Lens pressing clamp

Abstract

The utility model discloses a lens pressing clamp. A clamping assembly of the lens pressing clamp clamps a lens on the top through a clamping unit, and the clamping assembly is installed on the lower portion of the clamp installation frame. The pressing assembly is installed on the upper portion of the clamp installation frame and located over the lens so as to press the lens downwards. The controller controls the clamping assembly and the pressing assembly to press the lens. According to the lens pressing clamp, the electric telescopic rod is accurately controlled through the controller, automatic clamping and pressing of a lens are achieved, manual operation time is greatly shortened, production efficiency is improved, meanwhile, the unique design that a trapezoidal block, a sliding rod and a guide rail are combined is adopted for the clamping unit, and the clamping unit is convenient to use. The fixture can flexibly adapt to lenses of different sizes and shapes, frequent fixture replacement or parameter adjustment is not needed, the machining flexibility and universality are improved, in addition, due to the application of the hard rubber pressing plate, sufficient pressing force is guaranteed, meanwhile, damage to the surfaces of the lenses is effectively avoided, and the quality of the lenses is protected.

Description

Technical Field

[0001] The utility model relates to a clamp, relates to the technical field of lens bonding, and in particular to a lens pressing clamp. Background Art

[0002] In the field of lens bonding processing, traditional methods are highly dependent on a combination of manual operation and mechanical fixtures. Workers need to manually place the lenses on the processing table and carefully adjust their position to ensure accurate alignment. This process is not only time-consuming and labor-intensive, but also affected by human factors, with limited accuracy and prone to errors. In addition, since lenses may have slight size differences or irregular shapes, simple mechanical fixtures often cannot provide sufficient adaptability and precision to ensure perfect alignment every time.

[0003] To compensate for this shortcoming, many processing plants have to rely on external alignment equipment, such as cross laser positioning devices, to assist in the precise positioning of lenses. However, although these devices can improve alignment accuracy, they also increase the complexity and cost of the equipment, and require professional technicians to operate and maintain them, further raising the production threshold. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model provides a lens pressing fixture.

[0005] The technical solution adopted in this utility model is:

[0006] The lens pressing fixture of the utility model comprises:

[0007] The clamp mounting frame is used for overall support when the lens is clamped and pressed.

[0008] The clamping assembly comprises a clamping unit for clamping the lens. The clamping assembly is installed at the lower part of the fixture mounting frame, and the lens is clamped at the top of the clamping assembly.

[0009] The pressing assembly is installed on the upper part of the clamp mounting frame and is located directly above the lens, and is used to press downward the lens clamped on the clamping assembly.

[0010] The controller, which controls the clamping and pressing assemblies, is mounted on the fixture mounting frame and electrically connects the clamping and pressing assemblies to an external power source. This controller makes the entire fixture operation more intelligent and convenient, allowing users to precisely control the clamping and pressing processes with simple button presses.

[0011] The fixture mounting frame includes a base plate, an operating table, and an L-shaped support frame. The operating table is mounted on the horizontal base plate. One side of the L-shaped support frame is mounted on the base plate and located to the side of the operating table, while the other side of the L-shaped support frame is located directly above the operating table. The clamping assembly is mounted inside the operating table with its top located above the operating table. The lens is horizontally clamped on the top of the clamping assembly. The clamping assembly is mounted on the bottom surface of the other side of the L-shaped support frame and located directly above the lens. The base plate is a rectangular plate with mounting holes provided at each of its four corners. The mounting holes at the four corners allow workers to secure the base plate using external fixing bolts.

[0012] The clamping assembly also includes a support member, which includes a support platform and a blocking bar. The support platform is horizontally mounted on the top surface of the operating table. The blocking bar is horizontally welded to the top surface of the support platform and is located on the side away from the L-shaped support frame. The lens is placed on the support platform and abuts the blocking bar. The top surface of the operating table also includes a first slide groove and two second slide grooves. The first slide groove is located on the other side of the support platform and is perpendicular to the blocking bar. The end of the first slide groove is directly opposite the center of the side of the support platform that is symmetrical to the side of the blocking bar. The two second slide grooves are located on symmetrical sides of the support platform and are parallel to the blocking bar. The ends of the two second slide grooves are directly opposite the centers of the two sides of the support platform that are adjacent to the side of the blocking bar. The clamping unit is mounted inside the operating table directly below the support platform, with its top located in the first slide groove and the two second slide grooves. The lens is clamped between the blocking bar and the top of the clamping unit. The support platform serves as the main support surface for the lens, ensuring its stability during processing, while the blocking bar effectively prevents the lens from sliding forward during clamping or pressing, thereby improving processing accuracy.

[0013] The support member also includes a silicone pad mounted at the center of the top surface of the support platform. When the lens is placed on the support platform, the bottom surface of the lens flexibly contacts the top surface of the silicone pad. The silicone pad protects the bottom of the lens from being scratched during placement and processing.

[0014] The two lever of the second end of the boom is pivotally connected to the bottom of the second support frame, and the two booms are connected multiple times by a threaded connection to each other, and the two booms are connected multiple times by a threaded connection to each other. The two lever of the second end inwardly move the lever to the left of the second support frame, and the two limit switches are connected along the pivotal axis to the left of the second support frame, so that the two limit switches are connected along the pivotal axis to the right of the support frame.

[0015] The clamping unit also includes two guide rails. The bottom end surfaces of the two transverse clamping plates are each provided with two parallel, spaced, and perpendicular sliding grooves to the slide rod. The two ends of the two guide rails are horizontally slidably installed in the sliding grooves on the bottom end surfaces of the two transverse clamping plates and are located directly below the first trapezoidal block and do not contact each other.

[0016] The clamping unit also includes three silicone blocks: two mounted on opposite sides of the tops of the two horizontal clamping plates, and one mounted on the top of the vertical clamping plate, facing the barrier strip. Each block is in active contact with the outer side of the lens. The silicone blocks act as a buffer layer between the clamping plates and the lens, providing a soft contact surface during the clamping process, reducing potential damage to the outer side of the lens from the clamping force and further protecting the lens' surface quality.

[0017] The pressing assembly includes a second electric telescopic rod and a pressing plate. The body of the second electric telescopic rod is installed on the bottom surface of the other side bracket of the L-shaped support frame. The pressing plate is horizontally installed at the telescopic end of the second electric telescopic rod and is located directly above the lens.

[0018] The pressing plate is a hard rubber plate. Using the hard rubber plate as the material of the pressing plate not only ensures sufficient rigidity and strength to provide a stable pressing force, but also avoids the risk of scratches that may be caused by hard materials such as metal.

[0019] The beneficial effects of the utility model are:

[0020] The utility model realizes automatic clamping and pressing of the lens through the precise control of the first electric telescopic rod and the second electric telescopic rod by the controller, which greatly shortens the manual operation time and improves the production efficiency. At the same time, the clamping unit adopts a unique design combining a trapezoidal block with a slide rod and a guide rail, so that the clamp can flexibly cope with lenses of different sizes and shapes without the need for frequent replacement of the clamp or adjustment of parameters, thereby improving the flexibility and versatility of processing. In addition, the application of the hard rubber pressure plate effectively avoids damage to the lens surface while ensuring sufficient pressing force, thereby protecting the quality of the lens.

[0021] The lens pressing fixture of the utility model is easy to operate. The operator can quickly clamp and press the lens placed on the supporting table only by using the controller, which reduces the difficulty of operation, improves production efficiency and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the utility model when viewed from above;

[0024] Figure 3 This is a rear view structural diagram of the utility model;

[0025] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the clamping unit of the utility model;

[0027] In the figure: 1. Base plate, 2. Operating table, 3. Controller, 4. L-shaped support frame, 5. Clamping unit, 51. First electric telescopic rod, 52. Sliding rod, 53. First trapezoidal block, 54. Horizontal clamping plate, 55. Vertical clamping plate, 56. First compression spring, 57. Second compression spring, 58. Second trapezoidal block, 59. Push rod, 510. Silicone block, 511. Guide rail, 6. Support member, 61. Support platform, 62. Blocking bar, 63. Silicone pad, 7. Second electric telescopic rod, 8. Press plate, 9. First slide groove, 10. Second slide groove, 11. Lens, 12. Mounting hole. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, the lens pressing fixture of the present invention includes a fixture mounting frame, a clamping assembly, a pressing assembly and a controller 3. The fixture mounting frame is used for overall support when the lens 11 is clamped and pressed. The clamping assembly includes a clamping unit 5 for clamping the lens 11. The clamping assembly is installed at the lower part of the fixture mounting frame, and the lens 11 is clamped at the top of the clamping assembly. The pressing assembly is installed at the upper part of the fixture mounting frame and is located directly above the lens 11. It is used to press downward the lens 11 clamped on the clamping assembly. The controller 3 is used to control the clamping assembly and the pressing assembly. It is installed on the fixture mounting frame and electrically connects the clamping assembly, the pressing assembly and an external power supply. The setting of the controller 3 makes the operation of the entire fixture more intelligent and convenient. The user can achieve precise control of the clamping and pressing process through simple button operation.

[0030] The fixture mounting frame includes a base plate 1, an operating table 2, and an L-shaped support frame 4. The operating table 2 is mounted on the horizontal base plate 1. One side of the L-shaped support frame 4 is mounted on the base plate 1 and located to the side of the operating table 2, while the other side of the L-shaped support frame 4 is located directly above the operating table 2. The clamping assembly is installed inside the operating table 2 with its top located above the operating table 2. The lens 11 is horizontally clamped on the top of the clamping assembly. The clamping assembly is installed on the bottom surface of the other side of the L-shaped support frame 4 and located directly above the lens 11. The base plate 1 is a rectangular plate with mounting holes 12 at each of its four corners. The mounting holes 12 at the bottom corners allow workers to secure the base plate 1 using external fixing bolts.

[0031] The clamping assembly also includes a supporting member 6, which includes a supporting platform 61 and a blocking bar 62. The supporting platform 61 is horizontally installed on the top surface of the operating table 2, and the blocking bar 62 is horizontally welded to the top surface of the supporting platform 61 and is located on the side away from the L-shaped support frame 4. The lens 11 is placed on the supporting platform 61 and abuts the blocking bar 62; the top surface of the operating table 2 is also provided with a first slide groove 9 and two second slide grooves 10. The first slide groove 9 is opened on the other side of the supporting platform 61 and is perpendicular to the blocking bar 62. The end of the first slide groove 9 is directly opposite to the supporting platform 61. The support platform 61 is located at the center of a side symmetrical to the side where the blocking bar 62 is located. Two second chutes 10 are respectively provided on symmetrical sides of the support platform 61 and parallel to the blocking bar 62. The ends of the two second chutes 10 face the centers of the two adjacent sides of the support platform 61 and the blocking bar 62. The clamping unit 5 is installed inside the operating table 2 directly below the support platform 61, with its top located in the first chutes 9 and the two second chutes 10. The lens 11 is clamped between the blocking bar 62 and the top of the clamping unit 5. The support platform 61 serves as the primary support surface for the lens 11, ensuring its stability during processing. The blocking bar 62 effectively prevents the lens 11 from sliding forward during the clamping or pressing process, thereby improving processing accuracy.

[0032] The support member 6 also includes a silicone pad 63, which is mounted at the center of the top surface of the support platform 61. When the lens 11 is placed on the support platform 61, the bottom surface of the lens 11 movably contacts the top surface of the silicone pad 63. The silicone pad 63 protects the bottom of the lens 11 and prevents it from being scratched during placement and processing.

[0033] like Figure 4 and Figure 5As shown, the clamping unit 5 includes a first electric telescopic rod 51, two sliding rods 52, a first trapezoidal block 53, two horizontal clamping plates 54, a vertical clamping plate 55, two first compression springs 56, two second compression springs 57, two second trapezoidal blocks 58 and a top rod 59. The two sliding rods 52 are installed horizontally at intervals in the middle of the operating table 2 and are perpendicular to the blocking bar 62. The two sliding rods 52 are located directly below the supporting platform 61 and are connected to the inner side wall of the operating table 2 at both ends; the first trapezoidal block 53 is a regular trapezoid and is arranged horizontally. The first trapezoidal block 53 is movable. On the two slide bars 52 and the two bottom edges are perpendicular to the two slide bars 52, the shorter bottom edge of the first trapezoidal block 53 is located on the side away from the blocking bar 62, the body of the first electric telescopic rod 51 is installed on the inner side wall of the operating table 2 and is located in the middle of one end of the two slide bars 52 close to the blocking bar 62, the telescopic end of the first electric telescopic rod 51 is horizontally connected to the center of the longer bottom edge of the first trapezoidal block 53, the other ends of the two slide bars 52 are respectively equipped with a second compression spring 57 and the bottom of the vertical clamping plate 55 arranged vertically, the two second compression springs 57 are located in the vertical The top rod 59 is connected between the middle part of one side of the vertical clamping plate 55 and the center of the shorter bottom side of the first trapezoidal block 53, and the top of the vertical clamping plate 55 is slidably installed in the first slide groove 9 of the operating table 2; the two second trapezoidal blocks 58 are right-angled trapezoids, and the two second trapezoidal blocks 58 are horizontally symmetrically arranged on both sides of the first trapezoidal block 53 and the oblique sides respectively abut the two oblique sides of the first trapezoidal block 53. The bottom sides of the two second trapezoidal blocks 58 are parallel to the slide bar 52, and the two second The longer bottom surface of the trapezoidal block 58 is respectively connected to one side surface of the bottom of the vertically arranged transverse clamping plate 54, and the center of the other side surface of the bottom of the two transverse clamping plates 54 is respectively connected to the inner side wall of the operating table 2 through the horizontally arranged first compression spring 56. The elastic direction of the two first compression springs 56 is perpendicular to the slide rod 52, and the top of the two transverse clamping plates 54 is respectively slidably installed in the second slide groove 10 of the operating table 2; the lens 11 is clamped between the blocking bar 62 and the top of the two transverse clamping plates 54 and the vertical clamping plate 55 of the clamping unit 5.

[0034] The clamping unit 5 also includes two guide rails 511. The bottom end surfaces of the two transverse clamping plates 54 are each provided with two parallel and spaced sliding grooves perpendicular to the slide rod 52. The two ends of the two guide rails 511 are horizontally slidably installed in the sliding grooves on the bottom end surfaces of the two transverse clamping plates 54 and are located directly below the first trapezoidal block 53 and do not contact each other.

[0035] The clamping unit 5 also includes three silicone blocks 510. Two of these blocks 510 are mounted on opposite sides of the tops of the two horizontal clamping plates 54, and another block 510 is mounted on the top side of the vertical clamping plate 55, facing the barrier strip 62. Each block 510 is in active contact with the outer side of the lens 11. The blocks 510 act as a buffer layer between the clamping plates 54 and 55 and the lens 11, providing a soft contact surface during the clamping process, reducing potential damage to the outer side of the lens 11 from the clamping force and further protecting the surface quality of the lens 11.

[0036] The clamping assembly includes a second electric telescopic rod 7 and a pressure plate 8. The body of the second electric telescopic rod 7 is mounted on the bottom surface of the bracket on the other side of the L-shaped support frame 4. The pressure plate 8 is horizontally mounted at the telescopic end of the second electric telescopic rod 7, directly above the lens 11. The pressure plate 8 is made of a hard rubber plate. Using hard rubber as the material for the pressure plate 8 ensures sufficient rigidity and strength to provide stable clamping force while avoiding the risk of scratches that may be caused by hard materials such as metal.

[0037] The telescopic end of the first electric telescopic rod 51 is pushed forward, and the first trapezoidal block 53 moves along the sliding rod 52 toward the vertical clamping plate 55, and the top rod 59 pushes the vertical clamping plate 55, so that the top of the vertical clamping plate 55 slides along the sliding rod 52 and the first slide groove 9, and squeezes the second compression spring 57. At the same time, the first trapezoidal block 53 pushes the second trapezoidal block 58 to both sides in the process of moving toward the vertical clamping plate 55, so that the horizontal clamping plate 54 slides along the guide rail 511 and the second slide groove 10, and squeezes the first compression spring 56, and the horizontal clamping plate 54 and the vertical clamping plate 55 move toward the end away from the supporting platform 61. At this time, the staff can place the lens 11 to be bonded on the silicone pad 63 on the top of the supporting platform 61, and make the front end of the lens 11 rest against the rear side of the blocking bar 62 to prepare for the subsequent clamping of the lens 11 Preparation, the horizontal clamping plate 54 and the vertical clamping plate 55 are respectively fixedly installed with a silicone block 510 at one end near the top of the support platform 61, and the silicone block 510 is respectively in active contact with the outer side of the lens 11. The telescopic end of the first electric telescopic rod 51 is controlled by the controller 3 to drive the first trapezoidal block 53 to retract. Under the action of the first compression spring 56 and the second compression spring 57, the horizontal clamping plate 54 and the vertical clamping plate 55 start to move in the opposite direction, so that the silicone block 510 on the top can clamp the lens 11. It also includes a controller 3, which is arranged at the right front end of the upper surface of the operating table 2. The output end of the controller 3 is electrically connected to the input end of the first electric telescopic rod 51 and the second electric telescopic rod 7. The input end of the controller 3 is electrically connected to the output end of the external power supply. Through the setting of the controller 3, it is convenient for the staff to control the first electric telescopic rod 51 and the second electric telescopic rod 7 respectively.

[0038] The working principle of this utility model is as follows:

[0039] When in use, first start the first electric telescopic rod 51 through the controller 3, and the telescopic end of the first electric telescopic rod 51 is pushed forward, so that the first trapezoidal block 53 moves along the sliding rod 52 toward the vertical clamping plate 55, and the vertical clamping plate 55 is pushed up by the top rod 59 at the front end of the first trapezoidal block 53, so that the top of the vertical clamping plate 55 slides along the sliding rod 52 and the first sliding groove 9, and squeezes the second compression spring 57. At the same time, since the left and right sides of the first trapezoidal block 53 are respectively in sliding contact with the second trapezoidal block 58 on the opposite side of the horizontal clamping plate 54, the first trapezoidal block 53 pushes the second trapezoidal block 58 to both sides in the process of moving toward the vertical clamping plate 55, thereby causing the horizontal clamping plate 54 to slide along the guide rail 511 and the second sliding groove 10, and squeezing the first compression spring 56. At this time, the horizontal clamping plate 5 4 and the vertical clamping plate 55 move toward the end away from the supporting platform 61. Then, the staff can place the lens 11 to be bonded on the silicone pad 63 on the top of the supporting platform 61, and make the front end of the lens 11 rest against the rear side of the blocking bar 62. Then, the controller 3 controls the telescopic end of the first electric telescopic rod 51 to drive the first trapezoidal block 53 to retract. Under the action of the first compression spring 56 and the second compression spring 57, the horizontal clamping plate 54 and the vertical clamping plate 55 start to move in opposite directions until the silicone block 510 on their top tightly clamps the lens 11. Then, the user can start the second electric telescopic rod 7 through the controller 3, so that its telescopic end drives the pressure plate 8 to descend, so that the pressure plate 8 presses the lens 11. The pressure plate 8 is a hard rubber plate that can not only provide sufficient pressure but also avoid damage to the lens 11.

[0040] The circuit connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0041] Components not described in detail herein are prior art.

[0042] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A lens pressing fixture, characterized in that: include: A fixture mounting frame, used for overall support when the lens (11) is clamped and pressed; A clamping assembly, comprising a clamping unit (5) for clamping a lens (11), the clamping assembly being mounted on the lower portion of a fixture mounting frame, and the lens (11) being clamped on the top of the clamping assembly; A pressing assembly is mounted on the upper portion of the fixture mounting frame and is located directly above the lens (11), and is used to press downward the lens (11) clamped on the clamping assembly; The controller (3) is used for controlling the clamping assembly and the pressing assembly, is mounted on the fixture mounting frame and is electrically connected to the clamping assembly, the pressing assembly and an external power source.

2. The lens pressing fixture according to claim 1, characterized in that: The fixture mounting frame comprises a base plate (1), an operating table (2) and an L-shaped support frame (4); the operating table (2) is mounted on the horizontally arranged base plate (1); one side bracket of the L-shaped support frame (4) is mounted on the base plate (1) and is located on the side of the operating table (2); the other side bracket of the L-shaped support frame (4) is located directly above the operating table (2); a clamping assembly is mounted inside the operating table (2) and its top is located above the operating table (2); the lens (11) is horizontally clamped on the top of the clamping assembly; and a pressing assembly is mounted on the bottom surface of the other side bracket of the L-shaped support frame (4) and is located directly above the lens (11).

3. The lens pressing fixture according to claim 2, characterized in that: The clamping assembly further comprises a supporting member (6), the supporting member (6) comprising a supporting platform (61) and a blocking bar (62), the supporting platform (61) being horizontally mounted on the top surface of the operating table (2), the blocking bar (62) being horizontally welded to the top surface of the supporting platform (61) and being located on a side away from the L-shaped support frame (4), the lens (11) being placed on the supporting platform (61) and abutting against the blocking bar (62); the top surface of the operating table (2) is further provided with a first slide groove (9) and two second slide grooves (10), the first slide groove (9) being provided on the other side of the supporting platform (61) and being perpendicular to the blocking bar (62), the end of the first slide groove (9) The first slide groove (9) and the second slide groove (10) are respectively provided on the symmetrical sides of the supporting platform (61) and are parallel to the blocking bar (62). The ends of the two second slide grooves (10) are respectively provided on the symmetrical sides of the supporting platform (61) and are parallel to the blocking bar (62). The ends of the two second slide grooves (10) are respectively provided on the symmetrical sides of the supporting platform (61) and are parallel to the blocking bar (62). The ends of the two second slide grooves (10) are respectively provided on the centers of the two sides adjacent to the side of the supporting platform (61) and the blocking bar (62). The clamping unit (5) is installed inside the operating table (2) directly below the supporting platform (61) and the top is located in the first slide groove (9) and the two second slide grooves (10). The lens (11) is clamped between the blocking bar (62) and the top of the clamping unit (5).

4. The lens pressing fixture according to claim 3, characterized in that: The supporting member (6) further comprises a silicone pad (63), which is mounted at the center of the top surface of the supporting platform (61). When the lens (11) is placed on the supporting platform (61), the bottom surface movably contacts the top surface of the silicone pad (63).

5. The lens pressing fixture according to claim 3, characterized in that: The clamping unit (5) comprises a first electric telescopic rod (51), two sliding rods (52), a first trapezoidal block (53), two transverse clamping plates (54), a vertical clamping plate (55), two first compression springs (56), two second compression springs (57), two second trapezoidal blocks (58) and a top rod (59), wherein the two sliding rods (52) are installed horizontally at intervals in the middle of the operating table (2) and are perpendicular to the blocking bar (62), and the two sliding rods (52) are located directly below the supporting platform (61) and are connected at both ends to the inner side wall of the operating table (2); the first trapezoidal block (53) is a regular trapezoidal block and is arranged horizontally, and the first trapezoidal block (53) is a right trapezoidal block and is arranged horizontally. ) is movably mounted on the two slide bars (52) and the two bottom edges are perpendicular to the two slide bars (52). The shorter bottom edge of the first trapezoidal block (53) is located on the side away from the blocking bar (62). The body of the first electric telescopic rod (51) is mounted on the inner side wall of the operating table (2) and is located in the middle of one end of the two slide bars (52) close to the blocking bar (62). The telescopic end of the first electric telescopic rod (51) is horizontally connected to the center of the longer bottom edge of the first trapezoidal block (53). The other ends of the two slide bars (52) are respectively mounted with a second compression spring (57) and the bottom of a vertical clamping plate (55) arranged vertically. The two second compression springs (57) are located at the bottom of the vertical clamping plate (55). The top rod (59) is connected between the middle part of one side of the vertical clamping plate (55) and the center of the shorter bottom side of the first trapezoidal block (53), and the top of the vertical clamping plate (55) is slidably installed in the first slide groove (9) of the operating table (2); the two second trapezoidal blocks (58) are right-angled trapezoids, and the two second trapezoidal blocks (58) are horizontally symmetrically arranged on both sides of the first trapezoidal block (53) and the oblique sides respectively abut the two oblique sides of the first trapezoidal block (53). The bottom sides of the two second trapezoidal blocks (58) are parallel to the slide bar (52). The longer bottom surfaces of the two trapezoidal blocks (58) are respectively connected to one side surface of the bottom of the vertically arranged transverse clamping plate (54); the centers of the other side surfaces of the bottoms of the two transverse clamping plates (54) are respectively connected to the inner side walls of the operating table (2) through horizontally arranged first compression springs (56); the elastic directions of the two first compression springs (56) are perpendicular to the slide bar (52); the tops of the two transverse clamping plates (54) are respectively slidably installed in the second slide groove (10) of the operating table (2); the lens (11) is clamped between the blocking bar (62) and the tops of the two transverse clamping plates (54) and the vertical clamping plate (55) of the clamping unit (5).

6. The lens pressing fixture according to claim 5, characterized in that: The clamping unit (5) further comprises two guide rails (511), and the bottom end surfaces of the two transverse clamping plates (54) are provided with two parallel and spaced sliding grooves perpendicular to the slide rod (52), and the two ends of the two guide rails (511) are horizontally slidably installed in the sliding grooves on the bottom end surfaces of the two transverse clamping plates (54) and are located directly below the first trapezoidal block (53).

7. The lens pressing fixture according to claim 5, characterized in that: The clamping unit (5) further comprises three silicone blocks (510), wherein two silicone blocks (510) are mounted on the side opposite to the top of the two transverse clamping plates (54), and another silicone block (510) is mounted on the side opposite to the blocking strip (62) on the top of the vertical clamping plate (55), and each silicone block (510) is in movable contact with the outer side of the lens (11).

8. The lens pressing fixture according to claim 2, characterized in that: The pressing assembly comprises a second electric telescopic rod (7) and a pressing plate (8), wherein the body of the second electric telescopic rod (7) is mounted on the bottom surface of the other side bracket of the L-shaped support frame (4), and the pressing plate (8) is horizontally mounted on the telescopic end of the second electric telescopic rod (7), and the pressing plate (8) is located directly above the lens (11).

9. The lens pressing fixture according to claim 8, characterized in that: The pressing plate (8) is a hard rubber plate.

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