JPH07156651A - Manufacture of sun visor for vehicle - Google Patents

Abstract

PURPOSE:To easily manufacture a vehicle use sun visor with beautiful appearance while reducing cost by decreasing manufacturing man-hour as small as possible. CONSTITUTION:Between a pair of molding forms 1, 2 respectively provided with irregular pattern surfaces 3, 4 for forming a crimp pattern surface in a molded surface, two sheets of cushion pads 12 consisting of foaming synthetic resin excellent in thermal welding like polyolefin foam are set by interposing a skeleton frame 13 therebetween. Thereafter by closing a pair of the molding forms 1, 2 to heat both the cushion pads 12 compressed, opposed surfaces of both the cushion pads 12 are welded to be integrally formed, simultaneously with forming a crimp pattern surface in outer surfaces of these cushion pads 12. After that by forcing a pair of the molding dies 1, 2 cooled, the crimp pattern surface of the cushion pads 12 is hardened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a vehicle sun visor.

[0002]

2. Description of the Related Art Conventionally, in a vehicle sun visor, two cushion pads made of polyurethane foam are impregnated with a thermosetting adhesive, and the cushion pads are sandwiched between a pair of molding dies. After being set by, by heating and compressing, to form a pad body formed by integrating the two cushion pads, by covering the pad body with an outer skin made of synthetic resin sheet or woven cloth, It has been common to manufacture sun visors for vehicles.

[0003]

By the way, in the above-described conventional method for manufacturing a vehicle sun visor, two cushion pads sandwiching a bone frame are formed by heating and compression to form an integrated pad body. Therefore, this pad body must be covered with an exterior skin, which increases the number of manufacturing steps,
Not only is the cost high, but wrinkles and sagging are likely to occur on the outer skin, and these wrinkles and sagging deteriorate the appearance.

In view of the above-mentioned conventional problems, an object of the present invention is to reduce the cost by reducing the number of manufacturing steps as much as possible and to easily manufacture a sun visor for a vehicle having a beautiful appearance. A method of manufacturing a sun visor is provided.

[0005]

In order to achieve the above object, the present invention provides a polyolefin foil between a pair of molding dies each provided with an uneven pattern for forming a grain surface on the molding surface. After setting two cushion pads made of foamed synthetic resin with excellent heat-welding properties such as a rubber frame with a bone frame sandwiched between them, the pair of molding dies are closed and the cushion pads are heated and compressed. Thus, the opposing surfaces of the both cushion pads are welded and integrated, and at the same time, a grain-patterned surface is formed on the exterior surfaces of these cushion pads, and then the pair of molds are forcibly cooled, whereby the cushion pads are formed. Harden the grain surface.

[0006]

In the method of manufacturing a vehicle sun visor having the above-described structure, two cushion pads are heated, compressed and pressure-bonded with a bone frame sandwiched between them, and the opposing surfaces thereof are welded together with the exterior surface of the cushion pad. By forming the grain pattern surface, it is possible to give the grain pattern surface a decorative property as an outer skin. In addition, after the pair of molding dies are forcibly cooled to cure the grain surface, the mold is opened and the sun visor is taken out, thereby preventing a problem that the grain surface is deformed or damaged.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the mold surfaces of a pair of upper and lower molds 1 and 2 for molding a sun visor are provided with concave and convex pattern surfaces 3 and 4 for forming a grain pattern surface.
Further, a heating heater 5 and a cooling passage 6 to which a cooling liquid for forced cooling is supplied are arranged in the pair of molding dies 1 and 2, respectively. When the pair of molding dies 1 and 2 are opened, two cushion pads 11 are set between the molding dies 1 and 2 with a bone frame 13 interposed therebetween.

The cushion pad 12 is a rectangular flat plate made of thermoplastic foam synthetic resin having excellent heat-welding property such as polyolefin foam. Further, as shown in FIG. 4, the bone frame 13 is formed by bending a metal wire rod in an annular shape, and a bearing member 14 into which a support shaft 15 is rotatably fitted is fixed to a required position thereof. It

As described above, after the two cushion pads 12 are set between the pair of molds 1 and 2 with the bone frame 13 sandwiched therebetween, as shown in FIG. 1 and 2 are closed. At this time, each of the molds 1 and 2 is heated by the heater 5 at a temperature at which the cushion pad 12 can be heated and welded (a temperature of about 140 ° C.). And
Both cushion pads 12 are heated and compressed based on the mold closing operation of the pair of molding dies 1 and 2. As a result, the opposing surfaces of both cushion pads 12 are welded, and these cushion pads 12 are integrated with the bone frame 13 interposed therebetween, and at the same time,
A grain pattern surface corresponding to the concave and convex pattern surfaces 3 and 4 of the pair of molding dies 1 and 2 is formed on the outer surface of the cushion pad 12.

Here, the supply of the electric current to the heater 5 of each of the molding dies 1 and 2 is stopped, while the cooling liquid is supplied to the cooling path 6, so that each of the molding dies 1 and 2 has a temperature of 30.degree. Force cooling until the temperature reaches 50 ° C. As a result, the textured surface of the cushion pad 12 is hardened and the vehicle sun visor is
11 are manufactured. When the textured surface of the cushion pad 12 is cured, the pair of molding dies 1 and 2 are opened, and the sun visor 11 is taken out from the molding dies 1 and 2.

Finally, as shown in FIG. 3, the outer surface of the sun visor 11, that is, the grain-patterned surface of the cushion pad 12, is primed and coated with a coating spray 21 in a desired hue and color. This completes the manufacturing process of the sun visor 11. Also, cushion pad 12
By using a polyolefin foam colored with a desired hue and color, the coating step can be omitted.

[0012]

As described above, according to the present invention,
The facing surface of the cushion pad can be welded based on the heating and compression of the cushion pad by the pair of molding dies, and at the same time, the grain surface with rich decorativeness can be formed on the outer surface of the cushion pad. It is possible to reduce the cost and reduce the cost. Furthermore, by forcibly cooling a pair of molding dies to harden the grain surface, the mold is opened and the sun visor is removed to prevent deformation and damage of the grain surface. Is obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a cushion pad is set with a bone frame interposed between a pair of molding dies according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a state in which a pair of molding dies are closed and the cushion pad is heated and compressed.

FIG. 3 is an explanatory view showing a coating process of the same.

FIG. 4 is a front view of the vehicle sun visor, partially broken away.

[Explanation of symbols]

 1, 2 Mold 3, 4 Uneven surface 5 Heating heater 6 Cooling path 11 Vehicle sun visor 12 Cushion pad 13 Bone frame

Claims (1)

[Claims] 1. A foam synthetic resin, such as a polyolefin foam, which has excellent heat-welding properties, and is provided between a pair of molding dies each provided with an uneven pattern for forming a grained surface on the molding surface. After the cushion pads are set with the bone frame sandwiched therebetween, the pair of molding dies are closed and the both cushion pads are heated and compressed, whereby the opposing surfaces of the both cushion pads are welded and integrated. At the same time, forming a grain pattern surface on the exterior surface of these cushion pads, and then forcibly cooling the pair of molds to cure the grain pattern surface of the cushion pad of the vehicle sun visor. Production method.