JPS62257832A - Molding method of adhesive sheet between skin material utilizing dummy cover and pad material - Google Patents

Abstract

PURPOSE:To so constitute the title method that registration of a skin material with pad material is performed easily and creases are not generated on the skin material, by a method wherein after the pad material has been fitted in the skin material arranged after the inside of an adhesive molding tool, air in an adhesive molding space is sucked by covering the adhesive molding tool with a sealing dummy cover member. CONSTITUTION:A skin material 14 is arranged appropriately within a molding space 2 of an adhesive molding tool 1 so that the surface of the skin material 14 follows after the inside of the molding space 2, an overhand piece 15 is connected with a connecting tape 9 and an adhesive agent 17 is applied to an adhesive surface of either of the skin material 14 and a pad material 16. Then the pad material 16 is fitted in the same skin material 14 so that the pad material 16 is loaded in consideration of directional properties. In succession to the above,the skin material 14 and pad material 16 are sealed into a space 2 by covering the top of a mold 1 with a sealing dummy cover member 10 and air in the space 2 is sucked through a vacuum pump 4. Then simultaneously with adhesion of the skin material 14 to the bottom of the space 2 the pad material 16 is stuck closely to the same skin material 14 through permeability of the skin material 14, and the skin material 14 and pad material 16 are stuck to each other through the adhesive agent 17.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method of forming an adhesive sheet such as an automobile seat sheet in which a skin material and a pad material are bonded via an adhesive. . Note that the hermetic dummy cover member referred to here is one component in the equipment, and the skin material is the skin material of the adhesive sheet. In addition, the adhesive sheet referred to in this invention refers to the seat cushion and the adhesive sheet.
・Means one or both of the backs.

(Prior Art) Conventionally, bonding between a skin material and a pad material in an adhesive sheet has been carried out using a press machine, as shown in FIG. Adhesive mold 21 corresponding to the lower mold of this brace [20]
has a molding space 22 corresponding to the outer surface of the seat. Then, in the molding space 22 of the adhesive molding mold 21, a skin material 24, which has been molded in advance into a predetermined shape, is blued along the inner surface of the molding space 22, and an elevating body corresponding to an upper mold above the adhesive molding mold 21 is provided. 23, the pad material 25 was bonded to the inside of the skin material 24 under pressure.

Note that an adhesive 26 is appropriately applied between the pad material 25 and the skin material 24. Further, in the figure, reference numeral 27 is a frame for holding down the skin material 24.

(Problems to be Solved by the Invention) However, in the method of forming an adhesive sheet using the conventional press machine described above, the adhesive mold 21 and the skin material 24, and the elevating body 23 and the pad material 25 remain in a misaligned state. When adhesively bonded under pressure, a uniform pressure is not applied to the bonding surface between the skin material 24 and the pad material 25, which causes wrinkles in the skin material 24, reducing the commercial value of the adhesive sheet.

Therefore, the skin material 24 must be placed on the adhesive mold 21 and the pad material 25 must be placed on the elevating body 23 in a precisely positioned state, which requires time-consuming and complicated work and reduces productivity. There was a problem that it was low and the cost was high.

This is particularly noticeable in adhesive sheets in which a Surin 1-Kasa concave pattern is formed on the surface of the sheet.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for forming an adhesive sheet of a skin material and a pad material by using a dummy cover, which can solve the problems in the conventional techniques described above.

(Means for Solving the Problems) In order to solve the problems of the above-mentioned conventional technology, the present invention provides an adhesive molding mold having a molding space corresponding to the outer surface of the seat. An intake port of an air intake source is communicated with the molding space, and a skin material previously molded into a predetermined shape is placed on the adhesive mold along the inner surface of the molding space,
After fitting the pad material to the skin material via adhesive, the adhesive mold is tightly covered with a dummy cover member to seal the skin material and pad material in the molding space. The gist of the structure is to bring the pad material into close contact with the skin material by suctioning air by the suction action of the suction source.

(Function) According to the above-mentioned means, by laying the skin material in the molding space of the adhesive mold and inserting the pad material into the skin material, the positions of the skin material and the pad material can be aligned, and the surface material When the air intake source is operated with the material and pad material covered by one closing dummy cover member, the suction action of the air intake source creates a negative pressure inside the sealing dummy cover member, and the pressure due to atmospheric pressure is reduced. It acts on the pad and the skin material through the sealing dummy cover member, and the skin material is brought into close contact with the inner surface of the molding space, and with the pad material being in close contact with the skin material, the skin material and the pad material are Adhesion is accomplished.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

First, the equipment for bonding the skin material and pad material in the adhesive sheet will be explained according to FIG. 2 J5 and FIG. 3. The adhesive mold 1 defines a molding space 2 corresponding to the outer surface of the seat. An intake passage 3 is formed in the adhesive mold 1 . One end of the intake passage 3 is connected to an intake port 5 of a vacuum pump 4, which is an intake source, via a flow control valve 6, and the other end is branched into a plurality of ventilation holes 7 on the bottom surface of the molding space 2. and the intake port 5 of the vacuum pump 4
is communicated with the molding space 2.

Note that the vacuum pump 4 serving as the suction source is installed on a base 8 attached to the side surface of the adhesive mold 1.

A locking tape 9 made of an adhesive tape having an adhesive surface on its surface or a hook-side fastener of a hook-and-loop fastener is attached to the upper end surface of the adhesive mold 1.

Note that the locking tape 9 is attached to the overhanging piece 1 of the skin material 14, which will be described later.
It is attached or anchored to the surface of 5.

Further, a closed dummy cover member 10 that covers the molding space 2 of the adhesive mold 1 is composed of a closed dummy cover 11 and a presser frame 12. The airtight dummy cover 11 is formed into a rectangular shape from a stretchable non-breathable rubber material, and has a presser frame 12 in the shape of a rectangular frame corresponding to the upper surface of the adhesive mold 1 on the upper surface of its outer periphery. is fixed.

An elastic sealing material 13 is fixed to the entire circumference of the lower surface of the outer periphery of the airtight dummy cover 11. This elastic sealing material 13 can be pressed tightly against a projecting piece 15 of a skin material 14, which will be described later.

In addition, the skin material 14 is made of a suitable cloth, such as a fabric-based woven fabric, or a sheet material, etc., in which a fused skin material such as vinyl chloride resin is suitably applied to the surface of the cloth, and has a predetermined shape. It is molded into. Therefore, at least the portion of the skin material 14 facing the bottom surface of the molding space 2 of the mold 1 has air permeability through the weave or seams.

At the outer end of the skin material 14, overhanging pieces 15 are formed that overhang in all directions. Note that the overhang piece 15 is appropriately cut and removed after the skin material 14 and the pad material 16 are bonded together.

Further, the pad material 16 is formed by foaming into a predetermined shape from a foamable cushioning material such as urethane foam.

Next, a method of bonding the skin material 14 and pad material 16 using the above bonding equipment will be described in detail.

A skin material 14 is suitably arranged in the molding space 2 of the adhesive mold 1 so that its surface follows the inner surface of the molding space 2. Then, each projecting piece 15 of the skin material 14 is attached or locked to each locking tape 9 on the adhesive mold 1 to hold the skin material 14 in position on the adhesive mold 1.

Next, an adhesive 17 is applied to the adhesive surface of either the skin material 14 or the pad material 16. Note that when the adhesive 17 is, for example, a rubber adhesive, the adhesive 17 may be applied to the adhesive surfaces of both the pad material 16 and the skin material 14.

Thereafter, the pad material 16 is fitted onto the skin material 14 with consideration given to the directionality. Therefore, the pad material 16
are quickly aligned with the skin material 14 by the operator's hands.

Next, the sealing dummy cover member 1 is placed on the top surface of the adhesive mold 1.
0 to seal the skin material 14 and pad material 16 in the molding space 2. In addition, each overhanging piece 1 of the skin material 14
5, each elastic sealing material 13 of the sealing dummy cover member 10 is pressed onto the upper surface thereof as shown in FIG. Further, the presser frame 12 is held on the adhesive mold 1 by a clamp or the like (not shown).

When the vacuum pump 4 is operated in the above state, the air in the molding space 2 is sucked by the suction action of the vacuum pump 4. That is, the air in the molding space 2 flows through the air intake passage 3 through each ventilation hole 7 of the adhesive mold 1 by the suction action of the vacuum pump 4.
The air is sucked into the vacuum pump 4 through the air.

Due to the suction action of the vacuum pump 4, the molding space 2
As shown in FIG. A pad material 16 is brought into close contact with the material 14. As a result, the skin material 14
and pad material 16 are bonded together via the adhesive 17. Note that due to the reduced pressure in this sharpening space 2, the pad material 1
6, the hermetic dummy cover member 10
The airtight dummy cover 11 expands due to atmospheric pressure against its elasticity and presses the top surface of the pad material 16 almost uniformly, so the elasticity of the pad material 16 acts on the entire adhesive surface, and the adhesive surface The entire area is pressurized almost uniformly.

After completing the bonding work between the skin material 14 and the pad material 16 as described above, the operation of the vacuum pump 4 is stopped, the pump 4 is unsealed, and the air is formed through the intake passage 3. Outside air is allowed to flow into the space 2, and the reduced pressure state described above is released. Then, the pad material 16 and the hermetic dummy cover 11 of the hermetic dummy cover member 10 are restored to their original state due to their elasticity. After that, the airtight dummy cover member 10
Remove the skin material 1 from each locking tape 9 of the adhesive mold 1.
The product 18 may be taken out from the molding space 2 of the adhesive mold 1 by peeling off each of the overhanging pieces 15 of 4. Incidentally, a cross section of the product 18 is shown in FIG.

In addition, according to the above embodiment, the equipment is significantly simpler than that using a conventional press machine, so the equipment cost is low, and the equipment space is reduced, so the production volume of adhesive sheets is reduced. It is possible to obtain something that is easy to deal with increases and decreases in .

Further, the hermetic dummy cover member 10 is placed in the adhesive mold 1 by h.
It may be hinged so that it can be closed, or it may be attached to the elevating body of the press.

(Effects of the Invention) That is, according to the present invention, the skin material and the pad material can be aligned by FIJing the skin material into the molding space of the adhesive mold and inserting the pad material into the skin material. , by operating the air intake source with the skin material and pad material being liquid-retained by the sealed dummy cover member,
The suction action of the air intake source creates a negative pressure inside the sealed dummy horn member, and the suppression by atmospheric pressure acts on the pad and skin material through the sealed dummy cover member, and the skin material is brought into close contact with the inner surface of the molding space. At the same time, since adhesion between the skin material and the pad material is achieved with the pad material in close contact with the skin material, the position of the skin material and pad material can be reduced compared to the conventional method of forming an adhesive sheet using a press machine. In addition to easy alignment, the suction action of the air suction source applies a nearly uniform adhesive force to the bonding surface between the skin material and the pad material, which prevents wrinkles from forming on the skin material and increases the commercial value of the adhesive sheet. can be increased. This is particularly effective for bonding a pad material to a skin material formed in an adhesive sheet having a concave pattern such as slits formed on the surface.

In addition, productivity is improved and costs are reduced by eliminating the work of positioning the skin material and padding material with respect to the press machine, which was required in the conventional method of forming an adhesive sheet using a press machine. .

[Brief explanation of drawings]

1 to 5 are diagrams showing an embodiment of the present invention,
Figure 1 is a cross-sectional explanatory diagram of the bonding equipment for the skin material and padding material;
Figure 2 is an exploded perspective view of the same equipment, Figure 3 is a sectional view of the same, and Figure 4 is an exploded perspective view of the same equipment.
The figure is a cross-sectional view showing the set state of the skin material and padding material.
FIG. 5 is a sectional view of the adhesive sheet after adhesion, and FIG. 6 is a sectional view of a conventional device. DESCRIPTION OF SYMBOLS 1... Adhesive mold, 2... Molding space, 4... Vacuum pump (air intake source), 5... Inlet port, 10... Sealing dummy cover member, 14... Skin material, 16 ... Pad material, 17... Adhesive. Applicant Toyota Auto Body Co., Ltd. Representative Patent attorney Hidehiko Okada (3 others) Figure 2 zz Figure 6 ρ ■ (to)

Claims (1)

[Claims] An intake port of an air intake source is communicated with the molding space of an adhesive molding mold having a molding space corresponding to the outer surface of the seat, and a skin material previously molded into a predetermined shape in this adhesive molding mold is applied to the inner surface of the molding space. After fitting the pad material to the skin material via an adhesive, the adhesive mold is covered with a sealing dummy cover member to seal the skin material and the pad material in the molding space. A method for molding an adhesive sheet between a skin material and a pad material by using a dummy cover, characterized in that the pad material is closely adhered to the skin material by suctioning the air in the molding space by the suction action of the air suction source.