JPS5962078A - Production of seat surface skin - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manufacturing a seat skin having an uneven pattern (1).
It is related to

In general, seats for vehicles, as shown in Figure 1, are designed to be comfortable to sit on. To prevent slippage during braking, etc., wadding C is installed between the skin material a and the wadding cover b.
A sheet skin with irregularities is applied by sandwiching the surface of the sheet.

Conventionally, this type of 7-tooth skin is made by laminating the skin material a and the wadding cover b on the wadding C, such as a polyuretano foam slab material, in advance, so that the skin material a side is facing down (and the uneven surface is formed). The top of the lower mold with raised blades that correspond to the pattern (
At the same time, when the upper mold presses the laminated material with the lower mold, it is formed by f2. However, in this sheet skin, the skin material a is pressed with the protruding blade of the lower mold as shown in the second figure. When doing this, tension is generated in the skin material a, so that tension causes the wadding C
will be pressed against the wadding cover and bulge out,
The undulations (two losses) of the uneven pattern occur only on the outside of the bulge. Therefore, not only can this uneven pattern itself not be made large, but the protrusions of the skin material A 1111+ are rounded and fully exert the anti-slip effect. I can't.

This drawback can be eliminated if the skin material a can be formed without tension, without pulling the joint with the wadding cover b, and without pressing the wadding C, as shown in Figure 3, and the uneven pattern can be created with rich undulations. The contour line can also be formed into two shapes.

The present invention is ingeniously devised to form a skin having a undulating pattern as shown in FIG.

That is, in the method for manufacturing a seat skin according to the present invention,
In advance, the skin material is formed into an uneven surface by closely following the unevenness of the lower mold, and the wadding placed over the wadding cover is press-fitted into the convex groove of the skin material by the pressure of the upper mold ( The wadding cover is crimped and fixed together with the wadding to the bottom of the four parts of the Nidorim cover.

This will be explained below based on the fourth and fifth illustrated embodiments.

In the illustrated embodiment, a high frequency welder bonding method is employed, and the upper and lower molds X and Y are constructed of welder molds. The working surface of the lower mold X is formed into an uneven surface.
Lower electrode whose convex part is made of brass etc., RL, XL
..., and is constructed by displacing a concave portion formed by two slopes of a desired shape.In addition, the lower mold The uneven surface of the lower mold X (shaped so that it can perform two functions) is formed through openings X2, x2, .

The upper mold Y constitutes the upper electrode of the welder,
The suppressing surface is formed of a smooth surface. The sheet skin formed between these upper and lower dies is skin material a, wadingka/
A wadding C is inserted between the wadding C1 and the wadding C1. The skin material a and the wadding cover b are made of PVC or the like which can be welded by high-frequency welding, and the wadding C is preferably made of polyurethane foam, slab fiber for high-frequency welding, or the like with high elongation.

When using these skin removal materials, first, the skin material a is molded into an uneven surface by closely contacting it along the unevenness (two) of the lower mold X. By holding it with the clamps P, heating it with the heater H to soften it, and drawing it into the recess of the lower mold Xυ with the suction of the vacuum V, it can be easily placed in close contact with the unevenness of the lower mold X (Fig. 4a). , b).This skin material a (Secondly, the wadding C, which remains in the form of a board, and the wadding cover b are placed one on top of the other.The = VIR is determined even after the skin material a is formed or after the skin material a is formed. Vacuum of .

After the wadding cover b is placed iFl, they are suppressed by the lower die
is now press-fitted into the convex recess of the skin material a, and the wadding cover b is inserted into the lower electrode area of the lower die X, , 'El
and the upper electrode of the upper mold Y, so that the wadding C and the C2 are welded and fixed to the bottom of the recess of the skin layer A (see Figure 4 d).

In the sheet skin obtained in this manner, the skin material a is formed in advance into an uneven pattern so as to have a contour shape corresponding to the desired pattern (2). At the same time, since the wadding cover 1) is welded and fixed together with the wadding C to the bottom surface of the concave portion of the skin material a, an uneven pattern can be formed without imparting tension to the skin material.

In addition, for the production of this sheet skin (second step), a slide base S is attached to a high-frequency welding machine W as shown in Fig. , With the lower mold in front (- pulled out), soften the skin material with heater H, wadding, and place a wadding cover, then apply 1.6 frequency 9 elder mW upper mold Y
11 can be used. Also,
If the slide base S is configured with a turntable, it is possible to use a high-frequency welder (1) to carry in and out the lower mold from several locations. It is possible to use #8 type, ultrasonic waves, etc., and it is also possible to use an adhesive at the welding location.

After inserting the wadding c' and wadding cover b four times, place the silicone film on the lower mold X. Just peel it off.

As described above, according to the present invention (--the manufacturing method of the seat skin), the undulations of the uneven pattern can be formed relatively large and in small pieces, so that the appearance is good and the effect of the anti-slip temple is fully exerted. The seat skin that forms becomes (().

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a sheet with an uneven pattern, Fig. 2 is a partially enlarged sectional view of an uneven pattern obtained by a conventional method, and Fig. 3 is a side sectional view of a sheet with an uneven pattern produced by the present invention. FIGS. 4a to 4d are explanatory diagrams showing the manufacturing process of the sheet skin according to the present invention (1), and FIG. 5 is a side view showing an example of the sheet skin manufacturing machine used in the present invention. X: lower mold, Y: upper mold% a: skin material, b: wadding cover, C: wadding, v: vacuum. Patent applicant Tokyo Sheet Co., Ltd.

Claims (1)

[Scope of Claims] (11) A method for manufacturing a seat skin having a relatively undulating (two-pronged pattern), comprising: forming an uneven surface (two moldings) by rolling the bottom die (one row) and bringing the skin material together; and its uneven surface width (
= Lay the wadding and wadding cover on top of each other, and then place the wadding on the flat surface of the upper mold in the convex part of the skin material using two-pressure method (C). A method for manufacturing a seat skin, characterized in that the bottom surface is fixed by two pressure bonds. (2) After the above skin material is heated and softened, it is sucked with a vacuum to form an uneven surface 4 and a solid wall. A method for manufacturing a seat skin according to claim 1. (3) A method for manufacturing a seat skin according to claim 1, in which the skin bending force bar is welded and fixed.