A freeform optical lens processing device

Abstract

The application provides a free-form optical lens processing device, which comprises a support table, a bearing disc for fixing an optical lens arranged on the support table, a clamping assembly arranged on the bearing table, a ring body arranged around the bearing disc, a plurality of telescopic rods arranged on the inner circumferential surface of the ring body, and a clamping piece corresponding to each of the telescopic rods arranged at the end of each telescopic rod, the ring body is detachably connected with the bearing table, and the plurality of telescopic rods are uniformly and spacedly arranged around the bearing disc. The lens polished is clamped by the clamping piece and protected by the ring body, the polished surface of the optical lens can be well protected, so that the lens polished can be directly placed in a basket together with the ring body, and the lens polished does not need to be placed in a placing groove of a material box one by one. When the lens is cleaned, the basket and the lens can be directly placed in a cleaning tank for cleaning, and the operation is simple and convenient.

Description

Technical Field

[0001] This invention generally relates to the field of lens processing technology, and specifically to a device for processing freeform optical lenses. Background Technology

[0002] In the production of optical lenses, processes such as grinding and polishing are required to obtain optical lenses with smooth surfaces. Currently, the most commonly used processing method for polishing optical lenses is airbag polishing. Because airbag polishing has advantages such as high polishing efficiency, high adaptability to curved surfaces, adjustable polishing pressure, and low cost, it is widely used in the polishing process of free-surface optical lenses.

[0003] Since polishing paste and other polishing media are used in the polishing process of optical lenses, the lenses need to be cleaned after polishing. For mass-produced optical lenses, in order to avoid damage to the lens surface due to collisions between lenses, the current method is to use a material box. The material box is divided into multiple placement slots for placing lenses. After the lenses are polished, they need to be placed one by one into the placement slots of the material box, and then the material box and lenses are transported together to the cleaning equipment. Then the lenses are taken out one by one and placed in the cleaning equipment for cleaning. The operation is not convenient. Summary of the Invention

[0004] In view of the above problems, this application provides a freeform surface optical lens processing apparatus to solve the technical problems existing in the prior art.

[0005] This invention provides a processing apparatus for freeform optical lenses, comprising:

[0006] A support platform, wherein a carrier plate for fixing optical lenses is provided on the support platform;

[0007] The clamping assembly, disposed on the support platform, includes a ring body surrounding the bearing plate, a plurality of telescopic rods disposed on the inner circumferential surface of the ring body, and clamping members disposed one-to-one at the ends of the plurality of telescopic rods. The ring body is detachably connected to the support platform, and the plurality of telescopic rods are evenly spaced around the bearing plate.

[0008] Specifically, in use, the optical lens to be polished is fixed by a carrier plate, and a clamping assembly is set on a support platform. The telescopic rod of the clamping assembly is in a retracted state, and the clamping component does not clamp the lens to be polished. Then, the polishing equipment polishes the optical lens fixed on the carrier plate. After polishing, the telescopic rod of the clamping assembly extends, and the clamping component clamps the polished optical lens. Then, the ring body is removed from the support platform along with the optical lens and placed in a material frame for holding the polished lens. Then, a new clamping assembly is placed on the support platform, and a new optical lens is installed, and the above process is repeated to polish the lens. The ring body of this application is made of a material with a lower hardness than optical lenses, such as plastic. After the polished lens is clamped by the clamping component, the ring body protects the lens, which can effectively protect the polished surface of the optical lens. Thus, the polished lens and the ring body can be placed directly in the material frame, without having to place the polished lenses one by one in the placement slot of the material box. Furthermore, when cleaning the lens, the material frame and the lens can be placed directly in the cleaning tank for cleaning, making the operation simple and convenient.

[0009] Furthermore, the ring body includes an upper ring body and a lower ring body. An annular groove is provided on the lower bottom surface of the upper ring body. The lower ring body is guided and disposed in the annular groove. A driving assembly is provided between the lower ring body and the upper ring body. The driving assembly is used to drive the lower ring body to move in the annular groove. The lower ring body is connected to the support platform. The telescopic rod is disposed on the upper ring body.

[0010] Specifically, by setting the ring body to include an upper ring body and a lower ring body, and setting a driving component between the upper and lower ring bodies, the lower ring body can be retracted into the annular groove during the polishing of the optical lens, so that the upper end surface of the upper ring body is lower than the upper surface of the optical lens to be polished, thereby avoiding the ring body from hindering the polishing work and ensuring that the polishing work can be carried out normally.

[0011] Furthermore, the driving assembly includes a first permanent magnet disposed at the bottom of the annular groove and a first electromagnet disposed at the upper end of the lower ring body. Two terminals electrically connected to the first electromagnet are disposed on the bottom surface of the lower ring body, and two plug-in sockets that are plugged into and cooperate with the two terminals are disposed on the support platform.

[0012] Furthermore, the support plate is vertically and flexibly mounted on the support platform.

[0013] Specifically, since optical lenses of different batches and specifications have different thicknesses, by setting the carrier plate to be height-adjustable, the height of the carrier plate can be adjusted according to the different thicknesses of optical lenses, thereby ensuring that the upper surface of the optical lens to be polished is higher than the upper end surface of the ring, ensuring the normal progress of the polishing work.

[0014] Furthermore, a positioning boss is provided on the support platform, and a positioning groove is provided on the lower surface of the lower ring body to position and cooperate with the positioning boss. The plug seat is provided on the positioning boss.

[0015] Specifically, by setting a positioning boss on the support platform and a matching positioning groove on the lower ring body, the ring body is positioned by the positioning boss and positioning groove, which facilitates the installation and positioning of the ring body.

[0016] Furthermore, the clamping member includes a connecting portion disposed at the end of the telescopic rod and a clamping airbag disposed on the side of the connecting portion away from the telescopic rod.

[0017] Specifically, by configuring the clamping component to include a connecting part and a clamping airbag, the clamping airbag can deform under the action of clamping force when clamping the side of the optical lens, thereby wrapping the optical lens around the clamping airbag, thus achieving a better clamping and protection effect. Furthermore, after deformation, the clamping airbag will also wrap the upper and lower surfaces of the optical lens, thereby better protecting the polished mirror surface of the optical lens.

[0018] Furthermore, an annular piston is provided in the annular groove, and a limiting end cap that cooperates with the annular piston is provided at the opening of the annular groove. The lower ring body is connected to the annular piston, and the side of the lower ring body is slidably sealed with the limiting end cap. A first vent is provided on the limiting end cap, which communicates with the interior of the annular groove. The other end of the first vent is connected to the clamping airbag.

[0019] Furthermore, a second vent passage is provided through the annular piston, and a second one-way valve is provided on the second vent passage to allow gas to flow unidirectionally to the side near the limiting end cap. A third vent passage communicating with the outside is provided at the bottom of the annular groove, and a third one-way valve is provided on the third vent passage to allow the flowing medium to flow unidirectionally into the annular groove.

[0020] Specifically, with this configuration, when the annular piston moves towards the bottom of the annular groove, the airflow above the annular groove can enter the lower part of the annular groove through the second vent. When the annular piston moves away from the bottom of the annular groove, the second one-way valve closes, which can compress the airflow below the annular piston into the clamping airbag. Furthermore, when the annular piston moves away from the bottom of the annular groove, external gas can be drawn in from the third vent to supplement the annular groove, thereby generating a pumping effect. As the annular piston moves within the annular groove, airflow is continuously pumped into the clamping airbag.

[0021] Furthermore, the upper ring body is provided with a plurality of guide channels along the radial direction, and a sliding member is slidably arranged in the guide channel. The telescopic rod includes a first rod that is slidably arranged at the end of the guide channel. The first rod is connected to the sliding member. A second electromagnet is provided at the end of the guide channel away from the telescopic rod, and a second permanent magnet is provided on the sliding member.

[0022] Furthermore, an annular magnet is provided at one end of the guide channel near the telescopic rod, and a return spring is provided between the sliding member and the end of the guide channel near the telescopic rod.

[0023] Beneficial effects

[0024] This invention provides a freeform surface optical lens processing device, comprising: a support platform with a carrier plate for fixing the optical lens; and a clamping assembly disposed on the support platform, including a ring body surrounding the carrier plate, a plurality of telescopic rods disposed on the inner circumferential surface of the ring body, and clamping members corresponding to the ends of the telescopic rods. The ring body is detachably connected to the support platform, and the plurality of telescopic rods are evenly spaced around the carrier plate. After the polished lens is clamped by the clamping assembly, the lens is protected by the ring body, which can effectively protect the polished surface of the optical lens. Thus, the polished lens and the ring body can be directly placed in the material basket together, eliminating the need to place the polished lenses one by one in the placement slot of the material box. Furthermore, when cleaning the lens, the material basket and the lens can be directly placed in the cleaning tank for cleaning, making the operation simple and convenient. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of a freeform surface optical lens processing device provided by the present invention.

[0027] Figure 2 This is a schematic diagram of the support platform in a freeform surface optical lens processing device provided by the present invention.

[0028] Figure 3 This is a partially enlarged structural diagram of the clamping component in a freeform surface optical lens processing device provided by the present invention.

[0029] Figure 4 for Figure 3 The diagram shown is a partially enlarged structural schematic of point A in a freeform surface optical lens processing device provided by the present invention.

[0030] Figure 5This is a schematic diagram of the connection structure of the telescopic rod, sliding member, and clamping member in a freeform surface optical lens processing device provided by the present invention.

[0031] Figure 6 This is a top view of the ring structure in a freeform surface optical lens processing device provided by the present invention.

[0032] Figure 7 for Figure 4 The diagram shown is a partially enlarged structural schematic of point A-1 in a freeform surface optical lens processing device provided by the present invention.

[0033] Figure 8 for Figure 4 The diagram shown is a partially enlarged structural schematic of point A-2 in a freeform surface optical lens processing device provided by the present invention.

[0034] Figure 9 for Figure 4 The diagram shown is a partially enlarged structural schematic of point A-3 in a freeform surface optical lens processing device provided by the present invention.

[0035] Figure 10 This is a schematic diagram of the power supply module in a freeform surface optical lens processing device provided by the present invention. Detailed Implementation

[0036] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] This invention provides a freeform surface optical lens processing apparatus, as a specific embodiment, with reference to... Figures 1-6 It includes:

[0040] Support platform 1, on which a carrier plate 10 for fixing optical lenses is provided;

[0041] The clamping assembly 2 is disposed on the support platform 1 and includes a ring body 21 surrounding the bearing plate 10, a plurality of telescopic rods 20 disposed on the inner circumferential surface of the ring body 21, and clamping members 22 corresponding to the ends of the plurality of telescopic rods 20. The ring body 21 is detachably connected to the support platform 1, and the plurality of telescopic rods 20 are evenly spaced around the bearing plate 10.

[0042] For details, please refer to Figure 1 It should be noted that the lens polishing device used in this application includes a support platform 1, with an airbag polishing disc 11 mounted above the support platform 1. The specific working method and principle of the airbag polishing disc are based on existing technology and will not be elaborated here. In use, the optical lens 9 to be polished is fixed by the carrier disc 10, which uses negative pressure adsorption to fix the optical lens 9. A clamping assembly 2 is mounted on the support platform 1, and the telescopic rod 20 of the clamping assembly 2 is in a retracted state, with the clamping member 22 not clamping the lens to be polished. Then, the polishing equipment polishes the optical lens fixed on the carrier disc. After polishing, the telescopic rod of the clamping assembly extends, and the clamping member 22 clamps the polished optical lens. The ring 21 is removed from the support table 1 along with the optical lens and placed in the material frame for holding the polished lens. Then, a new clamping assembly is placed on the support table 1, and a new optical lens is installed. The above process is repeated to polish the lens. The ring 21 of this application is made of a material with a lower hardness than the optical lens, such as plastic. After the polished lens is clamped by the clamping member 22, the lens is protected by the ring, which can effectively protect the polished surface of the optical lens. Thus, the polished lens and the ring 21 can be placed directly in the material frame together, without having to place the polished lenses one by one in the placement slot of the material box. Furthermore, when cleaning the lens, the material frame and the lens can be placed directly in the cleaning tank for cleaning, making the operation simple and convenient.

[0043] Furthermore, as a specific implementation method, refer to Figures 2-4 The ring body 21 includes an upper ring body 210 and a lower ring body 211. An annular groove 212 is provided on the lower bottom surface of the upper ring body 210. The lower ring body 211 is guided and disposed in the annular groove 212. A driving assembly 23 is provided between the lower ring body and the upper ring body. The driving assembly 23 is used to drive the lower ring body 211 to move in the annular groove 212. The lower ring body 211 is connected to the support platform 1. The telescopic rod 20 is disposed on the upper ring body 210.

[0044] Specifically, both the upper and lower ring bodies in this application are made of plastic. The clamping assembly of this application is mainly used for processing optical lenses made of glass. The hardness of plastic is lower than that of glass, so the ring body will not damage the polished surface of the optical lens when it comes into contact with the optical lens, thus effectively protecting the optical lens. By setting the ring body 21 to include an upper ring body and a lower ring body, and setting the driving assembly 23 between the upper and lower ring bodies, the lower ring body 211 can be contracted into the annular groove 212 during the polishing of the optical lens, so that the upper end surface of the upper ring body is lower than the upper surface of the optical lens to be polished, thereby avoiding the ring body from hindering the polishing work and ensuring that the polishing work can be carried out normally. The specific structure and working principle of the driving assembly 23 are described below.

[0045] Furthermore, as a specific implementation method, refer to Figure 3 , Figure 4 , Figure 7 The specific structure of the driving component is as follows: The driving component 23 includes a first permanent magnet 231 disposed at the bottom of the annular groove 212 and a first electromagnet 232 disposed at the upper end of the lower ring body 211. Two terminals 233 electrically connected to the first electromagnet 232 are disposed on the bottom surface of the lower ring body. Two plug-in sockets that are plugged into the two terminals 233 are disposed on the support platform 1 and connected to the power supply module 7. Plug-in sockets that are plugged into the terminals are disposed on the support platform 1. When the ring body is disposed on the support platform, the terminals can be plugged into the plug-in sockets.

[0046] Specifically, when the first electromagnet is energized and generates magnetic attraction with the first permanent magnet, it can magnetically attract the lower ring body to move towards the bottom of the annular groove 212, causing the lower ring body to retract into the annular groove. When the first electromagnet generates a magnetic force that repels the first permanent magnet, it can drive the lower ring body to extend.

[0047] Furthermore, as a preferred embodiment, refer to Figure 2 The support plate 10 is vertically and flexibly mounted on the support platform 1.

[0048] Specifically, since optical lenses of different batches and specifications have different thicknesses, by setting the carrier plate to be height-adjustable, the height of the carrier plate can be adjusted according to the optical lenses of different thicknesses, thereby ensuring that the upper surface of the optical lens to be polished is higher than the upper end surface of the ring body, and ensuring the normal progress of the polishing work. As a specific implementation method, an electric telescopic rod 31 is provided on the carrier body, and the carrier plate 10 is fixed to the end of the electric telescopic rod, thereby controlling the height of the carrier plate 10.

[0049] Furthermore, as a specific implementation method, refer to Figures 2-6The support platform 1 is provided with a positioning boss 13, and the lower surface of the lower ring body 211 is provided with a positioning groove 211a that is positioned and engaged with the positioning boss 13. The plug-in seat is provided on the positioning boss 13.

[0050] Specifically, by setting a positioning boss on the support platform and a matching positioning groove on the lower ring body, the ring body is positioned by the positioning boss and positioning groove, which facilitates the installation and positioning of the ring body.

[0051] Furthermore, as a specific implementation method, refer to Figures 2-6 The clamping member 22 includes a connecting part 220 disposed at the end of the telescopic rod 20 and a clamping airbag 221 disposed on the side of the connecting part 220 away from the telescopic rod.

[0052] Specifically, by configuring the clamping member to include a connecting part and a clamping airbag 221, the clamping airbag can deform under the action of clamping force when clamping the side of the optical lens, thereby wrapping the optical lens around the clamping airbag, thus achieving a better clamping and protection effect. Furthermore, after deformation, the clamping airbag will also wrap the upper and lower surfaces of the optical lens, thereby better protecting the polished mirror surface of the optical lens.

[0053] Furthermore, as a preferred embodiment, an annular piston 2110 is provided in the annular groove 212, and a limiting end cap 2120 is provided at the opening of the annular groove 212 to limit and cooperate with the annular piston 2110. The lower ring body 211 is connected to the annular piston 2110, and the side of the lower ring body 211 is slidably sealed with the limiting end cap. A first vent 2121 communicating with the interior of the annular groove 212 is provided on the limiting end cap, and the other end of the first vent 2121 is communicating with the clamping airbag 221.

[0054] Specifically, with this setup, when the polishing device polishes the lens, the lower ring body is in a contracted state within the annular groove. After the lens is polished, the electric telescopic rod 31 is first shortened to lower the height of the support plate 10, positioning the optical lens in a position where it can be held by the clamping airbag. Then, the telescopic rod 20 is extended to allow the clamping airbag to hold the optical lens. The support plate 10 then releases the optical lens, and the drive assembly 23 drives the upper ring body upward, causing the annular piston 2110 to move away from the bottom of the annular groove 212. During this process, the annular piston 2110 can squeeze the gas located below the annular piston in the annular groove out of the first connecting air passage 2121, thereby delivering it to the clamping airbag 221, causing the clamping airbag to inflate. After the clamping airbag inflates, it can better wrap the optical lens when clamping it, achieving a better protective effect.

[0055] Furthermore, as a specific implementation method, refer to Figure 7 The annular piston 2110 is also provided with a second vent 2112, and the second vent 2112 is provided with a second one-way valve 2113 that allows gas to flow unidirectionally to the side near the limiting end cap. The bottom of the annular groove 212 is provided with a third vent 2120 that connects to the outside, and the third vent 2120 is provided with a third one-way valve 2122 that allows the flowing medium to flow unidirectionally into the annular groove 212.

[0056] For details, please refer to Figure 9 The third one-way valve includes an elastic arm disposed on one side of the third vent 2120 and a first valve member disposed on the first elastic arm. Under the elastic force of the first elastic arm, the first valve member can block the third vent 2120. When the airflow flows unidirectionally from the third vent into the annular groove 212, the first elastic arm can undergo elastic deformation, causing the first valve member to open the third vent. Further, refer to... Figure 7 The second one-way valve 2113 also includes a second elastic arm 21131 and a second valve element 21132 disposed on the second elastic arm. Its working principle is the same as that of the third one-way valve, which will not be described in detail here. With this arrangement, when the annular piston moves toward the bottom of the annular groove 212, the airflow above the annular groove 212 can enter the lower part of the annular groove through the second air passage 2112. When the annular piston moves away from the bottom of the annular groove, the second one-way valve closes, which can squeeze the airflow below the annular piston into the clamping airbag. When the annular piston moves away from the bottom of the annular groove, it can draw external gas from the third air passage 2120 to supplement the annular groove, thereby generating a pumping effect. When the annular piston moves in the annular groove, it continuously pumps airflow into the clamping airbag.

[0057] Furthermore, as a specific implementation method, refer to Figure 4 , Figure 5The telescopic rod 20 operates as follows: Multiple guide channels 200 are radially arranged within the upper ring 210. A sliding member 201 is slidably arranged within each guide channel 200. The telescopic rod 20 includes a first rod 20a guided at the end of the guide channel, connected to the sliding member 201. A second electromagnet 2020 is located at the end of the guide channel 200 away from the telescopic rod. A second permanent magnet 203 is mounted on the sliding member 201. Specifically, the second electromagnet can also have a second insertion post (not shown in the figure) positioned in the positioning groove 211a on the bottom surface of the lower ring 211, and a second insertion seat (not shown in the figure) adapted to be mounted on the support platform 1, thereby providing power to the second electromagnet. Both the second insertion seat and the insertion seat are electrically connected to the power supply module 7.

[0058] Furthermore, an annular magnet 204 is provided at one end of the guide channel 200 near the telescopic rod, and a return spring 205 is provided between the sliding member 201 and the end of the guide channel near the telescopic rod.

[0059] For details, please refer to Figures 4-6It should be noted that currently, existing technologies for cleaning glass optical lenses after polishing mostly employ cleaning solutions. Typically, the cleaning solution is placed in a cleaning tank equipped with a heating device and / or an ultrasonic generator. During cleaning, the cleaning solution is heated to a suitable temperature, generally 80-90 degrees Celsius, and the ultrasonic generator is used in conjunction to ensure effective cleaning of the optical lenses. The telescopic rod of this application extends and retracts as follows: under normal conditions, the second electromagnet 2020 is not energized, and at this time, under the elastic force of the return spring 205... The sliding member 201 abuts against the second electromagnet 2020, causing the first rod 20a to be in a retracted state. When the retracted rod extends, by controlling the operation of the second electromagnet 2020, a magnetic force repelling the second permanent magnet 203 is generated. The second permanent magnet is fixedly mounted on the sliding member 201, thereby driving the sliding member to extend the first rod 20a. After extension, it pushes the clamping airbag to move and clamp the optical lens. After contacting the optical lens, the clamping airbag deforms until the second permanent magnet contacts the magnetic steel member 204. The magnetic steel member 204 has no magnetism when it is not in contact with the second permanent magnet. After the steel component 204 comes into contact with the second permanent magnet 203, it is magnetized and becomes magnetic, thus attracting the second permanent magnet and fixing the sliding component 201. The Curie temperature of the steel component 204 is 75-78 degrees Celsius. Then, the second electromagnet is de-energized, and the magnetism disappears. However, due to the attraction between the second permanent magnet and the steel component, the sliding component remains in contact with the steel component, thus maintaining the clamping state of the optical lens. When cleaning the optical lens, the ring and the optical lens are placed together in the cleaning tank. During setup, various grooves are set inside the ring and... Made of plastic, it has a low density. Inside the cleaning tank, it floats on the surface of the cleaning liquid along with the optical lens. When the cleaning liquid is heated to the cleaning temperature (80-90 degrees Celsius), the magnet 204 loses its magnetism when it reaches the Curie temperature. As a result, the sliding part and the magnet separate. Under the elastic force of the return spring 205, the sliding part returns to the position in contact with the second electromagnet, thereby driving the first rod to move and release the optical lens. Since the density of the glass optical lens is greater than that of the cleaning liquid, the optical lens sinks and the ring floats, making it easy to retrieve the ring for reuse.

[0060] Furthermore, as a preferred embodiment, refer to Figure 4 A cylindrical heat conductor 206 is provided at the end of the guide channel 200. The first rod guide is provided inside the heat conductor. The magnetic steel part 204 is thermally coupled and fixedly connected to the heat conductor 206. Specifically, the cylindrical heat conductor 206 can be made of materials with good thermal conductivity such as copper or steel, which is more conducive to heat transfer and allows the magnetic steel part 204 to better sense the external temperature.

[0061] Furthermore, as a preferred embodiment, refer to Figure 4 , Figure 5 , Figure 7 A insertion cavity 20a-2 is provided at the end of the first rod 20a. A piston plate 20b-1 is movably disposed in the insertion cavity. The piston plate 20b-1 is connected to the second rod 20b. A second limiting end plate 20a-3 is provided at the port of the insertion cavity to limit the piston plate. A buffer spring 20c is provided between the piston plate and the bottom of the insertion cavity. The axis of the insertion cavity 20a-2 is parallel to the axis of the first rod. The second rod and the second limiting end plate are in a non-rotational fit (the non-rotational fit includes: a strip keyway is provided axially on the outer circumference of the second rod, and a key is provided on the second limiting end to fit the strip keyway). A clamping airbag 221 is provided at the end of the second rod. With this arrangement, the buffer spring 20c can provide clamping force when clamping the optical lens, and the buffer spring can provide buffer rebound force, thereby accommodating optical lenses of more sizes.

[0062] Furthermore, as a preferred embodiment, refer to Figure 4 , Figure 5 A third one-way valve 2122 is provided on the air passage connecting the clamping airbag 221 and the first connecting airway 2121. The third one-way valve 2122 allows airflow to flow unidirectionally into the clamping airbag 221. A first airway 20b-2 connecting the insertion cavity and the inside of the clamping airbag is provided on the second rod. A second airway 20a-1 coaxially connected to the insertion cavity is provided inside the first rod. A third airway 2120 corresponding to the second airway is provided on the second electromagnet 2020. (Reference) Figure 8 A blind groove 20a-11 is provided at the end of the second air passage 20a-1, and a valve plate 20a-12 is provided at the end of the blind groove. A valve passage is provided on the valve plate, and a ball valve 20a-13 adapted to the valve passage is provided in the blind groove. A retaining spring 20a-14 is provided between the ball valve and the bottom of the blind groove. Under the elastic force of the retaining spring, the ball valve 20a-13 blocks the valve passage, thereby keeping the end of the second air passage in a closed state. (Continue to refer to...) Figure 8At the end of the third air passage 2120, a trigger post 2021 adapted to the valve passage is provided. When the sliding member 201 abuts against the second electromagnet 202, the trigger post 2021 can squeeze the spherical valve member 20a-13 away from the valve passage, thereby opening the valve passage and thus opening the second air passage. With this setting, after the optical lens is polished, the electric telescopic rod 31 is first shortened, causing the carrier plate 10 to descend, thereby causing the optical lens 9 to descend and correspond to the clamping airbag. Then, the second electromagnet 2020 is energized, causing the telescopic rod to extend and the clamping airbag to clamp the optical lens. At this time, the sliding member 201 leaves the second electromagnet, and the spherical valve member 20a-13 blocks the valve passage. Then, the carrier plate (generally a suction cup type carrier plate, which fixes the optical lens by negative pressure) 10 is controlled to release the optical lens, and the first electromagnet 232 is energized to generate a magnetic force that repels the first permanent magnet, thereby pushing the upper ring body 210 upward and driving the ring liveness control. The plug 2110 moves away from the permanent magnet, squeezing the gas inside the annular groove into the clamping airbag 221, causing the clamping airbag to expand and wrap around and protect the optical lens. Due to the setting of the third one-way valve 2122 and the ball valve 20a-13 blocking the valve channel, the gas flows into the clamping airbag and remains inside the clamping airbag. Then, the second electromagnet and the first electromagnet are de-energized, and the ring and the optical lens are removed together and placed in the material frame. After a batch of optical lenses is polished, the optical lenses in the material frame are placed in the cleaning tank. The magnet 204 is heated and demagnetized, causing the retraction rod 20 to retract and release the optical lens. Under the elastic force of the return spring 205, the sliding part 201 abuts against the second electromagnet 2020. At this time, the trigger post 2021 can squeeze the ball valve 20a-13 away from the valve channel, opening the valve channel and thus opening the second air channel. The gas in the clamping airbag is released, and then the ring is recovered and the optical lens is cleaned.

[0063] Specifically, the control device 4 is connected to the polishing device, and can obtain whether the carrier plate 10 in the polishing device is adsorbed and fixed to the optical lens, and can obtain the extension length of the electric telescopic rod 31 to obtain the height of the carrier plate 10, and control the power supply module 7 to supply power to the first electromagnet and the second electromagnet in sequence.

[0064] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A processing apparatus for freeform surface optical lenses, characterized in that, include: Support platform (1), on which a carrier plate (10) for fixing optical lenses is provided. The clamping assembly (2) is disposed on the support platform (1) and includes a ring body (21) surrounding the bearing plate (10), a plurality of telescopic rods (20) disposed on the inner circumferential surface of the ring body (21), and clamping members (22) disposed one-to-one at the ends of the plurality of telescopic rods (20). The ring body (21) is detachably connected to the support platform (1), and the plurality of telescopic rods (20) are evenly spaced around the bearing plate (10). The ring body (21) includes an upper ring body (210) and a lower ring body (211). An annular groove (212) is provided on the bottom surface of the upper ring body (210). The lower ring body (211) is guided and disposed in the annular groove (212). A driving assembly (23) is provided between the lower ring body and the upper ring body. The driving assembly (23) is used to drive the lower ring body (211) to move in the annular groove (212). The lower ring body (211) is connected to the support platform (1). The telescopic rod (20) is disposed on the upper ring body (210). The drive assembly (23) includes a first permanent magnet (231) disposed at the bottom of the annular groove (212) and a first electromagnet (232) disposed at the upper end of the lower ring body (211). Two terminals (233) electrically connected to the first electromagnet (232) are disposed on the bottom surface of the lower ring body. Two plug-in sockets (234) are disposed on the support platform (1) to be plugged into the two terminals (233). The clamping member (22) includes a connecting part (220) disposed at the end of the telescopic rod (20) and a clamping airbag (221) disposed on the side of the connecting part (220) away from the telescopic rod; an annular piston (2110) is disposed in the annular groove (212), and a limiting end cap that limits and cooperates with the annular piston (2110) is disposed at the opening of the annular groove (212); the lower ring body (211) is connected to the annular piston (2110). The side of the lower ring (211) is slidably sealed with the limiting end cap. The limiting end cap is provided with a first vent passage communicating with the interior of the annular groove (212). The other end of the first vent passage is connected to the clamping airbag (221). The annular piston (2110) is also provided with a second vent passage (2112). The second vent passage (2112) is provided with a second one-way valve (2113) that allows gas to flow unidirectionally to the side closer to the limiting end cap. The bottom of the annular groove (212) is provided with a third vent passage connecting to the outside. The third vent passage is provided with a third one-way valve that allows the flowing medium to flow into the annular groove (212) in one direction. Multiple guide channels (200) are provided radially inside the upper ring body (210). A sliding member (201) is slidably provided in the guide channel (200). The telescopic rod (20) includes a first rod (20a) which is slidably provided at the end of the guide channel. The first rod (20a) is connected to the sliding member (201). A second electromagnet (202) is provided at the end of the guide channel (200) away from the telescopic rod. A second permanent magnet (203) is provided on the sliding member (201). An annular magnet (204) is also provided at the end of the guide channel (200) near the telescopic rod. A return spring (205) is also provided between the sliding member (201) and the end of the guide channel near the telescopic rod.

2. The freeform surface optical lens processing apparatus according to claim 1, characterized in that, The carrier plate (10) is mounted on the support platform (1) in a height-adjustable manner.

3. The freeform surface optical lens processing apparatus according to claim 2, characterized in that, The support platform (1) is provided with a positioning boss (13), and the lower surface of the lower ring body (211) is provided with a positioning groove (211a) that is positioned and cooperates with the positioning boss (13). The plug-in seat (234) is provided on the positioning boss (13).

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