JPH0386281A - Paining and drying method for automobile body - Google Patents

Abstract

PURPOSE:To smooth painted surfaces by drying a vehicle body and caps and the like while rotating the same after painting. CONSTITUTION:Parts are assembled to each other, by which the vehicle body 1 and the caps and the like 2 are formed. The vehicle body and caps and the like respectively separately pass a pretreating booth 5, a draining and drying furnace 6, a primer coating booth 7, a drying furnace 8, a sealer booth 9, a drying furnace 10, a finish coating booth 11, and a drying furnace 12 and are respectively subjected to painting treatments in a painting stage PS. The vehicle body 1 imposed on a truck 16 is rotated by the operation of a driving source 20 and the caps and the like 2 imposed on a truck 31 are rotated by traveling of the truck 31, in the drying furnace 12 after the passage through the finish coating booth 11 in a painting stage PS. The automation of the painting and the painting of the inside of the vehicle body are facilitated in this way.

Description

Detailed Description of the Invention A8 Purpose of the Invention [1) Industrial Field of Application The present invention is directed to coating an automobile body and lids such as doors and bonnets to be attached to the body separately and then drying them. This article relates to methods for painting and drying automobile bodies.

(2) Prior Art Conventionally, there is a vehicle disclosed in Japanese Patent Application Laid-Open No. 157873/1983, in which the vehicle body and the lids are painted separately.

(3) Problems to be Solved by the Invention In the conventional method described above, it is possible to obtain a smooth and uniform painted surface by painting the lids in a horizontal position. However, the car body generally has almost vertical outer surfaces such as rear fenders and pillars that are pressed bottom-shaped integrally with it, and if the car body is painted in a horizontal position, the paint will not be applied to the rear fenders and pillars. It was difficult to smooth the painted surface due to gravity flow.

On the other hand, there is also a vehicle body that is separated into its frame members and outer panel parts such as fenders, and the frame members and outer panel parts are painted separately (Japanese Patent Laid-Open No. 107782/1982). With this method, it is possible to smooth the painted surface of the rear fender, but it is still difficult to smooth the painted surface of the pillars.

Furthermore, in the technique disclosed in Japanese Patent Application Laid-Open No. 63-178871, the painted surface of the car body is smoothed by attaching a kimono to the car body and rotating the car body. Regardless of the rotating operation, attaching kimonos to the car body requires fixing work to reliably maintain the condition, and furthermore, it is difficult to automate painting inside the car body.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for painting an automobile body, which smooths the painted surfaces of the vehicle body and kimono, and further automates the painting and facilitates painting the inside of the vehicle body. With the goal.

1i4 of the B1 Invention (1) Means for Solving the Problems The method of the present invention is characterized in that the car body and kimono are dried while being rotated after being painted.

(2) Effect According to the above method, by rotating the car body and kimono during drying, not only the flow of paint is suppressed and the painted surface is smoothed, but also the car body and kimono are separated. This makes it easier to automate painting and paint the inside of the car body.

(3) Example Hereinafter, an example of the present invention will be explained with reference to the drawings. ! In 1, the manufacture of an automobile body is carried out through four processes in sequence: a pressing process (not shown), a welding process WS1, a painting process PS, and an assembly process MS. Main body 1
The kimono 2 to be attached to the vehicle body 1 moves along the main line 3 and the supply line 4, respectively.

In the painting process PS, a pretreatment booth 5, a draining drying oven 6, an undercoating booth 7, a drying oven 8, a sealer booth 9, a drying oven 10, a top coating booth 11, and a drying oven 12 are arranged in this order. will be established.

Further, in the assembly process MS, an al, IIm\i section 13 for applying 11 outfits to the vehicle body l, and a 211* section 14 for applying m outfits to the kimono 2 are installed in parallel.

Incidentally, during movement along the main line 3, the vehicle body 1 is conveyed in the drying oven 12 while rotating around a horizontal wheel line by a trolley 16 shown in FIG.

In the drying oven 12, rails 15 are laid along the main line 3, and the cart 16 is movable on the rails 15. The bogie 16 is longer than the entire length of the vehicle body l, and has struts 17 at both longitudinal ends thereof.
18 will be erected.

Moreover, the front support column 17 along the running direction 27 of the trolley 16
A power source 20 such as an air motor with a horizontal rotary wheel 19 protruding toward the rear side along the running direction 27 is provided at the upper end of the column 18 on the rear side along the running direction 27. The proximal end portion of a rotary ring 21 whose axis is the same as the axial extension line of the rotation $11119 is rotatably supported.

On the other hand, at the front end of the vehicle body 10 in the front-rear direction, the rotating shaft 19 is
A bracket 22 is provided in advance to be detachably attached to the tip of the rotating shaft 21, and a bracket 23 is provided in advance to be detachably attached to the tip of the rotating shaft 21 at the rear end of the vehicle body 1 along the longitudinal direction. Therefore, by attaching both brackets 22 and 23 to the rotating shafts 19 and 21 and activating the power source 20, the vehicle body 1 is rotated about a horizontal axis along the longitudinal direction thereof.

Further, an endless chain 24 that can run along the rails 15 is disposed below the truck 16 to drive the truck 16, and the chain 24 has an engaging R25 provided on the lower surface of the truck 16. A button 26 that engages with is fixedly installed. Therefore, as the chain 24 runs, the button 26
By pushing the engaging portion 25 , the truck 16 , that is, the vehicle body 1 moves forward in the traveling direction 27 .

In Figure 3, the above-mentioned kimono 2 is Bonnen) 2
a s) Lunk lid 2b, left and right pair of front doors 2C
, 2d, a pair of left and right rear doors 2e, 2f, and a pair of left and right fenders 2g, 2h, and these kimonos 2 are transported by a trolley 31 in the drying oven 12 during movement along the supply line 4.

The trolley 31 can run on a pair of rails 32.32 laid along the supply line 4, and is driven forward along the running direction 33 on the cough rails 32.32 by a drive means (not shown). Driven.

Cylindrical supports 34 and 34 are erected at the front and rear ends of the truck 31 along the traveling direction 33.

Support arms 35 protrude outward in the radial direction at four locations vertically spaced apart from each other in the middle of these columns 34, 34.
are protruding from each other, and the kimonos 2, 36 are rotatably supported by the supporting arms 35...
That is, a bonnet 2a1, a trunk lid 2b, a pair of left and right front doors 2c, 2d, and a pair of left and right rear doors 2e, 2.
A support member 37 for individually and removably supporting f and the pair of left and right fenders 2g and 2h is provided.

In FIG. 4, axles 38, 38 are rotatably mounted at both ends along the running direction 33 at the bottom of the truck 31, and wheels 39, 39 moving on the rails 32, 32 are used to move the wheels 39, 39 on the rails 32, 32. !138. They are fixed to both ends of 38 respectively. Furthermore, the intermediate portions of the axles 38.38 rotatably pass through gear boxes 40.40 fixed to the lower part of the truck 31, and within the gear boxes 40.40, the intermediate portions of the axles 38.38 A bevel gear 41 is fixed to each.

On the other hand, a rotating shaft 42 is rotatably housed and arranged in each of the pillars 34 and 34, and a bevel gear 43 that meshes with the bevel gear 41 in the gear box 40 is fixed to the lower end of the rotating ring 42. Ru. Therefore, the trolley 310
Each rotating shaft 42 is driven to rotate as the vehicle travels.

Fifth! ! 1, bevel gears 44 are fixed to portions of the rotating shaft 42 corresponding to the supporting arms 35, and the bevel gears 44... are fixed to the inner end of the rotating shaft 36 supported by the supporting arms 35. A bevel gear 45 that meshes with is fixed to each. Therefore, each rotation shaft 36, that is, the support member 37, is driven to rotate around the horizontal axis as the trolley 31 moves.

Next, to explain the operation of this embodiment, parts obtained by pressing a steel plate in a press process are welded in a welding process WS.
Then, they are assembled to each other by welding or bonding with a thermosetting adhesive to form the vehicle body 1 and the lid [2], respectively.

In the painting process PS, the car body 1 and the kimono 2 are placed in a pretreatment booth 5, a draining drying oven 6, an undercoating booth 7, a drying oven 8,
Sealer booth 9, drying oven 10. The paint passes through a top coating booth 11 and a drying oven 12 separately and is subjected to coating treatment.

Moreover, in this painting process PS, in the drying furnace 12 after passing through the top coating booth 11, the car body main body 1 placed on the trolley 16 is rotated by the operation of the drive source 20,
The kimonos 2 placed on the cart 31 are rotated by the running of the wave cart 31. By rotating the car body 1 and the kimono 2 during drying after the top coat treatment in this way, the flow of the paint due to gravity is suppressed, the painted surface is smoothed, and the quality of the paint is made more homogeneous. . Moreover, since the vehicle body 1 and the clothes 2 are separated, it becomes easy to paint the interior of the vehicle body 1, and automation of the painting becomes easy.

After the painting process in the painting process PS, the vehicle body 1 is brought to the 111iI*B13 of the assembly process MS, and the kimonos 2 are brought to the 211th clothing department 14, where they are donated. Then, the kimono 2 after the M mounting is attached to the vehicle body 1 after the U mounting is completed, and the manufacturing of the vehicle body is completed.

Effects of the C0 Invention As described above, according to the present invention, since the car body and kimono are dried while being rotated after being painted, it is possible to suppress the flow of paint due to gravity and smoothen the painted surface. At the same time, the coating quality of the car body and the kimono can be made uniform, and since the car body and the kimono are separated, it is possible to automate the painting and to easily paint the inside of the car body.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a manufacturing process diagram of the vehicle body, FIG. 2 is a diagram showing the configuration for transporting the vehicle body during drying, and FIG. 3 is a diagram showing a kimono during drying. Diagram 41 showing the configuration for transporting items! I is the 31st! 5 is a partially omitted side view taken along line IV-IV of I, and FIG.
It is a side view with a part omitted along a via. 1... Vehicle body, 2... Kimono, 2a... Bonnet, 2 b-) Rank lid, 2c, 2d, 2e, 2
f...Door, 2g, 2h...Fender Patent applicant Honda Motor Co., Ltd. Representative patent attorney Kendojin Ochiai - Akira

Claims (2)

[Claims] (1) Automobile body (1) and lids such as doors and bonnets (2) to be attached to the vehicle body (1)
A method for painting and drying an automobile body, in which the body (1) and the lid (2) are dried while being rotated after being painted. Drying method. (2) The lids (2) are doors (2c, 2d, 2e,
2f), bonnet (2a), fender (2g, 2h)
and a trunk lid (2b).