JP2001315209A - Method and apparatus for bonding skin material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for bonding a skin material which makes a clamping mold sharable and reduces a manufacturing cost and a bonding method which can materialize the simplification of bonding work. SOLUTION: A clamping mold 1 for clamping the skin material 2 covering the surface a member 3 to be bonded is constituted to be freely flexibly deformable corresponding to the surface shape of the member 3 by its own weight and to be able to add clamping force to the skin material 2 by its own weight so that the adhesion of the skin material 2 to a plurality of the members 3 different in shape is made possible, and the mold 1 can be shared to eliminate the necessity of changing a clamping mold for each member 3, reducing the equipment cost of the apparatus and the production cost of a product. By the bonding method using the apparatus, one mold 1 can be applied to the members 3 different in shape so that work efficiency is improved as compared with a case in which a clamping mold is changed for each member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonding apparatus and a bonding method for bonding a skin material to a surface of a member to be bonded.

[0002]

2. Description of the Related Art For example, a seat cushion or a seat back of a vehicle seat is formed by bonding a surface material to a surface of a pad formed in a predetermined shape so as to cover the pad.

[0003] By the way, when the skin material is bonded to the pad, as disclosed in, for example, Japanese Patent Application Laid-Open No. 8-156609, a metal material having a pressing surface corresponding to the surface shape of the surface to be bonded of the pad is used. Using a pressing mold, in a state where the skin material is held on the pressing surface side, the above-mentioned skin material is pressed integrally with the pressing mold against the surface to be bonded of the pad to which the adhesive has been applied in advance. Adhesion has conventionally been common.

In this case, as the adhesive, a heat-meltable adhesive is usually used from the viewpoint of shortening the working time, and the hot-melt adhesive is applied to the surface of the pad to be bonded. It is necessary to restore the adhesive ability by softening and melting the cured adhesive during the bonding work of the skin material, since it is hardened immediately after the surface material is bonded. It is customary to supply a high-temperature fluid such as steam or high-temperature wind.

[0005]

However, in the case of using a metal clamping type as described above, the shape of the pad is not fixed but varies depending on the product specifications. In accordance with the shape of each pad, a plurality of types of pressing dies having different shapes of the pressing surfaces are prepared, and in operation, each time the type of the member 3 to be bonded is different. The work is complicated because it is necessary to replace the pressing mold. In particular, in the case where the skin material is bonded by using a hot-melt adhesive, the design and manufacture of the supply path of the high-temperature fluid are difficult because the pressing mold is made of metal. The production cost of the product itself will be expensive. As a result, the equipment cost of the skin material bonding apparatus including the pressing mold is high, and the production cost of the product obtained by bonding the skin material using the bonding apparatus is high. There was a problem.

Accordingly, the present invention provides an apparatus for bonding a skin material, which is inexpensive in terms of equipment by using a common clamping die and reducing manufacturing costs, and a skin in which manufacturing costs can be reduced by simplifying the bonding operation. The purpose of the present invention is to propose a method of bonding materials.

[0007]

Means for Solving the Problems In the present invention, the following configuration is adopted as specific means for solving such problems.

According to the first invention of the present application, in a skin material bonding apparatus for bonding the skin material 2 to the surface of the member 3 to be bonded, the surface material 2 covered on the surface of the member 3 The pressing mold 1 to be pressed from the front surface 2a can be flexibly deformed by its own weight in accordance with the surface shape of the member to be bonded 3 and applies a predetermined pressing force to the skin material 2 by its own weight. It is characterized by having been configured to obtain.

According to a second aspect of the present invention, in the skin material bonding apparatus according to the first aspect, the pressing mold 1 is attached to the volume portion 13 of the flexible bag-like body 10 by liquid or gel. It is characterized in that it is constituted by a pressing force applying section 11 in which a body is sealed.

[0010] In the third aspect of the present invention, the first or second aspect is provided.
In the apparatus for bonding a skin material according to the invention, a heating portion 12 is provided along one surface 11a in the thickness direction of the pressing force applying portion 11, and the heating portion 12 is formed into a flexible deformable bag. The wall portion 12a on the side of the counter-pressure-clamping-force applying portion 11 is provided with a volume portion 15 provided with a large number of nozzles 16, 16,... The nozzles are configured to blow out from the nozzles 16, 16,.

According to a fourth aspect of the present invention, in the skin material bonding apparatus according to the first aspect, the pressing mold 1 is provided with a flexibly deformable two-piece having an outer volume portion 18 and an inner volume portion 19. A pressurizing force applying unit 11 in which a liquid or gel-like material is sealed in the outer volume 18 of the heavy bag-shaped bag 10 and a pressurizing force applied in the inner volume 19 of the bag 10 are applied. And a heating section 12 which is capable of introducing the high-temperature fluid and discharging the high-temperature fluid to the outside through a large number of nozzles 20 provided through the outer volume 18. And

In the fifth invention of the present application, the first, second, and
The skin material bonding apparatus according to the third or fourth invention is characterized in that the volume portion 13 or the outer volume portion 18 is divided into a plurality in the plane direction of the bag-like body 10.

In the method of bonding a skin material according to a sixth aspect of the present invention, the surface 3 to be bonded of the member 3 to which the adhesive is applied is applied.
After covering the skin material 2 from the back surface 2b side of the cover material 4, the clamping mold 1 having an appropriate self-weight and being freely deformable is placed on the front surface 2a side of the skin material 2; The mold 1 is flexed and deformed by its own weight along the surface shape of the member 3 to be bonded, thereby applying a pressing force to the skin material 2 and bonding the surface material 2 to the surface 34 to be bonded of the member 3 to be bonded. It is characterized by.

According to a seventh aspect of the present invention, in the method for bonding a skin material according to the sixth aspect, when the pressing mold 1 is bent by its own weight along the surface shape of the member 3 to be bonded. It is characterized in that a high-temperature fluid is supplied to the surface 2a side of the skin material 2.

According to an eighth aspect of the present invention, in the method for bonding a skin material according to the sixth aspect, the skin material 2 is bonded to the peripheral edge 2c of the skin material 2 while applying tension. I have.

[0016]

According to the present invention, the following effects can be obtained by adopting such a configuration.

According to the apparatus for bonding a skin material according to the first invention of the present application, in the apparatus for bonding a skin material for bonding the skin material 2 to the surface of the member 3 to be bonded, The pressing mold 1 for pressing the covered skin material 2 from its surface 2a side can be flexibly deformed by its own weight in accordance with the surface shape of the member 3 to be bonded, and the skin material 2 by its own weight. , So that even if there are a plurality of types of the members to be bonded 3 having different surface shapes, each of the members to be bonded 3 of each type Since the pressing mold 1 is bent and deformed in accordance with the surface shape, the skin material 2 can be bonded to each type of the member 3 to be bonded, and the pressing mold 1 can be shared. Conventional bonding using, for example, metal clamping dies Compared to the case where it is necessary to prepare a dedicated clamping mold for each type of member to be bonded as in the device, the equipment cost of the entire bonding device is significantly reduced, and using this bonding device The manufacturing cost of the manufactured product can be reduced.

According to the skin material bonding apparatus according to the second aspect of the present invention, the pressing mold 1 is filled with a liquid or gel-like material in the volume 13 of the flexible bag-like body 10. Since it is constituted by the pressing force applying section 11, the pressing die 1 is compared with a conventional metal pressing die, for example.
The structure described above is simple and its manufacturing cost is low, so that the above-mentioned effects are further promoted.

According to the apparatus for bonding a skin material according to the third invention of the present application, in addition to the effects described above or above,
The following specific effects can be obtained. That is, in the skin material bonding apparatus of the present invention, the heating portion 12 is provided along one surface 11a in the thickness direction of the pressing force applying portion 11, and the heating portion 12 is formed into a flexible deformable bag. And a large number of nozzles 16, 16,
Is provided, and a pressurized high-temperature fluid is introduced into the volume portion 15 and the high-temperature fluid is introduced into the plurality of nozzles 16, 1.
6), so that the design and manufacture of the high-temperature fluid supply path becomes simpler and easier than when a high-temperature fluid supply path is provided in a metal clamping mold, for example. As a result, a bonding apparatus using a hot-melt adhesive can be provided at lower cost.

According to the skin material bonding apparatus of the fourth invention of the present application, the following specific effects can be obtained in addition to the effects described above. That is, in the skin material bonding apparatus according to the present invention, the pressing mold 1 is formed by bending and deforming a double bag-shaped bag 1 having an outer volume 18 and an inner volume 19.
And a high-pressure fluid pressurized into the inner volume 19 of the bag-like body 10 while introducing a pressing force applying unit 11 in which a liquid or gel-like material is sealed in the outer volume 18 of the bag. The high-temperature fluid is constituted by a heating section 12 which can be ejected to the outside through a large number of injection ports 20 provided through the outer volume section 18.

Therefore, the design and manufacture of the high-temperature fluid supply path are simpler and easier than when a high-pressure fluid supply path is provided in a metal clamping mold, for example. The bonding device used can be provided at lower cost.

The high-temperature fluid is supplied to the nozzles 20, 2
0, .., when the nozzles 20, 20,.
When the liquid or gel-like body sealed in the outer volume 18 through which is penetrated is heated and its viscosity is reduced, the bending deformability of the pressing mold 1, in other words, of the member 3 to be bonded The followability of deformation along the surface shape is improved, and the bonding state of the skin material to the surface of the member to be bonded 3 is improved accordingly,
As a result, the commercial value of the product is improved.

According to the skin material bonding apparatus according to the fifth invention of the present application, the following specific effects can be obtained in addition to the effects described above or above. That is, in the skin material bonding apparatus of the present invention, since the volume 13 or the outer volume 18 is divided into a plurality in the plane direction of the bag-like body 10, the volume 13 or the outer volume 18 is divided. The movement of the liquid or gel-like body in the inside is regulated, for example, even when there is a height difference in the surface shape of the member to be bonded 3, the liquid or gel-like body may be unevenly distributed on the lower side. As a result, the self-weight of the pressing mold 1 is properly applied to the entire surface of the member 3 to be bonded, the bonding operation of the skin material is performed under an appropriate pressing force, and a highly reliable skin material is formed. A bonding apparatus particularly suitable for a case where the surface shape of the member to be bonded 3 has a difference in height, such as realization of bonding, can be provided.

According to the method for bonding a skin material according to the sixth invention of the present application, after the skin material 2 is placed on the surface 34 to be bonded of the member 3 to which the adhesive has been applied,
On the surface 2a side of the skin material 2, a pressing mold 1 having an appropriate self-weight and capable of being flexibly deformed is placed, and the pressing mold 1 is made to have a surface shape of the member 3 to be bonded by its own weight. The surface of the surface material 2 is adhered to the surface 34 of the member 3 by applying a pressing force to the surface material 2 and adhered to the surface 34 of the member 3 to be bonded. Since the bonding of the material 2 is realized by the followability to the surface shape of the surface to be bonded 34 due to the bending deformation of the pressing mold 1 and the application of the pressing force by the weight of the pressing mold 1, Even if there are a plurality of types of the members to be bonded 3 having different surface shapes of the surfaces to be bonded 34, the surface material 2 can be bonded using the pressing mold 1 regardless of the difference in the surface shape. Can be formed, for example, as in the conventional bonding method using a metal clamping mold, 3 type is compared to a case where there is a need to replace the clamping type for different, in which can be expected greatly improve the work efficiency.

According to the method of bonding a skin material according to the seventh invention of the present application, the following specific effects can be obtained in addition to the effects described above. That is, in the skin material bonding method of the present invention, when the pressing mold 1 is bent by its own weight along the surface shape of the member 3 to be bonded, a high-temperature fluid is applied to the surface 2a side of the skin material 2. Since it is supplied, it is possible to propose a suitable bonding method particularly when a hot-melt adhesive is used as the adhesive.

According to the method of bonding a skin material according to the eighth invention of the present application, the following specific effects can be obtained in addition to the effects described above. That is, in the method for bonding a skin material according to the present invention, the skin material 2 is
Since it is made to adhere while applying tension to the part,
The skin material 2 is bonded in a state where the wrinkles are extended, and the appearance of the skin material 2 after bonding is improved, and an improvement in commercial value can be expected.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on preferred embodiments.

First Embodiment A FIGS. 1 to 3 show working steps of a skin material bonding apparatus and a skin material bonding method using the bonding apparatus according to a first embodiment of the present invention. ing.

A-1: Bonding Apparatus First, a bonding apparatus for a skin material will be described with reference to FIGS. 1 and 3. The bonding apparatus of this embodiment is particularly applicable to a case where a hot-melt adhesive is used as the adhesive. The bonding apparatus is preferably provided with a pressing mold 1 described below.

As shown in FIG. 1, the pressing mold 1 is provided with a bag-shaped body 10 having two upper and lower volumes 13 and 14 in the thickness direction and having a flexible bag shape. Of these two volumes 13, 14, the volume 13 located on the upper side is
A closed space surrounded by the upper wall portion 10A and the intermediate wall portion 10C of the bag-like body 10 is bent by being filled with a liquid or gel-like body (water W in this embodiment). The pressing force applying section 11 is deformable and has a required own weight. The interior of the volume 13 is filled with the bag 10
Are divided into a plurality of small volume portions in the plane direction of the volume portion 13 by a plurality of partition members 14, 14, ... extending across the upper wall portion 10A and the intermediate wall portion 10C in the vertical direction. ing.

On the other hand, the volume portion 15 is a space surrounded by the intermediate wall portion 10C and the lower wall portion 10B of the bag-like body 10, and one end of the volume portion 15 has steam therein. S
(Corresponding to the “heating fluid” in the claims) is provided, and a side surface of the volume portion 15 on the side of the counter-pressure-clamping force applying portion 11, that is, the bag-shaped body 10. A large number of nozzles 16, 16,... For blowing out the steam S introduced into the volume 15 to the outside on the lower wall 10B.
Is provided, the heating unit 12 is configured to heat and soften the hot-melt adhesive applied to the surface of the surface 34 to be bonded as described later.

The pressing unit 1 thus configured is supported by a suitable moving support means, and the heating unit 1 constituted by its pressing surface, that is, the lower wall 10B of the bag-like body 10 is provided.
2 is used for the bonding operation with the lower surface 12a facing downward.

A-2: Description of Bonding Method Subsequently, a working method in a case where the skin material 2 is bonded in a covered state to the surface to be bonded of the member 3 to be bonded by using the bonding apparatus provided with the above-described pressing mold 1 will be described. An example of the operation of bonding a skin material in the manufacture of a seat cushion for a vehicle seat will be described.

First, the members used in this bonding operation, that is, the structure of the skin material 2, the pad material 3, and the jig 4 will be described.

The pad material 3 (corresponding to the "member to be bonded" in the claims) constitutes the main body of the seat cushion, and is integrally formed of, for example, a foamed resin material. A central portion 31 having a substantially flat surface 31a, and a pair of left and right bank portions 32, 32, which are respectively continuous to the left and right sides of the central portion 31 and extend above the surface 31a of the central portion 31, are provided. At the boundary between the central portion 31 and the bank portions 32, 32, a groove portion 33 extending in the depth direction of the seat surface (a direction perpendicular to the paper surface) is provided. The bank 32 has an inner surface 32a that rises in an arc from the groove 33 toward the top 32c.
And an outer side surface 32b that descends in an arc shape from the top portion 32c. In this embodiment, the upper surface portion of the pad material 3, that is, the surface 31 of the central portion 31
a and the inner side surfaces 32a, 32a of the bank portions 32, 32 located outside the groove portions 33, 33 therebetween, are made to be adhered surfaces 3a, and the skin material 2 is coated so as to cover the adhered surfaces 3a. Is to be glued.

The skin material 2 is made of, for example, a cloth material having a substantially rectangular planar shape. In this embodiment, a breathable cloth material is used as the skin material 2 in particular.
Since the adhesive used is a heat-meltable adhesive, it is necessary to supply the vapor S from the pressing mold 1 to the surface 3a of the pad material 3 through the skin material 2 through the skin material 2. Because there is.

Further, in this embodiment, the following jig 4 is used together with the pad material 3 because it is necessary to adhere the skin material 2 in a state of being pushed into the respective grooves 33 of the pad material 3. The jig 4 has a flat plate shape capable of abutting against the surface 31 a of the central portion 31 of the pad material 3 and has a plurality of injection ports 43, 43,. It is provided with a pair of left and right pushing claws 42, 42 located at the left and right ends, respectively, for pushing a part of the skin material 2 into the groove 33 on the pad material 3 side.

Next, the operation of bonding the skin material 2 to the surface 3a to be bonded of the pad material 3 will be described.

First, as shown in FIG. 1, the pad material 3 is placed on a base 5 disposed below the pressing mold 1 with its lower surface 3b facing downward (ie, the surface to be bonded). 3
a with the a facing upward). Then, the entire area of the surface 3a to be bonded of the pad material 3 and the grooves 33, 33
A hot-melt adhesive is applied by spraying, for example, with a spray gun.

Next, the skin material 2 is put on the surface 3a to be adhered of the pad material 3, and in this state, the center portion of the skin material 2 is moved toward the center portion 31 of the pad material 3 by the jig 4. The skin material 2 is pressed against the surface 31 a of the central portion 31 by the flat plate portion 41 of the jig 4, and the skin material 2 is pressed by the pushing claws 42, 42 into the groove portion 3.
Press into 3,33. As shown in FIG. 2, the skin material 2 is pressed by the jig 4 so as to cover the surface 3a to be bonded of the pad material 3 in a contact state, and the peripheral edge 2c of the pad material 3 is covered with each of the banks. The portions 32, 32 hang down from the tops 32c, 32c, and the positioning of the skin material 2 with respect to the pad material 3 and the prevention of positional displacement are performed.

In this state, for example, suspension of a weight or load of spring force is applied to the peripheral edge 2a of the skin material 3 hanging from the tops 32c, 32c of the bank portions 32, 32 of the pad member 3. A tension is appropriately applied by the tension applying means to remove slack of the skin material 2.

Next, while the jig 4 is being mounted and the skin material 2 is being tensioned, the pressing mold 1 is heated with high-temperature steam S into the volume 15 of the heating section 12 thereof. It is lowered to the pad material 3 side while supplying pressure, and the pressing mold 1 is placed on the skin material 2 from the heating section 12 side, and the supporting action is released.

Then, as shown in FIG.
The pressing force applying portion 11 is bent by its own weight such that a portion near the center in the width direction hangs down, and the heating portion 12 is deformed by the bending deformation of the pressing force applying portion 11.
Is a state in which the internal pressure based on the supply pressure of the steam S introduced into the volume portion 15 and the pressing force of the pressing force applying section 11 due to its own weight are balanced. The bonding surface 3a of the pad material 3 via the skin material 2
Side and adhered in a state conforming to the surface shape of the surface 3a to be bonded, and a predetermined pressing force acts between the skin material 2 and the surface 3a of the pad material 3 to be bonded. Become.
In this case, at a portion corresponding to the jig 4, a predetermined pressing force acts between the skin material 2 and the surface 3 a to be bonded of the pad material 3 via the jig 4.

At this time, the high-temperature steam S injected from the injection ports 16, 16,... Provided in the heating section 12 of the pressing mold 1 passes through the skin material 2 (corresponding to the jig 4). In the part, the surface material 2 is transmitted through the nozzles 43 of the jig 4 through the surface material 2), and the adhered surface 3a of the surface material 2 and the pad material 3
The adhesive comes in contact with the adhesive existing in a hardened state, and is heated and melted to recover the adhesive ability. Therefore, the above-mentioned skin material 2
Is adhered and fixed to the surface 3a to be adhered of the pad material 3 by an adhesive whose adhesive ability has been restored. In this case, the skin material 2
Are adhered in a state where tension is applied (in other words, in a state where slack is removed), wrinkles are not generated on the surface of the skin material 2 after the adhesion, and the appearance is good.

Thereafter, the pressing mold 1 is moved upward to separate it from the pad material 3 and the jig 4
Is removed, the operation of bonding the skin material 2 to the pad material 3 is completed.

Second Embodiment FIGS. 4 and 5 show working steps of a skin material bonding apparatus and a skin material bonding method using the bonding apparatus according to a second embodiment of the present invention. I have.

A-1: Bonding Apparatus First, a bonding apparatus for a skin material will be described with reference to FIGS. 4 and 5. The bonding apparatus of this embodiment is particularly required to recover the bonding ability by heating as an adhesive. The present invention is a bonding apparatus suitable for using a solvent-free adhesive, and includes a pressing mold 1 described below.

As shown in FIG. 4, the pressing mold 1 has a bag-shaped body 10 having a flat volume 13 and a flexible bag shape.
Pressing force applying portion 1 in which water W is sealed in the volume portion 13
1 is provided. The interior of the volume 13 is
A plurality of partition members 14, 14,... Extending vertically between the upper wall portion 10A and the lower wall portion 10B of the bag-like body 10.
Thereby, it is divided into a plurality of small volume portions in the plane direction.

The above-described pressing mold 1 is supported by an appropriate moving support means, and has a pressing surface, that is, the above-described heating section formed by the lower wall portion 10B of the bag-like body 10. 12 is used for the bonding operation with the lower surface 12a facing downward.

A-2: Description of Bonding Method Subsequently, a working method in a case where the skin material 2 is bonded in a covered state to the surface to be bonded of the member 3 to be bonded by using the bonding apparatus provided with the pressing mold 1 will be described. An example of the operation of bonding a skin material in the manufacture of a seat cushion for a vehicle seat will be described.

The members used in this bonding operation, that is, the structure of the skin material 2, the pad material 3 (corresponding to the "member to be bonded" in the claims) and the jig 4 are the same as those of the first embodiment. This is the same as that used in the first embodiment. Therefore, the description of the first embodiment will be omitted by using the corresponding description of the first embodiment.

The operation of bonding the skin material 2 to the surface 3a to be bonded of the pad material 3 will be described. First, as shown in FIG. The pad material 3 is placed with its lower surface 3b facing downward. Then, the bonding surface 3a of the pad material 3
And a solvent-type adhesive is spray-coated on the entire surface of the groove and the inner surfaces of the grooves 33, 33 by, for example, a spray gun.

Next, the skin material 2 is put on the surface 3a to be adhered of the pad material 3, and in this state, the center portion of the skin material 2 is pushed into the center portion 31 side of the pad material 3 by the jig 4. The skin material 2 is abutted against the surface 31a of the central portion 31 by the flat plate portion 41 of the jig 4, and the skin material 2 is pressed by the pushing claws 42, 42 into the groove portions 33, 43.
Push into 33. By pushing the skin material 2 by the jig 4, the skin material 2 covers the bonding surface 3 a of the pad material 3 in a contact state as shown in FIG.
The peripheral edge 2c is the top 32 of each of the banks 32, 32.
c, 32c and hang down from the skin material 2
Is performed with respect to the pad material 3 and the positional deviation is prevented.

In this state, for example, suspension of a weight or a load of spring force is applied to the peripheral edge 2a of the skin material 3 hanging from the tops 32c, 32c of the bank portions 32, 32 of the pad member 3. A tension is appropriately applied by the tension applying means to remove slack of the skin material 2.

Next, while the jig 4 is mounted, the pressing mold 1 is lowered to the pad material 3 side, and the pressing mold 1 is placed on the skin material 2 and its supporting action is performed. Cancel.
Then, as shown in FIG. 5, in the pressing mold 1, the pressing force applying portion 11 bends and deforms by its own weight so that a portion near the center in the width direction hangs down. With the bending deformation of the portion 11, the pressing surface formed by the lower surface 12a is pressed against the surface 3a to be bonded of the pad material 3 via the skin material 2, and the surface shape of the surface 3a to be bonded is formed. Then, a predetermined pressing force acts between the skin material 2 and the surface 3a to be bonded of the pad material 3. Under the pressing force, the skin material 2 is bonded and fixed to the surface 3a to be bonded of the pad material 3. In this case, the skin material 2 remains in a tensioned state (in other words,
Since the bonding is performed (with the slack removed), no wrinkles are formed on the surface of the skin material 2 after bonding, and the appearance is good.

Thereafter, the pressing mold 1 is moved upward to separate from the pad material 3 and the jig 4
Is removed, the operation of bonding the skin material 2 to the pad material 3 is completed.

Third Embodiment FIG. 6 shows a working state of a skin material bonding apparatus and a skin material bonding method using the bonding apparatus according to a third embodiment of the present invention.

A-1: Bonding Apparatus First, the bonding apparatus for the skin material will be described. The bonding apparatus of this embodiment is, similarly to the bonding apparatus of the first embodiment, particularly a hot-melt adhesive as an adhesive. This is a suitable bonding apparatus when an adhesive is used, and includes a pressing mold 1 described below.

The pressing mold 1 includes an upper wall 10A and a lower wall 10B.
A double bag-shaped bag-like body 10 having a volume portion 19 surrounded by an inner upper wall portion 10D and an inner lower wall portion 10E is provided inside a volume portion 18 surrounded by In the meantime, the gel body G is sealed and this is used as the pressing force applying section 11, while
A high-temperature steam S pressurized from the inlet 25 can be introduced into the volume 19, and a large number of nozzles 20, 20,. 12 as a whole, which can be flexibly deformed as a whole and has a required own weight.

The nozzles 20, 20,... Are provided only on the lower surface 12a side of the heating unit 12, which is the pressing surface of the pressing die 1. In addition, the upper wall portion 10A and the inner upper wall portion 10 of the bag-like body 10 are provided inside the volume portion 18 in accordance with the properties of the gel-like body G, particularly, viscosity and fluidity.
D, a plurality of partition members 14, 14, extending in the vertical direction, straddling between the inner lower wall portion 10E and the lower wall portion 10B, respectively.
Is provided, and the volume 13 is divided into a plurality of small volumes in the plane direction by the partition wall material 14 so as to regulate the flow of the gel body G.

The pressing mold 1 thus configured is supported by a suitable moving support means, and the pressing surface thereof, that is, the lower surface 11a of the pressing force applying section 11 is directed downward. Used for bonding work.

A-2: Description of Bonding Method Subsequently, a working method in a case where the skin material 2 is bonded in a covered state to the surface to be bonded of the member to be bonded 3 using the bonding apparatus having the above-described pressing mold 1 will be described. An example of the operation of bonding a skin material in the manufacture of a seat cushion for a vehicle seat will be described.

The members used in this bonding operation, that is, the structure of the skin member 2 and the pad member 3 (corresponding to the “member to be bonded” in the claims) and the jig 4 are the same as those of the first embodiment. This is the same as that used in the first embodiment. Therefore, the description of the first embodiment will be omitted by using the corresponding description of the first embodiment.

Next, the operation of bonding the skin material 2 to the surface 3a to be bonded of the pad material 3 will be described.

First, the pad material 3 is placed on the base 5 arranged below the pressing mold 1 with its lower surface 3b facing downward. Then, a hot-melt adhesive is applied by spraying, for example, with a spray gun to the entire area of the surface 3a to be bonded of the pad material 3 and the inner surfaces of the grooves 33, 33.

Next, the surface material 2 is put on the surface 3a to be adhered of the pad material 3, and in this state, the center portion of the surface material 2 is pushed into the center portion 31 side of the pad material 3 by the jig 4. The skin material 2 is abutted against the surface 31a of the central portion 31 by the flat plate portion 41 of the jig 4, and the skin material 2 is pressed by the pushing claws 42, 42 into the groove portions 33, 43.
Push into 33. By pushing the skin material 2 by the jig 4, the skin material 2 covers the bonding surface 3 a of the pad material 3 in a contact state as shown in FIG. , 32 at the top 32
c and 32c are hung down. In this state, the positioning of the skin material 2 with respect to the pad material 3 and the prevention of displacement are performed.

In this state, for example, suspension of a weight or load of spring force is applied to the peripheral edge 2a of the skin material 3 hanging from the tops 32c, 32c of the bank portions 32, 32 of the pad member 3. A tension is appropriately applied by the tension applying means to remove slack of the skin material 2.

Next, with the jig 4 mounted, the pressing mold 1 is lowered toward the pad material 3 while supplying high-temperature steam S into the volume 19 of the heating section 12 under pressure. Then, the pressing mold 1 is placed on the skin material 2 from the lower surface 11a side of the pressing force applying section 11, and the supporting action is released.

Then, in the pressing mold 1, the pressing force applying section 11 maintains the volume of the volume section 19 properly by the pressure of the steam S introduced into the volume section 19 of the heating section 12. Due to its own weight, the central portion in the width direction is bent and deformed so as to hang down (in a state shown by a dashed line in FIG. 6). The lower surface 11a of the portion 11 is pressed against the surface 3a to be bonded of the pad material 3 via the skin material 2 and is closely adhered along the surface shape of the surface 3a to be bonded. A predetermined pressing force acts between the material 3 and the surface 3a to be bonded. In this case, the jig 4
A predetermined pressing force acts between the skin material 2 and the surface 3a to be bonded of the pad material 3 via the jig 4 at the portion corresponding to the above.

At this time, high-temperature steam S injected from the injection ports 20, 20,... Provided in the heating section 12 of the pressing mold 1 passes through the skin material 2 (corresponding to the jig 4). In the part, the surface material 2 is transmitted through the nozzles 43 of the jig 4 through the surface material 2), and the adhered surface 3a of the surface material 2 and the pad material 3
The adhesive comes in contact with the adhesive existing in a hardened state, and is heated and melted to recover the adhesive ability. Therefore, the above-mentioned skin material 2
Is adhered and fixed to the surface 3a to be adhered of the pad material 3 by an adhesive whose adhesive ability has been restored. In this case, the skin material 2
Are adhered in a state where tension is applied (in other words, in a state where slack is removed), wrinkles are not generated on the surface of the skin material 2 after the adhesion, and the appearance is good.

Thereafter, the pressing mold 1 is moved upward to separate it from the pad material 3 and the jig 4
Is removed, the operation of bonding the skin material 2 to the pad material 3 is completed.

[0072] In other above-described embodiments, the bank portion 32 in which the pad member 3 is located on both sides of the central portion 31 and the central portion 31,
32, and the grooves 33, 33 are provided therein, respectively, so that the movement of the skin material 2 when the pressing force is applied and the movement of the skin material 2 to the groove 33 are increased.
The jig 4 was used to ensure the pressing of the pad material 3.
The use of the jig 4 is unnecessary when the height difference between the bank portions 32, 32 located on both sides of the cover member 2 is small and the skin material 2 does not move when the pressing force is applied.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first step in a method of bonding a skin material using a bonding device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a second step in the method of bonding a skin material using the bonding device according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a third step in a method of bonding a skin material using the bonding device according to the first embodiment of the present invention.

FIG. 4 is an explanatory view of a first step in a method of bonding a skin material using a bonding apparatus according to a second embodiment of the present invention.

FIG. 5 is an explanatory view of a second step in a method of bonding a skin material using a bonding apparatus according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram of a method of bonding a skin material using a bonding device according to a third embodiment of the present invention.

[Explanation of symbols]

1 is a pressing mold, 2 is a skin material, 3 is a pad material (member to be bonded), 4 is a jig, 5 is a base, 10 is a bag-like body, 11 is a pressing force applying section, 12 is a heating section, 13 Is a volume portion, 14 is a partition wall material, 15 is a volume portion, 16 is a nozzle, 17 is an introduction portion, 18 and 19 are volume portions, 20 is a nozzle, 23 is an inlet, 24 is an outlet, 25 is an inlet, and 31 is an inlet. Is the center, 32 is the bank, 3
3 is a groove, 41 is a flat plate, 42 is a pushing claw, 43 is a nozzle, G is a gel, S is steam, and W is water.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F211 AC03 AD08 AD17 AG03 AG20 AK01 AM01 AM32 TA03 TC06 TD11 TH01 TH06 TJ30 TN24 TQ01 TQ10

Claims (8)

[Claims] 1. A skin material (2) on a surface of a member (3) to be bonded.
A skin material bonding apparatus for bonding the surface material (2) covered on the surface of the member to be bonded (3) from a surface (2a) side thereof.
The pressing mold (1) is capable of flexibly deforming by its own weight in accordance with the surface shape of the member (3) to be bonded, and is given a predetermined pressing force to the skin material (2) by its own weight. An apparatus for bonding a skin material, which is configured to apply a force. 2. The clamping force according to claim 1, wherein the clamping die (1) is formed by enclosing a liquid or gel-like material in a volume (13) of a flexible bag-like body (10). An apparatus for bonding a skin material, comprising an application section (11). 3. The one surface (11) in the thickness direction of the pressing force applying part (11) according to claim 1 or 2,
A heating section (12) is provided along a), and the heating section (12) has a bag-like shape that can be flexibly deformed and has a large number of walls (12a) on the side of the counter-compression-force applying section (11). Spout (1
6), (16),... Are provided, and a pressurized high-temperature fluid is introduced into the volume (15), and the high-temperature fluid is introduced into the plurality of nozzles (16), (16). An apparatus for bonding a skin material, wherein the apparatus is configured to blow out from the skin material. 4. The bag-like body (1) according to claim 1, wherein said pressing mold (1) has an outer volume part (18) and an inner volume part (19).
0) a pressing force applying portion (11) in which a liquid or gel-like material is sealed in the outer volume portion (18), and the bag-like material (1).
0) into the inner volume (19) and pressurized hot fluid into the outer volume (1).
8) A large number of nozzles (20), (20),
A heating unit (12) that can be ejected to the outside via a through-hole; 5. The bag according to claim 2, 3 or 4, wherein the volume (13) or the outer volume (18) is divided into a plurality in the plane direction of the bag-like body (10). Skin material bonding device. 6. A surface material (2) is placed on the surface (34) of the member (3) to which the adhesive is applied from the back surface (2b) side, and then the surface of the surface material (2). On the (2a) side, a press-clamping die (1) having an appropriate self-weight and being flexibly deformable.
Is placed, and the pressing die (1) is bent by its own weight along the surface shape of the member (3) to be bonded, thereby applying a pressing force to the skin material (2) and A method for bonding a skin material, comprising bonding to a surface to be bonded (34) of the member to be bonded (3). 7. The surface (2a) of the skin material (2) according to claim 6, wherein when the pressing mold (1) is bent and deformed by its own weight along the surface shape of the member (3) to be bonded. A) supplying a high-temperature fluid to the side of the skin material; 8. The method for bonding a skin material according to claim 6, wherein the skin material (2) is bonded to a peripheral edge (2c) of the skin material (2) while applying tension.