JPH0215232B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a skin for a bucket-type seat having an uneven pattern on the plane of the seat.

Conventionally, this type of seat skin is made of a material in which a skin material B and a wading cover C are laminated on the front and back surfaces of a slab A, such as a polyurethane foam, as shown in Figure 1. female type
The laminated material was heated to 120 to 200℃ using a male type Y _{1 with} ridges and corresponding bulges on the left and right sides.
It is manufactured by pressing under moderate heat to form a curved part and an uneven pattern corresponding to the edge part. However, the sheet skin A ₁ obtained by this manufacturing method
The cost is high because the expensive polyurethane foam slab a is interposed in the left and right edges, and the skin material b and wading cover c are made of a thick laminated material with the polyurethane foam slab a laminated in advance. Due to compression, the creases that occur in the skin material B cannot be removed, and the deep drawing edge line cannot be made as desired, making it round, and even if you try to force it to align with the cushion mold B ₁ , it will not be fixed. It has the disadvantage that it cannot be pushed too hard because it has become a target.

Furthermore, conventionally, as shown in the second figure, a female type having a concave portion corresponding to the end portion and a protrusion forming an uneven pattern is used.
X ₂ , a male type with a convex part that fits into the concave part of the female type X ₂ , and a receiving groove that receives the uneven pattern protrusion.
Seat skin A ₂ is also manufactured by clamping and pressing only skin material b with Y ₂ under steam heating. This seat skin A ₂ is attached to a cushion mold B ₂ which has a concave groove on the seat plane that accepts the tightening of the uneven pattern, but since the uneven pattern is formed without using wading. It is extremely uncomfortable to sit on, and it is difficult to narrow down the wading to match the concave groove of the cushion mold B ₂ , which tends to cause misalignment. Moreover, the skin material B is pressed between the female molds X ₂ and male Y ₂ . Long brushed types have the disadvantage that the hair tends to fall off and spoil the appearance.

An object of the present invention is to provide an improved method for manufacturing a seat skin in order to eliminate such drawbacks.

That is, in the method for manufacturing a seat skin according to the present invention, the wading lined with the wading cover is cut into a size corresponding to the plane of the seat part, and a female mold is formed which has bulges on the left and right sides corresponding to the edge parts. After applying adhesive to the wading plane in advance, a skin material whose edges are clamped with clamps is placed on the female mold, and the skin material is shaped into an uneven pattern. Seat skins are manufactured by pressing a male mold with a protruding blade to the wading under heat.

This will be explained below based on the third to fifth illustrated embodiments.

The third illustrated embodiment shows the basic manufacturing process of the seat skin. The seat skin A manufactured using wadding constitutes a bucket-shaped seat that has an uneven pattern on the plane of the seat and has ridges on the left and right sides. It is formed by welding and fixing material b and wading cover c. Further, it is preferable to use a polyurethane slab with high elongation for the wading a forming the seat skin A, a fabric or the like can be used as the skin material b, and a non-woven fabric or the like can be used for the wading cover c. The molds used are a female mold X having bulges x ₁ and x ₁ corresponding to the left and right edges, and a male mold Y having protruding edges y in a pattern corresponding to the uneven pattern. The female type X can be heated by circulating steam, and the male type Y
is configured to be heated by incorporating a heater or the like.

The wading a and the wading cover c are bonded together in advance with an adhesive or the like. When laminating, materials a and c can be continuously fed out and joined together (see figure a).
It can be used by cutting to a fixed size after pasting. It is sufficient to make the size of the sheet correspond to the flat area of the seat portion of the sheet, and after cutting, adhesive e is applied to the wading a side of the laminate material (see Figure b). A urethane-based adhesive is preferably used as the adhesive e, and can be easily applied with a spray gun. After applying the adhesive, the laminate materials a and c are placed in the recesses of a female mold X having left and right grips and corresponding bulges x ₁ and x ₁ . The recess of the female mold X is formed to have approximately the same dimensions as the plane of the seat of the desired seat, and the laminate materials a and c fit into the recess (see Figure c). Next, the skin material b is placed on the female mold X so as to cover it. This skin material b is placed under tension by clamping the edges hanging down from the bulges x ₁ , x ₁ of the female mold X to the peripheral side surface with clamps P. In the illustrated embodiment, the edge clamping is carried out at a position slightly away from the circumferential surface of the female mold It can also be tightly attached to the circumferential side (see Figure d). After placing the base fabric b in tension, the male mold Y is moved downward, and the skin material b is placed in the recess of the female mold X with protruding blades y in an arrangement corresponding to the uneven pattern.The laminate material a, Press c. At this time, the male mold Y is heated by a heater, and the female mold X is heated by supplying steam, and the skin material b is heated and pressed onto the laminate materials a and c. In this heat pressing, the protruding blade y of the male type Y press-fits the skin material b into the wading a and fixes it by welding to the wading cover c. Glue and fix (see Figure e). In addition, in the bulging portions x ₁ and x ₁ of the female mold can be heated and molded. In this curved surface forming, when the edge of the skin material b is pulled diagonally as in the illustrated embodiment, the side press frame F is pressed by the male die Y and the cylinder S placed nearby is operated to move the side press frame F onto the skin material. b
It is preferable to press the skin material b pressed against the edge side of the female mold X against the circumferential surface of the female mold X. This heat forming operation can be completed in about 2 to 3 minutes, and the supply of steam can also be completed in about 8 seconds (see Figure f). After the work is completed, wading a is applied only to the part corresponding to the seat plane.
A seat can be constructed by removing the seat skin A, in which the wading cover c is integrally molded with the skin material b, from the female mold X, and aligning and attaching it to the separately prepared cushion mold B and bottom frame C (Fig. (see g).

In the fourth and fifth illustrated embodiments, another method of manufacturing the above-mentioned seat skin is shown. The uneven pattern can also be formed as a button pattern, and in this case, the protruding blade y of the male type Y may be formed into a cylindrical shape. In addition, it is possible to create a suspended structure for the skin A along with forming an uneven pattern.
In this case, an adhesive or an adhesive film f may be interposed on the back side of the wading cover c, and the metal fitting or nonwoven fabric g into which the trim wire W is inserted may be joined by pressing the male type Y (see Fig. 4). (see a, b). In addition, in order to sharply form the contour corners in the protruding parts of the wading pattern, the protrusions x ₂ and x ₂ are made so that they correspond to the slightly inner position of the protruding blade y of the male mold on the seat plane of the female mold X. The wading a may be pushed up from the back side together with the male type pressing force. In this compression molding, the wading part pushed up by the protrusions x ₂ and x ₂ becomes dense, so the uneven pattern makes the contour line beautiful and can be maintained without crushing (see Figures 5 a and b). ).

As described above, according to the method of manufacturing a seat skin according to the present invention, expensive wading is used only on the seat plane, and a curvature surface corresponding to the back portion is formed only from the base fabric. Therefore, the seat skin can be made at low cost, and since the left and right grip portions are pressed into contact with the female bulge from the back side, it can be formed into the desired shape and can be easily aligned with the cushion form. Even if a raised cloth is used, the hair will not fall off, so the appearance will not be damaged. In addition, the seat plane is formed using wadding, making it comfortable to sit on.
Moreover, since the skin material is pressed and bonded without being laminated in advance, tension molding can be performed without causing creases.

[Brief explanation of drawings]

Figures 1a, b and 2a, b are explanatory diagrams showing the manufacturing process of the seat skin according to the conventional example, and Figures 3a to 3
FIG. 4g is an explanatory view showing the manufacturing process of a seat skin according to the present invention, and FIGS. 4a and 5b and FIGS. X: female type, x ₁ , x ₂ : bulging part corresponding to the grip part, Y: male type, y: protruding blade, a: wading,
b: skin material, c: wading cover, e: adhesive.

Claims (1)

[Claims] 1. A manufacturing method for forming the seat skin of a bucket-type seat that has an uneven pattern on the plane of the seat and has grooves on the left and right sides, and a knife that has bulges on the left and right sides corresponding to the grooves. Place the wadding lined with a wading cover on the flat surface of the mold's recess, apply adhesive to the flat surface of the wadding in advance, and place the skin material with the edge clamped onto the female mold to cover it. A method for manufacturing a seat skin, characterized in that the skin material is pressed and bonded to the wading under heat using a male mold having protruding blades corresponding to the uneven pattern.