KR102517289B1 - Method for manufacturing of plastic eyeglass frames - Google Patents

Abstract

The present invention relates to a method for manufacturing a plastic eyeglass frame, and plastic resin is injected using a mold to correspond to the left and right rims 11 and 12, the bridge 13, and the endpieces 14 and 15, respectively. The base forming step (S10) of shaping the frame base 110 having the rim forming parts 111 and 112, the bridge forming part 113, and the end piece forming parts 114 and 115, and the base forming step (S10). Frame processing to form the lens frame 10 by processing the left and right rims 11 and 12, the bridge 13, and the end pieces 14 and 15 from the molded frame base 110 to the final desired shape and thickness Forming an assembly structure of nose pads and temples on the bridge 13 and end pieces 14 and 15 of the lens frame 10 finally formed by step S20 and frame processing step S20 and finishing the surface Including a post-processing step (S30), in the frame processing step (S20), the inner or outer peripheries of the rim forming parts 111 and 112 of the frame base 110 are cut and processed to form the left and right rims of the final lens frame 10. The thickness of (11, 12) is processed to 0.4 ~ 0.6 mm, but the lens holding parts (116, 117) are protrudingly formed in the center or on one side along the inner periphery of the rim forming parts (111, 112), thereby forming a conventional plastic eyeglass frame. It is characterized by manufacturing plastic eyeglass frames with a lightweight and high-class design compared to other products.

Description

Method for manufacturing plastic eyeglass frames {METHOD FOR MANUFACTURING OF PLASTIC EYEGLASS FRAMES}

The present invention relates to a method for manufacturing a plastic spectacle frame, and more specifically, realizes a more lightweight and high-class design by processing and molding, which is different from conventional plastic spectacle frame manufacturing technology manufactured by injection molding a plastic material according to the shape of a spectacle lens. It relates to a method for manufacturing plastic eyeglass frames.

BACKGROUND OF THE INVENTION [0002] In general, spectacles are composed of a spectacle frame designed to correct eyesight, protect eyes, or for fashion purposes and designed to be worn on a face by a user, and a lens assembled to the spectacle frame.

A spectacle frame is largely composed of a lens frame and a temple. The lens frame is composed of both rims to which lenses are assembled, a bridge connecting the rims and mounting a nose pad supporting a user's nose, and end pieces forming a hinge structure on both sides of the rim. The temple is folded by being hinged to both end pieces of the lens frame, and the rear end is bent so as to span the user's ears.

Depending on the material, a metal frame and a plastic frame are the most typical eyeglass frames, and there are combination frames in which different materials are mixed.

The metal frame is made of materials such as titanium, nickel chrome, stainless steel, or plating gold or platinum on alloy, which is the main material. The metal frame has the advantage of high hardness and strength, but has the disadvantage of being heavy and low in workability compared to the plastic frame.

The plastic frame is manufactured by injection molding of celluloid, acetate, and epoxy resin, which are thermoplastic resins, using a mold. The plastic frame is a material that is mainly preferred in recent years because it is lightweight, excellent in processability, and easy to diversify the design compared to the metal frame.

As an example of the prior art related to the manufacture of plastic eyeglass frames, Korean Patent Registration No. 10 - 1402826 discloses a front made of plastic material in which a fusion groove is formed between a bridge and a lens fixing part by injecting a molten plastic melt into a molding space formed in a front mold. The injection molding step of molding the body and the front body molded in the injection molding step are inserted into the molding space of the insert mold in which the nose pad molding part is formed, and then the soft melt melted into the nose pad molding part is injected and cured through the gate. and an insert injection step of forming the surface fused nose pad protruding while hardening the soft molten material in the fusion groove formed in the front body through insert injection.

As another example, Korean Patent Registration No. 10 - 1179157 discloses a spectacle frame to which a pair of spectacle glasses are coupled, a nose support portion mounted in the center of the spectacle frame frame, temples coupled to both left and right sides of the spectacle frame frame, and left and right temples. In the method for manufacturing a spectacle frame consisting of a leg tip inserted into the eyeglass frame, the spectacle frame and the temple are manufactured by injection molding a synthetic resin material, and the nose support portion is composed of a nose support and a nose support, and the nose support is manufactured by injection molding of a synthetic resin. , The nose pad is manufactured by injection molding a silicone material, and the leg tip is manufactured by injection molding a synthetic resin material.

Korean Registered Patent No. 10 - 1402826 (2014.06.03) Korean Registered Patent No. 10 - 1179157 (2012.09.03) Korean Registered Patent No. 10 - 1260408 (2013.05.07) Korean Patent Publication No. 10 - 2012 - 0034844 (2012.04.13)

The plastic eyeglass frame manufacturing method to which the prior art is applied as described above is made in the form of manufacturing each or integrally by injection molding a thermoplastic synthetic resin using a mold when manufacturing a lens frame, a nose pad, a temple, and the like.

The plastic spectacle frame manufacturing method of the injection method has the advantage of easy design diversification due to superior workability and processability compared to the metal frame manufacturing method, but has a disadvantage in that it is difficult to manufacture a frame having a thinner thickness than the metal frame.

In particular, recently, a metal frame having a thickness of less than 1 mm has been provided to realize a sophisticated design and light weight. However, when a plastic frame is manufactured with a thin thickness by injection method, injection workability such as mold formation is significantly reduced. There is a limitation in that it is difficult to derive a level of strength capable of maintaining the lens.

Accordingly, the present invention was invented to solve the problems of the prior art as described above,

Left and right rims 11 and 12 to which lenses are assembled, a bridge 13 connecting between the left and right rims 11 and 12, and an end piece forming a hinge structure for temple coupling at both sides of the rim ( 14, 15) in the plastic eyeglass frame manufacturing method for molding the lens frame 10,

The rim forming parts 111 and 112 and the bridge forming part ( 113), a base forming step (S10) of temporarily shaping the frame base 110 having the end piece forming parts 114 and 115;

The left and right rims 11 and 12, the bridge 13, and the end pieces 14 and 15 are processed into the final desired shape and thickness from the frame base 110 temporarily formed by the base forming step (S10). A frame processing step (S20) of forming the lens frame 10;

A post-processing step (S30) of forming an assembly structure of a nose pad and a temple on the bridge 13 and the end pieces 14 and 15 of the lens frame 10 finally molded by the frame processing step (S20) and finishing the surface including,

In the frame processing step (S20),

The thickness of the left and right rims 11 and 12 of the final lens frame 10 is processed to 0.4 to 0.6 mm by cutting the inner or outer peripheries of the rim forming parts 111 and 112 of the frame base 110,

It is made to protrude and form the lens holding parts 116 and 117 at the center or one side along the inner periphery of the rim forming parts 111 and 112,

In the base forming step (S10),

The rim forming parts 111 and 112, the bridge forming part 113, and the end piece forming parts 114 and 115 form the left and right rims 11 and 12 of the final lens frame 10, the bridge 13, and the end piece ( A first type frame base 110 that is temporarily molded in the form of applying a curved shape on a plane of 14 and 15), or

In the first type, the rim forming part 111 and 112, the bridge forming part 113, and the front surface of the end piece forming part 114 and 115 are additionally applied to the inner and outer circumferential shapes of the second type frame base ( 110), it is possible to achieve the purpose of manufacturing a plastic eyeglass frame with a lightweight and high-class design compared to conventional plastic eyeglass frames.

The present invention provides a plastic eyeglass frame manufacturing method in which a base material is processed and molded, different from conventional plastic eyeglass frame manufacturing techniques in which a plastic material is manufactured by injection molding using a mold according to the shape of a spectacle lens.

Therefore, the present invention significantly improves workability by making it easier to manufacture plastic eyeglass frames having a thickness of 1 mm or less, and has the advantage of being able to manufacture plastic eyeglass frames having an appropriate level of durability while forming a structure capable of safely holding lenses. .

In addition, the present invention significantly reduces the weight of the spectacle frame, improves wearability, and manufactures a plastic spectacle frame with a more sophisticated design, thereby realizing high-end plastic spectacle frames.

1 is a process flow diagram of a method for manufacturing a plastic eyeglass frame according to the present invention.
2 is a perspective view of a frame base according to an embodiment of a method for manufacturing a plastic eyeglass frame according to the present invention.
3 is a plan view and a front view of a frame base according to an embodiment of a method for manufacturing a plastic eyeglass frame according to the present invention.
Figure 4 is a perspective view of the frame base according to another embodiment of the plastic spectacle frame manufacturing method of the present invention.
5 is a plan view and a front view of a frame base according to another embodiment of the plastic spectacle frame manufacturing method of the present invention.
6 to 7 are front and cross-sectional views of a lens frame manufactured according to an embodiment of a method for manufacturing a plastic spectacle frame of the present invention.

Hereinafter, the configuration and operation according to a preferred embodiment of the plastic spectacle frame manufacturing method of the present invention will be described in detail with reference to the accompanying drawings. In the following description, detailed descriptions of parts that can be easily implemented by those skilled in the art may be omitted. In addition, since the following description describes the present invention with respect to preferred embodiments, the present invention is not limited by the following examples, and it is natural that various modifications may be provided within a range that does not depart from the scope of the present invention. something to do.

1 is a process flow diagram of a method for manufacturing a plastic eyeglass frame according to the present invention, FIG. 2 is a perspective view of a frame base according to an embodiment of the method for manufacturing a plastic eyeglass frame according to the present invention, and FIG. Figure 4 is a perspective view of the frame base according to another embodiment of the plastic eyeglass frame manufacturing method of the present invention, Figure 5 is a frame base plan view and front view according to another embodiment of the plastic eyeglass frame manufacturing method of the present invention 6 and 7 show a front view and a cross-sectional view of a lens frame manufactured according to an embodiment of the plastic spectacle frame manufacturing method of the present invention.

The plastic eyeglass frame manufacturing method to which the technology of the present invention is applied is differentiated from the conventional plastic eyeglass frame manufacturing technology in which plastic materials are manufactured by injection molding according to the shape of the spectacle lens, so that the thickness of the plastic lens frame can be formed remarkably thin by processing molding. It is noted that this relates to a manufacturing technology of a plastic eyeglass frame that realizes a more lightweight and high-class design by being made.

For this purpose, the plastic spectacle frame manufacturing method of the present invention includes left and right rims 11 and 12 where lenses are assembled, a bridge 13 connecting between the left and right rims 11 and 12, and a template combination on both sides of the rim As a method for manufacturing a plastic eyeglass frame for forming a lens frame 10 having end pieces 14 and 15 forming a hinge structure for a base forming step (S10), a frame processing step (S20), and a post-processing step ( S30), and specifically as follows.

In the base forming step (S10), plastic resin is injected using a mold to form a frame base ( 110) is a step of shaping.

In the base forming step (S10), the frame base 110 is temporarily molded as a base material for processing the final target lens frame 10 using synthetic resin, which is a material of a plastic eyeglass frame.

The frame base 110 is molded to integrally include rim forming parts 111 and 112 , bridge forming parts 113 , and end piece forming parts 114 and 115 .

The rim forming parts 111 and 112 are formed on the left and right portions of the frame base 110 to form both rims to which spectacle lenses are assembled. The rim forming parts 111 and 112 are molded to be left and right symmetrical about the bridge forming part 113.

The bridge forming part 113 is located between the left and right rim forming parts 111 and 112 at the center of the frame base 110 to form a bridge 13 that connects both rims and couples the nose pads. form to position The bridge forming part 113 is molded into a shape that is curved and protruded forward compared to the rim forming parts 111 and 112 on both sides.

The end piece forming parts 114 and 115 are formed on one side of each of the left and right rim forming parts 111 and 112 on both sides of the frame base 110 to assemble the eyeglass temple. The end piece forming parts 114 and 115 are curved toward the rear compared to the rim forming parts 111 and 112 on both sides, and are molded to be symmetrical to each other.

In the base forming step (S10), the shape of the frame base 110 injected by the mold is temporarily molded into a first type or a second type according to the desired shape of the lens frame 10 or processing conditions.

In the first type frame base 110, rim forming parts 111 and 112, bridge forming parts 113, and end piece forming parts 114 and 115 are connected to the left and right rims 11 and 12 of the final lens frame 10. , The bridge 13 and the end pieces 14 and 15 are made to be temporarily molded in the form of applying a curved shape on a plane.

The first type frame base 110 is molded to be universally used when the final target lens frame 10 is manufactured in a special design or when various types and small quantities are manufactured.

2 and 3, in the base forming step (S10), the left and right rims 11 and 12 on the plane of the lens frame 10, the forward curved shape of the bridge 13 and the end piece ( 14, 15) is formed by injection molding the first type frame base 110 in the form of a block to which a backward curved shape is applied.

The frame base 110 of the first type has an inner and outer peripheral shape corresponding to the front shape of the lens frame 10 by a subsequent frame processing step (S20), and the rim forming parts 111 and 112 and the bridge forming part 113 , It is configured to process the end piece forming parts 114 and 115.

In the second type frame base 110, in the first type, the rim forming parts 111 and 112, the bridge forming parts 113, and the end piece forming parts 114 and 115 are additionally applied to the inner and outer circumference shapes It is made to mold into a shape.

The second type frame base 110 has a general design of the final target lens frame 10 and is molded to significantly reduce plastic materials and secure durability during mass production.

4 and 5, in the base forming step (S10), the left and right rims 11 and 12 on the plane of the lens frame 10, the forward curved shape of the bridge 13 and the end piece ( Formed by injection molding the second type frame base 110 in the form of applying the curved back shape of 14 and 15) and applying the inner and outer peripheral curved lines of the entire lens frame 10 from the front side at the same time. do.

The second type of frame base 110 is formed by processing the rim forming parts 111 and 112, the bridge forming part 113, and the end piece forming parts 114 and 115 more easily in a subsequent frame processing step (S20) to obtain the final target. Since the lens frame 10 can be formed, work efficiency and productivity can be improved.

In the frame processing step (S20), the left and right rims 11 and 12, the bridge 13, and the end piece are formed in the final desired shape and thickness from the frame base 110 temporarily molded by the base forming step (S10). This is a step of forming the lens frame 10 by processing (14, 15).

In the frame processing step (S20), the rim forming parts 111 and 112, the bridge forming part 113, and the end formed on the first type or second type frame base 110 temporarily molded by the base forming step (S10) The piece forming parts 114 and 115 are precisely processed to correspond to the final target shape of the lens frame 10 .

In the frame processing step (S20), the left and right rims 11 and 12 are formed to a thickness that cannot be formed by injection molding a conventional plastic eyeglass frame, and the rim forming portion of the frame base 110 ( 111 and 112) by cutting the inner or outer peripheries, and as shown in FIGS. 6 and 7, the left and right rims 11 and 12 of the final lens frame 10 are processed to a thickness of 0.4 to 0.6 mm.

It is natural that the bridge forming part 113 and the end piece forming parts 114 and 115 can also be processed to a thickness corresponding to the thickness of the left and right rims 11 and 12.

As the thickness of the left and right rims 11 and 12 of the lens frame 10 processed by the frame processing step (S20) is formed within the above range, it is impossible to form a lens assembly structure like a conventional plastic eyeglass frame. , In the frame processing step (S20), the lens holding portions 116 and 117 are formed to protrude from the center or one side along the inner periphery of the rim forming portions 111 and 112 to be processed.

The lens holding parts 116 and 117 are processed to form an annular protrusion along the inner periphery at the center of the inner periphery or at the front or rear side in the process of processing the rim forming parts 111 and 112 to a thickness of 0.4 to 0.6 mm.

The lens holding parts 116 and 117 are concave and concave the outer rim of the lens in a shape corresponding to the lens holding parts 116 and 117 in the process of assembling the spectacle lens to the lens frame 10 later to hold the lenses when mutually coupled. . In the embodiment of the present invention, the lens holding parts 116 and 117 having a triangular cross section are exemplified, but the shape can be applied in various ways.

In the post-processing step (S30), an assembly structure of nose pads and temples is formed on the bridge 13 and the end pieces 14 and 15 of the lens frame 10 finally formed by the frame processing step (S20), and the surface is This is the closing stage.

The rim forming parts 111 and 112, the bridge forming part 113, and the end piece forming parts 114 and 115, which are temporarily molded on the plastic frame base 110 by the base forming step (S10) to the frame processing step (S20), respectively When the shape and thickness of the final target lens frame 10 are processed into rims, bridges 13, and end pieces 14 and 15, in the post-processing step (S30), screw holes and hinges to assemble nose pads and temples form

As described above, in the plastic eyeglass frame manufacturing method according to the present invention, after the frame base 110, which is the base material of the plastic lens frame 10, is temporarily molded, the rim forming parts 111 and 112, the bridge forming part 113, and the end piece Provided is a plastic eyeglass frame manufacturing method in which the forming parts 114 and 115 are processed to form a lens frame 10 having a thickness level of 0.4 to 0.6 mm, which is significantly different from conventional plastic eyeglass frames.

Therefore, the present invention significantly improves workability by making it easier to manufacture plastic eyeglass frames having a thickness of 1 mm or less, and has the advantage of being able to manufacture plastic eyeglass frames having an appropriate level of durability while forming a structure capable of safely holding lenses. .

In particular, the present invention significantly reduces the weight of the spectacle frame, improves wearability, and manufactures a plastic spectacle frame with a more sophisticated design, thereby realizing the high quality of the plastic spectacle frame. Therefore, industrial applicability is expected to be very high. .

S10: base formation step
S20: Frame processing step
S30: post-processing step
10: lens frame
11,12: left, right rim
13: Bridge
14,15: end piece
110: frame base
111,112: rim forming unit
113: bridge forming unit
114,115: end piece forming unit
116,117: lens holding unit

Claims (3)

Left and right rims 11 and 12 to which lenses are assembled, a bridge 13 connecting between the left and right rims 11 and 12, and an end piece forming a hinge structure for temple coupling at both sides of the rim ( 14, 15) in the plastic spectacle frame manufacturing method for molding the lens frame 10,
The rim forming parts 111 and 112 and the bridge forming part ( 113), a base forming step (S10) of temporarily shaping the frame base 110 so as to integrally have the end piece forming parts 114 and 115;
The left and right rims 11 and 12, the bridge 13, and the end pieces 14 and 15 are processed into the final desired shape and thickness from the frame base 110 temporarily formed by the base forming step (S10). A frame processing step (S20) of forming the lens frame 10;
A post-processing step (S30) of forming an assembly structure of a nose pad and a temple on the bridge 13 and the end pieces 14 and 15 of the lens frame 10 finally molded by the frame processing step (S20) and finishing the surface including,
In the frame processing step (S20),
The thickness of the left and right rims 11 and 12 of the final lens frame 10 is processed to 0.4 to 0.6 mm by cutting the inner or outer peripheries of the rim forming parts 111 and 112 of the frame base 110,
It is made to protrude and form the lens holding parts 116 and 117 at the center or one side along the inner periphery of the rim forming parts 111 and 112,
In the base forming step (S10),
The rim forming parts 111 and 112, the bridge forming part 113, and the end piece forming parts 114 and 115 form the left and right rims 11 and 12 of the final lens frame 10, the bridge 13, and the end piece ( 14, 15) is formed by injection molding the first type frame base 110 with plastic resin as a base material made of a single block to which the front and rear curved shapes are applied, or
In the first type, the rim forming part 111 and 112, the bridge forming part 113, and the end piece forming part 114 and 115 are additionally applied to the inner and outer circumferential shapes of the frontal shape. As a base material made of a single block, the second type frame base A plastic spectacle frame manufacturing method characterized in that it is formed by injection molding (110) with a plastic resin. delete delete

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