JPS646934Y2 - - Google Patents

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.

Conventionally, for example, in a painting booth for an automatic paint machine that continuously conveys and paints automobile bodies using a conveyor or other conveyance device, as shown in FIG. The air supply chamber 52 and the painting chamber 53 are separated by a filter 55 that removes fine dust, and the painting chamber 53 and the exhaust chamber 54 It is separated from the ``Kanoko'' by 56. A conveyor 57 is provided on the upper surface of the screen 56 in the painting room 53 in the longitudinal direction.
is laid, and rails 58, 58a are laid on both sides of this conveyor 57. On the sides of the rails 58, 58a, there are automatic painting machines 60, 60 having spray guns 59, 59a that move vertically and spray paint toward the automobile body W.
a is arranged. Further, water supply gutters 61, 61 are provided on both side walls 54a of the exhaust chamber 54 in the longitudinal direction.
a is arranged horizontally, and this water supply gutter 6
1, 61a are provided with flow plates 62, 62a extending downward on mutually opposing sides. The side wall 5 of this exhaust chamber 54
An exhaust duct 64 in which an exhaust fan 63 is provided is connected to 4a. Furthermore, the air supply chamber 5
An air supply duct 65 is connected to the ceiling wall 52a of No. 2, and an air conditioner 66 is connected to this air supply duct 65.
and an air supply fan 67.

When painting an automobile body W, conditioned air adjusted to a predetermined temperature and humidity by an air conditioner 66 is supplied to the air supply chamber 52 by an air supply fan 67; The conditioned air is uniformly supplied to the painting chamber 53 through a filter 55, and together with the conditioned air, paint mist that has not been applied to the automobile body W is discharged to the exhaust chamber 54 by an exhaust fan 63. Exhaust chamber 54
The paint mist is removed from the conditioned air by contacting the water H flowing on the flow plates 62, 62a.

However, in such a painting booth for an automatic painting machine, the spray guns 59, 59 of the automatic painting machine 60, 60a, etc.
The amount of paint sprayed from 59a is adjusted, for example, if the amount of paint sprayed is large,
The amount of paint mist that scatters in the painting chamber 53 without adhering to the surface of the automobile body W increases, and when the amount of paint sprayed is small, the amount of paint mist that scatters in the painting chamber 53 also decreases. Nevertheless, the amount of conditioned air supplied into the painting room 53 is set to such a supply amount that a large amount of paint mist is generated.

Therefore, when the amount of paint mist generated is small or when no paint is applied, the air conditioner 6
Not only is the conditioned air supplied from the air conditioner 6 wasted, but also there is a problem in that energy such as electricity and steam used for air conditioning is consumed more than necessary.

This invention was devised to solve the above-mentioned problems, and its purpose is to change the amount of air conditioned air supplied to the painting room in conjunction with the operation of the automatic painting machine. An object of the present invention is to provide a coating booth for an automatic coating machine that can reduce the amount of air conditioned air supplied.

The above purpose of this invention is to reduce the space inside the painting booth.
An air supply chamber, a painting chamber, and an exhaust chamber are formed sequentially from above with the filter and the screen as boundaries, and an air supply duct having an air conditioner and an air supply fan is connected to the air supply chamber, and An automatic coating machine is provided in the painting room, and the exhaust chamber is provided with a filter and an exhaust duct having an exhaust fan, and the exhaust chamber is provided with an exhaust duct downstream of the filter located at the boundary between the air supply chamber and the painting room. A first wind speed sensor is provided on the side, and a second wind speed sensor is provided on the downstream side of the filter disposed in the exhaust chamber.
A first control device that controls the air supply amount of the air supply fan, a second control device that controls the exhaust amount of the exhaust fan, and an operating device that instructs the operation of the automatic coating machine,
The first wind speed sensor and the output side of the operating device are connected to the input side of the first control device, and the second wind speed sensor and the output side of the operating device are connected to the input side of the second control device. This is achieved by a coating booth for automatic coating machines.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a cutaway front view of a coating booth for an automatic coating machine according to the present invention. In FIG. 1, reference numeral 1 denotes a paint booth formed in the shape of a tunnel, and the space inside this paint booth 1 is sequentially formed into three chambers: an air supply chamber 2, a coating chamber 3, and an exhaust chamber 4. The air supply chamber 2 and the painting chamber 3 are divided by a filter 5 for removing fine dust, and the painting chamber 3 and the exhaust chamber 4 are divided by a screen 6 as a boundary.

An air supply duct 7 is connected to the air supply chamber 2, and an air supply fan 8 and an air conditioner 9 are connected to the air supply duct 7. Further, a conveyor 10 is installed on the upper surface of the screen 6 of the painting room 3 in the longitudinal direction of the center of the painting room 3, and an automobile body W, which is an object to be painted, is placed on this conveyor 10. A plurality of dogs 12 are provided to be hooked to a trolley 11 for transporting. and,
On both sides of this conveyor 10 are rails 13, 13a.
are laid, and the trolley 11 is guided by these rails 13, 13a. Furthermore, an automatic painting machine 14 such as a reciprocator and a painting robot is disposed on the sides of both rails 13, 13a, and this automatic painting machine 14 moves vertically and horizontally to paint the automobile body W. A spray gun 15 is provided for spraying paint toward the vehicle.

Further, a wide filter 16 is disposed below the screen 6 disposed at the boundary between the painting chamber 3 and the exhaust chamber 4, and the filter 16 covers the entire exhaust chamber 4. Paint mist contained in the conditioned air discharged from 3 is captured. Further, an exhaust duct 17 is connected to the exhaust chamber 4, and one end of the exhaust duct 17 is open to the atmosphere.
An exhaust fan 18 is provided in the middle of the exhaust duct 17, and the exhaust fan 18 sucks in the conditioned air from the painting room 3 and discharges it to the outside.

Further, a first wind speed sensor 1 is provided on the downstream side of the filter 5 disposed at the boundary between the air supply chamber 2 and the painting chamber 3.
9 is provided, and a second wind speed sensor 20 is provided downstream of the filter 16 disposed in the exhaust chamber 4.

In addition, an air supply duct 7 is installed outside the painting booth 1.
a first control device 21 that controls the air supply amount of the air supply fan 8 provided in the exhaust duct 17; and a second control device 21 that controls the exhaust amount of the exhaust fan 18 provided in the exhaust duct 17.
A control device 22 and an operating device 23 for instructing the operation of the automatic coating machines 14, 14a are provided. The input side of the first control device 21 is connected to conductors 24 and 2.
4a, the first wind speed sensor 19 and the operating device 23
The output side is connected to the motor 8a of the air supply fan 8 by a conductor 24b. Further, the input side of the second control device 22 is connected to the respective output sides of the second wind speed sensor 20 and the operating device 23 through conductive wires 24c and 24d, and the output side is connected to the exhaust fan 18 through a conductive wire 24e. It is connected to the motor 18a. Further, the input side of the operating device 23 is connected to the automatic coating machines 14 and 1 disposed in the coating room 3 through a conductor 24f.
4a.

In the coating booth for an automatic coating machine configured as described above, the air supply fan 8, air conditioner 9, and exhaust fan 18 are installed at the same time as the coating booth 1 starts operating.
is activated. By operating the air supply fan 8, outside air is introduced into the air conditioner 9, and is supplied to the air supply chamber 2 after being cleaned of dust and adjusted to a predetermined temperature and humidity. The conditioned air supplied to the air supply chamber 2 is rectified, passes through a filter 5, and is evenly supplied to the painting chamber 3.

Further, the automobile body W on the trolley 11 that has been transported by the conveyor 10 is carried into the painting room 3 from the entrance thereof. The automatic painting machine 14, in which the automobile body W is disposed on both sides of the painting room 3,
When transported to the location 14a, paint is sprayed by the spray guns 15, 15a to form a coating film. In this way, the automobile body W is sprayed with paint while being conveyed by the conveyor 10 to complete the painting process, and is then conveyed from the exit of the painting chamber 3 to the next process.

When painting the automobile body W, the painting room 3
The first wind speed sensor 19 and the exhaust chamber 4 provided in
The flow velocity of the conditioned air flowing down into the painting room 3 and the exhaust chamber 4 is detected by a second wind speed sensor 20 provided in transmitted to device 22. On the other hand, the operating device 23 instructs the automatic coating machines 14, 14a to operate, and the instruction signal is transmitted to the first control device 21 and the second control device 22.
are transmitted to each of them. In the first control device 21 and the second control device 22, settings are made in advance in response to the detection signals sent from the first wind speed sensor 19 and the second wind speed sensor 20 and the painting operation of the automatic painting machines 14 and 14a. operating device 23
A comparison is made with an instruction signal transmitted from.

Then, an electric signal is sent from the first control device 21 to the motor 8a of the air supply fan 8, and the rotation speed of the air supply fan 8 is controlled, and the supply amount of conditioned air from the air conditioner 9 is controlled. be adjusted. On the other hand, the second
From the control device 22, the motor 1 of the exhaust fan 18 is
An electric signal is sent to 8a to control the rotation speed of the exhaust fan 18 and adjust the amount of air conditioned air exhausted from the exhaust duct 17.

For example, if the amount of paint sprayed by the spray guns 15, 15a of the automatic painting machines 14, 14a is small depending on the painting area of the automobile body W, the motors 8a and 1 of the air supply fan 8 and the exhaust fan 18
The rotational speed of 8a is reduced, and the amount of conditioned air supplied to painting chamber 3 and conditioned air discharged from exhaust chamber 4 is reduced. On the other hand, automatic coating machines 14, 14a
When the amount of paint sprayed by the spray guns 15, 15a is large depending on the part to be painted on the automobile body W, the rotational speed of the motors 8a and 18a of the air supply fan 8 and the exhaust fan 18 is increased, and The amount of conditioned air supplied to the exhaust chamber 4 and the amount of conditioned air discharged from the exhaust chamber 4 are increased.

The paint mist scattered in the painting room 3 is
The conditioned air supplied from the air supply chamber 2 passes through the screen 6 and is discharged to the exhaust chamber 4. and,
When the conditioned air containing paint mist discharged into the exhaust chamber 4 passes through the filter 16, the paint mist is removed from the conditioned air, and the conditioned air from which the paint mist has been removed is passed through the exhaust fan 18. It is exhausted to the outside from the exhaust duct 17.

As explained above, in the painting booth for an automatic painting machine of the present invention, the amount of air conditioned air supplied from the air conditioner to the painting room is changed in conjunction with the painting operation of the automatic painting machine, for example. , If the amount of paint sprayed from the automatic painting machine is large and there is a lot of paint mist scattering in the painting room, increase the air supply amount of the conditioned air, so that the amount of paint sprayed from the automatic painting machine is small and the paint mist is scattered in the painting room. When there is little scattering of paint mist in the room, the amount of conditioned air supplied to the painting room is reduced, allowing the air to pass through the filter from the air supply room and be evenly supplied to the entire painting room. This has the effect of significantly reducing the supply amount of conditioned air.

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

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of a coating booth for an automatic coating machine according to the present invention, and FIG. 2 is a cutaway front view of a conventional coating booth for an automatic coating machine. 1... Painting booth, 2... Air supply room, 3... Painting room, 4... Exhaust room, 5... Filter, 6... Bamboo shoots, 7... Air supply duct, 8... Air supply fan, 8a
...Motor, 9...Air conditioner, 10...Conveyor, 11...Dolly, 12...Dog, 13, 13a
...Rail, 14,14a...Automatic painting machine, 1
5, 15a...Spray gun, 16...Filter, 17...Exhaust duct, 18...Exhaust fan,
18a...Motor, 19...First wind speed sensor, 2
0...Second wind speed sensor, 21...First control device,
22... Second control device, 23... Operating device, 2
4, 24a, 24b, 24c, 24d, 24e,
24f... conductor.

Claims (1)

[Scope of utility model registration request] The space inside the painting booth is formed into three rooms sequentially from above, an air supply chamber, a painting room, and an exhaust chamber, with the filter and the screen as boundaries, respectively, and the air supply chamber has an air conditioner and an air supply fan. An automatic coating machine is provided in the painting chamber, and an exhaust duct having a filter and an exhaust fan is provided in the exhaust chamber, and the exhaust duct is installed at the boundary between the air supply chamber and the painting chamber. A first wind speed sensor is provided downstream of the filter installed in the exhaust chamber, and a second wind speed sensor is installed downstream of the filter installed in the exhaust chamber. A first control device for controlling the exhaust amount of the exhaust fan, a second control device for controlling the exhaust amount of the exhaust fan, and an operation device for instructing the operation of the automatic painting machine are disposed, and a first wind speed sensor is provided on the input side of the first control device. A painting booth for an automatic painting machine, characterized in that a second wind speed sensor and an output side of the operating device are connected to the input side of the second control device.