JP3321137B2 - Method for forming three-dimensional decoration of resin eyeglass member - 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 forming a three-dimensional decoration of a resin-made spectacle member for forming a three-dimensional decoration on an engraved portion of the resin-made eyeglass member.

[0002]

2. Description of the Related Art As an example of a method for forming a three-dimensional decoration on the surface of a workpiece, a method disclosed in Japanese Patent Application Laid-Open No. 8-229977 has been proposed. In this method, the engraving machine is moved three-dimensionally based on engraving data transmitted from a computer, and a required three-dimensional decoration is milled using an end mill.

[0003]

However, in the case of the above-mentioned milling, the minimum diameter of the end mill is at most 1 because it is necessary to prevent the end mill from being damaged during cutting.
Since mm was the limit, the radius of the bending line became large, and there was a problem that it was difficult to form a delicate three-dimensional decoration having a sharp outline.

[0004] By the way, in recent years, the fashionability and personality of spectacles have become more sophisticated and individualized, and delicate and high value-added three-dimensional decoration has been required for resin spectacle members such as temples of spectacles. However, when a three-dimensional decoration is to be formed by the above-mentioned milling process in which it is difficult to form a sharp contour, such a demand cannot be met. Also, engraving by the milling process requires a lot of time and labor and greatly increases the manufacturing cost. Therefore, as a means for forming a three-dimensional decoration on a resin eyeglass member, it is not practical in terms of cost. Met.

An object of the present invention is to provide a method for forming a three-dimensional decoration of a resin spectacle member which can solve the above problems.

[0006]

In order to solve the above-mentioned problems, the present invention employs the following means. That is, the method for forming a three-dimensional decoration of a resin eyeglass member according to the present invention (hereinafter referred to as a method).
Is a method for forming a three-dimensional decoration of a resin-made eyeglass member, wherein a three-dimensional decoration is formed by performing laser engraving on a part to be engraved of the resin-made eyeglass member while relatively moving a portion irradiated with a laser beam to the engraved part. The resin eyeglass member,
A plurality of resin block pieces are formed by integrally fitting and joining together the resin block pieces joined together as required, and this integration is performed by immersing the resin block piece joints in a solvent. The method is characterized in that the joining portion is melted, and in the solvent, the joining portions are joined at a melted portion.

A more preferred embodiment of the method according to the invention is
A method for forming a three-dimensional decoration of a resin-made eyeglass member, in which a part to be engraved of a resin-made eyeglass member is subjected to laser engraving while relatively moving an irradiation part of a laser beam to the part to be engraved to form a three-dimensional decoration, The resin-made spectacle member is formed by fitting a plurality of resin block pieces as required and bonding together the joined portions of the resin block pieces fitted to each other, and this integration is performed by joining the resin block pieces. The joints are melted by dipping the joints in a solvent, and the joints are melted in the solvent, and the joints of the resin block pieces fitted to each other are pressed into contact with each other. It is characterized in that they are carried out in close contact with each other.

[0008] In each of the above methods, the amount of melting at the time of dissolving the joint of the resin block pieces with a solvent so that a blurred pattern is formed at the bonded and integrated part of the joined resin block pieces. Should be set as required.

In another aspect of the method according to the present invention, a three-dimensional decoration is formed by performing laser engraving on a portion to be engraved of a resin eyeglass member while relatively moving a portion irradiated with a laser beam to the portion to be engraved. A method for forming a three-dimensional decoration of a resin spectacle member, wherein the resin spectacle member is formed by bonding a plurality of resin block pieces as required and bonding joint portions of the resin block pieces fitted together with each other. This integration is performed by dissolving the joints of the resin block pieces with a solvent and joining the joints together. Also, the joints of the fitted resin block pieces are bonded together and integrated. It is characterized in that the amount of dissolution at the time of dissolving the joint of the resin block pieces with a solvent is set as required so that a blurred pattern is formed in the portion.

In each of the above methods, it is preferable that the resin eyeglass member is formed using a laminated sheet material in which resin materials of different colors are laminated and integrated. In each of the above methods, it is preferable that the engraved surface be polished by dissolving the entire surface of the three-dimensional decoration formed by laser engraving or a part of the surface with a solvent.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the method according to the present invention includes various resin eyeglass members 1 as a resin temple 1a, a resin lens holding frame 1b, a modern nose pad, and the like.
The three-dimensional decoration 3 is formed by performing laser engraving for melting and evaporating the material while irradiating the part 2 to be engraved with a laser beam.

FIGS. 2 and 3 illustrate an apparatus 5 for carrying out such a method, in which rails 7 on both sides are located above resin spectacle member 1 placed on a fixed table 6. Bar 9 reciprocatingly guided by, 7
In addition, a laser engraving machine 10 movable in the length direction is provided. The laser engraving machine 10, as shown in FIG.
2 and a nozzle 15 for blowing out an assist gas such as air or carbon dioxide gas to cool the periphery of the engraving section. Based on the engraving data transmitted from the computer, for example, in a horizontal plane It can move vertically and horizontally (X-axis direction and Y-axis direction in FIG. 2),
The moving speed is set to a required constant speed.
The output of the laser beam during this movement is controlled as required based on the engraving data.

The resin eyeglass member 1 is, for example, shown in FIGS.
Are formed as a temple 1a or a lens holding frame 1b using an incombustible resin such as acetate as shown in FIG.
It is manufactured by fitting a plurality of resin block pieces 19 as required and integrating the whole. This integration can be produced, for example, by dissolving the joint 20 of the resin block piece 19 with a solvent and joining the joints to each other. More preferably, it can be manufactured by immersing the joint portion 20 of the resin block piece 19 in a solvent to dissolve the joint portion, and joining the joint portions at a portion where the joint portions are melted in the solvent. More preferably, the joining portion 20 of the resin block piece 19 is immersed in a solvent to dissolve the joining portion, and in the solvent, the joining portions are joined together at a melted portion. It is preferable to employ a manufacturing method in which the joints are pressed into contact with each other to tightly integrate the joints. Then, the close integration is performed after the whole or a part of the resin base material formed by bonding is placed in a state where the resin base material in the clamping die is in a softened state. It is preferable that the surface is pressed from all directions, and at that time, the joints are pressed against each other by the movement of the resin material in the clamping die, so that the press-contacted parts are tightly integrated. In these cases, the amount of melting at the time of dissolving the joint of the resin block pieces with a solvent is set as necessary so that a blurred pattern is formed at the joined and integrated portion of the joined resin block pieces. Good to do.

Since the resin eyeglass member 1 manufactured in this manner has a configuration in which a plurality of resin block pieces 19 are fitted as required, various shapes and sizes of the resin block members 19 and various colored resin members are used. By simply fitting the block pieces together, they can be provided as having a complex and unique design configuration. In this embodiment, as shown in FIG. 6, the resin eyeglass member 1 is made of a resin material 1 of a different color.
8a is laminated into a plurality to form a laminated sheet material 1 which is integrated as a whole.
8 is used.

Now, the method of the present invention will be described as follows, taking as an example the case where a three-dimensional decoration 3 having a sectional shape shown in FIG. This three-dimensional decoration 3
It is formed of an appropriate combination of the deeply carved portion 21 and the shallow carved portion 22 and has a portion (gradation portion) 23 whose depth changes gradually, and is a portion carved deepest (for example, 1.5 to 2 mm). Depth of carving depth) 25
Laser engraving is performed a plurality of times, for example, three times. The number of times of engraving is determined precisely by considering the output of laser beam and engraving depth, resin material, laser beam moving speed (processing speed), etc., without causing excessive melting of resin. Set to be able to.

In this embodiment, it is assumed that the laser engraving is performed on the portion to be laser-engraved at least to the same degree as that of the deepest engraved portion 25 regardless of the engraving depth of the portion. The output of the laser beam at the time of engraving the deepest carved portion is set to a higher value, for example, 50 W, and the output of the laser beam at the time of engraving the carved portion 26 shallower than the above is set at the maximum of the deepest carved portion 25.
Set smaller than. If the output at the shallow engraving depth is set in the same way as the output at the deep engraving depth, the amount of resin melted during laser engraving will be excessive, and the shape of the engraved portion will collapse, The desired laser engraving cannot be performed. Therefore, the output of the laser beam in the part to be carved shallowly,
It is to be set to a smaller required value.
For example, if the output at the deepest carved portion 25 is set to 50 W as described above, the output at the shallower carved portion 26a is not only the resin material, but also the carved depth of the shallow carved portion and the moving speed of the laser beam (processing speed). In consideration of the speed, for example, the output is set to 35% of 70%, and the output of the portion 26b carved shallower than that is set to, for example, 15W of 30%.

However, the three-dimensional decoration 3 is provided on the resin eyeglass member 1.
Is formed, for example, a resin-made spectacle member 1 as a temple 1a having a flat shape is fixed on the fixed table 6 as shown in FIGS. And the head 13
The height of the condensing lens 1 as shown in FIG.
One focal position 27 is set so as to exist on the surface 28 of the engraved portion of the resin eyeglass member. In this state, the head 13 is moved along the X-axis direction and the Y-axis direction in a horizontal plane based on the engraving data transmitted from the computer. With this movement, the head 13 moves sequentially while the output of the laser beam changes as described above. FIG. 8 shows a cross-sectional state in which the first laser engraving of the entire engraved portion 2 is completed.
After that, the second and third laser engravings are performed, and the specified portions (for example, FIG.
(The portions indicated by reference numerals 25, 26a and 26b) are the same over the entire number of laser engravings. FIG. 9 shows a state in which the second laser engraving is completed, and FIG. 7 shows a state in which the final laser engraving is completed, whereby the required three-dimensional decoration 3 is formed. At the time of this laser engraving, the nozzle 1
The ash generated by the engraving is blown off by the assist gas such as air injected from 5 and the engraved portion is instantly cooled. In FIGS. 7 to 9, the surface 28 of the engraved portion before laser engraving is indicated by a dashed line.

The laser engraving is performed in this manner. However, since the focused spot of the laser beam is so small as to be incomparable with a conventional end mill, each part of the engraved part has its own part. Engraving is performed each time with an output set as required according to the engraving depth of the part, and as a result, it is easy to express a smoothly continuous gradation. In the case of expressing gradation, the shallow carved part can be easily engraved at one time, but that part is formed only once with relatively high output, and the subsequent part is carved twice. Considering the case, for example, as shown in FIG.
And the boundary is conspicuous, and a problem that a smoothly continuous decorative surface cannot be formed undesirably occurs.

It is not surprising that the laser engraving of the deepest engraved portion 25 is performed once by increasing the output of the laser beam. However, when laser engraving is performed on a resin, unlike when laser engraving is performed on a metal, the resin is easily melted and thus easily deformed, and cannot be engraved in a desired form. Therefore, in the present embodiment, in consideration of such characteristics of the resin, the output of the laser beam is reduced compared to the case of the metal, and divided into a plurality of times according to the three-dimensional decoration to be formed as described above. And then gradually carving it deeply, eventually forming the required three-dimensional decoration.

In the present embodiment, the resin spectacle member 1 is formed by fitting a plurality of resin block pieces as required and joining together the joining portions 20, 20 of the resin block pieces 19 fitted together. As a result, it is possible to construct eyeglasses having a high value-added design by combining the complex and individual design of the resin eyeglass member 1 with the delicate and complicated three-dimensional decoration.
In particular, when the resin-made eyeglass member 1 is formed using the laminated sheet material 18 in which resin materials 18a of different colors are laminated and integrated, the color change due to the laminated resin material according to the depth of the laser engraving. Can be skillfully utilized for three-dimensional decoration, and a more delicate three-dimensional decoration can be formed.

As shown in FIG. 11, a fogging film 30 is generated on the surface layer of the three-dimensional decoration 3 formed as described above by melting and evaporating the material during laser engraving, and the decorative surface becomes a matte state. Cheap. Therefore, in the present embodiment, as shown in FIG. 12, the fogging film 30 of the entire or a part of the three-dimensional decoration formed by laser engraving is melted with a solvent such as acetone to polish the decoration surface. I have to do that. In addition, since the generated cloudy film itself can be used as a part of three-dimensional decoration, it is not always necessary to dissolve the entire three-dimensional decoration with a solvent,
A cloudy film may be intentionally left.

[Other Embodiments] (1) The method according to the present invention employs a resin material and a three-dimensional decoration form, a depth of engraving, and a relative moving speed (processing speed) of a laser beam of a resin eyeglass member. In consideration of the above, the output of the laser beam can be set as required.

(2) In the method according to the present invention, laser engraving is performed by fixing the output of the laser beam and the focal position of the condenser lens set for the portion to be engraved before the laser engraving is performed. In addition, when the engraving depth is deep, the focal position may be moved deeper into the material as the number of laser engravings advances. This movement may be performed by moving the resin eyeglass member in addition to moving the focal point.

(3) The method according to the present invention is applicable not only to the case where laser engraving is performed on the entire engraved portion with the same number of times, but also to the resin material and the three-dimensional decoration form, the engraving depth, and the laser beam of the resin eyeglass member. In some cases, laser engraving may be performed partially different times in consideration of the relative movement speed (processing speed) of the laser beam.

(4) The method according to the present invention may require only one laser engraving to form a three-dimensional decoration having a small depth.

(5) In the present invention, the relative position of the laser beam irradiation portion with respect to the engraved portion may be adjusted by moving a table on which resin eyeglass members are placed with the head fixed. .

(6) The resin eyeglass member may be formed using a resin material containing an antibacterial agent, a magnetic substance, or the like.

(7) When laser engraving is performed a plurality of times, the output can be changed each time.

[0029]

The present invention has the following excellent effects. (1) The method according to the present invention, when forming a three-dimensional decoration,
Instead of milling using an end mill, etc.
Since a laser engraving means capable of engraving with a minute condensing spot is employed, engraving having a sharp outline can be performed. Therefore, according to the present invention, it is possible to apply a delicate three-dimensional decoration, which cannot be achieved by the engraving means by milling, to the spectacle member made of resin. In addition, unlike conventional milling using an end mill or the like, non-contact processing enables engraving to be performed with high precision without exerting any mechanical force on the material. In addition, there is no problem that the tool is damaged unlike the related art, and the engraving can be performed efficiently in a short time.

(2) In particular, when a resin spectacle member is used in which a plurality of resin block pieces are fitted together as required and the joined portions of the fitted resin block pieces are bonded together and integrated, the shape and size are By combining resin block pieces having various settings and various colors, a resin eyeglass member having a complicated and unique design configuration can be configured. When performing the laser engraving on the resin eyeglass member configured as described above, the design value of the resin eyeglass member itself and the synergistic decorative effect of the three-dimensional decoration by the laser engraving, a high value-added design. It is possible to provide spectacles having.
When the bonding and integration are performed by dissolving the joined portions of the fitted resin block pieces with a solvent and bonding and joining the joined portions together, the joining portions of the resin block pieces are melted with the solvent and joined at the melted portions. In this case, the resin eyeglass member in which the resin block pieces are firmly integrated with each other can be formed easily and at a reduced cost. When the joined portions of the fitted resin block pieces are brought into a press-contact state, it is possible to form a resin-made eyeglass member in which the joined portions are more tightly integrated. When the joint of the resin block pieces is melted with a solvent, by setting the melting amount of the joint as required, it is possible to form a blur pattern on the part where the joints are bonded and integrated, and have a soft taste. It is possible to manufacture a resin-made eyeglass member having a texture.

(3) In particular, when the resin eyeglass member is formed using a laminated sheet material in which resin materials of different colors are laminated and integrated, a color change is given to the three-dimensional decoration according to the engraving depth of the laser engraving. And thus a delicate colored three-dimensional decoration can be formed.

(4) A cloudy film is likely to be formed on the three-dimensional decorative surface immediately after laser engraving due to melting and evaporation of the material during laser engraving. Therefore, it is also desired to remove such a cloudy film and to give gloss to the decorative surface. However, when the cloudy film is removed by mechanical polishing, the decorative surface is easily damaged. Therefore, when removing such a cloudy film by means of dissolving the entire surface of the three-dimensional decoration or a part of the surface thereof with a solvent such as acetone,
The cloudy film can be easily removed without damaging the formed three-dimensional decoration, and the three-dimensional decoration surface can be polished. As a result, the entire three-dimensional decorative surface can be formed as a glossy surface, and a unique design feeling can be provided by a combination of a glossy portion and a matte portion. Note that the degree of gloss can be changed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a three-dimensional decoration formed by a method according to the present invention.

FIG. 2 is a plan view illustrating an apparatus for performing a method according to the present invention.

FIG. 3 is a sectional view showing the configuration of the laser engraving machine together with its operation.

FIG. 4 is a perspective view showing a resin eyeglass member as a temple.

FIG. 5 is a front view showing a resin eyeglass member as a lens holding frame.

FIG. 6 is a cross-sectional view showing a resin eyeglass member formed by using a laminated sheet material formed by laminating and integrating resin materials of different colors.

FIG. 7 is a sectional view showing a three-dimensional decoration formed according to the present invention.

FIG. 8 is a cross-sectional view showing a state where the first laser engraving is completed.

FIG. 9 is a cross-sectional view showing a state where laser engraving of the second face is completed.

FIG. 10 is a cross-sectional view showing a problem when laser engraving is performed while the output is partially stopped.

FIG. 11 is a cross-sectional view showing a cloudy film on a surface portion of the three-dimensional decoration.

FIG. 12 is a cross-sectional view showing a state in which a cloudy film is dissolved with a solvent.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin eyeglass member 2 Engraved part 3 Three-dimensional decoration 10 Laser engraving machine 11 Condensing lens 12 Laser beam 13 Head 15 Nozzle 19 Resin block piece 20 Resin block piece joint 21 Deep carved part 22 Shallow carved part 25 Engrave deepest Part 27 Focus position 30 Cloudy film

Continuation of the front page (56) References JP-A-64-57990 (JP, A) JP-A-10-142559 (JP, A) JP-A-11-235898 (JP, A) JP-A-6-155573 (JP) JP-A-51-98501 (JP, A) JP-A-50-106701 (JP, A) JP-A-10-193894 (JP, A) JP-A-4-336524 (JP, A) 8-176801 (JP, A) Japanese Utility Model 57-70210 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B44C 1/22 B23K 26/00 G02C 5/00 G02C 11 / 02

Claims (6)

(57) [Claims] 1. A three-dimensional decoration forming of a resin spectacle member for forming a three-dimensional decoration by performing laser engraving on a part to be engraved of the resin eyeglass member while relatively moving a portion irradiated with a laser beam to the part to be engraved. The method, wherein the resin eyeglass member requires a plurality of resin block pieces.
Of the resin block pieces fitted together and fitted together
The joints are formed by laminating and joining together.
Of the resin block piece is immersed in the solvent
To dissolve the joint, and in the solvent,
A method of forming a three-dimensional decoration of a resin eyeglass member, wherein the three-dimensional decoration is performed by joining at a portion where the parts are fused with each other . 2. A three-dimensional decoration forming of a resin-made spectacle member for forming a three-dimensional decoration by performing laser engraving on a portion to be engraved of the resin-made spectacle member while relatively moving a portion irradiated with the laser beam to the engraved portion. The method, wherein the resin eyeglass member requires a plurality of resin block pieces.
Of the resin block pieces fitted together and fitted together
The joints are formed by laminating and joining together.
Of the resin block piece is immersed in the solvent
To dissolve the joint, and in the solvent,
After joining with each other at the melting point, the trees fitted to each other
The joints of the resin block pieces are pressed against each other to make the joints tight.
A method of forming a three-dimensional decoration of a resin eyeglass member, wherein the three-dimensional decoration is performed while being integrated . 3. A required amount of melting when dissolving the joints of the resin block pieces with a solvent so that a blurred pattern is formed at the joined and integrated portion of the joined resin block pieces. The method for forming a three-dimensional decoration of a spectacle member made of resin according to claim 1 or 2, wherein the setting is performed. 4. A three-dimensional decoration forming of a resin spectacle member for forming a three-dimensional decoration by performing laser engraving on a portion to be engraved of the resin spectacle member while relatively moving a portion irradiated with a laser beam to the engraved portion. The method, wherein the resin eyeglass member requires a plurality of resin block pieces.
Of the resin block pieces fitted together and fitted together
It is formed integrally bonding the joint cross, this
The joint of the resin block pieces was dissolved with a solvent
And the joints are joined together.
Bonding of bonded resin block pieces to each other
The resin so that a blurred pattern is formed
Requires the amount of melting when dissolving the joints of the block pieces with a solvent
3. A method for forming a three-dimensional decoration of a resin spectacle member, characterized in that: Wherein said resin eyeglass member, resin glasses according to claim 1, characterized in that it is formed by using the laminate sheet material was laminated and integrated resin material different color A method for forming a three-dimensional decoration of a member. 6. The engraved surface according to claim 1 , wherein the entire surface of the three-dimensional decoration formed by laser engraving or a part of the surface layer is dissolved with a solvent to polish the engraved surface. A method for forming a three-dimensional decoration of a resin eyeglass member.