JPH0333085B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of integrally molding a skin material and a pad material. More specifically, the present invention relates to a method for integrally molding a skin material and a pad material. The present invention relates to a method of integrally molding a skin material and a pad material, in which a stock solution of foamed synthetic resin is injected into the pad material and the pad material is foam-molded integrally with the skin material.

[Conventional technology]

Traditionally, vehicle seats have been formed by covering a pad material with a cloth or synthetic resin skin material, and in this case, it is common for the skin material and pad material to be formed independently and then assembled. It was hot. In order to eliminate such assembling work, a method has been adopted in which the skin material is placed in a foam mold and joined together when the pad material is foam molded.

[Problem that the invention seeks to solve]

However, many of the sheets have relatively large curved parts such as side support parts on the outside, and it is difficult to accommodate these sheet shapes in the foam molding mold for the skin material. However, it is difficult to obtain the desired shape, and the edges of the surface material must be pinned or taped to the foam mold, which poses various problems in terms of workability and productivity. Ta. Furthermore, when vacuum forming a skin material made of synthetic resin, it is partially subject to tensile force, making it impossible to obtain a skin material with a uniform thickness, and in the case of a skin material made of cloth, under normal conditions, it is difficult to obtain a skin material with a uniform thickness. Because of this, it was not possible to obtain a sufficient shape by vacuum forming, and there was a risk of damage due to heating and suction.

The object of the present invention is to allow the skin material to be placed in a foam mold with great ease, to form a relatively large curved part on the outside, to maintain a uniform thickness, and to have an appearance free from wrinkles. To provide a method of integrally molding a skin material and a pad material, which can easily produce a sheet etc. with excellent properties, and which has excellent workability and productivity.

[Means for solving problems]

The present invention has been made in view of the above-mentioned problems, and includes disposing a skin material in a foam mold, injecting a stock solution of foamed synthetic resin into the foam mold, and foam-molding the pad material and the skin material together. In the method for integrally molding a skin material and a pad material, the foaming mold includes an upper mold and a lower mold, and the lower mold includes a first mold corresponding to an outer part of the pad material and at least one of the pad materials. a second mold corresponding to the central portion, and a second mold in the first mold.
The outer shape of the pad material is formed by matching the molds of the first or second mold.
At least one of the molds is connected to an elevating shaft of an up-and-down elevating means, and the skin material is made of a breathable fabric material that is previously formed to correspond to the molded shape of the pad material, and the skin material is arranged. When installing, either the first mold or the second mold is raised or lowered by the vertical elevating means to open the mold, and the portion of the skin material corresponding to the second mold is molded into the second mold. At the same time, the part corresponding to the first mold is placed on the second mold.
The pad material is led out to the outside of the mold, and in the guided state, the first and second molds are aligned by the vertical elevating means, and then the pad material is integrally molded with the skin material on the molding surface side of the second mold. The method is characterized in that the skin material and pad material are taken out from the foam mold, and the outside portion of the pad material is covered with the skin material in the portion corresponding to the first mold.

〔Example〕

An embodiment of the method for integrally molding a skin material and a pad material according to the present invention will be described in detail below with reference to the drawings.

1 to 6 schematically show an embodiment of the method of the present invention, and FIG. 1 shows a foam mold 11 for carrying out the present invention. This foaming mold 11 includes an upper mold 12 and a lower mold 13, and the lower mold 13 is used to form an outer portion 25 of a pad material 25 to be molded.
A fixed mold 13a as a first mold formed corresponding to b, and a movable mold 13b as a second mold movable up and down corresponding to the center portion 25a of the pad material 25.
It is formed from. In addition, the upper mold 12 and the lower mold 13 can be configured upside down, or the lower mold 1
It is also possible to form the fixed mold 13a and the movable mold 13b of No. 3 in reverse order. The reference numeral 15 is a fitting portion formed on the fixed mold 13a, and the reference numeral 16 is an elevating shaft connected to an elevating means (not shown).

As shown in FIG. 2, a movable mold 13b as a second mold of the lower mold 13 is raised, and a skin material 21 is placed on this movable mold 13b. Molding surface 1 of movable mold 13b
The part of the skin material 21 corresponding to the movable mold 13b, that is, the surface material 21a that covers the surface side of the center part 25a of the pad material 25, is positioned and attached to the 7 side, and the part of the skin material 21 that corresponds to the movable mold 13b is positioned and attached. The surface material 21b covering the portion corresponding to the fixed mold 13a, that is, the outer portion 25b of the pad material 25, is attached to the movable mold 13.
b, and if necessary, the end thereof is locked to a locking portion 18 or the like provided on the outside of the movable mold 13b to perform terminal processing. The skin material 21a that is coated on the surface side of the central portion 25a of the pad material 25 among the skin materials 21 is made by sewing or welding a cloth material in advance in accordance with the shape of the central portion 25a of the pad material 25. The skin material 21b that is formed and covers the outer portion 25b of the pad material 25 is formed by sewing or welding in accordance with the shape of the outer portion 25b of the pad material 25. The skin material 21b is not limited to being made of cloth, but may be made of synthetic resin.

Next, as shown in FIG. 3, the movable mold 13b and the fixed mold 13a are matched, and the foamed synthetic resin stock solution 2 is poured into the mold.
5' is injected into the lower mold 13 of the foaming mold 11, and the upper mold 12 is matched to form the pad material 25 and the skin material 21 by integral foam molding.

After opening the upper mold 12 and the lower mold 13, the movable mold 13b is raised in the same manner as shown in FIG. is taken out from the lower mold 13. In this state, as shown in FIG. 5, the skin material 21a covering the surface side of the central portion 25a of the pad material 25 and the pad material 25 are in a state of being integrally joined.
The skin material 21b covering the outer portion 25b of the pad material 25 is not bonded.

Next, as shown in FIG. 6, the seat frame 27
The seat 10 is formed by placing the pad material 25 on top and fixing the end of the skin material 21b covering the outer portion 25b of the pad material 25 to the seat frame 27 with clips 28 or other means. Incidentally, it is also possible to apply an adhesive between the outer portion 25b of the pad material 25 and the skin material 21b covering this portion 25b for bonding.

In the embodiment described above, the lower mold 13 is
Although the case where the fixed mold 13a as a mold and the movable mold 13b as a second mold are formed is explained, the upper mold 12 and the fixed mold 13a are formed integrally and this is formed as a lower mold as a first mold. Used as a mold, movable mold 1
3b can also be used as an upper mold as a second mold, in short, the fabric skin material 21a that covers the center portion 25a of the pad material 25 is integrally joined during foam molding of the pad material 25, and Any material may be used as long as the skin material 21b covering the outer portion 25b of the material 25 is coated in a subsequent process.

〔Effect of the invention〕

The above is an embodiment of the method of integrally molding the engaging skin material and the pad material according to the present invention. According to such a method, the skin material can be placed in the foam molding mold with great ease, It is possible to precisely shape the outer part of sheets, etc., which have a relatively large curved part on the outside, and the skin material will not be damaged by heating or vacuum suction, or the thickness will not change due to tension. Further, it is possible to obtain a sheet etc. with excellent appearance without the possibility of wrinkles etc., and it is possible to obtain a method of integrally molding the skin material and pad material with excellent workability and productivity.

[Brief explanation of drawings]

1 to 6 show an embodiment of the method of integrally molding a skin material and a pad material according to the present invention, and FIG. The figure is a cross-sectional explanatory view showing the state in which the skin material is arranged on the movable lower mold, Figure 3 is a cross-sectional explanatory view showing the state in which the stock solution of foamed synthetic resin is injected into the lower mold, and Figure 4 is the pad material. Fig. 5 is a cross-sectional view showing the skin material and pad material taken out from the foam mold, and Fig. 6 is a cross-sectional view showing the state in which they are attached to the seat frame. . In the figure, 10... Sheet, 11... Foaming mold,
12... Upper mold, 13... Lower mold, 13a... Fixed mold as first mold, 13b... Movable mold as second mold, 17... Molding surface of movable mold, 18... Locking Part, 21...Skin material, 21a...Central part of the skin material, 21b...Outside part of the skin material, 25...Pad material, 25a...Central part of the pad material, 25b...
...The outer part of the padded material.

Claims (1)

[Claims] 1. A method for integrally molding a skin material and a pad material, in which a skin material is placed in a foam mold, a stock solution of foamed synthetic resin is injected into the foam mold, and the pad material is foam-molded integrally with the skin material. The foam mold includes an upper mold and a lower mold, the lower mold having a first mold corresponding to an outer portion of the pad material and a second mold corresponding to at least a central portion of the pad material, The outer shape of the pad material is formed by matching the second mold to the first mold, and at least one of the first mold or the second mold is a lifting shaft of the vertical lifting means. The skin material is formed in advance from an air-permeable fabric to correspond to the molded shape of the pad material, and when disposing the skin material, either the first or second mold is used. One side is raised or lowered by a vertical elevating means to open the mold, and the part of the skin material corresponding to the second mold is disposed on the molding surface side of the second mold, and the part corresponding to the first mold is disposed. leading out the portion to the outside of the second mold, and aligning the first and second molds in the guided state by the lifting means;
Next, the pad material is integrally molded with the skin material on the molding surface side of the second mold, the skin material and the pad material are taken out from the foam mold, and the skin material in the portion corresponding to the first mold is removed. A method for integrally molding a skin material and a pad material, characterized in that the outer part of the pad material is coated.