JP2001170529A - Coating booth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rationally improve the operation form of an air supply and exhaust means in a stop time zone wherein an object to be coated is stopped in a coating partial region to still more conserve energy. SOLUTION: A feed means T for intermittently feeding an object to be coated so as to stop the same in coating partial regions Za is provided and air passage preventing means 2 for preventing the flow of air through the coating partial regions Za are provided to both end parts of the coating partial regions Za. Air supply and exhaust means E, S are constitutred so as to enable to regulate the supply and discharge amounts of air individually at every coating partial regions Za and a work data issuing means 3A for issuing work data, which shows whether or not coating work is performed in a stop time zone wherein the object to be coated is stopped in the coating partial regions Za, at every coating partial regions Za corresponding to the coating partial regions Za is provided and a control means 3 controlling the air supply and exhaust means E, S on the basis of the issued data of the work data issuing means 3A so as to reduce the supply and discharge amounts of air during non-coating work as compared with those during coating work in the coating partial regions Za is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a coating work area in which a plurality of coating sub-areas are juxtaposed in a direction in which the coating sub-areas are arranged in a state where an object to be coated is stopped at the coating sub-areas. Conveying means for intermittently conveying, and supply / exhaust means for individually supplying / exhausting each of the coating partial areas are provided, and the coating operation is performed while the object to be coated is stopped in the coating partial area. About the painted booth.

[0002]

2. Description of the Related Art In such a coating booth, an object to be coated is intermittently conveyed to a plurality of sub-areas while being sequentially stopped, and in each of the sub-areas, coating is performed on a stopped object. (Hereinafter, sometimes referred to as a tact transfer type coating booth), and while continuously transferring the object to be coated over a plurality of coating partial areas, in each coating partial area,
As an example, there are the following advantages as compared with a method of coating a moving object (hereinafter, may be referred to as a continuous transfer type coating booth). That is, after painting,
It is necessary to stabilize the coating film by evaporating the solvent, but in the tact transfer type painting booth, it is only necessary to stop the object to be coated during the time required for solvent evaporation, so the continuous transfer type coating booth In comparison, the length of the painting work area can be reduced.

Conventionally, in such a tact transfer type coating booth, while the conveyor is being conveyed and the object is being moved, all the coating sub-areas are more stationary than when the object is stopped. Also, the air supply / exhaust means is controlled so that the air supply / exhaust amount is reduced to save energy (for example,
Japanese Patent Publication No. 4-78352).

[0004]

By the way, the length of the stop time period in which the object is stopped in the coating partial area is constant in all the coating partial areas. In each case, different parts of the work are painted or painted with different painting machines, so each painting area has a different length of painting work in the stop time zone. During the stop time, there is a non-working state in which the painting work is not performed. Also, when the production amount is reduced, when the objects to be coated are conveyed in a row by the conveying means, there may be a case where the objects to be coated are not in some places, that is, in a so-called thinned state, in such a case, the stop Even during the time period, a state in which the object to be coated does not exist in the coating partial area may sometimes occur. Then, in such a coating booth, it is determined whether or not the object to be coated is present in the coating partial area during the stop time zone, and only when the object to be coated is present, the coating operation is performed. If there is no object to be painted in the painting area, there is no work for the entire length of the stop period.

[0005] However, in the conventional painting booth, the supply / exhaust means is operated so as to supply / exhaust at a constant supply / exhaust amount during the stop period regardless of whether the painting operation is being performed or not. When you are not painting during the time,
Energy related to air supply and exhaust is wasted, and there is still room for improvement in energy saving.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to rationally improve the operation mode of the air supply / exhaust means in a stop time zone in which a workpiece is stopped in a coating area. In order to further save energy.

[0007]

Means for Solving the Problems [Invention according to claim 1]
The characteristic configuration according to claim 1, wherein the air supply / exhaust means is provided at each of both ends in the arrangement direction in the coating partial area, for preventing air from flowing in and out of the coating partial area. The means is configured such that the supply / exhaust amount can be adjusted individually for each of the coating partial areas, and for each of the coating partial areas, a stop time zone in which the object is stopped in the coating partial area. A work information issuing means for issuing work information as to whether or not a painting operation is being performed for each of the painting partial areas, and performing a painting operation in each of the painting partial areas based on the issuing information of the work information issuing means. If not, control means for controlling the air supply / exhaust means is provided so that the air supply / exhaust amount is smaller than during the painting operation. According to the characteristic configuration of the first aspect, in the stop time zone, when the painting operation is not being performed (hereinafter, sometimes referred to as non-working), the supply / exhaust air amount is smaller than during the painting operation. Then, the supply / exhaust means is controlled. The pressure balance between the painting area and the adjacent area is adjusted by increasing or decreasing the air supply and exhaust volume for each painting area, depending on whether painting is being performed or not being performed during the stop time. Even if there is a slight deviation, the air blocking means prevents the flow of air in the area between the coating partial area and the adjacent partial area, so that the air between the coating partial area and the adjacent partial area can be prevented from flowing between the coating partial area and the adjacent partial area. It is possible to prevent problems caused by the passage of the air in the region, for example, problems such as color cast. Incidentally, the supply / exhaust air amount during non-working is set to, for example, the minimum supply / exhaust air amount necessary for ventilating the painting area.
Therefore, while preventing the flow of air in the area between the coating sub-area and the adjacent sub-area, each coating sub-area has a lower operating time during the stop time than during the painting operation. Also reduce the air supply / exhaust volume to prevent problems caused by the flow of air inside the area between the coating area and the adjacent area, and to reduce the air supply / exhaust in the coating area. Energy consumption can be reduced, and energy saving can be effectively promoted.

In the case where an object to be coated is transported in a thinned state in order to reduce the production amount, when the object to be coated is not present in the coating partial area, the work is stopped during the entire length of the stop period. The supply / discharge amount is adjusted to decrease. In addition, when the production amount is reduced and adjusted, the intermittent conveyance by the conveyance unit may increase the stop time zone. In such a case, the stop time zone is increased for the production amount decrease adjustment. In such a case, the non-working time becomes longer as the stop time period becomes longer, and the supply / exhaust air amount is adjusted to be reduced while the non-working time is being made. Therefore, energy can be saved according to the adjustment of the production amount.

The invention according to claim 2 is characterized in that the water supply means for watering the air supplied by the air supply / exhaust means to the coating partial area is provided for each of the coating partial areas. The control unit is configured to adjust the water supply amount separately for each of the coating sub-regions in accordance with the increase / decrease adjustment of the supply / exhaust amount for each of the coating sub-regions by the supply / exhaust unit. The present invention is configured to control the watering means so as to increase or decrease the amount of water. According to the characteristic configuration of the second aspect, the supply / exhaust means is sprinkled with the air supplied to the coating sub-area by the water sprinkling means for purifying the air supplied to the coating sub-area. The amount of water spray is increased or decreased for each coating partial area in accordance with the increase or decrease in the amount of supply / exhaust by the supply / exhaust means. Therefore, if it is configured to spray water to the air supplied to the painting area for purification or the like,
The amount of water spray is also adjusted in accordance with the increase / decrease of the supply / exhaust air amount for each coating partial area, so that the energy consumption related to water spray can be reduced, so that further energy saving can be achieved. .

According to a third aspect of the present invention, there is provided a fuel cell system according to the third aspect of the present invention, wherein: the coating partial area; and a partial area in the coating work area which is separated from the coating partial area by the ventilation preventing means. Air flow detecting means for detecting the flow of air over the air is provided, and the control means adjusts the supply / exhaust amount of the coating partial area so that the air flow detecting means does not detect the flow of air. The configuration is such that the supply / exhaust means is controlled. According to the characteristic configuration of the third aspect, the supply / exhaust amount of the coating partial area is adjusted such that the ventilation detecting means does not detect the flow of air over the coating partial area and the adjacent partial area. . In other words, even if ventilation prevention means is provided in order to prevent the flow of air in the area between the coating partial area and the adjacent partial area, the ventilation prevention means is constituted by, for example, an opening / closing door. In such a case, the opening / closing door is opened and closed when the object to be coated is transferred from the coating partial area to the adjacent partial area. that time,
Since the pressure is balanced between the coating area and the adjacent area, the flow of air in the area between the coating area and the adjacent area can be suppressed. Accordingly, it is possible to provide a more preferable specific configuration in terms of preventing problems caused by the flow of air in the region between the coating partial region and the adjacent partial region.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. The painting booth has a tunnel-like painting work area 1 divided into four sub-areas Z arranged in a row, and a workpiece w (an automobile body in the present embodiment) is stopped in each sub-area Z. A floor-mounted tact-type conveyor T that intermittently conveys in the direction in which the partial areas Z are arranged, an air supply device S and an exhaust device E that individually supply and exhaust air for each partial area Z, and a control that controls various controls of the painting booth. It is provided with a device 3 and the like. Conveyor 2
Is configured such that the objects to be coated w are conveyed in a row at a pitch at which one object to be coated w exists in each of the four partial areas Z.

The four sub-zones Z are, from the upper side to the lower side in the conveying direction of the object to be coated on the conveyor T, a sub-area Za for a top coat base, a sub-zone Zb for a flash-off, and a clear area Zb for a top coat clear. And a film-forming partial area Zb for setting. Each of the coating sub-regions Za is provided with a coating machine 12 for coating an object to be coated w. In the film-regulating partial area Zb, the coating solvent is evaporated from the coating film applied in the coating area Za on the better side to prepare the coating film.

The adjacent partial areas Z are separated by an openable and closable door 2 as a ventilation preventing means so as to prevent the flow of air in the area between the adjacent partial areas Z. . Further, the entrance and exit of the coating work area 1 are also partitioned by the door 2.

A ceiling filter 4 is provided on the ceiling of the coating work area 1.
On the upper surface side (windward side) of the ceiling filter 4, an air supply chamber 6 partitioned by partition walls 5 corresponding to each partial area Z is formed, and air supply in each of the coating partial areas Za is performed. In the upper part of the chamber 6, there is provided a plenum chamber 7 partitioned corresponding to each of the coating partial areas Za. From each plenum chamber 7 to the corresponding air supply chamber 6,
Air is supplied through the bag filter 8. The floor of the coating work area 1 is formed by a grid floor 9, and below the grid floor 9, an air discharge chamber 11 partitioned by a partition wall 10 corresponding to each partial area Z is formed.

That is, in each partial area Z, the ceiling filter 4
The air is supplied from the corresponding air supply chamber 7 into the partial area Z through the corresponding air supply chamber, and the air in the area is exhausted from the corresponding air discharge chamber 11 through the lattice floor in parallel with the air supply chamber 7. , And quickly remove paint solvent vapors and dust from the area.

In each of the partial zones Z, a pair of anemometers 13 whose detection directions are set to be opposite to each other in the conveying direction of the article to be coated are provided.
The inlet and the outlet of the partial area Z are distributed and arranged.
A ventilation detecting means for detecting a flow of the air in the area between the two (hereinafter, sometimes referred to as a lateral flow) is configured.

Next, the conveyor T will be described.
An endless chain 17 in which engaging portions 16 of the carriage 14 for mounting an article to be engaged with the engaged portions 15 are attached at predetermined intervals.
Is spread over a driving sprocket (not shown) and a driven sprocket (not shown) which are distributed to an inlet portion and an outlet portion of the coating work area 1.
7 is intermittently rotated in one direction so that the workpiece w is moved into each of the partial areas in a state where the engaging portion 16 of the forward chain portion is engaged with the engaged portion 15 of each carriage 14. In the state stopped at Z, the sheet is conveyed intermittently in the direction in which the partial areas Z are arranged. In FIG.
Reference numeral 18 denotes a guide rail for guiding the wheels 19 of the cart 14.

Next, the air supply device S will be described with reference to FIG. The air supply device S supplies air to the coating sub-region Za for the top coating base and the film-forming sub-region Zb for flash-off, and the coating sub-region Za for the top coating clear.
And a pair of air supply portions Sa for supplying air to each of the film setting partial areas Zb for setting, and the pair of air supply portions Sa have the same configuration. The air supply unit Sa is provided from an air conditioner 31 that controls the temperature of the air supplied to each of the sub-zones Z, and an air supply fan Fs1 that can control the amount of air supplied by the inverter control unit INV. Air supply passage 32 for sending out the air, and air
Sprinkling means that includes a coating area air supply branch channel 32a and a membrane regulating area air supply branch channel 32b that diverge into a path, and that sprays water to the air flowing through the air supply path 32 to remove dust and the like contained in the air. And a water sprinkling section W as a part. An adjustment damper Dp that adjusts the amount of supplied air by adjusting the opening degree is interposed in the coating area supply air distribution channel 32a. The coating area air supply branch 32a is connected to the plenum chamber 7 of the coating partial area Za for the topcoat base or the coating partial area Za for the topcoat clear, and the membrane regulating air supply branch 32b is flash-off. Is connected to the air supply chamber 6 of the film-regulating partial area Zb for setting or the film-regulating partial area Zb for setting.

The sprinkling section W includes an airtight casing 21 interposed in an air supply passage 32, a sprinkler 22 provided to sprinkle water in the casing 21, and a sprinkler 22 through a sprinkling pump 23. And a water sprinkling circuit 24 connecting the water reservoir at the bottom of the casing 21. The watering pump 23 controls the water supply amount by the inverter control unit INV, that is,
It is configured so that the amount of watering can be adjusted.

The exhaust device E will be described. The exhaust device E discharges air in the area from the coating area Za for the top coat base and the film area Zb for flash-off, and the coating area Za for the top coat clear and the film adjustment for setting. And a pair of exhaust portions Ea for discharging the air in the region from each of the sub-regions Zb, and the pair of exhaust portions Ea have the same configuration. The exhaust part Ea
A coating area exhaust path 33 connected to the air exhaust chamber 11 of the coating area Za for the topcoat base or the coating area Za for clearing the topcoat, and the inverter control unit INV interposed in the coating area exhaust path 33. Fan F with adjustable exhaust air volume
e1, a film-regulating area exhaust passage 34 connected to the air discharge chamber 11 of the film-regulating partial area Zb for flash-off or the film-conforming partial area Zb for setting, and the film-regulating area exhaust path 34 And an exhaust fan Fe2 operated at a constant exhaust air blowing rate for film regulation.

The control operation of the control device 3 will be described.
Although a detailed description is omitted, the control device 3 allows the article to be coated w to be carried into or out of the partial area Z in accordance with the transport timing of the conveyor T, Each opening / closing door 2 is opened and closed, and each opening / closing door 2 is maintained in a closed state while the object to be coated w is stopped in the partial area Z.

For each of the coating partial areas Za,
The painting work time Tw for painting by each of the painting machines 12 provided is set and stored in the control device 3. still,
Since the coating work time Tw is set according to each of the coating partial areas Za, the same is applied to each of the coating partial areas Za.
May be different. A workpiece detection sensor R for detecting the presence or absence of a workpiece w conveyed by the conveyor T is provided above the coating work area 1 on the workpiece transport path of the conveyor T.

Then, as shown in the time chart of FIG. 3, the control device 3 adjusts the plurality of coating partial areas Za in accordance with the transport timing of the conveyor T based on the detection information of the workpiece detection sensor R. In each case, in the stop time zone Tt of the conveyor T (corresponding to the stop time zone in which the workpiece w is stopped in the coating partial area Za), the presence or absence of the workpiece w is determined. With respect to the existing coating partial area Za, the coating work time Tw and the non-working time Tu corresponding to each of the coating partial areas Za are set in the stop time zone Tt, and the coating partial area Za where the workpiece w does not exist is set. Sets the entire stop time period Tt as the non-working time Tu, and supplies air in such a manner that the supply and exhaust air amount is smaller during the non-working time Tu than during the painting work time Tw in each of the coating partial areas Za. Device S and exhaust To control the location E. In addition, the control device 3 controls the painting area Z by the air supply device S and the exhaust device E.
In accordance with the adjustment of the supply / exhaust volume for each
For each a, the watering pump 23 is controlled by an inverter so as to increase or decrease the watering amount so as to increase the watering amount when the air supply / exhaust amount increases and decrease the watering amount when the air supply / exhaust amount decreases. It is controlled by the unit INV.

Therefore, using the control device 3, for each coating partial area Za, work information indicating whether or not the coating operation is being performed in the stop time zone Tt in which the object w is stopped in the coating partial area Za. Is issued in correspondence with each of the coating partial areas Za.

FIG. 3 shows that an object to be coated w
3 shows a time chart when the control device 3 exists.
When the conveyor T stops, timing of the conveyor stop time is started, and the supply / exhaust amount is changed from the standby supply / exhaust amount corresponding to the non-working supply / exhaust amount to the working supply amount corresponding to the supply / exhaust amount during the painting work. The air supply device S and the exhaust device E are controlled so as to increase the displacement, and after the conveyor T is stopped, the set time Ts
When the time required for the supply / exhaust amount to reach the work-time supply / exhaust amount has elapsed, the timing of the coating operation time Tw set for each coating partial area Za is started, and the coating operation time T
When w has elapsed, the air supply device S and the exhaust device E are controlled to reduce the supply / exhaust amount to the standby supply / exhaust amount.
Maintain the standby supply / exhaust volume, and measure the conveyor stop time as T
The above-described control is repeated each time the conveyor t is operated and stopped to transfer the object to be coated w to the next partial zone Z at t. Accordingly, the painting work is performed during the lapse of the painting work time Tw, and the time from the end of the timing of the painting work time Tw to the start of the timing of the next painting work time TW corresponds to the non-work state. Non-working time Tu. or,
If it is determined during the execution of the control that the object to be coated w does not exist based on the detection information of the object to be coated detection sensor R, the timing of the coating work time Tw is not executed, so the stop time zone T
The entirety of t becomes the non-working time Tu.

The standby air supply / discharge amount of the coating partial area Za is set to, for example, a minimum value necessary for ventilating the coating partial area Za.

The adjustment of the supply / discharge amount will be described. In order to adjust the supply / exhaust amount of the coating partial area Za to the supply / exhaust amount during operation, the supply fan Fs1 is controlled by the inverter control unit INV.
Is controlled so that the air supply amount is equal to the operation air supply amount, and the adjusting damper Dp is connected to the coating area air supply passage 3.
The air supply amount 2a is controlled so as to be the work air supply amount, and the exhaust fan Fe1 is controlled by the inverter control unit INV such that the exhaust air amount is the work exhaust air amount. In order to adjust the supply / exhaust amount of the coating partial area Za to the standby supply / exhaust amount, the inverter control unit INV controls the supply fan Fs1 so that the supply air supply amount becomes the standby supply air supply amount. The adjustment damper Dp is controlled so that the supply air flow rate in the coating area supply air distribution channel 22a becomes the standby supply air flow rate, and the inverter control unit I
The NV controls the exhaust fan Fe1 so that its exhaust air flow becomes the standby exhaust air flow. Exhaust fan Fe2
Is operated at a constant flow rate of exhaust gas for regulating the film thickness, so that the air supply / exhaust amount of each of the film regulating partial areas Zb is constant regardless of the adjustment of the supply / exhaust amount of each of the coating partial areas Za. I have.

By the way, the coating partial area Z for the topcoat base
About a, the air supply air volume for the air supply fan Fs1 at the time of work
1062m^Three/ Min, work by adjusting damper Dp
945m of air supply for hour^Three/ Min, exhaust fan F
Exhaust air flow for operation of e1 945m^Three/ Min
And the amount of air blown for film regulation by the exhaust fan Fe2 is 117
m^Three/ Min respectively, so that
The working supply / discharge amount of the base coating partial area Za is 945.
m^Three/ Min, and a film-regulating partial area for flash-off
Zb supply and exhaust volume is 117m^Three/ Min. Air supply
The supply air volume for standby Fs1 is 201m^Three/ Min
In addition, the standby supply air flow rate by the adjustment damper Dp is set to 84 m.
^Three/ Min, the exhaust air volume for standby of the exhaust fan Fe1
84m^Three/ Min, and adjustment by the exhaust fan Fe2.
117 m of exhaust air for membrane^Three/ Min.
Thus, the coating partial area Za for the topcoat base is
Standby supply / discharge volume is 84m^Three/ Min, flash
The supply / exhaust volume of the off film-regulating partial area Zb is 117 m.^Three/ M
in. About the partial area Za for coating for clear top clear
Indicates that the air supply fan Fs1 has a working air supply amount of 903 m.
^Three/ Min, supply air for work by adjusting damper Dp
675m^Three/ Min, when working with the exhaust fan Fe1
Exhaust air flow 675m^Three/ Min and exhaust fan
Exhaust air flow for film regulation by Fe2 is 228m^Three/ Min
Each has been set, so that the paint for the clear coat clear
The working air supply and exhaust volume of the sub zone Za is 675 m^Three/ Min and
And the air supply / exhaust volume of the film-regulating partial area Zb for setting is
228m^Three/ Min. When the air supply fan Fs1 is on standby
312m for air supply^Three/ Min, adjustment damper Dp
84m for standby air supply^Three/ Min, exhaust
84 m of exhaust air for standby time of fan Fe1^Three/ Min
And the exhaust air volume for film regulation by the exhaust fan Fe2
228m^Three/ Min, respectively,
And standby air supply / discharge amount of the coating partial area Za for the topcoat clear
Is 84m^Three/ Min, and a film-regulating part for setting
The supply and exhaust volume of the domain Zb is 228 m ^Three/ Min.

Further, in parallel with the control for adjusting the air supply / exhaust amount as described above, the controller 3 controls the lateral flow (including the direction) based on the pair of anemometers 13 provided in each of the sub-zones Z. The presence / absence is detected, and if there is a lateral flow, the supply / exhaust amount of the coating partial area Za is adjusted so as to eliminate the lateral flow. Specifically, in order to adjust the air supply / exhaust amount of the coating partial area Za so that the detected air velocity value becomes zero, the air supply fan Fs1 and the exhaust fan Fe1 are connected to the inverters. Control.

Hereinafter, each of the second and third embodiments will be described. The same reference numerals are given to the same components and components having the same operations as those of the first embodiment in order to avoid redundant description. The description will be omitted, and a configuration different from the first embodiment will be mainly described.

[Second Embodiment] Hereinafter, based on FIG.
A second embodiment of the present invention will be described. As in the first embodiment, the air supply device S is configured by a pair of air supply portions Sa, and the exhaust device E is configured by a pair of exhaust portions Ea.
The air supply unit Sa sends out the air from the air conditioner 31 via the air conditioner 31 similar to that of the first embodiment and the air supply fan Fs2 whose air supply / blowing amount is adjustable by the inverter control unit INV. Air supply path 35, air supply amount adjusting air supply path 35 a for diverting the air delivered through the air supply path 35 into three paths, standby-time supply air supply path 35 b, and membrane regulating area supply air supply path 35c, and the same configuration as that of the first embodiment, with a water sprinkling section W for sprinkling water flowing through the air supply passage 35, An opening / closing damper Da1 for interrupting the flow of air is interposed. Then, the air supply flow dividing passage 35a for ventilation amount adjustment and the supply air dividing passage 3 for standby time
5b is connected to the plenum chamber 7 of the coating sub-area Za for the top coating base or the coating sub-area Za for the clear coating, and the film-regulating area air supply branch channel 35c is connected to the film-forming sub-area Zb for flash-off. Or a film-regulating partial area Zb for setting
Connected to the air supply chamber 6.

The exhaust section Ea is provided with a working exhaust path 36 provided with an exhaust fan Fe3 operated at a constant working exhaust air flow rate, an opening / closing damper Da2 and a constant standby exhaust air flow rate. A standby exhaust path 37 interposed with an exhaust fan Fe4 to be operated, and a film-regulating region exhaust path 38 interposed with an exhaust fan Fe5 operated at a constant film-forming exhaust air flow rate. It is. The working exhaust path 36 and the standby exhaust path 37 are connected to the air discharge chamber 11 of the coating partial area Za for the topcoat base or the coating partial area Za for the clearcoat base. Is connected to the air discharge chamber 11 of the film-conditioning partial area Zb for flash-off or the film-conditioning partial area Zb for setting.

In order to adjust the supply / exhaust air amount of the coating partial zone Za to the supply / exhaust air amount during operation, the air supply fan Fs2 is operated by the inverter control unit INV so that the air supply air supply amount becomes the air supply air supply during operation. While controlling, the opening / closing damper Da1 is opened, the exhaust fan Fe3 is operated, the exhaust fan Fe4 is stopped, and the opening / closing damper Da2 is closed.
In order to adjust the supply / exhaust amount of the coating partial area Za to the standby supply / exhaust amount, the air supply fan Fs is controlled by the inverter control unit INV.
2 is controlled so that the supply air supply amount becomes the standby supply air supply amount, the opening / closing damper Da1 is closed, the exhaust fan Fe3 is stopped, the exhaust fan Fe4 is operated, and the opening / closing damper Da2 is operated. open. Irrespective of adjusting the supply / exhaust amount of the coating partial area Za to the supply / exhaust amount during operation and the supply / exhaust amount during standby, the exhaust fan Fe5 is operated at a constant exhaust air flow rate for film regulation.

Incidentally, the partial area for coating Z for the topcoat base
About a, the air supply air volume for the air supply fan Fs2 during operation
1062m^Three/ Min, the supply air volume for standby
1m ^Three/ Min, the exhaust fan Fe3 for operation
Air volume 945m^Three/ Min, standby of exhaust fan Fe4
84m exhaust air volume^Three/ Min, exhaust fan Fe
5: 117 m^Three/ Min respectively
I do. And the air supply and exhaust should be adjusted to the air supply and exhaust during operation.
In other words, if the control is performed as described above, the air supply flow dividing passage 3
86m of ventilation volume of 5a^Three/ Min, air supply for standby
The flow rate of the passage 35b is 84m^Three/ Min, air conditioning area supply
The ventilation volume of the branch channel 35c is 117 m^Three/ Min, when working
Air volume of the exhaust path 36 is 945m^Three/ Min, when waiting
Exhaust passage 37 is shut off, and the air flow through the
117m^Three/ Min, so that
The supply / exhaust volume during work in the sub-coating area Za for base is 945 m
^Three/ Min, and the film-forming partial area Z for flash-off.
The supply and exhaust volume of b is 117m^Three/ Min. Also supply and exhaust
Control as described above to adjust the amount to the standby supply / exhaust amount
When the air supply flow dividing passage 35a is shut off,
The ventilation volume of the supply air distribution channel 35b is 84m^Three/ Min
The ventilation volume of the membrane region air supply distribution channel 35c is 117 m^Three/ Min
At the same time, the evacuation of the exhaust passage 36 for operation is stopped,
The ventilation volume of the exhaust path 37 is 84m ^Three/ Min.
The ventilation volume of the area exhaust passage 38 is 117 m^Three/ Min, and
As a result, at the time of standby of the coating partial area Za for the topcoat base
84m supply and exhaust volume^Three/ Min, for flash off
The air supply and exhaust volume of the film-regulating partial area Zb is 117 m^Three/ Min and
Become.

[Third Embodiment] Hereinafter, based on FIG.
A third embodiment of the present invention will be described. As in the first embodiment, the air supply device S is configured by a pair of air supply portions Sa, and the exhaust device E is configured by a pair of exhaust portions Ea.
The air supply section Sa is provided with an air conditioner 31 similar to that of the first embodiment, an air supply fan Fs3 operated at a constant air supply flow rate, and an opening / closing damper Da3 to supply air from the air conditioner 31. An air supply path 39 for sending out air, an air supply path 40 for sending out air from the air conditioner 31 with an air supply fan Fs4 operated at a constant air supply and air supply amount, and an air supply path 40 for air supply And a coating area supply channel 40a and a film-regulating area supply channel 40b for dividing the air to be sent out into two paths, and having the same configuration as that of the first embodiment. It is provided with a water sprinkling section W for sprinkling water flowing through the air 40. The air supply path 39 and the coating area air supply branch 40a are connected to the plenum chamber 7 of the coating partial area Za for the topcoat base or the coating partial area Za for the topcoat clear. Reference numeral 40b is connected to the air supply chamber 6 of the film-regulating partial area Zb for flash-off or the film-regulating partial area Zb for setting.

The exhaust section Ea includes a working exhaust path 41 provided with an exhaust fan Fe6 operated at a constant working exhaust air flow rate, a coating area exhaust path 42a provided with an opening / closing damper Da4, In addition to merging the air flowing through the film-regulating area exhaust path 42b and the coating area exhaust path 42a and the film-regulating area exhaust path 42b, an exhaust fan Fe7 whose exhaust air flow rate is adjustable by the inverter control unit INV is interposed. An exhaust junction 42 is provided. The working exhaust path 41 and the coating area exhaust path 42a are connected to the air exhaust chamber 11 of the coating partial area Za for the topcoat base or the coating partial area Za for the topcoat clear, and the film regulating area exhaust path 42b is It is connected to the air discharge chamber 11 of the film-conditioning partial area Zb for flash-off or the film-conditioning partial area Zb for setting.

In order to adjust the supply / exhaust amount of the coating partial area Za to the supply / exhaust amount during operation, the air supply fans Fs3 and Fs4 are operated, the opening / closing damper Da3 is opened, and the exhaust fan Fe6 is operated to open / close. The damper Da4 is closed, and the exhaust fan Fe7 is controlled by the inverter control unit INV such that the amount of exhaust air to be blown is equal to the amount of exhaust air for operation. In order to adjust the supply / exhaust amount of the coating partial area Za to the standby supply / exhaust amount,
The air supply fan Fs3 is stopped, the air supply fan Fs4 is operated, the open / close damper Da3 is closed, the exhaust fan Fe6 is stopped, the open / close damper Da4 is opened, and the inverter control unit INV
To control the exhaust fan Fe7 so that the exhaust air flow becomes the standby exhaust air flow.

By the way, the coating partial area Z for the topcoat base
As for a, the supply air flow rate of the supply fan Fs3 is set to 861.
m^Three/ Min, the supply air flow rate of the supply fan Fs4 is set to 20
1m ^Three/ Min, the exhaust fan Fe6 for operation
Air volume 945m^Three/ Min, work of exhaust fan Fe7
117m exhaust air volume^Three/ Min, standby exhaust
Blow volume 201m^Three/ Min. And
In order to adjust the air supply and exhaust to the work air supply and exhaust,
As you control, the ventilation volume of the air supply path 39 is 861m^Three/ Min
In addition, the ventilation volume of the coating area air supply distribution channel 40a is 84 m.^Three/ Mi
n, the air flow rate of the membrane regulating air supply distribution channel 40b is 117 m^Three/
min, the ventilation volume of the working exhaust passage 41 is 945 m^Three/
min, the coating area exhaust passage 42a is shut off,
The ventilation volume of the road 42b is 117m^Three/ Min, and
Therefore, the supply and discharge during the operation of the coating partial area Za for the topcoat base is performed.
Capacity 945m^Three/ Min for flash off
The supply / discharge volume of the film-regulating partial area Zb is 117 m.^Three/ Min
You. Also, in order to adjust the supply / exhaust volume to the standby supply / exhaust volume,
In this case, the air supply path 39 is shut off,
The ventilation volume of the branch channel 40a is 84m^Three/ Min, membrane control area supply
The ventilation volume of the mood passage 40b is 117 m^Three/ Min, work
The time exhaust passage 41 is shut off, and the ventilation of the coating area exhaust passage 42a is performed.
84m^Three/ Min, the air flow rate of the membrane regulating region exhaust passage 42b
Is 117m^Three/ Min, so that
Supply / exhaust air volume during work in the painting sub-zone Za is 84 m^Three/
min, and the film-forming partial area Zb for flash-off.
The supply and exhaust volume is 117m^Three/ Min.

[Another Embodiment] Next, another embodiment will be described. (A) The coating partial area Za in the coating work area 1 or a partial area Z other than the coating partial area Za (for example, the film regulating partial area Z)
b) the number of coating areas Z and the coating area Z
The arrangement form of the partial areas Z other than a is not limited to the example illustrated in the above embodiment. For example, FIG.
, The coating work area 1 is divided into seven sub-areas Z, and the seven sub-areas Z are arranged from the upper side to the lower side in the conveying direction of the object to be coated on the conveyor T, and the preparation sub-areas Zc, An automatic painting zone Za, a setting membrane zone Zb,
It is also possible to use an automatic coating partial area Za, a setting film adjusting partial area Zb, a correction coating partial area Za, and a setting film adjusting partial area Zb. In the coating booth shown in FIG. 6, one coating object w is provided for each of the seven partial areas Z.
A conveyor 2 having the same configuration as that of the above-described embodiment is provided, which is configured to convey articles to be coated w in a row at a pitch where exists, but is not shown. In addition, the entrance and the exit of the coating work area 1 and the space between the adjacent partial areas Z are partitioned by the opening / closing door 2, and the upper part of the ceiling of the coating work area 1 is partitioned corresponding to each partial area Z. A plenum chamber 7 is provided, and an air discharge chamber 11 is provided below the floor of the coating work area 1 so as to correspond to each partial area Z.

The air supply device S is provided with an air conditioner 31 corresponding to each of the partial areas Z, and connects the air conditioners 31 and the plenum chamber 7 of the partial area Z corresponding to the air conditioners 31 to the air supply path. 43
And the air supply fan 43 is interposed in each air supply passage 43, and the exhaust device E is connected to the exhaust passage 4 in each of the partial zones Z.
4 and an exhaust fan Fe8 in each exhaust path 44.
Is interposed. The air supply device S and the exhaust device E are configured to individually supply and exhaust air for each partial area Z. Note that the preparation partial area Zc is a coating partial area Za.
The return air passage 45 is provided in order to return a part of the discharged air for air supply since the air in the region is less contaminated as compared with the film-conforming partial region Zb.

Preparation area Zc and each coating area Za
Each of the air supply fan Fs5 and the exhaust fan Fe8 corresponding to (1) and (2) is configured such that the air flow can be adjusted by inverter control. Then, similarly to the above-described embodiment, the control device 3 (not shown) controls the supply / discharge amount during the non-working time Tu in each of the preparation partial area Zc and the painting partial area Za more than during the painting work time Tw. The supply fan Fs5 and the exhaust fan Fe8 are controlled so as to reduce the number. In addition, the preparation partial area Zc
With regard to (2), the coating work time Tw and the non-working time Tu are set at the same timing as the adjacent coating partial area Za.

(B) The supply / exhaust configuration for supplying / exhausting individually for each partial area Z can be variously changed. For example, the first
The air supply device S in the embodiment, the second embodiment or the second embodiment
Combination with the exhaust device E in the embodiment,
The air supply device S in the embodiment, the first embodiment or the third embodiment
Combination with the exhaust device E in the embodiment,
The air supply device S in the embodiment, the first embodiment or the second embodiment
You may combine with the exhaust device E in embodiment. Further, in another embodiment shown in FIG. 6, the supply / exhaust configurations for the three film-regulating partial areas Zb are combined into one,
The supply / exhaust configuration for the three coating sub-regions Za may be combined into one. Further, in another embodiment shown in FIG. 6, as a supply / exhaust configuration for the coating partial area Za, two supply / exhaust paths may be provided as in the above-described second or third embodiment. good.

(C) In the above embodiment, the air supply / discharge amount of the film-regulating sub-region Zb is kept constant irrespective of whether the coating sub-region Za is during the painting operation or not. Although the case of configuring is exemplified, the film-regulating partial area Zb
May be increased or decreased in accordance with the increase or decrease of the supply / exhaust amount of the adjacent coating partial area Za.

(D) In the above embodiment, the case where the work information issuing means 3A is configured using the control device 3 has been exemplified. However, instead of this, the coating machine 12 starts and ends the coating work. The work information issuing means 3A may be configured to emit a signal, and the work information issuing means 3A may be configured using the coating machine 12.

(E) As a specific configuration of the ventilation preventing means,
Instead of the opening / closing door 2 exemplified in the above embodiment, various configurations such as an air curtain can be adopted.

(F) As a configuration for determining the presence or absence of the object to be coated w in each of the plurality of coating partial areas Za, a configuration in which a coating object detection sensor is provided in each of the coating partial areas Za;
Alternatively, based on the article transport information from the management device that manages the transport of the article w by the conveyor T, the coating area Z
Various configurations can be adopted, such as a configuration for determining the presence or absence of the object to be coated w for each of a.

(G) The object to be coated w is not limited to an automobile body, but may be a casing of a home electric appliance or the like.

[Brief description of the drawings]

FIG. 1 is a block diagram of a painting booth according to a first embodiment.

FIG. 2 is a vertical cross-sectional view of the coating booth according to the embodiment, taken in a direction perpendicular to the direction in which the object is transported.

FIG. 3 is a diagram showing a time chart of a control operation of the coating booth according to the embodiment.

FIG. 4 is a block diagram of a painting booth according to a second embodiment.

FIG. 5 is a block diagram of a painting booth according to a third embodiment.

FIG. 6 is a block diagram of a painting booth according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Painting work area 2 Ventilation prevention means 3 Control means 3A Work information issuing means 13 Ventilation detection means w Workpiece E, S Supply / exhaust means T Transport means W Sprinkling means Za Painting area

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Yamamoto 100 Kanayama, Ichiriyama-cho, Kariya-shi, Aichi Pref. Co., Ltd. (72) Inventor Etsuo Kawahara 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo In-house Co., Ltd. (72) Inventor Hideo Kobori 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo F-company F Terms (Reference) 4D073 DD02 DD08 DD22

Claims (3)

[Claims] 1. In a coating work area in which a plurality of coating sub-areas are arranged side by side, a conveyance that intermittently conveys an object to be coated in a direction in which the coating sub-areas are arranged in a state of stopping at the coating sub-area. Means, and a supply / exhaust means for individually supplying / exhausting air to / from each of the coating partial areas, wherein the coating booth is configured so that the coating operation is performed while the object to be coated is stopped in the coating partial areas. In each of the both ends in the arrangement direction in the coating partial area, ventilation prevention means for preventing the flow of air over the inside and outside of the coating partial area is provided, and the supply / exhaust means is provided in the coating partial area. It is configured such that the supply / exhaust amount can be adjusted individually for each coating area, and for each of the coating partial areas, whether or not the coating operation is being performed in the stop time zone in which the workpiece is stopped in the coating partial area. Work that issues work information corresponding to each of the painting sub-areas Based on the notification information of the work information issuing means, the supply / exhaust means so that the air supply / exhaust amount is smaller in each of the painting sub-areas when the painting operation is not being performed than during the painting operation. Booth provided with control means for controlling the painting. 2. A water spraying means for spraying air supplied by the air supply / exhaust means to the coating partial area is configured such that a water spray amount can be individually adjusted for each of the coating partial areas. The control means is configured to control the water sprinkling means so as to increase or decrease the water sprinkling amount for each of the coating sub-areas in accordance with the increase / decrease of the supply / exhaust air quantity for each of the coating sub-areas by the supply / exhaust means. The coating booth according to claim 1, wherein 3. A ventilation detecting means for detecting a flow of air over the coating partial area, and a partial area in the coating work area partitioned by the coating partial area and the ventilation preventing means, is provided. 2. The control unit according to claim 1, wherein the control unit controls the air supply / exhaust unit so as to adjust the air supply / exhaust amount of the coating partial area so that the air flow detecting unit does not detect the flow of air. Or the painting booth described in 2.