JP3527383B2 - painting 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 coating booth configured to suck polluted air containing a paint mist from a coating chamber into an exhaust chamber formed thereunder for purification treatment.

[0002]

2. Description of the Related Art FIG. 4 shows an air-supplied coating booth 1 used for coating automobile bodies and the like, in which conditioned air is made to flow down into a coating chamber 3 from an air-supply chamber 2 formed in a ceiling. The contaminated air containing the paint mist oversprayed from is sucked into the exhaust chamber 4 formed below the coating chamber 3 for purification treatment. And coating room 3
On the floor surface of the, the contaminated air is made to flow down to the exhaust chamber 4 at the time of painting, and at the time of maintenance work, a cage-shaped floor surface forming member called grating 41 is spread so that the worker can ride on it and work. At the center of the floor surface, a conveyor 6 is provided which conveys an article W to be coated such as an automobile body on a carriage 5. By the way, grating 4
1, the paint mist oversprayed at the time of coating and the waste paint thrown away from the coating machine T at the time of color change cleaning gradually adhere to it, and if it is left unattended, the pressure loss of the contaminated air passing through the grating 41 will occur. However, there is a problem in that the air flow in the coating chamber 3 is disturbed and the coating quality is adversely affected. For this reason, conventionally, the cleaning work of the grating 41 has been regularly performed. However, the grating 41 is, for example, a square of about 50 cm, and the weight thereof is about 10 kg. Since it is spread over the entire area, it is hard work to remove it and wash it.

[0003] Therefore, a coating booth provided with a retractable grating 41 that is retracted to a position where the paint mist or the waste paint is not applied (FIG. 4: chain line shown) during coating and advances as the floor surface of the coating room during maintenance work is proposed. (Japanese Patent Publication No. 6-34954, JP-A-7-11657)
(See Japanese Patent Publication No. 1). According to this, since the grating 41 is retracted at the time of coating, there is no possibility that the paint discharged from the coating machine T will be attached to the grating 41 at the time of coating or color change cleaning, and it will be advanced at the time of maintenance work. Since it is the floor surface, the worker can ride on it and perform maintenance work.

[0004]

However, when the grating 41 is moved back and forth in this manner, the portion thereof covers a wide area and the grating 41 as a whole reaches a considerable weight. Therefore, there is a problem in that the driving device and the driving mechanism are large in size for advancing and retracting the large-sized grating 41 over a wide range. Also, paint booth 1
There is a problem that a space for retracting the grating 41 must be secured outside or inside of the enclosure, and a storage facility for the retracted grating 41 must be provided, which increases the facility cost.

Therefore, the present invention does not require any drive device or drive mechanism for advancing or retracting such a large grating, and does not require any space for retracting the grating or a storage facility for the retracted grating. In other words, it is a technical subject to prevent the coating failure due to the turbulence of the air flow in the coating chamber without burdening the exhaust fan.

[0006]

In order to solve this problem, the present invention provides a paint mist oversprayed from an automatic coating device installed on both left and right sides or one side of a conveyor that conveys an object to be coated. In a coating booth configured to suck the polluted air containing the air from the coating chamber into an exhaust chamber formed below the coating chamber, a gondola guide rail is provided between the conveyor and the automatic coating device in parallel with the conveyor. A gondola, which is laid and serves as a scaffolding for work that can be self-propelled on the guide rail, is located between a retracted position where paint mist does not adhere during coating and a transfer position formed on one end side of the gondola guide rail. It is characterized in that it is arranged so that it can move forward and backward.

According to the present invention, when performing maintenance work, an operator is placed on the gondola at a retracted position where the paint mist does not adhere, and the gondola is advanced to the replacement position. Next, if the gondola is replaced on the gondola guide rail and is allowed to travel to the work position by itself, maintenance work can be performed at the work position. Then, when the maintenance work is completed, the operator is put on again to return to the retracted position. In this way, since the worker can be transferred to the work position by the gondola during maintenance work, there is no need for any grating for maintenance work where paint mist or waste paint adheres, and an automatic coating device is installed. In the coating room, since it is not necessary for the worker to enter the coating room at the time of coating, it is not necessary to provide grating. Further, at the time of coating, since the paint mist and the waste paint thrown away from the painting machine do not adhere to the retreat position, the paint mist does not adhere to the gondola. In addition, the gondola needs only to be a small one that can carry a worker, and its advancing / retracting device is extremely small because it can move a small gondola forward and backward.The space for retracting the gondola to the retracted position is also sufficient. The area is enough.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a plan view showing an example of a coating booth according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a perspective view showing a main part thereof.

In the coating booth 1 of this example, conditioned air is made to flow down into the coating chamber 3 from the air supply chamber 2 formed in the ceiling portion, and contaminated air containing paint mist is formed below the coating chamber 3. It is configured to be sucked into the exhaust chamber 4 for purification processing. In the coating chamber 3, the tip of the robot arm 8 is coated on the support bases 7R and 7L arranged on the left and right sides of the conveyor 6 along which the object W to be coated, such as an automobile body, is carried on the carriage 5. A painting robot (automatic painting device) 9 equipped with the machine T is provided. Further, the conveyor 6 has a pair of left and right guide rails 10 and 1 for guiding the wheels of the carriage 5.
0, and a drive device 11 such as a drive chain that engages with the truck and pulls the truck.

A gondola guide rail 12 for guiding a gondola G, which is a scaffold for work, is provided between the conveyor 6 and the support bases 7R and 7L arranged on both right and left sides thereof.
A and 12B are laid in parallel with the conveyor 6.
The gondola G is provided with an air motor (not shown) for driving wheels (not shown) in forward and reverse directions, and by operating a handle 17 of an operation panel 16 formed on the gondola G, the gondola G is operated. The operator can ride the gondola G forward / backward along the gondola guide rails 12A and 12B to travel by himself / herself. The gondola G has a base B with wheels attached.
And a cage C on which an operator rides. The base B is provided with an elevating mechanism 19 for adjusting the height of the cage C at the working position.

Reference numeral 13 denotes left and right side walls 3R of the coating chamber 3,
A gondola lead-in rail that is laid in the direction orthogonal to the gondola guide rails 12A and 12B from the vicinity of 3L toward the center of the coating chamber 3, and the gondola guide rails 12A and 12A from the retreat position where paint mist does not adhere during coating.
It is laid up to the transfer position formed on one end side of B.
Then, the horizontal moving table 1 is horizontally advanced and retracted along the gondola pull-in rail 13 from the retracted position to the replacement position described above.
The moving rails 15A, 15 supporting the gondola G
B is formed and the moving rails 15A and 15B are formed.
Is when the horizontal moving base 14 has advanced to the replacement position described above,
The gondola guide rails 12A and 12B are connected to each other. Reference numeral 18 is a beam for installing the support bases 7R and 7L that support the conveyor 6 and the coating robot 9 and the gondola guide rails 12A and 12B in the coating chamber 3. Also, at least the left and right support bases 7R
There is no grating between the 7L and the conveyor C to form the floor surface of the coating chamber 3, and each rail 1 of the conveyor C
A grating 20 is arranged between 0 and 10.

The above is an example of the configuration of the present invention, and its operation will be described below. First, when performing a coating operation, with the gondola G supported by the moving rails 15A and 15B, the horizontal moving base 14 is retracted to a retracted position where paint mist and waste paint do not adhere. In this state, if the object W to be coated is conveyed by the conveyor 6 and the coating is performed by the coating robot 9, the contaminated air including the paint mist oversprayed from the coating machine T will gondola along the side surface of the object W to be coated. After passing through between the guide rails 12A and 12B, it is sucked into the exhaust chamber 4 and purified. At this time, since the conveyor 6 side gondola guide rails 12A and 12A and the conveyor 6 between them are covered with the carriage 5 and the object W to be coated, the paint mist does not easily adhere, and the support bases 7R and 7L side gondola guide rails. 1
Since 2B and 12B are separated from the side surface of the object W to be coated, the amount of paint mist attached is small. In addition, since the coating room 3 is not provided with a flooring grating, the grating is never contaminated with paint mist or waste paint that is thrown away.

Next, when performing the maintenance work, when the worker boards the gondola G retracted to the retracted position and advances the horizontal moving table 14 to the replacement position,
Moving rails 15A and 15B supporting the gondola G
Is continuous with the gondola guide rails 12A and 12B. In this state, the operator riding the gondola G operates the operation panel 16
When the steering wheel 17 is operated, the air motor is activated and the gondola G runs on the gondola guide rails 12A and 12B. When the work position is reached, the handle 17 is operated to stop the gondola G and raise the cage C to a predetermined height as necessary to perform maintenance work. When the maintenance work is completed, the operator is put on the gondola G again to return to the transfer position, and after the gondola G has moved on the moving rails 15A and 15B, the horizontal moving base 14 is retracted to the retracted position.

As described above, in the coating chamber 3 in which the coating robot 9 is arranged, it is not necessary for the worker to enter the coating chamber 3 at the time of coating, and at the time of maintenance work, the worker can be moved to the work position by the gondola G. Since it can be transferred, it is not necessary to provide a grating for maintenance work at the place where paint mist or waste paint adheres. In addition, the gondola G need only be a small one that can carry a worker,
Move the gondola G back and forth from the retracted position to the transfer position,
The drive unit for moving along the gondola guide rails 12A and 12B is also extremely small, and the gondola G
It is not necessary to secure an extra space because the space for evacuating the car to the retreat position is sufficient for the area of the gondola G.

[0015]

As described above, according to the present invention, since the gondola is small enough to carry an operator, the advancing / retreating device can be extremely small, and the equipment cost is low. The space for retreating the gondola to the retreat position is sufficient if the area of the gondola is sufficient, and there is an effect that no wasted space is needed. In addition, in a coating room equipped with an automatic coating device, the operator does not have to enter the coating room during painting, and the gondola can transfer the operator to the working position during maintenance work. No need for grating for maintenance work at places where waste paint adheres, and no need for a drive unit or drive mechanism for moving large gratings back and forth, and storage equipment for retracted grating, reducing equipment costs. In addition to the effect that the paint adheres to the grating, it does not impose a burden on the exhaust fan or a paint failure due to the turbulence of the air flow in the paint chamber. Have.

[Brief description of drawings]

FIG. 1 is a plan view showing a coating booth according to the present invention.

FIG. 2 is a front view thereof.

FIG. 3 is a perspective view showing a main part thereof.

FIG. 4 is a front view showing a conventional coating booth.

[Explanation of symbols]

1 ... Painting booth 3 ... Painting room 4 ... Exhaust chamber W ... ・ Car body (object to be coated) G ... Gondola 9- ・ Painting robot (automatic painting device) T: coating machine 12A, 12B ... Gondola guide rails

Claims (2)

(57) [Claims] 1. A conveyor (6) for carrying an article (W) to be coated.
Contaminated air containing paint mist oversprayed from the automatic coating device (9) installed on both left and right sides or on one side of the coating chamber (3) to the exhaust chamber (4) formed therebelow. In a coating booth configured to suck and purify, a gondola guide rail (12A, 12B) is provided between the conveyor (6) and the automatic coating device (9) in parallel with the conveyor (6).
Gondola (G), which is a scaffolding for work that can be self-propelled on the guide rails (12A, 12B), is laid down, and the gondola guide rails (12A, 12B) are at a retracted position where paint mist does not adhere during painting. A coating booth, which is arranged so as to be capable of advancing and retreating with respect to a transfer position formed at one end side of the coating booth. 2. The gondola (G) comprises a base (B) traveling along a gondola guide rail (12A, 12B) and a cage (C) on which an operator rides. The base (B) has a cage. The coating booth according to claim 1, wherein an elevating mechanism (19) for elevating (C) is provided.