Clamping device for machining optical lenses

Abstract

The utility model discloses a clamping device for optical lens processing, including mount, still include the first electric telescopic link of installing on the mount, the resistance block of fixed connection in the first electric telescopic link output, the slide bar of sliding connection on the mount, the spring of fixed connection between slide bar and mount, the mount frame of fixed connection on slide bar, the rotary shaft of rotation connection on the mount frame, the cam of fixed connection on rotary shaft, the gyro wheel of installing on the mount, the drive assembly of installing on the mount frame, the adjusting assembly of installing on the rotary shaft and the clamping assembly of installing on the adjusting assembly, through adjusting assembly makes adjacent clamping assembly each other close or far away, and drive assembly drives the cam to roll on the gyro wheel. Through rotary shaft drives clamping assembly rotation, realized in the clamping state automatic overturning optical lens, avoided manual overturning and secondary clamping, improved the double -sided processing precision, and greatly promoted production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lens processing technology, specifically to a clamping device for processing optical lenses. Background Technology

[0002] In the optical lens manufacturing process, the stability, accuracy, and surface protection of the lens clamping directly affect the processing precision and the yield of finished products. Stable and damage-free clamping is a key link to ensure the smooth progress of lens grinding, polishing and other processes. This device can achieve precise positioning and stable clamping of optical lenses, avoid scratches and deformation during clamping, adapt to the processing needs of different lens specifications, and provide a reliable guarantee for high-precision optical lens processing.

[0003] According to the patent application CN219275652U, "This utility model provides a clamping device for optical lens processing, including a fixed plate, a driving assembly, a rotating assembly, and a clamping assembly. The driving assembly includes a driving motor and a driving gear, with the driving gear coaxially connected to the driving motor. The rotating assembly includes a driven gear and a rotating table, with the driven gear meshing with the driving gear and the rotating table coaxially connected to the driven gear. The clamping assembly is located on the rotating table and includes electric push rods, sliders, and clamping blocks. Multiple electric push rods are arranged in a spoke-like pattern, with the outer end of each electric push rod being the moving end. Each electric push rod has a slider at its outer end, and each slider has a clamping block. This clamping device can clamp optical lenses from multiple angles, providing higher clamping stability and preventing the optical lenses from falling off during subsequent rotation. The rotating assembly can drive the clamping assembly to rotate in all directions, facilitating comprehensive production and processing of the optical lenses and increasing processing efficiency."

[0004] However, based on the above, the following problems still exist: The device clamps the lens by moving several clamping blocks synchronously. However, it can usually only clamp the lens in a fixed position. When the other side of the lens needs to be processed, the clamping blocks must be released, the lens must be taken out, manually flipped, and put back into the clamping blocks to be clamped again. This manual flipping method means that each flip requires re-alignment and positioning. The positioning error introduced by the secondary clamping makes it difficult to guarantee the coaxiality of double-sided processing. Moreover, manual operation is inefficient and seriously restricts the processing cycle in mass production. Utility Model Content

[0005] The purpose of this invention is to provide a clamping device for processing optical lenses, so as to solve the problem of needing to re-clamp when flipping the lens as mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for processing optical lenses, including a mounting base, a first electric telescopic rod mounted on the mounting base, a stop block fixedly connected to the output end of the first electric telescopic rod, a slide rod slidably connected to the mounting base, a spring fixedly connected between the slide rod and the mounting base, a mounting frame fixedly connected to the slide rod, a rotating shaft rotatably connected to the mounting frame, a cam fixedly connected to the rotating shaft, a roller mounted on the mounting base, a drive assembly mounted on the mounting frame, an adjustment assembly mounted on the rotating shaft, and a clamping assembly mounted on the adjustment assembly. The adjustment assembly causes adjacent clamping assemblies to move closer or further apart, and the drive assembly drives the cam to roll on the roller.

[0007] In the preferred embodiment of this technical solution, the cam is an eccentric wheel with two protrusions, and the two protrusions are arranged symmetrically.

[0008] According to the preferred embodiment of this technical solution, the drive component includes a motor fixedly connected to the mounting frame, a first gear fixedly connected to the output end of the motor, and a second gear meshing with the first gear. The second gear is fixedly connected to the rotating shaft. The output end of the motor drives the rotating shaft to rotate in a preset direction on the mounting frame through the meshing of the first gear and the second gear.

[0009] According to the preferred embodiment of this technical solution, the adjustment component includes a slotted plate fixedly connected to the rotating shaft, a bidirectional threaded rod rotatably connected to the slotted plate, and a slider threadedly connected to the bidirectional threaded rod. The rotation of the bidirectional threaded rod drives two adjacent sliders to move closer or further apart.

[0010] In the preferred embodiment of this technical solution, the groove plate has a groove at the corresponding position of the slider, and the slider slides in the groove when the bidirectional threaded rod rotates.

[0011] According to the preferred embodiment of this technical solution, the clamping assembly includes a second electric telescopic rod fixedly connected to the slider, a mounting rod fixedly connected to the output end of the second electric telescopic rod, a locking block inserted into the mounting rod, a protective pad fixedly connected to the locking block, and a bolt threadedly connected to the mounting rod. After the bolt is removed from the mounting rod, the locking block can slide on the mounting rod.

[0012] Based on the preferred embodiment of this technical solution, the card block has a circular groove that matches the bolt. When the card block is installed on the mounting rod and the bolt is screwed into the mounting rod, the bolt passes through the circular groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The cam is driven to roll on the roller by the drive component, which drives the mounting frame and clamping assembly to move as a whole. At the same time, the clamping assembly is rotated by the rotating shaft, which realizes the automatic flipping of the optical lens in the clamping state. This avoids manual flipping and secondary clamping, eliminates the coaxiality error caused by secondary positioning, improves the double-sided processing accuracy, and greatly improves production efficiency.

[0014] 2. The bidirectional threaded rod in the adjustment assembly drives the slider to move synchronously, which can symmetrically adjust the clamping distance, ensuring that the center of the lens is always on the rotation axis, avoiding eccentricity during flipping, adapting to different lens specifications, and ensuring precise and stable adjustment.

[0015] 3. Replaceable clips and protective pads. The protective pads are made of elastic material, which effectively protects the lens surface from scratches when clamped. The clips are detachably connected to the mounting rod by bolts, which facilitates quick replacement according to the shape of the lens, improving the versatility and ease of maintenance of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the clamping device for optical lens processing according to the present invention; Figure 2 This is a cross-sectional view of the mounting base of this utility model; Figure 3 This is a cross-sectional view of the mounting bracket of this utility model; Figure 4 This is a schematic cross-sectional view of the groove plate of this utility model; Figure 5 This is an exploded view of the clamping component of this utility model.

[0017] In the diagram: 11. Mounting base; 12. First electric telescopic rod; 13. Stop block; 14. Slide rod; 15. Spring; 16. Mounting bracket; 17. Rotating shaft; 18. Cam; 19. Roller; 21. Motor; 22. First gear; 23. Second gear; 31. Slot plate; 32. Bidirectional threaded rod; 33. Slider; 41. Second electric telescopic rod; 42. Mounting rod; 43. Locking block; 44. Protective pad; 45. Bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 - Figure 5This utility model provides an embodiment of a clamping device for processing optical lenses, including a mounting base 11, a first electric telescopic rod 12 mounted on the mounting base 11, a stop block 13 fixedly connected to the output end of the first electric telescopic rod 12, a slide rod 14 slidably connected to the mounting base 11, a spring 15 fixedly connected between the slide rod 14 and the mounting base 11, a mounting frame 16 fixedly connected to the slide rod 14, a rotating shaft 17 rotatably connected to the mounting frame 16, a cam 18 fixedly connected to the rotating shaft 17, a roller 19 mounted on the mounting base 11, a drive assembly mounted on the mounting frame 16, an adjustment assembly mounted on the rotating shaft 17, and a clamping assembly mounted on the adjustment assembly. The adjustment assembly allows adjacent clamping assemblies to move closer or further apart. The drive assembly drives the cam 18 to roll on the roller 19. The first electric telescopic rod 12 can precisely control the extension length, driving the stop block 13 to move. This is used to position the lens during lens processing, preventing the lens from tilting or shifting. The spring 15 provides a restoring force, allowing the mounting bracket 16 to maintain its initial position when there is no external force. The cam 18 has an eccentric structure. When it rolls on the roller 19, the change in the profile of the cam 18, due to the fixed roller 19, will push the mounting bracket 16 to move along the slide rod 14. This allows the lens to be lifted when flipping, preventing the lens from colliding with the stop block 13. The drive assembly can drive the rotating shaft 17 to rotate within ±180°, preventing excessive rotation from causing wire entanglement. Through the above linkage, the lens can be automatically flipped in the clamped state, avoiding secondary clamping.

[0020] Please see Figure 1 - Figure 3 A further solution based on this embodiment is: the cam 18 is an eccentric wheel with two protrusions, and the two protrusions are symmetrically arranged. The symmetrical arrangement of the two protrusions allows the cam 18 to lift the lens regardless of whether it is rotating forward or backward, thus improving the motion efficiency; at the same time, the symmetrical structure ensures motion balance, reduces vibration, and makes the flipping process more stable.

[0021] Please see Figure 3 A further solution based on this embodiment is as follows: the drive assembly includes a motor 21 fixedly connected to the mounting bracket 16, a first gear 22 fixedly connected to the output end of the motor 21, and a second gear 23 meshing with the first gear 22. The second gear 23 is fixedly connected to the rotating shaft 17. The output end of the motor 21 drives the rotating shaft 17 to rotate in a preset direction on the mounting bracket 16 through the meshing of the first gear 22 and the second gear 23. The motor 21 is a servo motor, which can achieve precise angle control. The gear transmission has the advantages of smooth transmission and high precision, which can accurately control the rotation angle of the rotating shaft 17, thereby accurately controlling the position of the cam 18 and the movement stroke of the mounting bracket 16, ensuring the accuracy of the flip angle.

[0022] Please see Figure 1 , Figure 2 and Figure 4 A further solution based on this embodiment is as follows: The adjustment component includes a slotted plate 31 fixedly connected to the rotating shaft 17, a bidirectional threaded rod 32 rotatably connected to the slotted plate 31, and a slider 33 threadedly connected to the bidirectional threaded rod 32. The rotation of the bidirectional threaded rod 32 drives two adjacent sliders 33 to move closer or further apart from each other. The slotted plate 31 rotates synchronously with the rotating shaft 17, thereby driving the clamping component to rotate as a whole. The bidirectional threaded rod 32 has two sections of threads with opposite directions of rotation. When rotating, it can make the two sliders 33 move synchronously in opposite directions, realize the symmetrical adjustment of the clamping distance, ensure that the center of the lens is always located on the rotation axis, avoid eccentricity, and effectively ensure the synchronization rate through mechanical structure adjustment.

[0023] Please see Figure 4 A further solution based on this embodiment is as follows: the groove plate 31 has a groove at the corresponding position of the slider 33, and the slider 33 slides in the groove when the bidirectional threaded rod 32 rotates. The groove guides the slider 33, prevents the slider 33 from deflecting during movement, ensures that the clamping assembly always moves in a straight line, and improves clamping accuracy and stability.

[0024] Please see Figure 4 and Figure 5 A further solution based on this embodiment is as follows: The clamping assembly includes a second electric telescopic rod 41 fixedly connected to the slider 33, a mounting rod 42 fixedly connected to the output end of the second electric telescopic rod 41, a locking block 43 inserted into the mounting rod 42, a protective pad 44 fixedly connected to the locking block 43, and a bolt 45 threadedly connected to the mounting rod 42. After the bolt 45 is removed from the mounting rod 42, the locking block 43 can slide on the mounting rod 42. The second electric telescopic rod 41 can be independently controlled to extend and retract, so that the clamping assembly can adapt to lenses of different thicknesses and apply appropriate clamping force. The locking block 43 is inserted into the mounting rod 42 and fixed by the bolt 45, which facilitates the replacement of locking blocks of different specifications to adapt to lenses of different shapes, and can be replaced in time when the protective pad 44 is deformed, preventing the deformed protective pad 44 from causing lens positioning displacement. The protective pad 44 is made of elastic materials such as rubber or polyurethane to avoid damaging the lens surface.

[0025] Please see Figure 5 A further solution based on this embodiment is as follows: a circular groove adapted to the bolt 45 is provided on the locking block 43. When the locking block 43 is installed on the mounting rod 42 and the bolt 45 is screwed into the mounting rod 42, the bolt 45 passes through the circular groove. The circular groove can limit the locking block 43 when the bolt 45 passes through, preventing the locking block 43 from falling off.

[0026] Working principle: Based on the dimensions of the optical lens to be processed, by rotating the bidirectional threaded rod 32, the two sliders 33 are driven to move synchronously in opposite directions within the groove of the slot plate 31. The distance between the two clamping components is adjusted to a suitable position, and the lens is placed between the clamping components. The second electric telescopic rod 41 is extended, pushing the mounting rod 42 and the locking block 43 towards the lens until the protective pad 44 contacts the lens and applies an appropriate clamping force, thus completing the clamping of the lens. At this time, the first electric telescopic rod 12 can drive the abutment block 13 to extend, providing auxiliary pushing and positioning of the lens to prevent the lens from tilting or shifting during processing. When it is necessary to flip the lens to process the other side, the motor 21 is started. The motor 21 transmits power through the meshing of the first gear 22 and the second gear 23. The rotating shaft 17 is driven to rotate on the mounting bracket 16. The rotating shaft 17 drives the cam 18 and the slot plate 31 to rotate synchronously. The cam 18 rolls on the roller 19. Since the cam 18 is an eccentric wheel with two symmetrical protrusions, its contour change will push the mounting bracket 16 to overcome the elastic force of the spring 15 and move along the slide rod 14, causing the mounting bracket 16 to move upward, thereby driving the clamping assembly and lens to lift up, avoiding the lens from colliding with the stop block 13 during the flipping process. At the same time, the rotation of the slot plate 31 drives the clamping assembly and lens to rotate together, realizing the flipping of the lens. The lens completes a 180° flip. During the flipping process, the spring 15 provides a restoring force to ensure that the cam 18 always keeps in contact with the roller 19. After the flipping is completed, the other side can be processed.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping device for processing optical lenses, comprising a mounting base (11), characterized in that: It also includes a first electric telescopic rod (12) mounted on the mounting base (11), a stop block (13) fixedly connected to the output end of the first electric telescopic rod (12), a slide rod (14) slidably connected to the mounting base (11), a spring (15) fixedly connected between the slide rod (14) and the mounting base (11), a mounting bracket (16) fixedly connected to the slide rod (14), a rotating shaft (17) rotatably connected to the mounting bracket (16), a cam (18) fixedly connected to the rotating shaft (17), a roller (19) mounted on the mounting base (11), a drive assembly mounted on the mounting bracket (16), an adjustment assembly mounted on the rotating shaft (17), and a clamping assembly mounted on the adjustment assembly. The adjustment assembly makes adjacent clamping assemblies move closer or further apart from each other, and the drive assembly drives the cam (18) to roll on the roller (19).

2. The clamping device for processing optical lenses according to claim 1, characterized in that: The cam (18) is an eccentric wheel with two protrusions, and the two protrusions are symmetrically arranged.

3. The clamping device for processing optical lenses according to claim 2, characterized in that: The drive assembly includes a motor (21) fixedly connected to the mounting bracket (16), a first gear (22) fixedly connected to the output end of the motor (21), and a second gear (23) meshing with the first gear (22). The second gear (23) is fixedly connected to the rotating shaft (17). The output end of the motor (21) drives the rotating shaft (17) to rotate in a preset direction on the mounting bracket (16) through the meshing of the first gear (22) and the second gear (23).

4. The clamping device for processing optical lenses according to claim 3, characterized in that: The adjustment assembly includes a slotted plate (31) fixedly connected to the rotating shaft (17), a bidirectional threaded rod (32) rotatably connected to the slotted plate (31), and a slider (33) threadedly connected to the bidirectional threaded rod (32). The rotation of the bidirectional threaded rod (32) drives two adjacent sliders (33) to move closer or further apart from each other.

5. The clamping device for processing optical lenses according to claim 4, characterized in that: The groove plate (31) has a groove at the corresponding position of the slider (33), and the slider (33) slides in the groove when the bidirectional threaded rod (32) rotates.

6. The clamping device for processing optical lenses according to claim 5, characterized in that: The clamping assembly includes a second electric telescopic rod (41) fixedly connected to the slider (33), a mounting rod (42) fixedly connected to the output end of the second electric telescopic rod (41), a locking block (43) inserted into the mounting rod (42), a protective pad (44) fixedly connected to the locking block (43), and a bolt (45) threadedly connected to the mounting rod (42). After the bolt (45) is removed from the mounting rod (42), the locking block (43) can slide on the mounting rod (42).

7. The clamping device for processing optical lenses according to claim 6, characterized in that: The locking block (43) has a circular groove that matches the bolt (45). When the locking block (43) is installed on the mounting rod (42) and the bolt (45) is screwed into the mounting rod (42), the bolt (45) passes through the circular groove.

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