Contact lens hydration tray device

Abstract

The utility model relates to the field of contact lens processing, specifically a contact lens hydration tray device, including multiple layers of trays stacked on each other, with multiple material grids distributed on the trays; the material grid includes multiple baffles arranged at the upper end of the tray and arranged in a ring, and a hemispherical cavity concave toward the lower end of the tray; a gap is formed between the multiple baffles; the cavity is used to place contact lens, and the bottom thereof is provided with multiple first through holes arranged along the circumference, and the lower end edge thereof forms an annular boss; when multiple trays are stacked, the boss on the upper tray is clamped on the inner circle of the baffle on the lower tray. No special alignment is required when stacking multiple trays, and the boss and the baffle only need to be interlocked; the design of the support strips and grooves in the cavity reduces the contact area between the lens and the inside of the cavity, making the internal and external water flow smoother, while also avoiding the adhesion of the lens to the cavity, reducing the difficulty of taking the lens.

Description

Technical Field

[0001] The utility model relates to the technical field of contact lens processing, in particular to a contact lens hydration disk device. Background Art

[0002] Contact lenses are used to correct vision and protect the eyes. They not only bring great improvements in appearance and convenience to patients with refractive errors such as myopia, hyperopia, astigmatism, etc., but also provide a wide field of vision and realistic vision, which are very popular in the market.

[0003] Contact lenses are a kind of hydrophilic synthetic polymer compounds. The main materials of hydrogel contact lenses are HEMA and some auxiliary materials. After being stirred evenly, they are injected into the lens mold for pressing, and then cured by ultraviolet light. After demolding, the contact lenses are formed. After demolding, the lenses are generally hydrated by soaking in a solution and supplemented by heating. The purpose is to allow the lenses to fully absorb water and become soft contact lenses that are stretchy and soft and suitable for human wear. At the same time, it is also to extract the residues in the lens curing process through hydration to improve the safety and comfort of lens wearing.

[0004] The process of hydrating contact lenses requires the use of a hydration tray as a carrier. The traditional hydration tray device is easy to float out or drift randomly in the carrier tank during hydration, causing lens damage; during the hydration process, the water exchange efficiency inside and outside the hydration tray is low, resulting in incomplete hydration; after hydration, the lens adheres to the bottom of the hydration tray, or the position of the lens in the material grid is greatly offset, making it difficult to remove the lens. Therefore, how to solve the problem of lens hydration in the prior art is a problem that technicians in this field need to consider. Utility Model Content

[0005] The utility model aims to provide a contact lens hydration tray device to solve the problems of lens loss, incomplete hydration and difficulty in taking out during the hydration process of the lens in the prior art.

[0006] The technical solution of the utility model is: a contact lens hydration tray device, comprising a plurality of material trays stacked on each other, wherein a plurality of material grids are distributed on the material tray;

[0007] The material grid includes a plurality of baffles arranged in a ring at the upper end of the material tray, and a hemispherical cavity recessed toward the lower end of the material tray; a gap is formed between the plurality of baffles; the cavity is used to place contact lenses, and a plurality of first through holes are arranged along the circumference at the bottom thereof, and a ring-shaped boss is formed at the lower end edge thereof;

[0008] When a plurality of the material trays are stacked, the boss on the upper material tray is clamped on the inner circle of the baffle on the lower material tray, and the bottom of the boss does not completely cover the gap.

[0009] Preferably, a plurality of second through holes are provided on the material tray, and the second through holes are distributed between the material grids.

[0010] Preferably, a plurality of support blocks spaced apart from each other are disposed downwardly from the lower edge of the material tray, and the height of the support blocks is the same as the height of the baffle.

[0011] Preferably, a protrusion is provided at the center of the lower end of the cavity, and the cross-sectional profile of the protrusion is parabolic.

[0012] Preferably, an annular support bar is provided at the bottom of the cavity, and grooves are formed on both sides of the support bar;

[0013] The first through hole penetrates the support bar and the groove, and divides the support bar and the groove into a plurality of parts that are not connected to each other.

[0014] Preferably, four first through holes are evenly arranged in each cavity, and the support bars and the grooves are divided into four sections.

[0015] Preferably, the number of material grids on each of the material trays is sixty.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] (1) When stacking multiple material trays, no special alignment is required, and the bosses and baffles only need to be engaged with each other. After stacking, the protrusions of the upper material grid can slightly press and fix the lenses in the lower cavity, preventing the lenses from drifting too much during the hydration process, making it easier to remove the lenses later. The design of the support bars and grooves in the cavity reduces the contact area between the lenses and the inside of the cavity, making the water flow inside and outside smoother, while also preventing the lenses from sticking to the cavity, reducing the difficulty of removing the lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of the contact lens hydration disk device of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the contact lens hydration tray device of the utility model;

[0022] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Wherein: a material tray 1, a second through hole 11, and a support block 12;

[0024] The material grid 2 , the baffle 21 , the notch 211 , the cavity 22 , the first through hole 23 , the support bar 24 , the groove 241 , the boss 25 , and the protrusion 26 . DETAILED DESCRIPTION

[0025] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0026] The hydration tray in this application is used for the processing of contact lenses. The hydration tray is not only a container for the lenses after curing and forming, but also a carrier for hydration extraction. During the hydration extraction process, the contact lenses are always in the material grid of the hydration tray. After the hydration extraction is completed, the contact lenses in each material grid are taken out, and the processing of the contact lenses is completed. Specifically, Figure 1 As shown, a contact lens hydration tray device includes a plurality of trays 1 stacked on top of each other, and a plurality of material grids 2 are distributed on the tray 1. In actual processing, in order to avoid the loss of lenses, the topmost tray 1 can only serve as a cover plate, and no lenses can be placed in its material grids 2. The entire hydration tray can be made of PCTG material and formed in one piece by injection molding. The material grids 2 are evenly arranged on the tray 1, and the number is sixty. Of course, the material grids 2 can also be arranged in other forms according to actual production needs or hydration equipment conditions, or each tray 1 can be provided with other numbers of material grids 2.

[0027] like Figure 1-Figure 2 As shown, the material grid 2 includes a plurality of baffles 21 arranged at the upper end of the material tray 1 and arranged in a ring. The baffles 21 are arc-shaped and are spaced apart to form gaps 211 . The plurality of baffles 21 are cylindrical as a whole and surround the upper part of the cavity 22 .

[0028] The material grid 2 also includes a hemispherical cavity 22 which is arranged at the lower end of the material tray 1 and is concave downward. The cavity 22 is used to place contact lenses. A plurality of first through holes 23 are arranged along the circumference at the bottom. The first through holes 23 can be circular holes, waist-shaped holes or holes of other shapes, and the maximum diameter of the first through holes 23 must be at least smaller than the diameter of the contact lens.

[0029] An annular support bar 24 is provided at the bottom of the cavity 22, and grooves 241 are formed on both sides of the support bar 24; the first through hole 23 penetrates the support bar 24 and the groove 241, and divides the support bar 24 and the groove 241 into multiple sections that are not connected to each other. In this embodiment, four first through holes 23 are set in each material grid 2, and are evenly arranged along the circumference, and the support bar 24 and the groove 241 are evenly divided into four sections. Of course, in other embodiments, the first through holes 23 can also be set to other numbers. The design of the support bar 24 supports the lens, which can avoid the adhesion of the lens to the bottom of the cavity 22 after hydration; it can also cooperate with the protrusion 26 to form a slight pressure to fix the lens. The groove 241 can increase the flow of the hydration liquid during the hydration extraction process, thereby ensuring sufficient hydration extraction.

[0030] like Figure 3-Figure 4 As shown, the bottom end of the cavity 22, that is, the end on the tray 1 away from the baffle 21, protrudes from the bottom surface of the tray 1, and its edge forms an annular boss 25, the outer diameter of which is slightly smaller than the diameter of the cylindrical structure formed by the baffle 21. A protrusion 26 is provided at the center of the lower end of the cavity 22, and the cross-sectional profile of the protrusion 26 is parabolic, that is, the end of the protrusion 26 is rounded.

[0031] When multiple trays 1 are stacked, the boss 25 on the upper tray 1 is just stuck on the inner circle of the baffle 21 on the lower tray 1, and the height of the boss 25 is relatively low, not enough to completely cover the notch 211, so that the liquid can flow from the notch 211 during hydration. At the same time, when stacked, the protrusion 26 at the bottom of the upper material grid 2 extends into the cavity 22 of the lower material grid 2, forming a slight pressure on the contact lens in the cavity 22, which has a certain limiting effect on the lens, and the smooth setting of the end of the protrusion 26 can also avoid damage to the lens.

[0032] In order to further increase the exchange and flow capacity of the internal and external liquids during hydration extraction, a plurality of second through holes 11 are provided on the tray 1, and the second through holes 11 are distributed between the material grids 2, so that during hydration extraction, the hydration liquid can quickly flow and exchange through the second through holes 11. In addition, a plurality of mutually spaced support blocks 12 are provided downwardly at the lower edge of the tray 1, and the height of the support blocks 12 is the same as the height of the baffle 21. When multiple trays 1 are stacked, the support blocks 12 on the upper tray 1 just contact the upper surface of the lower tray 1, which further supports the tray 1; at the same time, the spacing of the support blocks 12 further increases the ability of the spray liquid to flow inside and outside, and further increases the reliability of the hydration process.

[0033] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A contact lens hydration tray device, characterized in that: It comprises a plurality of material trays stacked on each other, wherein a plurality of material grids are distributed on the material tray; The material grid includes a plurality of baffles arranged in a ring at the upper end of the material tray, and a hemispherical cavity recessed toward the lower end of the material tray; a gap is formed between the plurality of baffles; the cavity is used to place contact lenses, and a plurality of first through holes are arranged along the circumference at the bottom thereof, and a ring-shaped boss is formed at the lower end edge thereof; When a plurality of the material trays are stacked, the boss on the upper material tray is clamped on the inner circle of the baffle on the lower material tray, and the bottom of the boss does not completely cover the gap.

2. A contact lens hydration tray device according to claim 1, characterized in that: The material tray is provided with a plurality of second through holes, and the second through holes are distributed between the material grids.

3. A contact lens hydration tray device according to claim 1, characterized in that: A plurality of support blocks spaced apart from each other are arranged downwardly from the lower edge of the material tray, and the height of the support blocks is the same as the height of the baffle.

4. A contact lens hydration tray device according to claim 1, characterized in that: A protrusion is arranged at the center of the lower end of the cavity, and the cross-sectional profile of the protrusion is parabolic.

5. The contact lens hydration tray device according to claim 1, characterized in that: The bottom of the cavity is provided with an annular support bar, and grooves are formed on both sides of the support bar; The first through hole penetrates the support bar and the groove, and divides the support bar and the groove into a plurality of parts that are not connected to each other.

6. A contact lens hydration tray device according to claim 5, characterized in that: Four first through holes are evenly arranged in each cavity, and the support bar and the groove are divided into four sections.

7. A contact lens hydration tray device according to claim 1, characterized in that: The number of material grids on each of the material trays is sixty.

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