Lens clamping device

Abstract

The utility model discloses a lens clamping device, which relates to the technical field of lens clamping. The lens clamping device comprises a back plate and a plurality of clamping components. The back plate forms a placement area, the placement area is used for placing lenses, a plurality of the clamping components are installed at the periphery of the placement area, and the plurality of the clamping components can move toward or away from each other toward the placement area. The clamping range of the clamping component can be adjusted by moving the position of the clamping component, so that the same clamping device can be adjusted accordingly according to the size of the outer diameter of the lens, thereby clamping lenses of different outer diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of lens clamping, in particular to a lens clamping device. Background Art

[0002] With the rapid development of optical technology, medium and large-diameter optical lenses are being used more and more, and correspondingly, there are more and more optical inspection projects for medium and large-diameter lenses. From an optical point of view, the diameter of medium and large-diameter lenses is approximately in the range of 200 mm to 400 mm. In the actual processing and inspection process, the lenses need to be clamped back and forth repeatedly, that is, the clamping tooling needs to be removed during processing, and the clamping tooling needs to be installed again during inspection.

[0003] During the processing and testing process, the lens needs to be clamped and fixed. Lenses of different specifications require clamping tools of different specifications, so that lenses of different specifications need to be replaced with clamping tools of different specifications during the processing and testing process. Lenses of different specifications cannot be fixed with the same clamping tool. Utility Model Content

[0004] The main purpose of the utility model is to provide a lens clamping device, which is intended to fix lenses of different sizes by using the same clamping tool.

[0005] To achieve the above-mentioned purpose, the lens clamping device proposed by the utility model comprises:

[0006] a back plate, the back plate forming a placement area, the placement area being used for placing the lens; and,

[0007] A plurality of clamping components are installed on the periphery of the placement area, and the plurality of clamping components can move toward or away from each other toward the placement area to clamp lenses with different outer diameters.

[0008] Preferably, the clamping assembly comprises a plurality of clamping parts that can move toward or away from the back plate, and the plurality of clamping parts comprise a first clamping part and a second clamping part that are sequentially arranged from far to near the back plate;

[0009] A first clamping portion and a second clamping portion disposed between the first clamping portion and the back plate;

[0010] The first clamping portion can press the lens placed in the placement area when the first clamping portion moves close to the back plate;

[0011] Furthermore, when the second clamping parts of the plurality of clamping assemblies move close to the placement area, they can clamp the outer periphery of the lens placed in the placement area.

[0012] Preferably, the clamping assembly further comprises a clamping rod, and the first clamping portion and the second clamping portion are both movably sleeved on the clamping rod.

[0013] Preferably, the clamping portion comprises:

[0014] A stopper, wherein a clamping channel is formed in the stopper, the clamping rod is passed through the clamping channel, and the stopper is provided with a through hole communicating with the inside and outside of the clamping channel; and,

[0015] A locking member is installed in the through hole and can move inward and outward of the clamping channel to limit or release the limit of the clamping rod in the clamping channel.

[0016] Preferably, the through hole is configured as a threaded hole, and the locking member comprises a screw.

[0017] Preferably, a retaining ring is provided on the clamping rod, and the retaining ring is located on a side of the stop block away from the back plate.

[0018] Preferably, the clamping assembly further comprises a movable portion which can move toward or away from the placement area, and the clamping rod is fixedly mounted on the movable portion.

[0019] Preferably, a slide groove is provided on the back plate, the back plate has a first side and a second side arranged opposite to each other along the thickness direction thereof, the placement area is formed on the second side of the back plate, and the slide groove has a first groove section and a second groove section arranged in sequence from the first side of the back plate toward the second side, wherein the width of the first groove section is greater than the width of the second groove section;

[0020] The moving part comprises a first slider and a second slider, the first slider is installed in the first slot section and one side of the first slider abuts against a slot wall of the second slot section, the second slider comprises a guide part and a connection part, the guide part is installed in the second slot section and the thickness of the guide part is smaller than the thickness of the second slot section, the connection part is arranged on a side of the guide part facing the placement area and the width of the connection part is larger than the width of the second slot section, and one side of the connection part abuts against a side of the back plate facing the placement area;

[0021] A threaded portion is fixed to one end of the clamping rod along the length direction facing the back plate, and an operating portion is fixed to one end of the clamping rod along the length direction away from the back plate, so that the threaded portion can be driven to rotate synchronously when the operating portion rotates. The clamping rod is threadedly connected to the first slider through the threaded portion, and a connecting hole for the threaded portion to pass through is opened along the thickness direction of the second slider, and an area of ​​the clamping rod facing the placement area is larger than an area of ​​the connecting hole facing the placement area, and the side of the clamping rod facing the placement area is in contact with the side of the second slider away from the first slider.

[0022] Preferably, the connecting portion is located in the placement area, and a gasket is provided on a side of the connecting portion away from the guiding portion so as to place a lens on the gasket.

[0023] Preferably, a plurality of supporting connecting rods are arranged on the back plate, and a supporting plate is arranged on the outer sides of the plurality of supporting connecting rods.

[0024] In the technical solution provided by the utility model, the plurality of clamping assemblies can move toward or away from each other toward the placement area, and the clamping range of the clamping assemblies can be adjusted by moving the positions of the clamping assemblies, so that the same clamping device can be adjusted accordingly according to the size of the outer diameter of the lens, thereby clamping lenses with different outer diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A three-dimensional schematic diagram of an embodiment of the lens clamping device provided by the utility model;

[0027] Figure 2 for Figure 1 A schematic front view of the middle lens holding device;

[0028] Figure 3 for Figure 1 A schematic back view of the middle lens holding device;

[0029] Figure 4 for Figure 1 Schematic cross-sectional view of the lens holding device.

[0030] Description of Figure Numbers:

[0031] 1. Back plate; 2. Clamping assembly; 201. Clamping rod; 202. Clamping part; 2021. Stopper; 2022. Locking member; 203. Moving part; 2031. First slider; 2032. Second slider; 3. Slide groove; 4. Support connecting rod; 5. Support plate.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] The utility model provides a lens clamping device. Figures 1 to 4 This is an embodiment of the lens clamping device provided by the utility model.

[0037] Please also read Figures 1 to 4 The lens clamping device includes a back plate 1 and a plurality of clamping components 2. The back plate 1 forms a placement area for placing lenses. The plurality of clamping components 2 are installed on the periphery of the placement area, and the plurality of clamping components 2 can move toward or away from each other toward the placement area to clamp lenses with different outer diameters.

[0038] The lens clamping device needs to be suitable for different lens processing equipment. Therefore, a plurality of hanging holes are symmetrically arranged on the back plate 1 of the lens clamping device. The symmetrically arranged plurality of hanging holes facilitate the staff to assemble the lens clamping device to different lens processing devices to fix the lens. At the same time, a plurality of handles are symmetrically arranged on the back plate 1 to facilitate the staff to move the lens clamping device through the handles. Moreover, by evenly distributing a plurality of clamping assemblies 2 on the back plate 1, the clamping force exerted on the lens when being clamped is evenly distributed, ensuring that the clamping assembly 2 can stably clamp the lens when clamping the lens, and the lens will not shift and loosen due to uneven distribution of clamping force after clamping is completed, ensuring that the lens is difficult to separate from the clamping assembly 2 after being fixed by the clamping device. At the same time, the clamping range of the clamping device can be adaptively adjusted according to needs by being moved closer to or away from the active clamping assembly 2 toward the placement area, thereby changing the size of the clamping range, so that the clamping device can fix lenses of different outer diameters.

[0039] Therefore, in the technical solution provided by the utility model, the multiple clamping assemblies can move toward or away from each other toward the placement area, and the clamping range of the clamping assemblies can be adjusted by moving the position of the clamping assemblies, so that the same clamping device can be adjusted accordingly according to the size of the outer diameter of the lens, thereby clamping lenses with different outer diameters.

[0040] In order to improve the firmness of the clamping assembly 2 in clamping the lens, the friction between the contact surface of the clamping assembly 2 and the lens can be increased, so that the lens is difficult to break away from the fixed position under the clamping of the clamping assembly 2, and the lens cannot be separated from the clamping assembly 2 after being fixed, so that the clamping device can firmly fix the lens to complete the processing process.

[0041] Specifically, in an embodiment of the utility model, the clamping assembly 2 includes a plurality of clamping parts 202 that can move toward or away from the back plate 1, and the plurality of clamping parts 202 include a first clamping part and a second clamping part that are arranged in sequence from far to near the back plate 1, a first clamping part and a second clamping part that are arranged between the first clamping part and the back plate 1, and the first clamping part can press the lens placed in the placement area when the first clamping part moves close to the back plate 1, and the plurality of second clamping parts of the clamping assemblies 2 can clamp the periphery of the lens placed in the placement area when they move close to the placement area.

[0042] The clamping assembly 2 increases the friction between the lens and the clamping assembly 2 on the second clamping portion arranged on the contact surface with the outer periphery of the lens, so that the lens is difficult to move due to the hindrance of the large friction force after the clamping and fixing work is completed, making it difficult for the lens to separate from the clamping assembly 2. At the same time, by setting the first clamping portion, the lens is pressed on the back plate 1. When the lens is clamped between the first clamping portion and the back plate 1 on opposite sides, it cannot separate from the back plate 1, further limiting the position of the lens, making it more difficult for the lens to separate from the clamping assembly 2, thereby greatly improving the firmness of the clamping assembly 2 to clamp the lens. Under the cooperation of the first clamping portion and the second clamping portion, the friction between the lens and the clamping assembly 2 is increased, and a secondary clamping of the lens is formed, making it difficult for the lens to separate from the fixed position under two layers of hindrance, thereby ensuring that the lens is stably and firmly fixed on the back plate 1 for processing.

[0043] Furthermore, the clamping assembly 2 further comprises a clamping rod 201 , and the first clamping portion and the second clamping portion are both movably sleeved on the clamping rod 201 .

[0044] The first clamping part and the second clamping part are connected in series by the clamping rod 201, so that the first clamping part and the second clamping part can be moved simultaneously by the clamping rod 201. The simultaneous movement of the first clamping part and the second clamping part simplifies the operation steps of the clamping device, so that the staff only needs to move the clamping rod 201 to drive the first clamping part and the second clamping part to move at the same time. The simplified clamping device can complete the clamping work of the lens through fewer operation steps, thereby improving the efficiency of the lens fixing work. Fewer operation steps also make it less likely for the staff to make operating errors in the process of operating the clamping device to fix the lens. In addition, the existence of the clamping rod 201 makes it more convenient for the staff to install the first clamping part and the second clamping part on the back plate 1, and also makes it convenient for the staff to remove the first clamping part and the second clamping part from the back plate 1 for maintenance.

[0045] The clamping portion 202 includes a block 2021 and a locking member 2022. A clamping channel is formed in the block 2021. The clamping rod 201 is inserted into the clamping channel, and the block 2021 is provided with a through hole connecting the inside and outside of the clamping channel. The locking member 2022 is installed in the through hole and can move toward the inside and outside of the clamping channel to limit or release the limit of the clamping rod 201 in the clamping channel.

[0046] The first clamping part and the second clamping part are both composed of a stopper 2021 and a locking piece 2022, and the stopper 2021 is made of rubber material to prevent the first clamping part and the second clamping part from scratching the lens when contacting the lens, and also allow the second clamping part to fit more closely when clamping the outer periphery of the lens, while increasing the contact area between the second clamping part and the outer periphery of the lens, and increasing the friction force during clamping over a larger area. At the same time, the stopper 2021 is fixed to the outer side of the clamping rod 201 by the locking piece 2022, thereby locking the position of the stopper 2021 to prevent the lens from shaking with the movement of the stopper 2021, resulting in unstable clamping. The stopper 2021 and the locking piece 2022 closest to the back plate 1 on the same clamping rod 201 can form the second clamping part. , used to clamp the outer periphery of the lens and increase the friction when the clamping assembly 2 clamps the lens. The block 2021 and the locking member 2022 on the same clamping rod 201 that are farthest from the back plate 1 can form a first clamping portion, which is located on the side of the lens away from the back plate 1, and is used to press the lens onto the back plate 1, thereby clamping and fixing the lens with the back plate 1. At the same time, the length of the block 2021 on the same clamping rod 201 that is farthest from the back plate 1 extending toward the placement area is greater than the length of the block 2021 closest to the back plate 1 extending toward the placement area, so that the block 2021 farthest from the back plate 1 can contact the side of the lens away from the back plate 1, and at the same time, this length can be appropriately extended, so as to more stably press the lens onto the back plate 1.

[0047] Further, the through hole is configured as a threaded hole, and the locking member 2022 includes a screw.

[0048] The locking member 2022 is set as a screw to facilitate the staff to adjust the position of the stopper 2021. The cooperation between the screw and the threaded hole on the stopper 2021 can quickly restrict or release the restriction, so that the stopper 2021 can be adjusted to a more suitable position on the clamping rod 201 to better clamp the lens. At the same time, the cooperation between the screw and the threaded hole on the stopper 2021 makes it possible to pull the stopper 2021 to move in a direction away from the placement area when the screw is turned, so that the inner cavity wall of the clamping channel in the stopper 2021 abuts against the clamping rod 201, thereby making it impossible for the stopper 2021 to move freely along the length extension direction of the clamping rod 201, thereby completing the fixing of the position of the stopper 2021. At the same time, it is also convenient for the staff to easily remove the stopper 2021 from the clamping rod 201 and replace it after releasing the restriction on the stopper 2021, so as to avoid the stopper 2021 being used too many times and being worn out and unable to provide sufficient friction to restrict the lens.

[0049] Furthermore, a retaining ring is provided on the clamping rod 201 , and the retaining ring is located on a side of the stop block 2021 away from the back plate 1 .

[0050] By setting the retaining ring, the block 2021 is hindered when it moves outside the clamping rod 201, preventing the block 2021 from completely separating from the clamping rod 201 due to erroneous operation when adjusting the position, so that the block 2021 can only move outside the clamping rod 201 and between the retaining ring and the back plate 1. The retaining ring is set to be detachable, so that the staff can remove the retaining ring to release the restriction on the block 2021 when it is necessary to disassemble the clamping assembly 2 or replace the block 2021. The movement of the block 2021 is restricted to prevent the first clamping part and the second clamping part from separating from the clamping rod 201 due to erroneous operation during the process of adjusting the position, which requires the staff to reassemble the first clamping part and the second clamping part, resulting in an increase in work steps. The increase in work steps will increase the operation time and reduce work efficiency. Reducing erroneous operations will reduce the factors affecting work efficiency, thereby improving work efficiency.

[0051] In order to enable the clamping assembly 2 to clamp lenses with different outer diameters, the clamping range needs to be adjusted. To adjust the clamping range, the clamping rod 201 needs to drive the first clamping part and the second clamping part to move together.

[0052] Specifically, in the technical solution of the present utility model, the clamping assembly 2 further includes a movable portion 203 that can move toward or away from the placement area, and the clamping rod 201 is fixedly mounted on the movable portion 203 .

[0053] The moving part 203 arranged on the back plate 1 drives the clamping rod 201 to move, so that the clamping rod 201 can move closer to or away from the placement area with the moving part 203, so that the first clamping part and the second clamping part can move closer to or away from the placement area together with the clamping rod 201, and the clamping rod 201 drives the first clamping part and the second clamping part to move and change their positions at the same time, so that the clamping range of the clamping assembly 2 changes, so that the clamping assembly 2 can fit the outer periphery of lenses with different outer diameters to achieve the purpose of clamping lenses with different outer diameters, thereby improving the application range of the lens clamping device, so that the lens clamping device can be applied to more types of lens processing equipment. The wider the application range of the clamping device, the more suitable it is for mass production. Mass production can reduce the production cost of the clamping device, thereby reducing the cost of lens processing equipment.

[0054] Further, a slide groove 3 is provided on the back plate 1, and the back plate 1 has a first side and a second side arranged opposite to each other along its thickness direction, and the placement area is formed on the second side of the back plate 1, and in the direction from the first side of the back plate 1 toward the second side, the slide groove 3 has a first groove section and a second groove section arranged in sequence, wherein the width of the first groove section is greater than the width of the second groove section, and the moving part 203 includes a first slider 2031 and a second slider 2032, the first slider 2031 is installed in the first groove section and one side of the first slider 2031 is abutted against the groove wall of the second groove section, the second slider 2032 includes a guiding part and a connecting part, the guiding part is installed in the second groove section, and the thickness of the guiding part is less than the thickness of the second groove section, and the connecting part is arranged on the side of the guiding part facing the placement area, and The width of the connecting portion is greater than the width of the second groove section, and one side of the connecting portion is in contact with a side of the back plate 1 facing the placement area. A threaded portion is fixed to one end of the clamping rod 201 along the length direction facing the back plate 1, and an operating portion is fixed to one end of the clamping rod 201 along the length direction away from the back plate 1, so as to drive the threaded portion to rotate synchronously under the rotation of the operating portion. The clamping rod 201 is threadedly connected to the first slider 2031 through the threaded portion, and the second slider 2032 is provided with a connecting hole for the threaded portion to pass through along the thickness direction, and the area of ​​the clamping rod 201 facing the placement area is greater than the area of ​​the connecting hole facing the placement area, and the side of the clamping rod 201 facing the placement area is in contact with a side of the second slider 2032 away from the first slider 2031.

[0055] By limiting the shape of the slide groove 3, the shapes of the first slider 2031 and the second slider 2032 installed in the slide groove 3 are also subject to certain limitations. The first slider 2031 installed in the first slot section needs to be slidably connected in the first slot section, and the first slider 2031 is preferably not extended into the second slot section. The second slider 2032 installed in the second slot section needs to be slidably connected in the second slot section and needs to contact the back plate 1. The shape of the second slider 2032 is similar to a component with a stepped cross-section, that is, a smaller part is located in the slide groove 3, and a larger part is located in the placement area and does not enter the slide groove 3. That is, the guide portion needs to be located in the slide groove 3 and slidably connected to the second slot section of the slide groove 3. The connecting portion is located on the side of the back plate 1 close to the placement area and contacts the back plate 1. It is also necessary to ensure that the area of ​​the first slider 2031 facing the second slider 2032 is larger than the area of ​​the second slider 2032 facing the first slider 2031. That is, the first slider 2031 cannot be slidably connected to the second side of the slide groove 3. In the second groove section, the clamping rod 201 will move toward the back plate 1 when it is threadedly connected with the first slider 2031. At this time, as the clamping rod 201 moves, the second slider 2032 will be pressed on the back plate 1. At the same time, the clamping rod 201 will pull the first slider 2031 to move toward the placement area during the threaded connection with the first slider 2031. Finally, the first slider 2031 abuts against the groove wall of the slide groove 3, and the second slider 2032 abuts against the side of the back plate 1 facing the placement area, forming a clamping state to clamp the back plate 1. , fix the clamping rod 201, and the clamping rod 201 can move closer to or away from the placement area through the cooperation of the slider and the slide groove 3, so as to adjust the clamping range, so that the clamping assembly 2 can fit with lenses of different outer diameters to form a clamping state. At the same time, with the cooperation of the first slider 2031, the second slider 2032 and the threaded portion of the clamping rod 201, the clamping rod 201 can be fixed in position after being adjusted to a suitable position and will not move, so that the clamping assembly 2 can complete the work of clamping lenses of different outer diameters.

[0056] At the same time, the second slider 2032 also needs to ensure that the thickness of the portion located in the second groove section of the slide groove 3 is less than the thickness of the second groove section, that is, the thickness of the guide portion of the second slider 2032 is less than the thickness of the second groove section, so as to avoid the second slider 2032 from being fitted with the first slider 2031 when contacting the back plate 1. If the second slider 2032 is fitted with the first slider 2031 when contacting the back plate 1, after the clamping rod 201 is rotated, the first slider 2031 will not be able to contact and abut against the groove wall of the slide groove 3 or the second slider 2032 will not be able to abut against the side of the back plate 1 facing the placement area. As a result, the first slider 2031 and the second slider 2032 cannot form a two-way abutment and be fixed on the back plate 1, so that the position of the clamping rod 201 cannot be fixed along with the fixation of the first slider 2031 and the second slider 2032. At this time, since the clamping rod 201 cannot complete the position positioning, the first clamping part and the second clamping part on the clamping rod 201 are always in a movable state, that is, the clamping assembly 2 can always move. The clamping assembly 2 that is always in a moving state cannot stably clamp the lens, so that the lens cannot be fixed on the back plate 1, causing the clamping device to lose its clamping and fixing function.

[0057] The clamping rod 201 needs to be moved and also needs to be fixed in a certain position, so that the clamping assembly 2 can maintain the clamping range unchanged after adjusting the clamping range, thereby fixing the corresponding lens. Only one slider can be set in the slide groove 3. At this time, the threaded portion of the clamping rod 201 needs to pass through the second groove section of the slide groove 3 and be threadedly connected in the slider. At the same time, the end face area of ​​the non-threaded portion of the clamping rod 201 is larger than the end face area of ​​the threaded portion, and the end face of the clamping rod 201 connected to the threaded portion cannot enter the second groove section of the slide groove 3, and needs to contact the side of the back plate 1 close to the placement area. At this time, the threaded portion of the clamping rod 201 is threadedly connected to the slider to simply fix it. The position of the clamping rod 201, but the clamping rod 201 at this time is easy to loosen during the lens processing, resulting in clamping failure, causing the lens to move during the processing, resulting in processing failure. Therefore, the second slider 2032 is provided to enhance the fixation of the clamping rod 201 so that it is firm, so that after the clamping rod 201 is rotated by the operating part, it drives the first slider 2031 and the second slider 2032 to move in opposite directions, forming a clamping state to clamp the back plate 1, so that the clamping rod 201 can be firmly fixed on the back plate 1 after being adjusted to a suitable position, ensuring that the lens is difficult to loosen in the subsequent processing process after being fixed by the clamping device, resulting in processing failure and lens damage.

[0058] In order to prevent the lens from being scratched when placed in the placement area on the back plate 1 , it is necessary to add a scratch-proof component between the back plate 1 and the lens.

[0059] Specifically, in the technical solution of the utility model, a gasket is provided on a side of the connecting portion away from the guiding portion, so that a lens is placed on the gasket.

[0060] The gasket is arranged on a part of the second slider 2032 located in the placement area, that is, on the connecting part of the second slider 2032. When the second slider 2032 moves, the gasket also moves therewith, so that the gasket can always be located at the edge of the lens close to the back plate 1, and together with the second slider 2032, it is evenly distributed on the back plate 1 to stably support the placement of the lens. The gasket is used to prevent the lens from directly contacting the back plate 1 when placed. At the same time, by setting the gasket to a rubber material, the lens placed on the gasket does not contact the back plate 1 and will not be scratched by the gasket, thereby avoiding the problem of the lens being damaged due to over-tight clamping during the clamping process by the clamping device, resulting in a decrease in the quality of the final product.

[0061] The clamping device needs to be adapted to different lens processing equipment, so the clamping device needs to be frequently inspected and maintained. During the inspection, all components of the clamping assembly 2 need to be disassembled for comprehensive inspection. In order to facilitate the disassembly of the various components of the clamping assembly 2, a plurality of supporting connecting rods 4 are provided on the back plate 1, and support plates 5 are provided on the outer sides of the plurality of supporting connecting rods 4.

[0062] A plurality of supporting connecting rods 4 are vertically arranged on one side of the back panel 1 close to the placement area, and a supporting plate 5 is arranged parallel to the side of the back panel 1 close to the placement area, so that the back panel 1 can be erected on the desktop by relying on the cooperation of the plurality of supporting connecting rods 4 and the supporting plate 5. The erected clamping device facilitates the staff to unscrew the clamping rod 201 and pull out the first slider 2031 to the other side at the same time, so as to realize disassembly work on both sides of the back panel 1 at the same time, and then quickly disassemble the clamping assembly 2 for maintenance work. At the same time, the vertically placed back panel 1 also avoids the trouble of constantly flipping the back panel 1 during the disassembly process when it is placed horizontally.

[0063] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A lens clamping device, characterized in that: include: a back plate, the back plate forming a placement area, the placement area being used for placing the lens; and, A plurality of clamping assemblies are installed on the periphery of the placement area, and the plurality of clamping assemblies can move toward or away from each other toward the placement area to clamp lenses with different outer diameters. The clamping assemblies include a plurality of clamping parts that can move toward or away from the back plate. The plurality of clamping parts include a first clamping part and a second clamping part. The second clamping part is arranged between the first clamping part and the back plate. The first clamping part can press the lens placed in the placement area when it moves close to the back plate. The second clamping parts of the plurality of clamping assemblies can clamp the outer periphery of the lens placed in the placement area when they move close to the placement area.

2. The lens holding device according to claim 1, characterized in that: The clamping assembly also includes a clamping rod, and the first clamping portion and the second clamping portion are both movably sleeved on the clamping rod.

3. The lens holding device according to claim 2, characterized in that: The clamping portion comprises: A stopper, wherein a clamping channel is formed in the stopper, the clamping rod is passed through the clamping channel, and the stopper is provided with a through hole communicating with the inside and outside of the clamping channel; and, A locking member is installed in the through hole and can move inward and outward of the clamping channel to limit or release the limit of the clamping rod in the clamping channel.

4. The lens holding device according to claim 3, characterized in that: The through hole is configured as a threaded hole, and the locking member includes a screw.

5. The lens holding device according to claim 3, characterized in that: A retaining ring is arranged on the clamping rod, and the retaining ring is located at a side of the stop block away from the back plate.

6. The lens holding device according to claim 2, characterized in that: The clamping assembly also includes a movable portion that can move toward or away from the placement area, and the clamping rod is fixedly mounted on the movable portion.

7. The lens holding device according to claim 6, characterized in that: The back plate is provided with a slide groove, the back plate has a first side and a second side arranged opposite to each other along the thickness direction thereof, the placement area is formed on the second side of the back plate, and the slide groove has a first groove section and a second groove section arranged in sequence from the first side of the back plate toward the second side, wherein the width of the first groove section is greater than the width of the second groove section; The moving part comprises a first slider and a second slider, the first slider is installed in the first slot section and one side of the first slider abuts against a slot wall of the second slot section, the second slider comprises a guide part and a connection part, the guide part is installed in the second slot section and the thickness of the guide part is smaller than the thickness of the second slot section, the connection part is arranged on a side of the guide part facing the placement area and the width of the connection part is larger than the width of the second slot section, and one side of the connection part abuts against a side of the back plate facing the placement area; A threaded portion is fixed to one end of the clamping rod along the length direction facing the back plate, and an operating portion is fixed to one end of the clamping rod along the length direction away from the back plate, so that the threaded portion can be driven to rotate synchronously when the operating portion rotates. The clamping rod is threadedly connected to the first slider through the threaded portion, and a connecting hole for the threaded portion to pass through is opened along the thickness direction of the second slider, and an area of ​​the clamping rod facing the placement area is larger than an area of ​​the connecting hole facing the placement area, and the side of the clamping rod facing the placement area is in contact with the side of the second slider away from the first slider.

8. The lens holding device according to claim 7, characterized in that: The connecting portion is located in the placement area, and a gasket is provided on a side of the connecting portion away from the guiding portion so as to place a lens on the gasket.

9. The lens holding device according to claim 1, characterized in that: A plurality of supporting connecting rods are arranged on the back plate, and a supporting plate is arranged outside the plurality of supporting connecting rods.

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