JPH06226167A - Vehicle fender coating apparatus - Google Patents

Abstract

PURPOSE:To certainly prevent the adhesion of a coating material to the surface of a car body at the time of the coating of the flange part of an arch part by providing an air nozzle forming an air mask on the surface of the car body and the guide integrally revolved along with the air nozzle to recover the paint over-sprayed on the outside of the flange of the arch part from a coating gun. CONSTITUTION:In a coating apparatus 5 for coating the flange 4 of the arch part of a vehicle fender 3, a coating gun 34 supported in a revolvable manner around the central axis and spraying a coating material to the flange 4 of the arch part of the vehicle fender 3 from the interior of the fender 3 and the air nozzle 36 integrally revolved along with the coating gun 34 and spraying air from the outer surface of the fender 3 so as to be opposed to the spray direction of the coating gun 34 to form an air mask on the surface of a car body are provided. The coating material over-sprayed on the outside of the flange 4 of the arch part from the coating gun 34 is recovered by the groove part 40 of the guide 38 integrally revolved along with the air nozzle 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle fender coating apparatus, and more particularly to a vehicle fender coating apparatus for coating an arch flange of a vehicle fender.

[0002]

2. Description of the Related Art A conventional vehicle coating apparatus is disclosed, for example, in Japanese Utility Model Laid-Open No. 1-120964. This vehicle coating device is for painting the inside of a wheel house of a vehicle, and a guard plate that can reciprocate along the spray direction of the air gun body that sprays paint is installed near the air gun body. The tip of the plate penetrates into the spray to prevent overspray.

[0003]

According to the conventional vehicle coating apparatus disclosed in the above publication, since the guard plate prevents the overspray of the coating material, the coating material scattered in the air is not covered by the vehicle body. It can be prevented from adhering to the surface. On the other hand, it is possible to apply the above conventional vehicle coating device even when painting the arch flange of the vehicle, but the arch flange is close to the vehicle body surface and the painting width is very narrow, so it is accurate. It is impossible to reliably prevent overspray.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a vehicle fender coating apparatus capable of reliably preventing paint from adhering to the vehicle body surface when coating an arch flange of a vehicle fender.

[0005]

In order to achieve the above object, the present invention is a vehicle fender coating apparatus for coating an arch flange of a vehicle fender, the apparatus being pivotably supported about a central axis, and the vehicle fender arch. A coating gun that sprays paint from the inside of the fender against the flange of the part, and air is sprayed from the outer surface side of the fender so that it turns integrally with the coating gun and faces the spray direction of the paint gun. It is characterized by having an air nozzle forming an air mask, and a guide for swirling integrally with the air nozzle and collecting the paint which is oversprayed from the coating gun to the outside of the arch flange.

In the present invention thus constructed,
When paint is sprayed from the paint gun from the inside of the fender to the arch flange of the vehicle fender, air is sprayed from the outer surface side of the fender so that the air nozzle faces the spray direction of the paint gun and an air mask is applied on the vehicle body surface. And the guide collects the paint that is over-sprayed outside the arch flange. Therefore, according to the present invention, it is possible to reliably prevent the paint from adhering to the vehicle body surface when the arch flange of the vehicle fender is painted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a front view showing an embodiment of a vehicle fender coating apparatus of the present invention, and FIG. 2 is a side view showing an embodiment of a vehicle fender coating apparatus of the present invention. As shown in FIGS. 1 and 2, reference numeral 1 denotes a vehicle painting line, and a vehicle 2 is arranged on the vehicle painting line 1. Here, 3 is a fender, and the fender 3 has an arched flange 4 formed at the outermost portion.

On both sides of the coating line 1, vehicle fender coating devices 5 are arranged, respectively. In Figure 1,
Only the vehicle fender coating device 5 arranged to the right of the coating line 1 is shown. This vehicle fender coating device 5
Is configured as follows. 6 is a support base,
A screw shaft 7 is attached to the upper portion of the support base 6 in the direction of the coating line 1, and guide shafts 8 are arranged above and below the screw shaft 7, respectively. Further, the first frame 10 is arranged on the upper portion of the support base 6,
The screw shaft 7 and the guide shaft 8 are inserted into the first frame 10 and can move along the coating line 1. A motor 12 is attached to one end (left side in FIG. 2) of the screw shaft 7, and the screw shaft 7 is rotated by the motor 12, so that the first frame 10 has the same moving speed of the vehicle on the assembly line 1. Assembly line 1 at speed
Move along.

Two vertical through holes 14 are formed in the first frame 10, and the guide shafts 18 of the second frame 16 are inserted into the through holes 14 of the first frame 10, respectively. It is movable. Four arms 20 are rotatably attached to the lower end of the second frame 16, and a painting robot main body 22 is rotatably attached to the lower ends of these four arms 20. Has been.

A first cylinder 24 is attached to the first frame 10, a lower end of the first cylinder 24 is fixed to a flange 26 provided on the first frame 10, and an upper end of the first cylinder 24 is fixed to a flange 26. It is fixed to the upper part of the 2 frame 16. As a result, by driving the first cylinder 24, the second frame 16 is moved to the first frame 10.
It can be moved up and down along the guide shaft 18 of. At that time, the arm 20 and the painting robot main body 22 move vertically together with the second frame 16.

Further, another guide shaft 28 is vertically provided inside the second frame 16, and a second cylinder 30 is mounted on the guide shaft 28. A lower end portion of the second cylinder 30 is fixed to a lower portion of the second frame 16, an upper end portion thereof forms a moving end, and is connected and fixed to an upper end portion of the drive arm 32. The lower end of the drive arm 32 is fixed to a substantially central portion (point A in FIG. 1) of a frame (not shown) that connects the two arms 20 located inside. As a result, by extending the second cylinder 30 and raising the upper end portion thereof, the drive arm 32 rises and the inside of the arm 20 is pulled up. At this time, the arm 20 rotates clockwise about the point B in FIG. 1 as a fulcrum as shown by the chain double-dashed line, and the tip of the painting robot main body 22 moves into the fender 3 of the vehicle to perform painting. It is placed at the position where the operation is performed.

A coating gun 34 for spraying paint, an air nozzle 36 for spraying air to form an air mask (shown in FIG. 2, not shown in FIG. 1), and a coating gun 34 are provided at the tip of the coating robot body 22. Guide 38 for collecting paint that is over-sprayed from the outside to the arch flange 4
(Shown in FIG. 1 and not shown in FIG. 2) are integrally attached.

As shown in FIGS. 1 and 2, the coating gun 34
Is rotatably supported around the central axis at the tip of the painting robot body 22 and sprays paint from inside the fender onto the arch flange of the vehicle fender. Here, the portion where the paint is sprayed by the coating gun 34 is the portion from C to D (see FIG. 2) of the flange 4. Figure 3
4 is a front view showing an air nozzle and a guide, and FIG.
FIG. 6 is a side view showing an air nozzle and a guide.

As shown in FIGS. 1 to 4, the air nozzle 36 swivels integrally with the coating gun 34 to rotate the coating gun 34.
The air mask is formed on the vehicle body surface by spraying air from the outer surface side of the fender 3 so as to be opposed to the spray direction (see FIG. 1). This air nozzle 36
Has two nozzles, and the spray direction of these two nozzles is the vehicle body surface side of the flange 4 onto which the paint is sprayed by the coating gun 34. The guide 38 uses the air nozzle 36.
It is for collecting the paint which is swung integrally with the above and is over-sprayed to the outside of the arch portion flange 4 from the above-mentioned painting gun 34, and the groove portion 4 for collecting the paint inside thereof.
It has 0. Therefore, the guide 38 is arranged close to the arch flange 4, and its upper end is positioned so as to contact the spray portion of the air nozzle 36.
Therefore, the paint that is oversprayed from the coating gun 34 to the outside of the arch flange 4 is deflected by the air nozzle 36 toward the guide 38, and the oversprayed paint is collected by the groove 40 of the guide 38.

Next, the operation will be described. First, the coating robot main body 22 having the coating gun 34, the air nozzle 36, and the guide 38 at its tip is normally arranged at the lower outer position shown by the solid line in FIGS. 1 and 2. At this time, the coating gun 34, the air nozzle 36, and the guide 38 are also arranged at the lower outside position shown by the solid line. By arranging the coating robot main body 22, the coating gun 34, the air nozzle 36, and the guide 38 at the lower outside position in this way, when a vehicle that does not need to perform coating work flows into the coating line 1, it is possible to make contact with the vehicle. This is to prevent it from becoming an obstacle.

Next, when the painting work is started, the motor 12 is operated and the screw shaft 7 is rotated. As a result, the first frame 10 moves leftward in FIG. 2 in synchronization with the painting line. At that time, by raising the second cylinder 30, the painting robot main body 22, the painting gun 34, the air nozzle 36, and the guide 38 are moved inward through the drive arm 32 and the arm 20. At the same time, the first cylinder 24 is driven to move the second frame 16 upward along the guide shaft 18 of the first frame 10, and the coating robot main body 22, the coating gun 34, the air nozzle 36, and The guide 38 is moved upward. As a result, the coating robot main body 22, the coating gun 34, the air nozzle 36, and the guide 38 are not shown in FIGS.
It is arranged at the inner upper position indicated by the two-dot chain line.

After that, the spray direction of the coating gun 34 is made to face the portion of the flange 4 from C to D (see FIG. 2), and spraying of the paint is started. At this time, the air nozzle 36 sprays air from the outer surface side of the fender 3 so as to turn integrally with the coating gun 34 and face the spray direction of the coating gun 34 to form an air mask on the surface of the vehicle body (FIG. 1). reference). The guide 38 swivels integrally with the air nozzle 36 and collects the paint, which is oversprayed from the coating gun 34 to the outside of the arch flange 4, in the groove 40.

After the completion of the painting work, the first cylinder 24 and the second cylinder 30 are driven in the opposite direction to the above, whereby the painting robot main body 22, the painting gun 34, the air nozzle 36 and the guide 38 are moved as shown in FIG. In FIG. 2, it is returned to the lower outside position shown by the solid line. Next, another embodiment of the present invention will be described with reference to FIGS.
In this embodiment, six air nozzles 50 are arranged toward the coating gun 34. With this air nozzle 50, a planar air mask is formed over a wider area on the vehicle body surface. As a result, the combination of the air nozzle 50 and the guide 38 can more effectively prevent the overspray from the coating gun 34.

[0019]

As described above, according to the vehicle fender coating apparatus of the present invention, it is possible to reliably prevent the coating material from adhering to the vehicle body surface when the arch flange of the vehicle fender is coated.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a vehicle fender coating apparatus of the present invention.

FIG. 2 is a side view showing an embodiment of a vehicle fender coating apparatus of the present invention.

FIG. 3 is a front view showing an air nozzle and a guide.

FIG. 4 is a side view showing an air nozzle and a guide.

FIG. 5 is a front view showing an air nozzle and a guide according to another embodiment of the present invention.

FIG. 6 is a side view showing an air nozzle and a guide according to another embodiment of the present invention.

[Explanation of symbols] 1 coating line 2 vehicle 3 fender 4 arch flange 5 vehicle fender coating device 6 support 10 first frame 16 second frame 20 arm 22 coating robot body 24 first cylinder 30 second cylinder 34 coating Gun 36 Air nozzle 38 Guide 40 Groove

Claims (1)

[Claims] 1. A coating device for a vehicle fender that coats an arch flange of a vehicle fender, wherein the painting gun sprays paint from the inside of the fender to the arch flange of the vehicle fender so as to be pivotable about a central axis. And an air nozzle that sprays air from the outer surface of the fender to form an air mask on the vehicle body surface so that it swirls integrally with this painting gun and faces the spray direction of the paint gun, and swivels integrally with this air nozzle. A coating device for a vehicle fender, comprising: a guide for collecting paint that is over-sprayed from the above-mentioned painting gun to the outside of the flange of the arch portion.