A precision shooting mechanism for a detection device
By designing a precision imaging mechanism with a light shield and an anti-external force shield in the testing equipment, the problems of ambient light interference and lens contamination are solved, ensuring image stability and lens protection, and extending service life.
Patent Information
- Application Number
- CN202522117049.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-18
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2036-09-18
AI Technical Summary
The testing equipment is prone to missing detections under ambient light interference, and the lens is easily contaminated by dust, water stains, and oil, resulting in blurred images and affecting the accuracy of the test.
A precision shooting mechanism was designed, which includes a positioning base, a shooting frame, a lens hood, and an anti-external force shield. The lens hood forms a closed dark box environment, allowing only a preset light source to enter the lens and preventing dust and oil contamination. At the same time, the anti-external force shield provides physical protection.
It achieves stable and consistent images under ambient light interference, prevents lens contamination, and extends the service life of the shooting mechanism.
Smart Images
Figure CN224947625U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precision imaging mechanism technology, and in particular to a precision imaging mechanism for testing equipment. Background Technology
[0002] The "precision imaging mechanism" of the inspection equipment is usually referred to as the imaging unit in the machine vision system. It is the "eye" of the entire system. Its core objective is to capture images of the object being inspected stably, clearly, and accurately under specific conditions so that subsequent software algorithms can perform reliable analysis and judgment. The main types are CCD and CMOS. Currently, CMOS has become the mainstream because of its high speed, low cost, and low power consumption. It is suitable for marking and contour detection on non-reflective object surfaces. The light passes through a beam splitter and is parallel to the camera's optical axis, making it particularly suitable for detecting scratches and dents on flat, reflective surfaces (such as metal and glass).
[0003] The workshop overhead lights illuminate the lens surface from the side, making the overall image appear white and gray. The difference between the feature to be detected and the background becomes smaller, and the software cannot accurately identify it. Once there is ambient light interference, the weak contrast of the scratch itself will be drowned out by noise, and the system will frequently miss detections. Dust, water stains, and oil stains adhere to the lens, and the captured image will be blurry and have dark spots, requiring frequent shutdowns to clean the lens. The cleaning itself may also scratch the lens. Summary of the Invention
[0004] The purpose of this invention is to provide a precision imaging mechanism for detection equipment, in order to solve the problems mentioned in the background art, such as the weak contrast of the scratch itself being drowned out by noise when there is ambient light interference, resulting in frequent missed detections by the system, and the blurry images and dark spots caused by dust, water stains, and oil stains adhering to the lens.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision shooting mechanism for a testing device, comprising a positioning seat and a shooting frame, wherein the shooting frame is installed inside the positioning seat, a plurality of limiting bolts are provided on one side of the positioning seat, a shooting cover is provided at one end of the shooting frame, a circular sleeve is fitted at one end of the shooting cover, vertical blocks are fixedly installed on both sides of the circular sleeve, a light shield is provided at the bottom of the shooting cover, a fixing cylinder is fixedly installed on both sides of the light shield, two support shafts are provided at the bottom of the light shield, and an anti-external force cover is fitted at one end of each of the two support shafts.
[0006] As a preferred technical solution of this utility model, the circular sleeve is fixedly sleeved on one end of the shooting cover, and a second limiting hole is opened on one end of each of the two fixed cylinders.
[0007] As a preferred technical solution of this utility model, a first limiting hole is provided on one side of each of the two vertical blocks, and a limiting strip is provided on one side of each of the two vertical blocks.
[0008] As a preferred technical solution of this utility model, one end of each of the two limiting strips is respectively connected to the internal threads of the two first limiting holes and the two second limiting holes.
[0009] As a preferred embodiment of this utility model, the two limiting strips are positioned correspondingly.
[0010] As a preferred technical solution of this utility model, the top of the shooting frame is connected with a wire, and the two anti-external force covers are respectively movably sleeved on one end of the two support shafts.
[0011] As a preferred embodiment of this utility model, both of the external force resisting covers are semi-circular in shape.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention incorporates a circular sleeve, a lens hood, fixed cylinders, a support shaft, and an anti-stress cover. The lens hood is moved to the bottom of the shooting cover, with two fixed cylinders positioned close to two vertical blocks. The lens hood is made of matte black acrylic, making it easy to cut, bend, and glue. By forming a closed darkroom environment, the lens hood ensures that only the preset lighting system light source can enter the lens, thus obtaining a stable and consistent image. It also prevents dust, water droplets, and oil from directly splashing onto the expensive front lens element, providing initial protection. The anti-stress cover can rotate at one end of the support shaft, allowing adjustment of the blocking area of the lens hood by the two anti-stress covers. Its main function is physical protection, extending the service life of the shooting mechanism.
[0013] This utility model incorporates a vertical block, a first limiting hole, a limiting strip, and a second limiting hole. After the light shield is installed at the bottom of the shooting cover, one end of each of the two limiting strips is sequentially embedded into the first and second limiting holes, and the three are connected by threads. This allows for the limiting and fixing of the vertical block and the light shield. The anti-external force cover is made of aluminum profile, which has high strength, light weight, and is easy to assemble and modify. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a bottom view of the structure of this utility model; Figure 3 This is a partial bottom view of the structure of this utility model; Figure 4 For the present utility model Figure 3Enlarged view of point A in the middle.
[0015] In the diagram: 1. Positioning seat; 2. Shooting frame; 3. Limiting bolt; 4. Shooting cover; 5. Circular sleeve; 6. Vertical block; 7. First limiting hole; 8. Sunshade; 9. Fixing cylinder; 10. Limiting strip; 11. Support shaft; 12. External force resistant cover; 13. Second limiting hole; 14. Wire. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-4 This utility model provides a technical solution for a precision imaging mechanism for detection equipment: Example
[0018] like Figure 1-3 As shown, a precision imaging mechanism for a testing device includes a positioning base 1 and an imaging frame 2. The imaging frame 2 is installed inside the positioning base 1. Multiple limiting bolts 3 are provided on one side of the positioning base 1. An imaging cover 4 is provided at one end of the imaging frame 2. A circular sleeve 5 is fitted onto one end of the imaging cover 4. Vertical blocks 6 are fixedly installed on both sides of the circular sleeve 5. A light shield 8 is provided at the bottom of the imaging cover 4. Fixed cylinders 9 are fixedly installed on both sides of the light shield 8. Two support shafts 11 are provided at the bottom of the light shield 8. An anti-external force cover 12 is fitted onto one end of each of the two support shafts 11. The two vertical blocks... Each of the two vertical blocks 6 has a first limiting hole 7 on one side, and each of the two vertical blocks 6 has a limiting strip 10 on one side. The light shield 8 forms a closed dark box environment, ensuring that only the preset lighting system light source can enter the lens, thereby obtaining a stable and consistent image. At the same time, it can prevent dust, water droplets and oil stains from splashing directly onto the expensive front lens element, playing a preliminary protective role. The anti-external force cover 12 can rotate at one end of the support shaft 11, thereby adjusting the blocking area of the two anti-external force covers 12 on the light shield 8. Its main function is physical protection, which extends the service life of the shooting mechanism. Example
[0019] Based on Example 1, such as Figure 1 and Figure 4As shown, one end of each of the two limiting strips 10 is threadedly connected to the inside of the two first limiting holes 7 and the two second limiting holes 13, respectively. A wire 14 is inserted and connected to the top of the shooting frame 2. The two anti-external force covers 12 are movably sleeved on one end of each of the two support shafts 11. After the light shield 8 is installed on the bottom of the shooting cover 4 by setting the vertical block 6, the first limiting hole 7, the limiting strips 10 and the second limiting hole 13, one end of each of the two limiting strips 10 is sequentially embedded into the inside of the first limiting hole 7 and the second limiting hole 13. The three are threaded together, so that the vertical block 6 and the light shield 8 can be limited and fixed. The anti-external force cover 12 is made of aluminum profile. The aluminum profile frame structure has high strength, light weight and is easy to assemble and modify.
[0020] Working principle: The "precision imaging mechanism" of the detection equipment is usually referred to as the imaging unit in a machine vision system. It is the "eye" of the entire system, and its core objective is to stably, clearly, and accurately capture images of the object being detected under specific conditions, so that subsequent software algorithms can reliably analyze and judge it. It mainly uses a CCD. CMOS is currently the mainstream due to its high speed, low cost, and low power consumption. It is suitable for marking and contour detection on non-reflective surfaces. The light passes through a beam splitter parallel to the camera's optical axis, making it particularly suitable for detecting scratches and dents on flat, reflective surfaces such as metal and glass. However, workshop overhead lights can illuminate the lens surface from the side, resulting in a generally white and gray image. The difference between the feature to be detected and the background becomes smaller, making it difficult for the software to accurately identify. If there is ambient light interference, the weak contrast of the scratch itself will be drowned out by noise, leading to frequent missed detections by the system. Dust, water stains, and oil stains adhering to the lens will result in blurry images with dark spots, requiring frequent shutdowns to clean the lens. Cleaning itself may also scratch the lens. The lens hood 8 is moved to the bottom of the shooting cover 4, with the two fixing cylinders 9 close to the two vertical blocks 6. The lens hood 8 is made of matte black material. Acrylic is easy to cut, bend, and bond. The light hood 8 forms a closed dark box environment, ensuring that only the preset lighting system light source can enter the lens, thereby obtaining a stable and consistent image. At the same time, it can prevent dust, water droplets, and oil stains from splashing directly onto the expensive front lens element, providing initial protection. The anti-force cover 12 can rotate at one end of the support shaft 11, thereby adjusting the blocking area of the two anti-force covers 12 on the light hood 8. Its main function is physical protection, extending the service life of the shooting mechanism. After the light hood 8 is installed at the bottom of the shooting cover 4, one end of the two limiting strips 10 is successively embedded into the first limiting hole 7 and the second limiting hole 13. The three are threaded together, thereby limiting and fixing the vertical block 6 and the light hood 8. The anti-force cover 12 is made of aluminum profile. The aluminum profile frame structure has high strength, light weight, and is easy to assemble and modify.
[0021] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0022] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A precision imaging mechanism for a testing device, comprising a positioning base (1) and an imaging frame (2), wherein the imaging frame (2) is installed inside the positioning base (1), characterized in that: The positioning seat (1) is provided with multiple limiting bolts (3) on one side. The shooting frame (2) is provided with a shooting cover (4) at one end. A round sleeve (5) is fitted on one end of the shooting cover (4). Vertical blocks (6) are fixedly installed on both sides of the round sleeve (5). A light shield (8) is provided at the bottom of the shooting cover (4). A fixing cylinder (9) is fixedly installed on both sides of the light shield (8). Two support shafts (11) are provided at the bottom of the light shield (8). An anti-external force cover (12) is fitted on one end of each of the two support shafts (11).
2. The precision imaging mechanism for a detection device according to claim 1, characterized in that: The circular sleeve (5) is fixedly sleeved on one end of the shooting cover (4), and a second limiting hole (13) is opened on one end of each of the two fixed cylinders (9).
3. The precision imaging mechanism for a detection device according to claim 2, characterized in that: Each of the two vertical blocks (6) has a first limiting hole (7) on one side and a limiting strip (10) on one side.
4. The precision imaging mechanism for a detection device according to claim 3, characterized in that: One end of each of the two limiting strips (10) is connected to the internal threads of the two first limiting holes (7) and the two second limiting holes (13), respectively.
5. A precision imaging mechanism for a detection device according to claim 4, characterized in that: The two limit bars (10) are positioned correspondingly.
6. The precision imaging mechanism for a detection device according to claim 1, characterized in that: The top of the shooting frame (2) is connected with a wire (14), and the two anti-external force covers (12) are respectively movably sleeved with one end of the two support shafts (11).
7. A precision imaging mechanism for a detection device according to claim 6, characterized in that: Both of the aforementioned anti-external force shields (12) are set in a semi-circular shape.