JPH01284369A - Automatic painting method for automobile body - Google Patents

Abstract

PURPOSE:To reduce an initial cost by painting both ends of the pillar parts and horizontal plane of a body with a variable atomization electrostatic painter which can move vertically and horizontally. CONSTITUTION:Both side faces of a body W are painted by the side part atomization electrostatic painters 1 in a conventional manner and the front surface is painted by the upper part atomization electrostatic painter 2. The variable painter 6 which is movable vertically and horizontally is held by arms 8 having joints 7 and is provided to a carriage 5 to which the side part atomization electrostatic painters 1 are fixed. Both end parts of the hood having a step are, therefore, painted by the variable painter 6 which is moved downward by the joints 7. The pillar parts are painted as the carriage 5 is retreated and the painter 6 is displaced by the joints 7 so as to head toward the pillar parts. The two end parts of the horizontal plane of the body W and the pillar parts are, therefore, commonly painted, by which the initial cost is reduced; in addition, the painting of both end parts of the horizontal plane having a step and the central part is uniformized.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for automatically painting an automobile body by atomized electrostatic painting.

<Prior art> In the conventional method of automatically painting automobile bodies conveyed through a painting line using atomized electrostatic coating, as shown in FIG. The upper surface of the body W, such as the engine room hood, roof, and trunk lid, was painted using a horizontally moving upper exposure electrostatic coating fI12, and the pillar part was painted using a fixed pillar atomizing electrostatic coating machine 3. It's being painted.

<Problems to be Solved by the Invention> The conventional coating method described above has the following problems. That is, as shown in FIG. 1, the hood and the roof have different areas, so paint drips and rough readings are likely to occur, and there is a step between the center and both ends 4a of the hood 4. Therefore, the distance interval from the upper atomizing electrostatic coating machine 2 is 1
11 and 112, uneven coating will occur under the same coating conditions, and the finished appearance will not be uniform due to occurrence of sagging, rough coating, etc.

Furthermore, coating the pillar portion requires a special atomizing electrostatic coating machine 3, which increases the cost.

Means for Solving the Problems> The present invention has solved the above-mentioned conventional problems, and the present invention provides a method for automatic painting of automobile bodies conveyed through a painting line. The machine coats both sides of the body, the top surface of the body is painted by an upper atomizing electrostatic coating machine that moves horizontally, and the pillars and both ends of the horizontal plane are coated with variable atomizing electrostatic coating that can move vertically and horizontally. It was painted using a machine.

Effect> By the above method, it is possible to coat the pillar part of the body and both ends of the horizontal surface with the T1 [variable atomization electrostatic coating machine], thereby improving the low acid cost and the quality of the coating finish.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, W is the body of a car that transports the painting line. 1 is a 1TI 1 part atomization station for painting both sides of the body W; a painting station! (hereinafter abbreviated as side coating machine), and is fixed to a trolley 5 that moves forward and backward relative to the side surface of the body W on the floor.

Reference numeral 2 denotes an upper atomizing silent coating machine (hereinafter referred to as the upper coating machine) for coating the upper surface of the tenon W, which is horizontally moved by a generally known guide device (not shown).

The body W is painted by the side painting RI and the upper painting machine 2.
Automatic painting of both sides and the top surface is the same as in the conventional method.

In the method of the present invention, a variable atomization electrostatic coating machine 6 (
(hereinafter abbreviated as variable coating machine) is installed, and this variable coating machine 6
Both ends of the horizontal surface of the body W as well as the pillar portion are also coated.

As a variable means for vertical and horizontal movement of the variable coating machine 6, the variable coating machine 6 is held by an arm 8 having a joint 7 which is controlled to bend and extend.

Therefore, in the present invention, painting of both sides of the body W is carried out by moving the trolley 5 forward toward the body W and using the side coating machine 1 in the conventional manner, and horizontal surfaces such as the roof and hood are painted by moving the upper coating machine 2 horizontally. do.

Here, both ends 4a of the hood 4 with a step shown in FIG.
As shown in FIG. 1, the variable coating machine 6 is moved downward by the joint 7 of the arm 8 to perform coating.

In addition, when painting the pillar part, as shown in Figure 2,
The trolley 5 is moved backward, and the variable coating machine 6 is displaced by the joint 7 of the arm 8 to apply the coating.

Note that the pillar portion means a front pillar, a center pillar, and a quarter pillar.

<Effects of the Invention> As described above, the method of the present invention includes, in addition to the conventional side atomization coating machine and top atomization coating machine, a variable atomization electrostatic coating machine that can move vertically and horizontally. Since the upper atomizing paint machine is used to paint both ends of the horizontal body where there is a step and the pillar area, where the required coating cannot be obtained with the upper atomizing paint machine, the painting of both ends of the horizontal body surface is uniform with the painting of the central part. This makes it possible to achieve a high-quality finish with a high appearance, reduce installation costs by painting different parts, and make it easier to deal with multi-piece types or changes to the main type.

[Brief explanation of the drawing]

1 and 2 are front views showing an embodiment of the present invention, and FIG. 3 is a front view showing an embodiment of the invention.
The figure is an explanatory diagram of the conventional method, and FIG. 4 is an explanatory diagram of problems caused by the conventional method. 1... Side atomizing electrostatic coating machine, 2... Top atomizing electrostatic coating machine, 5... Trolley, 6... Variable atomizing electrostatic coating machine. Patent applicant Kanto Jidosha Kogyo Co., Ltd. Representative
Hiraibe Figure 1 Figure 3

Claims (1)

[Claims] In automatic painting of automobile bodies transported through a painting line, both sides of the body are painted by a fixed side atomizing electrostatic coating machine, and the top surface of the body is painted by a horizontally moving upper atomizing electrostatic coating machine. An automatic coating method for an automobile body, characterized in that a pillar part and both ends of a horizontal surface are coated by a variable atomization electrostatic coating machine that can move vertically and horizontally.