JPH07261131A - Ornamental parts for frame of glasses and its production - Google Patents

Abstract

PURPOSE:To enable the production in a small lot, to produce parts having a three-dimensional shape with multiple colors and to enable combination with metal by injecting an epoxy resin, urethane, polyester or the like into a silicone- based die or resin die and hardening the resin into a three-dimensional shape. CONSTITUTION:The ornamental parts are produced by injecting the material into a die. The die used is not a metal die but a silicone-based or resin die. The material to be injected is an epoxy resin, urethane, polyester or a special alloy having a low melting point which melts at 150-200 deg.C. In the production process, a master die 7 of a three-dimensional shape having a rugged surface is disposed in a frame 8 filled with silicone rubber 9 and then heated and pressurized. The hardened silicone die 10 is taken out from the frame 8 and cut at the center. The master die 7 is taken out from the cut silicone die 10. Then, the silicone die 10 is again laminated, into which an epoxy resin is injected. After the epoxy resin is hardened, the silicone die 10 is separated to take out the hardened epoxy resin plate, namely, the ornamental part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative part for an eyeglass frame and a method for manufacturing the same, and particularly to a decorative part having a three-dimensional solid shape mainly made of resin.

[0002]

2. Description of the Related Art A spectacle frame is a kind of tool for holding a predetermined lens, but it is required to be decorative because it is worn on the face. That is, it is important that the weight is small and that it does not get tired even if it is worn for a long time, but it must be a frame that looks good when worn on the face, and the frame functions as one ornament. Will be required.

As seen in recent metal frames,
A slim frame for the purpose of weight reduction may itself have a decorative property, but various measures such as plating and printing on the surface of the frame and attachment of parts have been made. The present invention improves the decorativeness of the spectacle frame by adhering the parts, but of course, there are many conventional ones that aim at the decorative effect by adhering or attaching the parts.

For example, by forming a recess in a part of the frame,
There is a case where a decorative component obtained by pouring resin into the recess and cured, or a component molded by injection is bonded, and further, a metal piece is bonded. Among these decorative parts, even if a resin is poured into the recesses to form them, they are merely flat plate-shaped pieces,
Further, in the case of a metal piece, it is common to form a pattern or color on the surface, and it is not easy to make the surface uneven. On the other hand, the resin molded part can be formed in an appropriate shape. However, injection molding requires a molding die, must produce a large number of parts of the same shape, and it is actually impossible to target a small number of parts.

Furthermore, an injection-molded part can only be a single-color part if its surface is not colored. Of course, two or three colors of resin may be mixed and molded, but the color pattern formed by the mixed resin is random and the desired pattern cannot be formed.

[0006]

As described above, the decorative parts attached to the spectacle frame have the above problems. The problems to be solved by the present invention are these problems, which can be applied to small rods, are decorative parts having a three-dimensional shape, and can be formed in a plurality of colors. Provided is a decorative component that can be configured by a combination of the above and a manufacturing method thereof.

[0007]

The decorative component according to the present invention is constructed so that it can accommodate a small rod, and for that purpose, the decorative component is manufactured by pouring into a mold. However, the mold is not made of metal, but a silicon-based mold or a resin mold is used, and as an injection material, epoxy resin, urethane, polyester, or a low melting point special alloy that melts at 150 ° C to 200 ° C is used. It will be molded by injecting resin into a silicon mold of a predetermined shape and curing it, but in this case, if a resin of multiple colors is used as the resin to be injected sequentially, a predetermined pattern will be formed. I can.

Further, in this case, if metal pieces, jewels, etc. are put in the mold, they are placed in a state of being embedded in the resin. Furthermore, in injection molding it must be a thermoplastic resin,
In the present invention, a thermosetting resin, a room temperature curable resin, a UV resin which is cured by ultraviolet rays, or the like can be used. Embodiments according to the present invention will be described below in detail with reference to the drawings.

[0009]

FIG. 1 shows an embodiment in which the decorative part of the present invention is attached to the outer surface of the vine 1. The structure of the spectacle frame is the same as the conventional one, and the vine 1 is foldably connected to the armature 3 brazed to the rim 2 via the hinge 4. 5 is a decorative component which is a target of the present invention,
A shallow groove 6 is formed on the outer surface of the temple 1, and a decorative component 5 is fitted and attached to the groove 6. Although the surface of the decorative component 5 shown in the figure is represented as a flat surface, it actually has a three-dimensional shape with irregularities. The decorative part may be attached not only to the temple 1 but also to the connecting plate of the armor 3 and both rims 2 and 2.

By the way, the decorative component 5 is formed by using an epoxy resin, urethane or the like, and is sometimes made of a low melting point special alloy. The present invention employs a manufacturing process capable of coping with even a very small amount of decorative parts. For that purpose, a silicon-based mold is used to inject a liquid resin into the mold to cure it. The above resin is not a thermoplastic resin used for injection molding, but a thermosetting resin or a room temperature curable resin is used. A UV resin that is injected into the mold to cure by standing or heating, or UV curing May be used.

The silicon mold is manufactured by making a predetermined decorative part as a master mold, and is made by using this master mold. Its outline is shown in FIG. (A) shows the original mold 7 which is a decorative component. The surface has an uneven three-dimensional shape. (B) is a step in which the original mold 7 is placed in the frame 8 containing the silicone rubber 9 and pressed and heated. However, there are various other methods of manufacturing the silicon mold, and the silicon mold is not limited to this. Liquid silicon may be injected into the mold and cured. (C) is a step of taking out the cured silicon mold 10 from the frame 8 and cutting the center into a circle. In (d), the master mold 7 is taken out from the silicon mold 10 that has been sliced. In (e), the silicon mold 10 from which the original mold has been taken out is again placed on top of it and epoxy resin is injected. In (f), after the injected epoxy resin is cured, the silicon mold 10 is separated, and the cured epoxy resin plate, that is, the decorative component 5 is taken out. Since the silicone mold is flexible and soft, the molded decorative parts can be easily taken out.

What is injected into the silicon mold 10 is not limited to the epoxy resin and may be a low melting point metal. Also, the shape of the decorative component 5 is not a flat plate having unevenness on the surface,
Three-dimensional parts can be manufactured in the same way. FIG. 4 is a specific example of a hemispherical decorative component. This decorative component is formed by coating a hemispherical resin body 11 with a metal ring 12, and the metal ring 12 is a resin body 1.
It is fixed without adhering to 1. That is, by injecting the resin into the silicon mold and arranging the metal ring 12 in the mold at the same time, the resin body 11 is partially embedded.

A jewel can be embedded in the surface of the resin body 11 in place of the metal ring 12 and is manufactured in the same manner as in the case of the metal ring. As described above, the decorative component according to the present invention has a three-dimensional shape, and the following effects can be obtained.

[0014]

The present invention is a decorative part having a three-dimensional solid shape, and has a higher decorative effect than a flat decorative part, and the appearance of the spectacle frame is further improved, resulting in a higher-grade frame. Besides, instead of injection molded three-dimensional parts,
It is manufactured by injecting resin etc. into the silicon mold,
By gradually changing the color of the injected resin, it becomes a part having a pattern. This point is also a decorative component that has not existed in the past, and can exhibit a decorative effect that fits the spectacle frame.

On the other hand, since the silicon mold can be easily manufactured with the original mold of a predetermined shape, even a small amount of parts can be manufactured at low cost, and as a decorative means for today's diversified spectacle frames. Optimal.

[Brief description of drawings]

FIG. 1 is an example of a case where a decorative component is attached to a temple of an eyeglass frame.

FIG. 2 is an enlarged view of part A in FIG.

FIG. 3 is a process of manufacturing the decorative component of the present invention.

FIG. 4 is another specific example of the decorative component of the present invention.

[Explanation of symbols]

 1 Crane 2 Rim 3 Yoroi 4 Hinge 5 Decorative Parts 6 Recessed Groove 7 Original Model 8 Frame 9 Silicon Rubber 10 Silicon Model 11 Resin Body 12 Metal Ring

Claims (5)

[Claims] 1. A decorative part attached to the surface of a spectacle frame, wherein the decorative part is formed into a three-dimensional solid shape obtained by injecting epoxy resin, urethane, polyester or the like into a silicone type or a resin type and curing the same. A decorative component for the characteristic eyeglass frame. 2. A decorative part attached to the surface of a spectacle frame, wherein the decorative part has a three-dimensional solid shape obtained by injecting epoxy resin, urethane, polyester or the like into a silicon-based mold or a resin mold and curing the molded product. A decorative component for an eyeglass frame, which is characterized by being made of colored resin. 3. A decorative component attached to the surface of an eyeglass frame, wherein the decorative component has a three-dimensional three-dimensional shape obtained by injecting epoxy resin, urethane, polyester, or the like into a silicon-based mold or a resin mold and curing the same. A decorative part for eyeglass frames, which is characterized by placing metal pieces and jewelry in a silicon mold and molding them at the same time. 4. A method for molding a decorative part that adheres to the surface of an eyeglass frame, wherein a mold having the same shape as that of the decorative part is placed in a frame, silicon rubber is injected, and pressure and heat are applied to the frame. A characteristic is that a cured silicon rubber is taken out and divided into a plurality of pieces to form a silicon mold, and further, the above-mentioned original mold is taken out from the silicon mold and a resin is injected into the silicon mold to be cured to make a part having a predetermined shape Of manufacturing decorative parts for eyeglass frames. 5. A method for molding a decorative part attached to the surface of a spectacle frame, wherein a mold having the same shape as that of the decorative part is placed in a frame, liquid silicon is injected into the frame and cured, and then cured from the frame. Glasses characterized in that a silicon mold is formed by taking out the obtained silicon and dividing it into a plurality of pieces, and further taking out the original mold from the silicon mold, injecting a resin into the silicon mold and curing it to make a component of a predetermined shape. Manufacturing method for frame decorative parts.