JP2002283459A - Method for bonding skin material of seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the taking in and out of a bonding fixture constituted by integrating a setting fixture and a press bonding fixture to ehnance work efficiency and to shorten a heating time and to prevent the falling of the raising of a skin material or the damage of the skin material by a high temperature. SOLUTION: A pad material 3 and the skin material 5 are set to a lower mold 12 having a receiving stand 12a in such a state that a reactive adhesive 7 is applied to the gap between the pad material 3 and the skin material 5. The terminal of the skin material 5 is locked with the lower mold 12 of the bonding fixture 11. The upper mold 13 of the bonding fixture 11 provided with a surface press member 15 formed by attaching a reticulated body 15b to a frame body 15a and a press blade 17 for a pattern is registered with the lower mold 12 and the skin material 5 is pressed by the surface press member 15 and the press blade 17 for the pattern and the reactive adhesive 7 is heated in a heating tank 21 by a heating means and the skin material 5 is bonded to the surface of the pad material 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of bonding a skin material of a vehicle seat. More specifically, the present invention relates to a method of applying a reactive adhesive to a pad material or a skin material and positioning the skin material on the pad material. The present invention relates to a method for bonding a skin material of a vehicle seat, wherein the skin material is bonded to a surface of a pad material by heating and reacting the reactive adhesive by a heating means.

[0002]

2. Description of the Related Art Conventionally, a seat such as a vehicle seat has a pad material and a skin material covering the pad material, and a reactive adhesive is applied to an outer peripheral surface of the pad material or a back surface of the skin material. The pad material is set in a set jig, the pad material is covered with a skin material, steam or the like is sprayed in a heating tank, the reactive adhesive is heated and reacted, and then the skin material is crimped to the pad material by a crimping jig. Then, the pad material and the skin material are bonded to each other, and after cooling, the product is taken out from the set jig.

As shown in FIG. 5, conventionally, a pad material 3 is attached to a pad receiving stand 8b provided on a lower die 8a of a set jig 8, and a reactive adhesive 7 is applied to the pad material 3 to form a pad material 3.
Is covered with a skin material 5, and then the skin material 5 is pressed by a holding blade 8d provided on an upper mold 8c formed in a frame shape, thereby forming the upper mold 8c.
Is set to the lower die 8a, and as shown in FIG. 6, the set jig 8 is slid and inserted into the heating tank 21, and the holding blade 8d of the upper die 8c formed in the frame shape is released. The general surface of the skin material 5 was pressed by the crimping jig 9 as a surface pressing member for pressing the surface shape of the general surface formed by the above.

Further, since a sheet such as a vehicle seat is large in the heating tank 21, the set jig 8 is slid and inserted, or at most two set jigs 8 are attached to the base member 21 a of the heating tank 21. An air outlet 9a for connecting steam or hot air to the crimping jig 9, a steam outlet 9b
The heating is performed by spraying from a large number of blowing holes 9c of the pressing jig 9. As a method of bonding the pad material 3 and the skin material 5 with the reactive hot melt adhesive 7, Japanese Patent No. 2960583 and Patent No. 296058
No. 5, JP-A-10-71283, and the like.

[0005]

However, the conventional method of bonding the skin material has a drawback that the set jig 8 and the crimp jig 9 are required and the manufacturing cost of the jig is increased.
When the set jig 8 is slid and steam or hot air is blown in the heating tank 21, the set jig 8 is moved to the heating tank 2.
It is necessary to put in and take out the first base member 21a, which complicates the operation and has a disadvantage that a large installation area is required for putting in and taking out the set jig 8. When steam or the like is blown in the heating tank 21 to cause the reactive adhesive 7 to react by heating, it takes time for the heating reaction, and the reactive adhesive 7 cannot be heated and reacted simply and in a short time. There has been a risk that the skin material may be raised and the skin material may be damaged by high temperatures. In addition, water droplets due to steam remain on the heated surface of the skin material, and have a disadvantage that a long drying operation is required.

An object of the present invention is to provide a bonding jig by integrating a set jig and a crimping jig, so that it is not necessary to take out and put in the bonding jig, it is possible to improve work efficiency, and to improve the efficiency of the apparatus. The installation area can be reduced, the reaction type adhesive can be heated and reacted, and the heating time for drying can be shortened, and the brushing of the skin material and the damage due to the high temperature of the skin material can be prevented. It is an object of the present invention to provide a method for bonding a skin material of a vehicle seat which is excellent in economic efficiency and can prevent water droplets due to steam from remaining on a heated surface.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a method of bonding a skin material for a vehicle seat according to the first aspect of the present invention is a method for bonding a pad material or a skin material to a reactive material. An adhesive is applied, a skin material is positioned and arranged on the pad material, and the reactive adhesive is heated and reacted by a heating means to bond the skin material to the surface of the pad material. In the method, with the reactive adhesive applied between the pad material and the skin material, the pad material and the skin material are set in a lower mold having a pad receiving base of an adhesive jig, and a mesh-like surface is formed on the frame body. The upper mold of the air-permeable adhesive jig to which the pressing member is attached is matched with the lower mold, the skin material is pressed by a surface pressing member, and the reactive adhesive is heated by a heating means in a heating tank, The skin material is adhered to the surface of the pad material with a reactive adhesive It is characterized in.

According to a second aspect of the present invention, in the method for bonding a skin material of a vehicle seat, a pressing blade for a pattern is formed on an upper mold of the bonding jig, and the skin material is meshed with a pattern of a pad material. It is characterized in that pressing is performed by a pressing member and a pressing blade for a pattern.

According to a third aspect of the present invention, there is provided a method of bonding a skin material of a vehicle seat, comprising: a hinge portion provided on one side of the bonding jig for bringing a lower mold and an upper mold into a mating state; It is characterized in that the lower mold and the upper mold are locked by a latch lock having lock portions provided on both sides for locking the mold by pressing the mold vertically in the vertical direction.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for bonding a skin material of a vehicle seat according to the present invention will be described in detail with reference to the drawings. Figure 1
(A), (b) to FIG. 4 each show an embodiment of a method for bonding a skin material of a vehicle seat according to the present invention,
FIG. 1A is a cross-sectional view illustrating a state in which a reactive adhesive is applied to a pad material, FIG. 1B is a cross-sectional view illustrating a state in which a skin material is set, and FIG. 2 is a cross-sectional view illustrating a bonding jig. FIG. 3 is an exploded perspective view of the bonding jig, and FIG. 4 is a side sectional explanatory view of the heating tank. In this embodiment, a case is described in which the present invention is applied to a seat cushion, a seat back, and the like of a vehicle seat, but the present invention is not limited to a vehicle seat. Further, portions corresponding to the above-described conventional technology are denoted by the same reference numerals and described.

As shown in FIGS. 1 (a) and 1 (b), a vehicle seat 1 such as a seat cushion and a seat back has a pad material 3 and a skin material 5 covering the pad material 3, and the pad material 3 is made of urethane. The skin material 5 is formed of a pad or the like, and has air permeability. First, as shown in FIG.
A reactive adhesive 7 made of a urethane hot melt or the like having a melting point of about 60 ° C. is applied to the surface of the pad, the skin material 5 is positioned and arranged on the pad material 3, and the reactive adhesive 7 is heated by heating means. After the reaction, as shown in FIG.
The surface material 5 is adhered to the surface of. The reactive adhesive 7 may be applied to the back surface of the skin material 5.

As shown in FIG. 2 and FIG.
The pad material 3 and the skin material 5 are set on the lower mold 12 of the bonding jig 11 with the reactive adhesive 7 applied between the and the skin material 5. First, the pad material 3 is mounted on the pad receiving table 12a provided on the lower mold 12. This pad holder 12a is a hinge 1
4 is provided so as to be able to rise, and can be raised to the front side when covering the skin material 5.

The skin material 5 is engaged with the lower gusset tension receiver 12b provided on the lower mold 12 of the bonding jig 11 by a J hook or the like provided at the end of the skin material 5 while covering the pad material 3. You. The pad material 3 and the skin material 5 are positioned by the positioning member 12c of the pad material 3 and the skin material 5 provided on the side of the lower mold 12.
Is positioned.

As shown in FIG. 3, a lower mold 12 of the bonding jig 11 is provided.
The upper die 13 has a plurality of surface pressing members 15 attached to the base frame 13a and a plurality of pattern pressing blades 17 each having a band-shaped tip, and is formed in a frame shape having air permeability. Have been. The surface pressing member 15 is formed by attaching a net 15b such as a wire net to a frame 15a.
a is attached to the base frame 13a via the bracket 13b.

The surface pressing member 15 has a central surface pressing member 15A corresponding to the seat main portion, and a front surface pressing member 15B for pressing the front portion. The central surface pressing member 15A and the front surface pressing member 15B can be integrally formed, and the surface pressing member 15 is provided by dividing the side surface pressing member that presses the side portion and the like. You can also.

When the upper die 13 of the bonding jig 11 is matched with the lower die 12, a latch lock 18 is used. The latch lock 18 is provided on one side where the lower mold 12 and the upper mold 13 are aligned with each other, and on both sides where the lower mold and the upper mold are locked by pressing the upper mold upward and downward in the mold-aligned state. And a lock portion 18b provided. When the lower mold 12 and the upper mold 13 are locked by the latch lock 18, the pattern of the skin material 5 is formed by the surface pressing member 15 and the band-shaped member according to the pattern of the pad material 3 and the skin material 5. Is pressed by the pressing blade 17.

When the upper die 13 is rotated by the hinge portion 18a, it is possible to prevent the upper die 13 from hitting from the hinge portion 18a side.
Since the lock is performed at 8b, product defects can be prevented. Reference numeral 18c denotes a lock release lever of the lock portion 18b. When no pattern is formed on the pad material 3 and the skin material 5, the pressing blade 17 for the pattern is omitted.

As shown in FIG. 3, a plurality of lower dies 12 and upper dies 13 of the bonding jig 11 are mounted on a rotating drum 23 of a heating tank 21. The rotating drum 23 of the heating tank 21 is attached so as to be rotated by a shaft 25,
The four base surfaces 27a, 27b, 27c, 27d are provided, and the four base surfaces 27a, 27b, 27c, 27 are provided.
d, for example, a total of eight bonding jigs 11 each of which is two in parallel.
Is installed.

In the present embodiment, the rotary drum 23 has four
Although the base surfaces 27a, 27b, 27c, and 27d are provided, three or less or five or more base surfaces may be provided. Further, the bonding jigs 11 for the seat cushion and the seat back may be attached to one base surface 27a, respectively, or three or more adhesive jigs 11 may be attached to one base surface 27a.

The rotating drum 23 of the heating tank 21 is rotated by a predetermined rotation angle, and as shown in FIG. 3, the inclination angle of the base surface 27a is about 45 °, and the rotating jig 11 is sequentially attached to the bonding jig 11 from the front side. The pad material 3 and the skin material 5 are attached. A heating hood 31 as heating means is provided above the rotating drum 23 of the heating tank 21, and the heating hood 31 is provided with a steam pipe 33 and a heater 34.

The heating hood 31, the steam pipe 33 and the heater 34 are mounted on an upper wall 32, and the upper wall 3
2 is provided so as to be able to move up and down by a vertically moving mechanism 35. A blower 37 is provided at a lower rear portion of the heating tank 21, and a cooling device 39 is provided at an upper portion on the front side so as to be vertically movable by a vertical lifting mechanism.

Steam and hot air are applied to the pad material 3 and the skin material 5 in a state where the reactive adhesive 7 attached to the bonding jig 11 is applied from the steam outlet and the hot air outlet of the steam pipe 33 and the heater 34. Then, the reactive adhesive 7 reacts by heating. The steam outlet and the hot air outlet are spaced apart from the surface of the skin material 5 by 50 mm to 100 mm to prevent the hair from falling down by the surface pushing member 15.

By rotating the rotary drum 23, the bonding jigs 11 are sequentially arranged so as to face a heating hood 31 as a heating means on the upper part of the heating tank 21, and the pad members 3 attached to the plurality of bonding jigs 11 are arranged. And the skin material 5 are heated from the air-permeable upper mold 13 side, and the reactive adhesive 7 is applied to the pad material 3.
And the skin material 5 are sequentially heated and bonded.

The heating means blows steam from the skin material 5 side provided on the bonding jig 11, and then blows hot air.
In the present embodiment, the heating means is provided on the side of the skin material 5 provided on the bonding jig 11 by the blower 37 or the heater 34.
Preheating is performed by blowing hot air of 00 ° C. for 3 to 5 seconds, then steam of 115 ° C. is blown for 10 to 15 seconds, and then hot air of 200 ° C. for blowing and drying the steam is blown for about 10 seconds. The preheating can be performed by either the blower 37 or the heater 34, or both the blower 37 and the heater 34 can be operated simultaneously. Further, each heating time can be appropriately changed.

Before the steam is blown by the heating means, 3 to 5 hot air is blown from the blower 37 or the heater 34.
By pre-heating by spraying for two seconds, the heating tank 21
Is heated and the temperature of the steam can be prevented from dropping when the steam is sprayed.
The rate of temperature rise can be improved as compared with the conventional method using only steam.

After the steam is blown, hot air is blown for about 10 seconds to prevent the steam from being cooled.
1 has an effect of maintaining the temperature of the pad material 3 and the skin material 5. Further, when only steam is blown, the smoke of the steam deteriorates the working environment, but the steam can be blown off by blowing hot air for about 10 seconds to dry the water droplets.

Therefore, as shown in FIG. 3, the four base surfaces 27a, 27b, 27c, 27d
7b, 27c, and 27d have a tilt angle of about 45 °, and pad materials are sequentially attached to the lower mold 12 of the bonding jig 11 from the front side.
Next, the reactive adhesive 7 is applied, and the skin material 5 is set.
The upper die 13 is sequentially matched so that the surface material 5 is pressed by the surface pressing member 15 of the upper die 13 and the pressing blade 17 for the pattern,
The pad material 3 and the skin material 5 are set on the plurality of bonding jigs 11.

Next, as shown in FIG.
5, the upper wall 32 is lowered, the steam and the hot air are sequentially supplied from the steam pipe 33 and the heater 34, and the air is heated in the order of hot air-steam-hot air from the blower 37 and the heating hood 31 to thereby form the upper mold 13 having air permeability. The reaction-type adhesive 7 can be heated and reacted via the above.

Next, after heating, the blower 37 is stopped,
The supply of steam and hot air from the steam pipe 33 and the heater 34 is stopped, the upper wall 32 is raised by the up-and-down elevating mechanism 35, the cooling device 39 is lowered by the up-and-down elevating mechanism, and the inclination angle of the bonding jig 11 is 45 °. Then, the cooling device 39 is actuated from the front side to cool down and solidify the melted reactive adhesive 7. The cooled product is taken out from the bonding jig 11. This operation is sequentially performed on each base surface 27a, 27b, 27c, 27d.
This is performed for the bonding jig 11 attached to the first jig. Next, by setting the pad material 3 and the skin material 5, the work can be performed successively and sequentially.

[0030]

The method of bonding a skin material of a vehicle seat according to the present invention has been described above. According to the method of bonding a skin material of a vehicle sheet according to the first aspect of the present invention, a pad material and a skin material are provided. The pad material and the skin material are set in a lower mold having a pad receiving base of an adhesive jig in a state where a reactive adhesive is applied between them, and the frame member has a gas-permeable surface pressing member attached to the frame body. The upper mold of the bonding jig is matched with the lower mold, the skin material is pressed by a surface pressing member, the reactive adhesive is heated by a heating means in a heating tank, and the surface of the pad material is heated by the reactive adhesive. Since the skin material is adhered to the surface, the set jig and the crimping jig can be integrated to form an adhesive jig, eliminating the need to insert and remove the adhesive jig, improving work efficiency, and installing equipment. The area can be reduced, the reactive adhesive reacts by heating, and then It is possible to shorten the heating time to 燥, brushed collapse and of the skin material, it is possible to prevent damage due to high temperature of the skin material may be water droplets due to steam can be prevented from remaining on the heating surface.

According to the method for bonding a skin material of a vehicle seat according to a second aspect of the present invention, a pressing blade for a pattern is formed on an upper mold of the bonding jig, and the skin material is adjusted to a pattern of a pad material. Is pressed by a mesh-like surface pressing member and a pattern pressing blade, so that the set jig and the crimping jig can be integrated to form an adhesive jig. Can be improved, the installation area of the device can be reduced, the reactive adhesive can be heated and reacted, and the heating time for drying can be shortened. Damage due to high temperature can be prevented, and a desired pattern can be reliably obtained.

According to the method for bonding a skin material of a vehicle seat according to the third aspect of the present invention, a hinge portion provided on one side of the bonding jig for bringing the lower mold and the upper mold into a mating state is provided. The lower and upper dies are locked by a latch lock having lock portions provided on both sides for locking by pressing the upper and lower dies in the vertical direction in a state where the dies and the upper dies are locked. Can be prevented, and product defects can be prevented.

According to the present invention, the setting jig and the pressure bonding jig can be integrated to form an adhesive jig, and there is no need to insert and remove the adhesive jig. The installation area can be reduced, the reaction type adhesive can be heated and reacted, and the heating time for drying can be shortened, and the brushing of the skin material and the damage due to the high temperature of the skin material can be prevented. Thus, it is possible to obtain a method for bonding a skin material of a vehicle seat, which is excellent in economic efficiency and can prevent water droplets due to steam from remaining on a heated surface.

[Brief description of the drawings]

FIG. 1 shows a method of bonding a skin material of a vehicle seat according to the present invention, wherein (a) is a cross-sectional explanatory view of a state in which a reactive adhesive is applied to a pad material, and (b) is a skin material. Sectional explanatory drawing of the state in which was set.

FIG. 2 is an explanatory cross-sectional view of an adhesive jig showing a method of bonding a skin material of a vehicle seat according to the present invention.

FIG. 3 is an exploded perspective view of a lower mold and an upper mold of a bonding jig showing a method of bonding a skin material of a vehicle seat according to the present invention.

FIG. 4 is an explanatory side sectional view of a heating tank showing a method of bonding a skin material of a vehicle seat according to the present invention.

FIG. 5 is an explanatory sectional view of a conventional set jig.

FIG. 6 is an explanatory sectional view of a conventional heating tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle seat 3 Pad material 5 Skin material 7 Reactive adhesive 11 Adhesive jig 12 Lower mold 12a Pad cradle 12b Lower gusset tension receiver 12c Positioning member 13 Upper mold 13a Base frame 13b Bracket 14 Hinge 15 Surface pressing member 15A surface Pushing member 15B Surface pushing member 15a Frame 15b Mesh 17 Push blade for pattern 18 Latch lock 18a Hinge 18b Lock 18c Unlocking lever 21 Heating tank 23 Rotating drum 25 Shaft 27a Base 27b Base 27b Base 27d Base surface 31 Heating hood 32 Upper wall 33 Steam pipe 34 Heater 35 Vertical elevating mechanism 37 Blower 39 Cooling device

Continued on front page F term (reference) 4F211 AC03 AD05 AG03 AH26 SA01 SC01 SD01 SD12 SH06 SK01 SK06 SN13 SP03 SP25 SW50 TA04 TC06 TD11 TH06 TJ22 TN02 TN24 TN42 TQ04 TW17

Claims (3)

[Claims] 1. A reactive adhesive is applied to a pad material or a skin material, the skin material is positioned and disposed on the pad material, and the reactive adhesive is heated and reacted by a heating means, and the surface of the pad material is heated and reacted. In a method of bonding a skin material of a vehicle seat for bonding a skin material, a pad holder of a bonding jig is attached to the pad material and the skin material in a state where a reactive adhesive is applied between the pad material and the skin material. The upper mold having air permeability is attached to the frame with a mesh-shaped surface pressing member, and the upper die of the air-permeable adhesive jig is aligned with the lower die, and the skin material is pressed by the surface pressing member, and the reaction is performed. A method for bonding a skin material for a vehicle seat, wherein the mold adhesive is heated by a heating means in a heating tank, and the skin material is adhered to the surface of the pad material by the reactive adhesive. 2. A pressing blade for a pattern is formed on an upper die of the bonding jig, and a skin material is pressed by a mesh-shaped surface pressing member and a pressing blade for a pattern in accordance with a pattern of a pad material. The method for bonding a skin material of a vehicle seat according to claim 1. 3. A hinge portion provided on one side of the bonding jig for setting the lower mold and the upper mold in a matching state, and locking the lower mold and the upper mold by pressing the upper mold and the lower mold vertically. 2. A lock state in which a lower mold and an upper mold are mold-locked by a latch lock having lock portions provided on both sides.
A method for bonding a skin material for a vehicle seat according to claim 2.