Clamp for grinding and polishing concave-convex surface of optical lens

Abstract

The fixture for grinding and polishing the concave-convex surface of the optical lens comprises a grinding mechanism, a supporting mechanism and a fixing mechanism, the grinding mechanism comprises a support and a grinding head, and the grinding head is fixed to the support; the supporting mechanism comprises a base and a support, the support is arranged on the base, a locking assembly used for locking the support is arranged on the base, a groove matched with the convex face of the lens is formed in one side of the support, and a protruding block matched with the concave face of the lens is arranged on the other side of the support. The lens grinding and polishing device has the beneficial effects that through the design of the groove and the convex block of the support and the effect of the fixing mechanism, it can be ensured that the lens keeps stable position and posture in the grinding and polishing process, machining errors caused by movement or deviation of the lens are reduced, the machining precision is improved, and the machining efficiency is improved. In addition, the groove and the protruding block of the support can play a certain buffering role, the impact force on the lens in the grinding and polishing process is reduced, and the possibility that the lens is damaged is reduced.

Description

Technical Field

[0001] The present application relates to the field of optical lens production, and in particular to a fixture for grinding and polishing concave and convex surfaces of optical lenses. Background Art

[0002] When producing optical lenses, the optical mirror surface needs to be ground and polished to produce a certain curvature so that the light can be concentrated. When grinding and polishing the concave and convex surfaces of the optical lens, a fixture is needed to clamp the optical lens.

[0003] In the related technology, a concave spherical surface grinding and polishing fixture for an optical lens is proposed, including a base and an upper fixing frame, the upper fixing frame is arranged at the top of the base, the top of the base is fixedly provided with a fixture body, the fixture body is arranged at the bottom of the upper fixing frame, the top of the fixture body is provided with a lens groove, the bottom end of the lens groove extends to the inner cavity of the fixture body, and a storage groove is provided on the side walls around the lens groove, one end of the storage groove extends to the inner cavity of the side wall of the lens groove, a force plate is provided in the storage groove, a first rotating shaft is fixedly provided on one side of the force plate, one end of the first rotating shaft passes through one side wall of the lens groove and extends to one side of the outer wall of the fixture body, a second rotating shaft is provided at the top of the upper fixing frame, the bottom end of the second rotating shaft passes through the upper fixing frame and extends to one side of the bottom end of the upper fixing frame, a mounting plate is fixedly provided at the bottom of the second rotating shaft, a grinder is provided at the bottom end of the mounting plate, the top of the grinder is threadedly connected to the bottom of the mounting plate, and the grinder is arranged directly above the lens groove.

[0004] Regarding the above-mentioned related technologies, there are the following defects: the two sides of the lens are convex and concave respectively, and the clamp body fixes the four sides of the lens, and the two sides of the lens are in a suspended state. When the grinder grinds the lens, the lens is easily deformed, affecting the processing quality. Utility Model Content

[0005] The purpose of this application is to overcome the above technical deficiencies and propose a fixture for grinding and polishing the concave and convex surfaces of optical lenses to solve the technical problem of easy deformation of lenses during the grinding process in the prior art.

[0006] To achieve the above technical objectives, the technical solution of the present application provides a fixture for grinding and polishing the concave and convex surfaces of an optical lens, comprising a grinding mechanism, the grinding mechanism comprising a bracket and a grinding head, the grinding head being fixed to the bracket;

[0007] A support mechanism, the support mechanism comprising a base and a support, the support being provided on the base, the base being provided with a locking assembly for locking the support, one side of the support being provided with a groove adapted to the convex surface of the lens, and the other side of the support being provided with a protrusion adapted to the concave surface of the lens; and,

[0008] The fixing mechanism is arranged on the base and is used to fix the lens on the support.

[0009] In some embodiments, an elastic layer is provided on both the protrusion and the groove.

[0010] In some embodiments, an anti-slip layer is provided on the elastic layer.

[0011] In some embodiments, the locking assembly includes a socket provided on the base, a slot corresponding to the socket is provided on the support, and an insertion rod is inserted into the socket and the slot.

[0012] In some embodiments, the end of the plunger is spherical.

[0013] In some embodiments, a spring is sleeved on the insertion rod, one end of the spring is connected to the insertion rod, and the other end of the spring is connected to the base. The spring is in a stretched state, and the spring causes the insertion rod to tend to slide toward the slot.

[0014] In some embodiments, the fixing mechanism includes a first negative pressure hole provided on the support, a second negative pressure hole and a negative pressure pump are provided on the base, the outlet of the first negative pressure hole is connected to the inlet of the second negative pressure hole, and the outlet of the second negative pressure hole is connected to the inlet of the negative pressure pump.

[0015] In some embodiments, a filter is provided at the inlet of the second negative pressure hole.

[0016] In some embodiments, a scraper is rotatably connected to the outer side of the filter, the scraper abuts against the filter, and a driving member for driving the scraper to rotate is provided on the filter.

[0017] In some embodiments, the driving member includes an impeller rotatably connected to the inner side of the filter, and the impeller is connected to the scraper.

[0018] Compared with the prior art, the beneficial effects of the present application include: through the groove and protrusion design of the support and the function of the fixing mechanism, it is possible to ensure that the lens maintains a stable position and posture during the grinding and polishing process, reduce the processing error caused by the movement or offset of the lens, and improve the processing accuracy. In addition, the groove and protrusion of the support can play a certain buffering role, reduce the impact force on the lens during the grinding and polishing process, and reduce the possibility of damage to the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the grinding and polishing fixture provided by this application;

[0020] Figure 2 This application provides Figure 1 A magnified view of the structure in the middle.

[0021] Description of reference numerals:

[0022] 1. Grinding mechanism; 11. Bracket; 12. Grinding head; 2. Support mechanism; 21. Base; 22. Support; 23. Groove; 24. Bump; 25. Elastic layer; 26. Anti-slip layer; 3. Locking assembly; 31. Socket; 32. Slot; 33. Rod; 34. Spring; 4. Fixing mechanism; 41. First negative pressure hole; 42. Second negative pressure hole; 43. Negative pressure pump; 44. Filter; 45. Scraper; 5. Driving member; 51. Impeller. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] The present application provides a fixture for polishing the concave and convex surfaces of optical lenses, the structure of which is as follows: Figure 1 - Figure 2 As shown, it includes a grinding mechanism 1, a supporting mechanism 2 and a fixing mechanism 4.

[0025] The grinding mechanism 1 includes a bracket 11 and a grinding head 12 , and the grinding head 12 is fixed on the bracket 11 .

[0026] The support mechanism 2 includes a base 21 and a support 22. The support 22 is arranged on the base 21. The base 21 is provided with a locking component 3 for locking the support 22. One side of the support 22 is provided with a groove 23 adapted to the convex surface of the lens, and the other side of the support 22 is provided with a protrusion 24 adapted to the concave surface of the lens.

[0027] The fixing mechanism 4 is provided on the base 21 and is used to fix the lens on the support.

[0028] During use, the convex surface of the lens is placed into the groove 23 of the support 22, with the concave surface aligned with the protrusion 24, ensuring the correct lens position. The locking assembly 3 is activated to secure the support 22 to the base 21. The lens is securely fixed to the support 22 using the fixing mechanism 4. The polishing mechanism 1 is activated, and the polishing head 12 begins to polish the concave and convex surfaces of the lens. During the processing, the lens remains in the correct position and posture, ensuring processing accuracy and quality.

[0029] In the present application, the design of the groove 23 and the protrusion 24 of the support 22, as well as the function of the fixing mechanism 4, can ensure that the lens maintains a stable position and posture during the grinding and polishing process, reduce the processing error caused by the movement or offset of the lens, and improve the processing accuracy. In addition, the groove 23 and the protrusion 24 of the support 22 can play a certain buffering role, reduce the impact force on the lens during the grinding and polishing process, and reduce the possibility of damage to the lens.

[0030] To reduce the possibility of lens damage, please refer to Figure 1 In a preferred embodiment, an elastic layer 25 is provided on both the protrusion 24 and the groove 23 .

[0031] During use, when the lens is placed on the support 22, the convex surface of the lens contacts the elastic layer 25 on the groove 23, and the concave surface contacts the elastic layer 25 on the bump 24. The elastic layer 25 is made of an elastic material, such as rubber or silicone. When the lens contacts the elastic layer 25, it deforms to a certain extent, acting as a buffer, preventing hard contact between the lens and the support 22, reducing the impact force on the lens during placement, and lowering the risk of damage to the lens. Furthermore, the deformation of the elastic layer 25 allows the lens to better fit the groove 23 and bump 24, ensuring accurate positioning of the lens on the support 22. The elastic force of the elastic layer 25 can fix the lens between the groove 23 and bump 24 to a certain extent, preventing the lens from sliding or shifting during the polishing process, thereby improving the lens's positioning accuracy.

[0032] To improve the stability of lens fixing, please refer to Figure 1 In a preferred embodiment, an anti-slip layer 26 is provided on the elastic layer 25 .

[0033] During use, when the lens is placed on the support 22, the convex and concave surfaces of the lens contact the elastic layer 25 on the groove 23 and the bump 24, respectively, and also contact the anti-slip layer 26 on the elastic layer 25. The anti-slip layer 26 is typically made of a material with a high coefficient of friction, such as rubber particles or an anti-slip texture. When the lens contacts the anti-slip layer 26, friction is generated between the anti-slip layer 26 and the lens. This frictional force can enhance the fixation of the lens on the support 22. During the grinding and polishing process, the lens may be subjected to various external forces, such as pressure and friction from the grinding head 12. The friction of the anti-slip layer 26 can prevent the lens from sliding or shifting under the influence of these external forces, ensuring that the lens always remains in the correct position, thereby improving the accuracy and quality of the grinding and polishing.

[0034] To secure the support 22, refer to Figure 1 In a preferred embodiment, the locking assembly 3 includes a socket 31 provided on the base 21, and a slot 32 corresponding to the socket 31 is provided on the support 22, and an insertion rod 33 is inserted into the socket 31 and the slot 32.

[0035] During use, the support 22 is placed on the base 21 and adjusted to a suitable position so that the lens can be accurately placed on the support 22 for grinding and polishing. At this time, ensure that the socket 31 on the base 21 corresponds to the slot 32 on the support 22. Insert the rod 33 into the socket 31 on the base 21 and the slot 32 on the support 22. The diameter of the rod 33 usually matches the inner diameter of the socket 31 and the slot 32, so that the rod 33 can be tightly inserted therein. When the rod 33 is fully inserted into the socket 31 and the slot 32, the rod 33 limits the movement of the support 22 on the base 21. The rod 33 forms a mechanical locking structure by cooperating with the socket 31 and the slot 32 to prevent the support 22 from being displaced during the grinding and polishing process.

[0036] In order to make the rod 33 slide into the hole 31 more easily, please refer to Figure 1 In a preferred embodiment, the end of the insertion rod 33 is spherical.

[0037] During use, when locking, the rod 33 is inserted into the socket 31 and slot 32. The spherical end of the rod 33 provides a good guide. The spherical end facilitates alignment with the socket 31 and slot 32 as it approaches them. Even if the socket 31 and slot 32 are slightly misaligned, the spherical end automatically adjusts the direction to a certain extent, allowing the rod 33 to be inserted smoothly.

[0038] In order to make the insertion rod 33 more firmly fixed, please refer to Figure 1 In a preferred embodiment, a spring 34 is provided on the insertion rod 33, one end of the spring 34 is connected to the insertion rod 33, and the other end of the spring 34 is connected to the base 21. The spring 34 is in a stretched state, and the spring 34 causes the insertion rod 33 to have a tendency to slide toward the slot 32.

[0039] During use, the support 22 is placed on the base 21 and the position is adjusted so that the socket 31 corresponds to the slot 32. At this time, the spring 34 is still in a stretched state and continues to apply a pulling force to the rod 33 in the direction of the slot 32. In the process of pushing the rod 33, since the spring 34 is in a stretched state, the pulling force of the spring 34 will assist the rod 33 in sliding in the direction of the slot 32. This makes the insertion operation easier and reduces the force required by the operator. When the rod 33 is fully inserted into the socket 31 and the slot 32, the support 22 is locked. At this time, the spring 34 is still in a stretched state and continues to apply a pulling force to the rod 33 to ensure that the rod 33 will not easily fall out in the locked state.

[0040] To secure the lens, refer to Figure 1In a preferred embodiment, the fixing mechanism 4 includes a first negative pressure hole 41 provided on the support 22, and a second negative pressure hole 42 and a negative pressure pump 43 are provided on the base 21. The outlet of the first negative pressure hole 41 is connected to the inlet of the second negative pressure hole 42, and the outlet of the second negative pressure hole 42 is connected to the inlet of the negative pressure pump 43.

[0041] During use, the lens is placed on the support 22 so that its convex surface fits into the groove 23 or its concave surface fits into the protrusion 24, ensuring that the lens covers the first negative pressure hole 41 on the support 22. When the negative pressure pump 43 is activated, it begins to operate. The rotation of its internal components, such as the impeller, draws air out of the inlet of the negative pressure pump 43, creating a negative pressure at the inlet of the negative pressure pump 43. Because the outlet of the second negative pressure hole 42 is connected to the inlet of the negative pressure pump 43, negative pressure is transferred from the negative pressure pump 43 to the second negative pressure hole 42. Furthermore, because the outlet of the first negative pressure hole 41 is connected to the inlet of the second negative pressure hole 42, negative pressure is further transferred from the second negative pressure hole 42 to the first negative pressure hole 41. Once negative pressure is established in the first negative pressure hole 41, air is drawn out from under the lens, creating a low-pressure area between the lens and the support 22. Under the influence of external atmospheric pressure, the lens is firmly pressed against the support 22, securing the lens.

[0042] To reduce the possibility of debris entering the vacuum pump 43, refer to Figure 2 In a preferred embodiment, a filter screen 44 is provided at the inlet of the second negative pressure hole 42 .

[0043] During use, the polishing process of lenses may produce impurities such as tiny particles and debris. When the airflow carries these impurities through the second negative pressure port 42, the filter 44 blocks them, preventing them from entering the negative pressure pump 43 and the piping system. If impurities enter the negative pressure pump 43, they may damage the pump's internal structure and affect its normal operation. If impurities enter the piping system, they may clog the pipes and reduce the negative pressure effect.

[0044] To clean the filter 44, refer to Figure 2 In a preferred embodiment, a scraper 45 is rotatably connected to the outer side of the filter 44 , and the scraper 45 abuts against the filter 44 . A driving member 5 for driving the scraper 45 to rotate is provided on the filter 44 .

[0045] During use, the scraper 45 is driven to rotate by the driving member 5 to continuously scrape the surface of the filter 44, which can effectively clean the impurities on the filter 44, prevent the filter 44 from being blocked, maintain smooth airflow, and improve the reliability and stability of the fixture fixing mechanism 4 for grinding and polishing the concave and convex surfaces of optical lenses.

[0046] To drive the scraper 45 to rotate, please refer to Figure 2 In a preferred embodiment, the driving member 5 includes an impeller rotatably connected to the inner side of the filter 44 , and the impeller is connected to the scraper 45 .

[0047] During use, when the negative pressure pump 43 is started, air flows from the first negative pressure hole 41 through the second negative pressure hole 42 to the negative pressure pump 43. During this process, the airflow will pass through the inside of the filter 44. Since the impeller is connected to the inside of the filter 44, when the airflow passes through, the kinetic energy of the airflow will drive the impeller to rotate. The blade design of the impeller enables it to rotate under the action of the airflow. The impeller is connected to the scraper 45. When the impeller rotates, it drives the scraper 45 to rotate together. The scraper 45 continuously scrapes the surface of the filter 44 as the impeller rotates. During the entire operation of the negative pressure pump 43, as long as there is airflow passing through, the impeller will continue to rotate, thereby driving the scraper 45 to automatically clean the filter 44. This automatic cleaning method does not require an additional power source, saves energy and improves the reliability of the system.

[0048] In order to better understand this application, the following Figure 1 - Figure 2 The working principle of the technical solution of the fixture for polishing the concave and convex surfaces of an optical lens disclosed herein is described in detail: the convex surface of the lens is placed into the groove 23 of the support 22, with the concave surface aligned with the protrusion 24 to ensure the correct position of the lens. The locking assembly 3 is activated to secure the support 22 to the base 21. The lens is securely fixed to the support 22 using the fixing mechanism 4. The polishing mechanism 1 is activated, and the polishing head 12 begins polishing the concave and convex surfaces of the lens. During the processing, the lens is always maintained in the correct position and posture, ensuring processing accuracy and quality.

[0049] The specific implementation methods of the present application described above do not limit the scope of protection of the present application. Any other corresponding changes and modifications made based on the technical concept of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A fixture for grinding and polishing concave and convex surfaces of optical lenses, characterized in that: include: A grinding mechanism, comprising a bracket and a grinding head, wherein the grinding head is fixed to the bracket; A support mechanism, the support mechanism comprising a base and a support, the support being provided on the base, the base being provided with a locking assembly for locking the support, one side of the support being provided with a groove adapted to the convex surface of the lens, and the other side of the support being provided with a protrusion adapted to the concave surface of the lens; and, The fixing mechanism is arranged on the base and is used to fix the lens on the support.

2. A fixture for grinding and polishing concave and convex surfaces of an optical lens according to claim 1, characterized in that: An elastic layer is provided on both the protrusion and the groove.

3. The fixture for grinding and polishing the concave and convex surfaces of an optical lens according to claim 2, characterized in that: An anti-slip layer is provided on the elastic layer.

4. The fixture for grinding and polishing concave and convex surfaces of an optical lens according to claim 1, characterized in that: The locking assembly includes a socket arranged on the base, a slot corresponding to the socket is arranged on the support, and an insertion rod is inserted into the socket and the slot.

5. The fixture for grinding and polishing the concave and convex surfaces of an optical lens according to claim 4, characterized in that: The end of the insertion rod is spherical.

6. The fixture for grinding and polishing the concave and convex surfaces of an optical lens according to claim 4, characterized in that: A spring is sleeved on the insertion rod, one end of the spring is connected to the insertion rod, and the other end of the spring is connected to the base. The spring is in a stretched state, and the spring causes the insertion rod to slide toward the slot.

7. The fixture for grinding and polishing concave and convex surfaces of an optical lens according to claim 1, characterized in that: The fixing mechanism includes a first negative pressure hole provided on the support, a second negative pressure hole and a negative pressure pump are provided on the base, the outlet of the first negative pressure hole is connected to the inlet of the second negative pressure hole, and the outlet of the second negative pressure hole is connected to the inlet of the negative pressure pump.

8. The fixture for grinding and polishing the concave and convex surfaces of an optical lens according to claim 7, characterized in that: A filter is provided at the inlet of the second negative pressure hole.

9. The fixture for grinding and polishing the concave and convex surfaces of an optical lens according to claim 8, characterized in that: The outer side of the filter is rotatably connected with a scraper, the scraper abuts against the filter, and the filter is provided with a driving member for driving the scraper to rotate.

10. The fixture for grinding and polishing the concave and convex surfaces of an optical lens according to claim 9, characterized in that: The driving member includes an impeller rotatably connected to the inner side of the filter screen, and the impeller is connected to the scraper.

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