Lens processing tool
By using a lens processing fixture with vacuum adsorption and a limiting structure, the problems of easy lens displacement and poor centering in existing technologies have been solved, achieving stable lens fixation and high-quality processing, and improving wearing comfort.
Patent Information
- Application Number
- CN202423226376.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The existing orthokeratology (Ortho-k) lens processing fixtures are fixed fixtures, which have problems such as large handling and placement errors, easy lens displacement, poor centering, resulting in uncomfortable wearing and incorrect refractive power.
The lens processing fixture employs vacuum adsorption. By forming air channels and air holes on the processing table and connecting it to a pressure device, negative pressure is used to adhere the lens to the table surface. The lens is then circumferentially limited by limiting bosses and arc-shaped springs. Combined with the negative and positive pressure functions of the capsule, the lens is stably fixed.
This avoids the problem of lenses not being firmly attached, ensuring that the lenses do not change position during processing, thus improving processing quality and wearing comfort.
Smart Images
Figure CN223558398U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lens processing technology field especially relates to a lens processing frock. BACKGROUND
[0002] Ortho-K contact lenses (OK lenses for short) are a special kind of rigid gas permeable contact lenses. They are mainly used to temporarily change the shape of the cornea to improve vision problems, especially to correct myopia and a certain degree of astigmatism.
[0003] The existing OK lens processing frock is a fixed frock, and the taking and placing error is large by half artificial and half mechanical taking and placing. When the error between the lens and the frock exceeds 0.01, the lens will deviate to cause the lens edge to be not the same thickness and be uncomfortable to wear, and the error will cause the lens to be seriously broken. In addition, the error between the lens and the frock will also cause the lens to be not centered, and the lens position is prone to deviation, thereby causing the diopter error and being uncomfortable to wear. UTILITY MODEL CONTENTS
[0004] The utility model provides a kind of lens processing frock to solve the defect of taking and placing error being large, being not centered and being prone to deviation of lens processing frock in prior art.
[0005] The utility model provides a kind of lens processing frock, it includes: processing table, the processing table is formed with air passage and the table surface for placing lens to be processed, the table surface is formed with first air hole, the first air hole is connected with pressure equipment by the air passage, so that the table surface and the negative pressure between lens to be processed are formed, to make lens to be processed adhere to the table surface.
[0006] According to the lens processing frock provided by the utility model, the limiting convex platform is formed on the processing table, the limiting recess for limiting lens to be processed is formed on the inner side of the limiting convex platform, and the limiting recess is arranged circumferentially around the first air hole.
[0007] According to the lens processing frock provided by the utility model, the limiting convex platform is annular convex platform, and is circumferentially arranged around the first air hole as center.
[0008] According to the lens processing frock provided by the utility model, the limiting convex platform includes a plurality of arc springs, a plurality of the arc springs are circumferentially arranged around the first air hole as center, and a gap is formed between adjacent two arc springs.
[0009] According to the lens processing frock provided by the utility model, it further includes: a capsule made of elastic material, the first air hole is communicated with the capsule, and the second air hole is formed on the capsule.
[0010] When the pressure device provides negative pressure, the capsule body shrinks and provides negative pressure for the lens to be processed through the second air hole, so that the lens to be processed is attached to the table top;
[0011] When the pressure device provides positive pressure, the capsule body expands and pushes the lens off the table top.
[0012] According to the lens processing tool provided by the utility model, the limiting groove is a stepped limiting groove.
[0013] According to the lens processing tool provided by the utility model, a plurality of second air holes are formed on the capsule body.
[0014] According to the lens processing tool provided by the utility model, an air hole adjusting piece is further included; a through hole is formed on the processing table in the radial direction, one end of the through hole is communicated with the first air hole, and the air hole adjusting piece is movably inserted into the through hole; the flow area of the first air hole is adjusted by moving the air hole adjusting piece.
[0015] According to the lens processing tool provided by the utility model, the through hole is a threaded hole, and the air hole adjusting piece is a bolt; the bolt is engaged with the threaded hole.
[0016] According to the lens processing tool provided by the utility model, a plurality of layers of annular convex lines are formed on the table top.
[0017] The lens processing tool provided by the utility model comprises a processing table; an air passage and a table top for placing a lens to be processed are formed on the processing table; a first air hole is formed on the table top; the first air hole is connected with a pressure device through the air passage; negative pressure is formed between the table top and the lens to be processed, so that the lens to be processed is attached to the table top. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0019] Figure 1is a perspective view of the lens processing tool provided in the embodiment 1 of the utility model.
[0020] Figure 2 is a longitudinal section view of the lens processing tool provided in the embodiment 1 of the utility model.
[0021] Figure 3 is a perspective view of the lens processing tool provided in the embodiment 2 of the utility model.
[0022] Figure 4 is a longitudinal section view of the lens processing tool provided in the embodiment 2 of the utility model.
[0023] Figure 5 is a perspective view of the lens processing tool provided in the embodiment 3 of the utility model.
[0024] Figure 6 is a longitudinal section view of the lens processing tool provided in the embodiment 3 of the utility model.
[0025] Figure 7 is a perspective view of the lens processing tool provided in the embodiment 4 of the utility model.
[0026] Figure 8 is a longitudinal section view of the lens processing tool provided in the embodiment 4 of the utility model.
[0027] Figure 9 is a perspective view of the lens processing tool provided in the embodiment 5 of the utility model.
[0028] Figure 10 is a longitudinal section view of the lens processing tool provided in the embodiment 5 of the utility model.
[0029] Figure 11 is a perspective view of the lens processing tool provided in the embodiment 6 of the utility model.
[0030] Figure 12 is a longitudinal section view of the lens processing tool provided in the embodiment 6 of the utility model.
[0031] Reference signs:
[0032] 1, processing table;2, air passage;3, first air hole;4, annular boss;5, arc spring;6, gap;7, capsule;8, second air hole;9, stepped limiting groove;10, air hole adjusting piece;11, annular convex grain. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings in the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0034] In the description of the present embodiment, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present embodiment and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present embodiment.
[0035] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present embodiment, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0036] In the present embodiment, unless otherwise specifically specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For the ordinary skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.
[0037] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature can be "under", "below" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0038] The following will be described in combination with Figures 1-12 The lens processing tool of the present application is described in the following embodiments, which is mainly used for rigid gas permeable contact lenses for corneal molding (i.e. OK lenses), but is not limited thereto. The lens processing tool of the present application is also applicable to other lenses, such as the lenses of frame glasses; for example, the lens is preferably a contact lens, which can be a soft contact lens, a rigid contact lens or a hybrid contact lens, wherein the rigid contact lens includes a rigid non-gas permeable contact lens, a rigid gas permeable contact lens or a corneal molding lens (i.e. the aforementioned or the OK lens mentioned in the embodiments); for example, the lens can be a scleral contact lens.
[0039] Specifically, the lens processing tool comprises a processing table 1. The processing table 1 is formed with an air passage 2 and a table surface for placing the lens to be processed, and the table surface is formed with a first air hole 3, which is connected with a pressure device through the air passage 2, so that a negative pressure is formed between the table surface and the lens to be processed, so that the lens to be processed is attached to the table surface.
[0040] Specifically, the processing table 1 is in a cylindrical structure, the air passage 2 is located in the interior of the processing table 1 and penetrates from the top to the bottom of the processing table 1, and the table surface is located at the top of the processing table 1 and is used for placing the lens to be processed. The lens processing tool of the present application is preferably applicable to the lens processing of OK lenses, and the table surface is used for placing the OK lens.
[0041] After the lens is placed, the pressure device is turned on to form a negative pressure in the air passage 2 by using a vacuum pump, and the negative pressure formed by the first air hole 3 in contact with the lens makes the lens attached to the table surface. It can be understood that the pressure device can be a vacuum pump.
[0042] The utility model provides a kind of lens processing frock relying on vacuum adsorption, and the frock material quality is preferably polyformaldehyde material, vacuum adsorption air pressure is set at about-0.1MPA, ensure that material lens can and frock completely adhere to the effect of fixed effect.
[0043] The utility model provides a kind of lens processing frock, it includes: processing table 1. Formed with air passage 2 and the table surface for placing lens to be processed on processing table 1, first air hole 3 is formed on the table surface, and first air hole 3 is connected with pressure equipment by air passage 2, so that negative pressure is formed between the table surface and the lens to be processed, so that the lens to be processed is adhered on the table surface. The utility model provides a kind of lens processing frock, by the way of vacuum adsorption, can be omitted using double-sided tape fixed, avoid not firm, the material piece position change generated in processing;And, can be adjusted by the working state of pressure equipment, the installation and dismounting of lens are facilitated, the working pressure of pressure equipment can also be adjusted, so as to adjust the adsorption degree of lens, meet the needs of various processing conditions.
[0044] In one embodiment of the utility model, a limiting boss is formed on the processing table 1, a limiting groove for limiting the lens to be processed is formed on the inner side of the limiting boss, and the limiting groove is circumferentially arranged around the first air hole 3.
[0045] Embodiment 1:
[0046] As shown in Figure 1 and Figure 2 , the limiting boss in the embodiment is an annular boss 4, which is circumferentially arranged around the first air hole 3 as the center. The annular boss 4 is located at the top of the table surface and protrudes upward, thereby forming a limiting groove on the inner side. The lens to be processed is placed in the limiting groove, thereby being circumferentially limited, ensuring that the lens is centered and avoiding deviation, and ensuring the quality of lens processing.
[0047] Embodiment 2:
[0048] As shown in Figure 3 and Figure 4 , the limiting boss in the embodiment includes a plurality of arc-shaped elastic pieces 5, which are circumferentially arranged around the first air hole 3 as the center, and a gap 6 is formed between adjacent two arc-shaped elastic pieces 5.
[0049] The difference between the embodiment and the embodiment 1 is that the embodiment adopts a closed locking structure composed of a plurality of arc-shaped elastic pieces 5. When no lens is placed, the gap 6 of each arc-shaped elastic piece 5 is small. When the lens is placed into the limiting groove, each arc-shaped elastic piece 5 limits and presses the lens in the circumferential direction, and the gap 6 of each arc-shaped elastic piece 5 is slightly increased. The arc-shaped elastic piece 5 is pressed against the lens by applying an external force. The arc-shaped elastic piece 5 of the embodiment also has the function of limiting the lens in the circumferential direction, ensures that the lens is centered, avoids the lens from being deviated, and ensures the processing quality of the lens.
[0050] Embodiment 3
[0051] On the basis of the embodiment 1, the lens processing tool of the embodiment further comprises a capsule 7 made of elastic material. The first air hole 3 is in communication with the capsule 7, and the second air hole 8 is formed on the capsule 7.
[0052] As shown in Figure 5 and Figure 6 , in the embodiment, a capsule 7 is arranged on the table top, which is in communication with the first air hole 3 and is provided with the second air hole 8. Different from the above-mentioned embodiments is that the second air hole 8 is in contact with the lens. When the pressure device provides negative pressure, the capsule 7 shrinks and provides negative pressure for the lens to be processed through the second air hole 8, so that the lens to be processed is attached to the table top. When the pressure device provides positive pressure, the capsule 7 expands and pushes the lens out of the table top.
[0053] It can be seen that the pressure device in the embodiment can provide both positive pressure and negative pressure. When negative pressure is provided, the capsule 7 shrinks and is adsorbed on the table top, and provides negative pressure for the lens through the second air hole 8. When the lens needs to be taken off the table top, the pressure device provides positive pressure, and the capsule 7 expands and pushes the lens out of the limiting groove. The capsule 7 in the embodiment has the function of blowing and sucking air. After processing is completed, air is blown to facilitate the lens to be taken off the tool.
[0054] Embodiment 4
[0055] On the basis of the embodiment 3, the limiting groove of the embodiment is a stepped limiting groove 9.
[0056] As shown in Figure 7 and Figure 8 , the stepped limiting groove 9 formed on the processing table 1 of the embodiment constitutes limiting grooves of different sizes, which can limit the lens in the circumferential direction for lenses of different sizes, thereby meeting the processing needs of lenses of different sizes.
[0057] Embodiment 5
[0058] On the basis of the embodiment 4, a plurality of second air holes 8 are formed on the capsule 7.
[0059] AsFigure 9 and Figure 10 As shown in FIG. 7, due to the capsule 7 in the process of contraction, the second vent hole 8 can be deviated from the center, resulting in poor adsorption effect with the lens. Therefore, the embodiment is processed with multiple second vent holes 8 on the capsule 7, thereby ensuring the adsorption effect with the lens.
[0060] Preferably, two second vent holes 8 are arranged on the capsule 7, and the two vent holes are symmetrically arranged along the center line of the capsule 7.
[0061] Preferably, the first vent hole 3 corresponding to the second vent hole 8 and the vent passage 2 are arranged in the same number, that is, two second vent holes 8, first vent holes 3 and vent passages 2 are arranged respectively.
[0062] Embodiment 6:
[0063] The processing table 1 in the embodiment is not provided with a limiting boss.
[0064] The lens processing tool in the embodiment comprises a vent hole adjusting piece 10; a through hole is formed on the processing table 1 in the radial direction, and one end of the through hole is in communication with the first vent hole 3; the vent hole adjusting piece 10 is movably inserted into the through hole, and the flow area of the first vent hole 3 is adjusted by moving the vent hole adjusting piece 10.
[0065] As shown in FIG. 8, by laterally opening a hole (i.e. a through hole) on the processing table 1 and making it in communication with the first vent hole 3, the flow area of the first vent hole 3 is adjusted by moving the vent hole adjusting piece 10 in the through hole. For example: when the vent hole adjusting piece 10 is completely inserted, since the vent hole adjusting piece 10 closes the flow passage of the first vent hole 3, no negative pressure is generated; as the vent hole adjusting piece 10 is pulled out, the flow area of the first vent hole 3 gradually increases, and the adsorption force on the lens can be adjusted. Figure 11 and 12 As shown in FIG. 8, by laterally opening a hole (i.e. a through hole) on the processing table 1 and making it in communication with the first vent hole 3, the flow area of the first vent hole 3 is adjusted by moving the vent hole adjusting piece 10 in the through hole. For example: when the vent hole adjusting piece 10 is completely inserted, since the vent hole adjusting piece 10 closes the flow passage of the first vent hole 3, no negative pressure is generated; as the vent hole adjusting piece 10 is pulled out, the flow area of the first vent hole 3 gradually increases, and the adsorption force on the lens can be adjusted.
[0066] It can be understood that the vent hole adjusting piece 10 in the embodiment is similar to an adjusting valve, which controls the flow area of the first vent hole 3.
[0067] Preferably, the through hole is a threaded hole, and the vent hole adjusting piece 10 is a bolt, which is engaged with the threaded hole. By rotating the bolt, the radial movement of the bolt in the threaded hole can be realized, thereby adjusting the flow area of the first vent hole 3.
[0068] Preferably, multiple layers of annular raised lines 11 are formed on the table top. Since the limiting boss is not provided in the embodiment, the multiple layers of annular raised lines 11 are designed on the table top, the roughness of the contact surface is increased to increase the friction between the lens and the table top, thereby ensuring the centering of the lens and avoiding the deviation of the lens.
[0069] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.
[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A lens processing tool, characterized by, The utility model relates to a processing table (1) which is provided with an air passage (2) and a table top for placing a lens to be processed, the table top is provided with a first air hole (3) which is connected with a pressure device through the air passage (2) to form a negative pressure between the table top and the lens to be processed so that the lens to be processed is attached to the table top. A limiting convex is formed on the processing table (1), a limiting recess for limiting the lens to be processed is formed inside the limiting convex, and the limiting recess is circumferentially arranged around the first air hole (3).
2. The lens processing tooling of claim 1, wherein, The limiting convex is an annular convex (4) which is circumferentially arranged around the first air hole (3) as the center.
3. The lens processing tooling of claim 2, wherein, The limiting convex includes a plurality of arc-shaped elastic pieces (5) which are circumferentially arranged around the first air hole (3) as the center, and a gap (6) is formed between two adjacent arc-shaped elastic pieces (5).
4. The lens processing tooling of claim 2, wherein, The utility model further relates to:
5. The lens processing tooling of claim 2 or 3, wherein, A capsule (7) made of elastic material, the first air hole (3) is communicated with the capsule (7), and the capsule (7) is provided with a second air hole (8); When the pressure device provides a negative pressure, the capsule (7) shrinks and provides a negative pressure for the lens to be processed through the second air hole (8) so that the lens to be processed is attached to the table top; When the pressure device provides a positive pressure, the capsule (7) expands and pushes the lens out of the table top. The limiting recess is a stepped limiting groove (9).
6. The lens processing tooling of claim 2, wherein, A plurality of second air holes (8) are formed on the capsule (7).
7. The lens processing tooling of claim 5, wherein, The utility model further relates to:
8. The lens processing tool of claim 1, wherein, An air hole adjusting member (10), a through hole is formed on the processing table (1) in the radial direction, one end of the through hole is communicated with the first air hole (3), and the air hole adjusting member (10) is movably inserted into the through hole, and the flow area of the first air hole (3) is adjusted by moving the air hole adjusting member (10). The through hole is a threaded hole, and the air hole adjusting member (10) is a bolt which is engaged with the threaded hole.
9. The lens processing tool of claim 8, wherein, A plurality of annular raised lines (11) are formed on the table top.
10. The lens processing tool of claim 1 or 8, wherein,