Positioning clamp for assembling optical lens

Abstract

The utility model relates to optical lens technical field especially discloses a kind of positioning fixture for optical lens assembly, lifting frame is slidably connected in clamping positioning box inside, lifting frame is fixedly connected with outer thread stem inside, gear is provided with internal thread groove inside, outer thread stem is threadedly connected inside internal thread groove, when two racks are simultaneously inward sliding to carry out clamping operation under the rotation of gear, the rotation of gear drives outer thread stem to slide downwards, and then outer thread stem will drive lifting frame to slide down in clamping positioning box inside, optical lens placed on lifting frame is lowered along with, and clamping positioning is completed in the process of lowering, after assembly processing is completed, when loosening clamping operation, action is opposite to above, cylinder reverses action, sliding frame is reversely slid, rack drives gear to rotate reversely, outer thread stem slides upwards, drives lifting frame to rise, to extend lens upward jacking, improve the convenience of taking operation.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, and in particular to a positioning fixture for assembling optical lenses. Background Technology

[0002] In the field of optical lens manufacturing, the performance of optical lenses directly determines the imaging quality and application effects of optical equipment. Crimping devices for optical lens assembly play an indispensable role in ensuring the precise assembly of lenses and lens elements. With the rapid development of modern technology, various optical devices, such as high-end photographic equipment, precision microscopes, and advanced optical sensors, place increasingly stringent performance requirements on optical lenses. To meet these demands, optical lenses must possess extremely high precision, stability, and superior optical performance, making crimping assembly operations particularly necessary. Precise crimping ensures the accurate positioning of lens elements within the lens, guaranteeing that the light propagation path between lens elements meets design requirements. This minimizes optical problems such as aberrations and chromatic aberration, improving image clarity and color reproduction. Simultaneously, good crimping ensures a tight bond between lens elements and the lens, enhancing the overall structural stability of the lens and allowing it to maintain stable optical performance under various environmental conditions, such as temperature changes and vibrations. Currently, crimping devices for optical lens assembly typically need to possess the following technical characteristics: 1. Precise clamping and positioning technology to ensure accurate lens positioning and prevent displacement during the crimping process; 2. Stable crimping technology can precisely control the crimping force according to the characteristics of different lenses and lenses, ensuring that the lens and lens are tightly bonded without damage; 3. Excellent versatility, capable of adapting to the assembly and pressing requirements of optical lenses of different specifications and sizes.

[0003] Currently, various devices and methods are used to realize the function of crimping devices for optical lens assembly. Some devices use simple manual clamps to hold the lens, fixing it in a general position manually before using external crimping tools for crimping. Other devices use electric or pneumatic clamps, controlling the opening and closing of the clamps via buttons or air valves to hold the lens. These clamps are usually fixed in a specific position on the worktable, and the crimping operation is performed directly after the lens is placed.

[0004] However, the above method has a prominent problem: existing devices generally lack the function of simultaneous lifting and lowering during clamping operations. When pressing the lens, if the lens clamping position is far from the pressing position, the upper part of the lens is prone to shaking during the pressing process due to the lack of effective support. This seriously affects the pressing accuracy, causing deviations in the bonding between the lens and the lens, and thus reducing the imaging quality of the optical lens. Conversely, if the clamping position is set close to the pressing position, although lens shaking can be reduced during pressing, the space available for handling after pressing will be greatly reduced, making it difficult for workers to smoothly handle the assembled lens, greatly affecting the convenience of handling operations and reducing overall production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for assembling optical lenses. It solves the problem that existing devices generally lack simultaneous lifting and lowering functionality during clamping operations. Furthermore, when pressing lenses, if the clamping position is far from the pressing position, the upper part of the lens lacks effective support, making it prone to wobbling during pressing. This severely affects the pressing accuracy, leading to deviations in the lens-lens connection and consequently reducing the image quality of the optical lens. Conversely, while setting the clamping position close to the pressing position reduces lens wobbling during pressing, it significantly reduces the space available for handling after pressing, making it difficult for workers to easily retrieve the assembled lens. This greatly impacts the convenience of handling operations and reduces overall production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A positioning fixture for assembling an optical lens includes a clamping and positioning box. Inside the clamping and positioning box is a counter-sliding mechanism for driving the clamping action. The counter-sliding mechanism includes a gear and two racks. The gear is rotatably connected inside the clamping and positioning box, and the two racks are slidably connected inside the clamping and positioning box. The two racks are located on either side of the gear and mesh with it. Inside the clamping and positioning box is a sliding mechanism for lifting the lens. The sliding mechanism includes a lifting frame and an externally threaded rod. The lifting frame is slidably connected inside the clamping and positioning box, and the externally threaded rod is fixedly connected inside the lifting frame. The gear has an internally threaded groove, and the externally threaded rod is threaded into the internally threaded groove.

[0007] Preferably, the clamping and positioning box has two slide rails fixedly connected inside, and two sliding frames are slidably connected to the outer surfaces of the two slide rails.

[0008] Preferably, the two racks are located inside the two sliding frames respectively, and the two racks and the two sliding frames are threadedly connected with fixing bolts.

[0009] Preferably, both sliding frames are fixedly connected to a circular clamping block at their upper ends, and both circular clamping blocks are fitted with rubber sleeves on their outer surfaces.

[0010] Preferably, a cylinder is fixedly connected to the inner surface of the clamping and positioning box, and the cylinder is fixedly connected to the outer surface of the two sliding frames.

[0011] Preferably, the clamping and positioning box has a bearing sleeved inside, and the gear is sleeved on the inner surface of the bearing.

[0012] Preferably, a pressing worktable is fixedly connected to the lower end of the clamping and positioning box, and a pressing machine is fixedly connected to the upper end of the pressing worktable.

[0013] Preferably, the crimping machine is located on the outer surface of the clamping and positioning box, and a touch screen is provided on the outer surface of the crimping machine.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the gear rotates and drives the two racks to slide inward simultaneously for clamping, the rotation of the gear drives the external threaded rod to slide downward. In turn, the external threaded rod drives the lifting frame to slide and descend inside the clamping and positioning box. The optical lens placed on the lifting frame descends accordingly and completes clamping and positioning during the descent. After assembly and processing, when the clamping operation is released, the action is the opposite of the above. The cylinder moves in the opposite direction, pushing the sliding frame to slide in the opposite direction, driving the rack to rotate the gear in the opposite direction, and the external threaded rod to slide upward, driving the lifting frame to rise, thereby lifting the lens upward and extending it, improving the convenience of handling.

[0015] Second, the opposing sliding of the two racks drives the two sliding brackets to move in opposite directions. The circular clamping blocks fixedly connected to the upper ends of the two sliding brackets slide in opposite directions and gradually approach the optical lens. The rubber sleeves on the surface fit against the lens surface to achieve clamping and positioning of the optical lens. The two circular clamping blocks are placed in an alternating manner to accommodate optical lenses of different sizes. At the same time, the rubber sleeves can prevent the lens from being pinched and damaged. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the clamping and positioning box connection of this utility model; Figure 3 This is an exploded view of the lifting frame connection of this utility model; Figure 4 This is an exploded view of the rack and pinion connection of this utility model; Figure 5 This is a diagram of the cylinder connection structure of this utility model.

[0018] Legend: 11. Clamping and positioning box; 12. Gear; 13. Rack; 14. Lifting frame; 15. External threaded rod; 16. Internal threaded groove; 17. Slide rail; 18. Sliding frame; 19. Fixing bolt; 21. Circular ring clamp; 22. Rubber sleeve; 23. Cylinder; 24. Bearing; 25. Crimping worktable; 26. Crimping machine; 27. Touch screen. Detailed Implementation

[0019] This application provides a positioning fixture for assembling optical lenses, effectively solving the problem that existing devices generally lack simultaneous lifting and lowering functionality during clamping operations. When pressing lenses, if the clamping position is far from the pressing position, the upper part of the lens lacks effective support, making it prone to wobbling during the pressing process. This severely affects the pressing accuracy, leading to deviations in the lens-lens connection and consequently reducing the image quality of the optical lens. Conversely, while setting the clamping position close to the pressing position reduces lens wobbling during pressing, it significantly reduces the space available for handling after pressing, making it difficult for workers to handle the lens smoothly. The assembled lens significantly impacts the ease of handling and reduces overall production efficiency. When the gear rotates, causing two racks to slide inwards simultaneously for clamping, the gear's rotation drives the external threaded rod downwards. This, in turn, causes the lifting frame to slide and descend within the clamping and positioning box. The optical lens placed on the lifting frame descends accordingly, completing clamping and positioning during the descent. After assembly and processing, when releasing the clamp, the action is reversed: the cylinder reverses its movement, pushing the sliding frame to slide in the opposite direction, causing the racks to rotate in the opposite direction, and the external threaded rod to slide upwards, lifting the lifting frame and extending the lens upwards, thus improving the ease of handling.

[0020] Example like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the technical solution in this application effectively solves the problem that existing devices generally lack simultaneous lifting and lowering functionality during clamping operations. When pressing a lens, if the lens clamping position is far from the pressing position, the upper part of the lens lacks effective support, making it prone to wobbling during the pressing process. This severely affects the pressing accuracy, leading to deviations in the lens-lens connection and consequently reducing the image quality of the optical lens. Conversely, if the clamping position is set close to the pressing position, although lens wobbling can be reduced during pressing, the space available for handling after pressing is significantly reduced, making it difficult for workers to easily handle the assembled lens. This greatly affects the convenience of handling operations and reduces the overall image quality. The overall technical issue of production efficiency can be addressed with the following general approach: A positioning fixture for assembling optical lenses includes a clamping and positioning box 11. Inside the clamping and positioning box 11 is a counter-sliding mechanism for driving the clamping action. The counter-sliding mechanism includes a gear 12 and two racks 13. The gear 12 is rotatably connected inside the clamping and positioning box 11, and the two racks 13 are slidably connected inside the clamping and positioning box 11, located on either side of the gear 12 and meshing with it. Inside the clamping and positioning box 11 is a sliding mechanism for lifting the lens. The sliding mechanism includes a lifting frame 14 and an externally threaded rod 15. The lifting frame 14 is slidably connected inside the clamping and positioning box 11, and the externally threaded rod is fixedly connected inside the lifting frame 14. 15. Gear 12 has an internal threaded groove 16, and an external threaded rod 15 is threaded into the internal threaded groove 16. The sliding of one rack 13 engages and drives gear 12 to rotate. When gear 12 rotates, it engages and slides synchronously with another rack 13. Due to the meshing transmission characteristics of gear 12 and rack 13, the two racks 13 will slide in opposite directions, either moving closer or further apart. When gear 12 rotates and drives the two racks 13 to slide inwards simultaneously for clamping, gear 12 will drive the external threaded rod 15, which is threaded into it, to slide downwards through the internal threaded groove 16. The external threaded rod 15 will then drive the lifting frame 14 to slide downwards. The lowering frame 14 houses the optical lens. When the gear 12 rotates to perform the clamping operation, it lowers the lens. After assembly and processing, when the clamping operation is released, the opposite operation occurs: when the clamping operation is released, the lens will be lifted upwards and extended. The combined clamping and lifting operation improves the convenience of handling. When the clamping is stable and the pressing operation is performed, the lens sinks into the clamping positioning box 11. The inner wall of the circular groove at the upper end of the clamping positioning box 11 also limits the lens, improving the stability of the lens pressing operation. By opening a threaded groove on the inner wall of the circular groove of the clamping positioning box 11, and screwing rings of different opening sizes into the threaded groove, lenses of different outer diameters can be adapted and adjusted.

[0021] The clamping and positioning box 11 has two slide rails 17 fixedly connected inside, and two sliding frames 18 slidably connected to the outer surfaces of the two slide rails 17. Two racks 13 are located inside the two sliding frames 18 respectively. The two racks 13 and the two sliding frames 18 are all threadedly connected to fixing bolts 19. Circular clamping blocks 21 are fixedly connected to the upper ends of the two sliding frames 18, and rubber sleeves 22 are fitted onto the outer surfaces of the two circular clamping blocks 21. A cylinder 23 is fixedly connected to the inner surface of the clamping and positioning box 11, and the cylinder 23 is fixedly connected to the outer surfaces of the two sliding frames 18. The cylinder 23 serves as the clamping and operating mechanism. The driving source is activated by starting cylinder 23. The output shaft of cylinder 23 pulls a sliding frame 18 to slide. The sliding frame 18 drives the rack 13 installed inside to mesh with the gear 12, thereby driving the two sliding frames 18 to slide in opposite directions to perform a clamping operation. The circular clamping blocks 21 installed on the upper end of the two sliding frames 18 are placed in an alternating manner to adapt to optical lenses of different sizes. The two circular clamping blocks 21 slide against the surface of the optical lens to clamp and position it. The circular clamping blocks 21 contact the lens surface through the rubber sleeve 22 on the surface, thereby avoiding damage to the lens.

[0022] A bearing 24 is sleeved inside the clamping and positioning box 11, and a gear 12 is sleeved on the inner surface of the bearing 24. A pressing worktable 25 is fixedly connected to the lower end of the clamping and positioning box 11, and a pressing machine 26 is fixedly connected to the upper end of the pressing worktable 25. The pressing machine 26 is located on the outer surface of the clamping and positioning box 11, and a touch screen 27 is provided on the outer surface of the pressing machine 26. After the lens is clamped, the required lens is placed flat in the lens, and the pressing machine 26 is started. The driving element inside the pressing machine 26 pushes the pressure rod down, thereby pressing the lens into the lens and completing the assembly of the lens and lens. The touch screen 27 on the surface of the pressing machine 26 can adjust the downward pressure parameters of the pressing machine 26, and the touch screen 27 will also display the processing status of the pressing machine 26 in real time.

[0023] To address the problems existing in the prior art, this utility model provides a positioning fixture for assembling optical lenses. When the gear 12 rotates and drives the two racks 13 to slide inward simultaneously for clamping, the rotation of the gear 12 drives the external threaded rod 15 to slide downward. In turn, the external threaded rod 15 drives the lifting frame 14 to slide and descend inside the clamping and positioning box 11. The optical lens placed on the lifting frame 14 descends accordingly and completes clamping and positioning during the descent. After the assembly and processing are completed, when the clamping operation is released, the action is reversed. The cylinder 23 moves in the opposite direction, pushing the sliding frame 18 to slide in the opposite direction, driving the racks 13 to rotate the gear 12 in the opposite direction, and the external threaded rod 15 to slide upward, driving the lifting frame 14 to rise, thereby lifting the lens upward and extending it, improving the convenience of the handling operation.

[0024] Working principle: In the first step, cylinder 23 serves as the driving source for the clamping operation. Power is obtained from an external air pump. Upon activation, cylinder 23's output shaft pulls a connected sliding frame 18, causing the rack 13 inside the sliding frame 18 to move accordingly. Since rack 13 meshes with gear 12 rotatably connected inside the clamping and positioning box 11, the sliding of rack 13 drives gear 12 to rotate. Based on the meshing transmission characteristics of gear 12 and rack 13, another rack 13 meshing with the other side of gear 12 will slide synchronously in the opposite direction. The two racks 13 are located inside the two sliding frames 18 respectively and are connected to the sliding frames 18 via fixing bolts 19. Therefore, the opposing sliding of the two racks 13 drives the two sliding frames 18 to move in opposite directions. The circular clamping blocks 21 fixedly connected to the upper ends of the two sliding frames 18 slide in opposite directions, gradually approaching the optical lens and conforming to the lens surface through the rubber sleeves 22 on their surfaces, thus achieving... For clamping and positioning the optical lens, two circular clamping blocks 21 are placed in an alternating manner to accommodate optical lenses of different sizes. At the same time, the rubber sleeve 22 can prevent damage to the lens. After the lens is clamped, positioned, and lowered to the appropriate position, the required lens element is placed flat inside the lens. The crimping machine 26 is then started. The driving element inside the crimping machine 26 pushes the pressure rod down to press the lens into the lens, completing the assembly of the lens and lens. The touch screen 27 on the surface of the crimping machine 26 can adjust the downward pressure parameters of the crimping machine 26 to adapt to the crimping requirements of different lenses and lenses. At the same time, the touch screen 27 will also display the processing status of the crimping machine 26 in real time, making it convenient for operators to monitor the crimping process. The inner wall of the circular groove at the upper end of the clamping and positioning box 11 has a threaded groove, in which rings of different opening sizes can be screwed, thereby adapting and adjusting to lenses of different outer diameters, enhancing the versatility of the clamp for different specifications of optical lenses.

[0025] In the second step, when the gear 12 rotates and drives the two racks 13 to slide inward simultaneously for clamping, the gear 12 has an internal threaded groove 16 and is threadedly connected to the external threaded rod 15. Therefore, the rotation of the gear 12 drives the external threaded rod 15 to slide downward. The external threaded rod 15 is fixedly connected inside the lifting frame 14, which in turn drives the lifting frame 14 to slide down inside the clamping and positioning box 11. The optical lens placed on the lifting frame 14 then descends. After the assembly and processing are completed, when the clamping operation is released, the action is the opposite of the above. The cylinder 23 moves in the opposite direction, pushing the sliding frame 18 to slide in the opposite direction, driving the rack 13 to make the gear 12 rotate in the opposite direction, and the external threaded rod 15 slides upward, driving the lifting frame 14 to rise, thereby lifting the lens upward and extending it, improving the convenience of the handling operation.

[0026] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A positioning fixture for assembling an optical lens, comprising a clamping positioning box (11), wherein the clamping positioning box (11) is provided with an opposing sliding mechanism for driving clamping, the opposing sliding mechanism comprising a gear (12) and two racks (13), the gear (12) being rotatably connected inside the clamping positioning box (11), the two racks (13) being slidably connected inside the clamping positioning box (11), the two racks (13) being located on both sides of the gear (12), and both racks (13) meshing with the gear (12), characterized in that, The clamping and positioning box (11) is provided with a sliding mechanism for lifting the lens. The sliding mechanism includes a lifting frame (14) and an external threaded rod (15). The lifting frame (14) is slidably connected inside the clamping and positioning box (11), and the external threaded rod (15) is fixedly connected inside the lifting frame (14). The gear (12) has an internal threaded groove (16) inside, and the external threaded rod (15) is threaded into the internal threaded groove (16).

2. The positioning fixture for assembling an optical lens as described in claim 1, characterized in that, The clamping and positioning box (11) has two slide rails (17) fixedly connected inside. Among them, two sliding brackets (18) are slidably connected to the outer surfaces of the two slide rails (17).

3. The positioning fixture for assembling an optical lens as described in claim 2, characterized in that, The two racks (13) are located inside the two sliding frames (18), respectively; The two racks (13) and the two sliding frames (18) are all internally threaded with fixing bolts (19).

4. A positioning fixture for assembling an optical lens as described in claim 3, characterized in that, Both of the sliding frames (18) are fixedly connected to the upper ends of a circular clamping block (21); Among them, the outer surfaces of the two ring clamps (21) are fitted with rubber sleeves (22).

5. A positioning fixture for assembling an optical lens as described in claim 4, characterized in that, A cylinder (23) is fixedly connected to the inner surface of the clamping and positioning box (11); The cylinder (23) is fixedly connected to the outer surface of the two sliding frames (18).

6. A positioning fixture for assembling an optical lens as described in claim 5, characterized in that, The clamping and positioning box (11) is fitted with a bearing (24). The gear (12) is sleeved on the inner surface of the bearing (24).

7. A positioning fixture for assembling an optical lens as described in claim 6, characterized in that, The lower end of the clamping and positioning box (11) is fixedly connected to a pressing worktable (25). The upper end of the crimping workbench (25) is fixedly connected to a crimping machine (26).

8. A positioning fixture for assembling an optical lens as described in claim 7, characterized in that, The crimping machine (26) is located on the outer surface of the clamping and positioning box (11); The outer surface of the crimping machine (26) is provided with a touch screen (27).

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