A type of indexed shell mold

Abstract

This utility model relates to the field of contact lens packaging mold technology, and discloses a graduated shell mold, including a male shell mold and a female shell mold that cooperate with each other; the male shell mold has an angle marking area on its periphery, which has at least one zero point mark and multiple graduation marks, and the interval angle between adjacent graduation marks is 5°-360°, forming a clear and intuitive angle scale system; the female shell mold is equipped with a power pointer that corresponds precisely to the angle marking area of ​​the male shell mold; this utility model has a liquid injection hole and a vent hole, and air is discharged through an inert gas replacement process, which solves the problems of inefficient power identification and lens oxidation in existing shell molds. It is suitable for the precise packaging of contact lenses, and the lens parameters in a single shell mold can be quickly identified by the intuitive alignment of the power pointer and the graduation marks.

Description

Technical Field

[0001] This utility model relates to the field of contact lens packaging mold technology, specifically a scaled shell mold. Background Technology

[0002] Contact lens lenses require encapsulation and transport via mold during production. Early molds only provided basic sealing; however, with increasing market demand for refined lens management, batch numbers were gradually introduced to differentiate lens parameters. However, traditional molds have the following drawbacks: relying on batch numbers to identify lens prescriptions requires manual verification, which is time-consuming and error-prone, especially in identifying mixed materials; air can easily remain inside the mold after encapsulation, leading to lens oxidation. Current technology uses a protective fluid to expel this air, but simple fluid injection cannot completely remove all air, leaving a risk of oxidation. Therefore, a prescription mold with integrated design is needed to achieve rapid identification of lens parameters and efficient air removal from the mold. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a lens housing with a graduation design, which has the advantages of enabling rapid identification of lens parameters and efficient air removal from the housing through structural innovation, thus solving the problems of inefficient prescription identification and lens oxidation in existing technologies.

[0004] To achieve the aforementioned goal of rapidly identifying lens parameters and efficiently expelling air from the shell through structural innovation, this utility model provides the following technical solution: a graduated shell mold, comprising a male shell mold and a female shell mold that cooperate with each other; the male shell mold has an angle marking area on its periphery, which has at least one zero point mark and multiple graduation marks, with an interval angle between adjacent graduation marks of 5°-360°, forming a clear and intuitive angle scale system; the female shell mold is equipped with a degree pointer that precisely corresponds to the angle marking area of ​​the male shell mold.

[0005] Preferably, the graduation marking of the angle marking area is a 0-360 degree circular scale, with the angle marking area precisely divided at 20-degree intervals.

[0006] Preferably, the male shell mold is provided with a liquid injection hole and a vent hole, both of which are directly connected to the internal molding space of the shell mold.

[0007] Preferably, in the partially closed state of the male and female shell molds, the injection hole and the vent hole form a through airflow channel.

[0008] Preferably, the degree pointer of the female shell mold is a raised structure or a color mark, and the angle marking area of ​​the male shell mold is a scale line or a number mark.

[0009] Preferably, the male and female shell molds are provided with positioning structures.

[0010] Preferably, the shell mold material is transparent or semi-transparent plastic.

[0011] Preferably, a miniature vision camera is provided at the top of the interior of the mother shell mold.

[0012] Preferably, the diameter of the vent hole is smaller than the diameter of the injection hole, and a one-way valve is provided in the vent hole to prevent liquid backflow.

[0013] Compared with the prior art, the present invention provides a shell mold with indexing, which has the following beneficial effects:

[0014] 1. This graduated shell mold can quickly identify the lens parameters within a single shell mold by intuitively aligning the power pointer with the graduation mark. During material mixing, the visual inspection module automatically alarms, improving the identification efficiency by more than 80%.

[0015] 2. This indexing shell mold, through inert gas replacement process and exhaust hole design, reduces the oxygen content inside the shell to below 0.1%, significantly reducing the risk of lens oxidation and extending the shelf life by 30%. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mother shell mold structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure above the male shell mold of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the male shell mold of this utility model.

[0020] In the diagram: 1. Female shell mold; 11. Degree pointer; 12. Miniature vision camera; 2. Male shell mold; 21. Angle marking area; 22. Zero point mark; 23. Injection hole; 24. Vent hole; 25. Indexing mark; 3. Positioning structure. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1-4As shown, a graduated shell mold includes a male shell mold 2 and a female shell mold 1 that cooperate with each other. The male shell mold 2 has an angle marking area 21 on its periphery, which has at least one zero point mark 22 and multiple graduation marks 25. The interval angle between adjacent graduation marks 25 is 5°-360°, forming a clear and intuitive angle scale system. The female shell mold 1 is equipped with a degree pointer 11, which corresponds precisely to the angle marking area 21 of the male shell mold 2. When the male shell mold 2 and the female shell mold 1 complete the mold closing operation, the degree pointer 11 will accurately point to the corresponding graduation mark 25, thereby intuitively and accurately identifying the key parameters of the lens inside the mold, ensuring that the parameter setting and quality control in the lens production process are based on evidence, and greatly improving the standardization and accuracy of lens manufacturing.

[0023] like Figure 3 As shown, the graduation marks 25 of the angle marking area 21 are a 0-360 degree circular scale, precisely dividing the angle marking area 21 with equal intervals of 20 degrees; forming a complete closed-loop angle marking system. This uniformly distributed scale setting not only ensures the fine control of angle parameter adjustment, but also facilitates quick reading and accurate positioning by operators, providing a clear and intuitive quantitative reference for the standardized setting and verification of lens parameters.

[0024] like Figure 3 and Figure 4 As shown, the male shell mold 2 is provided with a liquid injection hole 23 and a vent hole 24, both of which are directly connected to the internal molding space of the shell mold. The liquid injection hole 23 can flexibly inject protective liquid or inert gas to meet the internal environment requirements of different processes. The vent hole 24 is used to quickly expel air from the shell mold to avoid air residue forming bubbles or air cavities, ensuring a clean and controllable internal environment, creating stable and high-quality process conditions for lens molding, and effectively improving the product yield.

[0025] Furthermore, in the semi-closed state of the male shell mold 2 and the female shell mold 1, the injection hole 23 and the vent hole 24 form a through airflow channel; this channel can realize a staged gas and liquid replacement process: first, inert gas is injected through the injection hole 23, and the air inside the shell mold is quickly discharged through the vent hole 24 by using the pressure difference, forming a pure inert environment; then the process is switched, and protective liquid is injected through the same injection hole 23. The protective liquid fills the shell mold space along the airflow channel path, completing the orderly replacement of gas and liquid, ensuring that there is no residual air in the lens forming cavity, and providing stable and pollution-free process conditions for lens forming.

[0026] like Figure 2 and Figure 3As shown, the power indicator 11 of the female mold 1 is a raised structure or color mark, while the angle marking area 21 of the male mold 2 is a scale line or numerical mark; this ensures clear identification under different lighting and operating angles. Correspondingly, the angle marking area 21 of the male mold 2 uses fine scale lines combined with numerical marks to form an intuitive and clear parameter indication system. The two marking methods complement each other; the raised structure or color mark facilitates quick positioning and reference, while the scale line and numerical mark provide accurate quantitative readings, together achieving efficient and accurate labeling of lens parameters; specifically, the power indicator 11 of the female mold 1 is a raised structure, and the angle marking area 21 of the male mold 2 is a scale line.

[0027] like Figure 1 As shown, the male shell mold 2 and the female shell mold 1 are equipped with a positioning structure 3, which enables millimeter-level precise alignment during the mold closing process. The positioning structure 3 can effectively eliminate assembly errors and ensure zero-deviation correspondence between the diopter pointer 11 of the female shell mold 1 and the graduation mark 25 of the angle marking area 21 of the male shell mold 2. This provides a reliable guarantee for the accurate marking of lens parameters and significantly improves mold assembly efficiency and lens production consistency.

[0028] Furthermore, the shell mold is made of transparent or semi-transparent plastic; thanks to its excellent optical transparency, operators can visually observe the alignment of the diopter pointer 11 and the graduation mark 25 from multiple angles and directions during the mold assembly process without the need for auxiliary tools. This material design not only simplifies the operation process but also allows for intuitive and rapid confirmation of assembly accuracy, greatly improving the convenience and accuracy of parameter calibration during lens production.

[0029] like Figure 2 As shown, a miniature vision camera 12 is installed at the top of the interior of the mother mold 1; it employs high-precision image recognition and intelligent algorithms to achieve dual quality monitoring functions. On the one hand, by capturing the relative positional relationship between the power pointer 11 and the graduation mark 25, it automatically identifies and analyzes the astigmatism power of the lens, ensuring parameter accuracy; on the other hand, it scans the material status inside the mold in real time, quickly detects material mixing through image feature analysis, and triggers an alarm immediately upon detecting an anomaly, effectively avoiding product quality problems caused by material mixing, and providing full-process, intelligent quality control assurance for lens production.

[0030] like Figure 3 and Figure 4As shown, the diameter of the vent 24 is smaller than that of the injection port 23, and a one-way valve is installed inside the vent 24 to prevent liquid backflow. Precise dimensional matching ensures rapid gas discharge while effectively limiting the liquid flow rate. Simultaneously, the vent 24 integrates a one-way valve structure with automatic opening and closing function. When protective fluid is injected, the one-way valve automatically closes under liquid pressure, forming a reliable sealing barrier to prevent liquid backflow, ensuring the stability and safety of the process, and providing reliable fluid control for the lens forming process.

[0031] Example 2: High-density indexing shell mold

[0032] Grading optimization: The graduation interval of the male shell mold 2 is adjusted to 10 degrees, which is suitable for high-precision astigmatic lenses (such as products with an axial accuracy of ±5°), and can be used with a high-resolution vision inspection module to achieve accurate parameter recognition.

[0033] Working principle: The lens is placed in the groove of the female shell mold 1, and the male shell mold 2 is pre-closed with the female shell mold 1 (leaving a 1mm gap); nitrogen gas is injected through the injection hole 23 at a pressure of 0.5MPa for 5 seconds, and the mixed gas is discharged through the vent hole 24; the injection needle is inserted into the injection hole 23 to inject contact lens solution until the liquid surface covers the lens, and at the same time, nitrogen gas is discharged through the vent hole 24; the mold is fully closed, and the alignment of the scale is photographed through the visual camera. Qualified products proceed to the next process.

[0034] In summary, this graduated housing mold can quickly identify lens parameters within a single housing mold by visually aligning the power pointer 11 with the graduation mark 25. During material mixing, the visual inspection module automatically alarms, improving identification efficiency by over 80%. Through an inert gas replacement process combined with the design of the exhaust vent 24, the oxygen content inside the housing is reduced to below 0.1%, significantly reducing the risk of lens oxidation and extending the shelf life by 30%.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of indexed shell mold, characterized in that: It includes a male shell mold and a female shell mold that cooperate with each other; the male shell mold has an angle marking area on its periphery, which has at least one zero point mark and multiple graduation marks. The interval between adjacent graduation marks is 5°-360°, forming a clear and intuitive angle scale system. The female shell mold is equipped with a degree pointer that corresponds precisely to the angle marking area of ​​the male shell mold.

2. The indexing shell mold according to claim 1, characterized in that: The angle marking area is marked with a 0-360 degree circular scale, and the angle marking area is precisely divided with equal intervals of 20 degrees.

3. The indexing shell mold according to claim 1, characterized in that: The male shell mold is equipped with a liquid injection hole and a vent hole, both of which are directly connected to the internal molding space of the shell mold.

4. A type of indexing shell mold according to claim 3, characterized in that: When the male and female shell molds are in a semi-closed state, the injection hole and the vent hole form a through airflow channel.

5. A type of indexing shell mold according to claim 1, characterized in that: The degree pointer of the female shell mold is a raised structure or a color mark, and the angle marking area of ​​the male shell mold is a scale line or a number mark.

6. A type of indexed shell mold according to claim 1, characterized in that: The male and female shell molds are equipped with positioning structures.

7. A type of indexing shell mold according to claim 1, characterized in that: The shell mold is made of transparent or semi-transparent plastic.

8. A type of indexing shell mold according to claim 1, characterized in that: A miniature vision camera is installed at the top of the interior of the mother shell mold.

9. A type of indexing shell mold according to claim 3, characterized in that: The diameter of the vent hole is smaller than that of the injection hole, and a one-way valve is provided inside the vent hole to prevent liquid backflow.

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