JPS6028850A - 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 scattering in the painting chamber by means of filters attached to a carriage and a filter in a discharge duct. CONSTITUTION:A material W to be painted such as an automotive body is placed on a carriage 11 in a painting chamber 3 of a painting booth 1 and while the material is conveyed continuously by a conveyor 10, a paint is sprayed onto the surface of the material W from an automatic painting machine 4 thereby painting said material. The paint mist scattering in the chamber 3 without sticking to the surface of the material W is forcibly captured by primary filters 18, 18a provided freely attachably and detachably to the side face of the carriage 11 and secondary filters 25, 25a provided in th mid-way of a discharge duct 23. The pressure drop of the conditioning air with the discharge of the air is decreased as compared to the conventional wet type painting device using water; moreover, the use of water is eliminated and the electric energy for circulating the water is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating method and apparatus suitable for tilting painted objects such as automobile bodies.

Conventionally, objects to be decorated, such as automobile bodies, have been continuously conveyed using a conveyor or other conveyance device, while painting robots or Pel 1! l! In the case of an automatic coating machine such as a coating machine (4.II), an automatic coating machine as shown in FIG. 5 is used.

In FIG. 5, reference numeral 51 denotes a painting booth formed in the shape of a tunnel, and the daily space of this painting booth is an air supply room 52. The painting room 53 and the exhaust pipe 54 are formed into a royal structure, and the air supply room 52 and the painting room 53 are separated by a filter 55 that removes fine dust.
It is separated from the air chamber 54 by a screen 56.

A conveyor 57 is laid in the longitudinal direction on one side of the screen 56, and rails 58, 5 are provided on both sides of the conveyor 57.
8a has been installed. On both sides of the coating room 53, automatic coating machines 59 and 598 such as Yu-apparatus J-bot are installed, and each of these automatic coating machines 59+59a is provided with a spray gun 60.degree. 60a.

Furthermore, water supply machines 61 and 61a are arranged horizontally on both side walls of the exhaust sub-54 in the longitudinal direction.

Of these water supplies IJ61, 618, flow plates 62, 6 extending downward on opposite sides are provided.
2a is provided. A VR air duct 64 having an exhaust fan 63 is connected to the exhaust chamber 54.
An air supply duct 67 having an air conditioner 65 and an air supply fan 66 is connected to the air supply chamber 52 .

When painting the four automobiles W, the left air conditioner 65 supplies conditioned air to a predetermined temperature of + + W degrees to the air supply chamber 52 by the air supply fan 66.
It passes through a filter 55 and is evenly supplied to the coating layer 53,
Along with this air, the paint mist that did not arrive on the four automobiles W is discharged into the exhaust chamber 54 by the exhaust fan 63, and the flow plate 62 of the air chamber 54,
62a and 62a are brought into contact with flowing water H) to remove uncoated mist from the conditioned air.

However, in such a self-assistance/abuse device, the fJP air chamber 5 is
The conditioned air discharged into Flow Play h62.6
Since the coating mist is captured while coming into contact with the water flowing over 2a, not only does the loss of pressure 114 of the conditioned air become large, but also water supply machines 61, 61a are used when painting 4 automobiles. , it is necessary to circulate a large amount of water 1-f to the flow plate 62.62a and the water tank (not shown), which requires a large amount of water II and water H.
There is a problem in that a large amount of energy is consumed when rotating the t-component ζC.

The present invention was made in order to solve the problem r1 mentioned in E, and its purpose is to capture the paint mist scattered in the urinary chamber by a filter detachably attached to the nine trucks and a filter in the discharge duct. This prevents pressure loss in the conditioned air supplied into the painting room, and also prevents water and i
The object of the present invention is to provide a method for painting automobiles, etc., which can reduce energy consumption, and a painting equipment therefor.

In the method of painting four automobiles, etc. according to the present invention, objects to be painted, such as automobiles and other automobiles, are placed on a trolley in the painting room of a painting booth, and the objects to be painted are placed on an automatic painting machine while being continuously conveyed by a conveying device. This is a coating method in which 4 and 1 are sprayed on the surface of the object to be painted, when the automatic coating machine sprays the paint on the surface of the object to be painted, such as 4 automobiles. 1. Removes paint mist that scatters in the painting room without getting wet.
Some filters are removably attached to the trolley,
It is characterized by painting while forcibly capturing it with a secondary filter installed on the downstream side of this secondary filter, and the painting equipment for four automobiles etc. is installed in the painting room of the painting booth. , Self! A painting station is provided with a conveyance device u for conveying a trolley on which objects to be coated such as IIIJ turrets are placed and separated, and an own III coating machine is disposed on the side of this conveyance device. , 1 (on the side of a trolley on which objects to be painted, such as automobile bodies, are placed).

A portion of the filter that captures paint mist scattered in the painting chamber is detachably attached, and a discharge duct is provided in front of the automatic coating machine in the painting chamber and on the travel path of the portion of the filter that is attached to the trolley. An embodiment of the present invention, which is characterized in that a secondary filter is provided in the middle of the discharge duct, will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a front view cut away showing the crashing device for four automobiles, etc. according to the present invention, FIG. 2 is a cross-sectional view taken along line 1-11 in FIG. 1, and FIG. 3 is the same as in FIG. 1. Enlarged sectional view inside the hem circle, No. 4
The figure shows an enlarged sectional view taken along the line IV-ff in FIG. In Figures 1 to 4.

1 is a paint booth formed in a tunnel shape,
The space inside this painting booth 1 is formed in order into a royal family of an air supply chamber 2, a painting room 3, and an exhaust chamber 4. The painting room 3 and the exhaust chamber 4 are separated using a filter 5 as a boundary for removing stubborn dust, and a Kanoko 6 as a boundary.

An air supply duct 7 is connected to the air supply chamber 2,
An air supply fan 8 and an air conditioner 9 are connected to the air supply duct 7. Furthermore, a conveyor IO is installed on the upper surface of the screen 6 of the painting room 3 in the longitudinal direction of the central part of the painting room 3.

This conveyor 10 carries an automobile body Wft which is an object to be painted.
A plurality of dogs 12 are provided that hang out from the G vehicle 11 on which the object is placed and transported. Rails 13.13a are laid on both sides of this conveyor 10, and the trolley 11 is guided by these rails 13,138. Furthermore, both rails 13. There is a reciprocator on the side of the iaa.

An automatic paint sprayer 14 such as a robot is installed, and this automatic painting equipment JIl 4 has a spray gun 15 that moves in the human direction and in the left and right directions and sprays paint toward the automatic fil vehicle body W. It is provided.

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 inside the painting room 3 and exhausts it to the outside.

In addition, on both sides of the trolley 11 on which the four automobiles W are placed, in the forward fJ direction, a paint mist that can be applied to the inside of the painting room 3 without being applied to the surface of the four automobiles W during painting is applied. A capturing partial filter 18.18a is provided. The -order filters 18, 18a are woven into a rope shape from thin wires made of stainless steel, brass, trousers, etc., and several to dozens of pieces are stacked one on top of the other to form a 1η-shaped body, with both ends connected to the trolley. The size is larger than the front and rear ends of No. 11. Also, this -
Frame plates 19, 19a are provided on both sides of the secondary filters 18, 18&, as shown in the enlarged view of FIG. Further extended oil portions 20, 20a are formed, and a portion of the filter 1 is formed by the frame plates 19, 19a.
8 and 18a are reinforced. and.

- A support member 21 whose tip is bent at a right angle in the direction of the door is provided at the upper end of the frame 19a, and the bent portion of the tip of this support member 21 is provided on the side surface of the cart 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 at the do part of the child 6 of 9&, and one end of the discharge duct 23 is located in front of the automatic coating machine 14 in the coating jf, 3, and is connected to a part of the side provided on the side of the trolley 11. Filter 18. The travel path of taa is open to the air, and the other end is open to the atmosphere through the side wall of the exhaust chamber 4.
A fan 24 is provided in the middle thereof. In addition, a second filter 25.25a for capturing paint mist is provided at the tip of the intake IJ 23a, 23b of the 4JP output duct 23 that is open into the painting room 3, and this second filter 25.258 It is woven into a net shape from fine wires of stainless steel, brass, copper, etc., and is made up of several to dozens of layers stacked on top of each other.

The curved surface is shown in the enlarged view of Figure 4.

Partition plates 26, 26& made of a flexible material such as soft resin and formed in a lattice shape are provided. and.

4 cars W't NQ 'dl by conveyor lO
Site: When the trolley 11 is transported to the automatic coating machine 14, the oil portions 20, 20a of the frame plates 19, 19a provided on both sides of the -order filters 18, 188 are at the tip of the discharge duct 23. The paint mist scattered inside the painting room 3 and behind the paint sprayed from the spray gun 15 of the automatic painting machine 14 is sucked by the exhaust fan 24 together with the air-conditioned air.

− order filters 18, 188 and secondary filters 25°25
Only the coating 44 mist is captured by a.

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 automobile bodies W are carried into the painting room 3 through the entrance 3a, and the four automobile bodies W are then transported to the automatic painting machine 14 arranged on both sides of the painting chamber 3. It has been.

At this time, the paint is blown off by the spray gun 15 to form a paint film. In this way, the four automobiles W are conveyed by the conveyor 10, the paint is blown off, the painting is completed, and the automobiles are conveyed from the outlet 3b of the painting room J to the next process.

Then, when the trolley 11 for painting the four automobiles W is transported to the automatic painting machine 14.

Both 11 of -order filter 18.18a! The oil portions 20, 2 (Ia) of the frame plates 19, 19a provided on the II side cover the tip of the exhaust duct 23, and the oil portions 20, 2 (Ia cover the tip of the exhaust duct 23, and the oil portions 20, 2) of the frame plates 19, 19a provided on the II side cover the distal end of the exhaust duct 23.

Out) 7-24 is activated. At the same time, automatic painting machine 14
While the paint is sprayed from the spray gun 15,
Most of the /4! 1f is applied to the surface of the body W. And some paints are self-made! It scatters as a mist in the Kamaso-ko 3 without coating even one surface of the III small body W, but due to the operation of the discharge fan 24 (41
A part of the air supplied to the storage chamber 3 is always sucked into the exhaust duct 23, and the mist inside the storage chamber 3 is passed through the primary filters 18, 18 together with the sucked air.
Pass through a.

At that time, r4! Most of the decay mist is filtered by the -order filter 18.
．． When captured by 18a, the -order filter 1
All of the coating mist that is not captured by 8.18a is captured when it passes through the secondary filter 25.25a of the discharge duct 23. Then, the currency mist is removed and r+'
J Purified Violet 1. Gastric air passes through the exhaust duct 23 and is exhausted to the outside. On the other hand, most of the conditioned air supplied into the painting room 3 is sucked into the +Jl air chamber 4 through the screen 6 by the operation of the exhaust fan 17, and is also passed through the exhaust duct t-16'eijll. It is discharged to the outside.

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

As explained below, in the method of painting an automatic utility body, etc. and the painting station thereof according to the present invention, when painting the surface of the object to be painted, such as an automobile, the paint mist scattered in the painting room is The paint mist is captured forcibly by a primary 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 discharge duct. Since it can be done in a dry manner, it has the effect of reducing the pressure loss of the conditioned air due to exhaust compared to the conventional wet painting method that uses 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, the paint mist generated in the painting room is captured by the primary filter detachably installed on the nine trucks and the secondary filter installed in the TJF outlet duct. This has the effect of reliably removing and filtrating the mist from the conditioned air discharged to the outside.

[Brief explanation of drawings]

Figure 1 shows the paintworks of four automobiles, etc. according to the present invention. ．．
1Il11 is a front view shown in FIG. 3 is an enlarged sectional view within the circle A in Fig. 1, Fig. 4 is an enlarged sectional view taken along line IV-IV in Fig. 3, and Fig. 5 is a cutaway of conventional dressing devices for four automobiles, etc. FIG. 1...painting booth, 2...air supply room, 3...painting room. 3a...person 1j, 3b...out 0.4...fJF air chamber. 5...Filter, 6...Bamboo shoots, 7...Air supply duct. 8...Air supply fan, 9...Air conditioner. 10... Conveyor, 11... Trolley +' 2...
Benefits. 13.13a-Rail, 14-Self/Assistant Painting. 15...Spray gun, 16...Exhaust duct. l7・Exhaust fan, 18.18a・Filter. 19, 19a... Frame board, 20, 2Ua... Other parts. 21... Supporting member, 22 - Holding member. 23...Exhaust duct, 23a, 23b...Intake port. 24...Exhaust fan, 25,258...Secondary filter. 26.268 - Partition plate applicant Toyota Motor Corporation Figure 3

Claims (2)

[Claims] (1) A painting method in which objects to be painted, such as four automobiles, are placed on a trolley in the painting room of a painting booth, and the objects are sprayed with paint by an automatic paint machine while being continuously conveyed by a conveying device. , when spraying paint onto the surface of the object to be painted, such as four automobiles, by the automatic painting machine, the surface of the object to be painted 1ri
Without applying paint to i. Painting is carried out while forcibly trapping the paint mist that scatters in the painting room using a primary filter that is detachably attached to 8 cars and a secondary filter that is installed on the 'FtAi side of this secondary filter. Car 4 characterized by
How to paint the body etc. (2) @In the painting room of the installation booth, there is a self-1J411. L([4
A painting station is provided with a conveyance device ξ for conveying a trolley on which objects to be painted such as cars are placed, and an automatic coating machine is installed on the side of this conveyance device, the painting station comprising: A primary filter that captures the paint mist scattered in the painting chamber is removably attached to the side of the trolley on which objects to be painted are placed, and the primary filter is installed in front of the automatic coating machine in the painting chamber,
1. Coatings for automatic utility bodies, etc., characterized in that a discharge duct is provided on the travel path of the secondary filter, which is cut into 2. Place.