JP2974838B2 - Manufacturing method of cushion body for seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a seat cushion for a vehicle or the like in which a seat cover is attached to a surface of a mold pad.

[0002]

2. Description of the Related Art Conventionally, in manufacturing a cushion body for a vehicle or the like in which a seat cover is attached to a surface of a mold pad, as shown in FIG.
To the seat cover 22 set in the
3 on the surface of the mold pad 24 by pressing the mold pad 24 coated with
At the time of bonding, the grooves 25, 2 of the mold pad 24 are
5 is provided on the lower mold 21 provided with the ridges 26 corresponding to the ridges 5, the stitching portions 27, 27 of the seat cover 22 are aligned with the top edges 26 a of the ridges 26. Was set, and the stitched portion 27 of the seat cover 22 was pressed into the groove 25 of the mold pad 24 and adhered to the groove 25.

[0003]

In the case of the above-mentioned prior art, when the seat cover 22 is set, the sewn portion 27 is straightened so as to coincide with the top edge 26a of the ridge portion 26 of the lower die 21. When pressing the mold pad 24, FIG.
As shown in the figure, the stitching portion 27 is in a state of meandering to the left and right, and is often displaced from the top edge 26a of the ridge portion 26. Since the seat cushion is pressed down and bonded and fixed, the seam 27 of the seat cover 22 is separated from the bottom surface of the groove 25 of the mold pad 24 in the product cushion body, and the appearance and quality are poor. was there. An object of the present invention is to solve the above problems.

[0004]

In order to solve the above problems, a method of manufacturing a cushion member for a seat according to the present invention comprises inserting a core rod in advance into a bag formed along a seam at a seam of a seat cover. In this state, the seat cover is set on the lower mold, and then a mold pad to which an adhesive has been applied is overlapped on the seat cover and pressed from above, and the bag portion and the core rod are fixed together. After being pressed into the groove of the mold pad to adhere the mold pad to the seat cover, the core rod is removed from the bag.

[0005]

When the seat cover is set on the lower mold, the mold pad on which the adhesive is applied in advance is overlapped on the seat cover and pressed from above, and formed along the seam at the seam of the seat cover. When the core bar was inserted into the bag portion in advance and the sewn portion was reinforced, the bag portion of the seat cover was held in a straight line by the core bar without meandering or bending deformation right and left. As it is, it is pushed into the groove of the mold pad. After bonding the seat cover and the mold pad, the core bar in the bag portion is pulled out, and the seam of the seat cover is inserted into the groove portion of the mold pad in a normal state. A cushion body is obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG.

A seat cover 2 is provided on the surface of the mold pad 1.
In the production of the seat cushion body C for a vehicle or the like of the present embodiment, the mold pad 1 to which the adhesive 3 has been applied is superimposed on the seat cover 2 set on the lower mold 4 in advance. The sheet cover 2 is bonded to the surface of the mold pad 1 by pressing from above.

On the surface of the mold pad 1, two linear grooves 5, 5 are formed in parallel.

In the lower mold 4, two linear ridges 6, 6 are provided in parallel with each other so as to correspond to the two grooves 5 of the mold pad 1, respectively.

In the seat cover 2 formed by sewing a plurality of cut pieces for the seat cover, two sewn portions 7, 7 near the center correspond to the two grooves 5 of the mold pad 1, respectively. It is provided in.

Therefore, the seat cover 2 adhered to the surface of the mold pad 1 has the two stitches 7
Are set on the lower die 4 in a state where they are aligned with the top edges 6a of the two ridges 6 respectively. The two core rods 8, 8 are attached to the seat cover 2 in the following manner so that the seam portions 7 are pressed into the groove portions 5 of the mold pad 1 and bonded without meandering or distorting left and right. Is used as such.

Each sewn portion 7 of the seat cover 2 is formed by overlapping the edges of the two cut pieces and sewing them with a pair of parallel stitches 9 to 9, respectively.
Bag portions 10, 10 are formed between the two seams 9 along the seam 9. Seat cover 2 in bag section 10
Prior to bonding between the mold pad 1 and the mold pad 1, the core rod 8 is inserted in advance.

The core rod 8 is made of resin or the like having appropriate rigidity and bending elasticity, and the sewn portions 7 of the seat cover 2 are restricted in bending deformation by the core rods 8 in the bag portions 10. Have been.

The bag portion 10 is provided in such a size that the entire sewing portion 7 can be pushed into the groove portion 5 of the mold pad 1 with the core rod 8 inserted. One end of each core rod 8 protrudes outward from the end of each bag part 10, so that the core rod 8 can be extracted from the inside of the bag part 10.

When the core rod 8 is inserted into the bag portion 10, two parallel seams 9 are formed in a state where the core rod 8 is sandwiched between the edges of the two cut pieces. In addition to the method of inserting the core rod 8 into the bag portion 10, the bag portion 10 is formed by forming parallel seams 9 in advance, and then the bag portion 1 is formed.
For example, a method of inserting the core rod 8 into 0 is used.

The seat cover 2 with the core rod 8 inserted into the bag portion 10 is set on the lower die 4 such that the core rod 8 is placed on the top edge 6a of the ridge 6 of the lower die 4. Thus, the stitched portion 7 held in a straight line by the core rod 8 is automatically aligned with the top edge 6 a of the ridge 6.

Next, the mold pad 1 on which the adhesive 3 has been applied in advance is superimposed on the sheet cover 2 on the lower die 4 and pressed from above, so that the mold pad 1 and the sheet cover 2 are joined together. Glue. For example, by lowering an upper mold (not shown) installed above the mold pad 1, the mold pad 1 is pressed against the seat cover 2, and the seat cover 2 is pressure-bonded to the surface of the mold pad 1.

Here, by pressing the mold pad 1,
When the ridge 6 of the lower mold 4 fits into the groove 5 of the mold pad 1, the sewn portion 7 of the seat cover 2 located on the top edge 6a of the ridge 6 retains its form. Is pressed into the groove 5 of the mold pad 1.

That is, while the bag portion 10 of the sewn portion 7 of the seat cover 2 is held linearly by the core rod 8, the bag portion 10 is pushed together with the core rod 8 into the groove 5 of the mold pad 1. Thus, the sewn portion 7 of the seat cover 2 is inserted into the groove 5 of the mold pad 1 and adhered to the groove 5 without meandering or bending deformation.

A seat cover 2 is provided on the surface of the mold pad 1.
After bonding, the core rod 8 inserted into the bag portion 10 is in a state of protruding outward from the end of the groove portion 5 of the mold pad 1. In addition, the hard core rod 8 does not cause a foreign body sensation in the seat cushion C.

As described above, the sewing portion 7 of the seat cover 2
Are adhered along the groove 5 of the mold pad 1 in an appropriate state, and the cushioning member C for a seat having good appearance and quality is manufactured.

According to this embodiment, when the mold pad 1 is pressed against the seat cover 2 set on the lower mold 4,
The seam 7 of the seat cover 2 can be pushed into the groove 5 of the mold pad 1 without meandering and bending or bending, so that the seam 7 of the seat cover 2 can be Is bonded to the groove 5 in an appropriate state, so that the shape stability of the manufactured cushion body C for a seat is good, and a product having good appearance and stable quality can be manufactured.

Further, according to the present embodiment, when the seat cover 2 is set on the lower mold 4, the positioning of the sewing portion 7 of the seat cover 2 is facilitated by the core rod 8 inserted into the bag portion 10. .

[0024]

According to the present invention, the sewn portion of the seat cover is inserted into the groove of the mold pad in an appropriate state without the meandering sideways or bending deformation. The seat portion can be bonded to the groove portion, and it is possible to produce a seat cushion body having a good appearance and good form stability, thereby achieving an effect of improving the quality of the product. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state before a mold pad is pressure-bonded to a seat cover set on a lower mold in a method of manufacturing a cushioning body for a seat according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part showing a state where a core rod is inserted into a bag part of a seat cover.

FIG. 3 is an enlarged perspective view of a main part showing a state in which a sewing portion of the seat cover is aligned with a top edge of a protruding ridge of a lower die.

FIG. 4 is an enlarged longitudinal sectional view of a main part showing a state where a bag portion of a seam portion of a seat cover is pushed into a groove portion of a mold pad by pressure bonding;

FIG. 5 is a perspective view showing a state in which a core bar is being removed after a sheet cover is adhered to a surface of a mold pad.

FIG. 6 is a longitudinal sectional view showing a state before a mold pad is pressure-bonded to a seat cover set in a lower mold in a method of manufacturing a conventional seat cushion body.

FIG. 7 is a perspective view of a main part showing an example of a state in which the stitched portion of the seat cover is displaced from the top edge of the lower ridge in the conventional example of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold pad 2 Seat cover 4 Lower mold 5 Groove part 7 Seam part 8 Core rod 9 Seam 10 Bag part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-279279 (JP, A) JP-A-3-55800 (JP, U) JP-A-2-127298 (JP, U) JP-A-59-279279 64066 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B68G 7/05 A47C 31/02 B29C 65/70

Claims (1)

(57) [Claims] 1. A seat cover is set on a lower mold in a state in which a core rod is inserted in a bag portion formed along a seam at a seam portion of a seat cover, and then an adhesive is applied in advance. After the mold pad is overlaid on the seat cover and pressed down from above, the bag portion is pushed into the groove of the mold pad together with the core rod to bond the mold pad to the seat cover, and then the A method for manufacturing a cushion body for a seat, comprising: extracting the core rod from a seat.