Strong-adaptability lens detection jig

Abstract

The utility model discloses a lens detection jig with strong adaptability, which comprises a jig base and a lens, the center of the jig base is provided with a vent hole, the top end of one side of the jig base is provided with a fixed block, the fixed block is internally in threaded connection with a screw rod, and one end of the screw rod is provided with a knob. The rotary knob drives the screw rod to be screwed in the fixing block, so that the first clamping block horizontally moves on the jig base, the second clamping block synchronously and oppositely moves along with the first clamping block through cooperation of the first rack, the second rack and the gear, and therefore the equal-proportion adjusting effect on the distance between the first clamping block and the second clamping block is achieved; through the cooperation of the V-shaped grooves, lenses with different outer ring sizes can be positioned between the first clamping block and the second clamping block, compared with the prior art, the number of the detection jig is effectively reduced, the detection jig can adapt to the lenses with different outer ring sizes through an adjusting mode, and the adaptability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of lens inspection technology, and in particular to a highly adaptable lens inspection fixture. Background Technology

[0002] Optical lenses are essential components in machine vision systems, directly affecting image quality and the implementation and effectiveness of algorithms. Optical lenses can be categorized by focal length (short focal length, medium focal length, telephoto), field of view (wide-angle, standard, telephoto), and structure (fixed aperture prime lens, manual aperture prime lens, automatic aperture prime lens, manual zoom lens, automatic zoom lens, automatic aperture motorized zoom lens, and motorized triple-variable (aperture, focal length, and focus all variable) lens, etc.

[0003] After production, lenses need to be tested for air tightness. Existing air tightness testing devices usually use cylinders to press the lens onto the testing fixture and test the pressure stabilization effect by inflating to achieve air tightness testing. However, the outer ring size of lenses varies, and existing testing fixtures are usually designed according to the outer ring size of the lens, resulting in a large number of testing fixtures and poor adaptability. Each testing fixture can test a limited number of lens specifications. Therefore, a lens testing fixture with strong adaptability is needed to meet the requirements. Utility Model Content

[0004] The purpose of this invention is to provide a highly adaptable lens inspection fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a highly adaptable lens inspection fixture, comprising a fixture base and a lens. A vent hole is provided at the center of the fixture base. A fixing block is provided on the top of one side of the fixture base. A screw is threaded into the fixing block. A knob is provided at one end of the screw, and a first clamping block is movably connected to the other end. A first rack is provided at the bottom of the first clamping block. A gear is rotatably connected to the top of the fixture base. The first rack meshes with one side of the gear, and a second rack meshes with the other side of the gear. The second rack is symmetrical to the first rack. A second clamping block is provided on the second rack, symmetrical to the first clamping block. V-grooves are provided on both the first and second clamping blocks, and the lens is arranged within the two V-grooves.

[0006] Preferably, a rubber ring is embedded in the top center of the fixture base, and the top of the rubber ring can contact the bottom of the lens. The rubber ring and the vent are arranged concentrically.

[0007] Preferably, the fixing block has a threaded hole, and the screw is screwed into the threaded hole.

[0008] Preferably, a support shaft is provided on the end of the screw away from the knob. The support shaft has a T-shaped cross-section and is rotatably connected in the first clamping block.

[0009] Preferably, the fixture base has a sliding groove, the first rack and the second rack are slidably connected in the sliding groove, a positioning shaft is provided in the sliding groove, and a gear is rotatably connected to the positioning shaft.

[0010] Preferably, limiting grooves are provided on both sides of the slide groove, and the first rack and the second rack are slidably fitted into the corresponding limiting grooves.

[0011] Preferably, the V-groove is rotatably connected to several rollers, with a single roller arranged horizontally and several rollers arranged vertically and evenly.

[0012] The beneficial effects of this utility model are:

[0013] In this invention, rotating a knob causes a screw to rotate within a fixed block, allowing the first clamping block to move horizontally on the fixture base. Through the engagement of the first rack, second rack, and gear, the second clamping block moves synchronously in the opposite direction, achieving a proportionally adjustable distance between them. The V-groove allows lenses of different outer ring sizes to be positioned between the first and second clamping blocks. Compared to existing technologies, this effectively reduces the number of inspection fixtures and, through adjustment, allows the fixture to accommodate lenses of different outer ring sizes, enhancing its adaptability.

[0014] In this invention, the cooperation between the first rack, the second rack, and the gear enables the relative movement between the first clamping block and the second clamping block to achieve a synchronous and equidistant movement effect. This ensures that during lens testing, the center of lenses with different outer ring sizes always corresponds to the center of the vent hole, thus guaranteeing the accuracy of lens airtightness testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a highly adaptable lens inspection fixture proposed in this utility model;

[0016] Figure 2 This is a front cross-sectional structural diagram of a highly adaptable lens inspection fixture proposed in this utility model.

[0017] Figure 3 A schematic diagram of the first and second racks of a highly adaptable lens testing fixture proposed in this utility model, viewed from below.

[0018] Figure 4 This is a side view cross-sectional structural diagram of a highly adaptable lens inspection fixture proposed in this utility model.

[0019] Figure 5 This is a top view cross-sectional structural diagram of the first clamping block of a highly adaptable lens inspection fixture proposed in this utility model.

[0020] In the diagram: 1. Fixture base; 2. Lens; 3. Vent hole; 4. Fixing block; 5. Screw; 6. Knob; 7. First clamping block; 8. First rack; 9. Gear; 10. Second rack; 11. Second clamping block; 12. V-groove; 13. Rubber ring; 14. Threaded hole; 15. Support shaft; 16. Slide groove; 17. Positioning shaft; 18. Limiting groove; 19. Roller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 A highly adaptable lens inspection fixture includes a fixture base 1 and a lens 2. A vent 3 is provided at the center of the fixture base 1. A fixing block 4 is provided on the top of one side of the fixture base 1. A screw 5 is internally threaded to the fixing block 4. A knob 6 is provided on one end of the screw 5, and a first clamping block 7 is movably connected to the other end. A first rack 8 is provided on the bottom end of the first clamping block 7. A gear 9 is rotatably connected to the top of the fixture base 1. The first rack 8 meshes with one side of the gear 9, and a second rack 10 meshes with the other side of the gear 9. The second rack 10 is symmetrical to the first rack 8. A second clamping block 11 is provided on the second rack 10. The second clamping block 11 is symmetrical to the first clamping block 7. V-grooves 12 are provided on both the first clamping block 7 and the second clamping block 11. The lens 2 is arranged in the two V-grooves 12.

[0023] By rotating knob 6, the screw 5 is driven to rotate within the fixed block 4, causing the first clamping block 7 to move horizontally on the fixture base 1. Through the cooperation of the first rack 8, the second rack 10, and the gear 9, the second clamping block 11 moves synchronously in opposite directions with the first clamping block 7, thereby achieving a proportional adjustment effect between the first clamping block 7 and the second clamping block 11. Through the cooperation of V-groove 12, lenses 2 with different outer ring sizes are positioned between the first clamping block 7 and the second clamping block 11. Compared with the prior art, this effectively reduces the number of testing fixtures. By adjusting, the testing fixture can adapt to lenses 2 with different outer ring sizes, enhancing adaptability. Through the cooperation of the first rack 8, the second rack 10, and the gear 9, the relative movement between the first clamping block 7 and the second clamping block 11 achieves a synchronous and equidistant movement effect, thereby ensuring that during lens 2 testing, the center of lenses 2 with different outer ring sizes always corresponds to the center position of the vent 3, ensuring the accuracy of lens 2 airtightness testing.

[0024] Specifically, in this embodiment, a rubber ring 13 is embedded in the top center of the fixture base 1. The top of the rubber ring 13 can contact the bottom of the lens 2. The rubber ring 13 is arranged concentrically with the vent hole 3 to improve the airtightness of the lens 2 when the cylinder presses the lens 2 against the vent hole 3 during the testing process.

[0025] Specifically, in this embodiment, a threaded hole 14 is provided in the fixing block 4, and the screw 5 is screwed into the threaded hole 14 to achieve the horizontal movement effect during the rotation of the screw 5, and to ensure the stability of the screw 5 after rotation without the application of external force, that is, the position holding effect of the first clamping block 7 and the second clamping block 11.

[0026] Specifically, in this embodiment, a support shaft 15 is provided on the end of the screw 5 away from the knob 6. The cross-section of the support shaft 15 is T-shaped. The support shaft 15 is rotatably connected in the first clamping block 7, so as to realize the relatively independent effect between the rotation of the screw 5 and the movement of the first clamping block 7, which makes it convenient for the screw 5 to flip and drive the first clamping block 7 to move in the opposite direction.

[0027] Specifically, in this embodiment, a sliding groove 16 is provided on the fixture base 1, and the first rack 8 and the second rack 10 are slidably connected in the sliding groove 16. A positioning shaft 17 is provided in the sliding groove 16, and the gear 9 is rotatably connected to the positioning shaft 17. The sliding groove 16 provides moving space for the first rack 8 and the second rack 10, and the positioning shaft 17 provides a stable rotation fulcrum for the gear 9.

[0028] Specifically, in this embodiment, limiting grooves 18 are provided on both sides of the slide groove 16. The first rack 8 and the second rack 10 are respectively slidably fitted into the corresponding limiting grooves 18 to prevent the first rack 8 and the second rack 10 from separating from the slide groove 16 and to ensure the horizontal stability of the first clamping block 7 and the second clamping block 11.

[0029] Specifically, in this embodiment, a number of rollers 19 are rotatably connected in the V-groove 12. A single roller 19 is arranged horizontally, and a number of rollers 19 are arranged vertically and evenly. When the distance between the first clamping block 7 and the second clamping block 11 remains unchanged, the rotation direction of the rollers 19 facilitates the insertion and removal of the lens 2 between the first clamping block 7 and the second clamping block 11, and provides a movable effect for the small-amplitude descent caused by the cylinder pressing the lens 2 during the detection process.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A highly adaptable lens inspection fixture, comprising a fixture base (1) and a lens (2), characterized in that: A ventilation hole (3) is provided at the center of the fixture base (1). A fixing block (4) is provided on the top of one side of the fixture base (1). A screw (5) is threadedly connected to the fixing block (4). A knob (6) is provided on one end of the screw (5), and a first clamping block (7) is movably connected to the other end. A first rack (8) is provided on the bottom end of the first clamping block (7). A gear (9) is rotatably connected to the top of the fixture base (1). The first rack (8) meshes with one side of the gear (9). A second rack (10) meshes with the other side of the gear (9). The second rack (10) is symmetrical to the first rack (8). A second clamping block (11) is provided on the second rack (10). The second clamping block (11) is symmetrical to the first clamping block (7). A V-groove (12) is provided on both the first clamping block (7) and the second clamping block (11). The lens (2) is arranged in the two V-grooves (12).

2. The highly adaptable lens inspection fixture according to claim 1, characterized in that: A rubber ring (13) is embedded in the top center of the fixture base (1). The top of the rubber ring (13) can contact the bottom of the lens (2). The rubber ring (13) and the vent (3) are arranged concentrically.

3. The highly adaptable lens inspection fixture according to claim 1, characterized in that: The fixing block (4) has a threaded hole (14) and the screw (5) is screwed into the threaded hole (14).

4. The highly adaptable lens inspection fixture according to claim 1, characterized in that: The screw (5) is provided with a support shaft (15) at the end away from the knob (6). The cross section of the support shaft (15) is T-shaped and the support shaft (15) is rotatably connected in the first clamping block (7).

5. The highly adaptable lens inspection fixture according to claim 1, characterized in that: The fixture base (1) is provided with a slide groove (16), and the first rack (8) and the second rack (10) are slidably connected in the slide groove (16). A positioning shaft (17) is provided in the slide groove (16), and the gear (9) is rotatably connected to the positioning shaft (17).

6. The highly adaptable lens inspection fixture according to claim 5, characterized in that: Limiting grooves (18) are provided on both sides of the slide (16), and the first rack (8) and the second rack (10) slide and fit into the corresponding limiting grooves (18).

7. The highly adaptable lens inspection fixture according to claim 1, characterized in that: The V-groove (12) is rotatably connected to several rollers (19), with a single roller (19) arranged horizontally and several rollers (19) arranged vertically and evenly.

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