JPS6025567A - Painting booth for automatic painting machine - Google Patents

Abstract

PURPOSE:To reduce the supply of conditioning air to an automatic painting machine arranged zone to a large extent, by isolating the automatic painting machine by an air curtain while recirculating the air stream of the air curtain around the automatic painting machine. CONSTITUTION:When an article W to be painted is painted, blowers 23, 23a-23c are respectively rotated by motors and conditioning air supplied from an air supply duct and a part of conditioning air in a painting chamber 3 are formed into air curtain streams shown by the arrows through the blowers to surround the automatic painting machine 14. At this time, air curtain streams are recirculated by the blowers and the once formed air curtain streams are succeedingly formed during painting without involving conditioning air in the painting chamber 3. Further, in the space part of the air curtain, positive pressure is always kept by conditioning air supplied from the air supply duct 21 and, therefore, the invasion of paint mist into the painting machine arranged zone is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a coating booth in which an automatic coating machine is installed.

Conventional Art 1 For example, in a painting booth for an automatic paint machine in which car bodies are continuously conveyed and painted by a conveyor or the like, as shown in FIG.

The tunnel-shaped paint booth 51 has an air supply room 52. It is formed into three chambers, a painting chamber 53 and an exhaust chamber 54,
The air supply chamber 52 and the painting chamber 53 are separated by a filter 55 for removing fine dust, and the painting chamber 53 and the exhaust chamber 54 are separated by a screen 56. And painting room 5
The conveyor 5 is placed on the top surface of the 3d bamboo basket 56 in the longitudinal direction.
7 is laid, and rails 58, 58a are laid on both sides of this conveyor 57. This rail 58゜5
On the side of 88, there is an automatic painting machine 60 such as a reciprocator, a painting robot, and a paint robot, which has a spray gun 59° 59a that moves vertically and sprays paint toward the automobile body W.
．． 60a is provided. Also.

On both side walls 54a of the exhaust chamber 54, water supply gutters 61, 61a are arranged horizontally in the longitudinal direction.

Inside the water supply gutter 61, 618, flow plates 62.degree. 62a are provided on opposite sides thereof and extend downward. An exhaust duct 64 in which an exhaust fan 63 is provided is connected to the side 54a of the exhaust chamber 54. Furthermore, the ceiling 11j15 of the air supply to 52
2a is connected with an air supply duct 65, and this air supply duct 65 is configured to include an air conditioner 66 and an air supply fan 67.

When painting the automobile body W, the air conditioner 66 supplies conditioned air to a predetermined temperature of 11 degrees to the air supply chamber 52 by the air supply fan 67, and
The conditioned air supplied to the air supply chamber 52 is passed through a filter 55 and evenly supplied to the painting chamber 53, and together with this conditioned air, paint mist that has not been applied to the automobile body W is sent to the exhaust chamber 54 by an exhaust fan 63. At the same time, the paint mist is removed from the conditioned air by contacting the water H flowing on the flow plate 62.62a of the exhaust chamber 54.

However, in such a painting booth for an automatic painting machine, the conditioned air supplied to the air supply chamber 52 is passed through a filter 55 and is evenly supplied to the entire painting chamber 53. Therefore, among the conditioned air supplied to the painting room 53,
Although the conditioned air in the zone where the automatic painting machines 60 and 60a are installed is effectively used by discharging paint mist into the exhaust chamber 54, the air conditioning in the zone where the automatic painting machines 60 and 60a are not installed is effectively used. The air is discharged into the exhaust chamber 54 without being used effectively, which not only wastes the conditioned air supplied from the air conditioner 66, but also wastes energy such as electricity and steam used for air conditioning. There is a problem with consuming more than necessary.

The present invention was made in order to solve the above-mentioned problems, and its purpose is to isolate the automatic painting machine with an air curtain and circulate the air flow of the air curtain around the automatic painting machine. An object of the present invention is to provide a painting tooth for an automatic painting machine that can significantly reduce the supply of conditioned air to the machine installation zone.

The above object of the present invention is to reduce the space inside a painting booth.

Three chambers, an air supply chamber, a painting chamber, and an exhaust chamber, are formed sequentially from above, with the filter and the screen as boundaries, respectively, and the object to be coated is At the same time, an automatic coating machine is installed on the side of this conveyor, and a blower is installed so that the automatic coating machine is surrounded by an air curtain flow.
This is achieved by a coating booth for an automatic coating machine, which is characterized by having a positive pressure inside the air curtain flow surrounding the automatic coating machine.

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a cutaway front view of a painting booth for an automatic paint machine according to the present invention, Fig. 2 is a plan view taken along line I+-'n in Fig. A front view of the blower used, FIG. 4 is a sectional view taken along the line ff -1v in FIG. 3. In FIGS. 1 to 4, reference numeral 1 denotes a paint booth formed in the shape of a tunnel, and the space inside this paint booth 1 is as follows.

Air supply room 2. Painting chamber 3 and exhaust: Three chambers are formed in sequence: iA4, and the air supply chamber 2 and painting chamber 3 are separated by a filter 5 that removes fine dust.

The painting room 3 and the exhaust room 4 are separated by a screen 6 as a boundary.

An air supply duct 7 is connected to the air supply chamber 2,
An air supply fan 8 and an air conditioner 9 are connected to the air supply duct 7. The painting room 3 is open at both ends in the longitudinal direction, and a conveyor 10 is installed on the top surface of the screen in the painting room 3 in the longitudinal direction. A plurality of dogs 12 are provided to be hooked to a trolley 11 for mounting and transporting. Rails 13, 138 are provided on both sides of this conveyor 10.
are laid, and the trolley 11 is guided by these rails 13.13a. moreover.

An automatic painting machine 14 such as a reciprocator and a painting robot is installed on the side of the rail 13.
4 is provided with a spray gun 15 that moves vertically and horizontally and sprays paint toward the object W to be painted.

Further, on both side walls 1a inside the exhaust chamber 4, this fil" water supply I having a mouth-shaped cross section along the longitudinal direction of the air chamber 4 is provided.
n! 16.16a are provided horizontally, and inside the water supply troughs 16, 168, flow plates 17.17a are provided that extend downward at 41 facing each other. And when painting my 1llll I single body W,
The water H is overflowed from this water supply t11I116, 16a and flows into the flow plate 17.1'7a to form a water film, and the paint mist is captured while making contact with the conditioned air containing paint mist discharged from the painting room 3. It is supposed to be done. Further, an exhaust duct 18 is connected to the exhaust chamber 4, and one end of the exhaust duct 18 is open to the atmosphere. An exhaust fan 19 is provided in the middle of the exhaust duct 18, and the exhaust fan 19 sucks in the conditioned air from the painting room 3 and discharges it to the outside.

In addition, in the part of the filter 5 above the automatic coating machine 14,
A shielding plate 20 is disposed, and one side of the shielding plate 20 is open to the air supply chamber 2 approximately at the center thereof.

An air supply duct 21 is provided, the other end of which is open to the painting room 3. A damper 22 is provided in the middle of the air supply duct 21, and the rotation of the damper 22 opens and closes the air passage of the air supply duct 21.

Further, at the bottom of the shielding plate 20, a cross-flow type blower 23 that generates an air curtain on both sides of the air supply duct 21 is provided.
, 23a are arranged in the longitudinal direction of the painting room 3, and below the screen 6, a blower 23b of the same type is provided at a position facing the blower 23.23a provided on the shielding plate 20.
23c is arranged in the longitudinal direction of the exhaust chamber 4.

The above-mentioned blowers 23, 23c, 23b, and 23c have a rotary body 24 and a rotary body 24, in which a plurality of blade bodies 24b are attached to the outer peripheral surface of two cylindrical bodies 24a in the longitudinal direction, as shown in FIGS. 3 and 4. , a support member 26 which rotatably supports this rotating body 24 by a shaft member 25, and in which a slit-shaped jet port 26a and an open air supply port 26b are formed in cooperation with the rotating body 24.

It consists of a motor 27 provided at the tip of a shaft member 25.

A blower 23 disposed at the bottom of the shielding plate 20
In this case, the air supply port 26b side is directed toward the lower screen 6,
The air outlet 26a side is directed toward the air supply duct 21, and the air supply port 26b side of the blower 23a is directed toward the air outlet 26a of the blower 23. In addition, the blower 23b disposed at the lower part of the bamboo basket 6 has the air supply port 26b side facing the blower 23b.
The air blower 23c is directed toward the air outlet 26a of the air supply port 2a, and the air outlet 26a side is directed toward the side qla.
The 6b side is directed toward the jet nozzle 26a of the blower 23b, and the jet nozzle 26a side is directed toward the air supply port 26b of the blower 23. As a result, each blower 23, 23a,
The rotary bodies 24 of 23b and 23c are rotated by the motor 27, and a part of the conditioned air in the coating station 3 is sucked through the air supply port 26b and ejected from the jet port 26a, creating an air curtain flow as shown by the arrow. is formed to surround the automatic coating machine 14.

In the coating booth for an automatic coating machine having the grooves as described above, the air supply fan 8. Air conditioner 9 and exhaust fan 19 operate. Outside air is introduced into the air conditioner 9 by the operation of the air supply fan 8, and water H is overflowed from the water supply gutter 16.16a of the air supply chamber 4 and flows out to the flow plate 17.17a, forming a water film. . The outside air introduced into the air conditioner 9 is then subjected to dust removal.

The air is then supplied to the air supply chamber 2 after being adjusted to a predetermined temperature and humidity. The conditioned air supplied to the air supply chamber 2 is as follows.

It passes through the filter 5 and is evenly supplied to the coating room 3 other than the area where the automatic coating machine 14 is installed.

Further, the object W to be painted on the trolley 11 that has been transported by the conveyor 10 is transported into the coating room 3 from the entrance thereof. When the object W to be coated is transported to an automatic coating machine 14 such as a reciprocator and a coating C°bot disposed on the side of the coating room 3, paint is sprayed by a spray gun 15. A coating is formed.

When painting the object W, the blower 23° 23a
, 23b, and 23c are rotated by a motor 27, and part of the conditioned air supplied from the air supply duct 21 and the conditioned air in the painting room 3 is sucked through the air supply port 26b and ejected from the jet port 26a. As a result, an air curtain flow as shown by the arrow is formed and the automatic coating machine 14 is surrounded. In addition, the air curtain flow is caused by blowers 23, 23a, 23b.
, 23c, and the formed air curtain flow is continuously formed to coat the object to be coated without involving the conditioned air in the coating room 3. . The space surrounded by the air curtain is always maintained at a positive pressure by air-conditioning air supplied from the air supply duct 21 as shown by the arrow. As a result, the air curtain flow does not collapse, and therefore, the paint mist floating in the painting room 3 is transferred to the automatic painting machine 1.
4 is prevented from entering the zone where it is installed.

Furthermore, paint mist generated in large quantities near the automatic coating machine 14 and paint mist floating in areas other than the vicinity of the automatic coating machine 14 are removed from the air-conditioned air that passes through the filter 5 from the air supply chamber 2 and is supplied to the head compartment 3. It passes through the screen 6 and is discharged into the exhaust chamber 4. and.

The conditioned air containing paint mist discharged into the exhaust chamber 4 overflows from the water supply level 16.16a and flows over the flow plate 17.17'a into a water film and the water H at the tip of the flow plate 17.17a. The paint mist is removed from the conditioned air by intense contact with the conditioned air, and the conditioned air from which the paint mist has been removed.

The exhaust fan 19 exhausts the air from the exhaust duct 18 to the outside.

As explained above, in the automatic coating machine disassembly booth of the present invention, a conveyor for transporting objects to be coated is laid in the longitudinal direction of the upper surface of the screen installed at the boundary between the coating room and the exhaust chamber. , an automatic coating machine is installed on the side of this conveyor, a blower is arranged so that this automatic coating machine is surrounded by an air curtain flow, and the inside of the air curtain flow surrounding the automatic coating machine is made to have positive pressure. Since the automatic coating machine can be surrounded by an air curtain flow, it is possible to significantly reduce the supply of conditioned air to the automatic coating machine installation zone.

Further, by reducing the supply amount of conditioned air, there is an effect that energy such as electricity and steam for air conditioning can also be reduced.

Furthermore, in the present invention, since the inside of the air curtain flow formed by the blower is under positive pressure, the air curtain flow does not collapse.

Shita force has the effect of preventing paint mist floating in the painting chamber from entering the installation zone of the automatic painting machine.

[Brief explanation of drawings]

Fig. 1 is a cutaway front view showing a painting booth for an automatic coating machine according to the present invention, Fig. 2 is a plan view taken along line I-I in Fig. 4 is a sectional view taken along line 1v-1y in FIG. 3, and FIG. 5 is a front view showing a conventional automatic coating booth cut away. 1...Painting booth 1a...Side Wall 2...Air supply room 3...Moe...Painting room 4... ...υlfC room 5...song Filter 6...Sound child 7...song Air supply duct 8...Air supply fan 9...song Air conditioner 10... Conveyor 11...
...Curved trolley 12...Dog 13,1
3a...Rail 14...Automatic painting machine 15...River...Spray gun 16.16a
・River...Water supply price 17.17a...Flow plate 18...
...Exhaust duct 19...Exhaust fan 20...Block plate 21...Curved air supply duct 22... Damper 23; 23a, 23b, 23c ·---------
Blower 24...Rotating body 24a...
・Cylindrical body 24b... Wing body 25...
...Shaft member 26... Support member 26a
...Blowout port 26b...Air supply port 27.
...Motor applicant Toyota Motor Corporation

Claims (1)

[Scope of Claims] The space within the painting booth is formed into three chambers, an air supply chamber, a painting chamber, and an exhaust chamber, sequentially from above, with a filter and a screen as boundaries, and the space is arranged at the boundary between the painting chamber and the exhaust chamber. A conveyor for conveying the objects to be coated is installed in the longitudinal direction of the upper surface of the screen, and an automatic coating machine is installed on the side of this conveyor. A painting booth for an automatic painting machine, characterized in that a blower is arranged so that the automatic painting machine is surrounded by an air curtain flow, and positive pressure is applied to the inside of the air curtain flow surrounding the automatic painting machine.