JP2003305407A - Coating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the futile use of a coating material with the suppression of coating man-hour when a face part 3 of a front bumper 1 and a traction hook cover 19 covering an opening part 7a for a traction hook formed on the front bumper 1 are simultaneously coated with the same coating material. <P>SOLUTION: A 2nd mounting flange 15 extending to the rear side of a car body is provided on a horizontal wall part 9 of the face part 3 of the front bumper 1. After the front bumper 1 is turned upside down and fixed to a transporting carriage, a nail part 25 of the traction hook cover 19 is inserted into a slit 31b of a set fixture 31 and further inserted into a mounting hole 15a of the 2nd mounting flange 15. After that, the set fixture 31 is folded, the nail part 25 is inserted into the slit 31c and the traction hook cover 19 is held by the 2nd mounting flange 15. Next, the coating material is sprayed toward the face part 3 and the traction hook cover 19 by a spray coating gun to be applied. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a coating method for simultaneously coating a plurality of objects to be coated with the same coating material.

[0002]

2. Description of the Related Art Conventionally, a bumper of an automobile has been painted with a spray painting gun. On this occasion,
In general, the face part of the bumper is used as a painting area where painting is applied, while the mounting flange to the vehicle body which is integrally molded continuously with the face part is an area where painting is unnecessary (painting unnecessary area). . Since this mounting flange is an inconspicuous part after assembly to the vehicle body, it does not matter if the paint adheres to the mounting flange when painting the face part,
For this reason, masking is omitted and painting is performed.
In other words, in order to form a uniform coating film on the entire painted surface of the face part, it is necessary to spray the paint over a wider area than the painted surface, and the paint that has scattered at this time can also be applied to a part of the mounting flange. Will be attached.

Further, for example, as disclosed in Japanese Utility Model Laid-Open No. 5-559, in which a tow hook is arranged inside the vehicle body of a bumper, an opening is made in a portion of the face portion corresponding to the tow hook. There is a part in which the opening is closed by a cover member that is a separate member when the tow hook is not used.

[0004]

By the way, if a separate cover member is provided on the face portion of the bumper as in the latter conventional example (Actual No. 5-559), the face portion and the cover member are Two members (first and second objects to be coated) must be painted in the same color. However, when the cover member is applied to the face portion at the same time when the coating is performed, the paint enters the gap between the two members to fix the two members, which may result in uneven coating film thickness. However, if the adhered cover member is removed after the coating, the paint on the peripheral edge of the cover member or the peripheral edge of the opening may be peeled off, resulting in a problem of poor appearance. On the other hand, it is conceivable to paint the two members separately, but in such a case, the paint must be sprayed wider than the painted surface as described above, and the paint is wasted. The number is relatively large, and the number of painting steps is increased.

The present invention has been made in view of the above points, and an object thereof is to hold a second object to be coated when the first and second objects are simultaneously coated with the same paint. It is to devise a position and do painting work efficiently.

[0006]

In order to achieve the above-mentioned object, in the solution means of the present invention, the second object to be coated is held on a mounting flange formed in an unnecessary coating area of the first object to be coated,
The first object to be coated and the second object to be coated were coated with a spray coating gun.

Specifically, the invention of claim 1 is directed to a coating method for simultaneously coating a plurality of objects to be coated with the same paint. A first coated object having a coating area and a coating unnecessary area adjacent to the coating area, and a mounting flange integrally formed in the coating unnecessary area is prepared, and is attached to the mounting flange of the first coating object. After holding the second object to be coated by a setting jig so that the surface to be coated is oriented in substantially the same direction as the surface to be coated to the first object to be coated, the first and second objects to be coated are coated surfaces. Spray paint with a spray gun.

According to the above-mentioned method, after the second object to be coated is held by the setting jig on the mounting flange integrally formed in the unnecessary coating area of the first object to be coated, the first object to be coated and the second object to be coated are held. The painted body can be painted simultaneously with a spray painting gun. That is, since the second object to be coated is held in the unnecessary coating area of the first object to be coated, the second object to be coated can be coated without affecting the coating state of the first object to be coated, and At this time, since the mounting flange holding the second object to be coated is adjacent to the coating area of the first object to be coated, the paint that scatters to the second area is used to paint the second object to be coated. The painted body can be painted at the same time. As a result, it is possible to suppress the waste of paint and reduce the number of painting steps.

According to a second aspect of the present invention, in the first aspect of the present invention, the first object to be coated is a bumper for a vehicle, and an opening corresponding to a tow hook of a vehicle body is provided in a coating area of the bumper. It is assumed that the second object to be coated is a tow hook cover that covers the opening.

Thus, when painting the bumper of the vehicle having the tow hook cover set, the tow hook cover can be held by the bumper and painted simultaneously. That is, since the tow hook cover is relatively small, it can be easily held by the bumper, which allows the painting work to be performed more efficiently.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an automobile equipped with a front bumper (first body to be coated) 1 to be coated by the coating method of the present invention. First, the structure of the front bumper 1 will be described. The front bumper 1 is an injection-molded product made of a resin material, and as a whole, it has a U-shape with the rear side of the vehicle body open so as to wrap around the left and right sides of the front end of the vehicle body. As shown in FIG. 2, the face portion 3 has a body mounting portion 5 integrally formed at the lower end thereof, and the face portion 3 is a coating area for painting, while the mounting portion 5 does not require painting. It is considered to be a region.

The face portion 3 has a vertical wall portion 7 extending substantially vertically in the vehicle width direction, and a horizontal wall portion 9 extending substantially horizontally from the lower end edge of the vertical wall portion 7 toward the rear of the vehicle body. There is. On the rear end edge of the horizontal wall portion 9 of the vehicle body, there are formed ridge portions 9a protruding downward on both sides in the vehicle width direction. The ridge 9a
Has a rectangular cross section whose width dimension is longer than its protrusion height dimension.

The mounting portions 5 (only the right side of the vehicle body is shown) are provided on the left end side and the right end side of the horizontal wall portion 9 of the vehicle body, respectively. Since the left and right mounting portions 5 are similarly configured, the right side mounting portion 5 will be described in detail. The right side mounting portion 5 includes three mounting flanges 13, 15, 17 arranged side by side from the right end portion of the vehicle body to the left side. The first mounting flange 13 located at the right end of the vehicle body extends in a generally rectangular shape from the right end of the horizontal wall portion 9 toward the inside of the vehicle body, and a fastening member (not shown) to the vehicle body is provided at a substantially central portion thereof. The mounting hole 13a through which the () is inserted is formed. A second mounting flange 15 is provided on the left side of the first mounting flange 13 in the vehicle body, and a vehicle body mounting hole 15a is formed in a substantially central portion thereof. Further, on the vehicle body left side of the second mounting flange 15, a third mounting flange 17 formed in a relatively large rectangular shape is formed. The third mounting flange 17 is formed to be relatively thick from the lower end of the protruding portion 9a of the horizontal wall portion 9 to the upper end of the horizontal wall portion 9, and has mounting holes to the vehicle body near the left and right ends thereof. 17a, 17
a is formed.

Although not shown in the figure, a traction hook is attached to a frame member on the left side of the vehicle body located inside the vehicle body of the front bumper 1, and the vertical wall portion 7 of the front bumper 1 is correspondingly attached thereto. A substantially circular opening 7a is formed in the. When the tow hook is used, the opening 7 (not shown) is used.
While inserting a rope etc. from a and connecting it to the tow hook,
When not in use, the opening 7a is covered with the tow hook cover (second object to be coated) 19, and
The front of the vehicle body of the tow hook cover 19 is the face portion 3
Painted in the same color as.

The tow hook cover 19 is formed by injection molding a resin material, and as shown in FIG. 3, is provided on a substantially disk-shaped main body portion 21 and substantially the entire circumference of the peripheral portion of the rear surface of the main body portion 21 of the vehicle body. It has a peripheral wall portion 23 and a pair of claw portions 25 and 27 that engage with the peripheral edge of the opening 7a of the front bumper 1. The claw portions 25 and 27 are provided at the upper and lower end portions of the tow hook cover 19 attached to the front bumper 1, respectively. Of the pair of claw portions 25, 27, the upper claw portion 25 includes a rectangular piece portion 25a extending rearward from the vehicle body rear surface of the body portion 21 substantially perpendicularly to the rear surface, and a tip of the piece portion 25a. A projecting portion 25b having a triangular cross section that projects upward from the side, and a piece 25
A pair of wall portions 25 extending downward from both vehicle width direction edges of a.
It consists of c and 25c. Therefore, as shown in FIG. 3A, when the claw portion 25 of the tow hook cover 19 is viewed in the vehicle front-rear direction, its cross-sectional shape is a substantially U-shape. on the other hand,
Similarly to the upper claw portion 25, the lower claw portion 27 also has a piece 2
7a, a protrusion 27b protruding downward from the tip side of the piece 27a, and a pair of walls 27c, 27c extending upward from both vehicle width direction end edges of the piece 27a. In addition, a substantially U-shaped notch 29 is formed at the lower end of the main body 21 of the tow hook cover 19 so that a tool can be inserted at the time of removal from the front bumper 1.

Next, the procedure for coating the front bumper 1 and the tow hook cover 19 will be described. First, the front bumper 1 is turned upside down and fixed to a carrier vehicle (not shown). Then, the tow hook cover 19 is fixed to the second mounting flange 15 of the front bumper 1 by the setting jig 31. As shown in FIG. 4, the setting jig 31 is formed by forming a thin resin plate into a substantially rectangular shape, and the setting jig 31 is viewed in the front-back direction at a substantially central portion in the longitudinal direction (left-right direction in the drawing). Then, a thin hinge 31a formed in a straight line orthogonal to the longitudinal direction is provided, and at this portion, a portion 31f on one side in the longitudinal direction and a portion 31g on the other side can be folded so as to overlap each other.

A pair of slits 31b and 31c are formed near both ends of the setting jig 31 in the longitudinal direction so as to be substantially symmetrical with respect to the thin hinge 31a. When folded by 31a, both slits 31b and 31c substantially coincide with each other. That is, the slit 31b of the portion 31f on one side in the longitudinal direction of the setting jig 31 is formed in a U shape open to the other side,
On the other hand, the slit 31c of the portion 31g on the other side is formed in a U-shape that is open to one side.
The shapes of b and 31c are set so that the portions of the claw portions 25 and 27 of the tow hook cover 19 having a U-shaped cross section on the base end side of the projections 25b and 27b substantially match.

On the other hand, the second mounting flange 15 of the front bumper 1 will be described in detail. As shown in FIG. 2, the second mounting flange 15 has a substantially right-angled triangular shape, and the bottom side is a horizontal wall portion of the front bumper 1. 9 is continuous with the rear edge of the vehicle body, and the other two sides are formed so as to extend in the vehicle width direction and the vehicle body front-rear direction, respectively. The second mounting flange 15 is formed with a thin portion continuously from the middle portion of the left side edge of the vehicle body in the vehicle front-rear direction to the peripheral edge of the mounting hole 15a. The mounting hole 15 of the second mounting flange 15
“A” has a size into which the claw portion 25 of the tow hook cover 19 can be inserted.

The procedure for holding the tow hook cover 19 will be described with reference to FIG. 5. First, as shown in FIG. 5 (a), the tow hook cover 19 is opened with the setting jig 31 expanded substantially horizontally. Positioned above the set jig 31 so that the vertical direction of the vehicle body is the longitudinal direction of the set jig 31 and the front surface of the vehicle body is the upper side, and then the claw portion of the tow hook cover 19 on the vehicle body upper side. 25 is the slit 31 of the portion 31f on one side in the longitudinal direction of the setting jig 31.
Insert into b. At this time, the slit 31 of the setting jig 31
A rectangular piece 31d surrounded by b is pressed by the tip of the claw 25 and bends, and the projection 25b of the claw 25 is slit 31.
After passing b, the piece 31d returns to the original shape, and the claw 25 of the towing hook cover 19 just penetrates the slit 31b of the setting jig 31, and the towing hook cover 19 is held by the setting jig 31. It

Thereafter, as shown in FIG. 2B, the setting jig 31 is placed below the second mounting flange 15 of the front bumper 1 so that its longitudinal direction is the vehicle width direction of the front bumper 1. Positioning and inserting the claw portion 25 of the vehicle body upper side of the tow hook cover 19 into the mounting hole 15a of the second mounting flange 15. At this time, the dimension of the claw portion 25 in the vehicle body front-rear direction is set to be longer than the thickness of the second mounting flange 15, so that the projection 25b of the claw portion 25 is projected from the upper surface of the vehicle body of the second mounting flange 15. Become.

Next, the set jig 31 is folded so that the other side portion 31g overlaps the one side portion 31f, and the slit 31c on the other side in the longitudinal direction is secondly attached as shown in FIG. The flange 15 is inserted from above the vehicle body into the claw portion 25 on the vehicle body upper side of the tow hook cover 19 as in the case of the one side slit 31b. At this time, the piece 31e surrounded by the slit 31c is bent so as to press the claw 25, and thus the state in which the claw 25 is inserted into the slit 31c is maintained. That is, the setting jig 31 includes the part 31f on one side and the part 3 on the other side.
The second mounting flange 15 is sandwiched by 1g from below and above the vehicle body.
At this time, as shown in FIG. 6, the tow hook cover 19 is held by the front bumper 1 so that its painted surface faces in substantially the same direction as the painted surface of the horizontal wall portion 9.

After that, the carrier truck is carried into the coating booth. At this time, since the set jig 31 is made of a thin resin plate as described above, there is a possibility that the position of the towing hook cover 19 may be displaced due to the vibration of the transport carriage or the like, and the pulling hook cover 19 may overlap the coated surface of the face portion 3. On the other hand, in this embodiment, the front end of the vehicle body of the set jig 31 holding the tow hook cover 19 is formed so as to contact the rear side surface of the ridge 9a of the horizontal wall 9 of the front bumper 1. As a result, the setting jig 31 is the front bumper 1
The traction hook cover 19 will not be displaced from a predetermined position due to vibration of the carrier truck or the like.

Thereafter, the face portion 3 of the front bumper 1 and the towing hook cover 19 are spray-painted with a spray gun. At this time, the mounting flanges 13, 15 and 17 are parts that do not require painting, but since they are inconspicuous after assembly to the vehicle body, masking is omitted and painting work is performed. That is, in order to form a uniform coating film on the face portion 3, it is necessary to spray the coating material over a wider area than the coating surface. At this time, the coating material is attached to the mounting flanges 13, 15, 17 will be attached. In this embodiment, since the tow hook cover 19 is held by the second mounting flange 15, the paint that scatters toward the second mounting flange 15 is used when the face portion 3 is coated, and at the same time as the face portion 3 is coated. The tow hook cover 19 can be painted. Further, since painting is performed with the tow hook cover 19 removed from the opening 7a of the front bumper 1, the tow hook cover 19 and the front bumper 1 are not fixed by the paint, and the appearance can be improved.

Therefore, according to the coating method of this embodiment, when the face portion 3 of the front bumper 1 and the front surface of the vehicle body of the tow hook cover 19 are simultaneously coated with the same paint, the second mounting flange 15 of the front bumper 1 is coated.
Then, the tow hook cover 19 is held by the setting jig 31 so that the front surface of the vehicle body faces in substantially the same direction as the painted surface of the horizontal wall portion 9 of the face portion 3, and then the face portion 3 and the tow hook cover 19 are sprayed. Since the coating is performed by the coating gun, the tow hook cover 19 can be simultaneously coated with a good appearance without affecting the coating state of the face portion 3, and the waste of the coating material can be suppressed, whereby the coating work can be efficiently performed. it can.

Further, since the tow hook cover 19 is much smaller than the front bumper 1, the tow hook cover 19 can be easily held by the setting jig 31, and thus the vehicle to which the tow hook cover 19 is set. The bumper can be painted efficiently.

In the above-mentioned embodiment, the second object to be coated is explained as the tow hook cover 19, but the present invention is not limited to this, and the front bumper 19 is not limited to that made by injection molding. It may be formed by vacuum molding or blow molding.

Further, in the above-mentioned embodiment, the case where the invention is applied to the painting of the front bumper 1 for an automobile is explained, but the invention is not limited to this, and it is applied to the painting of the interior material of the vehicle such as the instrument panel. You may.

[0029]

As described above, according to the coating method of the first aspect of the present invention, when a plurality of objects to be coated are simultaneously coated with the same coating material, the mounting flange is integrally formed in the unnecessary coating area. 1 Prepare the object to be coated and attach it to the mounting flange.
After holding the second object to be coated with the set jig so that its coated surface faces in substantially the same direction as the first object to be coated, the first object and the second object to be coated are spray-coated with a spray gun. Since the paint is applied, the second paint can be applied at the same time by using the paint that scatters around when the paint area of the first paint is applied. This allows the painting work to be performed efficiently. You can

According to the second aspect of the present invention, the first object to be coated is a vehicle bumper, and the second object to be coated covers the opening formed in the bumper corresponding to the tow hook. Therefore, the bumper of the vehicle having the tow hook cover can be efficiently painted.

[Brief description of drawings]

FIG. 1 is a front view of an automobile equipped with a front bumper coated by a coating method according to an embodiment of the present invention.

FIG. 2 shows a front bumper, (a) is a plan view of a right side portion of the vehicle body as seen from below, and (b) is a sectional view taken along line AA in (a).

3A and 3B show a tow hook cover, FIG. 3A is a front view, and FIG. 3B is a sectional view taken along line BB in FIG.

FIG. 4 is a plan view of a setting jig.

FIG. 5 shows a procedure for holding the tow hook cover on the second mounting flange by the setting jig, (a) shows a state in which the tow hook cover is held on the setting jig, and (b) shows a claw of the tow hook cover. The part is shown inserted into the mounting hole of the second mounting flange, and (c) is a sectional view taken along the line CC in FIG. 6, showing a state in which the towing hook cover is completely held by folding the set jig. .

FIG. 6 is a view showing a state in which the tow hook cover is held.
(A) It is a corresponding figure.

[Explanation of symbols]

1 Front bumper (first coated object) 3 Face part (painting area) 5 Mounting part (painting unnecessary area) 7a opening 15 Second mounting flange 19 Tow hook cover (second coated object) 31 set jig

Claims (2)

[Claims] 1. A coating method for simultaneously coating a plurality of objects to be coated with the same paint, which has a coating area and an unnecessary coating area adjacent to the coating area, and a mounting flange is integrally formed in the unnecessary coating area. Prepared first coated body, and set the second coated body on the mounting flange of the first coated body so that its coated surface faces substantially the same direction as the coated surface of the first coated body. After being held by a tool, the coating method is characterized in that the coating material is spray-applied by a spray coating gun toward the coating surfaces of the first and second objects to be coated. 2. The vehicle body according to claim 1, wherein the first object to be coated is a bumper for a vehicle, and an opening corresponding to a tow hook of a vehicle body is formed in a coating area of the bumper. 2. The coating method, wherein the object to be coated is a tow hook cover that covers the opening.