JP2826463B2 - A method for displaying three-dimensional decoration on a resin-coated eyeglass vine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying three-dimensional decoration on a resin-coated eyeglass vine, which applies three-dimensional decoration to an appropriate portion of the surface.

[0002]

2. Description of the Related Art A conventional resin-coated eyeglass vine obtained by coating a core metal with a resin coating material,
The surface was smooth, and its decoration was intended to impart a change in color surface only by using a colored resin or applying an electrodeposition coating.

[0003] In some cases, attempts have been made to impart an uneven pattern to the surface by using an engraving machine, but this requires a lot of trouble and time, and raises the production cost. Therefore, it was not practical.

[0004] In recent years, the fashionability of eyeglasses has become extremely sophisticated, and even with eyeglasses, high value-added decorations have been demanded.

An object of the present invention is to provide a method of displaying three-dimensional decoration in a resin-coated eyeglass vine which can meet such a demand.

[0006]

In order to solve the above problems, the present invention employs the following means. That is, the method of displaying three-dimensional decoration in the resin-coated spectacle vine according to the present invention (hereinafter referred to as a method) is a method of applying three-dimensional decoration to a spectacle vine obtained by resin-coating a core metal. Is used, and a mold composed of a lower mold that forms the back surface of the eyeglass vine is used. The two dies, when closed, form a receiving portion having one end opened in the longitudinal direction, and at least the lower die is provided with a concave portion and / or a protrusion at the bottom of the die hole. Is provided. In the lower mold cavity,
The lower part of the coating material in the form of a rod made of resin, which has been heated to a softened state as required, is put in, and a part of the coating material is formed into a decoration forming part by the embossing action of the two molds accompanying the mold closing thereafter. The core metal is deformed so as to match, and in this state, a core metal is pushed into the coating material in the housing portion in the axial direction through the opening of the housing portion.

[0007] In the above method, when a decoration forming portion comprising a concave portion is provided on the bottom portion of the mold hole, a bulging portion is provided in a portion of the covering material facing the decorative forming portion, in accordance with the shape of the concave portion. Good to keep.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a mold 1. The mold 1 is composed of a lower mold 2 forming a surface portion of a spectacle temple and an upper mold 3 moving up and down to form a back portion of the spectacle temple. By closing the mold, as shown in FIG. An accommodating portion 5 having an opening 4 at one end in the length direction.
To form

In the present embodiment, the lower mold 2 is formed to be slightly longer than the upper mold 3 and protrudes from the opening end of the housing 5. In addition, the bottom portion 7 of the mold hole 6 of the lower mold 2 has
As shown in FIG. 3, trapezoidal concave portions 10, 10 that are adjacent to each other across the partition wall 9 on the opening side of the storage portion 5 and that are long in the length direction of the storage portion 5, and provided on the bottom surface of each concave portion. A decoration forming part 12 is provided which is composed of a plurality of groove-shaped concave parts 11 extending in the concave part length direction. Also, a decoration forming part 12 composed of a plurality of groove-shaped recesses 17 long in the longitudinal direction of the accommodation part is provided on the bottom side (top surface part) 15 of the mold hole 13 of the upper die 3 on the opening side of the accommodation part. Become.

FIG. 4 exemplifies a metal core, and the front end 1 of the metal core 19 is shown.
The hinge piece 20 is soldered slightly inward from 9a. The hinge piece may be formed integrally with the metal core. FIG. 5 shows a coating material. The covering material 21 is in the form of a rod made of a resin (including various synthetic resins) forming the outer shape of the covering portion of the resin-coated eyeglass temple 33 shown in FIG. Its length is formed slightly longer than the length of the cored bar, and is substantially equal to the length of the lower mold hole 6. In addition, the thickness is formed to be slightly thicker than the vertical thickness of the housing portion so that the embossing action as described later occurs. The pedestal 23 of the hinge piece 20 is provided on the back surface (upper surface in FIG. 5) of the front end portion.
Is provided. Further, a portion of the surface portion (the lower surface portion in FIGS. 5 and 6) of the covering material 21 facing the lower decoration forming portion 12 a and the covering material 21.
A bulging portion 26 is formed in a portion of the back surface portion (the top surface portion in FIG. 5) facing the upper decoration forming portion 12b so as to roughly match the shape of the concave portion.

The procedure for coating the core 19 with resin using the mold 1 having such a configuration will be described with reference to FIGS. First,
After heating the coating material 21 to a softened state by heating as necessary,
By aligning the bulging portion with the corresponding decoration forming portion, FIG.
As shown in FIG.
In the mold cavity 6 described above. After that, the coating material 21 is deformed as shown in FIG. 10 by the embossing action of both dies accompanying the closing of the upper die 3 and the lower die 2, and a part of the material is removed from the upper and lower decoration forming parts 12b, It is deformed to match the form of 12b.

Thereafter, as shown in FIG. 8, the core 19 is placed on the upper surface 29 of the metal core receiving base 27 connected to the open end of the mold 1.
The rear end 30 is placed toward the opening end of the mold 1.
The height of the core metal 19 in this mounted state is set so as to be substantially at the center of the coating material 21 in the thickness direction. After that, the holding metal 31 is juxtaposed in the length direction of the mandrel and the mandrel 1 is pressed.
The core metal 19, which has been heated to a required temperature by the heater while pressing 9, is moved toward the coating material 21 by the pushing member 32. At that time, the holding member 31 is sequentially raised so as not to abut the hinge piece 20 and the pushing member 32.

By this movement, the core metal 19 is pushed into the covering material 21 accommodated in the accommodating portion 5, and the hinge piece 20 is not abutted against the upper mold 3 as shown in FIG. One pedestal 23 fits in the notch 25.

As shown in FIGS. 9-10, after the core metal 19 is completely inserted, the mold 1 is opened, and the eyeglass temple 33 shown in FIG. 11 is obtained. As shown in FIG. 12, a three-dimensional decorative part having a split groove 34 formed at the center and a stripe pattern 36 formed on the surfaces of the bulging parts 35, 35 on both sides thereof, as shown in FIG. 37 are formed. As shown in FIG. 13, a three-dimensional decorative portion 37 having a stripe pattern 39 formed on the front surface is also formed on the rear surface side. As shown in FIG. 14, for example, a metal decorative piece 40 can be fitted and fixed in the split groove 33. FIG. 13 shows an eyeglass temple formed by cutting a front end portion of a cored bar and a front end portion of a coating material at a brazing portion of a hinge piece. This cutting line 41 is shown by a dashed line in FIG.

In the above method, the decoration forming portion may be provided only on the lower mold. FIG. 15 shows a case in which the decoration forming part 12 as a protruding part is provided on the lower mold 2 forming the surface of the eyeglasses vine. In this case, a three-dimensional decoration part as a concave part is formed. The decoration forming part as this protruding part,
As shown by a dashed line in FIG. Further, a decoration forming portion formed by combining the decoration forming portion as the projecting portion and the decoration forming portion as the concave portion may be provided in the mold.

In the method according to the present invention, when the decoration forming portion is a relatively shallow concave portion, the coating material may be formed to be slightly thicker even if the bulging portion is not provided. The required portion of the material can be deformed to match the configuration of the decoration formation.

In the method according to the present invention, the hinge piece is
As shown in FIG. 4, since the brazing is performed near the core end,
Even if the covering material is not provided with a cutout for introducing the hinged seat plate, the softened covering material can be cut open to allow the seat plate to enter the end portion of the covering material. Of course, it is preferable to provide a notch because the seat plate can be smoothly introduced. FIG.
Shows another embodiment in which such a notch is not provided in the covering material, and the thick wide piece 4 provided with the hinge piece 20 is shown in FIG.
A metal core 19 having a bar-shaped portion 43 protruding from the rear end of the second metal 2 is used.
The rod-shaped portion 43 is pushed into the coating material 21, and the end portion 45 of the coating material and the end portion 46 of the thick wide piece come into contact with each other.

[0018]

According to the present invention, the three-dimensional decoration can be easily and inexpensively formed on the surface of the eyeglass vine. Therefore, according to the present invention, unlike a conventional resin-coated eyeglass vine whose surface is smooth and only a colored pattern is expressed at best, a high value-added eyeglass vine having a large decorative effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a lower mold 2 and an upper mold 3;

FIG. 2 is a longitudinal sectional view showing a closed state of upper and lower molds.

FIG. 3 is a cross-sectional view showing a closed state of upper and lower molds.

FIG. 4 is a perspective view showing a core bar to which hinge pieces are brazed.

FIG. 5 is a perspective view showing a covering material.

FIG. 6 is a perspective view showing a surface side of a coating material.

FIG. 7 is a cross-sectional view showing a state in which a coating material is accommodated in a lower mold hole.

FIG. 8 is an explanatory diagram illustrating an example of a unit for inserting a core into a covering material held in a mold.

FIG. 9 is a cross-sectional view showing a state in which a core is pressed into a coating material held in a mold.

FIG. 10 is a cross-sectional view showing a state in which a core is inserted into a coating material held in a mold.

FIG. 11 is a side view showing a resin-coated eyeglass temple.

FIG. 12 is a perspective view showing a three-dimensional decorative portion formed on the front side of the resin-coated eyeglass vine.

FIG. 13 is a perspective view showing a three-dimensional decorative portion formed on the back side of the resin-coated eyeglass vine.

FIG. 14 is a cross-sectional view showing a state where a decorative piece is fitted and fixed in a split groove formed in a three-dimensional decorative portion on the front surface side.

FIG. 15 is a cross-sectional view showing a case in which a decoration forming portion as a protruding portion is provided on a lower mold.

FIG. 16 is a side view showing another embodiment of a resin-coated eyeglass vine provided with three-dimensional decoration.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mold 2 lower mold 3 upper mold 5 accommodation section 6 mold hole 7 bottom of mold hole 12 decoration forming section 13 upper mold hole 15 bottom of mold hole 19 core metal 20 hinge piece 21 covering material 26 bulging section 33 Glasses vine

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) G02C 5/00-5/20 G02C 11/02 B29C 59/02 B29D 12/02

Claims (2)

(57) [Claims] 1. A method for applying a three-dimensional decoration to a spectacle vine coated with a resin core, comprising a lower mold for forming a surface portion of the spectacle vine and an upper mold for forming a back surface portion of the spectacle vine. And both molds, by their closure,
It shall form a housing part whose one end in the longitudinal direction is open,
At least with respect to the lower mold, a decoration forming portion including a concave portion and / or a protrusion is provided at a required portion of the bottom portion of the mold hole, and the mold hole of the lower mold is heated to a softened state as required. The lower part of the coating material in the form of a rod made of resin is placed in the lower part of the coating material, and a part of the coating material is deformed so as to conform to the form of the decoration forming part by the stamping action of both dies accompanying the closing of the mold. A method of displaying three-dimensional decoration in a resin-coated eyeglass vine, wherein a core metal is pushed into the covering material in the housing portion in the axial direction through an opening of the housing portion. 2. In the case where a decoration forming portion formed of a concave portion is provided on the bottom portion of the mold hole, a bulging portion is provided in a portion of the covering material facing the decoration forming portion, substantially in accordance with the shape of the concave portion. The method for displaying three-dimensional decoration in a resin-coated eyeglass vine according to claim 1, wherein: