JPS61200871A - Painting booth - Google Patents

Abstract

PURPOSE:To rapidly discharge mist by preventing the discharge of excessive spray mist to the side of a painting apparatus in a suspended state, by partioning a spray painting work region into a painting article arranging region and a painting apparatus arranging region respectively receiving the supply of ventilation air from blow-out ports by an air curtain. CONSTITUTION:A spray painting work region 1 is partitioned into a painting article arranging region 1A receiving the supply of ventilation air from a central blow-out port 5 and painting apparatus arranging regions 1B receiving the supply of ventilation air from side part blow-out ports 6 by vertical walls 15 and air curtains F from ventilation air blow-out nozzles 16. Therefore, the excessive sprayed paint mist generated in the painting article arranging region 1A is not discharged to the painting apparatus sides in a suspended state and collectively exhausted to a first exhaust port 17. Because only exhaust air high in mist concn. is supplied to the first and second paint mist removing apparatuses 7, 9 from the painting article arranging region 1A, the treating air amount of the apparatus can be reduced and air exhausted from the painting apparatus arranging regions 1B can be returned to be utilized.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a booth for spray painting automobile bodies, casings of home appliances, etc. Painting equipped with an air outlet that supplies air to the spray painting work area, and a paint mist removal device that removes paint mist contained in the exhaust gas from the work area and discharges the mist-removed gas to the outside of the system. Regarding the booth.

[Conventional technology]

Conventionally, in the above-mentioned painting booth, in order to prevent surplus spray paint mist generated during spray painting from adhering to the painting equipment installed in the spray painting work area, the ventilation gas outlet for the spray painting work area is closed to the painting equipment. The blowout speed of the blowout part corresponding to the installation area is set lower than that of the blowout part corresponding to the installation area of the object to be painted, which is the area where paint mist is generated, or the exhaust port connected to the paint mist removal device is sprayed. When exhausting the work area, the exhaust port was placed on the floor of the area where the workpiece was installed. (For example, see Japanese Patent Application Laid-Open No. 59-156457 and Japanese Patent Application No. 59-75450.) [Problems to be Solved by the Invention] However, with the above-mentioned conventional means, a coating device is not available in order to facilitate cleaning and maintenance. The initial purpose is to prevent paint mist from adhering to the paint, and as a purpose that is inextricably linked to this purpose, it is necessary to sequentially replace objects with different paint colors in the spray painting work area to prevent paint mist from adhering to the previous object. Each of the objectives of eliminating paint mist in the area as quickly as possible in order to be able to perform the process efficiently without color transfer was achieved to some extent, but since the achievement of these objectives is extremely meaningful from an industrial perspective. It has been desired to be able to more effectively prevent the adhesion of paint mist and speed up the removal of paint mist.

Moreover, in the past, from the viewpoint of eliminating paint mist as quickly as possible, as mentioned above, the entire amount of temperature-controlled ventilation gas blown into the spray painting work area was temporarily removed through the exhaust port and paint mist removal device. Since it is being discharged outside, an air conditioner that processes the supplied ventilation gas with warm WIN processing needs to be large in terms of temperature control capacity, and a paint mist removal device also needs to be large in terms of processing air volume. This not only increases the size of the overall device configuration, but also increases operating costs and equipment costs.

The purpose of the present invention is to make it possible to effectively and quickly remove surplus spray paint mist from the area where it is generated, where it is installed, to the area where the painting equipment is installed, with almost no mist drifting out. Furthermore, the improved configuration itself can be used more effectively to reduce the required temperature control capacity of the air conditioner and the required capacity of the paint mist removal device in terms of processing air volume.

[Means for solving problems]

The characteristic configuration of the painting booth according to the present invention is that a nozzle is provided to form an airflow curtain so as to divide the spray painting work area into an object installation area and a painting equipment installation area, each of which receives ventilation gas from an air outlet; Exhaust ports are provided on the floor of the work area to separately vent the object to be coated, the coating bag, and the mounting plate to remove paint mist contained in the exhaust gas. an exhaust passage for supplying gas from the exhaust port to the painting object installation area to the paint mist removal device that discharges the paint mist removal device to the outside of the system; The reason is that a return air path is provided to supply gas from the mouth, and its functions and effects are as follows.

[For production]

In other words, by dividing the spray painting work area into the workpiece installation area and the coating equipment installation area, each of which receives ventilation gas from the air outlet, the speed of ventilation gas blowing out to both installation areas can be simply controlled. make them different from each other, or
Compared to simply placing an exhaust port that exhausts the spray painting work area on the floor of the area where the workpiece is installed, it is possible to prevent excess spray paint mist generated in the area where the workpiece is installed from reaching the area where the painting equipment is installed. Drifting can be more reliably prevented, and by reliably preventing drift, the exhaust port can be used to intensively exhaust the entire surplus sprayed paint mist. Therefore, it is possible to prevent paint mist from adhering to the coating equipment and quickly remove the paint mist more effectively than before.

In addition, the exhaust gas from the spray painting work area still has a large amount of temperature control heat, and by adopting the above-mentioned partition structure, the ventilation gas from the painting equipment installation area can be kept at a high level of cleanliness. In order to ensure that the gas is discharged while maintaining the same level of gas, we installed separate exhaust ports for both installation areas, and created an exhaust path to direct the gas from the exhaust ports to the workpiece installation area. By separately supplying gas from the exhaust port for the paint mist removal device through the paint mist removal device and the air outlet for the painting equipment installation area through the return air path, the gas is supplied to the spray painting work area as before. Compared to temporarily discharging the entire temperature-controlled ventilation gas out of the system through the paint mist removal device, the required capacity of the paint mist removal device in terms of processing air volume can be greatly reduced. To greatly reduce the required temperature control capacity of an air conditioner without causing any inconvenience in terms of cleanliness by reducing and utilizing the exhaust gas from the painting equipment installation area, which has high cleanliness and a large amount of temperature control heat. I can do it.

Furthermore, since the two installation areas are separated by an airflow curtain, there is no hindrance to the coating operation of the coating device.

〔Effect of the invention〕

As a result of the above, compared to conventional booths, cleaning maintenance for adhering paint mist can be made easier, and objects to be coated with different paint colors can be replaced more efficiently without color transfer. Especially in continuous painting work on a painting line, these two points have made it possible to greatly improve the painting processing capacity on a monthly or annual basis.

Moreover, since the air conditioner and paint mist removal device need only be small, the overall equipment configuration can be made compact and installation ease in paint factories, etc. can be improved, and equipment costs and operating costs (especially heat source costs) can be reduced. was able to be significantly reduced.

〔Example〕

Next, an embodiment of the present invention will be described based on FIGS. 1 and 2.

On the floor of the room-shaped spray painting work area (1), a conveyor (2) for passing the object to be coated (A) through the area is arranged and extended at the left and right center of the work area (1), Also on the floor,
A plurality of one-hand robot-type automatic coating devices (3) are installed side by side in the extending direction of the conveyor (2) on both the left and right sides of the work area (1).

Temperature-controlled ventilation air is then blown out in a downward laminar flow through the filter (4) to the left and right center portion of the ceiling of the work area (1) located above the passage path of the object to be coated (A). A central air outlet (5) is provided, and side air outlets (6) for blowing temperature-controlled ventilation air downward are provided on both left and right portions of the ceiling located above the painting equipment installation location, respectively. First and second paint mist removal devices (7) that supplement and remove paint mist contained in the exhaust air from the work area (1) with cleaning water (-) and discharge only the air from which the paint mist has been removed to the outside of the system.
) and (8) are installed in series to form a painting booth.

In the figure, (9) is an air conditioner that controls the temperature of fresh outside air taken in as supply ventilation air, (10) is an air supply fan, (11) is an air supply duct, and (12) is an air supply to the central outlet (5). The chamber (13) is an air supply chamber for the side outlet (6), and (14) is an exhaust fan.

A hanging wall (15) is provided at each boundary position between the central air outlet (5) and both measuring section air outlet (6) to extend in the conveyance direction of the object to be coated, and each of these hanging walls (15) is A ventilation air blowing nozzle (I6) is attached to the lower end to form a downward airflow curtain (F) that continues in the conveying direction of the object to be coated.
The hanging wall (15) and the airflow curtain (F) separate the spray painting work area (1) from the object installation area (1A) which receives ventilation air from the central outlet (5) and the side outlet. (6
) Painting equipment installation area (1B) that receives ventilation air supply from
It is divided into two parts.

A first exhaust port (17) in the form of a plurality of slits that acts to exhaust the object to be coated (LA) is provided in the floor directly below the position of the object to be coated during spray painting, and ,
Second exhaust ports (18) are provided on both left and right sides of the floor section, and the downward exhaust passages (Il
i) The first exhaust port (17) is connected to the first paint mist removing device (7), and the second paint mist removing device (7) is connected to the first paint mist removing device (7) through the first exhaust port (17). The second exhaust ports (18) are connected to the mist removal device (8), and each of the second exhaust ports (18) is connected to the air outlet (5) through the air duct (R) and the dry filter (19) installed therein. .

The suction side of the air supply fan (10) for (6) is connected to the discharge duct (9A) from the air conditioner (9) in a merged manner.

In other words, by separating both installation areas (1A) and (1B) with an airflow curtain (F), excess spray paint mist generated in the object installation area (1A) is transferred to the coating equipment installation area (1B).
The first exhaust port (17) is designed to effectively prevent paint mist from adhering to the main body of the coating device (3) by preventing the mist from drifting out. This allows rapid removal of the paint mist to be achieved more effectively by intensively exhausting the entire paint mist.

In addition, the first and second paint mist removal devices (7) remove only the exhaust gas with high concentration of paint mist t from the installation area of the object to be painted (1A).
, (8), the paint mist removal devices (7) and (8) can be downsized in terms of processing air volume, and furthermore, the highly clean exhaust air from the painting equipment installation area (1B) can be supplied to Air is passed through the luck duct (R) to the outlet (
5) and (6), the required capacity of the air conditioner (9) can be reduced by making effective use of the temperature control heat that the exhaust air from the painting equipment installation area (1B) still has. It's Nishide.

(Another example) Next, another embodiment will be described based on FIG.

A ceiling outlet (5) blows out temperature-controlled ventilation gas in a downward laminar flow from almost the entire surface of the ceiling of the spray painting work area (1).
A horizontal outlet (6) is provided on both side walls of the working area (1) to blow out temperature-controlled ventilation gas sideways toward the installation location of the object to be coated (^). and the object to be painted (^)
An automatic painting device (3) is installed between the installation location and the installation location.

Then, an airflow curtain (F) directed diagonally downward from the upper edge of the side outlet (6) toward the installation location of the object to be coated (A) is continuous in the conveyance direction of the object to be coated at a position higher than the main body of the coating device. Nozzles (16) are provided on the left and right sides, and the airflow curtains (F) allow the spray painting work area (1) to be
The space is divided into a coating equipment installation area (1A) that receives ventilation gas from the ceiling outlet (5) and a painting equipment installation area (1B) that receives ventilation gas from the side outlet (6). The first floor exhaust port (1
7) is directly connected to the first paint mist removal device (7), and on the other hand, the second floor exhaust port (18) is arranged so as to act as an exhaust gas to the coating device installation area (1B). A fresh gas intake duct (91
It is connected to 1) in a confluence.

In the figure (19'') is a device that removes paint mist when it is mixed into the gas by applying the gas from the painting equipment installation area (1B) to the collision plate.

Note that the reference numerals in FIG. 3 correspond to the devices and the like in the embodiment described using FIGS. 1 and 2.

[Other alternative embodiments]

Next, other examples will be listed.

The installation area for the object to be coated (1) divided by the airflow curtain (F)
The specific arrangement and structure of each of the air outlets (5) and (6) that blow out and supply temperature-controlled ventilation gas to A) and the coating equipment installation area (1B) can be changed in various ways. It is possible.

The specific structure of the nozzle (16) forming the partitioning airflow curtain (F) can be improved in various ways, and the direction of the airflow can also be changed to a curved surface instead of a flat airflow curtain (F). Both installation areas (LA) are formed into a refracting surface shape.
It can be changed as appropriate depending on the case where (1B) is to be partitioned.

In order to reduce and supply the gas from the exhaust port (18) to the air outlet (5) and (6) for the painting equipment installation area (1B), the specific contact point Vt of the return air path (R) for the reduction supply is as follows. , air outlet (5) for both installation areas (LA) and (1B)
, directly connected to one or both of (6), connected to the suction side of the air supply fan (10), or connected to the suction side of the air conditioner (9), etc.
Various positions are possible.

Further, if necessary, it is possible to interpose a booster fan or various gas purification devices such as a filter or a deodorizing device in the return air path (R).

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a plan view. FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention. (1)...Spray painting work area, (1A)...
...Object installation area, (1B)...Painting equipment installation area, (5), (6)...Air outlet, (7)
, (8)...Paint mist removal device, (9)・
... Air conditioner, (16) ... Nozzle, (1
7) , (1B)...'...exhaust port, (F)...
...Airflow curtain, (E) ...Exhaust path, (
R)...Return airway.

Claims (1)

[Claims] Air outlets (5) and (6) that supply ventilation gas whose temperature is controlled by the air conditioner (9) to the spray painting work area (1).
, and a paint booth equipped with paint mist removal devices (7) and (8) that remove paint mist contained in the exhaust gas from the work area (1) and discharge the mist-removed gas to the outside of the system. and the working area (1) is connected to the air outlet (5).
), (6) where the installation area of the workpiece is supplied with ventilation gas (
A nozzle (16) that forms an airflow curtain (F) is provided to separate the painting equipment installation area (1A) and the painting equipment installation area (1B), and the work area (1) is installed on the floor of the work area (1). Exhaust ports (17) and (18) are provided which act to exhaust gas separately from the painting device installation area (1B) and the painting equipment installation area (1B), and the gas from the exhaust port (17) is provided to the painting device installation area (1A). An exhaust path (
E) and the gas from the exhaust port (18) to the painting equipment installation area (1B) is transferred to the air outlet (5), (6).
A painting booth equipped with a return air path (R) that supplies air to the area.