so that they do not go inward. 3) A first embodiment of the painting method of the present invention is a painting method in which the painting jig described in 1) or 2) is attached to the painting gun, and the painting gun is moved in the direction in which the pair of brushes are arranged side by side while spraying the paint from the nozzle toward the surface to be painted. 4) A second embodiment of the painting method of the present invention is a painting method in which the painting jig described in 2) is attached to the painting gun, the painting gun is moved in the direction in which the pair of brush parts are arranged side by side while spraying the paint from the nozzle toward the surface to be painted, and in the process of moving, the pair of brush parts are pressed against the surface to be painted to form a clamping portion between the surface to be painted and the bracket in the bristles of the leading brush part. [Effects of the Invention]

[0007] According to the painting jig and painting method according to the embodiment of the present invention, the visual quality of the coating film applied to the surface to be painted can be improved. [Brief explanation of the drawing]

[0008] [Figure 1A] Figure 1A is a side view illustrating a method for attaching and detaching a painting jig 91 to a painting gun 8, which is a first embodiment of the present invention. [Figure 1B] Figure 1B is a partial side view showing the painting jig 91 attached to the painting gun 8. [Figure 2] Figure 2 is a three-view drawing of the painting jig 91, where Figure 2(a) is a top view, Figure 2(b) is a front view, and Figure 2(c) is a side view. [Figure 3A] Figure 3A is a partial cross-sectional front view illustrating the spray flux Pa when the painting jig 91 is attached to the painting gun 8. [Figure 3B] Figure 3B is a schematic bottom view at position H1 in Figure 3A. [Figure 4] Figure 4 is a partial cross-sectional front view illustrating the state of the painting jig 91 during painting work. [Figure 5] Figure 5 is a three-view drawing of a painting jig 91A, which is a second embodiment of the present invention, where Figure 5(a) is a front view, Figure 5(b) is a side view, and Figure 5(c) is a bottom view. [Figure 6] Figure 6 is a partial cross-sectional front view illustrating the state of the painting jig 91A during painting work. [Figure 7] Figure 7 is a schematic bottom view illustrating the modified hair bundle 22A and ejection bundle Pb. [Modes for carrying out the invention]

[0009] (First aspect) First, a painting jig 91 according to a first embodiment of the present invention will be described with reference to Figures 1A to 4. Figure 1A is a side view illustrating how to attach and detach the painting jig 91, which is the first embodiment of the present invention, to the paint gun 8. Figure 1B is a partial side view showing the painting jig 91 attached to the paint gun 8. Figure 2 is a three-view drawing of the painting jig 91, where Figure 2(a) is a top view, Figure 2(b) is a front view, and Figure 2(c) is a side view. Figure 3A is a partial cross-sectional front view illustrating the spray flux Pa when the painting jig 91 is attached to the paint gun 8. Figure 3B is a schematic bottom view at position H1 in Figure 3A. Figure 4 is a partial cross-sectional front view illustrating the state of the painting jig 91 during painting work. The direction indicated by the arrow in Figure 2(b) is defined as the up and down direction. This up and down direction is defined for the convenience of explanation and does not define the usage posture of the painting jig 91.

[0010] As shown in Figures 1A and 1B, the painting jig 91 is detachably attached to the paint gun 8. The paint gun 8 comprises a main body 81, a nozzle 82, an operating lever 83, and a grip 84. A hose 85 is connected to the tip of the grip 84. The other end of the hose 85 is connected to an airless paint supply device (not shown), and pressurized paint is supplied from the airless paint supply device to the main body 81 through the hose 85. When the operator grips the operating lever 83, paint is ejected in a predetermined spray pattern from the nozzle 821, which opens at the axial center of the cylindrical nozzle 82.

[0011] The painting jig 91 is detachably attached to the nozzle 82 (see arrow DR), and is mounted by covering the nozzle 82 from the tip side, as shown in Figure 1B. As shown in Figure 2, the painting jig 91 comprises an attachment 1 and a pair of brush parts 2. The attachment 1 comprises a roughly cylindrical main body 11. The main body 11 has a hole 11a opening on the first end side and a hole 11b that is concentric and smaller in diameter to the hole 11a and opens on the second end side opposite to the first end. The connection between the holes 11a and 11b is a stepped portion 11c that functions as a stopper. The nozzle 82 of the painting gun 8 can be inserted into the hole 11a concentrically with almost no play.

[0012] A slit 11s extending in the axial direction is formed at one circumferential location on the first end side of the main body 11. The main body 11 also has a flange portion 12 and an opposing flange portion 14 that extend outward and opposite to each other, sandwiching the slit 11s. The flange portion 12 has a through hole through which the shaft of the bolt 13 can be inserted, and the opposing flange portion 14 has a female thread into which the bolt 13 is screwed. As a result, the bolt 13 is passed through the through hole of the flange portion 12 and loosely screwed into the opposing flange portion 14, and the nozzle 82 is inserted into the hole 11a of the main body 11. Then, by tightening the bolt 13, the hole 11a is tightened, and the attachment 1 can be tightened and fixed to the nozzle 82.

[0013] At the second end of the main body portion 11 of the attachment 1, a pair of brackets 15 each extending outward in the diametrical direction are attached. Each of the brackets 15 is formed with a support piece 151 that is bent at a right angle away from the main body portion 11 from the extended distal end. The outer surface 151a of each support piece 151 is an inclined surface that spreads outward at an angle θa as it goes downward. The angle θa is, for example, about 6°. The brush portion 2 is fastened and fixed to the surface 151a by a fastening member 3.

[0014] In the example shown in Fig. 2(b), the fastening member 3 is a machine screw, and the machine screw jointly fastens the base portion 21 of the brush portion 2 (details will be described later) and the temporarily fixed band 31 to a female screw (not shown) provided on the support piece 151. As a result, the brush portion 2 is attached to the support piece 151 in an inclined posture where the lower portion tilts outward, making it difficult for the bristle bundle 22 (details will be described later) to intrude inward. The brush portion 2 may have the base portion 21 directly fastened and fixed to the support piece 151 by a machine screw without using the band 31. Further, the fastening member 3 is not limited to a machine screw, and may be a fastener band or other types of fastening members.

[0015] As shown in Fig. 2(a), the coating jig 91 includes a main body portion 11 for attaching to the coating gun 8, and a pair of brush portions 2 arranged side by side at positions sandwiching the main body portion 11 in one diametrical direction indicated by the one-dot chain line LN2 in top view. This one diametrical direction is also referred to as the arrangement direction of the pair of brush portions 2.

[0016] The brush portion 2 has a bristle bundle 22 which is an aggregate of bristles, and a base portion 21 serving as a base to which the bristle bundle 22 is implanted. The brush portions 2 are attached to the bracket 15 in an orientation where the distal end of the bristle bundle 22 is on the side opposite to the main body portion 11, and such that the positions P22 of the distal ends of the bristle bundles 22 of the pair of brush portions 2 are aligned.

[0017] In this example, the brush part 2 is a so-called straight-bodied brush, wherein regarding the longitudinal length La, the bristle base thickness Lb, and the bristle length Lc of the base part 21 shown in Fig. 2(a), the length La is about twice the bristle base thickness Lb, and the bristle length Lc is approximately the same as or slightly longer than the length La. As a specific example, La=30mm, Lb=15mm, and Lc=35mm are adopted.

[0018] The brush part 2, which is selected as a type suitable for the coating purpose from commercially available brushes, is attached to the bracket 15 by a fastening member 3 such as a machine screw or a fastener band. In addition, each dimension of the brush part 2 and the type (material) of the bristles can be freely determined according to the content of the coating operation. Therefore, the type of brush is not limited to the straight-bodied brush. As shown in Fig. 2(a), when the bristle bundle 22 has a longitudinal direction, the pair of brush parts 2 are attached to the bracket 15 such that the longitudinal directions of the base parts 21 are substantially parallel to each other.

[0019] As shown in Fig. 3A and Fig. 3B, the nozzle 82 is preferably selected such that the cross-sectional shape of the ejection bundle Pa of the coating material to be ejected is a solid elongated shape, a so-called fan pattern. In this case, as shown in Fig. 3B, the longitudinal direction of the ejection bundle Pa is substantially parallel to the longitudinal direction of the bristle bundle 22, and as shown in Fig. 3A, in a natural state where the axis line CL of the main body part 11 is set to the vertical direction and no external force other than gravity is applied, it is preferable that the ejection bundle Pa does not hit the bristle bundle 22. The axis line CLp of the ejection bundle Pa coincides with the axis line CL of the main body part 11.

[0020] As shown in Fig. 4, the operation of attaching the coating jig 91 to the nozzle 82 of the coating gun 8 to perform coating on the coated surface 6 is performed by, for example, the following coating method. First, the worker adjusts the posture of the coating gun 8 equipped with the coating jig 91 to a posture where the axis line CL of the main body part 11 of the attachment 1 is substantially orthogonal to the coated surface 6. Next, the worker grips the operation lever 83 to eject the coating material from the ejection port 821 of the nozzle 82 toward the coated surface 6, and moves the pair of brush parts 2 in the juxtaposed direction while pressing the bristle bundles 22 of the coating jig 91 against the coated surface 6 (see arrow DR1). Hereinafter, the movement direction indicated by this arrow DR1 is referred to as the coating direction.

[0021] When moving the painting jig 91 in the painting direction, the deformation caused by the pressure of the bristle bundle 22 should be kept as constant as possible. That is, it should be moved so that the distance between the nozzle 821 and the surface to be painted 6 is kept as constant as possible. This painting process forms a paint film PM on the surface to be painted 6.

[0022] The force applied to press the paint gun 8 against the surface to be painted 6 while the paint gun 8 is moving should be such that, for example, about one-third of the length of the bristles from the tip of the bristle bundle 22 bends and deforms.

[0023] Of the pair of brush sections 2 in the painting jig 91 during painting, the brush section 2 on the leading side in the painting direction will be conveniently referred to as the leading brush section 2F, and the trailing side will be referred to as the trailing brush section 2B. Furthermore, the bristle bundle 22 of the leading brush section 2F will be referred to as the leading bristle bundle 22F, and the bristle bundle 22 of the trailing brush section 2B will be referred to as the trailing bristle bundle 22B.

[0024] The painting jig 91 has a pair of brush sections 2 with bristle bundles 22 arranged side by side so as to sandwich the spray bundle Pa, and the brush sections 2 do not surround the spray bundle Pa. Therefore, as the worker moves the painting jig 91 in the painting direction during the painting work, they can visually check the spray bundle Pa, the state of the spray bundle Pa being sprayed onto the surface to be painted 6, and the deformation of the leading bristle bundle 22F of the leading brush section 2F with their eyes E from diagonally above, as shown by the arrow LN in Figure 4. In other words, during painting, the presence or absence of spraying of the spray bundle Pa, the spraying state, and the state of the paint film PM in the area AR between the spray bundle Pa and the trailing bristle bundle 22B of the trailing brush section 2B can be visually confirmed. Therefore, the painting jig 91 can improve the visual quality of the paint film PM applied and formed on the surface to be painted 6.

[0025] The painting jig 91 can be manufactured inexpensively because it can use a commercially available brush as the brush part 2, and it is also easy to maintain, such as replacing the brush. Furthermore, the painting jig 91 is highly versatile because the shape of the hole 11a of the attachment 1 is formed to fit the mounting part of the painting gun 8, such as the nozzle 82, so it can be attached to any painting gun in a detachable manner.

[0026] The painting jig 91 uses a pair of brush sections 2, each of which the cross-sectional shape of the bristle bundles 22 is longitudinal. The pair of brush sections 2 are arranged side by side so that, when viewed from below, the longitudinal sides of the bristle bundles 22 are roughly parallel, with the spray bundle Pa in between. In this case, by aligning the direction in which the brush sections 2 are arranged, which is perpendicular to the longitudinal direction of the bristle bundles 22, in the painting direction, a wide area of ​​paint film PM can be formed by moving the painting gun 8 just once in the painting direction.

[0027] Furthermore, by selecting and using a nozzle (tip) for the paint gun 82 in which the pattern of the ejected flux Pa is fan-shaped with a longitudinal side, and by making the longitudinal direction of the ejected flux Pa roughly parallel to the longitudinal direction of the cross-sectional shape of the bristle bundle 22 of the brush part 2, the paint film PM can be formed as a high-quality film with little variation in thickness.

[0028] Furthermore, by making the width (length) of the spray bundle Pa and the width (smoothing width) of the paint spread by the bristle bundle 22 close to each other, the paint film PM can be formed as a paint film PM with a more uniform thickness and a flatter surface, resulting in higher visual quality.

[0029] (Second aspect) Next, a painting jig 91A according to a second embodiment of the present invention will be described with reference to Figures 5 and 6. Figure 5 is a three-view drawing of the painting jig 91A, which is the second embodiment of the present invention, where Figure 5(a) is a front view, Figure 5(b) is a side view, and Figure 5(c) is a bottom view. Figure 6 is a front view of a partial cross-section to illustrate the state of the painting jig 91A during painting work. The direction indicated by the arrow in Figure 5(a) is defined as the up and down direction. This up and down direction is defined for the convenience of explanation and does not define the orientation in which the painting jig 91A is used. In the following description, the up and down direction will also be referred to as the height direction.

[0030] The painting jig 91A shown in Figures 5(a) to 5(c) is the painting jig 91 of the first embodiment in which the bracket 15 is replaced with a bracket 16. Since the components other than the bracket 16 are the same, the same reference numerals are used for convenience for the same components as in the painting jig 91.

[0031] The bracket 16 has a base portion 160 fixed to the main body portion 11 of the attachment 1, and a pair of rectangular flat support pieces 161 extending downward from both ends of the base portion 160. The outer surface of the support piece 161 is formed by two surfaces: an upper support surface 161a and a lower pressing surface 161b. The shape of the support piece 161 is such that it extends downward longer in the portion where the pressing surface 161b is formed, compared to the shape of the support piece 151 of the bracket 15.

[0032] The upper support surface 161a, like the surface 151a of the bracket 15, is an inclined surface that slopes outward at an angle θb as it goes downward. The angle θb is, for example, about 6°. The base 21 of the brush part 2 abuts against the support surface 161a, and the base 21 is fixed to the support piece 161 by a fastening member 3 (for example, a small screw).

[0033] The lower pressing surface 161b is a surface that extends vertically parallel to the axis CL, and the pressing surfaces 161b of each of the pair of support pieces 161 are formed parallel to each other. The pressing surface 161b is formed to contact the bristle bundle 22 of the brush part 2 and prevent the bristle bundle 22 from penetrating towards the axis CL. In general, the bristle bundle 22 is planted in a position that is recessed inward from the outer shape of the base 21, so in this case, the support piece 161 is formed so that its pressing surface 161b protrudes outward from the lower end of the support surface 161a and contacts the root of the bristle bundle 22.

[0034] Thus, the bracket 16 has a pair of support pieces 161, and the pressing surfaces 161b of each support piece 161 are fixed to the main body 11 such that they are parallel to each other and also parallel to the axis CL of the main body 11 of the attachment 1. The pressing surfaces 161b may be formed to slightly interfere with the root side of the bristle bundle 22, which is the base side 21, in the direction of the thickness of the bristle bundle. That is, the bristle bundle 22 is pressed outward by the pressing surfaces 161b so that its inner portion does not spread out towards the axis CL.

[0035] In the example shown in Figure 5(b), the width L5 of the support piece 161 is set to be slightly shorter than the longitudinal length L22 of the hair bundle 22. This width L5 may be about the same as the length L22, or it may be longer than the length L22 and extend outward from the hair bundle 22 in the longitudinal direction.

[0036] As shown in Figure 5(a), in the height direction, the position P5 of the tip of the pressing surface 161b along the length of the bristles is set to be, for example, more than half the length Lc of the bristles of the bristle bundle 22 from the tip position P22. For example, if the length Lc is 35 mm, the distance Lp5 from the tip position P22 of the bristle bundle 22 to position P5 is, for example, approximately 30 mm to 20 mm.

[0037] The dimensions of the spray bundle Pa are set so that, when the painting jig 91A is in its natural state, it does not come into contact with the bristles 22 or the support piece 161. As shown in Figure 5(a), the height position of the stepped portion 11c on the main body 11 of the attachment 1 is the height position P82 of the nozzle 82's outlet 821, and the height distance from position P82 to position P22 of the tip of the bristles 22 is indicated by distance L8. Here, we assume that the nozzle 82 is, for example, a spray tip (part number 215) manufactured by Graco, Inc., and that the longitudinal direction of its fan-shaped spray bundle Pa is approximately parallel to the longitudinal direction of the bristles 22, as shown in Figure 5(c). In this case, if the distance L8 is set to, for example, 55 mm, the spray bundle Pa can be prevented from coming into contact with the support piece 161 and the bristles 22 in the natural state shown in Figure 5(a).

[0038] Figure 6 shows one aspect of a painting method using a painting jig 91A equipped with a support piece 161. As shown in Figure 6, when attaching the painting jig 91A to the nozzle 82 of the paint gun 8 and painting the surface to be painted 6, the operator positions the paint gun 8 so that the axis CL of the main body 11 of the attachment 1 is approximately perpendicular to the surface to be painted 6. Then, by gripping the operating lever 83, paint is sprayed from the nozzle 821 of the nozzle 82 toward the surface to be painted 6, and the bristles 22 of the painting jig 91A are pressed against the surface to be painted 6 while moving in the direction in which the pair of brush parts 2 are arranged side by side (see arrow DR2). Here, the direction of movement indicated by arrow DR2 is also referred to as the painting direction. A paint film PM is formed on the surface to be painted 6 by this painting operation.

[0039] When moving the paint gun 8 in the painting direction, pressing it against the surface to be painted 6 with a certain amount of force causes the leading bristle bundle 22F of the leading brush section 2F to deform and bend backward, forming a clamping section 221 between the surface to be painted 6 and the support piece 161 of the bracket 16. Since the clamping section 221 is filled with the bristles of the leading bristle bundle 22F between the surface to be painted 6 and the support piece 161, when the clamping section 221 is formed, a large resistance force (reaction force) is generated when the paint gun 8 is pressed against the surface to be painted 6, which the operator can perceive by touch. Therefore, by moving the paint gun 8 in the painting direction while feeling the resistance force generated by the formation of the clamping section 221, the operator can keep the distance LP between the surface to be painted 6 and the nozzle outlet 821 of the nozzle 82 almost constant. As a result, the amount of paint supplied per unit area to the surface to be painted 6 becomes almost constant, and the paint film PM is formed as a good film of uniform thickness.

[0040] In the first embodiment of the painting jig 91, which has a bracket 15 without a part that holds down the bristle bundle 22, the distance between the nozzle 821 of the paint gun 8 and the surface to be painted 6 changes depending on how the bristles of the bristle bundle 22 bend during painting. In contrast, the painting jig 91A of the second embodiment is equipped with a support piece 161 having a pressing surface 161b that holds down the bristle bundle 22, and a clamping portion 221 is formed by pressing the paint gun 8 during the painting work, making it easy to apply paint to the surface to be painted 6 so that the thickness of the paint film PM formed is constant.

[0041] In the painting jig 91A, the bristle bundles 22 of a pair of brush sections 2 are arranged side by side so as to sandwich the spray bundle Pa, and the brush sections 2 do not surround the spray bundle Pa. Therefore, as the worker moves the painting jig 91A in the painting direction during the painting work, they can visually check the spray bundle Pa, the spraying state of the spray bundle Pa onto the surface to be painted 6, and the clamping portion 221 formed on the leading bristle bundle 22F with their eyes E from diagonally above, as shown by the arrow LNa in Figure 6. In other words, during painting, the worker can visually check whether the spray bundle Pa is being sprayed, the spraying situation, the formation state of the clamping portion 221, and the state of the paint film PM in the region ARb between the spray bundle Pa and the trailing bristle bundle 22B. This makes it possible to further improve the visual quality of the paint film PM applied and formed on the surface to be painted 6.

[0042] As described above, the painting jigs 91 and 91A allow for visual confirmation of the painting status of the surface to be painted 6 by the spray bundle Pa and spray bundle Pa during the painting process. Furthermore, with painting jig 91A, the formation of the clamping portion 221 and its contact with the surface to be painted 6 can also be visually confirmed. Therefore, good painting is possible not only when the surface to be painted 6 is flat, but also when it is a fillet weld, a free edge, or a surface that makes up an opening of various shapes.

[0043] Painting jigs 91 and 91A can accommodate commercially available brushes in the brush section 2, allowing for the selection of the most suitable brush type depending on the condition of the surface to be painted 6. Furthermore, since each of the pair of brush sections 2 can be replaced independently, it is easy to determine the painting direction corresponding to the pair of brush sections 2 and use different types of brushes for the leading brush section 2F and the following brush section 2B. For example, a cylindrical brush suitable for high-viscosity paints and capable of holding a large amount of paint can be used for the leading brush section 2F, while a brush with bristles made of a material that leaves fewer streaks can be used for the following brush section 2B. Various options are available and easy to apply. When using a brush with a bristle bundle 22 having a longitudinal direction as the brush part 2, and a nozzle 82 in which the pattern of the ejection bundle Pa is fan-shaped with a longer direction in the first direction, the circumferential position of the main body part 11 fixed to the nozzle 82 can be adjusted so that the longitudinal direction of the bristle bundle 22 of the brush part 2 is substantially parallel to the first direction.

[0044] The embodiments of the present invention are not limited to the first and second embodiments described above, but are shown in the claims and include all modifications within the meaning and scope of equivalence to the claims. The pattern of the spray bundle Pa from the nozzle 82 is not limited to a fan shape. For example, as shown in Figure 7, a nozzle may be selected that sprays a bristle bundle 22A with a circular outer shape in bottom view and a spray bundle Pb with a circular cross-sectional shape. The paint used for painting and the pressure supplied may also be appropriately selected according to the painting operation. The attachment 1 attached to the paint gun 8 is not limited to one attached to the nozzle 82 of the paint gun 8. It may be attachable to a part of the paint gun 8 other than the nozzle 82, for example, and may include a pair of brush parts 2 arranged to sandwich the spray bundle Pa ejected from the nozzle 82. [Explanation of symbols]

[0045] 1 Attachment 11 Main body 11a,11b hole 11c Stepped section 11s slit 12. Guard section 13 volts 14 Opposing flange 15, 16 brackets 160 Base 151,161 Support piece 151a side 161a Support surface 161b Pressing surface 2 Brush section 2B Trailing brush section 2F Pre-brushing section 21 Base 22,22A hair bundle 22B Rear hair bundle 22F Leading hair bundle 221 Clamping section 3. Fastening components (small screws) 6 Surface to be painted 8. Paint gun 81 Main body 82 nozzles 821 Spout 83 Operating lever 84 Grip 85 Hose 91,91A Painting jig AR,ARb area CL,CLp axis line E-eye La, L22 Length Lb ball thickness Lc hair length Lp5,L8,LP distance Pa,Pb eruption bundle PM coating P5,P22,P82 position θa,θb angle

Claims

1. An attachment that is attached to a paint gun having a nozzle for spraying paint, With the attachment mounted on the paint gun, a pair of brush sections are positioned to sandwich the spray bundle of paint ejected from the nozzle, A painting jig equipped with [a specific feature].

2. An attachment that is attached to a paint gun having a nozzle for spraying paint, With the attachment mounted on the paint gun, a pair of brush sections are positioned to sandwich the spray bundle of paint ejected from the nozzle, A bracket that holds down the base portion of each of the bristle bundles of the pair of brush sections so that they do not curl inward, A painting jig equipped with [a specific feature].

3. The painting jig according to claim 1 or claim 2, wherein the brush portion has a bundle of bristles having a longitudinal direction, and the longitudinal directions of the bundles of bristles of each pair of brush portions are substantially parallel.

4. The painting jig according to claim 3, wherein when the spray pattern of the nozzle is a fan shape that is long in the first direction, the longitudinal direction of the hair bundle and the first direction can be set to be substantially parallel.

5. Attach the painting jig according to claim 1 or claim 2 to the painting gun, A painting method comprising spraying the paint from the nozzle toward the surface to be painted while moving the paint gun in the direction in which the pair of brush heads are arranged side by side.

6. The painting jig described in claim 2 is attached to the painting gun, A painting method in which the paint gun is moved in the direction in which the pair of brushes are arranged side by side while spraying the paint from the nozzle toward the surface to be painted, and in the process of moving, the pair of brushes are pressed against the surface to be painted to form a clamping portion between the surface to be painted and the bracket in the bristles of the leading brush, thereby painting the surface.

Images