JP6980063B1 - painting booth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a painting booth capable of significantly reducing air volume and saving energy while being able to carry out airflow control that does not cause painting defects. SOLUTION: A coating chamber 2 in which a coating object W is spray-painted, an air supply chamber 3 for supplying air into the coating chamber 2 substantially vertically downward through a ceiling blowing portion 21 of the coating chamber 2, and painting. In the painting booth 1 provided with the exhaust chamber 4 for sucking the air and the unpainted paint mist in the chamber 2 through the floor discharge portion 24 of the painting chamber 2, the direction substantially vertically downward from the direction substantially facing the unpainted paint mist. The first side air supply unit 6 that ejects air substantially radially is provided on the side walls 25a and 25b of the coating chamber 2 at a position higher than the height of the object W to be coated in the coating chamber 2. [Selection diagram] Fig. 1

Description

The present invention includes a coating chamber in which an object to be coated is spray-painted, an air supply chamber that supplies air to the coating chamber substantially vertically downward through a ceiling blowout portion of the coating chamber, and air in the coating chamber. The present invention relates to a painting booth provided with an exhaust chamber for sucking uncoated paint mist through a floor discharge portion of the painting chamber.

As one of the methods for saving energy and reducing carbon dioxide emissions when operating the painting booth, for example, reducing the fan power of the air supply fan connected to the air supply chamber, that is, reducing the air volume. Is possible.

However, if the air volume is significantly reduced while maintaining a uniform flow, the air volume near the side wall of the coating chamber is reduced. As a result, the uncoated paint mist is scattered toward the side wall surface of the coating chamber, and the side wall surface is easily soiled.

Therefore, in order to prevent the side wall surface from becoming dirty, for example, if all the airflow is set to be supplied to the side wall side, the air flowing through the center of the painting chamber disappears, and the color is applied to a series of objects to be continuously painted. Since fog is likely to occur and the airflow around the object to be coated is eliminated, the finish quality of the coating film may be adversely affected.

Therefore, for example, as shown in Patent Document 1, a painting booth configured to supply high-speed air in a nozzle format into a painting chamber is known.

Japanese Unexamined Patent Publication No. 53-40036

However, when air is supplied from the nozzle, the flow of air discharged from the nozzle is fast, so that the surrounding air is attracted. As a result, the air flow in the coating chamber is disturbed and vortices are generated in various places, so that it becomes difficult to efficiently guide the uncoated paint mist to the exhaust chamber, and coating defects are likely to occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a painting booth capable of significantly reducing air volume and saving energy while being able to carry out airflow control that does not cause painting defects. There is something in it.

The feature of the painting booth according to the present invention is a painting room in which a painting object is spray-painted.
The air supply chamber that supplies air to the coating chamber substantially vertically downward through the ceiling blowout portion of the coating chamber, and the air and the uncoated paint mist in the coating chamber pass through the floor discharge portion of the coating chamber. In a painting booth equipped with a plumb bob
The first side air supply unit that ejects air substantially radially from the direction substantially facing the uncoated paint mist to the direction substantially vertically downward is located at a position higher than the height of the object to be painted in the painting chamber. It is at a point provided on the side wall.

According to this configuration, air is supplied from the air supply chamber to the coating chamber substantially vertically downward through the ceiling blowout portion of the coating chamber, so that the air flow in the coating chamber is not disturbed and the coating is not applied. The paint mist can be efficiently guided to the exhaust chamber. As a result, the finished quality of the coating film on the object to be coated is maintained, and coating defects such as color cast are less likely to occur. Furthermore, even if the amount of air supplied to the painting chamber is significantly reduced, the air in the opposite direction from the first side air supply section to the uncoated paint mist scattered toward the side wall surface of the painting chamber. By supplying (countercurrent), it is possible to reduce the adhesion of the uncoated paint mist to the side wall surface.

In the painting booth according to the present invention, the ceiling blowout portion is provided in the central portion in the ceiling width direction of the painting chamber, and hanging wall portions are provided at both ends in the width direction of the ceiling blowout portion. It is preferable to have it.

As in this configuration, by providing a ceiling blowout portion in the central part in the ceiling width direction of the painting room, air from the air supply chamber is compared to the case of a conventional painting booth in which the ceiling blowout portion is provided on the entire ceiling of the painting room. While reducing the amount, it is possible to maintain the finished quality of the coating film on the object to be coated and to prevent color cast. Furthermore, by providing a hanging wall, it is possible to prevent the uniform flow of air from the ceiling blowout portion from spreading in the width direction, so that it is possible to more efficiently supply an air flow that is substantially vertically downward to the painting room. Can be done.

In the painting booth according to the present invention, it is preferable that the first side air supply unit is provided over the entire depth direction of the painting chamber.

According to this configuration, the air from the first side air supply unit is uniformly supplied over the entire depth direction of the painting chamber.

In the painting booth according to the present invention, when the painting apparatus in the coating chamber is a wall-mounted coating apparatus fixed to the side wall of the coating chamber, the first side air supply unit is a portion of the wall-mounted coating apparatus. It is preferable that it is divided by.

According to this configuration, even when the painting chamber is provided with a wall-mounted painting device fixed to the side wall of the painting room, the first side air supply unit is divided by a portion of the wall-mounted painting device. Therefore, it is possible to avoid interference between the first side air supply unit and the wall-mounted coating device.

In the painting booth according to the present invention, it is preferable that the first side air supply unit is provided with a sock filter.

As in this configuration, by using a sock filter, a uniform flow of air with a continuous wind speed distribution is formed from the direction substantially opposite to the uncoated paint mist to the direction substantially vertically downward, and the attraction of ambient air is as much as possible. It can be suppressed. Therefore, since the air in the painting chamber is not disturbed and vortices are not generated in various places, the unpainted paint mist can be more efficiently guided to the exhaust chamber to prevent painting defects from occurring. can.

In the painting booth according to the present invention, the vertical cross-sectional shape orthogonal to the longitudinal direction of the sock filter is semicircular, and the surface forming the semicircular straight line portion faces the side wall of the painting chamber. Is arranged, and it is preferable that a guide plate member extending in a direction substantially opposed to the uncoated paint mist is provided above the sock filter.

According to this configuration, since the first side air supply unit includes a sock filter having a semicircular vertical cross-sectional shape orthogonal to the longitudinal direction, air is ejected radially from the vertically upward direction to the vertically downward direction, but the sock The guide plate member provided above the filter efficiently causes the air ejected upward from the sock filter to flow in a direction substantially opposite to the uncoated paint mist. The air whose airflow direction has been changed merges with the air originally ejected from the sock filter in the horizontal direction, and has a synergistic effect as a countercurrent to the uncoated paint mist.

In the painting booth according to the present invention, it is preferable that the guide plate member is configured so that the guide direction of air can be changed.

According to this configuration, the guide plate member makes it possible to adjust the direction of the countercurrent with respect to the uncoated paint mist. This makes it possible to create a more effective countercurrent. For example, when the object to be painted is changed to a vehicle body with a low vehicle height, the guide plate member is adjusted to blow out the countercurrent to a lower level. By doing so, it is possible to more reliably reduce the adhesion of the paint to the side wall surface.

In the painting booth according to the present invention, the vertical cross-sectional shape orthogonal to the longitudinal direction of the sock filter is a quadrant, and the surface forming one of the two straight portions of the quadrant is the side wall of the coating chamber. It is preferable that the sock filter is arranged so that the surface forming the other straight line portion extends in the horizontal direction from the upper end of the straight line portion when facing the other.

As in this configuration, the size of the sock filter can be reduced by making the vertical cross-sectional shape orthogonal to the longitudinal direction of the sock filter a quarter circle, so that the cost for manufacturing and installation work can be reduced. ..

In the painting booth according to the present invention, it is preferable that an auxiliary side air supply unit that ejects air only in a direction substantially opposite to the uncoated paint mist is provided adjacent to the upper side of the sock filter. ..

Even if the kinetic energy of the countercurrent to the uncoated paint mist is insufficient only with the air from the sock filter, as in this configuration, it assists to eject air only in the direction substantially opposite to the uncoated paint mist. By providing the side air supply unit adjacent to the upper side of the sock filter having a quadrangular cross-sectional shape orthogonal to the longitudinal direction, the kinetic energy of the countercurrent can be reinforced as needed.

In the painting booth according to the present invention, a second side air supply unit that ejects air substantially radially from a direction substantially facing the uncoated paint mist to a direction substantially vertically downward is provided on the side wall of the painting chamber. The air volume of each of the first side air supply unit and the second side air supply unit is provided on the lower side of the one side air supply unit, and the air volume when the first side air supply unit is used alone. It is preferable that the setting is smaller than that of.

For example, when painting an automobile body with a high vehicle height as an object to be painted, it may be difficult to form a uniform flow to the lower part of the side wall only with the first side air supply unit. By further providing the second side air supply section on the lower side of the 1 side air supply section, a more uniform flow can be formed to the lower side of the side wall, and as a result, the paint adheres to the side wall surface. Can be prevented. Further, since the air volume of each of the first side air supply section and the second side air supply section is set to be smaller than the air volume when the first side air supply section is used alone, the side air supply section is set to be smaller. Even if the air volume is increased by one step, it is not necessary to double the air volume, and the operation can be performed with the same air volume as when the first side air supply unit is used alone.

In the painting booth according to the present invention, the density of the air supplied from the first side air supply section and / or the second side air supply section is higher than the density of the air supplied from the ceiling blowing section of the painting chamber. Is also preferable.

According to this configuration, the density of the air supplied from the first side air supply section and / or the second side air supply section is higher than the density of the air supplied from the ceiling blowout section of the painting chamber, so that the countercurrent flow The kinetic energy of the wall surface becomes larger, and the paint can be more reliably prevented from adhering to the side wall surface.

It is a front schematic block diagram of 1st Embodiment of the painting booth which concerns on this invention. It is a side schematic block diagram of the 1st Embodiment of the painting booth which concerns on this invention. It is a front schematic block diagram of the 2nd Embodiment of the painting booth which concerns on this invention. It is a side schematic block diagram of the 2nd Embodiment of the painting booth which concerns on this invention. It is a front schematic block diagram of the 3rd Embodiment of the painting booth which concerns on this invention. It is a side schematic block diagram of the 3rd Embodiment of the painting booth which concerns on this invention. It is a front schematic block diagram of the 4th Embodiment of the painting booth which concerns on this invention. It is a side schematic block diagram of the 4th Embodiment of the painting booth which concerns on this invention. It is a schematic block diagram of another embodiment of the side air supply part. It is a schematic block diagram of another embodiment of the side air supply part. It is a schematic block diagram of another embodiment of the side air supply part. It is a schematic block diagram of another embodiment of the side air supply part. It is a schematic block diagram of another embodiment of the side air supply part. It is a schematic block diagram of another embodiment of the side air supply part. It is a schematic block diagram of another embodiment of the side air supply part.

[First Embodiment]
The first embodiment of the painting booth 1 according to the present invention will be described with reference to the drawings.
In the present specification, the "width direction" means the lateral direction in front of the painting booth 1 as shown in FIG. 1, and the "depth direction" means the painting booth 1 as shown in FIG. 2, for example. It shall mean the lateral direction on the side surface (the transport direction of the object W to be painted). The white arrows in each drawing indicate the air flow.

As shown in FIGS. 1 and 2, the painting booth 1 faces substantially vertically downward through the painting chamber 2 and the ceiling blowing portion 21 of the painting chamber 2 in which the painting object W such as the body of an automobile is spray-painted. The air supply chamber 3 that supplies air into the coating chamber 2 and the air and the uncoated paint mist in the coating chamber 2 are sucked through the lattice floor 24 (an example of the floor discharge portion) of the coating chamber 2. The exhaust chamber 4 is provided.

The air supply chamber 3 is arranged directly above the painting chamber 2 and is connected to an air supply fan (not shown). The air pressurized and supplied from the air supply fan is blown into the painting chamber 2 in a laminar flow from the ceiling blowing portion 21 of the painting chamber 2 in a substantially vertical downward direction.

The ceiling blowout portion 21 is provided with a dust removing filter 22, and is configured so that the air in the air supply chamber 3 is supplied into the painting chamber 2 after being dust removed by the dust removing filter 22.

The ceiling blowout portion 21 is provided not in the entire ceiling of the painting chamber 2 but in the central portion in the width direction of the ceiling 20 over the entire depth direction. It is desirable that the width of the ceiling blowing portion 21 is set to a width of about 30% to 50% of the width of the ceiling 20.

Further, a hanging wall portion 23 extending in the entire depth direction is provided at both ends of the ceiling blowing portion 21 in the width direction. The hanging wall portion 23 can prevent the uniform flow of air from the ceiling blowing portion 21 from spreading in the width direction. As for the length of the hanging wall portion 23 in the vertical direction, the longer the length is set, the more the linearity of the air flow from the ceiling blowing portion 21 can be improved. Since the 23 itself is easily soiled, it is desirable to make the ceiling 20 to 400 mm or less in consideration of these factors.

The painting chamber 2 includes a conveyor mechanism CV that carries in and out the object W to be painted, and an articulated robot-type automatic painting device 5a having a spray gun. The conveyor mechanism CV is laid in the central portion in the width direction of the floor over the entire depth direction. For example, the automatic coating apparatus 5a is juxtaposed on the left and right sides of the floor surface of the coating chamber 2 along the conveyor mechanism CV (transportation direction of the object to be coated W).

A predetermined paint is spray-painted on the object W to be painted in a state of being carried in by the conveyor mechanism CV and stopped at a predetermined position by the automatic operation of the automatic painting device 5a based on a preset time schedule.

The floor of the painting room 2 is provided with a lattice floor 24 as a floor discharge portion, and is configured to be ventilated.

The exhaust chamber 4 is arranged directly below the painting chamber 2 and is connected to an exhaust fan (not shown). Exhaust gas including air from the coating chamber 2 and uncoated paint mist is sucked through the grid floor 24.

The exhaust chamber 4 includes a paint mist removing device (not shown) that separates and removes uncoated paint mist from the exhaust gas. As the paint mist removing device, a known paint mist removing device may be adopted regardless of whether it is a wet type that traps the paint mist in the stored washing water or a dry type that traps the paint mist in a corrugated cardboard filter or the like.

The exhaust gas sucked into the exhaust chamber 4 by the drive of the exhaust fan is discharged to the outside of the painting booth 1 after the uncoated paint mist is separated and removed by the paint mist removing device.

A first side air supply unit 6 is provided on each of the right side wall 25a and the left side wall 25b in the width direction of the coating chamber 2 over the entire depth direction of the coating chamber 2.

An air supply fan (not shown) is connected to the first side air supply unit 6. As the air supply fan, the one connected to the air supply chamber 3 may be shared, or may be configured separately. The air supply to the first side air supply unit 6 may be supplied from anywhere, such as from the side wall side of the coating chamber 2, the end side in the depth direction, or from above the first side air supply unit 6.

The first side air supply unit 6 in the present embodiment includes a sock filter 60 having a semicircular vertical cross-sectional shape orthogonal to the longitudinal direction and a guide plate member 62. The sock filter 60 is arranged so that the surface forming the semicircular straight line portion faces each of the right side wall 25a and the left side wall 25b of the painting chamber 2. The guide plate member 62 extends in the horizontal direction and is provided above the sock filter 60.

The sock filter 60 forms a uniform flow of air having a continuous wind speed distribution from a substantially horizontal direction (an example of a direction substantially facing the uncoated paint mist) to a substantially vertical downward direction, and suppresses the attraction of ambient air as much as possible. Any configuration can be obtained. In other words, the air outlet is a woven fabric, perforated plate, wire mesh, etc. with a relatively small aperture ratio and opening diameter, the blowing air velocity is uniform, and the run-up until the air outlet grows into a developed flow. It is desirable to have a configuration that produces an air flow with a short distance. Examples of the material capable of realizing such a configuration include a cloth bag using a non-woven fabric laminated with a fibrous synthetic resin, a cloth bag made of glass fiber, a metal mesh bag, a punching plate, a mesh wire mesh, and the like.

The first side air supply unit 6 is provided at a position higher than the height of the object to be painted W carried into the painting chamber 2. However, if the installation position is too high, the downdraft flowing along the side wall surface will be small, so it is desirable to install it up to a height of 800 mm from the ceiling surface of the object W to be painted, for example.

The first side air supply unit 6 is configured to eject air substantially radially from a substantially horizontal direction to a substantially vertical downward direction. Since the first side air supply unit 6 in the present embodiment includes a sock filter 60 having a semicircular vertical cross-sectional shape orthogonal to the longitudinal direction, the vertical upward direction is shown by the broken line arrow in FIG. Air is ejected radially downward from the sock filter 60, but the air ejected upward from the sock filter 60 is efficiently flowed laterally by the guide plate member 62 provided above the sock filter 60. The air whose airflow direction has been changed merges with the air originally ejected from the sock filter 60 in the horizontal direction, and has a synergistic effect as a countercurrent to the uncoated paint mist.

The distance between the sock filter 60 and the guide plate member 62 is preferably 300 mm or less, for example, because the airflow guidance effect of the guide plate member 62 is significantly reduced if the distance is too large.

The longer the guide length of the guide plate member 62 (the length from the side wall surface of the coating chamber 2 to the end of the guide plate member 62), the higher the airflow guidance effect, but the more easily it interferes with the automatic coating apparatus 5a. Since the guide plate member 62 itself is easily soiled, it is desirable to make it 400 mm or less in consideration of these.

When the painting process is performed in the painting booth 1 of the present embodiment, air is supplied from both the ceiling blowing portion 21 and the first side air supply portion 6 in the painting chamber 2. At this time, the air volume from the ceiling blowing section 21 is set to be larger than the air volume from the first side air supply section 6, and the wind speed from the ceiling blowing section 21 is higher than the wind speed from the first side air supply section 6. It is desirable to control the air volume so that it becomes smaller. For example, when the present invention is applied to a standard automobile painting booth 1 having a booth width of 4000 mm to 6000 mm and a booth length of several meters to several tens of meters, the wind speed from the ceiling blowout portion 21 is 0.05 to 0. It is desirable to set it to .15 m / sec and set the wind speed from the first side air supply unit 6 to 0.5 to 2.0 m / sec.

As the object to be painted W, for example, when a painting process is performed on an automobile body, the paint is basically sprayed in a direction perpendicular to the painted surface, but on a substantially horizontal surface to be painted such as the roof of the automobile body. There is a moment when the paint is sprayed in the horizontal direction, and by repeating such a moment, the side wall surface of the painting chamber 2 is easily soiled.

However, according to the present embodiment, the first side air supply unit 6 ejects air radially from a substantially horizontal direction to a substantially vertical downward direction, so that a continuous wind speed distribution is generated from the horizontal direction to the downward direction, and the airflow due to the difference in wind speed is generated. There is little turbulence, and an air flow that makes it difficult for unpainted paint mist to diffuse is created.

Then, since the airflow is directed toward the center of the painting chamber 2 in the width direction from each of the right side wall 25a and the left side wall 25b, it is possible to prevent the unpainted paint mist from adhering to each of the right side wall 25a and the left side wall 25b. At the same time, a downward airflow of the coating chamber 2 is formed along the respective wall surfaces of the right side wall 25a and the left side wall 25b, so that the airflow is not scattered on the right side wall 25a and / or the left side wall 25b. The paint mist can be positively directed to the exhaust chamber 4.

Further, in order to ensure the finished quality of the coating film, it is necessary to maintain the temperature and humidity of the coating film surface within a predetermined range. That is, if a constant air flow does not exist around the object W to be coated, the temperature and humidity of the surface of the coating film cannot be maintained, which may adversely affect the finish quality of the coating film.

According to the present embodiment, when the air supplied from the ceiling blowout portion 21 hits the object W to be coated, it is dispersed and flows so as to cover the entire surface thereof, so that the temperature and humidity of the coating film surface are within a predetermined range. It is maintained and the finish quality of the coating film can be maintained. Further, since there is no air colliding between the series of objects to be painted W that are continuously carried in and painted, the downdraft from the ceiling blowout portion 21 and the first side air supply portion 6 The airflow toward the center in the width direction of the coating chamber 2 merges, and the uncoated paint mist can be quickly guided to the exhaust chamber 4. Therefore, even if the air volume of the air supplied from the ceiling blowing portion 21 is reduced, color fog is less likely to occur in the series of objects W to be painted.

According to the painting booth 1 to which the present invention is applied, a standard automobile-only painting booth 1 having a booth width of 5500 mm and a wind speed of air from the ceiling blowing portion 21 of the painting room 2 of 0.3 m / sec. The air volume can be reduced by 30% to 70% as compared with the case of.

Next, an embodiment in the case where the painting booth 1 according to the present invention is provided with the wall-mounted painting robot 5b as the automatic painting device 5a will be described below. Although these embodiments will be described with reference to the drawings, the same configurations as those of the first embodiment will be described with the same reference numerals and the description thereof will be omitted, and different configurations will be mainly described.

[Second Embodiment]
As shown in FIGS. 3 and 4, the painting chamber 2 of the painting booth 1 according to the present embodiment includes a fixed wall-mounted painting robot 5b as an automatic painting device 5a. In the present embodiment, the first side air is located at a position higher than the height of the object to be painted W carried into the painting chamber 2 and below the robot body 50 fixed to each of the right side wall 25a and the left side wall 25b. A supply unit 6 is provided.

Further, the length of the sock filter 60 of the first side air supply unit 6 and the guide plate member 62 in the width direction is determined from the distance between the spray unit 51 of the wall-mounted coating robot 5b and the wall surfaces of the right side wall 25a and the left side wall 25b. Is also set to be shorter.

That is, the first side air supply unit 6 is configured so as not to interfere with either the robot main body 50 of the wall-mounted coating robot 5b or the spray unit 51.

[Third Embodiment]
As shown in FIGS. 5 and 6, in the present embodiment, the painting chamber 2 of the painting booth 1 is provided with the fixed wall-mounted painting robot 5b as the automatic painting device 5a as in the second embodiment described above. The installation position is low, and if the first side air supply unit 6 is to be provided as in the first and second embodiments described above, it will interfere with the robot body 50 of the wall-mounted coating robot 5b. A configuration to avoid this is shown.

In the present embodiment, the first side air supply unit 6 is provided in a state of being divided by the portion of the wall-mounted coating robot 5b. The divided portion 6b of the first side air supply portion 6 is provided directly below the robot main body 50. The length of the sock filter 60 and the guide plate member 62 of the divided portion 6b in the width direction is shorter than the distance between the spray portion 51 of the wall-mounted coating robot 5b and the respective wall surfaces of the right side wall 25a and the left side wall 25b. Is set to.

The sock filter 60 of the divided portion 6b is connected to the sock filter 60 of the first side air supply unit 6 via a connecting duct 64, whereby air is supplied to the sock filter 60 of the divided portion 6b.

It is desirable that the divided portion 6b is provided at a height equal to or higher than the height of the object to be painted W carried into the painting chamber 2.

[Fourth Embodiment]
As shown in FIGS. 7 and 8, the painting chamber 2 in the present embodiment includes a mobile wall-mounted painting robot 5b as an automatic painting device 5a.

The wall-mounted coating robot 5b in the present embodiment is configured to be movable along a rail R laid on the side wall, and the rail R is provided over the entire depth direction of the coating chamber 2.

In the present embodiment, the first side air supply unit 6 is provided at a position higher than the height of the object to be painted W carried into the painting chamber 2 and below the rail R and the robot body 50 that moves the rail R. Has been done.

Further, the length of the sock filter 60 of the first side air supply unit 6 and the guide plate member 62 in the width direction is determined from the distance between the spray unit 51 of the wall-mounted coating robot 5b and the wall surfaces of the right side wall 25a and the left side wall 25b. Is also set to a short length.

That is, the first side air supply unit 6 is configured so as not to interfere with either the rail R, the robot body 50 of the wall-mounted coating robot 5b, or the spray unit 51.

(Other embodiments)
1. 1. The first side air supply unit 6 in the above-described embodiment employs a sock filter 60 having a semicircular vertical cross-sectional shape orthogonal to the longitudinal direction, but the sock filter 60 is not limited to this, and other examples thereof include. The vertical cross-sectional shape orthogonal to the longitudinal direction may be a polygonal shape close to an arc, or, for example, a shape having only one corner as shown in FIG. 12 or a corner as shown in FIG. The shape may be linear so that the air is not present, and is not particularly limited as long as the air can be ejected substantially radially from the direction substantially facing the uncoated paint mist to the direction substantially vertically downward.

2. 2. As shown in FIG. 9, as the sock filter 60 of the first side air supply unit 6, a sock filter 60 having a vertical cross-sectional shape orthogonal to the longitudinal direction thereof may be used. In this case, when the surface forming one of the two straight sections of the quadrant is made to face the right side wall 25a of the painting chamber, the surface forming the other straight portion from the upper end of the one straight portion is in the horizontal direction. The sock filter 60 is arranged so as to extend to. Also in this case, similarly to the above-described embodiment, the guide plate member 62 extending in the horizontal direction is provided above the sock filter 60. Although FIG. 9 shows a configuration in which the first side air supply unit 6 is provided on the right side wall 25a of the painting chamber, the first side air supply unit 6 is similarly provided on the left side wall 25b of the painting chamber. It may be provided.

3. 3. As shown in FIG. 10, in the sock filter 60 having a quadrangular cross-sectional shape orthogonal to the longitudinal direction, the material of the horizontal surface portion 61 is changed so that air is not injected from the horizontal surface portion 61. May be. Although FIG. 10 shows a configuration in which the first side air supply unit 6 is provided on the right side wall 25a of the painting chamber, the first side air supply unit 6 is similarly provided on the left side wall 25b of the painting chamber. It may be provided.

4. As shown in FIG. 11, in a sock filter 60 having a quadrangular cross-sectional shape orthogonal to the longitudinal direction, an auxiliary side air supply unit 63 that ejects air only in a substantially horizontal direction is adjacent to the upper side of the sock filter 60. It may be a configuration provided in the above. Although FIG. 11 shows a configuration in which the first side air supply unit 6 is provided on the right side wall 25a of the painting chamber, the first side air supply unit 6 is similarly provided on the left side wall 25b of the painting chamber. It may be provided.

5. Although not shown, a second side air supply unit that ejects air substantially radially from a substantially horizontal direction to a substantially vertical downward direction is provided below the first side air supply unit on each of the right side wall and the left side wall of the painting chamber. The air volume of each of the first side air supply unit and the second side air supply unit may be set smaller than the air volume when the first side air supply unit is used alone. .. The second side air supply unit may include, for example, a sock filter and a guide plate member, similarly to the first side air supply unit. At this time, by making the wind speeds of the air in the first side air supply section and the second side air supply section the same and reducing the sock filter diameter, each of the first side air supply section and the second side air supply section. The air volume may be reduced. Further, it is desirable that the second side air supply unit is installed at a height of about half of the height from the floor surface of the painting room to the first side air supply unit.

6. The density of the air supplied from the first side air supply unit and / or the second side air supply unit may be higher than the density of the air supplied from the ceiling blowing portion of the painting chamber.

7. In the above-described embodiment, the guide plate member 62 extending in the horizontal direction is exemplified, but the guide plate member is not limited to the configuration, and as shown in FIGS. 14 and 15, for example, the guide plate member However, it may be configured so that the guide direction of the air can be changed. The guide plate member 62 shown in FIG. 14 is configured so that the tip portion thereof can be tilted downward from the horizontal, and the tilt angle θ thereof is, for example, 0 ° (horizontal) to about 30 °. Further, the guide plate member 62 shown in FIG. 15 is configured so that the entire guide plate member 62 can be inclined from the horizontal to either upward or downward, and the inclination angle θ thereof is 0 ° in both the upper and lower cases. (Horizontal) ~ about 30 °. According to this configuration, the direction substantially facing the uncoated paint mist can be changed not only in the horizontal direction but also slightly below or above the horizontal direction, so that a more effective countercurrent can be created. It will be like.

8. In the above-described embodiment, the configuration in which the first side air supply unit and the second side air supply unit are provided with a sock filter is shown, but the configuration is not limited to this. As an alternative to the sock filter, another known material such as a punching member may be used, as long as it is a material capable of ejecting air substantially radially from a direction substantially facing the uncoated paint mist to a direction substantially vertically downward. , Is not particularly limited.

Although the present invention has been described with reference to the drawings as described above, the present invention is not limited to the configuration of the drawings, and may be carried out in various embodiments without departing from the gist of the present invention. Needless to say, you can do it.

The painting booth of the present invention can be particularly suitably used in the technical field of painting the entire body or various parts constituting the entire body in, for example, an automobile, a railroad vehicle, an aircraft, a ship, and the like.

1 Painting booth 2 Painting room 20 Ceiling 21 Ceiling blowout part 22 Dust removal filter 23 Hanging wall part 24 Lattice floor (example of floor discharge part)
25a Right side wall 25b Left side wall 3 Air supply room 4 Exhaust room 5a Automatic painting device 5b Wall-mounted painting robot 50 Robot body 51 Spray part 6 First side air supply part 60 Sock filter 61 Horizontal part 62 Guide plate member 6b Divided part 63 Auxiliary Side air supply unit 64 Connection duct W Painting object CV Conveyor mechanism R Rail

Claims (11)

A painting room where spray painting is performed on the object to be painted,
The air supply chamber that supplies air to the coating chamber substantially vertically downward through the ceiling blowout portion of the coating chamber, and the air and the uncoated paint mist in the coating chamber pass through the floor discharge portion of the coating chamber. In a painting booth equipped with a plumb bob
The first side air supply unit that ejects air substantially radially from the direction substantially facing the uncoated paint mist to the direction substantially vertically downward is located at a position higher than the height of the object to be painted in the painting chamber. Ri Oh provided in the side wall,
A painting booth characterized in that the ceiling blowout portion is provided in a central portion in the ceiling width direction of the painting chamber, and hanging wall portions are provided at both ends in the width direction of the ceiling blowout portion. The coating booth according to claim 1 , wherein the entire first side air supply unit is provided at a position higher than the height of the object to be coated. The painting booth according to claim 1 or 2, wherein the first side air supply unit is provided over the entire depth direction of the painting chamber. A painting room where spray painting is performed on the object to be painted,
An air supply chamber that supplies air to the coating chamber substantially vertically downward through the ceiling blowout portion of the coating chamber, and
In a painting booth provided with an exhaust chamber for sucking air and uncoated paint mist in the painting chamber through a floor discharge portion of the painting chamber.
The first side air supply unit that ejects air substantially radially from the direction substantially facing the uncoated paint mist to the direction substantially vertically downward is located at a position higher than the height of the object to be painted in the painting chamber. It is provided on the side wall,
The first side air supply unit is provided over the entire depth direction of the painting chamber .
When the painting apparatus in the coating chamber is a wall-mounted coating apparatus fixed to the side wall of the coating chamber, the first side air supply unit is characterized by being divided by a portion of the wall-mounted coating apparatus. painting booth you. The coating booth according to any one of claims 1 to 4, wherein the first side air supply unit includes a sock filter. A painting room where spray painting is performed on the object to be painted,
An air supply chamber that supplies air to the coating chamber substantially vertically downward through the ceiling blowout portion of the coating chamber, and
In a painting booth provided with an exhaust chamber for sucking air and uncoated paint mist in the painting chamber through a floor discharge portion of the painting chamber.
The first side air supply unit that ejects air substantially radially from the direction substantially facing the uncoated paint mist to the direction substantially vertically downward is located at a position higher than the height of the object to be painted in the painting chamber. It is provided on the side wall,
The first side air supply unit includes a sock filter.
The vertical cross-sectional shape orthogonal to the longitudinal direction of the sock filter is semi-circular, and the sock filter is arranged so that the surface forming the semi-circular straight line portion faces the side wall of the coating chamber, and the unpainted surface is formed. guide plate member extending in a direction substantially opposite to Chakutoryo mist, painting booth characterized in that provided above the sock filter. The painting booth according to claim 6, wherein the guide plate member is configured so that the guide direction of the air can be changed. A painting room where spray painting is performed on the object to be painted,
An air supply chamber that supplies air to the coating chamber substantially vertically downward through the ceiling blowout portion of the coating chamber, and
In a painting booth provided with an exhaust chamber for sucking air and uncoated paint mist in the painting chamber through a floor discharge portion of the painting chamber.
The first side air supply unit that ejects air substantially radially from the direction substantially facing the uncoated paint mist to the direction substantially vertically downward is located at a position higher than the height of the object to be painted in the painting chamber. It is provided on the side wall,
The first side air supply unit includes a sock filter.
When the vertical cross-sectional shape orthogonal to the longitudinal direction of the sock filter is a quadrant, and the surface forming one of the two straight portions of the quadrant is made to face the side wall of the coating chamber, the one from the upper end of the linear portion, as a surface constituting the other of the linear portion extending in the horizontal direction, painting booth you characterized in that the sock filter is disposed. The coating booth according to claim 8, wherein an auxiliary side air supply unit that ejects air only in a direction substantially opposite to the uncoated paint mist is provided adjacent to the upper side of the sock filter. .. On the side wall of the coating chamber, a second side air supply unit that ejects air substantially radially from a direction substantially facing the uncoated paint mist to a substantially vertical downward direction is located below the first side air supply unit. The air volume of each of the first side air supply unit and the second side air supply unit is set to be smaller than the air volume when the first side air supply unit is used alone. The painting booth according to any one of claims 1 to 9, wherein the painting booth is characterized by. Claim 1 is characterized in that the density of air supplied from the first side air supply unit and / or the second side air supply unit is higher than the density of air supplied from the ceiling blowout unit of the painting chamber. The painting booth described in any one of 10 to 10.

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