JP3651722B2 - Manufacturing method for vehicle seat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat manufacturing method capable of inexpensively mass-producing a design excellent vehicle seat in which a molded cushion body is bonded and integrated to a top plate portion of a bag-shaped skin material.
[0002]
[Prior art]
In the case of vehicle seats such as automobile seats, the mainstream is that a molded cushion body is bonded and integrated to the top of the bag-like skin material. Set the surface of the top plate part of the skin material on the lower mold and place the molded cushion body upside down and press it with the upper mold to form the molded cushion on the back of the top plate part of the skin material It is common to integrate the body into an adhesive that interposes the body, but the conventional one made of a single fabric for the top plate of the skin material has little change in the design pattern of the fabric and is designed In recent years, it has come to be preferred to have several different fabrics stitched together so that a deep groove is formed in the top plate or the pattern is changed, and a change is made at the seam. ing. However, in order to form a deep groove in the top plate or to sew a plurality of dissimilar fabrics, it is inevitable that the sewing work and the pull-in work for forming the deep groove are troublesome and costly. there were.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to solve the above-mentioned conventional problems, and for a vehicle that can mass-produce a design-excellent vehicle seat having a three-dimensional feeling on a sheet top plate with a simple work at a low cost. It is in providing the manufacturing method of a sheet | seat.
[0004]
[Means for Solving the Problems]
A vehicle seat manufacturing method according to the present invention made to solve the above-mentioned problems is a bag-shaped skin material having a top plate portion as a seamless fabric, with a portion corresponding to the parting portion on the surface as a boundary. The design pattern is formed, and the ridge part for forming the parting part is formed on the mold surface, and the ridge part of the lower mold having a vacuum forming function is matched with the boundary part of the design pattern, After setting the top plate part surface of the skin material as the mold surface side , suction pressure is applied to this lower mold so that the top plate part is adsorbed and held on the lower mold surface and the cut-off part is formed by the ridges. Next, a molded cushion body on which the deep groove corresponding to the ridge portion of the lower mold is formed on the surface is placed as an inverted shape, and then pressed by the upper mold on the back surface of the top plate portion of the skin material. The molded cushion body is integrated with the adhesive interposed between them. It is an feature.
[0005]
In the invention as described above, the top plate portion of the bag-shaped skin material is made of a laminated fabric in which a wadding material is laminated on the back surface of the seamless fabric, and the laminated fabric is used as a bag-shaped skin material. Prior to setting to the lower mold, the alignment work when the skin material is set to the lower mold is facilitated by embossing the part corresponding to the parting portion with the tooth mold according to claim 2. Further, in each of the inventions as described above, a hot melt in which an adhesive interposed between the top plate portion of the skin material and the molded cushion body is previously layered on either the top plate portion or the molded cushion body. The invention according to claim 3 is an adhesive which is provided with an adhesive ability by heating with a thermal fluid supplied from the lower mold.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 is a bag-shaped skin material in which a collar 3 made of an arbitrary material is stitched to a top plate 2 made of a seamless fabric, and a double row of different patterns extending in the front-rear direction on the surface of the top plate 2 5a, 5b, and 5c are formed, and in the boundary portion of the different patterns 5a, 5b, and 5c, the top plate portion 2 is formed with a parting portion 4 having a V-shaped cross section to be described later, In addition, positioning points for facilitating alignment with the set reference pins are formed at both ends of each parting part 4. The above-mentioned different band patterns 5a, 5b and 5c have different design such as different colors depending on the fiber and print, different patterns, and different touches by flocking. A different pattern by any means may be used as long as it is a different pattern. Further, the top plate portion 2 may be made of a seamless fabric, but may be made of a laminated fabric in which a wadding material 2b is laminated on the back surface of the outer surface 2a as shown in the figure. Before the skin material 1 is set in the lower mold, as shown in FIG. 6, it is preferable that the embossing 6 by the tooth mold is applied to the portion corresponding to the parting portion 4 of the laminated fabric. The top plate portion 2 made of a seamless fabric as described above can be easily obtained by simply cutting to a required size using a cutting die (not shown) from a roll wound as shown in FIG. it can.
[0007]
On the other hand, 11 is a molded cushion body integrated with the back surface of the top plate portion 2 of the bag-shaped skin material 1, and this molded cushion body 11 is formed by a well-known foam molding method using polyurethane resin or the like as a material. Since it is obtained, detailed description is omitted, but a deep groove 12 corresponding to a ridge portion 22 of the lower mold 21 to be described later is formed on the surface, and a back surface 13 of the molded cushion body 11 is a frame. It is formed so as to be in a shape that can be fitted to. In the case of the surface of the molded cushion 11 or the rearmost surface of the top plate portion 2 of the skin material 1, that is, the laminated skin material, a hot melt adhesive is previously layered on the back surface of the wadding material 2b. Is preferred.
[0008]
Reference numeral 21 denotes a lower mold having a vacuum forming function in which a ridge 22 for forming a parting portion having a mountain-shaped cross section is formed on the mold surface. A fine hole 23 that also serves as an object is disposed, and reference numeral 24 denotes an upper mold that can be brought into and out of contact with the lower mold 21. A molding mold composed of the lower mold 21 and the upper mold 24 is also a ridge 22. Except for the fact that is formed, there is almost no change from the conventional mold used in this type of vehicle seat manufacturing method, and therefore detailed description thereof is omitted.
[0009]
Next, a process of bonding the molded cushion body 11 to the back surface of the top plate portion 2 of the bag-shaped skin material 1 using the lower mold 21 and the upper mold 24 will be described.
First, a bag-shaped skin material 1 in which the top plate portion 2 is made of a seamless fabric is used, and this skin material 1 is applied to a lower mold 21 having a vacuum forming function in which a ridge portion 22 for forming a parting portion is formed on the mold surface. With the surface of the top plate portion 2 as the mold surface side, the portion of the stamping 6 by the above-described tooth mold is set at the top of the ridge 22, and then the mold surface of the lower mold 21 is passed through the pores 23. When the suction pressure is applied, as shown in FIG. 1, the top plate portion 2 is sucked and held on the mold surface of the lower mold 21, and at the same time, the ridge 22 formed on the mold surface of the lower mold 21. A parting portion 4 having a V-shaped cross section is formed on the top plate portion 2 of the skin material 1.
[0010]
If the bag-shaped skin material 1 is thus set on the lower mold 21 and sucked and held on the mold surface, it corresponds to the ridge portion 22 of the lower mold 21 as shown in FIG. The molded cushion body 11 having the deep groove 12 to be formed on the surface is turned upside down and placed in a state where the V-shaped parting portion 4 and the deep groove 12 are matched, and the mold surface is placed on the back surface 13 of the molded cushion body 11. , The upper die 24 is lowered, and as shown in FIG. 3, the molded cushion body 11 and the top plate portion 2 of the skin material 1 are pressed and clamped by the lower die 21 and the upper die 24. When the suction pressure on the mold surface of the lower mold 21 is released and a thermal fluid such as high-pressure steam is supplied to the mold surface through the pores 23, the thermal fluid is passed through the top plate portion 2 of the skin material 1 and the top plate. A hot-melt adhesive with a molded cushion on the back of the part is heated to provide adhesion. Therefore, the molded cushion body 11 is bonded and integrated with the back surface of the top plate portion 2 of the skin material 1 by this hot melt adhesive, and thereafter, the hot fluid supplied to the mold surface through the pores 23 is cooled with cold air. Then, the hot melt adhesive is cooled and solidified, and the upper die 24 is raised to remove the mold. Then, if the flange portion 3 is reversed and the periphery of the molded cushion body 11 is covered with the flange portion 3, a product as shown in FIG. 4 is obtained, and this is applied to the frame like this conventional vehicle seat. Install and use.
[0011]
The vehicle seat thus obtained has a double row of dissimilar patterns 5a extending in the front-rear direction on the surface of the top plate portion 2 even though the top plate portion 2 of the skin material 1 is made of one piece of fabric. 5b and 5c are formed, and the boundary portions of the different patterns 5a, 5b and 5c are bitten into the deep groove 12 of the molded cushion body 11 as a parting portion 4 having a V-shaped cross section. It has the same three-dimensional feeling as a vehicle seat manufactured by a conventional complicated manufacturing process in which different types of fabrics are sewn and changed at the seam, and the stitched part is deeply drawn, and it is also excellent in color tone. The design will be excellent. In addition, the manufacturing process does not require the need to sew a plurality of dissimilar fabrics, and the drawing operation and the assembling operation to the frame can be greatly simplified, so that it can be provided at low cost.
[0012]
【The invention's effect】
As is apparent from the above description, the present invention has been developed as a manufacturing method of a vehicle seat that can be mass-produced at a low cost with a simple work by providing a vehicle seat with a three-dimensional effect on the top plate of the seat. Some of the contributions are extremely large.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a state in which a skin material is sucked into a lower mold in the method of the present invention.
FIG. 2 is a cross-sectional view showing a state in which a molded cushion body is placed on a lower mold from which a skin material is sucked in the method of the present invention.
FIG. 3 is a cross-sectional view showing a process of bonding a molded cushion body to the skin material by pressurization with an upper mold in the method of the present invention.
FIG. 4 is a partially cutaway front view showing an example of a vehicle seat obtained by the method of the present invention.
FIG. 5 is a perspective view of a cloth wound in a roll shape that is a material of a top plate portion of a skin material used in the method of the present invention.
FIG. 6 is a cross-sectional view showing an example of the top plate portion of the skin material used in the method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bag-shaped skin material 2 Top plate part 4 Crossing part which makes a cross-section V shape
11 Molded cushion body
12 Deep groove
21 Lower mold
22 Sectional ridges
23 pores
24 Upper mold

Claims (3)

The bag-shaped skin material with the top plate as a seamless fabric is formed with a design pattern on the surface with the part corresponding to the parting part as the boundary, and the ridge part for parting part molding is on the mold surface. After aligning the boundary part of this design pattern with the formed ridge of the lower mold having the vacuum forming function and setting the top plate surface of the skin material as the mold surface side , suction pressure is applied to the lower mold. The top plate portion is attracted and held on the mold surface of the lower mold and a parting portion is formed by the ridge portion, and then a deep groove corresponding to the ridge portion of the lower mold is formed on the surface. The molded cushion body is placed in an inverted shape and pressed by the upper mold so that the molded cushion body is integrated with the adhesive interposed between the top and bottom surfaces of the skin material. A method for manufacturing a vehicle seat. The top plate of the bag-shaped skin material is made of a laminated fabric in which a wadding material is laminated on the back of the seamless fabric, and before this laminated fabric is set in the lower mold as a bag-shaped skin material, 2. The vehicle seat manufacturing method according to claim 1, wherein the part corresponding to the parting portion is embossed with a tooth mold . Adhesive intervening between the top plate portion of the skin material and the molded cushion body is set as a hot melt adhesive layered in advance on either the top plate portion or the molded cushion body, and the heat flow supplied from the lower mold The method for producing a vehicle seat according to claim 1 or 2 , wherein the hot melt adhesive is imparted with adhesive ability by heating with a body .

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