Optical lens fine grinding device

Abstract

This invention relates to the field of optical lens processing technology, specifically to an optical lens fine grinding device. A grinding mechanism is provided on one side of the processing table, and a central shaft driven to rotate by a first motor is installed on the top of the processing table. A mounting frame is fixedly installed on the upper end of the central shaft, and two sets of clamping components are provided on the mounting frame. The two sets of clamping components are symmetrically arranged with respect to the central shaft. When the central shaft rotates, it drives the two sets of clamping components to switch between the grinding station and the clamping station. By setting the rotating central shaft and the two sets of clamping components, grinding and loading / unloading can be carried out simultaneously. When one set of lenses is being ground, the other set can be disassembled and assembled at the same time.

Description

Technical Field

[0001] This invention relates to the field of optical lens processing technology, and more specifically to an optical lens fine grinding apparatus. Background Technology

[0002] In the process of optical lens manufacturing, there is an important step called fine grinding and polishing. This process is related to the quality of optical lenses and has a decisive effect on the light scattering properties of the finished optical lenses.

[0003] In the prior art, invention patent application number CN202511230933.4 discloses a robotic arm polishing device for lens processing, which includes a processing support base, a mechanical actuator, a disc-shaped fixing member, and a polishing mechanism. The disc-shaped fixing member has eight guide grooves evenly distributed in a ring shape. Limiting members are slidably connected within the guide grooves, and the cooperation between the limiting members and the fixing base allows for the stable clamping of lenses of different sizes. The polishing mechanism is installed at the end of the mechanical actuator near the processing support base. The mechanical actuator can be an automated operating structure such as a robotic arm or robotic arm assembly.

[0004] However, the aforementioned grinding and polishing device can only hold one lens at a time for grinding and polishing. Once a lens is finished, the entire processing flow must be interrupted, and the next round of processing can only begin after the worker has disassembled and remounted the lens. This prevents continuous lens processing and reduces overall processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an optical lens polishing apparatus that enables continuous processing of optical lenses, thereby addressing the deficiencies mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An optical lens polishing apparatus includes a processing table with a polishing mechanism on one side. A central shaft driven by a first motor is mounted on the top of the processing table, extending vertically. A mounting frame is fixedly mounted on the upper end of the central shaft, and two sets of clamping assemblies are provided on the mounting frame. The two sets of clamping assemblies are symmetrically arranged with respect to the central shaft. When the central shaft rotates, it drives the two sets of clamping assemblies to switch between a polishing station and a clamping station. Each clamping assembly includes a rotating shaft rotatably mounted on the mounting frame, extending vertically. A fixing plate for fixing the optical lens is fixedly mounted on the upper end of the rotating shaft, and a driven gear is fixedly mounted on the lower end of the rotating shaft. A driving gear driven by a second motor is mounted on the processing table. When the clamping assembly rotates to the polishing station, the corresponding driven gear meshes with the driving gear.

[0007] As a further improvement, the grinding mechanism includes a robotic arm, a grinding disc is mounted on the free end of the robotic arm, and a spray pipe for spraying grinding fluid is also fixedly mounted on the free end of the robotic arm.

[0008] As a further improvement, each fixed plate is provided with a liquid collection tank for holding the grinding fluid.

[0009] As a further improvement, the bottom wall of the liquid tank is provided with a vertically penetrating through hole, through which the corresponding rotating shaft passes. A sealing ring that fits against the outer wall of the rotating shaft is embedded on the inner wall of the through hole.

[0010] As a further improvement, a vertically extending guide rod is fixedly installed at the bottom of the liquid tank, and the guide rod is slidably mounted vertically on the mounting frame. A telescopic component for driving the liquid tank to rise and fall is also installed between the liquid tank and the mounting frame.

[0011] As a further improvement, the telescopic component includes an electric push rod fixedly mounted on a mounting bracket, with the telescopic end of the electric push rod extending upward and fixedly connected to the bottom of the liquid tank.

[0012] As a further improvement, when the clamping assembly rotates to the grinding station, the telescopic component drives the liquid tank to rise, so that the corresponding fixed plate enters the liquid tank; when the clamping assembly rotates to the clamping station, the telescopic component drives the liquid tank to descend, so that the corresponding fixed plate moves out of the liquid tank.

[0013] As a further improvement, a drain pipe is fixedly installed on one side of the liquid tank, with the end of the drain pipe away from the liquid tank inclined downwards; a collection tank for collecting grinding liquid is also provided on one side of the processing table, and when the clamping assembly is rotated to the grinding station, the lower end of the corresponding drain pipe is aligned with the opening of the collection tank.

[0014] As a further improvement, a filter screen for filtering the grinding fluid is detachably installed inside the liquid tank.

[0015] As a further improvement, the bottom of the mounting bracket is equipped with a plurality of universal balls evenly spaced around the central axis, and the top of the processing table is fixedly equipped with an annular support plate coaxial with the central axis, and the top of the annular support plate is provided with an annular groove that matches the universal balls.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting a rotating central axis and two sets of clamping components, grinding and loading / unloading can be carried out simultaneously. While one set of lenses is being ground, the other set can be disassembled and installed at the same time without stopping the machine, which significantly improves processing efficiency. 2. A driven gear is fixedly installed at the lower end of the rotating shaft, and a driving gear is fixedly installed on the motor shaft of the second motor. When the clamping assembly rotates to the grinding station located at the rear, the corresponding driven gear meshes with the driving gear. The second motor drives the driving gear to rotate, and the driving gear drives the driven gear, rotating shaft, fixed plate and optical lens to rotate, thereby continuously changing the angle at which the optical lens is subjected to grinding and improving the uniformity of grinding the optical lens. 3. A vertically extending guide rod is fixedly installed at the bottom of the liquid tank, which allows the liquid tank to move in the vertical direction. When the clamping assembly rotates to the clamping position, the liquid tank is driven to descend by the retraction of the electric push rod, so that the corresponding fixed plate is moved out of the liquid tank, thereby facilitating the installation and removal of optical lenses on the fixed plate. 4. The bottom of the mounting bracket is equipped with a universal ball joint, and the top of the annular support plate is equipped with an annular groove that matches the universal ball joint, thereby improving the stability of the mounting bracket rotation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 yes Figure 1 A cross-sectional view; Figure 3 This is a schematic diagram of the liquid-holding tank according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the bottom of the mounting bracket according to an embodiment of the present invention.

[0019] In the diagram: 1-Processing table; 2-Grinding mechanism; 3-Cabinet; 4-Robotic arm; 5-Grinding disc; 6-Spray pipe; 7-First motor; 8-Central shaft; 9-Driven bevel gear; 10-Driving bevel gear; 11-Mounting bracket; 12-Clamping assembly; 13-Rotating shaft; 14-Fixing plate; 15-Driven gear; 16-Second motor; 17-Driving gear; 18-Liquid tank; 19-Through hole; 20-Sealing ring; 21-Guide rod; 22-Electric push rod; 23-Drain pipe; 24-Collection tank; 25-Filter screen; 26-Universal ball; 27-Annular support plate; 28-Annular groove. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 4 As shown, an optical lens polishing apparatus includes a processing table 1, with a polishing mechanism 2 located at the left rear of the processing table 1. The polishing mechanism 2 includes a cabinet 3, with a robotic arm 4 mounted on the top of the cabinet 3. A polishing disc 5, driven by a polishing motor, is mounted on the free end of the robotic arm 4. The robotic arm 4 drives the polishing disc 5 to perform polishing operations on the optical lens. In addition, a fixed base is provided on the side of the free end of the robotic arm 4, and a spray pipe 6 for spraying polishing fluid is fixedly mounted on the fixed base. The outlet end of the spray pipe 6 faces the bottom of the polishing disc 5, and polishing fluid is sprayed onto the optical lens through the spray pipe 6 during polishing.

[0022] like Figure 2 As shown, a central shaft 8 driven to rotate by a first motor 7 is mounted on the top of the processing table 1. The central shaft 8 extends vertically and is rotatably mounted on the top of the processing table 1 via bearings. The processing table 1 has a mounting cavity, and the lower end of the central shaft 8 extends into the mounting cavity and is fixedly mounted with a driven bevel gear 9. The first motor 7 is mounted in the mounting cavity by bolts, and a driving bevel gear 10 that meshes with the driven bevel gear 9 is fixedly mounted on the motor shaft of the first motor 7.

[0023] A mounting bracket 11 is bolted to the upper end of the central shaft 8. The mounting bracket 11 has two sets of clamping assemblies 12 for clamping optical lenses. The two sets of clamping assemblies 12 are symmetrically arranged relative to the central shaft 8. When the central shaft 8 rotates, it drives the mounting bracket 11 and the two sets of clamping assemblies 12 to switch between the grinding station and the clamping station. Specifically, each time the central shaft 8 rotates 180 degrees, when one set of clamping assemblies 12 rotates to the rear grinding station, the other set of clamping assemblies 12 rotates to the front clamping station. While the grinding mechanism 2 grinds the optical lens at the grinding station, the operator can disassemble and re-clamp the optical lens on the clamping assembly 12 at the clamping station.

[0024] The clamping assembly 12 includes a rotating shaft 13 rotatably mounted on a mounting bracket 11 via bearings. The rotating shaft 13 extends vertically, and a fixing plate 14 for fixing optical lenses is bolted to the upper end of the rotating shaft 13. The fixing plate 14 may be a three-jaw chuck. A driven gear 15 is fixedly mounted to the lower end of the rotating shaft 13, such as... Figure 2As shown, a second motor 16 is bolted into the mounting cavity of the processing table 1. The motor axis of the second motor 16 extends upward to the top of the processing table 1 and a drive gear 17 is fixedly mounted thereon. When the clamping assembly 12 rotates to the grinding station located at the rear, the corresponding driven gear 15 meshes with the drive gear 17. During the grinding of the optical lens, the second motor 16 drives the drive gear 17 to rotate, which in turn drives the driven gear 15, the rotating shaft 13, the fixed plate 14, and the optical lens to rotate, thereby continuously changing the angle at which the optical lens is subjected to grinding and improving the uniformity of the grinding of the optical lens.

[0025] To facilitate the collection of the grinding fluid sprayed by the spray pipe 6, each fixed plate 14 is provided with a collection tank 18 for holding the grinding fluid. The bottom wall of the collection tank 18 has a vertical through hole 19, through which the corresponding rotating shaft 13 passes. Figure 3 As shown, a sealing ring 20 is embedded on the inner wall of the through hole 19, which fits against the outer wall of the rotating shaft 13 to prevent leakage of liquid from the gap between the through hole 19 and the rotating shaft 13. The size of the liquid holding tank 18 is set to cover the movement range of the grinding disc 5 during the fine grinding process, ensuring that the grinding liquid falls completely into the liquid holding tank 18.

[0026] like Figure 4 As shown, a vertically extending guide rod 21 is fixedly installed at the bottom of the liquid tank 18. The guide rod 21 is vertically slidably mounted on the mounting frame 11. The mounting frame 11 is provided with guide holes that match the guide rod 21, thereby allowing the liquid tank 18 to move in the vertical direction. A telescopic component for driving the liquid tank 18 to rise and fall is also installed between the liquid tank 18 and the mounting frame 11. The telescopic component includes an electric push rod 22 fixedly mounted on the mounting frame 11 by screws. The telescopic end of the electric push rod 22 extends upward and is fixedly connected to the bottom of the liquid tank 18 by screws.

[0027] In use, when the clamping assembly 12 rotates to the grinding station, the electric push rod 22 extends to drive the liquid-collecting tank 18 to rise, allowing the corresponding fixing plate 14 to enter the liquid-collecting tank 18 and collect the polishing liquid sprayed by the spray pipe 6. When the clamping assembly 12 rotates to the mounting station, the electric push rod 22 retracts to drive the liquid-collecting tank 18 to descend, allowing the corresponding fixing plate 14 to move out of the liquid-collecting tank 18, thus facilitating the installation and removal of optical lenses on the fixing plate 14.

[0028] A drain pipe 23 is welded to one side of the liquid-holding tank 18, with the end of the drain pipe 23 away from the liquid-holding tank 18 inclined downwards. A collection tank 24 for collecting grinding liquid is also provided behind the processing table 1. When the clamping assembly 12 rotates to the grinding position, the lower end of the corresponding drain pipe 23 is aligned with the opening of the collection tank 24, and the grinding liquid in the liquid-holding tank 18 flows into the collection tank 24 through the drain pipe 23 for unified collection and treatment of the grinding liquid.

[0029] The liquid tank 18 is equipped with a detachable filter screen 25 for filtering the grinding liquid. The filter screen 25 filters the debris mixed in the grinding liquid so that the grinding liquid can be reused later. The filter screen 25 can be removed from the liquid tank 18 for cleaning or replacement.

[0030] The bottom of the mounting bracket 11 is fitted with multiple ball seats evenly spaced around the central axis 8 via screws. Universal balls 26 are rotatably mounted on the bottom of each ball seat. The top of the processing table 1 is fixed with an annular support plate 27 coaxial with the central axis 8 via screws. The top of the annular support plate 27 has an annular groove 28 that matches the universal balls 26. By providing support for the mounting bracket 11 with the universal balls 26, the stability of the mounting bracket 11's rotation is improved.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical lens grinding apparatus, characterized in that: The system includes a processing table with a grinding mechanism on one side. A central shaft driven by a first motor is mounted on the top of the processing table, extending vertically. A mounting frame is fixedly mounted on the upper end of the central shaft, and two sets of clamping assemblies are provided on the mounting frame. The two sets of clamping assemblies are symmetrically arranged with respect to the central shaft. When the central shaft rotates, it drives the two sets of clamping assemblies to switch between a grinding station and a clamping station. The clamping assembly includes a rotating shaft rotatably mounted on the mounting frame, extending vertically. A fixing plate for fixing optical lenses is fixedly mounted on the upper end of the rotating shaft, and a driven gear is fixedly mounted on the lower end of the rotating shaft. A driving gear driven by a second motor is mounted on the processing table. When the clamping assembly rotates to the grinding station, the corresponding driven gear meshes with the driving gear.

2. The optical lens polishing apparatus as described in claim 1, characterized in that: The grinding mechanism includes a robotic arm, a grinding disc is mounted on the free end of the robotic arm, and a spray pipe for spraying grinding fluid is also fixedly mounted on the free end of the robotic arm.

3. The optical lens polishing apparatus as described in claim 2, characterized in that: Each fixed plate has a liquid collection tank underneath for holding the grinding fluid.

4. The optical lens polishing apparatus as described in claim 3, characterized in that: The bottom wall of the liquid tank is provided with a vertical through hole, and the corresponding rotating shaft passes through the through hole. A sealing ring that fits against the outer wall of the rotating shaft is embedded in the inner wall of the through hole.

5. The optical lens polishing apparatus as described in claim 3, characterized in that: A vertically extending guide rod is fixedly installed at the bottom of the liquid tank. The guide rod is slidably mounted on the mounting frame. A telescopic component for driving the liquid tank to rise and fall is also installed between the liquid tank and the mounting frame.

6. The optical lens polishing apparatus as described in claim 5, characterized in that: The telescopic component includes an electric push rod fixedly mounted on a mounting bracket, with the telescopic end of the electric push rod extending upward and fixedly connected to the bottom of the liquid tank.

7. The optical lens grinding apparatus as described in claim 5, characterized in that: When the clamping assembly rotates to the grinding station, the telescopic component drives the liquid tank to rise, causing the corresponding fixed plate to enter the liquid tank; when the clamping assembly rotates to the clamping station, the telescopic component drives the liquid tank to descend, causing the corresponding fixed plate to move out of the liquid tank.

8. The optical lens polishing apparatus as described in claim 3, characterized in that: A drain pipe is fixedly installed on one side of the liquid tank, with the end of the drain pipe away from the liquid tank inclined downwards; a collection tank for collecting grinding liquid is also provided on one side of the processing table. When the clamping assembly is rotated to the grinding station, the lower end of the corresponding drain pipe is aligned with the opening of the collection tank.

9. The optical lens polishing apparatus as described in claim 6, characterized in that: The liquid-holding tank is equipped with a detachable filter screen for filtering the grinding liquid.

10. The optical lens polishing apparatus as described in claim 1, characterized in that: The bottom of the mounting frame is equipped with multiple universal balls evenly spaced around the central axis, and the top of the processing table is fixedly equipped with an annular support plate coaxial with the central axis. The top of the annular support plate is provided with an annular groove that matches the universal balls.

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