JP2737831B2 - Resin emblem plate and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a resin emblem plate and a method for manufacturing the same.

[0002]

2. Description of the Related Art A resin emblem plate used for a door of an electric refrigerator or a nameplate at the top of a shift lever of a passenger car gives a sense of luxury and added value to a main body product to which the resin emblem plate is attached due to its unique appearance. , Bringing satisfaction to buyers. Conventionally, such a resin emblem plate (hereinafter referred to as “emblem plate”) is manufactured by a potting method. Here, the potting method will be briefly described.

First, an uncured resin is poured onto a metal plate such as aluminum on which a company name, a logo, a model number, a pattern, etc. are printed, and the resin is raised using surface tension. Next, the uncured resin is cured by a known technique such as heat or light to complete a resin emblem plate of a product. In this potting method, a drawback is that the state of the product changes if the floatability of the resin is different.

Another drawback of the potting method is that since the surface tension of the resin is used, it is difficult to change the shape of the resin layer or the entire shape, resulting in a so-called "one pattern". No. This means that, for example, the thickness of the resin layer cannot be particularly increased, or the thickness of the resin layer cannot be partially changed, and that it cannot be applied to, for example, a star having an acute angle or a fine shape. And so on.

[0005] Here, in the case of automobiles and home electric appliances in which an emblem plate is often used, they are often sold alongside other products of the same type.
Therefore, if the emblem plate can be used to specialize the impression of the product, it will lead to an increase in the image of the product and, consequently, an increase in sales. Therefore, a manufacturing method capable of obtaining emblem plates of various shapes has been desired.

[0006]

SUMMARY OF THE INVENTION The production method of the present invention comprises:
An object of the present invention is to provide a method of manufacturing an excellent resin emblem plate which has high productivity and allows the shape of a product to be freely changed without affecting the shape of the product by the floatability of a resin used. Another object of the present invention is to provide an emblem plate whose shape can be freely designed.

[0007]

According to a first aspect of the present invention, there is provided a method for manufacturing a resin emblem plate, wherein a binder is attached to a printed substrate. Forming a cavity with the substrate as one surface by pressing and pressing a single mold to the substrate;
After the resin is introduced to form a resin molded portion, and then the piece mold is removed, unnecessary portions of the substrate are cut and removed by press processing.

The resin emblem plate of the present invention solves the above problem.
A binder is attached to the printed substrate, a single mold is pressed and adhered to the substrate to form a cavity having the substrate as one surface, and then a molten resin is introduced into the cavity to form a resin molded portion. Then, after removing the one-sided mold, an unnecessary portion of the substrate is cut and removed by press processing.

Here, if the gate for introducing the molten resin into the cavity is a film gate, when the gate is cut by a subsequent press process, finishing of the gate portion becomes unnecessary, and therefore, the cost of the product can be reduced easily. become. However, when the emblem plate is used by the user, it is not necessary to apply the above-mentioned finishing process when using a frame or semi-buried in the product surface. It is also possible.

In addition, by simultaneously forming a plurality of resin emblem plates by simultaneously forming a plurality of resin molded portions on the substrate, it is possible to increase the manufacturing efficiency and, in turn, reduce the cost.

[0011] The above-mentioned single mold is different from a normal mold and refers to one in which one is released. Although it cannot be used as a molding die as a single substance, it can form a cavity by being press-contacted to the substrate.

In order to form a cavity as described above, it is usually sufficient to use only a single mold and a substrate. Alternatively, another mold (hereinafter, referred to as "the other mold") facing the one mold for securing a spool, a runner, or the like for introducing the resin into the cavity or controlling the temperature. They can be used together. However, the other mold has a simple structure and does not need to form a cavity. In some cases, one other mold can correspond to a plurality of types of single molds.

Here, as the substrate, a metal plate such as aluminum, a resin plate having a metal foil disposed on a surface layer, or the like can be used. When the substrate does not require metallic luster, or for special effects, it can be colored, colorless, or transparent.
It is also possible to use a translucent or opaque resin plate or the like.

Further, a logo, a pattern, etc. such as a company name and a product number are printed on these substrates by a commonly used printing means such as offset printing and screen printing.
Alternatively, a film of polyester or the like on which these are printed may be attached to each other as a substitute for printing. Also, these substrates may be provided with irregularities by embossing or the like. Here, the thickness of the substrate is generally preferably 0.1 mm to 5 mm, depending on the material of the substrate, in consideration of the ease of punching work by final press working.

As the binder, a thermoplastic resin or acrylic rubber which is transparent and has a so-called hot melt property is used. Here, usually, a resin having a lower melting point than the resin forming the resin layer is used.

On the other hand, as a resin forming the resin layer, polystyrene, polycarbonate, or the like having high transparency is usually used.
It is desirable to use an acrylic resin, a methacrylic resin, an acrylonitrile-butadiene-styrene resin (ABS) or the like, but is not limited to a special effect or the like. These resins need to have a melting point or softening point lower than the melting point or softening point when a resin is used for the substrate portion. Alternatively, instead of using a thermoplastic resin as described above, a resin layer may be formed by using a thermosetting resin and then curing the resin after injection, for example, in a cavity. For the purpose of special effects, these resins may contain pigments, dyes, or fillers such as fine resin pieces, crystal pieces, metal pieces, and the like.

The emblem plate may be adhered to various products by applying an adhesive or an adhesive to the back surface. However, it is preferable to perform punching after sticking a double-sided adhesive tape or the like, one side of which is protected with release paper, to the back surface of the substrate before the punching step by pressing, because the productivity of forming the adhesive surface is increased.

[0018]

According to the manufacturing method of the present invention, a binder is adhered to a printed substrate, and a single mold is pressed and adhered to the substrate to form a cavity having the substrate as one surface. After forming the resin molded part by introducing, and then removing the one-sided mold, the unnecessary part of the substrate is cut and removed by press processing, so by selecting the shape of the one-sided mold, the degree of freedom in the shape design of the resin layer, The degree of freedom in the overall shape design has been dramatically improved,
Also, productivity is improved.

Although the present invention uses a single mold as described above, this is simpler than a general mold used in injection molding, and a resin is directly formed on a substrate by the action of a binder. Since the layers are integrally formed, a necessary mold release mechanism is not required in a normal mold, or a very simplified structure is sufficient. Here, even if it is necessary to use the other mold for reasons such as molding, the other mold may have a simple shape without a cavity forming portion. Since the mold can correspond to a plurality of types of single molds, the influence on the manufacturing cost is small.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for manufacturing a resin emblem plate according to the present invention will be described with reference to FIGS. FIG.
Aluminum substrate 1 (thickness 0.3mm) with logo and pattern offset printed on the emblem plate molding area
Is shown. Then, as shown in FIG. 2A, the substrate 1 coated with a hot-melt acrylic adhesive as a binder 2 is set in the other mold 3 '.

The single mold 3 is pressed and brought into close contact with the substrate 1 as described above and clamped to form a cavity 4 with the substrate 1 as one surface (see FIG. 2B). Next, FIG.
As shown in FIG. 5, polystyrene is introduced into the cavity 4 via the runner 5 and the film gate 6, and then cooled to form a resin layer. At this time, the formed resin layer and the substrate 1 are in close contact with each other by the binder 2 described above.

Thereafter, the substrate 1 on which the resin layer has been formed is released, and then necessary portions of the substrate 1 are punched out by a press machine 8 as shown in FIG. The resin emblem plate according to (1) is obtained.

[0023]

According to the method for manufacturing a resin emblem plate of the present invention, the thickness of the resin layer can be freely set, and emblem plates of various forms can be manufactured, thereby improving the appeal. In addition, mass production is possible, and it is easy to increase production efficiency. In addition, since a single mold is used, the mold manufacturing cost can be reduced, and the product production cost can be reduced. Also, when the other mold is used in combination, since the other mold may have a simple shape, the production cost does not increase.

[Brief description of the drawings]

FIG. 1 is a perspective view of a printed substrate.

FIG. 2 is a view showing each step of a manufacturing process of the resin emblem plate of the present invention. (A) Shows before mold clamping. (B) The state after mold clamping is shown. (C) Shows the state after resin filling. (D) Shows the state after release and before press punching.

FIG. 3 is a view showing an example of a resin emblem plate according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed board 2 Binder layer 3 Single mold 3 'Other mold 4 Cavity 5 Runner 6 Gate 7 Resin layer 8 Press machine 8a Cutting blade

Claims (3)

(57) [Claims] In a method of manufacturing a resin emblem plate, a binder is attached to a printed substrate, and a single mold is pressed and adhered to the substrate to form a cavity having the substrate as one surface, A method of manufacturing a resin emblem plate, comprising: introducing a resin to form a resin molded portion; removing the one-piece mold; and cutting and removing unnecessary portions of the substrate by pressing. 2. The film gate according to claim 1, wherein the gate for introducing the molten resin into the cavity is a film gate.
A method for producing the resin emblem plate according to the above. 3. The resin emblem plate according to claim 1, wherein a plurality of resin emblem plates are simultaneously formed by simultaneously forming a plurality of resin molded portions on the substrate. Production method.