Lens processing method

Abstract

The invention relates to the technical field of lens production, and particularly discloses a lens processing method which comprises the steps of injection molding, first turnover, first milling, second turnover, hardening, third turnover, film coating, fourth turnover and second milling. When the lens processing method is used for producing the lens, a protective film does not need to be pasted in the second-time turnover process, the third-time turnover process and the fourth-time turnover process, the production process of the lens is simplified, glue on the protective film can be prevented from remaining on the lens, and the production quality of the lens is high.

Description

Lens processing methods Technical Field

[0001] This invention relates to the field of lens manufacturing technology, and in particular to a lens processing method. Background Technology

[0002] Traditional lens manufacturing typically involves several steps, including injection molding, applying a protective film, milling the sprue, removing the protective film, cleaning, hardening, and coating. During injection molding, ejector pins or mold cores are used to eject the formed lens. Ejector pin ejection is unsuitable for lenses with optical surfaces on both sides, and mold core ejection can lead to air trapping, resulting in poor lens quality. For high-curvature freeform lenses, precise milling of the sprue is difficult, leading to poor milling accuracy. For lenses with optical surfaces on both sides, after cleaning, protective films are applied to both sides before the lens is transferred to the hardening process. The protective film is then removed during hardening, and then reapplied before the lens is transferred to the coating process. Finally, the protective film is removed during coating to form the finished product. This frequent application and removal of protective films, while providing some protection, makes the production process cumbersome, inefficient, and prone to leaving adhesive residue from the protective film on the lens, affecting its quality.

[0003] Therefore, there is an urgent need to propose a lens processing method to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides a lens processing method that eliminates the need for applying a protective film during lens turnover, simplifying the lens production process, preventing adhesive residue from the protective film from remaining on the lens, and resulting in higher lens production quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Lens processing methods include the following steps:

[0007] Injection molding: a semi-finished lens is formed by injection molding and then demolded; the semi-finished lens includes a lens body and connecting ears provided on both sides of the lens body;

[0008] First turnover: The semi-finished lens is transferred to the first milling process;

[0009] First milling: The semi-finished lens is transferred to the lens cutting fixture and fixed through the connecting ear. The lens cutting fixture positions the semi-finished lens through the connecting ear. After fixing the semi-finished lens, the excess glue at the glue inlet on the lens body is cut off.

[0010] Second turnover: The cut semi-finished lens is transferred to the hardening process through the connecting ear;

[0011] Hardening: The semi-finished lens is suspended on the lens hardening device through the connecting ear, so that the semi-finished lens is immersed in the hardening liquid by suspension, and then the semi-finished lens that has been immersed in the hardening liquid is dried.

[0012] The third transfer: The dried semi-finished lens is transferred to the coating process via the connecting ear;

[0013] Coating: The semi-finished lens is transferred to the lens coating fixture through the connecting ear. The lens coating fixture can fix the semi-finished lens through the connecting ear. After the semi-finished lens is fixed, the lens body is coated to form the finished lens.

[0014] Fourth turnover: The finished lens is transferred to the second milling process via the connecting ear;

[0015] Second milling: The finished lens is transferred to the lens cutting fixture through the connecting ears. The lens cutting fixture positions the finished lens through the connecting ears and cuts off the two connecting ears after fixing the finished lens.

[0016] Optionally, the demolding process includes applying an ejector pin to the connecting lug to eject the semi-finished lens from the mold.

[0017] Optionally, the lens cutting fixture includes a cutting fixture body, the cutting fixture body is provided with a lens receiving groove and positioning posts placed on both sides of the lens receiving groove, the lens receiving groove is provided with a vacuum hole, and the connecting ear is provided with a connecting hole;

[0018] The specific steps for positioning the semi-finished lens using the lens cutting fixture via the connecting ear include:

[0019] Clamp the two connecting ears and move the semi-finished lens to directly above the cutting fixture body, so that the lens body is opposite to the lens receiving groove, and the two connecting holes are opposite to the two positioning pins respectively. Then move the semi-finished lens downward so that the lens body is placed in the lens receiving groove, and the positioning pin is inserted into the corresponding connecting hole.

[0020] The lens body is adsorbed into the lens receiving groove through the vacuum hole using a vacuum pump.

[0021] Optionally, the lens cutting fixture further includes a debris-blocking component, and the specific steps of positioning the semi-finished lens product by the lens cutting fixture through the connecting ear further include: covering the optical surface of the lens body opposite to the bottom of the slot of the lens receiving groove with the debris-blocking component.

[0022] Optionally, the lens semi-finished product is turned over by a lens turnover fixture. The lens turnover fixture includes a box and a limiting member. The box is provided with a storage slot for accommodating the lens semi-finished product. The limiting member is disposed on opposite sides of the storage slot. The limiting member is provided with multiple slots. The multiple slots on two limiting members are configured one-to-one.

[0023] The specific steps for the second turnover include:

[0024] Clamp the two connecting ears and move the semi-finished lens to the top of the storage slot, so that the two connecting ears are respectively opposite to the two slots. Then move the semi-finished lens downward so that the lens body is placed in the storage slot and the two connecting ears are engaged with the corresponding slots.

[0025] Repeat the above steps until the storage slot is full of the semi-finished lens;

[0026] The lens turnover fixture containing the semi-finished lens is transferred to the hardening process.

[0027] Optionally, in the third turnover, the dried lens semi-finished product is transferred to the coating process via the lens turnover fixture; and / or, in the fourth turnover, the finished lens is transferred to the second milling process via the lens turnover fixture.

[0028] Optionally, the lens hardening device includes an immersion tank and a bracket that can be mounted on the immersion tank. The bracket is provided with a hanging device, the hanging device is provided with a hanging rod, and the connecting ear is provided with a connecting hole.

[0029] The specific steps for suspending the semi-finished lens on the lens hardening device via the connecting ear include:

[0030] Clamp the two connecting lugs, and hang one of the connecting lugs on the hanging rod through the connecting hole;

[0031] Repeat the above steps until the hanging rod is full of the semi-finished lenses;

[0032] The bracket, which is filled with the semi-finished lens products, is placed on the soaking tank so that the semi-finished lens products are immersed in the hardening liquid in the soaking tank.

[0033] Optionally, the lens coating fixture includes a coating fixture body, the coating fixture body is provided with a lens placement area and connecting structures disposed on opposite sides of the lens placement area, the connecting structures being used to fix the connecting ears on the coating fixture body;

[0034] The specific steps for transferring the semi-finished lens to the lens coating fixture via the connecting ear include:

[0035] The lens semi-finished product is moved to directly above the coating fixture body by clamping the two connecting ears, so that the lens body is opposite to the lens placement area, and the two connecting ears are respectively opposite to the two connecting structures. Then the lens semi-finished product is moved downward so that the lens body is placed in the lens placement area, and the connecting structure is connected to the corresponding connecting ear.

[0036] Optionally, the lens placement area is a placement hole that passes through the coating fixture body, and the outer peripheral wall of the lens body is attached to the inner peripheral wall of the placement hole.

[0037] Optionally, the cut lens semi-finished product is cleaned after the first milling process to remove cutting debris from the lens semi-finished product.

[0038] The beneficial effects of this invention are as follows:

[0039] This invention provides a lens processing method, including injection molding, first turnover, first milling, second turnover, hardening, third turnover, coating, fourth turnover, and second milling. By forming the lens semi-finished product into a lens body and connecting ears on both sides of the lens body during injection molding, and by using the connecting ears to rotate the lens, it is unnecessary to apply a protective film to the lens body during the second, third, and fourth turnovers. This eliminates the step of applying the protective film and, consequently, the step of removing the protective film when proceeding to the next process. This simplifies the lens processing steps, improves processing efficiency, and prevents adhesive residue from the protective film from remaining on the lens body, thus improving the quality of the processed lens.

[0040] In the first milling process, a lens cutting fixture is used to position the semi-finished lens by connecting ears. On the one hand, this eliminates the need for the lens cutting fixture to be positioned by the lens body, reducing the risk of the lens body being scratched. On the other hand, the positioning accuracy is higher, and the lens is less likely to shift during the cutting process, thus improving the cutting accuracy of the lens and consequently improving the processing quality of the lens.

[0041] During the curing process, the semi-finished lens is suspended and immersed in the curing liquid using a lens curing device and connecting ears. This prevents the curing liquid from accumulating around the lens body, improving the curing uniformity of the lens. Furthermore, the lens curing device does not need to contact the lens body during the curing process, reducing the risk of the lens body being scratched.

[0042] In the coating process, a lens coating fixture is used to fix the semi-finished lens through connecting ears. Compared with the existing technology of fixing the semi-finished lens through the non-processed area of ​​the lens body, it can achieve full coating of the lens body and has higher versatility. Attached Figure Description

[0043] Figure 1 is a flowchart of the lens processing method provided in an embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of the structure of the lens semi-finished product provided in an embodiment of the present invention;

[0045] Figure 3 is an exploded view of the lens cutting fixture provided in an embodiment of the present invention;

[0046] Figure 4 is an assembly diagram of the lens turnover fixture and the semi-finished lens provided in the embodiment of the present invention;

[0047] Figure 5 is an assembly diagram of the lens hardening device and the semi-finished lens provided in an embodiment of the present invention;

[0048] Figure 6 is an assembly diagram of the lens coating fixture and the semi-finished lens provided in an embodiment of the present invention.

[0049] In the picture:

[0050] 10. Semi-finished lens; 11. Lens body; 12. Connecting ear; 13. Connecting hole;

[0051] 100. Lens cutting fixture; 110. Cutting fixture body; 111. Lens receiving groove; 112. Positioning post; 113. Vacuum hole; 114. Sealing ring; 120. Slag-blocking component;

[0052] 200. Lens handling fixture; 210. Box body; 211. Storage slot; 212. Rib; 220. Limiting component;

[0053] 300. Lens hardening device; 310. Immersion tank; 320. Support; 330. Hanger; 331. Hanging rod; 400. Lens coating fixture; 410. Coating fixture body; 420. Connecting structure. Detailed Implementation

[0054] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0058] This embodiment provides a lens processing method that eliminates the need to attach a protective film during lens turnover, simplifying the lens production process, preventing adhesive residue from the protective film from remaining on the lens, and resulting in higher lens production quality.

[0059] Specifically, as shown in Figure 1, the lens processing method includes the following steps:

[0060] S100, Injection molding: The lens semi-finished product 10 is formed by injection molding and then demolded; the lens semi-finished product 10 includes a lens body 11 and connecting ears 12 provided on both sides of the lens body 11.

[0061] Figure 2 is a schematic diagram of the structure of the semi-finished lens 10, wherein the specific demolding steps include:

[0062] S110. The ejector pin is applied to the connecting ear 12 to eject the semi-finished lens 10 from the mold.

[0063] This design ensures that the lens body 11 does not need to contact the ejector pins during the demolding process of the semi-finished lens 10, making it suitable for demolding lenses with optical surfaces on both sides. Furthermore, by providing connecting ears 12 on both sides of the lens body 11, the colloid used to form the lens is easily filled during injection molding, improving the molding quality of the lens and reducing the risk of lens stringing.

[0064] S200, First Turnover: Transfer the semi-finished lens 10 to the first milling process;

[0065] For the first transfer, the semi-finished lens 10 can be placed directly in the box 210 for transport.

[0066] S300, First milling: The lens semi-finished product 10 is transferred to the lens cutting fixture 100 for fixing through the connecting ear 12. The lens cutting fixture 100 positions the lens semi-finished product 10 through the connecting ear 12. After fixing the lens semi-finished product 10, the excess glue at the glue inlet on the lens body 11 is cut off.

[0067] Using the lens cutting fixture 100 to position the semi-finished lens 10 via the connecting lug 12 eliminates the need for positioning the lens body 11, reducing the risk of scratching it. Furthermore, it provides higher positioning accuracy, preventing lens displacement during cutting and improving overall cutting precision and processing quality. Moreover, the cutting precision of a five-axis cutting machine can be achieved using a three-axis cutting machine, reducing equipment costs.

[0068] Specifically, as shown in Figures 2 and 3, the lens cutting fixture 100 includes a cutting fixture body 110, a lens receiving groove 111 and positioning posts 112 placed on both sides of the lens receiving groove 111, a vacuum hole 113 in the lens receiving groove 111, and a connecting hole 13 on the connecting ear 12.

[0069] The specific steps for positioning the semi-finished lens 10 using the lens cutting fixture 100 via the connecting ear 12 include:

[0070] S310, clamp the two connecting ears 12 and move the lens semi-finished product 10 to directly above the cutting fixture body 110, so that the lens body 11 is opposite to the lens receiving groove 111, and the two connecting holes 13 are opposite to the two positioning pins 112 respectively. Then move the lens semi-finished product 10 downward so that the lens body 11 is placed in the lens receiving groove 111 and the positioning pins 112 are inserted into the corresponding connecting holes 13.

[0071] S320. Use a vacuum device to adsorb the lens body 11 into the lens receiving groove 111 through the vacuum hole 113.

[0072] Optionally, in one possible embodiment, an operator can hold the two connecting ears 12 with both hands. In another possible embodiment, a robotic arm can also be used to hold the two connecting ears 12. In other embodiments, the holding method of the connecting ears 12 can also be other, depending on actual needs, and this application does not impose specific limitations.

[0073] The lens body 11 is fixed by vacuum adsorption, which, compared with the pressing method used in the prior art, avoids direct contact with the lens body 11, reducing the risk of wear on the lens body 11 due to contact and thus improving the production yield of the lens.

[0074] Furthermore, continuing to refer to Figure 3, the lens cutting fixture 100 also includes a slag-blocking component 120.

[0075] The specific steps of positioning the semi-finished lens 10 using the lens cutting fixture 100 via the connecting ear 12 also include:

[0076] S330, Cover the lens body 11 with the slag-blocking member 120 on the optical surface of the lens body 11 away from the bottom of the lens receiving groove 111.

[0077] By providing the debris-blocking component 120, the optical surface of the lens body 11 can be shielded to prevent debris generated during cutting from splashing onto the optical surface of the lens body 11 and scratching the lens, thereby improving the cutting yield of the lens. Furthermore, the debris-blocking component 120 allows the lens cutting fixture 100 to be used for cutting lenses with optical surfaces on both sides. During cutting, there is no need to attach a protective film to the optical surface opposite to the bottom of the lens receiving groove 111, simplifying the cutting process and improving cutting efficiency.

[0078] Optionally, the slag-blocking component 120 can be rotatably connected to the cutting fixture body 110. The structure is simple and facilitates the slag-blocking component 120 to block the optical surface, as well as the removal of the slag-blocking component 120 for lens loading and unloading.

[0079] Furthermore, a sealing ring 114 can be provided in the lens receiving groove 111 so that the lens contacts the sealing ring 114. This can improve the reliability of the lens body 11 being fixed in the lens receiving groove 111 after vacuuming, and can also prevent the lens body 11 from directly contacting the bottom of the lens receiving groove 111, thus reducing the risk of the lens body 11 being scratched.

[0080] Optionally, after the first milling process, the cut lens semi-finished product 10 can be cleaned to remove cutting debris. By incorporating a cleaning process, the hardening quality of the lens during the hardening process can be improved.

[0081] S400, Second Turnover: The cut semi-finished lens 10 is transferred to the hardening process via the connecting ear 12;

[0082] Optionally, the lens semi-finished product 10 can be transferred using a lens turnover fixture 200, as shown in Figure 4. The lens turnover fixture 200 includes a box body 210 and a limiting member 220. The box body 210 is provided with a storage slot 211 for accommodating the lens semi-finished product 10. The limiting member 220 is disposed on opposite sides of the storage slot 211. The limiting member 220 is provided with multiple slots, and the multiple slots on the two limiting members 220 are configured one-to-one.

[0083] The specific steps for the second turnover include:

[0084] S410: Clamp the two connecting ears 12 and move the lens semi-finished product 10 to the top of the storage slot 211, so that the two connecting ears 12 are opposite to the two slots respectively. Then move the lens semi-finished product 10 downward so that the lens body 11 is placed in the storage slot 211 and the two connecting ears 12 are engaged with the corresponding slots.

[0085] S420. Repeat step S410 until the storage slot 211 is full of lens semi-finished products 10.

[0086] S430, the lens turnover fixture 200 containing the semi-finished lens 10 is transferred to the hardening process.

[0087] Optionally, in one possible embodiment, an operator can hold the two connecting ears 12 with both hands. In another possible embodiment, a robotic arm can also be used to hold the two connecting ears 12. In other embodiments, the holding method of the connecting ears 12 can also be other, depending on actual needs, and this application does not impose specific limitations.

[0088] Furthermore, in step S410, the lens can be placed vertically in the storage slot 211. This arrangement allows the lens turnover fixture 200 to hold a larger number of lenses, which is beneficial to improving the turnover efficiency of the lenses.

[0089] Further, referring to Figure 4, multiple parallel and spaced ribs 212 are provided at the bottom of the storage slot 211. Adjacent ribs 212 form a limiting space, which corresponds to the card slot. Each limiting space contains a lens. By setting the ribs 212, the risk of lens shaking during turnover can be reduced, thereby improving the turnover yield of lenses.

[0090] By connecting the ear 12 to rotate the lens, it is not necessary to stick a protective film on the lens body 11 during the second rotation, thus eliminating the step of sticking a protective film. Therefore, the step of removing the protective film is also eliminated when proceeding to the next step. This simplifies the lens processing process, improves the lens processing efficiency, and also avoids the residue of adhesive on the protective film on the lens body 11, thereby improving the lens processing quality.

[0091] S500, Hardening: The semi-finished lens 10 is suspended on the lens hardening device 300 through the connecting ear 12, so that the semi-finished lens 10 is immersed in the hardening liquid by suspension, and then the semi-finished lens 10 immersed in the hardening liquid is dried.

[0092] In the curing process, the lens semi-finished product 10 is immersed in the curing liquid in a suspended manner using the lens curing device 300 and the connecting ear 12, so that the curing liquid will not accumulate around the lens body 11, improving the curing uniformity of the lens. In addition, during the curing process, the lens curing device 300 does not need to contact the lens body 11, reducing the risk of the lens body 11 being scratched.

[0093] Furthermore, as shown in Figures 2 and 5, the lens hardening device 300 includes an immersion tank 310 and a bracket 320 that can be mounted on the immersion tank 310. The bracket 320 is provided with a hanger 330, the hanger 330 is provided with a hanging rod 331, and the connecting ear 12 is provided with a connecting hole 13.

[0094] The specific steps for suspending the semi-finished lens 10 on the lens hardening device 300 via the connecting ear 12 include:

[0095] S510, clamp the two connecting ears 12, and hang one of the connecting ears 12 on the hanging rod 331 through the connecting hole 13;

[0096] S520. Repeat the above steps until the hanging rod 331 is full of semi-finished lens 10.

[0097] S530, The bracket 320 with the lens semi-finished product 10 hanging on it is placed on the soaking tank 310 so that the lens semi-finished product 10 is immersed in the hardening liquid in the soaking tank 310.

[0098] By immersing and hardening lenses in a suspended manner, there is no need to develop special fixtures for large freeform lenses, the hardening cost is low, and a large number of lenses can be immersed at one time, which improves the hardening efficiency.

[0099] During the process of pulling the lens out of the curing solution, the curing solution will adhere evenly to the shape of the lens under the influence of gravity, and the excess curing solution will automatically drip into the soaking tank 310, reducing the loss of curing solution during the lens pulling process.

[0100] S600, Third Turnover: The dried lens semi-finished product 10 is transferred to the coating process via the connecting ear 12;

[0101] Optionally, the lens semi-finished product 10 can be transferred using a lens transfer fixture 200, as shown in Figure 4. The lens transfer fixture 200 includes a box body 210 and limiting members 220. The box body 210 has a storage slot 211 for accommodating the lens semi-finished product 10. The limiting members 220 are located on opposite sides of the storage slot 211, and each limiting member 220 has multiple slots, with the multiple slots on the two limiting members 220 corresponding to each other. The specific steps of the third transfer include:

[0102] S610, clamp the two connecting ears 12 and move the lens semi-finished product 10 to the top of the storage slot 211, so that the two connecting ears 12 are opposite to the two slots respectively. Then move the lens semi-finished product 10 downward so that the lens body 11 is placed in the storage slot 211 and the two connecting ears 12 are engaged with the corresponding slots.

[0103] S620. Repeat step S610 until the storage slot 211 is full of lens semi-finished products 10.

[0104] S630, the lens turnover fixture 200 containing the semi-finished lens 10 is transferred to the coating process.

[0105] Optionally, in one possible embodiment, an operator can hold the two connecting ears 12 with both hands. In another possible embodiment, a robotic arm can also be used to hold the two connecting ears 12. In other embodiments, the holding method of the connecting ears 12 can also be other, depending on actual needs, and this application does not impose specific limitations.

[0106] Furthermore, in step S610, the lens can be placed vertically in the storage slot 211. This arrangement allows the lens turnover fixture 200 to hold a larger number of lenses, which is beneficial to improving the turnover efficiency of the lenses.

[0107] Further, referring to Figure 4, multiple parallel and spaced ribs 212 are provided at the bottom of the storage slot 211. Adjacent ribs 212 form a limiting space, which corresponds to the card slot. Each limiting space contains a lens. By setting the ribs 212, the risk of lens shaking during turnover can be reduced, thereby improving the turnover yield of lenses.

[0108] By connecting the ear 12 to rotate the lens, it is not necessary to stick a protective film on the lens body 11 during the third rotation, thus eliminating the step of sticking a protective film. Therefore, the step of removing the protective film is also eliminated when proceeding to the next step. This simplifies the lens processing process, improves the lens processing efficiency, and also avoids the residue of adhesive on the protective film on the lens body 11, thereby improving the lens processing quality.

[0109] S700, Coating: The semi-finished lens 10 is transferred to the lens coating fixture 400 via the connecting ear 12. The lens coating fixture 400 can fix the semi-finished lens 10 via the connecting ear 12. After fixing the semi-finished lens 10, the lens body 11 is coated to form the finished lens.

[0110] Using a lens coating fixture 400 to fix the semi-finished lens 10 via connecting ears 12, compared with the prior art of fixing the semi-finished lens 10 via the non-processed area of ​​the lens body 11, it can achieve full coating of the lens body 11 and has higher versatility.

[0111] Further, as shown in Figure 6, the lens coating fixture 400 includes a coating fixture body 410, which has a lens placement area and connecting structures on opposite sides of the lens placement area. The connecting structures are used to fix the connecting ears 12 to the coating fixture body 410.

[0112] The specific steps for transferring the semi-finished lens 10 to the lens coating fixture 400 via the connecting ear 12 include:

[0113] Clamp the two connecting ears 12 and move the semi-finished lens 10 directly above the coating fixture body 410, so that the lens body 11 is opposite to the lens placement area, and the two connecting ears 12 are opposite to the two connecting structures respectively. Then move the semi-finished lens 10 downward so that the lens body 11 is placed in the lens placement area, and the connecting structure is connected to the corresponding connecting ear 12.

[0114] The coating fixture structure is designed to fix the lens by connecting the structure and the connecting ear 12, so that the coating fixture will not block the lens body 11, and can achieve full coating of the optical surface of the lens body 11, which has high versatility.

[0115] Optionally, in one possible embodiment, the connecting structure can be a connecting post disposed on the coating fixture body 410, with a corresponding connecting hole 13 on the connecting ear 12, and the connecting post is inserted into the corresponding connecting hole 13. In another possible embodiment, the connecting structure can also be a slot disposed on the coating fixture body 410, with the connecting ear 12 snapping into the corresponding slot. In other embodiments, the connecting structure can also be other, depending on actual needs, and this application does not impose specific limitations.

[0116] Furthermore, in this embodiment, the lens placement area is a placement hole that penetrates the coating fixture body 410, and the outer peripheral wall of the lens body 11 is attached to the inner peripheral wall of the placement hole. This arrangement ensures that neither side of the lens body 11 is obstructed, allowing the coating of both optical surfaces of the lens body 11 to be completed in a single coating process, simplifying the coating process and improving coating efficiency.

[0117] S800, Fourth Turnover: The finished lens is transferred to the second milling process via connecting ear 12;

[0118] Optionally, the lens semi-finished product 10 can be transferred using a lens turnover fixture 200, as shown in Figure 4. The lens turnover fixture 200 includes a box body 210 and limiting members 220. The box body 210 has a storage slot 211 for accommodating the lens semi-finished product 10. The limiting members 220 are located on opposite sides of the storage slot 211, and the limiting members 220 have multiple slots, with the multiple slots on the two limiting members 220 corresponding one-to-one. The specific steps of the fourth turnover include:

[0119] S810, clamp the two connecting ears 12 and move the lens semi-finished product 10 to the top of the storage slot 211, so that the two connecting ears 12 are opposite to the two slots respectively. Then move the lens semi-finished product 10 downward so that the lens body 11 is placed in the storage slot 211 and the two connecting ears 12 are engaged with the corresponding slots.

[0120] S820. Repeat step S810 until the storage slot 211 is full of lens semi-finished products 10.

[0121] S830, the lens turnover fixture 200 containing the semi-finished lens 10 is transferred to the hardening process.

[0122] Optionally, in one possible embodiment, an operator can hold the two connecting ears 12 with both hands. In another possible embodiment, a robotic arm can also be used to hold the two connecting ears 12. In other embodiments, the holding method of the connecting ears 12 can also be other, depending on actual needs, and this application does not impose specific limitations.

[0123] Furthermore, in step S810, the lens can be placed vertically in the storage slot 211. This arrangement allows the lens turnover fixture 200 to hold a larger number of lenses, which is beneficial to improving the turnover efficiency of the lenses.

[0124] Further, referring to Figure 4, multiple parallel and spaced ribs 212 are provided at the bottom of the storage slot 211. Adjacent ribs 212 enclose a limiting space, which corresponds to the card slot. Each limiting space contains a lens. By setting the ribs 212, the risk of lens shaking during turnover can be reduced, thereby improving the turnover yield of lenses.

[0125] By connecting the ear 12 to rotate the lens, it is not necessary to attach a protective film to the lens body 11 during the fourth rotation, thus eliminating the step of attaching the protective film. Therefore, the step of removing the protective film is also eliminated when proceeding to the next step. This simplifies the lens processing process, improves the lens processing efficiency, and also avoids the residue of adhesive on the protective film on the lens body 11, thereby improving the lens processing quality.

[0126] S900, Second milling: The finished lens is transferred to the lens cutting fixture 100 through the connecting ear 12. The lens cutting fixture 100 positions the finished lens through the connecting ear 12. After the finished lens is fixed, the two connecting ears 12 are cut off.

[0127] Specifically, as shown in Figures 2 and 3, the lens cutting fixture 100 includes a cutting fixture body 110, a lens receiving groove 111 and positioning posts placed on both sides of the lens receiving groove 111, a vacuum hole 113 in the lens receiving groove 111, and a connecting hole 13 on the connecting ear 12.

[0128] The specific steps for positioning the finished lens using the lens cutting fixture 100 via the connecting lug 12 include:

[0129] S910, clamp the two connecting ears 12 and move the lens semi-finished product 10 to directly above the cutting fixture body 110, so that the lens body 11 is opposite to the lens receiving groove 111, and the two connecting holes 13 are opposite to the two positioning pins respectively. Then move the lens semi-finished product 10 downward so that the lens body 11 is placed in the lens receiving groove 111 and the positioning pin is inserted into the corresponding connecting hole 13.

[0130] S920. Using a vacuum pump, the lens body 11 is adsorbed into the lens receiving groove 111 through the vacuum hole 113.

[0131] Optionally, in one possible embodiment, an operator can hold the two connecting ears 12 with both hands. In another possible embodiment, a robotic arm can also be used to hold the two connecting ears 12. In other embodiments, the holding method of the connecting ears 12 can also be other, depending on actual needs, and this application does not impose specific limitations.

[0132] The lens body 11 is fixed by vacuum adsorption, which, compared with the pressing method used in the prior art, avoids direct contact with the lens body 11, reducing the risk of wear on the lens body 11 due to contact and thus improving the production yield of the lens.

[0133] Furthermore, continuing to refer to Figure 3, the lens cutting fixture 100 also includes a slag-blocking component 120.

[0134] The specific steps of positioning the semi-finished lens 10 using the lens cutting fixture 100 via the connecting ear 12 also include:

[0135] S930, cover the lens body 11 with the slag-blocking member 120 on the optical surface of the lens body 11 away from the bottom of the lens receiving groove 111.

[0136] By providing the debris-blocking component 120, the optical surface of the lens body 11 can be shielded to prevent debris generated during cutting from splashing onto the optical surface of the lens body 11 and scratching the lens, thereby improving the cutting yield of the lens. Furthermore, the debris-blocking component 120 allows the lens cutting fixture 100 to be used for cutting lenses with optical surfaces on both sides. During cutting, there is no need to attach a protective film to the optical surface opposite to the bottom of the lens receiving groove 111, simplifying the cutting process and improving cutting efficiency.

[0137] Optionally, the slag-blocking component 120 can be rotatably connected to the cutting fixture body 110. The structure is simple and facilitates the slag-blocking component 120 to block the optical surface, as well as the removal of the slag-blocking component 120 for lens loading and unloading.

[0138] Furthermore, a sealing ring 114 can be provided in the lens receiving groove 111 so that the lens contacts the sealing ring 114. This can improve the reliability of the lens body 11 being fixed in the lens receiving groove 111 after vacuuming, and can also prevent the lens body 11 from directly contacting the bottom of the lens receiving groove 111, thus reducing the risk of the lens body 11 being scratched.

[0139] The lens processing method provided in this embodiment forms the lens body 11 and connecting ears 12 on both sides of the lens body 11 during injection molding of the lens semi-finished product 10. The lens is then rotated through the connecting ears 12. This eliminates the need to attach a protective film to the lens body 11 during the second, third, and fourth rotations, thus saving the step of attaching the protective film. Consequently, the step of removing the protective film is also eliminated when proceeding to the next step. This simplifies the lens processing steps, improves the lens processing efficiency, and prevents the adhesive on the protective film from remaining on the lens body 11, thereby improving the lens processing quality.

[0140] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A lens processing method, characterized in that, The process includes the following steps: Injection molding: a semi-finished lens (10) is formed by injection molding and then demolded; the semi-finished lens (10) includes a lens body (11) and connecting ears (12) on both sides of the lens body (11); First turnover: the semi-finished lens (10) is transferred to the first milling process; First milling: the semi-finished lens (10) is transferred to the lens cutting fixture (100) and fixed through the connecting ears (12). The lens cutting fixture (100) positions the semi-finished lens (10) through the connecting ears (12). After fixing the semi-finished lens (10), excess glue at the glue inlet on the lens body (11) is cut off; Second turnover: the cut semi-finished lens (10) is transferred to the hardening process through the connecting ears (12); Hardening: the semi-finished lens (10) is suspended on the lens hardening device (300) through the connecting ears (12), so that the semi-finished lens (10) is spun through the lens. The lens semi-finished product (10) is immersed in the hardening liquid by suspension, and then dried. Third turnover: The dried lens semi-finished product (10) is transferred to the coating process through the connecting ear (12). Coating: The lens semi-finished product (10) is transferred to the lens coating fixture (400) through the connecting ear (12). The lens coating fixture (400) can fix the lens semi-finished product (10) through the connecting ear (12). After fixing the lens semi-finished product (10), the lens body (11) is coated to form the finished lens. Fourth turnover: The finished lens is transferred to the second milling process through the connecting ear (12). Second milling: The finished lens is transferred to the lens cutting fixture (100) through the connecting ear (12). The lens cutting fixture (100) positions the finished lens through the connecting ear (12). After fixing the finished lens, the two connecting ears (12) are cut off.

2. The lens processing method according to claim 1, characterized in that, The specific demolding steps include: applying an ejector pin to the connecting ear (12) to eject the semi-finished lens (10) from the mold.

3. The lens processing method according to claim 1, characterized in that, The lens cutting fixture (100) includes a cutting fixture body (110), on which a lens receiving groove (111) is provided and positioning posts (112) are placed on both sides of the lens receiving groove (111). A vacuum hole (113) is provided in the lens receiving groove (111), and a connecting ear (12) is provided with a connecting hole (13). The specific steps of the lens cutting fixture (100) positioning the semi-finished lens (10) through the connecting ear (12) include: clamping the two connecting ears (12) to move the semi-finished lens (10). Move the lens body (111) directly above the cutting fixture body (110) so that the lens body (11) is opposite to the lens receiving groove (111) and the two connecting holes (13) are opposite to the two positioning posts (112) respectively. Then move the lens semi-finished product (10) downward so that the lens body (11) is placed in the lens receiving groove (111) and the positioning posts (112) are inserted into the corresponding connecting holes (13). Use a vacuuming device to adsorb the lens body (11) into the lens receiving groove (111) through the vacuuming hole (113).

4. The lens processing method according to claim 3, characterized in that, The lens cutting fixture (100) further includes a slag-blocking component (120). The specific steps of the lens cutting fixture (100) positioning the semi-finished lens (10) through the connecting ear (12) further include: covering the slag-blocking component (120) on the optical surface of the lens body (11) away from the bottom of the lens receiving groove (111).

5. The lens processing method according to claim 1, characterized in that, The lens semi-finished product (10) is transferred using a lens turnover fixture (200). The lens turnover fixture (200) includes a box body (210) and limiting members (220). The box body (210) is provided with a storage slot (211) for accommodating the lens semi-finished product (10). The limiting members (220) are arranged on opposite sides of the storage slot (211). The limiting members (220) are provided with multiple slots, and the multiple slots on the two limiting members (220) are arranged one-to-one. The specific steps of the second turnover include: clamping the two connecting ears. (12) Move the semi-finished lens (10) directly above the storage slot (211), so that the two connecting ears (12) are opposite to the two slots respectively. Then move the semi-finished lens (10) downward so that the lens body (11) is placed in the storage slot (211) and the two connecting ears (12) are engaged in the corresponding slots. Repeat the above steps until the storage slot (211) is full of the semi-finished lens (10). Transfer the lens turnover fixture (200) containing the semi-finished lens (10) to the hardening process.

6. The lens processing method according to claim 5, characterized in that, In the third turnover, the dried lens semi-finished product (10) is transferred to the coating process via the lens turnover fixture (200); and / or, in the fourth turnover, the finished lens is transferred to the second milling process via the lens turnover fixture (200).

7. The lens processing method according to claim 1, characterized in that, The lens hardening device (300) includes an immersion tank (310) and a bracket (320) that can be mounted on the immersion tank (310). The bracket (320) is provided with a hanger (330), the hanger (330) is provided with a hanging rod (331), and the connecting ear (12) is provided with a connecting hole (13). The specific steps of suspending the semi-finished lens (10) on the lens hardening device (300) through the connecting ear (12) include: clamping two of the connecting ears (12) and hanging one of the connecting ears (12) on the hanging rod (331) through the connecting hole (13); repeating the above steps until the hanging rod (331) is full of the semi-finished lens (10); and mounting the bracket (320) full of the semi-finished lens (10) on the immersion tank (310) so that the semi-finished lens (10) is immersed in the hardening liquid in the immersion tank (310).

8. The lens processing method according to claim 1, characterized in that, The lens coating fixture (400) includes a coating fixture body (410), which has a lens placement area and connecting structures on opposite sides of the lens placement area. The connecting structures are used to fix the connecting ears (12) on the coating fixture body (410). The specific steps of transferring the semi-finished lens (10) to the lens coating fixture (400) through the connecting ears (12) include: clamping the two connecting ears (12) to move the semi-finished lens (10) directly above the coating fixture body (410), so that the lens body (11) is opposite to the lens placement area, and the two connecting ears (12) are opposite to the two connecting structures respectively. Then, the semi-finished lens (10) is moved downward so that the lens body (11) is placed in the lens placement area, and the connecting structure is connected to the corresponding connecting ear (12).

9. The lens processing method according to claim 8, characterized in that, The lens placement area is a placement hole that passes through the coating fixture body (410), and the outer peripheral wall of the lens body (11) is attached to the inner peripheral wall of the placement hole.

10. The lens processing method according to claim 1, characterized in that, After the first milling process, the cut lens semi-finished product (10) is cleaned to remove cutting debris from the lens semi-finished product (10).

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