JPH0140754B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to interior materials for automobiles, such as door trims,
The present invention relates to a method of partially adhering a skin material to the surface of a deep-drawn base material such as a quarter trim by vacuum adsorption. The present invention further relates to a method for easily attaching a skin material to a deep-drawn curved surface of a molded substrate.

The conventional technique for attaching a skin material to the surface of a deep-drawn base material as described above is to place the molded base material on a vacuum mold, and place a frame-shaped clamp above the molded base material to surround the entire molded base material. The skin material was held by the molded substrate, and the skin material was adhered to the entire surface of the molded base material by vacuum adsorption. On the other hand, in recent years, with the trend toward higher quality automobile interior materials, there has been a trend to use different skin materials for the upper part, ornament part, and carpet part in vacuum-formed soft trims such as door trims and quarter trims. Therefore, with the above-mentioned conventional technology, for example, even when it is desired to apply the skin material only to the upper part of the molded base material, due to the structure of the clamp, it is necessary to apply the skin material to the entire surface, which is obviously wasteful. It is uneconomical.

In addition, in the conventional technology, the skin material is only held in a flat shape by the clamp, which causes a very large elongation at the deep-drawn curved surface part of the molded base material during vacuum suction, and therefore, that part There are disadvantages in that the skin material becomes thinner, which not only reduces strength but also makes the appearance worse. Furthermore, it has been impossible to attach a skin material by vacuum suction to a molded base material that has deep drawing that exceeds the permissible elongation range of the skin material.

It is an object of the present invention to provide an improved method for applying a skin material to the surface of a deep-drawn substrate by vacuum suction, thereby making it possible to apply the skin material partially to the forming substrate, thereby achieving economical effects. The goal is to increase the

Another object of the present invention is to enable the skin material to be applied to any deep-drawn base material without losing its uniform thickness in the above-mentioned method;
The objective is to provide sufficient strength and an excellent aesthetic appearance.

Next, an embodiment of the present invention will be described with reference to the drawings. Although the present invention is shown applied to a quarter trim, this is merely an example and can be applied to any other vacuum formed soft trim as well.

In the figure, reference numeral 1 denotes a vacuum forming mold, and in this embodiment, as shown in FIG. 3, it is designed so that two deep drawing base materials 2 can be placed on its upper surface at symmetrical positions from the center. The deep drawing base material 2 is the first
As shown in the figure, the upper edge portion is bent and the shoulder 3
It has a curved surface portion 4 that protrudes high at one side end, and an adhesive 5 is applied to the upper portion including the shoulder portion 3 and the curved surface portion 4 to form a surface to which the skin material 6 is attached. ing. The skin material 6 is made of a thermoplastic synthetic resin sheet such as vinyl chloride or a fiber fabric such as knitted fabric lined with a thermoplastic synthetic resin film to provide vacuum retention performance.

Reference numeral 7 denotes a frame-shaped clamp that holds the skin material 6 between the upper frame 7a and the lower frame 7b, and is compatible only with the adhesive surface bounded by the adhesive 5 of the deep drawing base materials 2, 2. It is formed into a size of 1 and placed above the vacuum forming mold 1. Also, the upper frame 7a and lower frame 7b of the clamp 7
is formed with a curved portion 8 that matches the shape of the curved surface portion 5 located on the attachment surface of the deep-drawn base material 2, and the clamp 7 as a whole matches the shape of the attachment surface of the deep-drawn base material 2. It is formed into a curved shape. Further, it is preferable that either the upper frame 7a or the lower frame 7b of the clamp 7 is formed of an elastic material such as a leaf spring, and further, the opposing inner surfaces and the lower frame 7
A packing member 9 having cushioning properties such as rubber is provided on the lower surface of b to completely maintain airtightness between the clamp 7 and the skin material 6 and between the clamp 7 and the upper surface of the vacuum forming mold 1.

Next, to explain the operation of the method of the present invention, first, the third
As shown in the figure, the upper frame 7a and lower frame 7 of the clamp 7
The skin material 6 is inserted and held between the spaces 1 and 2, and the deep drawing base materials 2, 2 are placed on the upper surface of the vacuum mold 1. Next, the vacuum mold 1 is raised to press the deep drawing base materials 2, 2 and the clamp 7 together as shown in FIGS. 4 and 5. At this time, the skin material 6 held by the clamp 7 corresponds only to the bonding surface portion bounded by the adhesive 5 of the deep-drawn base materials 2, 2, and corresponds to the surface shape of the bonding surface. I will do it. Further, the clamp 7 reliably maintains an airtight state between the skin material 6 and the bonding surfaces of the deep-drawn base materials 2, 2 by means of a packing member 9 on the lower surface of the lower frame 7b.
Then, vacuum suction is started in this state, and the skin material 6 held by the clamp 7 is moved to the deep drawing base material 2, 2.
It is to be attached only to the adhesive surface.

As detailed above, according to the method of the present invention, the skin material can be partially attached to the surface of the deep-drawn base material, and therefore, unlike the conventional method, an extra skin material is used. It is not necessary and waste can be eliminated, which is very economical, and the weight of the molding base material can be significantly reduced.

In addition, by holding the skin material in a specially shaped clamp that is curved to match the surface shape of the adhesion surface of the deep-drawn molded base material, excessive elongation of the skin material in the deep-drawn part of the molded base material is prevented. As a result, the skin material can be applied with a uniform thickness, providing sufficient strength and an excellent aesthetic appearance. Furthermore, it has many advantages, such as the ability to easily attach the skin material to molded substrates that have deep-drawn portions that exceed the elongation rate of the skin material, which was not possible with conventional methods.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the deep-drawn base material, FIG. 2 is an exploded perspective view of the clamp, and FIG. 3 is a perspective view of the deep-drawn base material and skin material set, respectively.
FIG. 4 is a perspective view during vacuum suction, FIG. 5 is a vertical sectional view thereof, and FIG. 6 is a perspective view of the finished product. 1... Vacuum forming mold, 2... Deep drawing base material, 6
...Skin material, 7...Clamp.

Claims (1)

[Claims] 1 Place a deep-drawn molding base material on a vacuum mold, place a frame-shaped clamp that holds the skin material above it, and position the clamp so as to partially oppose the molding base material. At the same time, it is curved and formed to match the deep drawing shape of the surface of the molded base material,
1. A method for partially adhering a skin material to a deep-drawing molded base material for an automobile, characterized in that the skin material held by the clamp is partially pasted to the molded base material by vacuum suction.