JPH01210068A - Object temperature control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a painting booth equipped with a conveying device for sequentially transporting objects to be coated to a painting work area equipped with a spray painting device.

[Conventional technology]

Conventionally, in a painting booth, the painting work area is air-conditioned to a temperature suitable for painting, and the temperature of the spray paint is adjusted to improve the adhesion of the spray paint to the object to be painted. Some are designed to improve quality.

[Problem to be solved by the invention] However, even if the painting work area is air-conditioned or the temperature of the spray paint is adjusted, the temperature of the object to be coated itself brought into the painting work area is uncertain (painting (determined by the ambient temperature outside the booth), and the temperature of the paint sprayed onto the object to be coated varies greatly depending on the temperature of the object itself, making it impossible to obtain the desired coating state. was there.

However, if the object to be painted is carried into the painting work area and left in the air-conditioned painting work area until the temperature reaches the predetermined temperature, then spray painting is applied. As a result, the efficiency of continuous painting, in which paints are carried one by one to the painting work area and sprayed one after another, is greatly reduced.

An object of the present invention is to enable a good coating state to be obtained in spray coating in a coating work area while maintaining high continuous coating efficiency.

[Means to solve the problem]

The characteristic configuration of the painting booth according to the present invention is that the painting booth is equipped with a conveyance device that sequentially transports the objects to be coated to a painting work area equipped with a spray coating device, and the objects to be coated are adjusted to a predetermined temperature suitable for painting prior to painting. A temperature control area equipped with temperature control means to
The reason is that it is installed on the path for bringing the objects to be coated into the painting work area, and its functions and effects are as follows.

[For production]

That is, during the process of transporting the objects to the painting work area, the objects to be coated are adjusted to a predetermined temperature suitable for painting by the temperature control means within the temperature control area, and are sequentially transported to the painting work area by the conveyance device, and
While the temperature of the subsequent object to be coated is being controlled in the temperature control area,
In the painting work area, the objects to be coated, which have been brought in through the temperature control area and have a suitable temperature for painting, are sequentially spray-painted.

〔Effect of the invention〕

As a result, since the spray coating is applied to the object to be coated at a temperature that is adjusted to suit the coating, it is possible to reliably obtain the desired good coating condition. Since the temperature of the objects is adjusted to a suitable temperature for painting during the transport process, it is possible to maintain high efficiency in continuous painting, in which the objects to be coated are brought in one by one using a conveyor and painted one after another, and high-quality spray painting can be performed efficiently.
Now it can be implemented.

In addition, when paint is sprayed onto an object whose temperature has been adjusted to a temperature suitable for painting during the delivery process, the temperature of the applied paint immediately shifts to the temperature suitable for painting. There is an advantage that temperature control and air conditioning in the painting work area can be omitted or lowered.

〔Example〕

Next, an example will be described.

Figures 1 and 2 show a painting booth, in which (1) the objects to be painted (A) are sequentially carried into the painting work area (2) at predetermined intervals, and the object to be painted (A) (3) is an automatic spray coating device that spray-paints the carried-in object (A) to be coated.

The conveyor (1) and the automatic spraying device (3) are controlled in a predetermined manner by the central controller, so that the object to be coated (A) is transported within the coating work area (2). The automatic painting device (3) automatically paints the parts one by one.

The ceiling of the painting work area (2) is equipped with a ceiling outlet (5) that blows out air whose temperature and humidity have been adjusted by the air conditioner (4) in a downward laminar flow.
), and below the painting work area (2), there is a grate floor (6) for disposing of excess spray paint mist and fallen paint slag discharged from the painting work area (2) together with the air through the grid floor (6). A treatment device (7) is provided, and this air circulation quickly removes excess spray paint mist from the painting work area (2) to prevent color cast on other objects to be painted.
The inside of the painting work area (2) is kept at a temperature and humidity suitable for spray painting.

The automatic spray painting device (3) is supplied with paint from a paint tank (8) and pressurized air for paint spraying from an air supply source (9), but the paint tank (8) does not contain stored paint. It is equipped with a temperature controller (8a) that adjusts and maintains the temperature suitable for painting, and the supply path for pressurized air for paint spraying is equipped with a temperature controller (8a) that adjusts and maintains the temperature suitable for painting. A temperature regulator (10) is installed to pre-regulate the temperature of the supplied air so as to prevent the temperature from significantly changing from the temperature suitable for painting.

On the other hand, as shown in Figures 1 and 3, the painting work area (2
), there is a tunnel-shaped temperature control area (11) in which the object to be coated (A) is adjusted to a predetermined temperature suitable for painting prior to spray painting in the painting work area (2). The casing (12) is formed to surround the conveyor conveyance path of the objects to be coated (A), and the objects to be coated (A) to be sequentially transported to the painting work area (2) pass through this temperature control area (11). By sequentially adjusting the temperature to be suitable for painting in advance during the process, in combination with the aforementioned painting work area air conditioning, paint temperature control, and air temperature control, extremely good coating can be achieved in spray painting in the painting work area (2). This is so that you can get the correct condition.

The temperature control configuration for controlling the temperature of the object to be coated (A) to a temperature suitable for coating in the temperature control area (11) includes a condition in which the conveyor transport route of the object to be coated (A) is surrounded in a tunnel-shaped casing (12). The air supply chamber (13) of the casing (1
A temperature-controlled area air conditioner (14) is provided to supply air at a predetermined temperature to the air supply chamber (13).
), the air conditioner (14) is connected to the inner wall (15) that partitions the air supply chamber (13)'.
A large number of nozzles (16) are used to spray the temperature-controlled air supplied to 13) onto the passing object (A) so that the temperature-controlled air is evenly blown onto the entire passing object (A). They are distributed and attached.

In the figure, (17) is an air passage that returns the temperature-controlled air blown from the nozzle (16) to the temperature-controlled area (11) to the air device (14).
Further, (1B), (19), and (20) are a heater, a cooler, and a filter respectively installed in the air conditioner (I4).

In addition, a nozzle (16
), the blowing direction and blowing amount can be adjusted, and each nozzle (1
By adjusting the blowing direction and blowing amount in step 6), the temperature of the object (A) to be coated is uniformly adjusted over the entire surface.

Examples by C] Next, another example will be listed.

(b) As a temperature control means for adjusting the temperature of the object to be coated to a predetermined temperature suitable for painting in the temperature control area, in addition to the nozzle device that blows temperature-controlled air onto the object to be coated as in the above embodiment, Temperature control devices of various types can be applied, such as providing a porous outlet that blows air out dispersedly within a control area, or providing a radiant device that controls the temperature of the object to be coated by radiation.

(0) The temperature of the object to be coated in the temperature control area can be determined appropriately depending on the type of paint, etc., and the temperature of the object to be coated in the temperature control area can be controlled by heating or cooling. It may be either.

(c) The air conditioning temperature in the painting work area, the paint temperature control temperature, and the temperature control temperature of the object to be coated in the temperature control area may be different from each other. Each key may be omitted.

(d) The casing structure forming the temperature control area can be improved in various ways, and the painting work area and the temperature control area may be provided in the same casing.

(*) The object to be coated by the painting booth according to the present invention may be any object such as an automobile body, a cage jig for a home appliance, a material before product processing, etc.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a sectional view taken along line n-■ in FIG. 1, and FIG.
The figure is a sectional view taken along the line ■-■ in FIG. (1)...Transfer device, (2)...Painting work area, (3)...Spray coating device, (11)...
...Temperature control area, (16) ...Nozzle, (A
)......Object to be coated.

Claims (1)

[Claims] 1. A painting booth equipped with a conveying device (1) for sequentially transporting objects to be coated (A) to a painting work area (2) equipped with a spray painting device (3), A temperature control area (11
) is provided in the painting work area (2) on the path for transporting objects to be painted. 2. The coating booth according to claim 1, wherein the temperature regulating means is a group of nozzles (16) that spray temperature regulating air onto the object to be coated (A). 3. The coating booth according to claim 1, wherein the temperature control means is a radiant device that controls the temperature of the object (A) to be coated by radiation.