Light source detection device for mechanical parts

Abstract

The invention relates to the technical field of part measurement, and discloses a mechanical part light source detection device which comprises a fixed table, a support and a camera module, the support is fixedly arranged on the fixed table, the camera module is assembled at the top end of the support, a mounting plate is coaxially and fixedly assembled on the camera module, and an annular lamp strip is coaxially and fixedly mounted on the mounting plate. A light gathering cover is arranged below the lamp strip, a sealed liquid cavity filled with light-transmitting liquid is formed in the light gathering cover, air cavities are formed in the upper portion and the lower portion of the liquid cavity, flexible and transparent diaphragms are arranged between the air cavities and the liquid cavity, and a plurality of air pressure pipes for controlling air pressure in the air cavities are installed on the air cavities. The irradiation range of the light source of the lamp strip is changed by adjusting the pressure difference between the air cavity and the liquid cavity, when the light source is insufficient, the pressure of the air cavity is increased to form a biconcave lens, light rays are diverged, and the irradiation range is expanded; when the light source is too large or insufficient in brightness, the pressure of the air cavity is reduced to form a biconvex lens, light is focused, and the illumination intensity and resolution are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of parts measurement, in particular to a light source detection device for mechanical parts. Background Art

[0002] The mechanical parts light source detection device is a comprehensive detection equipment that integrates optical, electronic and mechanical technologies. It is mainly used for accurate detection and measurement of mechanical parts. The device illuminates the mechanical parts through a specific light source, and uses optical principles such as light propagation, reflection, transmission and refraction, combined with optical sensors and signal processing components, to illuminate, image and process the detected parts, thereby obtaining key information such as the size, shape, defects, position and direction of the parts. For example, detect the verticality of the screw installation and whether it is missing, and detect the placement and direction of the parts. The mechanical parts light source detection device is widely used in the fields of automobile manufacturing, aerospace, electronics, precision machinery, etc., and is used to accurately detect and measure the size, shape, defects, position and direction of parts.

[0003] However, during the use of the existing mechanical parts light source detection device, the irradiation range of the light source can only be adjusted by controlling the distance or light intensity between the device and the detected part. Adjusting the light source distance will change the propagation path of the light, thereby affecting the clarity and accuracy of the imaging, and different light intensities will cause the exposure parameters of the image sensor to be adjusted, thereby affecting the imaging effect. When the light source distance or intensity changes, the focus parameters of the camera also need to be adjusted accordingly to ensure that the image is clear. If the focus parameters are not adjusted in time, the image may be blurred or out of focus. If the image is not clear, the detection device may not be able to accurately identify the key information such as the size, shape, and defects of the part. In addition, the traditional camera detection mode usually only takes photos for detection of the upper shape of the part, and then analyzes the data by computer to determine the shape size. However, if the transformer shape of the photo is blocked or the chamfered structure, it will affect the shape detection of the disk or ring parts, resulting in size deviations. The existing camera detection is a single detection, which can only be reviewed by manual detection in the subsequent process. Not only does it require one-to-one correspondence between parts, but it also requires manual input of process data. The process is cumbersome and inefficient, which increases the overall production cost of the parts. At the same time, the traditional measurement structure usually directly takes a picture of the entire disk and then determines its structure, which makes the computer analysis data larger. At the same time, due to the reflection of parts or workbenches, the disk or ring workpiece often forms excessive exposure in the middle, which not only consumes more energy, but also affects the photosensitivity analysis of the detection camera, making the photo data input by the detection camera into the computer inaccurate. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a mechanical parts light source detection device, which has the advantage of being able to adjust the light source range without adjusting the distance between the device and the mechanical part to be detected. This solves the problem that the existing mechanical parts light source detection device can only adjust the light source range by controlling the distance between the device and the detected part or the light intensity when the light source illumination range needs to be adjusted.

[0006] (II) Technical solution

[0007] In order to achieve the purpose of adjusting the range of the light source without adjusting the distance between the device and the mechanical part to be tested, the present invention provides the following technical solutions: a mechanical part light source detection device, comprising a fixed table, a bracket, and a camera module, wherein a ring-shaped or disc-shaped part to be tested is placed on the fixed table, an L-shaped bracket is fixedly provided on the fixed table, the camera module is assembled on the top of the bracket, a mounting plate is coaxially fixedly provided on the camera module, an annular light strip is coaxially fixedly provided on the mounting plate, a condenser is provided below the light strip, a liquid cavity filled with a light-transmitting liquid and sealed is provided in the condenser, and the liquid cavity A flexible expandable or contractible liquid capsule is fixedly connected to the top, the liquid cavity is communicated with the liquid capsule, and the liquid capsule is filled with a light-transmitting liquid. Air cavities are arranged above and below the liquid cavity, a flexible and transparent diaphragm is arranged between the air cavity and the liquid cavity, and a plurality of air pressure tubes for controlling the air pressure in the air cavity are installed on the air cavity; the light irradiated by the annular light strip forms annular detection light perpendicular to its surface on the fixed platform; when the air pressure in the air cavity changes, the diaphragm becomes convex or concave, thereby changing the shape of the liquid in the liquid cavity, and when the light source passes through the liquid cavity, the irradiation range of the light source changes with the convexity or concaveness of the diaphragm.

[0008] Preferably, the irradiation direction of the light source emitted by the light strip is perpendicular to the fixing platform.

[0009] Preferably, the diaphragm and the liquid capsule are made of flexible materials, and the thickness of the diaphragm at the junction with the focusing cover is greater than the thickness of the center of the diaphragm.

[0010] Preferably, the outside of the condenser is also wrapped with a support frame, and the support frame is fixedly mounted on the mounting plate.

[0011] Preferably, the condenser is made of a transparent material, and a reflective layer is provided between the condenser and the support frame, and the reflective layer is coated with a reflective material.

[0012] Preferably, the air pressure tubes located at the upper and lower sides of the liquid chamber can be activated respectively at the upper side or the lower side.

[0013] Preferably, the air cavity is only arranged on the upper side of the liquid cavity, and a transparent plate is arranged at the bottom of the liquid cavity.

[0014] Preferably, a light detection module in the shape of a ring is coaxially arranged in the fixing platform, and a plurality of photovoltaic panels are equidistantly arranged on the light detection module along its circumferential direction, and the photovoltaic panels are strip-shaped. The upper surface of the fixing platform is made of light-transmitting material.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a mechanical parts light source detection device having the following

[0017] Beneficial effects:

[0018] 1. The mechanical parts light source detection device, through the coordinated use of the air cavity structure and the liquid cavity structure, can change the illumination range of the light belt ring light source when the ring light source generated by the light belt cannot completely illuminate the ring-shaped or disk-shaped mechanical parts located on the fixed platform or the illumination range of the ring light source is much larger than the size of the mechanical parts; when the light belt light source cannot completely illuminate the mechanical parts, the air pressure tube is adjusted to inflate the air cavity so that the pressure in the air cavity gradually exceeds the pressure in the liquid cavity. The pressure in the air cavity will be transmitted downward through the flexible diaphragm, exerting pressure on the liquid in the liquid cavity. This pressure difference will cause the diaphragm to concave into the liquid cavity, forming a double concave lens structure. Due to the shape of the lens, the light will be refracted and Diverge outward, so that the light passing through the lens spreads to a larger area when it is emitted. The divergent light source will spread to a larger area, so as to cover a wider detection range, which can ensure that the entire part is fully illuminated, and the divergent light source can illuminate the mechanical parts from multiple angles, thereby reducing the shadow effect caused by the single directionality of the light and avoiding the detection blind area caused by the shadow. At the same time, the divergent light source provides more uniform lighting, thereby improving the contrast and clarity of the detection image. The divergent light can also make the surface details of the mechanical parts more prominent, especially when there are subtle bumps or textures on the surface. The divergent light source can provide multi-angle illumination. Make these details more obvious; and when the illumination range of the light strip light source is much larger than the size of the mechanical parts or the brightness of the light strip light source is insufficient, adjust the air pressure tube to extract the gas in the air cavity, so that the pressure in the air cavity is gradually lower than the pressure in the liquid cavity. When the pressure in the air cavity is lower than the pressure in the liquid cavity, the diaphragm will expand toward the low pressure side under the action of the pressure difference, and bulge outward toward the air cavity side, forming a double convex lens structure. The double convex lens has optical properties and can focus the light source passing through into a smaller area. In this way, the light source will be more concentrated. When the light source is focused, the light beam irradiated on the mechanical parts will be more concentrated, so that the details and features of the parts can be more clearly displayed. The concentrated light source can provide higher resolution. The focused light source can concentrate too much light in a smaller area, thereby increasing the light intensity in that area. This can enhance the brightness of the surface of mechanical parts and enable the camera module to better capture images, especially in low light conditions. At the same time, the concentrated light beam can reduce the interference of ambient light and reduce the noise caused by scattering and reflection. This can improve the quality and stability of the detected image, thereby improving the accuracy of the detection. The focused light source can utilize light energy more effectively and reduce unnecessary energy waste. Under the same light source power, higher lighting effects can be achieved by focusing, thereby improving the energy efficiency of the detection device.

[0019] 2. The mechanical parts light source detection device uses an air cavity structure and a liquid cavity structure in combination. When the air cavity is only arranged on the upper side of the liquid cavity, compared with the structure in which the air cavity is arranged on the upper and lower sides, this design reduces the number of air cavities. Because the number of air cavities is reduced, the demand for related air pressure tubes, pipelines and control systems is also reduced accordingly, making the volume of the entire device relatively smaller and more compact, significantly reducing material and manufacturing costs. Although the structure is simplified, the device can still achieve the conversion between the plano-concave lens and the plano-convex lens by controlling the air cavity pressure on the upper side, thereby adjusting the divergence and focusing effects of the light source. Although the adjustment effect of the single-sided air cavity is not as strong as that of the upper and lower air cavities, In practical applications, the impact of this difference on the detection effect is not obvious. In most practical applications, the plano-concave lens can still provide sufficient divergence effect to cover the detection range and reduce the shadow effect. The divergence effect of the plano-concave lens is about 70%-80% of that of the bi-concave lens. The plano-convex lens can provide sufficient focusing effect to improve the detection resolution and light intensity. The focusing effect of the plano-convex lens is about 70%-80% of that of the bi-convex lens. This means that while simplifying the structure and reducing costs, the use effect of the device is only affected by 20%-30%, and can still meet the light source detection needs of most mechanical parts.

[0020] 3. The mechanical parts light source detection device is used in conjunction with an air cavity structure and an air pressure tube structure. During use, since the air cavity is located below the light strip, the air in the air cavity can take away the heat by convection. When the air pressure tube is operating, the air in the air cavity will flow. This flow can effectively take away the heat generated by the light strip from the air cavity to avoid heat accumulation. This can not only protect the light strip, but also prevent damage to other components due to high temperature.

[0021] 4. The mechanical parts light source detection device, through the coordinated use of the light strip structure and the fixed platform structure, the light irradiated by the annular light strip forms an annular detection light perpendicular to the surface of the fixed platform. When an annular or disc-shaped mechanical part is placed on the fixed platform, the annular light only irradiates the detected area. This annular detection light has a high degree of matching with the mechanical parts, which can avoid the shadow and uneven lighting problems that may occur under the irradiation of traditional light sources and improve the quality of the detected image. At the same time, the area without parts on the fixed platform is not illuminated, which can reduce the amount of data for subsequent computer analysis and improve the detection efficiency and accuracy. The annular light source only irradiates the detected area, that is, the light source is directly concentrated on the surface of the mechanical parts instead of diffusing to the unoccupied part of the fixed platform. This design makes full use of the light source energy and reduces the waste of light in non-detection areas, thereby reducing energy consumption. Since the light is concentrated in the detected area, the irrelevant information contained in the detection image (such as the surface of the fixed platform) is significantly reduced, and the camera module can obtain clearer and higher-contrast images, reducing the burden on the computer during image processing and analysis, and reducing the amount of data to be processed, which makes subsequent image processing and analysis easier, reduces the amount of calculation and time, and improves detection efficiency.

[0022] 5. The mechanical parts light source detection device uses a light belt structure, a fixed platform structure, and a photovoltaic panel structure in combination. When detecting an annular mechanical part on the fixed platform, the light source irradiated by the light belt will be blocked by the annular part, and the unblocked light will pass through the light-transmitting material on the upper surface of the fixed platform to form a shadow area on the photovoltaic panel. Shadows of different sizes will cause the photovoltaic panel to generate different currents. By measuring these current differences, the system can calculate the size of the annular part. When the part blocks the light, the photovoltaic panel receives less light and the generated current will also decrease accordingly. By comparing these current data, the system can determine the shadow area of ​​the part, thereby calculating the part. The size of the photovoltaic panels is calculated, and then the current generated by the photovoltaic panels at different positions is compared with the parameters detected by the camera module to form a double detection, thereby improving the detection accuracy of the equipment; each photovoltaic panel corresponds to a part feature point, and when the detection accuracy needs to be adjusted, it can be changed by adjusting the number of photovoltaic panels. The device reduces the steps that require manual review in traditional photographic detection through the assistance of photovoltaic panels; and compared with traditional photosensitive panels, the photovoltaic panels used have lower costs and the detection effect meets the detection requirements. Moreover, since multiple photovoltaic panels are used for detection, when a single photovoltaic panel fails, it is easier to replace it later than the photosensitive panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the mechanical parts light source detection device in the present invention;

[0024] Figure 2It is a structural front view of the light source detection device for mechanical parts in the present invention;

[0025] Figure 3 It is a structural side view of the light source detection device for mechanical parts in the present invention;

[0026] Figure 4 It is a top view of the structure of the light source detection device for mechanical parts in the present invention;

[0027] Figure 5 It is a structural AA cross-sectional view of the mechanical parts light source detection device in the present invention;

[0028] Figure 6 It is a bottom view schematic diagram of the three-dimensional structure of the mechanical parts light source detection device in the present invention;

[0029] Figure 7 The local structural details of the condenser of the mechanical parts light source detection device in the present invention;

[0030] Figure 8 It is a schematic diagram of the liquid cavity structure of the mechanical parts light source detection device in the present invention when it is a double convex lens;

[0031] Fig. 9 It is a schematic diagram of the liquid cavity structure of the mechanical parts light source detection device in the present invention when it is a biconcave lens;

[0032] Fig.10 It is a schematic diagram of the liquid chamber structure of the mechanical parts light source detection device in the second embodiment of the present invention when it is a plano-convex lens;

[0033] Fig.11 It is a schematic diagram of the liquid chamber structure of the mechanical parts light source detection device in the second embodiment of the present invention when it is a plano-concave lens;

[0034] Fig.12 A is a detailed structural diagram of a photovoltaic panel of a light source detection device for mechanical parts in the present invention;

[0035] Fig.13 This is a detailed diagram B of the photovoltaic panel structure of the mechanical parts light source detection device in the present invention.

[0036] In the figure: 1-fixed platform, 2-bracket, 3-camera module, 4-mounting plate, 5-light strip, 60-focusing cover, 61-liquid cavity, 62-air cavity, 63-diaphragm, 7-air pressure tube, 8-liquid capsule, 9-support frame, 10-reflective layer, 11-transparent plate, 12-photovoltaic panel. DETAILED DESCRIPTION

[0037] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7A mechanical parts light source detection device includes a fixing table 1, a bracket 2, and a camera module 3. The fixing table 1 is fixedly provided with an L-shaped bracket 2, and the bracket 2 ensures the precise positioning and fixing of the camera module 3 and the light strip 5. The position of each component is ensured to be stable during the detection process, and the detection result will not be affected by vibration or other external factors. The camera module 3 is assembled on the top of the bracket 2, and the camera module 3 is installed on the top of the bracket 2 to ensure that it is aligned with the detected part to obtain the best detection angle. Ensure that the camera module 3 can capture a clear and complete image of the part for accurate detection and analysis. The camera module 3 is coaxially fixed with a mounting plate 4, and the coaxial fixation can ensure that the center position of the camera module 3 is consistent with that of the mounting plate 4 to avoid offset. Provide a stable platform for fixing other components, such as the light strip 5 and the condenser 60, to ensure the coaxiality and alignment of the entire optical system. The mounting plate 4 is coaxially fixed with an annular light strip 5, and the annular light strip 5 provides uniform 360-degree lighting to avoid the generation of shadows and light spots. Ensure that the inspected parts can be evenly illuminated from all angles, improve imaging quality and detection accuracy. A condenser 60 is provided below the light strip 5, which can control and guide the propagation path of light, increase light concentration and lighting effect. Enhance the focusing effect of the light source, so that the light is more concentrated on the inspected parts, and improve the contrast and clarity of the image. A liquid cavity 61 filled with a light-transmitting liquid and sealed is provided in the condenser 60. The light-transmitting liquid can change the refraction and scattering characteristics of light by adjusting its shape, thereby flexibly adjusting the illumination range and light beam direction. The flexible adjustment of the light source illumination range is achieved through the change in the morphology of the liquid, which adapts to the detection requirements of parts of different sizes and shapes, and improves the flexibility and adaptability of the detection system. Among them, the liquid uses silicone oil or carbon fluoride liquid with high transparency, relatively stable refractive index, low absorption of visible light in the specific wavelength range of the light source of the light strip 5, and maintains its optical and physical properties for a long time. A flexible expandable or contractible liquid capsule 8 is also fixedly connected to the liquid cavity 61. The purpose of the design of the flexible liquid capsule 8 is to provide a buffer and adjustment space when the pressure inside the liquid cavity 61 changes. The expansion or contraction of the liquid capsule 8 can absorb or release liquid, thereby ensuring that the volume of the liquid in the liquid cavity 61 can be flexibly adjusted to meet different optical requirements. This can prevent structural damage or liquid leakage caused by excessively high or low pressure inside the liquid cavity 61. The liquid cavity 61 is interconnected with the liquid capsule 8, and the connection design ensures that the liquid between the liquid cavity 61 and the liquid capsule 8 can flow freely, thereby achieving pressure balance. When the liquid inside the liquid cavity 61 needs to adjust the volume due to the deformation of the diaphragm 63, the liquid can flow into or out of the liquid capsule 8, thereby achieving dynamic adjustment of the volume of the liquid cavity 61. This design can effectively adjust the divergence and focusing effects of the light source. And the liquid capsule 8 is filled with a light-transmitting liquid, and the liquid capsule 8 is filled with a light-transmitting liquid to ensure that the optical properties in the liquid cavity 61 are not affected during the liquid flow and volume adjustment process.The light-transmitting liquid can maintain the transmittance and optical properties of the light, thereby ensuring the accuracy and consistency of the light source detection. The liquid cavity 61 is provided with air cavities 62 above and below, and the upper and lower air cavities 62 are designed to effectively adjust the shape and volume of the liquid in the liquid cavity 61 under different conditions. By controlling the air pressure in the air cavity 62, the upper and lower deformation of the diaphragm 63 can be achieved, thereby forming different lens structures such as double convex lenses and double concave lenses. This makes the device more flexible and adjustable. A flexible and transparent diaphragm 63 is provided between the air cavity 62 and the liquid cavity 61. The design of the flexible and transparent diaphragm 63 allows the pressure transmission between the air cavity 62 and the liquid cavity 61 while maintaining the sealing and optical transparency of the liquid. The flexibility of the diaphragm 63 enables it to deform according to the pressure changes in the air cavity 62, thereby adjusting the shape of the liquid in the liquid cavity 61 to form the desired lens effect. The transparent diaphragm 63 ensures that the light will not be significantly affected when passing through the diaphragm 63, thereby maintaining the quality of the light source. Several air pressure tubes 7 for controlling the air pressure in the air cavity 62 are installed on the air cavity 62. The air pressure tubes 7 are connected to the air pump structure. The design of the air pressure tubes 7 allows the air pressure in the air cavity 62 to be precisely controlled, thereby achieving precise adjustment of the shape of the liquid in the diaphragm 63 and the liquid cavity 61. By adjusting the air pressure tubes 7, different lens effects such as divergence or focusing can be achieved to meet different light source detection requirements. The design of multiple air pressure tubes 7 can provide higher control accuracy and flexibility, ensuring that the device can adapt to various complex detection scenarios; please refer to. Figure 7 , Figure 8 , Fig. 9 When the air pressure in the air cavity 62 changes, the diaphragm 63 becomes convex or concave, thereby changing the shape of the liquid in the liquid cavity 61. When the light source emitted by the light strip 5 passes through the liquid cavity 61, the irradiation range of the light source changes. The direction of the irradiation range changes as shown in FIG. Figure 8 and Fig. 9As shown by the arrow in the middle. Among them, the light irradiated by the annular light strip 5 forms an annular detection light perpendicular to the surface of the fixed platform 1. Since the device forms an annular detection light on the surface of the fixed platform 1, when an annular or disc-shaped mechanical part is placed on the fixed platform 1, the annular light only illuminates the detected area. This annular detection light has a high degree of matching with the mechanical parts, which can avoid the shadow and uneven lighting problems that may occur under the illumination of traditional light sources, improve the quality of the detected image, and at the same time, the area without parts on the fixed platform 1 is not illuminated, which can reduce the amount of data for subsequent computer analysis and improve the detection efficiency and accuracy. The annular light source only illuminates the detected area, that is, the light source is directly concentrated on the surface of the mechanical parts, rather than spreading to the unoccupied part of the fixed platform 1. This design makes full use of the energy of the light source, reduces the waste of light in the non-detection area, and thus reduces energy consumption. Since the light is concentrated in the detected area, the irrelevant information contained in the detection image (such as the surface of the fixed platform 1) is significantly reduced, and the camera module 3 can obtain clearer and higher contrast images. It reduces the burden on the computer during image processing and analysis and reduces the amount of data that needs to be processed, which makes subsequent image processing and analysis easier, reduces the amount of calculation and time, and improves detection efficiency.

[0040] See also Fig.12 and Fig.13 , a light detection module in the shape of a ring is coaxially arranged in the fixed platform 1, and a number of photovoltaic panels 12 are equidistantly arranged on the light detection module along its circumferential direction. The photovoltaic panels 12 are in the shape of strips. The upper surface of the fixed platform 1 is made of light-transmitting material. When detecting the annular mechanical parts on the fixed platform 1, the light source irradiated by the light strip 5 will be blocked by the annular parts, and the unblocked light passes through the light-transmitting material on the upper surface of the fixed platform 1 to form a shadow area on the photovoltaic panel 12. Among them, shadows of different sizes will cause the photovoltaic panel 12 to generate different currents. By measuring these current differences, the system can calculate the size of the annular parts. When the parts block the light, the light received by the photovoltaic panel 12 is reduced, and the current generated will also be reduced accordingly. By comparing these current data, the system can determine the shadow area of ​​the part and thus calculate the size of the part. Then, by calculating the current generated by the photovoltaic panels 12 at different positions and comparing it with the parameters detected by the camera module, a double detection is formed, thereby improving the detection accuracy of the equipment. Each photovoltaic panel 12 corresponds to a part feature point. When the detection accuracy needs to be adjusted, it can be changed by adjusting the number of photovoltaic panels 12. This device reduces the steps that require manual review in traditional photography-based detection through the assistance of photovoltaic panels 12. Among them, the selection of the light-transmitting material of the fixed platform 1 mainly considers light transmittance and durability, so acrylic or glass or polyvinyl butyral laminated glass is used.

[0041] See also Figure 5 and Figure 7, the light source emitted by the light strip 5 is perpendicular to the fixing platform 1. Designing the light source to be perpendicular to the fixing platform 1 can ensure that the light directly illuminates the surface of the mechanical parts, reducing the deflection and reflection loss of the light. Vertical illumination can provide a more uniform and concentrated lighting effect, which helps to improve the clarity and contrast of the image, thereby more accurately detecting the features and details of the parts, such as Figure 5 and Figure 7As shown in the direction of the middle arrow. The diaphragm 63 and the liquid capsule 8 are made of flexible materials. The design of the diaphragm 63 and the liquid capsule 8 using flexible materials is to ensure that they can deform freely when the air pressure changes, thereby adjusting the volume and shape of the liquid in the liquid cavity 61. Flexible materials can withstand repeated pressure changes without damage or leakage. Flexible materials include silicone, polyurethane PU and ethylene-vinyl acetate copolymer EVA, etc. These materials have good elasticity, durability and light transmittance, which can ensure the stable performance of the diaphragm 63 and the liquid capsule 8 during use. And the thickness of the diaphragm 63 and the focus 60 is greater than the center thickness of the diaphragm 63. The thickness of the diaphragm 63 and the focus 60 is designed to be greater than the center thickness of the diaphragm 63, which can increase the strength and stability of the joint. At the same time, the thicker joint can provide better sealing performance and prevent liquid leakage. The outside of the focus 60 is also wrapped with a support frame 9. The design purpose of the support frame 9 is to enhance the structural strength and stability of the focus 60 and prevent the focus 60 from being deformed or broken due to external pressure or impact during use. The support frame 9 can effectively support and fix the condenser 60 to ensure that its shape and position are stable. The support frame 9 is fixedly mounted on the mounting plate 4. The support frame 9 is fixedly mounted on the mounting plate 4 to ensure the stability and consistency of the entire device. Fixed installation can prevent the device from being displaced or vibrated during operation. The condenser 60 is made of transparent material. The condenser 60 uses transparent material to ensure that light can pass through the condenser 60 without hindrance, thereby maintaining the quality and brightness of the light source. Transparent materials can reduce the refraction and reflection losses of light and ensure that light can be evenly irradiated on mechanical parts. Transparent materials use transparent acrylic PMMA, glass and polycarbonate PC, etc. These materials have good light transmittance, durability and impact resistance, and can ensure the stability and light transmittance of the condenser 60 during use. A reflective layer 10 is provided between the condenser 60 and the support frame 9. The purpose of providing the reflective layer 10 between the condenser 60 and the support frame 9 is to improve the utilization efficiency of the light source. The reflective layer 10 can reflect the scattered light back into the condenser 60, so that more light passes through the liquid cavity 61, reducing the loss of light, thereby improving the overall lighting effect. The reflective layer 10 is coated with a reflective material on the surface. The reflective layer 10 coated with a reflective material on the surface can significantly improve the reflective effect, thereby minimizing the loss of light. The reflective material can redirect the scattered light to ensure that the light is concentrated and evenly irradiated on the mechanical parts. The reflective material is made of aluminum foil, silver foil or silver-plated film, etc. These materials have high reflectivity and can effectively reflect light. Silver and aluminum are generally widely used in the design of the reflective layer 10 due to their high reflectivity and durability. The air pressure tube 7 located on the upper and lower sides of the liquid cavity 61 can be started separately according to the upper side or the lower side. When only the upper air pressure tube 7 is started and the lower air cavity 62 is kept at a constant pressure, the effect of the plano-concave lens or plano-convex lens of the second embodiment can be achieved.The air pressure tubes 7 on the upper and lower sides of the liquid cavity 61 can be activated separately to independently adjust the shape of the liquid cavity 61. When only the upper air pressure tube 7 is activated and the lower air cavity 62 maintains a constant pressure, the effect of a plano-concave lens or a plano-convex lens can be achieved. This is because when the upper air pressure tube 7 increases the pressure of the air cavity 62, the diaphragm 63 is concave downward to form a plano-concave lens; conversely, when the upper air pressure tube 7 reduces the pressure of the air cavity 62, the diaphragm 63 is convex upward to form a plano-convex lens. By controlling the upper air pressure tube 7, the divergence and focusing effects of the light source can be conveniently adjusted to meet different detection requirements.

[0042] Embodiment 2

[0043] See also Fig.10 and Fig.11 , the air cavity 62 is only arranged on the upper side of the liquid cavity 61. Arranging the air cavity 62 only on the upper side of the liquid cavity 61 can simplify the structure and reduce material and manufacturing costs. This design can effectively reduce the volume and weight of the device, while reducing the complexity of the air pressure tube 7, the pipeline and the control system. Although the adjustment effect of the single-sided air cavity 62 is not as strong as that of the double-sided air cavity 62, in most practical applications, the single-sided air cavity 62 can provide sufficient divergence and focusing effects to meet the detection requirements. And a transparent plate 11 is arranged at the bottom of the liquid cavity 61. The transparent plate 11 is made of transparent acrylic or glass. The transparent plate 11 is designed to be arranged at the bottom of the liquid cavity 61 to ensure that light can pass through the liquid cavity 61 smoothly, maintain the quality and brightness of the light source, and provide support for the liquid cavity 61.

[0044] Working principle: During use, when the light source of the light strip 5 cannot completely illuminate the mechanical parts located on the fixed platform 1 or the irradiation range of the light source is much larger than the size of the mechanical parts, it is necessary to change the irradiation range of the light source of the light strip 5. When the light source of the light strip 5 cannot completely illuminate the mechanical parts, adjust the air pressure tube 7 to inflate the air cavity 62 so that the pressure in the air cavity 62 gradually exceeds the pressure in the liquid cavity 61. When the pressure in the air cavity 62 is greater than the pressure in the liquid cavity 61, the pressure in the air cavity 62 will be transmitted downward through the flexible diaphragm 63, exerting pressure on the liquid in the liquid cavity 61. This pressure difference will cause the diaphragm 63 to concave into the liquid cavity 61. As the diaphragm 63 is concave, the effective volume of the liquid cavity 61 decreases, and the liquid in the liquid cavity 61 will be squeezed and partially flow into the connected flexible liquid capsule 8. The concave of the diaphragm 63 causes the shape of the liquid cavity 61 to change, forming a double concave lens structure. A double concave lens refers to a lens structure with both sides concave inward, which has the effect of diverging light in optics. When light passes through a biconcave lens, due to the shape of the lens, the light will be refracted and diverge outward. Specifically, the biconcave lens causes the light to be deflected outward from the center of the lens, so that the light passing through the lens spreads to a larger area when it is emitted. The divergent light source will spread to a larger area, thereby covering a wider detection range, ensuring that the entire part is fully illuminated, and the divergent light source can illuminate the mechanical parts from multiple angles, thereby reducing the shadow effect caused by the single directionality of the light and avoiding detection blind spots caused by shadows. At the same time, the divergent light source provides more uniform illumination, which can avoid local overbrightness or overdarkness, thereby improving the contrast and clarity of the detection image. The divergent light can also make the surface details of the mechanical parts more prominent. Especially when there are subtle bumps or textures on the surface, the divergent light source can provide multi-angle illumination to make these details more obvious. When the illumination range of the light source of the light strip 5 is much larger than the size of the mechanical parts or the brightness of the light source of the light strip 5 is insufficient, the air pressure tube 7 is adjusted to extract the gas in the air cavity 62 so that the pressure in the air cavity 62 is gradually less than the pressure in the liquid cavity 61. When the pressure in the air cavity 62 is less than the pressure in the liquid cavity 61, the diaphragm 63 will expand to the low pressure side under the action of the pressure difference, thereby bulging outward toward the air cavity 62. As the diaphragm 63 bulges outward, the effective volume of the liquid cavity 61 will increase, which causes the liquid in the liquid cavity 61 to be redistributed. A portion of the liquid will be drawn into the liquid cavity 61 from the liquid capsule 8 to fill the increased volume due to the bulge of the diaphragm 63. The bulge of the diaphragm 63 and the redistribution of the liquid change the shape of the liquid cavity 61 to form a biconvex lens structure. The biconvex lens has optical properties that can focus the light source passing through into a smaller area. In this way, the light source will be more concentrated. When the light source is focused, the light beam irradiated on the mechanical parts will be more concentrated, so that the details and features of the parts can be more clearly displayed. The concentrated light source can provide higher resolution and contrast. And the focused light source will concentrate too much light in a smaller area, thereby increasing the light intensity in that area.This can enhance the brightness of the surface of mechanical parts, so that the camera module 3 can better capture images, especially in low light conditions. At the same time, the concentrated light beam can reduce the interference of ambient light and reduce the noise caused by scattering and reflection. This can improve the quality and stability of the detected image, thereby improving the accuracy of the detection. The focused light source can more effectively utilize light energy and reduce unnecessary energy waste. Under the same light source power, a higher lighting effect can be achieved by focusing, thereby improving the energy efficiency of the detection device.

[0045] When the air cavity 62 of the device is only arranged on the upper side of the liquid cavity 61, and a transparent plate 11 is arranged at the bottom of the liquid cavity 61. Among them, the transparent plate 11 is made of transparent acrylic or glass. At this time, it is only necessary to control the air cavity 62 on the upper side of the liquid cavity 61 to adjust the illumination range of the light source of the light strip 5. When the light source of the light strip 5 cannot completely illuminate the mechanical parts, the air pressure tube 7 is adjusted to inflate the air cavity 62 so that the pressure in the air cavity 62 is gradually greater than the pressure in the liquid cavity 61. When the pressure in the air cavity 62 is greater than the pressure in the liquid cavity 61, the pressure in the air cavity 62 will be transmitted downward through the flexible diaphragm 63, exerting pressure on the liquid in the liquid cavity 61. This pressure difference will cause the diaphragm 63 to concave into the liquid cavity 61, forming a plano-concave lens structure. This plano-concave lens has a plane on one side and a concave surface on the other side. This structure has a certain characteristic of diverging light. When light enters the plano-concave lens from one side of the plane and passes through the concave side of the lens, it will be refracted and diffused outward. Although the divergence effect is not as strong as that of a biconcave lens, it can still increase the diffusion range of light. When the illumination range of the light source of the light strip 5 is much larger than the size of the mechanical parts or the brightness of the light source of the light strip 5 is insufficient, the air pressure tube 7 is adjusted to extract the gas in the air cavity 62, so that the pressure in the air cavity 62 is gradually less than the pressure in the liquid cavity 61. When the pressure in the air cavity 62 is less than the pressure in the liquid cavity 61, the diaphragm 63 will expand to the low pressure side under the action of the pressure difference, thereby convexing to the air cavity 62 side, forming a plano-convex lens structure. The plano-convex lens has the characteristic of focusing parallel light to one point. When the light enters the lens from the plane side and passes through the convex side, due to the convex shape of the lens, the light will converge to a focal point. Although the focusing effect is not as strong as that of the biconvex lens, it can still increase the focusing effect of the light. When the structure of the second embodiment is adopted, since the air cavity 62 is only arranged on the upper side of the liquid cavity 61, compared with the structure in which the air cavity 62 is arranged on the upper and lower sides, this design significantly reduces the number of air cavities 62. Because the number of air cavities 62 is reduced, the demand for related air pressure tubes 7, pipelines and control systems is also reduced accordingly, making the volume of the entire device relatively smaller and more compact, significantly reducing material and manufacturing costs. Although the structure is simplified, the device can still achieve the conversion between the plano-concave lens and the plano-convex lens by controlling the pressure of the upper air cavity 62, thereby adjusting the divergence and focusing effects of the light source. Although the adjustment effect of the single-sided air cavity 62 is not as strong as the adjustment effect of the upper and lower air cavities 62, in practical applications, the impact of this difference on the detection effect is limited. In most practical applications, the plano-concave lens can still provide sufficient divergence effect to cover the detection range and reduce the shadow effect. The divergence effect of the plano-concave lens is about 70%-80% relative to the divergence effect of the biconcave lens, while the plano-convex lens can provide sufficient focusing effect to improve the detection resolution and light intensity. The focusing effect of the plano-convex lens is about 70%-80% relative to the focusing effect of the biconvex lens. This means that while simplifying the structure and reducing costs, the use effect of the device is only affected by 20%-30%, and it can still meet the light source detection needs of most mechanical parts.

[0046] In addition, during use of the device, since the air cavity 62 is located below the light strip 5, the air in the air cavity 62 can remove heat by convection. When the air pressure tube 7 is in operation, the air in the air cavity 62 will flow, and this flow can effectively remove the heat generated by the light strip 5 from the air cavity 62 to avoid heat accumulation. This can not only protect the light strip 5, but also prevent other components from being damaged due to high temperature.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical parts light source detection device, comprising a fixed platform (1), a bracket (2), and a camera module (3), wherein the bracket (2) is fixedly arranged on the fixed platform (1), and the camera module (3) is assembled on the top of the bracket (2), characterized in that: The camera module (3) is coaxially fixedly provided with a mounting plate (4), and a ring-shaped light strip (5) is coaxially fixedly provided on the mounting plate (4). A condenser (60) is provided below the light strip (5), and a sealed liquid cavity (61) filled with a light-transmitting liquid is provided in the condenser (60). A flexible liquid capsule (8) is also fixedly connected to the liquid cavity (61), and the liquid cavity (61) is communicated with the liquid capsule (8). Air cavities (62) are provided above and below the liquid cavity (61), and the air cavity (62) is connected to the liquid cavity (61). ) is provided between the two parts, and a plurality of air pressure tubes (7) for controlling the air pressure in the air cavity (62) are installed on the air cavity (62); the light irradiated by the annular light strip (5) forms an annular detection light perpendicular to the surface of the fixing platform (1); when the air pressure in the air cavity (62) changes, the diaphragm (63) becomes convex or concave, thereby changing the shape of the liquid in the liquid cavity (61); when the light source passes through the liquid cavity (61), the irradiation range of the light source changes with the convexity or concaveness of the diaphragm (63).

2. A mechanical parts light source detection device according to claim 1, characterized in that: The irradiation direction of the light source emitted by the light strip (5) is perpendicular to the fixing platform (1).

3. A mechanical parts light source detection device according to claim 1, characterized in that: The diaphragm (63) and the liquid capsule (8) are made of flexible materials, and the thickness of the diaphragm (63) at the junction with the condenser (60) is greater than the thickness at the center of the diaphragm (63).

4. A mechanical parts light source detection device according to claim 1, characterized in that: A support frame (9) is also provided on the outside of the condenser cover (60), and the support frame (9) is fixedly mounted on the mounting plate (4).

5. A mechanical parts light source detection device according to claim 4, characterized in that: The condenser (60) is made of a transparent material, and a reflective layer (10) is provided between the condenser (60) and the support frame (9), and the reflective layer (10) is coated with a reflective material.

6. A mechanical parts light source detection device according to any one of claims 1 to 3, characterized in that: The air cavity (62) is only arranged on the upper side of the liquid cavity (61), and a transparent plate (11) is arranged at the bottom of the liquid cavity (61).

7. A mechanical parts light source detection device according to claim 1, characterized in that: A light detection module in the shape of a ring is coaxially arranged inside the fixing platform (1), and a plurality of photovoltaic panels (12) are equidistantly arranged along the circumference of the light detection module, wherein the photovoltaic panels (12) are strip-shaped, and the upper surface of the fixing platform (1) is made of light-transmitting material.

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