Lens focal length detector for pulse type material defect detection device

Abstract

The utility model relates to a pulse type material defect detection device, in particular to a lens focal length detector for the pulse type material defect detection device, which comprises a support seat, a movable seat, a lens main body, a diaphragm, a collimator and an observation whiteboard, the top of the support seat is connected with the movable seat in a sliding manner, and the top of the movable seat is provided with the lens main body; a diaphragm is arranged on the outer side of the lens body. When the lens body moves, the connecting block is driven to move, so that the clamping block is driven to move, the inserting block is not prone to shaking through the rubber block, meanwhile, the placing stability of the supporting base can be enhanced through the balance weight base and the anti-skid pad at the bottom of the balance weight base, and in the focal length measuring process, the inserting plate can be inserted into the U-shaped block at the top of the lens body, so that the focal length is measured. The top of the U-shaped block and the top of the observation whiteboard are located at the same height, so that a vernier caliper can be conveniently used for measuring focal length.

Description

Technical Field

[0001] The utility model relates to a pulse type material defect detection device, in particular to a lens focal length detector used for the pulse type material defect detection device. Background Art

[0002] A pulsed material defect detection device is an advanced nondestructive testing device that uses a pulse signal to stimulate the internal physical properties of a material and identifies defects or anomalies in the material by detecting and analyzing these properties. A pulsed material defect detection device uses a lens focal length detector, a precision instrument specifically designed to measure the focal length of the lens in a pulsed material defect detection device. This detector has a wide range of applications in optical manufacturing, materials science, and quality control. A lens focal length detector is primarily used to measure the focal length of a lens. Especially in pulsed material defect detection devices, the focal length accuracy of the lens is crucial to the accuracy of the test results. A lens focal length detector typically uses an optical imaging method. In this method, the instrument uses a parallel light beam generated by a collimator to form a converging light spot after passing through the lens to be tested. The position of the minimum light spot can be used with a vernier caliper to measure the distance between the lens and the observation whiteboard, i.e., the focal length of the lens. Different lenses are required during the use of a lens focal length detector.

[0003] Traditional lenses are usually integrated with the moving base. When replacing the lens, the observation whiteboard and lenses need to be removed from the support base and another set of lenses need to be installed. This method of replacing the lens is relatively time-consuming. In addition, when the moving base and the observation whiteboard are moved, it is easy for the support base to shift its position, thereby affecting subsequent detection operations. Summary of the Invention

[0004] The purpose of the present utility model is to provide a lens focal length detector for a pulsed material defect detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A lens focal length detector for a pulsed material defect detection device, comprising a support seat, a movable seat, a lens body, an aperture, a parallel light tube and an observation whiteboard, the top of the support seat is slidably connected to the movable seat, the top of the movable seat is provided with a lens body, the outer side of the lens body is provided with an aperture, the outer side of the aperture away from the lens body is provided with a parallel light tube, the outer side of the lens body away from the aperture is provided with an observation whiteboard, a card slot is provided on the surface of the movable seat close to the lens body, the bottom of the lens body is connected to a connecting block, the inner wall of the connecting block is connected to a limiting block, the interior of the connecting block is connected to a spring, one end of the spring is connected to a card block, and a limiting slot is provided on the side of the card block close to the limiting block.

[0006] Preferably, a sliding structure is formed between the limiting block and the locking block through a limiting groove.

[0007] Preferably, a docking groove matching the size of the top of the movable seat is provided inside the connecting block.

[0008] Preferably, a plug-in block is connected to the bottom of the support seat, a rubber block is connected inside the plug-in block, and a counterweight base is provided at the bottom of the plug-in block.

[0009] Preferably, a fixing groove is provided on the surface of the counterweight base, and an anti-slip pad is bonded to the bottom of the counterweight base.

[0010] Preferably, a U-shaped block is connected to the top of the lens body, and an inserting plate is inserted into the interior of the U-shaped block.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. When the lens body of the utility model moves, it drives the connecting block to move, and when the connecting block moves, it drives the card block to move. When the card block moves, its inclined surface will be squeezed by the inner wall of the card slot, so that the card block can compress the spring. When the end of the card block completely slides out of the card slot, the connecting block can be separated from the moving seat, so that the lens body can be removed from the end of the moving seat and another set of lens bodies can be installed. The connecting block at the bottom of the other set of lens bodies can be quickly engaged and docked with the card slot on the moving seat through two sets of card blocks. In this way, the lens body can be quickly replaced without removing the observation whiteboard from the support seat, thereby improving the detection efficiency.

[0013] 2. When the utility model is used, the two sets of plug-in blocks at the bottom of the support seat can be inserted into the interior of the counterweight base through the fixing groove. When the bottom end of the plug-in block moves into the interior of the fixing groove, the rubber block will be squeezed by the inner wall of the fixing groove, and the rubber block makes the plug-in block less likely to shake. At the same time, the counterweight base and the anti-slip pad at the bottom of it can enhance the stability of the support seat. In the process of measuring the focal length, the plug-in plate can be inserted into the interior of the U-shaped block at the top of the lens body, so that the top of the U-shaped block and the top of the observation whiteboard are at the same height, thereby facilitating the use of a vernier caliper to measure the focal length. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the connecting block of the utility model;

[0016] Figure 3 This is a schematic diagram of the right side cross-sectional structure of the connecting block of the utility model;

[0017] Figure 4 This is a schematic diagram of the front cross-sectional structure of the counterweight base of the utility model;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the card block of the utility model.

[0019] In the figure: 1. Support seat; 2. Moving seat; 3. Lens body; 4. Aperture; 5. Collimator; 6. Observation whiteboard; 7. Card slot; 8. Connecting block; 9. Limit block; 10. Spring; 11. Card block; 12. Limit slot; 13. Plug-in block; 14. Rubber block; 15. Counterweight base; 16. Fixing slot; 17. Anti-slip pad; 18. U-shaped block; 19. Insert plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , a lens focal length detector for a pulsed material defect detection device includes a support seat 1, a moving seat 2, a lens body 3, an aperture 4, a collimator 5 and an observation whiteboard 6. The top of the support seat 1 is slidably connected to the moving seat 2, the top of the moving seat 2 is provided with a lens body 3, the outer side of the lens body 3 is provided with an aperture 4, the outer side of the aperture 4 away from the lens body 3 is provided with a collimator 5, and the outer side of the lens body 3 away from the aperture 4 is provided with an observation whiteboard 6. A slot 7 is provided on the surface of the moving seat 2 close to the lens body 3, the bottom of the lens body 3 is connected with a connecting block 8, the inner wall of the connecting block 8 is connected to a limiting block 9, the inside of the connecting block 8 is connected with a spring 10, one end of the spring 10 is connected with a card block 11, and a limiting groove 12 is provided on the side of the card block 11 close to the limiting block 9, and a sliding structure is formed between the limiting block 9 and the card block 11 through the limiting groove 12, and a docking groove matching the size of the top of the moving seat 2 is provided inside the connecting block 8.

[0022] During specific implementation, when replacing the lens body 3, the lens body 3 to be replaced can be pulled in the direction away from the moving seat 2. When the lens body 3 moves, the connecting block 8 is driven to move. When the connecting block 8 moves, the card block 11 is driven to move. When the card block 11 moves, its inclined surface will be squeezed by the inner wall of the card slot 7, so that the card block 11 can compress the spring 10. At the same time, the card block 11 can slide with the limit block 9 through the limit groove 12. When the end of the card block 11 completely slides out of the inside of the card slot 7, the connecting block 8 can be separated from the moving seat 2, so that the lens body 3 can be removed from the end of the moving seat 2, and another group of lens bodies 3 can be installed. The connecting block 8 at the bottom of the other group of lens bodies 3 can be quickly engaged and docked with the card slot 7 on the moving seat 2 through two groups of card blocks 11.

[0023] See Figure 1 、 Figure 2 、 Figure 3 and Figure 5 In this way, the lens body 3 can be quickly replaced without removing the observation whiteboard 6 from the support base 1, thereby improving the detection efficiency.

[0024] See Figure 1 and Figure 4 The bottom of the support seat 1 is connected to a plug-in block 13, and a rubber block 14 is connected to the inside of the plug-in block 13. A counterweight base 15 is provided at the bottom of the plug-in block 13. A fixing groove 16 is provided on the surface of the counterweight base 15. A non-slip pad 17 is bonded to the bottom of the counterweight base 15. The top of the lens body 3 is connected to a U-shaped block 18, and a plug-in plate 19 is plugged into the inside of the U-shaped block 18. Two groups of rubber blocks 14 are symmetrically arranged with the plug-in block 13 as the center.

[0025] During specific implementation, when the utility model is used, it is necessary to move the positions of the movable seat 2 and the observation whiteboard 6 back and forth on the support seat 1 to find the position of the minimum light spot on the observation whiteboard 6. During the movement of the movable seat 2 and the observation whiteboard 6, it is easy to cause the position of the support seat 1 to shift, thereby affecting subsequent detection operations. The two sets of plug-in blocks 13 at the bottom of the support seat 1 can be inserted into the interior of the counterweight base 15 through the fixed groove 16. When the bottom end of the plug-in block 13 moves to the interior of the fixed groove 16, the rubber block 14 will be squeezed by the inner wall of the fixed groove 16, causing the rubber block 14 to be squeezed and deformed.

[0026] See Figure 1 and Figure 4It can be seen that the rubber block 14 makes the plug-in block 13 less likely to shake, and at the same time the counterweight base 15 and the anti-slip pad 17 at its bottom can improve the stability of the support base 1, so that the support base 1 is not easily affected by the movement of the observation whiteboard 6 and the movable base 2 and shifted in position. In the process of measuring the focal length, the plug-in plate 19 can be inserted into the inside of the U-shaped block 18 at the top of the lens body 3, so that the top of the U-shaped block 18 and the top of the observation whiteboard 6 are at the same height, thereby facilitating the use of a vernier caliper to measure the focal length.

[0027] To sum up, when the present invention is used, the lens body 3 to be replaced can be pulled in the direction away from the movable seat 2. When the lens body 3 moves, the connecting block 8 is driven to move. In this way, the lens body 3 can be quickly replaced without removing the observation whiteboard 6 from the support seat 1, thereby improving the detection efficiency. The rubber block 14 makes the plug-in block 13 less likely to shake. At the same time, the counterweight base 15 and the anti-slip pad 17 at the bottom of the support seat 1 can enhance the stability of the support seat 1, so that the support seat 1 is not easily affected by the movement of the observation whiteboard 6 and the movable seat 2 and the position displacement occurs. In the process of measuring the focal length, the plug-in plate 19 can be inserted into the inside of the U-shaped block 18 at the top of the lens body 3, so that the top of the U-shaped block 18 is at the same height as the top of the observation whiteboard 6, thereby facilitating the use of a vernier caliper to measure the focal length. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lens focal length detector for a pulsed material defect detection device, comprising a support base (1), a movable base (2), a lens body (3), an aperture (4), a collimator (5) and an observation whiteboard (6), characterized in that: The top of the support seat (1) is slidably connected to a movable seat (2), a lens body (3) is provided on the top of the movable seat (2), an aperture (4) is provided on the outside of the lens body (3), a parallel light tube (5) is provided on the outside of the aperture (4) away from the lens body (3), and an observation whiteboard (6) is provided on the outside of the lens body (3) away from the aperture (4); A card slot (7) is provided on the surface of the movable seat (2) close to the lens body (3); a connecting block (8) is connected to the bottom of the lens body (3); an inner wall of the connecting block (8) is connected to a limiting block (9); a spring (10) is connected inside the connecting block (8); one end of the spring (10) is connected to a card slot (11); and a limiting slot (12) is provided on a side of the card slot (11) close to the limiting block (9).

2. The lens focal length detector for a pulsed material defect detection device according to claim 1, characterized in that: A sliding structure is formed between the limiting block (9) and the clamping block (11) via a limiting groove (12).

3. The lens focal length detector for a pulsed material defect detection device according to claim 1, characterized in that: The interior of the connecting block (8) is provided with a docking groove that matches the size of the top of the movable seat (2).

4. The lens focal length detector for a pulsed material defect detection device according to claim 1, characterized in that: The bottom of the support seat (1) is connected to a plug-in block (13), the interior of the plug-in block (13) is connected to a rubber block (14), and the bottom of the plug-in block (13) is provided with a counterweight base (15).

5. The lens focal length detector for a pulsed material defect detection device according to claim 4, characterized in that: A fixing groove (16) is provided on the surface of the counterweight base (15), and an anti-slip pad (17) is bonded to the bottom of the counterweight base (15).

6. The lens focal length detector for a pulsed material defect detection device according to claim 1, characterized in that: The top of the lens body (3) is connected to a U-shaped block (18), and a plug-in board (19) is plugged into the interior of the U-shaped block (18).

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