JPS623931A - Manufacture of vehicular wheel cover - Google Patents

Abstract

PURPOSE:To realize a wheel cover fully satisfactory in ornamentality by a method wherein a cover main body, an ornament and a fixing ring are assembled together with one another and, after that, liquid sealer is delivered onto and adhered to the rear surface of the ornament, while the whole assembly of the cover main body, the ornament and the fixing ring being kept on rotating. CONSTITUTION:Firstly, after a cover main body 10 made of transparent synthetic resin is shaped in a disc form, a coating film is formed by colored coating on the inner surface side of the cover main body excluding the inner surface of an annular retaining rib 13, which is integrally formed with the cover main body on the inner surface side nearly at the center of the cover main body. SEcondly, a circular plate-shaped ornament 15 is arranged in the interior of the retaining rib 13. Finally, a fixing ring 19 is seated on the peripheral edge of the retaining rib. Liquid sealer 20 is adhered to the rear surface of the ornament 15, while the whole assembly of the cover main body 10, the ornament 15 and the fixing ring 19 being kept on rotating horizontally so as to transfer the sealer between the fixing ring 19 and the ornament by means of centrifugal force due to the rotation of said whole assembly and further to forcibly adhere to the peripheral surface of the retaining rib 13 in order to fix the fixing ring, the ornament and the cover main body into an integral body. Accordingly, because the separate ornament can be seen through the thickness of the cover main body 10 made of transparent synthetic resin, the depth in color tone is increased and consequently a wheel cover excellent in ornamentality is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a wheel cover for a vehicle, which includes an ornament displaying the type of automobile, etc. in the center of the cover body.

2. Description of the Related Art Conventionally, in manufacturing this type of wheel cover, a circular concave receiving groove is formed on the outer surface of the cover body and a circular concave receiving groove is formed on the outer surface of the cover body so that the ornament 2 can be placed approximately in the center of the cover body 1 as shown in FIG. Ornaments are fixed with double-sided adhesive tape, and if the cover body is made of transparent synthetic resin, the ornament is drawn on the center of the inner surface with a hot stamp and covered with a colored coating. It is usually configured as .

Problems to be Solved by the Invention However, these wheel covers are not yet fully satisfactory decoratively because the ornaments lack depth in color.

In order to make the color of this ornament appear deeper, the cover body is made of transparent synthetic resin and a separately molded ornament is attached to the inner surface, but when attaching it, apply sealant to the edge of the ornament individually. However, it takes a lot of time and effort to manufacture the product in an airtight manner that prevents dirt, water, etc. from entering.

Means for Solving the Problems In the method of manufacturing a wheel cover for a vehicle according to the present invention, the cover body is formed into a disk shape from a transparent synthetic resin, and an annular stopper rib is provided approximately at the center of the inner surface. A disk-shaped ornament is placed inside the stopper rib, a fixing ring is placed on the periphery of the ornament, and a liquid sealant is applied to the back side of the ornament while rotating the whole thing horizontally. The sealing agent is transferred between the fixing ring and the fixing ring by the centrifugal force accompanying the rotation, and is forcibly attached to the circumferential surface of the stopper rib, so that it is fixed integrally.

Function: In this method of manufacturing wheel covers for vehicles, after the cover body, ornament, and fixing ring are combined, the entire body is rotated and liquid sealant is discharged onto the back of the ornament. Since the sealant can be applied to the circumferential surface of the stopper rib through the underside of the fixing ring, there is no need to trace the sealant around the circumference of the ornament to apply it.Also, the sealant is pressed against the stopper rib using centrifugal force and hardens, so the sealant adheres tightly. This allows the ornament to be securely fixed in an airtight manner, and also allows other ornaments to be seen through the thickness of the cover body, which is made of transparent synthetic resin, thereby increasing the depth of the color tone. It will be possible to manufacture decorative items.

An example will be described below with reference to FIGS. 1 to 7.

In this vehicle wheel cover, first, a cover body 10 is formed into a disk shape from a transparent synthetic resin such as polycarbonate resin or methyl methacrylic resin. A plurality of annular ribs 11, 12, and 13 are protrudingly molded on the inner surface, and among these ribs, the ribs 11 and l'2 located closer to the outer periphery reinforce the cover body lo and also serve as the cover body 1 to the tire wheel.
It is formed to be equipped with a retainer 14 to which o is attached.

Further, the annular rib 13 located on the inner side is formed as a stopper rib for reinforcing the cover body 10 and for receiving and fixing an ornament 15, which will be described later, inside.

Furthermore, a ring-shaped catch 16 is formed to protrude with a relatively small rise on the inside of the stopper rib 13, and by supporting the ornament 15 with this catch 16, the cover main body 10
It is possible to attach the ornament 15 by providing a space between it and the inner surface of the ornament 15 so as to further deepen the color tone of the ornament 15. After the cover body 10 is formed, pre-treatments such as annealing and degreasing are performed, and as shown in FIGS. The colored paint is applied by spray S to form a coating layer 17. At this time, the inner side of the seat 16 is covered with a mask M so that it can be seen through from the outer surface side, and is formed transparent without forming a coating layer. The ornament 15 to be attached inside the aluminum plate may be, for example, an aluminum plate with a predetermined pattern, symbol, etc. printed on one side, or a pattern, symbol, etc., stamped and molded and colored. In addition, this ornament 15 is formed of a relatively small material so that there is some distance between the side surface of the rib 13 and the periphery of the ornament main body, and the Protrusions 18, 18, .

When installing it, stop the ornament 15 and the rib 1.
After placing it inside the rib 1, further fix the fixing ring 19.
The ornament 15 is placed on top of the cover body 10, and if necessary, the ornament 15 is suppressed or sucked and supported on the cover body 10 by a rotatable suppressing part or a vacuum arm (not shown), and the whole is rotated horizontally, as shown in FIG. A liquid sealant 20 is discharged and adhered to the periphery of the back surface of the ornament 15 using a nozzle N.

Alternatively, the fixing ring 19 can be an annular ring with a step between the part placed on the stopper rib 13 and the part placed on the periphery of the ornament 15, as shown in FIG. It is preferable to provide protrusions 19a, 19a, . . . on the portion where the ornament 15 is placed to create a gap. Further, as shown in FIG. 6, the fixing ring 19 can be molded from a transparent synthetic resin in the same mold at the same time as the cover body 10 is molded. Also,
As the sealant 20, a thermosetting type, a cooling type, or an ultraviolet curing type can be used, and if the sealant 20 is of the same color as the coating layer 17 formed on the inner surface of the cover body 10, it can be used on the surface side of the ornament 15. Even if the sealant 20 protrudes to some extent, it can be made unnoticeable. As the whole rotates, the sealant 20 passes through the gap between the fixing ring 19 and the back surface of the ornament 15 due to centrifugal force, moves to the inner surface of the stopper rib 13, and adheres to the ornament 15, the stopper rib 13, and the fixing ring. It begins to harden over a period of 19 seconds. Furthermore, since there is a slight distance between the side surface of the stopper rib 13 and the periphery of the ornament 15 as shown in FIG. It can be filled and fixed. At a position circumferentially away from the discharge position of the sealant 20, as shown in FIG. 4, hardening accelerating means such as a pipe that blows out hot air or cold air and an irradiation lamp E that irradiates ultraviolet rays are arranged. , the operation can be started when the sealant 20 reaches a predetermined discharge amount. Among these, when irradiating ultraviolet rays, since the portion of the cover main body 10 where the ornament is attached and the fixing ring 19 are transparent, the ultraviolet rays can be irradiated and transmitted from the back side to accelerate curing. Furthermore, if ultraviolet rays are irradiated from the outer surface of the cover body 10 by the irradiation lamp E, even if the ultraviolet curable sealant tries to protrude onto the outer surface of the ornament 15, it is immediately cured and future protrusion is prevented. Furthermore, before placing the ornament 15, a stopper rib 13 is installed.
A liquid sealant is filled in advance in the groove between the and the receiving seat 16, and when the liquid sealant is still maintained, the ornament is placed and rotated, and the sealant 20 is discharged from the nozzle N onto the back surface of the ornament. It can also be made to stick. As the fixing ring 19, a ring whose lower surface is slightly raised inward to form a gap with the ornament 15 as shown in FIG. 7 can also be used. The rotation speed of the ornament 15 may be adjusted according to the viscosity when discharging the sealant 20.

When manufacturing a vehicle wheel cover in this way, the sealant 20 is discharged from one place on the edge of the ornament 15, and the sealant 20 is applied to the ornament 15 and the fixing ring 1.
Cover book with 9 placed on it.

Since the sealant 20 can be transferred and adhered to the stopper rib 13 and the fixing ring 19 by rotating the entire body 10, it is not necessary to apply the sealant 20 along the circumference of the ornament 15. In addition, the sealant 20 sticks to the inner surface of the stopper rib 13 due to the centrifugal force caused by the rotation of the whole body, and also prevents overflow by the fixing ring 19, and also fills into the groove on the inner surface of the cover body 10 and hardens. , ornament) 15, and uniformly adheres and hardens without creating a gap.

Effects of the Invention As described above, according to the method for manufacturing a vehicle wheel cover according to the present invention, another ornament can be securely and easily attached to the inner surface of the cover body using a sealant by pressing it with a fixing ring. With this, the ornaments have a deep color tone, which makes it possible to form them into highly decorative ornaments.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the manufacturing process of a vehicle wheel cover according to the present invention; Fig. 2 is a partially enlarged sectional view showing the cover body in the middle of the same process; Fig. 3 is an illustration of an ornament used in the same process. FIG. 4 is an explanatory view showing the process of applying a sealant during the same process, FIG. 5 is a perspective view of a fixing ring used in the method according to the present invention, and FIG. 6 is a step of forming the fixing ring. FIG. 7 is an explanatory diagram of the process of applying a sealant using another fixing ring, and FIG. 8 is a front view of a vehicle wheel cover manufactured by a conventional method. 10: Cover body, 13: Stopping rib, 15: Ornament, 17: Colored rattan 4, 19: Fixing ring, 20 Niji ring agent. □1r+'h Figure 5tK7! I6 Figure 8

Claims (3)

[Claims] (1) The cover body is formed into a disk shape from a transparent synthetic resin, and an annular stopper rib is integrally molded approximately at the center of the inner surface, and a disk-shaped ornament is arranged inside the stopper rib and the circumference of the cover body is formed into a disk shape. A fixing ring is placed on top of the ornament, and as the whole is rotated horizontally, a liquid sealant is applied to the back of the ornament. A method for producing a wheel cover for a vehicle, characterized in that the wheel cover is forcibly attached to the circumferential surface and fixed integrally. (2) A wheel cover for a vehicle according to claim 1, wherein after forming the cover body, a coating film is formed with a colored paint on the inner surface of the cover body except for the inner surface of the stopper rib. manufacturing method. (3) The method for manufacturing a wheel cover for a vehicle according to claim 1, wherein the fixing ring is formed in the same mold when the cover body is molded.