Industrial part defect detection device based on machine vision

Abstract

The utility model relates to the technical field of part defect detection, in particular to an industrial part defect detection device based on machine vision, which comprises a support, a driving mechanism, a collecting mechanism and a light source assembly, the driving mechanism is arranged on the support, the collecting mechanism is arranged on the support, and the light source assembly is arranged on the support. The light source assembly comprises a first camera, a second camera, a main light source, a backlight source, a fixing plate and a supporting table, the supporting table is arranged on the support, the first camera is arranged on the supporting table, the main light source is arranged on the first camera, the fixing plate is arranged on the support, the backlight source is arranged on the fixing plate, and the supporting table is arranged on the support. The second camera is arranged on the fixing plate, a sliding groove is formed in the support, a sliding plate is arranged through the sliding groove, a connecting hole is formed in the sliding plate, and a glass plate is arranged through the connecting hole. And the risk of human errors is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of parts defect detection, and in particular to an industrial parts defect detection device based on machine vision. Background Art

[0002] The industrial parts defect detection device based on machine vision is an automated system that uses image processing and analysis technology to detect surface defects of industrial products. It usually includes an image acquisition module, an image processing and analysis module, and a data management and human-computer interaction module. The system needs to achieve high-speed image processing and defect detection while ensuring detection accuracy to meet the needs of industrial production.

[0003] At present, the Chinese utility model patent application with the publication date of June 14, 2022 and the publication number CN 216746188U provides an industrial parts defect detection device based on machine vision, including a detection table, a mounting plate is arranged in the middle of the detection table, a driving structure is arranged below the mounting plate, a clamping structure is arranged above the mounting plate, vertical frames are symmetrically arranged on both sides of the detection table, a first ball screw is arranged in the vertical frame, a first gear is arranged at the upper end of the first ball screw, a first threaded slider is arranged on the first ball screw, a first detector is installed on one side of the first threaded slider, bumps are arranged on both sides of the first threaded slider, the bumps are arranged in the guide rail, a horizontal frame is arranged above the two vertical frames, and a second detector is rotatably connected to the bottom of the horizontal frame, the tail end of the second detector is transmission-connected to the transmission structure arranged in the horizontal frame, and both ends of the transmission structure are transmission-connected to the first gear, and a printer is arranged on the detection table at the tail end of the driving structure. The utility model can perform multi-directional detection of different parts, has strong practicality and is suitable for promotion.

[0004] In the related art, in the industrial parts defect detection device based on machine vision, when multiple cameras are used to take pictures of the workpiece, the load-bearing part of the detection platform may block the camera's field of view, resulting in the inability to fully capture all surfaces of the workpiece. In this case, the position of the workpiece needs to be adjusted multiple times, which increases the detection time and complexity. In order to obtain a complete workpiece image, it may be necessary to adjust the position of the workpiece multiple times and take multiple shots, which not only reduces the detection efficiency, but also may increase the risk of human error.

[0005] Therefore, it is necessary to provide an industrial parts defect detection device based on machine vision to solve the above problems. Utility Model Content

[0006] The embodiment of the present application provides an industrial parts defect detection device based on machine vision, in order to improve the technical problem existing in the related art that the contact side of the industrial parts with the support platform cannot be photographed, and multiple adjustments are required to obtain a complete workpiece image.

[0007] An embodiment of the present application provides an industrial part defect detection device based on machine vision, including a bracket, a driving mechanism, a collecting mechanism and a light source assembly, wherein the driving mechanism is arranged on the bracket, the collecting mechanism is arranged on the bracket, the light source assembly includes a first camera, a second camera, a main light source, a backlight source, a fixing plate and a support platform, the support platform is arranged on the bracket, the first camera is arranged on the support platform, the main light source is arranged on the first camera, the fixing plate is arranged on the bracket, the backlight source is arranged on the fixing plate, the second camera is arranged on the fixing plate, a sliding groove is opened on the bracket, a sliding plate is arranged through the sliding groove, a connecting hole is opened on the sliding plate, and a glass plate is arranged through the connecting hole.

[0008] The above-mentioned technical scheme in the embodiment of the present application has at least the following technical effects: when the operator needs to inspect the industrial parts, the operator places the parts on the glass plate, and the driving assembly drives the sliding plate to move in the sliding groove and moves it under the first camera. The main light source illuminates the other surfaces of the parts, and the first camera inspects the parts. The backlight source illuminates the side of the industrial parts that contacts the carrier platform, and the second camera inspects the parts, thereby reducing the need to adjust the position of the parts multiple times, reducing the inspection time and complexity, and reducing the risk of human error.

[0009] The machine vision-based industrial parts defect detection device provided in the embodiment of the present application can perform multi-faceted detection of parts through a light source assembly, thereby reducing the need for multiple position adjustments of parts, reducing detection time and complexity, and reducing the risk of human error.

[0010] In some embodiments, the driving mechanism includes a rotating component, which includes a motor, a driving gear, a driven gear, a first belt, a second belt, a double-layer pulley, a first pulley and a second pulley. The motor is arranged on a support platform, the driving gear is arranged on the motor, the driving gear is coaxially transmitted with the output shaft of the motor, the double-layer pulley is arranged on the support platform, the driven gear is arranged on the end of the double-layer pulley away from the support platform, the driven gear is meshed with the driving gear for transmission, the driven gear is coaxially transmitted with the double-layer pulley, the first pulley is arranged on the support platform, the second pulley is arranged on the support platform, one end of the first belt is arranged on the double-layer pulley, the other end of the first belt is arranged on the first pulley, one end of the second belt is arranged on the double-layer pulley, and the other end of the second belt is arranged on the second pulley.

[0011] In some embodiments, the driving mechanism also includes a sliding assembly, which includes a lead screw and a rack. One end of the lead screw is arranged on the first pulley, and the lead screw and the first pulley are coaxially transmitted. A transmission hole is opened on the bracket, and a linkage gear is arranged on the other end of the lead screw through the transmission hole. A rack is arranged on one end of the sliding plate close to the linkage gear, and the rack is meshed with the linkage gear for transmission.

[0012] In some embodiments, the collecting mechanism includes a movable component, and the movable component includes a support frame, a cylinder, and a push plate. The support frame is arranged on the bracket, the cylinder is arranged on the support frame, and the push plate is arranged on the output shaft of the cylinder.

[0013] In some embodiments, the collection mechanism also includes a discharging assembly, which includes a connecting plate, a baffle and a collecting trough, wherein the connecting plate is arranged on the bracket, the baffle is arranged on the connecting plate, and the collecting trough is arranged on an end of the connecting plate away from the bracket.

[0014] In some embodiments, a light strip is disposed on the glass plate.

[0015] In some embodiments, a cleaning brush is disposed on the push plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of an industrial parts defect detection device based on machine vision provided in an embodiment of the present application;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 A schematic diagram of the exploded structure of an industrial parts defect detection device based on machine vision provided in an embodiment of the present application;

[0019] Figure 4 This is an enlarged structural schematic diagram of the sliding assembly provided in an embodiment of the present application;

[0020] Figure 5 This is an enlarged structural schematic diagram of the collection mechanism provided in an embodiment of the present application;

[0021] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0022] Among them, the reference numerals in the figure are:

[0023] 1. Bracket; 2. Light source assembly; 21. First camera; 22. Second camera; 23. Main light source; 24. Backlight source; 25. Fixed plate; 26. Glass plate; 27. Support platform; 3. Driving mechanism; 31. Rotating assembly; 311. Motor; 312. Driving gear; 313. Driven gear; 314. First belt; 315. Second belt; 316. Double-layer pulley; 317. First pulley; 318. Second pulley; 32. Sliding assembly; 321. Lead screw; 322. Rack; 323. Linking gear; 324. Sliding groove; 325. Sliding plate; 4. Collecting mechanism; 41. Movable assembly; 411. Support frame; 412. Cylinder; 413. Push plate; 414. Cleaning brush; 42. Discharging assembly; 421. Connecting plate; 422. Baffle; 423. Collecting groove; 5. Light belt. DETAILED DESCRIPTION

[0024] Based on this, in order to improve the technical problem in the related art that the contact side of the industrial parts with the carrier cannot be photographed and multiple adjustments are required to obtain a complete workpiece image, the embodiment of the present application provides the following solution.

[0025] Please also read Figures 1 to 6 An embodiment of the present application provides an industrial parts defect detection device based on machine vision, and the industrial parts defect detection device based on machine vision includes a bracket 1, a driving mechanism 3, a collecting mechanism 4 and a light source assembly 2, wherein the driving mechanism 3 is arranged on the bracket 1, the collecting mechanism 4 is arranged on the bracket 1, and the light source assembly 2 is arranged on the bracket 1.

[0026] In some embodiments, please refer to Figure 3 to Figure 4 The light source assembly 2 includes a first camera 21, a second camera 22, a main light source 23, a backlight source 24, a fixing plate 25 and a support platform 27, wherein the support platform 27 is arranged on the bracket 1, the first camera 21 is arranged on the supporting platform 27, the main light source 23 is arranged on the first camera 21, the fixing plate 25 is arranged on the bracket 1, the backlight source 24 is arranged on the fixing plate 25, the second camera 22 is arranged on the fixing plate 25, a sliding groove 324 is provided on the bracket 1, a sliding plate 325 is arranged through the sliding groove 324, a connecting hole is provided on the sliding plate 325, a glass plate 26 is arranged through the connecting hole, and a light strip 5 is arranged on the glass plate 26.

[0027] With such arrangement, when the operator needs to inspect the industrial parts, the operator places the parts on the glass plate 26, and the driving assembly drives the sliding plate 325 to move in the sliding groove 324 and move it under the first camera 21. The main light source 23 illuminates the other surfaces of the parts, and the first camera 21 inspects the parts. The backlight source 24 illuminates the contact surface of the industrial parts with the carrier platform, and the second camera 22 inspects the parts. At the same time, a light strip 5 is arranged on the glass plate 26 to enhance the details of the contact surface and make the subtle features more obvious. This is very useful for detecting surface defects or tiny features. The backlight source 24 is located behind the object to be inspected and can highlight the outline and edge of the object. This lighting method helps to form a clear image, so that the inspection system can more easily identify the shape and defects of the object. By illuminating from behind the object, the backlight source 24 can reduce shadow and reflection interference, thereby improving the brightness and contrast of the image, which is particularly important for detection tasks that require high-contrast images. The light strip 5 can provide uniform lighting, further reducing shadows and reflections, making image processing simpler and more accurate. By combining the use of the backlight source 24 and the light strip 5, multi-angle and multi-level lighting of industrial parts can be achieved. This design not only improves the image quality, but also simplifies the image processing algorithm, thereby improving the efficiency and accuracy of detection. Clear images and efficient lighting design can reduce manual intervention and image processing time, and reduce the complexity and cost of detection.

[0028] In some embodiments, please refer to Figures 1 to 4The driving mechanism 3 includes a rotating assembly 31 and a sliding assembly 32. The rotating assembly 31 includes a motor 311, a driving gear 312, a driven gear 313, a first belt 314, a second belt 315, a double-layer pulley 316, a first pulley 317 and a second pulley 318. The sliding assembly 32 includes a lead screw 321 and a rack 322. The motor 311 is arranged on the support platform 27. The driving gear 312 is arranged on the motor 311. The driving gear 312 is coaxial with the output shaft of the motor 311. The double-layer pulley 316 is arranged on the support platform 27. The driven gear 313 is arranged on the end of the double-layer pulley 316 away from the support platform 27. The driven gear 313 is meshed with the driving gear 312 for transmission. The driven gear 313 is meshed with the double-layer pulley 31 6 coaxial transmission, the first pulley 317 is arranged on the support platform 27, the second pulley 318 is arranged on the support platform 27, one end of the first belt 314 is arranged on the double-layer pulley 316, the other end of the first belt 314 is arranged on the first pulley 317, one end of the second belt 315 is arranged on the double-layer pulley 316, the other end of the second belt 315 is arranged on the second pulley 318, one end of the lead screw 321 is arranged on the first pulley 317, the lead screw 321 and the first pulley 317 are coaxially transmitted, a transmission hole is opened on the bracket 1, the other end of the lead screw 321 is provided with a linkage gear 323 through the transmission hole, the sliding plate 325 is provided with a rack 322 at one end close to the linkage gear 323, and the rack 322 is meshed with the linkage gear 323 for transmission.

[0029] With such arrangement, after the operator places the parts on the glass plate 26, the motor 311 is turned on, so that the motor 311 drives the driving gear 312 to rotate, and the driven gear 313 rotates through the meshing transmission between the driving gear 312 and the driven gear 313, and the driven gear 313 drives the double-layer pulley 316 to rotate, and the double-layer pulley 316 drives the first belt 314 and the second belt 315 to rotate due to friction, and the rotation of the first belt 314 and the second belt 315 drives the first pulley 317 and the second pulley 318 to rotate due to friction, and the rotation of the first pulley 317 and the second pulley 318 drives the lead screw 321 to rotate, and the rotation of the lead screw 321 drives the linkage gear 323 to rotate, and the linkage gear 323 and the rack 322 are meshed for transmission, so the rack 322 drives the sliding plate 325 to move parallel in the sliding groove 324. Through the meshing of the driving gear 312 and the driven gear 313, power can be efficiently transmitted from the motor 311 to the subsequent components. The gear transmission has a precise transmission ratio, which can ensure that the speed of the driven gear 313 is consistent with the driving gear 312. This accuracy is very important for applications that require precise control of motion. The system realizes the conversion from rotational motion to linear motion through the combination of gears, belts and screws 321. The combination of gear transmission and belt transmission makes the entire system compact and suitable for installation and use in limited space. The combined transmission of gears and belts can provide smooth motion and reduce vibration and impact. This is particularly important for applications that require precise motion control.

[0030] In some embodiments, please refer to Figures 1 to 6 The collecting mechanism 4 includes a movable assembly 41, which includes a support frame 411, a cylinder 412 and a push plate 413. The support frame 411 is arranged on the bracket 1, the cylinder 412 is arranged on the support frame 411, and the push plate 413 is arranged on the output shaft of the cylinder 412. The collecting mechanism 4 also includes a discharging assembly 42, which includes a connecting plate 421, a baffle 422 and a collecting trough 423. The connecting plate 421 is arranged on the bracket 1, the baffle 422 is arranged on the connecting plate 421, the collecting trough 423 is arranged on the end of the connecting plate 421 away from the bracket 1, and a cleaning brush 414 is arranged on the push plate 413.

[0031] With such arrangement, after the light source assembly 2 has finished inspecting the parts, the cylinder 412 pushes the push plate 413 to push the parts to the connecting plate 421. The inclined connecting plate 421 drives the parts to roll into the collecting tank 423. The baffle 422 on the connecting plate 421 reduces the probability of the parts falling during rolling. At the same time, a cleaning brush 414 is arranged at one end of the lower part of the push plate 413 near the glass plate 26. When the cylinder 412 pushes the push plate 413 to push the parts out, the cleaning brush 414 cleans the glass plate 26 to reduce the situation of unclear detection due to dirt on the glass plate 26. The inclined connecting plate 421 and the baffle 422 can effectively guide the parts to roll to the collecting tank 423, reducing the risk of the parts falling or deviating during the transmission process. This design ensures the smooth transmission of the parts and improves the reliability and stability of the system. The parts can be automatically moved from one position to another by the cylinder 412 pushing the push plate 413. This automated design reduces the need for manual intervention, improves production efficiency, and reduces the possibility of human error. The cleaning brush 414 provided under the push plate 413 can clean the glass plate 26 when the push plate 413 moves. This design effectively reduces the accumulation of dirt on the glass plate 26, ensures the clarity of the light source assembly 2 when inspecting parts, thereby improving the accuracy and reliability of detection. By integrating the cleaning brush 414 into the system, the frequency and difficulty of manual cleaning are reduced. This not only reduces maintenance costs, but also extends the service life of the equipment because it reduces wear and failure caused by dirt.

[0032] The implementation principle of the industrial parts defect detection device based on machine vision in the embodiment of the present application is as follows: after the operator places the parts on the glass plate 26, the motor 311 is turned on, so that the motor 311 drives the driving gear 312 to rotate, and the driven gear 313 rotates through the meshing transmission between the driving gear 312 and the driven gear 313, and the driven gear 313 rotates, and the driven gear 313 drives the double-layer pulley 316 to rotate, and the double-layer pulley 316 drives the first belt 314 and the second belt 315 to rotate due to friction, and the first belt 314 and the second belt 315 rotate and drive the first pulley 317 and the second pulley 318 to rotate due to friction, and the first pulley 317 and the second pulley 318 rotate and drive the lead screw 321 to rotate, and the lead screw 321 rotates and drives the linkage gear 323 to rotate, and the linkage gear 323 and the rack 322 mesh and transmit, so the rack 322 drives the sliding plate 325 to move parallel in the sliding groove 324 and move to the first Under a camera 21, the main light source 23 illuminates the other surfaces of the part, the first camera 21 inspects the part, the backlight source 24 illuminates the contact surface of the industrial part with the carrier, and the second camera 22 inspects the part. At the same time, a light strip 5 is arranged on the glass plate 26 to enhance the detail performance at the contact surface and make the subtle features more obvious. After the light source assembly 2 has completed the inspection of the part, the cylinder 412 pushes the push plate 413 to push the part to the connecting plate 421. The inclined connecting plate 421 drives the part to roll into the collection tank 423. The baffle 422 on the connecting plate 421 reduces the probability of the part falling during rolling. At the same time, a cleaning brush 414 is arranged at one end of the push plate 413 close to the glass plate 26. When the cylinder 412 pushes the push plate 413 to push the part out, the cleaning brush 414 cleans the glass plate 26 to reduce the situation where the detection is unclear due to the dirt on the glass plate 26.

[0033] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An industrial parts defect detection device based on machine vision, characterized in that: The invention comprises a support (1), a driving mechanism (3), a collecting mechanism (4) and a light source assembly (2), wherein the driving mechanism (3) is arranged on the support (1), the collecting mechanism (4) is arranged on the support (1), the light source assembly (2) comprises a first camera (21), a second camera (22), a main light source (23), a backlight source (24), a fixing plate (25) and a support platform (27), the support platform (27) being arranged on the support (1), the first camera (21) being arranged on the supporting platform (27), the main light source (23) being arranged on the first camera (21), the fixing plate (25) being arranged on the support (1), the backlight source (24) being arranged on the fixing plate (25), and the second camera (22) being arranged on the fixing plate (25), the support (1) being provided with a sliding groove (324), a sliding plate (325) being arranged through the sliding groove (324), a connecting hole being arranged on the sliding plate (325), and a glass plate (26) being arranged through the connecting hole.

2. The industrial parts defect detection device based on machine vision according to claim 1, characterized in that: The driving mechanism (3) comprises a rotating assembly (31), wherein the rotating assembly (31) comprises a motor (311), a driving gear (312), a driven gear (313), a first belt (314), a second belt (315), a double-layer pulley (316), a first pulley (317), and a second pulley (318); the motor (311) is arranged on a support platform (27); the driving gear (312) is arranged on the motor (311); the driving gear (312) and the output shaft of the motor (311) are coaxially driven; the double-layer pulley (316) is arranged on the support platform (27); the driven gear (313) is arranged on the double-layer pulley (316) ) is on one end away from the support platform (27), the driven gear (313) is meshed with the driving gear (312) for transmission, the driven gear (313) is coaxially transmitted with the double-layer pulley (316), the first pulley (317) is arranged on the support platform (27), the second pulley (318) is arranged on the support platform (27), one end of the first belt (314) is arranged on the double-layer pulley (316), the other end of the first belt (314) is arranged on the first pulley (317), one end of the second belt (315) is arranged on the double-layer pulley (316), and the other end of the second belt (315) is arranged on the second pulley (318).

3. The industrial parts defect detection device based on machine vision according to claim 2, characterized in that: The driving mechanism (3) further comprises a sliding assembly (32), the sliding assembly (32) comprising a lead screw (321) and a rack (322), one end of the lead screw (321) being arranged on the first pulley (317), the lead screw (321) and the first pulley (317) being coaxially driven, a transmission hole being provided on the bracket (1), the other end of the lead screw (321) passing through the transmission hole and being provided with a linkage gear (323), the end of the sliding plate (325) close to the linkage gear (323) being provided with a rack (322), the rack (322) and the linkage gear (323) being meshed and driven.

4. The industrial parts defect detection device based on machine vision according to claim 3 is characterized in that: The collecting mechanism (4) comprises a movable component (41), the movable component (41) comprising a support frame (411), a cylinder (412) and a push plate (413), the support frame (411) being arranged on a bracket (1), the cylinder (412) being arranged on the support frame (411), and the push plate (413) being arranged on an output shaft of the cylinder (412).

5. The industrial parts defect detection device based on machine vision according to claim 4 is characterized in that: The collecting mechanism (4) further comprises a discharge assembly (42), the discharge assembly (42) comprising a connecting plate (421), a baffle (422) and a collecting trough (423), the connecting plate (421) being arranged on the bracket (1), the baffle (422) being arranged on the connecting plate (421), and the collecting trough (423) being arranged on an end of the connecting plate (421) away from the bracket (1).

6. The industrial parts defect detection device based on machine vision according to claim 5, characterized in that: A light strip (5) is arranged on the glass plate (26).

7. The industrial parts defect detection device based on machine vision according to claim 6, characterized in that: A cleaning brush (414) is provided on the push plate (413).

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