Detection device based on machine vision
By designing clamping parts with clamping plates and clamping plates, using the imprint layer on the conveyor belt to record defects, and combining the slide bar and contact ring to trigger the machine vision camera, the problem of the inability to fully detect parts in the prior art is solved, and fast and accurate part defect detection is achieved.
Patent Information
- Application Number
- CN202422293788.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing machine vision detection device cannot detect every face of the part, and the parts are not screened before detection, resulting in insufficiency of detection.
A machine vision-based detection device is designed to clamp parts using clamps and clamp the parts, and to record defects on the surface of the part through the imprint layer on the conveyor belt, and to trigger the machine vision camera for rapid detection in combination with the slide bar and the contact ring.
It realizes rapid detection of part surface defects, narrows the detection range, improves detection efficiency, and directly knows the defects of the part through imprint detection.
Smart Images
Figure CN223139429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of machine vision detection, in particular to a detection device based on machine vision. Background Technique
[0002] Visual inspection is to use a machine to replace the human eye for measurement and judgment. Visual inspection refers to converting the target to be captured into an image signal through a machine vision product (i.e., an image acquisition device, which is divided into two types: CMOS and CCD), and transmitting it to a dedicated image processing system. According to the pixel distribution, brightness, color and other information, it is converted into a digital signal; the image system performs various operations on these signals to extract the features of the target, and then controls the on-site equipment actions according to the discrimination results. It is a valuable mechanism for production, assembly or packaging. It has inestimable value in the function of detecting defects and preventing defective products from being delivered to consumers.
[0003] Although the current method of detecting parts by means of machine vision brings convenience, there is still a problem that not every surface can be detected, and each part is detected during the detection process. The parts are not screened before detection. During the machine vision detection process, a fixture is required to position each detected part to ensure that the light source irradiates the part, so that the camera can capture the irradiated part, and the position sensor can be triggered at the same position. How to enable rapid detection during the part transmission process is an important problem to be solved. Therefore, the inventor team invented a detection device based on machine vision to solve the detection problem of machine vision. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies of the prior art and provide a detection device based on machine vision.
[0005] The utility model is realized through the following technical solutions:
[0006] A detection device based on machine vision, comprising a clamping frame, an inclined frame, a clamping bracket and symmetrically arranged connecting brackets. The inclined frame is of a V-shaped structure and is fixedly equipped with a hydraulic cylinder at the left end. A piston rod is installed on the right side of the hydraulic cylinder, and a pushing ring is fixedly installed at the right end of the piston rod. A cover ring is fixedly installed on the right end face of the pushing ring. The clamping bracket is fixedly installed at the back position of the hydraulic cylinder. A second spiral spring is installed between the clamping brackets. The left and right ends of the connecting bracket are respectively connected with a second connecting ring and a first connecting ring. A first motor is sleeved inside the first connecting ring, and a first rotating cylinder is fixedly sleeved on the motor shaft of the first motor. A second motor is fixedly sleeved inside the second connecting ring, and a second rotating cylinder is fixedly sleeved on the motor shaft of the second motor. A conveyor belt is sleeved between the first rotating cylinder and the second rotating cylinder. A clamping frame is sleeved between the openings on the right side of the clamping brackets. A groove for the clamping bracket to slide is opened on the clamping frame. A clamping plate is fixedly installed at the upper end of the clamping bracket, and a clamping board is fixedly installed at the lower end of the clamping bracket. First spiral springs are connected between both the clamping board and the clamping plate and the clamping frame. A connecting block is fixedly installed between the clamping frame and the connecting bracket. A connecting plate is fixedly installed in the middle of the left side surface of the clamping frame. Turntables are evenly installed on the connecting plate. A rotating shaft is installed between the turntable and the connecting plate. Sleeve rings are evenly installed on the outer side surface of the turntable. A sliding rod is sleeved inside the sleeve ring. A first contact ring is sleeved on the inner wall of the sleeve ring. A second contact ring is sleeved on the surface of the sliding rod. A stop block is fixedly installed at the end of the sliding rod extending into the turntable. A third spiral spring is connected between the stop block and the inner wall of the turntable.
[0007] As a preferred technical solution of the present utility model, a cover box is sleeved outside the clamping bracket. A grip is fixedly installed on the left side surface of the cover box. An observation window is arranged at the position of the cover box corresponding to the connecting plate. A grip rod is fixedly installed on the lower side surface of the cover box.
[0008] As a preferred technical solution of the present utility model, the first motor and the second motor are synchronous motors.
[0009] As a preferred technical solution of the present utility model, an imprint layer is installed on the outer surface of the conveyor belt. The imprint layer is provided with an interlayer filled with plasticine. A ring sleeving the conveyor belt is installed on the connecting bracket.
[0010] As a preferred technical solution of the present utility model, the second connecting ring is fixedly connected to the inclined frame.
[0011] As a preferred technical solution of the present utility model, the pushing ring is of an annular structure. The pushing ring is sleeved outside the clamping bracket, and the cover ring is sleeved outside the clamping bracket. The clamping bracket is of a V-shaped structure and is made of sheet steel.
[0012] As a preferred technical solution of the present utility model, the clamping plate is of a flat plate structure, and the clamping board is of a U-shaped structure.
[0013] As a preferred technical solution of the present utility model, both the first contact ring and the second contact ring are made of copper material. The sliding rod is slidably matched with the collar. The turntable is of a hollow structure. The first contact ring is electrically connected to the machine vision camera and the warning device, and the second contact ring is electrically connected to the power supply.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] Through the cooperation of the clamping plate and the clamping block, the present utility model can clamp the parts between the two conveyor belts, use the imprint layer on the conveyor belt to imprint the surface defect condition of the parts, and can initially know the defect condition on the surface of the parts. Combining with the sliding of the sliding rod, the situation of the imprint can be directly detected. When a defect occurs in the parts, an alarm can be triggered, and the machine vision camera is used for shooting to quickly shoot the parts with defects. At the same time, the imprint can also be shot to more intuitively know the defects of the parts. And the whole device is equivalent to a fixture, which can clamp the parts conveyed on the conveyor belt to realize the detection of the defects of the parts. Through the conveyance of the conveyor belt, the parts can be driven to roll so as to imprint different surfaces of the parts. By detecting the imprint, the camera of the machine vision can be directly triggered. In this way, the detection range can be reduced, which provides help for the detection. The present utility model is a small fixture that can clamp the parts during conveyance, imprint the defects on the surface of the parts, and directly know the defect condition of the parts by detecting the imprint, reducing the detection range of the machine vision. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of the present utility model.
[0017] Figure 2 It is a schematic internal structure diagram of the turntable of the present utility model.
[0018] Figure 3 It is a schematic external contour structural diagram of the present utility model.
[0019] In the figure: 1. First motor, 2. First connecting ring, 3. First rotating cylinder, 4. Card frame, 5. Connecting frame, 6. Connecting block, 7. Clamping plate, 8. First spiral spring, 9. Clamping frame, 10. Conveyor belt, 11. Second rotating cylinder, 12. Second connecting ring, 13. Second rotating cylinder, 14. Second motor, 15. Inclined frame, 16. Piston rod, 17. Hydraulic cylinder, 18. Pushing ring, 19. Cover ring, 20. Second spiral spring, 21. Turntable, 22. Sliding rod, 23. Rotating shaft, 24. Connecting plate, 25. Clamping block, 26. Collar, 27. First contact ring, 28. Second contact ring, 29. Third spiral spring, 30. Stopper, 31. Holding frame, 32. Cover box, 33. Observation window, 34. Holding rod. Detailed Embodiments
[0020] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution:
[0022] A detection device based on machine vision includes a card frame 4, an inclined frame 15, a clamping frame 9, and symmetrically arranged connecting frames 5. The inclined frame 15 is of a V-shaped structure and a hydraulic cylinder 17 is fixedly installed at the left end. A piston rod 16 is installed on the right side of the hydraulic cylinder 17, and a push ring 18 is fixedly installed at the right end of the piston rod 16. A cover ring 19 is fixedly installed on the right end face of the push ring 18. The clamping frame 9 is fixedly installed at the back position of the hydraulic cylinder 17. A second spiral spring 20 is installed between the clamping frames 9. The left and right ends of the connecting frame 5 are respectively connected with a second connecting ring 12 and a first connecting ring 2. A first motor 1 is sleeved inside the first connecting ring 2. A first rotating cylinder 3 is fixedly sleeved on the motor shaft of the first motor 1. A second motor 14 is fixedly sleeved inside the second connecting ring 12. A second rotating cylinder 13 is fixedly sleeved on the motor shaft of the second motor 14. A conveyor belt 10 is sleeved between the first rotating cylinder 3 and the second rotating cylinder 13. A card frame 4 is sleeved between the openings on the right side of the clamping frames 9. A slot for the clamping frame 9 to slide is opened on the card frame 4. A clamping plate 7 is fixedly installed at the upper end of the clamping frame 9, and a clamping plate 25 is fixedly installed at the lower end of the clamping frame 9. A first spiral spring 8 is connected between both the clamping plate 25 and the clamping plate 7 and the card frame 4. A connecting block 6 is fixedly installed between the card frame 4 and the connecting frame 5. A connecting plate 24 is fixedly installed in the middle of the left side surface of the card frame 4. A turntable 21 is evenly installed on the connecting plate 24. A rotating shaft 23 is installed between the turntable 21 and the connecting plate 24. A collar 26 is evenly installed on the outer side surface of the turntable 21. A sliding rod 22 is sleeved inside the collar 26. A first contact ring 27 is sleeved on the inner wall of the collar 26. A second contact ring 28 is sleeved on the surface of the sliding rod 22. A stop block 30 is fixedly installed at the end of the sliding rod 22 extending into the turntable 21. A third spiral spring 29 is connected between the stop block 30 and the inner wall of the turntable 21.
[0023] A cover box 32 is sleeved outside the clamping frame 9. A grip 31 is fixedly installed on the left side surface of the cover box 32. An observation window 33 is provided at the position of the cover box 32 corresponding to the connecting plate 24. A grip rod 34 is fixedly installed on the lower side surface of the cover box 32.
[0024] The first motor 1 and the second motor 14 are synchronous motors.
[0025] An imprint layer is installed on the outer surface of the conveyor belt 10. The imprint layer is provided with an interlayer, and the interlayer is filled with plasticine. A ring sleeving the outer conveyor belt 10 is installed on the connecting frame 5.
[0026] The second connecting ring 12 is fixedly connected to the inclined frame 15.
[0027] The pushing ring 18 is of an annular structure. The pushing ring 18 sleevs outside the clamping frame 9, and the covering ring 19 sleevs outside the clamping frame 9. The clamping frame 9 is of a V-shaped structure and is made of sheet steel.
[0028] The clamping plate 7 is of a flat structure, and the clamping plate 25 is of a U-shaped structure.
[0029] Both the first contact ring 27 and the second contact ring 28 are made of copper materials. The sliding rod 22 is in sliding fit with the collar 26. The turntable 21 is of a hollow structure. The first contact ring 27 is electrically connected to the machine vision camera and the warning device, and the second contact ring 28 is electrically connected to the power supply.
[0030] Working principle: Parts are processed on the assembly line. In the final stage, the parts need to be inspected. The device is relatively small and easy to hold. Then, the clamping frame 4 is placed outside the parts. At this time, when the operator controls the hydraulic cylinder 17, the covering ring 19 will slide outside the clamping frame 9, thereby squeezing the clamping frame 9. Using the cooperation of the clamping plate 7 and the clamping plate 25, the parts are clamped. At this time, the defects on the parts will be imprinted on the imprint layer of the conveyor belt 10. Usually, the sliding rod 22 is in contact with the conveyor belt 10. By driving the first motor 1 and the second motor 14, the conveyor belt 10 rotates, so that the imprints on the conveyor belt 10 will move to the position of the sliding rod. If there are defects, the sliding rod 22 will slide, and then the first contact ring 27 and the second contact ring 28 will come into contact. The positions of the contact rings are adjusted in advance. When it is detected that the parts are defective, the machine vision camera and the alarm will be powered on. The camera is used for taking pictures for inspection, and the alarm gives a sound warning. In this way, defective parts can be detected in time. If the surface of the parts is normal, the sliding rod 22 will not be triggered to slide when passing through the sliding rod 22, so that the machine vision camera and the alarm will not be powered on. In this way, the detection range can be reduced, and the detection of the parts is realized by detecting the imprints on the surface of the parts.
[0031] It should be noted that the machine vision-based detection device is relatively small in size, slightly larger than the workpiece, which is convenient for the operator to hold. Moreover, it is entirely designed with lightweight, equivalent to a clip. During the process of part transfer, the shape of the part surface can be imprinted by clamping the part, and then the detection needle formed by the rear sliding rod is used for detection, cooperating with machine vision to complete the detection of part defects.
[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A detection device based on machine vision, comprising a card frame (4), an inclined frame (15), a clamping frame (9) and symmetrically arranged connecting frames (5), characterized in that: The clamping frame (9) is fixedly installed at the back position of the hydraulic cylinder (17). A second spiral spring (20) is installed between the clamping frames (9). The left and right ends of the connecting frame (5) are respectively connected with a second connecting ring (12) and a first connecting ring (2). A first motor (1) is sleeved inside the first connecting ring (2). A first rotating cylinder (3) is fixedly sleeved on the motor shaft of the first motor (1). A second motor (14) is fixedly sleeved inside the second connecting ring (12). A second rotating cylinder (13) is fixedly sleeved on the motor shaft of the second motor (14). A conveyor belt (10) is sleeved between the first rotating cylinder (3) and the second rotating cylinder (13). A clamping frame (4) is sleeved between the openings on the right side of the clamping frame (9). A slot for the clamping frame (9) to slide is opened on the clamping frame (4). A clamping plate (7) is fixedly installed at the upper end of the clamping frame (9). A clamping plate (25) is fixedly installed at the lower end of the clamping frame (9). A first spiral spring (8) is connected between both the clamping plate (25) and the clamping plate (7) and the clamping frame (4). A connecting block (6) is fixedly installed between the clamping frame (4) and the connecting frame (5). A connecting plate (24) is fixedly installed in the middle of the left side surface of the clamping frame (4). A turntable (21) is evenly installed on the connecting plate (24). A rotating shaft (23) is installed between the turntable (21) and the connecting plate (24). A collar (26) is evenly installed on the outer side surface of the turntable (21). A sliding rod (22) is sleeved inside the collar (26). A first contact ring (27) is sleeved on the inner wall of the collar (26). A second contact ring (28) is sleeved on the surface of the sliding rod (22). A stop block (30) is fixedly installed at one end of the sliding rod (22) extending into the turntable (21). A third spiral spring (29) is connected between the stop block (30) and the inner wall of the turntable (21).
2. The detection device based on machine vision according to claim 1, characterized in that: The inclined frame (15) is of a V-shaped structure and a hydraulic cylinder (17) is fixedly installed at the left end. A piston rod (16) is installed on the right side of the hydraulic cylinder (17). A push ring (18) is fixedly installed at the right end of the piston rod (16). A cover ring (19) is fixedly installed on the right end surface of the push ring (18).
3. The detection device based on machine vision according to claim 1, wherein: A cover box (32) is sleeved outside the clamping frame (9). A grip frame (31) is fixedly installed on the left side surface of the cover box (32). An observation window (33) is arranged at the position of the cover box (32) corresponding to the connecting plate (24). A grip rod (34) is fixedly installed on the lower side surface of the cover box (32).
4. A detection device based on machine vision according to claim 1, characterized in that: The first motor (1) and the second motor (14) are synchronous motors.
5. The detection device based on machine vision according to claim 1, wherein: An imprint layer is installed on the outer surface of the conveyor belt (10). The imprint layer is provided with an interlayer, and the interlayer is filled with plasticine. A ring sleeving the conveyor belt (10) is installed on the connecting frame (5).
6. The detection device based on machine vision according to claim 1, characterized in that: The second connecting ring (12) is fixedly connected with the inclined frame (15).
7. The detection device based on machine vision according to claim 2, wherein: The push ring (18) is of an annular structure. The push ring (18) is sleeved outside the clamping frame (9). The cover ring (19) is sleeved outside the clamping frame (9). The clamping frame (9) is of a V-shaped structure and is made of sheet steel.
8. The detection device based on machine vision according to claim 1, characterized in that: The clamping plate (7) is of a flat plate structure, and the clamping plate (25) is of a U-shaped structure.
9. The detection device based on machine vision according to claim 1, wherein: Both the first contact ring (27) and the second contact ring (28) are made of copper material. The slide rod (22) is in sliding fit with the collar (26). The turntable (21) is of a hollow structure. The first contact ring (27) is electrically connected to the machine vision camera and the warning device, and the second contact ring (28) is electrically connected to the power supply.