KR870001594B1 - Spray painting booth - Google Patents

Abstract

A air inhaling device(9) inhales the ventilating air to the spray painting booth(1). A exhaust device(10) exhausts the air from the booth. A downward blow hole(S1), which is provided on the ceiling of the booth, emits the ventilating air from the air inhaling device(9) to the lower side of the booth. Side way blow holes(S2-S7) emit the air sideway from the device(9). A exhaust hole(23), which is provided on the buttom of the booth, is located under the painted naterial and connected to the exhaust device (10). The air holes(S1- S7) emit the ventilating air in layers of air flow.

Description

Boots for Spray Painting

1 to 3 show a first embodiment of the spray coating booth of the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a schematic plan view, and FIG. 3 is a partially cut perspective view.

4, 5 and 6 are schematic longitudinal sectional views showing a partial improvement of the first embodiment.

7 and 8 show a conventional example, FIG. 7 is a schematic longitudinal cross-sectional view, and FIG. 8 is a schematic plan view.

9 to 11 show a second embodiment, FIG. 9 is a longitudinal sectional view, FIG. 10 is a schematic plan view, and FIG. 11 is a partially cutaway perspective view.

12 to 16 show a third embodiment, in which FIG. 12 is an enlarged plan view of a main part, FIG. 13 is a sectional view taken along line YY in FIG. 12, and FIGS. 14 to 16 are some improvements of the third embodiment, respectively. An enlarged plan view of the main part showing.

17 is a schematic diagram of a first embodiment shown for comparison.

* Explanation of symbols for main parts of the drawings

1: spray coating room 9: air supply means

10: exhaust means 20A, 20B: side wall

23: exhaust port 24: plate guide

24A: Top surface A: To-be-painted

S ₁ : ejection opening S ₂ to S ₇ : lateral ejection opening

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bush for spray coating casings of automobile bodies, home appliances, and the like, and more particularly to ventilation equipment thereof.

Conventionally, in the spray coating boom, as shown in FIG. 7 and FIG. 8, the vibration-ventilated ventilation air as shown in FIG. 7 and FIG. 8 is further laminar in a downward direction from almost the front surface of the ceiling. While providing a ceiling outlet (S ₁ ) to blow out the air and supply it, the entire surface of the grid (7) is almost completely covered with a surplus spray paint mist to mix indoor air. The exhaust port 23 discharged through the gas is distributedly disposed below the bottom 7, thereby causing the exhaust air to flow through the laminar flow in the lowermost direction in the entire area of the ward, so that the excess spray paint mist caused by vortex flows. Increase the ventilation effect by restraining the rise, thereby reducing the adhesion of the paint to the coating device, etc. built in the wood, to improve the maintenance (maintenance) or to float coating Rapidly discharged to the Host was painted a different color of blood is also considered to be transferred by the residual paint mist between the stolen goods to a blood feed water seal exchange in preventing hansangtae efficiently.

In the figure, A is a to-be-painted object, 8 is a multi-joint robot-type automatic coating device equipped with a spray gun 8A, and 5 is a conveyor for carrying in / out of the object to be coated (A). However, as a result of various experiments in the above-described conventional configuration, the laminar flow of the ventilation air downward over the entire area of the wood is excessively sprayed on the coating device 8 or the like arranged around the object A. FIG. Since the ventilation air containing the paint mist is sprayed from above, a large amount of the paint mist is deposited and deposited on the peripheral coating apparatus 8 by the spray, and the deposited paint is naturally dried and easily peeled off. It is detached by the vibration of the painting device 8 or the air flow and attached to the painting surface of the object to be coated (A), not only to cause the coating bonding, but also to cause the failure of the sophisticated and sophisticated automatic coating device to prevent them In order to maintain the frequency and time of cleaning and maintenance, it also leads to a decrease in production efficiency. It was.

An object of the present invention is to provide a reasonable improvement on the flow of the ventilation gas to effectively prevent the adhesion of the paint to the coating device around the coating, while maintaining a rapid rejection of excess spray paint mist in the wood. It also aims to improve the arrival efficiency of spray paints.

In order to achieve this object, the spray coating booth according to the present invention includes a spray coating chamber 1, an air supply means 9 for supplying a ventilation gas to the painting chamber 1, and the inside of the painting chamber 1; An exhaust unit 10 for discharging the ventilation gas, a downward blowout port S ₁ provided on the ceiling of the painting chamber 1 so as to discharge the ventilation gas from the air supply unit 9 downward; and the air supply unit Lateral blowout openings S ₂ to S ₇ which blow out the vent gas from the lateral direction, and an exhaust port 23 provided at the bottom of the painting chamber 1 and communicating with the exhaust means 10. WHEREIN: This exhaust port 23 is located under the to-be-coated object A, It is characterized by the above-mentioned.

That is, as shown in FIG. 1, the confluence of the vented gas in the downward direction and the vented gas in the transverse direction, and the exhaust gas in the direction along the flow direction of the confluence gas, almost eliminates The whole amount is made to flow to concentrate on the to-be-coated (A).

Therefore, the coating material of the downward ventilation gas by the excess flow of the paint spray sheet which floats in the boom can be quickly eliminated by the smooth flow to the exhaust port 23 side of the confluence gas. Due to the deflection on the side (A), it is possible to prevent the upper air containing the excess spray paint mist from being sprayed onto the painting device (8) around the object (A). It is possible to effectively prevent the adhesion of the paint to.

Furthermore, by flowing the ventilation gas to concentrate the object to be coated (A), no matter what direction the spray is directed to the object (A), the object is to be backed up to the ventilation gas flow in the sprayed object (A). Ventilation gas that can reach the painted surface and concentrates on the coated object A even when the excess spray paint mist generated by the spray spreads from the coated object A to the space in the wood. This can be suppressed, and in addition to that, the arrival efficiency of the spray paint can be improved.

As a result of this, the transfer and exchange of the coated objects in the state which prevented the color transfer between the different coated objects by the residual paint mist can be carried out as efficiently as before, and thus the high coating work efficiency can be maintained and The frequency of cleaning and maintenance of surrounding paint equipment can be drastically reduced, and dust can be greatly reduced, thus reducing waste of production time due to maintenance and improving maintenance. The defect rate of the coating can be reduced, and the arrival efficiency can be increased, thereby making it possible to make the spray coating boo with excellent painting workability.

Other advantages of the present invention will become apparent from the description set forth below.

Next, a first embodiment of the present invention will be described with reference to FIGS.

Carry-in / out port for carrying in / out by the conveyor 5 the to-be-painted object A put on the trolley | bogie 4 to the front wall 2 and the rear wall 3 of the spray coating room 1 formed in the substantially rectangular parallelepiped shape ( 6) a multi-joint robot-type magnetic coating device 8 having a spray gun 8A on the bottom 7 formed of a lattice member according to the conveying direction of the workpiece by the conveyor 5; The coating bush which sprays and coats the coated object A in the state left and right juxtaposed on both sides thereof and stopped at a predetermined position in the spray coating chamber 1 by the automatic operation of the coating apparatus 8 according to a predetermined time schedule. It consists.

An air supply fan 9 serving as air supply means for supplying ventilation air to the painting chamber 1 is provided, and an exhaust means for exhausting indoor air together with excess spray paint mist through the lattice bottom 7 is provided. The exhaust fan 10 is provided, and the two fans 9 and 10 are configured to forcibly vent the inside of the painting chamber 1 for the removal of excess spray paint mist.

In the exhaust line R with respect to the exhaust fan 10, the fan 11 which prevents the mass of paint from the bottom 7 from sticking down by causing the washing water W ₁ to flow along the upper surface thereof. ) Is discharged from the bottom of the floor 7 to almost the entire surface thereof, and at the same time, the overflow washing water W ₁ flows from the fan 11 along the inner circumferential surface to prevent adhesion of the paint mist. While the exhaust gas passage 12 has a slit-shaped exhaust pipe passage 12 in a planar view through which the exhaust gas passes rapidly in a downward direction, the high-speed discharge gas from the exhaust pipe passage 12 is disposed below the fan 11. As it collides with the storage surface of the casting 13, the _first mist which captures the paint mist in the exhaust gas with the storage washing water W ₁ by using the difference in inertia mass, thereby separating and removing the paint mist from the exhaust gas. remove Constitute a value (14).

In addition, in the exhaust system R downstream of the first mist removing device 14, the exhaust gas after the large-diameter paint mist and the paint mass are roughly removed by the first mist removing device 14. In the state of confluence with the blow-flow washing water (W ₂ ) flows down to the S box bent pipe 15 at a high speed, and by the centrifugal action accompanying it, the inertia mass differs in the same way as the first mist removing device 14. and a second mist removing apparatus 16 to capture the blind paint mist by using a small diameter even in a falling wash water (W ₂₎ equipment.

In constructing the ventilation structure for the coating chamber 1, the air almost pressurized from the air supply piece 9 to the upper chamber 18 is supplied to the upper chamber 18 through the filter 19. It is formed by the downward blowout opening S ₁ which blows out and supplies to a room in directional laminar flow, and also the lower side 1 of each of the left and right side walls 20A, 20B, and the front and back walls 2 and 3 of the coating chamber 1 are provided. In the range of 3 to 2/3, preferably, the lower half of the air is pressurized and supplied from the air supply fan 9 to the two side chambers 21A, 21B and the front and rear chambers 21C, 21D. Is formed as a transverse blow-out port (S ₂ to S ₅ ) of a panting plate, which is pumped through the filter 22 to the room in a lateral flow direction in the horizontal and horizontal direction.

Thus, the slit-like opening of the exhaust pipe passage 12 as the indoor air exhaust port 23 is disposed below the to-be-coated object A stop position, whereby the ventilation air from the downward blower outlet S ₁ and the horizontal blower outlet S are provided. ₂ to S ₅ ), and substantially the entire amount of the supply ventilation air is discharged from the exhaust port 23 below the workpiece in the direction of joining the vented air from S to ₅ ) and in the direction of substantially joining the combined air in its flow direction. It is configured to make it flow in the state to concentrate on).

In other words, the vented air flow is applied to the workpiece of the downward vented air by lateral blowing of the vented air while achieving rapid discharge of surplus paint mist and improved arrival efficiency due to the concentrated flow to the workpiece. (D) the ventilation air from above containing excess spray paint mist is sprayed to the coating device 8 around the coated object by drift to the side, and the paint is attached to the peripheral coating device 8 due to the soup gage. It is configured to prevent.

Next, another embodiment will be described.

As shown in Fig. 4, the front sides of the side walls 20A and 20B may be formed by the horizontal outlets S ₂ and S ₃ in the side venting of the ventilation gas, and the side walls 20A, (20B) to which the sidewise part outlet (S ₂₎ of, it is possible to change the enemy does formed of a (S _3).

In addition, as shown in FIG. 5, the ventilation gas is provided between the ceiling 17 as the downward blowout outlet S ₁ and the side walls 20A and 20B as the horizontally directed blowout outlets S ₂ and S ₃ . It is also possible to form inclined lateral blowout openings (S ₆ ), (S ₇ ) that the slant is directed downward. The horizontal blowout openings S ₄ and S ₅ formed in the front and rear walls 2 and 3 may be omitted.

In taking out the ventilation gas in the lateral direction and in the downward direction, as shown in FIG. 6, the air outlet S which blows almost the entire surface of the upper wall of the dome forming the coating chamber 1 toward the center of the assist shape. And the exhaust port 23 is formed at the center of the support shape, and thus the confluent gas is flowed in the state in which the assist port is centered with respect to the workpiece A disposed above the exhaust port 23. In the present invention, the venting direction of the ventilating gas is within the inclination range of 45 ° with respect to the horizontal direction, collectively referred to as the transverse air outlets S ₂ to S ₇ , and the venting direction of the venting gas is 45 with respect to the downward vertical direction. that in the gradient range of ° and is generically referred to as the outlet direction (S _1).

The specific structures of the downward blowout opening S ₁ and the horizontal blowout openings S ₂ to S ₇ can be variously improved, and the structure of the exhaust port 23 can also be variously improved. The blow-out air volume ratio and blow-out speed ratio of the ventilation gas from the downward blower opening S ₂ and the ventilation gas from each of the transverse direction blowing sections S ₂ to S ₇ are 1: 1, 1: 2, or 2: 1, respectively. It is possible to change the enemy.

The following second embodiment will be described with reference to FIGS. 9 to 11.

The same configuration as that of the first embodiment described above will be omitted by the same reference numerals.

That is, the partial structure and the special guide 24 which are the characteristics of 2nd Embodiment are explained in full detail.

The slit-like opening of the exhaust pipe passage 12 as the indoor air exhaust port 23 is disposed below the stop position of the workpiece A and at the side of the workpiece A from the left and right side walls 20A, 20B. a ventilation gas comprising a top surface (24A) to tilt downward toward the a guide sealing devices from the intermediate portion in the height direction of the tubular guide lateral outlet (S _2, S ₃₎ is formed on the side wall (24A, 20B) (24) installed at the rear side of the base (8B) of 8 to sheer conditions over to a position higher than that, and thus the downward direction air outlet (S ₁₎ seismic ventilation air and sidewise outlet blown from (S ₁ to S ₅₎ pumping seismic ventilation air from The supply ventilation air by the confluence of the condensation with the air and the condensation of the condensed air from the exhaust port 23 under the workpiece in the direction of being substantially along the direction of its flow In a state in which almost all of the concentration is concentrated on the coating (A) It is configured to flow.

That is, the drift of the downward ventilation air to the workpiece (A) side by lateral blow-out of the ventilation air while achieving rapid discharge of surplus paint mist and improvement of efficiency by concentrated flow of the ventilation air to the workpiece side, and The guide 24 guides the ventilation air from above containing excess spray paint mist to be sprayed onto the base 8B of the coating device 8 around the workpiece, and further below the guide 24. Due to the lateral blow-out of the vented air from the lateral blowout outlets S ₂ and S ₃ located, the vented air containing the surplus paint mist is prevented from being swept under the guide 24, and the sprayed or swept away It is comprised so that attachment of the paint mist to the coating apparatus base 8B can be prevented reliably.

In addition, the specific shape and the attachment structure of the guide 24 having the inclined upper surface 24A for guiding the ventilation gas located below the side of the object to be coated can be variously improved, and the specific inclination angle of the inclined upper surface 24A can be improved. Rogue changes are possible. Moreover, the to-be-coated side end of the guide 24 may be smoothly formed.

The blow-out air volume ratio and blow-out speed ratio of the ventilation gas from the downward blower opening S ₁ and the ventilation gas from the lateral blower outlets S ₂ to S ₅ can be changed.

Next, the third embodiment will be described with reference to Figs. 12 to 17 degrees.

17 is a schematic diagram of the first embodiment indicated as a comparative reference.

Also in this third embodiment, the same components as those of the first and second embodiments are denoted by the same member numbers, and detailed description thereof will be omitted. That is, the exhaust port 23, which is the feature of the third embodiment, will be described in detail.

As shown in FIG. 12, the exhaust port 23 is arranged in the conveying direction by the conveyor 5 with a plurality of enemies, and the transverse length thereof is almost equal to the width of the automobile body A, which is the object to be coated. The plane of the car body A, which is composed of a slit and positioned at both ends in the parallel direction, is positioned at both front and rear ends when viewed from the plane of the car body A stopped at the coating position. Located near the front and rear edges of the front and rear edges when viewed from the side, and both of them, or both ends of the longer direction, just below the left and right cross-sections when viewed from the plane of the car body (A) stopped at the coating position, respectively. It is installed near to.

That is, it is provided in the state of distributing in the circumferential direction near the bottom of the outer circumferential surface in the planar view of the stationary vehicle body A, and in the state of distributing it just below the stationary vehicle A.

In addition, the slit-shaped exhaust port 23 is in a state of having a width up and down, and is formed in a form of gradually narrowing its width in the transport direction as it goes downward.

According to the configuration of the third embodiment, since the ventilation air can be discharged not only under the periphery of the vehicle body A but also directly under the vehicle body A, the vehicle body (A) can be discharged through the gap between the vehicle body A. A) The surplus spray paint mist that goes down can be discharged quickly and smoothly without staying locally under the body (A), moreover, the horizontal outward position than the position directly below the main body of the body (A). Since the exhaust port 23 does not exist in the air, the surplus spray paint mist is scattered to the outside of the body A in the horizontal direction so that the robot 8, which is a coating device, is formed. It can also be prevented from adhering to.

Some improvements are shown below.

A. The exhaust port 23 is disposed in the circumferential direction immediately below or near the outer periphery when viewed in the plane of the stationary coated object A, and dispersedly disposed just below the stationary coated object A. As shown in Fig. 14, a plurality of exhaust ports 23 of a circular shape (which may be square) are provided in parallel as shown in FIG.

B. The exhaust port 23 is disposed in the circumferential direction immediately below or near the outer periphery when viewed in the plane of the stationary to-be-coated A, and further distributed to be disposed just below the stationary to-be-coated A. ), As shown in Fig. 15, a plurality of slit-like exhaust ports 23 along the object to be transported are arranged side by side at an interval of enemy in the horizontal direction.

C. The exhaust port 23 is disposed in the circumferential direction immediately below or near the outer periphery when viewed in the plane of the stationary painting (a), and in the state of being dispersed just below the stationary coating (A). As shown in FIG. 16, the slit-like exhaust port 23 along the transverse direction and the slit-like exhaust port 23 along the conveyance direction are provided together.

D. Compared with FIG. 17 (first embodiment) in which the exhaust port 23 is provided directly under the stationary object A, the position of the exhaust port 23 is slightly biteed.

As mentioned above, although the 1st thru | or 3rd embodiment and some improvement of each Example were demonstrated in detail, the Example which variously changed within the range of the technical idea of this invention can be implemented.

Claims (10)

A spray coating chamber 1, an air supply means 9 for supplying a ventilation gas to the painting chamber 1, an exhaust means 10 for exhausting the ventilation gas in the painting chamber 1, and the air supply means (9) the ventilation outlet from the air supply means (9) and the downward blowout opening (S ₁ ) provided on the ceiling of the coating chamber (1) so as to blow the ventilation gas from the downward direction. The transverse blow-out ports S ₂ to S ₇ discharged from the exhaust chamber, the exhaust port 23 provided at the bottom of the coating chamber 1 and communicating with the exhaust means 10, and the exhaust port 23 are avoided. A spray coating booth which is located below the coating material A. The spray coating pour according to claim 1, wherein each of the two outlets (S ₁ ), (S ₂ to S ₇ ) emits a vent gas in a substantially laminar flow. 3. The pair of the lateral ejection openings S ₂ , S ₃ , S ₄ , S ₅ , S ₆ , and S ₇ is arranged to face each other. Spray paint bush. The spray coating pour according to claim 2, wherein the transverse blowout ports S ₂ to S ₇ are arranged almost all around the object to be coated A. 3. An upper surface (3) according to claim 2, wherein the upper surface of the coating chamber (1) is inclined downward from the height direction intermediate portion of the horizontally-outlet (S) and (S) formed in the side walls (20A) and (20B) ( A spray coating bush further comprising a tubular guide 24 having 24A). The pour for spray coating according to any one of claims 2 to 5, wherein the exhaust port is located below the outer circumference of the object to be coated (A). 3. The spray coating booth as claimed in claim 2, wherein said exhaust port (23) is located directly underneath the object to be coated (A). The spray coating pour according to claim 2, wherein the exhaust port (23) is provided in slit form in a plurality of places at appropriate intervals below the outer circumference of the object to be coated (A). 7. The spray coating booth as claimed in claim 6, wherein said exhaust port (23) is located directly underneath the workpiece (A). 7. The spray coating pour according to claim 6, wherein the exhaust port is provided with a plurality of slit-shaped sections at appropriate intervals below the outer circumference of the object to be coated (A).

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