JPS6028849A - Method and device for painting automotive body or the like - Google Patents

Abstract

PURPOSE:To prevent the pressure drop of the conditioning air to be supplied into a painting chamber and to decrease the amt. of the water and electric energy to be used by capturing the paint mist generated in the painting chamber by means of filters attached freely attachably and detachably to a carriage and filters in an air discharge chamber. CONSTITUTION:A material W to be painted such as an automotive body or the like is placed on a carriage 11 and is continuously conveyed by a conveyor 10 into the chamber 3 of a painting booth 1, the inside of which is formed successively to the three chambers; an air feed chamber 2, a painting chamber 3 and a air discharge chamber 4 with a filter 5 and a drainboard 6 respectively as boundaries. Said material is painted with the paint sprayed from an automatic painting machine 14 during the above- mentioned conveyance. The paint mist scattering in the chamber 3 without sticking to the surface of the material W is forcibly and primarily captured by filters 18, 18a provided freely attachably and detachably to the carriage 11 and the remaining paint mist failing to be primarily captured is secondarily captured by the filter 25 disposed in the chamber 4 during painting. As a result, the pressure drop of the conditioning air to be supplied into the chamber 3 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating method and a coating apparatus suitable for coating objects to be coated, such as four automobiles.

Conventionally, an automatic painting station as shown in Fig. 4 has been used in a painting station where objects to be painted, such as four automobiles, are continuously conveyed using a conveyor or other conveyance device while painting the paint openings. There is.

In FIG. 4, reference numeral 51 denotes a paint booth formed in the shape of a tunnel, and the space inside this paint booth 1 is an air supply chamber 52. @It is formed in a royal form of a bag chamber 53 and an exhaust chamber 54, 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 by a screen 56. Separated.

A conveyor 57 is laid in the longitudinal direction on the upper surface of the bamboo basket 56, and rails 58, 5 are provided on both sides of the conveyor 57.
8a has been installed. On both sides of the painting room 53, automatic painting machines 59, 59&, such as painting robots, are arranged, and each of these automatic painting machines 59, 59a is provided with a spray gun 60°60a.

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

Inside the water supply gutter 61, 6111, there are flow plates 62 extending downward on opposite sides. -62a is provided. An exhaust fan 6 is provided in the exhaust chamber 54.
An exhaust duct 64 is connected to the air supply chamber 5.
2 has a configuration in which an air supply duct 67 having an air conditioner 65 and an air supply fan 66 is connected.

When painting the four automobiles W, the air conditioner 65 adjusts the temperature to a predetermined temperature of 1,000 degrees, and the conditioned air is supplied to the air supply chamber 52 by the air supply fan 66, and is passed through the filter 55 for painting. The paint mist that has not been applied to the four automobile bodies W is discharged to the exhaust chamber 54 by the exhaust fan 63, and the flow plates 62, 62 of the exhaust chamber 54
1-Apply from the air-conditioned air by bringing it into contact with flowing water H44
Mist is now removed.

However, in such automatic painting equipment, the conditioned air that has passed through the screen 56 from the painting room 53 and is discharged into the exhaust chamber 54 is brought into contact with the water H flowing through the flow plates 62 and 628, and is then sprayed with paint mist. This not only increases the pressure loss of the conditioned air, but also increases the pressure loss of the conditioned air.
When painting 4 cars W, water supply gutter 61,618. It is necessary to circulate a large amount of water H to the flow plate 62, 628 and the water tank (not shown), which requires a large amount of water H and consumes a large amount of electrical energy to circulate the water H. There is a problem.

The present invention was made in order to solve the above-mentioned problems, and its purpose is to capture paint mist scattered in the painting room using filters removably housed in nine trucks and a filter in the exhaust chamber. An object of the present invention is to provide a method for painting automobiles, etc., which can prevent pressure loss of conditioned air supplied into a bag room, and reduce water and 1U air energy, and a painting equipment therefor.

In the method of painting four automobiles, etc. according to the present invention, the painting room of the painting booth is formed in the royal area of the air supply room, the painting room, and the exhaust room in order from the left side, with the filter and the screen as the boundaries of the interior. The objects to be painted, such as four automobiles, were placed on a stand I.
This is a coating method in which the paint is placed on a vehicle L and sprayed with paint by an automatic paint machine while being continuously conveyed by a conveyance device, and the paint is sprayed onto the surface of the object to be painted, such as four automobiles, by the automatic paint machine. During this process, the 4I4E particles that are deposited on the surface of the object to be coated and scattered inside the bag chamber are forcibly captured primarily by a filter removably attached to the trolley, and the remainder that was not captured is This system is characterized by the fact that the paint mist is secondarily captured by a filter installed in the exhaust chamber of the paint booth, and the painting process is carried out while the paint mist is being captured secondarily by a filter installed in the exhaust chamber of the paint booth. A conveyance device that transports a trolley on which objects to be painted, such as four automobiles, are placed into the painting room of a painting booth formed in the royal order of an air supply room, a painting room, and an exhaust room in order from the left side, with the boundary between the two. In addition, an automatic coating machine is installed on the side of the conveyance device. A primary filter is removably attached to capture paint mist scattered in the painting room, and an exhaust duct is installed in front of the automatic painting machine in the painting room and on the travel path of the secondary filter, which is attached to the trolley to exhaust the paint booth. It is characterized by having a secondary filter installed in the chamber.

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

Fig. 1 is a front view cut away from the paintworks of four automobiles, etc. according to the present invention, Fig. 2 is a sectional view taken along line l-1 in Fig. 1, and Fig. 3 is a cross-sectional view taken along line A in Fig. 1. An enlarged sectional view inside the circle is shown. 1st
In the drawings to FIGS. 3A and 3B, reference numeral 1 denotes a coating booth formed in the shape of a tunnel, and the space inside this coating booth 1 is 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. The area is divided with Kanoko 6 as the 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. In addition, a conveyor 10 is installed on the side of the basket 6 in the bag room 3 in the longitudinal direction of the center of the painting room 3.

This conveyor IO is provided with a plurality of dogs 12 that are hooked onto a cart 11 on which an automobile body W as an object to be painted is placed and conveyed. Rails 13, 13a are laid on both sides of this conveyor lO, and these rails 13. The trolley 11 is guided by the iaa. Furthermore, there are reciprocating cakes on the sides of both rails 13, 13a.

An automatic painting machine 14 such as a painting robot is disposed C, and this automatic painting machine 14 is equipped with a spray gun 15 that moves in the direction of the person and in the left and right directions and sprays paint toward the automobile body W. .

Further, an exhaust duct 16 is connected to the exhaust chamber 4,
One end is open to the atmosphere. An exhaust fan 17 is provided in the middle of this exhaust duct 16.
The exhaust fan 17 sucks the conditioned air in the painting room 3 and discharges it into four parts.

Furthermore, on both sides in the traveling direction of the trolley 11 on which the half-auto cars W are placed, paint mist that is scattered in the painting room 3 is captured without being applied to the surface of the four cars W during painting. Primary filters 1g and 18a are provided. The -order filters 18, 18a are made of thin wires made of stainless steel, brass, copper, etc. woven into a net shape, and several to dozens of them are stacked one on top of the other to form a partially rectangular shape, with both ends located at the front and rear of the cart 11. It is said to be large enough to protrude from the end. Furthermore, frame plates 19 and 19a are provided on both sides of the -order filters 18 and 18a, as shown in the enlarged view of FIG.
, 19a are formed with extraction portions 20, 20a extending from the lower surface of the primary filter 18.18a, and
This frame plate 19.19a allows the primary filters 18, 18
a is reinforced. and.

A support member 21 whose tip is bent downward at a right angle is provided at the -F end of one frame 19a, and the bent tip of this support member 21 is provided on the side surface of the truck 11. It is inserted into the holding member 22. As a result, the -order filters 18 and 18a can be attached to and detached from the trolley 11.

In addition, a discharge duct 23 is arranged in the corner of the screen 6, and one end of the discharge duct 23 is connected to the primary filter 18, 188 provided in front of the automatic coating machine 14 in the painting room 3 and on the side of the trolley 11. The other end penetrates the side wall of the exhaust chamber 4 and is open to the atmosphere, and an exhaust fan 24 is provided in the middle. Then, when the trolley 11 on which the automatic half body W is placed is conveyed to the automatic coating machine 14 by the conveyor lO, the -order filter 18
, 188, the oil portions 20, 20a of the frame plates 19゜19a provided on both sides of the frame plate 19゜19a cover the protruding portion of the discharge duct 23, and the oil parts 20, 20a of the frame plates 19゜19a provided on both sides of the frame plate 188 cover the protruding part of the discharge duct 23, and the oil portions 20, 20a of the frame plates 19゜19a provided on both sides of the frame plates 188, The air-conditioned air containing scattered @ material mist is sucked by the exhaust fan 24, and only the <ah mist is captured by the -order filters 18, 18a.

Further, on the side of the screen 6, a wide secondary filter 25 is disposed throughout the exhaust chamber 4.
5 captures paint mist in the conditioned air discharged from the painting room 3.

In the painting booth configured as described above, the air supply fan 8. Air conditioner 9 and exhaust fan 17 operate. By the operation of the air supply fan 8, outside air is introduced into the air conditioner 9 as shown by the arrow, and dust is removed.

The air is 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 rectified in the air supply chamber 2, passes through a filter 5, and is evenly supplied to the painting chamber 3.

In addition, the trolley 11- which has been transported by the conveyor 10
The four automobiles W are carried into the painting room 3 through the entrance 3a. Then, when the four automobiles W are transported to the automatic coating machine 14 disposed on both sides of the painting room 3, paint is sprayed by the spray gun 15 to form a coating film. In this way, 4 cars W are conveyor 1
Paint is sprayed while being conveyed by o, and painting is completed, and at the same time, it is conveyed from the outlet 36 of the painting chamber 3 to the next process.

Then, when the trolley 11 is transported to the automatic coating machine 14 during the painting of the automobile body W.

The oil portions 20, 2Ua of the frame plate 19.19a provided on both sides of the second filter 18.18a cover the protrusion of the discharge duct 23, and the discharge fan 24 of the fJI discharge duct 23 is activated. At the same time, paint is sprayed from the spray gun 15 of the automatic painting machine 14, and most of the paint is applied to the surfaces of the four automobile bodies W. Then, some of the coating 4 is not applied to the surface of the 4 automobiles W,
The paint mist is scattered inside the painting room 3, but a part of the conditioned air supplied into the painting room 3 is always sucked into the exhaust duct 23 by the operation of the exhaust fan 24. 4
! Most of the paint mist in the storage chamber 3 passes partly through the filter 18.18a together with the sucked-in secondary air.

At this time, part of the paint mist is captured by the filters 18 and 188, and the purified conditioned air is discharged to the outside from the exhaust duct 23. - Moth.

Most of the conditioned air supplied to the painting chamber 3 is sucked into the exhaust chamber 4 through the * 6 by the operation of the exhaust fan 17, and the remaining air that was not captured by the -order filter 18゜18a is The paint mist passes through a secondary filter together with the air conditioned air that is drawn in, and the paint mist is captured, and the air conditioned air that has been purified by capturing the paint mist passes through the exhaust duct 16 and is discharged to the outside. be done.

Then, the four cars W that have been fitted are transported to the conveyor 10.
is transported to the next process, but before the first process,
- order filters 18, 18a are removed from the trolley 11 and regenerated, and some of the regenerated filters 18, 18
a is attached to the trolley 11 at the entrance 3a of the painting room 3.

As explained below, in the method of painting four automobiles, etc. and the painting equipment of the present invention, when painting the surface of the object to be painted, such as four automobiles, the coating f4E spray that is scattered in the painting room can be prevented. This is because the particles are forcibly captured by a partial filter that is removably attached to the side of the trolley on which the object to be painted is placed and transported, and a secondary filter that is installed in the exhaust chamber.

Since the coating f4t strike can be captured by a dry method, the pressure loss of the conditioned air due to exhaust can be reduced compared to the conventional wet method using water.

In addition, by capturing paint mist in a dry manner,
The use of water is eliminated, thereby.

This has the effect of significantly reducing the electrical energy needed to circulate water.

Furthermore, in the present invention, a part of the filter is detachably installed on the trolley to remove paint mist generated in the painting room.
Since the secondary filter installed in the exhaust chamber captures the paint from the conditioned air discharged to the outside.
This has the effect of reliably eliminating 4E strikes.

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of the paintwork of four automobiles and the like according to the present invention, FIG. 2 is a sectional view taken along line B-B in FIG. 1,
FIG. 3 is an enlarged sectional view of the circle A in FIG. 1, and FIG. 4 is a cutaway front view of a conventional inner bag device for four automobiles. 1...Painting booth, 2...Air supply room, 3...Painting. 3a...inlet, 3b...exit, 4...exhaust chamber. 5... Filter, 6... Bamboo shoots, 7... Air supply duct. 8...Air supply fan, 9...Air conditioner. lO... Conhair, 11... 4 + 12... Dog. 13.13a...Rail, 14...Automatic rigging machine. 15...Spray gun, 16...Exhaust duct. 17...Exhaust fan 18.18a...-next filter, 19,19a...
frame board. 20.20a...oil part, 21...support member. 22... Holding member, 23...j non-exit duct. 24...Exhaust fan, 25...Secondary filter Applicant Toyota Motor Corporation

Claims (1)

[Claims] (1) Into the painting room of the painting booth, which is formed into an air supply room, a painting room, and an exhaust room in order from above, with the filter and the screen as the boundaries of the room. A painting method in which objects to be painted, such as four automobiles, are placed on a trolley, and while being continuously conveyed by a conveyance device, an automatic coating machine sprays and paints the four automobiles. When spraying paint on the surface of an object to be painted, etc., the paint mist that scatters inside the painting room is forcibly captured primarily by a filter that is detachably attached to the trolley without applying it to the surface of the object to be painted. A method for painting four automobiles, etc., characterized in that the remaining paint mist that is not captured is secondarily captured by a filter installed in an exhaust chamber of a painting booth. As a result, a conveying device for transporting a trolley on which objects to be painted, such as four automobiles, are placed, is installed in the painting room of the painting booth, which is formed in order from the top into the air supply room, honey bag room, and exhaust gas room. It is a painting station in which an automatic painting machine is installed on the side of this conveyance device, and objects to be painted such as the four automobiles are not placed on the side of the S trolley, @ inside the bag room. scattering l1
11. A primary filter that captures the mist is detachably attached, and an I/I' outlet duct is provided in front of the autofiib@equipment in the painting chamber and on the movement path of the primary filter that is attached to the trolley. , 4 cars, etc., featuring a secondary filter installed in the exhaust chamber of the paint booth.