JP2682674B2 - Foamed resin molding and its molding method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a method for molding an epidermis used by being attached to the surface of, for example, an instrument panel installed in an automobile. The present invention relates to a foamed resin molded article which is advantageous for attaching a foam to the back side of a skin formed by slush molding, and a molding method thereof.

[Conventional technology]

For example, as a conventional example of a skin body used for a bicycle instrument panel, there is one as shown in FIG.
This has an outer skin 3 adhered to the surface of an instrument panel core 1 via a foaming cushioning material 2. The outer skin 3 is a first skin of a desired color according to the taste. A two-tone color skin body made of the material 3a and the first skin material 3a and the second skin material 3b having a different color. A foamed resin molded product having such a two-tone color skin, that is, the third
As a conventional method for forming the instrument pads 2 and 3 as shown in the figure, for example, as shown in FIG.
f, and a first skin material 3a having a falling portion g formed thereon, and a second skin material 3b having a rising portion e'formed at the peripheral portion thereof are formed in advance, and then these first skin material 3a 3a and the second skin material 3b are set in the foaming mold 6 having the ridges 4 for separating, that is, the concave portions formed by the rising portion e, the protruding portion f, and the falling portion g of the first skin material 3a. , Is fitted and fitted to the ridge 4 of the foaming mold 6, and then the rising portion e ′ of the second skin material 3b is the first
The nozzle 3 is brought into contact with the falling part g of the skin material 3a, and then the foamable resin liquid is moved from the A direction or the A'direction onto the first skin material 3a and the second skin material 3b. (Not shown), then the foaming mold is closed, and then the foamable resin liquid is heated to foam and
The foam layer integrated with the skin material 3a and the second skin material 3b, that is, the foamable cushioning material 2 is formed.

[Problems to be solved by the invention]

However, in the shapes of the first skin material 3a and the second skin material 3b as shown in FIG. 4, when the foamable resin liquid (hereinafter referred to as the resin liquid) is poured, a part of the resin liquid is used as the first skin material. In order to enter between the falling part g of 3a and the rising part e'of the second skin material 3b, a fourth part is formed between the falling part g and the rising part e'when the resin liquid is foamed. As shown in FIGS. (B) and (C), the foamed body 5 is formed due to leakage, resulting in a defective product.

In order to prevent the generation of such defective products, the shape of the skin was changed as shown in FIGS. 5 and 6. That is, in FIG. 5, the rising portion e and the overhanging portion f are provided at the peripheral portion of the first skin material 3a.
And a rising portion e'and an overhanging portion f'are formed at the peripheral portion of the other second skin material 3b, and the projection 4 is sandwiched between these rising portions e and e '. Then, the resin liquid is poured in at a predetermined pressure from a nozzle moving from the A direction or the A'direction. In this case, when the nozzle moving direction for applying the resin liquid is the A direction, as shown in FIG. 5B, the resin liquid does not flow into the joint between the skin materials 3a and 3b. When the nozzle moving direction is the A ′ direction, as shown in FIG. 5 (C), the resin liquid flows into the inside from between the overhanging portions f and f ′ of the two skin materials 3a and 3b. Foam 5 leaked into the
Is formed, resulting in a defective product.

As shown in FIG. 6, the first skin material 3a has a rising portion e on the edge portion thereof, and the second skin material 3b has a rising portion e ', an overhang portion f'and a falling portion on the edge portion thereof. When g'is formed and both skins are set as shown in the figure, and then the resin liquid is poured from the nozzle moving from the A direction or the A'direction,
The movement of the nozzle from the A direction did not cause any trouble as shown in FIG. 6B, but if the movement direction of the nozzle is the A ′ direction, as shown in FIG. Skin material 3a
Since the resin liquid flows into the inside from between the rising portion e of the second skin material 3b and the falling portion g'of the second skin material 3b, the second skin material 3b
This causes a problem that a leaked portion of the foam body 5 is generated on the front side surface of the overhanging portion f '.

The present invention has been made in order to eliminate such a conventional problem, and its object is a structure of a different color epidermis developed so that a foamable resin liquid does not flow between both epidermis and its structure. It is a combination and is to provide a foamed resin molded product and a molding method therefor capable of obtaining a high-quality product without forming an exposed portion of the foamed layer on the surface side of the epidermis.

[Means for solving the problem]

In order to achieve the above-mentioned object, the foamed resin molded article according to the present invention is integrally formed on the edge of the first skin material 3a, on the rising portion e standing on the back side of the first skin material 3a and on the tip of the rising portion e. A first overlapping portion having a protruding portion f extending laterally and extending laterally, and a rising portion e ′ standing upright on the back surface side of the second skin material 3b and a rising portion at the edge of the second skin material 3b. e ′ is integrally extended to the tip portion of the overhanging portion f and is laterally extended integrally with the overhanging portion f ′ and the tip portion of the overhanging portion f ′ so as to be superposed on the rising portion e. As described above, a second overlapping portion having a falling portion g'falling on the back surface side of the skin material is provided, and the first skin material 3a and the second skin material 3b are separated by the rising portions e, e'by a predetermined distance. In this state, the second polymerized portion is superposed so as to wrap the first polymerized portion, and the first skin material 3a and the first skin material 3a Is to characterized in that on the back side of the skin material 3b by forming a foamed resin body 2.

Further, in order to achieve the above-mentioned object, the method for molding a foamed resin molded article according to the present invention is such that a rising portion e and a rising portion e which stand upright on the back surface side of the first skin material 3a are provided at the edges of the first skin material 3a. A first overlapping portion having an overhanging portion f which is integrally extended at the tip portion and extends laterally is provided, and a rising portion e standing upright on the rear surface side of the second skin material 3b is provided at the edge of the second skin material 3b. ′, A protruding portion f ′ which is integrally extended to the leading end of the rising portion e ′ and is laterally extended so as to be superposed on the protruding portion f, and is integrally extended to the leading end of the protruding portion f ′. One of the ridges 4 of the foam molding die 6 provided with the second overlapping portion having the falling portion g ′ which falls on the back surface side of the skin material so as to be superposed on the rising portion e and having the ridge 4 on the surface. The rising portion e of the first skin material 3a is located on the side surface, and the first skin material 3a is stretched on the top of the ridge 4. The protrusion f is positioned, the rising portion e ′ of the second skin material 3b is positioned on the other side surface of the protrusion 4, and the protruding portion f ′ of the second skin material 3b is protruded from the first skin material 3a. It is positioned above the portion f, and the falling portion g'of the second skin material 3b is connected to the rising portion e of the first skin material 3a.
It is characterized in that the foamed resin body 2 is positioned on the upper side, and thereafter, the foamed resin material is filled and the mold is closed, and the foamed resin body 2 is foam-molded on the back surfaces of the first skin material 3a and the second skin material 3b.

〔Example〕

The present invention will be described in detail below based on the embodiments shown in FIGS. 1 and 2.

In the present embodiment, the purpose is to use the first skin material 3a and the second skin material 3b of different colors similar to those shown in the conventional example in combination, and both skin materials 3a, 3b are It is molded by the powder slush molding method. The first skin material 3a is formed with a rising portion e and then an overhanging portion f at the edge portion thereof, and the second skin material 3b is provided with a rising portion e ′ and then overhanging at the edge portion thereof. The part f ′ and then the falling part g ′ are formed.

Next, the first skin material 3a and the second skin material 3b of this shape are set in the foam molding die 6 having the ridges 4. At the time of this setting, first, the rising portion e and the protruding portion of the first skin material 3a are set. f
Are set so as to contact the side surface of the ridge 4 to a flat surface. Next, the rising portion e'and the overhanging portion f'of the second skin material 3b.
Then, the second wrapping material 3b is set in the foam molding die 6 such that the ridge 4 and the overhanging portion f and rising portion e of the first skin material 3a are covered by the falling portion g '. Next, a foamed polyurethane resin liquid, for example, is jetted and flowed into both of the skin materials 3a and 3b from a nozzle, but this flow direction may be either the A direction or the A'direction. For example, when the injection direction of the resin liquid is in the A direction, the second skin material 3b is guarded by the rising portion e ', the overhanging portion f', and the falling portion g ', and both the skin materials 3a and 3b are protected. The resin liquid does not invade the joint surface (see FIG. 1B). When the injection direction of the resin liquid is the A'direction, the second skin material
A slight penetration occurs between the falling portion g'of 3b and the rising portion e of the first skin material 3a. The overhanging portion f of the first skin material 3a and the overhanging portion f'of the second skin material 3b. No further bleeding will occur due to the gap resistance between and. Thus, after the resin liquid flows in, after the mold is closed with a foaming mold (not shown) in which the core material 1 is set, the resin liquid is foamed to obtain the second
A foamed resin molded product as shown in the figure can be obtained. The first and second skin materials 3a, 3 of the foamed resin molded product thus obtained
On the front side of b, the foam did not squeeze out, and a good quality foamed resin molded product was obtained.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, according to the present invention, on the edge of the first skin material 3a, the rising portion e standing upright on the back surface side of the first skin material 3a and the tip portion of the rising portion e are integrally extended and laterally projected. The first overlapping portion having the overhanging portion f is provided, and at the edge of the second skin material 3b,
A rising part e ′ standing upright on the back surface side of the second skin material 3b, a protruding part f ′ which is integrally extended to the tip part of the rising part e ′ and laterally protruded so as to be superposed on the protruding part f, and A second overlapping portion having a falling portion g'extending integrally with the tip of the overhanging portion f'and falling on the back surface side of the skin material so as to be superposed on the rising portion e is provided, and the first skin material is provided.
3a and the second display material 3b are overlapped with each other so that the second overlapping portion surrounds the first overlapping portion, and the first skin material 3a.
Also, the foamed resin body 2 is formed on the back surface side of the second skin material 3b to obtain a foamed resin molded article. According to the present invention,
The foam does not stick out from the surface of the molded product, that is, the seam of the different color skin, and it is possible to produce a molded product of good quality.

[Brief description of the drawings]

1 (a), (b), and (c) are cross-sectional explanatory views of a main part of a foamed resin molded product according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a foamed resin molded product according to this embodiment. FIG. 3 is a perspective view of the instrument which is the foamed resin molded product, and FIGS. 4 (a), (b), (c), FIG. 5 (a), (b),
(C) and FIGS. 6 (a), (b), and (c) are explanatory views of the conventional example. 1 ... Core material, 2 ... Foam resin body 3a ... 1st skin material, 3b ... 2nd skin material 4 ... Protrusion, 5 ... Overhanging foam body 6 ... Foaming mold, e, e '... … Rising part f, f ′ …… Overhang part, g, g ′ …… Falling part

Claims (2)

(57) [Claims] 1. A rising portion (e) standing upright on the back surface side of the first skin material (3a) and a tip end portion of the rising portion (e) integrally extending along the edge of the first skin material (3a). And a second superficial material (3
At the edge of b), a rising portion (e ′) standing upright on the back surface side of the second skin material (3b) and a leading end portion of the rising portion (e ′) are integrally extended to the protruding portion (f). The projecting portion (f ') laterally projecting so as to be superposed and the rising portion (e) integrally extended to the tip of the projecting portion (f').
A second overlapping portion having a falling portion (g ′) that falls on the back surface side of the skin material so that the first skin material (3a) and the second skin material (3b) can be overlapped with each other. (E),
In a state where (e ') is separated by a predetermined distance, the second overlapped portion is overlapped so as to surround the first overlapped portion, and the back surface side of the first skin material (3a) and the second skin material (3b). A foamed resin molded article, characterized in that the foamed resin body (2) is formed on the. 2. A rising portion (e) standing upright on the back surface side of the first skin material (3a) and a tip end portion of the rising portion (e), which are integrally extended to the edges of the first skin material (3a). And a second superficial material (3
At the edge of b), a rising portion (e ′) standing upright on the back surface side of the second skin material (3b) and a leading end portion of the rising portion (e ′) are integrally extended to the protruding portion (f). The projecting portion (f ') laterally projecting so as to be superposed and the rising portion (e) integrally extended to the tip of the projecting portion (f').
A second overlapping portion having a falling portion (g ′) that falls on the back surface side of the skin material so as to be superposed on the surface of the foam molding die (6) having a protrusion (4) on the surface. 4) The rising portion (e) of the first skin material (3a) is located on one side surface, and the first skin material (3a) is placed on the top of the ridge (4).
The protruding portion (f) of the second display material (3b) is positioned on the other side surface of the ridge (4), and the protruding portion (f) of the second display material (3b) is positioned on the other side surface of the protrusion (4). (F ') is positioned on the overhanging portion (f) of the first skin material (3a), and the falling portion (g') of the second skin material (3b) is placed on the first skin material (3a). ) Is placed on the rising portion (e), and then the foamed resin material is filled and the mold is closed, and the foamed resin body (2) is provided on the back surfaces of the first skin material (3a) and the second display material (3b). A method for molding a foamed resin molded article, which comprises foam molding.