JPS6124980B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention primarily relates to a method of manufacturing an instrument panel for an automobile.

The applicant has previously proposed a method of this type in which a composite sheet made by laminating a leather sheet and a foam sheet vertically and a hard core material are pressed against each other by the closing operation of molds on both outer sides. We have proposed a method in which they are bonded to each other with adhesive on opposing surfaces, but in this case, the adhesive is generally applied in advance to the opposing surfaces of the hard core material. In some cases, the shape of the core material is relatively complex, and it is difficult to apply the adhesive uniformly to the facing surface when there are severe irregularities. It is considered that the volatilization of the solvent tends to be delayed in this area, which is accompanied by disadvantages such as poor adhesion.

In this case, if an adhesive is applied to the composite sheet side in advance and the composite sheet is polymerized and bonded to the hard core material through this, the composite sheet is usually formed wider than the hard core material,
The adhesive is formed into a material having a surplus portion that does not adhere to the polymerized sheet, so that the composite sheet of adhesive can be reliably and easily applied to the surface to be polymerized and bonded, and the final surplus portion is cut to form a molded product. A method for producing a good product is that when the mold is closed during its production, the surplus part is
It adheres to the opposing mold surface via the pre-applied adhesive, resulting in an inconvenience that makes manufacturing work less smooth.

The object of the present invention is to provide a method free of such inconveniences, and the first invention is a method comprising a hard core material, a leather sheet, and a foam sheet laminated vertically, and The composite sheet, which is formed wider than the core material and has surplus parts on both outer sides when bonded to the core material, is pressed against each other by the closing operation of the molds on both outer sides, and the composite sheet side is pressed in advance. In the manufacturing method of an instrument panel in which the instrument panel is bonded to each other via an adhesive applied to the opposing surfaces of the composite sheet, when the mold is closed, the gap between the excess portion of the composite sheet and the facing mold surface is It is characterized by the fact that there is a space between the two.

The second invention is made by laminating a hard core material, a leather sheet, and a foam sheet vertically, and is formed wider than the hard core material so that when bonding with the core material, there is an excess on both outer sides. The composite sheet that produces the part is pressed against each other by the closing operation of both outer molds,
In a method for manufacturing an instrument panel in which the instrument panels are bonded to each other via an adhesive applied in advance to the facing surfaces of the composite sheet, the excess portion of the composite sheet faces the surplus portion of the composite sheet when the mold is in a closed state. A separately prepared pattern paper or other sheet member is interposed between the composite sheet and the mold surface, and is bonded to the surplus portion of the composite sheet via the adhesive. .

Embodiments of the present invention will be described with reference to the attached drawings. In the drawings, reference numeral 1 denotes a composite sheet, and the sheet 1 is made by laminating a leather sheet 2 made of polyvinyl chloride or other material and a foam sheet 3 made of polypropylene foam or other material on top of each other, for example, as shown in the first drawing. Arranged above and below together with a hard core material 4 made of ABS resin or other material prepared separately in advance, upper and lower parts 1 on both outer sides thereof
interposed between the pair of molds 5, 5, and then, for example, a second
By closing both molds 5 and 5 together as shown in the figure,
The sheet 1 and the core material 4 were brought into pressure contact with each other, and both 1 and 4 were adhered to each other with an adhesive 6 on their opposing surfaces. In this case, the sheet 1 is stretched and guided between a pair of left and right clamp members 7, 7, and is softened by heating in advance to prepare for molding. Processing was performed.

Although the above is not particularly different from the conventional adhesive, according to the present invention, the adhesive 6 is applied to the composite sheet 1 side in advance as shown in FIG. This allows the coating to be applied evenly.

In this case, the sheet 1 is prepared in advance to have a relatively wide width, and when adhering to the core material 4, there should be surplus parts 8, 8 extending outward on both sides.
It is desirable to treat them appropriately. That is, the surplus portions 8, 8 are removed from the core material 4 by the closing operation of both molds 5, 5.
It is sandwiched between the opposing mold surfaces of both molds 5, 5 on both outsides of the mold, and when adhesive 6 is present in advance, this adheres to one mold surface and is undesirable. For example, the following measures are taken. I did it like that. That is, for example, in the embodiments shown in FIGS.
As clearly shown in the figure, there is a relief space 9 between the mold surfaces,
9 was prepared, and when the molds 5, 5 are closed, the above-mentioned surplus parts 8, 8 remain within the spaces 9, 9, and are prevented from adhering to the mold surfaces.

3 and 4, instead of having large spaces 9, 9 as shown in the second figure, there are spaces 9, 9 which are filled with separate paper patterns or other sheet members 10, 10, Separate paper patterns or other sheet members 10, 10 were interposed in advance in this portion, so that each surplus portion 8 was adhered to each sheet member 10 and prevented from adhering to the mold surface.
In this case, since the excess portion 8 will be removed by trimming next, adhesion of the sheet member 10 will not cause any particular inconvenience.

As described above, according to the present invention, when the mold is in the closed state, a space exists between the excess portion of the composite sheet and the facing mold surface, or a separately prepared sheet member is interposed in the space. Since this is bonded to the surplus portion, the above-mentioned disadvantages of the conventional method can be eliminated and the effect obtained can be obtained.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of one example of the method of the present invention, and FIGS. 3 and 4 are cross-sectional views of another example. 1... Composite sheet, 2... Leather sheet, 3...
...Foam sheet, 4...Hard core material, 5, 5...Mold, 6...Adhesive.

Claims (1)

[Scope of Claims] 1. Consists of a hard core material, a leather sheet, and a foam sheet laminated vertically, and is formed wider than the hard core material so that when bonding to the core material, a hard core material is formed on both outer sides. A type of installation in which a composite sheet that produces an excess portion is pressed against each other by the closing operation of both outer molds, and bonded to each other via an adhesive applied in advance to the facing surfaces of the composite sheet side. 1. A method for manufacturing an instrument panel, characterized in that when the mold is in a closed state, a space is provided between the excess portion of the composite sheet and the mold surface facing it. 2. A composite sheet that is made by laminating a hard core material, a leather sheet, and a foam sheet vertically, and is formed wider than the hard core material to create surplus parts on both outer sides when bonded to the core material. and are pressed against each other by the closing operation of both outer molds, and are bonded to each other via an adhesive applied in advance to the opposing surfaces of the composite sheet side. When the mold is in the closed state, a space is provided between the excess portion of the composite sheet and the mold surface facing it, and a separately prepared pattern or other sheet member is interposed in the space, and this is inserted into the mold. A method for manufacturing an instrument panel, characterized in that the excess portion of a composite sheet is adhered via the adhesive.