JPS6111810B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a sun visor for a vehicle, and its purpose is to provide a sun visor for a vehicle that can streamline the manufacturing process of the sun visor and improve the physical properties and appearance of the sun visor surface. An object of the present invention is to provide a method for manufacturing.

An embodiment of the present invention will be described below with reference to the drawings.

First, the apparatus used in this example will be explained according to FIG.
A lower mold is fixedly installed on the upper part, and a molding convex part 1a is formed around the lower mold, and the convex part 1a
A molding recess 1b for molding one half of the sun visor is formed on the inside of the sun visor, and a rough surface R1 is formed in an uneven pattern on the surfaces of the molding projection 1a and molding recess 1b, which serve as pressurizing surfaces. ing.

Reference numeral 3 denotes a movable base which is disposed above the table T so as to be movable up and down, and a cutting blade 4 having a blade line corresponding to the outer shape of the sun visor S is attached to the lower surface of the movable base.

Reference numeral 5 denotes an upper mold which faces above the lower mold 1 and is fitted onto the inner surface of the cutting blade 4 via a cushion body 6, and a molding convex portion 5a is formed around the periphery of the upper mold. A molding recess 5b for molding one half of the sun visor is formed inside the projection 5a, and a rough surface R2 is formed on the surfaces of the molding projection 5a and molding recess 5b, which serve as pressing surfaces. It is formed in a pattern.

Numeral 7 is a heater for melting the surface of the molded object prior to molding, and three heaters 7 to 7 are spaced apart from each other in the vertical direction and are placed between the upper and lower molds 5 and 1. It is suspended horizontally so that it can be accessed.

8 is a heating element built into the lower mold 1, and 9 is a heating element built into the upper mold 5. The temperature and heating time can be adjusted by an adjustment device (not shown) depending on the material, surface shape, etc. of the object to be molded. be adjusted.

Next, a method of molding the sun visor S using the molding apparatus described above will be described.

First, a pair of substrate materials 10a and 10b are shown, respectively, which are formed into sheets of colored thermoplastic synthetic resin foam such as polyethylene foam or polypropylene foam, and which are cut in advance to be slightly larger than the external shape of the sun visor S to be molded. The mold is held horizontally by a support frame that does not move, and is inserted vertically apart between the lower mold 1 and the upper mold 5 in the upward movement position.

Then, the upper substrate material 10 is placed between the upper and lower molds 5 and 1.
The heater 7 is inserted above a, between the upper and lower substrate materials 10a and 10b, and below the lower substrate material 10b, and the upper and lower substrate materials 10a and 10b are inserted.
The upper and lower surfaces H1 to H4 of each are heated and melted (see FIG. 1A).

Next, each heater 7 is moved out from between the upper and lower molds 5 and 1, and the frame 11 that becomes the reinforcing core material of the sun visor S is placed on the lower substrate material 10b (see FIG. 1B). Then, the movable table 3 is moved down to heat and press both the substrate materials 10a and 10b containing the bone frame 11 with the upper and lower molds 5 and 1 (see FIG. 1C).

When this heated and pressurized state is continued for a predetermined period of time, both substrate materials 10a and 10b are filled into the molding recesses 5b and 1b of the upper and lower molds 5 and 1, leaving their peripheral edges, respectively, and are then press-molded. The opposing surface layers H2 and H3 are welded to each other, and the upper and lower substrate materials 10a and 10b are integrated, and the frame 1
1 is the opposing surface layer H of the upper and lower substrate materials 10a and 10b
2, H3 are integrally welded and fixed, while the peripheral edges of both substrate materials 10a, 10b are attached to upper and lower molds 5, 1.
The molded convex portions 5a and 1a are pressed together and integrated into a flat shape.

Further, the upper surface layer H1 of the upper substrate material 10a and the lower substrate material 1 are pressed against the rough surfaces R1, R2 of the uneven pattern formed on the molding surfaces of the upper and lower molds 5, 1.
In the lower surface layer H4 of 0b, the foamed structure is crushed and becomes dense, and hardened layers K and K are formed, and the surface of this hardened layer K has an uneven pattern surface O corresponding to the rough surfaces R1 and R2 in this example. Shaped into a wrinkled shape.

After that, in the secondary press of the movable table 3, the cutting blade 4 is moved downward against the stepness of the cushion body 6, and the upper and lower substrate materials 10a, 1 protrude outside the upper and lower molds 5, 1.
When the movable base 3 is moved upward after cutting the peripheral edge of the sun visor S, one cycle of molding the sun visor S is completed.

And in the molded sun visor S,
As shown in FIGS. 2 and 3, upper and lower substrate materials 10
a, 10b are integrally welded and molded at the welding interface Y, and the bone frame 11 is integrally welded and included, and the front and back surfaces of the substrate 10 have uneven pattern surfaces O, O. A hardened layer K is formed.

After molding the sun visor S, an L-shaped mounting shaft 13 is attached to the bearing 12 welded to one end of the frame 11.
is inserted.

Next, the functions and effects of the above embodiment will be explained.

Now, in this example, when molding the sun visor S, the upper and lower substrate materials 10a, 10b are welded and integrated, and at the same time, the frame 11 is attached to the substrate materials 10a, 10b.
Since the parts 0b are integrally welded and included, the board 10 can be firmly integrated by omitting the adhesive and adhesive application process for pasting the two board materials, and the reinforcing effect of the frame 11 on the board 10 can be improved. This has the effect of significantly increasing the durability of the Sun Visor S.

In particular, in this example, since the hardened layer K having the uneven pattern surface O can be formed on the front and back surfaces of the sun visor S during molding, it is possible to bond the outer skin material or the same outer skin material to cover the outer surface of the sun visor S. In addition to omitting the sewing process, it also eliminates the deformation of the substrate over time that occurs due to uneven expansion and contraction behavior when the substrate is formed by laminating different constituent materials such as outer skin materials and adhesives. In addition, the damage resistance of the sun visor S surface layer is enhanced to protect the foamed structure inside the base 10, and the sun visor S is further provided with an uneven surface effect to enhance the design effect on the appearance. There is.

In addition, when painting the surface of the sun visor S, the coating effect can be enhanced by the densified hardened layer K, and even if scratches or the like occur on the surface, they can be hidden by the uneven pattern surface O, which is convenient. be.

That is, the present invention heats and melts each surface layer of a pair of opposing substrate materials made of thermoplastic synthetic resin with a heater, inserts a frame between the two substrate materials, and then encapsulates the frame. Both substrate materials are heated and pressurized using upper and lower molds having pressure surfaces formed in an uneven pattern to weld the substrate materials and the frame together, and the surfaces of both substrate materials are welded together. By hardening and molding the back surface into an uneven pattern, the manufacturing process of sun visors can be streamlined and the physical properties and design effects of the sun visor surface can be improved, making this an extremely excellent invention as a manufacturing method for vehicle sun visors. It is.

In addition, in the said Example, the degree of densification of the hardened layer K in the sun visor S and the shape of the uneven|corrugated pattern surface O are not limited.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIGS. 1A, 2B, and 3 are explanatory diagrams sequentially showing the manufacturing process of the sun visor, FIG. 2 is a schematic plan view of the sun visor, and FIG. FIG. 2 is an enlarged sectional view taken along the - line in FIG. 2; 1... Upper mold, 5... Lower mold, 10a, 10b
...Substrate material, 11...Bone frame.

Claims (1)

[Claims] 1. After each surface layer of a pair of opposing substrate materials made of thermoplastic synthetic resin is heated and melted using a heater, a bone frame is inserted between the two substrate materials, and then both the substrates containing the bone frame are inserted. Both substrate materials and the frame are integrally welded by heating and pressurizing the materials using upper and lower molds having pressure surfaces formed in an uneven pattern, and the front and back surfaces of both substrate materials are made uneven. A method for manufacturing a vehicle sun visor, characterized by hardening and molding it into a pattern.