JPH0669732B2 - Molding method for door trim with ornament - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a door trim (generally referred to as a door trim board), and more particularly to a method for forming a door trim with an ornament attached to a vehicle door. It is related.

(Prior Art) Generally, when molding a door trim with an ornament, a trim skin material is molded into a predetermined door trim shape by a vacuum molding die to obtain a molding skin, and a molding die molding part in which the molding skin is attached. An elastic layer made of a foamed synthetic resin material (hereinafter, simply abbreviated as a foamable resin) is filled in the space part of the foamed resin and bonded to the molding skin,
Further, there is known a vacuum forming technique for an integrally formed door trim having an ornament base mounting recess.

Then, as shown in FIG. 12, an ornament base material 24 covered with a decorative ornament 23 is arranged in the mounting recess 22 of the molded product 21, and a fastening claw 25 on the back surface of the ornament base material 24 is formed. The ornament base material 24 is fixed together with the ornament 23 by inserting it into the stopper hole 22A of the mounting recess 22 of the 21 and bending it. Reference numeral 26 is a trim skin material, and 27 is an elastic layer.

Further, as shown in FIG. 13, for example, the means for mounting the ornament 33 in the mounting recess of the molded product 31 is a fixing means for sequentially inserting the decorative pin 35 or the molding on the outer periphery of the ornament 33 arranged in the mounting recess 32, or the mounting recess. Means (not shown) for arranging a welding ribbon on the outer periphery of the ornament arranged in and fixing it by heat welding are used.

(Problems to be solved by the invention) However, since the conventional ornament fixing means described above fixes the ornament to the molded product, the ornament is fixed at the fixing position, especially when the elastic layer of the ornament is molded. It was necessary to accurately position the outer peripheral position in advance.

In addition, the ornament is post-fixed by inserting the fastening claw into the mounting recess of the molded product and bending it, so there is a misalignment during mounting and the vertical arrangement is incorrect, which not only reduces productivity. In addition, there is an inconvenient problem that an ornament has a poor stickiness.

Therefore, the present invention has been devised in view of the above-mentioned problems, and is to form a trim skin material, an elastic layer formed of a foaming resin, and an ornament in a state where an ornament is arranged in a forming die for vacuum forming. Molding of door trim with ornament that can solve the inconvenient problem when the ornament is attached to the molded product of the trim skin material and the elastic layer by the fixing means such as a decorative pin by fixing them simultaneously. To provide a method. Another object of the present invention is to provide a method for forming a door trim with an ornament, which is capable of reducing the number of production steps and improving the economical efficiency.

(Means for Solving the Problems) According to the means of the present invention, an ornament in which the back surface is supported by an ornament base material is attached to the outer surface of a molded skin, exposing the ornament, and elastic on the back surface of the molded skin. A method for molding a door trim in which layers are laminated and adhered, wherein a predetermined portion of a molding portion of a vacuum-moldable mold has at least an outer surface covered with an ornament and a predetermined number of portions having a cut-in recess of a skin on a predetermined portion of the back surface. The ornament base material provided with the fixing projections is arranged so that the fixing projections are on the inside, and the trim skin is arranged on the ornament base material, and vacuum forming is performed.
After that, the molded part on the back surface of the molded skin is filled with a foamable resin to be foamed.

Further, in the present invention, (a) the molding die is composed of an upper die and a lower die, and in a molding portion formed by both the die, an ornament receiving surface for arranging an ornament base material having at least an outer surface covered with an ornament, and Use one with positioning ribs.

(B) The ornament is a decorative cloth such as a fabric, and covers the outer surface of the ornament base material and the outer peripheral portion of the decorative cloth is bent down to the back surface side of the ornament base material.

(C) The ornament base material is made of a steel plate, and the fixing projections are formed in a hook shape by being cut and raised.

(D) The ornament base material is made of hard synthetic resin, and the fixing projections are integrally molded.

Can be an embodiment.

(Operation) By vacuum forming, the trim skin material is formed in conformity with the shape of the forming portion and also in the shape corresponding to the back surface side of the ornament base material. On the back surface side of the ornament base material, the trim skin is formed so as to cover the fixing projections. Next, the elastic layer is formed by the filling of the foamable resin and the subsequent foaming, and the trim skin material is pressed in close contact with the molding portion and the ornament base material. For this reason, the trim skin material on the back surface side of the ornament base material is formed in close contact with the fixing protrusions, and the adhesion between the trim skin material and the fixing protrusions is improved. After solidification of the foamed resin, it is demolded to obtain a molded door trim with an ornament attached.

(Embodiment) Next, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows a door trim 1 to which an ornament 4 made of a fabric material is attached, and the door trim 1 is formed in a predetermined shape corresponding to the inner surface of a vehicle door. The door trim 1 has an elastic layer 3 bonded to the back surface of a trim skin material 2, and an ornament 4 serving as a decoration is attached to a predetermined position on the outer surface side.

As shown in FIGS. 2 and 3, the ornament 4 is attached to the ornament base material 5 with the outer surface of the ornament base material 5 serving as a reinforcing plate being covered and the outer peripheral portion 4A being bent on the back surface of the ornament base material 5. There is. The ornament base material 5 is formed with a reinforcing plate such as a synthetic resin plate or a metal plate, and a predetermined number of fixing protrusions 6 are formed on the back surface side. The fixing projection 6 is formed with a hook-shaped concave portion so that the trim skin material 2 and the elastic layer 3 can be bitten and fixed when vacuum forming the door trim 1, that is, so-called negative angle molding can be performed.

When the base material is a synthetic resin plate, the fixing projections 6 of the ornament base material 5 are integrally formed with the synthetic resin plate, and when the base material is a metal plate, they are cut and raised portions cut and raised from the metal plate. . The ornament 4 is in a state of enclosing the outer surface and the outer peripheral portion of the back surface of the ornament base material 5, and the outer surface of the ornament 4 is exposed to be embedded in the laminated molded body of the trim skin material 2 and the elastic layer 3 and fixed. The trim skin material 2 and the elastic layer 3 are tightly adhered to the protrusions 6 by negatively molding them.

The door trim 1 of this example is molded by the vacuum molding mold 7 shown in FIGS. 4 and 5. The molding die 7 comprises a lower die 8 and an upper die 9 for forming the door trim 1, and predetermined molding portions 8A, 9A are formed on the mating surfaces of both the dies. The molding portion 8A of the lower mold 8 is for molding the outer surface side of the door trim 1, and is provided with an ornament receiving surface 10A and a positioning rib 11A. The molding part 9A of the upper mold 9 forms the inner surface side of the door trim 1, and is formed in a shape corresponding to the molding part 8A of the lower mold 8 and a shape capable of corresponding to the fixing projection 6 of the ornament base material 5. Is formed in. 10B is a molding uneven surface on the rear surface side of the ornament base material, and 11B is a groove portion into which the positioning rib 11A is inserted. Molding part 8A of the lower mold 8
A large number of vacuum holes (not shown) for vacuum forming are formed in the mold, and when the lower mold 8 is used, the lower mold 8 is connected and fixed to a pressure reducing means (not shown). The upper die 9 is slidable up and down with respect to the lower die 8, and the gap between the molding portions 8A and 9A can be adjusted when the trim skin material 2 and the foaming resin are molded. The molding portion 9A of the upper mold 9 is provided with a large number of pressurizing pores (not shown) for pressurizing as necessary during vacuum forming.

Thus, a metal rectangular ornament base 5 having six key-shaped fixing projections 6 provided on the back surface thereof and a slightly larger ornament 4 such as a fabric covering the outer surface thereof are prepared. Next, the outer surface of the ornament base 5 and the outer peripheral portion of the inner surface are covered with the ornament 4, and the ornament 4 is adhered to the ornament base 5 if necessary. The ornament base material 5 covered with the ornament 4 is positioned and set on the ornament receiving surface 10A of the lower mold 8 molding portion 8A with the ornament 4 side (outer surface of the ornament base material 5) facing downward.

Then, as shown in FIG. 6, a trim skin material 2 such as a PVC (polyvinyl chloride) sheet which has been preheated.
Is placed so as to cover the entire molding portion 8A of the lower die 8, and the upper die 9 is set on the upper portion. Then, the pressure reducing means is operated to vacuum form the trim skin material 2. As shown in the lower mold 8 portion of FIG. 7, when the vacuum molding is completed, the trim skin material 2 molded in a shape covering the molding portion 8A of the lower mold 8 and the back surface of the ornament base material 5 is obtained. In the fixing protrusion 6 portion on the back surface of the trim skin material 2, the trim skin material 2 covers the outer surface of the fixing protrusion 6 and is formed into a negative angle recessed into the key-shaped recess 6A of the fixing protrusion 6. It will be in a state of being.

Next, an unfoamed foaming resin 12 such as foaming PVC is supplied onto the trim skin material 2 of the lower mold 8, and the position of the upper mold 9 is adjusted and held so as to form the molding portions 9A at predetermined intervals, If necessary, the foamable resin is heated and foam-molded. By this foam molding, as shown in FIG. 9, the elastic layer 3 is adhesively formed on the back surface of the trim skin material 2.

The negatively shaped trim skin material 2 of the fixing projection 6 is covered with the foamed elastic layer 3, so that the fixing property between the fixing projection 6 and the trim skin material 2 is enhanced. It should be noted that the trim skin material 2 portion where the negative angle molding is insufficient is made sufficient by the pressure of the foamed resin during foam molding.

After that, the upper mold 9 is raised, and the molded door trim 1 can be obtained from the lower mold 8. This door trim 1 has an ornament 4 attached to a predetermined position of a trim skin material 2,
The elastic layer 3 was adhered to the back surface and the moldability was good. The ornament 4 was attached via the ornament base material 5 and had good fixability.

(Effects of the Invention) The present invention is configured so that trim skin material is formed, foaming resin is filled, and foaming is performed in a state where the ornament base material covered with the ornament is placed in a forming mold for vacuum forming. A door trim with an ornament can be obtained by molding the skin material, molding the elastic layer made of a foaming resin, and simultaneously bonding the ornament together with the ornament base material to the molded article.

Since the present invention can obtain a door trim with an ornament in a molding die, the number of manufacturing steps can be reduced and the manufacturing cost can be reduced as compared with the case where the ornament base material covered with the ornament is attached to the door trim molded product as in the past. It is possible to make economically, and to make a familiar product in which the door trim and the door trim base material are in close contact with each other.

Then, in the present invention, using the ornamental base material provided with the fixing projection having the cut-in recessed portion of the skin, in order to make the trim surface material stick into the fixing projection by the pressure of the resin foamed during molding, The bond between the trim skin material and the ornament base material can be strengthened.

In the above-mentioned embodiment, when the ornament base material is arranged on the ornament receiving surface and the positioning rib, the ornament base material is easily arranged at a predetermined position, and when the ornament cloth is a decorative cloth, it has a beautiful finish. Can be done. When the ornament base material is a steel plate or a hard synthetic resin, it is convenient that the fixing projection can be easily integrally formed with the base material.

[Brief description of drawings]

1 to 11 show an embodiment of the present invention, and FIG. 1 is a perspective view of a door trim with an ornament,
Fig. 2 is a perspective view of an ornament base material, and Fig. 3 is an ornament base material whose outer surface is covered with the ornament. Fig. 2 III-I
A sectional view of a portion corresponding to line II, FIG. 4 is a perspective view of a forming die for vacuum forming, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG.
The figure shows the process of placing the trim skin material on the molding die.
The figure shows the molding process of the trim skin material, Fig. 8 shows the process of supplying the expandable resin, Fig. 9 shows the process of forming the expandable resin, and Fig. 10 shows an enlarged view of the chain line frame X in Fig. 9. FIG. 11 is an enlarged sectional view of a main part of the molded trim board. FIG. 12 is a conventional view with an ornament attached, and FIG. 13 is a conventional view with an ornament attached. 1 ... Door trim 2 ... Trim skin material 3 ... Elastic layer 4 ... Ornament 5 ... Ornament base material 6 ... Fixing projection 7 ... Mold

Claims (5)

[Claims] 1. A method for molding a door trim in which an ornament having a back surface supported by an ornament base material is attached to an outer surface of a molding skin with the ornament exposed, and an elastic layer is laminated and adhered to the back surface of the molding skin. In the predetermined portion of the vacuum moldable mold, at least the outer surface is covered with ornament, and an ornamental base material having a predetermined number of fixing protrusions having a cut-in concave portion of the skin on a predetermined portion of the back surface is provided. It is characterized in that the fixing projections are arranged on the inner side, the trim skin is arranged on this and vacuum molding is performed, and then the molding portion on the back surface of the molding skin is filled with a foamable synthetic resin material and foamed. Door trim molding method with ornaments. 2. A molding die comprises an upper die and a lower die, and a molding portion formed by both the die is provided with an ornament receiving surface and a positioning rib for arranging an ornament base material having at least an outer surface covered with an ornament. A method for molding a door trim with an ornament according to claim 1, wherein a door trim is used. 3. The ornament is a decorative cloth such as a fabric, and the outer surface of the decorative base material is covered and the outer peripheral portion of the decorative base material is bent to the back surface side of the ornamental base material. The method for forming a door trim with an ornament according to item 1. 4. The method for forming a door trim with an ornament according to claim 1, wherein the ornament base material is made of a steel plate, and the fixing projections are formed in a hook shape by being cut and raised. 5. The method for molding a door trim with ornament according to claim 1, wherein the ornament base material is made of a hard synthetic resin, and the fixing projections are integrally molded.