JPS61107967A - Painting booth - Google Patents

Abstract

PURPOSE:To attain the prevention of color shift and the enhancement of replacement efficiency by effectively excluding residual suspended mist, by automatically displacing the exhaust position of an exhaust port to the place directly under an article to be painted in synchronous relation to the feed-out movement of the article to be painted. CONSTITUTION:An exhaust port 6 is formed by providing a plurality of slit like exhaust openings 6A, 6B over entire surfaces of the plan-view projection surface area X of an article 1 to be painted, the peripheral area in the vicinity thereof and the set distance y-area in the downstream side of a feed direction directly under the article 1 to be painted present at a spray painting position. In this case, opening and closing lids 13 are respectively provided to the slit like exhaust openings 6B and, with the feed-out movement of the article 1 to be painted after the completion of spray painting, each exhaust opening 6B is successively opened from one positioned directly under the moving article 1 to be painted among the exhaust openings 6B held to a closed state at the time of spray painting in synchronous relation to the movement of the article to be painted. Simultaneously with the feed-in of the next article to be painted, all of the exhaust openings 6B are again brought to a closed state.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a painting booth for spray painting automobile bodies, etc., and more specifically, the present invention relates to a painting booth for spray painting automobile bodies, etc. A device and an exhaust port are provided to intensively discharge the surplus spraying material mist together with the gas in the coating work area from almost directly below the object to be coated at the spray coating position, thereby spraying one, for example, a plurality of exhaust ports. Compared to mold holes that are simply dispersed at the bottom of the work area, excess spray paint mist that is sprayed toward the object to be painted and surplus spray paint mist that tends to stay below the object to be painted can be quickly removed. When changing the objects to be painted in the painting work area, it is possible to efficiently change the objects to be painted while preventing color transfer between objects to be painted with different colors due to excess spray paint mist remaining in the area. Concerning a painting booth that allows the painting to be carried out.

[Conventional technology]

Conventionally, as the above-mentioned painting booth, the position of the exhaust air from the exhaust port is fixedly located almost directly below the object to be painted, with the position of the exhaust port corresponding to the planar projection area of the object at the spray coating position. Proposed.

(Refer to Japanese Patent Application No. 59-75450.) [The shortcomings to be solved by the invention] However, although the removal of excess spray paint mist can be speeded up by adopting the above-mentioned conventional structure, It is still difficult to completely remove the floating paint that accumulates on the side of an object in a short period of time, and for this reason, when moving the object to be coated after spray painting, it is difficult to completely remove the floating paint on the side of the object. There was still one phenomenon in which the floating paint mist moved to some extent along with the object to be painted.

However, the above-mentioned conventional structure K does not exist.

When the remaining floating paint mist below moves with the object to be coated, the remaining floating paint mist, especially the floating paint mist located on the tip side in the direction of movement, moves out of the exhaust position of the exhaust port, causing the remaining floating paint mist to move away from the exhaust position of the exhaust port. Although the amount of paint mist is small, it remains suspended in the painting work area for a long time, causing color transfer between objects coated with different paint colors, so color transfer is still a problem. The reality is that it has not been possible to sufficiently achieve both prevention of problems and improvement of replacement efficiency.

The purpose of the present invention is to provide a rational improvement to the exhaust port, and while taking advantage of the conventional advantages of intensively exhausting air directly below the object to be painted, it is possible to improve the efficiency of the movement of residual floating paint mist caused by the movement of the object to be painted. The point is to be able to deal with it as well.

[Means for solving problems]

The characteristic configuration of the painting booth according to the present invention is that a device is provided for displacing the position of the exhaust air from the exhaust port in the direction of conveyance of the object to be painted, and the exhaust position is adjusted to be close to the object to be painted in synchronization with the conveyance of the object to be painted by the conveyance device. A means for automatically operating the above-mentioned displacement device is provided so as to be located directly below, and its functions and effects are as follows.

[For production]

By automatically displacing the exhaust position of the exhaust port to follow the movement of the object to be painted, the exhaust from directly below the object to be painted is maintained regardless of the movement of the object to be painted.

Therefore, while the excess spray paint mist can be removed as quickly as before when the object to be painted is in the spray painting position, it is also possible to remove the remaining floating paint mist below the object that moves as the object moves. , regardless of the movement of the paint mist, an effective exhaust action from directly below can be continued, and it is possible to effectively avoid floating paint mist remaining in the area for a long time due to movement of the paint mist.

〔Effect of the invention〕

As a result, we decided to improve the exchange efficiency of the objects to be coated by speeding up the start of transport of the objects to be coated after spray painting. This was achieved while sufficiently preventing color transfer, and the overall continuous painting work efficiency was further improved compared to the conventional booth mentioned above.

〔Example〕

Next, embodiments of the present invention will be described based on FIGS. 1 to 4.

As shown in Figures 1 to 8, in a painting booth for spray painting object +11, a trolley (2A)
The ventilation air supplied from the air supply fan (3) is supplied from the ceiling to the room-shaped blowing size painting work equipment in which the objects to be coated (tl) placed on the K are sequentially brought in and out by the conveyor device (2). A ceiling outlet (4) that blows out a downward laminar flow from almost the entire surface, and a side wall outlet that blows ventilation air supplied from the air supply fan (3) sideways from the lower half of the left and right side walls. (5
), and the object to be coated (11
Concentrates the air inside the moth with excess spray paint mist from directly below the
An exhaust port (6) is provided to discharge the air, thereby creating a merging effect between ventilation air flowing downward in a laminar flow and ventilation air flowing sideways, and a concentrated exhaust effect from directly below the object to be coated (1+). , the air in the area is sprayed onto the object to be coated (1
), and by its flow form, the excess sprayed paint mist of the paint that is intensively sprayed on the object to be painted (11) can be quickly removed.

The object to be painted (11)
It is configured to quickly remove the paint mist that tends to stay in the F direction of 1).

In the figure, (7) is an automatic painting robot, <8+ is a grating floor, (91 is a washing water underpan that catches air containing paint mist that has passed through the grating floor (8), and falling paint lumps), and , (IOi, (Ill is a first and second mist removal device that removes paint mist by bringing exhaust air containing paint mist into contact with cleaning water α), and α is an exhaust fan.

As shown in FIGS. 2 to 4, the exhaust port (6) is formed by a planar projection area tX of the object (11) directly below the object (1) at the spray coating position ) and its vicinity, and a plurality of slit-shaped exhaust holes (6A) are distributed over almost the entire area, and a set distance is set from the end of the dispersion area on the F hand side in the entire feeding direction of the object to be coated to the downstream side in the conveying direction. A plurality of similarly slit-shaped exhaust holes (6B) are arranged side by side in the conveying direction of the object to be coated in an extended area extending by +y) and having a left-right phase that is almost equal to the above-mentioned distributed arrangement area. It is.

Each of the slit-shaped exhaust holes (@) in the extension area is equipped with an opening/closing lid, and a driving cylinder I for opening/closing the opening/closing lid (+) separately is provided therein, and the drum-equipped robot (7) and the conveyor An automatic control device (l!il) that operates in conjunction with the device (2) based on a preset time schedule, the object to be coated (1) after spray painting is completed.
As the slit-shaped exhaust holes (6B) in the extended area that were closed during spray painting were carried out and moved, from the one located 100 below the stationary and moving object +1+, that is, the object to be painted ( 1) The slit-shaped exhaust ports in the extension area are opened sequentially starting from the one on the upper side in the conveyance direction, and when the next object to be coated (one reaches the spray coating position),
6B), a control circuit is incorporated which automatically operates each drive f/cylinder 4 for negative pasting in conjunction with the conveyor device (21).

In other words, in synchronization with the unloading movement of the object to be coated (11).

By automatically displacing the exhaust position of the exhaust port (+6) so that it is located directly next to the object to be painted (1), it will be possible to move the exhaust position below the object to be painted as the object to be painted moves. This allows residual floating mist to be effectively eliminated.

[Another example]

Next, another example will be listed.

In order to displace the exhaust position of the exhaust port (6), as the slit-shaped exhaust holes (6B) in the extension area are sequentially opened in the embodiment described above, the coating that has come off from directly under the moving object (1) is removed. Slit-shaped exhaust hole (6A) on the upper side in the direction of conveying the painted object
Alternatively, the exhaust ports (6
) configuring the slit-shaped exhaust ports (6A) and (6B)
Instead of displacing the exhaust position by opening and closing a part of the
The exhaust port (6) itself may be moved to follow the movement of the subject matter fi+, and the specific form of displacement can be varied in various ways.

In addition, in the various displacement forms described above, the slit-shaped exhaust hole (
6B) The structure for displacing the exhaust position, such as the lid for opening and closing and the structure for moving the exhaust port +81 itself, is collectively referred to as a displacement device α-shun.

The displacement distance (y) of the exhaust position can be changed as appropriate.

In order to automatically operate the displacement device jfo field in synchronization with the movement of the object to be coated (t+tD), automatic control such as giving an operation command to the drive device (J4+) for the displacement device I in conjunction with the conveyor device ff1 (2!) is performed. As shown in Fig. 5, instead of employing a carriage (2A) for placing the object to be coated (2A) and a conveyor device (110), as shown in Fig. 5,
21 is brought into contact with the opening/closing operation arm (18A) for the opening/closing lid α of the slit-shaped exhaust hole (6B), and due to the contact action, the closing biasing spring (18B)
) The slit-shaped exhaust hole (6B) located directly below the moving object (1) opens and closes (IW is opened and held open, etc.), and various mechanical interlocking operation configurations are adopted. It is also possible to do so, and the automatic control system, mechanical interlocking operation configuration, and other automatic masterpiece configurations of Akira's type are collectively referred to as automatic operation means.

[Brief explanation of drawings]

1 to 4 show embodiments of the present invention, FIG. 1 is a cross-sectional view, FIG. 2 is a side sectional view, FIG. 8 is a plan view, and FIG. 4 is an exhaust position displacement operation structure. FIG. FIG. 5 is an enlarged sectional view showing another embodiment of the present invention. (1)...Object to be painted, (2)...Transport device, (6)...Exhaust port, α4...Displacement device.

Claims (1)

[Claims] A conveying device (2) for carrying the object to be painted (1) into and out of the spray painting work area (A), and a concentrated painting work area from almost directly below the object to be painted (1) at the spray painting position. (A
), the painting booth is provided with an exhaust port (6) for discharging excess spray paint mist together with the gas in
A device (13) is provided for displacing the position of the exhaust gas in the conveyance direction of the object to be painted (1), and the position of the exhaust gas is shifted in synchronization with the conveyance of the object to be painted by the conveyance device (2). 1) so that the displacement device (
13) A painting booth equipped with a means to automatically operate.