JPS6110442A - Composite resin molded shape and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field> The present invention relates to a synthetic resin comprising a skin made of a soft sheet and a base made of synthetic resin, the ears of the skin being bent and fixed to the back side of the base. Molded products and methods for producing the same Molded products to which the present invention can be applied include vehicle interior products such as pillar garnishes, consoles, door trims, and claslers, and furniture products such as chairs.

<Prior Art> A conventional manufacturing method for a type 2 composite resin molded product is as follows, for example, in the case of a decorative plate 41 for an automobile interior as shown in FIG.

(i) As shown in FIG. 8, the cavity surface of the female mold 51 (
A soft sheet S is stretched over the PL surface 52 so that the front side is in contact with the female die 51. The soft sheet 53 is fed out by a roll 54
The paper is fed out with a constant tension, and the feeding end is fixed to a stopper roll 55. Here, an adhesive is usually applied to the back side of the soft sheet S, but when it is made of the same type of material as the base material and is integrated with the base body by heat fusion etc. at the same time as the base body molding described below,
Application of the adhesive is not necessary. In addition, the soft sheet usually does not have the ability to retain its shape at room temperature. The soft sheet material 4 is not particularly limited, but may include PVC, PP, PE,
In addition to thermoplastic sheets (including foamed sheets) such as polyurethane sheets, coated fabrics such as PVC leather, PVC sponge leather, nylon coated fabrics, and urethane coated fabrics, as well as nonwoven fabrics and woven fabrics can be used.

(ii) As shown in FIG. 9, a synthetic resin material is injected into the cavity formed by fitting the female die 51 and the male die 56 by injection, transfer, etc. to form the base body 42, and at the same time, a soft sheet is formed. , that is, the skin 43 is integrated with the base body 42. Here, as the synthetic resin material, in addition to PvC, PP, and PE, which correspond to the above-mentioned sheet materials, ABS, Pro,
Examples include hard or semi-hard thermoplastic resins such as polyamide.

(iii) Cut the soft sheet S on both sides of the mold 51, 56 to form ears 44 in the skin 43 as shown in FIG.
Regarding the molded product 41 having on both sides, the ear portions 44
is bent and fixed to the back side of the base body 42.

This bending and fixing work is usually done manually by gluing or heat welding, but since the ears 44 are soft and do not have the ability to retain their shape, the ends of the ears are pressed down while the ears are stretched. It is troublesome to fix the cover with a screw, and moreover, the finish is likely to have poor appearance, such as wrinkles, especially at the part that wraps around to the back side of the skin, that is, the bent part B.

<Objective of the Invention> In view of the above, the present invention improves the workability when bending and fixing the ears in the skin made of a soft sheet.
Moreover, it is an object of the present invention to provide a composite resin molded product that has a uniform and good finished appearance.

Another object of the present invention is to provide a method that does not increase the number of man-hours when manufacturing a bipedal composite resin molded product.

<Summary of the Invention> The present invention provides a composite resin molded product comprising a skin made of a soft sheet and a base made of synthetic resin, the ears of the skin being bent and fixed to the back side of the base, and a method for manufacturing the same. The structure is characterized in that the rigid member is integrated along the edge of the ear part of the skin, and that the molding and integration of the rigid member are performed at the same time as the base molding. Detailed Description Figures 1 and 2 show an embodiment of the present invention. The decorative plate (composite resin molded product) l of this embodiment has a skin 3 made of a soft sheet and a skin 3 made of a synthetic resin, as in the conventional case. It consists of a base body 2, and ears 4 on the skin are bent and fixed to the back side of the base body 2.

Here, on the back side of the bipedal ear part 4, a strip plate (rigid member) 6 to which a base body and a hinge H are connected is integrated along the edge of the ear part.

The connecting side end faces of each of the strip plate 6 and the base body 2 are cut obliquely so that the end faces can butt against each other when the lug portion 4 is bent toward the back side of the base body. The end faces are joined to each other by adhesion or heat welding.

The manufacturing method of this embodiment is the same as the conventional one, but as shown in FIG. Do it at the same time. Note that the separately molded strip plates 6 may be integrated by adhesion or heat welding, but this increases the number of manufacturing steps. Furthermore, when the ear portion 4 is bent and fixed to the back side of the base 2, the ear portion 4 is given shape retention ability by the band plate 6, so the edge portion of the ear portion can be held down while the ear portion 4 is stretched. This can be easily done with a jig, etc. Furthermore, 1
Since the first part 4 is bent and fixed in a state where it is stretched uniformly over the entire length, appearance defects such as wrinkles are less likely to occur in the bent part B.

4-5 show other embodiments of the invention. The basic structure and manufacturing method are the same as the plaque shown in Figures 1 and 2, but
The method of fixing the ears is different. A square bar (rigid member) 16 is integrated with the front side of the ear part 14 along the edge of the ear part, and engaged holes 17 are provided at predetermined intervals inside the square bar 16, and engaged holes 17 are provided on the front side of the other base body 12. In the case of this embodiment, in which an engaging claw 18 is provided protrudingly in correspondence with the mating hole 17, the ear portion 4 is fixed by grasping the end of the ear portion via the square rod 16, and inserting the engaged portion. This is done by engaging the engaging claw 18 in the matching hole 17, which eliminates the need for adhesive application and heating for welding, further improving the fixing workability.

FIGS. 6 and 7 show still another embodiment of the present invention. This embodiment has the same basic structure and manufacturing method as the decorative plate shown in FIGS. 1 and 2, but differs in the method of fixing the ears. A plurality of round rods 26 are discontinuously integrated into the front side of the ear portion 24 along the edge of the ear portion, and grooves are formed on the back surface of the base body 22 to form tapered pushing grooves 27 corresponding to the round rods 26. In the case of this embodiment in which the forming wall 28 is erected, the ear portion 24 is pushed in 127
The ear can be fixed by being pushed in via the round rod 26, and for the same reason as in the above embodiment, the workability of fixing the ear is further improved.

In addition, although the rigid member 16.26 in the above two embodiments (FIGS. 4-5 and 6-7) is separated from the base body 12.22, a gate for molding the rigid member is separately provided in the mold. For example, the rigid member can be easily molded at the same time as the base body. In addition, rigid member 1
The outer edge of 6.26 need not coincide with the edge of the ear as shown in the figure, but may be slightly inside or outside as long as it is along the edge of the ear.

<Effects of the Invention> (a) In the composite resin molded product of the present invention, a rigid member is integrated into the ear along the edge of the ear in the epidermis, and the ear (at least the edge of the ear) has the ability to retain its shape. has. Therefore, (1) the edge of the ear can be easily held down while the ear is stretched, and the workability of bending and fixing the ear on the back side of the base body is improved.

(2) The ears can be fixed while being stretched uniformly over substantially the entire length in the longitudinal direction, and appearance defects such as wrinkles are less likely to occur at the bent portions, that is, the finished appearance of the molded product is uniform and beautiful.

(b) In the method for manufacturing a composite resin molded product of the present invention, the rigid member to be integrated into the ear portion is molded and integrated into the skin at the same time as base molding, which increases the number of manufacturing steps for integrating the rigid member. do not.

[Brief explanation of drawings]

1 to 7 show the present invention, FIG. 1 is a perspective view of the back side of the molded product of one embodiment before fixing the ears, and FIG. 2 shows the molded product of FIG. 1 after the ears are bent and fixed. 3 is a schematic cross-sectional view of the mold used in manufacturing the molded product shown in FIG. 1; FIG. 4 is a partial perspective view of the rear side of the molded product of another example before fixing the ears; FIG. 5 is a half-end view of the molded product shown in FIG. 4 after bending and fixing the ears, FIG. 6 is a perspective view of the back side of the molded product of another embodiment before the ears are fixed, and FIG. 7 is a half-end view of the molded product of FIG.
A half-end view of the molded product shown in the figure after bending and fixing the ear part, No. 8~
Fig. 9 shows a conventional mold used for manufacturing composite resin molded products, Fig. 8 is a schematic cross-sectional view when the mold is opened, Fig. 9 is a schematic cross-sectional view when the mold is closed, and Fig. 10 is a schematic cross-sectional view of molds 8 to 9. FIG. 11 is an end view of the molded product molded with the mold shown in the figure before the ear is fixed, and FIG. 11 is an end view of the molded product after the ear is fixed. 1.11, 21.41... Decorative plate (composite resin molded product)
, 2, 12, 22.42...substrate, 3, 13° 23.
43... Epidermis, 4, 14, 24.44... Ear part 16
... Band plate (rigid member), 16... Square bar (rigid member)
, 26... Round bar (rigid member), B... Bent part, S...
...Soft sheet. Patent application Toyoda Gosei Co., Ltd. Figure 10 Figure 11

Claims (1)

[Scope of Claims] 1. A composite resin molded product comprising a skin made of a soft sheet and a base made of synthetic resin, and the ears of the skin are bent and fixed to the back side of the base, comprising: A composite resin molded product characterized in that a rigid member is integrated into the ear along the edge of the ear in the epidermis. 2. A method for manufacturing a composite resin molded product, in which a soft sheet skin is integrated with a synthetic resin base at the same time as the base is molded, and then the ears of the skin are bent and fixed to the back side of the base, A method for manufacturing a composite resin molded product, characterized in that when integrating a rigid member into an ear along the edge of the outer skin, the rigid member is molded and integrated at the same time as the base is molded.