A finishing device for optical lenses

By combining a pneumatic telescopic arm and a limiting component for clamping, along with a vision sensing system, the problem of unstable clamping of aspherical lenses in trimming equipment has been solved, achieving high-precision, non-destructive optical lens processing.

CN120921215BActive Publication Date: 2025-12-05CHANGCHUN XINGHANG TECH CO LTD
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Patent Information

Application Number
CN202511454052.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-13
Publication Date
2025-12-05
Estimated Expiration
2045-10-13

AI Technical Summary

Technical Problem

Existing optical lens trimming equipment struggles to hold aspherical lenses stably and evenly, leading to lens displacement or deformation during processing, affecting accuracy and yield. Furthermore, once fixed, it cannot be adjusted to ensure center alignment, resulting in localized over- or under-trimming.

Method used

The optical lens is adsorbed and clamped by a combination of pneumatic telescopic arm and limiting component, combined with a vision sensing system and transmission module. By switching and adjusting the limiting component, the center of the lens is aligned with the center of the trimming unit, and a double-sided conical uniform clamping force field is formed.

Benefits of technology

It achieves stable and uniform clamping of curved lenses, avoids stress concentration, ensures high-precision and damage-free processing, and improves yield and processing accuracy.

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Abstract

The application belongs to the technical field of lens trimming processing, and particularly relates to a trimming device for optical lenses, which comprises a rack, a working area and a control area are arranged in the rack, a fixing unit for fixing the optical lenses, a trimming unit for trimming the optical lenses and a spraying unit for spraying coolant on the optical lenses during trimming are arranged in the working area; the trimming device solves the fundamental problem in trimming and fixing of curved optical lenses by means of the innovative self-adaptive clamping and centering mechanism, and realizes high-precision and non-damage processing; and the trimming process is improved in uniformity, reliability and automation by combining the integrated processing and cooling system, so that the ultra-high processing precision and yield of the optical lenses are ensured.
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Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lens trimming processing, and particularly relates to a trimming device for optical lenses. BACKGROUND

[0002] As a core component of modern optical systems, the machining precision of optical lenses directly affects the imaging quality and system performance; in the lens manufacturing process, especially for optical lenses with complex curved surfaces (such as single curved surfaces and double curved surfaces), edge trimming is a crucial finishing process, aiming to remove burrs, obtain accurate geometric profiles and meet assembly size requirements.

[0003] The existing optical lens trimming device usually uses mechanical clamping or vacuum adsorption to fix the lens, but for single and double curved surface lenses, the unique curved surface structure makes it difficult to achieve stable and uniform clamping by traditional planar adsorption or simple multi-point clamping. Uneven clamping force can easily cause small displacement or deformation of the lens during processing, even damage the lens by surface indentation and stress concentration, seriously affecting the processing precision and yield. In addition, after the lens is fixed, the center of the lens, the center of the trimming structure and the center of the fixing structure are difficult to keep completely coincident, and the lens cannot be adjusted after being fixed, which can cause excessive trimming in some areas and incomplete trimming in other areas during the trimming process.

[0004] Therefore, the present application provides a trimming device for optical lenses, especially for the trimming of curved optical lenses, which can achieve precise processing after stable, uniform and damage-free fixing of the optical lens to meet the processing requirements of high-precision lenses. SUMMARY

[0005] To solve the above problems, the present application provides a trimming device for optical lenses to solve the problems mentioned in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme: the present application provides a trimming device for optical lenses, comprising a rack, the inside of the rack is provided with a working area and a control area, the inside of the working area is provided with a fixing unit for fixing the optical lens, a trimming unit for trimming the optical lens and a spraying unit for spraying cooling liquid on the optical lens during trimming; wherein: the fixing unit comprises two oppositely arranged pneumatic telescopic arms, the end of the pneumatic telescopic arm is connected with a pressure disc; the inside of the pressure disc is uniformly provided with a plurality of limiting components by sliding, and the plurality of limiting components are divided into two groups.

[0007] The inside of the pressure disc is also provided with a transmission module for independently driving each group of limiting components to slide synchronously along the inside of the pressure disc.

[0008] The limiting assembly can freely switch between adsorbing and fixing the optical lens or limiting and guiding.

[0009] The inside of the rack is provided with a visual sensing system for identifying the position of the optical lens, and the drive limiting assembly moves to adjust the optical lens to align the center with the machining center of the trimming unit by controlling the transmission module.

[0010] The fixed unit adopts both adsorption and clamping to fix the optical lens. When adsorbed, the inner and outer double-layer movable staggered dispersion layout is adopted for adsorption and fixation, and the adsorption fixing point is adjusted according to the surface area of the optical lens. When clamped, the two sides of the pneumatic telescopic arm are extended to press and form a squeezing clamping force on each adsorption fixing point, forming a double-cone uniform clamping force on the outer wall of the curved optical lens.

[0011] According to an advantageous embodiment, the pressure disc part includes a fixed disc, and the disc surface of the fixed disc is uniformly provided with an even number of limiting grooves in the radial direction thereof; the even number of limiting grooves are divided into two groups, and each limiting assembly of the two groups is slidingly installed in the limiting groove; and the limiting assemblies of each group are respectively driven by independent transmission modules.

[0012] According to an advantageous embodiment, the limiting assembly includes a telescopic member and an execution member; the telescopic member includes a limiting block slidingly arranged inside the limiting groove, a drive motor is arranged inside the limiting block through a motor base, a threaded rod is installed on the output shaft of the drive motor through a shaft coupling, and a U-shaped seat is also slidingly arranged inside the limiting block; the threaded rod is threadedly connected with the U-shaped seat; and the execution member is arranged on the U-shaped seat.

[0013] According to an advantageous embodiment, the execution member includes a support plate arranged in the U-shaped seat, a micro motor is also arranged in the U-shaped seat, the output shaft of the micro motor is connected with the middle part of the support plate; an adsorption head and a guide bead are respectively arranged at both ends of the support plate, and the micro motor is used to drive the support plate to flip by one hundred and eighty degrees to switch the working position of the adsorption head or the guide bead.

[0014] According to an advantageous embodiment, the transmission module includes a toothed disc transmission module, the toothed disc transmission module includes tooth blocks fixedly connected to the rear side of all limiting blocks of one group of limiting assemblies, and a plane toothed disc rotatingly connected to the fixed disc; a first motor is arranged inside the fixed disc through a motor base, and the output shaft of the first motor is fixedly connected with the plane toothed disc.

[0015] According to an advantageous embodiment, the transmission module further includes a pulley transmission module, which includes a threaded seat fixedly connected to the rear side of all the limit blocks on a set of limit components. An adjusting rod is threadedly connected inside the threaded seat. One end of the adjusting rod is rotatably disposed in a fixed disk, and the other end is provided with a first bevel gear. A number of rotating shafts corresponding one-to-one with the threaded seats are also rotatably disposed in the fixed disk. A second bevel gear connected to the first bevel gear is provided at the upper end of the rotating shaft. Several rotating shafts are connected to each other through pulleys and belts. A second motor is also disposed in the fixed disk. The output shaft of the second motor is connected to one of the rotating shafts through pulleys and belts.

[0016] According to an advantageous embodiment, the interior of the U-shaped seat is further provided with a guide groove at an angle of 180 degrees, and the interior of the support plate is provided with limiting posts at both ends located inside the guide groove.

[0017] According to an advantageous embodiment, the limiting components on the two opposing pressure plates work together to form a uniform clamping force field in the shape of a double cone on the curved optical lens.

[0018] Compared with the prior art, the optical lens trimming device provided by the present invention has the following beneficial effects: 1. The present invention utilizes multiple sets of limiting components that can move independently radially on the pressure plates on both sides, and employs the intelligent switching function of the adsorption head (negative pressure adsorption) and guide beads (rolling contact); after initial single-sided fixation, only one adsorption head works to maintain the main fixing point, while the guide beads at other points roll in contact with the curved surface of the lens, providing guiding support for subsequent adjustments; the entire adjustment process combines a visual sensor and an image processing algorithm to identify the position of the lens feature points in real time, and drives the limiting components to make micro-movements of the lens through separately controlled pulley / tooth disk transmission modules, ensuring that the center of the lens, the processing center of the trimming unit, and the center of the fixed structure are precisely aligned.

[0019] 2. After the optical lens position is adjusted, all limiting components switch to adsorption mode, and the pneumatic telescopic arms on both sides apply opposing pressure simultaneously, forming a uniformly distributed "double-sided cone" clamping force field surrounding the sidewall of the lens. This force field can perfectly conform to the curved surface contour, effectively avoiding stress concentration and excessive local pressure, achieving high-precision, damage-free processing; and ensuring the processing accuracy and yield of the optical lens. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention from the main view position.

[0021] Figure 2 This is a three-dimensional structural diagram of the invention from the rear view position.

[0022] Figure 3 This is a plan view of the pressure plate component of the present invention.

[0023] Figure 4 This is a planar cross-sectional view of the limiting component of the present invention clamping a single-curved optical lens.

[0024] Figure 5 For the present invention Figure 4 A magnified view of section A in the image.

[0025] Figure 6 For the present invention Figure 4 A magnified view of section B in the image.

[0026] Figure 7 This is a planar cross-sectional view of the limiting component of the present invention clamping the hyperboloid optical lens.

[0027] The attached diagram shows the following components: 1. Frame; 2. Fixing unit; 3. Trimming unit; 4. Spraying unit; 11. Working area; 12. Control area; 21. Pneumatic telescopic arm; 22. Pressure plate; 23. Limiting assembly; 221. Fixing plate; 222. Limiting groove; 231. Limiting block; 232. Drive motor; 233. Threaded rod; 234. U-shaped seat; 235. Micro motor; 236. Support plate; 237. Adsorption head; 238. Guide bead; 239. Guide groove; 230. Limiting post; 51. Tooth block; 52. Flat toothed disc; 53. Motor No. 1; 61. Threaded seat; 62. Adjusting rod; 63. Bevel gear No. 1; 64. Rotating shaft; 65. Bevel gear No. 2; 66. Motor No. 2. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail.

[0029] Please refer to the following: Figure 1 and Figure 2 An optical lens trimming device includes a frame 1, a fixing unit 2, a trimming unit 3, and a spraying unit 4. The frame 1 is provided with a working area 11 and a control area 12. The working area 11 is provided with a fixing unit 2 for clamping the optical lens to be processed. The working area 11 is also provided with a trimming unit 3 for trimming the fixed optical lens and a spraying unit 4 for cooling the processed optical lens.

[0030] When performing edge trimming on optical lenses, the operation control area 12 is first used to adjust the processing parameters according to the type of optical lens. After the parameter adjustment is completed, the optical lens to be processed is placed inside the work area 11. The optical lens is then fixed by the fixing unit 2 with one-sided adsorption. At the same time, adaptive adjustment is made to ensure that the fixed position is consistent with the center of the optical lens and the processing center of the edge trimming unit 3. Then, the optical lens after the position adjustment is completed is further clamped and fixed by the fixing unit 2. Next, the fixed optical lens is trimmed by the edge trimming unit 3. During the edge trimming process, the spray unit 4 sprays coolant to cool the trimming position. At the same time, the sprayed coolant also removes the burrs from the edge trimming process, ensuring the edge trimming effect.

[0031] The working principle of the trimming unit 3 in this embodiment is to use a robotic arm connected to a soft rotary wheel (such as a polyurethane wheel or a felt wheel). The rotary wheel rotates at high speed and gently contacts the edge of the optical lens, smoothing the rough surface of the optical lens and polishing it with a glossy finish through mechanical friction.

[0032] The spraying unit 4 in this embodiment includes a liquid storage unit, a conveying system, a nozzle, and a filtration and circulation system. The working principle is that the polishing liquid inside the liquid storage unit is sprayed onto the rotary wheel through the nozzle by the conveying system. The polishing liquid sprayed onto the rotary wheel can reduce the temperature of the rotary wheel surface and at the same time remove the extremely fine glass fragments removed during the trimming process.

[0033] See Figure 2 and Figure 3 The fixing unit 2 includes two pneumatic telescopic arms 21 arranged opposite each other on the left and right side walls of the working area 11. It should be noted that both pneumatic telescopic arms 21 are connected to the drive system inside the frame 1. The drive system can drive the optical lens fixed by the fixing unit 2 to rotate at a uniform speed. The ends of the two pneumatic telescopic arms 21 that are close to each other are respectively connected to pressure plate components 22 through flanges. Several limiting components 23 are evenly arranged inside the pressure plate components 22 by sliding. The several limiting components 23 are divided into two groups, and each group of limiting components 23 is driven independently. The limiting components 23 can freely switch to adsorb and fix the optical lens or limit and guide it. The limiting components 23 on the two pressure plate components 22 cooperate to form a double-sided conical uniform clamping force field for the hyperboloid optical lens.

[0034] After the optical lens is fixed by adsorption on one side, the position of the optical lens is adjusted by the two sets of limiting components 23 on the single-sided pressure plate 22. It should be noted that the optical lens can be automatically adjusted because the frame 1 is equipped with a visual sensing system. The system captures images through a camera, identifies the position of feature points using image processing algorithms, and then automatically completes the position adjustment of the optical lens based on the position data.

[0035] During the process of adjusting the position of the optical lens, when one of the limiting components 23 on one side is adsorbed and fixed to the optical lens, the other limiting components 23 switch to roll and guide the optical lens, thereby ensuring a smooth adjustment process of the optical lens position.

[0036] After the optical lens position is adjusted, all guide limiting components 23 switch to adsorbing and fixing the optical lens. Simultaneously, the limiting components 23 on both sides work together to clamp and fix the optical lens with a uniform double-sided clamping force, thereby ensuring the polishing and trimming effect of the optical lens. It should be noted that... (See also...) Figure 3 When the optical lens is clamped by the limiting components 23 on both sides, the limiting components 23 are distributed in two layers along the radius of the pressure plate 22, so they are divided into two layers of clamping points. At the same time, each layer has three clamping points. The clamping points on the two layers are staggered and dispersed, which greatly improves the clamping effect.

[0037] See Figure 3 The pressure plate component 22 includes a fixed plate 221. The surface of the fixed plate 221 is evenly provided with a plurality of even-numbered limiting grooves 222 along its radial direction. The plurality of even-numbered limiting grooves 222 are divided into two groups, and each limiting component 23 of the two groups is slidably installed in the limiting groove 222. The pressure plate component 22 is also provided with a transmission module for driving each group of limiting components 23 to slide individually along the limiting groove 222. In this embodiment, the transmission module adopts a pulley transmission module and a gear plate transmission module.

[0038] It should be noted that the purpose of using a pulley drive module and a gear drive module to drive the two sets of limit components 23 is to avoid spatial position interference when using the same set of drive modules. In fact, if there is no spatial interference, as long as it can be ensured that each limit component 23 in the same set can move radially synchronously along the limit groove 222, any drive module can be used.

[0039] See Figure 4 , Figure 5 and Figure 6The limiting component 23 includes a telescopic component consisting of a limiting block 231, a drive motor 232, a threaded rod 233, and a U-shaped seat 234, and an actuating component consisting of a micro motor 235, a support plate 236, an adsorption head 237, and a guide bead 238. The limiting block 231 is slidably disposed inside the limiting groove 222. The drive motor 232 is mounted inside the limiting block 231 via a motor mount. The output shaft of the drive motor 232 is mounted with a threaded rod 233 via a coupling. The U-shaped seat 234 is also slidably disposed inside the limiting block 231. The threaded rod 233 and the U-shaped seat 234 are threadedly connected. The drive motor 232 drives the threaded rod 233 to rotate. Since the U-shaped seat 234 slides within the limiting block 231, the rotation of the threaded rod 233 synchronously controls the sliding of the U-shaped seat 234 within the limiting block 231. Thus, during the switching between adsorption fixation and limiting guidance functions on the outer wall of the optical lens, the position of the actuating component is changed to achieve the clearance function.

[0040] See Figure 6 The support plate 236 is set inside the U-shaped seat 234, and a micro motor 235 is also set inside the U-shaped seat 234. The output shaft of the micro motor 235 is connected to the middle of the support plate 236. The micro motor 235 drives the support plate 236 to rotate 180 degrees. Adsorption heads 237 and guide beads 238 are respectively set at both ends of the support plate 236. It should be noted that an air pump system is set inside the frame 1, and the adsorption head 237 is connected to the air pipe of the air pump system inside the frame 1.

[0041] Specifically, during the switching between the adsorption / fixing and the limiting / guiding functions, the limiting component 23 is driven by the micro motor 235 to rotate the support plate 236 180 degrees, thereby switching the contact between the adsorption head 237 or the guide bead 238 and the surface of the optical lens. Simultaneously, to further ensure the smoothness of the rotation process of the support plate 236, please refer to... Figure 5 The U-shaped seat 234 is also provided with a guide groove 239 with an angle of 180 degrees. The support plate 236 is provided with limiting posts 230 with both ends located inside the guide groove 239. During the rotation of the support plate 236, the limiting posts 230 cooperate with the guide groove 239 to effectively prevent the support plate 236 from becoming unstable during the rotation process. At the same time, it ensures that when switching between the adsorption head 237 and the guide bead 238, either one can be accurately aligned with the outer wall of the optical lens.

[0042] When fixing the outer wall of the optical lens, the telescopic component makes the adsorption head 237 come into contact with the outer wall of the optical lens, and then the air pump system works to draw air, so that the adsorption head 237 generates negative pressure, thereby adsorbing and fixing the outer wall of the optical lens.

[0043] It should be noted that, for reference Figure 5The gear transmission module described in this embodiment includes a set of limit components 23 on which all limit blocks 231 are fixedly connected to the rear side of a gear block 51, and a flat gear disk 52 rotatably connected to a fixed disk 221. A motor 53 is installed inside the fixed disk 221 through a motor base, and the output shaft of the motor 53 is fixedly connected to the flat gear disk 52.

[0044] The specific working process of the gear drive module is as follows: because the spiral teeth on the flat gear disk 52 mesh with the teeth of all the gear blocks 51, when the No. 1 motor 53 starts, it drives the flat gear disk 52 to rotate. At the same time, under the restriction of the limiting groove 222, all the limiting blocks 231 in this group slide synchronously along the limiting groove 222.

[0045] Continue reading Figure 5 The pulley drive module includes a threaded seat 61 fixedly connected to the rear side of all the limit blocks 231 on another set of limit components 23. An adjusting rod 62 is threadedly connected inside the threaded seat 61. One end of the adjusting rod 62 is rotatably set in the fixed plate 221, and the other end is provided with a first bevel gear 63. The fixed plate 221 also has a number of rotating shafts 64 corresponding one-to-one with the threaded seats 61. The upper end of the rotating shaft 64 is provided with a second bevel gear 65 connected to the first bevel gear 63. The rotating shafts 64 are connected to each other through pulleys and belts. The fixed plate 221 also has a second motor 66. The output shaft of the second motor 66 is connected to one of the rotating shafts 64 through pulleys and belts.

[0046] The specific working process of the pulley drive module is as follows: the second motor 66 starts, and the shaft 64 connected to it rotates through the pulley and belt. During the rotation of the shaft 64, the second bevel gear 65 on it drives the first bevel gear 63 meshing with it to rotate synchronously. The rotation of the first bevel gear 63 drives the adjusting rod 62 connected to it to rotate. The rotation of the adjusting rod 62 engages with the threaded seat 61, thereby indirectly causing the limiting block 231 to slide along the limiting groove 222. Since it is connected to all the shafts 64 through the pulley and belt drive, it can drive all the limiting blocks 231 on this group to slide synchronously along the limiting groove 222.

[0047] Before adjusting the position of the optical lens, one of the limiting components 23 on one side uses negative pressure to fix the optical lens through the suction head 237, and the remaining limiting components 23 make rolling contact with the surface of the optical lens through the guide bead 238. During the position adjustment process, the pulley drive module and the gear drive module work together to drive the limiting block 231 to move along the limiting groove 222, indirectly driving the optical lens to adjust its position. If the suction head 237 fixes a curved optical lens, the telescopic component remains working throughout the process, and adjusting the position of the U-shaped seat 234 causes the guide bead 238 to always be in contact with the outer wall of the curved optical lens.

[0048] In practice, the first step is parameter input: in operation control area 12, adjust the processing parameters according to the type of optical lens.

[0049] The second step is optical lens fixing: the optical lens to be processed is placed inside the working area 11, and the optical lens is fixed by adsorption on one side through the fixing unit 2; then the internal vision sensor monitors the data and automatically adjusts the center of the optical lens, the fixed position and the processing center of the trimming unit 3 to be consistent.

[0050] After completion, the other side pneumatic telescopic arm 21 extends and the various limiting components 23 on that side also adsorb and fix the optical lens on that side, and together with the pneumatic telescopic arms 21 on both sides, completes the double-sided squeezing clamping (it should be noted that a pressure sensor is installed inside, and the squeezing clamping force on the optical lens can be automatically adjusted according to the data of the pressure sensor).

[0051] The third step is edge trimming: the edge trimming unit 3 trims the fixed optical lens, while the spraying unit 4 sprays coolant to cool the trimmed area, and the coolant also removes the burrs from the trimming process.

[0052] The fourth step is to remove the processed optical lens.

[0053] This invention can separately process single-curved optical lenses (see...) Figure 4 Hyperbolic optical lenses (see) Figure 7 After fixing and clamping planar optical lenses, edge trimming is performed. The fixing of the optical lenses employs a combination of adsorption and clamping methods to achieve stable and uniform clamping. When adsorbing and fixing the optical lenses, a staggered, dispersed layout with inner and outer double layers that can move radially is used. The adsorption and fixing points are adjusted according to the surface area of ​​the optical lenses. The adsorption head 237 can be adjusted in extension position via a telescopic component, thus accommodating curved optical lenses. One side of the optical lens is adsorbed and fixed during placement; after subsequent position adjustments, the pneumatic telescopic arm 21 on the other side extends, driving the connected pressure plate. The component 22 is close to the optical lens, and the positions of each limiting component 23 on it are adjusted by the pulley transmission module and the gear transmission module. After the position is adjusted, the pneumatic telescopic arm 21 extends and cooperates with the adsorption head 237 to adsorb and fix the same side. After the adsorption and fixation on both sides are completed, the pneumatic telescopic arms 21 on both sides extend and press to make each adsorption and fixation point form a mutual squeezing clamping force. Through the above adaptive position adjustment and multi-point adsorption and fixation and squeezing clamping, the outer wall of the curved optical lens is formed under double-sided uniform force and double-sided conical uniform clamping force to annularly grind and trim the edge of the lens side wall, ensuring the processing accuracy of the optical lens.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 this invention and simplifying the description, and are not intended to 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 this invention.

[0055] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An edging apparatus for optical lenses, comprising a frame inside which a work area and a control area are provided, characterized in that, The inner part of the work area is provided with a fixing unit for fixing the optical lens, an edge trimming unit for trimming the optical lens, and a spraying unit for spraying cooling liquid on the optical lens during trimming; The fixing unit comprises two oppositely arranged pneumatic telescopic arms, the end of the pneumatic telescopic arm is connected with a pressure disc, the inner part of the pressure disc is uniformly provided with a plurality of limiting assemblies by sliding, and the plurality of limiting assemblies are divided into two groups; The inner part of the pressure disc is further provided with a transmission module for independently driving each group of limiting assemblies to slide synchronously along the inner part of the pressure disc; The limiting assembly can freely switch between adsorbing and fixing the optical lens or limiting and guiding; The inner part of the rack is provided with a visual sensing system for identifying the position of the optical lens, and the transmission module is driven to move the limiting assembly to adjust the optical lens so that the center thereof is aligned with the machining center of the edge trimming unit; The fixing unit adopts both adsorption and clamping to fix the optical lens, when adsorbed and fixed, the inner and outer double-layer movable staggered dispersed layout method is adopted, the adsorption fixing point is adjusted and adapted according to the surface area of the optical lens; when clamped and fixed, the pneumatic telescopic arms on both sides are elongated to press and form a squeezing clamping force on each adsorption fixing point, and a double-cone uniform clamping force is formed on the outer wall of the curved surface optical lens; The limiting assembly comprises a telescopic member and an execution member; the telescopic member comprises a limiting block slidingly arranged in a limiting slot, a driving motor is arranged in the limiting block through a motor base, a threaded rod is mounted on the output shaft of the driving motor through a shaft coupling, and a U-shaped seat is slidingly arranged in the limiting block; the threaded rod is threadedly connected with the U-shaped seat; and the execution member is arranged on the U-shaped seat; The execution member comprises a support plate arranged in the U-shaped seat, a micro motor is arranged in the U-shaped seat, and the output shaft of the micro motor is connected with the middle part of the support plate; the two ends of the support plate are respectively provided with an adsorption head and a guide bead, and the micro motor is used to drive the support plate to flip by one hundred and eighty degrees to switch the working position of the adsorption head or the guide bead; The transmission module comprises a gear disc transmission module, the gear disc transmission module comprises gear blocks fixedly connected to the rear sides of all limiting blocks in one group of limiting assemblies, and a plane gear disc rotatably connected to a fixed disc; a first motor is arranged in the fixed disc through a motor base, and the output shaft of the first motor is fixedly connected with the plane gear disc; The transmission module further comprises a belt wheel transmission module, the belt wheel transmission module comprises screw seats fixedly connected to the rear sides of all limiting blocks in one group of limiting assemblies, an adjusting rod is threadedly connected in the screw seat, one end of the adjusting rod is rotatably arranged in a fixed disc, and the other end is provided with a first bevel gear; a plurality of shafts corresponding to the screw seats are rotatably arranged in the fixed disc, the upper end of each shaft is provided with a second bevel gear connected with the first bevel gear, the shafts are connected through a belt wheel and a belt, a second motor is arranged in the fixed disc, and the output shaft of the second motor is connected with one of the shafts through the belt wheel and the belt.

2. An edging apparatus for optical lenses according to claim 1, characterized in that: The fixed disc is provided with a plurality of even limiting grooves on the disc surface along the radial direction; the plurality of even limiting grooves are divided into two groups, and each limiting assembly of the two groups is slidingly installed in the limiting groove; and the limiting assemblies of each group are respectively driven by independent transmission modules.

3. An edging apparatus for optical lenses according to claim 1, characterized in that: The U-shaped seat is further provided with a guide groove with an angle of 180 degrees inside, and the inner part of the support plate is provided with a limiting column with two ends located inside the guide groove.

4. The edging apparatus for optical lenses according to claim 1, characterized in that: The limiting assemblies on the two oppositely arranged pressing disc parts jointly act on the curved optical lens to form a uniform clamping force field with double-face taper.

Citation Information

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