A clamping mechanism for optical lens processing

Abstract

The application relates to the technical field of optical lens processing, in particular to a clamping mechanism for optical lens processing, which comprises an umbrella frame and a plurality of circumferentially uniformly arranged umbrella sheets, the umbrella frame comprises an umbrella frame inner ring and a main support, a driving unit is connected between the plurality of umbrella sheets and the umbrella frame inner ring, the umbrella sheets are connected through a connecting group and the main support, a fastening unit is installed on the umbrella sheets, the driving unit is used for driving the umbrella sheets to overturn by 180 degrees and to lift the umbrella sheets upwards to approach one end of the umbrella frame inner ring; the optical lens can be fixed in the mounting hole in a rigid resistance mode when the umbrella sheet is overturned, so that shaking or deviation of the optical lens during overturning is prevented, and the uniformity of coating of the optical lens is ensured; in addition, the main support and the rotary workbench can be automatically centrally positioned, so that the rotation center of the main support and the central axis of the main support coincide, thereby increasing the stability during coating of the optical lens.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical lens processing, in particular to a clamping mechanism for optical lens processing. BACKGROUND

[0002] As the core component of the precision optical system, the optical lens is widely used in the fields of photography, medical treatment and scientific research instruments, etc., and its imaging precision, light transmission performance and environmental adaptability directly determine the use effect of the terminal equipment. In the manufacturing process of the optical lens, the coating process is a key process for guaranteeing the optical performance. The thin film of a specific material such as silicon dioxide is deposited on the surface of the lens to adjust the light transmittance, reflectivity, wear resistance and other performances of the lens.

[0003] At present, an umbrella type clamp structure is often used to clamp the optical lens during the coating of the optical lens. The clamp includes a ring-shaped main umbrella frame and a plurality of umbrella blades uniformly distributed in the circumferential direction. An inner hole with a size adapted to the lens to be processed is formed on each umbrella blade. During operation, the operator needs to first fit the pressing ring of the optical lens on the outside of the lens to be coated, and then place the optical lens with the fitted pressing ring one by one in the inner hole of the umbrella blade. Then, the whole umbrella frame is installed on the rotating workbench of the coating machine. During the coating process, the workbench drives the umbrella frame to rotate at a constant speed to ensure uniform coating of the surface of the optical lens. At the same time, the umbrella blade has a turnover function. After one side is coated, it can be turned over by 180 degrees through the driving mechanism to make the other side of the optical lens face the coating source, so as to realize continuous coating of both sides of the optical lens.

[0004] The existing umbrella type clamp has the following problems during the coating process of the optical lens. During the turnover process of the umbrella blade, the optical lens is only fixed by the cooperation of the pressing ring and the inner hole of the umbrella blade, which makes the optical lens prone to shaking and deviation during the turnover process due to factors such as turnover inertia force, thereby affecting the uniformity of the coating of the optical lens. In addition, when the umbrella frame is installed on the rotating workbench of the coating machine, the central axis of the umbrella frame is prone to deviation from the central axis of the rotating workbench, which makes the central axis of the umbrella frame and the rotation center not collinear, thereby causing the umbrella frame to be prone to eccentric shaking during rotation, thereby reducing the stability of the coating of the optical lens. SUMMARY

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme. A clamping mechanism for optical lens processing includes an umbrella frame and a plurality of umbrella blades arranged uniformly in the circumferential direction. The umbrella frame includes an umbrella frame inner ring and a main support. A driving unit is connected between the plurality of umbrella blades and the umbrella frame inner ring. The umbrella blades are connected to the main support through a connecting group. A fastening unit is installed on the umbrella blades. The driving unit is used to drive the umbrella blades to turn over and lift upward.

[0006] A positioning group for automatically centering the main support with the rotating workbench of the coating machine is installed at the lower end of the main support.

[0007] A plurality of mounting holes are formed on the umbrella blade, and a clamping block and a positioning block are radially and elastically slidably installed on the inner wall of the mounting hole from top to bottom. The end of the clamping block close to the middle of the mounting hole is in trapezoidal structure, and the clamping block and the positioning block cooperate to achieve quick elastic clamping.

[0008] The fastening unit comprises a pushing group installed on the umbrella blade, and a fastening block corresponding to the mounting hole is installed on the pushing group, and the fastening block and the umbrella blade are in sliding connection.

[0009] Two circumferentially arranged pushing blocks are further installed on the pushing group, and an arc-shaped plate corresponding to the pushing block is installed on the main support. An inclined surface corresponding to the pushing block is formed on the lower end of the arc-shaped plate. When the umbrella blade is turned over, the arc-shaped plate and the pushing block cooperate to make the pushing group drive the fastening block to abut against the optical lens. Through the combination of self-adaptive, staged elastic clamping and dynamic locking, stable clamping of the lens during the turning over coating process is realized.

[0010] Preferably, the driving unit comprises a hydraulic cylinder installed in the inner circle of the umbrella stand, and an installation cylinder is fixedly installed on the upper end of the hydraulic cylinder. A rotating shaft one is fixedly installed on one end of the umbrella blade close to the inner circle of the umbrella stand. A transmission shaft with a telescopic structure is hinged to one end of the rotating shaft one close to the inner circle of the umbrella stand. A rotating part is connected between the transmission shaft and the installation cylinder.

[0011] Preferably, the connecting group comprises a rotating shaft two fixedly installed on one end of the umbrella blade away from the inner circle of the umbrella stand. A connecting shaft is hinged to one end of the rotating shaft two away from the umbrella blade. The connecting shaft and a connecting plate fixedly installed on the main support are in rotating connection.

[0012] Preferably, the pushing group comprises a plurality of arc-shaped transmission plates arranged along the radial direction and slidably installed on the umbrella blade. One end of the arc-shaped transmission plate close to the middle of the inner circle of the umbrella stand is fixedly connected with the corresponding fastening block. A synchronous rod is fixedly installed between the plurality of arc-shaped transmission plates.

[0013] Preferably, one end of the synchronous rod away from the inner circle of the umbrella stand slidably extends into the rotating shaft two. A pushing plate is fixedly installed on the outer side of the synchronous rod through a connecting block. The connecting block is slidably connected with the rotating shaft two through a connecting spring. The pushing block is fixedly installed on one end of the pushing plate away from the inner circle of the umbrella stand.

[0014] Preferably, the positioning group comprises a positioning ring fixedly installed on the lower end of the main support. A plurality of mounting grooves are uniformly arranged on the positioning ring. An L-shaped locking rod is rotatably installed in the mounting groove through a torsion spring shaft. The torsion spring shaft is located in the middle of the horizontal section of the locking rod.

[0015] Preferably, a positioning plate is radially slidably arranged inside the positioning ring and above the locking rods, the positioning plate is connected with the abutting spring and the mounting groove, triangular locking blocks are fixedly arranged on the opposite sides of the lower ends of the plurality of positioning plates, the vertical sections of the locking rods are used for cooperating with the locking blocks to lock the position of the positioning plate, and inclined grooves matched with the locking blocks are formed in the opposite sides of the locking rods.

[0016] Preferably, unlocking blocks are arranged on the opposite sides of the lower ends of the plurality of locking rods, the unlocking blocks are slidably connected with the sliding blocks and the mounting grooves, cooperating rods are radially slidably arranged inside the positioning ring and below the locking rods, inclined surfaces are formed in the upper ends of the opposite sides of the plurality of cooperating rods, and the inclined surfaces of the upper ends of the cooperating rods are in contact with the lower ends of the corresponding unlocking blocks.

[0017] Preferably, an inclined surface is formed in the side of the upper end of the positioning block close to the middle of the mounting hole, and a pushing block is fixedly arranged on the lower end of the positioning block.

[0018] The present application has the following advantages: 1. The present application can fix the optical lens in the mounting hole by rigidly abutting when the umbrella-shaped plate is turned over, thereby preventing the optical lens from shaking or deviating when being turned over, and ensuring the uniformity of coating the optical lens. In addition, the present application can automatically center the main support and the rotating workbench, so that the rotation center of the main support coincides with its own central axis, thereby increasing the stability during coating the optical lens.

[0019] 2. The arc-shaped plate of the present application can push the pushing block to move when the umbrella-shaped plate is turned over, so that the pushing block drives the plurality of fastening blocks corresponding to the same umbrella-shaped plate to rigidly abut on the pressing ring through the pushing group, and synchronously stably fix the plurality of optical lenses on the umbrella-shaped plate in the mounting hole, so that the optical lenses are stably turned over.

[0020] 3. The clamping block of the present application can cooperate with the positioning block to quickly clamp the optical lens into the mounting hole, and the fastening block does not interfere with the clamping of the optical lens during clamping the optical lens, thereby ensuring the coating processing efficiency of the optical lens.

[0021] 4. The positioning group of the present application can automatically position the main support and the rotating workbench when the main support is placed on the rotating workbench, so that the central axis of the main support is collinear with the central axis of the rotating workbench, and then the central axis of the main support coincides with its rotation center, thereby increasing the stability of the main support during rotation, and increasing the stability during coating processing of the optical lens.

[0022] 5. The driving unit of the present application can lift one end of the umbrella-shaped plate upward during coating processing of the optical lens, so that the optical lenses on the umbrella-shaped plate are coated in different inclined postures, thereby further increasing the uniformity of coating the optical lens. BRIEF DESCRIPTION OF DRAWINGS

[0023] The application will be further described in connection with the accompanying drawings and examples.

[0024] Figure 1 is a schematic view of the three-dimensional structure of the application.

[0025] Figure 2 is a schematic view of the three-dimensional structure of the application after cutting out parts of the inner ring of the umbrella stand, the main support and the positioning ring.

[0026] Figure 3 is a schematic view of the three-dimensional structure of the application. Figure 2 is an enlarged view of A of the application.

[0027] Figure 4 is a schematic view of the three-dimensional structure of the push plate, the push block and the arc-shaped plate of the application.

[0028] Figure 5 is a sectional view of the umbrella sheet, the push group and the fastening block of the application.

[0029] Figure 6 is a partial sectional view of the umbrella sheet, the clamping block and the positioning block of the application.

[0030] Figure 7 is a schematic view of the three-dimensional structure of the transmission shaft and the hydraulic cylinder of the application after cutting out parts of the inner ring of the umbrella stand and the mounting cylinder.

[0031] Figure 8 is a sectional view of the push group and the second rotation shaft of the application.

[0032] Figure 9 is a partial sectional view of the positioning group of the application.

[0033] Reference signs: 1, umbrella stand; 11, inner ring of the umbrella stand; 12, main support; 121, arc-shaped plate; 13, positioning group; 131, positioning ring; 132, locking rod; 133, positioning plate; 134, abutting spring; 135, locking block; 136, unlocking block; 137, matching rod; 2, umbrella sheet; 21, connecting group; 211, second rotation shaft; 212, connecting shaft; 213, connecting plate; 22, clamping block; 23, positioning block; 231, pushing block; 24, top extension spring; 25, reset spring; 26, transmission shaft; 3, driving unit; 31, hydraulic cylinder; 32, mounting cylinder; 4, fastening unit; 41, push group; 411, arc-shaped transmission plate; 412, synchronous rod; 413, connecting block; 414, push plate; 415, connecting spring; 42, fastening block; 43, push block. DETAILED DESCRIPTION

[0034] The examples described below are exemplary and are intended to explain the application, but cannot be understood as a limitation of the application. If a specific technique or condition is not mentioned in the examples, the technique or condition described in the literature in the art or according to the product manual is used.

[0035] Referring to Figure 1 and Figure 2 , a clamping mechanism for optical lens processing includes an umbrella frame 1 and a plurality of umbrella blades 2 arranged uniformly in the circumference, the umbrella frame 1 includes an umbrella frame inner ring 11 and a main support 12, a driving unit 3 is connected between the plurality of umbrella blades 2 and the umbrella frame inner ring 11, the umbrella blades 2 are connected through a connecting group 21 and the main support 12, and a fastening unit 4 is installed on the umbrella blades 2; a plurality of connecting rods are fixedly installed between the umbrella frame inner ring 11 and the main support 12.

[0036] Referring to Figure 6 , a plurality of mounting holes are formed in the umbrella blades 2, a clamping block 22 and a positioning block 23 are radially and slidably installed on the inner wall of the mounting hole from top to bottom, a top extension spring 24 and a return spring 25 are respectively connected between the umbrella blades 2 and the clamping block 22 and the positioning block 23, and one end of the clamping block 22 close to the middle of the mounting hole is provided in a trapezoidal structure; the clamping block 22 and the positioning block 23 cooperate to achieve fast and stable clamping of the optical lens.

[0037] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5 , the fastening unit 4 includes a pushing group 41 installed on the umbrella blade 2, a fastening block 42 corresponding to the mounting hole is installed on the pushing group 41, and the fastening block 42 and the umbrella blade 2 are slidably connected, and two circumferentially arranged pushing blocks 43 are further installed on the pushing group 41; an arc-shaped plate 121 is installed on the main support 12 at a position corresponding to the pushing block 43 through an L-shaped connecting rod, and a slope is formed at the lower end of the arc-shaped plate 121 and cooperates with the pushing block 43; the fastening unit 4 can fix the optical lens in the mounting hole when the umbrella blade 2 is turned over, thereby preventing the optical lens from shaking or deviating when it is turned over, ensuring the uniformity of the coating of the optical lens, and at the same time, the fastening unit 4 will not interfere with the installation and removal of the optical lens, facilitating the fast installation and removal of the optical lens.

[0038] Specifically, when the optical lens needs to be coated, the operator first places the optical lens with the assembled compression ring one by one in the mounting hole of the umbrella blade 2, in this process, the compression ring pushes the slope of the trapezoidal structure of the clamping block 22, and under the action of the top extension spring 24, the clamping block 22 is always tightly pressed against the side of the compression ring, until the lower end of the compression ring moves to contact the slope of the positioning block 23, completing the clamping of the optical lens, then the operator places the umbrella frame 1 on the rotating workbench of the coating machine, and starts the coating machine to coat the optical lens.

[0039] In the coating processing of the optical lens, the driving unit 3 drives the umbrella blade 2 to turn over 180 degrees, realizing the double-sided coating processing of the optical lens, and when the umbrella blade 2 starts to turn over, the inclined surface of the arc-shaped plate 121 pushes the pushing block 43 to move towards the direction of the umbrella stand inner ring 11, the pushing block 43 drives the fastening block 42 to rigidly abut on the pressing ring through the pushing group 41, so that the pressing ring is rigidly fixed in the mounting hole in the turning process of the optical lens, and the optical lens on the umbrella blade 2 is coated in different inclined postures by controlling the driving unit 3 to lift the umbrella blade 2 upwards to the end close to the umbrella stand inner ring 11, further increasing the uniformity of the coating of the optical lens, and when the coating of the optical lens is completed, the umbrella stand 1 is taken out from the coating machine, and then the optical lens is taken out from the mounting hole, completing the coating processing of the optical lens.

[0040] In order to increase the uniformity of the coating of the optical lens, the optical lens is coated in different inclined postures, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 7 , the driving unit 3 comprises a hydraulic cylinder 31 installed in the umbrella stand inner ring 11, a mounting cylinder 32 is fixedly installed on the upper end of the hydraulic cylinder 31, a rotating shaft one is fixedly installed on the end of the umbrella blade 2 close to the umbrella stand inner ring 11, the end of the rotating shaft one close to the umbrella stand inner ring 11 is hinged with a telescopic transmission shaft 26, and a rotating part is connected between the transmission shaft 26 and the mounting cylinder 32.

[0041] It should be noted that, referring to Figure 7 , the rotating part of the present application comprises a driving motor fixedly installed in the mounting cylinder 32, a driving bevel gear is installed on the output shaft of the driving motor, a driven bevel gear corresponding to the transmission shaft 26 is meshed on the driving bevel gear, and the driven bevel gear is connected with the corresponding transmission shaft 26; the driving motor is started to drive the driving bevel gear to rotate, so that the driving bevel gear drives the corresponding transmission shaft 26 to rotate through the driven bevel gear.

[0042] Specifically, when the optical lens is coated, the rotating member is started to drive the transmission shaft 26 to rotate, so that the transmission shaft 26 drives the umbrella sheet 2 to overturn 180 degrees through the rotating shaft I, and the double-sided coating of the optical lens is realized. When the umbrella sheet 2 is overturned, the installation cylinder 32 is driven to move upward by the hydraulic cylinder 31, and the umbrella sheet 2 is lifted upward by the installation cylinder 32 through the transmission shaft 26 to approach one end of the umbrella frame inner ring 11, so that the optical lens can be coated in different inclined postures.

[0043] In order to fix the multiple optical lenses on the same umbrella sheet 2 when the umbrella sheet 2 is overturned, the application adopts the following structure: referring to Figure 3 Figure 4 Figure 5 Figure 8 The pushing group 41 comprises multiple arc-shaped transmission plates 411 arranged in the radial direction and slidingly installed on the umbrella sheet 2. One end of each arc-shaped transmission plate 411 close to the middle of the umbrella frame inner ring 11 is fixedly connected with the corresponding fastening block 42. A synchronous rod 412 is fixedly installed between the multiple arc-shaped transmission plates 411. One end of the synchronous rod 412 away from the umbrella frame inner ring 11 extends into the rotating shaft II 211. A pushing plate 414 is fixedly installed on the outer side of the synchronous rod 412 through a connecting block 413. The connecting block 413 is slidingly connected with the rotating shaft II 211 through a connecting spring 415. The pushing block 43 is fixedly installed on one end of the pushing plate 414 away from the umbrella frame inner ring 11.

[0044] Specifically, when the inclined surface of the arc-shaped plate 121 pushes the pushing block 43 to move towards the umbrella frame inner ring 11, the pushing block 43 drives the pushing plate 414 to move, the pushing plate 414 drives the synchronous rod 412 to move through the connecting block 413, and the synchronous rod 412 drives the multiple arc-shaped transmission plates 411 corresponding thereto to move synchronously, so that the arc-shaped transmission plates 411 drive the fastening blocks 42 to fix the optical lenses. When the umbrella sheet 2 is overturned, the pushing block 43 moves to the position corresponding to the end of the arc-shaped plate 121 and separates from the arc-shaped plate 121. The pushing plate 414 returns to the initial position under the action of the connecting spring 415, so that the fastening blocks 42 no longer fix the optical lenses.

[0045] In order to ensure the stability of the rotating workbench when driving the main support 12 to rotate, the application adopts the following structure: referring to Figure 1 Figure 2 Figure 9 The main support 12 is provided with a positioning group 13 at the lower end. The positioning group 13 comprises a positioning ring 131 fixedly installed at the lower end of the main support 12. A plurality of installation grooves are uniformly arranged in the circumferential direction on the positioning ring 131. An L-shaped locking rod 132 is rotatably installed in the installation grooves through a torsion spring shaft. The torsion spring shaft is located in the middle of the horizontal section of the locking rod 132.​​​​​

[0046] Referring to Figure 9 The positioning ring 131 is radially slidably arranged inside and above the locking rods 132, and the positioning plates 133 are connected through the abutting springs 134 and the mounting grooves. The opposite sides of the lower ends of the plurality of positioning plates 133 are fixedly arranged with triangular locking blocks 135. The vertical sections of the locking rods 132 are used to cooperate with the locking blocks 135 to lock the positions of the positioning plates 133. The opposite sides of the plurality of locking rods 132 are provided with inclined grooves matched with the locking blocks 135.

[0047] Referring to Figure 9 The opposite sides of the lower ends of the plurality of locking rods 132 are provided with unlocking blocks 136 which are slidably connected through the sliding blocks and the mounting grooves. The inside of the positioning ring 131 is radially slidably arranged with cooperation rods 137 below the locking rods 132. The upper ends of the opposite sides and the lower ends of the opposite sides of the plurality of cooperation rods 137 are provided with inclined surfaces. The inclined surfaces of the upper ends of the cooperation rods 137 are in contact with the lower ends of the corresponding unlocking blocks 136.

[0048] Specifically, when the main support 12 is placed on the rotary workbench, the positioning ring 131 is sleeved outside the rotary workbench. During the placement of the main support 12, the inclined surfaces of the lower ends of the plurality of cooperation rods 137 are moved to the opposite sides under the pushing action of the rotary workbench, so that the inclined surfaces of the upper ends of the cooperation rods 137 push the unlocking blocks 136 to move upward, the unlocking blocks 136 push the horizontal sections of the locking rods 132 to rotate around the torsional spring shafts, so that the locking blocks 135 and the vertical sections of the locking rods 132 are separated, thereby causing the plurality of positioning plates 133 to abut against the outside of the rotary workbench under the action of the abutting springs 134, causing the central axis of the positioning ring 131 and the central axis of the main support 12 to automatically coincide with the central axis of the rotary workbench under the action of the plurality of positioning plates 133, thereby causing the central axis of the main support 12 and the rotation center to be collinear, and causing the main support 12 to stably rotate.

[0049] When the main support 12 is removed from the rotary workbench, the plurality of positioning plates 133 are manually pushed to move to the opposite sides, so that the inclined surfaces of the locking blocks 135 push the inclined surfaces of the locking rods 132 to rotate around the torsional spring shafts. When the positioning plates 133 move to the initial positions, the locking rods 132 again lock the positions of the positioning plates 133 under the action of the torsional spring shafts, so that interference is not caused when the main support 12 is placed on the rotary workbench.

[0050] In order to facilitate the quick removal of the optical lens after coating, the application adopts the following structure: Referring to Figure 6The upper end of the positioning block 23 is provided with an inclined surface near one side of the middle part of the mounting hole, and the lower end of the positioning block 23 is fixedly provided with a knob 231; after the coating of the optical lens is completed, the knob 231 is actuated to drive the positioning block 23 to move towards the direction close to the pressing ring, so that the inclined surface of the positioning block 23 pushes the pressing ring upwards to quickly take out the optical lens after the coating is completed, and then the knob 231 is loosened, so that the positioning block 23 is restored to the initial position under the action of the reset spring 25.

[0051] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0052] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature can be below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0053] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "mounted", and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, or slidingly connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A clamping mechanism for optical lens processing, comprising a holder and a plurality of umbrella blades arranged uniformly in a circumferential direction, the holder comprising a holder inner ring and a main support, characterized in that, A plurality of umbrella blades and umbrella frame inner ring are connected with a driving unit, the umbrella blades are connected through a connecting group and a main support, a fastening unit is installed on the umbrella blades, the driving unit is used for driving the umbrella blades to turn over and lift up; A positioning group is installed at the lower end of the main support and used for automatically aligning the main support with the rotating workbench of the coating machine; A plurality of installation holes are formed in the umbrella blades, a clamping block and a positioning block are radially and elastically installed on the inner wall of the installation hole from top to bottom, one end of the clamping block close to the middle of the installation hole is in trapezoidal structure, and the clamping block and the positioning block are cooperated to realize quick elastic clamping; The fastening unit comprises a pushing group installed on the umbrella blade, a fastening block corresponding to the installation hole is installed on the pushing group, and the fastening block is slidably connected with the umbrella blade; Two circumferentially arranged pushing blocks are further installed on the pushing group, an arc-shaped plate is installed on the main support corresponding to the pushing block, an inclined surface is formed in the lower end of the arc-shaped plate and matched with the pushing block, when the umbrella blade turns over, the arc-shaped plate and the pushing block are cooperated to make the pushing group drive the fastening block to abut against the optical lens, and through the combination of self-adaptive, staged elastic clamping and dynamic locking, the stable clamping of the lens during the turning over coating process is realized.

2. The clamping mechanism for optical lens processing according to claim 1, wherein The driving unit comprises a hydraulic cylinder installed in the inner ring of the umbrella frame, an installation cylinder is fixedly installed on the upper end of the hydraulic cylinder, a rotating shaft one is fixedly installed on one end of the umbrella blade close to the inner ring of the umbrella frame, a transmission shaft with telescopic structure is hinged to one end of the rotating shaft one close to the inner ring of the umbrella frame, and a rotating piece is connected between the transmission shaft and the installation cylinder.

3. The clamping mechanism for optical lens processing according to claim 1, wherein The connecting group comprises a rotating shaft two fixedly installed on one end of the umbrella blade away from the inner ring of the umbrella frame, a connecting shaft is hinged to one end of the rotating shaft two away from the umbrella blade, and the connecting shaft is rotatably connected with a connecting plate fixedly installed on the main support.

4. The clamping mechanism for optical lens processing according to claim 3, wherein The pushing group comprises a plurality of arc-shaped transmission plates arranged along the radial direction and slidably installed on the umbrella blade, one end of the arc-shaped transmission plate close to the middle of the inner ring of the umbrella frame is fixedly connected with the corresponding fastening block, and a synchronous rod is fixedly and commonly installed between the plurality of arc-shaped transmission plates.

5. The clamping mechanism for optical lens processing according to claim 4, wherein One end of the synchronous rod away from the inner ring of the umbrella frame slidably extends into the rotating shaft two, a pushing plate is fixedly installed on the outer side of the synchronous rod through a connecting block, the connecting block is slidably connected with the rotating shaft two through a connecting spring, and the pushing block is fixedly installed on one end of the pushing plate away from the inner ring of the umbrella frame.

6. The clamping mechanism for optical lens processing according to claim 1, wherein The positioning group comprises a positioning ring fixedly installed at the lower end of the main support, a plurality of installation grooves are uniformly arranged on the positioning ring in the circumferential direction, L-shaped locking rods are rotatably installed in the installation grooves through torsion spring shafts, and the torsion spring shafts are located in the middle of the horizontal section of the locking rod.

7. The clamping mechanism for optical lens processing according to claim 6, wherein A positioning plate is radially and slidably installed on the inner side of the positioning ring and above the locking rod, the positioning plate is connected with the installation groove through a pressing spring, triangular locking blocks are fixedly installed on the lower end of each of the plurality of positioning plates and on the opposite sides, the vertical section of the locking rod is used for locking the position of the positioning plate in cooperation with the locking block, and inclined grooves matched with the locking blocks are formed on the opposite sides of each of the plurality of locking rods.

8. The clamping mechanism for optical lens processing according to claim 6, wherein Unlocking blocks are arranged on the opposite sides of the lower end of each of the plurality of locking rods, the unlocking blocks are slidably connected with the installation groove through a sliding block, cooperating rods are radially and slidably installed on the inner side of the positioning ring and below the locking rod, inclined surfaces are formed on the upper end of each of the plurality of cooperating rods and on the opposite sides, and the inclined surface on the upper end of the cooperating rod is in contact with the lower end of the corresponding unlocking block.

9. The clamping mechanism for optical lens processing according to claim 1, wherein, The upper end of the positioning block is provided with an inclined surface near one side of the middle part of the mounting hole, and the lower end of the positioning block is fixedly provided with a pushing block.

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