JP4916531B2 - Automobile bumper painting jig - Google Patents

Description

The present invention relates to a coating jig for an automobile bumper that can obtain an automobile bumper that is lightweight and has excellent dimensional accuracy even when a paint is baked at a high temperature.

Conventionally, automotive bumper painting jigs that have been put to practical use have FRP bumper receiving parts that are shaped so as to be in surface contact with the entire back surface of the automobile bumper, and are fixed to the reinforcing pipe for shape retention. In addition, it is detachably installed and fixed on the jig receiving part of the painting line. An automobile bumper is placed on the bumper receiving part, and paint is sprayed onto the automobile bumper with a spray gun. It was applied and then transferred to an oven, the interior of the oven was brought to a high temperature of about 150 ° C., and the paint was baked on an automobile bumper.

And when the patent document regarding the jig | tool for coating of an automobile bumper was searched retrospectively, the following patent document is known.

JP 2007-136317 A

The automobile bumper coating jig provided for practical use has a shape in which the FRP bumper receiving portion is in surface contact with the entire back surface of the automobile bumper, that is, the entire surface is formed of thick FRP. Since the overall weight is about 8kg, it is necessary to replace and set a new bumper receiving part in the jig receiving part of the painting line according to the bumper of different shape and size depending on the car model. There was a problem that the replacement work would be a heavy labor.

In addition, the automobile bumper painting jig provided for practical use, after spraying the paint on the automobile bumper, transferred to an oven and baked at about 150 ° C., the polypropylene bumper and the FRP bumper receiver The bumper shrinks when the bumper taken out of the oven and the bumper receiving part are cooled, and then the bumper shrinks according to the shape of the bumper receiving part. As a result, the dimensional accuracy of the bumper does not appear. There was a problem.

In addition, the one described in Patent Document 1 is such that the bumper is supported by a bumper support rod and coating is performed, and there is no bumper receiving portion, so that there is a problem that the dimensional accuracy of the bumper is not obtained. It was.

In order to solve the above-mentioned problem, the present invention forms a shape retaining frame by joining and fixing in a frame shape with a metal material along the outer peripheral edge of the rear surface side of the automobile bumper, and the longitudinal direction of the shape retaining frame facing a reinforcing rod in the shape-retaining frame rod and joined and fixed at predetermined intervals, the shape-retaining frame rod and provided with a plurality of space portions partitioned by the reinforcing rod to form a supporting frame body, further, the support frame The above problem was solved by adopting a means for integrally connecting and fixing a bumper receiving plate made of FRP formed in such a shape as to leave a space portion on the support frame to be a bumper receiving portion. .

The jig for painting an automobile bumper according to the present invention maintains a substantially accurate dimension with a small degree of shrinkage of the bumper receiving part because the bumper receiving part has a space and a small mass in the cooling process after baking is completed. The automobile bumper also contracts along the shape of the upper surface of the bumper receiving portion, so that an automobile bumper with excellent dimensional accuracy can be obtained. In addition, since the weight is considerably lighter than that of a conventional painting jig, when an operator replaces it with another painting jig, the burden on the work is light and the replacement work can be simplified. Further, since the bumper receiving plate in the present invention has a space portion and the mass is reduced, the curved portions on both sides of the bumper receiving plate are not further bent inward in the cooling process, and as a result, A baked automobile bumper having excellent dimensional accuracy can be obtained in which both sides of the automobile bumper are not further bent inward.

It is a bottom view of the jig for painting of the present invention automobile bumper. It is a perspective view which shows the state which set the jig | tool for painting of the motor vehicle bumper of this invention to the painting line. It is a front view which shows the state which mounts an automobile bumper on the jig for painting of the present invention automobile bumper, and is going to set to a painting line. It is a perspective view which shows the state which mounted the automobile bumper in the jig | tool for painting of the present invention automobile bumper, and was set to the painting line.

Embodiments of the present invention will be described in detail with reference to the drawings. The automobile bumper painting jig of the present invention was invented for the purpose of improving the dimensional accuracy of a bumper and facilitating replacement work. The automobile bumper painting jig forms the shape retaining frame 2 by joining and fixing in a frame shape with a metal material such as iron, aluminum, or stainless steel, for example, along the outer periphery of the back surface side of the automobile bumper 1. a plurality of space portions partitioned by the longitudinal shape retention frame rod 2a · the coercive formwork reinforcing rod 3 by joining fixed at predetermined intervals 2a rod 2a · 2b and the reinforcing rod 3 facing the coercive mold 2 4 is provided to form the support frame 5.

Then, a bumper receiving plate 6 made of FRP that is in contact with the rear surface side of the automobile bumper 1 and that leaves the space 4 of the support frame 5 is integrally connected to the support frame 5. A bumper receiving portion 7 is formed by being fixed.

Further, a plurality of holding rods 8 for holding the support frame 5 from below are provided on the lower surface of the support frame 5 constituting the bumper receiving portion 7 so as to be connected and fixed to the support frame 5. Further, on the lower surface of the substrate 9, a fixing rod 12 for detachably setting the jig receiving portion 11 of the painting line 10 is attached to the lower end.

The operation of the coating jig for the automobile bumper of the present invention having the above-described configuration will be described. On the bumper receiving plate 6 of the bumper receiving part 7 set on the jig receiving part 11 of the painting line 10, the automobile bumper 1 conveyed from a bumper manufacturing factory or the like is covered and placed.

Since the shape of the bumper receiving plate 6 is previously formed according to the shape of the automobile bumper 1, the back surface of the automobile bumper 1 is placed in close contact with the bumper receiving plate 6.

The automobile bumper 1 is placed on the bumper receiving plate 6, sprayed with paint and sprayed onto the automobile bumper 1 using a gun or the like, and then the automobile bumper 1 coated with the paint is applied. While being placed on the bumper receiving plate 6, the jig receiving portion frame 11 of the coating line 10 is transferred into an oven (not shown) and exposed to a high temperature atmosphere of about 150 ° C., and the paint is applied to the automobile. Bake on bumper 1.

When the automobile bumper 1 and the bumper receiving plate 6 are exposed to a high temperature atmosphere of about 150 ° C. in the paint baking process, the polypropylene automobile bumper 1 is softened and expanded, but the FRP bumper receiving plate 6 is a space. Since the portion 4 is provided, the mass is small and the degree of expansion is extremely small as compared with a conventional product without a space portion.

Then, when the baking of the paint is completed and the automobile bumper 1 is placed on the bumper receiving plate 6 and is cooled by taking out from the oven, the bumper receiving plate 6 includes the space portion 4 as described above. Since the mass is small, the degree of shrinkage is less than that of a conventional product without a space portion. As a result, the automobile bumper 1 has a small degree of shrinkage and has an upper surface shape of the bumper receiving plate 6 that maintains a substantially accurate dimension. Therefore, the automobile bumper 1 is excellent in dimensional accuracy.

In addition, since the coating jig for the automobile bumper of the present invention is formed by providing the bumper receiving plate 6 with the space portion 4, the weight of the coating jig is approximately 4 as compared with the conventional coating jig without the space portion. Because it is about one-half and lightweight, when the worker changes to another paint jig corresponding to the type of the automobile bumper 1, the work load is light and the replacement work can be simplified. .

Further, since the bumper receiving plate 6 is made of FRP and contains glass fiber, there is no fiber shrinkage, and there is no problem due to internal stress acting on the plane portion during cooling after the heating, but the curved portions on both sides are not There is a risk of further curving inside. However, since the bumper receiving plate 6 according to the present invention has the space portion 4 and has a reduced mass, the curved portions on both sides thereof are not further curved inwardly, and as a result, both side portions of the automobile bumper 1 are also directed inwardly. Therefore, the baked automobile bumper 1 having excellent dimensional accuracy can be obtained.

DESCRIPTION OF SYMBOLS 1 Automobile bumper 2 Mold holding frame 2a * 2b Mold holding frame 3 Reinforcement basket 4 Space part 5 Support frame body 6 Bumper receiving plate 7 Bumper receiving part 8 Holding hook 9 Substrate 10 Painting line 11 Jig receiving part 12 Fixing saddle

Claims (1)

As along the rear surface side outer periphery of automobile bumpers, a metal material and joined and fixed to the frame-shaped so as to form a shape-retaining frame, at predetermined intervals a reinforcing rod in the longitudinal direction of the shape retaining frame rod facing the-holding formwork bonded fixed, the shape-retaining frame rod and provided with a plurality of space portions partitioned by the reinforcing rod to form a supporting frame body, which is further shaped to space portions of the support frame remains An automobile bumper painting jig, wherein a bumper receiving plate made of FRP is integrally connected and fixed on the support frame to form a bumper receiving portion.

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