Multi-angle multi-light source mechanism and vision device

Abstract

This utility model relates to the field of visual inspection technology, specifically a multi-angle, multi-light source mechanism and visual device. The utility model features multiple detection light sources arranged vertically along a support frame. Each detection light source has a different illumination angle, which increases from bottom to top. This multi-layered design with different angles produces varying lighting effects. For the same product, it can simulate a dark field to detect chip surface defects, improving the detection of abnormal chips. Simultaneously, it can simulate a bright field to identify chip characters and reference points. Furthermore, each detection light source and illumination component can be independently illuminated, generating various combination methods. Compared to traditional square and ring light sources, it offers more angles, and users can customize the illumination position of the light sources to meet the diverse lighting needs of various product shapes.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology, and to a multi-angle, multi-light source mechanism and visual device. Background Technology

[0002] The inspection of existing workpieces is generally carried out through visual inspection. Typically, a light source device emits light onto the surface of the workpiece to be inspected, and an industrial camera is used to capture the light reflected from the surface to form an image.

[0003] Existing ring light source devices typically project light directly onto the product through the LED beads, resulting in significant light scattering. A large portion of the light fails to reach the product, leading to substantial differences in brightness across different areas. This fails to meet the demands of high-precision inspection. Furthermore, each light source is fixed at a preset angle, which cannot be adjusted as needed, impacting the ability to detect product defects. When different lighting angles are required or when simulating dark / bright fields for the same product, multiple ring light source devices must be used in combination, which not only occupies a large space but also increases inspection costs and energy consumption. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a multi-angle, multi-source light source mechanism and vision device that designs multiple light sources at different angles to produce different lighting effects, detects chip surface defects, improves the detection of abnormal chips, and meets the lighting needs of diverse and multi-shaped compatible products.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A multi-angle, multi-light source mechanism, comprising:

[0007] A light source holder with a light source opening on it;

[0008] A light source assembly is disposed on the light source frame. The light source assembly includes multiple light source components, which are evenly arranged around the upper edge of the light source opening. The light source components are used to illuminate the lighting position.

[0009] A lighting assembly is mounted on the light source frame. The lighting assembly includes multiple lighting components, which are evenly arranged around the lower edge of the light source opening. The lighting components are used to illuminate the lighting position.

[0010] The light source component includes a support frame, and multiple detection light sources are arranged sequentially in the vertical direction of the support frame. The illumination angle of each detection light source is different, and the illumination angle of each detection light source increases sequentially from bottom to top.

[0011] In one embodiment of this utility model, the support frame has multiple inclined grooves on both sides, and the two ends of the detection light source are fixed on the inclined grooves. The angle between the inclined groove and the light-emitting plane is the same as the light-emitting angle of the corresponding detection light source.

[0012] In one embodiment of this utility model, the lengths of adjacent inclined slots are not the same, and the length of each inclined slot decreases sequentially from bottom to top, so that the multiple detection light sources on the support frame are staggered.

[0013] In one embodiment of this utility model, the lighting component includes a fixing block and a test light source. The fixing block is disposed on the lower edge of the opening of the light source. An inclined surface is provided on the fixing block. The bottom of the inclined surface is connected to a support plate. The support plate and the inclined surface form an installation groove. The test light source is disposed on the installation groove.

[0014] In one embodiment of the present invention, the upper cover of the light source holder is provided with a housing, the housing is provided with a plurality of heat dissipation holes evenly distributed thereon, and the surface of the housing is provided with a black matte oxide coating.

[0015] In one embodiment of this utility model, heat dissipation brackets are provided at the four corners of the light source frame, and cooling fans are provided on the heat dissipation brackets. The cooling fans are arranged opposite to the light source components, and the cooling fans actively dissipate heat from the light source components.

[0016] In one embodiment of this utility model, the lighting angle of the lighting component is 0°-25°, and four detection light sources are arranged sequentially in the vertical direction of the support frame. The lighting angle of the detection light source located at the bottom layer of the support frame is 25°-40°, the lighting angle of the detection light source located at the second layer of the support frame is 40°-50°, the lighting angle of the detection light source located at the third layer of the support frame is 50°-65°, and the lighting angle of the detection light source located at the fourth layer of the support frame is 65°-90°.

[0017] In one embodiment of this utility model, the detection light source includes a light source plate, on which a plurality of LED beads are uniformly arranged. The LED beads emit red, green, or blue light, and the thickness of the light source plate matches the width of the inclined groove.

[0018] This utility model also includes a vision device, comprising a detection camera, a sorting mechanism for grasping workpieces to be inspected, and a multi-angle, multi-light source mechanism as described above. The detection camera is connected to the inspection frame via a camera mount and is positioned above the multi-angle, multi-light source mechanism. A light shield is provided between the detection camera and the multi-angle, multi-light source mechanism. The detection camera is used to perform visual inspection of the workpieces to be inspected illuminated by the multi-angle, multi-light source mechanism. The sorting mechanism is positioned on the inspection frame and is used to sort and transport the workpieces to be inspected after visual inspection.

[0019] In one embodiment of this utility model, the sorting mechanism includes a sorting frame that is slidably mounted on the inspection frame. The sorting frame is equipped with a plurality of picking cylinders, the piston rod end of which is drivenly connected to a picking nozzle. The inspection frame is equipped with a driver that is drivenly connected to the sorting frame. The driver drives the picking nozzle on the sorting frame to move up and down to pick up and transport the workpiece to be inspected after visual inspection.

[0020] The beneficial effects of this utility model are:

[0021] This invention features multiple detection light sources arranged vertically along a support frame. Each light source has a different illumination angle, which increases from bottom to top. This multi-layered design with varying angles creates diverse lighting effects. For the same product, it can simulate a dark field to detect chip surface defects and improve the detection of abnormal chips. It can also simulate a bright field to identify chip characters and reference points. Furthermore, each detection light source and illumination component can be independently lit, creating various combinations. Compared to traditional square and ring light sources, it offers more angles, and users can customize the light source's illumination position to meet the diverse lighting needs of compatible products with various shapes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a multi-angle, multi-light source mechanism according to this utility model.

[0023] Figure 2 This is a schematic diagram of the light source component of this utility model.

[0024] Figure 3 This is a schematic diagram of the light source component of this utility model.

[0025] Figure 4 This is a schematic diagram of the visual device of this utility model.

[0026] The following are the labeling instructions in the diagram: 1. Multi-angle, multi-light source mechanism; 11. Housing; 12. Heat dissipation hole; 13. Cooling fan; 14. Heat dissipation frame; 15. Light source opening; 16. Lighting position; 17. Light source frame; 2. Light source component; 21. Support frame; 22. Detection light source; 23. Inclined groove; 24. Light source board; 25. Lamp bead; 3. Lighting component; 31. Fixing block; 32. Inclined surface; 33. Support plate; 34. Mounting groove; 35. Test light source; 4. Test light source; 41. Camera frame; 42. Detection frame; 43. Light shield; 44. Driver; 45. Sorting rack; 46. Picking cylinder; 47. Picking nozzle. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1-3 As shown, a multi-angle, multi-light source mechanism 1 includes:

[0029] A light source holder 17 is provided with a light source opening 15;

[0030] A light source assembly is disposed on the light source frame 17. The light source assembly includes multiple light source components 2, which are evenly arranged around the upper edge of the light source opening 15. The light source components 2 are used to illuminate the lighting position 16.

[0031] A lighting assembly is mounted on the light source frame 17. The lighting assembly includes multiple lighting components 3, which are evenly arranged around the lower edge of the light source opening 15. The lighting components 3 are used to illuminate the lighting position 16.

[0032] The light source component 2 includes a support frame 21, and a plurality of detection light sources 22 are arranged sequentially in the vertical direction of the support frame 21. The illumination angle of each detection light source 22 is different, and the illumination angle of each detection light source 22 increases sequentially from bottom to top.

[0033] This invention features multiple detection light sources 22 arranged vertically along the support frame 21. Each detection light source 22 has a different illumination angle, which increases from bottom to top. This multi-layered design with different angles produces varying lighting effects. For the same product, it can simulate a dark field to detect chip surface defects and improve the detection of abnormal chips. It can also simulate a bright field to identify chip characters and reference points. Furthermore, each detection light source 22 and the illumination component 3 can be independently lit, creating multiple combination methods. Compared to traditional square and ring light sources, it offers more angles, and users can customize the illumination position of the light sources to meet the diverse lighting needs of compatible products with various shapes.

[0034] The light source assembly includes 2, 4, 6 or 8 light source components 2. Multiple light source components 2 are arranged around the light source frame 17 to produce various combination methods. Compared with traditional square light sources and ring light sources, there are more lighting angles. The lighting angle is the angle between the light-emitting surface of the light source component 2 and the plane of the lighting position 16.

[0035] In one embodiment of the present invention, the support frame 21 has multiple inclined grooves 23 on both sides, and the two ends of the detection light source 22 are engaged in the inclined grooves 23. The angle between the inclined groove 23 and the plane of the illumination position 16 is the same as the illumination angle of the corresponding detection light source 22.

[0036] Specifically, by setting tilting slots 23 with different tilt angles, the position and illumination angle of different detection light sources 22 can be adjusted. Different angles produce different illumination effects, which can detect defects on the chip surface and improve the detection of abnormal chips. At the same time, the tilting slots 23 can also be set with different tilt angles to meet the needs of different illumination angles. In other embodiments, more can be set according to actual needs. This utility model does not limit this.

[0037] In one embodiment of this utility model, the lengths of adjacent inclined grooves 23 are not the same, and the length of each inclined groove 23 decreases from bottom to top, so that the multiple detection light sources 22 on the support frame 21 are staggered.

[0038] Specifically, the length of the inclined groove 23 decreases from bottom to top, which allows the light source plate 24 of each detection light source 22 to be inserted into the inclined groove 23 at different positions. This results in multiple detection light sources 22 being staggered in the vertical direction of the support frame 21, ensuring that each detection light source 22 does not interfere with each other. This avoids stray light interfering with the detection position, increases image contrast, and improves the accuracy of product detection.

[0039] In one embodiment of the present invention, the lighting component 3 includes a fixing block 31 and a test light source 435. The fixing block 31 is disposed on the lower edge of the light source opening 15. An inclined surface 32 is provided on the fixing block 31. The bottom of the inclined surface 32 is connected to the support plate 33. The support plate 33 and the inclined surface 32 form a mounting groove 34. The test light source 435 is disposed on the mounting groove 34.

[0040] Specifically, the support plate 33 and the inclined surface 32 form an installation groove 34. The test light source 435 is set on the installation groove 34. It is combined with the detection light source 22 to simulate high / low angle lighting mode. Different angles produce different lighting effects, thereby improving the detection capability of product defects.

[0041] In one embodiment of the present invention, the upper cover of the light source holder 17 is provided with a housing 11, the housing 11 is provided with a plurality of heat dissipation holes 12 evenly distributed, and the surface of the housing 11 is provided with a black matte oxide coating.

[0042] Specifically, multiple heat dissipation holes 12 are evenly provided on the housing 11. The increased openings and hollowing out facilitate heat dissipation of the detection light source 22, effectively extending the lifespan of the light source. The surface of the housing 11 is provided with a black matte oxide coating to avoid interference from stray light on the material surface, prevent stray light from interfering with the detection position, increase image contrast, and improve the accuracy of product detection.

[0043] In one embodiment of the present invention, heat dissipation brackets 14 are provided at the four corners of the light source bracket 17, and heat dissipation fans 13 are provided on the heat dissipation brackets 14. The heat dissipation fans 13 are arranged opposite to the light source component 2, and the heat dissipation fans 13 actively dissipate heat from the light source component 2.

[0044] Specifically, fans are added to the four corners of the multi-angle multi-light source mechanism 1. The cooling fans 13 actively dissipate heat from the light source component 2, using physical methods to dissipate heat from the light source, effectively extending the lifespan of the light source.

[0045] In one embodiment of this utility model, the lighting angle of the lighting component 3 is 0°-25°, and four detection light sources 22 are arranged sequentially in the vertical direction of the support frame 21. The lighting angle of the detection light source 22 located at the bottom layer of the support frame 21 is 25°-40°, the lighting angle of the detection light source 22 located at the second layer of the support frame 21 is 40°-50°, the lighting angle of the detection light source 22 located at the third layer of the support frame 21 is 50°-65°, and the lighting angle of the detection light source 22 located at the fourth layer of the support frame 21 is 65°-90°.

[0046] A preferred embodiment of this invention is that four detection light sources 22 are sequentially arranged in the vertical direction of the support frame 21. In other embodiments, more can be arranged according to actual needs. This invention does not limit this. That is, the detection light sources 22 are designed to have four layers, and each layer has a different angle. The lighting angle of the lighting component 3 is 10°, the lighting angle of the detection light source 22 located at the bottom layer of the support frame 21 is 30°, the lighting angle of the detection light source 22 located at the second layer of the support frame 21 is 45°, the lighting angle of the detection light source 22 located at the third layer of the support frame 21 is 60°, and the lighting angle of the detection light source 22 located at the fourth layer of the support frame 21 is 75°. The use of five layers of light sources with diverse angles produces different lighting effects. For the same product, a dark field can be simulated to detect chip surface defects and improve the detection of abnormal chips. At the same time, a bright field can be simulated to identify chip characters and mark points.

[0047] In one embodiment of this utility model, the detection light source 22 includes a light source plate 24, on which a plurality of lamp beads 25 are uniformly arranged. The light emission color of the lamp beads 25 is red, green or blue. The thickness of the light source plate 24 matches the width of the inclined groove 23, that is, the light source plate 24 can be locked in the inclined groove 23 to ensure the installation effect of the detection light source 22. The detection light source 22 has the same structure as the test light source 435.

[0048] Specifically, the wavelength of the green light is 520nm-532nm, the wavelength of the blue light is 420nm-460nm, and the wavelength of the red light is 620nm-640nm.

[0049] In view of the different reflection effects of different wavelengths on different materials and colors of products, the preferred solution of this utility model is that the wavelength of the green light source is 525 nm, the wavelength of the blue light source is 440 nm, and the wavelength of the red light source is 625 nm. This can improve the surface recognition of products of different materials and is compatible with products of multiple materials.

[0050] The LED bead 25 of this utility model adopts Ni Chia high-brightness plug-in LED bead 25, which has good consistency, long service life, and a light emission angle of 30° to reduce the reflection angle.

[0051] Reference Figure 4As shown, this utility model also includes a vision device, including a detection camera, a sorting mechanism for grasping the workpiece to be inspected, and a multi-angle multi-light source mechanism 1 as described above. The detection camera is connected to the detection frame 42 via a camera mount 41. The detection camera is positioned above the multi-angle multi-light source mechanism 1, and a light shield 43 is provided between the detection camera and the multi-angle multi-light source mechanism 1. The detection camera is used to perform visual inspection on the workpiece to be inspected illuminated by the multi-angle multi-light source mechanism 1. The sorting mechanism is positioned on the detection frame 42 and is used to sort and transport the workpiece to be inspected after visual inspection.

[0052] This invention uses a detection camera to perform visual inspection on the workpiece to be inspected under the illumination of a multi-angle, multi-light source mechanism 1, which facilitates subsequent visual inspection. The inspection is convenient and has high accuracy. The sorting mechanism sorts and transports the workpieces to be inspected after visual inspection, and quickly transports defective workpieces to ensure workpiece inspection efficiency. The light shield 43 avoids stray light from interfering with the detection position, increases image contrast, and improves product inspection accuracy.

[0053] In one embodiment of this utility model, the sorting mechanism includes a sorting frame 45, which is slidably mounted on the inspection frame 42. The sorting frame 45 is provided with a plurality of picking cylinders 46, and the piston rod end of the picking cylinder 46 is drivenly connected to the picking nozzle 47. The inspection frame 42 is provided with a driver 44, which is drivenly connected to the sorting frame 45. The driver 44 drives the picking nozzle 47 on the sorting frame 45 to lift and lower to pick up and transport the workpiece to be inspected after visual inspection.

[0054] Specifically, after visual inspection is completed, the transport drive equipment drives the vision device to move, so that the sorting mechanism is positioned relative to the defective workpiece. The driver 44 drives the picking nozzle 47 on the sorting rack 45 to descend. The workpiece is picked up by the picking nozzle 47 and then rises to the initial position. Driven by the transport drive equipment, the workpiece to be inspected after visual inspection is transported and unloaded, and the defective workpiece is quickly transported to ensure workpiece inspection efficiency.

[0055] The driver 44 can provide power to hydraulic devices, pneumatic devices, servo motors (to provide reciprocating motion by driving screws, cams, etc.), etc. The driver 44 can drive the sorting rack 45 to move up and down reciprocally to ensure material picking efficiency and accuracy.

[0056] Usage process

[0057] The inspection frame 42 is connected to the handling drive equipment such as the robot arm, which drives the entire vision device to move in space. After the vision device is moved above the workpiece to be inspected, the multi-angle multi-light source mechanism 1 illuminates the workpiece to be inspected at the illumination position 16. The inspection camera then performs visual inspection on the illuminated workpiece to detect defects on the inspection surface. After the visual inspection is completed, the handling drive equipment drives the vision device to move, so that the sorting mechanism is positioned relative to the unqualified workpiece. The driver 44 drives the picking nozzle 47 on the sorting frame 45 to descend. The workpiece is picked up by the picking nozzle 47 and then rises to the initial position. Under the drive of the handling drive equipment, the workpiece to be inspected that has completed the visual inspection is transported and unloaded, and the defective workpiece is transported quickly to ensure the workpiece inspection efficiency.

[0058] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A multi-angle multi-light source mechanism, characterized by, include: A light source holder with a light source opening on it; A light source assembly is disposed on the light source frame. The light source assembly includes multiple light source components, which are evenly arranged around the upper edge of the light source opening. The light source components are used to illuminate the lighting position. A lighting assembly is mounted on the light source frame. The lighting assembly includes multiple lighting components, which are evenly arranged around the lower edge of the light source opening. The lighting components are used to illuminate the lighting position. The light source component includes a support frame, and multiple detection light sources are arranged sequentially in the vertical direction of the support frame. The illumination angle of each detection light source is different, and the illumination angle of each detection light source increases sequentially from bottom to top.

2. The multi-angle multi-light source mechanism of claim 1, wherein, The support frame has multiple inclined slots on both sides, and the two ends of the detection light source are fixed on the inclined slots. The angle between the inclined slot and the light-emitting plane is the same as the light-emitting angle of the corresponding detection light source.

3. The multi-angle multi-light source mechanism of claim 2, wherein, The lengths of adjacent inclined slots are all different, and the length of each inclined slot decreases from bottom to top, so that the multiple detection light sources on the support frame are staggered.

4. The multi-angle multi-light source mechanism of claim 1, wherein, The lighting component includes a fixing block and a test light source. The fixing block is disposed on the lower edge of the opening of the light source. An inclined surface is provided on the fixing block. The bottom of the inclined surface is connected to a support plate. The support plate and the inclined surface form a mounting groove. The test light source is disposed on the mounting groove.

5. The multi-angle multi-light source mechanism of claim 1, wherein, The light source holder is covered with a housing, on which multiple heat dissipation holes are evenly distributed, and the surface of the housing is coated with a black matte oxide coating.

6. The multi-angle multi-light source mechanism of claim 1, wherein, Heat dissipation racks are provided at the four corners of the light source frame, and cooling fans are provided on the heat dissipation racks. The cooling fans are arranged opposite to the light source components and actively dissipate heat from the light source components.

7. The multi-angle multi-light source mechanism of claim 1, wherein, The lighting component has a lighting angle of 0°-25°. Four detection light sources are arranged in sequence in the vertical direction of the support frame. The lighting angle of the detection light source located at the bottom layer of the support frame is 25°-40°, the lighting angle of the detection light source located at the second layer of the support frame is 40°-50°, the lighting angle of the detection light source located at the third layer of the support frame is 50°-65°, and the lighting angle of the detection light source located at the fourth layer of the support frame is 65°-90°.

8. The multi-angle, multi-light source mechanism as described in claim 2, characterized in that, The detection light source includes a light source board, on which multiple LED beads are evenly arranged. The LED beads emit red, green, or blue light, and the thickness of the light source board matches the width of the inclined groove.

9. A vision device, characterized by The device includes a detection camera, a sorting mechanism for gripping workpieces to be inspected, and a multi-angle, multi-light source mechanism as described in any one of claims 1 to 8. The detection camera is connected to a detection frame via a camera mount and is positioned above the multi-angle, multi-light source mechanism. A light shield is provided between the detection camera and the multi-angle, multi-light source mechanism. The detection camera is used to perform visual inspection of the workpieces to be inspected illuminated by the multi-angle, multi-light source mechanism. The sorting mechanism is positioned on the detection frame and is used to sort and transport the workpieces to be inspected after visual inspection.

10. The visual apparatus of claim 9, wherein, The sorting mechanism includes a sorting frame that slides on the inspection frame. The sorting frame is equipped with multiple picking cylinders, and the piston rod of each picking cylinder is driven to a picking nozzle. The inspection frame is equipped with a driver that is driven to the sorting frame. The driver drives the picking nozzle on the sorting frame to lift and lower to pick up and transport the workpiece to be inspected after visual inspection.

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