JPS60153967A - Painting booth with air flow velocity control apparatus - Google Patents

Abstract

PURPOSE:To control the supply amount of air to a painting chamber without loss, by providing a shielding member for regulating the passing area of conditioned air to the filter arranged in the side of the automatic painting region of the painting chamber and providing an air flow velocity sensor to the downsteam side of the filter. CONSTITUTION:At the time of painting of an article to be painted, air conditioned to predetermined temp. and humidity is supplied to a painting chamber 3 from an air supply chamber 2 through a filter 5. In this case, a shielding member 23 is arranged to the filter 5 in the side of the automatic painting region A of the painting chamber 3 and a part of conditioned air supplied to the air supply chamber 2 is blocked in the side of the automatic painting region A by the shielding member 23 and, as a result, conditioned air is supplied to the side of a manual painting region B in an increased amount. At this time, an air flow velocity of conditioned air is measured in the side of the automatic painting region A by an air flow velocity sensor 25 and the measured value is inputted to a controller 26 and, if there is difference between said value and a set value, an air supply fan 9 is driven to hold a predetermined supply amount.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a painting booth with a wind speed control device.

[Prior art]

Conventional Art 1 For example, a painting booth as shown in FIG. 5 is widely used when painting an automobile body while being continuously conveyed by a conveyor or the like.

In FIG. 5, reference numeral 51 is a one-piece booth formed in the shape of a tunnel, and the space inside this amusement booth 51 is an air supply chamber 52. A painting chamber 53 and an exhaust chamber 54 are formed in order, and 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 are separated from each other by a filter 55 that removes fine dust. It is divided using the bamboo shoot 56 as a boundary.

A conveyor and a rail (not shown) are laid in the center in the longitudinal direction on the upper surface of the eleventh child 56, and automatic coating machines 57 are arranged on both sides thereof.

Furthermore, this automatic painting machine 57 is equipped with a spray gun 58 for spraying paint onto the automobile body W.
A plurality of painting operators M are arranged downstream of the automatic painting machine 57, and perform correction painting on areas that cannot be painted by the automatic painting machine 57. And automatic painting machine 5
The zone where No. 7 is installed is designated as automatic painting area A.

The zone where the painting operator M is located is defined as a manual painting area B.

A partition plate 59 is provided in the exhaust chamber 54 at the boundary between the parts corresponding to the automatic painting area A and the manual painting area B of the painting room 53. 'b
It is divided into Filters 60a and 6ob are provided in the first exhaust chamber 54a and the second exhaust chamber 54b, respectively, to remove paint mist exhausted from the painting chamber 53.

Further, the first exhaust chamber 54a and the second tu of the exhaust chamber 54
An exhaust duct 61 is connected to each of the air chambers 54b, and two dampers 62a are installed in the middle of the exhaust duct 61.

62b and one exhaust fan 63 are provided.

An air supply duct 64 is connected to the air supply chamber 52, an air conditioner 65 is provided at the tip of 7C, and an air supply fan 66 and a damper 67 are provided on the downstream side of JC. It has become.

When painting the automobile body W in the painting room 53, a predetermined amount of air-conditioned air is always supplied to the air conditioner in order to promptly exhaust the scattered paint mist to the exhaust chamber 54 without adhering to the surface of the automobile body W. 65 to air supply duct 64. The air is passed through the air supply chamber 52 and the filter 55 and is evenly supplied to the automatic painting area A and the manual painting area B of the painting room 53, and a commensurate amount of exhaust air is supplied to the first exhaust chamber 54a of the exhaust chamber 54. and is discharged from the second exhaust chamber 54b.

Air flow from above to below the painting booth 51 is ensured.

However, in such a painting booth, the conditioned air supplied to the painting room 53 is uniformly supplied to the automatic painting area A and the manual painting area B, and the amount of air supplied is also equal to that of the manual painting area. The maximum supply amount is set in order to protect the painting worker M of B from the organic solvent generated when painting the automobile body W. As a result of this, the amount of air supplied to the automatic painting area A, which does not require protection from organic solvents, will be the same as that of the manual painting area B, and not only will the air conditioned air supplied to the automatic painting area A be wasted, but the air conditioning There is a problem that energy such as electricity and steam is consumed more than necessary.

[Purpose of the invention]

The present invention has been made in order to eliminate the above-mentioned problems, and its purpose is to provide a shielding member for adjusting the passage area of conditioned air to a filter disposed on the automatic painting area side of a painting room. To provide a painting booth with a wind speed control device that can control the amount of conditioned air supplied to a painting room and reduce the amount of conditioned air supplied by installing a wind speed sensor on the downstream side of the painting room.

[Structure of the invention]

In order to achieve the purpose of ``3'', the configuration of the painting booth with a wind speed control device according to the present invention is such that the space inside the booth is
An air supply chamber, a painting room, and an exhaust chamber are formed sequentially from above with the filter and the screen as boundaries, and an air supply duct is connected to supply conditioned air to the air supply chamber, and an air supply duct is installed in the middle of the air supply duct. A painting booth is provided with a fan and the painting room is divided into an automatic painting area and a manual painting area, and the painting booth is equipped with an automatic coating of a filter arranged at the boundary between the air supply room and the painting room. A shielding member that adjusts the passage area of conditioned air is provided at a location corresponding to the area, and a wind speed sensor is provided downstream of this filter.

Furthermore, a controller is installed outside the painting booth, and the input end of this controller is connected to a wind speed sensor.

The output side is connected to the air supply fan of the air supply duct.

[Action of the invention]

In such a painting booth equipped with a wind speed control device.

When painting an object to be painted, conditioned air adjusted to a predetermined temperature and humidity is supplied from the air supply chamber to the coating room through a filter. At that time, a shielding member is installed on the filter on the automatic painting area side of the painting room.

Among the conditioned air supplied to the air supply room, a part of the conditioned air supplied to the automatic painting area is blocked by the shielding member,
An increased amount of the conditioned air is supplied to the manual painting area. As a result, the amount of conditioned air supplied to the automatic painting area of the painting room decreases, and the amount supplied to one manual painting area increases, making it possible to reduce the total amount of conditioned air supplied.

Second, the wind speed of the conditioned air supplied to the painting room is measured by a wind speed sensor installed on the automatic painting area side of the painting room, and the measured wind speed value is input to the controller. . The controller then compares the introduced wind speed value with a preset wind speed setting, and if there is a discrepancy, a signal is sent to the air supply fan to correct the discrepancy.

The conditioned air supplied to the painting room is adjusted to a predetermined amount.

〔Example〕

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

Fig. 1 is a side cross-sectional view of a painting booth with wind speed control coating according to the present invention, Fig. 2 is a front view taken along line It-11 in Fig. 1, and Fig. 3 is a seal 1 of Fig. 1. FIG. 4 shows an enlarged perspective view of the shielding member used in the present invention.

[Configuration of Example]

In Figures 1 to 4, reference numeral 1 denotes a paint booth formed in the shape of a tunnel, and the space of this paint booth 1 is connected from above to an air supply chamber 2. The painting chamber 3 and the exhaust chamber 4 are formed in order, and the air supply chamber 2 and the painting chamber 3 are separated by a filter 5 for removing fine dust, and the painting chamber 3 and the exhaust chamber 4 are separated by a filter 5 for removing fine dust. The area is divided with Kanoko 6 as the boundary. Both longitudinal ends of the painting chamber 3 are open, with one end serving as an inlet 3a and the other serving as an outlet 3b. However, the air supply chamber 2 and exhaust chamber 4 are closed.

Further, an air supply duct 7 is connected to the air supply chamber 2, and a nitrogen conditioner 8 is installed at the tip of the air supply duct 7, and a nitrogen conditioner 8 is provided at the tip of the air supply duct 7, and a centrifugal fan or the like is installed downstream of the air supply duct 7 to make the supply air flow rate variable. An air supply fan 9 is provided.

A conveyor 10 is installed in the center of the painting room 3 in the longitudinal direction, and on this conveyor 10 there is also a trolley on which an automobile body W, which is an object to be painted, is placed and transported. A plurality of dogs 12 are provided to be hooked to the dog 11.

On both sides of the conveyor 10, rails 13a and i3b having a U-shaped cross section are laid, and the trolley 11 is guided by these rails 13a and 13b. Automatic painting machines 14a and 14b, such as painting robots, are installed on the sides of both rails 13a and 13b, and at their tips move vertically and horizontally toward the automobile body W. Spray guns 15a and 15b for spraying paint are provided. Further, a plurality of painting operators M are arranged downstream of the automatic painting machines 14a and 14b, and perform correction painting on parts that cannot be painted by the automatic painting machines d14a and 14b. And automatic coating machine 14a,
The zone where 14b is arranged is designated as automatic painting area A,
The zone where the painting operator M is located is defined as a manual painting area B.

Also, a partition plate 16 is provided in the air bleed chamber 4 at the boundary between parts corresponding to the automatic painting area A and manual painting area B of the painting room 3, and separates the first exhaust chamber 4a and the second exhaust chamber 4b. It is divided into. Matoko 1 and both exhaust chambers 4a.

4b, filters 17a and 17b are disposed over the entire width, and paint mist discharged from the painting chamber 3 is removed.

Further, an exhaust duct 18 is connected to the first υ air chamber 4a and the second exhaust chamber 4b, and in the middle thereof, two dampers 19a, 19b, one paint mist removing device 20, and one exhaust fan 21 are connected. is provided.

Also, a filter 5 that separates the air supply chamber 2 and the painting chamber 3 is provided.
As shown in the enlarged perspective view of FIG.

A wire mesh 22 is arranged on the lower surface of the wire mesh 22.
The filter 5 is reinforced by. Shielding members 23 are provided on the upper and lower surfaces of the filter 5 at a portion corresponding to the automatic painting area A where the automatic painting machines 14a and 14b are installed, for adjusting the area through which the conditioned air passes through the filter 5.
is installed.

As shown in FIGS. 3 and 4, the shielding member 23 is formed in a lattice shape using a plasdec material having a rectangular cross section, and is disposed so as to face the upper and lower surfaces with the filter 5 in between. ing. This shielding member 23 is
It is divided into appropriate blocks, and the fixing metal fittings 24 at the ends are attached.
When replacing the filter 5, it can be separated from the surface of the filter 5 with a single touch. In addition, the filter 5 is compressed at the abutting part of the shielding member 23, and the area through which the conditioned air passes is about 60%. It is supplied to the painting room 3 through the filter 5 in the space 23a of the shielding member 23 and the unprovided portion.

A wind speed sensor 25 is provided on the downstream side of the filter 5 on the automatic painting area A side, and the conditioned air passing through the filter 57i on which the shielding member 23 is provided is supplied to the painting room 3. The wind speed is ill! It is determined.

A controller 26 is installed outside the painting booth 10, and the input end of the controller 26 is connected to the output side of the wind speed sensor 25 installed in the automatic painting area A by a conductor 27a. At the same time, the output side is connected to a driver 28 of the air supply fan 9 provided in the air supply duct 7 by a conductive wire 27b. Then, the controller 26 shows that the wind speed of the conditioned air on the automatic painting area A side is 0.3 m/sec, and the wind speed of the air conditioned air on the manual painting area B side is Q, 5772/see.
The rotational speed of the air supply fan 9 is set in advance so that the rotation speed of the air supply fan 9 is controlled so that.

[Effect of the embodiment]

In the painting booth with the wind speed control device configured as described above, the air supply fan 9.
Air conditioner 8 and exhaust fan 21 operate. Outside air is introduced into the window air conditioner 8 by the operation of the air supply fan 9.

Then, the outside air is introduced into the air conditioner 8 and dust is removed.
and a given temperature.

The air is adjusted to humidity and supplied to the air supply chamber 2.

It passes through the filter 51t and is supplied to the painting chamber 3.

At this time, a grid-shaped shielding member 23 is disposed on the filter 5 on the automatic painting area A side of the painting room 3.

The conditioned air supplied to the air supply chamber 2 is supplied to the painting chamber 3 after passing through the filter 5 in the space $ 23 a formed in the shielding member 23 and the area where the shielding member 23 is not provided. Of the t conditioned air supplied to the air supply chamber 2, part of the conditioned air supplied to the automatic painting area A is blocked by the shielding member 23, and the amount of conditioned air from jC is increased to the manual painting area B. Supplied. As a result, the amount of conditioned air supplied to the automatic painting area A of the painting room 3 decreases.

The supply amount to the manual painting area B side increases, and the overall supply amount of conditioned air is reduced. In addition, the space 2 of the shielding member 23
The conditioned air passing through 3a is prevented from diffusing at the compressed part of the filter 5, and is supplied to the painting room 3 with directionality, allowing the paint spray generated on the automatic painting area A side to be quickly exhausted. It is possible to prevent the occurrence of painting defects such as 9-color staining.

The truck is transported by the conveyor IO.
The car body W of i is conveyed from the interior 3a of the painting room 3 to the inner wall S. Automobile body W is coated in the painting room 30] and automatic painting machines 14a are disposed on both sides of the painting room 30.

Once transported to +li of 14b, paint is sprayed by spray guns 15a and 15b to form a coating film. Then, the car body W is sprayed with paint while being conveyed by the conveyor lO, and the painting worker M performs correction painting of the parts that cannot be painted with the automatic painting machines 14a and 14b. 3 is conveyed to the next process from the outlet 3b.

On the other hand, the paint that was not applied to the car body W.

The paint mist is passed through the screen 6 together with the conditioned air supplied to the painting room 3, and is emitted into the first exhaust chamber 4a and the second exhaust chamber 4b. Then, the exhaust air containing the paint mist is exhausted to the exhaust chambers 4a and 4b of the nine cars, and is filtered through the filter 1.
Paint mist is removed when passing through 7a and 17b.

Then, the exhaust air from which the paint mist has been removed is exhausted to the exhaust duct 18 by the exhaust fan 21, and
Fine paint mist is removed by the paint mist removal device 20 and discharged outdoors.

The wind speed of the conditioned air supplied into the painting room 3 is measured by the wind speed sensor 25 at all times.

The measured wind speed value is introduced into the controller 26.

Then, the controller 26 compares the introduced wind speed value with a preset wind speed value. For example, when the wind speed value of the conditioned air is set,
If it is less than 3 nt/sec, the air supply fan 9
A signal is sent to the drive unit 28, and the rotation speed of the air supply fan 9 is controlled to adjust the supply amount to a set value so that the amount of conditioned air supplied into the painting room 3 is increased. Ru.

Also, the wind speed value of the conditioned air is set and the wind speed value is 0.
, 3 m/sec, a signal is sent to the drive unit 28 of the air supply fan 9, and the rotation of the air supply fan 9 is decreased so that the amount of conditioned air supplied into the painting room 3 is decreased. The number is controlled and the supply amount is set and adjusted to the t value.

In the present invention, the material of the shielding member 23 is described as plastic, but it may be made of metal materials such as steel plate, aluminum plate, copper plate, wood, cardboard, etc.

〔Effect of the invention〕

As explained above, in the painting booth with the wind speed control device of the present invention, air conditioning is installed in the area corresponding to the automatic painting area of the filter disposed at the boundary between the air supply room and the painting room of the painting booth. A shielding member is provided to adjust the air passage area.
Therefore, the conditioned air that passes through the space in the shielding member is prevented from dispersing at one compressed part of the filter, and can be supplied to the painting room with directionality, reducing paint mist generated in the automatic painting area. This has the effect of being able to quickly exhaust the air to the exhaust chamber and preventing the occurrence of paint defects such as color mixing due to paint mist.

In addition, in the present invention, a shielding member for adjusting the passage area of the conditioned air is provided on the filter disposed on the automatic painting area side of the painting room, and a wind speed sensor is provided on the downstream side of the + filter, and the wind speed sensor is provided on the downstream side of the positive filter. The amount of conditioned air supplied to the painting room is adjusted based on the measured value of the sensor, and a portion of the conditioned air supplied to the air supply room is supplied to the automatic painting area. is blocked by the shielding plate, and the conditioned air can be supplied in increased quantities to the manual painting area, and the amount of conditioned air supplied can be controlled by the wind speed sensor control system.

This has the effect of significantly reducing the overall supply amount of conditioned air.

Furthermore, 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 side sectional view of a painting booth with a wind speed control device according to the present invention. FIG. 2 is a front view taken along line 11 of FIG. 1. FIG. 3 is a plan view taken along the line l1l-In in FIG. 1. FIG. 4 is an enlarged perspective view of a shielding member used in the present invention. FIG. 5 is a side sectional view of a conventional painting booth. l...Painting booth, 2...Air supply room, 3...Painting room. 4...Exhaust chamber, 5...Filter, 6...Bamboo shoots. 7...Air supply duct, 8...Air conditioner. 9...Air supply fan, 14a, 14b...Automatic painting machine. 16... Partition plate, 17a, 17b... Filter 18... Exhaust duct, 20... Paint mist removal device. 21...Exhaust fan, 22...Wire mesh. 23... Shielding member, 25... Wind speed sensor. 26...Controller, 28...Driver. A: Automatic painting area, B: Manual painting area Applicant: Toyota Motor Corporation s20

Claims (1)

[Claims] The space inside the painting booth is formed into an air supply room, a painting room, and an exhaust room from above, with the filter and the screen as boundaries, respectively, and an air supply duct is connected to supply conditioned air to the air supply room. This is a painting booth in which an air supply fan is installed in the middle to divide the painting room into an automatic painting area and a manual painting area, and the painting booth is provided at the boundary between the air supply room and the painting room of this mold bag booth. A shielding member for adjusting the passage area of the conditioned air is provided at the part (+1) corresponding to the automatic coating area of the filter provided, and a wind speed sensor is provided downstream of this filter, and further, A controller is installed outside the painting booth, and the input side of the controller is connected to the wind side sensor, and the output side is connected to the air supply of the air supply duct I. A painting booth with a wind speed control device.