JP3715463B2 - Drawing and painting equipment - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a drawing and painting apparatus used for drawing and painting a desired pattern or character on an automobile body or various wall surfaces.
[0002]
[Prior art]
As is well known, in the automobile manufacturing field, there are cases where an automobile manufacturer draws and paints a desired pattern or character on an automobile body for reasons such as improving the design of the automobile. In addition, many painting factories in the city, for example, draw and paint company names on the bodies of so-called commercial vehicles in response to customer demands. If such drawing painting is performed manually, the efficiency is low and the operation cost is expensive.
[0003]
Therefore, conventionally, there are drawing painting methods described in, for example, Japanese Patent Application Laid-Open Nos. 9-94527 and 9-141838. In this conventional drawing painting method, a predetermined two guns are arranged so as to be capable of individually ejecting three primary colors of cyan, magenta, and yellow (CMY), or a plurality of colors of ink paints to which black (K) is added. In this method, the original picture is drawn and painted on the automobile body by driving the paint gun based on the image data of a desired original picture that is provided so as to be movable in the dimensional direction and is taken in by a computer in advance. According to such a method, the drawing painting work on the automobile body can be mechanized to achieve automation thereof, and the work cost can be reduced.
[0004]
[Problems to be solved by the invention]
However, in the conventional drawing painting method, a desired pattern is directly drawn and painted on the surface of the automobile body by directly spraying the ink paint for drawing on the surface of the automobile body. It was happening.
[0005]
That is, as the body color of an automobile, for example, there are various colors including red, blue, black, etc., and colors other than the white system are often used. However, in the past, when a desired pattern was drawn and painted on an automobile body of a color other than white, the drawn and painted pattern was affected by the color of the automobile body. In some cases, the colors and colors would be quite different. More specifically, when the color development by the ink paint discharged from the paint gun is determined by superimposing the ink paints of each color of CMY (or CMYK) according to the so-called subtractive color mixing principle, for example, the automobile body is red The red color of the automobile body is superimposed on the ink paint, and the color becomes a different color from the original color. In the first place, the conventional control of drawing painting is the same as the original intended color when drawing painting is applied to a white background, as in the case of a color printer device of a general OA device used for color printing on white paper. In order to be reproduced, the ink paint of each color of CMY (or CMYK) is merely discharged. Therefore, conventionally, when the body color of an automobile is a color other than white, it is difficult to properly finish the pattern to be drawn and painted to the originally intended color and tone, and this need to be resolved. there were.
[0006]
The present invention has been conceived under such circumstances, and even if the drawing target surface is a color other than the white system, the pattern drawn and painted on the drawing target surface is the drawing target surface. It is an object of the present invention to prevent a pattern that has a desired color from being greatly different from that originally intended due to the influence of the color and to draw and paint a pattern having a desired color appropriately and efficiently.
[0007]
DISCLOSURE OF THE INVENTION
In order to solve the above problems, the present invention takes the following technical means.
[0008]
  According to the present invention, a drawing coating apparatus is provided. The drawing coating apparatus includes a coating gun having a plurality of drawing nozzles for discharging ink paints for drawing a plurality of colors toward a drawing target surface, and the coating gun intersects a predetermined x direction. a drawing coating apparatus comprising: an operating means for moving in the y direction; and a base coating provided at a position shifted in at least the x direction or the y direction with respect to the plurality of drawing nozzles And the base coating nozzle moves to a position opposite to the drawing target area of the drawing target surface prior to the plurality of drawing nozzles, and the base coating is applied to the drawing target area. Configured to eject ink paint forAnd the position can be changed in the vertical direction relative to the plurality of drawing nozzles.It is characterized by being.
[0009]
Preferably, the ink paint for base coating is white or a white color having a color close thereto. In the present invention, the ink paint for base coating may be a color such as silver.
[0010]
  In the present invention, by applying a base coating to a drawing target area of a drawing target surface by using a base coating nozzle that moves in advance of a plurality of drawing nozzles, a desired color is applied on the base coating surface. A pattern can be drawn and painted using a plurality of drawing nozzles. Therefore, in the present invention, unlike the conventional means in which a desired pattern is directly drawn and painted on the drawing target surface, the drawing target surface can be obscured by the base coating, and the drawing target surface has a color other than the white system. Even in some cases, it is possible to prevent the pattern that has been drawn and painted from being greatly different from the originally intended color by being influenced by the color of the drawing target surface. Of course, if the color of the base coating is set to white or a color close thereto, the pattern painted and painted can be prevented from appearing different from the original color due to the influence of the color of the base coating. As a result, in the present invention, even when the drawing target surface has a color other than the white system, the desired pattern can be drawn and painted appropriately and efficiently in the color and tone as originally intended. A special effect is possible.Moreover, according to such a structure, the space | interval of the up-down direction of the nozzle for base coating and the several nozzle for drawing can be increased / decreased adjusted. Therefore, when applying the base coating and drawing coating to the desired drawing target surface by repeatedly moving the plurality of drawing nozzles and base coating nozzles horizontally while shifting the position by a certain pitch in the vertical direction, It is possible to adjust the time from when the base coat is applied to when the drawing is performed on the base coat surface to an optimum time for drawing paint, for example, even though the base coat is not dried. Thus, it is possible to appropriately and easily eliminate the fact that the drawing painting is performed.
[0011]
In a preferred embodiment, the base coating nozzle is attached to the coating gun.
[0012]
According to such a configuration, the base coating nozzle can be appropriately moved in accordance with the movement of the coating gun having a plurality of drawing nozzles, and the base coating nozzle precedes the plurality of drawing nozzles. There is no need to additionally provide a drive source for moving the projector. Therefore, it is possible to prevent the structure of the entire apparatus from becoming complicated or large.
[0015]
In another preferred embodiment, an air nozzle is provided, and the plurality of air nozzles are arranged at positions facing a base coating surface formed in the drawing target area by discharging ink paint from the base coating nozzle. The drawing nozzle is moved in advance, and air for coating and drying is blown onto the base coating surface.
[0016]
According to such a configuration, after the undercoating is applied to the area to be drawn by discharging the ink paint from the undercoating nozzle, the undercoating can be quickly dried by blowing the air for drying the paint. it can. Then, a desired pattern can be drawn and painted on the base coating surface that has been subjected to the drying process by using ink paint discharged from a plurality of drawing nozzles. Therefore, it is possible to avoid drawing a desired pattern on the surface without drying the base coating, and it is possible to prevent the drawing ink paint applied on the base coating surface from bleeding. As a result, it becomes possible to draw and paint a desired pattern in a more fashionable manner. Further, if the base coating surface can be dried in a short time, the ink paint discharging operation from the drawing nozzle toward the base coating surface can be performed earlier than the base coating operation. Therefore, the efficiency of a series of painting operations can be improved.
[0017]
In another preferred embodiment, the air nozzle has an air outlet located between the tip of the base coating nozzle and the tips of the plurality of drawing nozzles, and the air outlet Air for coating and drying is blown out between the ink paint spraying region by the base coating nozzle and the ink paint spraying region by the plurality of drawing nozzles.
[0018]
According to such a configuration, for example, even if a situation occurs in which a part of the ink paint for base coating discharged from the nozzle for base coating toward the drawing target surface is repelled by the drawing target surface, It is possible to prevent the ink paint from entering the ink paint spraying region by the plurality of drawing nozzles. That is, the air blown out from the air nozzle functions as a so-called air curtain, and the ink paint discharged from the base coating nozzle enters the ink paint spraying region by the plurality of drawing nozzles. It is preferably blocked by air. Therefore, it is possible to prevent the base coating ink paint from being unfairly attached to a portion that has already been painted with the drawing ink paint discharged from the plurality of drawing nozzles. It is possible to prevent such a problem that the printed pattern is soiled by the ink paint for base coating. Further, according to the above configuration, it is possible to make the base coating nozzle and the plurality of drawing nozzles quite close to each other with the air blowing port interposed therebetween, which is advantageous in reducing the size of the coating gun.
[0019]
Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the drawings.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be specifically described with reference to the drawings.
[0021]
FIG. 1 is a schematic perspective view showing an example of a drawing coating apparatus according to the present invention. FIG. 2 is a partial cross-sectional side view showing the structure of the coating gun and its peripheral portion of the drawing coating apparatus shown in FIG. FIG. 3 is a front view of the coating gun of the drawing coating apparatus shown in FIG.
[0022]
In FIG. 1, the drawing and painting apparatus A includes a frame 1, a guide rail 2, a moving unit 3, a painting gun 4, and a personal computer 8.
[0023]
The frame 1 is formed in a generally hollow rectangular frame shape, and a pair of left and right upright standing members 10a, 10b and upper and lower ends of the upright members 10a, 10b are connected to each other. A pair of horizontal members 11a and 11b is provided.
[0024]
The guide rail 2 extends in the horizontal direction (x direction), and can be raised and lowered in the vertical direction (y direction) along the standing members 10a and 10b while maintaining the horizontal state by driving the first motor M1. As means for allowing the guide rail 2 to move up and down by driving the first motor M1, for example, pulleys 13a and 13b driven and rotated by the first motor M1 and driven and rotatable pulleys 13c and 13d provided thereabove. A mechanism is employed in which both ends of the guide rail 2 in the longitudinal direction are connected to the timing belts 12a and 12b wound around the guide belt 2 and the guide rail 2 is moved up and down as the timing belts 12a and 12b circulate. Of course, the present invention is not limited to this, and for example, the guide rail 2 may be provided so as to be movable up and down using a rack and pinion mechanism. As the first motor M1, for example, a pulse motor is used so that the raising / lowering operation of the guide rail 2 can be controlled with high accuracy. The same applies to the second motor M2 described later.
[0025]
The moving unit 3 is supported by the guide rail 2 and is movable in the x direction along the guide rail 2 by driving the second motor M2. As a means for moving the moving unit 3 in the x direction, for example, as clearly shown in FIG. 2, the moving unit 3 is provided with a pinion gear 30 that meshes with the rack gear 12 attached to the side surface of the guide rail 2. A structure in which the pinion gear 30 is drivingly connected to the driving shaft 32 of the second motor M2 through bevel gears 31a and 31b is employed. On the moving unit 3, a painting gun 4 is attached. Therefore, the painting gun 4 is movable in the upright plane direction between the x direction and the y direction in accordance with the movement operation of the moving unit 3. The coating gun 4 may be movable in the x direction and the z direction perpendicular to the y direction with respect to the moving unit 3. If the coating gun 4 can be moved also in the z direction, for example, as shown by an imaginary line in FIG. 2, when the drawing target surface 7 has a step H in the z direction, or the drawing target surface 7 is in the z direction. In such a case, the distance between the painting gun 4 and the drawing target surface 7 can be kept constant by moving the painting gun 4 in the z direction, which is preferable.
[0026]
The coating gun 4 includes a plurality of drawing nozzles 4 a to 4 d, a base coating nozzle 5, and an air nozzle 6.
[0027]
The plurality of drawing nozzles 4a to 4d are for drawing a total of four colors by adding black (hereinafter abbreviated as “K”) to the basic three primary colors of cyan, magenta, and yellow (hereinafter abbreviated as “CMY”). The ink paints are individually ejected toward the front of the coating gun 4. The ink paints of the four colors in total can be stored in the ink tanks 40a to 40d, respectively. As a mechanism for ejecting the ink paints of the plurality of colors from the drawing nozzles 4a to 4d, an ink spray system or an ink jet system mechanism for ejecting the ink paint as ink droplets is adopted, and the coating gun 4 is CMYK. It is possible to apply a subtractive color-mixing color coating method in which a desired color is formed by superimposing ink paints of each color in dot units. As clearly shown in FIG. 3, the nozzle openings of the plurality of drawing nozzles 4a to 4d are displaced by a certain pitch P1 in the x direction and are also displaced by a certain pitch P2 in the y direction. are doing.
[0028]
The base coating nozzle 5 discharges white ink paint for base coating in the form of ink droplets toward the front of the coating gun 4 by an ink spray type or ink jet type mechanism. As the white ink paint, for example, an ink paint using titanium oxide having an average particle diameter of 0.5 μm as a pigment is applied, and this ink paint can be stored in the ink tank 50a. The nozzle diameter of the base coating nozzle 5 is larger than the nozzle diameter of each of the drawing nozzles 4a to 4d. This is because, as will be described later, the coating film thickness obtained by discharging ink from the base coating nozzle 5 is made larger than the coating film thickness obtained by discharging ink from the drawing nozzles 4a to 4d.
[0029]
The air nozzle 6 is for blowing air for drying the paint toward the front of the paint gun 4. As clearly shown in FIG. 2, the coating gun 4 is provided with a fan 61 driven and rotated by the third motor M <b> 3 and a heater 62 for heating air taken in from the outside by the fan 61. When the air heated by the heater 62 is supplied to the air nozzle 6, the air is blown out from the air outlet 60. However, the invention of the present application is not limited to this, and heating air generated at a position different from the coating gun is not provided on the coating gun without mounting a heating air generating device including a fan or a heater on the air nozzle 6 using a pipe or the like. It does not matter even if it supplies to. As clearly shown in FIG. 3, the air outlet 60 has a flat shape elongated in the x direction, and the drawing nozzles 4 a and 4 b close to the tip of the base coating nozzle 5 and the base coating nozzle 5. There is an opening between.
[0030]
In FIG. 1, a personal computer 8 controls the driving of the motors M <b> 1 and M <b> 2 to control the position of the painting gun 4 and controls the discharge operation of various ink paints from the painting gun 4. The personal computer 8 reads an image of a document on which a pattern, characters, etc. are displayed with a color scanner device (not shown), or captures a desired image from a CD-ROM set in a CD drive. Can be stored, and the RGB gradation level of the original image data is converted into the gradation level for each color of CMY and the K output signal necessary for drawing and painting. After that, the image signal can be output. The ink paint discharge operation from the drawing nozzles 4a to 4d and the drive operations of the motors M1 and M2 are performed based on the image signal of the original image output from the personal computer 8. The ink paint discharge operation from the base coating nozzle 5 is controlled separately from the drawing nozzles 4a to 4d, as will be described later, but this control is also controlled by the personal computer 8. Also, the personal computer 8 can control the on / off switching of the blowing of heated air from the air nozzle 6.
[0031]
Next, the operation and action of the above-described drawing coating apparatus A will be described.
[0032]
The drawing / coating apparatus A is used for, for example, a drawing / coating application to an automobile body for which normal color painting has been completed. In this case, the surface of the automobile body becomes the drawing target surface 7, and the drawing coating apparatus A is set so that the painting gun 4 can move in the xy direction while facing the drawing target surface 7. When drawing and painting, as shown by the phantom lines in FIG. 1, the painting gun 4 moves the first line L1 from the start point N1 of the upper left corner of the plane surrounded by the frame 1 in the x direction, and then 1 When the end of the second line L1 is reached, the second line L2 is moved in the x direction after descending in the y direction by a constant pitch P3. The coating gun 4 moves sequentially from the upper side to the lower side of the plane surrounded by the frame 1 by repeating the movement in the x direction and the lower movement in the y direction.
[0033]
Therefore, when the coating gun 4 moves in such a movement locus, the base coating nozzle 5 moves in a form preceding the air nozzle 6 and the drawing nozzles 4a to 4d, and is delayed from the base coating nozzle 5. The air nozzle 6 moves, and further, the drawing nozzles 4a to 4d move behind the air nozzle 6. The pitch P3 has the same dimension as the pitch P2 in the y direction of the plurality of drawing nozzles 4a to 4d of the coating gun 4 described in FIG. The pitch P4 between the base coating nozzle 5 and the drawing nozzle 4a at the lowest position is an integral multiple of the pitch P2 (= P3). Accordingly, when the coating gun 4 is moved along the above-described movement locus, each of the drawing nozzles 4a to 4d follows the movement locus of the base coating nozzle 5.
[0034]
As clearly shown in FIG. 2, during the movement of the coating gun 4, white ink paint is discharged from the base coating nozzle 5 under the control of the personal computer 8, and the white base coating film 9 is applied to the drawing target surface 7. Is formed. This base coating is performed only on the drawing target area of the drawing target surface 7 where a desired pattern is drawn and painted. The base coating is so-called solid coating. Therefore, even if the drawing target surface 7 has a color other than white, such as red or blue, for example, the base coating film 9 can make all portions of the drawing scheduled area of the drawing target surface 7 white.
[0035]
When the above base coating is being performed, heated air is blown out from the air outlet 60 of the air nozzle 6, and this heated air is blown to the surface of the base coating film 9, that is, the base coating surface 9a. Therefore, the base coating film 9 is forcibly dried in a short time. The air nozzle 6 may be configured to constantly blow out heated air while the coating gun 4 is moving. However, instead of this, for example, the heated air may be temporarily blown out only when the air blowing port 60 faces the base coating surface 9a.
[0036]
The plurality of drawing nozzles 4a to 4d discharge ink paints of a predetermined color when the nozzles 4a to 4d respectively reach positions where ink should be discharged while the coating gun 4 is moving. As a result, a desired pattern or pattern such as a character is drawn and painted on the base coating surface 9a. Therefore, in the drawing coating apparatus A, even when the drawing target surface 7 has a color other than the white color system, the drawing target surface 7 is concealed by the white base coating film 9, and the drawing coating is performed. The background of the printed pattern can be white. As a result, the color of the drawn and painted pattern can be made unaffected by the color of the drawing target surface 7, and the color is the same as or substantially the same as the original image.
[0037]
In particular, since the nozzle diameter of the base coating nozzle 5 is larger than the nozzle diameters of the drawing nozzles 4a to 4d, the film thickness of the base coating film 9 is set to a film for drawing coating with ink paints of CMYK colors. It can be thicker than the thickness. For example, while the film thickness of each color of the drawing coating is 3 μm or less, for example, the thickness of the white base coating film 9 can be 3 to 20 μm. In this way, it is possible to more reliably conceal the color of the drawing target surface 7. That is, the white ink paint has lower concealability than other chromatic color ink paints, and when the base coating film 9 is thin, the color of the drawing target surface 7 is easily transparent. However, if the film thickness of the base coating film 9 is increased as in the present embodiment, such a problem can be eliminated, and the drawn and painted pattern is surely finished with the same color as originally intended. Is possible. However, the present invention is not limited to this, and the color of the drawing target surface 9 may be in a state where it can be seen through the base coating film 9 somewhat. This is because even in this case, the color of the drawn and painted pattern can be brought close to the originally intended color.
[0038]
Further, in this drawing coating apparatus A, since the surface coating film 9 is forcibly heated and dried with heated air and then the surface is subjected to drawing coating, the ink paint for drawing coating is applied to the surface coating surface. It is also possible to prevent bleeding at 9a. When the drawing target surface 7 is uneven, the white ink paint sprayed from the base coating nozzle 5 onto the drawing target surface 7 may be repelled upward, for example. Above the position where the white ink paint is sprayed, the heated air blown from the air nozzle 6 flows to form a so-called air curtain. Therefore, the white ink paint is appropriately prevented from traveling above the air flow. As a result, the white ink paint does not scatter on the drawing paint surface, and the drawing paint surface is not unduly soiled by the white ink paint.
[0039]
In addition, after the drawing painting mentioned above is complete | finished, Preferably, clear painting is given on the drawing painting surface. This clear coating is a separate process from the above-mentioned drawing coating, and is an operation performed using a dedicated coating device. Applying a thermosetting or room temperature curing type clear paint containing an ultraviolet absorber, This is done by baking. By applying such clear coating, the painted surface can be protected, and the so-called suppression of the ink coating can be achieved by allowing the clear coating to enter the fine gaps where the ink coating is not applied in the drawing painted area. The effect of preventing peeling of the paint can also be obtained.
[0040]
FIG. 4 is a main part front view showing another example of the drawing and painting apparatus according to the present invention. In the figure, the same or similar elements as those of the previous embodiment are denoted by the same reference numerals.
[0041]
In the drawing coating apparatus shown in the figure, a painting gun 4A having drawing nozzles 4a to 4d and a plurality of ink tanks 40a to 40d and a coating gun 4B having a base coating nozzle 5 and an ink tank 50a are provided separately. It has the structure which was made. The paint gun 4A is movable in the x direction, the y direction, and, if necessary, the z direction, like the paint gun 4 of the previous embodiment. On the other hand, the painting gun 4B is attached to a guide rail 48 supported by the painting gun 4A via a connecting member 49, and is provided to move in the same direction as the painting gun 4A along with the painting gun 4A. ing. The guide rail 48 extends in the y direction (vertical direction), and the coating gun 4B can be adjusted in height within an appropriate stroke Ha by moving along the guide rail 48. As a means for making the paint gun 4B adjustable in height, for example, a bolt-like pressing body 47 capable of reciprocating in a direction facing the guide rail 48 by a rotation operation is provided at an appropriate position of the paint gun 4B. Means are adopted. According to such means, the coating gun 4B can be arbitrarily moved along the longitudinal direction of the guide rail 48 in a state where the pressing body 47 is loosened. When the pressing body 47 is tightened and the tip 47a is pressed against the surface of the guide rail 48, the entire coating gun 4B can be fixed to a predetermined height by the pressing force. The coating gun 4B is also provided with an air outlet 60.
[0042]
According to such a configuration, the vertical interval between the drawing nozzles 4a to 4d and the base coating nozzle 5 can be adjusted up or down. Therefore, as in the case of the coating gun 4 of the previous embodiment, the two painting guns 4A and 4B are subjected to a horizontal operation each time the coating guns 4A and 4B are lowered by a certain pitch, thereby performing the base painting and the painting painting on a predetermined drawing target surface. In this case, the time until the drawing nozzles 4a to 4d reach the location facing the ground coating surface after the base coating is performed by the base coating nozzle 5 is set to a time convenient for the drawing coating. Is possible. For example, when the film thickness of the base coating is increased, it takes longer to dry than when the film thickness is reduced. Therefore, in such a case, by increasing the vertical interval between the drawing nozzles 4a to 4d and the base coating nozzle 5, the base is removed when a sufficient time has passed for the coating to dry after the base coating. It can be set so that drawing painting is performed by the drawing nozzles 4a to 4d on the painting surface, and appropriate drawing painting can be performed.
[0043]
The specific configuration of each part of the drawing coating apparatus according to the present invention is not limited to the above-described embodiment, and various design changes can be made.
[0044]
For example, a plurality of base coating nozzles 5 may be provided. In addition, as an operation means for moving a coating gun having a plurality of drawing nozzles, various mechanisms other than the mechanisms described in the above embodiments can be adopted, as well as the base coating nozzle 5. As for, it may be moved by an operation mechanism different from that of a painting gun having a plurality of drawing nozzles. Furthermore, the x direction and y direction referred to in the present invention are not necessarily limited to the horizontal direction and the vertical direction, and specific directions thereof can be appropriately selected. Furthermore, it is preferable to use heated air as the air for drying the paint, but it is not limited to this, and air may be blown at an unheated room temperature level.
[0045]
In the above-described embodiment, the case where drawing painting is applied to the automobile body has been described as an example. However, the present invention is not limited to this, and its specific application is not limited. The drawing and painting apparatus according to the present invention is used for drawing and painting on various types of vehicles other than automobile bodies, for example, various vehicles such as ships and railroad cars, walls of buildings and buildings, signs, and other various parts. Is possible.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an example of a drawing coating apparatus according to the present invention.
2 is a partial cross-sectional side view showing the structure of a coating gun and its peripheral portion of the drawing coating apparatus shown in FIG. 1;
3 is a front view of a painting gun of the drawing painting apparatus shown in FIG. 1. FIG.
FIG. 4 is a main part front view showing another example of the drawing and painting apparatus according to the present invention.
[Explanation of symbols]
A Drawing and painting equipment
M1 first motor
M2 second motor
1 frame
2 Guide rail
3 Mobile unit
4,4A paint gun
4a to 4d Nozzle for drawing
5 Nozzle for base coating
6 Air nozzle
7 Drawing surface
8 Personal computer
60 Air outlet

Claims (5)

A paint gun having a plurality of drawing nozzles for discharging ink paints for drawing a plurality of colors toward a drawing target surface, and the paint gun is moved in a predetermined x direction and a y direction intersecting with the predetermined x direction. A drawing and painting apparatus comprising:
A base coating nozzle provided at a position shifted in at least the x direction or the y direction with respect to the plurality of drawing nozzles; and
The base coating nozzle moves to a position facing the drawing target area of the drawing target surface prior to the plurality of drawing nozzles, and discharges the ink paint for base coating to the drawing target area. A drawing coating apparatus, which is configured and is capable of changing the position in the vertical direction relative to the plurality of drawing nozzles .   The drawing coating apparatus according to claim 1, wherein the ink coating for base coating is white.   The drawing coating apparatus according to claim 1 or 2, wherein the base coating nozzle is attached to the coating gun. An air nozzle, and the air nozzle precedes the plurality of drawing nozzles at a position facing a base coating surface formed in the drawing target area by discharging ink paint from the base coating nozzle. The drawing coating apparatus according to any one of claims 1 to 3 , wherein the drawing coating apparatus is configured to move and to blow air for drying the coating onto the ground coating surface. The air nozzle has an air blowing port located between the tip of the base coating nozzle and the tip of the plurality of drawing nozzles, and ink spraying by the base coating nozzle from the air blowing port. The drawing / coating apparatus according to claim 4 , wherein the drawing / coating apparatus is configured to blow air for coating / drying between an application region and an ink paint spraying region by the plurality of drawing nozzles.

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