JPH08304742A - Fiber reinforced material for spectacle frame and its production - Google Patents

Abstract

PURPOSE: To obtain a fiber reinforced material for spectacle frames consisting of an integral structure having lightweightness, high strength, high toughness and fashionability by forming high-strength fibers to a braided cord-like structure. CONSTITUTION: The upper lens frame 13a and lower lens frame 14a of the one lens frame part branched from temple connecting parts 11a consisting of the braided cord structures are formed as the braided cord structures and are joined to form a bridge part 15 of the braided cord structure. Another lens frame parts branched from the braided cord structure of the bridge part 15 are formed as the braided cord structures and are joined to form the temple connecting parts 11b of the braided cord structures. As a result, a lens supporting frame material 10 consisting of the braided cord structure is obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to spectacles woven as a braided structure for forming a spectacle frame which is lightweight, has high strength and high toughness, and is functional and excellent in fashionability. The present invention relates to a frame fiber reinforcement and a manufacturing method for weaving the fiber frame reinforcement.

[0002]

2. Description of the Related Art Eyeglasses worn in front of the eye are required to have light weight, high strength, and high toughness in addition to the function of seeing an original object. In addition, aesthetic forms such as shape and color are also important factors in the product. Conventionally, in order to obtain the above-mentioned functions, a relatively lightweight and high-strength resin or a metal such as titanium is used alone or in combination for a spectacle frame which is a main component of spectacles. However, conventional materials have problems that they are not lightweight and do not provide sufficient strength and toughness, and that precision processing such as molding and cutting is difficult. Precise processing to obtain a high design was considered difficult. for that reason,
It is desired to develop a spectacle frame that is lighter, has higher strength and toughness, and is functional and highly fashionable.

[0003]

The technical problem of the present invention is that it has light weight, high strength, high toughness, and is functional.
An object of the present invention is to provide a fiber reinforced material for eyeglass frames, which is also excellent in fashionability, as a braided structure integrally woven using fibers having excellent strength. Another technical problem of the present invention is to solidify with a matrix such as a resin,
It is an object of the present invention to provide a fiber reinforced material for an eyeglass frame having a braided structure which is lightweight, has high strength, high toughness, is functional, and is excellent in fashionability. Still another technical object of the present invention is to form a fiber reinforcement of a braided tissue having an eyeglass frame shape with an integrated frame structure, strengthen the braided tissue in the branching / coalescing portion of the frame structure, An object of the present invention is to provide a fiber reinforced material for eyeglass frames in which the strength of the portion is increased.

Further, another technical problem of the present invention is that the fiber-reinforced material for eyeglass frames to be woven uses a conventionally used braiding machine or obtains a braid structure. It has a braid structure that can be woven with a slight modification to the known braiding device that mechanically performs the required selective movement of the fiber bundles, and therefore it is easy to effectively use the known braiding technology. An object of the present invention is to provide a method for manufacturing a fiber-reinforced material for eyeglass frames that enables weaving.

[0005]

A fiber reinforced material for eyeglass frames of the present invention for solving the above problems is a lens support for eyeglasses, which is made of a fibrous structure woven as a braided structure having an integral structure as a whole. The lens support frame member includes a frame member, and the lens support frame member connects at least both of the temple connecting portions, a pair of lens frame portions including an upper lens frame and a lower lens frame that are connected to the temple connecting portions, and the lens frame portions. And a bridging part which forms a top lens frame and a bottom lens frame of the lens frame part by branching the braid structure from one of the vine connecting parts having the braid structure, and reassembling them. Forming a bridge part as a braid structure, branching the braid structure from the bridge part again to form the upper lens frame and the lower lens frame of the other lens frame part, and further combining the braid structure. The other as an organization Connecting portion is formed that, thereby is characterized in that formed on the lens holding frame shape for the required glasses.

In the branching / merging portion of the braided tissue in the lens supporting frame material, the braided tissue of the branch portion and the trunk portion obtained by joining the branch portions are all of the fibers forming the branch portions. Most of them are woven at least in the tissue of the trunk portion immediately after their merging into the tissue on the side opposite to the branching side of the branch portions, and a part of the fibers is woven in the tissue of the opposite trunk portion. In, the fibers can be included in the fibers that form the outer edge of the tissue to form the tissue.

The method for producing a fiber-reinforced material for eyeglass frames according to the present invention is a method for weaving a lens supporting frame material for eyeglasses as a fibrous structure having a braid-like structure having an integral structure as a whole. Weaving the braided tissue with one of the upper and lower lens frames of the lens frame part branched to the braided tissue from one of the vine connecting parts, and weaving to a length that can hold an eyeglass lens. After weaving, the bridge part is woven and formed as a braid structure by reassembling them, and the braid structure is branched again from this bridge part and the upper lens frame and the lower lens frame of the other lens frame part are braided. After weaving to a length that can hold an eyeglass lens as a tissue, the braid tissue is branched from one vine connecting portion having a braid tissue to form the upper lens frame and the lower lens frame of the lens frame portion, Them again A bridge portion is formed as a braided tissue that has been made into a body, and the braided tissue is branched again from this bridge portion to form the upper lens frame and the lower lens frame of the other lens frame portion, which are further united. Another feature of the present invention is that the other vine connecting portion is formed as a braid structure, and thereby the spectacle lens supporting frame shape is formed.

[0008]

The fiber reinforced material for an eyeglass frame having the above-mentioned structure is formed by branching and merging lightweight and high-strength fibers into a braid at a desired site while organizing them into a braided shape. Since the continuous fibers can be obtained as an integrated tissue without cutting them in the middle, the characteristics of the fiber can be utilized to the maximum extent, and by solidifying this fiber tissue with a matrix such as resin, it is lightweight and highly It is possible to provide a strong and highly tough eyeglass frame. Further, by adopting the braid structure, an appearance utilizing the fiber structure and the pattern can be obtained, and a spectacle frame excellent in fashionability can be obtained.

Further, in the branching / coalescing portion of the braided tissue in the lens supporting frame material, all or most of the fibers that compose each branch portion, at least in the tissue of the trunk portion immediately after the coalescence thereof, are branched. While woven in the tissue on the side opposite to the branching side of the portion, a part of the fiber is included in the tissue constituting the outer edge of the tissue in the tissue of the opposite side trunk portion to be organized, whereby the branch portion The braid in the branching / coalescing part is created by making the structure in which the fibers are arranged in an X shape beyond the branching reference plane of the trunk part (the surface that divides the trunk part by the ratio of the number of fibers forming each branch part). It becomes possible to strengthen the tissue and remarkably increase the tear strength of the branch portion. Furthermore, the fiber reinforcement for eyeglass frames described above,
Using a traditionally used braiding machine, or by making a slight modification to a known braiding device that mechanically performs the selective movement of fiber bundles necessary to obtain a braided tissue. According to the above manufacturing method, the fiber reinforcement for eyeglass frames can be easily woven by effectively utilizing the known braiding technique, and the lens having the integral structure can be obtained because the braided tissue that can be woven is provided. Since it is woven as a supporting frame material, the number of man-hours for joining and processing the parts is small when the spectacle frame is commercialized, and labor can be saved.

[0010]

EXAMPLE FIG. 1 shows the structure of an eyeglass frame formed by solidifying a fiberglass reinforcement material for eyeglass frames according to the present invention with a matrix. The fiber reinforcement material for eyeglass frames constituting this eyeglass frame is It is composed of a lens supporting frame member 10 having a braided structure which is integrally woven integrally, and a pair of temple members 20 and 20 having a similar braided structure, which are foldably connected to both ends thereof, and are made of resin or the like. The lens support frame 1 and the temple 2 are configured by solidifying with the matrix.

As the fibers used for weaving the lens support frame material 10 and the temple material 20, fibers having high strength, high elasticity, heat resistance and a low coefficient of thermal expansion are desirable, for example, polyparaphenylene diphenyl ether terephthalamide. There are aromatic polyamide fibers, polyparaphenylene benzobisoxazole, so-called PBO fibers and the like, and as a matrix for solidifying (curing) them, heat resistance,
A resin having strength and good moldability is desirable.
Inorganic substances such as epoxy resin and glass can be used.

The lens supporting frame member 10 has a pair of lens frame portions 12a and 12b, which are composed of connecting portions 11a and 11b at both ends, and upper lens frames 13a and 13b and lower lens frames 14a and 14b which are connected to them. And a bridge portion 15 that connects the lens frame portions 12a and 12b, and a pair of nose pad connecting portions 16a and 16b that are connected to the lower lens frames 14a and 14b. Is forming. That is, the upper lens frame 13a and the lower lens frame 14a of the lens frame part 12a are branched from one of the temple connecting parts 11a having the braid structure, and these are re-assembled to form the bridge part 15. The part 15 is branched again to the other lens frame part 12b.
The upper lens frame 13b and the lower lens frame 14b are formed, and these are combined to form the other temple connecting portion 11b. The nose pad connecting portions 16a and 16b are the lower lens frame 14
Although the a and 14b are formed in a branched state at the time of weaving, the nose pad connecting portions 16a and 16b are formed by integrally connecting the nose pads or a separate nose piece. It can also be formed as a mounting part for attaching a pad. Further, the upper lens frames 13a and 13b can be connected to each other by a linear reinforcing rod branched from them so that the reinforcing effect and the modifying effect by the reinforcing rod can be obtained.

On the other hand, the vine member 20 includes a vine body 21.
A connecting portion 2 for connecting to the temple connecting portion 11a or 11b of the lens supporting frame member 10 at one end of each of a and 21b.
2a and 22b are provided. This vine material 20 is
As shown in the drawing, as a separate member from the lens supporting frame member 10, they can be rotatably connected by the pins 3 after solidifying them in a matrix, but the connecting portion 22
It is also possible to have a braid structure that is connected to the temple connecting portions 11a and 11b of the lens supporting frame member 10 by fiber bundles forming bent portions at a and 22b and is integrated with the lens supporting frame member 10.

When the fiber reinforced material for eyeglass frames is constructed in this manner, the lens supporting frame material 10 can be constructed as an integrated tissue without cutting continuous fibers in the middle, so that the characteristics of the fiber can be utilized to the maximum. By solidifying this fibrous structure with a matrix of resin or the like, a lightweight, high strength, high toughness spectacle frame can be obtained. Further, by adopting the braid structure, an appearance utilizing the fiber structure and the pattern can be obtained, and a spectacle frame excellent in fashionability can be obtained.

FIG. 2 shows an outline of a braid structure of a portion of the lens supporting frame member for branching / joining. At the branching / merging portion, the upper lens frame 13a and the lower lens frame 14a, or the upper lens frame 13b and the lower lens frame 14b.
The braided tissue of the two branch portions 32 and 33 that make up the branch portion and the stem portion 31 that combines them is the above-mentioned branch portion 3
2. All or most of the fibers forming 2, 33 are woven into the tissue of the trunk portion 31 immediately after their coalescence in the tissue opposite to the branching side of the branch portions 32, 33, and the fibers thereof. Is partly included in the fibers constituting the outer edge of the tissue in the tissue on the opposite side to be organized.

That is, all or most of the fibers forming the branch portion 32 located on the upper side in FIG. 2 are formed in the structure of the stem portion 31 immediately after the branch portions are united, in the stem portion 3 thereof.
1 is woven below the branch reference plane P, and conversely, all or most of the fibers of the branch portion 33 located on the lower side of FIG. 2 are woven above the branch reference plane P in the trunk portion 31, and A part of the fibers woven into the tissue on the side opposite to the branching side of the branch portions 32 and 33 is included in the fibers forming the outer edge of the tissue in the stem tissue on the opposite side to form the tissue. The branch reference plane P is each branch portion 3
It means a surface that divides the trunk portion 31 by the ratio of the number of fibers forming 2, 33.

In this way, the lens supporting frame member 10 is formed.
The branching / coalescing part of the braided tissue in
When the fibers of 33 cross the branch reference plane P of the trunk portion 31 to form an X-shaped structure, the braid structure in the branching / merging portion is strengthened, and the trunk portion at the position where the branch portions 32, 33 are united. It is possible to obtain a tissue in which the tear strength of the tissue is remarkably increased. That is, the branching of the braid organization
In the united portion, when the trunk portion 31 is simply branched into two branch portions, when both branch portions 32 and 33 are pulled in the tearing direction, both branch portions 32 are set until a certain fiber entanglement state is settled. , 33 are torn and both branches 3
The fibers located at the junction of 2, 33 will be pulled out. In this case, not only are the two branch portions 32, 33 stretched and their dimensions lengthened, but also the two branch portions 32, 3
It becomes difficult to control the shape of the branched portion of 3.

Since the branching / merging portion having both the branch portions 32 and 33 constitutes a part of the lens frame portions 12a and 12b in FIG. 1, the length varies depending on the peripheral length of the lens. Although it is necessary to reduce the number of cross-sections as much as possible and to form the cross-sectional shape as accurately as possible for holding the lens, the strengthening of the braid structure at the branching / coalescing portion described above is extremely effective for them. It is a thing.

Next, the process of forming the lens supporting frame member 10 by weaving the fiber bundle will be described with reference to FIG. First, as shown in FIG. 3A, a required number of fiber bundles F are prepared, and the trunk portion 31 serving as the temple connecting portion 11a is braided into a fibrous structure having a required shape and structure, and then the unfabricated string. The fiber bundle group of No. 1 is proportionally distributed to the number of fiber bundles according to the thickness of the upper lens frame 13a and the lower lens frame 14a of the lens frame portion, and the longer branch portion 33 to be the lower lens frame 14a is formed first. Then, the shorter branch portion 32 is braided. At the time of distribution of the unstretched string fibers at the time of branching, all or most of the fibers constituting each of the upper lens frame 13a and the lower lens frame 14a are collected from the side opposite to the branch reference plane P in the trunk portion 31, At that time, at least a part of the fibers forming the outer edge of the tissue on the opposite side of the trunk portion 31 is collected and collected, and the branch portions 32 and 33 are respectively organized. On the side of the branch portion 33 that constitutes the lower lens frame 14a, a nose pad connection portion 16a can be formed by branching, if necessary.

The branch portion 33, which becomes the lower lens frame 14a previously braided as described above, forms the lens frame portion 12a, and as shown in FIG. 3B, the trunk portion which is the temple connecting portion 11a. It is desirable that the branch portion 32, which is the shorter upper lens frame 13a, be braided in such a state that it is oriented so as to be orthogonal to the minute portion 31. When the cord is thus braided, it is possible to obtain the lens supporting frame member 10 which is strong and has a good appearance and which has an integral structure.

After the branch portion 32 constituting the upper lens frame 13a is braided for a required length, it is joined with the lower lens frame 14a previously braided, and the bridge portion 15 is formed as shown in FIG. 3C. Let When making the string of the bridge portion 15,
All or most of the structure of the upper lens frame 13a is arranged so as to be located on the opposite side through the branch reference plane P of the bridge portion 15, and all or most of the fibers of the lower lens frame 14a are bridged. It is organized so as to be located on the opposite side through the branch reference plane P of the portion 15. At that time, a part of the fibers guided to the opposite side of the branch reference plane P is further included in the fibers forming the outer edge portion of the tissue in the tissue on the opposite side.
Subsequently, the other upper and lower lens frames 13b and 14b and the temple connecting portion 11b are connected to the above-mentioned upper and lower lens frames 13a and
The string is formed by a procedure similar to that of forming the 14a and the bridge portion 15. By weaving in this manner, the fibers of the branch portions are arranged in an X shape across the branch reference plane P, the tear strength of the branch portions is high, and the lens supporting frame member 10 having an integral structure with a good appearance is obtained. Obtainable.

The thickness and cross-sectional shape of the upper / lower lens frames 13a, 14a and the upper / lower lens frames 13b, 14b are determined by the aesthetics and mechanical functions required for the product, but in order to improve the lens holding performance. The cross section can have a complicated shape such as a groove shape. This cross-sectional shape can be forcibly formed by a mold when the lens supporting frame body 10 is solidified by using a matrix.
It is also possible to preliminarily organize the 12b into a state close to the final cross-sectional shape. In addition, the lens frame portions 12a, 12
In order to simplify the cross-sectional shape of b, a mounting groove is provided around the spectacle lens, and the cross-sectional shape of the lens frame portions 12a and 12b is fitted into the mounting groove to form a thin line shape for holding the spectacle lens. You can also

Further, the lens support frame member 10 having the above-mentioned integral structure
The non-tissue fiber bundle ends, which are the first and last parts of the cord, are folded back toward the inside of the temple connecting portions 11a and 11b so as to be buried in the existing tissue and reorganized,
It is possible to obtain a lens support frame material that has a good appearance and is less prone to tissue fraying. The same applies to the structure of the vine material 20,
It is desirable that a required number of fiber bundles folded back in a loop shape are braided to a required structure and length, and then the non-braided fibers of the assembling mouth are restructured so as to be embedded in the existing tissue. Crane connecting portions 11a, 11 at both ends of the lens supporting frame member 10
b and the connecting portions 22a and 22b of the temple member 20 are provided with pin holes for inserting the connecting pins 3 if necessary. These pin holes are reorganized by folding back the fiber bundle ends. At this time, the lens supporting frame member 10 is provided by punching and weaving.
Also, when the temple 20 is solidified with a matrix such as a resin, those pin holes may be molded.

After manufacturing the spectacle frame, attach a lens to it,
Alternatively, it is necessary to remove the lens from the spectacle frame when exchanging the lens after long-term use or repairing the spectacle frame due to damage. The fibrous structure of the braided tissue that constitutes the lens supporting frame member 10 has a relatively large elongation, and the lens can be easily attached and detached if the lens supporting frame member 10 is in a state before being solidified. When the lens support frame material is solidified with a matrix such as a thermoplastic resin that is softened by heating, the lens can be attached and detached by heating near the softening point of the matrix. On the other hand, when the spectacle frame is solidified with a matrix that is difficult to thermally process after molding the thermosetting resin or the like, in order to remove the lens from the spectacle frame,
A joint margin 17 formed by a gap as shown in FIG. 4 is provided at a branching / merging portion of the temple connecting portions 11a and 11b and the bridge portion 15 with the upper / lower lens frame, and the joint screw 17 can be tightened with a tightening screw 18. Is desirable, which facilitates attachment and detachment of the lens.

The lens support frame member 10 and the vine member 2 described above.
The formation of the fibrous tissue constituting 0 can be performed by the above method using a traditional braiding machine such as a square bracket, but it is necessary to obtain a braided tissue as described below. A stringing method for mechanically performing selective movement of fiber bundles, that is, Japanese Patent No. 1,700,903 (Japanese Patent Publication No. 3-64621: Weaving method for three-dimensional unequal cross-section fabric) and Japanese Patent No. 1,713,13. 9
It can also be achieved by utilizing a technique known as No. 85 (Japanese Patent Publication No. 3-79461: three-dimensional reinforcing textiles for beam-shaped composite materials and a method for producing the same).

FIG. 5 shows an outline of a braiding device for weaving the lens supporting frame member 10 having a braided structure having the above-mentioned branching / merging portion. This braiding device is provided on the machine frame 40. Each of the main tissue take-up portion 41 for holding one end of a large number of fiber bundles F, the first and second sub-tissue take-up portions 42, 43 for holding the fiber bundles in the string, and the fiber bundle F, respectively. The fiber bundle drive device 44 for holding the other end in each drive unit (FIG. 6) is provided, and further provided is a drive unit and a control unit (not shown) for driving each unit and controlling the operation.

As shown in FIG. 6, the fiber bundle drive device 44 mounted on the machine casing 40 includes a drive device 46 that intermittently rotates such as a rotary stepping actuator, and a rotor 47 that is intermittently driven by the drive device 46. A large number of drive units provided in a plurality of rows are arranged in the carrier array region S (FIG. 7) for moving the fiber bundle having a planar shape or a curved surface so that the rotors 47 are adjacent to each other along the carrier raceway surface. It is configured by arranging in multiple rows. Drive device 46 in the drive unit
In the above, the forward and reverse rotational drive is independently controlled by the control unit, and the drive control sets the carrier movement ranges a _{1 to} a ₄ described with reference to FIG. 7.

Further, the rotor 4 in the above drive unit
In order to hold the carrier 48 for moving the fiber bundle between a pair of rotors which are adjacent to each other, the rotor 7 has a structure in which each rotor 47
A recess 49 for holding the carrier is provided on the four circumferences. These recesses 49 hold the carrier 48 between a pair of adjacent rotors 47, and when one of the rotors 47 rotates, the carrier 48 held between them.
Is formed so that it can be moved by using the recess 49 of the other rotor 47 as a guide. Therefore, the recess 49
The inner surface of is formed as a cylindrical surface centered on the rotation axis of the adjacent rotor, or a rotation surface functionally equivalent thereto. On the other hand, the carrier 48 sandwiched between these rotors
Is provided with a holding portion 51 formed of two cylindrical surfaces and a flange portion 52 projecting above and below the holding portion 51 so as to fit into the space formed between the recesses 49 of the pair of rotors 47 adjacent to each other. A tension adjusting body 53 that applies a tension to the fiber bundle F is attached via 54, and the fiber bundle can be anchored to the tension adjusting body 53.

The tension adjusting body 53 is for maintaining the required tension on the fiber bundle F moored to the carrier irrespective of the moving position of the carrier 48 and facilitating the braiding operation. A string, a tension spring, or a tension adjusting device that pulls out a fiber bundle from the inside when the tension reaches a certain value or more, for example, a yarn feeding device disclosed in JP-A-4-308262 can be used. .

In order to braid the lens supporting frame member 10 using the braiding apparatus of FIG. 5, first, the required number of fiber bundles F are bundled and fixed to the main tissue take-up portion 41, and the other end is The carrier 48 is anchored via the tension adjuster 53 (FIG. 6).
Explaining this concretely, when making the cord, the line A in FIG.
As shown in FIG. 6, the carrier 48 (not shown in FIG. 7) is arranged so as to match the cross-sectional shape of the fiber tissue body 60 to be braided, that is, the temple connecting portion 11a of the lens supporting frame member 10.
The moving area a ₁ is set to a similar shape obtained by expanding the cross-sectional shape of the carrier, the carrier 48 is arranged in the moving area a ₁ , and the ends of the fiber bundles F are adjusted by the hooks 54 in the carrier 48. Moored via body 53. on the other hand,
The fixing of the other end of the fiber bundle F to the main tissue take-up portion 41 is performed by the shaft 5 that moves up and down by the linear actuator 56.
This can be done by inserting the pin 59 into the fibrous tissue grasping block 58 connected to 7, but this fixing is performed.
Other suitable grips other than pins are possible.

Incidentally, in the main tissue take-up section 41 of FIG. 5, the linear actuator 6 is integrally installed with the linear actuator 56 to move it in the horizontal direction.
Reference numeral 2 is for moving the fibrous tissue gripping block 58 in the horizontal direction so that the assembly opening of the fibrous tissue 60 is located on the center line of the moving area a ₁ of the carrier. A shaft 63 for horizontally guiding is fixed to the machine frame 40 by bearings 64 and 65.

After mooring the ends of each fiber bundle F to the carrier 48 in this way, the drive unit 46 in the drive unit is set so that the carrier 48 travels on a desired locus in the carrier moving range a ₁ . By driving, the fiber bundles F change their arrangement positions with respect to each other and are braided to the braided tissue. The fibrous tissue 60 in FIG. 7A shows a tissue thus organized. B of the same figure schematically shows the procedure for producing the lens supporting frame member 10 subsequent to the above production. As described above, the fiber bundle is stretched, the fiber bundle carrier is moved in the moving range a ₁ , and the temple connecting portion 11a of the lens supporting frame material is braided into a required cross-sectional shape and a required tissue. The fiber bundle group composed of the fiber bundles F is bundled into two groups having the number of fiber bundles corresponding to the thicknesses of the branch portions 60a and 60b to be subsequently braided to form the upper lens frame 13a and the lower lens frame 14a. The bundled fiber bundle, the branch portion 60a,
The two carrier groups rearranged in the carrier moving areas a ₂ and a ₃ set according to the number of fiber bundles and the cross-sectional shape of 60b are again moored.

At the time of bundling the above fiber bundle group, as described above with reference to FIG. 2, some or all of the fibers of the branch portions 60a and 60b which form the upper lens frame 13a and the lower lens frame 14a. , Each of which is collected from the opposite side of the branch reference plane P in the vine connecting portion 11a, and the fibers including the tissue outer edge portion on the opposite side are also collected, and the collected fibers are used as the carrier 48 in each moving area a ₂ and a _3. Re-moor. Fiber carrier 4 constituting such branch portions 60a, 60b
8 instead of re-mooring, the carrier transfer areas a ₂ and a ₃ are set according to the number of fiber bundles and the cross-sectional shape of the fiber bundle groups that form the branch portions 60a and 60b, and the branch portion 60.
The fiber bundle group constituting a and 60b can be bundled by controlling the drive of the drive device 46 in each drive unit by the control unit.

Next, each moving range a of the carrier 48
₂ and a ₃ , the upper lens frame 13a is attached to the carrier 48.
And an operation according to the structure and shape of the lower lens frame 14a is applied to match the length of the upper lens frame 13a.
After the a and the lower lens frame 14a are braided, the fibrous tissue of the lower lens frame 14a, which is the longer lens frame, is attached to the first sub-tissue pulling section 42 (see FIG. 5), and the sub-tissue While pulling up by the take-up part 42, the lower lens frame 14a is braided to a required length. While the lower lens frame 14a is being braided using the sub-tissue take-up portion 42, the carrier movement area a
₂ , the upper lens frame 13a is driven by the carrier 48.
The straps have been discontinued.

The first and second sub-tissue receiving portions 42,
43 includes a holding block 66 for holding the fibrous tissue 60, and by moving the holding block 66, the assembling port of the fibrous tissue 60 is appropriately moved with respect to the moving area of the carrier, similarly to the main tissue take-up portion 41. A linear actuator 70 guided along the shaft 67 fixed to the machine frame 40 in the vertical direction by bearings 68 and 69 is provided on the shaft 67.
A linear actuator 71, which is integrated with the linear actuator 70 and is used to move a holding shaft 72 having a holding block 66 attached to the tip thereof in the horizontal direction, is provided.

A holding block 66 formed in a frame shape for holding the fibrous tissue 60 which becomes the lower lens frame 14a allows the fibrous tissue 60 to be fitted by opening a part of the frame.
In order to hold the fibrous tissue body 60, a pin is inserted into the fibrous tissue body 60 through the holding block 66, whereby the fibrous tissue body 60 held by the holding block 66 is held. The position can be moved upward in accordance with the progress of the braiding process, and can also be moved in the horizontal direction as necessary to move the assembling port to the center of the moving area a ₃ .

The second sub-tissue take-up portion 43 holds the fibrous tissue 60, which is the other part of the upper lens frame 13a or the lens supporting frame member 10, by its holding block 66, if necessary. Similar to the sub-tissue take-up unit 42, it is used for partial string-making. By using such first and second sub-tissue take-up portions, in weaving a fibrous structure having a plurality of long and short branched branch portions,
It is possible to keep the assembly mouth of the other branch part in a fixed position while performing the braiding of only one branch part, and align both the assembly mouths when rejoining the two branch parts. You can

After the required lengths of the upper and lower lens frames 13a and 14a are braided, as shown in FIG. 7C, the assembling ports of the fibrous structure 60 constituting the upper and lower lens frames 13a and 14a are opened. They are joined and integrated, and also the carrier movement range a ₂
And a carrier 48 for moving the fiber bundle, which is divided into a ₃
Are collected in one moving area a ₄ and the carrier 48 is driven in the moving area a ₄ to bridge the bridge portion 1 of the lens support frame member.
5 is formed into a required shape. It should be noted that the carrier moving area a ₄ when the bridging portion 15 hits the cord is
It is set to a similar shape by expanding the cross-sectional shape of. An upper lens frame 13a and a lower lens frame 14 that organize the bridge portion 15
The upper lens frame 13a is used for joining and combining the assembling ports of a.
So that all or most of the fibers that form the lower lens frame 14a are located on the opposite side through the branch reference plane P of the bridge portion 15, and all or most of the fibers that form the lower lens frame 14a. The fiber bundle is redistributed so as to be located on the opposite side through the surface P, and the bridge portion 1 having the required length is obtained.
String 5

Next, the other upper / lower lens frame 13
The b and 14b and the temple connecting portion 11b are stringed by the procedure according to the above-mentioned procedure to obtain the lens supporting frame member 10 made of a fibrous tissue. Then, by solidifying this with a matrix of resin or the like, it is possible to manufacture a spectacle frame which is lightweight, has high strength, high toughness, is functional, and is excellent in fashionability. In order to improve the lens holding performance of the lens supporting frame member 10, when the cross-sectional shape of the upper and lower lens frames is a groove type, the movement range of the fiber bundle moving carrier 48 is formed when the lens frames are braided. By setting the shape of the groove shape to a shape similar to the groove shape, a fibrous tissue body having a cross section close to a desired groove shape can be braided.

Further, the fiber bundle ends of the non-stranding cords at the ends of the temple connecting portions 11a and 11b, which are the first and last portions of the lens supporting frame member 10 which are braided as an integral fibrous tissue by the above-mentioned means, , It is desirable to fold back using an appropriate means, for example, a needle toward the side surface of the inside of the pre-existing tissue of the temple connecting portion, and reorganize so as to be embedded in the pre-existing tissue, which makes it difficult for the tissue to loosen, and A lens support frame material having a good appearance can be obtained.

In the example of the cord making by the above-mentioned cord making device, a large number of drive units are arranged in a large number of rows and a large number of columns in the carrier arrangement region S for moving the fiber bundle, and in the carrier arrangement region S, as shown in FIG. Carrier movement range a ₁ to be described by
Although the case where a ₄ is set appropriately has been described, the carrier arrangement area may be divided into a plurality of pieces so that the carrier arrangement area can be contacted and separated, and the carrier movement area may be appropriately set in the divided arrangement area for stringing. Furthermore, in the example of the braiding by the braiding device, as a general rule, the case where the braiding is performed by using the fiber bundle as a unit has been described, but it goes without saying that the present invention is not limited to this.

[0042]

EFFECTS OF THE INVENTION According to the present invention described in detail above, the fiber reinforced material for eyeglass frames can be provided as a braided structure integrally woven from fibers having excellent strength, which can be provided as a resin. By solidifying with a matrix such as, a spectacle frame which is lightweight, has high strength and high toughness, is functional, and is excellent in fashionability can be obtained. Also,
When forming the fiber reinforcement of the braid structure, it is possible to effectively strengthen the braid structure in the branched / coalesced portion of the frame structure, and obtain a fiber reinforcement for eyeglass frames with increased strength of that portion. . Further, in the present invention, the fiber reinforcement for eyeglass frames is used by using a conventionally used braiding machine, or the selective movement of the fiber bundle necessary for obtaining the braided tissue is mechanically moved. Since the known braiding device having a braiding structure which can be weaved by slightly modifying the known braiding device is used, the known braiding technique can be effectively used to easily weave the braiding.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an eyeglass frame formed by solidifying a fiber reinforcing material for eyeglass frames according to the present invention.

FIG. 2 is a partially enlarged front view showing an outline of a braid structure of a branching / merging portion of a lens support frame member.

3A to 3C are explanatory views of a process of forming a lens supporting frame member by weaving a fiber bundle.

FIG. 4 is a partial front view showing another embodiment of the lens supporting frame member.

FIG. 5 is a configuration diagram of a cording device for weaving a lens supporting frame material having a braided tissue.

FIG. 6 is a partially enlarged perspective view showing a configuration of a fiber bundle driving device in the stringing device.

7A to 7C are explanatory views for explaining a process of braiding a fibrous tissue by the braiding device of FIG.

[Explanation of symbols]

 10 Lens Support Frame Material 11a, 11b Vine Connection Part 12a, 12b Lens Frame Part 13a, 13b Upper Lens Frame 14a, 14b Lower Lens Frame 15 Bridge Part 15 31 Trunk Part 32, 33 Branch Part

Claims (3)

[Claims] 1. A lens supporting frame member for spectacles, which comprises a fibrous structure woven as a braided structure having an integral structure as a whole, wherein the lens supporting frame member has at least a connecting portion at both ends thereof and A pair of lens frame parts consisting of an upper lens frame and a lower lens frame that are connected to each other, and a bridge part that connects these lens frame parts. The braided tissue is branched to form the upper lens frame and the lower lens frame of the lens frame portion, and a bridge portion is formed as a braided tissue by reassembling them, and the braided tissue is branched again from this bridge portion. Then, the upper lens frame and the lower lens frame of the other lens frame portion are formed, and further, the other temple connecting portion is formed as a braid structure by combining these, thereby forming a desired lens support frame shape for spectacles. Formed , Eyeglass frame for fiber reinforcement, characterized in that. 2. The branching / merging portion of the braided tissue in the lens supporting frame material for spectacles according to claim 1, wherein the braided tissue of a plurality of branched branch portions and a trunk portion that joins them is the above-mentioned one. All or most of the fibers that form the branch portions are woven in the tissue on the side opposite to the branching side of those branch portions, at least in the tissue of the trunk portion immediately after their coalescence, and a part of the fibers, A fiber reinforced material for eyeglass frames, characterized in that it is included in the fibers constituting the outer edge of the tissue in the tissue of the trunk portion on the opposite side and is organized. 3. A method of weaving a lens supporting frame material for spectacles as a fibrous tissue body having a braid-like structure having an integral structure as a whole, which is obtained by weaving with a braided structure. The braided tissue is branched and the upper lens frame and the lower lens frame of the lens frame are woven as braided tissue to a length that can hold the spectacle lens, and then re-united to form a braided tissue bridge. After weaving and forming the part, the braid tissue is branched again from this bridge part, and the upper lens frame and the lower lens frame of the other lens frame part are woven as a braid structure to a length that can hold an eyeglass lens. , The braid tissue is branched from one of the temple connecting portions having the braid tissue to form the upper lens frame and the lower lens frame of the lens frame portion,
A bridge part is formed as a braid structure by reassembling them, and the braid structure is branched again from this bridge part to form the upper lens frame and the lower lens frame of the other lens frame part. A method for producing a fiber-reinforced material for eyeglass frames, which comprises forming the other temple connecting part as a combined braid structure, and thereby forming it into a desired lens support frame shape for eyeglass frames.