JP2001113211A - Coating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating apparatus with which cost and time can be lessened, a production line can be shortened, and a coating with complicated patterns and colors is formed on an object to be coated. SOLUTION: This coating apparatus 1 is provided with a plurality of first to fifth coating guns 46-50 arranged linearly in rows in the width direction at right angles to the transportation direction of an object 2 to be coated and capable of jetting first to fifth coating materials 6-10 to the object 2 to be coated, respectively. A plurality of these rows of the coating guns are arranged in the transportation direction at proper intervals as to enable application of a next coating material before the coating material applied precedently is dried. Further, the first to fifth coating guns 46-50 arranged in rows are so positioned as to overlap the coating ranges of the respective first to fifth coating materials 6-10 sprayed out mutually neighboring coating guns in the object to be coated 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for applying a paint to an object to be coated, and more particularly, to a coating apparatus for spraying a paint onto the object by a coating gun while conveying the object.

[0002]

2. Description of the Related Art Conventionally, there has been known a coating apparatus for applying a coating material to an object to be coated such as a plywood, a fiberboard, a particle board and a building material. Specifically, while the input object is being conveyed by a conveyor such as a roller or a belt, paint is sprayed from above the object by one or more coating guns to form a coating film on the surface of the object. There is something that forms. The formed coating film is then dried by heat, ultraviolet light or the like.

[0003]

However, in order to form a multicolored pattern or a complicated pattern on an object to be coated using such a coating apparatus, coating and drying are repeated to form a coating film in order. And the cost and time required for production, and the length of the production line in the factory becomes longer. Further, since the next coating film is formed after the coating film is dried, there is a limit to the pattern that can be formed.

[0004] The present invention has been made in view of the above circumstances, and can reduce the cost and time, can shorten the production line, and can apply a complicated pattern and color to the object to be coated. It is intended to provide a coating device.

[0005]

Means for Solving the Problems, Actions and Effects The means for solving the problem is that the coating material is arranged linearly or staggered in the width direction perpendicular to the conveying direction of the object to be coated, Is a coating apparatus in which a plurality of coating guns capable of spraying a plurality of coatings are arranged in a plurality of rows in the transport direction at intervals at which a next coating material can be applied before the surface of the previously applied coating material is dried.

According to the present invention, in the coating apparatus, a plurality of coating guns are arranged in a line in a line or a staggered manner in the width direction of the object to be coated, and such a plurality of lines are arranged in the conveying direction of the object to be coated. Are located. The preceding and succeeding rows are arranged at short intervals so that the next paint can be applied before the paint surface (coating film surface) previously applied is dried. In such a coating apparatus, the next paint is applied before the previously applied paint surface dries, so that the previously applied paint and the next paint are coated with the paint sprayed from the coating gun. It mixes in the air while being applied to the object or on the object after being applied to the object. For this reason, when the coating is applied with a space between the front and rear coating guns, or when the coating is further applied after forced drying by, for example, heat or the like, a complicated color, pattern, gloss ( A coating film having a matte, matte, etc.) can be applied to the object to be coated. In addition, since the coating can be applied at once at short intervals, the time and cost for coating can be reduced, and the production line can be shortened. Note that the coating gun includes not only those that are fixed at predetermined positions in the width direction orthogonal to the transport direction, but those that are swingable in the width direction.

Further, in the above-mentioned coating apparatus, at least one of the plurality of coating guns arranged in the plurality of rows is formed of the coating gun sprayed from the coating gun adjacent in the width direction. It is preferable that the coating apparatus is arranged at a position where the application ranges on the object to be coated overlap each other.

[0008] In a row of coating guns arranged at positions where the application areas of the sprayed paint on the object to be coated overlap, each paint gun has a different paint (a paint having a different color, material, characteristic, etc., for example, a red paint). When a white paint) is supplied, a portion where different paints are simultaneously applied is formed on the substrate. Therefore, in this part, since different paints are mixed with each other, colors and patterns (mixed colors and gradations of two colors, different glosses, etc., which could not be expressed by the original paint alone. For example, a pink color formed from red and white) , A gradation in which the color gradually changes from red to pink to white).
Therefore, not only can a coating film having a color, pattern, luster, etc., which could not be conventionally represented in the transport direction by the rows of front and rear guns be formed, but also in the width direction by the coating guns in adjacent rows. A coating film having a color, a pattern, a luster, or the like can be provided. In order to apply different paints to the paint guns whose application areas overlap each other, a plurality of paint tanks for storing paints, and the paints to be stored are supplied from the plurality of paint tanks to the corresponding paint guns. And a plurality of paint supply pipes.

Further, in the above coating apparatus, among the plurality of coating guns arranged in a plurality of rows, the plurality of coating guns in the front row in the transport direction each have two or more paint inlets. A plurality of multi-color simultaneous mixing guns, wherein the application areas of the paint sprayed from the multi-color simultaneous mixing guns adjacent in the width direction on the object to be coated are arranged at positions overlapping each other. It is good to use a special coating device.

According to the present invention, since the plurality of paint guns in the front row in the transport direction are multicolor simultaneous mixing guns, a plurality of paints supplied from the paint inlet are selected in the multicolor simultaneous mixing gun. The mixture can be easily adjusted by, for example, opening and closing a solenoid valve corresponding to the paint inlet of the multi-color simultaneous mixing gun at a high speed. Therefore, even if the paint supplied to the coating gun is not mixed in advance, the base material can be easily coated with the paint having a desired mixing ratio on the object to be coated, and the mixing ratio of each paint is appropriately changed ( For example, changing the mixture ratio of the yellow and blue paints to change them to yellow-green-blue paints)
Various colors and patterns can be formed on the object to be coated.

In addition, in the portion where the application ranges of the adjacent multicolor simultaneous mixing guns overlap each other on the object to be coated, the coating materials are further mixed with each other, so that a coating film having a more complicated color and pattern can be formed. it can. In addition, in order to apply different paints to the multi-color simultaneous mixing gun whose application range overlaps, a plurality of paint tanks for storing the paint, and from the plurality of paint tanks, a corresponding multi-color simultaneous mixing gun, A plurality of paint supply pipes for supplying the paint to be stored may be provided.

Another solution is to provide a plurality of coating guns which are arranged in a straight line or in a zigzag manner in a width direction orthogonal to the conveying direction of the object to be sprayed, and which can spray the paint toward the object to be coated. A plurality of paint guns arranged at positions where the application ranges of the paint sprayed from the adjacent paint guns on the object to be coated overlap each other, a plurality of paint tanks storing the paint, and the plurality of paint tanks. A coating apparatus, comprising: a plurality of paint supply pipes for respectively supplying the paint to be stored from a paint tank to at least one or more of the corresponding painting guns.

According to the present invention, in the coating apparatus, a plurality of coating guns are arranged in a straight line or in a staggered manner in the width direction of the object to be coated, and are arranged such that the application areas on the object to be coated overlap each other. I have. Since there are a plurality of paint tanks, different paints (paints having different colors, materials, characteristics, etc., for example, red and white paints) are stored in the plurality of paint tanks. Different paints (for example, red and white paints) are supplied from the supply pipe, and a portion where different paints are simultaneously applied is formed on the workpiece. Therefore, in this part, since different paints are mixed with each other, colors and patterns (mixed colors and gradations of two colors, different glosses, etc., which could not be expressed by the original paint alone. For example, a pink color formed from red and white) (A gradation in which the color gradually changes from red to pink to white). In addition, since paint can be applied all at once with a coating gun arranged in the width direction,
The time and cost for painting can be reduced, and the production line can be shortened.

The number of paint tanks is equal to the number of paint guns.
It is preferable to connect each paint tank and the corresponding paint gun with a paint supply pipe. This is because the structure of the pipe becomes easy. On the other hand, the number of paint tanks is smaller than the number of paint guns, and a plurality of paint supply pipes are connected to one paint tank, or a plurality of paint supply pipes exiting from the paint tank are branched in the middle, so that a plurality of paint supply pipes The paint may be supplied to the paint gun. This is because the number of paint tanks can be reduced. Further, a paint pump for feeding the paint toward the paint gun may be provided in the paint supply pipe as needed.

Further, in the above coating apparatus, the plurality of coating guns are a plurality of multi-color simultaneous mixing guns each having two or more predetermined number of paint inlets, and the number of the paint tanks is as described above. The predetermined number of paint inlets is the same number, the plurality of paint supply pipes, from the predetermined number of paint tanks,
Preferably, the coating apparatus is characterized in that the stored paint is supplied to the paint inlet of the corresponding multicolor simultaneous mixing gun.

According to the present invention, since the coating gun is a multi-color simultaneous mixing gun, a plurality of paints supplied from the paint supply pipe are selected or mixed in the multi-color simultaneous mixing gun and sprayed. The mixing ratio of each paint can be easily adjusted by, for example, opening and closing a solenoid valve corresponding to each paint inlet of the multicolor simultaneous mixing gun at a high speed. Therefore, it is possible to easily apply a coating material having a desired mixing ratio on an object to be coated without previously mixing the supplied coating materials. Further, by changing the mixing ratio of each paint (for example, changing the mixing ratio of yellow and blue paints to change them to yellow-green-blue paints), various patterns are formed on the object to be coated. You can also.
In addition, in the portion where the application ranges of the adjacent multicolor simultaneous guns overlap on the object to be coated, the paints are further mixed with each other, so that a more complicated color or pattern can be formed.

Further, a predetermined number (for example, four) of paint tanks are provided in the same number as the paint inlets (for example, four) of the multicolor simultaneous mixing gun, and the corresponding multicolor simultaneous mixing gun is provided from the predetermined number of paint tanks. A paint supply pipe for supplying paint to the paint inlet is provided. For this reason, for example, if paints of different colors and materials (for example, four colors of black, yellow, cyan, and magenta) are stored in four paint tanks, these four kinds of paints are similarly applied to any paint gun. Can be supplied.
Therefore, by controlling each multi-color simultaneous mixing gun, it is possible to output the same color paint in all multi-color simultaneous mixing guns, so that each multi-color simultaneous mixing gun can output a different color. Until you do, you can paint in various patterns.

Another solution is to arrange a linear or staggered line in the width direction perpendicular to the conveying direction of the object to be coated, and to spray the first paint toward the object to be coated. A plurality of first paint guns, wherein a plurality of first paint guns in which application areas of the first paint sprayed from adjacent first paint guns on the object to be coated overlap each other; A plurality of first paint tanks for storing a plurality of first paints;
From the paint tank, a corresponding at least one of said first
A plurality of first paint supply pipes for supplying the first paint to be stored in the paint gun, respectively, and a plurality of first paint supply pipes arranged behind the first paint gun in the transport direction and a straight line in a width direction orthogonal to the transport direction. A plurality of second paint guns arranged in a row in a staggered or staggered manner and capable of spraying a second paint toward the object to be coated, wherein the second paint guns sprayed from the adjacent second paint guns are provided. A second coating gun in which the application ranges of the paints on the object to be coated overlap with each other, and the second paint is arranged at an interval capable of applying the second paint before the surface of the applied first paint is dried; And a plurality of second paint tanks for supplying the second paint to be stored from the plurality of second paint tanks to the corresponding at least one or more second paint guns, respectively. And two paint supply pipes. This is the case unit.

In the coating apparatus of the present invention, a plurality of first and second
The coating guns are arranged in rows in the width direction of the workpiece,
In each row, the coating ranges on the object to be coated are arranged so as to overlap each other. Further, these rows are arranged at short intervals so that the next second paint can be applied before the first paint surface (coating film surface) previously applied is dried. Since the coating apparatus has a plurality of first paint tanks, the plurality of first different paints (color, material,
Paints with different characteristics. When, for example, red and white paints are stored, different paints (for example, red and white paints) are supplied to the adjacent first painting gun from the first paint supply pipe, and different first paints are applied to the workpiece. There is a part where the paint is simultaneously applied.

Similarly, since a plurality of second paint tanks are provided, different paints (for example, yellow and blue paints) are stored in the plurality of second paint tanks. A different paint is supplied from the second paint supply pipe, and a portion where the different second paint is simultaneously applied to the workpiece is formed. Therefore, in these simultaneously applied portions, different paints (for example, red and white, or yellow and blue paints) are mixed, and therefore, in addition to the mixing between the first paints by the first coating guns, Mixing with the second paint by the second paint guns can also be caused, and colors and patterns (2
Mixed colors or different patterns or lusters).

Further, before the surface of the first paint (the surface of the coating film) previously applied is dried, the next second paint is applied, so that the first paint and the second paint are mixed. (For example, yellow and blue are mixed with red and white.) When the first paint surface is dried after applying the first paint, the first paint is forcibly forced by heat or the like between them. A coating film having a more complicated color, pattern, luster, and the like, which cannot be formed when drying is sandwiched, can be applied to an object to be coated. Further, in this coating apparatus, the coating can be applied all at once at short intervals, so that the time and cost for coating can be reduced, and the production line can be shortened.

Further, in the above-mentioned coating apparatus, the plurality of first coating guns are a plurality of multicolor simultaneous mixing guns each having two or more predetermined number of paint inlets, and
The number of the paint tanks is the same as the predetermined number of the paint inlets, and the plurality of first paint supply pipes are the predetermined number of the first paint supply pipes.
It is preferable that the first paint to be stored is supplied from a paint tank to a corresponding paint inlet of the multicolor simultaneous mixing gun.

In the present invention, since the multi-color simultaneous mixing gun is used as the first coating gun for applying the first coating, the plurality of first coatings supplied from the first coating supply pipe can be used simultaneously. Mixing and spraying can be performed in the mixing gun, and the mixing ratio of the first paint can be easily adjusted by, for example, opening and closing the solenoid valve of the multicolor simultaneous mixing gun at high speed. Therefore, the first paint having a desired mixing ratio can be easily applied on the substrate without mixing the first paint to be supplied in advance.
Further, by changing the mixture ratio of the first paint (for example, by changing the mixture ratio of yellow and blue paints to change them to yellow-green-blue paints), various colors are applied on the object to be coated. And patterns can also be formed. In addition, since the first paints are further mixed with each other in the portion where the application ranges of the adjacent multicolor simultaneous guns overlap on the object to be coated, more complex colors and patterns can be formed.

Further, a predetermined number (for example, four) of paint tanks are provided in the same number as the paint inlets (for example, four) of the multicolor simultaneous mixing gun, and the corresponding multicolor simultaneous mixing gun is provided from the predetermined number of paint tanks. A paint supply pipe for supplying paint to the paint inlet is provided. For this reason, for example, if paints of different colors and materials (for example, four colors of black, yellow, cyan, and magenta) are stored in four paint tanks, these four kinds of paints are similarly applied to any paint gun. Can be supplied.
Therefore, by controlling each multi-color simultaneous mixing gun, it is possible to output the same color paint in all multi-color simultaneous mixing guns, so that each multi-color simultaneous mixing gun can output a different color. Until you do, you can paint in various patterns.

[0025]

(Embodiment 1) Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an explanatory view of the coating apparatus 1 of the present embodiment as viewed from the side, and FIG. 2 shows an explanatory view of the coating guns 46 to 50 and the like as viewed from above. In the present embodiment, a case is described in which a building board having a length of 3010 mm and a width of 455 mm in the traveling direction is coated as the work 2. This coating device 1
A plurality of first to fifth coating guns 46 to 50 for applying the first to fifth coating materials 6 to 10 to the workpiece 2 and a plurality of first and second coating guns 46 to 50 for storing the first to fifth coating materials 6 to 10 1st to 5th paint tank 16
And a plurality of first to fifth paint supply pipes for supplying the first to fifth paints 6 to 10 from the first to fifth paint tanks 16 to 20 to the first to fifth paint guns 46 to 50, respectively. 36 ~
40. In addition, among the coating guns, the first coating gun 4
6A to 46D have four paint inlets 46A1 and 46A.
This is a four-color simultaneous mixing gun (multicolor simultaneous mixing gun) having 2, 46A3, 46A4, and the like. In addition, the substantially circular area shown by the broken line in FIG. 2 indicates the application range on the workpiece 2 by the first to fifth coating guns 46 to 50.

The first to fifth paint tanks 16 to 20 include four first paint tanks 16A, 16B, 16C, 1
6D, two second paint tanks 17A, 17B, three third paint tanks 18A, 18B, 18C, four fourth paint tanks 19A, 19B, 19C, 19D, and four fifth paint tanks 20A, 20B, 20C, and 20D.

The first paint tanks 16A to 16D contain first paint 6A of color A (for example, black) and color B (for example, white).
First paint 6B, first paint 6 of C color (for example, rust color)
First paint 6D of C or D color (for example, cream color)
Are each stored. Also, the second paint tank 17
In both tanks A and 17B, the second paint 7 of E color is stored. In addition, the third paint tank 18A ~
18C, the third paint 8 of F color is stored in each case. Also, in the fourth paint tanks 19A to 19D,
Either the G fourth paint 9A or the H fourth paint 9B is stored. In addition, the fifth paint tank 20
In each of the tanks A to 20D, the fifth paint 10 of I color is stored.

From the first paint tanks 16A to 16D, first paint supply pipes 36A, 36B, 36C, 36 are provided.
D are respectively extended and branched into four pieces on the way, and four first paint guns 46A, 46 which are four color simultaneous mixing guns.
B, 46C, 46D each of four paint inlets 46A
1,46A2,46A3,46A4,46B1,46B
2,46B3,46B4,46C1,46C2,46C
3,46C4,46D1,46D2,46D3,46D
4 respectively.

Specifically, the first paint supply pipe 36A is connected to the paint inlets 46A1, 46A of the first paint guns 46A to 46D.
B1, 46C1, 46D1 and the first paint supply pipe 36B
Are the paint inlets 46A2, 46B2, 46C2, 46D2
The first paint supply pipe 36C is connected to the paint inlets 46A3, 4A.
6B3, 46C3, 46D3, the first paint supply pipe 36
D is the paint inlet 46A4, 46B4, 46C4, 46D
4 respectively. Thus, four types of first paints 6A to 6D are supplied to all of the first paint guns 46A to 46D.

Further, second paint supply pipes 37A and 37B extend from the second paint tanks 17A and 17B, respectively, and are connected to two second paint guns 47A and 47B, respectively. Thus, the second paint 7 is supplied to the second paint guns 47A and 47B. Similarly,
Third paint supply pipes 38A, 38B, 38C extend from the third paint tanks 18A to 18C, respectively, and are connected to three third paint guns 48A, 48B, 48C, respectively. As a result, the third paint guns 48A to 48C have
In each case, the third paint 8 is supplied.

Similarly, the fourth paint tanks 19A to 19A
From D, the fourth paint supply pipes 39A, 39B, 39C,
39D are respectively extended, and four fourth paint guns 49A,
49B, 49C, and 49D, respectively. Thus, the fourth paint 9A is supplied to the fourth paint guns 49A and 49C, and the fourth paint 9B is supplied to the fourth paint guns 49B and 49D, respectively. Similarly, the fifth
From the paint tanks 20A to 20D, the fifth paint supply pipe 4
0A, 40B, 40C, and 40D respectively extend and are connected to four fifth coating guns 50A, 50B, 50C, and 50D, respectively. Thereby, the fifth paint gun 50A ~
The 50D is supplied with the fifth paint 10 in each case.

Further, first to fifth paint supply pipes 36 to 4
0 to the first to fifth paint pumps 26 to pump the first to fifth paints 6 to 10 from the first to fifth paint tanks 16 to 20 to the first to fifth paint guns 46 to 50. 30 are installed respectively. That is, the first paint supply pipes 36A to 36A-3
6D includes first paint pumps 26A, 26B, 26C, 2
6D are provided respectively. Similarly, the second paint pumps 27A, 27A are connected to the second paint supply pipes 37A, 37B.
7B, third paint supply pipes 38A to 38C have third paint pumps 28A, 28B and 28C, and fourth paint supply pipes 39A to 39D have fourth paint pumps 29A and 29A.
29B, 29C and 29D are the fifth paint tank 20.
A to 20D include fifth paint pumps 30A, 30B, 30
C and 30D are provided respectively.

Each of the first paint guns 46A to 46D is a four-color simultaneous mixing gun (combination gun manufactured by Asahi Sunac Co., Ltd.), and therefore has four paint inlets 46A1, 46A2, 46.
Four types of first paint 6 supplied from A3, 46A4, etc.
The mixing ratio of A to 6D can be adjusted by electromagnetic valves corresponding to the respective paint inlets 46A1 and the like, and can be applied. As shown in FIG. 2, the first coating guns 46A to 46D are arranged linearly in a width direction (vertical direction in the figure) orthogonal to the conveying direction of the article 2 (arrow direction in the figure). Thus, they are arranged in the front row in the transport direction. And the first paint gun 46A
Are arranged at positions where the application ranges of the first paints 6A to 6D sprayed from the adjacent first paint guns 46A and the like on the workpiece 2 overlap each other, as indicated by the broken lines in the drawing. .

Each of the second coating guns 47A and 47B is a normal airless gun. The second coating guns 47A and the like are linearly arranged in a row in a width direction (vertical direction in the drawing) orthogonal to the conveying direction of the workpiece 2 and the second
The application range of the second paint 7 sprayed from the painting gun 47A or the like on the workpiece 2 is arranged at a position where the application areas overlap each other. The third coating guns 48A to 48C are also ordinary airless guns, similarly to the second coating guns 47A and 47B. The third coating gun 48A and the like
Application of the third paint 8 sprayed from the adjacent third paint gun 48A or the like on the workpiece 2 in a line in a line in the width direction (vertical direction in the figure) orthogonal to the transport direction of the third paint 8 The ranges are arranged at overlapping positions.

Each of the fourth coating guns 49A to 49D is a blur air gun capable of forming a blur pattern on the article 2 to be coated. And the fourth paint gun 49A etc.
Width direction perpendicular to the conveying direction of the workpiece 2 (vertical direction in the figure)
4th painting gun 49 which is arranged in a line in a straight line
The application areas of the fourth paints 9A and 9B sprayed from A and the like on the workpiece 2 are arranged at positions where the application areas overlap each other.
Each of the fifth coating guns 50A to 50D is a piece gun that can form a loose-blown pattern (scatter pattern). The fifth coating gun 50A and the like are linearly arranged in a row in the width direction (vertical direction in the drawing) orthogonal to the conveying direction of the article 2 and are ejected from the adjacent fifth coating gun 50A and the like. The application range of the fifth coating material 10 on the workpiece 2 is disposed at a position where the coating ranges overlap each other.

The first to fifth coating guns 46 to 5
The intervals between the rows of 0 are all about 30 cm, and the first to fifth coating guns 46 to 50 of the preceding and succeeding rows are arranged.
The application ranges on the object 2 are spaced apart from each other so that no rows overlap each other. The coating apparatus 1 includes a number of transport rollers 3 below the first to fifth coating guns 46 to 50, and the workpiece 2 is transported at a speed of 30 m / min in a direction indicated by an arrow in FIG. Is done.

When the object 2 is put into the coating apparatus 1, the object 2 is transported on the transport rollers 3. Then, first, the first paint guns 46A to 46A located in the front row
D, the first paints 6A to 6D are applied.
The second paint 7 is applied by the paint guns 47A and 47B, then the third paint 8 is applied by the third paint guns 48A to 48C, and further, the fourth paint guns 49A to 49D.
The fourth paints 9A and 9B are applied by the
The fifth paint 10 is applied by the paint guns 50A to 50D.

Specifically, the first coating guns 46A to 46D
, The first paints 6A to 6D pumped by the first paint pumps 26A to 26D from the first paint tanks 16A to 16D through the first paint supply pipes 36A to 36D.
Is sprayed from the first coating gun 46 </ b> A or the like, and is applied to the workpiece 2. At this time, the first paint guns 46A and the like mix and eject the four types of first paints 6A to 6D supplied from the four paint inlets 46A1 to 46A4 and the like in the first paint gun 46A and the like. . Each of the first paint guns 46A and the like has an electromagnetic valve, and is opened and closed at a high speed so that the mixing ratio of the four types of first paints 6A and the like can be adjusted. Therefore, the first paint gun 46
A base coat with the first paint 6A or the like having a desired mixing ratio can be easily applied on the work piece 2 without previously mixing the four kinds of first paints 6A and the like supplied to the A and the like. Can be. By this coating, as shown in a plan view of the object 2 in FIG. 3A, the color A, the color B, the color C, and the color D
A plain (indicated by hatching in the figure) coating film 61 in which colors are uniformly mixed is formed.

In the next coating by the second coating guns 47A, 47B, the second coating pumps 27A, 27B are supplied from the second coating tanks 17A, 17B through the second coating supply pipes 37A, 37B.
The second paint 7 pumped by 27B is sprayed from the second painting gun 47A or the like, and is applied to the workpiece 2. At this time, the second paint gun 47A or the like applies the second paint 7 to the object 2
Is applied near the center and not applied near both ends, so that a stripe pattern is formed on the article 2 to be coated. Further, the transport speed is as fast as 30 m / min, and the first coating guns 46A to 46A are used.
The distance between the row D and the row of the second coating guns 47A and 47B is 3
Since it is as short as 0 cm, the first paint 6A to 6D applied by the first paint gun 46A or the like (the surface of the coating film 61) is dried before the second paint gun 47A or the like applies the paint.
The paint 6A and the like and the second paint 7 are mixed on the work 2 to give a complex color. Therefore, by this painting,
As shown in FIG. 3B, the color of the undercoating by the first coating material 6A and the like and the E color by the second coating material 7 are intricately mixed on the object 2 to form a striped shape. The coating film 62 having the pattern 62A of various colors is formed.

In the next coating by the third coating guns 48A to 48C, the third coating pumps 28A to 28C are connected from the third coating tanks 18A to 18C through the third coating supply pipes 38A to 38C.
The third paint 8 pumped by 28C is sprayed from the third painting gun 48A or the like, and is applied to the entire surface of the workpiece 2. Also at this time, before the surface of the coating film 62 having the stripe pattern is dried, the coating can be performed by the third coating gun 48A or the like. Therefore, as shown in FIG. 6D, the second paint 7 and the third paint 8 are mixed on the object 2 to form a coating film 63 having a stripe-shaped more complicated color pattern 63A.

In the next coating with the fourth coating guns 49A to 49D, the fourth coating pumps 29A to 29D are connected to the fourth coating tanks 19A to 19D through the fourth coating supply pipes 39A to 39D.
The fourth paint 9A, 9B pumped by 29D is
It is sprayed from a coating gun 49A or the like, and is applied to the workpiece 2. At this time, among the fourth coating guns 49A and the like arranged in a straight line, every other fourth coating gun 49A, 49C ejects a fourth paint 9A of G color, and the other two fourth coating guns 49A, 49C. From the 4 paint guns 49B and 49D, an H color fourth paint 9
B is injected. Note that the fourth paint gun 49A and the like do not always spray the fourth paint 9A and 9B, but rather spray them only intermittently for a predetermined time. A blur pattern is formed.

Further, in a part of the substantially elliptical blur pattern, the G color of the fourth paint 9A and the H color of the fourth paint 9B injected by the adjacent fourth paint gun 49A are mixed, A pattern having a unique color is formed. In addition, the first to first coatings applied before the coating by the fourth coating gun 49A or the like.
Before the surface of the coating film 63 with the third coating materials 6 to 8 dries,
Since the coating can be performed by the fourth coating gun 49A or the like, the first to third coatings 6 to 8 previously applied and the fourth coatings 9A and 9B are mixed on the workpiece 2. Therefore, as shown in FIG. 4B, a coating film 64 having a complex color stripe pattern 64B and a more complex color substantially elliptical blur pattern 64A is formed on the object 2 to be coated. Is done.

In the last coating by the fifth coating guns 50A to 50D, the fifth coating pump 30A is supplied from the fifth coating tanks 20A to 20D through the fifth coating supply pipes 40A to 40D.
The fifth paint 10 pumped by 30D is sprayed from the fifth coating gun 50A or the like, and is applied to the workpiece 2. At this time, since the fifth coating gun 50A and the like are piece guns capable of forming a rose-blown pattern on the article 2 to be coated, an I-color rose-blown pattern (scattered spot) Pattern) is formed.

Further, the coating film 6 made of the first to fourth coating materials 6 to 9 applied before the coating with the fifth coating gun 50A or the like.
4 Before the surface is dried, the coating can be performed by the fifth coating gun 50A or the like.
Paints 6 to 9 and the fifth paint 10 are mixed on the object 2 to give a complex color. As a result, as shown in FIG. 5, it has a striped pattern 65B of a complex color and a blur pattern 65C of a substantially elliptical shape. The coating film 65 having the rose-shaped pattern 65A is formed. In this way, the coating of the workpiece 2 by the coating apparatus 1 is completed. Therefore, thereafter, the coating film 65 may be completely dried (cured) using heat, ultraviolet light, or the like.

As described above, in the coating apparatus 1 according to the present embodiment, each row of the first to fifth coating guns 46 to 50 in the width direction corresponds to the first to fourth coating guns previously applied. 6
Before drying the surfaces No. 9 to 9 (the surfaces of the coating films 61 to 64),
Since the first to fifth paints 6 to 10 are mixed with each other because they are arranged at intervals capable of applying the fourth to seventh paints 7 to 10,
It is possible to form a color or a pattern that cannot be represented by a conventional coating apparatus. In addition, since the first to fifth coating guns 46 to 50 which are arranged in a row in the width direction are arranged at positions where the application ranges on the workpiece 2 overlap each other, the fourth coating gun 46 to 50 is particularly preferable.
Different fourth paint 9 such as paint guns 49A-49D.
When A and 9B are supplied, a region where different paints overlap each other is formed on the work 2. For this reason, in this portion, it is possible to form a color or pattern that could not be represented only by the original fourth paints 9A and 9B. Further, since the first coating guns 46A to 46D, which are multicolor simultaneous mixing guns, are placed at the forefront, the color of the base can be freely formed.

Further, in the coating apparatus 1 of this embodiment, since the first to fifth paints 6 to 10 can be applied at once at short intervals, the production line is short, and the time and cost for coating are reduced. Can be. Further, the coating apparatus 1 has four paint tanks 1 of the same number as the four paint inlets 46A1 of the four-color simultaneous mixing gun (first paint guns 46A to 46D).
6A to 16D, a first paint supply pipe 3 for supplying the first paint 16A and the like from the four first paint tanks 16A and the like to the corresponding paint inlets 46A1 and the like of the first painting gun 46 and the like.
6A to 36D. Therefore, four kinds of first paints 6A to 6D can be similarly supplied to any of the first paint guns 46A and the like. Therefore, each first coating gun 6A
And the like, so that the paint of the same color can be output from all the first paint guns 6A, etc., to various colors from the first paint gun 6A, etc. Can be painted.

In this embodiment, the first paint gun 46 is used.
A-46D, four types of first paints 6A-6
Although D was mixed and injected, the mixing ratio of these can be freely set. Also, the first paint 6A or the like is always mixed at a predetermined ratio and sprayed to form the plain coating film 61 on the article 2 to be coated. By changing over time, the transport direction (Fig. 3
In (a) middle left and right directions), a coating film having a gradation of four kinds of first paints 6A and the like and a color in which four colors are mixed in a complicated manner can be formed. Also, any first
The coating guns 46A to 46D also spray the first paints 6A to 6D mixed at a predetermined ratio.
By changing the mixing ratio of the first paint 6A or the like for each 6A or the like, it is possible to form a complex color or pattern in the width direction (in the vertical direction in FIG. 3A), such as separate coating or a gradation pattern.

In the present embodiment, the second, third, fifth
The coating by the coating guns 47, 48, and 50 applies one kind of the second, third, and fifth paints 6, 7, and 10, respectively. 18,
By replacing the second, third, and fifth paints stored in the paint 20 with two or more different paints, coating films having more complex colors and patterns can be formed. In other words, by using two or more kinds of paints, there is a portion where different paints are simultaneously applied on the object 2 to be coated, so that different paints can be mixed with each other at this portion to form a complex color or pattern. .

(Embodiment 2) Next, Embodiment 2 will be described with reference to FIG. The coating apparatus 101 of the present embodiment applies the first and second paints 106 and 107 to the workpiece 2.
A plurality of first and second coating guns 146 and 147
A plurality of first and second paint tanks 116 and 117 for storing the first and second paints 106 and 107; and a first and second paint tank 116 and 1 for storing the first and second paints 106 and 107.
And a plurality of first and second paint supply pipes 136 and 137 for supplying the first and second paint guns 146 and 147 from the first and second paint guns 146 and 147.

Of these, two first paint tanks are used.
It has paint tanks 116A and 116B and two second paint tanks 117A and 117B. Then, the first paints 106A, 1A are stored in the first paint tanks 116A, 116B.
06B are stored respectively, and the second paint tank 117A,
117B stores second paints 107A and 107B, respectively. First paint tank 116A, 116B
The first paint supply pipes 136A and 136B extend from each of them, and are branched into four parts in the middle respectively, and are two-color simultaneous mixing guns (concentric guns manufactured by Anest Iwata Co., Ltd.) having two paint inlets. Primary paint guns 146A-146D
Are connected to each other. Specifically, the first paint supply pipe 136A is connected to the paint inlets 146A1, 146B1, 146C1, 146D1 of the first paint guns 146A to 146D.
And the first paint supply pipe 136B is connected to the paint inlets 146A2, 146B2, 146C2, 146D.
2 respectively.

The second paint tank 117A, 117B
The second paint supply pipes 137A and 137B extend from the second paint supply pipe 137A, and the second paint supply pipe 137A branches into two in the middle of the second paint supply pipe 137A.
The paint guns 147A and 147C are connected to the
The paint pipe 137B is connected to the second paint gun 147B. The second coating gun 147A and the like are the same as the second and third coating guns 47 and 48 of the first embodiment.
It is a normal airless gun. Further, the paint pumps (the first paint pumps 126A, 126B, and the first paint pumps 126A, 126B) are connected to the first and second paint supply pipes 136, 137 before the pipes branch from the first and second paint tanks 116, 117. 2 paint pumps 127A, 127B).

The first and second paint guns 146, 147
For the arrangement of the first paint guns 146A to 146D
Are arranged in a row in the width direction linearly, similarly to the first painting guns 46A to 46D of the first embodiment, and the second painting guns 147A to 147C are arranged in the third painting guns 48A to 48A of the first embodiment. Like 48C, they are lined up in a straight line in the width direction. The interval between these rows is about 30 cm, similarly to the interval between the rows in the above embodiment. Further, similarly, a plurality of transport rollers for transporting the workpiece 2 are provided below the first and second coating guns 146 and 147.

When the object 2 is put into the coating apparatus 101, the object 2 is conveyed by conveying rollers, and the first coating guns 146A to 146D are used for the first coatings 106A and 106A.
106B is applied, and then the second paint gun 147A-
The second paints 107A and 107B are applied by 147C. In the coating by the first coating guns 146A to 146D, the first coating pump 12 is supplied from the first coating tanks 116A and 116B through the first coating supply pipes 136A and 136B.
6A, the first paint 106A pumped by 126B,
106B is sprayed from the first coating gun 146A or the like, and is applied to the workpiece 2.

At this time, each of the first paint guns 146A, etc.
The first paints 106A and 106B of two types of J and K colors supplied from the two paint inlets 146A1 and 146A2 and the like.
Are mixed and sprayed in the first coating gun 46A and the like. Specifically, in the first embodiment, four kinds of paints are always mixed and applied at a predetermined mixing ratio, whereas in the present embodiment,
The two types of paints are mixed and jetted while changing the mixing ratio over time. Further, the injection is performed while changing the mixing ratio for each first coating gun. As a result, as shown in FIG. 7A, a coating film 161 having a complex color with gradation of J and K colors is formed in both the transport direction and the width direction.

In the next coating by the second coating guns 147A to 147C, the second paint 1 pumped by the second paint pumps 127A and 127B from the second paint tanks 117A and 117B through the second paint supply pipes 137A and 137B.
07A and 107B are sprayed from the third coating gun 147A and the like, and are applied to the workpiece 2. At this time, out of the three second coating guns 147A and the like, the second coating guns 147A and 147C at both ends are supplied with the second paint 107 of L color.
A is injected, and from the second paint gun 147B in the middle, M
Since the second paint 107B of the color is sprayed, a stripe pattern of a complex color in which the two colors are partially mixed is formed.

Further, similarly to the first embodiment, the surfaces of the first coatings 106A and 106B (the coating 161)
Before the surface is dried, the second paint guns 147A, 147
B can be applied, so that the first paint 106A or the like applied first and the second paint 107 applied later
A and the like are mixed on the substrate 2. Therefore, as shown in FIG. 7 (b), a complicated color stripe pattern 162 is formed on the substrate 2 with a complicated gradation.
The coating film 162 having A is formed, and the coating is completed.

Also in this embodiment, the first applied first
Before the surfaces of the paints 106A and 106B (the surface of the coating film 161) are dried, the next paints 107A and 107B are applied, so that the first and second paints 106 and 107 are mixed with each other to form a complicated pattern. And colors are formed. Further, the first and second paint guns 146 and 147 forming a line in the width direction are
Since the application areas on the object 2 overlap, complex patterns and colors are formed in the mixed portions. In addition, in the coating apparatus 101, the first and second coatings 106 and 107 can be applied at once at short intervals, so that the production line is short,
The time and cost for painting can be reduced.

The present invention has been described with reference to the first and second embodiments.
However, it is needless to say that the present invention is not limited to the first and second embodiments and can be appropriately modified and applied without departing from the gist of the present invention. For example, in the first embodiment, a four-color simultaneous mixing gun (first coating guns 46A to 46D), an airless gun (second coating guns 47A and 47B), and an airless gun (third coating gun 48A).
~ 48C), blur air gun (4th painting gun 49A ~ 4
9D) and a peace gun (fifth painting gun 50A to 50D). In the second embodiment, the two-color simultaneous mixing gun (first coating guns 146A to 146D) and the airless gun (second coating guns 147A to 147C) are applied in this order. However, the type and order of these
Can be appropriately changed in consideration of the designability of the device. However,
Since the multi-color simultaneous mixing gun is suitable for the coating of the base, it is preferable to arrange the coating apparatus 1, 101 in the front row and apply the coating first, as in the first and second embodiments. .

The types of the coating guns are not limited to those described above.
Any known materials can be used in consideration of the design properties of the article 2 to be coated. In each of the first and second embodiments,
Although the coating guns in the row arranged in the width direction are all the same, different types of coating guns may be arranged in consideration of the design of the article 2 to be coated. In the first embodiment, five rows of coating guns are arranged, and in the second embodiment, two rows of coating guns are arranged. However, even if the number of rows in which the coating guns are arranged in the width direction is one, as described in each of the first and second embodiments, the coating sprayed from the adjacent coating gun is applied on the workpiece 2. If the ranges are arranged so as to overlap each other, the paints from the adjacent paint guns are mixed to form a complex color or pattern that cannot be represented conventionally, for example, as shown in FIG. Can be.

In each of the first and second embodiments, the distance between the coating guns when viewed in the transport direction is slightly widened so that the paint sprayed from the front and rear rows of the coating guns on the object 2 to be coated. The coating areas are not overlapped. However, if the coating ranges from the coating guns in the front and rear rows overlap each other, it is possible to form a complex color and pattern different from those in the first and second embodiments. That is, the intervals between the rows can be adjusted in consideration of the design properties of the article to be coated 2 so that the coating ranges from the coating guns in the front and rear rows overlap each other. Further, the number and intervals of the coating guns belonging to the same row are not limited to those of the first and second embodiments, and can be changed as appropriate. Further, in each of the first and second embodiments, all the rows of the coating guns are arranged linearly in the width direction orthogonal to the transport direction, but they may be arranged in a staggered manner in the width direction.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a coating apparatus according to a first embodiment.

FIG. 2 is an explanatory view showing a state in which a coating gun is viewed from above in the coating apparatus according to the first embodiment.

3A and 3B are diagrams illustrating a state where an object to be coated is coated by the coating apparatus according to the first embodiment, wherein FIG. 3A is a diagram illustrating a state after coating by a first coating gun, and FIG. It is explanatory drawing which shows the state after coating with a coating gun.

4A and 4B are diagrams illustrating a state where an object to be coated is coated by the coating apparatus according to the first embodiment, wherein FIG. 4A is a diagram illustrating a state after coating by a third coating gun, and FIG. It is explanatory drawing which shows the state after coating with a coating gun.

FIG. 5 is a diagram illustrating a state in which an object to be coated is coated by the coating apparatus according to the first embodiment, and is an explanatory diagram illustrating a state after coating by a fifth coating gun.

FIG. 6 is an explanatory view showing a coating apparatus according to a second embodiment.

FIGS. 7A and 7B are diagrams illustrating a state where an object to be coated is coated by the coating apparatus according to the second embodiment, wherein FIG. 7A is an explanatory view illustrating a state after coating by a first coating gun, and FIG. It is explanatory drawing which shows the state after coating with a coating gun.

[Description of Signs] 1 Coating device 2 Object to be coated 3 Transport roller 6A, 6B First paint 7 Second paint 8 Third paint 9A, 9B Fourth paint 10 Fifth paint 16A, 16B, 16C, 16D First paint tank 17A, 17B Second paint tank 18A, 18B, 18C Third paint tank 19A, 19B, 19C, 19D Fourth paint tank 20A, 20B, 20C, 20D Fifth paint tank 36A, 36B, 36C, 36D First paint supply pipe 37A, 37B Second paint supply pipe 38A, 38B, 38C Third paint supply pipe 39A, 39B, 39C, 39D Fourth paint supply pipe 40A, 40B, 40C, 40D Fifth paint supply pipe 46A, 46B , 46C, 46D First paint gun 47A, 47B Second paint gun 48A, 48B, 48C Third paint gun 49A, 49 B, 49C, 49D Fourth coating gun 50A, 50B, 50C, 50D Fifth coating gun 101 Coating device 106A, 106B First coating 107A, 107B Second coating 116A, 116B First coating tank 117A, 117B Second coating Tank 136A, 136B First paint supply pipe 137A, 137B Second paint supply pipe 146A, 146B, 146C, 146D First paint gun 147A, 147B, 147C Second paint gun

Claims (7)

[Claims] 1. A plurality of coating guns which are arranged in a line in a straight line or a staggered manner in a width direction orthogonal to a conveying direction of an object to be coated, and which can spray a coating material onto the object to be coated. A coating apparatus comprising a plurality of rows arranged in the transport direction at intervals capable of applying the next paint before the dried paint surface is dried. 2. The coating apparatus according to claim 1, wherein at least one of the plurality of coating guns arranged in the plurality of rows is ejected from the coating gun adjacent in the width direction. A coating apparatus, wherein the coating ranges of the coating material on the object to be coated overlap each other. 3. The coating apparatus according to claim 1, wherein, among the plurality of coating guns arranged in a plurality of rows, the plurality of coating guns forming the frontmost row in the transport direction include two or more coating guns. A plurality of multi-color simultaneous mixing guns each having an inflow port, and are arranged at positions where the application ranges of the paint sprayed from the multi-color simultaneous mixing guns adjacent in the width direction on the object to be coated overlap with each other. A coating device, characterized in that: 4. A plurality of coating guns arranged in a straight line or in a staggered manner in a width direction orthogonal to a conveying direction of an object to be sprayed and capable of spraying a coating material toward the object to be coated, wherein said plurality of coating guns are adjacent to each other. A plurality of coating guns arranged at positions where the application ranges of the paint sprayed on the object to be coated overlap with each other, a plurality of paint tanks storing the paint, and a plurality of paint tanks corresponding to A coating apparatus, comprising: a plurality of paint supply pipes for supplying the paint to be stored to at least one or more of the coating guns. 5. The coating apparatus according to claim 4, wherein said plurality of coating guns are a plurality of multi-color simultaneous mixing guns each having at least two or more predetermined number of paint inlets. The number is the same as the predetermined number of the paint inlets, and the plurality of paint supply pipes are configured to store the paint to be stored in the paint inlets of the corresponding multicolor simultaneous mixing gun from the paint tank of the predetermined number. A coating device characterized by supplying each. 6. A plurality of first coating guns which are arranged in a line in a width direction orthogonal to the conveying direction of the object to be coated in a linear or staggered manner, and which can spray a first paint toward the object to be coated. And
A plurality of first paint guns in which application ranges of the first paint sprayed from the adjacent first paint gun on the object to be coated overlap each other; a plurality of first paints storing the first paint A corresponding at least one of the first paint tanks;
A plurality of first paint supply pipes for supplying the first paint to be stored in the first paint gun, respectively, and a plurality of first paint supply pipes arranged behind the first paint gun in the transport direction;
A plurality of second coating guns which are arranged in a line in a straight line or a staggered manner in a width direction orthogonal to the transport direction, and are capable of spraying a second paint toward the object to be coated; 2
The application range of the second paint sprayed from the coating gun on the object to be coated overlaps with each other, and the second paint is arranged at an interval where the second paint can be applied before drying the applied first paint surface. A second paint gun, a plurality of second paint tanks storing the second paint, and at least one corresponding one of the plurality of second paint tanks.
A coating apparatus comprising: a plurality of second paint supply pipes for supplying the second paint to be stored to the second paint gun. 7. The coating apparatus according to claim 6, wherein the plurality of first coating guns are a plurality of multicolor simultaneous mixing guns each having two or more predetermined number of paint inlets. The number of one paint tank is the same as the predetermined number of the paint inflow ports. The plurality of first paint supply pipes are provided to supply the paint flow of the corresponding multicolor simultaneous mixing gun from the predetermined number of the first paint tanks. A coating apparatus, wherein the first paint to be stored is supplied to an inlet.