JP4537185B2 - Painting system - Google Patents

Description

  The present invention relates to a painting system for painting a car body of an automobile, and more particularly to a painting system for controlling the flow of uncoated paint by an air curtain.

  In general, when an automobile is painted, the paint is sprayed in the form of a mist by spraying (hereinafter referred to as “spray painting”). In performing this spray coating, it is known that an overspray, which is an uncoated paint, is emitted from the spray and is not sprayed on the body to be coated. If the uncoated paint is left as it is, it causes environmental pollution as industrial waste. In addition, from the viewpoint of effective use of resources, it is desirable to efficiently collect and reuse.

  As a means of collecting unpainted paint, a wall is provided near the object to be coated, and a so-called water curtain is formed by flowing water or fluid hydrocarbons on the surface. After the unpainted paint is collected by the water curtain, A method of performing a predetermined process and reusing it has been proposed (see Patent Document 1, Patent Document 2 and Patent Document 3).

  According to this method, a large amount of water is required to collect the uncoated paint, which increases the cost. In addition, since a large amount of water is used, the scale of the facility for separating the paint from the water is increased, which further increases the cost of treatment. In addition, when fluidized hydrocarbons are used to collect uncoated paint, the cost is further increased compared to the case of using water, and fluidized hydrocarbons may adversely affect the environment.

  Therefore, a UF (Ultra Filtration) film or MF (Micro Filtration) film, which is a collecting material, is installed near the object to be coated, or a MF film, which is a collecting material, A method has been proposed in which a filter or a wet dust collector is placed behind the UF membrane film to collect uncoated paint and then collected, and then passed through these films to collect and reuse the paint ( (See Patent Document 4).

  However, depending on such a method, it is difficult to separately arrange a collecting material or the like in relation to a device for spraying paint on the vehicle body or other devices in the painting process of the vehicle body of an automobile because of space.

Therefore, a method has been proposed in which an uncoated paint is sent to a circulating water tank by blowing an airflow from above the object to be coated and reused through a predetermined process (see Patent Document 5).
JP 49-051324 A JP 09-001014 A JP 2003-047895 A JP 09-066256 A JP 2003-144993 A

  However, simply spraying the airflow will cause turbulence of the airflow due to the airflow being applied to the object to be painted or the paint spray, and the uncoated spray will be scattered, contaminating the environment surrounding the painting process, and surrounding workers, etc. There is also the risk of harming your health. Moreover, since the scattered uncoated paint adheres to surrounding devices and wall surfaces, it becomes difficult to reuse the resources, making it impossible to effectively use resources.

  Accordingly, in order to solve the above-described problem, a coating system according to claim 1 is provided with a coating device for spraying paint on the body of an automobile, and a vehicle body that is an object to be coated. Unpainted paint collection tray for collecting paint that has not been applied to the car body of the paint, uncoated paint collection tray moving means, and compressed air is ejected to form an air curtain And an air curtain forming means for dropping the paint sprayed from the coating device onto the uncoated paint collecting tray, a compressed air supply means for supplying compressed air to the air curtain forming means, and the air curtain forming means And an air curtain forming device side controller for controlling the supply amount from the compressed air supply means to the air curtain forming means. And Ten forming apparatus, characterized in that it comprises an air curtain moving means for moving said air curtain forming apparatus.

  According to the first aspect of the present invention, the uncoated paint can be dropped onto the uncoated paint collection tray without being scattered around.

  In addition, according to the first aspect of the present invention, it is not necessary to use a large amount of water in collecting the uncoated paint.

  The painting system according to claim 2 is a painting device for spraying paint on a body of an automobile, a painting carriage on which the automobile body is mounted, and a body of the automobile from the painting device attachable to the painting carriage. A plurality of uncoated paint collection trays comprising a flat bottom plate for collecting paint that has not been applied to the vehicle body of the automobile, and side walls provided at end portions of the bottom plate; An air curtain forming means for jetting compressed air to form an air curtain and dropping paint sprayed from the coating apparatus onto the plurality of uncoated paint collecting trays; and compressed air to the air curtain forming means Compressed air supply means to be supplied, the direction of the ejection holes of the air curtain forming means, and the supply amount from the compressed air supply means to the air curtain forming means. An air curtain forming apparatus having the curtain forming apparatus side control unit, characterized in that it comprises a an air curtain moving means for moving said air curtain forming apparatus.

  According to the second aspect of the present invention, since the automobile body is not mounted on the uncoated paint collection tray, the uncoated paint collection tray can be easily attached and detached.

  According to a third aspect of the present invention, in the coating system according to the first or second aspect, the air curtain forming device side control unit controls the air curtain moving means of the air curtain forming device, and The movement of the air curtain forming apparatus is interlocked with the movement of the uncoated paint collection tray.

  According to invention of Claim 3, an air curtain formation apparatus can be moved according to the movement of the tray for uncoated paint collection | recovery.

  Invention of Claim 4 is the coating system as described in any one of Claims 1-3. WHEREIN: The said air curtain formation apparatus side control part is the said air curtain formation means, the said compressed air supply means, By controlling the air curtain moving means, the air curtain is formed so that the unpainted paint is dropped on the unpainted paint collection tray without being scattered around according to the movement of the unpainted paint collection tray. It is characterized by performing.

  According to the fourth aspect of the present invention, the air curtain can be formed so that the uncoated paint is not scattered around the uncoated paint in accordance with the movement of the uncoated paint collecting tray.

  According to a fifth aspect of the present invention, in the coating system according to any one of the first to fourth aspects, the uncoated paint collection tray is provided at a flat bottom plate and an end of the bottom plate. The side wall is provided with an uncoated paint collecting tray side cleaning water supply pipe at the peripheral edge of the side wall, and the cleaning water supply pipe is opened toward the bottom plate. A nozzle is provided.

  According to the fifth aspect of the present invention, the uncoated paint dropped on the uncoated paint collection tray can be washed away from the uncoated paint collection tray by water or a cleaning liquid sprayed from the cleaning nozzle. .

  According to a sixth aspect of the present invention, in the coating system according to any one of the first to fifth aspects, the joint between the bottom plate and the side wall of the uncoated paint collection tray is formed in an arc shape. It is characterized by being.

  According to invention of Claim 6, since the junction part of the baseplate and side wall of the tray for uncoated paint collection | recovery is formed in circular arc shape, it collect | recovered compared with the case where a border part is bent. The paint is less likely to remain in the unpainted paint collection tray.

  The invention according to claim 7 is the coating system according to any one of claims 1 to 6, wherein the bottom plate of the uncoated paint collection tray is provided with a paint discharge port, and An inclination is provided toward the paint discharge port, and a paint recovery pipe can be connected to the paint discharge port.

  According to the seventh aspect of the present invention, since the bottom plate is inclined to the paint discharge port, the water or cleaning liquid in which the paint is dissolved easily flows from the paint discharge port to the paint recovery pipe.

According to an eighth aspect of the present invention, in the coating system according to the seventh aspect , the paint recovery pipe is provided for each color of the paint to be applied, and each time the color of the paint to be applied is changed. The paint is replaced with a paint recovery pipe.

  According to the eighth aspect of the present invention, the paint collection pipe is replaced for each color to be painted, so that the possibility that the collected paints of different colors are mixed is reduced.

According to a ninth aspect of the present invention, in the coating system according to the seventh or eighth aspect , the paint recovery pipe is cleaned every time the color of the paint to be painted is changed.

  According to the ninth aspect of the present invention, since the paint discharge pipe is washed every time the color to be painted is changed, the possibility that the collected paints of different colors are mixed is reduced.

  According to a tenth aspect of the present invention, in the coating system according to any one of the first to ninth aspects, the unpainted paint collection tray is provided for each color of paint to be painted. Each time the color of the paint to be painted is changed, it is replaced with a corresponding unpainted paint collection tray.

  According to the tenth aspect of the present invention, since the uncoated paint collection tray is replaced every time the color of the automobile body is changed, the possibility that the collected paints of different colors are mixed is reduced.

  According to an eleventh aspect of the present invention, in the coating system according to any one of the first to ninth aspects, the uncoated paint collection tray is washed each time the color of the paint to be painted is changed. It is characterized by that.

  According to the eleventh aspect of the present invention, the unpainted paint collection tray is washed every time the color of the automobile body is changed, so that the possibility that the collected paints of different colors are mixed is reduced. .

  According to the first aspect of the present invention, since the air curtain is used instead of the water curtain, the amount of water used for collecting the unpainted paint is greatly reduced, so that the cost of the water used is greatly reduced. be able to.

  According to the invention described in claim 1, since the amount of water used for collecting unpainted paint is greatly reduced by using the air curtain instead of the water curtain, the collected paint is reused. Since the scale of the unpainted paint reuse facility, which is a facility for doing so, can be reduced, the reduced equipment for the painting process can be effectively used to perform other operations.

  According to the invention described in claim 1, it is not necessary to introduce an expensive facility with a large scale by reducing the scale of an unpainted paint reuse facility, and the amount of water to be processed is reduced. So running costs can be reduced.

  According to the invention described in claim 2, since the unpainted paint collecting tray can be divided, the uncoated paint is collected regardless of whether the body of the automobile is mounted on the unpainted paint collecting tray. Since the uncoated paint collection tray from which the paint has been collected can be attached and detached, the operation can be performed quickly.

  According to the third aspect of the present invention, the air curtain can be moved in accordance with the movement of the unpainted paint collection tray, and the unpainted paint collection tray is always located inside the air curtain. Is possible.

  According to the fourth aspect of the present invention, the air curtain is formed so as not to disturb the airflow in accordance with the movement of the tray for collecting the unpainted paint. Compared with the case of blowing off, it is possible to reliably drop the uncoated paint on the uncoated paint collection tray while preventing the uncoated paint from scattering around.

  According to the fifth aspect of the present invention, since almost all of the paint recovered by the water sprayed from the cleaning nozzle or the cleaning liquid can be washed away from the uncoated paint collection tray, almost all of the uncoated paint is collected. Can be reused by guiding it to the facility for collecting unpainted paint.

  According to the sixth aspect of the present invention, since the joint between the bottom plate and the side wall of the unpainted paint collection tray is formed in an arc shape, it is compared with the case where the joint is formed to be bent. As a result, the collected paint is unlikely to remain in the joint portion, so that almost all the collected paint can be guided to the uncoated paint reuse facility without remaining in the uncoated paint collection tray.

  Further, according to the invention described in claim 6, since the joint between the bottom plate and the side wall is formed in an arc shape, the paint is unlikely to remain in the joint when water or cleaning liquid is sprayed. The collection tray can be more reliably cleaned.

  According to the seventh aspect of the invention, since the bottom plate is inclined to the paint discharge port, the collected paint can easily flow to the paint discharge port, and the paint can be easily discharged from the uncoated paint collection tray. It becomes.

  According to the eighth aspect of the invention, every time the color to be painted is changed, the color is changed to a paint collecting pipe corresponding to the paint of the color. Reduces the cost of reusing the collected paint because there is less risk of mixing the paint when the color is collected and there is no need to provide a process for separating paints with different colors when reused. be able to.

  According to the ninth aspect of the invention, since the paint collection pipe corresponding to the paint of the color is washed every time the color to be painted is changed, the color of the paint to be painted is different even in the front and rear vehicle bodies. There is less risk of color paints being mixed, and it is not necessary to provide a step of separating paints of different colors when reusing, so that the cost for reusing the recovered paint can be reduced.

  According to the invention described in claim 10, each time the color to be painted is changed, it is replaced with an unpainted paint collection tray corresponding to the paint of that color. However, there is less risk of the collected paint being mixed, and it is not necessary to provide a process for separating paints of different colors when reused, so the cost for reusing the collected paint can be reduced. .

  According to the eleventh aspect of the invention, every time the color to be painted is changed, the unpainted paint collection tray corresponding to the paint of that color is washed. However, there is less risk of the collected paint being mixed, and it is not necessary to provide a process for separating paints of different colors when reused, so the cost for reusing the collected paint can be reduced. .

 [First embodiment]

  Hereinafter, embodiments of a coating apparatus according to the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

  FIG. 1 is a perspective view showing a coating system 1 according to the present embodiment. The coating system 1 is used for forwarding a painting device 2 for painting a car body of a car, a tray place 25 (described later) provided in the middle of the painting device 2, and a non-coating paint reuse facility 30. The rail 3, an unpainted paint collection tray 4 that moves on the forwarding rail 3, and an air curtain forming device 5 provided above the unpainted paint collection tray 4.

  For example, as shown in FIG. 1, the coating apparatus 2 includes coating guns 6 and 6, and the coating guns 6 and 6 are attached to support columns 9 and 9.

  An unpainted paint collection tray for collecting unpainted paint that has not been applied to the vehicle body of the automobile, which is the object to be painted, of the paint sprayed from the paint guns 6 and 6 on the upper surface of the forwarding rail 3 4 is slidably provided. Wheels and motors (not shown) are provided below the unpainted paint collection tray 4 so as to be moved on the forwarding rail 3. In the present embodiment, the uncoated paint collection tray moving means is configured in this way, but the uncoated paint collection tray moving means is not limited to this.

  As shown in FIG. 2, the unpainted paint collection tray 4 includes a bottom plate 10 and a side wall 11 provided at an end of the bottom plate 10, and collects an uncoated paint by the bottom plate 10 and the side wall 11. A concave portion is formed. The recess for collecting the unpainted paint in the unpainted paint collection tray 4, that is, the volume that can accommodate the unpainted paint is that the collected unpainted paint overflows from the unpainted paint collection tray. In order to prevent it, it is comprised so that it may become larger than the volume of the uncoated paint which can generate | occur | produce.

  The volume of the unpainted paint collection tray 4 that can accommodate the unpainted paint is not particularly limited as long as it is larger than the volume of the unpainted paint that can be generated, but the volume of the unpainted paint that can be generated is 100%. In this case, it is desirable that the volume is not less than 100 percent and not more than 200 percent.

  A paint discharge port 12 for discharging the collected uncoated paint is provided at a substantially central portion of the bottom plate 10. The paint discharge port 12 is provided with a shutter 13 that can be freely opened and closed.

  The shutter 13 is opened only when a later-described paint recovery pipe 35 is connected to the paint discharge port 12.

  The unpainted paint collection tray 4 is mounted with a car body 14 of an automobile, which is an object to be coated, by a car body conveying means (not shown).

  As shown in FIG. 2, an uncoated paint collection tray-side cleaning water supply pipe 15 (hereinafter referred to as “tray-side cleaning water supply pipe 15”) is provided on the peripheral edge of the side wall 11 of the uncoated paint collection tray 4. Is provided.

  FIG. 3 is a view showing a part of the uncoated paint collection tray 4 shown in FIG. 3, the tray-side cleaning water supply pipe 15 is provided with cleaning nozzles 16, 16... Opened toward the bottom plate 10, and the cleaning nozzles 16, 16. Is opened in the direction of the bottom plate 10. The central axis of the cleaning nozzles 16, 16... Is inclined at about 30 ° C. from the vertically downward direction to the side wall 11 side when the uncoated paint collection tray 4 is placed on a flat surface. It is preferably located between the angles.

  Moreover, as shown in FIG. 3, the junction part of the baseplate 10 and the side wall 11 is formed in circular arc shape. The radius of the arc formed at the joint is preferably 100 mm or less.

  The tray-side cleaning water supply pipe 15 is provided with an openable and closable cleaning water supply port (not shown), and is opened only when a tank-side cleaning water supply pipe 36 described later is connected.

  An air curtain forming device 5 for forming an air curtain is disposed above the coating device 2.

  As shown in FIG. 4, the air curtain forming device 5 includes an air curtain forming means 20 for injecting compressed air to form an air curtain, and a compressed air supplying means for supplying compressed air to the air curtain forming means 20. 21, an air curtain moving device 22 for moving the air curtain forming device, an air curtain forming device 20, a compressed air supply device 21 and an air curtain moving device 22 for controlling the driving of the air curtain moving device 22 are provided.

  As shown in FIG. 1, the air curtain forming means 20 is formed by a plurality of compressed air jet nozzles 24, 24... Having openings in the direction of the uncoated paint collection tray 4, for example.

  As shown in FIG. 1, the compressed air jet nozzles 24, 24,... Have, for example, a cylindrical shape, and are provided with openings 24a, 24a,. Yes. The vicinity of the central portion in the longitudinal direction of the compressed air injection nozzles 24, 24... Is freely bendable, and is bent in accordance with the control of the air curtain forming device side control unit 23, and is provided at the tip portion. The direction of 24a, 24a ... is variable. The number of compressed air jet nozzles 24, 24... Is not limited.

  The compressed air supply means 21 incorporates, for example, an electric motor provided with air blowing blades, and compressed air is supplied to the air curtain forming means 20 by driving the electric motor.

  The air curtain moving means 22 can move slidably on, for example, an air curtain forming device side rail provided on a ceiling (not shown) attached in parallel to the forwarding rail 3 and the air curtain forming device side rail. It is comprised by the latching part which is not shown in the figure attached to the air curtain formation apparatus 5 which has a possible drive mechanism.

  The air curtain moving means 22 is placed at an optimal position so that the uncoated paint out of the paint sprayed from the coating apparatus 2 is not scattered around and is dropped and collected by the uncoated paint collection tray 4. The air curtain forming device 5 can be moved so that the air curtain can be formed.

  The air curtain forming device side control unit 23 controls the driving of the air curtain forming means 20, the compressed air supply means 21 and the air curtain moving means 22 to prevent the unpainted paint from scattering to the surroundings. It is made to fall to the paint collection tray 4.

  Further, the air curtain forming device side control unit 23 prevents the unpainted paint from being scattered around and forms the air curtain so that the unpainted paint collecting tray 4 collects the air curtain. Compressed air is injected from the forming means 20 onto the vehicle body that is the object to be coated, and the compressed air of the air curtain forming means 20 is moved along with the movement of the uncoated paint collection tray 4 on which the vehicle body that is the object to be coated is mounted. The vicinity of the center part in the longitudinal direction of the injection nozzles 24, 24... Is bent to change the direction of the tip part.

  In addition, the air curtain forming device side control unit 23 prevents the unpainted paint from being scattered around and forms the air curtain so as to be collected in the unpainted paint collection tray 4. As the vehicle body moves, the compressed air supply means 21 is controlled to change the amount of compressed air supplied to the air curtain forming means 20.

  In addition, the air curtain forming device side control unit 23 prevents the unpainted paint from being scattered around and forms the air curtain so as to be collected in the unpainted paint collection tray 4. The air curtain forming device 5 is moved by controlling the air curtain moving means 22 in accordance with the movement of the unpainted paint collecting tray 4 on which the vehicle body as the object is mounted.

  In addition, the air curtain forming device side control unit 23 reflects the compressed air collided when the compressed air injected from the compressed air injection nozzles 24, 24. It collides with the compressed air jetted from the jet nozzles 24, 24... To disturb the air flow and the unpainted paint is scattered around, or the unpainted paint is collected in the unpainted paint collection tray 4. Since the air does not fall, the direction of each of the compressed air injection nozzles 24, 24... Of the air curtain forming means 20 and the amount of air supplied from the compressed air supply means 21 to each compressed air injection nozzle are determined. By adjusting, the air flow is not disturbed to prevent the uncoated paint from scattering to the surroundings, and control is performed so that the uncoated paint is dropped onto the tray 4 for collecting the uncoated paint.

  As shown in FIG. 5, a tray place 25 for the unpainted paint collection tray 4 is provided at a position before the painting process of the forwarding rail 3 is started. The number of unpainted paint collection trays 4 may be provided in accordance with the type of color to be painted, and the unpainted paint collection tray 4 according to the color to be painted may be delivered from the forwarding rail.

  An uncoated paint reuse facility 30 is provided on the side of the end close to the position after the painting process of the forwarding rail 3 is completed.

  Further, as shown in FIG. 5, the unpainted paint reuse facility 30 is stored in the tank 31 and the tank 31 for collecting the collected paint and water for washing the unpainted paint collection tray described later, for example. A concentrator 32 for concentrating the contents and a concentration adjuster 33 for adjusting the concentration of the paint concentrated in the concentrator 32 are provided. The tank 31 and the concentrator 32 and the concentrator 32 and the concentration adjuster 33 are connected by pipes 34 and 34, respectively.

  The tank 31 is provided with a paint collection pipe 35 for collecting the paint collected by the unpainted paint collection tray 4, and one end of the paint collection pipe 35 is provided in the uncoated paint collection tray 4. It is connected to the paint discharge port 12. Each time the color of the paint used for painting is changed, the paint collection pipe 35 is replaced with a paint collection pipe 35 corresponding to the color.

  The paint collecting pipe 35 is not replaced every time the color of the paint used for painting is changed, but after the cleaning that removes the dirt of the previously guided paint such as flush cleaning is performed. It may be used for collecting a paint having a color different from that of the paint used in the above.

  The concentrator 32 performs, for example, ultrafiltration so that the content collected from the uncoated paint collection tray 4 is concentrated to a desired concentration.

  The concentration adjuster 33 purifies a paint having a desired concentration by mixing new paint supplied from an external supply source (not shown) and water and the concentrated liquid separated by the concentrator 32.

  The unpainted paint reuse facility 30 includes a cleaning water supply tank (not shown). The cleaning water supply tank includes a tank-side cleaning water supply pipe 36, and tank-side cleaning water. The supply pipe 36 is connected to a cleaning water supply port provided in the unpainted paint collection tray 4 so as to supply cleaning water.

  It is assumed that there are as many unpainted paint reuse facilities 30 as the number of paints used for painting.

  Next, the operation of the first embodiment will be described.

  The unpainted paint collection tray 4 placed on the tray place 25 moves on the forwarding rail 3 and the vehicle body 14 of the automobile, which is the object to be coated, is mounted.

  When the unpainted paint collection tray 4 is transported to a predetermined position, the paint is sprayed from the painting guns 6 and 6 provided in the coating apparatus 2 to start painting.

  At the same time as the coating is started, air is injected from the compressed air injection nozzles 24, 24... Provided in the air curtain forming device 5 to form an air curtain.

  The air curtain forming device 5 controls the air curtain forming means 20 and the compressed air supply means 21 while moving the air curtain by moving the air curtain moving means 22 according to the movement of the uncoated paint collection tray 4. Thus, the air curtain is formed so that the uncoated paint does not scatter around and falls onto the uncoated paint collection tray 4.

  When the work in the painting process is finished, the painting device 2 and the air curtain forming device 5 stop, and when the unpainted paint collection tray 4 that collects the unpainted paint moves to a predetermined position, the painted vehicle body 14 is It is unloaded from the unpainted paint collection tray 4 and conveyed to the next step.

  On the other hand, the unpainted paint collection tray 4 is conveyed to the unpainted paint reuse facility 30 by the forwarding rail 3. Therefore, the paint collection pipe 35 provided in the tank 31 is connected to the paint discharge port 12 provided in the uncoated paint collection tray 4.

  Thereafter, when the tank-side cleaning water supply pipe 36 is connected to the tray-side cleaning water supply pipe 15 and the cleaning water is supplied, water is jetted from the cleaning nozzles 16, 16. The paint collected in the tray 4 is caused to flow from the paint discharge port 12 to the tank 31. Then, after the concentration is adjusted by the concentrator 32 and the concentration adjuster 33, the uncoated paint is in a state where it can be used again as a paint.

  As described above, according to the present embodiment, the use of an air curtain instead of a water curtain greatly reduces the amount of water used for collecting unpainted paint. Since the scale of the unpainted paint reuse facility, which is a facility for doing so, can be reduced, the reduced equipment for the painting process can be effectively used to perform other operations.

  Further, according to the present embodiment, it is not necessary to introduce a large-scale expensive facility by reducing the scale of an unpainted paint reuse facility, and the amount of water to be processed is reduced, so that the running cost is reduced. Can be lowered.

Further, according to the present embodiment, the air curtain is formed so as not to disturb the airflow in accordance with the movement of the unpainted paint collection tray 4, so that the uncoated paint is simply generated by the airflow. Compared with the case of blowing off, it is possible to reliably drop the uncoated paint onto the uncoated paint collection tray while preventing the uncoated paint from scattering around.
[Second Embodiment]

  Next, the coating system 40 concerning 2nd embodiment concerning this invention is demonstrated. However, in the following, description will be made with a focus on the parts that differ in configuration from the first embodiment, and description of the same configuration as in the first embodiment will be omitted. In addition, unpainted paint collection trays 41 and 42, which will be described later, are symmetric, and an unpainted paint reuse facility 30 is provided in each of the unpainted paint collection trays 41 and 42. Therefore, only the unpainted paint collection tray 41 side is shown, and the description of the unpainted paint reuse facility 30 on the unpainted paint collection tray 42 side is omitted.

  FIG. 6 is a schematic perspective view of the coating system 40 and the unpainted paint reuse facility 30 in which the air curtain forming apparatus 5 according to the second embodiment of the present invention is omitted. In the second embodiment, it is assumed that the number of uncoated paint reuse facilities 30 is the same as the number of paints used for painting.

  A painting carriage guide rail 43 is laid between the columns 9 and 9. In addition, a transport rail 44 for transporting the unpainted paint collection tray 41 is attached to an unpainted paint collection tray 41 on a coating carriage 46 described later, and can be transported to the unpainted paint reuse facility 30. Are laid like so.

  A tray place 45 is provided on the side of the end portion close to the position before the painting process of the forwarding rail 44 starts, and the tray place 45 is provided for each color to which the uncoated paint collection tray 41 is painted. Is provided. Further, an unpainted paint reuse facility 30 is provided on the end side close to the position after the painting process of the forwarding rail 44 is completed.

  In addition, it is good also as using it for collect | recovering the coating materials of a different color from the collect | recovered coating materials after wash | cleaning the tray 41 for uncoated coating materials which collect | recovered coating materials.

  A painting carriage 46 that moves along the painting carriage guide rail 43 is disposed above the painting carriage guide rail 43. The car body of the automobile, which is the object to be coated, is mounted on the painting carriage 46 and uncoated paint collection trays 41 and 42 are attached.

  As shown in FIG. 7, the coating carriage 46 is composed of a pedestal 49 and wheels 50, 50... Rotatably attached to both ends of two axles (not shown) supported in parallel on the lower surface side of the pedestal 49. Has been. Further, four support columns 51, 51... Are attached to the upper surface side of the base 49, and the support columns 51, 51.

  As shown in FIG. 8, the uncoated paint collection tray 41 is provided with a bottom plate 53. On one side surface of the bottom plate 53 in the longitudinal direction, there are formed two recesses into which the columns 51, 51. A side wall 54 is provided at the end of the bottom plate 53, and a storage space for collecting uncoated paint is formed by the bottom plate 53 and the side wall 54.

  Similar to the uncoated paint collection tray used in the first embodiment, a tray-side cleaning water supply pipe 55 is provided at the peripheral edge of the side wall 54 of the uncoated paint collection tray 41. The cleaning water supply pipe 55 is provided with a plurality of cleaning nozzles 16, 16... Opened toward the bottom plate 53. And the junction part of the baseplate 53 and the side wall 54 is formed in circular arc shape similarly to the tray 41 for uncoated paint collection | recovery which concerns on 1st embodiment.

  The bottom plate 53 is provided with a paint discharge port (not shown) for discharging the uncoated paint collected in the same manner as the bottom plate 53 in the first embodiment. There is no restriction on the position where the paint discharge port is opened. The paint discharge port is provided with a shutter (not shown) that can be freely opened and closed.

  The shutter is opened only when the unpainted paint collection tray 41 is conveyed to the unpainted paint reuse facility 30 and the paint discharge port is connected to the paint collection pipe 35 after the painting is completed.

  In addition, on the coating carriage guide rail 43, a forwarding rail 44 for forwarding the unpainted paint collection tray 41 is laid with both ends thereof connected to the painting carriage guide rail. One end of the forwarding rail 44 is connected and laid at a position before the painting process of the coating carriage guide rail 43 is started, and the other end of the forwarding rail 44 is installed in the painting process of the painting carriage guide rail 43. Is connected and laid at the position after the end.

  A tray place 45 for the uncoated paint collection tray 41 is provided on the end side close to the position before the painting process of the forwarding rail 44 is started. As many unpainted paint collection trays 41 as the number of colors to be painted are provided, and the unpainted paint collection trays according to the colors to be painted are delivered to the forwarding rail 44. Yes.

  The uncoated paint collection trays 41 and 42 may be used for all colors after cleaning without providing the uncoated paint collection trays 41 and 42 for each color to be painted.

  As shown in FIG. 9, after the concave portions of the unpainted paint collection trays 41 and 42 are fitted into the columns 51, 51... It is mounted on the top of the support columns 51, 51...

  Next, the operation of the second embodiment will be described.

  Before the painting process is started, the uncoated paint collection trays 41 and 42 are transported to the coating carriage 46 from the tray places 45 and 45 by the forwarding rails 44 and 44, respectively, and are attached to the coating carriage 46, respectively. A car body 14 of the automobile is mounted on a painting carriage 46.

  The painting carriage 46 on which the automobile body 14 is mounted then moves along the painting carriage guide rail 43 and is painted by the painting apparatus 2 as in the first embodiment. The uncoated paint is collected in the uncoated paint collection trays 41 and 42 without being scattered around by the formed air curtain.

  When the work in the painting process is finished, the painting device 2 and the air curtain forming device 5 are stopped, and when the painting carriage 46 moves to a predetermined position, the painted vehicle body 14 is lowered from the painting carriage 46 and the next It is conveyed to the process.

  On the other hand, the unpainted paint collection trays 41 and 42 are respectively removed from the coating carriage 46, moved on the forwarding rail 44, and conveyed to the unpainted paint reuse facilities 30 and 30 for the first implementation. After the same treatment as that of the form is performed, the uncoated paint becomes a state where it can be used again as a paint.

  As described above, according to the present embodiment, since the unpainted paint collection tray can be divided, the vehicle body of the automobile is not mounted regardless of whether or not the uncoated paint collection tray is mounted. Since the uncoated paint collection tray from which the coated paint has been collected can be attached and detached, the operation can be performed quickly.

It is a schematic perspective view of the coating system which concerns on 1st embodiment. It is a schematic perspective view of an uncoated paint collection tray. It is a figure showing a part of tray for uncoated paint collection. It is a functional block diagram of an air curtain forming apparatus. It is a schematic perspective view which shows the coating system which concerns on 1st embodiment, and an unpainted paint reuse facility. It is a schematic perspective view which shows the coating system which concerns on 2nd embodiment, and an unpainted paint reuse facility. It is a schematic perspective view of the trolley | bogie for coating concerning 2nd embodiment. It is a schematic perspective view of the unpainted paint collection | recovery tray which concerns on 2nd embodiment. It is a schematic perspective view which inserted the recessed part of the tray for uncoated paint collection to the support | pillar of the coating trolley which concerns on 2nd embodiment. It is the figure which mounted the vehicle body of the motor vehicle which is a to-be-painted object to the trolley | bogie for coating which concerns on 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coating system 2 Coating apparatus 3 Feed rail 4 Uncoated paint collection tray 5 Air curtain forming device 10 Bottom plate 11 Side wall 20 Air curtain forming means 21 Compressed air supply means 22 Air curtain moving means 23 Air curtain forming apparatus side control unit 24 Compressed air injection nozzle 40 Coating system 41 Uncoated paint collection tray 42 Uncoated paint collection tray 43 Coating carriage guide rail 44 Forwarding rail 46 Painting carriage 52 Bottom plate 53 Side wall

Claims (11)

A painting device that sprays paint on the car body;
An unpainted paint collection tray for collecting a paint that is mounted on the body of the object and that is not applied to the body of the automobile among the paint sprayed from the painting apparatus onto the automobile body;
Tray transfer means for collecting unpainted paint;
Air curtain forming means for blowing compressed air to form an air curtain and dropping paint sprayed from the coating apparatus onto the uncoated paint collection tray, and compression for supplying compressed air to the air curtain forming means An air curtain forming apparatus comprising: an air supply means; and a direction of the ejection hole of the air curtain forming means and an air curtain forming apparatus side control unit for controlling a supply amount from the compressed air supply means to the air curtain forming means;
An air curtain moving means for moving the air curtain forming device;
A coating system characterized by comprising: A painting device that sprays paint on the car body;
A painting carriage on which the vehicle body is mounted;
A flat bottom plate for collecting paint that has not been applied to the car body of the automobile from the paint apparatus that can be attached to the car for painting, and an end of the bottom board. A plurality of uncoated paint collection trays comprising provided side walls;
Compressed air is blown to form an air curtain, and at the same time, air curtain forming means for dropping paint sprayed from the coating apparatus onto the plurality of uncoated paint collecting trays, and compressed air is supplied to the air curtain forming means An air curtain forming apparatus comprising: a compressed air supplying means for controlling the direction of the ejection hole of the air curtain forming means and an air curtain forming apparatus side control unit for controlling a supply amount from the compressed air supplying means to the air curtain forming means. When,
An air curtain moving means for moving the air curtain forming device;
A coating system characterized by comprising:   The air curtain forming device side control unit controls the air curtain moving means of the air curtain forming device to interlock the movement of the air curtain forming device with the movement of the uncoated paint collection tray. The coating system according to claim 1 or 2.   The air curtain forming device side control unit controls the air curtain forming means, the compressed air supply means, and the air curtain moving means so that the uncoated paint is surrounded by the movement of the uncoated paint collection tray. The coating system according to any one of claims 1 to 3, wherein an air curtain is formed so as to drop onto the uncoated paint collection tray without being scattered.   The uncoated paint collection tray is composed of a flat bottom plate and a side wall provided at an end of the bottom plate, and an uncoated paint collection tray side cleaning water supply pipe is provided on the peripheral edge of the side wall. 5. The coating according to claim 1, wherein the cleaning water supply pipe is provided with a cleaning nozzle that opens toward the bottom plate. 6. system.   The coating system according to any one of claims 1 to 5, wherein a joint between the bottom plate and the side wall of the uncoated paint collection tray is formed in an arc shape.   The bottom plate of the unpainted paint collection tray is provided with a paint discharge port, and is inclined toward the paint discharge port, and a paint collection pipe is connected to the paint discharge port. The coating system according to any one of claims 1 to 6, wherein: According to claim 7, characterized in that the paint-collecting pipe is replaced with paint collection piping corresponding to each color of the paint is changed to paint with the are provided for each color of paint to be coated Painting system. The coating system according to claim 7 or 8 , wherein the paint recovery pipe is cleaned every time the color of the paint to be applied is changed.   The unpainted paint collection tray is provided for each color of paint to be painted, and is replaced with a corresponding unpainted paint collection tray each time the color of the paint to be painted is changed. The coating system according to any one of claims 1 to 9.   The coating system according to any one of claims 1 to 9, wherein the uncoated paint collection tray is washed every time the color of the paint to be applied is changed.

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