JP2000093670A - Formation of fiber cushion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and rapidly insert plural fiber blocks into a mold with sure positioning, accurately mold a shape with a penetrating hole with good precision, and improve durability by improving strength of peripheral edge of the penetrating hole. SOLUTION: Fiber blocks 2a-2c are formed of regular PET fibers and low- melting-point PET fibers. Plural protruding part 17 corresponding to the shape of plural penetrating holes which are formed in a fiber cushion body 1 are formed in the lower mold 12 of a mold 11. Holes 21a-21c of smaller diameter than that of the protruding parts 17 of the mold are formed in the plural fiber blocks 2a-2c. The holes 21a-21c of the plural fiber blocks 2a-2c are press to fit to the protruding parts 17 of the lower mold 12. The peripheral edge of the plural penetrating holes formed on the fiber cushion body is formed with increased density.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a fiber cushion body, and more specifically, a plurality of fiber blocks are put into a heating mold having a lower mold and an upper mold, and hot air is supplied to the heating mold. To form a fiber cushion body having a desired shape.

[0002]

2. Description of the Related Art In recent years, a seat cushion, a seat back and the like of a vehicle seat use a cushion body made of a fiber cushion body. Fiber cushion body 1 shown in FIG.
As shown in FIG. 5, a plurality of fiber blocks 2a, 2 made of felt or the like containing synthetic resin fibers such as PET fibers.
b, 2c...

The plurality of fiber blocks 2a, 2b, 2
Molding die 1 with molding surface formed of punching metal
1 is sequentially inserted into the lower mold 12 and is clamped by the upper mold 13 whose molding surface is formed of punching metal, and then the heating means 15 such as a hot air generator or the like generates a plurality of fiber blocks 2a, 2b, 2
are heated by hot air to form a fiber cushion body 1 having a desired shape, and left to cool, and then the molding die 11
Thus, the fiber cushion body 1 is formed by taking out.

As shown in FIG. 4, the fiber cushion body 1 has a through hole 1a for inserting a headrest stay holder.
Also, a through hole 1b for buttoning the skin material is formed,
It is difficult to form the fiber cushion body 1 after molding, and it is preferable to form the fiber cushion body 1 at the time of molding.

[0005]

However, in the case where the through hole 1a for inserting the headrest stay holder and the through hole 1b for buttoning the skin material are formed in the conventional fiber cushion body 1, the through holes 1a and 1b are formed. It is difficult to form the shape of the fiber block accurately and accurately.
.., 2c... have a disadvantage that the fiber cushion body 1 having a desired shape cannot be obtained. Further, the outer peripheral edges of the through holes 1a, 1b are the same in strength as the fiber cushion body 1, and the members inserted into the through holes 1a, 1b are rubbed, so that the outer peripheral edges of the through holes 1a, 1b are easily damaged, and the durability is improved. Had the shortcomings that were missing.

SUMMARY OF THE INVENTION It is an object of the present invention to position a plurality of fiber blocks for forming a fiber cushion body securely in a molding die and to insert the fiber blocks easily and quickly. The work efficiency can be improved by greatly reducing the input work, the shape of the through hole can be accurately and accurately formed, and the strength of the outer peripheral edge of the through hole can be improved to improve the durability. It is an object of the present invention to provide a method for forming a fiber cushion body which is excellent in economic efficiency.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a method of forming a fiber cushion body according to the first aspect of the present invention is directed to forming a plurality of fiber blocks into a lower mold and an upper mold. In a method of forming a fiber cushion body having a desired shape by supplying hot air to the heat molding mold and supplying hot air to the heat molding die, the shape corresponds to a shape of a through hole formed in the fiber cushion body. A projection formed in a molding die, a hole having a smaller diameter than the projection of the molding die is formed in the fiber block, and a hole of the fiber block is pressed into the projection of the molding die to form a through hole formed in the fiber cushion body. Is formed by increasing the density of the outer peripheral edge.

According to a second aspect of the present invention, there is provided a method for forming a fiber cushion body, wherein a plurality of fiber blocks are charged into a heating mold having a lower mold and an upper mold, and hot air is supplied to the heating mold. In the method for molding a fiber cushion body for molding a fiber cushion body having a shape, a plurality of projections corresponding to the shapes of a plurality of through holes formed in the fiber cushion body are formed in a molding die, and a plurality of the molding dies are formed. A plurality of holes having a smaller diameter than the protrusions are formed in the plurality of fiber blocks, and the densities of the outer peripheral edges of the plurality of through holes formed in the fiber cushion body are formed by press-fitting the holes of the fiber blocks into the protrusions of the molding die. It is characterized by being raised and molded.

According to a third aspect of the present invention, there is provided a method for forming a fiber cushion, wherein a plurality of fiber blocks are charged into a heating mold having a lower mold and an upper mold, and hot air is supplied to the heating mold to provide a desired shape. In a method of forming a fiber cushion body having a shape, the fiber block is made of regular PET fiber and low melting point PET fiber having a lower melting point than the regular PET fiber, and a plurality of transparent fibers formed in the fiber cushion body. A plurality of projections corresponding to the shape of the holes are formed in the molding die, holes having a smaller diameter than the projections of the molding die are formed in the plurality of fiber blocks, and the holes of the fiber blocks are pressed into the projections of the molding die, respectively. Thereby, the density is increased at the outer peripheral edge of the plurality of through-holes formed in the fiber cushion body.

According to a fourth aspect of the present invention, there is provided a method for forming a fiber cushion body, wherein a plurality of fiber blocks are charged into a heating mold having a lower mold and an upper mold, and hot air is supplied to the heating mold to provide a desired shape. In a method of forming a fiber cushion body having a shape, the fiber block is made of regular PET fiber and low melting point PET fiber having a lower melting point than the regular PET fiber, and a plurality of transparent fibers formed in the fiber cushion body. A plurality of projections corresponding to the shape of the hole are formed in a molding die, a plurality of holes having a smaller diameter than the plurality of projections of the molding die are respectively formed in a plurality of fiber blocks, and fibers are formed in a plurality of projections of the molding die. A plurality of holes in the block are press-fitted, respectively, and a heating mold including a lower mold and an upper mold is clamped, and hot air is supplied to the heating mold to heat mold a plurality of fiber blocks, thereby forming a fiber cushion. After molding and the fibrous cushion body is cooled by supplying cold air, characterized by molding by increasing the density of the outer peripheral edge of the plurality of through holes formed in the fibrous cushion body.

According to the method for forming a fiber cushion body according to the first aspect of the present invention, the protrusion corresponding to the shape of the through hole formed in the fiber cushion body is formed in the forming die, and the protrusion of the forming die is formed. A hole smaller in diameter than the part is formed in the fiber block, and the density of the outer peripheral edge of the through hole formed in the fiber cushion body is increased by press-fitting the hole of the fiber block into the protrusion of the molding die. The fiber block can be reliably positioned and easily and quickly inserted into the protrusions of the plurality of protrusions, and there is no possibility that a plurality of fiber blocks are restricted by the protrusions to cause a displacement, thereby improving the efficiency of the loading operation. It is possible to form the shape of the through hole accurately and accurately,
The durability can be improved by improving the strength of the outer peripheral edge of the through hole.

According to the method for forming a fiber cushion body of the present invention, a plurality of projections corresponding to the shapes of the plurality of through holes formed in the fiber cushion body are formed in a molding die. A plurality of holes having a smaller diameter than a plurality of protrusions of the molding die are formed in the plurality of fiber blocks, and a plurality of through holes formed in the fiber cushion body are formed by pressing the holes of the fiber block into the protrusions of the molding die, respectively. Since the outer peripheral edge is formed with a higher density, the fiber block can be reliably positioned on the plurality of protrusions of the mold and inserted easily and quickly, and the plurality of fiber blocks are regulated by the plurality of protrusions. There is no risk of misalignment, the efficiency of the charging operation can be improved, the shape of the plurality of through holes can be accurately and accurately formed, and the strength of the outer peripheral edge of the plurality of through holes can be improved to improve durability. To improve It can be.

According to the method for forming a fiber cushion body of the present invention, the fiber block is made of regular PE.
A plurality of projections corresponding to the shape of the plurality of through holes formed in the fiber cushion body are formed in a molding die, which are composed of a T fiber and a low melting point PET fiber having a lower melting point than the regular PET fiber. The density of the outer peripheral edge of the plurality of through-holes formed in the fiber cushion body is increased by forming holes having a smaller diameter than the protrusions in the plurality of fiber blocks and press-fitting the holes of the fiber blocks into the protrusions of the molding die. Since the molding is performed, the fiber block can be reliably positioned and inserted into the plurality of protrusions of the molding die easily and quickly, and there is no possibility that the plurality of fiber blocks are restricted by the plurality of protrusions and cause a displacement. The efficiency of the charging operation can be improved, and the low melting point PET fiber becomes the binder fiber to make regular PE.
The T-fibers are firmly welded, the shapes of the plurality of through-holes can be accurately and accurately formed, and the strength of the outer peripheral edge of the plurality of through-holes can be improved to improve the durability.

According to the method for forming a fiber cushion body of the present invention, the fiber block is made of regular PE.
A plurality of projections corresponding to the shape of the plurality of through holes formed in the fiber cushion body are formed in a molding die, which are composed of a T fiber and a low melting point PET fiber having a lower melting point than the regular PET fiber. A plurality of holes having a smaller diameter than the plurality of protrusions are respectively formed in the plurality of fiber blocks, and a plurality of holes of the fiber block are press-fitted into the plurality of protrusions of the molding die, respectively. After clamping the mold and supplying hot air to the heat molding die to heat-mold the plurality of fiber blocks to form the fiber cushion body, cool air is supplied to cool the fiber cushion body, and the plurality of fiber cushion bodies are formed. Since the density of the outer peripheral edge of the through hole is increased and molded, the fiber block can be securely positioned on the plurality of protrusions of the molding die and inserted easily and quickly, and the plurality of fiber blocks can be formed by the plurality of protrusions. Regulated There is no danger of displacement and the efficiency of the charging operation can be improved. The low melting point PET fiber becomes the binder fiber and the regular PET fiber is firmly welded. After forming the fiber cushion body, cool air is supplied. Since the fiber cushion body is cooled, the molding cycle can be accelerated, the shape of the plurality of through holes can be accurately and accurately formed, and the strength of the outer peripheral edge of the plurality of through holes is improved. Durability can be improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for forming a fiber cushion according to the present invention will be described in detail with reference to the drawings. 1 to 3 each show an embodiment of a method of forming a fiber cushion body according to the present invention. In this embodiment, a case where the present invention is applied to a fiber cushion body 1 of a vehicle seat will be described. However, the present invention is not limited to this. In addition, the same reference numerals are given to portions corresponding to the fiber cushion body 1, the molding die 11, and the like shown in FIGS. 4 and 5, which are the prior art, and further detailed description is omitted.

As shown in FIG. 1, an original fabric 2 made of felt or the like containing synthetic resin fibers such as PET fibers is formed from a plurality of fiber blocks 2a, 2b, 2c. In addition, in this Embodiment, it is formed from several fiber blocks 2a-2c. Further, the plurality of fiber blocks 2a to 2c are formed by mixing regular PET fibers with low melting point PET fibers having a melting point of 160 ° C. and a melting point of about 20% to 30%, which is lower than that of the regular PET fibers.

The mixing ratio of the low-melting PET fibers is not limited to the present embodiment, but can be appropriately increased or decreased, and other low-melting fibers can be used without being limited to the low-melting PET fibers. . In addition, a plurality of fiber blocks 2a to 2
c has different sizes and thicknesses, and is divided and formed in accordance with the size of the fiber cushion body 1 to be molded. In addition, the present invention is not limited to the one divided vertically, and may include the one divided left and right.

As shown in FIG. 3, in order to form a through hole 1a for inserting a headrest stay holder and a through hole 1b for pushing a button on a skin material, the through holes 1a and 1b formed in the fiber cushion body 1 are formed. A projection 17 corresponding to the shape is formed on the lower die 12 of the molding die 11. The projection 17 is formed of a punching metal.

Also, holes 21 (21a to 21c) having a smaller diameter than the projections 17 formed on the lower mold 12 of the molding die 11 are formed in the fiber blocks 2a to 2c, respectively. Fiber blocks 2a to 2a are formed on protrusions 17 formed on lower mold 12 of molding die 11.
By press-fitting the holes 21 (21a to 21c) of c, the density of the outer peripheral edges of the through holes 1a and 1b formed in the fiber cushion body 1 can be increased.

The holes 21 of the plurality of fiber blocks 2a to 2c
The hot air from the heating means 15 such as a hot air generator is sufficiently introduced into (21a to 21c) through the projections 17 formed of punching metal. In this embodiment, the upper die 1
3 is provided with an air supply pipe 13a, and the lower mold 12 is provided with an exhaust pipe 12a.
Are connected, but the configuration can be reversed.

As shown in FIG. 1, the plurality of fiber blocks 2a to 2c are sequentially inserted into a lower mold 12 of a molding die 11 and clamped by an upper mold 13, and then heated by a heating means such as a hot air generator or a heating oven. At 15, a plurality of fiber blocks 2a to
2c is heated to form a fiber cushion 1 having a desired shape as shown in FIG. After the fiber cushion body 1 is formed, cool air is supplied from the cool air supply means 19 to cool the fiber cushion body 1. Next, the fiber cushion body 1 is formed by taking out from the molding die 11.

[0022]

The method for forming a fiber cushion according to the present invention has been described above. According to the method for forming a fiber cushion according to the first aspect of the present invention, the shape of the through hole formed in the fiber cushion is as follows. Forming a projection corresponding to the mold, forming a hole in the fiber block smaller in diameter than the projection of the mold,
Since the density of the outer peripheral edge of the through hole formed in the fiber cushion body is increased by press-fitting the hole of the fiber block into the protrusion of the mold, the fiber block is securely positioned on the protrusion of the mold. Can be inserted simply and quickly,
There is no danger that a plurality of fiber blocks are restricted by the protrusions and cause a positional shift, the efficiency of the charging operation can be improved, and the shape of the through-hole can be accurately and accurately formed. Durability can be improved by improving the strength of the peripheral edge.

According to the method of forming a fiber cushion of the present invention, a plurality of projections corresponding to the shapes of a plurality of through holes formed in the fiber cushion are formed in a molding die. A plurality of holes having a smaller diameter than a plurality of protrusions of the molding die are formed in the plurality of fiber blocks, and a plurality of through holes formed in the fiber cushion body are formed by pressing the holes of the fiber block into the protrusions of the molding die, respectively. Since the molding is performed with the outer peripheral edge density increased, the fiber blocks can be securely positioned on the plurality of protrusions of the molding die and inserted easily and quickly, and the plurality of fiber blocks are regulated by the plurality of protrusions and are misaligned. It is possible to improve the efficiency of the charging operation, to form the shape of the plurality of through holes accurately and accurately, and to improve the strength of the outer peripheral edge of the plurality of through holes to improve durability. Can be improved That.

According to the method of forming a fiber cushion according to the third aspect of the present invention, the fiber block is made of regular PE.
A plurality of projections corresponding to the shape of the plurality of through holes formed in the fiber cushion body are formed in a molding die, which are composed of a T fiber and a low melting point PET fiber having a lower melting point than the regular PET fiber. The density of the outer peripheral edge of the plurality of through-holes formed in the fiber cushion body is increased by forming holes having a smaller diameter than the protrusions in the plurality of fiber blocks and press-fitting the holes of the fiber blocks into the protrusions of the molding die. Since the molding is performed, the fiber block can be reliably positioned and inserted into the plurality of protrusions of the molding die easily and quickly, and there is no possibility that the plurality of fiber blocks are restricted by the plurality of protrusions and cause a displacement. The efficiency of the charging operation can be improved, and the low melting point PET fiber becomes the binder fiber to make regular PE.
The T-fibers are firmly welded, the shapes of the plurality of through-holes can be accurately and accurately formed, and the strength of the outer peripheral edge of the plurality of through-holes can be improved to improve the durability.

According to the method for forming a fiber cushion body of the present invention, the fiber block is made of regular PE.
A plurality of projections corresponding to the shape of the plurality of through holes formed in the fiber cushion body are formed in a molding die, which are composed of a T fiber and a low melting point PET fiber having a lower melting point than the regular PET fiber. A plurality of holes having a smaller diameter than the plurality of protrusions are respectively formed in the plurality of fiber blocks, and a plurality of holes of the fiber block are press-fitted into the plurality of protrusions of the molding die, respectively. After clamping the mold and supplying hot air to the heat molding die to heat-mold the plurality of fiber blocks to form the fiber cushion body, cool air is supplied to cool the fiber cushion body, and the plurality of fiber cushion bodies are formed. Since the density of the outer peripheral edge of the through hole is increased and molded, the fiber block can be securely positioned on the plurality of protrusions of the molding die and inserted easily and quickly, and the plurality of fiber blocks can be formed by the plurality of protrusions. Regulated There is no danger of displacement and the efficiency of the charging operation can be improved. The low melting point PET fiber becomes the binder fiber and the regular PET fiber is firmly welded. After forming the fiber cushion body, cool air is supplied. Since the fiber cushion body is cooled, the molding cycle can be accelerated, the shape of the plurality of through holes can be accurately and accurately formed, and the strength of the outer peripheral edge of the plurality of through holes is improved. Durability can be improved.

According to the present invention, a plurality of fiber blocks for forming a fiber cushion body can be reliably positioned in a molding die and can be easily and quickly inserted, and there is no possibility that the plurality of fiber blocks will be displaced. The work efficiency can be improved by greatly reducing the input work, the shape of the through hole can be accurately and accurately formed, and the strength of the outer peripheral edge of the through hole can be improved to improve the durability. Thus, it is possible to obtain a method of forming a fiber cushion body which is excellent in economic efficiency.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a method of forming a fiber cushion body according to the present invention, in which a plurality of fiber blocks are set.

FIG. 2 is a cross-sectional view showing a method of forming a fiber cushion body according to the present invention, in which a plurality of fiber blocks are formed.

FIG. 3 is a perspective view of a method of forming a fiber cushion body according to the present invention, showing a hole in a fiber block and a projection of a forming die.

FIG. 4 is a perspective view of a conventional fiber cushion body.

FIG. 5 is a sectional view showing a conventional method for forming a fiber cushion body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fiber cushion body 1a through hole 1b through hole 2 raw fabric 2a fiber block 2b fiber block 2c fiber block 11 molding die 12 lower die 13 upper die 15 heating means 17 protrusion 19 cold air supply means 21 hole 21a hole 21b hole 21c hole

Claims (4)

[Claims] 1. A method of forming a fiber cushion body, comprising: charging a plurality of fiber blocks into a heating mold having a lower mold and an upper mold; and supplying hot air to the heating mold to form a fiber cushion having a desired shape. A protrusion corresponding to the shape of the through hole formed in the fiber cushion body is formed in the molding die, a hole having a smaller diameter than the protrusion of the molding die is formed in the fiber block, and the protrusion of the fiber block is formed in the projection of the molding die. A method for forming a fiber cushion body, characterized by increasing the density of the outer peripheral edge of a through hole formed in a fiber cushion body by press-fitting a hole. 2. A method of forming a fiber cushion body, comprising: charging a plurality of fiber blocks into a heat molding die comprising a lower mold and an upper mold; and supplying hot air to the heat molding mold to form a fiber cushion body having a desired shape. Forming a plurality of protrusions corresponding to the shapes of the plurality of through holes formed in the fiber cushion body in a molding die, and forming a plurality of holes having a smaller diameter than the plurality of projections of the molding die in a plurality of fiber blocks. A method of forming a fiber cushion body, comprising: press-fitting holes of a fiber block into protrusions of a molding die to increase the density of outer peripheral edges of a plurality of through holes formed in the fiber cushion body. 3. A method for forming a fiber cushion body, comprising: charging a plurality of fiber blocks into a heating mold having a lower mold and an upper mold; and supplying hot air to the heating mold to form a fiber cushion having a desired shape. The fiber block is made of a regular PET fiber and a low-melting-point PET fiber having a lower melting point than the regular PET fiber, and a plurality of projections corresponding to a plurality of through-holes formed in the fiber cushion body are formed in a molding die. Forming a hole with a smaller diameter than the protrusion of the mold in a plurality of fiber blocks,
A method for forming a fiber cushion body, comprising: press-fitting holes of a fiber block into protrusions of a forming die to increase the density of outer peripheral edges of a plurality of through holes formed in the fiber cushion body. 4. A method of forming a fiber cushion body in which a plurality of fiber blocks are put into a heating mold having a lower mold and an upper mold and hot air is supplied to the heating mold to form a fiber cushion body having a desired shape. The fiber block is made of a regular PET fiber and a low-melting-point PET fiber having a lower melting point than the regular PET fiber. Forming a plurality of holes of a smaller diameter than the plurality of protrusions of the molding die in the plurality of fiber blocks, respectively, and press-fitting the plurality of holes of the fiber block into the plurality of protrusions of the molding die, respectively, from the lower mold and the upper mold. After clamping the heat forming mold, supplying hot air to the heat forming mold to heat form a plurality of fiber blocks to form a fiber cushion body, and then supplying cool air to cool the fiber cushion body, Method of molding the fiber cushion body, which comprises molding by increasing the density of the outer peripheral edge of the plurality of through holes formed in the Wei cushion body.