Electroplating defect real-time detection device based on machine vision

Abstract

The invention relates to the technical field of mechanical conveying equipment, and discloses a machine vision-based electroplating defect real-time detection device, which comprises a conveyor belt, a following adjustment mechanism is arranged on one side of the conveyor belt, a protective shell is arranged on the outer side of the following adjustment mechanism, a camera device is arranged in the following adjustment mechanism, and the camera device is connected with the conveyor belt. A light supplementing device is further arranged in the following adjusting mechanism, an inductive probe is arranged on one side of the following adjusting mechanism, and a receiver is further arranged on one side of the following adjusting mechanism. According to the electroplating defect real-time detection device based on machine vision, through the arrangement of the following adjusting mechanism, in the movement process of the transmission belt, synchronous movement of an electroplated part and the camera device is achieved, the situation that the production rhythm is interrupted by the traditional process of stopping, detecting and re-conveying is avoided, the overall production efficiency is improved, and the production cost is reduced. Moreover, the problems of blurring and ghosting caused by relative movement are reduced, and the conditions of false detection and missing detection caused by poor image quality are reduced.

Description

Technical Field

[0001] This invention relates to the field of industrial automation inspection technology, specifically to a real-time detection device for electroplating defects based on machine vision. Background Technology

[0002] In the electroplating production process on a factory assembly line, quality inspection of electroplated parts is a crucial step in ensuring product performance and lifespan. As the manufacturing industry upgrades towards intelligence and efficiency, machine vision technology, with its unique advantages, provides strong technical support for real-time detection of electroplating defects. Machine vision technology enables non-contact inspection, allowing for comprehensive observation of parts without direct contact with the electroplated surface during assembly line operations.

[0003] Chinese Patent CN114755178B, published on February 2, 2024, discloses an automatic detection device for wheel hub surface defects. The device transports the wheel hub to an outer defect detection unit via a wheel hub conveyor unit, completing the detection and marking of defects on the outer side of the wheel hub. It then further transports the hub to an inner defect detection unit, completing the detection and marking of defects on the inner side of the wheel hub. Finally, it transports the hub to an inspected wheel hub conveyor unit, completing the sorting of qualified and defective products. This invention is based on the characteristics of the wheel hub's rotating body, dividing the wheel hub into regions. Based on the division results, it proposes an automatic detection device for wheel hub surface defects. Through a region-based detection method, it achieves fully automated detection and marking of defects on the inner and outer surfaces of the wheel hub, effectively improving the efficiency of wheel hub defect detection and marking. However, this detection device still has certain limitations in assembly line operations. The “stop transport → inspect → re-transport” process it adopts will inevitably disrupt the continuous rhythm of production, leading to an increase in overall working time and thus reducing production efficiency. Even if some existing devices attempt to inspect simultaneously during transport, the images are often blurred when the object being inspected is in motion, affecting the accuracy of defect identification. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a real-time electroplating defect detection device based on machine vision, which solves the problems of interrupted detection processes disrupting the continuous production rhythm and image blurring during synchronous detection in transportation processes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A machine vision-based real-time electroplating defect detection device includes a conveyor belt, a following adjustment mechanism on one side of the conveyor belt, a protective shell on the outside of the following adjustment mechanism, a camera device inside the following adjustment mechanism, a supplementary light device inside the following adjustment mechanism, a sensing probe on one side of the following adjustment mechanism, and a receiver on another side of the following adjustment mechanism; the following adjustment mechanism includes a speed synchronization device for synchronizing the camera device and supplementary light device with the speed of the conveyor belt; a circulation device for resetting and detecting the next electroplated part; and a kinetic energy device for providing the power required for the device's circulation.

[0006] Preferably, the same speed adjustment device includes an electrically telescopic support column, which is installed on one side of the conveyor belt. An H-shaped bracket is connected above the electrically telescopic support column. A baffle plate is fixedly connected to one side surface of the H-shaped bracket. A drive gear is rotatably connected inside the H-shaped bracket. A contact wheel is fixedly connected to one side surface of the drive gear. A driven gear meshes with the outer surface of the drive gear. A rack meshes with the upper part of the driven gear.

[0007] Preferably, the circulation device includes upper and lower locking wheels, a locking frame is slidably connected to the outer side of the upper and lower locking wheels, a trapezoidal layered track is fixedly connected inside the locking frame, an electric push rod is fixedly connected to the upper surface of the locking frame, and a return block is fixedly connected to one side of the electric push rod.

[0008] Preferably, the homing kinetic energy device includes a fixed block, a connecting shaft core is fixedly connected to the fixed block, a spring is wound around the outside of the connecting shaft core, a telescopic cylinder is fixedly connected to one side surface of the spring, a spring housing is connected to the outside of the spring, and a displacement platform is fixedly connected to the outside of the fixed block.

[0009] Preferably, two sets of contact wheels are provided on each side above the conveyor belt, and the outer surface of the contact wheels is provided with an uneven anti-slip wheel.

[0010] Preferably, the outer dimensions of the driving gear match the outer dimensions of the driven gear, and the driven gear meshes with both sets of driving gears.

[0011] Preferably, the upper and lower locking wheels are equipped with springs and locking plates, and the trapezoidal layered tracks are arranged in two sets parallel to each other and on a straight line in the locking frame.

[0012] Preferably, two sets of electric push rods are provided above the locking frame, and the slot above the positioning block matches the size of the slot above the trapezoidal layered track.

[0013] Preferably, one fixing block is provided at each end of the connecting shaft core, one end of the spring housing is slidably connected to the telescopic cylinder, and the other end is fixedly connected to the connecting shaft core and the fixing block.

[0014] Preferably, the telescopic cylinder is slidably connected to the connecting shaft core, and the telescopic cylinder slides on the connecting shaft core via a spring.

[0015] Compared with the prior art, the present invention provides a machine vision-based real-time detection device for electroplating defects, which has the following advantages: 1. This machine vision-based real-time electroplating defect detection device, through the setting of the same speed adjustment device in the following adjustment mechanism, ensures that the contact wheel and the transmission belt are in contact during the movement of the transmission belt. Through the cooperation of the driving gear, driven gear and rack, the speed of the transmission belt is synchronized with the camera device and the supplementary light on the displacement stage, so that the electroplated parts and the camera device move synchronously. The electroplated parts can be photographed and inspected without stopping the transport of the electroplated parts in the inspection area. This avoids the interruption of the production rhythm caused by the traditional "stop → inspect → transport" process, and makes the inspection speed adaptable to the production speed of the assembly line. It significantly reduces working time and effectively improves the overall production efficiency. Moreover, with the same speed adjustment device, the camera device maintains synchronous displacement with the electroplated parts when shooting, reducing the problems of blurry and ghosting caused by relative motion, and reducing the false detection and missed detection caused by poor image quality. 2. This machine vision-based real-time electroplating defect detection device, through the cooperation of a circulation device and a return kinetic energy device, after completing the detection of the previous electroplated part, the locking plates set on the upper and lower locking wheels will be pushed into the upper track by the action of springs. At this time, the rack and driven gear will disengage. Then, the return kinetic energy device will return the upper and lower locking wheels to their initial positions. After the sensor detects that an electroplated part has entered the detection device, the electric push rod will push the return block again to lock the upper and lower locking wheels under the trapezoidal layered track. The rack will then move downward and mesh with the driven gear, and the device will run again to achieve repeated detection. This setting allows a single detection point to perform repeated detection continuously and efficiently, which greatly increases the detection volume per unit time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the interaction of the internal structures of the following adjustment mechanism of the present invention; Figure 3 This is a schematic diagram showing the contact relationship between the contact wheel and the conveyor belt surface of the present invention; Figure 4 This is a schematic diagram showing the cooperation between the same-speed adjustment device and the circulation device of the following adjustment mechanism of the present invention; Figure 5This is a schematic diagram of the internal structure of the circulation device of the present invention; Figure 6 This is a schematic diagram of the outer surface structure of the repositioning kinetic energy device of the present invention; Figure 7 This is a schematic diagram of the internal structure of the repositioning kinetic energy device of the present invention; Figure 8 This is a schematic diagram of the rack, upper and lower engagement wheels, and displacement stage of the present invention; Figure 9 This is a schematic diagram showing the interaction between the same-speed adjustment device, the circulation device, and the return kinetic energy device of the following adjustment mechanism of the present invention. Figure 10 This is a detailed structural diagram of the upper and lower locking wheels of the present invention.

[0017] In the diagram: 1. Conveyor belt; 2. Following adjustment mechanism; 201. Electric telescopic column support column; 202. H-shaped bracket; 203. Baffle plate; 204. Driving gear; 205. Contact wheel; 206. Driven gear; 207. Rack; 208. Upper and lower locking wheels; 209. Locking frame; 210. Trapezoidal layered track; 211. Electric push rod; 212. Return block; 213. Fixing block; 214. Connecting shaft; 215. Spring; 216. Telescopic cylinder; 217. Spring housing; 218. Displacement stage; 3. Protective housing; 4. Camera device; 5. Fill light device; 6. Sensor probe; 7. Receiver. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-10 A real-time detection device for electroplating defects based on machine vision includes a conveyor belt 1, a following adjustment mechanism 2 is provided on one side of the conveyor belt 1, a protective shell 3 is provided on the outside of the following adjustment mechanism 2, a camera device 4 is provided inside the following adjustment mechanism 2, a supplementary light device 5 is also provided inside the following adjustment mechanism 2, a sensing probe 6 is provided on one side of the following adjustment mechanism 2, and a receiver 7 is also provided on one side of the following adjustment mechanism 2. The following adjustment mechanism 2 includes a speed-synchronizing device for synchronizing the camera device 4 and the fill light 5 with the speed of the conveyor belt 1. The speed-synchronizing device includes an electrically telescopic support column 201, which is mounted on one side of the conveyor belt 1. An H-shaped bracket 202 is connected above the electrically telescopic support column 201. A baffle plate 203 is fixedly connected to one side surface of the H-shaped bracket 202. A drive gear 204 is rotatably connected inside the H-shaped bracket 202. A contact wheel 205 is fixedly connected to one side surface of the drive gear 204. A driven gear 206 meshes with the outer surface of the drive gear 204. A rack 207 meshes with the upper part of the driven gear 206. During operation, the electrically telescopic support column 201 adjusts the height of the H-shaped bracket 202 to match the conveyor belt. The contact wheel 205 adheres to the conveyor belt 1, moves with it, and drives the drive gear 204 to rotate. The drive gear drives the driven gear 206, which in turn drives the rack 207 to move synchronously, causing the camera device 4 and the fill light 5 to move at the same speed as the conveyor belt. The baffle 203 can limit the displacement range of the components and achieve precise speed synchronization through gear transmission, ensuring no relative movement during shooting and avoiding image blurring; at the same time, the electric telescopic design can adapt to different conveyor belt heights, improving the versatility of the device.

[0020] The following adjustment mechanism 2 also includes a circulation device for resetting and detecting the next electroplated part. The circulation device includes upper and lower engagement wheels 208, with an engagement frame 209 slidably connected to the outer side of the upper and lower engagement wheels 208. A trapezoidal layered track 210 is fixedly connected inside the engagement frame 209. An electric push rod 211 is fixedly connected to the upper surface of the engagement frame 209, and a return block 212 is fixedly connected to one side of the electric push rod 211. After the sensing probe 6 detects the electroplated part, the electric push rod 211 pushes the return block 212, engaging the upper and lower engagement wheels 208 into the lower layer of the trapezoidal layered track 210, causing the rack 207 to mesh with the driven gear 206 to achieve the same speed. After the detection is completed, the upper and lower engagement wheels 208 are engaged into the upper track under the action of the spring 215, disengaging. When a new electroplated part arrives, the electric push rod 211 pushes the return block to reset again, and the upper and lower locking wheels 208 return to the lower track to start a new round of inspection. Through the cooperation of the trapezoidal layered track 210 and the locking wheels 208, the rapid switching between inspection and reset can be achieved, ensuring continuous operation of a single inspection point.

[0021] The following adjustment mechanism 2 also includes a return kinetic energy device to provide the power required for the device's cycle. The return kinetic energy device includes a fixed block 213, which is fixedly connected to a connecting shaft core 214. A spring 215 is wound around the outside of the connecting shaft core 214. A telescopic cylinder 216 is fixedly connected to one side surface of the spring 215, and a spring housing 217 is connected to the outside of the spring 215. A displacement stage 218 is fixedly connected to the outside of the fixed block 213. During the detection process, the displacement stage 218 moves with the rack 207, causing the telescopic cylinder 216 to slide along the connecting shaft core 214, compressing and storing energy in the spring 215. After the detection is completed, the upper and lower locking wheels 208 enter the upper layer of the trapezoidal layered track 210, and the spring 215 releases its elastic potential energy, pushing the telescopic cylinder 216 to reset, causing the displacement stage 218 and the camera device 4 to return to their initial positions. The mechanical reset structure responds quickly, ensuring rapid cycle operation of the device and improving the continuity of detection.

[0022] Two sets of contact wheels 205 are arranged on each side above the conveyor belt 1. The outer surface of the contact wheels 205 is provided with uneven anti-slip wheels. When the conveyor belt 1 is running, the two sets of contact wheels 205 on the upper sides are in close contact with the conveyor belt 1 due to the uneven anti-slip wheels on their surfaces, and rotate synchronously with the conveyor belt 1. The rotation of the contact wheels 205 drives the drive gear 204 to rotate, which in turn causes the rack 207 to move at the same speed as the conveyor belt 1 through gear transmission, so as to realize the tracking shot of the camera device 4. The two sets of contact wheels 205 on both sides enhance the contact stability with the conveyor belt 1, the anti-slip wheels prevent slippage, ensure precise synchronization of transmission speed, and provide sufficient power for the camera device 4.

[0023] The outer dimensions of the driving gear 204 match the outer dimensions of the driven gear 206. Both driven gears 206 mesh with the two sets of driving gears 204. During operation, the two sets of driving gears 204 rotate with the contact wheel 205. Because the outer dimensions of the driving gears 204 and driven gears 206 match and mesh, the rotation of the driving gears 204 is synchronously transmitted to the driven gears 206, which then drive the rack 207 to move. The simultaneous meshing of the two sets of driving gears 204 with the driven gears 206 ensures more balanced power transmission. The matching dimensions guarantee a precise transmission ratio, ensuring that the speed of the rack 207 is completely synchronized with the conveyor belt 1. The meshing of the driven gears 206 with the two sets of driving gears 204 enhances transmission stability, avoids jamming or deviation caused by a single drive, improves speed matching accuracy, and ensures clear image capture by the camera device 4.

[0024] The upper and lower engaging wheels 208 are equipped with springs and engaging plates. Two sets of trapezoidal layered tracks 210 are arranged parallel to each other and in a straight line within the engaging frame 209. During the testing phase, the engaging plates of the upper and lower engaging wheels 208 are engaged into the lower layer of the trapezoidal layered track 210 under the push of the electric push rod 211, and the springs are compressed. After the testing is completed, the springs return to their original position and push the engaging plates, causing the upper and lower engaging wheels 208 to engage into the upper track, thus separating the rack 207 from the driven gear 206. The two sets of parallel trapezoidal layered tracks 210 ensure that the upper and lower engaging wheels 208 move in a straight line. The springs and engaging plates work together to automatically switch the engaging state. The two sets of tracks ensure smooth movement of the upper and lower engaging wheels 208 and prevent deviation.

[0025] Two sets of electric push rods 211 are installed above the engaging frame 209. The slot above the return block 212 matches the size of the slot above the trapezoidal layered track 210. During operation, after the sensor 6 detects the electroplated part, the two sets of electric push rods 211 extend and retract synchronously, pushing the return block 212 to move. Because the slot of the return block 212 matches the size of the slot of the trapezoidal layered track 210, the upper and lower engaging wheels 208 can be accurately pushed into the lower track, so that the rack 207 meshes with the driven gear 206. After the detection is completed, the electric push rods 211 reset, and the return block 212 disengages from the track slot. The synchronous operation of the two sets of electric push rods 211 improves the stability of the driving force and avoids engagement deviation; the matching slot size ensures accurate positioning and ensures reliable cooperation between the engaging wheels and the track.

[0026] One fixing block 213 is provided at each end of the connecting shaft core 214. One end of the spring housing 217 is slidably connected to the telescopic cylinder 216, and the other end is fixedly connected to the connecting shaft core 214 and the fixing block 213. During operation, the displacement table 218 drives the telescopic cylinder 216 to slide along the connecting shaft core 214. The fixing blocks 213 at both ends firmly support the connecting shaft core 214 to prevent it from shifting. One end of the spring housing 217 slides with the telescopic cylinder 216, and the other end is fixed to the connecting shaft core 214 and the fixing block 213, wrapping the spring 215 to prevent it from deviating from the track when deformed. The fixing blocks 213 at both ends enhance the stability of the connecting shaft core 214 and ensure that the telescopic cylinder 216 slides smoothly. The spring housing 217 protects the spring 215, reduces external interference, and extends its service life.

[0027] The telescopic cylinder 216 is slidably connected to the connecting shaft core 214. The telescopic cylinder 216 slides on the connecting shaft core 214 via a spring 215. During operation, the telescopic cylinder 216 moves with the displacement stage 218, and its interior slides along the connecting shaft core 214 while compressing the spring 215 to store energy. After the detection is completed, the spring 215 releases its potential energy, pushing the telescopic cylinder 216 to slide back and reset along the connecting shaft core 214, thus driving the camera device 4 back to its initial position. The sliding cooperation between the telescopic cylinder 216 and the connecting shaft core 214 ensures accurate repositioning and avoids deviation. The spring 215 provides a stable driving force.

[0028] Working principle: During operation, the electroplated part enters the detection device from the conveyor belt 1. After the sensing probe 6 detects the electroplated part, the electric push rod 211 is activated to push the upper and lower engagement wheels 208 to the first layer of the trapezoidal layered track 210 via the return block 212. Since the upper and lower engagement wheels 208 are fixedly connected to the rack 207, after the upper and lower engagement wheels 208 move down, the rack 207 will mesh with the driven gear 206. Since the contact wheel 205 is in contact with the conveyor belt 1, the displacement speed of the conveyor belt 1 is converted into the linear speed of the contact wheel 205. Subsequently, the contact wheel 205 drives the rack 207 to move at the same speed through the driving gear 204 and the driven gear 206. The rack 207 then drives the displacement platform 218 fixedly connected to it and the camera device 4 and the supplementary light device above it to move at the same speed, realizing the synchronous movement of the electroplated part and the camera device, without the need for the electroplating part to move. When the parts stop moving in the inspection area, the electroplated parts are photographed and inspected, allowing the inspection speed to match the production speed of the assembly line and improving the overall production efficiency. In addition, the camera device moves synchronously with the electroplated parts during shooting, reducing the blurring and ghosting problems caused by relative motion, and reducing false detections and missed detections caused by poor image quality. When the rack 207 moves to the end, the spring and locking block on the upper and lower locking wheels 208 will lock the roller above it onto the trapezoidal layered track 210. Then the spring 215 pushes the telescopic cylinder 216 to retract the upper and lower locking wheels 208 from the upper track to the initial position. When the sensing probe 6 senses the arrival of the electroplated parts again, the electric push rod 211 is activated again to start a new round of inspection. This setting allows a single inspection point to perform repeated inspections continuously and efficiently, greatly increasing the inspection volume per unit time.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A machine vision-based real-time detection device for electroplating defects, comprising a conveyor belt (1), characterized in that: The conveyor belt (1) is provided with a following adjusting mechanism (2) on one side, the outer side of the following adjusting mechanism (2) is provided with a protective shell (3), the inside of the following adjusting mechanism (2) is provided with a camera (4), the inside of the following adjusting mechanism (2) is also provided with a light compensator (5), one side of the following adjusting mechanism (2) is provided with an inductive probe (6), and one side of the following adjusting mechanism (2) is also provided with a receiver (7). The following adjusting mechanism (2) comprises A speed adjusting device for synchronizing the camera (4) and the light compensator (5) with the speed of the conveyor belt (1); A circulating device for realizing reset detection of the next electroplated part; A homing kinetic device for providing power required by device circulation. 2.The machine vision-based real-time electroplating defect detection device according to claim 1, characterized in that: The speed adjusting device comprises an electric telescopic support column (201), the electric telescopic support column (201) is installed on one side of the conveyor belt (1), an H-shaped support (202) is connected above the electric telescopic support column (201), a baffle (203) is fixedly connected to one side surface of the H-shaped support (202), a driving gear (204) is rotatably connected in the H-shaped support (202), a contact wheel (205) is fixedly connected to one side surface of the driving gear (204), a driven gear (206) is engaged with the outer side surface of the driving gear (204), and a rack (207) is engaged above the driven gear (206). 3.The machine vision-based real-time electroplating defect detection device of claim 1, wherein: The circulating device comprises an up-down clamping wheel (208), a clamping frame (209) is slidably connected to the outer side of the up-down clamping wheel (208), a trapezoidal layered track (210) is fixedly connected in the clamping frame (209), an electric push rod (211) is fixedly connected to the upper surface of the clamping frame (209), and a homing block (212) is fixedly connected to one side of the electric push rod (211). 4.The machine vision-based real-time electroplating defect detection device of claim 1, wherein: The homing kinetic device comprises a fixed block (213), the fixed block (213) is fixedly connected with a connecting shaft core (214), a spring (215) is wound on the outer side of the connecting shaft core (214), a telescopic cylinder (216) is fixedly connected to one side surface of the spring (215), a spring shell (217) is connected to the outer side of the spring (215), and a displacement table (218) is fixedly connected to the outer side of the fixed block (213).

5. The machine vision-based real-time electroplating defect detection device according to claim 2, wherein: Two groups of the contact wheels (205) are arranged on both sides above the conveyor belt (1), and the outer side surface of the contact wheel (205) is provided with a concave-convex anti-skid wheel. 6.The machine vision-based real-time electroplating defect detection device of claim 2, wherein: The outer size of the driving gear (204) is consistent with the outer size of the driven gear (206), and the driven gears (206) are engaged with the two groups of driving gears (204).

7. The machine vision-based real-time electroplating defect detection device according to claim 3, wherein: The up-down clamping wheel (208) is provided with a spring and a clamping plate, and the trapezoidal layered tracks (210) are arranged in parallel and on a straight line in the clamping frame (209). 8.The machine vision-based real-time electroplating defect detection device of claim 3, wherein: The electric push rod (211) is provided with two groups above the clamping frame (209), and the slot hole above the homing block (212) is matched with the size of the slot hole above the trapezoidal layered track (210). 9.The machine vision-based real-time electroplating defect detection device of claim 4, wherein: The fixed block (213) is provided with one on each end of the connecting shaft core (214), one end of the spring shell (217) is slidably connected with the telescopic cylinder (216), and the other end is fixedly connected with the connecting shaft core (214) and the fixed block (213).

10. The machine vision-based real-time electroplating defect detection device of claim 4, wherein: The telescopic cylinder (216) is slidably connected with the connecting shaft core (214) inside, and the telescopic cylinder (216) slides on the connecting shaft core (214) through the spring (215).

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