JP3052011B2 - Setting booth - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a setting booth which is provided between a coating booth and a drying oven, and in which the coating applied to an object to be coated in the coating booth is naturally dried before baking in the drying furnace. About.

[0002]

2. Description of the Related Art As shown in FIG.
In the painting process of the body parts as described above, the bumper B is mounted on the conveyor truck 01 and the painting booth 0
2. The coating process is performed while sequentially passing through the setting booth 03 and the drying furnace 04. Painting booth 02
In the coating room 05, paint is sprayed on the bumper B using a painting robot, and the unpainted paint floating in the inside of the painting booth 02 flows into the collection chamber 07 together with the airflow flowing down from the upper supply duct 06. Collected by the collected water. Subsequently, the bumper B is carried into the setting booth 03, where the paint applied on the surface is naturally dried to uniformly evaporate the solvent in the paint, and then is carried into the drying furnace 04, where the paint is heated by the heated air. A printing process is performed. The unpainted paint that could not be completely removed floats in the coating room 05, and the heated air of the drying furnace 04 contains dust, so the unpainted paint and dust flow into the setting booth 03. Between the painting booth 02 and the setting booth 03 in order to prevent
An air curtain is formed between the setting booth 03 and the drying furnace 04 by the air jetted from the nozzle 08.

[0003]

However, even if air curtains are provided at the entrance and exit of the setting booth 03 as described above, intrusion of unpainted paint from the painting booth 02 and dust from the drying furnace 04 may occur. However, it is difficult to completely prevent the unpainted paint and dust from adhering to the undried coating film of the bumper B, thereby deteriorating the coating quality.

The present invention has been made in view of the above circumstances, and has as its object to prevent uncoated paint and dust from adhering to a coating film on an object to be coated in a setting booth to improve coating quality. And

[0005]

In order to achieve the above object, the present invention is provided between a painting booth and a drying oven,
In a setting booth in which the paint applied to the object to be coated in the coating booth is naturally dried before baking treatment in the drying furnace, a setting chamber through which a purified airflow flows through a filter and a lower portion of the setting chamber And a collecting chamber for removing uncoated paint and the like contained in the airflow. The setting chamber is provided with a deflecting member having a perforated plate formed in a mountain shape so as to cover an upper portion of an object to be coated. In addition, the collection chamber is provided with an inclined water guide plate through which collected water circulated by a water supply pump is guided.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention. FIG. 1 is a side view of a coating processing apparatus, and FIG. 2 is a view 2-2 of FIG.
FIG. 3 is a sectional view taken along line 3-3 of FIG.

The coating processing apparatus includes a coating booth 1, a setting booth 2, and a drying furnace 3 connected in series.
A conveyor 5 for mounting and transporting a bumper B of an automobile, which is an object to be coated, is provided on a central upper surface of a floor 4 constituting the floor. The conveyor 5 includes a carriage 9 that travels while being guided by wheels 8 on four guide rails 7 laid on the upper surface of a base 6, and a bumper B is supported by a support member 10 provided above the carriage 9. The motor 1 disposed inside the base 6
The truck 9 is connected to the endless chain 12 driven by 1 and runs along the guide rail 7.

As apparent from FIG. 2, the coating booth 1 is formed in a tunnel shape by an upper wall 13, a lower wall 14, and left and right side walls 15, and an upper part thereof is vertically partitioned by a punching metal 16 and a filter 17. A dynamic pressure chamber 18 is defined between the upper wall 13 and the punching metal 16, and a static pressure chamber 19 is defined between the punching metal 16 and the filter 17. In addition, a coating chamber 20 is defined between the filter 17 and the saw 4, and a collection chamber 21 is defined between the saw 4 and the lower wall 14.

A supply duct 22 extending from a blower (not shown) is connected to the upper wall 13 of the painting booth 1, and air supplied from the supply duct 22 to the dynamic pressure chamber 18 passes through the punching metal 16 and smoothly flows downward. The air is rectified into a uniform airflow and supplied to the static pressure chamber 19, and further passes through the filter 17 to become a clean airflow from which dust is removed, and is supplied to the coating chamber 20.

On a base 23 located on both sides of the conveyor 5 in the coating room 20, a plurality of coating robots 25 having a spray gun 24 are arranged.

A pair of water supply tanks 26 provided along the left and right side walls 15 of the collection chamber 21 are provided with water guide plates 27 inclined forward and downward toward the center of the collection chamber 21, respectively. A gap is formed between the opposite ends of the plate 27, where the collected water falls. The bottom of the collection chamber 21 and the water supply tank 26 are connected by a water supply pipe 30 provided with a water supply pump 28 and a filter 29, and collected water collected at the bottom of the collection chamber 21 is supplied by the water supply pump 28. It returns to the water supply tank 26.

As apparent from FIG. 3, the internal structure of the setting booth 2 is similar to the internal structure of the painting booth 1 described above, and includes an upper wall 13, a lower wall 14, and left and right side walls 1.
5 is provided between the upper wall 13 to which the supply duct 22 is connected and the punching metal 16.
Is a static pressure chamber 1 between the punching metal 16 and the filter 17.
9 is a setting chamber 31 between the filter 17 and the saw 4
However, a collection chamber 21 is defined between the floor 4 and the lower wall 14, respectively. A water supply tank 26, a water guide plate 27, and a water supply pump 2 are provided in the collection chamber 21 of the setting booth 2 to circulate the collected water in the same manner as the collection chamber 21 of the coating booth 1.
8, and a filter 29 are provided.

A deflection member 33 is suspended from the lower surface of the filter 17 via a plurality of columns 32 above the conveyor 5 in the setting chamber 31. The deflection member 33 is formed by bending a punching metal into a mountain shape, and is disposed so as to cover an upper portion of the bumper B conveyed by the conveyor 5.

At the front and rear ends of the setting chamber 31, that is, near the boundary between the coating booth 1 and the drying chamber 3, a curved portion 34 formed by bending the filter 17 upward in an arc shape is formed in the left-right direction. You. The curved portion 34 converges the downward airflow, and the airflow is formed by partially increasing the flow velocity.

Next, the operation of the above-described embodiment of the present invention will be described.

While the bumper B mounted on the cart 9 of the conveyor 5 passes through the interior of the coating room 20 of the coating booth 1,
The painting is performed by the spray gun 24 mounted on the painting robot 25. At this time, the air supplied from the supply duct 22 and passed through the dynamic pressure chamber 18 and the static pressure chamber 19 is rectified into a clean and smooth downward airflow and supplied to the coating chamber 20, and the air flowing in the coating chamber 20 does not flow. It flows into the collection chamber 21 through the gap between the snowboards 4 together with the coating paint.

In the collection chamber 21, collected water supplied from the water supply pump 28 to the water supply tank 26 via the filter 29 overflows and flows on the surface of the water guide plate 27, and comes into contact with the collected water. Uncoated paint contained in the airflow is collected. Since the collected water that has reached the tip of the water guide plate 27 falls like a shower at the bottom of the collection chamber 21, the remaining uncoated paint is collected when passing through the collected water where the airflow falls. You. As described above, most of the uncoated paint contained in the airflow is removed in the collection chamber 21, so that it is possible to discharge clean air containing almost no uncoated paint to the outside of the coating booth 1. it can.

Next, the setting booth 2 into which the bumper B coated with paint is carried in has a filter 1 at its front and rear ends.
7 is separated by an air curtain formed by the curved portion 34 and the uncoated paint remaining in the coating booth 1 and the drying furnace 3.
Although the inside dust is prevented from entering, it is difficult to completely prevent the uncoated paint and the dust from entering the setting booth 2. However, since the airflow that has passed through the dynamic pressure chamber 18 and the static pressure chamber 19 flows down inside the setting chamber 31, uncoated paint and dust that have entered the setting chamber 31 due to the airflow flow into the collection chamber 21. It is prevented from being discharged and adhering to the coating film of the bumper B. At this time, the airflow that flows down through the filter 17 is not divided right and left by the deflecting member 33 and directly blown to the bumper B, but only a part of the airflow that has passed through the opening of the deflecting member 33 made of punched metal. Acts on the coating film of bumper B. Thereby, while the solvent contained in the coating film of the bumper B is uniformly evaporated,
The unpainted paint and dust floating below the changing member 33 can be pushed down.

Thus, the air flow containing uncoated paint and dust flows from the setting chamber 31 through the slug 4 into the collection chamber 21, where it contacts the circulating collected water in the same manner as described above and is removed. Is done. The bumper B from which the solvent of the coating film has been evaporated in this way is carried into the drying furnace 3 and is baked and dried.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various small design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

For example, the present invention is applicable not only to the coating of the bumper B of an automobile, but also to the coating of any other object to be coated.

[0023]

As described above, according to the present invention, unpainted paint and dust that flow into the setting chamber from the coating booth or the drying furnace are removed by a clean airflow flowing down the setting chamber. The coating material can be prevented from adhering to the coating film, and a decrease in coating quality can be avoided. The uncoated paint and the like contained in the airflow are efficiently removed without being released into the atmosphere by sufficiently contacting the collected water circulating through the water guide plate in the collection chamber. In addition, since most of the airflow flowing down inside the setting chamber is deflected by the deflecting member and the direct influence on the object to be coated is reduced, it is possible to uniformly evaporate the solvent contained in the coating film of the object to be coated. Instead, the uncoated paint or the like floating near the object to be coated can be pushed down by a part of the airflow that has passed through the change plate made of the perforated plate.

[Brief description of the drawings]

FIG. 1 is a side view of a coating apparatus having a setting booth according to the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a side view of a conventional coating apparatus.

[Explanation of symbols]

 1 ··· Coating booth 3 ··· Drying furnace 17 ··· Filter 21 ··· Collection chamber 27 ··· Water guide plate 28 ··· Water supply pump 31 ··· Chamber 33: Deflection member

Claims (1)

(57) [Claims] 1. A paint, which is provided between a coating booth (1) and a drying furnace (3), and which is coated on an object (B) in the coating booth (1), is baked in the drying furnace (3). In a setting booth which is air-dried before the treatment, a setting room (31) in which the purified airflow flowing through the filter (17) flows down, and a setting room (3)
A collecting chamber (21) provided at a lower portion of 1) for removing uncoated paint and the like contained in the airflow, and the setting chamber (31) covers an upper portion of the object (B) to be coated. The deflecting member (33) in which the perforated plate is formed in the shape of a mountain is disposed as described above, and the collecting chamber (21) is provided with an inclined water guide plate (27) in which collected water circulated by the water supply pump (28) is guided. 2
7) A setting booth, wherein the setting booth is arranged.