JP2002316092A - Coating method of car body and apparatus for temporarily attaching slide door at the time of coating car body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating method of a car body, by which abnormal sound due to a roller is not generated and a fitting dimension is not changed even when a slide door fitting-adjusted in a sheet metal process is coated in a state that the slide door is supported on the car body, and an apparatus for temporarily attaching the slide door at the time of coating the car body. SOLUTION: A masking tape 60 is stuck to a horizontal rolling surface 21 of a center rail 20 supporting the slide door S on the car body 10 along the locus of a rolling main roller 301 of a center roller 30, a tentative roller 32 having a cylindrical part 321 having smaller diameter than the outside diameter of a regular roller 31 and a rolling part 322 formed outside of the cylindrical part 321 to have the same diameter as that of the regular roller 31 is attached thereto as a main roller 301, the fitting adjustment is performed in the sheet metal process and after a coating process, the masking tape 60 is stripped from the horizontal rolling surface 21 and the tentative roller 32 as the main roller 301 is changed to the regular roller 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for painting a vehicle body having a sliding door, in which the sliding door is temporarily attached to the vehicle body at the time of painting and the vehicle body and the sliding door are simultaneously painted, and the sliding door at the time of painting the vehicle body. In particular, the present invention relates to a painting method for a vehicle body in which a vehicle body in which a slide door is installed and adjusted using a temporary roller in a sheet metal process is painted in a painting process and then is replaced with a regular roller, and a slide door temporary attachment device.

[0002]

2. Description of the Related Art A vehicle body is provided with a so-called lid such as a door for opening and closing an opening for getting on and off or for loading / unloading or maintaining a load. This lid is
Since most of the area of the outer panel of the vehicle body is occupied, the gap between the vehicle body and the lid and the so-called construction of the continuous surface are important factors of the quality of the vehicle body. For example, explaining this construction with the example of the front door and the rear door of the car body, the front door is the front door with the fender panel and front pillar, the rear side is the gap between the rear door and the continuous surface, and the rear door is the front door The rear side adjusts the gap and the continuous surface with the quarter panel, and the upper ends of both doors adjust the gap and the continuous surface with the rocker panel on the floor.

[0003] The mounting adjustment is performed by changing the position of attachment to the vehicle body on the lid side, that is, the door side, to adjust the gap and the continuous surface with the vehicle body. Therefore, if this installation adjustment of the lid is performed after painting the vehicle body,
As the repair man-hour increases by damaging the painted surface,
In recent years, mounting adjustment of a lid is often performed in a sheet metal process of a vehicle body before painting.

When the lid is a slide door S, the slide door S is, as shown in FIG.
The upper rail 40 provided above the opening P and the lower rail 50 provided below, and the center rail 820 provided behind the opening P at an intermediate height between the upper rail 40 and the lower rail 50, respectively. -Upper roller 41, lower roller 51 and center roller 83 to be guided
0 and is mounted so as to slide substantially parallel to the front and rear direction with respect to the outer plate surface of the vehicle body 10. Note that FIG. 1 shows a state before each roller is engaged with each rail for easy understanding.

The support structure of the slide door S will be described with an example of a center rail 820 and a center roller 830. As shown in a sectional view of FIG. Then, the center rail 820 is housed in the concave groove 14 opening outside the vehicle body 10. The center rail 820 is formed by forming a downwardly-facing U-shaped cross-section downward guide groove 823 in an upper flange of a horizontal U-shaped cross-section 825 that opens to the outside of the vehicle body 10. The vertical rear wall portion 822 of the portion 825 is attached to the bottom portion 141 in the concave groove 14 of the quarter panel 13 by bolting.

The center roller 830 engaged with the center rail 820 is provided with a horizontal rolling surface 821 formed of a horizontal lower flange of a horizontal U-shaped cross section 825 of the center rail 820.
Rolling on the top, sliding door S with horizontal support shaft 834
Roller 8 supported by an arm 835 extending from the main roller 8
A guide roller 8302 is supported by an arm 835 on a vertical support shaft 834 and rolls in contact with the right and left vertical flange portions of the downward guide groove 823. That is, the main roller 8301 supports the weight of the slide door S by the horizontal rolling surface 821 of the lower flange of the center rail 820 and the guide roller 830.
Numeral 2 regulates the position of the sliding door S entering and exiting the vehicle body 10 in the left-right direction.

By the way, in the painting process, the vehicle body 10 having the support structure of the slide door S constituted by the rails and the rollers, which is constructed and adjusted in the sheet metal process, is constructed as described above.
When the D coating, the intermediate coating, and the top coating are performed, in the ED coating process, the vehicle body 10 is entirely immersed in the ED coating tank, so that the coating naturally adheres to the rails. Further, in the middle coating and top coating processes, spray coating with atomized paint is performed, so that the paint naturally adheres to the rails as well. Therefore, the paint also adheres to the upper surface of the horizontal rolling surface 821 of the horizontal U-shaped cross section 825 in FIG.

Further, in a case where electrostatic painting is performed by a robot in the intermediate and top coating processes of the vehicle body 10, there is a portion where paint is difficult to adhere to by painting by the robot with the slide door S closed, so that the slide is performed. The door S is opened, and a portion to which the paint is hard to adhere is painted by a worker's hand. That is, in the paint spraying process before the baking process, the slide door S is opened and closed while the paint attached to the vehicle body 10 is not yet solidified.

Then, since the main roller 8301 rolls on the still soft paint adhered to the upper surface of the horizontal rolling surface 821 of the horizontal U-shaped cross section 825, the painted surface of the horizontal rolling surface 821 becomes uneven. In this state, the paint is peeled off from the horizontal rolling surface 821 and adheres to the main roller 8301 to form irregularities. When the paint is baked and solidified in a paint drying furnace in this state, the surface of the horizontal rolling surface 821 and The surface of the main roller 8301 becomes uneven, and when the sliding door S is opened and closed, the main roller 8301 rolls on the unevenness, so that the main roller 8301 does not rotate smoothly, and vibrates up and down even if it rotates. Therefore, there is a problem that abnormal noise is generated. In particular, when the main roller 8301 is a resin or a roller in which the surface of an outer race of a bearing is coated with a resin, the resin portion of the roller is creeped and deformed by the heat of the coating and drying furnace, and the unevenness is further increased.

[0010]

In order to avoid the problem of opening and closing the slide door before the paint does not dry as described above, a technique described in Japanese Patent Application Laid-Open No. 2000-16086 has been proposed. That is, the sliding door locking device described in this publication locks the upper roller on the upper rail, locks the lower roller on the lower rail, and supports the front side of the sliding door on the vehicle body when painting the vehicle body. Is removed from the center rail, and a hanging hanger movably attached to a hanging hanger guide rail separately provided along the vehicle transport line,
The vehicle body is conveyed while the slide door is suspended while swinging around the upper roller and the lower roller. Therefore, if the sliding door is painted in this state, the sliding door does not roll on the center rail during the painting, so that the above-mentioned problem can be solved.

However, the above-described locking device requires the installation of a new suspension hanger guide rail on the vehicle transport line, which inevitably requires a large-scale device, and furthermore, the main transport rail and the lifting hanger. There is also a problem in the operation of an automobile transport line, such as the need for control to match the transport timing of the guide rails.

Therefore, it is necessary to further improve the horizontal rotation of the U-shaped cross section 825 of the center rail 820 in the assembling process which is a post-process of the painting process as shown in FIGS. A rolling plate 711 is attached on the upper surface of the moving surface 821 as a cover member made of a thin stainless steel plate and having substantially the same length as the center rail 820.
The main roller 8301 is configured to roll over the flat upper surface of the rolling plate 711 so as to prevent abnormal noise due to the unevenness of the upper surface of the center rail 820. Has been proposed. However, in this structure, the rolling plate 711 is required as a cover member made of stainless steel, so that the cost is increased, and the rolling is performed while the paint adheres to the thickness of the rolling plate 711 and the horizontal rolling surface 521. The mounting dimensions of the center rail 820 and the main roller 8301 change by the thickness of the paint adhered on the horizontal rolling surface 821 for mounting the plate 711, and the mounting adjustment work in the sheet metal process becomes useless. There is such a problem.

In order to solve the above-mentioned problem, the present invention does not generate noise due to the center roller even when the slide door, which has been mounted and adjusted in the sheet metal process, is supported on the vehicle body and painted. It is an object of the present invention to provide a method of coating a vehicle body that does not change its dimensions and a device for temporarily attaching a slide door during vehicle body coating.

[0014]

According to the present invention, there is provided a method of painting a vehicle body, in which a sliding door supported by a roller rolling on a rail disposed on the vehicle body is painted on the vehicle body with the sliding door assembled. A method in which the surface of the rail on which the regular rollers used in the completed vehicle roll is masked in advance, and a temporary roller having a shape that does not contact the masking portion when the slide door is opened and closed is provided on the slide door during painting. After assembling and painting, remove the masking,
In addition, the temporary roller is replaced with a regular roller. Therefore, when the vehicle is completed, the masking material on the rails is peeled off and a regular roller is attached to the slide door, so that paint can not be attached to the rails and rollers. There is no unevenness due to paint adhesion, no noise due to the rolling of the rollers, and the related dimensions of the sliding door and the car body, which were adjusted during the pre-painting process, can be maintained. No need to readjust or modify
The body can be manufactured at low cost.

Further, the present invention provides a sliding door temporary attaching apparatus for painting a vehicle body, which has a sliding door supported by rollers rolling on rails attached to the vehicle body. An apparatus, in which a rail on which a regular roller used in a completed vehicle rolls is previously masked, and a regular roller is provided at a mounting portion of the regular roller so as to be replaceable with the regular roller. A temporary roller having a shape that supports the slide door while rolling and does not contact the masking portion when rolling. Therefore, when the slide door is moved during painting, the temporary roller rolls on the part of the rail that deviates from the masking part and does not contact the masking part, minimizing the peeling of paint by the temporary roller. In addition, since the temporary roller can be replaced with a regular roller, a vehicle body having a slide door can be assembled without requiring a large number of steps.

Further, in the method of painting a vehicle body or the sliding door temporary attaching apparatus at the time of painting a vehicle body according to the present invention, the temporary roller has an outer diameter which is the same as that of a regular roller, and the temporary roller has a portion other than the masking portion on the rail. And a rolling part that rolls on the surface of. Therefore, when the sliding door moves during the painting operation, the rolling part provided on the temporary roller rolls on the surface other than the masking part of the rail, so that the paint adhering to the part other than this masking part may be peeled off or uneven. Even if it hardens, since it is not directly related to the rolling of the regular rollers when the vehicle is completed, generation of abnormal noise due to the rolling of the rollers can be prevented.
In addition, since the regular roller and the temporary roller have the same outer diameter, the sliding door can be maintained even if the temporary roller is replaced with the regular roller.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle body coating method and a sliding door temporary attaching apparatus according to the present invention. The vehicle body coating method and the sliding door temporary attaching apparatus at the time of painting the vehicle body according to the present embodiment are applied to a one-box vehicle having a sliding door. Here, FIG. 1 is an overall view of a vehicle equipped with a slide door, and FIG. 2 is a cross-sectional view of a center rail portion supporting the slide door. FIG. 3 is a plan sectional view showing a masking portion of the center rail, and FIG. 4 is a side sectional view of a regular roller and a temporary roller.

(Structure) The structure of the slide door temporary attachment device will be described. As shown in FIG. 1, the sliding door S of the vehicle engages with an upper roller 41 that engages with an upper rail 40 disposed above the opening P of the vehicle body 10 and engages with a lower rail 50 disposed below the opening P. Lower roller 51
And supported by a center roller 30 which engages with a center rail 20 disposed on the quarter panel 13 at an intermediate position in the height direction between the upper rail 40 and the lower rail 50, and slides in the front-rear direction substantially parallel to the outer plate of the vehicle body 10. It is provided to move.

The relationship between the rails and the rollers will be described mainly with respect to an example of the center rail 20 and the center roller 30. As shown in the cross section of FIG. 2, the quarter panel 13 is provided horizontally at the middle in the height direction. A center rail 20 similar to the conventional one is disposed in the groove 14 in the front-rear direction of the vehicle.
As shown in FIG. 1, the center rail 20 is formed by rolling a stainless steel plate that is curved from the rear pillar 12 of the opening P where the sliding door S of the vehicle body 10 is attached and is disposed to the rear of the quarter panel 13. It is attached in a sheet metal process of the vehicle body 10.

The center rail 20 has a downward U-shaped cross-section guide groove 23 formed in the upper flange of the laterally U-shaped cross-section 25 that opens to the outside of the vehicle body 10. The horizontal lower flange of the cross section 25 has a horizontal rolling surface 21 on its surface on which a main roller 301 of a center roller 30 to be described later rolls, and a vertical rear wall of the horizontal U-shaped cross section 25. The quarter panel 13 is
Is attached to the bottom 141 in the concave groove 14 by a plurality of bolts and nuts.

As shown in FIGS. 3 and 5, the paint is prevented from adhering to the horizontal rolling surface 21 of the center rail 20 on which a main roller 301 of the center roller 30 described later rolls. , At the same time as the roll forming of the center rail 20, a masking tape 60 is used as a masking material.
Are adhered along the locus of the main roller 301 of the center roller 30. That is, the center rail 20 of FIG.
The center roller 3
0 of the main roller 301 provided between the two guide rollers 302, 302.
The masking tape 60 is stuck on the rolling trajectory rolling along the straight portion and the curved portion of the center rail 20 by the guidance by 02. The center rail 2
The curved portion at the leading end of 0 is bent into a curved shape after being roll-formed in a straight line, so that the masking tape 60 also has a curved shape following the shape.

On the other hand, as shown in FIG. 2, the center roller 30 is supported by a support shaft 34 horizontally attached to a vertical portion of an arm 35 attached to the slide door S so as to swing freely (not shown). It is composed of a roller 301 and two guide rollers 302, 302 supported by a support shaft 34 attached vertically to a horizontal portion of the arm 35 before and after the main roller 301. Then, a regular roller 31 and a temporary roller 32, which will be described later, are prepared as the main roller 301.

As shown in FIG. 4A, the regular roller 31 has a ball bearing 312 on the inner side, and the outer surface of the outer race 313 is coated with a synthetic resin to form a rolling surface 311. The outer diameter D of the surface 311 is 24
mm and a width W of 8 mm.

As shown in FIG. 4B, the temporary roller 32 has the same width w as the width W of the rolling surface 311 of the regular roller 31 and the outer diameter d is equal to the rolling surface of the regular roller 31. The cylindrical portion 321 having a diameter of 20 mm slightly smaller than the outer diameter D of the cylindrical portion 311 and the outside of the cylindrical portion 321, that is, the temporary roller 32
When the regular roller 31 is attached to the arm 35, it extends over the head of the support shaft 34 at a position deviated from a position corresponding to the rolling surface 311 of the regular roller 31 when the regular roller 31 is attached to the arm 35, and its outer diameter D Is the rolling surface 311 of the regular roller 31
Rolling part 32 formed to the same size as the outer diameter D of 24 mm
2 and a shaft hole 325. The thickness v of the rolling portion 322 is formed as thin as the thickness of the head of the support shaft 34.

On the other hand, as shown in FIGS. 5 and 6, a support shaft 34 for rotatably supporting the main roller 301 is mounted in a mounting hole 355 provided in a vertical portion of the arm 35 mounted on the slide door S. Nut 350 is welded. The nut 350 is provided with a screw hole 353 into which the screw portion 347 of the support shaft 34 is screwed. The nut 350 is a stepped nut having an outer diameter portion including a small diameter portion 351 and a large diameter portion 352. Has serrations. A counterbore hole 354 having a predetermined depth is provided inside the large diameter portion 352 and is continuous with the screw hole 353.
The nut 350 is attached to the vertical portion of the arm 35 by driving the small-diameter portion 351 into the mounting hole 355 of the arm 35 from the indoor side to the outside, and is prevented from rotating by serration. Large diameter part 352
Is fixed by welding at the position where it contacts.

The support shaft 34 has a shaft 345 inserted into the shaft hole 315 of the regular roller 31 and the shaft hole 325 of the temporary roller 32, and a shaft 345 at one end with the shaft 345 interposed therebetween.
A head portion 341 having a larger diameter and a screw portion 347 screwed to a nut 350 attached to the arm 35 at the other end are formed. The outer diameter of the shaft 345 in the present embodiment is:
The support shaft 34 for the regular roller 31 and the support shaft 34 for the temporary roller 32 are different from each other.
The outside diameter of the shaft portion 345 of the fourth embodiment is increased. This is because the support shaft 34 for the temporary roller 32 and the unused support shaft 34, which are exposed to high temperatures in the coating process and to which paint is likely to adhere.
This is in order not to mix with.

Then, the shaft portion 34 of the support shaft 34 is inserted into the shaft hole 325 of the temporary roller 32 or the shaft hole 315 of the regular roller 31.
5, the screw portion 347 of the support shaft 34 is screwed into a nut 350 attached to the arm 35 and tightened to attach the temporary roller 32 or the regular roller 31 to the slide door S. In addition, the temporary roller 32 is attached in a sheet metal process,
The regular roller 31 is replaced with the temporary roller 32 in the assembling process after the painting process and is mounted.

(Operation) Next, a method of coating a vehicle body using the slide door temporary attaching device at the time of painting the vehicle body will be described. First, in the sheet metal process of the vehicle body 10, the upper rail 40 is provided in the upper part, the lower rail 50 is provided in the lower part, and the concave groove 14
The center rail 20. The upper roller 40 is engaged with the upper roller 41 in a state of being attached to the slide door S, the lower rail 50 is engaged with the lower roller 51, and the center rail 20 is also engaged with the center roller 30. 10 is slidably mounted. However, as the main roller 301 of the center roller 30, a temporary roller 32 is attached to the arm 35 in the sheet metal process.

In the state where the rollers 41, 51, 30 are engaged with the rails 40, 50, 20, the vehicle 1
The mounting adjustment of the sliding door S with respect to 0 is performed. That is, the mounting adjustment is performed when the sliding door S is closed.
The outer plate surface around the opening P of the vehicle body 10 and the outer plate surface of the slide door S are flush with each other so that the position between the opening P of the slide door S and the outer periphery of the slide door S is a predetermined gap. like,
In addition, the adjustment is performed by finely adjusting the mounting positions of the rollers 41, 51, and 30 and the lock device of the slide door S (not shown) so that the slide door S slides smoothly.

Due to the mounting adjustment in this sheet metal process, the provisional roller 32 of the center roller 30 has the same relational dimension as the regular roller 31, that is, a roller having the same outer diameter D as the outer diameter D of the regular roller 31. It is attached in a state where the mounting is adjusted by the moving part 322, and the rolling part 322 of the temporary roller 32 rolls on the horizontal rolling surface 21 of the center rail 20. The rolling portion 322 of the temporary roller 32 is outside the width w of the cylindrical portion 321, that is, the rolling surface of the regular roller 31 when the regular roller 31 is attached to the arm 35 when the temporary roller 32 is attached to the arm 35. As shown in FIG. 5, since the projection extends beyond the position corresponding to the position 311, as shown in FIG. To roll.

The vehicle body 10 that has completed the sheet metal process is transported to a painting process via a surface treatment process. In the painting process, just like the conventional painting, the ED painting process and its baking process,
The coating is completed through the intermediate coating step and the baking step, and the top coating step and the baking step. In each of the above-mentioned coating processes, the paint adheres to the center rail 20. In particular, paying attention to the horizontal rolling surface 21, as shown in FIGS. 5 and 6, the paint is applied not only on the general surface but also on the masking tape 60. Adhesion causes painting.

In this coating step, as described above, the temporary roller 32 is attached as the main roller 301 of the center roller 30. Therefore, as is apparent from FIG. The masking tape 60 on the horizontal rolling surface 21 of the center rail 20 by the part 322
Roll on the part where the
No contact on 0. Therefore, in the painting process, even if the slide door S is rolled for the convenience of the painting work, the rolling portion 3 of the temporary roller 32 attached to the slide door S
Since only the horizontal rolling surface 21 of the center rail 20 is rolled at 22, the amount of paint that has adhered to the horizontal rolling surface 21 is reduced, and the amount of the paint falling from the horizontal rolling surface 21 is also small.

The vehicle body 10 which has been completely painted in the painting process
In the assembling process, various parts are attached to the completed vehicle. In the process, the masking tape 60 attached to the horizontal rolling surface 21 of the center rail 20 is peeled off and attached to the center roller 30. The temporary roller 32 is replaced with the regular roller 31. Then, FIG.
As shown in (2), no paint adheres to the horizontal rolling surface 21 of the center rail 20 where the masking tape 60 has been peeled off and paint has not adhered, since it was on standby in the assembly process without going through the painting process. The rolling surface 311 of the regular roller 31 having the same outer diameter as the outer diameter D of the rolling portion 322 of the temporary roller 32 of the regular roller 31 comes into contact with the regular roller 31 to readjust the slide door S on the vehicle body 10. Without doing
The rolling surface 311 of the regular roller 31 rolls on this surface.

As described above, the masking tape 60 is attached to the horizontal rolling surface 21 of the center rail 20 that supports the sliding door S on the vehicle body 10 along the locus of the rolling of the main roller 301 of the center roller 30 and the main The roller 301 has a cylindrical portion 321 having a diameter smaller than the outer diameter of the regular roller 31, and is provided outside the cylindrical portion 321, that is, when the temporary roller 32 is attached to the arm 35 and the regular roller 31 is attached to the arm 35. Regular roller 31
At a position deviated from a position corresponding to the rolling surface 311 of the above, the provisional roller 32 having the same diameter as the regular roller 31 and forming the narrow rolling portion 322 is attached, the mounting adjustment is performed in the sheet metal process, and the coating process is performed. After that, in the assembling process, the masking tape 60 is attached to the horizontal rolling surface 21 of the center rail 20.
And the temporary roller 32 as the main roller 301 of the center roller 30 is replaced with the regular roller 31. Therefore, even if the slide door S is opened and closed when the vehicle body 10 is painted, the center roller 20 remains on the horizontal rolling surface 21. The paint adhered to the temporary roller 32 only adheres to the rolling portion 322 of the temporary roller 32, and the regular roller 31 replaced in the subsequent assembling process contacts the horizontal rolling surface 21 of the center rail 20 to which the paint is not adhered. The sliding door S is mounted on the vehicle body 10 in the same manner as that adjusted in the sheet metal process where paint is not attached, and there is no need to readjust in the assembly process. Can be achieved.
The regular roller 31 and the rolling surface 3 of the regular roller 31
The paint does not adhere on the horizontal rolling surface 21 of the center rail 20 with which the center roller 11 comes into contact, the rolling of the regular roller 31 becomes smooth, and the generation of abnormal noise can be prevented.

It should be noted that the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention. For example, in the above embodiment,
The masking tape was attached to the surface on which the main roller on the center rail rolls, and a temporary roller was attached to the main roller of the center roller to paint the vehicle.However, the relationship between the masking tape and the temporary roller was as follows. The present invention is not limited to this, and can be applied to the relationship between the center rail and the guide roller, between the upper rail and the upper roller, or between the lower rail and the lower roller. The narrow rolling portion provided on the temporary roller is shown as an example in which the temporary roller is mounted on the center rail, and is provided on the side near the rear wall of the horizontal U-shaped cross section of the center rail. However, it may be provided on the opening side of the horizontal U-shaped cross section. When provided on the side close to the rear wall portion, it is possible to suppress the fall of the adhered paint from the center rail due to the movement of the slide door in the painting process.

[0036]

According to the present invention, there is provided a method of painting a vehicle body in which a sliding door supported by rollers rolling on rails disposed on the vehicle body is applied to the vehicle body in a state where the sliding door is assembled to the vehicle body. In addition to masking the surface of the rail on which the regular rollers used in the vehicle roll,
At the time of painting, the slide door is assembled with a temporary roller having a shape that does not contact the masking part when the slide door is opened and closed,
After painting, the method of painting the vehicle body, characterized in that the temporary roller is replaced with a regular roller, and a rail on which a surface on which the regular roller used for the completed vehicle rolls is previously masked, and a mounting portion for the regular roller. A slide for painting a vehicle body comprising a temporary roller having a shape that is replaceable with the regular roller, supports the slide door while rolling on the rail when the slide door is opened and closed, and does not contact the masking portion when rolling. Even if paint adheres to the rolling surface of the rollers and rails that support the slide door when painting the car body, the masking of the rail surface is peeled off after painting and the rollers are replaced with regular rollers because the door temporary attachment device was used.
The slide door can be supported on the vehicle body without paint on the rails and rollers, preventing the generation of abnormal noise when opening and closing the slide door, and sliding on the vehicle body without changing the mounting dimensions of the slide door. Since the door can be supported, it is not necessary to readjust the building, and the number of assembly steps for the vehicle body can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall view of a vehicle equipped with a slide door according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of a center rail supporting a sliding door according to one embodiment of the present invention.

FIG. 3 is a plan sectional view showing a masking zone of a center rail according to one embodiment of the present invention.

FIG. 4 is a side sectional view of a regular roller and a temporary roller according to one embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a temporary roller according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a state in which a regular roller according to one embodiment of the present invention is attached.

FIG. 7 is a sectional view of a conventional center rail portion.

FIG. 8 is a perspective view of a conventional center rail portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Body 20 Center rail 21 Horizontal rolling surface 30 Center roller 31 Regular roller 32 Temporary roller 40 Upper rail 50 Lower rail 60 Masking tape S Sliding door

Continuation of the front page (72) Inventor Kenji Shimizu 2 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Shiroki Industry Co., Ltd. (72) Inventor Ryoichi Inoue 2 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Shiroki Industry Co., Ltd. F term (reference) 4D075 AD06 CA14 DA23 DA31 DB02 DC12 EA01 EA35

Claims (3)

[Claims] 1. A method of painting a vehicle body in which a sliding door supported by rollers rolling on rails disposed on the vehicle body is assembled on the vehicle body, wherein a regular roller used in a completed vehicle rolls. In addition to masking the surface of the rail to be painted in advance, at the time of painting, a temporary roller having a shape that does not contact the masking part when opening and closing the slide door is assembled to the slide door, and after painting, the temporary roller is replaced with a regular roller. How to paint the car body. 2. A device for temporarily attaching a slide door for painting a vehicle body having a slide door supported by rollers rolling on rails attached to the vehicle body, wherein a regular roller used in a completed vehicle is rolled. A rail having a moving surface masked in advance, and a regular roller is provided at a mounting portion of the regular roller so as to be replaceable with the regular roller, and supports the slide door while rolling on the rail when the slide door is opened and closed, and A sliding door temporary attaching device for painting a vehicle body, comprising a temporary roller having a shape that does not contact the masking part. 3. The method for painting a vehicle body according to claim 1, or the apparatus for temporarily attaching a slide door for painting a vehicle body according to claim 2, wherein the temporary roller has the same outer diameter as a regular roller, A coating method for a vehicle body or a slide door temporary attaching device at the time of coating a vehicle body, comprising a rolling portion that rolls on a surface other than the masking portion on the rail.