JPH0796241B2 - Composite molded article having skin and molding method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a resin molding, and more specifically, a composite molding obtained by a flow stamping molding method in which a flexible skin is attached to the surface of a substrate having rigidity. The present invention relates to a body and its forming method.

[Conventional technology]

In the flow stamping molding, for example, as disclosed in Japanese Patent Publication No. 59-17931, a plasticized resin material is poured into an open mold and the mold is closed while the resin is in a fluid state. Then, the pressing force is used to fill the molding space of the mold with the resin material to obtain a desired shape. This molding method is suitable for molding a product having a large molding area because it requires less radiation output and pressing force than injection molding and relatively easy die replacement.

Using this flow stamping molding, a method of making a composite molded body by pasting a skin layer on a hard base resin layer,
For example, it is disclosed in Japanese Utility Model Publication No. 61-47608. This method will be described with reference to FIG. 10 and FIG. 11. The molding apparatus comprises a hydraulic press 53 having an upper plate 51 and a lower plate 52.
The ram 54 can move up and down. An upper mold 55 and a lower mold 56 are fixed on the upper plate 51 and the lower plate 52, respectively, so as to face each other, and a desired molding space is formed between the two molds. When molding the above-mentioned composite product, first, the skin material 57 is held in close contact with the molding surface of the lower mold 56 by an appropriate means, for example, vacuum means provided in the lower mold, and then heated on this. A predetermined amount of the base resin 58 in a plastic state is supplied from the nozzle 60. After that, as shown in FIG. 11, the upper plate 51 descends to form a predetermined molding space between the upper and lower molds 55, 56, and at the same time, the resin 58 is pressurized to fill the space, It is molded into the shape of and skin material
It is stuck together with 57. Then, the upper board 51 is raised again, and the completed composite molded body is taken out of the mold.
Alternatively, the same result can be obtained by holding the skin material 57 on the surface of the upper mold 55 and directly supplying the base resin 58 onto the lower mold 56 to perform flow stamping molding. .

[Problems to be solved by the invention]

For example, in the case of making an automobile interior instrument panel 62 having an opening 61 incorporating a barrel type register for air conditioning as shown in FIG. 12, conventionally, first, according to the above-mentioned procedure, a safety resin lined with a foamed resin is used. A pad skin material 57 is prepared on the lower die, and a base resin 58 is supplied to the pad die to perform flow stamping simultaneous paste forming to obtain an intermediate product whose openings are covered with the skin material. Next, the opening
After cutting off the skin material 57 at the portion 61 to form a complete opening, as shown in FIG. 13, a tubular bezel 63 is fitted and fixed, and the barrel type register 64 is placed in the bezel 63. Bezel 63
Pivot on the side wall of.

However, this method requires the bezel 63, which is a separate member, and thus has the drawback of increasing the number of parts and the number of assembling steps, thus increasing the manufacturing cost.

[Means for solving problems]

The present invention is intended to solve the above-mentioned problems of the prior art, and enables simultaneous assembly of a composite molded body that enables assembly of parts with a small number of parts and simple post-processing, and that does not impair aesthetics. The molding method is used to form all at once.

According to the first aspect of the present invention, there is provided a composite molded body in which a skin material is attached to a surface of a base material having a cylindrical recess for accommodating a component on the surface, the recess traversing between peripheral walls thereof. Provided is a composite molded body that is divided into two regions in the depth direction by the bottom wall, and the skin material is attached to the entire surface of the base material except for the region at the inner side of the divided recess. To be done.

Further, according to the second aspect of the present invention, a cylindrical recess for accommodating components is provided on the surface, and the recess is divided into two regions in the depth direction by the bottom wall that crosses between the peripheral walls of the recess. The resulting base material is molded by a flow stamping molding method, and a skin material is simultaneously attached to the base material during this molding, and the entire surface of the base material is covered with the skin material except for the region at the back of the divided recesses. There is provided a method for producing a composite molded body, which comprises obtaining a coated composite molded body and then cutting the bottom wall of the recess of the obtained composite molded body from the peripheral wall.

According to the present invention, in a composite molded article having a skin obtained by flow stamping simultaneous paste molding, a component mounting region of a recess provided on the surface is preliminarily excluded from the covering of the skin by the bottom wall. Therefore, it becomes possible to directly hold the support shafts of the parts, etc., and since the area visible from the front is completely covered with the skin material, a clean finish can be obtained.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to the preferred embodiments shown in the drawings.

1 to 4 show a portion including a barrel-type register mounting recess 2 of an instrument panel composite molded article 1 for an automobile interior part according to the present invention. As is clear from the figure, in this composite molded body 1, a skin material 4 such as vinyl chloride resin lined with a foamed resin layer is integrally attached to the surface of a base material 3 made of polypropylene resin or the like having rigidity. It has a structured structure. This composite molded body 1
Can be manufactured by the flow stamping co-implantation method described in connection with the prior art.
That is, referring to FIG. 10, first, the skin material 4 is placed on the lower die 56, the resin of the base material 3 is supplied thereon, and then the upper die 55.
Is lowered onto the lower mold 56 to form a molding space between the two molds,
The resin may be filled in the space.

The structure of the composite molded body 1 will be described in detail. A concave portion 2 having a rectangular cross section is integrally provided on the front surface side, and a cylindrical portion 5 corresponding to the concave portion 2 projects rearward on the rear surface side. There is. A bottom wall 7 is provided in the recess 2 so as to traverse a space surrounded by the peripheral wall 6, so that the space in the recess 2 includes both the first area A on the front surface side and the second area B on the back surface side. Is divided into The skin material 4 including the peripheral wall 6 and the bottom wall 7 is adhered to the first region A, but the second region B is not covered with the skin material 4, which means that the flow stamping simultaneous laminating method is used. It will be clear from the principle of. or,
The free end 8 on the second region B side is open, and as a result,
This part has a structure similar to the tail of a bowl or the like.

The purpose of the bottom wall 7 is to limit the area of the surface of the peripheral wall 6 that should not be covered by the skin material 4 to the back surface side of the recess 2 in advance, and an appropriate shape suitable for this is provided. To be selected. In the case of the present embodiment, the bottom wall 7 has a mountain range shape projecting upward as viewed from the surface, but this is because the pivotal position of the support shaft 10 of the barrel type register 9 to be mounted in the recess 2 later is the skin. The result is that the material 4 is not covered and the other areas are covered as much as possible. This is because it is desirable that the area visible from the front surface of the panel 1, that is, the first area A, is covered with the skin material 4 as much as possible, but conversely, the second area B, which supports the register, is flexible. This is because the support of the resistor becomes unstable when the substrate is covered with 4, and the substrate 3 is required to be directly exposed only in this region.

The recessed portion 2 of the panel 1 of the composite molded body thus obtained
Before installing the barrel-type register 9 in the
As shown in the figure, the bottom wall 7 is removed by cutting the periphery thereof from the peripheral wall 6, and the recess 2 becomes a completely penetrated space. The inner peripheral surface of the first area A is covered with the skin material 4, while the base material 3 is left exposed on the inner peripheral surface of the second area B. Then, a hole 11 for receiving the support shaft 10 protruding from the center of both side surfaces of the register 9 is bored at a predetermined portion of the second region B. The hole 11 may be omitted depending on the structure of the attached component.

〔The invention's effect〕

According to the present invention, when a composite molded article having a concave portion is manufactured by flow stamping simultaneous laminating molding, a wall for covering a partial region of the concave portion that does not require a skin material from the surface is provided, and the skin laminating molding is performed. Later, the wall can be cut away to form the exposed portion of the substrate in the desired area. This makes it possible to hold the support shaft directly on a hard base material when mounting parts such as resistors in the recesses, and the part visible from the front is completely covered with a skin material to maintain its aesthetic appearance. Be done.

[Brief description of drawings]

1 to 4 show the shape of a region including a concave portion of the composite molded body according to the present invention, FIG. 1 is a perspective view seen from the front surface, FIG. 2 is a perspective view seen from the back surface, and FIG. Figure is X in Figure 1
-A sectional view taken along the line X, FIG. 4 is a sectional view taken along the line Y-Y, and FIGS. 5-8 show the shape of the bottom wall of this composite molded body cut away, and FIG. Fig. 6 is a perspective view as seen, Fig. 6 is a perspective view as seen from the back side, Fig. 7 is a sectional view taken along line XX in Fig. 5, and Fig. 8 is a sectional view taken along line YY similarly. Is a cross-sectional view showing a state in which a barrel-type register is installed in a recess, FIGS. 10 and 11 are side views showing the operation of a flow stamping simultaneous laminating machine, and FIG. 12 is an instrument in which a register is installed in an opening. FIG. 13 is a perspective view showing the front surface of the ment panel, and FIG. 13 is a sectional view taken along line XX of FIG. 1 ... Composite molded body (instrument panel) 2 ... Recessed portion 3 ... Base material 4 ... Skin material 5 ... Cylindrical part 6 ... Peripheral wall 7 ... Bottom wall 8 ... Free end 9 ... Barrel type Register 10 ... Spindle 11 ... Hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuru Furuhashi 45 Mukoihara, Nishinakayama, Fujioka-cho, Nishikamo-gun, Aichi 1 Pramac Co., Ltd. (56) Reference JP-A-1-44714 (JP, A)

Claims (4)

[Claims] 1. A composite molded article comprising a base material having a cylindrical recess for accommodating parts on the surface thereof, and a skin material attached to the surface of the base material, the recess having a depth defined by a bottom wall traversing between peripheral walls thereof. A composite molded body that is divided into two regions in the direction, and the skin material is attached to the entire surface of the base material except for the region at the inner side of the divided recess. 2. The composite molded article according to claim 1, wherein the skin material is lined with a foamed resin layer. 3. A cylindrical recess for accommodating parts is provided on the surface,
A base material formed by dividing the recess into two regions in the depth direction by a bottom wall crossing between the peripheral walls of the recess is molded by a flow stamping molding method, and at the same time, a skin material is attached during this molding. A composite molded body is obtained in which the entire surface of the base material excluding the region at the back of the divided recesses is covered with the skin material, and then the bottom wall of the recesses of the obtained composite molded body is cut off from the peripheral wall. Method for producing composite molded body. 4. The method for producing a composite molded article according to claim 3, further comprising forming holes for mounting parts in the peripheral wall, if necessary.