JP3236496B2 - Method for producing sheet using adhesive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a sheet using an adhesive, and more particularly to a sheet provided with a pattern on a seating surface, the sheet using an adhesive having a good bond between a skin and a cushion pad. And a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, there has been known a technique for joining a skin and a cushion pad using an adhesive. For example,
A seat body skin consisting of a body part and a gusset part, a plate of an appropriate material temporarily bonded to a joint part of the body part and the gusset part, after bonding a molded skin by a molding die to a cushion material formed in a seat shape. A technique for removing the plate (see Japanese Patent Publication No. 4-36716) is known.

Further, a body part is formed by joining a plurality of skins having different physical properties, and the joined body part is formed on a molding die conforming to the shape of the body part of a completed seat having a bucket part or the like. In the method of manufacturing a molded sheet that adheres the shaped skin thus formed to a cushion conforming to the outer shape of the completed seat, a projection is formed on the molding die at a position corresponding to the joint portion of the body portion. Provided,
There is known a technique (Japanese Patent Publication No. 5-37668) in which the joint portion is fixed by these projections and shaping is performed while preventing the movement thereof.

[0004]

According to the above prior art,
In order to form a slit in the crimping mold and temporarily connect the plate and the skin, or to form a projection on the mold and fix the skin with the projection, it is only necessary to manufacture the mold for each different pattern shape However, it took time and effort to position the epidermis, and there was a problem in work efficiency.

[0005] In particular, when the pattern shape is not a straight line but a complicated curved shape, there is an inconvenience that it takes a lot of trouble to arrange the skin on the slits or projections of the mold as well as the manufacturing cost of the mold. .

Further, in the prior art in which a skin is attached to a mold and adhered to a cushion pad, it is difficult to attach the skin itself to the mold when the skin is a bag like a seat back. For this purpose, for example, a detachable means such as a fastener is required, so that not only the advantages of the bag-like skin cannot be enjoyed, but also the cost of the skin increases, and the degree of freedom in the design of the skin may be impaired.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a sheet using a good-looking adhesive by accurately aligning a sewn portion of a different skin material and a cushion pad in a sheet having a pattern. .

Another object of the present invention is to provide a sheet in which the pattern of the sheet is not a straight line but a curve.
An object of the present invention is to provide a method for manufacturing a sheet using an adhesive suitable for performing alignment in bonding between a skin and a cushion pad.

Still another object of the present invention is to provide a method for manufacturing a sheet using a good-looking adhesive by accurately aligning a sewn portion of a skin and a cushion pad even with a bag-shaped skin. Is to do.

Another object of the present invention is to provide a method for manufacturing a sheet using an adhesive which can be applied to a change in sheet shape or pattern shape without changing a crimping die.

[0011]

According to the present invention, there is provided a method of manufacturing a sheet using an adhesive, comprising: a cushion pad having a pattern groove formed on an upper surface side; and a sewn skin in which a plurality of skin materials are sewn at a sewn portion. A method for manufacturing a sheet in which the sewn portion of the skin is positioned in the pattern groove of the cushion pad and bonded with an adhesive, wherein a step of applying an adhesive to at least one of the bonding surfaces of the cushion pad and the skin; A step of placing a skin on a cushion pad, a step of arranging a jig made of a thin plate having the same shape as a sheet from the cushion pad on which the skin is placed, and positioning the skin, It is characterized in that the pad is covered by a crimping die while the surface of the pad is covered with the jig and the jig is arranged.

An edge plate is formed on the thin plate of the jig so as to correspond to the pattern groove, and a plurality of pins are formed at predetermined ends at free ends of the edge plate. To the pattern groove side of the cushion pad to position the seam of the pattern groove of the cushion pad and the skin. Further, the thin plate member may be configured such that a large number of holes are formed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sheet S using an adhesive according to the present invention has a pattern P on an upper surface side mounted on a frame F.
Pad 10 in which a groove for use is formed, a skin H in which a plurality of skin materials 20 (a front portion of a seat surface, a rear portion, a side portion, a bank portion, and the like) are sewn by a stitching portion 30; The stitched portion 30 of the skin H is positioned in the groove 11 of the pattern P of No. 10 and bonded by an adhesive.

The method of manufacturing the sheet S using the adhesive includes a step of applying an adhesive, a step of coating the skin H, a step of positioning the skin H and the cushion pad 10 by the jig 40, and a step of pressing. Is the main process.

First, in the step of applying the adhesive, the frame F
The cushion pad 10 is placed on the upper side, and an adhesive is applied to a joint surface between the cushion pad 10 and the skin H.

Next, a step of coating the skin H is performed. This covering step covers the skin H on the cushion pad 10 to which the adhesive has been applied. At this time, the stitched portion 30 of the skin H is inserted into the groove 11 of the pattern P of the cushion pad 10.
Is coated.

Further, a step of positioning the skin H and the cushion pad 10 by the jig 40 is performed. That is, the jig 40 made of a thin plate having the same shape as the seat is arranged from above the cushion pad 10 covered with the skin H, and
Positioning is performed.

An edge plate 41 is formed on the thin plate of the jig 40 so as to match the groove 11 of the pattern P, and pins 12 are formed at free ends of the edge plate 41 at predetermined intervals. Therefore, the pin 12 formed on the edge plate 41 of the jig 40 is pushed into the groove 11 side of the pattern P of the cushion pad 10 from the stitched portion 30 of the skin H while visually piercing the cushion pad 10, and the pattern of the cushion pad 10 is pierced. The positioning of the groove 11 of P and the stitched portion 30 of the skin H can be performed.

Then, a pressing step is performed. The skin H is put on the cushion pad 10 by the crimping die 50, and the cushion pad 10 is crimped by the crimping die 50 while the jig 40 is arranged.

According to the present invention constructed as described above, the pattern P is positioned by the jig 40 while visually confirming the appearance of the final product from the front side of the skin H. 30 and the cushion pad 10 can be precisely positioned, and not only can a good-looking sheet be manufactured, but also the defective rate in manufacturing can be reduced.

Further, even in the case where the pattern P of the sheet S is not a straight line but a curved line, it is possible to suitably perform the alignment between the skin H and the cushion pad 10 so that the skin H is like a seat back. The cushion pad 10 and the epidermis H can be bonded as they are even when they are in a bag shape.

[0022]

An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

FIGS. 1 to 6 show an embodiment of the method of the present invention. FIG. 1 is a perspective view of a jig, and FIG. 2 is an enlarged sectional view of a main part for explaining a state in which a skin and a cushion pad are crimped. 3 to 6 are explanatory views showing the manufacturing steps.

In this embodiment, the sheet S using the adhesive is
The seating portion C of the seat will be described as an example. The seat S is formed by placing a cushion pad 10 on a frame F and covering the cushion pad 10 with a skin H.
The cushion pad 10 has a pattern P on the upper surface side.
Grooves 11 are formed. Further, the skin H is formed by sewing a plurality of skin materials 20 at a stitching portion 30, and the stitching portion 30 is sewn with the plurality of skin materials 20 according to the shape of the groove 11 of the pattern P.

That is, in the skin H of this embodiment, a plurality of different skin materials 20 such as cloths and skins are sewn at the seam 30. As the plurality of skin materials 20, the seating portion C, the side portion 23, and the bank portion 2 are configured so as to form the shape of the seating portion C of the seat S.
4 and so on. In the present embodiment, when the cushion pad 10 and the skin H are bonded, the stitched portion 30 of the seating portion C is positioned in the groove 11 of the pattern P and is bonded with an adhesive.

The method of manufacturing the sheet S using the adhesive of the present embodiment includes a step of applying the adhesive, a step of coating the skin H,
The main steps are a step of positioning the outer skin H and the cushion pad 10 according to 0, and a step of crimping. Then, the cushion pad 10 is placed on the frame F in advance, and an adhesive is applied to the cushion pad 10.

In the application step of the adhesive of this embodiment, as shown in FIG. 3, the robot R applies the adhesive to the surface of the cushion pad 10, which is the upper surface of the cushion pad 10. Of course, it is also possible to apply manually by using a spray. In the present embodiment, the adhesive is applied to the cushion pad 10. However, the adhesive may be applied to the joint surface on the skin H side to be joined to the cushion pad 10. As the adhesive used in this example, various types of conventionally known adhesives can be used. As an adhesive,
When a hot-melt type is used, a crimping type described later is a type capable of heating (including steam heating) and pressurizing.

Next, the step of coating the skin H will be described . As shown in FIG. 4, the skin pad H covers the cushion pad 10 to which the adhesive is applied. In this example, the terminal portion 25 of the side portion 23 of the skin H is fixed to the frame F. Accordingly, as shown in FIG. 4, the seating portion C does not follow the surface shape of the cushion pad 10, and the skin H rises up from the seating portion C. At this time, the skin H is put on the cushion pad 10 so that the stitched portion 30 is located in the groove 11 of the pattern P of the cushion pad 10.

Further, a step of positioning the skin H and the cushion pad 10 by the jig 40 is performed. That is, a jig 40 made of a thin plate having the same shape as the sheet shape is used from above the cushion pad 10 covered with the skin H, and the jig 40 is arranged to position the skin H.

The jig 40 of this embodiment is formed of a thin plate, and has the same shape as the shape of the seating portion C as shown in FIG. A plate 41 is formed. In this example, the free end side of the edge plate 41, that is, the side in contact with the skin H has a tapered shape, and a plurality of pins 12 are formed at predetermined intervals.

When a hot-melt type adhesive is used as the adhesive, a number of holes are formed in the jig 40 as shown in the upper corner of FIG. It is formed so as to be well added to the adhesive located between the skin and the cushion pad.

Then, the pins 12 formed on the edge plate 41 of the jig 40 are pressed into the grooves 11 of the pattern P of the cushion pad 10 from the seam 30 of the skin H while being visually observed, and pierced into the cushion pad 10. Stitches 3 of groove 11 of pattern P and skin H of 10
Positioning of 0 is performed. Since the pins 12 pierce the seam H from the seam 30 to the cushion pad 10, the pins 12 do not damage the skin members 20.

When the skin H and the cushion pad 10 are adhered to each other by the crimping die 50 as described above, the positioning may be performed while visually confirming the appearance of the final product from the front side of the skin H before the crimping. can, appearance product obtained good, it is possible to reduce the defect rate.

Next, a pressure bonding step is performed. Fig. 6
As shown in FIG. 3, two opposite molds are used, and a convex crimping mold 50 adapted to the shape of the seating portion of the seat S and a mounting mold 60 supporting the frame F and the cushion pad 10 are used. Move one of the molds to move the cushion pad 10
And pressing the skin H.

The mounting die 60 of this embodiment is provided with a supporting projection 61 for directly supporting the frame F. Further, the crimping die 50 of the present example is formed on the convex portion 51 in conformity with the surface shape of the sheet S (the shape of the seating portion C in this example). In this example, the crimping die 50 is formed according to the surface shape of the sheet S. However, since the jig 40 is formed according to the product shape of the sheet S, it is not necessary to perfectly match the sheet shape. Even when the groove 11 of the pattern P is changed or the sheet shape is changed to some extent, the jig 40 can be press-bonded by forming the jig 40 into a sheet shape, and a crimping type that can adapt to various sheet shapes can be obtained.

When a hot-melt adhesive is used as the adhesive, the pressure-bonding type is provided with a known means such as heating by a heater or heating by steam.

Then, the skin H and the cushion pad 10 are adhered by the adhesive. In this example, the seam 30 and the product surface shape are fixed. At this time, the groove 11 of the pattern P is deepened by the edge plate 41. Since the seam S can be joined to the position in a state where the seam 30 enters, the seam S with good appearance can be manufactured by accurately positioning the seam H and the cushion pad 10.

[0038]

As described above, according to the present invention, since the jig is used for positioning while visually confirming the appearance of the final product from the front side of the skin, the seam portion of the skin material and the cushion pad are accurately aligned. Not only can a sheet with good appearance be manufactured by alignment, but also the defective rate in manufacturing can be reduced.

Further, even in the case where the pattern of the sheet is not a straight line but a curved line, it is possible to suitably perform the alignment between the skin and the cushion pad.
Even when the skin is in a bag shape like a seat back, the cushion pad and the skin can be directly bonded.

Further, according to the jig used in the manufacturing method of the present invention, since the jig is formed according to the product shape of the sheet, it is not necessary to adjust the crimping die to the sheet shape.
Even if the pattern groove is changed or the shape of the sheet changes to some extent, by making the jig into a sheet shape, a reliable adhesion between the skin and the cushion pad is possible. Can be used.

[Brief description of the drawings]

FIG. 1 is a perspective view of a jig used in the method of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part, illustrating a state in which a skin material and a cushion pad are crimped.

FIG. 3 is an explanatory view showing a manufacturing process.

FIG. 4 is an explanatory view showing a manufacturing process.

FIG. 5 is an explanatory view showing a manufacturing process.

FIG. 6 is an explanatory view showing a manufacturing process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cushion pad 11 Groove 20 Skin material 30 Seam joint 40 Jig 41 Edge plate 50 Crimping type 60 Placing type F frame H skin P pattern S sheet

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-76666 (JP, A) JP-A-4-348715 (JP, A) JP-A-4-44843 (JP, A) JP-A-5-44863 38388 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B68G 7/05 B29C 65/48 B29K 105: 04 B29L 31:58

Claims (3)

(57) [Claims] 1. A cushion pad in which a pattern groove is formed on an upper surface side, a sewn skin in which a plurality of skin materials are sewn at a sewn portion, and an adhesive in which the sewn portion of the skin is positioned in the pattern groove of the cushion pad. A step of applying an adhesive to at least one of the joining surfaces of the cushion pad and the skin, a step of covering the skin on the cushion pad, and a step of applying the adhesive on the cushion pad. A step of arranging a jig made of a thin plate having the same shape as the sheet shape to position the skin, and crimping with a crimping mold while the jig is placed with the skin covered on the cushion pad. A method for producing a sheet using a characteristic adhesive. 2. A thin plate of the jig is formed with an edge plate corresponding to the pattern groove, and a plurality of pins are formed at a free end of the edge plate at a predetermined interval, and the pins are connected to the seam of the skin. 2. The method of manufacturing a sheet using an adhesive according to claim 1, wherein the sheet is pressed into the pattern groove side of the cushion pad to position the seam between the pattern groove of the cushion pad and the skin. 3. The method for manufacturing a sheet using an adhesive according to claim 2, wherein a plurality of holes are formed in the thin plate member.